MDL-22985, repository plugins use new callback url.
[moodle.git] / repository / picasa / lib.php
CommitLineData
83b51087 1<?php
10d53fd3
DC
2
3// This file is part of Moodle - http://moodle.org/
4//
5// Moodle is free software: you can redistribute it and/or modify
6// it under the terms of the GNU General Public License as published by
7// the Free Software Foundation, either version 3 of the License, or
8// (at your option) any later version.
9//
10// Moodle is distributed in the hope that it will be useful,
11// but WITHOUT ANY WARRANTY; without even the implied warranty of
12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13// GNU General Public License for more details.
14//
15// You should have received a copy of the GNU General Public License
16// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
17
83b51087 18/**
19 * Picasa Repository Plugin
20 *
10d53fd3
DC
21 * @since 2.0
22 * @package moodlecore
23 * @subpackage repository
24 * @copyright 2009 Dan Poltawski
83b51087 25 * @author Dan Poltawski <talktodan@gmail.com>
10d53fd3 26 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
83b51087 27 */
28
29require_once($CFG->libdir.'/googleapi.php');
30
31class repository_picasa extends repository {
32 private $subauthtoken = '';
33
447c7a19 34 public function __construct($repositoryid, $context = SYSCONTEXTID, $options = array()) {
83b51087 35 global $USER;
36 parent::__construct($repositoryid, $context, $options);
37
38 // TODO: I wish there was somewhere we could explicitly put this outside of constructor..
39 $googletoken = optional_param('token', false, PARAM_RAW);
40 if($googletoken){
41 $gauth = new google_authsub(false, $googletoken); // will throw exception if fails
42 google_picasa::set_sesskey($gauth->get_sessiontoken(), $USER->id);
43 }
d1bfc05e 44 $this->check_login();
83b51087 45 }
46
47 public function check_login() {
48 global $USER;
49
50 $sesskey = google_picasa::get_sesskey($USER->id);
51
52 if($sesskey){
53 try{
54 $gauth = new google_authsub($sesskey);
55 $this->subauthtoken = $sesskey;
56 return true;
57 }catch(Exception $e){
58 // sesskey is not valid, delete store and re-auth
59 google_picasa::delete_sesskey($USER->id);
60 }
61 }
62
63 return false;
64 }
65
4317f92f 66 public function print_login(){
83b51087 67 global $CFG;
0b75ea78 68 $returnurl = $CFG->wwwroot.'/repository/repository_callback.php?callback=yes&repo_id='.$this->id;
6876783a 69 $authurl = google_authsub::login_url($returnurl, google_picasa::REALM);
70 if($this->options['ajax']){
4317f92f
PS
71 $ret = array();
72 $popup_btn = new stdclass;
73 $popup_btn->type = 'popup';
6876783a 74 $popup_btn->url = $authurl;
4317f92f
PS
75 $ret['login'] = array($popup_btn);
76 return $ret;
6876783a 77 } else {
78 echo '<a target="_blank" href="'.$authurl.'">Login</a>';
83b51087 79 }
80 }
81
5fa358d1 82 public function get_listing($path='', $page = '') {
83b51087 83 $picasa = new google_picasa(new google_authsub($this->subauthtoken));
84
85 $ret = array();
86 $ret['dynload'] = true;
87 $ret['list'] = $picasa->get_file_list($path);
88 return $ret;
89 }
90
91 public function search($query){
92 $picasa = new google_picasa(new google_authsub($this->subauthtoken));
93
94 $ret = array();
95 $ret['list'] = $picasa->do_photo_search($query);
96 return $ret;
97 }
98
99 public function logout(){
100 global $USER;
101
102 $token = google_picasa::get_sesskey($USER->id);
103
104 $gauth = new google_authsub($token);
105 // revoke token from google
106 $gauth->revoke_session_token();
107
108 google_picasa::delete_sesskey($USER->id);
109 $this->subauthtoken = '';
110
111 return parent::logout();
112 }
113
114 public function get_name(){
614d18d2 115 return get_string('pluginname', 'repository_picasa');
83b51087 116 }
7137e7b9 117 public function supported_filetypes() {
118 return array('web_image');
119 }
41076c58
DC
120 public function supported_returntypes() {
121 return (FILE_INTERNAL | FILE_EXTERNAL);
122 }
83b51087 123}
124
125// Icon for this plugin retrieved from http://www.iconspedia.com/icon/picasa-2711.html
126// Where the license is said documented to be Free