actions/apitimelineuser.php

   1 <?php
   2 /**
   3  * StatusNet, the distributed open-source microblogging tool
   4  *
   5  * Show a user's timeline
   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  * @category  API
  23  * @package   StatusNet
  24  * @author    Craig Andrews <candrews@integralblue.com>
  25  * @author    Evan Prodromou <evan@status.net>
  26  * @author    Jeffery To <jeffery.to@gmail.com>
  27  * @author    mac65 <mac65@mac65.com>
  28  * @author    Mike Cochrane <mikec@mikenz.geek.nz>
  29  * @author    Robin Millette <robin@millette.info>
  30  * @author    Zach Copley <zach@status.net>
  31  * @copyright 2009 StatusNet, Inc.
  32  * @copyright 2009 Free Software Foundation, Inc http://www.fsf.org
  33  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  34  * @link      http://status.net/
  35  */
  36
  37 if (!defined('STATUSNET')) {
  38     exit(1);
  39 }
  40
  41 require_once INSTALLDIR . '/lib/apibareauth.php';
  42
  43 /**
  44  * Returns the most recent notices (default 20) posted by the authenticating
  45  * user. Another user's timeline can be requested via the id parameter. This
  46  * is the API equivalent of the user profile web page.
  47  *
  48  * @category API
  49  * @package  StatusNet
  50  * @author   Craig Andrews <candrews@integralblue.com>
  51  * @author   Evan Prodromou <evan@status.net>
  52  * @author   Jeffery To <jeffery.to@gmail.com>
  53  * @author   mac65 <mac65@mac65.com>
  54  * @author   Mike Cochrane <mikec@mikenz.geek.nz>
  55  * @author   Robin Millette <robin@millette.info>
  56  * @author   Zach Copley <zach@status.net>
  57  * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  58  * @link     http://status.net/
  59  */
  60 class ApiTimelineUserAction extends ApiBareAuthAction
  61 {
  62     var $notices = null;
  63
  64     /**
  65      * Take arguments for running
  66      *
  67      * @param array $args $_REQUEST args
  68      *
  69      * @return boolean success flag
  70      */
  71     function prepare($args)
  72     {
  73         parent::prepare($args);
  74
  75         $this->user = $this->getTargetUser($this->arg('id'));
  76
  77         if (empty($this->user)) {
  78             // TRANS: Client error displayed requesting most recent notices for a non-existing user.
  79             $this->clientError(_('No such user.'), 404, $this->format);
  80             return;
  81         }
  82
  83         $this->notices = $this->getNotices();
  84
  85         return true;
  86     }
  87
  88     /**
  89      * Handle the request
  90      *
  91      * Just show the notices
  92      *
  93      * @param array $args $_REQUEST data (unused)
  94      *
  95      * @return void
  96      */
  97     function handle($args)
  98     {
  99         parent::handle($args);
 100
 101         if ($this->isPost()) {
 102             $this->handlePost();
 103         } else {
 104             $this->showTimeline();
 105         }
 106     }
 107
 108     /**
 109      * Show the timeline of notices
 110      *
 111      * @return void
 112      */
 113     function showTimeline()
 114     {
 115         $profile = $this->user->getProfile();
 116
 117         // We'll use the shared params from the Atom stub
 118         // for other feed types.
 119         $atom = new AtomUserNoticeFeed($this->user, $this->auth_user);
 120
 121         $link = common_local_url(
 122                                  'showstream',
 123                                  array('nickname' => $this->user->nickname)
 124                                  );
 125
 126         $self = $this->getSelfUri();
 127
 128         // FriendFeed's SUP protocol
 129         // Also added RSS and Atom feeds
 130
 131         $suplink = common_local_url('sup', null, null, $this->user->id);
 132         header('X-SUP-ID: ' . $suplink);
 133
 134         switch($this->format) {
 135         case 'xml':
 136             $this->showXmlTimeline($this->notices);
 137             break;
 138         case 'rss':
 139             $this->showRssTimeline(
 140                                    $this->notices,
 141                                    $atom->title,
 142                                    $link,
 143                                    $atom->subtitle,
 144                                    $suplink,
 145                                    $atom->logo,
 146                                    $self
 147                                    );
 148             break;
 149         case 'atom':
 150             header('Content-Type: application/atom+xml; charset=utf-8');
 151
 152             $atom->setId($self);
 153             $atom->setSelfLink($self);
 154
 155             // Add navigation links: next, prev, first
 156             // Note: we use IDs rather than pages for navigation; page boundaries
 157             // change too quickly!
 158
 159             if (!empty($this->next_id)) {
 160                 $nextUrl = common_local_url('ApiTimelineUser',
 161                                             array('format' => 'atom',
 162                                                   'id' => $this->user->id),
 163                                             array('max_id' => $this->next_id));
 164
 165                 $atom->addLink($nextUrl,
 166                                array('rel' => 'next',
 167                                      'type' => 'application/atom+xml'));
 168             }
 169
 170             if (($this->page > 1 || !empty($this->max_id)) && !empty($this->notices)) {
 171
 172                 $lastNotice = $this->notices[0];
 173                 $lastId     = $lastNotice->id;
 174
 175                 $prevUrl = common_local_url('ApiTimelineUser',
 176                                             array('format' => 'atom',
 177                                                   'id' => $this->user->id),
 178                                             array('since_id' => $lastId));
 179
 180                 $atom->addLink($prevUrl,
 181                                array('rel' => 'prev',
 182                                      'type' => 'application/atom+xml'));
 183             }
 184
 185             if ($this->page > 1 || !empty($this->since_id) || !empty($this->max_id)) {
 186
 187                 $firstUrl = common_local_url('ApiTimelineUser',
 188                                             array('format' => 'atom',
 189                                                   'id' => $this->user->id));
 190
 191                 $atom->addLink($firstUrl,
 192                                array('rel' => 'first',
 193                                      'type' => 'application/atom+xml'));
 194
 195             }
 196
 197             $atom->addEntryFromNotices($this->notices);
 198             $this->raw($atom->getString());
 199
 200             break;
 201         case 'json':
 202             $this->showJsonTimeline($this->notices);
 203             break;
 204         default:
 205             // TRANS: Client error displayed when trying to handle an unknown API method.
 206             $this->clientError(_('API method not found.'), $code = 404);
 207             break;
 208         }
 209     }
 210
 211     /**
 212      * Get notices
 213      *
 214      * @return array notices
 215      */
 216     function getNotices()
 217     {
 218         $notices = array();
 219
 220         $notice = $this->user->getNotices(($this->page-1) * $this->count,
 221                                           $this->count + 1,
 222                                           $this->since_id,
 223                                           $this->max_id);
 224
 225         while ($notice->fetch()) {
 226             if (count($notices) < $this->count) {
 227                 $notices[] = clone($notice);
 228             } else {
 229                 $this->next_id = $notice->id;
 230                 break;
 231             }
 232         }
 233
 234         return $notices;
 235     }
 236
 237     /**
 238      * Is this action read only?
 239      *
 240      * @param array $args other arguments
 241      *
 242      * @return boolean true
 243      */
 244
 245     function isReadOnly($args)
 246     {
 247         if ($_SERVER['REQUEST_METHOD'] == 'GET') {
 248             return true;
 249         } else {
 250             return false;
 251         }
 252     }
 253
 254     /**
 255      * When was this feed last modified?
 256      *
 257      * @return string datestamp of the latest notice in the stream
 258      */
 259     function lastModified()
 260     {
 261         if (!empty($this->notices) && (count($this->notices) > 0)) {
 262             return strtotime($this->notices[0]->created);
 263         }
 264
 265         return null;
 266     }
 267
 268     /**
 269      * An entity tag for this stream
 270      *
 271      * Returns an Etag based on the action name, language, user ID, and
 272      * timestamps of the first and last notice in the timeline
 273      *
 274      * @return string etag
 275      */
 276     function etag()
 277     {
 278         if (!empty($this->notices) && (count($this->notices) > 0)) {
 279             $last = count($this->notices) - 1;
 280
 281             return '"' . implode(
 282                                  ':',
 283                                  array($this->arg('action'),
 284                                        common_user_cache_hash($this->auth_user),
 285                                        common_language(),
 286                                        $this->user->id,
 287                                        strtotime($this->notices[0]->created),
 288                                        strtotime($this->notices[$last]->created))
 289                                  )
 290               . '"';
 291         }
 292
 293         return null;
 294     }
 295
 296     function handlePost()
 297     {
 298         if (empty($this->auth_user) ||
 299             $this->auth_user->id != $this->user->id) {
 300             $this->clientError(_("Only the user can add to their own timeline."));
 301             return;
 302         }
 303
 304         if ($this->format != 'atom') {
 305             // Only handle posts for Atom
 306             $this->clientError(_("Only accept AtomPub for atom feeds."));
 307             return;
 308         }
 309
 310         $xml = file_get_contents('php://input');
 311
 312         $dom = DOMDocument::loadXML($xml);
 313
 314         if ($dom->documentElement->namespaceURI != Activity::ATOM ||
 315             $dom->documentElement->localName != 'entry') {
 316             $this->clientError(_('Atom post must be an Atom entry.'));
 317             return;
 318         }
 319
 320         $activity = new Activity($dom->documentElement);
 321
 322         if (Event::handle('StartAtomPubNewActivity', array(&$activity))) {
 323
 324             if ($activity->verb != ActivityVerb::POST) {
 325                 $this->clientError(_('Can only handle post activities.'));
 326                 return;
 327             }
 328
 329             $note = $activity->objects[0];
 330
 331             if (!in_array($note->type, array(ActivityObject::NOTE,
 332                                              ActivityObject::BLOGENTRY,
 333                                              ActivityObject::STATUS))) {
 334                 $this->clientError(sprintf(_('Cannot handle activity object type "%s"',
 335                                              $note->type)));
 336                 return;
 337             }
 338
 339             $saved = $this->postNote($activity);
 340
 341             Event::handle('EndAtomPubNewActivity', array($activity, $saved));
 342         }
 343
 344         if (!empty($saved)) {
 345             header("Location: " . common_local_url('ApiStatusesShow', array('notice_id' => $saved->id,
 346                                                                             'format' => 'atom')));
 347             $this->showSingleAtomStatus($saved);
 348         }
 349     }
 350
 351     function postNote($activity)
 352     {
 353         $note = $activity->objects[0];
 354
 355         // Use summary as fallback for content
 356
 357         if (!empty($note->content)) {
 358             $sourceContent = $note->content;
 359         } else if (!empty($note->summary)) {
 360             $sourceContent = $note->summary;
 361         } else if (!empty($note->title)) {
 362             $sourceContent = $note->title;
 363         } else {
 364             // @fixme fetch from $sourceUrl?
 365             // @todo i18n FIXME: use sprintf and add i18n.
 366             $this->clientError("No content for notice {$note->id}.");
 367             return;
 368         }
 369
 370         // Get (safe!) HTML and text versions of the content
 371
 372         $rendered = $this->purify($sourceContent);
 373         $content = html_entity_decode(strip_tags($rendered), ENT_QUOTES, 'UTF-8');
 374
 375         $shortened = common_shorten_links($content);
 376
 377         $options = array('is_local' => Notice::LOCAL_PUBLIC,
 378                          'rendered' => $rendered,
 379                          'replies' => array(),
 380                          'groups' => array(),
 381                          'tags' => array(),
 382                          'urls' => array());
 383
 384         // accept remote URI (not necessarily a good idea)
 385
 386         common_debug("Note ID is {$note->id}");
 387
 388         if (!empty($note->id)) {
 389             $notice = Notice::staticGet('uri', trim($note->id));
 390
 391             if (!empty($notice)) {
 392                 $this->clientError(sprintf(_('Notice with URI "%s" already exists.'),
 393                                            $note->id));
 394                 return;
 395             }
 396             common_log(LOG_NOTICE, "Saving client-supplied notice URI '$note->id'");
 397             $options['uri'] = $note->id;
 398         }
 399
 400         // accept remote create time (also maybe not such a good idea)
 401
 402         if (!empty($activity->time)) {
 403             common_log(LOG_NOTICE, "Saving client-supplied create time {$activity->time}");
 404             $options['created'] = common_sql_date($activity->time);
 405         }
 406
 407         // Check for optional attributes...
 408
 409         if (!empty($activity->context)) {
 410
 411             foreach ($activity->context->attention as $uri) {
 412
 413                 $profile = Profile::fromURI($uri);
 414
 415                 if (!empty($profile)) {
 416                     $options['replies'] = $uri;
 417                 } else {
 418                     $group = User_group::staticGet('uri', $uri);
 419                     if (!empty($group)) {
 420                         $options['groups'] = $uri;
 421                     } else {
 422                         // @fixme: hook for discovery here
 423                         common_log(LOG_WARNING, sprintf(_('AtomPub post with unknown attention URI %s'), $uri));
 424                     }
 425                 }
 426             }
 427
 428             // Maintain direct reply associations
 429             // @fixme what about conversation ID?
 430
 431             if (!empty($activity->context->replyToID)) {
 432                 $orig = Notice::staticGet('uri',
 433                                           $activity->context->replyToID);
 434                 if (!empty($orig)) {
 435                     $options['reply_to'] = $orig->id;
 436                 }
 437             }
 438
 439             $location = $activity->context->location;
 440
 441             if ($location) {
 442                 $options['lat'] = $location->lat;
 443                 $options['lon'] = $location->lon;
 444                 if ($location->location_id) {
 445                     $options['location_ns'] = $location->location_ns;
 446                     $options['location_id'] = $location->location_id;
 447                 }
 448             }
 449         }
 450
 451         // Atom categories <-> hashtags
 452
 453         foreach ($activity->categories as $cat) {
 454             if ($cat->term) {
 455                 $term = common_canonical_tag($cat->term);
 456                 if ($term) {
 457                     $options['tags'][] = $term;
 458                 }
 459             }
 460         }
 461
 462         // Atom enclosures -> attachment URLs
 463         foreach ($activity->enclosures as $href) {
 464             // @fixme save these locally or....?
 465             $options['urls'][] = $href;
 466         }
 467
 468         $saved = Notice::saveNew($this->user->id,
 469                                  $content,
 470                                  'atompub', // TODO: deal with this
 471                                  $options);
 472
 473         return $saved;
 474     }
 475
 476     function purify($content)
 477     {
 478         require_once INSTALLDIR.'/extlib/htmLawed/htmLawed.php';
 479
 480         $config = array('safe' => 1,
 481                         'deny_attribute' => 'id,style,on*');
 482         return htmLawed($content, $config);
 483     }
 484 }