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+<?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;
+ }
+}
+