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-rw-r--r--engine/lib/api.php133
1 files changed, 89 insertions, 44 deletions
diff --git a/engine/lib/api.php b/engine/lib/api.php
index 63826cf74..38b93cd3a 100644
--- a/engine/lib/api.php
+++ b/engine/lib/api.php
@@ -348,8 +348,9 @@ function expose_function($method, $function, array $parameters = NULL, $descript
}
if ($parameters != NULL) {
- // ensure the required flag is set correctly in default case
+ // ensure the required flag is set correctly in default case for each parameter
foreach ($parameters as $key => $value) {
+ // check if 'required' was specified - if not, make it true
if (!array_key_exists('required', $value)) {
$parameters[$key]['required'] = true;
}
@@ -627,14 +628,13 @@ function verify_parameters($method, $parameters) {
// check that the parameters were registered correctly and all required ones are there
foreach ($API_METHODS[$method]['parameters'] as $key => $value) {
- // must be array to describe parameter in expose and type must be defined
+ // this tests the expose structure: must be array to describe parameter and type must be defined
if (!is_array($value) || !isset($value['type'])) {
throw new APIException(sprintf(elgg_echo('APIException:InvalidParameter'), $key, $method));
}
// Check that the variable is present in the request if required
- $is_param_required = !isset($value['required']) || $value['required'];
- if ($is_param_required && !array_key_exists($key, $parameters)) {
+ if ($value['required'] && !array_key_exists($key, $parameters)) {
throw new APIException(sprintf(elgg_echo('APIException:MissingParameterInMethod'), $key, $method));
}
}
@@ -739,9 +739,12 @@ function api_auth_key() {
// check that it is active
$api_user = get_api_user($CONFIG->site_id, $api_key);
if (!$api_user) {
- throw new APIException(elgg_echo('APIException:MissingAPIKey'));
+ // key is not active or does not exist
+ throw new APIException(elgg_echo('APIException:BadAPIKey'));
}
+ // can be used for keeping stats
+ // plugin can also return false to fail this authentication method
return trigger_plugin_hook('api_key', 'use', $api_key, true);
}
@@ -957,6 +960,34 @@ function cache_hmac_check_replay($hmac) {
// API key functions /////////////////////////////////////////////////////////////////////
/**
+ * Generate a new API user for a site, returning a new keypair on success.
+ *
+ * @param int $site_guid The GUID of the site. (default is current site)
+ */
+function create_api_user($site_guid) {
+ global $CONFIG;
+
+ if (!isset($site_guid)) {
+ $site_guid = $CONFIG->site_id;
+ }
+
+ $site_guid = (int)$site_guid;
+
+ $public = sha1(rand().$site_guid.microtime());
+ $secret = sha1(rand().$site_guid.microtime().$public);
+
+ $insert = insert_data("INSERT into {$CONFIG->dbprefix}api_users
+ (site_guid, api_key, secret) values
+ ($site_guid, '$public', '$secret')");
+
+ if ($insert) {
+ return get_api_user($site_guid, $public);
+ }
+
+ return false;
+}
+
+/**
* Find an API User's details based on the provided public api key. These users are not users in the traditional sense.
*
* @param int $site_guid The GUID of the site.
@@ -989,29 +1020,6 @@ function remove_api_user($site_guid, $api_key) {
return false;
}
-/**
- * Generate a new API user for a site, returning a new keypair on success.
- *
- * @param int $site_guid The GUID of the site.
- */
-function create_api_user($site_guid) {
- global $CONFIG;
-
- $site_guid = (int)$site_guid;
-
- $public = sha1(rand().$site_guid.microtime());
- $secret = sha1(rand().$site_guid.microtime().$public);
-
- $insert = insert_data("INSERT into {$CONFIG->dbprefix}api_users
- (site_guid, api_key, secret) values
- ($site_guid, '$public', '$secret')");
-
- if ($insert) {
- return get_api_user($site_guid, $public);
- }
-
- return false;
-}
// User Authorization functions ////////////////////////////////////////////////////////////////
@@ -1029,7 +1037,7 @@ function pam_auth_usertoken($credentials = NULL) {
$token = get_input('auth_token');
- $validated_userid = validate_user_token($CONFIG->site_id, $token);
+ $validated_userid = validate_user_token($token);
if ($validated_userid) {
$u = get_entity($validated_userid);
@@ -1071,16 +1079,16 @@ function pam_auth_session($credentials = NULL) {
* Obtain a token for a user.
*
* @param string $username The username
- * @param string $password The password
+ * @param int $expire minutes until token expires (default is 60 minutes)
*/
-function obtain_user_token($username, $password) {
+function create_user_token($username, $expire = 60) {
global $CONFIG;
- $site = $CONFIG->site_id;
+ $site_guid = $CONFIG->site_id;
$user = get_user_by_username($username);
$time = time();
- $time += 60*60; // token is good for one hour
- $token = md5(rand(). microtime() . $username . $password . $time . $site);
+ $time += 60 * $expire;
+ $token = md5(rand(). microtime() . $username . $time . $site_guid);
if (!$user) {
return false;
@@ -1088,7 +1096,7 @@ function obtain_user_token($username, $password) {
if (insert_data("INSERT into {$CONFIG->dbprefix}users_apisessions
(user_guid, site_guid, token, expires) values
- ({$user->guid}, $site, '$token', '$time') on duplicate key update token='$token', expires='$time'")) {
+ ({$user->guid}, $site_guid, '$token', '$time') on duplicate key update token='$token', expires='$time'")) {
return $token;
}
@@ -1101,24 +1109,24 @@ function obtain_user_token($username, $password) {
* A token registered with one site can not be used from a different apikey(site), so be aware of this
* during development.
*
- * @param int $site The ID of the site
* @param string $token The Token.
+ * @param int $site_guid The ID of the site (default is current site)
* @return mixed The user id attached to the token or false.
*/
-function validate_user_token($site, $token) {
+function validate_user_token($token, $site_guid) {
global $CONFIG;
- $site = (int)$site;
- $token = sanitise_string($token);
-
- if (!$site) {
- throw new ConfigurationException(elgg_echo('ConfigurationException:NoSiteID'));
+ if (!isset($site_guid)) {
+ $site_guid = $CONFIG->site_id;
}
+
+ $site_guid = (int)$site_guid;
+ $token = sanitise_string($token);
$time = time();
$user = get_data_row("SELECT * from {$CONFIG->dbprefix}users_apisessions
- where token='$token' and site_guid=$site and $time < expires");
+ where token='$token' and site_guid=$site_guid and $time < expires");
if ($user) {
return $user->user_guid;
@@ -1127,6 +1135,43 @@ function validate_user_token($site, $token) {
return false;
}
+/**
+ * Remove user token
+ *
+ * @param string $token
+ * @param int $site_guid The ID of the site (default is current site)
+ * @return bool
+ */
+function remove_user_token($token, $site_guid) {
+ global $CONFIG;
+
+ if (!isset($site_guid)) {
+ $site_guid = $CONFIG->site_id;
+ }
+
+ $site_guid = (int)$site_guid;
+ $token = sanitise_string($token);
+
+ return delete_data("DELETE from {$CONFIG->dbprefix}users_apisessions
+ where site_guid=$site_guid and token='$token'");
+}
+
+/**
+ * Remove expired tokens
+ *
+ * @return bool
+ */
+function remove_expired_user_tokens() {
+ global $CONFIG;
+
+ $site_guid = $CONFIG->site_id;
+
+ $time = time();
+
+ return delete_data("DELETE from {$CONFIG->dbprefix}users_apisessions
+ where site_guid=$site_guid and expires < $time");
+}
+
// Client api functions ///////////////////////////////////////////////////////////////////
/**
@@ -1298,7 +1343,7 @@ function list_all_apis() {
*/
function auth_gettoken($username, $password) {
if (authenticate($username, $password)) {
- $token = obtain_user_token($username, $password);
+ $token = create_user_token($username);
if ($token) {
return $token;
}