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141ee541ca
Files are copied to the system user as soon as they are uploaded. Write access is then controlled when serving links to the file. Part of MDL-58220
126 lines
4.1 KiB
PHP
126 lines
4.1 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Rest API base class mapping rest api methods to endpoints with http methods, args and post body.
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*
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* @package core
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* @copyright 2017 Damyon Wiese
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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namespace core\oauth2;
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use curl;
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use coding_exception;
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defined('MOODLE_INTERNAL') || die();
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require_once($CFG->libdir . '/filelib.php');
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/**
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* Rest API base class mapping rest api methods to endpoints with http methods, args and post body.
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*
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* @copyright 2017 Damyon Wiese
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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abstract class rest {
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/** @var curl $curl */
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private $curl;
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/**
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* Constructor.
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*
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* @param curl $curl
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*/
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public function __construct(curl $curl) {
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$this->curl = $curl;
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}
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/**
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* Abstract function to define the functions of the rest API.
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*
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* @return array Example:
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* [ 'listFiles' => [ 'method' => 'get', 'args' => [ 'folder' => PARAM_STRING ], 'response' => 'json' ] ]
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*/
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public abstract function get_api_functions();
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/**
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* Call a function from the Api with a set of arguments and optional data.
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*
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* @param string $functionname
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* @param array $functionargs
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* @param string $rawpost Optional param to include in the body of a post.
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*/
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public function call($functionname, $functionargs, $rawpost = false) {
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$functions = $this->get_api_functions();
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$supportedmethods = [ 'get', 'put', 'post', 'patch', 'head', 'delete' ];
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if (empty($functions[$functionname])) {
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throw new coding_exception('unsupported api functionname: ' . $functionname);
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}
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$method = $functions[$functionname]['method'];
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$endpoint = $functions[$functionname]['endpoint'];
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$responsetype = $functions[$functionname]['response'];
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if (!in_array($method, $supportedmethods)) {
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throw new coding_exception('unsupported api method: ' . $method);
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}
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$args = $functions[$functionname]['args'];
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$callargs = [];
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foreach ($args as $argname => $argtype) {
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if (isset($functionargs[$argname])) {
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$callargs[$argname] = clean_param($functionargs[$argname], $argtype);
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}
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}
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// Allow params in the URL path like /me/{parent}/children.
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foreach ($callargs as $argname => $value) {
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$newendpoint = str_replace('{' . $argname . '}', $value, $endpoint);
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if ($newendpoint != $endpoint) {
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$endpoint = $newendpoint;
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unset($callargs[$argname]);
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}
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}
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if ($rawpost !== false) {
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$queryparams = $this->curl->build_post_data($callargs);
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if (!empty($queryparams)) {
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$endpoint .= '?' . $queryparams;
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}
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$callargs = $rawpost;
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}
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$this->curl->setHeader('Content-type: application/json');
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$response = $this->curl->$method($endpoint, $callargs);
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if ($this->curl->errno == 0) {
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if ($responsetype == 'json') {
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$json = json_decode($response);
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if (!empty($json->error)) {
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throw new rest_exception($json->error->code . ': ' . $json->error->message);
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}
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return $json;
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}
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return $response;
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} else {
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throw new rest_exception($this->curl->error, $this->curl->errno);
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}
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}
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}
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