diff options
Diffstat (limited to 'engine')
| -rw-r--r-- | engine/lib/api.php | 142 |
1 files changed, 139 insertions, 3 deletions
diff --git a/engine/lib/api.php b/engine/lib/api.php index 11543da21..b8d9017c5 100644 --- a/engine/lib/api.php +++ b/engine/lib/api.php @@ -247,12 +247,12 @@ * type => 'int' | 'bool' | 'float' | 'string' | 'array' * required => true (default) | false * ) + * @param string $description Optional human readable description of the function. * @param string $call_method Define what call method should be used for this function. * @param bool $require_auth Whether this requires a user authentication token or not (default is true) - * @param string $description Optional human readable description of the function. * @return bool */ - function expose_function($method, $function, array $parameters = NULL, $call_method = "GET", $require_auth = true, $description = "") + function expose_function($method, $function, array $parameters = NULL, $description = "", $call_method = "GET", $require_auth = true,) { global $METHODS; @@ -429,7 +429,7 @@ } // Expose some system api functions - expose_function("system.api.list", "list_all_apis", NULL, "GET", false, "List all available API calls on the system."); + expose_function("system.api.list", "list_all_apis", NULL, "List all available API calls on the system."); // PAM AUTH HMAC functions //////////////////////////////////////////////////////////////// @@ -680,6 +680,142 @@ return false; } + // Client api functions /////////////////////////////////////////////////////////////////// + + $APICLIENT_LAST_CALL = NULL; + $APICLIENT_LAST_CALL_RAW = ""; + $APICLIENT_LAST_ERROR = NULL; + + /** + * Utility function to serialise a header array into its text representation. + * + * @param $headers array The array of headers "key" => "value" + * @return string + */ + function serialise_api_headers(array $headers) + { + $headers_str = ""; + + foreach ($headers as $k => $v) + $headers_str .= trim($k) . ": " . trim($v) . "\r\n"; + + return trim($headers_str); + } + + /** + * Send a raw API call to an elgg api endpoint. + * + * @param array $keys The api keys. + * @param string $url URL of the endpoint. + * @param array $call Associated array of "variable" => "value" + * @param string $method GET or POST + * @param string $post_data The post data + * @param string $content_type The content type + * @return stdClass The unserialised response object + */ + function send_api_call(array $keys, $url, array $call, $method = 'GET', $post_data = '', $content_type = 'application/octet-stream') + { + global $APICLIENT_LAST_CALL, $APICLIENT_LAST_CALL_RAW, $APICLIENT_LAST_ERROR; + + $headers = array(); + $encoded_params = array(); + + switch (strtoupper($method)) + { + case 'GET' : + case 'POST' : $method = strtoupper($method); break; + default: throw new NotImplementedException(sprintf(elgg_echo('NotImplementedException:CallMethodNotImplemented'), $method)); + } + + // Time + $time = microtime(true); + + // Hard code the format - we're using PHP, so lets use PHP serialisation. + $method['format'] = "php"; + + // URL encode all the parameters + foreach ($method as $k => $v){ + $encoded_params[] = urlencode($k).'='.urlencode($v); + } + + $params = implode('&', $encoded_params); + + // Put together the query string + $url = $url . "?" . $params; + + // Construct headers + if ($method == 'POST') $posthash = calculate_posthash($postdata, 'md5'); + + $headers['X-Elgg-apikey'] = $keys['public']; + $headers['X-Elgg-time'] = $time; + $headers['X-Elgg-hmac-algo'] = 'sha1'; + $headers['X-Elgg-hmac'] = calculate_hmac('sha1', + $time, + $keys['public'], + $keys['private'], + $params, + $posthash + ); + if ($method == 'POST') + { + $headers['X-Elgg-posthash'] = $posthash; + $headers['X-Elgg-posthash-algo'] = 'md5'; + $headers['Content-type'] = $content_type; + $headers['Content-Length'] = strlen($postdata); + } + + // Opt array + $http_opts = array( + 'method' => $method, + 'header' => serialise_api_headers($headers) + ); + if ($method == 'POST') $http_opts['content'] = $post_data; + + $opts = array('http' => $http_opts); + + // Send context + $context = stream_context_create($opts); + + // Send the query and get the result and decode. + $APICLIENT_LAST_CALL_RAW = file_get_contents($url, false, $context); + $APICLIENT_LAST_CALL = unserialize($APICLIENT_LAST_CALL_RAW); + + if (($APICLIENT_LAST_CALL) && ($APICLIENT_LAST_CALL->status!=0)) + $APICLIENT_LAST_ERROR = $APICLIENT_LAST_CALL; + + return $APICLIENT_LAST_CALL; + } + + /** + * Send a GET call + * + * @param string $url URL of the endpoint. + * @param array $call Associated array of "variable" => "value" + * @param array $keys The keys dependant on chosen authentication method + * @return stdClass The unserialised response object + */ + function send_api_get_call($url, array $call, array $keys) { return send_api_call($keys, $url, $call); } + + /** + * Send a GET call + * + * @param string $url URL of the endpoint. + * @param array $call Associated array of "variable" => "value" + * @param array $keys The keys dependant on chosen authentication method + * @param string $post_data The post data + * @param string $content_type The content type + * @return stdClass The unserialised response object + */ + function send_api_post_call($url, array $call, array $keys, $post_data, $content_type = 'application/octet-stream') { return send_api_call($url, $call, 'POST', $post_data, $content_type); } + + /** + * Return a key array suitable for the API client using the standard authentication method based on api-keys and secret keys. + * + * @param string $secret_key Your secret key + * @param string $api_key Your api key + */ + function get_standard_api_key_array($secret_key, $api_key) { return array('public' => $api_key, 'private' => $api_key); } + // Error handler functions //////////////////////////////////////////////////////////////// /** Define a global array of errors */ |