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| author | Sem <sembrestels@riseup.net> | 2013-11-09 16:27:03 +0100 |
|---|---|---|
| committer | Sem <sembrestels@riseup.net> | 2013-11-09 16:27:03 +0100 |
| commit | 911d0021c374602c31e5bfd71b1cd8074f2c2293 (patch) | |
| tree | 7e1d529b705e24906d69b9056d7980f0ebabc772 /mod/openid_api/vendors/php-openid/Auth/OpenID | |
| parent | 5cc7f96262509b2a5d43fa6fbb6cd083064385be (diff) | |
| parent | 33c206552a0cfd1166b2d5e4fcceb26f5ff1d224 (diff) | |
| download | elgg-911d0021c374602c31e5bfd71b1cd8074f2c2293.tar.gz elgg-911d0021c374602c31e5bfd71b1cd8074f2c2293.tar.bz2 | |
Add 'mod/openid_api/' from commit '33c206552a0cfd1166b2d5e4fcceb26f5ff1d224'
git-subtree-dir: mod/openid_api
git-subtree-mainline: 5cc7f96262509b2a5d43fa6fbb6cd083064385be
git-subtree-split: 33c206552a0cfd1166b2d5e4fcceb26f5ff1d224
Diffstat (limited to 'mod/openid_api/vendors/php-openid/Auth/OpenID')
29 files changed, 12651 insertions, 0 deletions
diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/AX.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/AX.php new file mode 100644 index 000000000..7370715e3 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/AX.php @@ -0,0 +1,1022 @@ +<?php + +/** + * Implements the OpenID attribute exchange specification, version 1.0 + * as of svn revision 370 from openid.net svn. + * + * @package OpenID + */ + +/** + * Require utility classes and functions for the consumer. + */ +require_once "Auth/OpenID/Extension.php"; +require_once "Auth/OpenID/Message.php"; +require_once "Auth/OpenID/TrustRoot.php"; + +define('Auth_OpenID_AX_NS_URI', + 'http://openid.net/srv/ax/1.0'); + +// Use this as the 'count' value for an attribute in a FetchRequest to +// ask for as many values as the OP can provide. +define('Auth_OpenID_AX_UNLIMITED_VALUES', 'unlimited'); + +// Minimum supported alias length in characters. Here for +// completeness. +define('Auth_OpenID_AX_MINIMUM_SUPPORTED_ALIAS_LENGTH', 32); + +/** + * AX utility class. + * + * @package OpenID + */ +class Auth_OpenID_AX { + /** + * @param mixed $thing Any object which may be an + * Auth_OpenID_AX_Error object. + * + * @return bool true if $thing is an Auth_OpenID_AX_Error; false + * if not. + */ + static function isError($thing) + { + return is_a($thing, 'Auth_OpenID_AX_Error'); + } +} + +/** + * Check an alias for invalid characters; raise AXError if any are + * found. Return None if the alias is valid. + */ +function Auth_OpenID_AX_checkAlias($alias) +{ + if (strpos($alias, ',') !== false) { + return new Auth_OpenID_AX_Error(sprintf( + "Alias %s must not contain comma", $alias)); + } + if (strpos($alias, '.') !== false) { + return new Auth_OpenID_AX_Error(sprintf( + "Alias %s must not contain period", $alias)); + } + + return true; +} + +/** + * Results from data that does not meet the attribute exchange 1.0 + * specification + * + * @package OpenID + */ +class Auth_OpenID_AX_Error { + function Auth_OpenID_AX_Error($message=null) + { + $this->message = $message; + } +} + +/** + * Abstract class containing common code for attribute exchange + * messages. + * + * @package OpenID + */ +class Auth_OpenID_AX_Message extends Auth_OpenID_Extension { + /** + * ns_alias: The preferred namespace alias for attribute exchange + * messages + */ + var $ns_alias = 'ax'; + + /** + * mode: The type of this attribute exchange message. This must be + * overridden in subclasses. + */ + var $mode = null; + + var $ns_uri = Auth_OpenID_AX_NS_URI; + + /** + * Return Auth_OpenID_AX_Error if the mode in the attribute + * exchange arguments does not match what is expected for this + * class; true otherwise. + * + * @access private + */ + function _checkMode($ax_args) + { + $mode = Auth_OpenID::arrayGet($ax_args, 'mode'); + if ($mode != $this->mode) { + return new Auth_OpenID_AX_Error( + sprintf( + "Expected mode '%s'; got '%s'", + $this->mode, $mode)); + } + + return true; + } + + /** + * Return a set of attribute exchange arguments containing the + * basic information that must be in every attribute exchange + * message. + * + * @access private + */ + function _newArgs() + { + return array('mode' => $this->mode); + } +} + +/** + * Represents a single attribute in an attribute exchange + * request. This should be added to an AXRequest object in order to + * request the attribute. + * + * @package OpenID + */ +class Auth_OpenID_AX_AttrInfo { + /** + * Construct an attribute information object. Do not call this + * directly; call make(...) instead. + * + * @param string $type_uri The type URI for this attribute. + * + * @param int $count The number of values of this type to request. + * + * @param bool $required Whether the attribute will be marked as + * required in the request. + * + * @param string $alias The name that should be given to this + * attribute in the request. + */ + function Auth_OpenID_AX_AttrInfo($type_uri, $count, $required, + $alias) + { + /** + * required: Whether the attribute will be marked as required + * when presented to the subject of the attribute exchange + * request. + */ + $this->required = $required; + + /** + * count: How many values of this type to request from the + * subject. Defaults to one. + */ + $this->count = $count; + + /** + * type_uri: The identifier that determines what the attribute + * represents and how it is serialized. For example, one type + * URI representing dates could represent a Unix timestamp in + * base 10 and another could represent a human-readable + * string. + */ + $this->type_uri = $type_uri; + + /** + * alias: The name that should be given to this attribute in + * the request. If it is not supplied, a generic name will be + * assigned. For example, if you want to call a Unix timestamp + * value 'tstamp', set its alias to that value. If two + * attributes in the same message request to use the same + * alias, the request will fail to be generated. + */ + $this->alias = $alias; + } + + /** + * Construct an attribute information object. For parameter + * details, see the constructor. + */ + static function make($type_uri, $count=1, $required=false, + $alias=null) + { + if ($alias !== null) { + $result = Auth_OpenID_AX_checkAlias($alias); + + if (Auth_OpenID_AX::isError($result)) { + return $result; + } + } + + return new Auth_OpenID_AX_AttrInfo($type_uri, $count, $required, + $alias); + } + + /** + * When processing a request for this attribute, the OP should + * call this method to determine whether all available attribute + * values were requested. If self.count == UNLIMITED_VALUES, this + * returns True. Otherwise this returns False, in which case + * self.count is an integer. + */ + function wantsUnlimitedValues() + { + return $this->count === Auth_OpenID_AX_UNLIMITED_VALUES; + } +} + +/** + * Given a namespace mapping and a string containing a comma-separated + * list of namespace aliases, return a list of type URIs that + * correspond to those aliases. + * + * @param $namespace_map The mapping from namespace URI to alias + * @param $alias_list_s The string containing the comma-separated + * list of aliases. May also be None for convenience. + * + * @return $seq The list of namespace URIs that corresponds to the + * supplied list of aliases. If the string was zero-length or None, an + * empty list will be returned. + * + * return null If an alias is present in the list of aliases but + * is not present in the namespace map. + */ +function Auth_OpenID_AX_toTypeURIs($namespace_map, $alias_list_s) +{ + $uris = array(); + + if ($alias_list_s) { + foreach (explode(',', $alias_list_s) as $alias) { + $type_uri = $namespace_map->getNamespaceURI($alias); + if ($type_uri === null) { + // raise KeyError( + // 'No type is defined for attribute name %r' % (alias,)) + return new Auth_OpenID_AX_Error( + sprintf('No type is defined for attribute name %s', + $alias) + ); + } else { + $uris[] = $type_uri; + } + } + } + + return $uris; +} + +/** + * An attribute exchange 'fetch_request' message. This message is sent + * by a relying party when it wishes to obtain attributes about the + * subject of an OpenID authentication request. + * + * @package OpenID + */ +class Auth_OpenID_AX_FetchRequest extends Auth_OpenID_AX_Message { + + var $mode = 'fetch_request'; + + function Auth_OpenID_AX_FetchRequest($update_url=null) + { + /** + * requested_attributes: The attributes that have been + * requested thus far, indexed by the type URI. + */ + $this->requested_attributes = array(); + + /** + * update_url: A URL that will accept responses for this + * attribute exchange request, even in the absence of the user + * who made this request. + */ + $this->update_url = $update_url; + } + + /** + * Add an attribute to this attribute exchange request. + * + * @param attribute: The attribute that is being requested + * @return true on success, false when the requested attribute is + * already present in this fetch request. + */ + function add($attribute) + { + if ($this->contains($attribute->type_uri)) { + return new Auth_OpenID_AX_Error( + sprintf("The attribute %s has already been requested", + $attribute->type_uri)); + } + + $this->requested_attributes[$attribute->type_uri] = $attribute; + + return true; + } + + /** + * Get the serialized form of this attribute fetch request. + * + * @returns Auth_OpenID_AX_FetchRequest The fetch request message parameters + */ + function getExtensionArgs() + { + $aliases = new Auth_OpenID_NamespaceMap(); + + $required = array(); + $if_available = array(); + + $ax_args = $this->_newArgs(); + + foreach ($this->requested_attributes as $type_uri => $attribute) { + if ($attribute->alias === null) { + $alias = $aliases->add($type_uri); + } else { + $alias = $aliases->addAlias($type_uri, $attribute->alias); + + if ($alias === null) { + return new Auth_OpenID_AX_Error( + sprintf("Could not add alias %s for URI %s", + $attribute->alias, $type_uri + )); + } + } + + if ($attribute->required) { + $required[] = $alias; + } else { + $if_available[] = $alias; + } + + if ($attribute->count != 1) { + $ax_args['count.' . $alias] = strval($attribute->count); + } + + $ax_args['type.' . $alias] = $type_uri; + } + + if ($required) { + $ax_args['required'] = implode(',', $required); + } + + if ($if_available) { + $ax_args['if_available'] = implode(',', $if_available); + } + + return $ax_args; + } + + /** + * Get the type URIs for all attributes that have been marked as + * required. + * + * @return A list of the type URIs for attributes that have been + * marked as required. + */ + function getRequiredAttrs() + { + $required = array(); + foreach ($this->requested_attributes as $type_uri => $attribute) { + if ($attribute->required) { + $required[] = $type_uri; + } + } + + return $required; + } + + /** + * Extract a FetchRequest from an OpenID message + * + * @param request: The OpenID request containing the attribute + * fetch request + * + * @returns mixed An Auth_OpenID_AX_Error or the + * Auth_OpenID_AX_FetchRequest extracted from the request message if + * successful + */ + static function fromOpenIDRequest($request) + { + $m = $request->message; + $obj = new Auth_OpenID_AX_FetchRequest(); + $ax_args = $m->getArgs($obj->ns_uri); + + $result = $obj->parseExtensionArgs($ax_args); + + if (Auth_OpenID_AX::isError($result)) { + return $result; + } + + if ($obj->update_url) { + // Update URL must match the openid.realm of the + // underlying OpenID 2 message. + $realm = $m->getArg(Auth_OpenID_OPENID_NS, 'realm', + $m->getArg( + Auth_OpenID_OPENID_NS, + 'return_to')); + + if (!$realm) { + $obj = new Auth_OpenID_AX_Error( + sprintf("Cannot validate update_url %s " . + "against absent realm", $obj->update_url)); + } else if (!Auth_OpenID_TrustRoot::match($realm, + $obj->update_url)) { + $obj = new Auth_OpenID_AX_Error( + sprintf("Update URL %s failed validation against realm %s", + $obj->update_url, $realm)); + } + } + + return $obj; + } + + /** + * Given attribute exchange arguments, populate this FetchRequest. + * + * @return $result Auth_OpenID_AX_Error if the data to be parsed + * does not follow the attribute exchange specification. At least + * when 'if_available' or 'required' is not specified for a + * particular attribute type. Returns true otherwise. + */ + function parseExtensionArgs($ax_args) + { + $result = $this->_checkMode($ax_args); + if (Auth_OpenID_AX::isError($result)) { + return $result; + } + + $aliases = new Auth_OpenID_NamespaceMap(); + + foreach ($ax_args as $key => $value) { + if (strpos($key, 'type.') === 0) { + $alias = substr($key, 5); + $type_uri = $value; + + $alias = $aliases->addAlias($type_uri, $alias); + + if ($alias === null) { + return new Auth_OpenID_AX_Error( + sprintf("Could not add alias %s for URI %s", + $alias, $type_uri) + ); + } + + $count_s = Auth_OpenID::arrayGet($ax_args, 'count.' . $alias); + if ($count_s) { + $count = Auth_OpenID::intval($count_s); + if (($count === false) && + ($count_s === Auth_OpenID_AX_UNLIMITED_VALUES)) { + $count = $count_s; + } + } else { + $count = 1; + } + + if ($count === false) { + return new Auth_OpenID_AX_Error( + sprintf("Integer value expected for %s, got %s", + 'count.' . $alias, $count_s)); + } + + $attrinfo = Auth_OpenID_AX_AttrInfo::make($type_uri, $count, + false, $alias); + + if (Auth_OpenID_AX::isError($attrinfo)) { + return $attrinfo; + } + + $this->add($attrinfo); + } + } + + $required = Auth_OpenID_AX_toTypeURIs($aliases, + Auth_OpenID::arrayGet($ax_args, 'required')); + + foreach ($required as $type_uri) { + $attrib = $this->requested_attributes[$type_uri]; + $attrib->required = true; + } + + $if_available = Auth_OpenID_AX_toTypeURIs($aliases, + Auth_OpenID::arrayGet($ax_args, 'if_available')); + + $all_type_uris = array_merge($required, $if_available); + + foreach ($aliases->iterNamespaceURIs() as $type_uri) { + if (!in_array($type_uri, $all_type_uris)) { + return new Auth_OpenID_AX_Error( + sprintf('Type URI %s was in the request but not ' . + 'present in "required" or "if_available"', + $type_uri)); + + } + } + + $this->update_url = Auth_OpenID::arrayGet($ax_args, 'update_url'); + + return true; + } + + /** + * Iterate over the AttrInfo objects that are contained in this + * fetch_request. + */ + function iterAttrs() + { + return array_values($this->requested_attributes); + } + + function iterTypes() + { + return array_keys($this->requested_attributes); + } + + /** + * Is the given type URI present in this fetch_request? + */ + function contains($type_uri) + { + return in_array($type_uri, $this->iterTypes()); + } +} + +/** + * An abstract class that implements a message that has attribute keys + * and values. It contains the common code between fetch_response and + * store_request. + * + * @package OpenID + */ +class Auth_OpenID_AX_KeyValueMessage extends Auth_OpenID_AX_Message { + + function Auth_OpenID_AX_KeyValueMessage() + { + $this->data = array(); + } + + /** + * Add a single value for the given attribute type to the + * message. If there are already values specified for this type, + * this value will be sent in addition to the values already + * specified. + * + * @param type_uri: The URI for the attribute + * @param value: The value to add to the response to the relying + * party for this attribute + * @return null + */ + function addValue($type_uri, $value) + { + if (!array_key_exists($type_uri, $this->data)) { + $this->data[$type_uri] = array(); + } + + $values =& $this->data[$type_uri]; + $values[] = $value; + } + + /** + * Set the values for the given attribute type. This replaces any + * values that have already been set for this attribute. + * + * @param type_uri: The URI for the attribute + * @param values: A list of values to send for this attribute. + */ + function setValues($type_uri, &$values) + { + $this->data[$type_uri] =& $values; + } + + /** + * Get the extension arguments for the key/value pairs contained + * in this message. + * + * @param aliases: An alias mapping. Set to None if you don't care + * about the aliases for this request. + * + * @access private + */ + function _getExtensionKVArgs($aliases) + { + if ($aliases === null) { + $aliases = new Auth_OpenID_NamespaceMap(); + } + + $ax_args = array(); + + foreach ($this->data as $type_uri => $values) { + $alias = $aliases->add($type_uri); + + $ax_args['type.' . $alias] = $type_uri; + $ax_args['count.' . $alias] = strval(count($values)); + + foreach ($values as $i => $value) { + $key = sprintf('value.%s.%d', $alias, $i + 1); + $ax_args[$key] = $value; + } + } + + return $ax_args; + } + + /** + * Parse attribute exchange key/value arguments into this object. + * + * @param ax_args: The attribute exchange fetch_response + * arguments, with namespacing removed. + * + * @return Auth_OpenID_AX_Error or true + */ + function parseExtensionArgs($ax_args) + { + $result = $this->_checkMode($ax_args); + if (Auth_OpenID_AX::isError($result)) { + return $result; + } + + $aliases = new Auth_OpenID_NamespaceMap(); + + foreach ($ax_args as $key => $value) { + if (strpos($key, 'type.') === 0) { + $type_uri = $value; + $alias = substr($key, 5); + + $result = Auth_OpenID_AX_checkAlias($alias); + + if (Auth_OpenID_AX::isError($result)) { + return $result; + } + + $alias = $aliases->addAlias($type_uri, $alias); + + if ($alias === null) { + return new Auth_OpenID_AX_Error( + sprintf("Could not add alias %s for URI %s", + $alias, $type_uri) + ); + } + } + } + + foreach ($aliases->iteritems() as $pair) { + list($type_uri, $alias) = $pair; + + if (array_key_exists('count.' . $alias, $ax_args) && ($ax_args['count.' . $alias] !== Auth_OpenID_AX_UNLIMITED_VALUES)) { + + $count_key = 'count.' . $alias; + $count_s = $ax_args[$count_key]; + + $count = Auth_OpenID::intval($count_s); + + if ($count === false) { + return new Auth_OpenID_AX_Error( + sprintf("Integer value expected for %s, got %s", + 'count. %s' . $alias, $count_s, + Auth_OpenID_AX_UNLIMITED_VALUES) + ); + } + + $values = array(); + for ($i = 1; $i < $count + 1; $i++) { + $value_key = sprintf('value.%s.%d', $alias, $i); + + if (!array_key_exists($value_key, $ax_args)) { + return new Auth_OpenID_AX_Error( + sprintf( + "No value found for key %s", + $value_key)); + } + + $value = $ax_args[$value_key]; + $values[] = $value; + } + } else { + $key = 'value.' . $alias; + + if (!array_key_exists($key, $ax_args)) { + return new Auth_OpenID_AX_Error( + sprintf( + "No value found for key %s", + $key)); + } + + $value = $ax_args['value.' . $alias]; + + if ($value == '') { + $values = array(); + } else { + $values = array($value); + } + } + + $this->data[$type_uri] = $values; + } + + return true; + } + + /** + * Get a single value for an attribute. If no value was sent for + * this attribute, use the supplied default. If there is more than + * one value for this attribute, this method will fail. + * + * @param type_uri: The URI for the attribute + * @param default: The value to return if the attribute was not + * sent in the fetch_response. + * + * @return $value Auth_OpenID_AX_Error on failure or the value of + * the attribute in the fetch_response message, or the default + * supplied + */ + function getSingle($type_uri, $default=null) + { + $values = Auth_OpenID::arrayGet($this->data, $type_uri); + if (!$values) { + return $default; + } else if (count($values) == 1) { + return $values[0]; + } else { + return new Auth_OpenID_AX_Error( + sprintf('More than one value present for %s', + $type_uri) + ); + } + } + + /** + * Get the list of values for this attribute in the + * fetch_response. + * + * XXX: what to do if the values are not present? default + * parameter? this is funny because it's always supposed to return + * a list, so the default may break that, though it's provided by + * the user's code, so it might be okay. If no default is + * supplied, should the return be None or []? + * + * @param type_uri: The URI of the attribute + * + * @return $values The list of values for this attribute in the + * response. May be an empty list. If the attribute was not sent + * in the response, returns Auth_OpenID_AX_Error. + */ + function get($type_uri) + { + if (array_key_exists($type_uri, $this->data)) { + return $this->data[$type_uri]; + } else { + return new Auth_OpenID_AX_Error( + sprintf("Type URI %s not found in response", + $type_uri) + ); + } + } + + /** + * Get the number of responses for a particular attribute in this + * fetch_response message. + * + * @param type_uri: The URI of the attribute + * + * @returns int The number of values sent for this attribute. If + * the attribute was not sent in the response, returns + * Auth_OpenID_AX_Error. + */ + function count($type_uri) + { + if (array_key_exists($type_uri, $this->data)) { + return count($this->get($type_uri)); + } else { + return new Auth_OpenID_AX_Error( + sprintf("Type URI %s not found in response", + $type_uri) + ); + } + } +} + +/** + * A fetch_response attribute exchange message. + * + * @package OpenID + */ +class Auth_OpenID_AX_FetchResponse extends Auth_OpenID_AX_KeyValueMessage { + var $mode = 'fetch_response'; + + function Auth_OpenID_AX_FetchResponse($update_url=null) + { + $this->Auth_OpenID_AX_KeyValueMessage(); + $this->update_url = $update_url; + } + + /** + * Serialize this object into arguments in the attribute exchange + * namespace + * + * @return $args The dictionary of unqualified attribute exchange + * arguments that represent this fetch_response, or + * Auth_OpenID_AX_Error on error. + */ + function getExtensionArgs($request=null) + { + $aliases = new Auth_OpenID_NamespaceMap(); + + $zero_value_types = array(); + + if ($request !== null) { + // Validate the data in the context of the request (the + // same attributes should be present in each, and the + // counts in the response must be no more than the counts + // in the request) + + foreach ($this->data as $type_uri => $unused) { + if (!$request->contains($type_uri)) { + return new Auth_OpenID_AX_Error( + sprintf("Response attribute not present in request: %s", + $type_uri) + ); + } + } + + foreach ($request->iterAttrs() as $attr_info) { + // Copy the aliases from the request so that reading + // the response in light of the request is easier + if ($attr_info->alias === null) { + $aliases->add($attr_info->type_uri); + } else { + $alias = $aliases->addAlias($attr_info->type_uri, + $attr_info->alias); + + if ($alias === null) { + return new Auth_OpenID_AX_Error( + sprintf("Could not add alias %s for URI %s", + $attr_info->alias, $attr_info->type_uri) + ); + } + } + + if (array_key_exists($attr_info->type_uri, $this->data)) { + $values = $this->data[$attr_info->type_uri]; + } else { + $values = array(); + $zero_value_types[] = $attr_info; + } + + if (($attr_info->count != Auth_OpenID_AX_UNLIMITED_VALUES) && + ($attr_info->count < count($values))) { + return new Auth_OpenID_AX_Error( + sprintf("More than the number of requested values " . + "were specified for %s", + $attr_info->type_uri) + ); + } + } + } + + $kv_args = $this->_getExtensionKVArgs($aliases); + + // Add the KV args into the response with the args that are + // unique to the fetch_response + $ax_args = $this->_newArgs(); + + // For each requested attribute, put its type/alias and count + // into the response even if no data were returned. + foreach ($zero_value_types as $attr_info) { + $alias = $aliases->getAlias($attr_info->type_uri); + $kv_args['type.' . $alias] = $attr_info->type_uri; + $kv_args['count.' . $alias] = '0'; + } + + $update_url = null; + if ($request) { + $update_url = $request->update_url; + } else { + $update_url = $this->update_url; + } + + if ($update_url) { + $ax_args['update_url'] = $update_url; + } + + Auth_OpenID::update($ax_args, $kv_args); + + return $ax_args; + } + + /** + * @return $result Auth_OpenID_AX_Error on failure or true on + * success. + */ + function parseExtensionArgs($ax_args) + { + $result = parent::parseExtensionArgs($ax_args); + + if (Auth_OpenID_AX::isError($result)) { + return $result; + } + + $this->update_url = Auth_OpenID::arrayGet($ax_args, 'update_url'); + + return true; + } + + /** + * Construct a FetchResponse object from an OpenID library + * SuccessResponse object. + * + * @param success_response: A successful id_res response object + * + * @param signed: Whether non-signed args should be processsed. If + * True (the default), only signed arguments will be processsed. + * + * @return $response A FetchResponse containing the data from the + * OpenID message + */ + static function fromSuccessResponse($success_response, $signed=true) + { + $obj = new Auth_OpenID_AX_FetchResponse(); + if ($signed) { + $ax_args = $success_response->getSignedNS($obj->ns_uri); + } else { + $ax_args = $success_response->message->getArgs($obj->ns_uri); + } + if ($ax_args === null || Auth_OpenID::isFailure($ax_args) || + sizeof($ax_args) == 0) { + return null; + } + + $result = $obj->parseExtensionArgs($ax_args); + if (Auth_OpenID_AX::isError($result)) { + #XXX log me + return null; + } + return $obj; + } +} + +/** + * A store request attribute exchange message representation. + * + * @package OpenID + */ +class Auth_OpenID_AX_StoreRequest extends Auth_OpenID_AX_KeyValueMessage { + var $mode = 'store_request'; + + /** + * @param array $aliases The namespace aliases to use when making + * this store response. Leave as None to use defaults. + */ + function getExtensionArgs($aliases=null) + { + $ax_args = $this->_newArgs(); + $kv_args = $this->_getExtensionKVArgs($aliases); + Auth_OpenID::update($ax_args, $kv_args); + return $ax_args; + } +} + +/** + * An indication that the store request was processed along with this + * OpenID transaction. Use make(), NOT the constructor, to create + * response objects. + * + * @package OpenID + */ +class Auth_OpenID_AX_StoreResponse extends Auth_OpenID_AX_Message { + var $SUCCESS_MODE = 'store_response_success'; + var $FAILURE_MODE = 'store_response_failure'; + + /** + * Returns Auth_OpenID_AX_Error on error or an + * Auth_OpenID_AX_StoreResponse object on success. + */ + function make($succeeded=true, $error_message=null) + { + if (($succeeded) && ($error_message !== null)) { + return new Auth_OpenID_AX_Error('An error message may only be '. + 'included in a failing fetch response'); + } + + return new Auth_OpenID_AX_StoreResponse($succeeded, $error_message); + } + + function Auth_OpenID_AX_StoreResponse($succeeded=true, $error_message=null) + { + if ($succeeded) { + $this->mode = $this->SUCCESS_MODE; + } else { + $this->mode = $this->FAILURE_MODE; + } + + $this->error_message = $error_message; + } + + /** + * Was this response a success response? + */ + function succeeded() + { + return $this->mode == $this->SUCCESS_MODE; + } + + function getExtensionArgs() + { + $ax_args = $this->_newArgs(); + if ((!$this->succeeded()) && $this->error_message) { + $ax_args['error'] = $this->error_message; + } + + return $ax_args; + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/Association.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/Association.php new file mode 100644 index 000000000..2729138eb --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/Association.php @@ -0,0 +1,610 @@ +<?php + +/** + * This module contains code for dealing with associations between + * consumers and servers. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +/** + * @access private + */ +require_once 'Auth/OpenID/CryptUtil.php'; + +/** + * @access private + */ +require_once 'Auth/OpenID/KVForm.php'; + +/** + * @access private + */ +require_once 'Auth/OpenID/HMAC.php'; + +/** + * This class represents an association between a server and a + * consumer. In general, users of this library will never see + * instances of this object. The only exception is if you implement a + * custom {@link Auth_OpenID_OpenIDStore}. + * + * If you do implement such a store, it will need to store the values + * of the handle, secret, issued, lifetime, and assoc_type instance + * variables. + * + * @package OpenID + */ +class Auth_OpenID_Association { + + /** + * This is a HMAC-SHA1 specific value. + * + * @access private + */ + var $SIG_LENGTH = 20; + + /** + * The ordering and name of keys as stored by serialize. + * + * @access private + */ + var $assoc_keys = array( + 'version', + 'handle', + 'secret', + 'issued', + 'lifetime', + 'assoc_type' + ); + + var $_macs = array( + 'HMAC-SHA1' => 'Auth_OpenID_HMACSHA1', + 'HMAC-SHA256' => 'Auth_OpenID_HMACSHA256' + ); + + /** + * This is an alternate constructor (factory method) used by the + * OpenID consumer library to create associations. OpenID store + * implementations shouldn't use this constructor. + * + * @access private + * + * @param integer $expires_in This is the amount of time this + * association is good for, measured in seconds since the + * association was issued. + * + * @param string $handle This is the handle the server gave this + * association. + * + * @param string secret This is the shared secret the server + * generated for this association. + * + * @param assoc_type This is the type of association this + * instance represents. The only valid values of this field at + * this time is 'HMAC-SHA1' and 'HMAC-SHA256', but new types may + * be defined in the future. + * + * @return association An {@link Auth_OpenID_Association} + * instance. + */ + static function fromExpiresIn($expires_in, $handle, $secret, $assoc_type) + { + $issued = time(); + $lifetime = $expires_in; + return new Auth_OpenID_Association($handle, $secret, + $issued, $lifetime, $assoc_type); + } + + /** + * This is the standard constructor for creating an association. + * The library should create all of the necessary associations, so + * this constructor is not part of the external API. + * + * @access private + * + * @param string $handle This is the handle the server gave this + * association. + * + * @param string $secret This is the shared secret the server + * generated for this association. + * + * @param integer $issued This is the time this association was + * issued, in seconds since 00:00 GMT, January 1, 1970. (ie, a + * unix timestamp) + * + * @param integer $lifetime This is the amount of time this + * association is good for, measured in seconds since the + * association was issued. + * + * @param string $assoc_type This is the type of association this + * instance represents. The only valid values of this field at + * this time is 'HMAC-SHA1' and 'HMAC-SHA256', but new types may + * be defined in the future. + */ + function Auth_OpenID_Association( + $handle, $secret, $issued, $lifetime, $assoc_type) + { + if (!in_array($assoc_type, + Auth_OpenID_getSupportedAssociationTypes(), true)) { + $fmt = 'Unsupported association type (%s)'; + trigger_error(sprintf($fmt, $assoc_type), E_USER_ERROR); + } + + $this->handle = $handle; + $this->secret = $secret; + $this->issued = $issued; + $this->lifetime = $lifetime; + $this->assoc_type = $assoc_type; + } + + /** + * This returns the number of seconds this association is still + * valid for, or 0 if the association is no longer valid. + * + * @return integer $seconds The number of seconds this association + * is still valid for, or 0 if the association is no longer valid. + */ + function getExpiresIn($now = null) + { + if ($now == null) { + $now = time(); + } + + return max(0, $this->issued + $this->lifetime - $now); + } + + /** + * This checks to see if two {@link Auth_OpenID_Association} + * instances represent the same association. + * + * @return bool $result true if the two instances represent the + * same association, false otherwise. + */ + function equal($other) + { + return ((gettype($this) == gettype($other)) + && ($this->handle == $other->handle) + && ($this->secret == $other->secret) + && ($this->issued == $other->issued) + && ($this->lifetime == $other->lifetime) + && ($this->assoc_type == $other->assoc_type)); + } + + /** + * Convert an association to KV form. + * + * @return string $result String in KV form suitable for + * deserialization by deserialize. + */ + function serialize() + { + $data = array( + 'version' => '2', + 'handle' => $this->handle, + 'secret' => base64_encode($this->secret), + 'issued' => strval(intval($this->issued)), + 'lifetime' => strval(intval($this->lifetime)), + 'assoc_type' => $this->assoc_type + ); + + assert(array_keys($data) == $this->assoc_keys); + + return Auth_OpenID_KVForm::fromArray($data, $strict = true); + } + + /** + * Parse an association as stored by serialize(). This is the + * inverse of serialize. + * + * @param string $assoc_s Association as serialized by serialize() + * @return Auth_OpenID_Association $result instance of this class + */ + static function deserialize($class_name, $assoc_s) + { + $pairs = Auth_OpenID_KVForm::toArray($assoc_s, $strict = true); + $keys = array(); + $values = array(); + foreach ($pairs as $key => $value) { + if (is_array($value)) { + list($key, $value) = $value; + } + $keys[] = $key; + $values[] = $value; + } + + $class_vars = get_class_vars($class_name); + $class_assoc_keys = $class_vars['assoc_keys']; + + sort($keys); + sort($class_assoc_keys); + + if ($keys != $class_assoc_keys) { + trigger_error('Unexpected key values: ' . var_export($keys, true), + E_USER_WARNING); + return null; + } + + $version = $pairs['version']; + $handle = $pairs['handle']; + $secret = $pairs['secret']; + $issued = $pairs['issued']; + $lifetime = $pairs['lifetime']; + $assoc_type = $pairs['assoc_type']; + + if ($version != '2') { + trigger_error('Unknown version: ' . $version, E_USER_WARNING); + return null; + } + + $issued = intval($issued); + $lifetime = intval($lifetime); + $secret = base64_decode($secret); + + return new $class_name( + $handle, $secret, $issued, $lifetime, $assoc_type); + } + + /** + * Generate a signature for a sequence of (key, value) pairs + * + * @access private + * @param array $pairs The pairs to sign, in order. This is an + * array of two-tuples. + * @return string $signature The binary signature of this sequence + * of pairs + */ + function sign($pairs) + { + $kv = Auth_OpenID_KVForm::fromArray($pairs); + + /* Invalid association types should be caught at constructor */ + $callback = $this->_macs[$this->assoc_type]; + + return call_user_func_array($callback, array($this->secret, $kv)); + } + + /** + * Generate a signature for some fields in a dictionary + * + * @access private + * @param array $fields The fields to sign, in order; this is an + * array of strings. + * @param array $data Dictionary of values to sign (an array of + * string => string pairs). + * @return string $signature The signature, base64 encoded + */ + function signMessage($message) + { + if ($message->hasKey(Auth_OpenID_OPENID_NS, 'sig') || + $message->hasKey(Auth_OpenID_OPENID_NS, 'signed')) { + // Already has a sig + return null; + } + + $extant_handle = $message->getArg(Auth_OpenID_OPENID_NS, + 'assoc_handle'); + + if ($extant_handle && ($extant_handle != $this->handle)) { + // raise ValueError("Message has a different association handle") + return null; + } + + $signed_message = $message; + $signed_message->setArg(Auth_OpenID_OPENID_NS, 'assoc_handle', + $this->handle); + + $message_keys = array_keys($signed_message->toPostArgs()); + $signed_list = array(); + $signed_prefix = 'openid.'; + + foreach ($message_keys as $k) { + if (strpos($k, $signed_prefix) === 0) { + $signed_list[] = substr($k, strlen($signed_prefix)); + } + } + + $signed_list[] = 'signed'; + sort($signed_list); + + $signed_message->setArg(Auth_OpenID_OPENID_NS, 'signed', + implode(',', $signed_list)); + $sig = $this->getMessageSignature($signed_message); + $signed_message->setArg(Auth_OpenID_OPENID_NS, 'sig', $sig); + return $signed_message; + } + + /** + * Given a {@link Auth_OpenID_Message}, return the key/value pairs + * to be signed according to the signed list in the message. If + * the message lacks a signed list, return null. + * + * @access private + */ + function _makePairs($message) + { + $signed = $message->getArg(Auth_OpenID_OPENID_NS, 'signed'); + if (!$signed || Auth_OpenID::isFailure($signed)) { + // raise ValueError('Message has no signed list: %s' % (message,)) + return null; + } + + $signed_list = explode(',', $signed); + $pairs = array(); + $data = $message->toPostArgs(); + foreach ($signed_list as $field) { + $pairs[] = array($field, Auth_OpenID::arrayGet($data, + 'openid.' . + $field, '')); + } + return $pairs; + } + + /** + * Given an {@link Auth_OpenID_Message}, return the signature for + * the signed list in the message. + * + * @access private + */ + function getMessageSignature($message) + { + $pairs = $this->_makePairs($message); + return base64_encode($this->sign($pairs)); + } + + /** + * Confirm that the signature of these fields matches the + * signature contained in the data. + * + * @access private + */ + function checkMessageSignature($message) + { + $sig = $message->getArg(Auth_OpenID_OPENID_NS, + 'sig'); + + if (!$sig || Auth_OpenID::isFailure($sig)) { + return false; + } + + $calculated_sig = $this->getMessageSignature($message); + return Auth_OpenID_CryptUtil::constEq($calculated_sig, $sig); + } +} + +function Auth_OpenID_getSecretSize($assoc_type) +{ + if ($assoc_type == 'HMAC-SHA1') { + return 20; + } else if ($assoc_type == 'HMAC-SHA256') { + return 32; + } else { + return null; + } +} + +function Auth_OpenID_getAllAssociationTypes() +{ + return array('HMAC-SHA1', 'HMAC-SHA256'); +} + +function Auth_OpenID_getSupportedAssociationTypes() +{ + $a = array('HMAC-SHA1'); + + if (Auth_OpenID_HMACSHA256_SUPPORTED) { + $a[] = 'HMAC-SHA256'; + } + + return $a; +} + +function Auth_OpenID_getSessionTypes($assoc_type) +{ + $assoc_to_session = array( + 'HMAC-SHA1' => array('DH-SHA1', 'no-encryption')); + + if (Auth_OpenID_HMACSHA256_SUPPORTED) { + $assoc_to_session['HMAC-SHA256'] = + array('DH-SHA256', 'no-encryption'); + } + + return Auth_OpenID::arrayGet($assoc_to_session, $assoc_type, array()); +} + +function Auth_OpenID_checkSessionType($assoc_type, $session_type) +{ + if (!in_array($session_type, + Auth_OpenID_getSessionTypes($assoc_type))) { + return false; + } + + return true; +} + +function Auth_OpenID_getDefaultAssociationOrder() +{ + $order = array(); + + if (!Auth_OpenID_noMathSupport()) { + $order[] = array('HMAC-SHA1', 'DH-SHA1'); + + if (Auth_OpenID_HMACSHA256_SUPPORTED) { + $order[] = array('HMAC-SHA256', 'DH-SHA256'); + } + } + + $order[] = array('HMAC-SHA1', 'no-encryption'); + + if (Auth_OpenID_HMACSHA256_SUPPORTED) { + $order[] = array('HMAC-SHA256', 'no-encryption'); + } + + return $order; +} + +function Auth_OpenID_getOnlyEncryptedOrder() +{ + $result = array(); + + foreach (Auth_OpenID_getDefaultAssociationOrder() as $pair) { + list($assoc, $session) = $pair; + + if ($session != 'no-encryption') { + if (Auth_OpenID_HMACSHA256_SUPPORTED && + ($assoc == 'HMAC-SHA256')) { + $result[] = $pair; + } else if ($assoc != 'HMAC-SHA256') { + $result[] = $pair; + } + } + } + + return $result; +} + +function Auth_OpenID_getDefaultNegotiator() +{ + return new Auth_OpenID_SessionNegotiator( + Auth_OpenID_getDefaultAssociationOrder()); +} + +function Auth_OpenID_getEncryptedNegotiator() +{ + return new Auth_OpenID_SessionNegotiator( + Auth_OpenID_getOnlyEncryptedOrder()); +} + +/** + * A session negotiator controls the allowed and preferred association + * types and association session types. Both the {@link + * Auth_OpenID_Consumer} and {@link Auth_OpenID_Server} use + * negotiators when creating associations. + * + * You can create and use negotiators if you: + + * - Do not want to do Diffie-Hellman key exchange because you use + * transport-layer encryption (e.g. SSL) + * + * - Want to use only SHA-256 associations + * + * - Do not want to support plain-text associations over a non-secure + * channel + * + * It is up to you to set a policy for what kinds of associations to + * accept. By default, the library will make any kind of association + * that is allowed in the OpenID 2.0 specification. + * + * Use of negotiators in the library + * ================================= + * + * When a consumer makes an association request, it calls {@link + * getAllowedType} to get the preferred association type and + * association session type. + * + * The server gets a request for a particular association/session type + * and calls {@link isAllowed} to determine if it should create an + * association. If it is supported, negotiation is complete. If it is + * not, the server calls {@link getAllowedType} to get an allowed + * association type to return to the consumer. + * + * If the consumer gets an error response indicating that the + * requested association/session type is not supported by the server + * that contains an assocation/session type to try, it calls {@link + * isAllowed} to determine if it should try again with the given + * combination of association/session type. + * + * @package OpenID + */ +class Auth_OpenID_SessionNegotiator { + function Auth_OpenID_SessionNegotiator($allowed_types) + { + $this->allowed_types = array(); + $this->setAllowedTypes($allowed_types); + } + + /** + * Set the allowed association types, checking to make sure each + * combination is valid. + * + * @access private + */ + function setAllowedTypes($allowed_types) + { + foreach ($allowed_types as $pair) { + list($assoc_type, $session_type) = $pair; + if (!Auth_OpenID_checkSessionType($assoc_type, $session_type)) { + return false; + } + } + + $this->allowed_types = $allowed_types; + return true; + } + + /** + * Add an association type and session type to the allowed types + * list. The assocation/session pairs are tried in the order that + * they are added. + * + * @access private + */ + function addAllowedType($assoc_type, $session_type = null) + { + if ($this->allowed_types === null) { + $this->allowed_types = array(); + } + + if ($session_type === null) { + $available = Auth_OpenID_getSessionTypes($assoc_type); + + if (!$available) { + return false; + } + + foreach ($available as $session_type) { + $this->addAllowedType($assoc_type, $session_type); + } + } else { + if (Auth_OpenID_checkSessionType($assoc_type, $session_type)) { + $this->allowed_types[] = array($assoc_type, $session_type); + } else { + return false; + } + } + + return true; + } + + // Is this combination of association type and session type allowed? + function isAllowed($assoc_type, $session_type) + { + $assoc_good = in_array(array($assoc_type, $session_type), + $this->allowed_types); + + $matches = in_array($session_type, + Auth_OpenID_getSessionTypes($assoc_type)); + + return ($assoc_good && $matches); + } + + /** + * Get a pair of assocation type and session type that are + * supported. + */ + function getAllowedType() + { + if (!$this->allowed_types) { + return array(null, null); + } + + return $this->allowed_types[0]; + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/BigMath.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/BigMath.php new file mode 100644 index 000000000..58b46bf27 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/BigMath.php @@ -0,0 +1,451 @@ +<?php + +/** + * BigMath: A math library wrapper that abstracts out the underlying + * long integer library. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @access private + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +/** + * Needed for random number generation + */ +require_once 'Auth/OpenID/CryptUtil.php'; + +/** + * Need Auth_OpenID::bytes(). + */ +require_once 'Auth/OpenID.php'; + +/** + * The superclass of all big-integer math implementations + * @access private + * @package OpenID + */ +class Auth_OpenID_MathLibrary { + /** + * Given a long integer, returns the number converted to a binary + * string. This function accepts long integer values of arbitrary + * magnitude and uses the local large-number math library when + * available. + * + * @param integer $long The long number (can be a normal PHP + * integer or a number created by one of the available long number + * libraries) + * @return string $binary The binary version of $long + */ + function longToBinary($long) + { + $cmp = $this->cmp($long, 0); + if ($cmp < 0) { + $msg = __FUNCTION__ . " takes only positive integers."; + trigger_error($msg, E_USER_ERROR); + return null; + } + + if ($cmp == 0) { + return "\x00"; + } + + $bytes = array(); + + while ($this->cmp($long, 0) > 0) { + array_unshift($bytes, $this->mod($long, 256)); + $long = $this->div($long, pow(2, 8)); + } + + if ($bytes && ($bytes[0] > 127)) { + array_unshift($bytes, 0); + } + + $string = ''; + foreach ($bytes as $byte) { + $string .= pack('C', $byte); + } + + return $string; + } + + /** + * Given a binary string, returns the binary string converted to a + * long number. + * + * @param string $binary The binary version of a long number, + * probably as a result of calling longToBinary + * @return integer $long The long number equivalent of the binary + * string $str + */ + function binaryToLong($str) + { + if ($str === null) { + return null; + } + + // Use array_merge to return a zero-indexed array instead of a + // one-indexed array. + $bytes = array_merge(unpack('C*', $str)); + + $n = $this->init(0); + + if ($bytes && ($bytes[0] > 127)) { + trigger_error("bytesToNum works only for positive integers.", + E_USER_WARNING); + return null; + } + + foreach ($bytes as $byte) { + $n = $this->mul($n, pow(2, 8)); + $n = $this->add($n, $byte); + } + + return $n; + } + + function base64ToLong($str) + { + $b64 = base64_decode($str); + + if ($b64 === false) { + return false; + } + + return $this->binaryToLong($b64); + } + + function longToBase64($str) + { + return base64_encode($this->longToBinary($str)); + } + + /** + * Returns a random number in the specified range. This function + * accepts $start, $stop, and $step values of arbitrary magnitude + * and will utilize the local large-number math library when + * available. + * + * @param integer $start The start of the range, or the minimum + * random number to return + * @param integer $stop The end of the range, or the maximum + * random number to return + * @param integer $step The step size, such that $result - ($step + * * N) = $start for some N + * @return integer $result The resulting randomly-generated number + */ + function rand($stop) + { + static $duplicate_cache = array(); + + // Used as the key for the duplicate cache + $rbytes = $this->longToBinary($stop); + + if (array_key_exists($rbytes, $duplicate_cache)) { + list($duplicate, $nbytes) = $duplicate_cache[$rbytes]; + } else { + if ($rbytes[0] == "\x00") { + $nbytes = Auth_OpenID::bytes($rbytes) - 1; + } else { + $nbytes = Auth_OpenID::bytes($rbytes); + } + + $mxrand = $this->pow(256, $nbytes); + + // If we get a number less than this, then it is in the + // duplicated range. + $duplicate = $this->mod($mxrand, $stop); + + if (count($duplicate_cache) > 10) { + $duplicate_cache = array(); + } + + $duplicate_cache[$rbytes] = array($duplicate, $nbytes); + } + + do { + $bytes = "\x00" . Auth_OpenID_CryptUtil::getBytes($nbytes); + $n = $this->binaryToLong($bytes); + // Keep looping if this value is in the low duplicated range + } while ($this->cmp($n, $duplicate) < 0); + + return $this->mod($n, $stop); + } +} + +/** + * Exposes BCmath math library functionality. + * + * {@link Auth_OpenID_BcMathWrapper} wraps the functionality provided + * by the BCMath extension. + * + * @access private + * @package OpenID + */ +class Auth_OpenID_BcMathWrapper extends Auth_OpenID_MathLibrary{ + var $type = 'bcmath'; + + function add($x, $y) + { + return bcadd($x, $y); + } + + function sub($x, $y) + { + return bcsub($x, $y); + } + + function pow($base, $exponent) + { + return bcpow($base, $exponent); + } + + function cmp($x, $y) + { + return bccomp($x, $y); + } + + function init($number, $base = 10) + { + return $number; + } + + function mod($base, $modulus) + { + return bcmod($base, $modulus); + } + + function mul($x, $y) + { + return bcmul($x, $y); + } + + function div($x, $y) + { + return bcdiv($x, $y); + } + + /** + * Same as bcpowmod when bcpowmod is missing + * + * @access private + */ + function _powmod($base, $exponent, $modulus) + { + $square = $this->mod($base, $modulus); + $result = 1; + while($this->cmp($exponent, 0) > 0) { + if ($this->mod($exponent, 2)) { + $result = $this->mod($this->mul($result, $square), $modulus); + } + $square = $this->mod($this->mul($square, $square), $modulus); + $exponent = $this->div($exponent, 2); + } + return $result; + } + + function powmod($base, $exponent, $modulus) + { + if (function_exists('bcpowmod')) { + return bcpowmod($base, $exponent, $modulus); + } else { + return $this->_powmod($base, $exponent, $modulus); + } + } + + function toString($num) + { + return $num; + } +} + +/** + * Exposes GMP math library functionality. + * + * {@link Auth_OpenID_GmpMathWrapper} wraps the functionality provided + * by the GMP extension. + * + * @access private + * @package OpenID + */ +class Auth_OpenID_GmpMathWrapper extends Auth_OpenID_MathLibrary{ + var $type = 'gmp'; + + function add($x, $y) + { + return gmp_add($x, $y); + } + + function sub($x, $y) + { + return gmp_sub($x, $y); + } + + function pow($base, $exponent) + { + return gmp_pow($base, $exponent); + } + + function cmp($x, $y) + { + return gmp_cmp($x, $y); + } + + function init($number, $base = 10) + { + return gmp_init($number, $base); + } + + function mod($base, $modulus) + { + return gmp_mod($base, $modulus); + } + + function mul($x, $y) + { + return gmp_mul($x, $y); + } + + function div($x, $y) + { + return gmp_div_q($x, $y); + } + + function powmod($base, $exponent, $modulus) + { + return gmp_powm($base, $exponent, $modulus); + } + + function toString($num) + { + return gmp_strval($num); + } +} + +/** + * Define the supported extensions. An extension array has keys + * 'modules', 'extension', and 'class'. 'modules' is an array of PHP + * module names which the loading code will attempt to load. These + * values will be suffixed with a library file extension (e.g. ".so"). + * 'extension' is the name of a PHP extension which will be tested + * before 'modules' are loaded. 'class' is the string name of a + * {@link Auth_OpenID_MathWrapper} subclass which should be + * instantiated if a given extension is present. + * + * You can define new math library implementations and add them to + * this array. + */ +function Auth_OpenID_math_extensions() +{ + $result = array(); + + if (!defined('Auth_OpenID_BUGGY_GMP')) { + $result[] = + array('modules' => array('gmp', 'php_gmp'), + 'extension' => 'gmp', + 'class' => 'Auth_OpenID_GmpMathWrapper'); + } + + $result[] = array('modules' => array('bcmath', 'php_bcmath'), + 'extension' => 'bcmath', + 'class' => 'Auth_OpenID_BcMathWrapper'); + + return $result; +} + +/** + * Detect which (if any) math library is available + */ +function Auth_OpenID_detectMathLibrary($exts) +{ + $loaded = false; + + foreach ($exts as $extension) { + if (extension_loaded($extension['extension'])) { + return $extension; + } + } + + return false; +} + +/** + * {@link Auth_OpenID_getMathLib} checks for the presence of long + * number extension modules and returns an instance of + * {@link Auth_OpenID_MathWrapper} which exposes the module's + * functionality. + * + * Checks for the existence of an extension module described by the + * result of {@link Auth_OpenID_math_extensions()} and returns an + * instance of a wrapper for that extension module. If no extension + * module is found, an instance of {@link Auth_OpenID_MathWrapper} is + * returned, which wraps the native PHP integer implementation. The + * proper calling convention for this method is $lib = + * Auth_OpenID_getMathLib(). + * + * This function checks for the existence of specific long number + * implementations in the following order: GMP followed by BCmath. + * + * @return Auth_OpenID_MathWrapper $instance An instance of + * {@link Auth_OpenID_MathWrapper} or one of its subclasses + * + * @package OpenID + */ +function Auth_OpenID_getMathLib() +{ + // The instance of Auth_OpenID_MathWrapper that we choose to + // supply will be stored here, so that subseqent calls to this + // method will return a reference to the same object. + static $lib = null; + + if (isset($lib)) { + return $lib; + } + + if (Auth_OpenID_noMathSupport()) { + $null = null; + return $null; + } + + // If this method has not been called before, look at + // Auth_OpenID_math_extensions and try to find an extension that + // works. + $ext = Auth_OpenID_detectMathLibrary(Auth_OpenID_math_extensions()); + if ($ext === false) { + $tried = array(); + foreach (Auth_OpenID_math_extensions() as $extinfo) { + $tried[] = $extinfo['extension']; + } + $triedstr = implode(", ", $tried); + + Auth_OpenID_setNoMathSupport(); + + $result = null; + return $result; + } + + // Instantiate a new wrapper + $class = $ext['class']; + $lib = new $class(); + + return $lib; +} + +function Auth_OpenID_setNoMathSupport() +{ + if (!defined('Auth_OpenID_NO_MATH_SUPPORT')) { + define('Auth_OpenID_NO_MATH_SUPPORT', true); + } +} + +function Auth_OpenID_noMathSupport() +{ + return defined('Auth_OpenID_NO_MATH_SUPPORT'); +} + + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/Consumer.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/Consumer.php new file mode 100644 index 000000000..e480b86f2 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/Consumer.php @@ -0,0 +1,2234 @@ +<?php + +/** + * This module documents the main interface with the OpenID consumer + * library. The only part of the library which has to be used and + * isn't documented in full here is the store required to create an + * Auth_OpenID_Consumer instance. More on the abstract store type and + * concrete implementations of it that are provided in the + * documentation for the Auth_OpenID_Consumer constructor. + * + * OVERVIEW + * + * The OpenID identity verification process most commonly uses the + * following steps, as visible to the user of this library: + * + * 1. The user enters their OpenID into a field on the consumer's + * site, and hits a login button. + * 2. The consumer site discovers the user's OpenID server using the + * YADIS protocol. + * 3. The consumer site sends the browser a redirect to the identity + * server. This is the authentication request as described in + * the OpenID specification. + * 4. The identity server's site sends the browser a redirect back + * to the consumer site. This redirect contains the server's + * response to the authentication request. + * + * The most important part of the flow to note is the consumer's site + * must handle two separate HTTP requests in order to perform the full + * identity check. + * + * LIBRARY DESIGN + * + * This consumer library is designed with that flow in mind. The goal + * is to make it as easy as possible to perform the above steps + * securely. + * + * At a high level, there are two important parts in the consumer + * library. The first important part is this module, which contains + * the interface to actually use this library. The second is the + * Auth_OpenID_Interface class, which describes the interface to use + * if you need to create a custom method for storing the state this + * library needs to maintain between requests. + * + * In general, the second part is less important for users of the + * library to know about, as several implementations are provided + * which cover a wide variety of situations in which consumers may use + * the library. + * + * This module contains a class, Auth_OpenID_Consumer, with methods + * corresponding to the actions necessary in each of steps 2, 3, and 4 + * described in the overview. Use of this library should be as easy + * as creating an Auth_OpenID_Consumer instance and calling the + * methods appropriate for the action the site wants to take. + * + * STORES AND DUMB MODE + * + * OpenID is a protocol that works best when the consumer site is able + * to store some state. This is the normal mode of operation for the + * protocol, and is sometimes referred to as smart mode. There is + * also a fallback mode, known as dumb mode, which is available when + * the consumer site is not able to store state. This mode should be + * avoided when possible, as it leaves the implementation more + * vulnerable to replay attacks. + * + * The mode the library works in for normal operation is determined by + * the store that it is given. The store is an abstraction that + * handles the data that the consumer needs to manage between http + * requests in order to operate efficiently and securely. + * + * Several store implementation are provided, and the interface is + * fully documented so that custom stores can be used as well. See + * the documentation for the Auth_OpenID_Consumer class for more + * information on the interface for stores. The implementations that + * are provided allow the consumer site to store the necessary data in + * several different ways, including several SQL databases and normal + * files on disk. + * + * There is an additional concrete store provided that puts the system + * in dumb mode. This is not recommended, as it removes the library's + * ability to stop replay attacks reliably. It still uses time-based + * checking to make replay attacks only possible within a small + * window, but they remain possible within that window. This store + * should only be used if the consumer site has no way to retain data + * between requests at all. + * + * IMMEDIATE MODE + * + * In the flow described above, the user may need to confirm to the + * lidentity server that it's ok to authorize his or her identity. + * The server may draw pages asking for information from the user + * before it redirects the browser back to the consumer's site. This + * is generally transparent to the consumer site, so it is typically + * ignored as an implementation detail. + * + * There can be times, however, where the consumer site wants to get a + * response immediately. When this is the case, the consumer can put + * the library in immediate mode. In immediate mode, there is an + * extra response possible from the server, which is essentially the + * server reporting that it doesn't have enough information to answer + * the question yet. + * + * USING THIS LIBRARY + * + * Integrating this library into an application is usually a + * relatively straightforward process. The process should basically + * follow this plan: + * + * Add an OpenID login field somewhere on your site. When an OpenID + * is entered in that field and the form is submitted, it should make + * a request to the your site which includes that OpenID URL. + * + * First, the application should instantiate the Auth_OpenID_Consumer + * class using the store of choice (Auth_OpenID_FileStore or one of + * the SQL-based stores). If the application has a custom + * session-management implementation, an object implementing the + * {@link Auth_Yadis_PHPSession} interface should be passed as the + * second parameter. Otherwise, the default uses $_SESSION. + * + * Next, the application should call the Auth_OpenID_Consumer object's + * 'begin' method. This method takes the OpenID URL. The 'begin' + * method returns an Auth_OpenID_AuthRequest object. + * + * Next, the application should call the 'redirectURL' method of the + * Auth_OpenID_AuthRequest object. The 'return_to' URL parameter is + * the URL that the OpenID server will send the user back to after + * attempting to verify his or her identity. The 'trust_root' is the + * URL (or URL pattern) that identifies your web site to the user when + * he or she is authorizing it. Send a redirect to the resulting URL + * to the user's browser. + * + * That's the first half of the authentication process. The second + * half of the process is done after the user's ID server sends the + * user's browser a redirect back to your site to complete their + * login. + * + * When that happens, the user will contact your site at the URL given + * as the 'return_to' URL to the Auth_OpenID_AuthRequest::redirectURL + * call made above. The request will have several query parameters + * added to the URL by the identity server as the information + * necessary to finish the request. + * + * Lastly, instantiate an Auth_OpenID_Consumer instance as above and + * call its 'complete' method, passing in all the received query + * arguments. + * + * There are multiple possible return types possible from that + * method. These indicate the whether or not the login was successful, + * and include any additional information appropriate for their type. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +/** + * Require utility classes and functions for the consumer. + */ +require_once "Auth/OpenID.php"; +require_once "Auth/OpenID/Message.php"; +require_once "Auth/OpenID/HMAC.php"; +require_once "Auth/OpenID/Association.php"; +require_once "Auth/OpenID/CryptUtil.php"; +require_once "Auth/OpenID/DiffieHellman.php"; +require_once "Auth/OpenID/KVForm.php"; +require_once "Auth/OpenID/Nonce.php"; +require_once "Auth/OpenID/Discover.php"; +require_once "Auth/OpenID/URINorm.php"; +require_once "Auth/Yadis/Manager.php"; +require_once "Auth/Yadis/XRI.php"; + +/** + * This is the status code returned when the complete method returns + * successfully. + */ +define('Auth_OpenID_SUCCESS', 'success'); + +/** + * Status to indicate cancellation of OpenID authentication. + */ +define('Auth_OpenID_CANCEL', 'cancel'); + +/** + * This is the status code completeAuth returns when the value it + * received indicated an invalid login. + */ +define('Auth_OpenID_FAILURE', 'failure'); + +/** + * This is the status code completeAuth returns when the + * {@link Auth_OpenID_Consumer} instance is in immediate mode, and the + * identity server sends back a URL to send the user to to complete his + * or her login. + */ +define('Auth_OpenID_SETUP_NEEDED', 'setup needed'); + +/** + * This is the status code beginAuth returns when the page fetched + * from the entered OpenID URL doesn't contain the necessary link tags + * to function as an identity page. + */ +define('Auth_OpenID_PARSE_ERROR', 'parse error'); + +/** + * An OpenID consumer implementation that performs discovery and does + * session management. See the Consumer.php file documentation for + * more information. + * + * @package OpenID + */ +class Auth_OpenID_Consumer { + + /** + * @access private + */ + var $discoverMethod = 'Auth_OpenID_discover'; + + /** + * @access private + */ + var $session_key_prefix = "_openid_consumer_"; + + /** + * @access private + */ + var $_token_suffix = "last_token"; + + /** + * Initialize a Consumer instance. + * + * You should create a new instance of the Consumer object with + * every HTTP request that handles OpenID transactions. + * + * @param Auth_OpenID_OpenIDStore $store This must be an object + * that implements the interface in {@link + * Auth_OpenID_OpenIDStore}. Several concrete implementations are + * provided, to cover most common use cases. For stores backed by + * MySQL, PostgreSQL, or SQLite, see the {@link + * Auth_OpenID_SQLStore} class and its sublcasses. For a + * filesystem-backed store, see the {@link Auth_OpenID_FileStore} + * module. As a last resort, if it isn't possible for the server + * to store state at all, an instance of {@link + * Auth_OpenID_DumbStore} can be used. + * + * @param mixed $session An object which implements the interface + * of the {@link Auth_Yadis_PHPSession} class. Particularly, this + * object is expected to have these methods: get($key), set($key), + * $value), and del($key). This defaults to a session object + * which wraps PHP's native session machinery. You should only + * need to pass something here if you have your own sessioning + * implementation. + * + * @param str $consumer_cls The name of the class to instantiate + * when creating the internal consumer object. This is used for + * testing. + */ + function Auth_OpenID_Consumer($store, $session = null, + $consumer_cls = null) + { + if ($session === null) { + $session = new Auth_Yadis_PHPSession(); + } + + $this->session = $session; + + if ($consumer_cls !== null) { + $this->consumer = new $consumer_cls($store); + } else { + $this->consumer = new Auth_OpenID_GenericConsumer($store); + } + + $this->_token_key = $this->session_key_prefix . $this->_token_suffix; + } + + /** + * Used in testing to define the discovery mechanism. + * + * @access private + */ + function getDiscoveryObject($session, $openid_url, + $session_key_prefix) + { + return new Auth_Yadis_Discovery($session, $openid_url, + $session_key_prefix); + } + + /** + * Start the OpenID authentication process. See steps 1-2 in the + * overview at the top of this file. + * + * @param string $user_url Identity URL given by the user. This + * method performs a textual transformation of the URL to try and + * make sure it is normalized. For example, a user_url of + * example.com will be normalized to http://example.com/ + * normalizing and resolving any redirects the server might issue. + * + * @param bool $anonymous True if the OpenID request is to be sent + * to the server without any identifier information. Use this + * when you want to transport data but don't want to do OpenID + * authentication with identifiers. + * + * @return Auth_OpenID_AuthRequest $auth_request An object + * containing the discovered information will be returned, with a + * method for building a redirect URL to the server, as described + * in step 3 of the overview. This object may also be used to add + * extension arguments to the request, using its 'addExtensionArg' + * method. + */ + function begin($user_url, $anonymous=false) + { + $openid_url = $user_url; + + $disco = $this->getDiscoveryObject($this->session, + $openid_url, + $this->session_key_prefix); + + // Set the 'stale' attribute of the manager. If discovery + // fails in a fatal way, the stale flag will cause the manager + // to be cleaned up next time discovery is attempted. + + $m = $disco->getManager(); + $loader = new Auth_Yadis_ManagerLoader(); + + if ($m) { + if ($m->stale) { + $disco->destroyManager(); + } else { + $m->stale = true; + $disco->session->set($disco->session_key, + serialize($loader->toSession($m))); + } + } + + $endpoint = $disco->getNextService($this->discoverMethod, + $this->consumer->fetcher); + + // Reset the 'stale' attribute of the manager. + $m = $disco->getManager(); + if ($m) { + $m->stale = false; + $disco->session->set($disco->session_key, + serialize($loader->toSession($m))); + } + + if ($endpoint === null) { + return null; + } else { + return $this->beginWithoutDiscovery($endpoint, + $anonymous); + } + } + + /** + * Start OpenID verification without doing OpenID server + * discovery. This method is used internally by Consumer.begin + * after discovery is performed, and exists to provide an + * interface for library users needing to perform their own + * discovery. + * + * @param Auth_OpenID_ServiceEndpoint $endpoint an OpenID service + * endpoint descriptor. + * + * @param bool anonymous Set to true if you want to perform OpenID + * without identifiers. + * + * @return Auth_OpenID_AuthRequest $auth_request An OpenID + * authentication request object. + */ + function beginWithoutDiscovery($endpoint, $anonymous=false) + { + $loader = new Auth_OpenID_ServiceEndpointLoader(); + $auth_req = $this->consumer->begin($endpoint); + $this->session->set($this->_token_key, + $loader->toSession($auth_req->endpoint)); + if (!$auth_req->setAnonymous($anonymous)) { + return new Auth_OpenID_FailureResponse(null, + "OpenID 1 requests MUST include the identifier " . + "in the request."); + } + return $auth_req; + } + + /** + * Called to interpret the server's response to an OpenID + * request. It is called in step 4 of the flow described in the + * consumer overview. + * + * @param string $current_url The URL used to invoke the application. + * Extract the URL from your application's web + * request framework and specify it here to have it checked + * against the openid.current_url value in the response. If + * the current_url URL check fails, the status of the + * completion will be FAILURE. + * + * @param array $query An array of the query parameters (key => + * value pairs) for this HTTP request. Defaults to null. If + * null, the GET or POST data are automatically gotten from the + * PHP environment. It is only useful to override $query for + * testing. + * + * @return Auth_OpenID_ConsumerResponse $response A instance of an + * Auth_OpenID_ConsumerResponse subclass. The type of response is + * indicated by the status attribute, which will be one of + * SUCCESS, CANCEL, FAILURE, or SETUP_NEEDED. + */ + function complete($current_url, $query=null) + { + if ($current_url && !is_string($current_url)) { + // This is ugly, but we need to complain loudly when + // someone uses the API incorrectly. + trigger_error("current_url must be a string; see NEWS file " . + "for upgrading notes.", + E_USER_ERROR); + } + + if ($query === null) { + $query = Auth_OpenID::getQuery(); + } + + $loader = new Auth_OpenID_ServiceEndpointLoader(); + $endpoint_data = $this->session->get($this->_token_key); + $endpoint = + $loader->fromSession($endpoint_data); + + $message = Auth_OpenID_Message::fromPostArgs($query); + $response = $this->consumer->complete($message, $endpoint, + $current_url); + $this->session->del($this->_token_key); + + if (in_array($response->status, array(Auth_OpenID_SUCCESS, + Auth_OpenID_CANCEL))) { + if ($response->identity_url !== null) { + $disco = $this->getDiscoveryObject($this->session, + $response->identity_url, + $this->session_key_prefix); + $disco->cleanup(true); + } + } + + return $response; + } +} + +/** + * A class implementing HMAC/DH-SHA1 consumer sessions. + * + * @package OpenID + */ +class Auth_OpenID_DiffieHellmanSHA1ConsumerSession { + var $session_type = 'DH-SHA1'; + var $hash_func = 'Auth_OpenID_SHA1'; + var $secret_size = 20; + var $allowed_assoc_types = array('HMAC-SHA1'); + + function Auth_OpenID_DiffieHellmanSHA1ConsumerSession($dh = null) + { + if ($dh === null) { + $dh = new Auth_OpenID_DiffieHellman(); + } + + $this->dh = $dh; + } + + function getRequest() + { + $math = Auth_OpenID_getMathLib(); + + $cpub = $math->longToBase64($this->dh->public); + + $args = array('dh_consumer_public' => $cpub); + + if (!$this->dh->usingDefaultValues()) { + $args = array_merge($args, array( + 'dh_modulus' => + $math->longToBase64($this->dh->mod), + 'dh_gen' => + $math->longToBase64($this->dh->gen))); + } + + return $args; + } + + function extractSecret($response) + { + if (!$response->hasKey(Auth_OpenID_OPENID_NS, + 'dh_server_public')) { + return null; + } + + if (!$response->hasKey(Auth_OpenID_OPENID_NS, + 'enc_mac_key')) { + return null; + } + + $math = Auth_OpenID_getMathLib(); + + $spub = $math->base64ToLong($response->getArg(Auth_OpenID_OPENID_NS, + 'dh_server_public')); + $enc_mac_key = base64_decode($response->getArg(Auth_OpenID_OPENID_NS, + 'enc_mac_key')); + + return $this->dh->xorSecret($spub, $enc_mac_key, $this->hash_func); + } +} + +/** + * A class implementing HMAC/DH-SHA256 consumer sessions. + * + * @package OpenID + */ +class Auth_OpenID_DiffieHellmanSHA256ConsumerSession extends + Auth_OpenID_DiffieHellmanSHA1ConsumerSession { + var $session_type = 'DH-SHA256'; + var $hash_func = 'Auth_OpenID_SHA256'; + var $secret_size = 32; + var $allowed_assoc_types = array('HMAC-SHA256'); +} + +/** + * A class implementing plaintext consumer sessions. + * + * @package OpenID + */ +class Auth_OpenID_PlainTextConsumerSession { + var $session_type = 'no-encryption'; + var $allowed_assoc_types = array('HMAC-SHA1', 'HMAC-SHA256'); + + function getRequest() + { + return array(); + } + + function extractSecret($response) + { + if (!$response->hasKey(Auth_OpenID_OPENID_NS, 'mac_key')) { + return null; + } + + return base64_decode($response->getArg(Auth_OpenID_OPENID_NS, + 'mac_key')); + } +} + +/** + * Returns available session types. + */ +function Auth_OpenID_getAvailableSessionTypes() +{ + $types = array( + 'no-encryption' => 'Auth_OpenID_PlainTextConsumerSession', + 'DH-SHA1' => 'Auth_OpenID_DiffieHellmanSHA1ConsumerSession', + 'DH-SHA256' => 'Auth_OpenID_DiffieHellmanSHA256ConsumerSession'); + + return $types; +} + +/** + * This class is the interface to the OpenID consumer logic. + * Instances of it maintain no per-request state, so they can be + * reused (or even used by multiple threads concurrently) as needed. + * + * @package OpenID + */ +class Auth_OpenID_GenericConsumer { + /** + * @access private + */ + var $discoverMethod = 'Auth_OpenID_discover'; + + /** + * This consumer's store object. + */ + var $store; + + /** + * @access private + */ + var $_use_assocs; + + /** + * @access private + */ + var $openid1_nonce_query_arg_name = 'janrain_nonce'; + + /** + * Another query parameter that gets added to the return_to for + * OpenID 1; if the user's session state is lost, use this claimed + * identifier to do discovery when verifying the response. + */ + var $openid1_return_to_identifier_name = 'openid1_claimed_id'; + + /** + * This method initializes a new {@link Auth_OpenID_Consumer} + * instance to access the library. + * + * @param Auth_OpenID_OpenIDStore $store This must be an object + * that implements the interface in {@link Auth_OpenID_OpenIDStore}. + * Several concrete implementations are provided, to cover most common use + * cases. For stores backed by MySQL, PostgreSQL, or SQLite, see + * the {@link Auth_OpenID_SQLStore} class and its sublcasses. For a + * filesystem-backed store, see the {@link Auth_OpenID_FileStore} module. + * As a last resort, if it isn't possible for the server to store + * state at all, an instance of {@link Auth_OpenID_DumbStore} can be used. + * + * @param bool $immediate This is an optional boolean value. It + * controls whether the library uses immediate mode, as explained + * in the module description. The default value is False, which + * disables immediate mode. + */ + function Auth_OpenID_GenericConsumer($store) + { + $this->store = $store; + $this->negotiator = Auth_OpenID_getDefaultNegotiator(); + $this->_use_assocs = (is_null($this->store) ? false : true); + + $this->fetcher = Auth_Yadis_Yadis::getHTTPFetcher(); + + $this->session_types = Auth_OpenID_getAvailableSessionTypes(); + } + + /** + * Called to begin OpenID authentication using the specified + * {@link Auth_OpenID_ServiceEndpoint}. + * + * @access private + */ + function begin($service_endpoint) + { + $assoc = $this->_getAssociation($service_endpoint); + $r = new Auth_OpenID_AuthRequest($service_endpoint, $assoc); + $r->return_to_args[$this->openid1_nonce_query_arg_name] = + Auth_OpenID_mkNonce(); + + if ($r->message->isOpenID1()) { + $r->return_to_args[$this->openid1_return_to_identifier_name] = + $r->endpoint->claimed_id; + } + + return $r; + } + + /** + * Given an {@link Auth_OpenID_Message}, {@link + * Auth_OpenID_ServiceEndpoint} and optional return_to URL, + * complete OpenID authentication. + * + * @access private + */ + function complete($message, $endpoint, $return_to) + { + $mode = $message->getArg(Auth_OpenID_OPENID_NS, 'mode', + '<no mode set>'); + + $mode_methods = array( + 'cancel' => '_complete_cancel', + 'error' => '_complete_error', + 'setup_needed' => '_complete_setup_needed', + 'id_res' => '_complete_id_res', + ); + + $method = Auth_OpenID::arrayGet($mode_methods, $mode, + '_completeInvalid'); + + return call_user_func_array(array($this, $method), + array($message, $endpoint, $return_to)); + } + + /** + * @access private + */ + function _completeInvalid($message, $endpoint, $unused) + { + $mode = $message->getArg(Auth_OpenID_OPENID_NS, 'mode', + '<No mode set>'); + + return new Auth_OpenID_FailureResponse($endpoint, + sprintf("Invalid openid.mode '%s'", $mode)); + } + + /** + * @access private + */ + function _complete_cancel($message, $endpoint, $unused) + { + return new Auth_OpenID_CancelResponse($endpoint); + } + + /** + * @access private + */ + function _complete_error($message, $endpoint, $unused) + { + $error = $message->getArg(Auth_OpenID_OPENID_NS, 'error'); + $contact = $message->getArg(Auth_OpenID_OPENID_NS, 'contact'); + $reference = $message->getArg(Auth_OpenID_OPENID_NS, 'reference'); + + return new Auth_OpenID_FailureResponse($endpoint, $error, + $contact, $reference); + } + + /** + * @access private + */ + function _complete_setup_needed($message, $endpoint, $unused) + { + if (!$message->isOpenID2()) { + return $this->_completeInvalid($message, $endpoint); + } + + $user_setup_url = $message->getArg(Auth_OpenID_OPENID2_NS, + 'user_setup_url'); + return new Auth_OpenID_SetupNeededResponse($endpoint, $user_setup_url); + } + + /** + * @access private + */ + function _complete_id_res($message, $endpoint, $return_to) + { + $user_setup_url = $message->getArg(Auth_OpenID_OPENID1_NS, + 'user_setup_url'); + + if ($this->_checkSetupNeeded($message)) { + return new Auth_OpenID_SetupNeededResponse( + $endpoint, $user_setup_url); + } else { + return $this->_doIdRes($message, $endpoint, $return_to); + } + } + + /** + * @access private + */ + function _checkSetupNeeded($message) + { + // In OpenID 1, we check to see if this is a cancel from + // immediate mode by the presence of the user_setup_url + // parameter. + if ($message->isOpenID1()) { + $user_setup_url = $message->getArg(Auth_OpenID_OPENID1_NS, + 'user_setup_url'); + if ($user_setup_url !== null) { + return true; + } + } + + return false; + } + + /** + * @access private + */ + function _doIdRes($message, $endpoint, $return_to) + { + // Checks for presence of appropriate fields (and checks + // signed list fields) + $result = $this->_idResCheckForFields($message); + + if (Auth_OpenID::isFailure($result)) { + return $result; + } + + if (!$this->_checkReturnTo($message, $return_to)) { + return new Auth_OpenID_FailureResponse(null, + sprintf("return_to does not match return URL. Expected %s, got %s", + $return_to, + $message->getArg(Auth_OpenID_OPENID_NS, 'return_to'))); + } + + // Verify discovery information: + $result = $this->_verifyDiscoveryResults($message, $endpoint); + + if (Auth_OpenID::isFailure($result)) { + return $result; + } + + $endpoint = $result; + + $result = $this->_idResCheckSignature($message, + $endpoint->server_url); + + if (Auth_OpenID::isFailure($result)) { + return $result; + } + + $result = $this->_idResCheckNonce($message, $endpoint); + + if (Auth_OpenID::isFailure($result)) { + return $result; + } + + $signed_list_str = $message->getArg(Auth_OpenID_OPENID_NS, 'signed', + Auth_OpenID_NO_DEFAULT); + if (Auth_OpenID::isFailure($signed_list_str)) { + return $signed_list_str; + } + $signed_list = explode(',', $signed_list_str); + + $signed_fields = Auth_OpenID::addPrefix($signed_list, "openid."); + + return new Auth_OpenID_SuccessResponse($endpoint, $message, + $signed_fields); + + } + + /** + * @access private + */ + function _checkReturnTo($message, $return_to) + { + // Check an OpenID message and its openid.return_to value + // against a return_to URL from an application. Return True + // on success, False on failure. + + // Check the openid.return_to args against args in the + // original message. + $result = Auth_OpenID_GenericConsumer::_verifyReturnToArgs( + $message->toPostArgs()); + if (Auth_OpenID::isFailure($result)) { + return false; + } + + // Check the return_to base URL against the one in the + // message. + $msg_return_to = $message->getArg(Auth_OpenID_OPENID_NS, + 'return_to'); + if (Auth_OpenID::isFailure($return_to)) { + // XXX log me + return false; + } + + $return_to_parts = parse_url(Auth_OpenID_urinorm($return_to)); + $msg_return_to_parts = parse_url(Auth_OpenID_urinorm($msg_return_to)); + + // If port is absent from both, add it so it's equal in the + // check below. + if ((!array_key_exists('port', $return_to_parts)) && + (!array_key_exists('port', $msg_return_to_parts))) { + $return_to_parts['port'] = null; + $msg_return_to_parts['port'] = null; + } + + // If path is absent from both, add it so it's equal in the + // check below. + if ((!array_key_exists('path', $return_to_parts)) && + (!array_key_exists('path', $msg_return_to_parts))) { + $return_to_parts['path'] = null; + $msg_return_to_parts['path'] = null; + } + + // The URL scheme, authority, and path MUST be the same + // between the two URLs. + foreach (array('scheme', 'host', 'port', 'path') as $component) { + // If the url component is absent in either URL, fail. + // There should always be a scheme, host, port, and path. + if (!array_key_exists($component, $return_to_parts)) { + return false; + } + + if (!array_key_exists($component, $msg_return_to_parts)) { + return false; + } + + if (Auth_OpenID::arrayGet($return_to_parts, $component) !== + Auth_OpenID::arrayGet($msg_return_to_parts, $component)) { + return false; + } + } + + return true; + } + + /** + * @access private + */ + function _verifyReturnToArgs($query) + { + // Verify that the arguments in the return_to URL are present in this + // response. + + $message = Auth_OpenID_Message::fromPostArgs($query); + $return_to = $message->getArg(Auth_OpenID_OPENID_NS, 'return_to'); + + if (Auth_OpenID::isFailure($return_to)) { + return $return_to; + } + // XXX: this should be checked by _idResCheckForFields + if (!$return_to) { + return new Auth_OpenID_FailureResponse(null, + "Response has no return_to"); + } + + $parsed_url = parse_url($return_to); + + $q = array(); + if (array_key_exists('query', $parsed_url)) { + $rt_query = $parsed_url['query']; + $q = Auth_OpenID::parse_str($rt_query); + } + + foreach ($q as $rt_key => $rt_value) { + if (!array_key_exists($rt_key, $query)) { + return new Auth_OpenID_FailureResponse(null, + sprintf("return_to parameter %s absent from query", $rt_key)); + } else { + $value = $query[$rt_key]; + if ($rt_value != $value) { + return new Auth_OpenID_FailureResponse(null, + sprintf("parameter %s value %s does not match " . + "return_to value %s", $rt_key, + $value, $rt_value)); + } + } + } + + // Make sure all non-OpenID arguments in the response are also + // in the signed return_to. + $bare_args = $message->getArgs(Auth_OpenID_BARE_NS); + foreach ($bare_args as $key => $value) { + if (Auth_OpenID::arrayGet($q, $key) != $value) { + return new Auth_OpenID_FailureResponse(null, + sprintf("Parameter %s = %s not in return_to URL", + $key, $value)); + } + } + + return true; + } + + /** + * @access private + */ + function _idResCheckSignature($message, $server_url) + { + $assoc_handle = $message->getArg(Auth_OpenID_OPENID_NS, + 'assoc_handle'); + if (Auth_OpenID::isFailure($assoc_handle)) { + return $assoc_handle; + } + + $assoc = $this->store->getAssociation($server_url, $assoc_handle); + + if ($assoc) { + if ($assoc->getExpiresIn() <= 0) { + // XXX: It might be a good idea sometimes to re-start + // the authentication with a new association. Doing it + // automatically opens the possibility for + // denial-of-service by a server that just returns + // expired associations (or really short-lived + // associations) + return new Auth_OpenID_FailureResponse(null, + 'Association with ' . $server_url . ' expired'); + } + + if (!$assoc->checkMessageSignature($message)) { + // If we get a "bad signature" here, it means that the association + // is unrecoverabley corrupted in some way. Any futher attempts + // to login with this association is likely to fail. Drop it. + $this->store->removeAssociation($server_url, $assoc_handle); + return new Auth_OpenID_FailureResponse(null, + "Bad signature"); + } + } else { + // It's not an association we know about. Stateless mode + // is our only possible path for recovery. XXX - async + // framework will not want to block on this call to + // _checkAuth. + if (!$this->_checkAuth($message, $server_url)) { + return new Auth_OpenID_FailureResponse(null, + "Server denied check_authentication"); + } + } + + return null; + } + + /** + * @access private + */ + function _verifyDiscoveryResults($message, $endpoint=null) + { + if ($message->getOpenIDNamespace() == Auth_OpenID_OPENID2_NS) { + return $this->_verifyDiscoveryResultsOpenID2($message, + $endpoint); + } else { + return $this->_verifyDiscoveryResultsOpenID1($message, + $endpoint); + } + } + + /** + * @access private + */ + function _verifyDiscoveryResultsOpenID1($message, $endpoint) + { + $claimed_id = $message->getArg(Auth_OpenID_BARE_NS, + $this->openid1_return_to_identifier_name); + + if (($endpoint === null) && ($claimed_id === null)) { + return new Auth_OpenID_FailureResponse($endpoint, + 'When using OpenID 1, the claimed ID must be supplied, ' . + 'either by passing it through as a return_to parameter ' . + 'or by using a session, and supplied to the GenericConsumer ' . + 'as the argument to complete()'); + } else if (($endpoint !== null) && ($claimed_id === null)) { + $claimed_id = $endpoint->claimed_id; + } + + $to_match = new Auth_OpenID_ServiceEndpoint(); + $to_match->type_uris = array(Auth_OpenID_TYPE_1_1); + $to_match->local_id = $message->getArg(Auth_OpenID_OPENID1_NS, + 'identity'); + + // Restore delegate information from the initiation phase + $to_match->claimed_id = $claimed_id; + + if ($to_match->local_id === null) { + return new Auth_OpenID_FailureResponse($endpoint, + "Missing required field openid.identity"); + } + + $to_match_1_0 = $to_match->copy(); + $to_match_1_0->type_uris = array(Auth_OpenID_TYPE_1_0); + + if ($endpoint !== null) { + $result = $this->_verifyDiscoverySingle($endpoint, $to_match); + + if (is_a($result, 'Auth_OpenID_TypeURIMismatch')) { + $result = $this->_verifyDiscoverySingle($endpoint, + $to_match_1_0); + } + + if (Auth_OpenID::isFailure($result)) { + // oidutil.log("Error attempting to use stored + // discovery information: " + str(e)) + // oidutil.log("Attempting discovery to + // verify endpoint") + } else { + return $endpoint; + } + } + + // Endpoint is either bad (failed verification) or None + return $this->_discoverAndVerify($to_match->claimed_id, + array($to_match, $to_match_1_0)); + } + + /** + * @access private + */ + function _verifyDiscoverySingle($endpoint, $to_match) + { + // Every type URI that's in the to_match endpoint has to be + // present in the discovered endpoint. + foreach ($to_match->type_uris as $type_uri) { + if (!$endpoint->usesExtension($type_uri)) { + return new Auth_OpenID_TypeURIMismatch($endpoint, + "Required type ".$type_uri." not present"); + } + } + + // Fragments do not influence discovery, so we can't compare a + // claimed identifier with a fragment to discovered + // information. + list($defragged_claimed_id, $_) = + Auth_OpenID::urldefrag($to_match->claimed_id); + + if ($defragged_claimed_id != $endpoint->claimed_id) { + return new Auth_OpenID_FailureResponse($endpoint, + sprintf('Claimed ID does not match (different subjects!), ' . + 'Expected %s, got %s', $defragged_claimed_id, + $endpoint->claimed_id)); + } + + if ($to_match->getLocalID() != $endpoint->getLocalID()) { + return new Auth_OpenID_FailureResponse($endpoint, + sprintf('local_id mismatch. Expected %s, got %s', + $to_match->getLocalID(), $endpoint->getLocalID())); + } + + // If the server URL is None, this must be an OpenID 1 + // response, because op_endpoint is a required parameter in + // OpenID 2. In that case, we don't actually care what the + // discovered server_url is, because signature checking or + // check_auth should take care of that check for us. + if ($to_match->server_url === null) { + if ($to_match->preferredNamespace() != Auth_OpenID_OPENID1_NS) { + return new Auth_OpenID_FailureResponse($endpoint, + "Preferred namespace mismatch (bug)"); + } + } else if ($to_match->server_url != $endpoint->server_url) { + return new Auth_OpenID_FailureResponse($endpoint, + sprintf('OP Endpoint mismatch. Expected %s, got %s', + $to_match->server_url, $endpoint->server_url)); + } + + return null; + } + + /** + * @access private + */ + function _verifyDiscoveryResultsOpenID2($message, $endpoint) + { + $to_match = new Auth_OpenID_ServiceEndpoint(); + $to_match->type_uris = array(Auth_OpenID_TYPE_2_0); + $to_match->claimed_id = $message->getArg(Auth_OpenID_OPENID2_NS, + 'claimed_id'); + + $to_match->local_id = $message->getArg(Auth_OpenID_OPENID2_NS, + 'identity'); + + $to_match->server_url = $message->getArg(Auth_OpenID_OPENID2_NS, + 'op_endpoint'); + + if ($to_match->server_url === null) { + return new Auth_OpenID_FailureResponse($endpoint, + "OP Endpoint URL missing"); + } + + // claimed_id and identifier must both be present or both be + // absent + if (($to_match->claimed_id === null) && + ($to_match->local_id !== null)) { + return new Auth_OpenID_FailureResponse($endpoint, + 'openid.identity is present without openid.claimed_id'); + } + + if (($to_match->claimed_id !== null) && + ($to_match->local_id === null)) { + return new Auth_OpenID_FailureResponse($endpoint, + 'openid.claimed_id is present without openid.identity'); + } + + if ($to_match->claimed_id === null) { + // This is a response without identifiers, so there's + // really no checking that we can do, so return an + // endpoint that's for the specified `openid.op_endpoint' + return Auth_OpenID_ServiceEndpoint::fromOPEndpointURL( + $to_match->server_url); + } + + if (!$endpoint) { + // The claimed ID doesn't match, so we have to do + // discovery again. This covers not using sessions, OP + // identifier endpoints and responses that didn't match + // the original request. + // oidutil.log('No pre-discovered information supplied.') + return $this->_discoverAndVerify($to_match->claimed_id, + array($to_match)); + } else { + + // The claimed ID matches, so we use the endpoint that we + // discovered in initiation. This should be the most + // common case. + $result = $this->_verifyDiscoverySingle($endpoint, $to_match); + + if (Auth_OpenID::isFailure($result)) { + $endpoint = $this->_discoverAndVerify($to_match->claimed_id, + array($to_match)); + if (Auth_OpenID::isFailure($endpoint)) { + return $endpoint; + } + } + } + + // The endpoint we return should have the claimed ID from the + // message we just verified, fragment and all. + if ($endpoint->claimed_id != $to_match->claimed_id) { + $endpoint->claimed_id = $to_match->claimed_id; + } + + return $endpoint; + } + + /** + * @access private + */ + function _discoverAndVerify($claimed_id, $to_match_endpoints) + { + // oidutil.log('Performing discovery on %s' % (claimed_id,)) + list($unused, $services) = call_user_func($this->discoverMethod, + $claimed_id, + $this->fetcher); + + if (!$services) { + return new Auth_OpenID_FailureResponse(null, + sprintf("No OpenID information found at %s", + $claimed_id)); + } + + return $this->_verifyDiscoveryServices($claimed_id, $services, + $to_match_endpoints); + } + + /** + * @access private + */ + function _verifyDiscoveryServices($claimed_id, + $services, $to_match_endpoints) + { + // Search the services resulting from discovery to find one + // that matches the information from the assertion + + foreach ($services as $endpoint) { + foreach ($to_match_endpoints as $to_match_endpoint) { + $result = $this->_verifyDiscoverySingle($endpoint, + $to_match_endpoint); + + if (!Auth_OpenID::isFailure($result)) { + // It matches, so discover verification has + // succeeded. Return this endpoint. + return $endpoint; + } + } + } + + return new Auth_OpenID_FailureResponse(null, + sprintf('No matching endpoint found after discovering %s: %s', + $claimed_id, $result->message)); + } + + /** + * Extract the nonce from an OpenID 1 response. Return the nonce + * from the BARE_NS since we independently check the return_to + * arguments are the same as those in the response message. + * + * See the openid1_nonce_query_arg_name class variable + * + * @returns $nonce The nonce as a string or null + * + * @access private + */ + function _idResGetNonceOpenID1($message, $endpoint) + { + return $message->getArg(Auth_OpenID_BARE_NS, + $this->openid1_nonce_query_arg_name); + } + + /** + * @access private + */ + function _idResCheckNonce($message, $endpoint) + { + if ($message->isOpenID1()) { + // This indicates that the nonce was generated by the consumer + $nonce = $this->_idResGetNonceOpenID1($message, $endpoint); + $server_url = ''; + } else { + $nonce = $message->getArg(Auth_OpenID_OPENID2_NS, + 'response_nonce'); + + $server_url = $endpoint->server_url; + } + + if ($nonce === null) { + return new Auth_OpenID_FailureResponse($endpoint, + "Nonce missing from response"); + } + + $parts = Auth_OpenID_splitNonce($nonce); + + if ($parts === null) { + return new Auth_OpenID_FailureResponse($endpoint, + "Malformed nonce in response"); + } + + list($timestamp, $salt) = $parts; + + if (!$this->store->useNonce($server_url, $timestamp, $salt)) { + return new Auth_OpenID_FailureResponse($endpoint, + "Nonce already used or out of range"); + } + + return null; + } + + /** + * @access private + */ + function _idResCheckForFields($message) + { + $basic_fields = array('return_to', 'assoc_handle', 'sig', 'signed'); + $basic_sig_fields = array('return_to', 'identity'); + + $require_fields = array( + Auth_OpenID_OPENID2_NS => array_merge($basic_fields, + array('op_endpoint')), + + Auth_OpenID_OPENID1_NS => array_merge($basic_fields, + array('identity')) + ); + + $require_sigs = array( + Auth_OpenID_OPENID2_NS => array_merge($basic_sig_fields, + array('response_nonce', + 'claimed_id', + 'assoc_handle', + 'op_endpoint')), + Auth_OpenID_OPENID1_NS => array_merge($basic_sig_fields, + array('nonce')) + ); + + foreach ($require_fields[$message->getOpenIDNamespace()] as $field) { + if (!$message->hasKey(Auth_OpenID_OPENID_NS, $field)) { + return new Auth_OpenID_FailureResponse(null, + "Missing required field '".$field."'"); + } + } + + $signed_list_str = $message->getArg(Auth_OpenID_OPENID_NS, + 'signed', + Auth_OpenID_NO_DEFAULT); + if (Auth_OpenID::isFailure($signed_list_str)) { + return $signed_list_str; + } + $signed_list = explode(',', $signed_list_str); + + foreach ($require_sigs[$message->getOpenIDNamespace()] as $field) { + // Field is present and not in signed list + if ($message->hasKey(Auth_OpenID_OPENID_NS, $field) && + (!in_array($field, $signed_list))) { + return new Auth_OpenID_FailureResponse(null, + "'".$field."' not signed"); + } + } + + return null; + } + + /** + * @access private + */ + function _checkAuth($message, $server_url) + { + $request = $this->_createCheckAuthRequest($message); + if ($request === null) { + return false; + } + + $resp_message = $this->_makeKVPost($request, $server_url); + if (($resp_message === null) || + (is_a($resp_message, 'Auth_OpenID_ServerErrorContainer'))) { + return false; + } + + return $this->_processCheckAuthResponse($resp_message, $server_url); + } + + /** + * @access private + */ + function _createCheckAuthRequest($message) + { + $signed = $message->getArg(Auth_OpenID_OPENID_NS, 'signed'); + if ($signed) { + foreach (explode(',', $signed) as $k) { + $value = $message->getAliasedArg($k); + if ($value === null) { + return null; + } + } + } + $ca_message = $message->copy(); + $ca_message->setArg(Auth_OpenID_OPENID_NS, 'mode', + 'check_authentication'); + return $ca_message; + } + + /** + * @access private + */ + function _processCheckAuthResponse($response, $server_url) + { + $is_valid = $response->getArg(Auth_OpenID_OPENID_NS, 'is_valid', + 'false'); + + $invalidate_handle = $response->getArg(Auth_OpenID_OPENID_NS, + 'invalidate_handle'); + + if ($invalidate_handle !== null) { + $this->store->removeAssociation($server_url, + $invalidate_handle); + } + + if ($is_valid == 'true') { + return true; + } + + return false; + } + + /** + * Adapt a POST response to a Message. + * + * @param $response Result of a POST to an OpenID endpoint. + * + * @access private + */ + static function _httpResponseToMessage($response, $server_url) + { + // Should this function be named Message.fromHTTPResponse instead? + $response_message = Auth_OpenID_Message::fromKVForm($response->body); + + if ($response->status == 400) { + return Auth_OpenID_ServerErrorContainer::fromMessage( + $response_message); + } else if ($response->status != 200 and $response->status != 206) { + return null; + } + + return $response_message; + } + + /** + * @access private + */ + function _makeKVPost($message, $server_url) + { + $body = $message->toURLEncoded(); + $resp = $this->fetcher->post($server_url, $body); + + if ($resp === null) { + return null; + } + + return $this->_httpResponseToMessage($resp, $server_url); + } + + /** + * @access private + */ + function _getAssociation($endpoint) + { + if (!$this->_use_assocs) { + return null; + } + + $assoc = $this->store->getAssociation($endpoint->server_url); + + if (($assoc === null) || + ($assoc->getExpiresIn() <= 0)) { + + $assoc = $this->_negotiateAssociation($endpoint); + + if ($assoc !== null) { + $this->store->storeAssociation($endpoint->server_url, + $assoc); + } + } + + return $assoc; + } + + /** + * Handle ServerErrors resulting from association requests. + * + * @return $result If server replied with an C{unsupported-type} + * error, return a tuple of supported C{association_type}, + * C{session_type}. Otherwise logs the error and returns null. + * + * @access private + */ + function _extractSupportedAssociationType($server_error, $endpoint, + $assoc_type) + { + // Any error message whose code is not 'unsupported-type' + // should be considered a total failure. + if (($server_error->error_code != 'unsupported-type') || + ($server_error->message->isOpenID1())) { + return null; + } + + // The server didn't like the association/session type that we + // sent, and it sent us back a message that might tell us how + // to handle it. + + // Extract the session_type and assoc_type from the error + // message + $assoc_type = $server_error->message->getArg(Auth_OpenID_OPENID_NS, + 'assoc_type'); + + $session_type = $server_error->message->getArg(Auth_OpenID_OPENID_NS, + 'session_type'); + + if (($assoc_type === null) || ($session_type === null)) { + return null; + } else if (!$this->negotiator->isAllowed($assoc_type, + $session_type)) { + return null; + } else { + return array($assoc_type, $session_type); + } + } + + /** + * @access private + */ + function _negotiateAssociation($endpoint) + { + // Get our preferred session/association type from the negotiatior. + list($assoc_type, $session_type) = $this->negotiator->getAllowedType(); + + $assoc = $this->_requestAssociation( + $endpoint, $assoc_type, $session_type); + + if (Auth_OpenID::isFailure($assoc)) { + return null; + } + + if (is_a($assoc, 'Auth_OpenID_ServerErrorContainer')) { + $why = $assoc; + + $supportedTypes = $this->_extractSupportedAssociationType( + $why, $endpoint, $assoc_type); + + if ($supportedTypes !== null) { + list($assoc_type, $session_type) = $supportedTypes; + + // Attempt to create an association from the assoc_type + // and session_type that the server told us it + // supported. + $assoc = $this->_requestAssociation( + $endpoint, $assoc_type, $session_type); + + if (is_a($assoc, 'Auth_OpenID_ServerErrorContainer')) { + // Do not keep trying, since it rejected the + // association type that it told us to use. + // oidutil.log('Server %s refused its suggested association + // 'type: session_type=%s, assoc_type=%s' + // % (endpoint.server_url, session_type, + // assoc_type)) + return null; + } else { + return $assoc; + } + } else { + return null; + } + } else { + return $assoc; + } + } + + /** + * @access private + */ + function _requestAssociation($endpoint, $assoc_type, $session_type) + { + list($assoc_session, $args) = $this->_createAssociateRequest( + $endpoint, $assoc_type, $session_type); + + $response_message = $this->_makeKVPost($args, $endpoint->server_url); + + if ($response_message === null) { + // oidutil.log('openid.associate request failed: %s' % (why[0],)) + return null; + } else if (is_a($response_message, + 'Auth_OpenID_ServerErrorContainer')) { + return $response_message; + } + + return $this->_extractAssociation($response_message, $assoc_session); + } + + /** + * @access private + */ + function _extractAssociation($assoc_response, $assoc_session) + { + // Extract the common fields from the response, raising an + // exception if they are not found + $assoc_type = $assoc_response->getArg( + Auth_OpenID_OPENID_NS, 'assoc_type', + Auth_OpenID_NO_DEFAULT); + + if (Auth_OpenID::isFailure($assoc_type)) { + return $assoc_type; + } + + $assoc_handle = $assoc_response->getArg( + Auth_OpenID_OPENID_NS, 'assoc_handle', + Auth_OpenID_NO_DEFAULT); + + if (Auth_OpenID::isFailure($assoc_handle)) { + return $assoc_handle; + } + + // expires_in is a base-10 string. The Python parsing will + // accept literals that have whitespace around them and will + // accept negative values. Neither of these are really in-spec, + // but we think it's OK to accept them. + $expires_in_str = $assoc_response->getArg( + Auth_OpenID_OPENID_NS, 'expires_in', + Auth_OpenID_NO_DEFAULT); + + if (Auth_OpenID::isFailure($expires_in_str)) { + return $expires_in_str; + } + + $expires_in = Auth_OpenID::intval($expires_in_str); + if ($expires_in === false) { + + $err = sprintf("Could not parse expires_in from association ". + "response %s", print_r($assoc_response, true)); + return new Auth_OpenID_FailureResponse(null, $err); + } + + // OpenID 1 has funny association session behaviour. + if ($assoc_response->isOpenID1()) { + $session_type = $this->_getOpenID1SessionType($assoc_response); + } else { + $session_type = $assoc_response->getArg( + Auth_OpenID_OPENID2_NS, 'session_type', + Auth_OpenID_NO_DEFAULT); + + if (Auth_OpenID::isFailure($session_type)) { + return $session_type; + } + } + + // Session type mismatch + if ($assoc_session->session_type != $session_type) { + if ($assoc_response->isOpenID1() && + ($session_type == 'no-encryption')) { + // In OpenID 1, any association request can result in + // a 'no-encryption' association response. Setting + // assoc_session to a new no-encryption session should + // make the rest of this function work properly for + // that case. + $assoc_session = new Auth_OpenID_PlainTextConsumerSession(); + } else { + // Any other mismatch, regardless of protocol version + // results in the failure of the association session + // altogether. + return null; + } + } + + // Make sure assoc_type is valid for session_type + if (!in_array($assoc_type, $assoc_session->allowed_assoc_types)) { + return null; + } + + // Delegate to the association session to extract the secret + // from the response, however is appropriate for that session + // type. + $secret = $assoc_session->extractSecret($assoc_response); + + if ($secret === null) { + return null; + } + + return Auth_OpenID_Association::fromExpiresIn( + $expires_in, $assoc_handle, $secret, $assoc_type); + } + + /** + * @access private + */ + function _createAssociateRequest($endpoint, $assoc_type, $session_type) + { + if (array_key_exists($session_type, $this->session_types)) { + $session_type_class = $this->session_types[$session_type]; + + if (is_callable($session_type_class)) { + $assoc_session = $session_type_class(); + } else { + $assoc_session = new $session_type_class(); + } + } else { + return null; + } + + $args = array( + 'mode' => 'associate', + 'assoc_type' => $assoc_type); + + if (!$endpoint->compatibilityMode()) { + $args['ns'] = Auth_OpenID_OPENID2_NS; + } + + // Leave out the session type if we're in compatibility mode + // *and* it's no-encryption. + if ((!$endpoint->compatibilityMode()) || + ($assoc_session->session_type != 'no-encryption')) { + $args['session_type'] = $assoc_session->session_type; + } + + $args = array_merge($args, $assoc_session->getRequest()); + $message = Auth_OpenID_Message::fromOpenIDArgs($args); + return array($assoc_session, $message); + } + + /** + * Given an association response message, extract the OpenID 1.X + * session type. + * + * This function mostly takes care of the 'no-encryption' default + * behavior in OpenID 1. + * + * If the association type is plain-text, this function will + * return 'no-encryption' + * + * @access private + * @return $typ The association type for this message + */ + function _getOpenID1SessionType($assoc_response) + { + // If it's an OpenID 1 message, allow session_type to default + // to None (which signifies "no-encryption") + $session_type = $assoc_response->getArg(Auth_OpenID_OPENID1_NS, + 'session_type'); + + // Handle the differences between no-encryption association + // respones in OpenID 1 and 2: + + // no-encryption is not really a valid session type for OpenID + // 1, but we'll accept it anyway, while issuing a warning. + if ($session_type == 'no-encryption') { + // oidutil.log('WARNING: OpenID server sent "no-encryption"' + // 'for OpenID 1.X') + } else if (($session_type == '') || ($session_type === null)) { + // Missing or empty session type is the way to flag a + // 'no-encryption' response. Change the session type to + // 'no-encryption' so that it can be handled in the same + // way as OpenID 2 'no-encryption' respones. + $session_type = 'no-encryption'; + } + + return $session_type; + } +} + +/** + * This class represents an authentication request from a consumer to + * an OpenID server. + * + * @package OpenID + */ +class Auth_OpenID_AuthRequest { + + /** + * Initialize an authentication request with the specified token, + * association, and endpoint. + * + * Users of this library should not create instances of this + * class. Instances of this class are created by the library when + * needed. + */ + function Auth_OpenID_AuthRequest($endpoint, $assoc) + { + $this->assoc = $assoc; + $this->endpoint = $endpoint; + $this->return_to_args = array(); + $this->message = new Auth_OpenID_Message( + $endpoint->preferredNamespace()); + $this->_anonymous = false; + } + + /** + * Add an extension to this checkid request. + * + * $extension_request: An object that implements the extension + * request interface for adding arguments to an OpenID message. + */ + function addExtension($extension_request) + { + $extension_request->toMessage($this->message); + } + + /** + * Add an extension argument to this OpenID authentication + * request. + * + * Use caution when adding arguments, because they will be + * URL-escaped and appended to the redirect URL, which can easily + * get quite long. + * + * @param string $namespace The namespace for the extension. For + * example, the simple registration extension uses the namespace + * 'sreg'. + * + * @param string $key The key within the extension namespace. For + * example, the nickname field in the simple registration + * extension's key is 'nickname'. + * + * @param string $value The value to provide to the server for + * this argument. + */ + function addExtensionArg($namespace, $key, $value) + { + return $this->message->setArg($namespace, $key, $value); + } + + /** + * Set whether this request should be made anonymously. If a + * request is anonymous, the identifier will not be sent in the + * request. This is only useful if you are making another kind of + * request with an extension in this request. + * + * Anonymous requests are not allowed when the request is made + * with OpenID 1. + */ + function setAnonymous($is_anonymous) + { + if ($is_anonymous && $this->message->isOpenID1()) { + return false; + } else { + $this->_anonymous = $is_anonymous; + return true; + } + } + + /** + * Produce a {@link Auth_OpenID_Message} representing this + * request. + * + * @param string $realm The URL (or URL pattern) that identifies + * your web site to the user when she is authorizing it. + * + * @param string $return_to The URL that the OpenID provider will + * send the user back to after attempting to verify her identity. + * + * Not specifying a return_to URL means that the user will not be + * returned to the site issuing the request upon its completion. + * + * @param bool $immediate If true, the OpenID provider is to send + * back a response immediately, useful for behind-the-scenes + * authentication attempts. Otherwise the OpenID provider may + * engage the user before providing a response. This is the + * default case, as the user may need to provide credentials or + * approve the request before a positive response can be sent. + */ + function getMessage($realm, $return_to=null, $immediate=false) + { + if ($return_to) { + $return_to = Auth_OpenID::appendArgs($return_to, + $this->return_to_args); + } else if ($immediate) { + // raise ValueError( + // '"return_to" is mandatory when + //using "checkid_immediate"') + return new Auth_OpenID_FailureResponse(null, + "'return_to' is mandatory when using checkid_immediate"); + } else if ($this->message->isOpenID1()) { + // raise ValueError('"return_to" is + // mandatory for OpenID 1 requests') + return new Auth_OpenID_FailureResponse(null, + "'return_to' is mandatory for OpenID 1 requests"); + } else if ($this->return_to_args) { + // raise ValueError('extra "return_to" arguments + // were specified, but no return_to was specified') + return new Auth_OpenID_FailureResponse(null, + "extra 'return_to' arguments where specified, " . + "but no return_to was specified"); + } + + if ($immediate) { + $mode = 'checkid_immediate'; + } else { + $mode = 'checkid_setup'; + } + + $message = $this->message->copy(); + if ($message->isOpenID1()) { + $realm_key = 'trust_root'; + } else { + $realm_key = 'realm'; + } + + $message->updateArgs(Auth_OpenID_OPENID_NS, + array( + $realm_key => $realm, + 'mode' => $mode, + 'return_to' => $return_to)); + + if (!$this->_anonymous) { + if ($this->endpoint->isOPIdentifier()) { + // This will never happen when we're in compatibility + // mode, as long as isOPIdentifier() returns False + // whenever preferredNamespace() returns OPENID1_NS. + $claimed_id = $request_identity = + Auth_OpenID_IDENTIFIER_SELECT; + } else { + $request_identity = $this->endpoint->getLocalID(); + $claimed_id = $this->endpoint->claimed_id; + } + + // This is true for both OpenID 1 and 2 + $message->setArg(Auth_OpenID_OPENID_NS, 'identity', + $request_identity); + + if ($message->isOpenID2()) { + $message->setArg(Auth_OpenID_OPENID2_NS, 'claimed_id', + $claimed_id); + } + } + + if ($this->assoc) { + $message->setArg(Auth_OpenID_OPENID_NS, 'assoc_handle', + $this->assoc->handle); + } + + return $message; + } + + function redirectURL($realm, $return_to = null, + $immediate = false) + { + $message = $this->getMessage($realm, $return_to, $immediate); + + if (Auth_OpenID::isFailure($message)) { + return $message; + } + + return $message->toURL($this->endpoint->server_url); + } + + /** + * Get html for a form to submit this request to the IDP. + * + * form_tag_attrs: An array of attributes to be added to the form + * tag. 'accept-charset' and 'enctype' have defaults that can be + * overridden. If a value is supplied for 'action' or 'method', it + * will be replaced. + */ + function formMarkup($realm, $return_to=null, $immediate=false, + $form_tag_attrs=null) + { + $message = $this->getMessage($realm, $return_to, $immediate); + + if (Auth_OpenID::isFailure($message)) { + return $message; + } + + return $message->toFormMarkup($this->endpoint->server_url, + $form_tag_attrs); + } + + /** + * Get a complete html document that will autosubmit the request + * to the IDP. + * + * Wraps formMarkup. See the documentation for that function. + */ + function htmlMarkup($realm, $return_to=null, $immediate=false, + $form_tag_attrs=null) + { + $form = $this->formMarkup($realm, $return_to, $immediate, + $form_tag_attrs); + + if (Auth_OpenID::isFailure($form)) { + return $form; + } + return Auth_OpenID::autoSubmitHTML($form); + } + + function shouldSendRedirect() + { + return $this->endpoint->compatibilityMode(); + } +} + +/** + * The base class for responses from the Auth_OpenID_Consumer. + * + * @package OpenID + */ +class Auth_OpenID_ConsumerResponse { + var $status = null; + + function setEndpoint($endpoint) + { + $this->endpoint = $endpoint; + if ($endpoint === null) { + $this->identity_url = null; + } else { + $this->identity_url = $endpoint->claimed_id; + } + } + + /** + * Return the display identifier for this response. + * + * The display identifier is related to the Claimed Identifier, but the + * two are not always identical. The display identifier is something the + * user should recognize as what they entered, whereas the response's + * claimed identifier (in the identity_url attribute) may have extra + * information for better persistence. + * + * URLs will be stripped of their fragments for display. XRIs will + * display the human-readable identifier (i-name) instead of the + * persistent identifier (i-number). + * + * Use the display identifier in your user interface. Use + * identity_url for querying your database or authorization server. + * + */ + function getDisplayIdentifier() + { + if ($this->endpoint !== null) { + return $this->endpoint->getDisplayIdentifier(); + } + return null; + } +} + +/** + * A response with a status of Auth_OpenID_SUCCESS. Indicates that + * this request is a successful acknowledgement from the OpenID server + * that the supplied URL is, indeed controlled by the requesting + * agent. This has three relevant attributes: + * + * claimed_id - The identity URL that has been authenticated + * + * signed_args - The arguments in the server's response that were + * signed and verified. + * + * status - Auth_OpenID_SUCCESS. + * + * @package OpenID + */ +class Auth_OpenID_SuccessResponse extends Auth_OpenID_ConsumerResponse { + var $status = Auth_OpenID_SUCCESS; + + /** + * @access private + */ + function Auth_OpenID_SuccessResponse($endpoint, $message, $signed_args=null) + { + $this->endpoint = $endpoint; + $this->identity_url = $endpoint->claimed_id; + $this->signed_args = $signed_args; + $this->message = $message; + + if ($this->signed_args === null) { + $this->signed_args = array(); + } + } + + /** + * Extract signed extension data from the server's response. + * + * @param string $prefix The extension namespace from which to + * extract the extension data. + */ + function extensionResponse($namespace_uri, $require_signed) + { + if ($require_signed) { + return $this->getSignedNS($namespace_uri); + } else { + return $this->message->getArgs($namespace_uri); + } + } + + function isOpenID1() + { + return $this->message->isOpenID1(); + } + + function isSigned($ns_uri, $ns_key) + { + // Return whether a particular key is signed, regardless of + // its namespace alias + return in_array($this->message->getKey($ns_uri, $ns_key), + $this->signed_args); + } + + function getSigned($ns_uri, $ns_key, $default = null) + { + // Return the specified signed field if available, otherwise + // return default + if ($this->isSigned($ns_uri, $ns_key)) { + return $this->message->getArg($ns_uri, $ns_key, $default); + } else { + return $default; + } + } + + function getSignedNS($ns_uri) + { + $args = array(); + + $msg_args = $this->message->getArgs($ns_uri); + if (Auth_OpenID::isFailure($msg_args)) { + return null; + } + + foreach ($msg_args as $key => $value) { + if (!$this->isSigned($ns_uri, $key)) { + unset($msg_args[$key]); + } + } + + return $msg_args; + } + + /** + * Get the openid.return_to argument from this response. + * + * This is useful for verifying that this request was initiated by + * this consumer. + * + * @return string $return_to The return_to URL supplied to the + * server on the initial request, or null if the response did not + * contain an 'openid.return_to' argument. + */ + function getReturnTo() + { + return $this->getSigned(Auth_OpenID_OPENID_NS, 'return_to'); + } +} + +/** + * A response with a status of Auth_OpenID_FAILURE. Indicates that the + * OpenID protocol has failed. This could be locally or remotely + * triggered. This has three relevant attributes: + * + * claimed_id - The identity URL for which authentication was + * attempted, if it can be determined. Otherwise, null. + * + * message - A message indicating why the request failed, if one is + * supplied. Otherwise, null. + * + * status - Auth_OpenID_FAILURE. + * + * @package OpenID + */ +class Auth_OpenID_FailureResponse extends Auth_OpenID_ConsumerResponse { + var $status = Auth_OpenID_FAILURE; + + function Auth_OpenID_FailureResponse($endpoint, $message = null, + $contact = null, $reference = null) + { + $this->setEndpoint($endpoint); + $this->message = $message; + $this->contact = $contact; + $this->reference = $reference; + } +} + +/** + * A specific, internal failure used to detect type URI mismatch. + * + * @package OpenID + */ +class Auth_OpenID_TypeURIMismatch extends Auth_OpenID_FailureResponse { +} + +/** + * Exception that is raised when the server returns a 400 response + * code to a direct request. + * + * @package OpenID + */ +class Auth_OpenID_ServerErrorContainer { + function Auth_OpenID_ServerErrorContainer($error_text, + $error_code, + $message) + { + $this->error_text = $error_text; + $this->error_code = $error_code; + $this->message = $message; + } + + /** + * @access private + */ + static function fromMessage($message) + { + $error_text = $message->getArg( + Auth_OpenID_OPENID_NS, 'error', '<no error message supplied>'); + $error_code = $message->getArg(Auth_OpenID_OPENID_NS, 'error_code'); + return new Auth_OpenID_ServerErrorContainer($error_text, + $error_code, + $message); + } +} + +/** + * A response with a status of Auth_OpenID_CANCEL. Indicates that the + * user cancelled the OpenID authentication request. This has two + * relevant attributes: + * + * claimed_id - The identity URL for which authentication was + * attempted, if it can be determined. Otherwise, null. + * + * status - Auth_OpenID_SUCCESS. + * + * @package OpenID + */ +class Auth_OpenID_CancelResponse extends Auth_OpenID_ConsumerResponse { + var $status = Auth_OpenID_CANCEL; + + function Auth_OpenID_CancelResponse($endpoint) + { + $this->setEndpoint($endpoint); + } +} + +/** + * A response with a status of Auth_OpenID_SETUP_NEEDED. Indicates + * that the request was in immediate mode, and the server is unable to + * authenticate the user without further interaction. + * + * claimed_id - The identity URL for which authentication was + * attempted. + * + * setup_url - A URL that can be used to send the user to the server + * to set up for authentication. The user should be redirected in to + * the setup_url, either in the current window or in a new browser + * window. Null in OpenID 2. + * + * status - Auth_OpenID_SETUP_NEEDED. + * + * @package OpenID + */ +class Auth_OpenID_SetupNeededResponse extends Auth_OpenID_ConsumerResponse { + var $status = Auth_OpenID_SETUP_NEEDED; + + function Auth_OpenID_SetupNeededResponse($endpoint, + $setup_url = null) + { + $this->setEndpoint($endpoint); + $this->setup_url = $setup_url; + } +} + + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/CryptUtil.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/CryptUtil.php new file mode 100644 index 000000000..3c60cea17 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/CryptUtil.php @@ -0,0 +1,122 @@ +<?php + +/** + * CryptUtil: A suite of wrapper utility functions for the OpenID + * library. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @access private + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +if (!defined('Auth_OpenID_RAND_SOURCE')) { + /** + * The filename for a source of random bytes. Define this yourself + * if you have a different source of randomness. + */ + define('Auth_OpenID_RAND_SOURCE', '/dev/urandom'); +} + +class Auth_OpenID_CryptUtil { + /** + * Get the specified number of random bytes. + * + * Attempts to use a cryptographically secure (not predictable) + * source of randomness if available. If there is no high-entropy + * randomness source available, it will fail. As a last resort, + * for non-critical systems, define + * <code>Auth_OpenID_RAND_SOURCE</code> as <code>null</code>, and + * the code will fall back on a pseudo-random number generator. + * + * @param int $num_bytes The length of the return value + * @return string $bytes random bytes + */ + static function getBytes($num_bytes) + { + static $f = null; + $bytes = ''; + if ($f === null) { + if (Auth_OpenID_RAND_SOURCE === null) { + $f = false; + } else { + $f = @fopen(Auth_OpenID_RAND_SOURCE, "r"); + if ($f === false) { + $msg = 'Define Auth_OpenID_RAND_SOURCE as null to ' . + ' continue with an insecure random number generator.'; + trigger_error($msg, E_USER_ERROR); + } + } + } + if ($f === false) { + // pseudorandom used + $bytes = ''; + for ($i = 0; $i < $num_bytes; $i += 4) { + $bytes .= pack('L', mt_rand()); + } + $bytes = substr($bytes, 0, $num_bytes); + } else { + $bytes = fread($f, $num_bytes); + } + return $bytes; + } + + /** + * Produce a string of length random bytes, chosen from chrs. If + * $chrs is null, the resulting string may contain any characters. + * + * @param integer $length The length of the resulting + * randomly-generated string + * @param string $chrs A string of characters from which to choose + * to build the new string + * @return string $result A string of randomly-chosen characters + * from $chrs + */ + static function randomString($length, $population = null) + { + if ($population === null) { + return Auth_OpenID_CryptUtil::getBytes($length); + } + + $popsize = strlen($population); + + if ($popsize > 256) { + $msg = 'More than 256 characters supplied to ' . __FUNCTION__; + trigger_error($msg, E_USER_ERROR); + } + + $duplicate = 256 % $popsize; + + $str = ""; + for ($i = 0; $i < $length; $i++) { + do { + $n = ord(Auth_OpenID_CryptUtil::getBytes(1)); + } while ($n < $duplicate); + + $n %= $popsize; + $str .= $population[$n]; + } + + return $str; + } + + static function constEq($s1, $s2) + { + if (strlen($s1) != strlen($s2)) { + return false; + } + + $result = true; + $length = strlen($s1); + for ($i = 0; $i < $length; $i++) { + $result &= ($s1[$i] == $s2[$i]); + } + return $result; + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/DatabaseConnection.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/DatabaseConnection.php new file mode 100644 index 000000000..0c7d08f91 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/DatabaseConnection.php @@ -0,0 +1,130 @@ +<?php + +/** + * The Auth_OpenID_DatabaseConnection class, which is used to emulate + * a PEAR database connection. + * + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +/** + * An empty base class intended to emulate PEAR connection + * functionality in applications that supply their own database + * abstraction mechanisms. See {@link Auth_OpenID_SQLStore} for more + * information. You should subclass this class if you need to create + * an SQL store that needs to access its database using an + * application's database abstraction layer instead of a PEAR database + * connection. Any subclass of Auth_OpenID_DatabaseConnection MUST + * adhere to the interface specified here. + * + * @package OpenID + */ +class Auth_OpenID_DatabaseConnection { + /** + * Sets auto-commit mode on this database connection. + * + * @param bool $mode True if auto-commit is to be used; false if + * not. + */ + function autoCommit($mode) + { + } + + /** + * Run an SQL query with the specified parameters, if any. + * + * @param string $sql An SQL string with placeholders. The + * placeholders are assumed to be specific to the database engine + * for this connection. + * + * @param array $params An array of parameters to insert into the + * SQL string using this connection's escaping mechanism. + * + * @return mixed $result The result of calling this connection's + * internal query function. The type of result depends on the + * underlying database engine. This method is usually used when + * the result of a query is not important, like a DDL query. + */ + function query($sql, $params = array()) + { + } + + /** + * Starts a transaction on this connection, if supported. + */ + function begin() + { + } + + /** + * Commits a transaction on this connection, if supported. + */ + function commit() + { + } + + /** + * Performs a rollback on this connection, if supported. + */ + function rollback() + { + } + + /** + * Run an SQL query and return the first column of the first row + * of the result set, if any. + * + * @param string $sql An SQL string with placeholders. The + * placeholders are assumed to be specific to the database engine + * for this connection. + * + * @param array $params An array of parameters to insert into the + * SQL string using this connection's escaping mechanism. + * + * @return mixed $result The value of the first column of the + * first row of the result set. False if no such result was + * found. + */ + function getOne($sql, $params = array()) + { + } + + /** + * Run an SQL query and return the first row of the result set, if + * any. + * + * @param string $sql An SQL string with placeholders. The + * placeholders are assumed to be specific to the database engine + * for this connection. + * + * @param array $params An array of parameters to insert into the + * SQL string using this connection's escaping mechanism. + * + * @return array $result The first row of the result set, if any, + * keyed on column name. False if no such result was found. + */ + function getRow($sql, $params = array()) + { + } + + /** + * Run an SQL query with the specified parameters, if any. + * + * @param string $sql An SQL string with placeholders. The + * placeholders are assumed to be specific to the database engine + * for this connection. + * + * @param array $params An array of parameters to insert into the + * SQL string using this connection's escaping mechanism. + * + * @return array $result An array of arrays representing the + * result of the query; each array is keyed on column name. + */ + function getAll($sql, $params = array()) + { + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/DiffieHellman.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/DiffieHellman.php new file mode 100644 index 000000000..3e25b7dbb --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/DiffieHellman.php @@ -0,0 +1,113 @@ +<?php + +/** + * The OpenID library's Diffie-Hellman implementation. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @access private + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +require_once 'Auth/OpenID.php'; +require_once 'Auth/OpenID/BigMath.php'; + +function Auth_OpenID_getDefaultMod() +{ + return '155172898181473697471232257763715539915724801'. + '966915404479707795314057629378541917580651227423'. + '698188993727816152646631438561595825688188889951'. + '272158842675419950341258706556549803580104870537'. + '681476726513255747040765857479291291572334510643'. + '245094715007229621094194349783925984760375594985'. + '848253359305585439638443'; +} + +function Auth_OpenID_getDefaultGen() +{ + return '2'; +} + +/** + * The Diffie-Hellman key exchange class. This class relies on + * {@link Auth_OpenID_MathLibrary} to perform large number operations. + * + * @access private + * @package OpenID + */ +class Auth_OpenID_DiffieHellman { + + var $mod; + var $gen; + var $private; + var $lib = null; + + function Auth_OpenID_DiffieHellman($mod = null, $gen = null, + $private = null, $lib = null) + { + if ($lib === null) { + $this->lib = Auth_OpenID_getMathLib(); + } else { + $this->lib = $lib; + } + + if ($mod === null) { + $this->mod = $this->lib->init(Auth_OpenID_getDefaultMod()); + } else { + $this->mod = $mod; + } + + if ($gen === null) { + $this->gen = $this->lib->init(Auth_OpenID_getDefaultGen()); + } else { + $this->gen = $gen; + } + + if ($private === null) { + $r = $this->lib->rand($this->mod); + $this->private = $this->lib->add($r, 1); + } else { + $this->private = $private; + } + + $this->public = $this->lib->powmod($this->gen, $this->private, + $this->mod); + } + + function getSharedSecret($composite) + { + return $this->lib->powmod($composite, $this->private, $this->mod); + } + + function getPublicKey() + { + return $this->public; + } + + function usingDefaultValues() + { + return ($this->mod == Auth_OpenID_getDefaultMod() && + $this->gen == Auth_OpenID_getDefaultGen()); + } + + function xorSecret($composite, $secret, $hash_func) + { + $dh_shared = $this->getSharedSecret($composite); + $dh_shared_str = $this->lib->longToBinary($dh_shared); + $hash_dh_shared = $hash_func($dh_shared_str); + + $xsecret = ""; + for ($i = 0; $i < Auth_OpenID::bytes($secret); $i++) { + $xsecret .= chr(ord($secret[$i]) ^ ord($hash_dh_shared[$i])); + } + + return $xsecret; + } +} + + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/Discover.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/Discover.php new file mode 100644 index 000000000..7b0c640c5 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/Discover.php @@ -0,0 +1,606 @@ +<?php + +/** + * The OpenID and Yadis discovery implementation for OpenID 1.2. + */ + +require_once "Auth/OpenID.php"; +require_once "Auth/OpenID/Parse.php"; +require_once "Auth/OpenID/Message.php"; +require_once "Auth/Yadis/XRIRes.php"; +require_once "Auth/Yadis/Yadis.php"; + +// XML namespace value +define('Auth_OpenID_XMLNS_1_0', 'http://openid.net/xmlns/1.0'); + +// Yadis service types +define('Auth_OpenID_TYPE_1_2', 'http://openid.net/signon/1.2'); +define('Auth_OpenID_TYPE_1_1', 'http://openid.net/signon/1.1'); +define('Auth_OpenID_TYPE_1_0', 'http://openid.net/signon/1.0'); +define('Auth_OpenID_TYPE_2_0_IDP', 'http://specs.openid.net/auth/2.0/server'); +define('Auth_OpenID_TYPE_2_0', 'http://specs.openid.net/auth/2.0/signon'); +define('Auth_OpenID_RP_RETURN_TO_URL_TYPE', + 'http://specs.openid.net/auth/2.0/return_to'); + +function Auth_OpenID_getOpenIDTypeURIs() +{ + return array(Auth_OpenID_TYPE_2_0_IDP, + Auth_OpenID_TYPE_2_0, + Auth_OpenID_TYPE_1_2, + Auth_OpenID_TYPE_1_1, + Auth_OpenID_TYPE_1_0); +} + +function Auth_OpenID_getOpenIDConsumerTypeURIs() +{ + return array(Auth_OpenID_RP_RETURN_TO_URL_TYPE); +} + + +/* + * Provides a user-readable interpretation of a type uri. + * Useful for error messages. + */ +function Auth_OpenID_getOpenIDTypeName($type_uri) { + switch ($type_uri) { + case Auth_OpenID_TYPE_2_0_IDP: + return 'OpenID 2.0 IDP'; + case Auth_OpenID_TYPE_2_0: + return 'OpenID 2.0'; + case Auth_OpenID_TYPE_1_2: + return 'OpenID 1.2'; + case Auth_OpenID_TYPE_1_1: + return 'OpenID 1.1'; + case Auth_OpenID_TYPE_1_0: + return 'OpenID 1.0'; + case Auth_OpenID_RP_RETURN_TO_URL_TYPE: + return 'OpenID relying party'; + } +} + +/** + * Object representing an OpenID service endpoint. + */ +class Auth_OpenID_ServiceEndpoint { + function Auth_OpenID_ServiceEndpoint() + { + $this->claimed_id = null; + $this->server_url = null; + $this->type_uris = array(); + $this->local_id = null; + $this->canonicalID = null; + $this->used_yadis = false; // whether this came from an XRDS + $this->display_identifier = null; + } + + function getDisplayIdentifier() + { + if ($this->display_identifier) { + return $this->display_identifier; + } + if (! $this->claimed_id) { + return $this->claimed_id; + } + $parsed = parse_url($this->claimed_id); + $scheme = $parsed['scheme']; + $host = $parsed['host']; + $path = $parsed['path']; + if (array_key_exists('query', $parsed)) { + $query = $parsed['query']; + $no_frag = "$scheme://$host$path?$query"; + } else { + $no_frag = "$scheme://$host$path"; + } + return $no_frag; + } + + function usesExtension($extension_uri) + { + return in_array($extension_uri, $this->type_uris); + } + + function preferredNamespace() + { + if (in_array(Auth_OpenID_TYPE_2_0_IDP, $this->type_uris) || + in_array(Auth_OpenID_TYPE_2_0, $this->type_uris)) { + return Auth_OpenID_OPENID2_NS; + } else { + return Auth_OpenID_OPENID1_NS; + } + } + + /* + * Query this endpoint to see if it has any of the given type + * URIs. This is useful for implementing other endpoint classes + * that e.g. need to check for the presence of multiple versions + * of a single protocol. + * + * @param $type_uris The URIs that you wish to check + * + * @return all types that are in both in type_uris and + * $this->type_uris + */ + function matchTypes($type_uris) + { + $result = array(); + foreach ($type_uris as $test_uri) { + if ($this->supportsType($test_uri)) { + $result[] = $test_uri; + } + } + + return $result; + } + + function supportsType($type_uri) + { + // Does this endpoint support this type? + return ((in_array($type_uri, $this->type_uris)) || + (($type_uri == Auth_OpenID_TYPE_2_0) && + $this->isOPIdentifier())); + } + + function compatibilityMode() + { + return $this->preferredNamespace() != Auth_OpenID_OPENID2_NS; + } + + function isOPIdentifier() + { + return in_array(Auth_OpenID_TYPE_2_0_IDP, $this->type_uris); + } + + static function fromOPEndpointURL($op_endpoint_url) + { + // Construct an OP-Identifier OpenIDServiceEndpoint object for + // a given OP Endpoint URL + $obj = new Auth_OpenID_ServiceEndpoint(); + $obj->server_url = $op_endpoint_url; + $obj->type_uris = array(Auth_OpenID_TYPE_2_0_IDP); + return $obj; + } + + function parseService($yadis_url, $uri, $type_uris, $service_element) + { + // Set the state of this object based on the contents of the + // service element. Return true if successful, false if not + // (if findOPLocalIdentifier returns false). + $this->type_uris = $type_uris; + $this->server_url = $uri; + $this->used_yadis = true; + + if (!$this->isOPIdentifier()) { + $this->claimed_id = $yadis_url; + $this->local_id = Auth_OpenID_findOPLocalIdentifier( + $service_element, + $this->type_uris); + if ($this->local_id === false) { + return false; + } + } + + return true; + } + + function getLocalID() + { + // Return the identifier that should be sent as the + // openid.identity_url parameter to the server. + if ($this->local_id === null && $this->canonicalID === null) { + return $this->claimed_id; + } else { + if ($this->local_id) { + return $this->local_id; + } else { + return $this->canonicalID; + } + } + } + + /* + * Parse the given document as XRDS looking for OpenID consumer services. + * + * @return array of Auth_OpenID_ServiceEndpoint or null if the + * document cannot be parsed. + */ + function consumerFromXRDS($uri, $xrds_text) + { + $xrds =& Auth_Yadis_XRDS::parseXRDS($xrds_text); + + if ($xrds) { + $yadis_services = + $xrds->services(array('filter_MatchesAnyOpenIDConsumerType')); + return Auth_OpenID_makeOpenIDEndpoints($uri, $yadis_services); + } + + return null; + } + + /* + * Parse the given document as XRDS looking for OpenID services. + * + * @return array of Auth_OpenID_ServiceEndpoint or null if the + * document cannot be parsed. + */ + static function fromXRDS($uri, $xrds_text) + { + $xrds = Auth_Yadis_XRDS::parseXRDS($xrds_text); + + if ($xrds) { + $yadis_services = + $xrds->services(array('filter_MatchesAnyOpenIDType')); + return Auth_OpenID_makeOpenIDEndpoints($uri, $yadis_services); + } + + return null; + } + + /* + * Create endpoints from a DiscoveryResult. + * + * @param discoveryResult Auth_Yadis_DiscoveryResult + * @return array of Auth_OpenID_ServiceEndpoint or null if + * endpoints cannot be created. + */ + static function fromDiscoveryResult($discoveryResult) + { + if ($discoveryResult->isXRDS()) { + return Auth_OpenID_ServiceEndpoint::fromXRDS( + $discoveryResult->normalized_uri, + $discoveryResult->response_text); + } else { + return Auth_OpenID_ServiceEndpoint::fromHTML( + $discoveryResult->normalized_uri, + $discoveryResult->response_text); + } + } + + static function fromHTML($uri, $html) + { + $discovery_types = array( + array(Auth_OpenID_TYPE_2_0, + 'openid2.provider', 'openid2.local_id'), + array(Auth_OpenID_TYPE_1_1, + 'openid.server', 'openid.delegate') + ); + + $services = array(); + + foreach ($discovery_types as $triple) { + list($type_uri, $server_rel, $delegate_rel) = $triple; + + $urls = Auth_OpenID_legacy_discover($html, $server_rel, + $delegate_rel); + + if ($urls === false) { + continue; + } + + list($delegate_url, $server_url) = $urls; + + $service = new Auth_OpenID_ServiceEndpoint(); + $service->claimed_id = $uri; + $service->local_id = $delegate_url; + $service->server_url = $server_url; + $service->type_uris = array($type_uri); + + $services[] = $service; + } + + return $services; + } + + function copy() + { + $x = new Auth_OpenID_ServiceEndpoint(); + + $x->claimed_id = $this->claimed_id; + $x->server_url = $this->server_url; + $x->type_uris = $this->type_uris; + $x->local_id = $this->local_id; + $x->canonicalID = $this->canonicalID; + $x->used_yadis = $this->used_yadis; + + return $x; + } +} + +function Auth_OpenID_findOPLocalIdentifier($service, $type_uris) +{ + // Extract a openid:Delegate value from a Yadis Service element. + // If no delegate is found, returns null. Returns false on + // discovery failure (when multiple delegate/localID tags have + // different values). + + $service->parser->registerNamespace('openid', + Auth_OpenID_XMLNS_1_0); + + $service->parser->registerNamespace('xrd', + Auth_Yadis_XMLNS_XRD_2_0); + + $parser = $service->parser; + + $permitted_tags = array(); + + if (in_array(Auth_OpenID_TYPE_1_1, $type_uris) || + in_array(Auth_OpenID_TYPE_1_0, $type_uris)) { + $permitted_tags[] = 'openid:Delegate'; + } + + if (in_array(Auth_OpenID_TYPE_2_0, $type_uris)) { + $permitted_tags[] = 'xrd:LocalID'; + } + + $local_id = null; + + foreach ($permitted_tags as $tag_name) { + $tags = $service->getElements($tag_name); + + foreach ($tags as $tag) { + $content = $parser->content($tag); + + if ($local_id === null) { + $local_id = $content; + } else if ($local_id != $content) { + return false; + } + } + } + + return $local_id; +} + +function filter_MatchesAnyOpenIDType($service) +{ + $uris = $service->getTypes(); + + foreach ($uris as $uri) { + if (in_array($uri, Auth_OpenID_getOpenIDTypeURIs())) { + return true; + } + } + + return false; +} + +function filter_MatchesAnyOpenIDConsumerType(&$service) +{ + $uris = $service->getTypes(); + + foreach ($uris as $uri) { + if (in_array($uri, Auth_OpenID_getOpenIDConsumerTypeURIs())) { + return true; + } + } + + return false; +} + +function Auth_OpenID_bestMatchingService($service, $preferred_types) +{ + // Return the index of the first matching type, or something + // higher if no type matches. + // + // This provides an ordering in which service elements that + // contain a type that comes earlier in the preferred types list + // come before service elements that come later. If a service + // element has more than one type, the most preferred one wins. + + foreach ($preferred_types as $index => $typ) { + if (in_array($typ, $service->type_uris)) { + return $index; + } + } + + return count($preferred_types); +} + +function Auth_OpenID_arrangeByType($service_list, $preferred_types) +{ + // Rearrange service_list in a new list so services are ordered by + // types listed in preferred_types. Return the new list. + + // Build a list with the service elements in tuples whose + // comparison will prefer the one with the best matching service + $prio_services = array(); + foreach ($service_list as $index => $service) { + $prio_services[] = array(Auth_OpenID_bestMatchingService($service, + $preferred_types), + $index, $service); + } + + sort($prio_services); + + // Now that the services are sorted by priority, remove the sort + // keys from the list. + foreach ($prio_services as $index => $s) { + $prio_services[$index] = $prio_services[$index][2]; + } + + return $prio_services; +} + +// Extract OP Identifier services. If none found, return the rest, +// sorted with most preferred first according to +// OpenIDServiceEndpoint.openid_type_uris. +// +// openid_services is a list of OpenIDServiceEndpoint objects. +// +// Returns a list of OpenIDServiceEndpoint objects.""" +function Auth_OpenID_getOPOrUserServices($openid_services) +{ + $op_services = Auth_OpenID_arrangeByType($openid_services, + array(Auth_OpenID_TYPE_2_0_IDP)); + + $openid_services = Auth_OpenID_arrangeByType($openid_services, + Auth_OpenID_getOpenIDTypeURIs()); + + if ($op_services) { + return $op_services; + } else { + return $openid_services; + } +} + +function Auth_OpenID_makeOpenIDEndpoints($uri, $yadis_services) +{ + $s = array(); + + if (!$yadis_services) { + return $s; + } + + foreach ($yadis_services as $service) { + $type_uris = $service->getTypes(); + $uris = $service->getURIs(); + + // If any Type URIs match and there is an endpoint URI + // specified, then this is an OpenID endpoint + if ($type_uris && + $uris) { + foreach ($uris as $service_uri) { + $openid_endpoint = new Auth_OpenID_ServiceEndpoint(); + if ($openid_endpoint->parseService($uri, + $service_uri, + $type_uris, + $service)) { + $s[] = $openid_endpoint; + } + } + } + } + + return $s; +} + +function Auth_OpenID_discoverWithYadis($uri, $fetcher, + $endpoint_filter='Auth_OpenID_getOPOrUserServices', + $discover_function=null) +{ + // Discover OpenID services for a URI. Tries Yadis and falls back + // on old-style <link rel='...'> discovery if Yadis fails. + + // Might raise a yadis.discover.DiscoveryFailure if no document + // came back for that URI at all. I don't think falling back to + // OpenID 1.0 discovery on the same URL will help, so don't bother + // to catch it. + if ($discover_function === null) { + $discover_function = array('Auth_Yadis_Yadis', 'discover'); + } + + $openid_services = array(); + + $response = call_user_func_array($discover_function, + array($uri, $fetcher)); + + $yadis_url = $response->normalized_uri; + $yadis_services = array(); + + if ($response->isFailure() && !$response->isXRDS()) { + return array($uri, array()); + } + + $openid_services = Auth_OpenID_ServiceEndpoint::fromXRDS( + $yadis_url, + $response->response_text); + + if (!$openid_services) { + if ($response->isXRDS()) { + return Auth_OpenID_discoverWithoutYadis($uri, + $fetcher); + } + + // Try to parse the response as HTML to get OpenID 1.0/1.1 + // <link rel="..."> + $openid_services = Auth_OpenID_ServiceEndpoint::fromHTML( + $yadis_url, + $response->response_text); + } + + $openid_services = call_user_func_array($endpoint_filter, + array($openid_services)); + + return array($yadis_url, $openid_services); +} + +function Auth_OpenID_discoverURI($uri, $fetcher) +{ + $uri = Auth_OpenID::normalizeUrl($uri); + return Auth_OpenID_discoverWithYadis($uri, $fetcher); +} + +function Auth_OpenID_discoverWithoutYadis($uri, $fetcher) +{ + $http_resp = @$fetcher->get($uri); + + if ($http_resp->status != 200 and $http_resp->status != 206) { + return array($uri, array()); + } + + $identity_url = $http_resp->final_url; + + // Try to parse the response as HTML to get OpenID 1.0/1.1 <link + // rel="..."> + $openid_services = Auth_OpenID_ServiceEndpoint::fromHTML( + $identity_url, + $http_resp->body); + + return array($identity_url, $openid_services); +} + +function Auth_OpenID_discoverXRI($iname, $fetcher) +{ + $resolver = new Auth_Yadis_ProxyResolver($fetcher); + list($canonicalID, $yadis_services) = + $resolver->query($iname, + Auth_OpenID_getOpenIDTypeURIs(), + array('filter_MatchesAnyOpenIDType')); + + $openid_services = Auth_OpenID_makeOpenIDEndpoints($iname, + $yadis_services); + + $openid_services = Auth_OpenID_getOPOrUserServices($openid_services); + + for ($i = 0; $i < count($openid_services); $i++) { + $openid_services[$i]->canonicalID = $canonicalID; + $openid_services[$i]->claimed_id = $canonicalID; + $openid_services[$i]->display_identifier = $iname; + } + + // FIXME: returned xri should probably be in some normal form + return array($iname, $openid_services); +} + +function Auth_OpenID_discover($uri, $fetcher) +{ + // If the fetcher (i.e., PHP) doesn't support SSL, we can't do + // discovery on an HTTPS URL. + if ($fetcher->isHTTPS($uri) && !$fetcher->supportsSSL()) { + return array($uri, array()); + } + + if (Auth_Yadis_identifierScheme($uri) == 'XRI') { + $result = Auth_OpenID_discoverXRI($uri, $fetcher); + } else { + $result = Auth_OpenID_discoverURI($uri, $fetcher); + } + + // If the fetcher doesn't support SSL, we can't interact with + // HTTPS server URLs; remove those endpoints from the list. + if (!$fetcher->supportsSSL()) { + $http_endpoints = array(); + list($new_uri, $endpoints) = $result; + + foreach ($endpoints as $e) { + if (!$fetcher->isHTTPS($e->server_url)) { + $http_endpoints[] = $e; + } + } + + $result = array($new_uri, $http_endpoints); + } + + return $result; +} + + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/DumbStore.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/DumbStore.php new file mode 100644 index 000000000..e8f29ace5 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/DumbStore.php @@ -0,0 +1,99 @@ +<?php + +/** + * This file supplies a dumb store backend for OpenID servers and + * consumers. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +/** + * Import the interface for creating a new store class. + */ +require_once 'Auth/OpenID/Interface.php'; +require_once 'Auth/OpenID/HMAC.php'; + +/** + * This is a store for use in the worst case, when you have no way of + * saving state on the consumer site. Using this store makes the + * consumer vulnerable to replay attacks, as it's unable to use + * nonces. Avoid using this store if it is at all possible. + * + * Most of the methods of this class are implementation details. + * Users of this class need to worry only about the constructor. + * + * @package OpenID + */ +class Auth_OpenID_DumbStore extends Auth_OpenID_OpenIDStore { + + /** + * Creates a new {@link Auth_OpenID_DumbStore} instance. For the security + * of the tokens generated by the library, this class attempts to + * at least have a secure implementation of getAuthKey. + * + * When you create an instance of this class, pass in a secret + * phrase. The phrase is hashed with sha1 to make it the correct + * length and form for an auth key. That allows you to use a long + * string as the secret phrase, which means you can make it very + * difficult to guess. + * + * Each {@link Auth_OpenID_DumbStore} instance that is created for use by + * your consumer site needs to use the same $secret_phrase. + * + * @param string secret_phrase The phrase used to create the auth + * key returned by getAuthKey + */ + function Auth_OpenID_DumbStore($secret_phrase) + { + $this->auth_key = Auth_OpenID_SHA1($secret_phrase); + } + + /** + * This implementation does nothing. + */ + function storeAssociation($server_url, $association) + { + } + + /** + * This implementation always returns null. + */ + function getAssociation($server_url, $handle = null) + { + return null; + } + + /** + * This implementation always returns false. + */ + function removeAssociation($server_url, $handle) + { + return false; + } + + /** + * In a system truly limited to dumb mode, nonces must all be + * accepted. This therefore always returns true, which makes + * replay attacks feasible. + */ + function useNonce($server_url, $timestamp, $salt) + { + return true; + } + + /** + * This method returns the auth key generated by the constructor. + */ + function getAuthKey() + { + return $this->auth_key; + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/Extension.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/Extension.php new file mode 100644 index 000000000..c4e38c038 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/Extension.php @@ -0,0 +1,61 @@ +<?php + +/** + * An interface for OpenID extensions. + * + * @package OpenID + */ + +/** + * Require the Message implementation. + */ +require_once 'Auth/OpenID/Message.php'; + +/** + * A base class for accessing extension request and response data for + * the OpenID 2 protocol. + * + * @package OpenID + */ +class Auth_OpenID_Extension { + /** + * ns_uri: The namespace to which to add the arguments for this + * extension + */ + var $ns_uri = null; + var $ns_alias = null; + + /** + * Get the string arguments that should be added to an OpenID + * message for this extension. + */ + function getExtensionArgs() + { + return null; + } + + /** + * Add the arguments from this extension to the provided message. + * + * Returns the message with the extension arguments added. + */ + function toMessage($message) + { + $implicit = $message->isOpenID1(); + $added = $message->namespaces->addAlias($this->ns_uri, + $this->ns_alias, + $implicit); + + if ($added === null) { + if ($message->namespaces->getAlias($this->ns_uri) != + $this->ns_alias) { + return null; + } + } + + $message->updateArgs($this->ns_uri, + $this->getExtensionArgs()); + return $message; + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/FileStore.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/FileStore.php new file mode 100644 index 000000000..074421a0b --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/FileStore.php @@ -0,0 +1,618 @@ +<?php + +/** + * This file supplies a Memcached store backend for OpenID servers and + * consumers. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +/** + * Require base class for creating a new interface. + */ +require_once 'Auth/OpenID.php'; +require_once 'Auth/OpenID/Interface.php'; +require_once 'Auth/OpenID/HMAC.php'; +require_once 'Auth/OpenID/Nonce.php'; + +/** + * This is a filesystem-based store for OpenID associations and + * nonces. This store should be safe for use in concurrent systems on + * both windows and unix (excluding NFS filesystems). There are a + * couple race conditions in the system, but those failure cases have + * been set up in such a way that the worst-case behavior is someone + * having to try to log in a second time. + * + * Most of the methods of this class are implementation details. + * People wishing to just use this store need only pay attention to + * the constructor. + * + * @package OpenID + */ +class Auth_OpenID_FileStore extends Auth_OpenID_OpenIDStore { + + /** + * Initializes a new {@link Auth_OpenID_FileStore}. This + * initializes the nonce and association directories, which are + * subdirectories of the directory passed in. + * + * @param string $directory This is the directory to put the store + * directories in. + */ + function Auth_OpenID_FileStore($directory) + { + if (!Auth_OpenID::ensureDir($directory)) { + trigger_error('Not a directory and failed to create: ' + . $directory, E_USER_ERROR); + } + $directory = realpath($directory); + + $this->directory = $directory; + $this->active = true; + + $this->nonce_dir = $directory . DIRECTORY_SEPARATOR . 'nonces'; + + $this->association_dir = $directory . DIRECTORY_SEPARATOR . + 'associations'; + + // Temp dir must be on the same filesystem as the assciations + // $directory. + $this->temp_dir = $directory . DIRECTORY_SEPARATOR . 'temp'; + + $this->max_nonce_age = 6 * 60 * 60; // Six hours, in seconds + + if (!$this->_setup()) { + trigger_error('Failed to initialize OpenID file store in ' . + $directory, E_USER_ERROR); + } + } + + function destroy() + { + Auth_OpenID_FileStore::_rmtree($this->directory); + $this->active = false; + } + + /** + * Make sure that the directories in which we store our data + * exist. + * + * @access private + */ + function _setup() + { + return (Auth_OpenID::ensureDir($this->nonce_dir) && + Auth_OpenID::ensureDir($this->association_dir) && + Auth_OpenID::ensureDir($this->temp_dir)); + } + + /** + * Create a temporary file on the same filesystem as + * $this->association_dir. + * + * The temporary directory should not be cleaned if there are any + * processes using the store. If there is no active process using + * the store, it is safe to remove all of the files in the + * temporary directory. + * + * @return array ($fd, $filename) + * @access private + */ + function _mktemp() + { + $name = Auth_OpenID_FileStore::_mkstemp($dir = $this->temp_dir); + $file_obj = @fopen($name, 'wb'); + if ($file_obj !== false) { + return array($file_obj, $name); + } else { + Auth_OpenID_FileStore::_removeIfPresent($name); + } + } + + function cleanupNonces() + { + global $Auth_OpenID_SKEW; + + $nonces = Auth_OpenID_FileStore::_listdir($this->nonce_dir); + $now = time(); + + $removed = 0; + // Check all nonces for expiry + foreach ($nonces as $nonce_fname) { + $base = basename($nonce_fname); + $parts = explode('-', $base, 2); + $timestamp = $parts[0]; + $timestamp = intval($timestamp, 16); + if (abs($timestamp - $now) > $Auth_OpenID_SKEW) { + Auth_OpenID_FileStore::_removeIfPresent($nonce_fname); + $removed += 1; + } + } + return $removed; + } + + /** + * Create a unique filename for a given server url and + * handle. This implementation does not assume anything about the + * format of the handle. The filename that is returned will + * contain the domain name from the server URL for ease of human + * inspection of the data directory. + * + * @return string $filename + */ + function getAssociationFilename($server_url, $handle) + { + if (!$this->active) { + trigger_error("FileStore no longer active", E_USER_ERROR); + return null; + } + + if (strpos($server_url, '://') === false) { + trigger_error(sprintf("Bad server URL: %s", $server_url), + E_USER_WARNING); + return null; + } + + list($proto, $rest) = explode('://', $server_url, 2); + $parts = explode('/', $rest); + $domain = Auth_OpenID_FileStore::_filenameEscape($parts[0]); + $url_hash = Auth_OpenID_FileStore::_safe64($server_url); + if ($handle) { + $handle_hash = Auth_OpenID_FileStore::_safe64($handle); + } else { + $handle_hash = ''; + } + + $filename = sprintf('%s-%s-%s-%s', $proto, $domain, $url_hash, + $handle_hash); + + return $this->association_dir. DIRECTORY_SEPARATOR . $filename; + } + + /** + * Store an association in the association directory. + */ + function storeAssociation($server_url, $association) + { + if (!$this->active) { + trigger_error("FileStore no longer active", E_USER_ERROR); + return false; + } + + $association_s = $association->serialize(); + $filename = $this->getAssociationFilename($server_url, + $association->handle); + list($tmp_file, $tmp) = $this->_mktemp(); + + if (!$tmp_file) { + trigger_error("_mktemp didn't return a valid file descriptor", + E_USER_WARNING); + return false; + } + + fwrite($tmp_file, $association_s); + + fflush($tmp_file); + + fclose($tmp_file); + + if (@rename($tmp, $filename)) { + return true; + } else { + // In case we are running on Windows, try unlinking the + // file in case it exists. + @unlink($filename); + + // Now the target should not exist. Try renaming again, + // giving up if it fails. + if (@rename($tmp, $filename)) { + return true; + } + } + + // If there was an error, don't leave the temporary file + // around. + Auth_OpenID_FileStore::_removeIfPresent($tmp); + return false; + } + + /** + * Retrieve an association. If no handle is specified, return the + * association with the most recent issue time. + * + * @return mixed $association + */ + function getAssociation($server_url, $handle = null) + { + if (!$this->active) { + trigger_error("FileStore no longer active", E_USER_ERROR); + return null; + } + + if ($handle === null) { + $handle = ''; + } + + // The filename with the empty handle is a prefix of all other + // associations for the given server URL. + $filename = $this->getAssociationFilename($server_url, $handle); + + if ($handle) { + return $this->_getAssociation($filename); + } else { + $association_files = + Auth_OpenID_FileStore::_listdir($this->association_dir); + $matching_files = array(); + + // strip off the path to do the comparison + $name = basename($filename); + foreach ($association_files as $association_file) { + $base = basename($association_file); + if (strpos($base, $name) === 0) { + $matching_files[] = $association_file; + } + } + + $matching_associations = array(); + // read the matching files and sort by time issued + foreach ($matching_files as $full_name) { + $association = $this->_getAssociation($full_name); + if ($association !== null) { + $matching_associations[] = array($association->issued, + $association); + } + } + + $issued = array(); + $assocs = array(); + foreach ($matching_associations as $key => $assoc) { + $issued[$key] = $assoc[0]; + $assocs[$key] = $assoc[1]; + } + + array_multisort($issued, SORT_DESC, $assocs, SORT_DESC, + $matching_associations); + + // return the most recently issued one. + if ($matching_associations) { + list($issued, $assoc) = $matching_associations[0]; + return $assoc; + } else { + return null; + } + } + } + + /** + * @access private + */ + function _getAssociation($filename) + { + if (!$this->active) { + trigger_error("FileStore no longer active", E_USER_ERROR); + return null; + } + + $assoc_file = @fopen($filename, 'rb'); + + if ($assoc_file === false) { + return null; + } + + $assoc_s = fread($assoc_file, filesize($filename)); + fclose($assoc_file); + + if (!$assoc_s) { + return null; + } + + $association = + Auth_OpenID_Association::deserialize('Auth_OpenID_Association', + $assoc_s); + + if (!$association) { + Auth_OpenID_FileStore::_removeIfPresent($filename); + return null; + } + + if ($association->getExpiresIn() == 0) { + Auth_OpenID_FileStore::_removeIfPresent($filename); + return null; + } else { + return $association; + } + } + + /** + * Remove an association if it exists. Do nothing if it does not. + * + * @return bool $success + */ + function removeAssociation($server_url, $handle) + { + if (!$this->active) { + trigger_error("FileStore no longer active", E_USER_ERROR); + return null; + } + + $assoc = $this->getAssociation($server_url, $handle); + if ($assoc === null) { + return false; + } else { + $filename = $this->getAssociationFilename($server_url, $handle); + return Auth_OpenID_FileStore::_removeIfPresent($filename); + } + } + + /** + * Return whether this nonce is present. As a side effect, mark it + * as no longer present. + * + * @return bool $present + */ + function useNonce($server_url, $timestamp, $salt) + { + global $Auth_OpenID_SKEW; + + if (!$this->active) { + trigger_error("FileStore no longer active", E_USER_ERROR); + return null; + } + + if ( abs($timestamp - time()) > $Auth_OpenID_SKEW ) { + return false; + } + + if ($server_url) { + list($proto, $rest) = explode('://', $server_url, 2); + } else { + $proto = ''; + $rest = ''; + } + + $parts = explode('/', $rest, 2); + $domain = $this->_filenameEscape($parts[0]); + $url_hash = $this->_safe64($server_url); + $salt_hash = $this->_safe64($salt); + + $filename = sprintf('%08x-%s-%s-%s-%s', $timestamp, $proto, + $domain, $url_hash, $salt_hash); + $filename = $this->nonce_dir . DIRECTORY_SEPARATOR . $filename; + + $result = @fopen($filename, 'x'); + + if ($result === false) { + return false; + } else { + fclose($result); + return true; + } + } + + /** + * Remove expired entries from the database. This is potentially + * expensive, so only run when it is acceptable to take time. + * + * @access private + */ + function _allAssocs() + { + $all_associations = array(); + + $association_filenames = + Auth_OpenID_FileStore::_listdir($this->association_dir); + + foreach ($association_filenames as $association_filename) { + $association_file = fopen($association_filename, 'rb'); + + if ($association_file !== false) { + $assoc_s = fread($association_file, + filesize($association_filename)); + fclose($association_file); + + // Remove expired or corrupted associations + $association = + Auth_OpenID_Association::deserialize( + 'Auth_OpenID_Association', $assoc_s); + + if ($association === null) { + Auth_OpenID_FileStore::_removeIfPresent( + $association_filename); + } else { + if ($association->getExpiresIn() == 0) { + $all_associations[] = array($association_filename, + $association); + } + } + } + } + + return $all_associations; + } + + function clean() + { + if (!$this->active) { + trigger_error("FileStore no longer active", E_USER_ERROR); + return null; + } + + $nonces = Auth_OpenID_FileStore::_listdir($this->nonce_dir); + $now = time(); + + // Check all nonces for expiry + foreach ($nonces as $nonce) { + if (!Auth_OpenID_checkTimestamp($nonce, $now)) { + $filename = $this->nonce_dir . DIRECTORY_SEPARATOR . $nonce; + Auth_OpenID_FileStore::_removeIfPresent($filename); + } + } + + foreach ($this->_allAssocs() as $pair) { + list($assoc_filename, $assoc) = $pair; + if ($assoc->getExpiresIn() == 0) { + Auth_OpenID_FileStore::_removeIfPresent($assoc_filename); + } + } + } + + /** + * @access private + */ + function _rmtree($dir) + { + if ($dir[strlen($dir) - 1] != DIRECTORY_SEPARATOR) { + $dir .= DIRECTORY_SEPARATOR; + } + + if ($handle = opendir($dir)) { + while ($item = readdir($handle)) { + if (!in_array($item, array('.', '..'))) { + if (is_dir($dir . $item)) { + + if (!Auth_OpenID_FileStore::_rmtree($dir . $item)) { + return false; + } + } else if (is_file($dir . $item)) { + if (!unlink($dir . $item)) { + return false; + } + } + } + } + + closedir($handle); + + if (!@rmdir($dir)) { + return false; + } + + return true; + } else { + // Couldn't open directory. + return false; + } + } + + /** + * @access private + */ + function _mkstemp($dir) + { + foreach (range(0, 4) as $i) { + $name = tempnam($dir, "php_openid_filestore_"); + + if ($name !== false) { + return $name; + } + } + return false; + } + + /** + * @access private + */ + static function _mkdtemp($dir) + { + foreach (range(0, 4) as $i) { + $name = $dir . strval(DIRECTORY_SEPARATOR) . strval(getmypid()) . + "-" . strval(rand(1, time())); + if (!mkdir($name, 0700)) { + return false; + } else { + return $name; + } + } + return false; + } + + /** + * @access private + */ + function _listdir($dir) + { + $handle = opendir($dir); + $files = array(); + while (false !== ($filename = readdir($handle))) { + if (!in_array($filename, array('.', '..'))) { + $files[] = $dir . DIRECTORY_SEPARATOR . $filename; + } + } + return $files; + } + + /** + * @access private + */ + function _isFilenameSafe($char) + { + $_Auth_OpenID_filename_allowed = Auth_OpenID_letters . + Auth_OpenID_digits . "."; + return (strpos($_Auth_OpenID_filename_allowed, $char) !== false); + } + + /** + * @access private + */ + function _safe64($str) + { + $h64 = base64_encode(Auth_OpenID_SHA1($str)); + $h64 = str_replace('+', '_', $h64); + $h64 = str_replace('/', '.', $h64); + $h64 = str_replace('=', '', $h64); + return $h64; + } + + /** + * @access private + */ + function _filenameEscape($str) + { + $filename = ""; + $b = Auth_OpenID::toBytes($str); + + for ($i = 0; $i < count($b); $i++) { + $c = $b[$i]; + if (Auth_OpenID_FileStore::_isFilenameSafe($c)) { + $filename .= $c; + } else { + $filename .= sprintf("_%02X", ord($c)); + } + } + return $filename; + } + + /** + * Attempt to remove a file, returning whether the file existed at + * the time of the call. + * + * @access private + * @return bool $result True if the file was present, false if not. + */ + function _removeIfPresent($filename) + { + return @unlink($filename); + } + + function cleanupAssociations() + { + $removed = 0; + foreach ($this->_allAssocs() as $pair) { + list($assoc_filename, $assoc) = $pair; + if ($assoc->getExpiresIn() == 0) { + $this->_removeIfPresent($assoc_filename); + $removed += 1; + } + } + return $removed; + } +} + + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/HMAC.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/HMAC.php new file mode 100644 index 000000000..e6c4bdfd9 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/HMAC.php @@ -0,0 +1,105 @@ +<?php + +/** + * This is the HMACSHA1 implementation for the OpenID library. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @access private + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +require_once 'Auth/OpenID.php'; + +/** + * SHA1_BLOCKSIZE is this module's SHA1 blocksize used by the fallback + * implementation. + */ +define('Auth_OpenID_SHA1_BLOCKSIZE', 64); + +function Auth_OpenID_SHA1($text) +{ + if (function_exists('hash') && + function_exists('hash_algos') && + (in_array('sha1', hash_algos()))) { + // PHP 5 case (sometimes): 'hash' available and 'sha1' algo + // supported. + return hash('sha1', $text, true); + } else if (function_exists('sha1')) { + // PHP 4 case: 'sha1' available. + $hex = sha1($text); + $raw = ''; + for ($i = 0; $i < 40; $i += 2) { + $hexcode = substr($hex, $i, 2); + $charcode = (int)base_convert($hexcode, 16, 10); + $raw .= chr($charcode); + } + return $raw; + } else { + // Explode. + trigger_error('No SHA1 function found', E_USER_ERROR); + } +} + +/** + * Compute an HMAC/SHA1 hash. + * + * @access private + * @param string $key The HMAC key + * @param string $text The message text to hash + * @return string $mac The MAC + */ +function Auth_OpenID_HMACSHA1($key, $text) +{ + if (Auth_OpenID::bytes($key) > Auth_OpenID_SHA1_BLOCKSIZE) { + $key = Auth_OpenID_SHA1($key, true); + } + + if (function_exists('hash_hmac') && + function_exists('hash_algos') && + (in_array('sha1', hash_algos()))) { + return hash_hmac('sha1', $text, $key, true); + } + // Home-made solution + + $key = str_pad($key, Auth_OpenID_SHA1_BLOCKSIZE, chr(0x00)); + $ipad = str_repeat(chr(0x36), Auth_OpenID_SHA1_BLOCKSIZE); + $opad = str_repeat(chr(0x5c), Auth_OpenID_SHA1_BLOCKSIZE); + $hash1 = Auth_OpenID_SHA1(($key ^ $ipad) . $text, true); + $hmac = Auth_OpenID_SHA1(($key ^ $opad) . $hash1, true); + return $hmac; +} + +if (function_exists('hash') && + function_exists('hash_algos') && + (in_array('sha256', hash_algos()))) { + function Auth_OpenID_SHA256($text) + { + // PHP 5 case: 'hash' available and 'sha256' algo supported. + return hash('sha256', $text, true); + } + define('Auth_OpenID_SHA256_SUPPORTED', true); +} else { + define('Auth_OpenID_SHA256_SUPPORTED', false); +} + +if (function_exists('hash_hmac') && + function_exists('hash_algos') && + (in_array('sha256', hash_algos()))) { + + function Auth_OpenID_HMACSHA256($key, $text) + { + // Return raw MAC (not hex string). + return hash_hmac('sha256', $text, $key, true); + } + + define('Auth_OpenID_HMACSHA256_SUPPORTED', true); +} else { + define('Auth_OpenID_HMACSHA256_SUPPORTED', false); +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/Interface.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/Interface.php new file mode 100644 index 000000000..eca6b9c50 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/Interface.php @@ -0,0 +1,196 @@ +<?php + +/** + * This file specifies the interface for PHP OpenID store implementations. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +/** + * This is the interface for the store objects the OpenID library + * uses. It is a single class that provides all of the persistence + * mechanisms that the OpenID library needs, for both servers and + * consumers. If you want to create an SQL-driven store, please see + * then {@link Auth_OpenID_SQLStore} class. + * + * Change: Version 2.0 removed the storeNonce, getAuthKey, and isDumb + * methods, and changed the behavior of the useNonce method to support + * one-way nonces. + * + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + */ +class Auth_OpenID_OpenIDStore { + /** + * This method puts an Association object into storage, + * retrievable by server URL and handle. + * + * @param string $server_url The URL of the identity server that + * this association is with. Because of the way the server portion + * of the library uses this interface, don't assume there are any + * limitations on the character set of the input string. In + * particular, expect to see unescaped non-url-safe characters in + * the server_url field. + * + * @param Association $association The Association to store. + */ + function storeAssociation($server_url, $association) + { + trigger_error("Auth_OpenID_OpenIDStore::storeAssociation ". + "not implemented", E_USER_ERROR); + } + + /* + * Remove expired nonces from the store. + * + * Discards any nonce from storage that is old enough that its + * timestamp would not pass useNonce(). + * + * This method is not called in the normal operation of the + * library. It provides a way for store admins to keep their + * storage from filling up with expired data. + * + * @return the number of nonces expired + */ + function cleanupNonces() + { + trigger_error("Auth_OpenID_OpenIDStore::cleanupNonces ". + "not implemented", E_USER_ERROR); + } + + /* + * Remove expired associations from the store. + * + * This method is not called in the normal operation of the + * library. It provides a way for store admins to keep their + * storage from filling up with expired data. + * + * @return the number of associations expired. + */ + function cleanupAssociations() + { + trigger_error("Auth_OpenID_OpenIDStore::cleanupAssociations ". + "not implemented", E_USER_ERROR); + } + + /* + * Shortcut for cleanupNonces(), cleanupAssociations(). + * + * This method is not called in the normal operation of the + * library. It provides a way for store admins to keep their + * storage from filling up with expired data. + */ + function cleanup() + { + return array($this->cleanupNonces(), + $this->cleanupAssociations()); + } + + /** + * Report whether this storage supports cleanup + */ + function supportsCleanup() + { + return true; + } + + /** + * This method returns an Association object from storage that + * matches the server URL and, if specified, handle. It returns + * null if no such association is found or if the matching + * association is expired. + * + * If no handle is specified, the store may return any association + * which matches the server URL. If multiple associations are + * valid, the recommended return value for this method is the one + * most recently issued. + * + * This method is allowed (and encouraged) to garbage collect + * expired associations when found. This method must not return + * expired associations. + * + * @param string $server_url The URL of the identity server to get + * the association for. Because of the way the server portion of + * the library uses this interface, don't assume there are any + * limitations on the character set of the input string. In + * particular, expect to see unescaped non-url-safe characters in + * the server_url field. + * + * @param mixed $handle This optional parameter is the handle of + * the specific association to get. If no specific handle is + * provided, any valid association matching the server URL is + * returned. + * + * @return Association The Association for the given identity + * server. + */ + function getAssociation($server_url, $handle = null) + { + trigger_error("Auth_OpenID_OpenIDStore::getAssociation ". + "not implemented", E_USER_ERROR); + } + + /** + * This method removes the matching association if it's found, and + * returns whether the association was removed or not. + * + * @param string $server_url The URL of the identity server the + * association to remove belongs to. Because of the way the server + * portion of the library uses this interface, don't assume there + * are any limitations on the character set of the input + * string. In particular, expect to see unescaped non-url-safe + * characters in the server_url field. + * + * @param string $handle This is the handle of the association to + * remove. If there isn't an association found that matches both + * the given URL and handle, then there was no matching handle + * found. + * + * @return mixed Returns whether or not the given association existed. + */ + function removeAssociation($server_url, $handle) + { + trigger_error("Auth_OpenID_OpenIDStore::removeAssociation ". + "not implemented", E_USER_ERROR); + } + + /** + * Called when using a nonce. + * + * This method should return C{True} if the nonce has not been + * used before, and store it for a while to make sure nobody + * tries to use the same value again. If the nonce has already + * been used, return C{False}. + * + * Change: In earlier versions, round-trip nonces were used and a + * nonce was only valid if it had been previously stored with + * storeNonce. Version 2.0 uses one-way nonces, requiring a + * different implementation here that does not depend on a + * storeNonce call. (storeNonce is no longer part of the + * interface. + * + * @param string $nonce The nonce to use. + * + * @return bool Whether or not the nonce was valid. + */ + function useNonce($server_url, $timestamp, $salt) + { + trigger_error("Auth_OpenID_OpenIDStore::useNonce ". + "not implemented", E_USER_ERROR); + } + + /** + * Removes all entries from the store; implementation is optional. + */ + function reset() + { + } + +} diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/KVForm.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/KVForm.php new file mode 100644 index 000000000..dd02661d8 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/KVForm.php @@ -0,0 +1,111 @@ +<?php + +/** + * OpenID protocol key-value/comma-newline format parsing and + * serialization + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @access private + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +/** + * Container for key-value/comma-newline OpenID format and parsing + */ +class Auth_OpenID_KVForm { + /** + * Convert an OpenID colon/newline separated string into an + * associative array + * + * @static + * @access private + */ + static function toArray($kvs, $strict=false) + { + $lines = explode("\n", $kvs); + + $last = array_pop($lines); + if ($last !== '') { + array_push($lines, $last); + if ($strict) { + return false; + } + } + + $values = array(); + + for ($lineno = 0; $lineno < count($lines); $lineno++) { + $line = $lines[$lineno]; + $kv = explode(':', $line, 2); + if (count($kv) != 2) { + if ($strict) { + return false; + } + continue; + } + + $key = $kv[0]; + $tkey = trim($key); + if ($tkey != $key) { + if ($strict) { + return false; + } + } + + $value = $kv[1]; + $tval = trim($value); + if ($tval != $value) { + if ($strict) { + return false; + } + } + + $values[$tkey] = $tval; + } + + return $values; + } + + /** + * Convert an array into an OpenID colon/newline separated string + * + * @static + * @access private + */ + static function fromArray($values) + { + if ($values === null) { + return null; + } + + ksort($values); + + $serialized = ''; + foreach ($values as $key => $value) { + if (is_array($value)) { + list($key, $value) = array($value[0], $value[1]); + } + + if (strpos($key, ':') !== false) { + return null; + } + + if (strpos($key, "\n") !== false) { + return null; + } + + if (strpos($value, "\n") !== false) { + return null; + } + $serialized .= "$key:$value\n"; + } + return $serialized; + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/MDB2Store.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/MDB2Store.php new file mode 100644 index 000000000..80024bada --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/MDB2Store.php @@ -0,0 +1,413 @@ +<?php + +/** + * SQL-backed OpenID stores for use with PEAR::MDB2. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005 Janrain, Inc. + * @license http://www.gnu.org/copyleft/lesser.html LGPL + */ + +require_once 'MDB2.php'; + +/** + * @access private + */ +require_once 'Auth/OpenID/Interface.php'; + +/** + * @access private + */ +require_once 'Auth/OpenID.php'; + +/** + * @access private + */ +require_once 'Auth/OpenID/Nonce.php'; + +/** + * This store uses a PEAR::MDB2 connection to store persistence + * information. + * + * The table names used are determined by the class variables + * associations_table_name and nonces_table_name. To change the name + * of the tables used, pass new table names into the constructor. + * + * To create the tables with the proper schema, see the createTables + * method. + * + * @package OpenID + */ +class Auth_OpenID_MDB2Store extends Auth_OpenID_OpenIDStore { + /** + * This creates a new MDB2Store instance. It requires an + * established database connection be given to it, and it allows + * overriding the default table names. + * + * @param connection $connection This must be an established + * connection to a database of the correct type for the SQLStore + * subclass you're using. This must be a PEAR::MDB2 connection + * handle. + * + * @param associations_table: This is an optional parameter to + * specify the name of the table used for storing associations. + * The default value is 'oid_associations'. + * + * @param nonces_table: This is an optional parameter to specify + * the name of the table used for storing nonces. The default + * value is 'oid_nonces'. + */ + function Auth_OpenID_MDB2Store($connection, + $associations_table = null, + $nonces_table = null) + { + $this->associations_table_name = "oid_associations"; + $this->nonces_table_name = "oid_nonces"; + + // Check the connection object type to be sure it's a PEAR + // database connection. + if (!is_object($connection) || + !is_subclass_of($connection, 'mdb2_driver_common')) { + trigger_error("Auth_OpenID_MDB2Store expected PEAR connection " . + "object (got ".get_class($connection).")", + E_USER_ERROR); + return; + } + + $this->connection = $connection; + + // Be sure to set the fetch mode so the results are keyed on + // column name instead of column index. + $this->connection->setFetchMode(MDB2_FETCHMODE_ASSOC); + + if (PEAR::isError($this->connection->loadModule('Extended'))) { + trigger_error("Unable to load MDB2_Extended module", E_USER_ERROR); + return; + } + + if ($associations_table) { + $this->associations_table_name = $associations_table; + } + + if ($nonces_table) { + $this->nonces_table_name = $nonces_table; + } + + $this->max_nonce_age = 6 * 60 * 60; + } + + function tableExists($table_name) + { + return !PEAR::isError($this->connection->query( + sprintf("SELECT * FROM %s LIMIT 0", + $table_name))); + } + + function createTables() + { + $n = $this->create_nonce_table(); + $a = $this->create_assoc_table(); + + if (!$n || !$a) { + return false; + } + return true; + } + + function create_nonce_table() + { + if (!$this->tableExists($this->nonces_table_name)) { + switch ($this->connection->phptype) { + case "mysql": + case "mysqli": + // Custom SQL for MySQL to use InnoDB and variable- + // length keys + $r = $this->connection->exec( + sprintf("CREATE TABLE %s (\n". + " server_url VARCHAR(2047) NOT NULL DEFAULT '',\n". + " timestamp INTEGER NOT NULL,\n". + " salt CHAR(40) NOT NULL,\n". + " UNIQUE (server_url(255), timestamp, salt)\n". + ") TYPE=InnoDB", + $this->nonces_table_name)); + if (PEAR::isError($r)) { + return false; + } + break; + default: + if (PEAR::isError( + $this->connection->loadModule('Manager'))) { + return false; + } + $fields = array( + "server_url" => array( + "type" => "text", + "length" => 2047, + "notnull" => true + ), + "timestamp" => array( + "type" => "integer", + "notnull" => true + ), + "salt" => array( + "type" => "text", + "length" => 40, + "fixed" => true, + "notnull" => true + ) + ); + $constraint = array( + "unique" => 1, + "fields" => array( + "server_url" => true, + "timestamp" => true, + "salt" => true + ) + ); + + $r = $this->connection->createTable($this->nonces_table_name, + $fields); + if (PEAR::isError($r)) { + return false; + } + + $r = $this->connection->createConstraint( + $this->nonces_table_name, + $this->nonces_table_name . "_constraint", + $constraint); + if (PEAR::isError($r)) { + return false; + } + break; + } + } + return true; + } + + function create_assoc_table() + { + if (!$this->tableExists($this->associations_table_name)) { + switch ($this->connection->phptype) { + case "mysql": + case "mysqli": + // Custom SQL for MySQL to use InnoDB and variable- + // length keys + $r = $this->connection->exec( + sprintf("CREATE TABLE %s(\n". + " server_url VARCHAR(2047) NOT NULL DEFAULT '',\n". + " handle VARCHAR(255) NOT NULL,\n". + " secret BLOB NOT NULL,\n". + " issued INTEGER NOT NULL,\n". + " lifetime INTEGER NOT NULL,\n". + " assoc_type VARCHAR(64) NOT NULL,\n". + " PRIMARY KEY (server_url(255), handle)\n". + ") TYPE=InnoDB", + $this->associations_table_name)); + if (PEAR::isError($r)) { + return false; + } + break; + default: + if (PEAR::isError( + $this->connection->loadModule('Manager'))) { + return false; + } + $fields = array( + "server_url" => array( + "type" => "text", + "length" => 2047, + "notnull" => true + ), + "handle" => array( + "type" => "text", + "length" => 255, + "notnull" => true + ), + "secret" => array( + "type" => "blob", + "length" => "255", + "notnull" => true + ), + "issued" => array( + "type" => "integer", + "notnull" => true + ), + "lifetime" => array( + "type" => "integer", + "notnull" => true + ), + "assoc_type" => array( + "type" => "text", + "length" => 64, + "notnull" => true + ) + ); + $options = array( + "primary" => array( + "server_url" => true, + "handle" => true + ) + ); + + $r = $this->connection->createTable( + $this->associations_table_name, + $fields, + $options); + if (PEAR::isError($r)) { + return false; + } + break; + } + } + return true; + } + + function storeAssociation($server_url, $association) + { + $fields = array( + "server_url" => array( + "value" => $server_url, + "key" => true + ), + "handle" => array( + "value" => $association->handle, + "key" => true + ), + "secret" => array( + "value" => $association->secret, + "type" => "blob" + ), + "issued" => array( + "value" => $association->issued + ), + "lifetime" => array( + "value" => $association->lifetime + ), + "assoc_type" => array( + "value" => $association->assoc_type + ) + ); + + return !PEAR::isError($this->connection->replace( + $this->associations_table_name, + $fields)); + } + + function cleanupNonces() + { + global $Auth_OpenID_SKEW; + $v = time() - $Auth_OpenID_SKEW; + + return $this->connection->exec( + sprintf("DELETE FROM %s WHERE timestamp < %d", + $this->nonces_table_name, $v)); + } + + function cleanupAssociations() + { + return $this->connection->exec( + sprintf("DELETE FROM %s WHERE issued + lifetime < %d", + $this->associations_table_name, time())); + } + + function getAssociation($server_url, $handle = null) + { + $sql = ""; + $params = null; + $types = array( + "text", + "blob", + "integer", + "integer", + "text" + ); + if ($handle !== null) { + $sql = sprintf("SELECT handle, secret, issued, lifetime, assoc_type " . + "FROM %s WHERE server_url = ? AND handle = ?", + $this->associations_table_name); + $params = array($server_url, $handle); + } else { + $sql = sprintf("SELECT handle, secret, issued, lifetime, assoc_type " . + "FROM %s WHERE server_url = ? ORDER BY issued DESC", + $this->associations_table_name); + $params = array($server_url); + } + + $assoc = $this->connection->getRow($sql, $types, $params); + + if (!$assoc || PEAR::isError($assoc)) { + return null; + } else { + $association = new Auth_OpenID_Association($assoc['handle'], + stream_get_contents( + $assoc['secret']), + $assoc['issued'], + $assoc['lifetime'], + $assoc['assoc_type']); + fclose($assoc['secret']); + return $association; + } + } + + function removeAssociation($server_url, $handle) + { + $r = $this->connection->execParam( + sprintf("DELETE FROM %s WHERE server_url = ? AND handle = ?", + $this->associations_table_name), + array($server_url, $handle)); + + if (PEAR::isError($r) || $r == 0) { + return false; + } + return true; + } + + function useNonce($server_url, $timestamp, $salt) + { + global $Auth_OpenID_SKEW; + + if (abs($timestamp - time()) > $Auth_OpenID_SKEW ) { + return false; + } + + $fields = array( + "timestamp" => $timestamp, + "salt" => $salt + ); + + if (!empty($server_url)) { + $fields["server_url"] = $server_url; + } + + $r = $this->connection->autoExecute( + $this->nonces_table_name, + $fields, + MDB2_AUTOQUERY_INSERT); + + if (PEAR::isError($r)) { + return false; + } + return true; + } + + /** + * Resets the store by removing all records from the store's + * tables. + */ + function reset() + { + $this->connection->query(sprintf("DELETE FROM %s", + $this->associations_table_name)); + + $this->connection->query(sprintf("DELETE FROM %s", + $this->nonces_table_name)); + } + +} + +?> diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/MemcachedStore.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/MemcachedStore.php new file mode 100644 index 000000000..fc10800b1 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/MemcachedStore.php @@ -0,0 +1,207 @@ +<?php + +/** + * This file supplies a memcached store backend for OpenID servers and + * consumers. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @package OpenID + * @author Artemy Tregubenko <me@arty.name> + * @copyright 2008 JanRain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + * Contributed by Open Web Technologies <http://openwebtech.ru/> + */ + +/** + * Import the interface for creating a new store class. + */ +require_once 'Auth/OpenID/Interface.php'; + +/** + * This is a memcached-based store for OpenID associations and + * nonces. + * + * As memcache has limit of 250 chars for key length, + * server_url, handle and salt are hashed with sha1(). + * + * Most of the methods of this class are implementation details. + * People wishing to just use this store need only pay attention to + * the constructor. + * + * @package OpenID + */ +class Auth_OpenID_MemcachedStore extends Auth_OpenID_OpenIDStore { + + /** + * Initializes a new {@link Auth_OpenID_MemcachedStore} instance. + * Just saves memcached object as property. + * + * @param resource connection Memcache connection resourse + */ + function Auth_OpenID_MemcachedStore($connection, $compress = false) + { + $this->connection = $connection; + $this->compress = $compress ? MEMCACHE_COMPRESSED : 0; + } + + /** + * Store association until its expiration time in memcached. + * Overwrites any existing association with same server_url and + * handle. Handles list of associations for every server. + */ + function storeAssociation($server_url, $association) + { + // create memcached keys for association itself + // and list of associations for this server + $associationKey = $this->associationKey($server_url, + $association->handle); + $serverKey = $this->associationServerKey($server_url); + + // get list of associations + $serverAssociations = $this->connection->get($serverKey); + + // if no such list, initialize it with empty array + if (!$serverAssociations) { + $serverAssociations = array(); + } + // and store given association key in it + $serverAssociations[$association->issued] = $associationKey; + + // save associations' keys list + $this->connection->set( + $serverKey, + $serverAssociations, + $this->compress + ); + // save association itself + $this->connection->set( + $associationKey, + $association, + $this->compress, + $association->issued + $association->lifetime); + } + + /** + * Read association from memcached. If no handle given + * and multiple associations found, returns latest issued + */ + function getAssociation($server_url, $handle = null) + { + // simple case: handle given + if ($handle !== null) { + // get association, return null if failed + $association = $this->connection->get( + $this->associationKey($server_url, $handle)); + return $association ? $association : null; + } + + // no handle given, working with list + // create key for list of associations + $serverKey = $this->associationServerKey($server_url); + + // get list of associations + $serverAssociations = $this->connection->get($serverKey); + // return null if failed or got empty list + if (!$serverAssociations) { + return null; + } + + // get key of most recently issued association + $keys = array_keys($serverAssociations); + sort($keys); + $lastKey = $serverAssociations[array_pop($keys)]; + + // get association, return null if failed + $association = $this->connection->get($lastKey); + return $association ? $association : null; + } + + /** + * Immediately delete association from memcache. + */ + function removeAssociation($server_url, $handle) + { + // create memcached keys for association itself + // and list of associations for this server + $serverKey = $this->associationServerKey($server_url); + $associationKey = $this->associationKey($server_url, + $handle); + + // get list of associations + $serverAssociations = $this->connection->get($serverKey); + // return null if failed or got empty list + if (!$serverAssociations) { + return false; + } + + // ensure that given association key exists in list + $serverAssociations = array_flip($serverAssociations); + if (!array_key_exists($associationKey, $serverAssociations)) { + return false; + } + + // remove given association key from list + unset($serverAssociations[$associationKey]); + $serverAssociations = array_flip($serverAssociations); + + // save updated list + $this->connection->set( + $serverKey, + $serverAssociations, + $this->compress + ); + + // delete association + return $this->connection->delete($associationKey); + } + + /** + * Create nonce for server and salt, expiring after + * $Auth_OpenID_SKEW seconds. + */ + function useNonce($server_url, $timestamp, $salt) + { + global $Auth_OpenID_SKEW; + + // save one request to memcache when nonce obviously expired + if (abs($timestamp - time()) > $Auth_OpenID_SKEW) { + return false; + } + + // returns false when nonce already exists + // otherwise adds nonce + return $this->connection->add( + 'openid_nonce_' . sha1($server_url) . '_' . sha1($salt), + 1, // any value here + $this->compress, + $Auth_OpenID_SKEW); + } + + /** + * Memcache key is prefixed with 'openid_association_' string. + */ + function associationKey($server_url, $handle = null) + { + return 'openid_association_' . sha1($server_url) . '_' . sha1($handle); + } + + /** + * Memcache key is prefixed with 'openid_association_' string. + */ + function associationServerKey($server_url) + { + return 'openid_association_server_' . sha1($server_url); + } + + /** + * Report that this storage doesn't support cleanup + */ + function supportsCleanup() + { + return false; + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/Message.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/Message.php new file mode 100644 index 000000000..9a5b20d0a --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/Message.php @@ -0,0 +1,920 @@ +<?php + +/** + * Extension argument processing code + * + * @package OpenID + */ + +/** + * Import tools needed to deal with messages. + */ +require_once 'Auth/OpenID.php'; +require_once 'Auth/OpenID/KVForm.php'; +require_once 'Auth/Yadis/XML.php'; +require_once 'Auth/OpenID/Consumer.php'; // For Auth_OpenID_FailureResponse + +// This doesn't REALLY belong here, but where is better? +define('Auth_OpenID_IDENTIFIER_SELECT', + "http://specs.openid.net/auth/2.0/identifier_select"); + +// URI for Simple Registration extension, the only commonly deployed +// OpenID 1.x extension, and so a special case +define('Auth_OpenID_SREG_URI', 'http://openid.net/sreg/1.0'); + +// The OpenID 1.X namespace URI +define('Auth_OpenID_OPENID1_NS', 'http://openid.net/signon/1.0'); +define('Auth_OpenID_THE_OTHER_OPENID1_NS', 'http://openid.net/signon/1.1'); + +function Auth_OpenID_isOpenID1($ns) +{ + return ($ns == Auth_OpenID_THE_OTHER_OPENID1_NS) || + ($ns == Auth_OpenID_OPENID1_NS); +} + +// The OpenID 2.0 namespace URI +define('Auth_OpenID_OPENID2_NS', 'http://specs.openid.net/auth/2.0'); + +// The namespace consisting of pairs with keys that are prefixed with +// "openid." but not in another namespace. +define('Auth_OpenID_NULL_NAMESPACE', 'Null namespace'); + +// The null namespace, when it is an allowed OpenID namespace +define('Auth_OpenID_OPENID_NS', 'OpenID namespace'); + +// The top-level namespace, excluding all pairs with keys that start +// with "openid." +define('Auth_OpenID_BARE_NS', 'Bare namespace'); + +// Sentinel for Message implementation to indicate that getArg should +// return null instead of returning a default. +define('Auth_OpenID_NO_DEFAULT', 'NO DEFAULT ALLOWED'); + +// Limit, in bytes, of identity provider and return_to URLs, including +// response payload. See OpenID 1.1 specification, Appendix D. +define('Auth_OpenID_OPENID1_URL_LIMIT', 2047); + +// All OpenID protocol fields. Used to check namespace aliases. +global $Auth_OpenID_OPENID_PROTOCOL_FIELDS; +$Auth_OpenID_OPENID_PROTOCOL_FIELDS = array( + 'ns', 'mode', 'error', 'return_to', 'contact', 'reference', + 'signed', 'assoc_type', 'session_type', 'dh_modulus', 'dh_gen', + 'dh_consumer_public', 'claimed_id', 'identity', 'realm', + 'invalidate_handle', 'op_endpoint', 'response_nonce', 'sig', + 'assoc_handle', 'trust_root', 'openid'); + +// Global namespace / alias registration map. See +// Auth_OpenID_registerNamespaceAlias. +global $Auth_OpenID_registered_aliases; +$Auth_OpenID_registered_aliases = array(); + +/** + * Registers a (namespace URI, alias) mapping in a global namespace + * alias map. Raises NamespaceAliasRegistrationError if either the + * namespace URI or alias has already been registered with a different + * value. This function is required if you want to use a namespace + * with an OpenID 1 message. + */ +function Auth_OpenID_registerNamespaceAlias($namespace_uri, $alias) +{ + global $Auth_OpenID_registered_aliases; + + if (Auth_OpenID::arrayGet($Auth_OpenID_registered_aliases, + $alias) == $namespace_uri) { + return true; + } + + if (in_array($namespace_uri, + array_values($Auth_OpenID_registered_aliases))) { + return false; + } + + if (in_array($alias, array_keys($Auth_OpenID_registered_aliases))) { + return false; + } + + $Auth_OpenID_registered_aliases[$alias] = $namespace_uri; + return true; +} + +/** + * Removes a (namespace_uri, alias) registration from the global + * namespace alias map. Returns true if the removal succeeded; false + * if not (if the mapping did not exist). + */ +function Auth_OpenID_removeNamespaceAlias($namespace_uri, $alias) +{ + global $Auth_OpenID_registered_aliases; + + if (Auth_OpenID::arrayGet($Auth_OpenID_registered_aliases, + $alias) === $namespace_uri) { + unset($Auth_OpenID_registered_aliases[$alias]); + return true; + } + + return false; +} + +/** + * An Auth_OpenID_Mapping maintains a mapping from arbitrary keys to + * arbitrary values. (This is unlike an ordinary PHP array, whose + * keys may be only simple scalars.) + * + * @package OpenID + */ +class Auth_OpenID_Mapping { + /** + * Initialize a mapping. If $classic_array is specified, its keys + * and values are used to populate the mapping. + */ + function Auth_OpenID_Mapping($classic_array = null) + { + $this->keys = array(); + $this->values = array(); + + if (is_array($classic_array)) { + foreach ($classic_array as $key => $value) { + $this->set($key, $value); + } + } + } + + /** + * Returns true if $thing is an Auth_OpenID_Mapping object; false + * if not. + */ + static function isA($thing) + { + return (is_object($thing) && + strtolower(get_class($thing)) == 'auth_openid_mapping'); + } + + /** + * Returns an array of the keys in the mapping. + */ + function keys() + { + return $this->keys; + } + + /** + * Returns an array of values in the mapping. + */ + function values() + { + return $this->values; + } + + /** + * Returns an array of (key, value) pairs in the mapping. + */ + function items() + { + $temp = array(); + + for ($i = 0; $i < count($this->keys); $i++) { + $temp[] = array($this->keys[$i], + $this->values[$i]); + } + return $temp; + } + + /** + * Returns the "length" of the mapping, or the number of keys. + */ + function len() + { + return count($this->keys); + } + + /** + * Sets a key-value pair in the mapping. If the key already + * exists, its value is replaced with the new value. + */ + function set($key, $value) + { + $index = array_search($key, $this->keys); + + if ($index !== false) { + $this->values[$index] = $value; + } else { + $this->keys[] = $key; + $this->values[] = $value; + } + } + + /** + * Gets a specified value from the mapping, associated with the + * specified key. If the key does not exist in the mapping, + * $default is returned instead. + */ + function get($key, $default = null) + { + $index = array_search($key, $this->keys); + + if ($index !== false) { + return $this->values[$index]; + } else { + return $default; + } + } + + /** + * @access private + */ + function _reflow() + { + // PHP is broken yet again. Sort the arrays to remove the + // hole in the numeric indexes that make up the array. + $old_keys = $this->keys; + $old_values = $this->values; + + $this->keys = array(); + $this->values = array(); + + foreach ($old_keys as $k) { + $this->keys[] = $k; + } + + foreach ($old_values as $v) { + $this->values[] = $v; + } + } + + /** + * Deletes a key-value pair from the mapping with the specified + * key. + */ + function del($key) + { + $index = array_search($key, $this->keys); + + if ($index !== false) { + unset($this->keys[$index]); + unset($this->values[$index]); + $this->_reflow(); + return true; + } + return false; + } + + /** + * Returns true if the specified value has a key in the mapping; + * false if not. + */ + function contains($value) + { + return (array_search($value, $this->keys) !== false); + } +} + +/** + * Maintains a bijective map between namespace uris and aliases. + * + * @package OpenID + */ +class Auth_OpenID_NamespaceMap { + function Auth_OpenID_NamespaceMap() + { + $this->alias_to_namespace = new Auth_OpenID_Mapping(); + $this->namespace_to_alias = new Auth_OpenID_Mapping(); + $this->implicit_namespaces = array(); + } + + function getAlias($namespace_uri) + { + return $this->namespace_to_alias->get($namespace_uri); + } + + function getNamespaceURI($alias) + { + return $this->alias_to_namespace->get($alias); + } + + function iterNamespaceURIs() + { + // Return an iterator over the namespace URIs + return $this->namespace_to_alias->keys(); + } + + function iterAliases() + { + // Return an iterator over the aliases""" + return $this->alias_to_namespace->keys(); + } + + function iteritems() + { + return $this->namespace_to_alias->items(); + } + + function isImplicit($namespace_uri) + { + return in_array($namespace_uri, $this->implicit_namespaces); + } + + function addAlias($namespace_uri, $desired_alias, $implicit=false) + { + // Add an alias from this namespace URI to the desired alias + global $Auth_OpenID_OPENID_PROTOCOL_FIELDS; + + // Check that desired_alias is not an openid protocol field as + // per the spec. + if (in_array($desired_alias, $Auth_OpenID_OPENID_PROTOCOL_FIELDS)) { + Auth_OpenID::log("\"%s\" is not an allowed namespace alias", + $desired_alias); + return null; + } + + // Check that desired_alias does not contain a period as per + // the spec. + if (strpos($desired_alias, '.') !== false) { + Auth_OpenID::log('"%s" must not contain a dot', $desired_alias); + return null; + } + + // Check that there is not a namespace already defined for the + // desired alias + $current_namespace_uri = + $this->alias_to_namespace->get($desired_alias); + + if (($current_namespace_uri !== null) && + ($current_namespace_uri != $namespace_uri)) { + Auth_OpenID::log('Cannot map "%s" because previous mapping exists', + $namespace_uri); + return null; + } + + // Check that there is not already a (different) alias for + // this namespace URI + $alias = $this->namespace_to_alias->get($namespace_uri); + + if (($alias !== null) && ($alias != $desired_alias)) { + Auth_OpenID::log('Cannot map %s to alias %s. ' . + 'It is already mapped to alias %s', + $namespace_uri, $desired_alias, $alias); + return null; + } + + assert((Auth_OpenID_NULL_NAMESPACE === $desired_alias) || + is_string($desired_alias)); + + $this->alias_to_namespace->set($desired_alias, $namespace_uri); + $this->namespace_to_alias->set($namespace_uri, $desired_alias); + if ($implicit) { + array_push($this->implicit_namespaces, $namespace_uri); + } + + return $desired_alias; + } + + function add($namespace_uri) + { + // Add this namespace URI to the mapping, without caring what + // alias it ends up with + + // See if this namespace is already mapped to an alias + $alias = $this->namespace_to_alias->get($namespace_uri); + + if ($alias !== null) { + return $alias; + } + + // Fall back to generating a numerical alias + $i = 0; + while (1) { + $alias = 'ext' . strval($i); + if ($this->addAlias($namespace_uri, $alias) === null) { + $i += 1; + } else { + return $alias; + } + } + + // Should NEVER be reached! + return null; + } + + function contains($namespace_uri) + { + return $this->isDefined($namespace_uri); + } + + function isDefined($namespace_uri) + { + return $this->namespace_to_alias->contains($namespace_uri); + } +} + +/** + * In the implementation of this object, null represents the global + * namespace as well as a namespace with no key. + * + * @package OpenID + */ +class Auth_OpenID_Message { + + function Auth_OpenID_Message($openid_namespace = null) + { + // Create an empty Message + $this->allowed_openid_namespaces = array( + Auth_OpenID_OPENID1_NS, + Auth_OpenID_THE_OTHER_OPENID1_NS, + Auth_OpenID_OPENID2_NS); + + $this->args = new Auth_OpenID_Mapping(); + $this->namespaces = new Auth_OpenID_NamespaceMap(); + if ($openid_namespace === null) { + $this->_openid_ns_uri = null; + } else { + $implicit = Auth_OpenID_isOpenID1($openid_namespace); + $this->setOpenIDNamespace($openid_namespace, $implicit); + } + } + + function isOpenID1() + { + return Auth_OpenID_isOpenID1($this->getOpenIDNamespace()); + } + + function isOpenID2() + { + return $this->getOpenIDNamespace() == Auth_OpenID_OPENID2_NS; + } + + static function fromPostArgs($args) + { + // Construct a Message containing a set of POST arguments + $obj = new Auth_OpenID_Message(); + + // Partition into "openid." args and bare args + $openid_args = array(); + foreach ($args as $key => $value) { + + if (is_array($value)) { + return null; + } + + $parts = explode('.', $key, 2); + + if (count($parts) == 2) { + list($prefix, $rest) = $parts; + } else { + $prefix = null; + } + + if ($prefix != 'openid') { + $obj->args->set(array(Auth_OpenID_BARE_NS, $key), $value); + } else { + $openid_args[$rest] = $value; + } + } + + if ($obj->_fromOpenIDArgs($openid_args)) { + return $obj; + } else { + return null; + } + } + + static function fromOpenIDArgs($openid_args) + { + // Takes an array. + + // Construct a Message from a parsed KVForm message + $obj = new Auth_OpenID_Message(); + if ($obj->_fromOpenIDArgs($openid_args)) { + return $obj; + } else { + return null; + } + } + + /** + * @access private + */ + function _fromOpenIDArgs($openid_args) + { + global $Auth_OpenID_registered_aliases; + + // Takes an Auth_OpenID_Mapping instance OR an array. + + if (!Auth_OpenID_Mapping::isA($openid_args)) { + $openid_args = new Auth_OpenID_Mapping($openid_args); + } + + $ns_args = array(); + + // Resolve namespaces + foreach ($openid_args->items() as $pair) { + list($rest, $value) = $pair; + + $parts = explode('.', $rest, 2); + + if (count($parts) == 2) { + list($ns_alias, $ns_key) = $parts; + } else { + $ns_alias = Auth_OpenID_NULL_NAMESPACE; + $ns_key = $rest; + } + + if ($ns_alias == 'ns') { + if ($this->namespaces->addAlias($value, $ns_key) === null) { + return false; + } + } else if (($ns_alias == Auth_OpenID_NULL_NAMESPACE) && + ($ns_key == 'ns')) { + // null namespace + if ($this->setOpenIDNamespace($value, false) === false) { + return false; + } + } else { + $ns_args[] = array($ns_alias, $ns_key, $value); + } + } + + if (!$this->getOpenIDNamespace()) { + if ($this->setOpenIDNamespace(Auth_OpenID_OPENID1_NS, true) === + false) { + return false; + } + } + + // Actually put the pairs into the appropriate namespaces + foreach ($ns_args as $triple) { + list($ns_alias, $ns_key, $value) = $triple; + $ns_uri = $this->namespaces->getNamespaceURI($ns_alias); + if ($ns_uri === null) { + $ns_uri = $this->_getDefaultNamespace($ns_alias); + if ($ns_uri === null) { + + $ns_uri = Auth_OpenID_OPENID_NS; + $ns_key = sprintf('%s.%s', $ns_alias, $ns_key); + } else { + $this->namespaces->addAlias($ns_uri, $ns_alias, true); + } + } + + $this->setArg($ns_uri, $ns_key, $value); + } + + return true; + } + + function _getDefaultNamespace($mystery_alias) + { + global $Auth_OpenID_registered_aliases; + if ($this->isOpenID1()) { + return @$Auth_OpenID_registered_aliases[$mystery_alias]; + } + return null; + } + + function setOpenIDNamespace($openid_ns_uri, $implicit) + { + if (!in_array($openid_ns_uri, $this->allowed_openid_namespaces)) { + Auth_OpenID::log('Invalid null namespace: "%s"', $openid_ns_uri); + return false; + } + + $succeeded = $this->namespaces->addAlias($openid_ns_uri, + Auth_OpenID_NULL_NAMESPACE, + $implicit); + if ($succeeded === false) { + return false; + } + + $this->_openid_ns_uri = $openid_ns_uri; + + return true; + } + + function getOpenIDNamespace() + { + return $this->_openid_ns_uri; + } + + static function fromKVForm($kvform_string) + { + // Create a Message from a KVForm string + return Auth_OpenID_Message::fromOpenIDArgs( + Auth_OpenID_KVForm::toArray($kvform_string)); + } + + function copy() + { + return $this; + } + + function toPostArgs() + { + // Return all arguments with openid. in front of namespaced + // arguments. + + $args = array(); + + // Add namespace definitions to the output + foreach ($this->namespaces->iteritems() as $pair) { + list($ns_uri, $alias) = $pair; + if ($this->namespaces->isImplicit($ns_uri)) { + continue; + } + if ($alias == Auth_OpenID_NULL_NAMESPACE) { + $ns_key = 'openid.ns'; + } else { + $ns_key = 'openid.ns.' . $alias; + } + $args[$ns_key] = $ns_uri; + } + + foreach ($this->args->items() as $pair) { + list($ns_parts, $value) = $pair; + list($ns_uri, $ns_key) = $ns_parts; + $key = $this->getKey($ns_uri, $ns_key); + $args[$key] = $value; + } + + return $args; + } + + function toArgs() + { + // Return all namespaced arguments, failing if any + // non-namespaced arguments exist. + $post_args = $this->toPostArgs(); + $kvargs = array(); + foreach ($post_args as $k => $v) { + if (strpos($k, 'openid.') !== 0) { + // raise ValueError( + // 'This message can only be encoded as a POST, because it ' + // 'contains arguments that are not prefixed with "openid."') + return null; + } else { + $kvargs[substr($k, 7)] = $v; + } + } + + return $kvargs; + } + + function toFormMarkup($action_url, $form_tag_attrs = null, + $submit_text = "Continue") + { + $form = "<form accept-charset=\"UTF-8\" ". + "enctype=\"application/x-www-form-urlencoded\""; + + if (!$form_tag_attrs) { + $form_tag_attrs = array(); + } + + $form_tag_attrs['action'] = $action_url; + $form_tag_attrs['method'] = 'post'; + + unset($form_tag_attrs['enctype']); + unset($form_tag_attrs['accept-charset']); + + if ($form_tag_attrs) { + foreach ($form_tag_attrs as $name => $attr) { + $form .= sprintf(" %s=\"%s\"", $name, $attr); + } + } + + $form .= ">\n"; + + foreach ($this->toPostArgs() as $name => $value) { + $form .= sprintf( + "<input type=\"hidden\" name=\"%s\" value=\"%s\" />\n", + $name, urldecode($value)); + } + + $form .= sprintf("<input type=\"submit\" value=\"%s\" />\n", + $submit_text); + + $form .= "</form>\n"; + + return $form; + } + + function toURL($base_url) + { + // Generate a GET URL with the parameters in this message + // attached as query parameters. + return Auth_OpenID::appendArgs($base_url, $this->toPostArgs()); + } + + function toKVForm() + { + // Generate a KVForm string that contains the parameters in + // this message. This will fail if the message contains + // arguments outside of the 'openid.' prefix. + return Auth_OpenID_KVForm::fromArray($this->toArgs()); + } + + function toURLEncoded() + { + // Generate an x-www-urlencoded string + $args = array(); + + foreach ($this->toPostArgs() as $k => $v) { + $args[] = array($k, $v); + } + + sort($args); + return Auth_OpenID::httpBuildQuery($args); + } + + /** + * @access private + */ + function _fixNS($namespace) + { + // Convert an input value into the internally used values of + // this object + + if ($namespace == Auth_OpenID_OPENID_NS) { + if ($this->_openid_ns_uri === null) { + return new Auth_OpenID_FailureResponse(null, + 'OpenID namespace not set'); + } else { + $namespace = $this->_openid_ns_uri; + } + } + + if (($namespace != Auth_OpenID_BARE_NS) && + (!is_string($namespace))) { + //TypeError + $err_msg = sprintf("Namespace must be Auth_OpenID_BARE_NS, ". + "Auth_OpenID_OPENID_NS or a string. got %s", + print_r($namespace, true)); + return new Auth_OpenID_FailureResponse(null, $err_msg); + } + + if (($namespace != Auth_OpenID_BARE_NS) && + (strpos($namespace, ':') === false)) { + // fmt = 'OpenID 2.0 namespace identifiers SHOULD be URIs. Got %r' + // warnings.warn(fmt % (namespace,), DeprecationWarning) + + if ($namespace == 'sreg') { + // fmt = 'Using %r instead of "sreg" as namespace' + // warnings.warn(fmt % (SREG_URI,), DeprecationWarning,) + return Auth_OpenID_SREG_URI; + } + } + + return $namespace; + } + + function hasKey($namespace, $ns_key) + { + $namespace = $this->_fixNS($namespace); + if (Auth_OpenID::isFailure($namespace)) { + // XXX log me + return false; + } else { + return $this->args->contains(array($namespace, $ns_key)); + } + } + + function getKey($namespace, $ns_key) + { + // Get the key for a particular namespaced argument + $namespace = $this->_fixNS($namespace); + if (Auth_OpenID::isFailure($namespace)) { + return $namespace; + } + if ($namespace == Auth_OpenID_BARE_NS) { + return $ns_key; + } + + $ns_alias = $this->namespaces->getAlias($namespace); + + // No alias is defined, so no key can exist + if ($ns_alias === null) { + return null; + } + + if ($ns_alias == Auth_OpenID_NULL_NAMESPACE) { + $tail = $ns_key; + } else { + $tail = sprintf('%s.%s', $ns_alias, $ns_key); + } + + return 'openid.' . $tail; + } + + function getArg($namespace, $key, $default = null) + { + // Get a value for a namespaced key. + $namespace = $this->_fixNS($namespace); + + if (Auth_OpenID::isFailure($namespace)) { + return $namespace; + } else { + if ((!$this->args->contains(array($namespace, $key))) && + ($default == Auth_OpenID_NO_DEFAULT)) { + $err_msg = sprintf("Namespace %s missing required field %s", + $namespace, $key); + return new Auth_OpenID_FailureResponse(null, $err_msg); + } else { + return $this->args->get(array($namespace, $key), $default); + } + } + } + + function getArgs($namespace) + { + // Get the arguments that are defined for this namespace URI + + $namespace = $this->_fixNS($namespace); + if (Auth_OpenID::isFailure($namespace)) { + return $namespace; + } else { + $stuff = array(); + foreach ($this->args->items() as $pair) { + list($key, $value) = $pair; + list($pair_ns, $ns_key) = $key; + if ($pair_ns == $namespace) { + $stuff[$ns_key] = $value; + } + } + + return $stuff; + } + } + + function updateArgs($namespace, $updates) + { + // Set multiple key/value pairs in one call + + $namespace = $this->_fixNS($namespace); + + if (Auth_OpenID::isFailure($namespace)) { + return $namespace; + } else { + foreach ($updates as $k => $v) { + $this->setArg($namespace, $k, $v); + } + return true; + } + } + + function setArg($namespace, $key, $value) + { + // Set a single argument in this namespace + $namespace = $this->_fixNS($namespace); + + if (Auth_OpenID::isFailure($namespace)) { + return $namespace; + } else { + $this->args->set(array($namespace, $key), $value); + if ($namespace !== Auth_OpenID_BARE_NS) { + $this->namespaces->add($namespace); + } + return true; + } + } + + function delArg($namespace, $key) + { + $namespace = $this->_fixNS($namespace); + + if (Auth_OpenID::isFailure($namespace)) { + return $namespace; + } else { + return $this->args->del(array($namespace, $key)); + } + } + + function getAliasedArg($aliased_key, $default = null) + { + if ($aliased_key == 'ns') { + // Return the namespace URI for the OpenID namespace + return $this->getOpenIDNamespace(); + } + + $parts = explode('.', $aliased_key, 2); + + if (count($parts) != 2) { + $ns = null; + } else { + list($alias, $key) = $parts; + + if ($alias == 'ns') { + // Return the namespace URI for a namespace alias + // parameter. + return $this->namespaces->getNamespaceURI($key); + } else { + $ns = $this->namespaces->getNamespaceURI($alias); + } + } + + if ($ns === null) { + $key = $aliased_key; + $ns = $this->getOpenIDNamespace(); + } + + return $this->getArg($ns, $key, $default); + } +} + + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/MySQLStore.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/MySQLStore.php new file mode 100644 index 000000000..810f059f1 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/MySQLStore.php @@ -0,0 +1,77 @@ +<?php + +/** + * A MySQL store. + * + * @package OpenID + */ + +/** + * Require the base class file. + */ +require_once "Auth/OpenID/SQLStore.php"; + +/** + * An SQL store that uses MySQL as its backend. + * + * @package OpenID + */ +class Auth_OpenID_MySQLStore extends Auth_OpenID_SQLStore { + /** + * @access private + */ + function setSQL() + { + $this->sql['nonce_table'] = + "CREATE TABLE %s (\n". + " server_url VARCHAR(2047) NOT NULL,\n". + " timestamp INTEGER NOT NULL,\n". + " salt CHAR(40) NOT NULL,\n". + " UNIQUE (server_url(255), timestamp, salt)\n". + ") ENGINE=InnoDB"; + + $this->sql['assoc_table'] = + "CREATE TABLE %s (\n". + " server_url BLOB NOT NULL,\n". + " handle VARCHAR(255) NOT NULL,\n". + " secret BLOB NOT NULL,\n". + " issued INTEGER NOT NULL,\n". + " lifetime INTEGER NOT NULL,\n". + " assoc_type VARCHAR(64) NOT NULL,\n". + " PRIMARY KEY (server_url(255), handle)\n". + ") ENGINE=InnoDB"; + + $this->sql['set_assoc'] = + "REPLACE INTO %s (server_url, handle, secret, issued,\n". + " lifetime, assoc_type) VALUES (?, ?, !, ?, ?, ?)"; + + $this->sql['get_assocs'] = + "SELECT handle, secret, issued, lifetime, assoc_type FROM %s ". + "WHERE server_url = ?"; + + $this->sql['get_assoc'] = + "SELECT handle, secret, issued, lifetime, assoc_type FROM %s ". + "WHERE server_url = ? AND handle = ?"; + + $this->sql['remove_assoc'] = + "DELETE FROM %s WHERE server_url = ? AND handle = ?"; + + $this->sql['add_nonce'] = + "INSERT INTO %s (server_url, timestamp, salt) VALUES (?, ?, ?)"; + + $this->sql['clean_nonce'] = + "DELETE FROM %s WHERE timestamp < ?"; + + $this->sql['clean_assoc'] = + "DELETE FROM %s WHERE issued + lifetime < ?"; + } + + /** + * @access private + */ + function blobEncode($blob) + { + return "0x" . bin2hex($blob); + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/Nonce.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/Nonce.php new file mode 100644 index 000000000..b83c5911f --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/Nonce.php @@ -0,0 +1,108 @@ +<?php + +/** + * Nonce-related functionality. + * + * @package OpenID + */ + +/** + * Need CryptUtil to generate random strings. + */ +require_once 'Auth/OpenID/CryptUtil.php'; + +/** + * This is the characters that the nonces are made from. + */ +define('Auth_OpenID_Nonce_CHRS',"abcdefghijklmnopqrstuvwxyz" . + "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"); + +// Keep nonces for five hours (allow five hours for the combination of +// request time and clock skew). This is probably way more than is +// necessary, but there is not much overhead in storing nonces. +global $Auth_OpenID_SKEW; +$Auth_OpenID_SKEW = 60 * 60 * 5; + +define('Auth_OpenID_Nonce_REGEX', + '/(\d{4})-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)Z(.*)/'); + +define('Auth_OpenID_Nonce_TIME_FMT', + '%Y-%m-%dT%H:%M:%SZ'); + +function Auth_OpenID_splitNonce($nonce_string) +{ + // Extract a timestamp from the given nonce string + $result = preg_match(Auth_OpenID_Nonce_REGEX, $nonce_string, $matches); + if ($result != 1 || count($matches) != 8) { + return null; + } + + list($unused, + $tm_year, + $tm_mon, + $tm_mday, + $tm_hour, + $tm_min, + $tm_sec, + $uniquifier) = $matches; + + $timestamp = + @gmmktime($tm_hour, $tm_min, $tm_sec, $tm_mon, $tm_mday, $tm_year); + + if ($timestamp === false || $timestamp < 0) { + return null; + } + + return array($timestamp, $uniquifier); +} + +function Auth_OpenID_checkTimestamp($nonce_string, + $allowed_skew = null, + $now = null) +{ + // Is the timestamp that is part of the specified nonce string + // within the allowed clock-skew of the current time? + global $Auth_OpenID_SKEW; + + if ($allowed_skew === null) { + $allowed_skew = $Auth_OpenID_SKEW; + } + + $parts = Auth_OpenID_splitNonce($nonce_string); + if ($parts == null) { + return false; + } + + if ($now === null) { + $now = time(); + } + + $stamp = $parts[0]; + + // Time after which we should not use the nonce + $past = $now - $allowed_skew; + + // Time that is too far in the future for us to allow + $future = $now + $allowed_skew; + + // the stamp is not too far in the future and is not too far + // in the past + return (($past <= $stamp) && ($stamp <= $future)); +} + +function Auth_OpenID_mkNonce($when = null) +{ + // Generate a nonce with the current timestamp + $salt = Auth_OpenID_CryptUtil::randomString( + 6, Auth_OpenID_Nonce_CHRS); + if ($when === null) { + // It's safe to call time() with no arguments; it returns a + // GMT unix timestamp on PHP 4 and PHP 5. gmmktime() with no + // args returns a local unix timestamp on PHP 4, so don't use + // that. + $when = time(); + } + $time_str = gmstrftime(Auth_OpenID_Nonce_TIME_FMT, $when); + return $time_str . $salt; +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/PAPE.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/PAPE.php new file mode 100644 index 000000000..f08ca8bd0 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/PAPE.php @@ -0,0 +1,300 @@ +<?php + +/** + * An implementation of the OpenID Provider Authentication Policy + * Extension 1.0 + * + * See: + * http://openid.net/developers/specs/ + */ + +require_once "Auth/OpenID/Extension.php"; + +define('Auth_OpenID_PAPE_NS_URI', + "http://specs.openid.net/extensions/pape/1.0"); + +define('PAPE_AUTH_MULTI_FACTOR_PHYSICAL', + 'http://schemas.openid.net/pape/policies/2007/06/multi-factor-physical'); +define('PAPE_AUTH_MULTI_FACTOR', + 'http://schemas.openid.net/pape/policies/2007/06/multi-factor'); +define('PAPE_AUTH_PHISHING_RESISTANT', + 'http://schemas.openid.net/pape/policies/2007/06/phishing-resistant'); + +define('PAPE_TIME_VALIDATOR', + '/^[0-9]{4,4}-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9]Z$/'); +/** + * A Provider Authentication Policy request, sent from a relying party + * to a provider + * + * preferred_auth_policies: The authentication policies that + * the relying party prefers + * + * max_auth_age: The maximum time, in seconds, that the relying party + * wants to allow to have elapsed before the user must re-authenticate + */ +class Auth_OpenID_PAPE_Request extends Auth_OpenID_Extension { + + var $ns_alias = 'pape'; + var $ns_uri = Auth_OpenID_PAPE_NS_URI; + + function Auth_OpenID_PAPE_Request($preferred_auth_policies=null, + $max_auth_age=null) + { + if ($preferred_auth_policies === null) { + $preferred_auth_policies = array(); + } + + $this->preferred_auth_policies = $preferred_auth_policies; + $this->max_auth_age = $max_auth_age; + } + + /** + * Add an acceptable authentication policy URI to this request + * + * This method is intended to be used by the relying party to add + * acceptable authentication types to the request. + * + * policy_uri: The identifier for the preferred type of + * authentication. + */ + function addPolicyURI($policy_uri) + { + if (!in_array($policy_uri, $this->preferred_auth_policies)) { + $this->preferred_auth_policies[] = $policy_uri; + } + } + + function getExtensionArgs() + { + $ns_args = array( + 'preferred_auth_policies' => + implode(' ', $this->preferred_auth_policies) + ); + + if ($this->max_auth_age !== null) { + $ns_args['max_auth_age'] = strval($this->max_auth_age); + } + + return $ns_args; + } + + /** + * Instantiate a Request object from the arguments in a checkid_* + * OpenID message + */ + static function fromOpenIDRequest($request) + { + $obj = new Auth_OpenID_PAPE_Request(); + $args = $request->message->getArgs(Auth_OpenID_PAPE_NS_URI); + + if ($args === null || $args === array()) { + return null; + } + + $obj->parseExtensionArgs($args); + return $obj; + } + + /** + * Set the state of this request to be that expressed in these + * PAPE arguments + * + * @param args: The PAPE arguments without a namespace + */ + function parseExtensionArgs($args) + { + // preferred_auth_policies is a space-separated list of policy + // URIs + $this->preferred_auth_policies = array(); + + $policies_str = Auth_OpenID::arrayGet($args, 'preferred_auth_policies'); + if ($policies_str) { + foreach (explode(' ', $policies_str) as $uri) { + if (!in_array($uri, $this->preferred_auth_policies)) { + $this->preferred_auth_policies[] = $uri; + } + } + } + + // max_auth_age is base-10 integer number of seconds + $max_auth_age_str = Auth_OpenID::arrayGet($args, 'max_auth_age'); + if ($max_auth_age_str) { + $this->max_auth_age = Auth_OpenID::intval($max_auth_age_str); + } else { + $this->max_auth_age = null; + } + } + + /** + * Given a list of authentication policy URIs that a provider + * supports, this method returns the subsequence of those types + * that are preferred by the relying party. + * + * @param supported_types: A sequence of authentication policy + * type URIs that are supported by a provider + * + * @return array The sub-sequence of the supported types that are + * preferred by the relying party. This list will be ordered in + * the order that the types appear in the supported_types + * sequence, and may be empty if the provider does not prefer any + * of the supported authentication types. + */ + function preferredTypes($supported_types) + { + $result = array(); + + foreach ($supported_types as $st) { + if (in_array($st, $this->preferred_auth_policies)) { + $result[] = $st; + } + } + return $result; + } +} + +/** + * A Provider Authentication Policy response, sent from a provider to + * a relying party + */ +class Auth_OpenID_PAPE_Response extends Auth_OpenID_Extension { + + var $ns_alias = 'pape'; + var $ns_uri = Auth_OpenID_PAPE_NS_URI; + + function Auth_OpenID_PAPE_Response($auth_policies=null, $auth_time=null, + $nist_auth_level=null) + { + if ($auth_policies) { + $this->auth_policies = $auth_policies; + } else { + $this->auth_policies = array(); + } + + $this->auth_time = $auth_time; + $this->nist_auth_level = $nist_auth_level; + } + + /** + * Add a authentication policy to this response + * + * This method is intended to be used by the provider to add a + * policy that the provider conformed to when authenticating the + * user. + * + * @param policy_uri: The identifier for the preferred type of + * authentication. + */ + function addPolicyURI($policy_uri) + { + if (!in_array($policy_uri, $this->auth_policies)) { + $this->auth_policies[] = $policy_uri; + } + } + + /** + * Create an Auth_OpenID_PAPE_Response object from a successful + * OpenID library response. + * + * @param success_response $success_response A SuccessResponse + * from Auth_OpenID_Consumer::complete() + * + * @returns: A provider authentication policy response from the + * data that was supplied with the id_res response. + */ + static function fromSuccessResponse($success_response) + { + $obj = new Auth_OpenID_PAPE_Response(); + + // PAPE requires that the args be signed. + $args = $success_response->getSignedNS(Auth_OpenID_PAPE_NS_URI); + + if ($args === null || $args === array()) { + return null; + } + + $result = $obj->parseExtensionArgs($args); + + if ($result === false) { + return null; + } else { + return $obj; + } + } + + /** + * Parse the provider authentication policy arguments into the + * internal state of this object + * + * @param args: unqualified provider authentication policy + * arguments + * + * @param strict: Whether to return false when bad data is + * encountered + * + * @return null The data is parsed into the internal fields of + * this object. + */ + function parseExtensionArgs($args, $strict=false) + { + $policies_str = Auth_OpenID::arrayGet($args, 'auth_policies'); + if ($policies_str && $policies_str != "none") { + $this->auth_policies = explode(" ", $policies_str); + } + + $nist_level_str = Auth_OpenID::arrayGet($args, 'nist_auth_level'); + if ($nist_level_str !== null) { + $nist_level = Auth_OpenID::intval($nist_level_str); + + if ($nist_level === false) { + if ($strict) { + return false; + } else { + $nist_level = null; + } + } + + if (0 <= $nist_level && $nist_level < 5) { + $this->nist_auth_level = $nist_level; + } else if ($strict) { + return false; + } + } + + $auth_time = Auth_OpenID::arrayGet($args, 'auth_time'); + if ($auth_time !== null) { + if (preg_match(PAPE_TIME_VALIDATOR, $auth_time)) { + $this->auth_time = $auth_time; + } else if ($strict) { + return false; + } + } + } + + function getExtensionArgs() + { + $ns_args = array(); + if (count($this->auth_policies) > 0) { + $ns_args['auth_policies'] = implode(' ', $this->auth_policies); + } else { + $ns_args['auth_policies'] = 'none'; + } + + if ($this->nist_auth_level !== null) { + if (!in_array($this->nist_auth_level, range(0, 4), true)) { + return false; + } + $ns_args['nist_auth_level'] = strval($this->nist_auth_level); + } + + if ($this->auth_time !== null) { + if (!preg_match(PAPE_TIME_VALIDATOR, $this->auth_time)) { + return false; + } + + $ns_args['auth_time'] = $this->auth_time; + } + + return $ns_args; + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/Parse.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/Parse.php new file mode 100644 index 000000000..c81cb0103 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/Parse.php @@ -0,0 +1,377 @@ +<?php + +/** + * This module implements a VERY limited parser that finds <link> tags + * in the head of HTML or XHTML documents and parses out their + * attributes according to the OpenID spec. It is a liberal parser, + * but it requires these things from the data in order to work: + * + * - There must be an open <html> tag + * + * - There must be an open <head> tag inside of the <html> tag + * + * - Only <link>s that are found inside of the <head> tag are parsed + * (this is by design) + * + * - The parser follows the OpenID specification in resolving the + * attributes of the link tags. This means that the attributes DO + * NOT get resolved as they would by an XML or HTML parser. In + * particular, only certain entities get replaced, and href + * attributes do not get resolved relative to a base URL. + * + * From http://openid.net/specs.bml: + * + * - The openid.server URL MUST be an absolute URL. OpenID consumers + * MUST NOT attempt to resolve relative URLs. + * + * - The openid.server URL MUST NOT include entities other than &, + * <, >, and ". + * + * The parser ignores SGML comments and <![CDATA[blocks]]>. Both kinds + * of quoting are allowed for attributes. + * + * The parser deals with invalid markup in these ways: + * + * - Tag names are not case-sensitive + * + * - The <html> tag is accepted even when it is not at the top level + * + * - The <head> tag is accepted even when it is not a direct child of + * the <html> tag, but a <html> tag must be an ancestor of the + * <head> tag + * + * - <link> tags are accepted even when they are not direct children + * of the <head> tag, but a <head> tag must be an ancestor of the + * <link> tag + * + * - If there is no closing tag for an open <html> or <head> tag, the + * remainder of the document is viewed as being inside of the + * tag. If there is no closing tag for a <link> tag, the link tag is + * treated as a short tag. Exceptions to this rule are that <html> + * closes <html> and <body> or <head> closes <head> + * + * - Attributes of the <link> tag are not required to be quoted. + * + * - In the case of duplicated attribute names, the attribute coming + * last in the tag will be the value returned. + * + * - Any text that does not parse as an attribute within a link tag + * will be ignored. (e.g. <link pumpkin rel='openid.server' /> will + * ignore pumpkin) + * + * - If there are more than one <html> or <head> tag, the parser only + * looks inside of the first one. + * + * - The contents of <script> tags are ignored entirely, except + * unclosed <script> tags. Unclosed <script> tags are ignored. + * + * - Any other invalid markup is ignored, including unclosed SGML + * comments and unclosed <![CDATA[blocks. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @access private + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +/** + * Require Auth_OpenID::arrayGet(). + */ +require_once "Auth/OpenID.php"; + +class Auth_OpenID_Parse { + + /** + * Specify some flags for use with regex matching. + */ + var $_re_flags = "si"; + + /** + * Stuff to remove before we start looking for tags + */ + var $_removed_re = + "<!--.*?-->|<!\[CDATA\[.*?\]\]>|<script\b(?!:)[^>]*>.*?<\/script>"; + + /** + * Starts with the tag name at a word boundary, where the tag name + * is not a namespace + */ + var $_tag_expr = "<%s\b(?!:)([^>]*?)(?:\/>|>(.*)(?:<\/?%s\s*>|\Z))"; + + var $_attr_find = '\b(\w+)=("[^"]*"|\'[^\']*\'|[^\'"\s\/<>]+)'; + + var $_open_tag_expr = "<%s\b"; + var $_close_tag_expr = "<((\/%s\b)|(%s[^>\/]*\/))>"; + + function Auth_OpenID_Parse() + { + $this->_link_find = sprintf("/<link\b(?!:)([^>]*)(?!<)>/%s", + $this->_re_flags); + + $this->_entity_replacements = array( + 'amp' => '&', + 'lt' => '<', + 'gt' => '>', + 'quot' => '"' + ); + + $this->_attr_find = sprintf("/%s/%s", + $this->_attr_find, + $this->_re_flags); + + $this->_removed_re = sprintf("/%s/%s", + $this->_removed_re, + $this->_re_flags); + + $this->_ent_replace = + sprintf("&(%s);", implode("|", + $this->_entity_replacements)); + } + + /** + * Returns a regular expression that will match a given tag in an + * SGML string. + */ + function tagMatcher($tag_name, $close_tags = null) + { + $expr = $this->_tag_expr; + + if ($close_tags) { + $options = implode("|", array_merge(array($tag_name), $close_tags)); + $closer = sprintf("(?:%s)", $options); + } else { + $closer = $tag_name; + } + + $expr = sprintf($expr, $tag_name, $closer); + return sprintf("/%s/%s", $expr, $this->_re_flags); + } + + function openTag($tag_name) + { + $expr = sprintf($this->_open_tag_expr, $tag_name); + return sprintf("/%s/%s", $expr, $this->_re_flags); + } + + function closeTag($tag_name) + { + $expr = sprintf($this->_close_tag_expr, $tag_name, $tag_name); + return sprintf("/%s/%s", $expr, $this->_re_flags); + } + + function htmlBegin($s) + { + $matches = array(); + $result = preg_match($this->openTag('html'), $s, + $matches, PREG_OFFSET_CAPTURE); + if ($result === false || !$matches) { + return false; + } + // Return the offset of the first match. + return $matches[0][1]; + } + + function htmlEnd($s) + { + $matches = array(); + $result = preg_match($this->closeTag('html'), $s, + $matches, PREG_OFFSET_CAPTURE); + if ($result === false || !$matches) { + return false; + } + // Return the offset of the first match. + return $matches[count($matches) - 1][1]; + } + + function headFind() + { + return $this->tagMatcher('head', array('body', 'html')); + } + + function replaceEntities($str) + { + foreach ($this->_entity_replacements as $old => $new) { + $str = preg_replace(sprintf("/&%s;/", $old), $new, $str); + } + return $str; + } + + function removeQuotes($str) + { + $matches = array(); + $double = '/^"(.*)"$/'; + $single = "/^\'(.*)\'$/"; + + if (preg_match($double, $str, $matches)) { + return $matches[1]; + } else if (preg_match($single, $str, $matches)) { + return $matches[1]; + } else { + return $str; + } + } + + function match($regexp, $text, &$match) + { + if (!is_callable('mb_ereg_search_init')) { + return preg_match($regexp, $text, $match); + } + + $regexp = substr($regexp, 1, strlen($regexp) - 2 - strlen($this->_re_flags)); + mb_ereg_search_init($text); + if (!mb_ereg_search($regexp)) { + return false; + } + $match = mb_ereg_search_getregs(); + return true; + } + + /** + * Find all link tags in a string representing a HTML document and + * return a list of their attributes. + * + * @todo This is quite ineffective and may fail with the default + * pcre.backtrack_limit of 100000 in PHP 5.2, if $html is big. + * It should rather use stripos (in PHP5) or strpos()+strtoupper() + * in PHP4 to manage this. + * + * @param string $html The text to parse + * @return array $list An array of arrays of attributes, one for each + * link tag + */ + function parseLinkAttrs($html) + { + $stripped = preg_replace($this->_removed_re, + "", + $html); + + $html_begin = $this->htmlBegin($stripped); + $html_end = $this->htmlEnd($stripped); + + if ($html_begin === false) { + return array(); + } + + if ($html_end === false) { + $html_end = strlen($stripped); + } + + $stripped = substr($stripped, $html_begin, + $html_end - $html_begin); + + // Workaround to prevent PREG_BACKTRACK_LIMIT_ERROR: + $old_btlimit = ini_set( 'pcre.backtrack_limit', -1 ); + + // Try to find the <HEAD> tag. + $head_re = $this->headFind(); + $head_match = array(); + if (!$this->match($head_re, $stripped, $head_match)) { + ini_set( 'pcre.backtrack_limit', $old_btlimit ); + return array(); + } + + $link_data = array(); + $link_matches = array(); + + if (!preg_match_all($this->_link_find, $head_match[0], + $link_matches)) { + ini_set( 'pcre.backtrack_limit', $old_btlimit ); + return array(); + } + + foreach ($link_matches[0] as $link) { + $attr_matches = array(); + preg_match_all($this->_attr_find, $link, $attr_matches); + $link_attrs = array(); + foreach ($attr_matches[0] as $index => $full_match) { + $name = $attr_matches[1][$index]; + $value = $this->replaceEntities( + $this->removeQuotes($attr_matches[2][$index])); + + $link_attrs[strtolower($name)] = $value; + } + $link_data[] = $link_attrs; + } + + ini_set( 'pcre.backtrack_limit', $old_btlimit ); + return $link_data; + } + + function relMatches($rel_attr, $target_rel) + { + // Does this target_rel appear in the rel_str? + // XXX: TESTME + $rels = preg_split("/\s+/", trim($rel_attr)); + foreach ($rels as $rel) { + $rel = strtolower($rel); + if ($rel == $target_rel) { + return 1; + } + } + + return 0; + } + + function linkHasRel($link_attrs, $target_rel) + { + // Does this link have target_rel as a relationship? + // XXX: TESTME + $rel_attr = Auth_OpeniD::arrayGet($link_attrs, 'rel', null); + return ($rel_attr && $this->relMatches($rel_attr, + $target_rel)); + } + + function findLinksRel($link_attrs_list, $target_rel) + { + // Filter the list of link attributes on whether it has + // target_rel as a relationship. + // XXX: TESTME + $result = array(); + foreach ($link_attrs_list as $attr) { + if ($this->linkHasRel($attr, $target_rel)) { + $result[] = $attr; + } + } + + return $result; + } + + function findFirstHref($link_attrs_list, $target_rel) + { + // Return the value of the href attribute for the first link + // tag in the list that has target_rel as a relationship. + // XXX: TESTME + $matches = $this->findLinksRel($link_attrs_list, + $target_rel); + if (!$matches) { + return null; + } + $first = $matches[0]; + return Auth_OpenID::arrayGet($first, 'href', null); + } +} + +function Auth_OpenID_legacy_discover($html_text, $server_rel, + $delegate_rel) +{ + $p = new Auth_OpenID_Parse(); + + $link_attrs = $p->parseLinkAttrs($html_text); + + $server_url = $p->findFirstHref($link_attrs, + $server_rel); + + if ($server_url === null) { + return false; + } else { + $delegate_url = $p->findFirstHref($link_attrs, + $delegate_rel); + return array($delegate_url, $server_url); + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/PostgreSQLStore.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/PostgreSQLStore.php new file mode 100644 index 000000000..d90e43e00 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/PostgreSQLStore.php @@ -0,0 +1,112 @@ +<?php + +/** + * A PostgreSQL store. + * + * @package OpenID + */ + +/** + * Require the base class file. + */ +require_once "Auth/OpenID/SQLStore.php"; + +/** + * An SQL store that uses PostgreSQL as its backend. + * + * @package OpenID + */ +class Auth_OpenID_PostgreSQLStore extends Auth_OpenID_SQLStore { + /** + * @access private + */ + function setSQL() + { + $this->sql['nonce_table'] = + "CREATE TABLE %s (server_url VARCHAR(2047) NOT NULL, ". + "timestamp INTEGER NOT NULL, ". + "salt CHAR(40) NOT NULL, ". + "UNIQUE (server_url, timestamp, salt))"; + + $this->sql['assoc_table'] = + "CREATE TABLE %s (server_url VARCHAR(2047) NOT NULL, ". + "handle VARCHAR(255) NOT NULL, ". + "secret BYTEA NOT NULL, ". + "issued INTEGER NOT NULL, ". + "lifetime INTEGER NOT NULL, ". + "assoc_type VARCHAR(64) NOT NULL, ". + "PRIMARY KEY (server_url, handle), ". + "CONSTRAINT secret_length_constraint CHECK ". + "(LENGTH(secret) <= 128))"; + + $this->sql['set_assoc'] = + array( + 'insert_assoc' => "INSERT INTO %s (server_url, handle, ". + "secret, issued, lifetime, assoc_type) VALUES ". + "(?, ?, '!', ?, ?, ?)", + 'update_assoc' => "UPDATE %s SET secret = '!', issued = ?, ". + "lifetime = ?, assoc_type = ? WHERE server_url = ? AND ". + "handle = ?" + ); + + $this->sql['get_assocs'] = + "SELECT handle, secret, issued, lifetime, assoc_type FROM %s ". + "WHERE server_url = ?"; + + $this->sql['get_assoc'] = + "SELECT handle, secret, issued, lifetime, assoc_type FROM %s ". + "WHERE server_url = ? AND handle = ?"; + + $this->sql['remove_assoc'] = + "DELETE FROM %s WHERE server_url = ? AND handle = ?"; + + $this->sql['add_nonce'] = + "INSERT INTO %s (server_url, timestamp, salt) VALUES ". + "(?, ?, ?)" + ; + + $this->sql['clean_nonce'] = + "DELETE FROM %s WHERE timestamp < ?"; + + $this->sql['clean_assoc'] = + "DELETE FROM %s WHERE issued + lifetime < ?"; + } + + /** + * @access private + */ + function _set_assoc($server_url, $handle, $secret, $issued, $lifetime, + $assoc_type) + { + $result = $this->_get_assoc($server_url, $handle); + if ($result) { + // Update the table since this associations already exists. + $this->connection->query($this->sql['set_assoc']['update_assoc'], + array($secret, $issued, $lifetime, + $assoc_type, $server_url, $handle)); + } else { + // Insert a new record because this association wasn't + // found. + $this->connection->query($this->sql['set_assoc']['insert_assoc'], + array($server_url, $handle, $secret, + $issued, $lifetime, $assoc_type)); + } + } + + /** + * @access private + */ + function blobEncode($blob) + { + return $this->_octify($blob); + } + + /** + * @access private + */ + function blobDecode($blob) + { + return $this->_unoctify($blob); + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/SQLStore.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/SQLStore.php new file mode 100644 index 000000000..c04059732 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/SQLStore.php @@ -0,0 +1,557 @@ +<?php + +/** + * SQL-backed OpenID stores. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +/** + * @access private + */ +require_once 'Auth/OpenID/Interface.php'; +require_once 'Auth/OpenID/Nonce.php'; + +/** + * @access private + */ +require_once 'Auth/OpenID.php'; + +/** + * @access private + */ +require_once 'Auth/OpenID/Nonce.php'; + +/** + * This is the parent class for the SQL stores, which contains the + * logic common to all of the SQL stores. + * + * The table names used are determined by the class variables + * associations_table_name and nonces_table_name. To change the name + * of the tables used, pass new table names into the constructor. + * + * To create the tables with the proper schema, see the createTables + * method. + * + * This class shouldn't be used directly. Use one of its subclasses + * instead, as those contain the code necessary to use a specific + * database. If you're an OpenID integrator and you'd like to create + * an SQL-driven store that wraps an application's database + * abstraction, be sure to create a subclass of + * {@link Auth_OpenID_DatabaseConnection} that calls the application's + * database abstraction calls. Then, pass an instance of your new + * database connection class to your SQLStore subclass constructor. + * + * All methods other than the constructor and createTables should be + * considered implementation details. + * + * @package OpenID + */ +class Auth_OpenID_SQLStore extends Auth_OpenID_OpenIDStore { + + /** + * This creates a new SQLStore instance. It requires an + * established database connection be given to it, and it allows + * overriding the default table names. + * + * @param connection $connection This must be an established + * connection to a database of the correct type for the SQLStore + * subclass you're using. This must either be an PEAR DB + * connection handle or an instance of a subclass of + * Auth_OpenID_DatabaseConnection. + * + * @param associations_table: This is an optional parameter to + * specify the name of the table used for storing associations. + * The default value is 'oid_associations'. + * + * @param nonces_table: This is an optional parameter to specify + * the name of the table used for storing nonces. The default + * value is 'oid_nonces'. + */ + function Auth_OpenID_SQLStore($connection, + $associations_table = null, + $nonces_table = null) + { + $this->associations_table_name = "oid_associations"; + $this->nonces_table_name = "oid_nonces"; + + // Check the connection object type to be sure it's a PEAR + // database connection. + if (!(is_object($connection) && + (is_subclass_of($connection, 'db_common') || + is_subclass_of($connection, + 'auth_openid_databaseconnection')))) { + trigger_error("Auth_OpenID_SQLStore expected PEAR connection " . + "object (got ".get_class($connection).")", + E_USER_ERROR); + return; + } + + $this->connection = $connection; + + // Be sure to set the fetch mode so the results are keyed on + // column name instead of column index. This is a PEAR + // constant, so only try to use it if PEAR is present. Note + // that Auth_Openid_Databaseconnection instances need not + // implement ::setFetchMode for this reason. + if (is_subclass_of($this->connection, 'db_common')) { + $this->connection->setFetchMode(DB_FETCHMODE_ASSOC); + } + + if ($associations_table) { + $this->associations_table_name = $associations_table; + } + + if ($nonces_table) { + $this->nonces_table_name = $nonces_table; + } + + $this->max_nonce_age = 6 * 60 * 60; + + // Be sure to run the database queries with auto-commit mode + // turned OFF, because we want every function to run in a + // transaction, implicitly. As a rule, methods named with a + // leading underscore will NOT control transaction behavior. + // Callers of these methods will worry about transactions. + $this->connection->autoCommit(false); + + // Create an empty SQL strings array. + $this->sql = array(); + + // Call this method (which should be overridden by subclasses) + // to populate the $this->sql array with SQL strings. + $this->setSQL(); + + // Verify that all required SQL statements have been set, and + // raise an error if any expected SQL strings were either + // absent or empty. + list($missing, $empty) = $this->_verifySQL(); + + if ($missing) { + trigger_error("Expected keys in SQL query list: " . + implode(", ", $missing), + E_USER_ERROR); + return; + } + + if ($empty) { + trigger_error("SQL list keys have no SQL strings: " . + implode(", ", $empty), + E_USER_ERROR); + return; + } + + // Add table names to queries. + $this->_fixSQL(); + } + + function tableExists($table_name) + { + return !$this->isError( + $this->connection->query( + sprintf("SELECT * FROM %s LIMIT 0", + $table_name))); + } + + /** + * Returns true if $value constitutes a database error; returns + * false otherwise. + */ + function isError($value) + { + return PEAR::isError($value); + } + + /** + * Converts a query result to a boolean. If the result is a + * database error according to $this->isError(), this returns + * false; otherwise, this returns true. + */ + function resultToBool($obj) + { + if ($this->isError($obj)) { + return false; + } else { + return true; + } + } + + /** + * This method should be overridden by subclasses. This method is + * called by the constructor to set values in $this->sql, which is + * an array keyed on sql name. + */ + function setSQL() + { + } + + /** + * Resets the store by removing all records from the store's + * tables. + */ + function reset() + { + $this->connection->query(sprintf("DELETE FROM %s", + $this->associations_table_name)); + + $this->connection->query(sprintf("DELETE FROM %s", + $this->nonces_table_name)); + } + + /** + * @access private + */ + function _verifySQL() + { + $missing = array(); + $empty = array(); + + $required_sql_keys = array( + 'nonce_table', + 'assoc_table', + 'set_assoc', + 'get_assoc', + 'get_assocs', + 'remove_assoc' + ); + + foreach ($required_sql_keys as $key) { + if (!array_key_exists($key, $this->sql)) { + $missing[] = $key; + } else if (!$this->sql[$key]) { + $empty[] = $key; + } + } + + return array($missing, $empty); + } + + /** + * @access private + */ + function _fixSQL() + { + $replacements = array( + array( + 'value' => $this->nonces_table_name, + 'keys' => array('nonce_table', + 'add_nonce', + 'clean_nonce') + ), + array( + 'value' => $this->associations_table_name, + 'keys' => array('assoc_table', + 'set_assoc', + 'get_assoc', + 'get_assocs', + 'remove_assoc', + 'clean_assoc') + ) + ); + + foreach ($replacements as $item) { + $value = $item['value']; + $keys = $item['keys']; + + foreach ($keys as $k) { + if (is_array($this->sql[$k])) { + foreach ($this->sql[$k] as $part_key => $part_value) { + $this->sql[$k][$part_key] = sprintf($part_value, + $value); + } + } else { + $this->sql[$k] = sprintf($this->sql[$k], $value); + } + } + } + } + + function blobDecode($blob) + { + return $blob; + } + + function blobEncode($str) + { + return $str; + } + + function createTables() + { + $this->connection->autoCommit(true); + $n = $this->create_nonce_table(); + $a = $this->create_assoc_table(); + $this->connection->autoCommit(false); + + if ($n && $a) { + return true; + } else { + return false; + } + } + + function create_nonce_table() + { + if (!$this->tableExists($this->nonces_table_name)) { + $r = $this->connection->query($this->sql['nonce_table']); + return $this->resultToBool($r); + } + return true; + } + + function create_assoc_table() + { + if (!$this->tableExists($this->associations_table_name)) { + $r = $this->connection->query($this->sql['assoc_table']); + return $this->resultToBool($r); + } + return true; + } + + /** + * @access private + */ + function _set_assoc($server_url, $handle, $secret, $issued, + $lifetime, $assoc_type) + { + return $this->connection->query($this->sql['set_assoc'], + array( + $server_url, + $handle, + $secret, + $issued, + $lifetime, + $assoc_type)); + } + + function storeAssociation($server_url, $association) + { + if ($this->resultToBool($this->_set_assoc( + $server_url, + $association->handle, + $this->blobEncode( + $association->secret), + $association->issued, + $association->lifetime, + $association->assoc_type + ))) { + $this->connection->commit(); + } else { + $this->connection->rollback(); + } + } + + /** + * @access private + */ + function _get_assoc($server_url, $handle) + { + $result = $this->connection->getRow($this->sql['get_assoc'], + array($server_url, $handle)); + if ($this->isError($result)) { + return null; + } else { + return $result; + } + } + + /** + * @access private + */ + function _get_assocs($server_url) + { + $result = $this->connection->getAll($this->sql['get_assocs'], + array($server_url)); + + if ($this->isError($result)) { + return array(); + } else { + return $result; + } + } + + function removeAssociation($server_url, $handle) + { + if ($this->_get_assoc($server_url, $handle) == null) { + return false; + } + + if ($this->resultToBool($this->connection->query( + $this->sql['remove_assoc'], + array($server_url, $handle)))) { + $this->connection->commit(); + } else { + $this->connection->rollback(); + } + + return true; + } + + function getAssociation($server_url, $handle = null) + { + if ($handle !== null) { + $assoc = $this->_get_assoc($server_url, $handle); + + $assocs = array(); + if ($assoc) { + $assocs[] = $assoc; + } + } else { + $assocs = $this->_get_assocs($server_url); + } + + if (!$assocs || (count($assocs) == 0)) { + return null; + } else { + $associations = array(); + + foreach ($assocs as $assoc_row) { + $assoc = new Auth_OpenID_Association($assoc_row['handle'], + $assoc_row['secret'], + $assoc_row['issued'], + $assoc_row['lifetime'], + $assoc_row['assoc_type']); + + $assoc->secret = $this->blobDecode($assoc->secret); + + if ($assoc->getExpiresIn() == 0) { + $this->removeAssociation($server_url, $assoc->handle); + } else { + $associations[] = array($assoc->issued, $assoc); + } + } + + if ($associations) { + $issued = array(); + $assocs = array(); + foreach ($associations as $key => $assoc) { + $issued[$key] = $assoc[0]; + $assocs[$key] = $assoc[1]; + } + + array_multisort($issued, SORT_DESC, $assocs, SORT_DESC, + $associations); + + // return the most recently issued one. + list($issued, $assoc) = $associations[0]; + return $assoc; + } else { + return null; + } + } + } + + /** + * @access private + */ + function _add_nonce($server_url, $timestamp, $salt) + { + $sql = $this->sql['add_nonce']; + $result = $this->connection->query($sql, array($server_url, + $timestamp, + $salt)); + if ($this->isError($result)) { + $this->connection->rollback(); + } else { + $this->connection->commit(); + } + return $this->resultToBool($result); + } + + function useNonce($server_url, $timestamp, $salt) + { + global $Auth_OpenID_SKEW; + + if ( abs($timestamp - time()) > $Auth_OpenID_SKEW ) { + return false; + } + + return $this->_add_nonce($server_url, $timestamp, $salt); + } + + /** + * "Octifies" a binary string by returning a string with escaped + * octal bytes. This is used for preparing binary data for + * PostgreSQL BYTEA fields. + * + * @access private + */ + function _octify($str) + { + $result = ""; + for ($i = 0; $i < Auth_OpenID::bytes($str); $i++) { + $ch = substr($str, $i, 1); + if ($ch == "\\") { + $result .= "\\\\\\\\"; + } else if (ord($ch) == 0) { + $result .= "\\\\000"; + } else { + $result .= "\\" . strval(decoct(ord($ch))); + } + } + return $result; + } + + /** + * "Unoctifies" octal-escaped data from PostgreSQL and returns the + * resulting ASCII (possibly binary) string. + * + * @access private + */ + function _unoctify($str) + { + $result = ""; + $i = 0; + while ($i < strlen($str)) { + $char = $str[$i]; + if ($char == "\\") { + // Look to see if the next char is a backslash and + // append it. + if ($str[$i + 1] != "\\") { + $octal_digits = substr($str, $i + 1, 3); + $dec = octdec($octal_digits); + $char = chr($dec); + $i += 4; + } else { + $char = "\\"; + $i += 2; + } + } else { + $i += 1; + } + + $result .= $char; + } + + return $result; + } + + function cleanupNonces() + { + global $Auth_OpenID_SKEW; + $v = time() - $Auth_OpenID_SKEW; + + $this->connection->query($this->sql['clean_nonce'], array($v)); + $num = $this->connection->affectedRows(); + $this->connection->commit(); + return $num; + } + + function cleanupAssociations() + { + $this->connection->query($this->sql['clean_assoc'], + array(time())); + $num = $this->connection->affectedRows(); + $this->connection->commit(); + return $num; + } +} + + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/SQLiteStore.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/SQLiteStore.php new file mode 100644 index 000000000..4558fa1c3 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/SQLiteStore.php @@ -0,0 +1,70 @@ +<?php + +/** + * An SQLite store. + * + * @package OpenID + */ + +/** + * Require the base class file. + */ +require_once "Auth/OpenID/SQLStore.php"; + +/** + * An SQL store that uses SQLite as its backend. + * + * @package OpenID + */ +class Auth_OpenID_SQLiteStore extends Auth_OpenID_SQLStore { + function setSQL() + { + $this->sql['nonce_table'] = + "CREATE TABLE %s (server_url VARCHAR(2047), timestamp INTEGER, ". + "salt CHAR(40), UNIQUE (server_url, timestamp, salt))"; + + $this->sql['assoc_table'] = + "CREATE TABLE %s (server_url VARCHAR(2047), handle VARCHAR(255), ". + "secret BLOB(128), issued INTEGER, lifetime INTEGER, ". + "assoc_type VARCHAR(64), PRIMARY KEY (server_url, handle))"; + + $this->sql['set_assoc'] = + "INSERT OR REPLACE INTO %s VALUES (?, ?, ?, ?, ?, ?)"; + + $this->sql['get_assocs'] = + "SELECT handle, secret, issued, lifetime, assoc_type FROM %s ". + "WHERE server_url = ?"; + + $this->sql['get_assoc'] = + "SELECT handle, secret, issued, lifetime, assoc_type FROM %s ". + "WHERE server_url = ? AND handle = ?"; + + $this->sql['remove_assoc'] = + "DELETE FROM %s WHERE server_url = ? AND handle = ?"; + + $this->sql['add_nonce'] = + "INSERT INTO %s (server_url, timestamp, salt) VALUES (?, ?, ?)"; + + $this->sql['clean_nonce'] = + "DELETE FROM %s WHERE timestamp < ?"; + + $this->sql['clean_assoc'] = + "DELETE FROM %s WHERE issued + lifetime < ?"; + } + + /** + * @access private + */ + function _add_nonce($server_url, $timestamp, $salt) + { + // PECL SQLite extensions 1.0.3 and older (1.0.3 is the + // current release at the time of this writing) have a broken + // sqlite_escape_string function that breaks when passed the + // empty string. Prefixing all strings with one character + // keeps them unique and avoids this bug. The nonce table is + // write-only, so we don't have to worry about updating other + // functions with this same bad hack. + return parent::_add_nonce('x' . $server_url, $timestamp, $salt); + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/SReg.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/SReg.php new file mode 100644 index 000000000..5ece70724 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/SReg.php @@ -0,0 +1,521 @@ +<?php + +/** + * Simple registration request and response parsing and object + * representation. + * + * This module contains objects representing simple registration + * requests and responses that can be used with both OpenID relying + * parties and OpenID providers. + * + * 1. The relying party creates a request object and adds it to the + * {@link Auth_OpenID_AuthRequest} object before making the + * checkid request to the OpenID provider: + * + * $sreg_req = Auth_OpenID_SRegRequest::build(array('email')); + * $auth_request->addExtension($sreg_req); + * + * 2. The OpenID provider extracts the simple registration request + * from the OpenID request using {@link + * Auth_OpenID_SRegRequest::fromOpenIDRequest}, gets the user's + * approval and data, creates an {@link Auth_OpenID_SRegResponse} + * object and adds it to the id_res response: + * + * $sreg_req = Auth_OpenID_SRegRequest::fromOpenIDRequest( + * $checkid_request); + * // [ get the user's approval and data, informing the user that + * // the fields in sreg_response were requested ] + * $sreg_resp = Auth_OpenID_SRegResponse::extractResponse( + * $sreg_req, $user_data); + * $sreg_resp->toMessage($openid_response->fields); + * + * 3. The relying party uses {@link + * Auth_OpenID_SRegResponse::fromSuccessResponse} to extract the data + * from the OpenID response: + * + * $sreg_resp = Auth_OpenID_SRegResponse::fromSuccessResponse( + * $success_response); + * + * @package OpenID + */ + +/** + * Import message and extension internals. + */ +require_once 'Auth/OpenID/Message.php'; +require_once 'Auth/OpenID/Extension.php'; + +// The data fields that are listed in the sreg spec +global $Auth_OpenID_sreg_data_fields; +$Auth_OpenID_sreg_data_fields = array( + 'fullname' => 'Full Name', + 'nickname' => 'Nickname', + 'dob' => 'Date of Birth', + 'email' => 'E-mail Address', + 'gender' => 'Gender', + 'postcode' => 'Postal Code', + 'country' => 'Country', + 'language' => 'Language', + 'timezone' => 'Time Zone'); + +/** + * Check to see that the given value is a valid simple registration + * data field name. Return true if so, false if not. + */ +function Auth_OpenID_checkFieldName($field_name) +{ + global $Auth_OpenID_sreg_data_fields; + + if (!in_array($field_name, array_keys($Auth_OpenID_sreg_data_fields))) { + return false; + } + return true; +} + +// URI used in the wild for Yadis documents advertising simple +// registration support +define('Auth_OpenID_SREG_NS_URI_1_0', 'http://openid.net/sreg/1.0'); + +// URI in the draft specification for simple registration 1.1 +// <http://openid.net/specs/openid-simple-registration-extension-1_1-01.html> +define('Auth_OpenID_SREG_NS_URI_1_1', 'http://openid.net/extensions/sreg/1.1'); + +// This attribute will always hold the preferred URI to use when +// adding sreg support to an XRDS file or in an OpenID namespace +// declaration. +define('Auth_OpenID_SREG_NS_URI', Auth_OpenID_SREG_NS_URI_1_1); + +Auth_OpenID_registerNamespaceAlias(Auth_OpenID_SREG_NS_URI_1_1, 'sreg'); + +/** + * Does the given endpoint advertise support for simple + * registration? + * + * $endpoint: The endpoint object as returned by OpenID discovery. + * returns whether an sreg type was advertised by the endpoint + */ +function Auth_OpenID_supportsSReg($endpoint) +{ + return ($endpoint->usesExtension(Auth_OpenID_SREG_NS_URI_1_1) || + $endpoint->usesExtension(Auth_OpenID_SREG_NS_URI_1_0)); +} + +/** + * A base class for classes dealing with Simple Registration protocol + * messages. + * + * @package OpenID + */ +class Auth_OpenID_SRegBase extends Auth_OpenID_Extension { + /** + * Extract the simple registration namespace URI from the given + * OpenID message. Handles OpenID 1 and 2, as well as both sreg + * namespace URIs found in the wild, as well as missing namespace + * definitions (for OpenID 1) + * + * $message: The OpenID message from which to parse simple + * registration fields. This may be a request or response message. + * + * Returns the sreg namespace URI for the supplied message. The + * message may be modified to define a simple registration + * namespace. + * + * @access private + */ + static function _getSRegNS($message) + { + $alias = null; + $found_ns_uri = null; + + // See if there exists an alias for one of the two defined + // simple registration types. + foreach (array(Auth_OpenID_SREG_NS_URI_1_1, + Auth_OpenID_SREG_NS_URI_1_0) as $sreg_ns_uri) { + $alias = $message->namespaces->getAlias($sreg_ns_uri); + if ($alias !== null) { + $found_ns_uri = $sreg_ns_uri; + break; + } + } + + if ($alias === null) { + // There is no alias for either of the types, so try to + // add one. We default to using the modern value (1.1) + $found_ns_uri = Auth_OpenID_SREG_NS_URI_1_1; + if ($message->namespaces->addAlias(Auth_OpenID_SREG_NS_URI_1_1, + 'sreg') === null) { + // An alias for the string 'sreg' already exists, but + // it's defined for something other than simple + // registration + return null; + } + } + + return $found_ns_uri; + } +} + +/** + * An object to hold the state of a simple registration request. + * + * required: A list of the required fields in this simple registration + * request + * + * optional: A list of the optional fields in this simple registration + * request + * + * @package OpenID + */ +class Auth_OpenID_SRegRequest extends Auth_OpenID_SRegBase { + + var $ns_alias = 'sreg'; + + /** + * Initialize an empty simple registration request. + */ + static function build($required=null, $optional=null, + $policy_url=null, + $sreg_ns_uri=Auth_OpenID_SREG_NS_URI, + $cls='Auth_OpenID_SRegRequest') + { + $obj = new $cls(); + + $obj->required = array(); + $obj->optional = array(); + $obj->policy_url = $policy_url; + $obj->ns_uri = $sreg_ns_uri; + + if ($required) { + if (!$obj->requestFields($required, true, true)) { + return null; + } + } + + if ($optional) { + if (!$obj->requestFields($optional, false, true)) { + return null; + } + } + + return $obj; + } + + /** + * Create a simple registration request that contains the fields + * that were requested in the OpenID request with the given + * arguments + * + * $request: The OpenID authentication request from which to + * extract an sreg request. + * + * $cls: name of class to use when creating sreg request object. + * Used for testing. + * + * Returns the newly created simple registration request + */ + static function fromOpenIDRequest($request, $cls='Auth_OpenID_SRegRequest') + { + + $obj = call_user_func_array(array($cls, 'build'), + array(null, null, null, Auth_OpenID_SREG_NS_URI, $cls)); + + // Since we're going to mess with namespace URI mapping, don't + // mutate the object that was passed in. + $m = $request->message; + + $obj->ns_uri = $obj->_getSRegNS($m); + $args = $m->getArgs($obj->ns_uri); + + if ($args === null || Auth_OpenID::isFailure($args)) { + return null; + } + + $obj->parseExtensionArgs($args); + + return $obj; + } + + /** + * Parse the unqualified simple registration request parameters + * and add them to this object. + * + * This method is essentially the inverse of + * getExtensionArgs. This method restores the serialized simple + * registration request fields. + * + * If you are extracting arguments from a standard OpenID + * checkid_* request, you probably want to use fromOpenIDRequest, + * which will extract the sreg namespace and arguments from the + * OpenID request. This method is intended for cases where the + * OpenID server needs more control over how the arguments are + * parsed than that method provides. + * + * $args == $message->getArgs($ns_uri); + * $request->parseExtensionArgs($args); + * + * $args: The unqualified simple registration arguments + * + * strict: Whether requests with fields that are not defined in + * the simple registration specification should be tolerated (and + * ignored) + */ + function parseExtensionArgs($args, $strict=false) + { + foreach (array('required', 'optional') as $list_name) { + $required = ($list_name == 'required'); + $items = Auth_OpenID::arrayGet($args, $list_name); + if ($items) { + foreach (explode(',', $items) as $field_name) { + if (!$this->requestField($field_name, $required, $strict)) { + if ($strict) { + return false; + } + } + } + } + } + + $this->policy_url = Auth_OpenID::arrayGet($args, 'policy_url'); + + return true; + } + + /** + * A list of all of the simple registration fields that were + * requested, whether they were required or optional. + */ + function allRequestedFields() + { + return array_merge($this->required, $this->optional); + } + + /** + * Have any simple registration fields been requested? + */ + function wereFieldsRequested() + { + return count($this->allRequestedFields()); + } + + /** + * Was this field in the request? + */ + function contains($field_name) + { + return (in_array($field_name, $this->required) || + in_array($field_name, $this->optional)); + } + + /** + * Request the specified field from the OpenID user + * + * $field_name: the unqualified simple registration field name + * + * required: whether the given field should be presented to the + * user as being a required to successfully complete the request + * + * strict: whether to raise an exception when a field is added to + * a request more than once + */ + function requestField($field_name, + $required=false, $strict=false) + { + if (!Auth_OpenID_checkFieldName($field_name)) { + return false; + } + + if ($strict) { + if ($this->contains($field_name)) { + return false; + } + } else { + if (in_array($field_name, $this->required)) { + return true; + } + + if (in_array($field_name, $this->optional)) { + if ($required) { + unset($this->optional[array_search($field_name, + $this->optional)]); + } else { + return true; + } + } + } + + if ($required) { + $this->required[] = $field_name; + } else { + $this->optional[] = $field_name; + } + + return true; + } + + /** + * Add the given list of fields to the request + * + * field_names: The simple registration data fields to request + * + * required: Whether these values should be presented to the user + * as required + * + * strict: whether to raise an exception when a field is added to + * a request more than once + */ + function requestFields($field_names, $required=false, $strict=false) + { + if (!is_array($field_names)) { + return false; + } + + foreach ($field_names as $field_name) { + if (!$this->requestField($field_name, $required, $strict=$strict)) { + return false; + } + } + + return true; + } + + /** + * Get a dictionary of unqualified simple registration arguments + * representing this request. + * + * This method is essentially the inverse of + * C{L{parseExtensionArgs}}. This method serializes the simple + * registration request fields. + */ + function getExtensionArgs() + { + $args = array(); + + if ($this->required) { + $args['required'] = implode(',', $this->required); + } + + if ($this->optional) { + $args['optional'] = implode(',', $this->optional); + } + + if ($this->policy_url) { + $args['policy_url'] = $this->policy_url; + } + + return $args; + } +} + +/** + * Represents the data returned in a simple registration response + * inside of an OpenID C{id_res} response. This object will be created + * by the OpenID server, added to the C{id_res} response object, and + * then extracted from the C{id_res} message by the Consumer. + * + * @package OpenID + */ +class Auth_OpenID_SRegResponse extends Auth_OpenID_SRegBase { + + var $ns_alias = 'sreg'; + + function Auth_OpenID_SRegResponse($data=null, + $sreg_ns_uri=Auth_OpenID_SREG_NS_URI) + { + if ($data === null) { + $this->data = array(); + } else { + $this->data = $data; + } + + $this->ns_uri = $sreg_ns_uri; + } + + /** + * Take a C{L{SRegRequest}} and a dictionary of simple + * registration values and create a C{L{SRegResponse}} object + * containing that data. + * + * request: The simple registration request object + * + * data: The simple registration data for this response, as a + * dictionary from unqualified simple registration field name to + * string (unicode) value. For instance, the nickname should be + * stored under the key 'nickname'. + */ + static function extractResponse($request, $data) + { + $obj = new Auth_OpenID_SRegResponse(); + $obj->ns_uri = $request->ns_uri; + + foreach ($request->allRequestedFields() as $field) { + $value = Auth_OpenID::arrayGet($data, $field); + if ($value !== null) { + $obj->data[$field] = $value; + } + } + + return $obj; + } + + /** + * Create a C{L{SRegResponse}} object from a successful OpenID + * library response + * (C{L{openid.consumer.consumer.SuccessResponse}}) response + * message + * + * success_response: A SuccessResponse from consumer.complete() + * + * signed_only: Whether to process only data that was + * signed in the id_res message from the server. + * + * Returns a simple registration response containing the data that + * was supplied with the C{id_res} response. + */ + static function fromSuccessResponse($success_response, $signed_only=true) + { + global $Auth_OpenID_sreg_data_fields; + + $obj = new Auth_OpenID_SRegResponse(); + $obj->ns_uri = $obj->_getSRegNS($success_response->message); + + if ($signed_only) { + $args = $success_response->getSignedNS($obj->ns_uri); + } else { + $args = $success_response->message->getArgs($obj->ns_uri); + } + + if ($args === null || Auth_OpenID::isFailure($args)) { + return null; + } + + foreach ($Auth_OpenID_sreg_data_fields as $field_name => $desc) { + if (in_array($field_name, array_keys($args))) { + $obj->data[$field_name] = $args[$field_name]; + } + } + + return $obj; + } + + function getExtensionArgs() + { + return $this->data; + } + + // Read-only dictionary interface + function get($field_name, $default=null) + { + if (!Auth_OpenID_checkFieldName($field_name)) { + return null; + } + + return Auth_OpenID::arrayGet($this->data, $field_name, $default); + } + + function contents() + { + return $this->data; + } +} + + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/Server.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/Server.php new file mode 100644 index 000000000..312a92866 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/Server.php @@ -0,0 +1,1765 @@ +<?php + +/** + * OpenID server protocol and logic. + * + * Overview + * + * An OpenID server must perform three tasks: + * + * 1. Examine the incoming request to determine its nature and validity. + * 2. Make a decision about how to respond to this request. + * 3. Format the response according to the protocol. + * + * The first and last of these tasks may performed by the {@link + * Auth_OpenID_Server::decodeRequest()} and {@link + * Auth_OpenID_Server::encodeResponse} methods. Who gets to do the + * intermediate task -- deciding how to respond to the request -- will + * depend on what type of request it is. + * + * If it's a request to authenticate a user (a 'checkid_setup' or + * 'checkid_immediate' request), you need to decide if you will assert + * that this user may claim the identity in question. Exactly how you + * do that is a matter of application policy, but it generally + * involves making sure the user has an account with your system and + * is logged in, checking to see if that identity is hers to claim, + * and verifying with the user that she does consent to releasing that + * information to the party making the request. + * + * Examine the properties of the {@link Auth_OpenID_CheckIDRequest} + * object, and if and when you've come to a decision, form a response + * by calling {@link Auth_OpenID_CheckIDRequest::answer()}. + * + * Other types of requests relate to establishing associations between + * client and server and verifing the authenticity of previous + * communications. {@link Auth_OpenID_Server} contains all the logic + * and data necessary to respond to such requests; just pass it to + * {@link Auth_OpenID_Server::handleRequest()}. + * + * OpenID Extensions + * + * Do you want to provide other information for your users in addition + * to authentication? Version 1.2 of the OpenID protocol allows + * consumers to add extensions to their requests. For example, with + * sites using the Simple Registration + * Extension + * (http://openid.net/specs/openid-simple-registration-extension-1_0.html), + * a user can agree to have their nickname and e-mail address sent to + * a site when they sign up. + * + * Since extensions do not change the way OpenID authentication works, + * code to handle extension requests may be completely separate from + * the {@link Auth_OpenID_Request} class here. But you'll likely want + * data sent back by your extension to be signed. {@link + * Auth_OpenID_ServerResponse} provides methods with which you can add + * data to it which can be signed with the other data in the OpenID + * signature. + * + * For example: + * + * <pre> // when request is a checkid_* request + * $response = $request->answer(true); + * // this will a signed 'openid.sreg.timezone' parameter to the response + * response.addField('sreg', 'timezone', 'America/Los_Angeles')</pre> + * + * Stores + * + * The OpenID server needs to maintain state between requests in order + * to function. Its mechanism for doing this is called a store. The + * store interface is defined in Interface.php. Additionally, several + * concrete store implementations are provided, so that most sites + * won't need to implement a custom store. For a store backed by flat + * files on disk, see {@link Auth_OpenID_FileStore}. For stores based + * on MySQL, SQLite, or PostgreSQL, see the {@link + * Auth_OpenID_SQLStore} subclasses. + * + * Upgrading + * + * The keys by which a server looks up associations in its store have + * changed in version 1.2 of this library. If your store has entries + * created from version 1.0 code, you should empty it. + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +/** + * Required imports + */ +require_once "Auth/OpenID.php"; +require_once "Auth/OpenID/Association.php"; +require_once "Auth/OpenID/CryptUtil.php"; +require_once "Auth/OpenID/BigMath.php"; +require_once "Auth/OpenID/DiffieHellman.php"; +require_once "Auth/OpenID/KVForm.php"; +require_once "Auth/OpenID/TrustRoot.php"; +require_once "Auth/OpenID/ServerRequest.php"; +require_once "Auth/OpenID/Message.php"; +require_once "Auth/OpenID/Nonce.php"; + +define('AUTH_OPENID_HTTP_OK', 200); +define('AUTH_OPENID_HTTP_REDIRECT', 302); +define('AUTH_OPENID_HTTP_ERROR', 400); + +/** + * @access private + */ +global $_Auth_OpenID_Request_Modes; +$_Auth_OpenID_Request_Modes = array('checkid_setup', + 'checkid_immediate'); + +/** + * @access private + */ +define('Auth_OpenID_ENCODE_KVFORM', 'kfvorm'); + +/** + * @access private + */ +define('Auth_OpenID_ENCODE_URL', 'URL/redirect'); + +/** + * @access private + */ +define('Auth_OpenID_ENCODE_HTML_FORM', 'HTML form'); + +/** + * @access private + */ +function Auth_OpenID_isError($obj, $cls = 'Auth_OpenID_ServerError') +{ + return is_a($obj, $cls); +} + +/** + * An error class which gets instantiated and returned whenever an + * OpenID protocol error occurs. Be prepared to use this in place of + * an ordinary server response. + * + * @package OpenID + */ +class Auth_OpenID_ServerError { + /** + * @access private + */ + function Auth_OpenID_ServerError($message = null, $text = null, + $reference = null, $contact = null) + { + $this->message = $message; + $this->text = $text; + $this->contact = $contact; + $this->reference = $reference; + } + + function getReturnTo() + { + if ($this->message && + $this->message->hasKey(Auth_OpenID_OPENID_NS, 'return_to')) { + return $this->message->getArg(Auth_OpenID_OPENID_NS, + 'return_to'); + } else { + return null; + } + } + + /** + * Returns the return_to URL for the request which caused this + * error. + */ + function hasReturnTo() + { + return $this->getReturnTo() !== null; + } + + /** + * Encodes this error's response as a URL suitable for + * redirection. If the response has no return_to, another + * Auth_OpenID_ServerError is returned. + */ + function encodeToURL() + { + if (!$this->message) { + return null; + } + + $msg = $this->toMessage(); + return $msg->toURL($this->getReturnTo()); + } + + /** + * Encodes the response to key-value form. This is a + * machine-readable format used to respond to messages which came + * directly from the consumer and not through the user-agent. See + * the OpenID specification. + */ + function encodeToKVForm() + { + return Auth_OpenID_KVForm::fromArray( + array('mode' => 'error', + 'error' => $this->toString())); + } + + function toFormMarkup($form_tag_attrs=null) + { + $msg = $this->toMessage(); + return $msg->toFormMarkup($this->getReturnTo(), $form_tag_attrs); + } + + function toHTML($form_tag_attrs=null) + { + return Auth_OpenID::autoSubmitHTML( + $this->toFormMarkup($form_tag_attrs)); + } + + function toMessage() + { + // Generate a Message object for sending to the relying party, + // after encoding. + $namespace = $this->message->getOpenIDNamespace(); + $reply = new Auth_OpenID_Message($namespace); + $reply->setArg(Auth_OpenID_OPENID_NS, 'mode', 'error'); + $reply->setArg(Auth_OpenID_OPENID_NS, 'error', $this->toString()); + + if ($this->contact !== null) { + $reply->setArg(Auth_OpenID_OPENID_NS, 'contact', $this->contact); + } + + if ($this->reference !== null) { + $reply->setArg(Auth_OpenID_OPENID_NS, 'reference', + $this->reference); + } + + return $reply; + } + + /** + * Returns one of Auth_OpenID_ENCODE_URL, + * Auth_OpenID_ENCODE_KVFORM, or null, depending on the type of + * encoding expected for this error's payload. + */ + function whichEncoding() + { + global $_Auth_OpenID_Request_Modes; + + if ($this->hasReturnTo()) { + if ($this->message->isOpenID2() && + (strlen($this->encodeToURL()) > + Auth_OpenID_OPENID1_URL_LIMIT)) { + return Auth_OpenID_ENCODE_HTML_FORM; + } else { + return Auth_OpenID_ENCODE_URL; + } + } + + if (!$this->message) { + return null; + } + + $mode = $this->message->getArg(Auth_OpenID_OPENID_NS, + 'mode'); + + if ($mode) { + if (!in_array($mode, $_Auth_OpenID_Request_Modes)) { + return Auth_OpenID_ENCODE_KVFORM; + } + } + return null; + } + + /** + * Returns this error message. + */ + function toString() + { + if ($this->text) { + return $this->text; + } else { + return get_class($this) . " error"; + } + } +} + +/** + * Error returned by the server code when a return_to is absent from a + * request. + * + * @package OpenID + */ +class Auth_OpenID_NoReturnToError extends Auth_OpenID_ServerError { + function Auth_OpenID_NoReturnToError($message = null, + $text = "No return_to URL available") + { + parent::Auth_OpenID_ServerError($message, $text); + } + + function toString() + { + return "No return_to available"; + } +} + +/** + * An error indicating that the return_to URL is malformed. + * + * @package OpenID + */ +class Auth_OpenID_MalformedReturnURL extends Auth_OpenID_ServerError { + function Auth_OpenID_MalformedReturnURL($message, $return_to) + { + $this->return_to = $return_to; + parent::Auth_OpenID_ServerError($message, "malformed return_to URL"); + } +} + +/** + * This error is returned when the trust_root value is malformed. + * + * @package OpenID + */ +class Auth_OpenID_MalformedTrustRoot extends Auth_OpenID_ServerError { + function Auth_OpenID_MalformedTrustRoot($message = null, + $text = "Malformed trust root") + { + parent::Auth_OpenID_ServerError($message, $text); + } + + function toString() + { + return "Malformed trust root"; + } +} + +/** + * The base class for all server request classes. + * + * @package OpenID + */ +class Auth_OpenID_Request { + var $mode = null; +} + +/** + * A request to verify the validity of a previous response. + * + * @package OpenID + */ +class Auth_OpenID_CheckAuthRequest extends Auth_OpenID_Request { + var $mode = "check_authentication"; + var $invalidate_handle = null; + + function Auth_OpenID_CheckAuthRequest($assoc_handle, $signed, + $invalidate_handle = null) + { + $this->assoc_handle = $assoc_handle; + $this->signed = $signed; + if ($invalidate_handle !== null) { + $this->invalidate_handle = $invalidate_handle; + } + $this->namespace = Auth_OpenID_OPENID2_NS; + $this->message = null; + } + + static function fromMessage($message, $server=null) + { + $required_keys = array('assoc_handle', 'sig', 'signed'); + + foreach ($required_keys as $k) { + if (!$message->getArg(Auth_OpenID_OPENID_NS, $k)) { + return new Auth_OpenID_ServerError($message, + sprintf("%s request missing required parameter %s from \ + query", "check_authentication", $k)); + } + } + + $assoc_handle = $message->getArg(Auth_OpenID_OPENID_NS, 'assoc_handle'); + $sig = $message->getArg(Auth_OpenID_OPENID_NS, 'sig'); + + $signed_list = $message->getArg(Auth_OpenID_OPENID_NS, 'signed'); + $signed_list = explode(",", $signed_list); + + $signed = $message; + if ($signed->hasKey(Auth_OpenID_OPENID_NS, 'mode')) { + $signed->setArg(Auth_OpenID_OPENID_NS, 'mode', 'id_res'); + } + + $result = new Auth_OpenID_CheckAuthRequest($assoc_handle, $signed); + $result->message = $message; + $result->sig = $sig; + $result->invalidate_handle = $message->getArg(Auth_OpenID_OPENID_NS, + 'invalidate_handle'); + return $result; + } + + function answer($signatory) + { + $is_valid = $signatory->verify($this->assoc_handle, $this->signed); + + // Now invalidate that assoc_handle so it this checkAuth + // message cannot be replayed. + $signatory->invalidate($this->assoc_handle, true); + $response = new Auth_OpenID_ServerResponse($this); + + $response->fields->setArg(Auth_OpenID_OPENID_NS, + 'is_valid', + ($is_valid ? "true" : "false")); + + if ($this->invalidate_handle) { + $assoc = $signatory->getAssociation($this->invalidate_handle, + false); + if (!$assoc) { + $response->fields->setArg(Auth_OpenID_OPENID_NS, + 'invalidate_handle', + $this->invalidate_handle); + } + } + return $response; + } +} + +/** + * A class implementing plaintext server sessions. + * + * @package OpenID + */ +class Auth_OpenID_PlainTextServerSession { + /** + * An object that knows how to handle association requests with no + * session type. + */ + var $session_type = 'no-encryption'; + var $needs_math = false; + var $allowed_assoc_types = array('HMAC-SHA1', 'HMAC-SHA256'); + + static function fromMessage($unused_request) + { + return new Auth_OpenID_PlainTextServerSession(); + } + + function answer($secret) + { + return array('mac_key' => base64_encode($secret)); + } +} + +/** + * A class implementing DH-SHA1 server sessions. + * + * @package OpenID + */ +class Auth_OpenID_DiffieHellmanSHA1ServerSession { + /** + * An object that knows how to handle association requests with + * the Diffie-Hellman session type. + */ + + var $session_type = 'DH-SHA1'; + var $needs_math = true; + var $allowed_assoc_types = array('HMAC-SHA1'); + var $hash_func = 'Auth_OpenID_SHA1'; + + function Auth_OpenID_DiffieHellmanSHA1ServerSession($dh, $consumer_pubkey) + { + $this->dh = $dh; + $this->consumer_pubkey = $consumer_pubkey; + } + + static function getDH($message) + { + $dh_modulus = $message->getArg(Auth_OpenID_OPENID_NS, 'dh_modulus'); + $dh_gen = $message->getArg(Auth_OpenID_OPENID_NS, 'dh_gen'); + + if ((($dh_modulus === null) && ($dh_gen !== null)) || + (($dh_gen === null) && ($dh_modulus !== null))) { + + if ($dh_modulus === null) { + $missing = 'modulus'; + } else { + $missing = 'generator'; + } + + return new Auth_OpenID_ServerError($message, + 'If non-default modulus or generator is '. + 'supplied, both must be supplied. Missing '. + $missing); + } + + $lib = Auth_OpenID_getMathLib(); + + if ($dh_modulus || $dh_gen) { + $dh_modulus = $lib->base64ToLong($dh_modulus); + $dh_gen = $lib->base64ToLong($dh_gen); + if ($lib->cmp($dh_modulus, 0) == 0 || + $lib->cmp($dh_gen, 0) == 0) { + return new Auth_OpenID_ServerError( + $message, "Failed to parse dh_mod or dh_gen"); + } + $dh = new Auth_OpenID_DiffieHellman($dh_modulus, $dh_gen); + } else { + $dh = new Auth_OpenID_DiffieHellman(); + } + + $consumer_pubkey = $message->getArg(Auth_OpenID_OPENID_NS, + 'dh_consumer_public'); + if ($consumer_pubkey === null) { + return new Auth_OpenID_ServerError($message, + 'Public key for DH-SHA1 session '. + 'not found in query'); + } + + $consumer_pubkey = + $lib->base64ToLong($consumer_pubkey); + + if ($consumer_pubkey === false) { + return new Auth_OpenID_ServerError($message, + "dh_consumer_public is not base64"); + } + + return array($dh, $consumer_pubkey); + } + + static function fromMessage($message) + { + $result = Auth_OpenID_DiffieHellmanSHA1ServerSession::getDH($message); + + if (is_a($result, 'Auth_OpenID_ServerError')) { + return $result; + } else { + list($dh, $consumer_pubkey) = $result; + return new Auth_OpenID_DiffieHellmanSHA1ServerSession($dh, + $consumer_pubkey); + } + } + + function answer($secret) + { + $lib = Auth_OpenID_getMathLib(); + $mac_key = $this->dh->xorSecret($this->consumer_pubkey, $secret, + $this->hash_func); + return array( + 'dh_server_public' => + $lib->longToBase64($this->dh->public), + 'enc_mac_key' => base64_encode($mac_key)); + } +} + +/** + * A class implementing DH-SHA256 server sessions. + * + * @package OpenID + */ +class Auth_OpenID_DiffieHellmanSHA256ServerSession + extends Auth_OpenID_DiffieHellmanSHA1ServerSession { + + var $session_type = 'DH-SHA256'; + var $hash_func = 'Auth_OpenID_SHA256'; + var $allowed_assoc_types = array('HMAC-SHA256'); + + static function fromMessage($message) + { + $result = Auth_OpenID_DiffieHellmanSHA1ServerSession::getDH($message); + + if (is_a($result, 'Auth_OpenID_ServerError')) { + return $result; + } else { + list($dh, $consumer_pubkey) = $result; + return new Auth_OpenID_DiffieHellmanSHA256ServerSession($dh, + $consumer_pubkey); + } + } +} + +/** + * A request to associate with the server. + * + * @package OpenID + */ +class Auth_OpenID_AssociateRequest extends Auth_OpenID_Request { + var $mode = "associate"; + + static function getSessionClasses() + { + return array( + 'no-encryption' => 'Auth_OpenID_PlainTextServerSession', + 'DH-SHA1' => 'Auth_OpenID_DiffieHellmanSHA1ServerSession', + 'DH-SHA256' => 'Auth_OpenID_DiffieHellmanSHA256ServerSession'); + } + + function Auth_OpenID_AssociateRequest($session, $assoc_type) + { + $this->session = $session; + $this->namespace = Auth_OpenID_OPENID2_NS; + $this->assoc_type = $assoc_type; + } + + static function fromMessage($message, $server=null) + { + if ($message->isOpenID1()) { + $session_type = $message->getArg(Auth_OpenID_OPENID_NS, + 'session_type'); + + if ($session_type == 'no-encryption') { + // oidutil.log('Received OpenID 1 request with a no-encryption ' + // 'assocaition session type. Continuing anyway.') + } else if (!$session_type) { + $session_type = 'no-encryption'; + } + } else { + $session_type = $message->getArg(Auth_OpenID_OPENID_NS, + 'session_type'); + if ($session_type === null) { + return new Auth_OpenID_ServerError($message, + "session_type missing from request"); + } + } + + $session_class = Auth_OpenID::arrayGet( + Auth_OpenID_AssociateRequest::getSessionClasses(), + $session_type); + + if ($session_class === null) { + return new Auth_OpenID_ServerError($message, + "Unknown session type " . + $session_type); + } + + $session = call_user_func(array($session_class, 'fromMessage'), + $message); + if (is_a($session, 'Auth_OpenID_ServerError')) { + return $session; + } + + $assoc_type = $message->getArg(Auth_OpenID_OPENID_NS, + 'assoc_type', 'HMAC-SHA1'); + + if (!in_array($assoc_type, $session->allowed_assoc_types)) { + $fmt = "Session type %s does not support association type %s"; + return new Auth_OpenID_ServerError($message, + sprintf($fmt, $session_type, $assoc_type)); + } + + $obj = new Auth_OpenID_AssociateRequest($session, $assoc_type); + $obj->message = $message; + $obj->namespace = $message->getOpenIDNamespace(); + return $obj; + } + + function answer($assoc) + { + $response = new Auth_OpenID_ServerResponse($this); + $response->fields->updateArgs(Auth_OpenID_OPENID_NS, + array( + 'expires_in' => sprintf('%d', $assoc->getExpiresIn()), + 'assoc_type' => $this->assoc_type, + 'assoc_handle' => $assoc->handle)); + + $response->fields->updateArgs(Auth_OpenID_OPENID_NS, + $this->session->answer($assoc->secret)); + + if (! ($this->session->session_type == 'no-encryption' + && $this->message->isOpenID1())) { + $response->fields->setArg(Auth_OpenID_OPENID_NS, + 'session_type', + $this->session->session_type); + } + + return $response; + } + + function answerUnsupported($text_message, + $preferred_association_type=null, + $preferred_session_type=null) + { + if ($this->message->isOpenID1()) { + return new Auth_OpenID_ServerError($this->message); + } + + $response = new Auth_OpenID_ServerResponse($this); + $response->fields->setArg(Auth_OpenID_OPENID_NS, + 'error_code', 'unsupported-type'); + $response->fields->setArg(Auth_OpenID_OPENID_NS, + 'error', $text_message); + + if ($preferred_association_type) { + $response->fields->setArg(Auth_OpenID_OPENID_NS, + 'assoc_type', + $preferred_association_type); + } + + if ($preferred_session_type) { + $response->fields->setArg(Auth_OpenID_OPENID_NS, + 'session_type', + $preferred_session_type); + } + $response->code = AUTH_OPENID_HTTP_ERROR; + return $response; + } +} + +/** + * A request to confirm the identity of a user. + * + * @package OpenID + */ +class Auth_OpenID_CheckIDRequest extends Auth_OpenID_Request { + /** + * Return-to verification callback. Default is + * Auth_OpenID_verifyReturnTo from TrustRoot.php. + */ + var $verifyReturnTo = 'Auth_OpenID_verifyReturnTo'; + + /** + * The mode of this request. + */ + var $mode = "checkid_setup"; // or "checkid_immediate" + + /** + * Whether this request is for immediate mode. + */ + var $immediate = false; + + /** + * The trust_root value for this request. + */ + var $trust_root = null; + + /** + * The OpenID namespace for this request. + * deprecated since version 2.0.2 + */ + var $namespace; + + static function make($message, $identity, $return_to, $trust_root = null, + $immediate = false, $assoc_handle = null, $server = null) + { + if ($server === null) { + return new Auth_OpenID_ServerError($message, + "server must not be null"); + } + + if ($return_to && + !Auth_OpenID_TrustRoot::_parse($return_to)) { + return new Auth_OpenID_MalformedReturnURL($message, $return_to); + } + + $r = new Auth_OpenID_CheckIDRequest($identity, $return_to, + $trust_root, $immediate, + $assoc_handle, $server); + + $r->namespace = $message->getOpenIDNamespace(); + $r->message = $message; + + if (!$r->trustRootValid()) { + return new Auth_OpenID_UntrustedReturnURL($message, + $return_to, + $trust_root); + } else { + return $r; + } + } + + function Auth_OpenID_CheckIDRequest($identity, $return_to, + $trust_root = null, $immediate = false, + $assoc_handle = null, $server = null, + $claimed_id = null) + { + $this->namespace = Auth_OpenID_OPENID2_NS; + $this->assoc_handle = $assoc_handle; + $this->identity = $identity; + if ($claimed_id === null) { + $this->claimed_id = $identity; + } else { + $this->claimed_id = $claimed_id; + } + $this->return_to = $return_to; + $this->trust_root = $trust_root; + $this->server = $server; + + if ($immediate) { + $this->immediate = true; + $this->mode = "checkid_immediate"; + } else { + $this->immediate = false; + $this->mode = "checkid_setup"; + } + } + + function equals($other) + { + return ( + (is_a($other, 'Auth_OpenID_CheckIDRequest')) && + ($this->namespace == $other->namespace) && + ($this->assoc_handle == $other->assoc_handle) && + ($this->identity == $other->identity) && + ($this->claimed_id == $other->claimed_id) && + ($this->return_to == $other->return_to) && + ($this->trust_root == $other->trust_root)); + } + + /* + * Does the relying party publish the return_to URL for this + * response under the realm? It is up to the provider to set a + * policy for what kinds of realms should be allowed. This + * return_to URL verification reduces vulnerability to data-theft + * attacks based on open proxies, corss-site-scripting, or open + * redirectors. + * + * This check should only be performed after making sure that the + * return_to URL matches the realm. + * + * @return true if the realm publishes a document with the + * return_to URL listed, false if not or if discovery fails + */ + function returnToVerified() + { + $fetcher = Auth_Yadis_Yadis::getHTTPFetcher(); + return call_user_func_array($this->verifyReturnTo, + array($this->trust_root, $this->return_to, $fetcher)); + } + + static function fromMessage($message, $server) + { + $mode = $message->getArg(Auth_OpenID_OPENID_NS, 'mode'); + $immediate = null; + + if ($mode == "checkid_immediate") { + $immediate = true; + $mode = "checkid_immediate"; + } else { + $immediate = false; + $mode = "checkid_setup"; + } + + $return_to = $message->getArg(Auth_OpenID_OPENID_NS, + 'return_to'); + + if (($message->isOpenID1()) && + (!$return_to)) { + $fmt = "Missing required field 'return_to' from checkid request"; + return new Auth_OpenID_ServerError($message, $fmt); + } + + $identity = $message->getArg(Auth_OpenID_OPENID_NS, + 'identity'); + $claimed_id = $message->getArg(Auth_OpenID_OPENID_NS, 'claimed_id'); + if ($message->isOpenID1()) { + if ($identity === null) { + $s = "OpenID 1 message did not contain openid.identity"; + return new Auth_OpenID_ServerError($message, $s); + } + } else { + if ($identity && !$claimed_id) { + $s = "OpenID 2.0 message contained openid.identity but not " . + "claimed_id"; + return new Auth_OpenID_ServerError($message, $s); + } else if ($claimed_id && !$identity) { + $s = "OpenID 2.0 message contained openid.claimed_id " . + "but not identity"; + return new Auth_OpenID_ServerError($message, $s); + } + } + + // There's a case for making self.trust_root be a TrustRoot + // here. But if TrustRoot isn't currently part of the + // "public" API, I'm not sure it's worth doing. + if ($message->isOpenID1()) { + $trust_root_param = 'trust_root'; + } else { + $trust_root_param = 'realm'; + } + $trust_root = $message->getArg(Auth_OpenID_OPENID_NS, + $trust_root_param); + if (! $trust_root) { + $trust_root = $return_to; + } + + if (! $message->isOpenID1() && + ($return_to === null) && + ($trust_root === null)) { + return new Auth_OpenID_ServerError($message, + "openid.realm required when openid.return_to absent"); + } + + $assoc_handle = $message->getArg(Auth_OpenID_OPENID_NS, + 'assoc_handle'); + + $obj = Auth_OpenID_CheckIDRequest::make($message, + $identity, + $return_to, + $trust_root, + $immediate, + $assoc_handle, + $server); + + if (is_a($obj, 'Auth_OpenID_ServerError')) { + return $obj; + } + + $obj->claimed_id = $claimed_id; + + return $obj; + } + + function idSelect() + { + // Is the identifier to be selected by the IDP? + // So IDPs don't have to import the constant + return $this->identity == Auth_OpenID_IDENTIFIER_SELECT; + } + + function trustRootValid() + { + if (!$this->trust_root) { + return true; + } + + $tr = Auth_OpenID_TrustRoot::_parse($this->trust_root); + if ($tr === false) { + return new Auth_OpenID_MalformedTrustRoot($this->message, + $this->trust_root); + } + + if ($this->return_to !== null) { + return Auth_OpenID_TrustRoot::match($this->trust_root, + $this->return_to); + } else { + return true; + } + } + + /** + * Respond to this request. Return either an + * {@link Auth_OpenID_ServerResponse} or + * {@link Auth_OpenID_ServerError}. + * + * @param bool $allow Allow this user to claim this identity, and + * allow the consumer to have this information? + * + * @param string $server_url DEPRECATED. Passing $op_endpoint to + * the {@link Auth_OpenID_Server} constructor makes this optional. + * + * When an OpenID 1.x immediate mode request does not succeed, it + * gets back a URL where the request may be carried out in a + * not-so-immediate fashion. Pass my URL in here (the fully + * qualified address of this server's endpoint, i.e. + * http://example.com/server), and I will use it as a base for the + * URL for a new request. + * + * Optional for requests where {@link $immediate} is false or + * $allow is true. + * + * @param string $identity The OP-local identifier to answer with. + * Only for use when the relying party requested identifier + * selection. + * + * @param string $claimed_id The claimed identifier to answer + * with, for use with identifier selection in the case where the + * claimed identifier and the OP-local identifier differ, + * i.e. when the claimed_id uses delegation. + * + * If $identity is provided but this is not, $claimed_id will + * default to the value of $identity. When answering requests + * that did not ask for identifier selection, the response + * $claimed_id will default to that of the request. + * + * This parameter is new in OpenID 2.0. + * + * @return mixed + */ + function answer($allow, $server_url = null, $identity = null, + $claimed_id = null) + { + if (!$this->return_to) { + return new Auth_OpenID_NoReturnToError(); + } + + if (!$server_url) { + if ((!$this->message->isOpenID1()) && + (!$this->server->op_endpoint)) { + return new Auth_OpenID_ServerError(null, + "server should be constructed with op_endpoint to " . + "respond to OpenID 2.0 messages."); + } + + $server_url = $this->server->op_endpoint; + } + + if ($allow) { + $mode = 'id_res'; + } else if ($this->message->isOpenID1()) { + if ($this->immediate) { + $mode = 'id_res'; + } else { + $mode = 'cancel'; + } + } else { + if ($this->immediate) { + $mode = 'setup_needed'; + } else { + $mode = 'cancel'; + } + } + + if (!$this->trustRootValid()) { + return new Auth_OpenID_UntrustedReturnURL(null, + $this->return_to, + $this->trust_root); + } + + $response = new Auth_OpenID_ServerResponse($this); + + if ($claimed_id && + ($this->message->isOpenID1())) { + return new Auth_OpenID_ServerError(null, + "claimed_id is new in OpenID 2.0 and not " . + "available for ".$this->namespace); + } + + if ($identity && !$claimed_id) { + $claimed_id = $identity; + } + + if ($allow) { + + if ($this->identity == Auth_OpenID_IDENTIFIER_SELECT) { + if (!$identity) { + return new Auth_OpenID_ServerError(null, + "This request uses IdP-driven identifier selection. " . + "You must supply an identifier in the response."); + } + + $response_identity = $identity; + $response_claimed_id = $claimed_id; + + } else if ($this->identity) { + if ($identity && + ($this->identity != $identity)) { + $fmt = "Request was for %s, cannot reply with identity %s"; + return new Auth_OpenID_ServerError(null, + sprintf($fmt, $this->identity, $identity)); + } + + $response_identity = $this->identity; + $response_claimed_id = $this->claimed_id; + } else { + if ($identity) { + return new Auth_OpenID_ServerError(null, + "This request specified no identity and " . + "you supplied ".$identity); + } + + $response_identity = null; + } + + if (($this->message->isOpenID1()) && + ($response_identity === null)) { + return new Auth_OpenID_ServerError(null, + "Request was an OpenID 1 request, so response must " . + "include an identifier."); + } + + $response->fields->updateArgs(Auth_OpenID_OPENID_NS, + array('mode' => $mode, + 'return_to' => $this->return_to, + 'response_nonce' => Auth_OpenID_mkNonce())); + + if (!$this->message->isOpenID1()) { + $response->fields->setArg(Auth_OpenID_OPENID_NS, + 'op_endpoint', $server_url); + } + + if ($response_identity !== null) { + $response->fields->setArg( + Auth_OpenID_OPENID_NS, + 'identity', + $response_identity); + if ($this->message->isOpenID2()) { + $response->fields->setArg( + Auth_OpenID_OPENID_NS, + 'claimed_id', + $response_claimed_id); + } + } + + } else { + $response->fields->setArg(Auth_OpenID_OPENID_NS, + 'mode', $mode); + + if ($this->immediate) { + if (($this->message->isOpenID1()) && + (!$server_url)) { + return new Auth_OpenID_ServerError(null, + 'setup_url is required for $allow=false \ + in OpenID 1.x immediate mode.'); + } + + $setup_request = new Auth_OpenID_CheckIDRequest( + $this->identity, + $this->return_to, + $this->trust_root, + false, + $this->assoc_handle, + $this->server, + $this->claimed_id); + $setup_request->message = $this->message; + + $setup_url = $setup_request->encodeToURL($server_url); + + if ($setup_url === null) { + return new Auth_OpenID_NoReturnToError(); + } + + $response->fields->setArg(Auth_OpenID_OPENID_NS, + 'user_setup_url', + $setup_url); + } + } + + return $response; + } + + function encodeToURL($server_url) + { + if (!$this->return_to) { + return new Auth_OpenID_NoReturnToError(); + } + + // Imported from the alternate reality where these classes are + // used in both the client and server code, so Requests are + // Encodable too. That's right, code imported from alternate + // realities all for the love of you, id_res/user_setup_url. + + $q = array('mode' => $this->mode, + 'identity' => $this->identity, + 'claimed_id' => $this->claimed_id, + 'return_to' => $this->return_to); + + if ($this->trust_root) { + if ($this->message->isOpenID1()) { + $q['trust_root'] = $this->trust_root; + } else { + $q['realm'] = $this->trust_root; + } + } + + if ($this->assoc_handle) { + $q['assoc_handle'] = $this->assoc_handle; + } + + $response = new Auth_OpenID_Message( + $this->message->getOpenIDNamespace()); + $response->updateArgs(Auth_OpenID_OPENID_NS, $q); + return $response->toURL($server_url); + } + + function getCancelURL() + { + if (!$this->return_to) { + return new Auth_OpenID_NoReturnToError(); + } + + if ($this->immediate) { + return new Auth_OpenID_ServerError(null, + "Cancel is not an appropriate \ + response to immediate mode \ + requests."); + } + + $response = new Auth_OpenID_Message( + $this->message->getOpenIDNamespace()); + $response->setArg(Auth_OpenID_OPENID_NS, 'mode', 'cancel'); + return $response->toURL($this->return_to); + } +} + +/** + * This class encapsulates the response to an OpenID server request. + * + * @package OpenID + */ +class Auth_OpenID_ServerResponse { + + function Auth_OpenID_ServerResponse($request) + { + $this->request = $request; + $this->fields = new Auth_OpenID_Message($this->request->namespace); + } + + function whichEncoding() + { + global $_Auth_OpenID_Request_Modes; + + if (in_array($this->request->mode, $_Auth_OpenID_Request_Modes)) { + if ($this->fields->isOpenID2() && + (strlen($this->encodeToURL()) > + Auth_OpenID_OPENID1_URL_LIMIT)) { + return Auth_OpenID_ENCODE_HTML_FORM; + } else { + return Auth_OpenID_ENCODE_URL; + } + } else { + return Auth_OpenID_ENCODE_KVFORM; + } + } + + /* + * Returns the form markup for this response. + * + * @return str + */ + function toFormMarkup($form_tag_attrs=null) + { + return $this->fields->toFormMarkup($this->request->return_to, + $form_tag_attrs); + } + + /* + * Returns an HTML document containing the form markup for this + * response that autosubmits with javascript. + */ + function toHTML() + { + return Auth_OpenID::autoSubmitHTML($this->toFormMarkup()); + } + + /* + * Returns True if this response's encoding is ENCODE_HTML_FORM. + * Convenience method for server authors. + * + * @return bool + */ + function renderAsForm() + { + return $this->whichEncoding() == Auth_OpenID_ENCODE_HTML_FORM; + } + + + function encodeToURL() + { + return $this->fields->toURL($this->request->return_to); + } + + function addExtension($extension_response) + { + $extension_response->toMessage($this->fields); + } + + function needsSigning() + { + return $this->fields->getArg(Auth_OpenID_OPENID_NS, + 'mode') == 'id_res'; + } + + function encodeToKVForm() + { + return $this->fields->toKVForm(); + } +} + +/** + * A web-capable response object which you can use to generate a + * user-agent response. + * + * @package OpenID + */ +class Auth_OpenID_WebResponse { + var $code = AUTH_OPENID_HTTP_OK; + var $body = ""; + + function Auth_OpenID_WebResponse($code = null, $headers = null, + $body = null) + { + if ($code) { + $this->code = $code; + } + + if ($headers !== null) { + $this->headers = $headers; + } else { + $this->headers = array(); + } + + if ($body !== null) { + $this->body = $body; + } + } +} + +/** + * Responsible for the signature of query data and the verification of + * OpenID signature values. + * + * @package OpenID + */ +class Auth_OpenID_Signatory { + + // = 14 * 24 * 60 * 60; # 14 days, in seconds + var $SECRET_LIFETIME = 1209600; + + // keys have a bogus server URL in them because the filestore + // really does expect that key to be a URL. This seems a little + // silly for the server store, since I expect there to be only one + // server URL. + var $normal_key = 'http://localhost/|normal'; + var $dumb_key = 'http://localhost/|dumb'; + + /** + * Create a new signatory using a given store. + */ + function Auth_OpenID_Signatory($store) + { + // assert store is not None + $this->store = $store; + } + + /** + * Verify, using a given association handle, a signature with + * signed key-value pairs from an HTTP request. + */ + function verify($assoc_handle, $message) + { + $assoc = $this->getAssociation($assoc_handle, true); + if (!$assoc) { + // oidutil.log("failed to get assoc with handle %r to verify sig %r" + // % (assoc_handle, sig)) + return false; + } + + return $assoc->checkMessageSignature($message); + } + + /** + * Given a response, sign the fields in the response's 'signed' + * list, and insert the signature into the response. + */ + function sign($response) + { + $signed_response = $response; + $assoc_handle = $response->request->assoc_handle; + + if ($assoc_handle) { + // normal mode + $assoc = $this->getAssociation($assoc_handle, false, false); + if (!$assoc || ($assoc->getExpiresIn() <= 0)) { + // fall back to dumb mode + $signed_response->fields->setArg(Auth_OpenID_OPENID_NS, + 'invalidate_handle', $assoc_handle); + $assoc_type = ($assoc ? $assoc->assoc_type : 'HMAC-SHA1'); + + if ($assoc && ($assoc->getExpiresIn() <= 0)) { + $this->invalidate($assoc_handle, false); + } + + $assoc = $this->createAssociation(true, $assoc_type); + } + } else { + // dumb mode. + $assoc = $this->createAssociation(true); + } + + $signed_response->fields = $assoc->signMessage( + $signed_response->fields); + return $signed_response; + } + + /** + * Make a new association. + */ + function createAssociation($dumb = true, $assoc_type = 'HMAC-SHA1') + { + $secret = Auth_OpenID_CryptUtil::getBytes( + Auth_OpenID_getSecretSize($assoc_type)); + + $uniq = base64_encode(Auth_OpenID_CryptUtil::getBytes(4)); + $handle = sprintf('{%s}{%x}{%s}', $assoc_type, intval(time()), $uniq); + + $assoc = Auth_OpenID_Association::fromExpiresIn( + $this->SECRET_LIFETIME, $handle, $secret, $assoc_type); + + if ($dumb) { + $key = $this->dumb_key; + } else { + $key = $this->normal_key; + } + + $this->store->storeAssociation($key, $assoc); + return $assoc; + } + + /** + * Given an association handle, get the association from the + * store, or return a ServerError or null if something goes wrong. + */ + function getAssociation($assoc_handle, $dumb, $check_expiration=true) + { + if ($assoc_handle === null) { + return new Auth_OpenID_ServerError(null, + "assoc_handle must not be null"); + } + + if ($dumb) { + $key = $this->dumb_key; + } else { + $key = $this->normal_key; + } + + $assoc = $this->store->getAssociation($key, $assoc_handle); + + if (($assoc !== null) && ($assoc->getExpiresIn() <= 0)) { + if ($check_expiration) { + $this->store->removeAssociation($key, $assoc_handle); + $assoc = null; + } + } + + return $assoc; + } + + /** + * Invalidate a given association handle. + */ + function invalidate($assoc_handle, $dumb) + { + if ($dumb) { + $key = $this->dumb_key; + } else { + $key = $this->normal_key; + } + $this->store->removeAssociation($key, $assoc_handle); + } +} + +/** + * Encode an {@link Auth_OpenID_ServerResponse} to an + * {@link Auth_OpenID_WebResponse}. + * + * @package OpenID + */ +class Auth_OpenID_Encoder { + + var $responseFactory = 'Auth_OpenID_WebResponse'; + + /** + * Encode an {@link Auth_OpenID_ServerResponse} and return an + * {@link Auth_OpenID_WebResponse}. + */ + function encode($response) + { + $cls = $this->responseFactory; + + $encode_as = $response->whichEncoding(); + if ($encode_as == Auth_OpenID_ENCODE_KVFORM) { + $wr = new $cls(null, null, $response->encodeToKVForm()); + if (is_a($response, 'Auth_OpenID_ServerError')) { + $wr->code = AUTH_OPENID_HTTP_ERROR; + } + } else if ($encode_as == Auth_OpenID_ENCODE_URL) { + $location = $response->encodeToURL(); + $wr = new $cls(AUTH_OPENID_HTTP_REDIRECT, + array('location' => $location)); + } else if ($encode_as == Auth_OpenID_ENCODE_HTML_FORM) { + $wr = new $cls(AUTH_OPENID_HTTP_OK, array(), + $response->toHTML()); + } else { + return new Auth_OpenID_EncodingError($response); + } + /* Allow the response to carry a custom error code (ex: for Association errors) */ + if(isset($response->code)) { + $wr->code = $response->code; + } + return $wr; + } +} + +/** + * An encoder which also takes care of signing fields when required. + * + * @package OpenID + */ +class Auth_OpenID_SigningEncoder extends Auth_OpenID_Encoder { + + function Auth_OpenID_SigningEncoder($signatory) + { + $this->signatory = $signatory; + } + + /** + * Sign an {@link Auth_OpenID_ServerResponse} and return an + * {@link Auth_OpenID_WebResponse}. + */ + function encode($response) + { + // the isinstance is a bit of a kludge... it means there isn't + // really an adapter to make the interfaces quite match. + if (!is_a($response, 'Auth_OpenID_ServerError') && + $response->needsSigning()) { + + if (!$this->signatory) { + return new Auth_OpenID_ServerError(null, + "Must have a store to sign request"); + } + + if ($response->fields->hasKey(Auth_OpenID_OPENID_NS, 'sig')) { + return new Auth_OpenID_AlreadySigned($response); + } + $response = $this->signatory->sign($response); + } + + return parent::encode($response); + } +} + +/** + * Decode an incoming query into an Auth_OpenID_Request. + * + * @package OpenID + */ +class Auth_OpenID_Decoder { + + function Auth_OpenID_Decoder($server) + { + $this->server = $server; + + $this->handlers = array( + 'checkid_setup' => 'Auth_OpenID_CheckIDRequest', + 'checkid_immediate' => 'Auth_OpenID_CheckIDRequest', + 'check_authentication' => 'Auth_OpenID_CheckAuthRequest', + 'associate' => 'Auth_OpenID_AssociateRequest' + ); + } + + /** + * Given an HTTP query in an array (key-value pairs), decode it + * into an Auth_OpenID_Request object. + */ + function decode($query) + { + if (!$query) { + return null; + } + + $message = Auth_OpenID_Message::fromPostArgs($query); + + if ($message === null) { + /* + * It's useful to have a Message attached to a + * ProtocolError, so we override the bad ns value to build + * a Message out of it. Kinda kludgy, since it's made of + * lies, but the parts that aren't lies are more useful + * than a 'None'. + */ + $old_ns = $query['openid.ns']; + + $query['openid.ns'] = Auth_OpenID_OPENID2_NS; + $message = Auth_OpenID_Message::fromPostArgs($query); + return new Auth_OpenID_ServerError( + $message, + sprintf("Invalid OpenID namespace URI: %s", $old_ns)); + } + + $mode = $message->getArg(Auth_OpenID_OPENID_NS, 'mode'); + if (!$mode) { + return new Auth_OpenID_ServerError($message, + "No mode value in message"); + } + + if (Auth_OpenID::isFailure($mode)) { + return new Auth_OpenID_ServerError($message, + $mode->message); + } + + $handlerCls = Auth_OpenID::arrayGet($this->handlers, $mode, + $this->defaultDecoder($message)); + + if (!is_a($handlerCls, 'Auth_OpenID_ServerError')) { + return call_user_func_array(array($handlerCls, 'fromMessage'), + array($message, $this->server)); + } else { + return $handlerCls; + } + } + + function defaultDecoder($message) + { + $mode = $message->getArg(Auth_OpenID_OPENID_NS, 'mode'); + + if (Auth_OpenID::isFailure($mode)) { + return new Auth_OpenID_ServerError($message, + $mode->message); + } + + return new Auth_OpenID_ServerError($message, + sprintf("Unrecognized OpenID mode %s", $mode)); + } +} + +/** + * An error that indicates an encoding problem occurred. + * + * @package OpenID + */ +class Auth_OpenID_EncodingError { + function Auth_OpenID_EncodingError($response) + { + $this->response = $response; + } +} + +/** + * An error that indicates that a response was already signed. + * + * @package OpenID + */ +class Auth_OpenID_AlreadySigned extends Auth_OpenID_EncodingError { + // This response is already signed. +} + +/** + * An error that indicates that the given return_to is not under the + * given trust_root. + * + * @package OpenID + */ +class Auth_OpenID_UntrustedReturnURL extends Auth_OpenID_ServerError { + function Auth_OpenID_UntrustedReturnURL($message, $return_to, + $trust_root) + { + parent::Auth_OpenID_ServerError($message, "Untrusted return_to URL"); + $this->return_to = $return_to; + $this->trust_root = $trust_root; + } + + function toString() + { + return sprintf("return_to %s not under trust_root %s", + $this->return_to, $this->trust_root); + } +} + +/** + * I handle requests for an OpenID server. + * + * Some types of requests (those which are not checkid requests) may + * be handed to my {@link handleRequest} method, and I will take care + * of it and return a response. + * + * For your convenience, I also provide an interface to {@link + * Auth_OpenID_Decoder::decode()} and {@link + * Auth_OpenID_SigningEncoder::encode()} through my methods {@link + * decodeRequest} and {@link encodeResponse}. + * + * All my state is encapsulated in an {@link Auth_OpenID_OpenIDStore}. + * + * Example: + * + * <pre> $oserver = new Auth_OpenID_Server(Auth_OpenID_FileStore($data_path), + * "http://example.com/op"); + * $request = $oserver->decodeRequest(); + * if (in_array($request->mode, array('checkid_immediate', + * 'checkid_setup'))) { + * if ($app->isAuthorized($request->identity, $request->trust_root)) { + * $response = $request->answer(true); + * } else if ($request->immediate) { + * $response = $request->answer(false); + * } else { + * $app->showDecidePage($request); + * return; + * } + * } else { + * $response = $oserver->handleRequest($request); + * } + * + * $webresponse = $oserver->encode($response);</pre> + * + * @package OpenID + */ +class Auth_OpenID_Server { + function Auth_OpenID_Server($store, $op_endpoint=null) + { + $this->store = $store; + $this->signatory = new Auth_OpenID_Signatory($this->store); + $this->encoder = new Auth_OpenID_SigningEncoder($this->signatory); + $this->decoder = new Auth_OpenID_Decoder($this); + $this->op_endpoint = $op_endpoint; + $this->negotiator = Auth_OpenID_getDefaultNegotiator(); + } + + /** + * Handle a request. Given an {@link Auth_OpenID_Request} object, + * call the appropriate {@link Auth_OpenID_Server} method to + * process the request and generate a response. + * + * @param Auth_OpenID_Request $request An {@link Auth_OpenID_Request} + * returned by {@link Auth_OpenID_Server::decodeRequest()}. + * + * @return Auth_OpenID_ServerResponse $response A response object + * capable of generating a user-agent reply. + */ + function handleRequest($request) + { + if (method_exists($this, "openid_" . $request->mode)) { + $handler = array($this, "openid_" . $request->mode); + return call_user_func($handler, $request); + } + return null; + } + + /** + * The callback for 'check_authentication' messages. + */ + function openid_check_authentication($request) + { + return $request->answer($this->signatory); + } + + /** + * The callback for 'associate' messages. + */ + function openid_associate($request) + { + $assoc_type = $request->assoc_type; + $session_type = $request->session->session_type; + if ($this->negotiator->isAllowed($assoc_type, $session_type)) { + $assoc = $this->signatory->createAssociation(false, + $assoc_type); + return $request->answer($assoc); + } else { + $message = sprintf('Association type %s is not supported with '. + 'session type %s', $assoc_type, $session_type); + list($preferred_assoc_type, $preferred_session_type) = + $this->negotiator->getAllowedType(); + return $request->answerUnsupported($message, + $preferred_assoc_type, + $preferred_session_type); + } + } + + /** + * Encodes as response in the appropriate format suitable for + * sending to the user agent. + */ + function encodeResponse($response) + { + return $this->encoder->encode($response); + } + + /** + * Decodes a query args array into the appropriate + * {@link Auth_OpenID_Request} object. + */ + function decodeRequest($query=null) + { + if ($query === null) { + $query = Auth_OpenID::getQuery(); + } + + return $this->decoder->decode($query); + } +} + + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/ServerRequest.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/ServerRequest.php new file mode 100644 index 000000000..69222a5e0 --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/ServerRequest.php @@ -0,0 +1,36 @@ +<?php +/** + * OpenID Server Request + * + * @see Auth_OpenID_Server + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +/** + * Imports + */ +require_once "Auth/OpenID.php"; + +/** + * Object that holds the state of a request to the OpenID server + * + * With accessor functions to get at the internal request data. + * + * @see Auth_OpenID_Server + * @package OpenID + */ +class Auth_OpenID_ServerRequest { + function Auth_OpenID_ServerRequest() + { + $this->mode = null; + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/TrustRoot.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/TrustRoot.php new file mode 100644 index 000000000..0f53958ed --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/TrustRoot.php @@ -0,0 +1,461 @@ +<?php +/** + * Functions for dealing with OpenID trust roots + * + * PHP versions 4 and 5 + * + * LICENSE: See the COPYING file included in this distribution. + * + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +require_once 'Auth/OpenID/Discover.php'; + +/** + * A regular expression that matches a domain ending in a top-level domains. + * Used in checking trust roots for sanity. + * + * @access private + */ +define('Auth_OpenID___TLDs', + '/\.(ac|ad|ae|aero|af|ag|ai|al|am|an|ao|aq|ar|arpa|as|asia' . + '|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|bi|biz|bj|bm|bn|bo|br' . + '|bs|bt|bv|bw|by|bz|ca|cat|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co' . + '|com|coop|cr|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg' . + '|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl' . + '|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie' . + '|il|im|in|info|int|io|iq|ir|is|it|je|jm|jo|jobs|jp|ke|kg|kh' . + '|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly' . + '|ma|mc|md|me|mg|mh|mil|mk|ml|mm|mn|mo|mobi|mp|mq|mr|ms|mt' . + '|mu|museum|mv|mw|mx|my|mz|na|name|nc|ne|net|nf|ng|ni|nl|no' . + '|np|nr|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|pro|ps|pt' . + '|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl' . + '|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tel|tf|tg|th|tj|tk|tl|tm' . + '|tn|to|tp|tr|travel|tt|tv|tw|tz|ua|ug|uk|us|uy|uz|va|vc|ve' . + '|vg|vi|vn|vu|wf|ws|xn--0zwm56d|xn--11b5bs3a9aj6g' . + '|xn--80akhbyknj4f|xn--9t4b11yi5a|xn--deba0ad|xn--g6w251d' . + '|xn--hgbk6aj7f53bba|xn--hlcj6aya9esc7a|xn--jxalpdlp' . + '|xn--kgbechtv|xn--zckzah|ye|yt|yu|za|zm|zw)\.?$/'); + +define('Auth_OpenID___HostSegmentRe', + "/^(?:[-a-zA-Z0-9!$&'\\(\\)\\*+,;=._~]|%[a-zA-Z0-9]{2})*$/"); + +/** + * A wrapper for trust-root related functions + */ +class Auth_OpenID_TrustRoot { + /* + * Return a discovery URL for this realm. + * + * Return null if the realm could not be parsed or was not valid. + * + * @param return_to The relying party return URL of the OpenID + * authentication request + * + * @return The URL upon which relying party discovery should be + * run in order to verify the return_to URL + */ + static function buildDiscoveryURL($realm) + { + $parsed = Auth_OpenID_TrustRoot::_parse($realm); + + if ($parsed === false) { + return false; + } + + if ($parsed['wildcard']) { + // Use "www." in place of the star + if ($parsed['host'][0] != '.') { + return false; + } + + $www_domain = 'www' . $parsed['host']; + + return sprintf('%s://%s%s', $parsed['scheme'], + $www_domain, $parsed['path']); + } else { + return $parsed['unparsed']; + } + } + + /** + * Parse a URL into its trust_root parts. + * + * @static + * + * @access private + * + * @param string $trust_root The url to parse + * + * @return mixed $parsed Either an associative array of trust root + * parts or false if parsing failed. + */ + static function _parse($trust_root) + { + $trust_root = Auth_OpenID_urinorm($trust_root); + if ($trust_root === null) { + return false; + } + + if (preg_match("/:\/\/[^:]+(:\d+){2,}(\/|$)/", $trust_root)) { + return false; + } + + $parts = @parse_url($trust_root); + if ($parts === false) { + return false; + } + + $required_parts = array('scheme', 'host'); + $forbidden_parts = array('user', 'pass', 'fragment'); + $keys = array_keys($parts); + if (array_intersect($keys, $required_parts) != $required_parts) { + return false; + } + + if (array_intersect($keys, $forbidden_parts) != array()) { + return false; + } + + if (!preg_match(Auth_OpenID___HostSegmentRe, $parts['host'])) { + return false; + } + + $scheme = strtolower($parts['scheme']); + $allowed_schemes = array('http', 'https'); + if (!in_array($scheme, $allowed_schemes)) { + return false; + } + $parts['scheme'] = $scheme; + + $host = strtolower($parts['host']); + $hostparts = explode('*', $host); + switch (count($hostparts)) { + case 1: + $parts['wildcard'] = false; + break; + case 2: + if ($hostparts[0] || + ($hostparts[1] && substr($hostparts[1], 0, 1) != '.')) { + return false; + } + $host = $hostparts[1]; + $parts['wildcard'] = true; + break; + default: + return false; + } + if (strpos($host, ':') !== false) { + return false; + } + + $parts['host'] = $host; + + if (isset($parts['path'])) { + $path = strtolower($parts['path']); + if (substr($path, 0, 1) != '/') { + return false; + } + } else { + $path = '/'; + } + + $parts['path'] = $path; + if (!isset($parts['port'])) { + $parts['port'] = false; + } + + + $parts['unparsed'] = $trust_root; + + return $parts; + } + + /** + * Is this trust root sane? + * + * A trust root is sane if it is syntactically valid and it has a + * reasonable domain name. Specifically, the domain name must be + * more than one level below a standard TLD or more than two + * levels below a two-letter tld. + * + * For example, '*.com' is not a sane trust root, but '*.foo.com' + * is. '*.co.uk' is not sane, but '*.bbc.co.uk' is. + * + * This check is not always correct, but it attempts to err on the + * side of marking sane trust roots insane instead of marking + * insane trust roots sane. For example, 'kink.fm' is marked as + * insane even though it "should" (for some meaning of should) be + * marked sane. + * + * This function should be used when creating OpenID servers to + * alert the users of the server when a consumer attempts to get + * the user to accept a suspicious trust root. + * + * @static + * @param string $trust_root The trust root to check + * @return bool $sanity Whether the trust root looks OK + */ + static function isSane($trust_root) + { + $parts = Auth_OpenID_TrustRoot::_parse($trust_root); + if ($parts === false) { + return false; + } + + // Localhost is a special case + if ($parts['host'] == 'localhost') { + return true; + } + + $host_parts = explode('.', $parts['host']); + if ($parts['wildcard']) { + // Remove the empty string from the beginning of the array + array_shift($host_parts); + } + + if ($host_parts && !$host_parts[count($host_parts) - 1]) { + array_pop($host_parts); + } + + if (!$host_parts) { + return false; + } + + // Don't allow adjacent dots + if (in_array('', $host_parts, true)) { + return false; + } + + // Get the top-level domain of the host. If it is not a valid TLD, + // it's not sane. + preg_match(Auth_OpenID___TLDs, $parts['host'], $matches); + if (!$matches) { + return false; + } + $tld = $matches[1]; + + if (count($host_parts) == 1) { + return false; + } + + if ($parts['wildcard']) { + // It's a 2-letter tld with a short second to last segment + // so there needs to be more than two segments specified + // (e.g. *.co.uk is insane) + $second_level = $host_parts[count($host_parts) - 2]; + if (strlen($tld) == 2 && strlen($second_level) <= 3) { + return count($host_parts) > 2; + } + } + + return true; + } + + /** + * Does this URL match the given trust root? + * + * Return whether the URL falls under the given trust root. This + * does not check whether the trust root is sane. If the URL or + * trust root do not parse, this function will return false. + * + * @param string $trust_root The trust root to match against + * + * @param string $url The URL to check + * + * @return bool $matches Whether the URL matches against the + * trust root + */ + static function match($trust_root, $url) + { + $trust_root_parsed = Auth_OpenID_TrustRoot::_parse($trust_root); + $url_parsed = Auth_OpenID_TrustRoot::_parse($url); + if (!$trust_root_parsed || !$url_parsed) { + return false; + } + + // Check hosts matching + if ($url_parsed['wildcard']) { + return false; + } + if ($trust_root_parsed['wildcard']) { + $host_tail = $trust_root_parsed['host']; + $host = $url_parsed['host']; + if ($host_tail && + substr($host, -(strlen($host_tail))) != $host_tail && + substr($host_tail, 1) != $host) { + return false; + } + } else { + if ($trust_root_parsed['host'] != $url_parsed['host']) { + return false; + } + } + + // Check path and query matching + $base_path = $trust_root_parsed['path']; + $path = $url_parsed['path']; + if (!isset($trust_root_parsed['query'])) { + if ($base_path != $path) { + if (substr($path, 0, strlen($base_path)) != $base_path) { + return false; + } + if (substr($base_path, strlen($base_path) - 1, 1) != '/' && + substr($path, strlen($base_path), 1) != '/') { + return false; + } + } + } else { + $base_query = $trust_root_parsed['query']; + $query = @$url_parsed['query']; + $qplus = substr($query, 0, strlen($base_query) + 1); + $bqplus = $base_query . '&'; + if ($base_path != $path || + ($base_query != $query && $qplus != $bqplus)) { + return false; + } + } + + // The port and scheme need to match exactly + return ($trust_root_parsed['scheme'] == $url_parsed['scheme'] && + $url_parsed['port'] === $trust_root_parsed['port']); + } +} + +/* + * If the endpoint is a relying party OpenID return_to endpoint, + * return the endpoint URL. Otherwise, return None. + * + * This function is intended to be used as a filter for the Yadis + * filtering interface. + * + * @see: C{L{openid.yadis.services}} + * @see: C{L{openid.yadis.filters}} + * + * @param endpoint: An XRDS BasicServiceEndpoint, as returned by + * performing Yadis dicovery. + * + * @returns: The endpoint URL or None if the endpoint is not a + * relying party endpoint. + */ +function filter_extractReturnURL($endpoint) +{ + if ($endpoint->matchTypes(array(Auth_OpenID_RP_RETURN_TO_URL_TYPE))) { + return $endpoint; + } else { + return null; + } +} + +function &Auth_OpenID_extractReturnURL(&$endpoint_list) +{ + $result = array(); + + foreach ($endpoint_list as $endpoint) { + if (filter_extractReturnURL($endpoint)) { + $result[] = $endpoint; + } + } + + return $result; +} + +/* + * Is the return_to URL under one of the supplied allowed return_to + * URLs? + */ +function Auth_OpenID_returnToMatches($allowed_return_to_urls, $return_to) +{ + foreach ($allowed_return_to_urls as $allowed_return_to) { + // A return_to pattern works the same as a realm, except that + // it's not allowed to use a wildcard. We'll model this by + // parsing it as a realm, and not trying to match it if it has + // a wildcard. + + $return_realm = Auth_OpenID_TrustRoot::_parse($allowed_return_to); + if (// Parses as a trust root + ($return_realm !== false) && + // Does not have a wildcard + (!$return_realm['wildcard']) && + // Matches the return_to that we passed in with it + (Auth_OpenID_TrustRoot::match($allowed_return_to, $return_to))) { + return true; + } + } + + // No URL in the list matched + return false; +} + +/* + * Given a relying party discovery URL return a list of return_to + * URLs. + */ +function Auth_OpenID_getAllowedReturnURLs($relying_party_url, $fetcher, + $discover_function=null) +{ + if ($discover_function === null) { + $discover_function = array('Auth_Yadis_Yadis', 'discover'); + } + + $xrds_parse_cb = array('Auth_OpenID_ServiceEndpoint', 'consumerFromXRDS'); + + list($rp_url_after_redirects, $endpoints) = + Auth_Yadis_getServiceEndpoints($relying_party_url, $xrds_parse_cb, + $discover_function, $fetcher); + + if ($rp_url_after_redirects != $relying_party_url) { + // Verification caused a redirect + return false; + } + + call_user_func_array($discover_function, + array($relying_party_url, $fetcher)); + + $return_to_urls = array(); + $matching_endpoints = Auth_OpenID_extractReturnURL($endpoints); + + foreach ($matching_endpoints as $e) { + $return_to_urls[] = $e->server_url; + } + + return $return_to_urls; +} + +/* + * Verify that a return_to URL is valid for the given realm. + * + * This function builds a discovery URL, performs Yadis discovery on + * it, makes sure that the URL does not redirect, parses out the + * return_to URLs, and finally checks to see if the current return_to + * URL matches the return_to. + * + * @return true if the return_to URL is valid for the realm + */ +function Auth_OpenID_verifyReturnTo($realm_str, $return_to, $fetcher, + $_vrfy='Auth_OpenID_getAllowedReturnURLs') +{ + $disco_url = Auth_OpenID_TrustRoot::buildDiscoveryURL($realm_str); + + if ($disco_url === false) { + return false; + } + + $allowable_urls = call_user_func_array($_vrfy, + array($disco_url, $fetcher)); + + // The realm_str could not be parsed. + if ($allowable_urls === false) { + return false; + } + + if (Auth_OpenID_returnToMatches($allowable_urls, $return_to)) { + return true; + } else { + return false; + } +} + diff --git a/mod/openid_api/vendors/php-openid/Auth/OpenID/URINorm.php b/mod/openid_api/vendors/php-openid/Auth/OpenID/URINorm.php new file mode 100644 index 000000000..c051b550a --- /dev/null +++ b/mod/openid_api/vendors/php-openid/Auth/OpenID/URINorm.php @@ -0,0 +1,249 @@ +<?php + +/** + * URI normalization routines. + * + * @package OpenID + * @author JanRain, Inc. <openid@janrain.com> + * @copyright 2005-2008 Janrain, Inc. + * @license http://www.apache.org/licenses/LICENSE-2.0 Apache + */ + +require_once 'Auth/Yadis/Misc.php'; + +// from appendix B of rfc 3986 (http://www.ietf.org/rfc/rfc3986.txt) +function Auth_OpenID_getURIPattern() +{ + return '&^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?&'; +} + +function Auth_OpenID_getAuthorityPattern() +{ + return '/^([^@]*@)?([^:]*)(:.*)?/'; +} + +function Auth_OpenID_getEncodedPattern() +{ + return '/%([0-9A-Fa-f]{2})/'; +} + +# gen-delims = ":" / "/" / "?" / "#" / "[" / "]" / "@" +# +# sub-delims = "!" / "$" / "&" / "'" / "(" / ")" +# / "*" / "+" / "," / ";" / "=" +# +# unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~" +function Auth_OpenID_getURLIllegalCharRE() +{ + return "/([^-A-Za-z0-9:\/\?#\[\]@\!\$&'\(\)\*\+,;=\._~\%])/"; +} + +function Auth_OpenID_getUnreserved() +{ + $_unreserved = array(); + for ($i = 0; $i < 256; $i++) { + $_unreserved[$i] = false; + } + + for ($i = ord('A'); $i <= ord('Z'); $i++) { + $_unreserved[$i] = true; + } + + for ($i = ord('0'); $i <= ord('9'); $i++) { + $_unreserved[$i] = true; + } + + for ($i = ord('a'); $i <= ord('z'); $i++) { + $_unreserved[$i] = true; + } + + $_unreserved[ord('-')] = true; + $_unreserved[ord('.')] = true; + $_unreserved[ord('_')] = true; + $_unreserved[ord('~')] = true; + + return $_unreserved; +} + +function Auth_OpenID_getEscapeRE() +{ + $parts = array(); + foreach (array_merge(Auth_Yadis_getUCSChars(), + Auth_Yadis_getIPrivateChars()) as $pair) { + list($m, $n) = $pair; + $parts[] = sprintf("%s-%s", chr($m), chr($n)); + } + + return sprintf('[%s]', implode('', $parts)); +} + +function Auth_OpenID_pct_encoded_replace_unreserved($mo) +{ + $_unreserved = Auth_OpenID_getUnreserved(); + + $i = intval($mo[1], 16); + if ($_unreserved[$i]) { + return chr($i); + } else { + return strtoupper($mo[0]); + } + + return $mo[0]; +} + +function Auth_OpenID_pct_encoded_replace($mo) +{ + return chr(intval($mo[1], 16)); +} + +function Auth_OpenID_remove_dot_segments($path) +{ + $result_segments = array(); + + while ($path) { + if (Auth_Yadis_startswith($path, '../')) { + $path = substr($path, 3); + } else if (Auth_Yadis_startswith($path, './')) { + $path = substr($path, 2); + } else if (Auth_Yadis_startswith($path, '/./')) { + $path = substr($path, 2); + } else if ($path == '/.') { + $path = '/'; + } else if (Auth_Yadis_startswith($path, '/../')) { + $path = substr($path, 3); + if ($result_segments) { + array_pop($result_segments); + } + } else if ($path == '/..') { + $path = '/'; + if ($result_segments) { + array_pop($result_segments); + } + } else if (($path == '..') || + ($path == '.')) { + $path = ''; + } else { + $i = 0; + if ($path[0] == '/') { + $i = 1; + } + $i = strpos($path, '/', $i); + if ($i === false) { + $i = strlen($path); + } + $result_segments[] = substr($path, 0, $i); + $path = substr($path, $i); + } + } + + return implode('', $result_segments); +} + +function Auth_OpenID_urinorm($uri) +{ + $uri_matches = array(); + preg_match(Auth_OpenID_getURIPattern(), $uri, $uri_matches); + + if (count($uri_matches) < 9) { + for ($i = count($uri_matches); $i <= 9; $i++) { + $uri_matches[] = ''; + } + } + + $illegal_matches = array(); + preg_match(Auth_OpenID_getURLIllegalCharRE(), + $uri, $illegal_matches); + if ($illegal_matches) { + return null; + } + + $scheme = $uri_matches[2]; + if ($scheme) { + $scheme = strtolower($scheme); + } + + $scheme = $uri_matches[2]; + if ($scheme === '') { + // No scheme specified + return null; + } + + $scheme = strtolower($scheme); + if (!in_array($scheme, array('http', 'https'))) { + // Not an absolute HTTP or HTTPS URI + return null; + } + + $authority = $uri_matches[4]; + if ($authority === '') { + // Not an absolute URI + return null; + } + + $authority_matches = array(); + preg_match(Auth_OpenID_getAuthorityPattern(), + $authority, $authority_matches); + if (count($authority_matches) === 0) { + // URI does not have a valid authority + return null; + } + + if (count($authority_matches) < 4) { + for ($i = count($authority_matches); $i <= 4; $i++) { + $authority_matches[] = ''; + } + } + + list($_whole, $userinfo, $host, $port) = $authority_matches; + + if ($userinfo === null) { + $userinfo = ''; + } + + if (strpos($host, '%') !== -1) { + $host = strtolower($host); + $host = preg_replace_callback( + Auth_OpenID_getEncodedPattern(), + 'Auth_OpenID_pct_encoded_replace', $host); + // NO IDNA. + // $host = unicode($host, 'utf-8').encode('idna'); + } else { + $host = strtolower($host); + } + + if ($port) { + if (($port == ':') || + ($scheme == 'http' && $port == ':80') || + ($scheme == 'https' && $port == ':443')) { + $port = ''; + } + } else { + $port = ''; + } + + $authority = $userinfo . $host . $port; + + $path = $uri_matches[5]; + $path = preg_replace_callback( + Auth_OpenID_getEncodedPattern(), + 'Auth_OpenID_pct_encoded_replace_unreserved', $path); + + $path = Auth_OpenID_remove_dot_segments($path); + if (!$path) { + $path = '/'; + } + + $query = $uri_matches[6]; + if ($query === null) { + $query = ''; + } + + $fragment = $uri_matches[8]; + if ($fragment === null) { + $fragment = ''; + } + + return $scheme . '://' . $authority . $path . $query . $fragment; +} + + |