+++ /dev/null
-<?php
-/**
- *
- * Rest library
- *
- * @author Jerome Mouneyrac, Ferran Recio, David Castro Garcia
- */
-
-/**
- *
- * @author Jerome Mouneyrac
- * @global object $CFG
- * @param string $rest_arguments example: /mod/forum/get_discussion
- * @return string xml object
- */
-function call_moodle_function ($rest_arguments) {
- global $CFG;
-///REST params conversion
- $functionname = substr($rest_arguments,strrpos($rest_arguments,"/")+1); //retrieve the function name (it's located after the last '/') in $rest_arguments
- //$rest_argument
- $apipath = substr($rest_arguments,0, strlen($rest_arguments) - strlen($functionname)); //api path is the other part of $rest_arguments
-
- $classname = str_replace('/', '_', $apipath); // convert '/' into '_' (e.g. /mod/forum/ => _mod_forum_)
- $classname = substr($classname,1, strlen($classname) - 1); //remove first _ (e.g. _mod_forum => mod_forum)
- $classname .= 'external';
-
- require_once($CFG->dirroot.$apipath.'external.php');
- $wsapi = new $classname();
- $description = $wsapi->get_function_webservice_description($functionname); //retrieve the web service description for this function
-
-///This following line is only REST protocol
- $params = retrieve_params ($description); //retrieve the REST params
-
-///Generic part to any protocols
- if ($params === false) {
- //return an error message, the REST params doesn't match with the web service description
- }
- $res = call_user_func_array ( $classname.'::'.$functionname, $params);
-
-///Transform result into xml in order to send the REST response
- $return = mdl_conn_rest_object_to_xml ($res,key($description['return']));
-
- return "<Result>$return</Result>";
-}
-
-
-/**
- *
- * @author Jerome Mouneyrac
- * @param <type> $description
- * @return <type>
- */
-function retrieve_params ($description) {
- //retrieve REST param matching the description (warning: PHP assign the first instanciation as the first position in the table)
- foreach ($description['wsparams'] as $paramname => $paramtype) {
- $value = optional_param($paramname,null,$paramtype);
- if (!empty($value)) {
- $params[$paramname] = $value;
- }
- }
-
- return $params;
-}
-
-/**
- * auxiliar function for simplexml_object_to_xml
- * @author Ferran Recio, David Castro Garcia
- * @param $obj
- * @param $tag
- * @param $atts assoc array (key => value)
- * @return string
- */
-function mdl_conn_rest_object_to_xml ($obj, $tag,$atts=false) {
- $res = '';
- $tag_atts = '';
- if ($atts) {
- $main_atts = array();
- foreach ($atts as $att=>$val) {
- $main_atts[] = "$att=\"".urlencode($val)."\"";
- }
- if (count($main_atts)) $tag_atts = ' '.implode(' ',$main_atts);
- }
-
- //if is an object
- if (is_object($obj)) {
- $parts = get_object_vars($obj);
- foreach ($parts as $tag2 => $val) {
- $res.= mdl_conn_rest_object_to_xml ($val, $tag2);
- }
- return "<$tag$tag_atts>\n$res</$tag>\n";
- }
- //if it's an array all elements will be inside te same tag but with a new atribute key
- if (is_array($obj)){
- if (!$atts) $atts = array();
- //we came from another array
- if (isset($atts['keys'])) $atts = array();
- foreach ($obj as $key=>$val) {
- $array_atts = $atts;
- $array_atts['key'] = $key;
- $res.= mdl_conn_rest_object_to_xml ($val, $tag,$array_atts);
- }
- return $res;
- }
- //any other type, just encapsule it
- $obj = htmlentities($obj);
- return "<$tag$tag_atts>$obj</$tag>\n";
-
-}
-
-?>
\ No newline at end of file