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-rw-r--r--engine/lib/api.php142
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 */