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[quix0rs-gnu-social.git] / plugins / Oembed / actions / oembed.php
1 <?php
2 /**
3  * StatusNet, the distributed open-source microblogging tool
4  *
5  * oEmbed data action for /main/oembed(.xml|.json) requests
6  *
7  * PHP version 5
8  *
9  * LICENCE: This program is free software: you can redistribute it and/or modify
10  * it under the terms of the GNU Affero General Public License as published by
11  * the Free Software Foundation, either version 3 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU Affero General Public License for more details.
18  *
19  * You should have received a copy of the GNU Affero General Public License
20  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
21  */
22
23 if (!defined('GNUSOCIAL')) { exit(1); }
24
25 /**
26  * Oembed provider implementation
27  *
28  * This class handles all /main/oembed(.xml|.json)/ requests.
29  *
30  * @category  oEmbed
31  * @package   GNUsocial
32  * @author    Craig Andrews <candrews@integralblue.com>
33  * @author    Mikael Nordfeldth <mmn@hethane.se>
34  * @copyright 2008 StatusNet, Inc.
35  * @copyright 2014 Free Software Foundation, Inc.
36  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
37  * @link      http://status.net/
38  */
39
40 class OembedAction extends Action
41 {
42     protected function handle()
43     {
44         parent::handle();
45
46         $url = $this->trimmed('url');
47         if (substr(strtolower($url),0,strlen(common_root_url())) !== strtolower(common_root_url())) {
48             // TRANS: Error message displaying attachments. %s is the site's base URL.
49             $this->clientError(sprintf(_('oEmbed data will only be provided for %s URLs.'), common_root_url()), 400);
50         }
51
52         $path = substr($url,strlen(common_root_url()));
53
54         $r = Router::get();
55
56         $proxy_args = $r->map($path);
57         if (!$proxy_args) {
58             // TRANS: Client error displayed in oEmbed action when path not found.
59             // TRANS: %s is a path.
60             $this->clientError(sprintf(_('"%s" not found.'),$path), 404);
61         }
62
63         $oembed=array();
64         $oembed['version']='1.0';
65         $oembed['provider_name']=common_config('site', 'name');
66         $oembed['provider_url']=common_root_url();
67
68         switch ($proxy_args['action']) {
69         case 'shownotice':
70             $oembed['type']='link';
71             $id = $proxy_args['notice'];
72             $notice = Notice::getKV($id);
73             if(empty($notice)){
74                 // TRANS: Client error displayed in oEmbed action when notice not found.
75                 // TRANS: %s is a notice.
76                 $this->clientError(sprintf(_("Notice %s not found."),$id), 404);
77             }
78             $profile = $notice->getProfile();
79             if (empty($profile)) {
80                 // TRANS: Server error displayed in oEmbed action when notice has not profile.
81                 $this->serverError(_('Notice has no profile.'), 500);
82             }
83             $authorname = $profile->getFancyName();
84             // TRANS: oEmbed title. %1$s is the author name, %2$s is the creation date.
85             $oembed['title'] = sprintf(_('%1$s\'s status on %2$s'),
86                 $authorname,
87                 common_exact_date($notice->created));
88             $oembed['author_name']=$authorname;
89             $oembed['author_url']=$profile->profileurl;
90             $oembed['url']=$notice->getUrl();
91             $oembed['html']=$notice->rendered;
92             break;
93
94         case 'attachment':
95             $id = $proxy_args['attachment'];
96             $attachment = File::getKV($id);
97             if(empty($attachment)){
98                 // TRANS: Client error displayed in oEmbed action when attachment not found.
99                 // TRANS: %d is an attachment ID.
100                 $this->clientError(sprintf(_('Attachment %s not found.'),$id), 404);
101             }
102             if (empty($attachment->filename) && $file_oembed = File_oembed::getKV('file_id', $attachment->id)) {
103                 // Proxy the existing oembed information
104                 $oembed['type']=$file_oembed->type;
105                 $oembed['provider']=$file_oembed->provider;
106                 $oembed['provider_url']=$file_oembed->provider_url;
107                 $oembed['width']=$file_oembed->width;
108                 $oembed['height']=$file_oembed->height;
109                 $oembed['html']=$file_oembed->html;
110                 $oembed['title']=$file_oembed->title;
111                 $oembed['author_name']=$file_oembed->author_name;
112                 $oembed['author_url']=$file_oembed->author_url;
113                 $oembed['url']=$file_oembed->getUrl();
114             } elseif (substr($attachment->mimetype,0,strlen('image/'))==='image/') {
115                 $oembed['type']='photo';
116                 if ($attachment->filename) {
117                     $filepath = File::path($attachment->filename);
118                     $gis = @getimagesize($filepath);
119                     if ($gis) {
120                         $oembed['width'] = $gis[0];
121                         $oembed['height'] = $gis[1];
122                     } else {
123                         // TODO Either throw an error or find a fallback?
124                     }
125                 }
126                 $oembed['url']=$attachment->getUrl();
127                 try {
128                     $thumb = $attachment->getThumbnail();
129                     $oembed['thumbnail_url'] = $thumb->getUrl();
130                     $oembed['thumbnail_width'] = $thumb->width;
131                     $oembed['thumbnail_height'] = $thumb->height;
132                     unset($thumb);
133                 } catch (UnsupportedMediaException $e) {
134                     // No thumbnail data available
135                 }
136             } else {
137                 $oembed['type']='link';
138                 $oembed['url']=common_local_url('attachment',
139                     array('attachment' => $attachment->id));
140             }
141             if ($attachment->title) {
142                 $oembed['title']=$attachment->title;
143             }
144             break;
145         default:
146             // TRANS: Server error displayed in oEmbed request when a path is not supported.
147             // TRANS: %s is a path.
148             $this->serverError(sprintf(_('"%s" not supported for oembed requests.'),$path), 501);
149         }
150
151         switch ($this->trimmed('format')) {
152         case 'xml':
153             $this->init_document('xml');
154             $this->elementStart('oembed');
155             foreach(array(
156                         'version', 'type', 'provider_name',
157                         'provider_url', 'title', 'author_name',
158                         'author_url', 'url', 'html', 'width',
159                         'height', 'cache_age', 'thumbnail_url',
160                         'thumbnail_width', 'thumbnail_height',
161                     ) as $key) {
162                 if (isset($oembed[$key]) && $oembed[$key]!='') {
163                     $this->element($key, null, $oembed[$key]);
164                 }
165             }
166             $this->elementEnd('oembed');
167             $this->end_document('xml');
168             break;
169
170         case 'json':
171         case null:
172             $this->init_document('json');
173             $this->raw(json_encode($oembed));
174             $this->end_document('json');
175             break;
176         default:
177             // TRANS: Error message displaying attachments. %s is a raw MIME type (eg 'image/png')
178             $this->serverError(sprintf(_('Content type %s not supported.'), $apidata['content-type']), 501);
179         }
180     }
181
182     public function init_document($type)
183     {
184         switch ($type) {
185         case 'xml':
186             header('Content-Type: application/xml; charset=utf-8');
187             $this->startXML();
188             break;
189         case 'json':
190             header('Content-Type: application/json; charset=utf-8');
191
192             // Check for JSONP callback
193             $callback = $this->arg('callback');
194             if ($callback) {
195                 print $callback . '(';
196             }
197             break;
198         default:
199             // TRANS: Server error displayed in oEmbed action when request specifies an unsupported data format.
200             $this->serverError(_('Not a supported data format.'), 501);
201             break;
202         }
203     }
204
205     public function end_document($type)
206     {
207         switch ($type) {
208         case 'xml':
209             $this->endXML();
210             break;
211         case 'json':
212             // Check for JSONP callback
213             $callback = $this->arg('callback');
214             if ($callback) {
215                 print ')';
216             }
217             break;
218         default:
219             // TRANS: Server error displayed in oEmbed action when request specifies an unsupported data format.
220             $this->serverError(_('Not a supported data format.'), 501);
221             break;
222         }
223         return;
224     }
225
226     /**
227      * Is this action read-only?
228      *
229      * @param array $args other arguments
230      *
231      * @return boolean is read only action?
232      */
233     function isReadOnly(array $args=array())
234     {
235         return true;
236     }
237 }