diff options
Diffstat (limited to 'engine/lib/api.php')
| -rw-r--r-- | engine/lib/api.php | 133 |
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; } |