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 $args other arguments
 241      *
 242      * @return boolean true
 243      */
 244     function isReadOnly($args)
 245     {
 246         return true;
 247     }
 248
 249     /**
 250      * When was this feed last modified?
 251      *
 252      * @return string datestamp of the latest notice in the stream
 253      */
 254     function lastModified()
 255     {
 256         if (!empty($this->notices) && (count($this->notices) > 0)) {
 257             return strtotime($this->notices[0]->created);
 258         }
 259
 260         return null;
 261     }
 262
 263     /**
 264      * An entity tag for this stream
 265      *
 266      * Returns an Etag based on the action name, language, user ID, and
 267      * timestamps of the first and last notice in the timeline
 268      *
 269      * @return string etag
 270      */
 271     function etag()
 272     {
 273         if (!empty($this->notices) && (count($this->notices) > 0)) {
 274             $last = count($this->notices) - 1;
 275
 276             return '"' . implode(
 277                                  ':',
 278                                  array($this->arg('action'),
 279                                        common_user_cache_hash($this->auth_user),
 280                                        common_language(),
 281                                        $this->user->id,
 282                                        strtotime($this->notices[0]->created),
 283                                        strtotime($this->notices[$last]->created))
 284                                  )
 285               . '"';
 286         }
 287
 288         return null;
 289     }
 290
 291     function handlePost()
 292     {
 293         if (empty($this->auth_user) ||
 294             $this->auth_user->id != $this->user->id) {
 295             $this->clientError(_("Only the user can add to their own timeline."));
 296             return;
 297         }
 298
 299         if ($this->format != 'atom') {
 300             // Only handle posts for Atom
 301             $this->clientError(_("Only accept AtomPub for atom feeds."));
 302             return;
 303         }
 304
 305         $xml = file_get_contents('php://input');
 306
 307         $dom = DOMDocument::loadXML($xml);
 308
 309         if ($dom->documentElement->namespaceURI != Activity::ATOM ||
 310             $dom->documentElement->localName != 'entry') {
 311             $this->clientError(_('Atom post must be an Atom entry.'));
 312             return;
 313         }
 314
 315         $activity = new Activity($dom->documentElement);
 316
 317         if (Event::handle('StartAtomPubNewActivity', array(&$activity))) {
 318
 319             if ($activity->verb != ActivityVerb::POST) {
 320                 $this->clientError(_('Can only handle post activities.'));
 321                 return;
 322             }
 323
 324             $note = $activity->objects[0];
 325
 326             if (!in_array($note->type, array(ActivityObject::NOTE,
 327                                              ActivityObject::BLOGENTRY,
 328                                              ActivityObject::STATUS))) {
 329                 $this->clientError(sprintf(_('Cannot handle activity object type "%s"',
 330                                              $note->type)));
 331                 return;
 332             }
 333
 334             $saved = $this->postNote($activity);
 335
 336             Event::handle('EndAtomPubNewActivity', array($activity, $saved));
 337         }
 338
 339         if (!empty($saved)) {
 340             header("Location: " . common_local_url('ApiStatusesShow', array('notice_id' => $saved->id,
 341                                                                             'format' => 'atom')));
 342             $this->showSingleAtomStatus($saved);
 343         }
 344     }
 345
 346     function postNote($activity)
 347     {
 348         $note = $activity->objects[0];
 349
 350         // Use summary as fallback for content
 351
 352         if (!empty($note->content)) {
 353             $sourceContent = $note->content;
 354         } else if (!empty($note->summary)) {
 355             $sourceContent = $note->summary;
 356         } else if (!empty($note->title)) {
 357             $sourceContent = $note->title;
 358         } else {
 359             // @fixme fetch from $sourceUrl?
 360             // @todo i18n FIXME: use sprintf and add i18n.
 361             $this->clientError("No content for notice {$note->id}.");
 362             return;
 363         }
 364
 365         // Get (safe!) HTML and text versions of the content
 366
 367         $rendered = $this->purify($sourceContent);
 368         $content = html_entity_decode(strip_tags($rendered), ENT_QUOTES, 'UTF-8');
 369
 370         $shortened = common_shorten_links($content);
 371
 372         $options = array('is_local' => Notice::LOCAL_PUBLIC,
 373                          'rendered' => $rendered,
 374                          'replies' => array(),
 375                          'groups' => array(),
 376                          'tags' => array(),
 377                          'urls' => array());
 378
 379         // accept remote URI (not necessarily a good idea)
 380
 381         common_debug("Note ID is {$note->id}");
 382
 383         if (!empty($note->id)) {
 384             $notice = Notice::staticGet('uri', trim($note->id));
 385
 386             if (!empty($notice)) {
 387                 $this->clientError(sprintf(_('Notice with URI "%s" already exists.'),
 388                                            $note->id));
 389                 return;
 390             }
 391             common_log(LOG_NOTICE, "Saving client-supplied notice URI '$note->id'");
 392             $options['uri'] = $note->id;
 393         }
 394
 395         // accept remote create time (also maybe not such a good idea)
 396
 397         if (!empty($activity->time)) {
 398             common_log(LOG_NOTICE, "Saving client-supplied create time {$activity->time}");
 399             $options['created'] = common_sql_date($activity->time);
 400         }
 401
 402         // Check for optional attributes...
 403
 404         if (!empty($activity->context)) {
 405
 406             foreach ($activity->context->attention as $uri) {
 407
 408                 $profile = Profile::fromURI($uri);
 409
 410                 if (!empty($profile)) {
 411                     $options['replies'] = $uri;
 412                 } else {
 413                     $group = User_group::staticGet('uri', $uri);
 414                     if (!empty($group)) {
 415                         $options['groups'] = $uri;
 416                     } else {
 417                         // @fixme: hook for discovery here
 418                         common_log(LOG_WARNING, sprintf(_('AtomPub post with unknown attention URI %s'), $uri));
 419                     }
 420                 }
 421             }
 422
 423             // Maintain direct reply associations
 424             // @fixme what about conversation ID?
 425
 426             if (!empty($activity->context->replyToID)) {
 427                 $orig = Notice::staticGet('uri',
 428                                           $activity->context->replyToID);
 429                 if (!empty($orig)) {
 430                     $options['reply_to'] = $orig->id;
 431                 }
 432             }
 433
 434             $location = $activity->context->location;
 435
 436             if ($location) {
 437                 $options['lat'] = $location->lat;
 438                 $options['lon'] = $location->lon;
 439                 if ($location->location_id) {
 440                     $options['location_ns'] = $location->location_ns;
 441                     $options['location_id'] = $location->location_id;
 442                 }
 443             }
 444         }
 445
 446         // Atom categories <-> hashtags
 447
 448         foreach ($activity->categories as $cat) {
 449             if ($cat->term) {
 450                 $term = common_canonical_tag($cat->term);
 451                 if ($term) {
 452                     $options['tags'][] = $term;
 453                 }
 454             }
 455         }
 456
 457         // Atom enclosures -> attachment URLs
 458         foreach ($activity->enclosures as $href) {
 459             // @fixme save these locally or....?
 460             $options['urls'][] = $href;
 461         }
 462
 463         $saved = Notice::saveNew($this->user->id,
 464                                  $content,
 465                                  'atompub', // TODO: deal with this
 466                                  $options);
 467
 468         return $saved;
 469     }
 470
 471     function purify($content)
 472     {
 473         require_once INSTALLDIR.'/extlib/htmLawed/htmLawed.php';
 474
 475         $config = array('safe' => 1,
 476                         'deny_attribute' => 'id,style,on*');
 477         return htmLawed($content, $config);
 478     }
 479 }