plugins/OStatus/OStatusPlugin.php

   1 <?php
   2 /*
   3  * StatusNet - the distributed open-source microblogging tool
   4  * Copyright (C) 2009-2010, StatusNet, Inc.
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU Affero General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Affero General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Affero General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 /**
  21  * @package OStatusPlugin
  22  * @maintainer Brion Vibber <brion@status.net>
  23  */
  24
  25 if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
  26
  27 set_include_path(get_include_path() . PATH_SEPARATOR . dirname(__FILE__) . '/extlib/');
  28
  29 class FeedSubException extends Exception
  30 {
  31 }
  32
  33 class OStatusPlugin extends Plugin
  34 {
  35     /**
  36      * Hook for RouterInitialized event.
  37      *
  38      * @param Net_URL_Mapper $m path-to-action mapper
  39      * @return boolean hook return
  40      */
  41     function onRouterInitialized($m)
  42     {
  43         // Discovery actions
  44         $m->connect('.well-known/host-meta',
  45                     array('action' => 'hostmeta'));
  46         $m->connect('main/xrd',
  47                     array('action' => 'xrd'));
  48         $m->connect('main/ostatus',
  49                     array('action' => 'ostatusinit'));
  50         $m->connect('main/ostatus?nickname=:nickname',
  51                   array('action' => 'ostatusinit'), array('nickname' => '[A-Za-z0-9_-]+'));
  52         $m->connect('main/ostatussub',
  53                     array('action' => 'ostatussub'));
  54         $m->connect('main/ostatussub',
  55                     array('action' => 'ostatussub'), array('feed' => '[A-Za-z0-9\.\/\:]+'));
  56
  57         // PuSH actions
  58         $m->connect('main/push/hub', array('action' => 'pushhub'));
  59
  60         $m->connect('main/push/callback/:feed',
  61                     array('action' => 'pushcallback'),
  62                     array('feed' => '[0-9]+'));
  63
  64         // Salmon endpoint
  65         $m->connect('main/salmon/user/:id',
  66                     array('action' => 'usersalmon'),
  67                     array('id' => '[0-9]+'));
  68         $m->connect('main/salmon/group/:id',
  69                     array('action' => 'groupsalmon'),
  70                     array('id' => '[0-9]+'));
  71         return true;
  72     }
  73
  74     /**
  75      * Set up queue handlers for outgoing hub pushes
  76      * @param QueueManager $qm
  77      * @return boolean hook return
  78      */
  79     function onEndInitializeQueueManager(QueueManager $qm)
  80     {
  81         // Prepare outgoing distributions after notice save.
  82         $qm->connect('ostatus', 'OStatusQueueHandler');
  83
  84         // Outgoing from our internal PuSH hub
  85         $qm->connect('hubconf', 'HubConfQueueHandler');
  86         $qm->connect('hubout', 'HubOutQueueHandler');
  87
  88         // Outgoing Salmon replies (when we don't need a return value)
  89         $qm->connect('salmon', 'SalmonQueueHandler');
  90
  91         // Incoming from a foreign PuSH hub
  92         $qm->connect('pushin', 'PushInQueueHandler');
  93         return true;
  94     }
  95
  96     /**
  97      * Put saved notices into the queue for pubsub distribution.
  98      */
  99     function onStartEnqueueNotice($notice, &$transports)
 100     {
 101         $transports[] = 'ostatus';
 102         return true;
 103     }
 104
 105     /**
 106      * Add a link header for LRDD Discovery
 107      */
 108     function onStartShowHTML($action)
 109     {
 110         if ($action instanceof ShowstreamAction) {
 111             $acct = 'acct:'. $action->profile->nickname .'@'. common_config('site', 'server');
 112             $url = common_local_url('xrd');
 113             $url.= '?uri='. $acct;
 114
 115             header('Link: <'.$url.'>; rel="'. Discovery::LRDD_REL.'"; type="application/xrd+xml"');
 116         }
 117     }
 118
 119     /**
 120      * Set up a PuSH hub link to our internal link for canonical timeline
 121      * Atom feeds for users and groups.
 122      */
 123     function onStartApiAtom($feed)
 124     {
 125         $id = null;
 126
 127         if ($feed instanceof AtomUserNoticeFeed) {
 128             $salmonAction = 'usersalmon';
 129             $user = $feed->getUser();
 130             $id   = $user->id;
 131             $profile = $user->getProfile();
 132             $feed->setActivitySubject($profile->asActivityNoun('subject'));
 133         } else if ($feed instanceof AtomGroupNoticeFeed) {
 134             $salmonAction = 'groupsalmon';
 135             $group = $feed->getGroup();
 136             $id = $group->id;
 137             $feed->setActivitySubject($group->asActivitySubject());
 138         } else {
 139             return true;
 140         }
 141
 142         if (!empty($id)) {
 143             $hub = common_config('ostatus', 'hub');
 144             if (empty($hub)) {
 145                 // Updates will be handled through our internal PuSH hub.
 146                 $hub = common_local_url('pushhub');
 147             }
 148             $feed->addLink($hub, array('rel' => 'hub'));
 149
 150             // Also, we'll add in the salmon link
 151             $salmon = common_local_url($salmonAction, array('id' => $id));
 152             $feed->addLink($salmon, array('rel' => Salmon::NS_REPLIES));
 153             $feed->addLink($salmon, array('rel' => Salmon::NS_MENTIONS));
 154         }
 155
 156         return true;
 157     }
 158
 159     /**
 160      * Automatically load the actions and libraries used by the plugin
 161      *
 162      * @param Class $cls the class
 163      *
 164      * @return boolean hook return
 165      *
 166      */
 167     function onAutoload($cls)
 168     {
 169         $base = dirname(__FILE__);
 170         $lower = strtolower($cls);
 171         $map = array('activityverb' => 'activity',
 172                      'activityobject' => 'activity',
 173                      'activityutils' => 'activity');
 174         if (isset($map[$lower])) {
 175             $lower = $map[$lower];
 176         }
 177         $files = array("$base/classes/$cls.php",
 178                        "$base/lib/$lower.php");
 179         if (substr($lower, -6) == 'action') {
 180             $files[] = "$base/actions/" . substr($lower, 0, -6) . ".php";
 181         }
 182         foreach ($files as $file) {
 183             if (file_exists($file)) {
 184                 include_once $file;
 185                 return false;
 186             }
 187         }
 188         return true;
 189     }
 190
 191     /**
 192      * Add in an OStatus subscribe button
 193      */
 194     function onStartProfileRemoteSubscribe($output, $profile)
 195     {
 196         $cur = common_current_user();
 197
 198         if (empty($cur)) {
 199             // Add an OStatus subscribe
 200             $output->elementStart('li', 'entity_subscribe');
 201             $url = common_local_url('ostatusinit',
 202                                     array('nickname' => $profile->nickname));
 203             $output->element('a', array('href' => $url,
 204                                         'class' => 'entity_remote_subscribe'),
 205                                 _m('Subscribe'));
 206
 207             $output->elementEnd('li');
 208         }
 209
 210         return false;
 211     }
 212
 213     /**
 214      * Check if we've got remote replies to send via Salmon.
 215      *
 216      * @fixme push webfinger lookup & sending to a background queue
 217      * @fixme also detect short-form name for remote subscribees where not ambiguous
 218      */
 219
 220     function onEndNoticeSave($notice)
 221     {
 222     }
 223
 224     /**
 225      * Find any explicit remote mentions. Accepted forms:
 226      *   Webfinger: @user@example.com
 227      *   Profile link: @example.com/mublog/user
 228      * @param Profile $sender (os user?)
 229      * @param string $text input markup text
 230      * @param array &$mention in/out param: set of found mentions
 231      * @return boolean hook return value
 232      */
 233
 234     function onEndFindMentions($sender, $text, &$mentions)
 235     {
 236         preg_match_all('!(?:^|\s+)
 237                         @(                                # Webfinger:
 238                           (?:\w+\.)*\w+                   #   user
 239                           @                               #   @
 240                           (?:\w+\.)*\w+(?:\w+\-\w+)*\.\w+ #   domain
 241                          |                                # Profile:
 242                           (?:\w+\.)*\w+(?:\w+\-\w+)*\.\w+ #   domain
 243                           (?:/\w+)+                       #   /path1(/path2...)
 244                          )!x',
 245                        $text,
 246                        $wmatches,
 247                        PREG_OFFSET_CAPTURE);
 248
 249         foreach ($wmatches[1] as $wmatch) {
 250             $target = $wmatch[0];
 251             $oprofile = null;
 252
 253             if (strpos($target, '/') === false) {
 254                 $this->log(LOG_INFO, "Checking Webfinger for address '$target'");
 255                 try {
 256                     $oprofile = Ostatus_profile::ensureWebfinger($target);
 257                 } catch (Exception $e) {
 258                     $this->log(LOG_ERR, "Webfinger check failed: " . $e->getMessage());
 259                 }
 260             } else {
 261                 $schemes = array('https', 'http');
 262                 foreach ($schemes as $scheme) {
 263                     $url = "$scheme://$target";
 264                     $this->log(LOG_INFO, "Checking profile address '$url'");
 265                     try {
 266                         $oprofile = Ostatus_profile::ensureProfile($url);
 267                         if ($oprofile) {
 268                             continue;
 269                         }
 270                     } catch (Exception $e) {
 271                         $this->log(LOG_ERR, "Profile check failed: " . $e->getMessage());
 272                     }
 273                 }
 274             }
 275
 276             if (empty($oprofile)) {
 277                 $this->log(LOG_INFO, "No Ostatus_profile found for address '$target'");
 278             } else {
 279
 280                 $this->log(LOG_INFO, "Ostatus_profile found for address '$target'");
 281
 282                 if ($oprofile->isGroup()) {
 283                     continue;
 284                 }
 285                 $profile = $oprofile->localProfile();
 286
 287                 $pos = $wmatch[1];
 288                 foreach ($mentions as $i => $other) {
 289                     // If we share a common prefix with a local user, override it!
 290                     if ($other['position'] == $pos) {
 291                         unset($mentions[$i]);
 292                     }
 293                 }
 294                 $mentions[] = array('mentioned' => array($profile),
 295                                     'text' => $target,
 296                                     'position' => $pos,
 297                                     'url' => $profile->profileurl);
 298             }
 299         }
 300
 301         return true;
 302     }
 303
 304     /**
 305      * Make sure necessary tables are filled out.
 306      */
 307     function onCheckSchema() {
 308         $schema = Schema::get();
 309         $schema->ensureTable('ostatus_profile', Ostatus_profile::schemaDef());
 310         $schema->ensureTable('ostatus_source', Ostatus_source::schemaDef());
 311         $schema->ensureTable('feedsub', FeedSub::schemaDef());
 312         $schema->ensureTable('hubsub', HubSub::schemaDef());
 313         $schema->ensureTable('magicsig', Magicsig::schemaDef());
 314         return true;
 315     }
 316
 317     function onEndShowStatusNetStyles($action) {
 318         $action->cssLink('plugins/OStatus/theme/base/css/ostatus.css');
 319         return true;
 320     }
 321
 322     function onEndShowStatusNetScripts($action) {
 323         $action->script('plugins/OStatus/js/ostatus.js');
 324         return true;
 325     }
 326
 327     /**
 328      * Override the "from ostatus" bit in notice lists to link to the
 329      * original post and show the domain it came from.
 330      *
 331      * @param Notice in $notice
 332      * @param string out &$name
 333      * @param string out &$url
 334      * @param string out &$title
 335      * @return mixed hook return code
 336      */
 337     function onStartNoticeSourceLink($notice, &$name, &$url, &$title)
 338     {
 339         if ($notice->source == 'ostatus') {
 340             if ($notice->url) {
 341                 $bits = parse_url($notice->url);
 342                 $domain = $bits['host'];
 343                 if (substr($domain, 0, 4) == 'www.') {
 344                     $name = substr($domain, 4);
 345                 } else {
 346                     $name = $domain;
 347                 }
 348
 349                 $url = $notice->url;
 350                 $title = sprintf(_m("Sent from %s via OStatus"), $domain);
 351                 return false;
 352             }
 353         }
 354     }
 355
 356     /**
 357      * Send incoming PuSH feeds for OStatus endpoints in for processing.
 358      *
 359      * @param FeedSub $feedsub
 360      * @param DOMDocument $feed
 361      * @return mixed hook return code
 362      */
 363     function onStartFeedSubReceive($feedsub, $feed)
 364     {
 365         $oprofile = Ostatus_profile::staticGet('feeduri', $feedsub->uri);
 366         if ($oprofile) {
 367             $oprofile->processFeed($feed, 'push');
 368         } else {
 369             common_log(LOG_DEBUG, "No ostatus profile for incoming feed $feedsub->uri");
 370         }
 371     }
 372
 373     /**
 374      * When about to subscribe to a remote user, start a server-to-server
 375      * PuSH subscription if needed. If we can't establish that, abort.
 376      *
 377      * @fixme If something else aborts later, we could end up with a stray
 378      *        PuSH subscription. This is relatively harmless, though.
 379      *
 380      * @param Profile $subscriber
 381      * @param Profile $other
 382      *
 383      * @return hook return code
 384      *
 385      * @throws Exception
 386      */
 387     function onStartSubscribe($subscriber, $other)
 388     {
 389         $user = User::staticGet('id', $subscriber->id);
 390
 391         if (empty($user)) {
 392             return true;
 393         }
 394
 395         $oprofile = Ostatus_profile::staticGet('profile_id', $other->id);
 396
 397         if (empty($oprofile)) {
 398             return true;
 399         }
 400
 401         if (!$oprofile->subscribe()) {
 402             throw new Exception(_m('Could not set up remote subscription.'));
 403         }
 404     }
 405
 406     /**
 407      * Having established a remote subscription, send a notification to the
 408      * remote OStatus profile's endpoint.
 409      *
 410      * @param Profile $subscriber
 411      * @param Profile $other
 412      *
 413      * @return hook return code
 414      *
 415      * @throws Exception
 416      */
 417     function onEndSubscribe($subscriber, $other)
 418     {
 419         $user = User::staticGet('id', $subscriber->id);
 420
 421         if (empty($user)) {
 422             return true;
 423         }
 424
 425         $oprofile = Ostatus_profile::staticGet('profile_id', $other->id);
 426
 427         if (empty($oprofile)) {
 428             return true;
 429         }
 430
 431         $act = new Activity();
 432
 433         $act->verb = ActivityVerb::FOLLOW;
 434
 435         $act->id   = TagURI::mint('follow:%d:%d:%s',
 436                                   $subscriber->id,
 437                                   $other->id,
 438                                   common_date_iso8601(time()));
 439
 440         $act->time    = time();
 441         $act->title   = _("Follow");
 442         $act->content = sprintf(_("%s is now following %s."),
 443                                $subscriber->getBestName(),
 444                                $other->getBestName());
 445
 446         $act->actor   = ActivityObject::fromProfile($subscriber);
 447         $act->object  = ActivityObject::fromProfile($other);
 448
 449         $oprofile->notifyActivity($act, $subscriber);
 450
 451         return true;
 452     }
 453
 454     /**
 455      * Notify remote server and garbage collect unused feeds on unsubscribe.
 456      * @fixme send these operations to background queues
 457      *
 458      * @param User $user
 459      * @param Profile $other
 460      * @return hook return value
 461      */
 462     function onEndUnsubscribe($profile, $other)
 463     {
 464         $user = User::staticGet('id', $profile->id);
 465
 466         if (empty($user)) {
 467             return true;
 468         }
 469
 470         $oprofile = Ostatus_profile::staticGet('profile_id', $other->id);
 471
 472         if (empty($oprofile)) {
 473             return true;
 474         }
 475
 476         // Drop the PuSH subscription if there are no other subscribers.
 477         $oprofile->garbageCollect();
 478
 479         $act = new Activity();
 480
 481         $act->verb = ActivityVerb::UNFOLLOW;
 482
 483         $act->id   = TagURI::mint('unfollow:%d:%d:%s',
 484                                   $profile->id,
 485                                   $other->id,
 486                                   common_date_iso8601(time()));
 487
 488         $act->time    = time();
 489         $act->title   = _("Unfollow");
 490         $act->content = sprintf(_("%s stopped following %s."),
 491                                $profile->getBestName(),
 492                                $other->getBestName());
 493
 494         $act->actor   = ActivityObject::fromProfile($profile);
 495         $act->object  = ActivityObject::fromProfile($other);
 496
 497         $oprofile->notifyActivity($act, $profile);
 498
 499         return true;
 500     }
 501
 502     /**
 503      * When one of our local users tries to join a remote group,
 504      * notify the remote server. If the notification is rejected,
 505      * deny the join.
 506      *
 507      * @param User_group $group
 508      * @param User $user
 509      *
 510      * @return mixed hook return value
 511      */
 512
 513     function onStartJoinGroup($group, $user)
 514     {
 515         $oprofile = Ostatus_profile::staticGet('group_id', $group->id);
 516         if ($oprofile) {
 517             if (!$oprofile->subscribe()) {
 518                 throw new Exception(_m('Could not set up remote group membership.'));
 519             }
 520
 521             $member = Profile::staticGet($user->id);
 522
 523             $act = new Activity();
 524             $act->id = TagURI::mint('join:%d:%d:%s',
 525                                     $member->id,
 526                                     $group->id,
 527                                     common_date_iso8601(time()));
 528
 529             $act->actor = ActivityObject::fromProfile($member);
 530             $act->verb = ActivityVerb::JOIN;
 531             $act->object = $oprofile->asActivityObject();
 532
 533             $act->time = time();
 534             $act->title = _m("Join");
 535             $act->content = sprintf(_m("%s has joined group %s."),
 536                                     $member->getBestName(),
 537                                     $oprofile->getBestName());
 538
 539             if ($oprofile->notifyActivity($act, $member)) {
 540                 return true;
 541             } else {
 542                 $oprofile->garbageCollect();
 543                 throw new Exception(_m("Failed joining remote group."));
 544             }
 545         }
 546     }
 547
 548     /**
 549      * When one of our local users leaves a remote group, notify the remote
 550      * server.
 551      *
 552      * @fixme Might be good to schedule a resend of the leave notification
 553      * if it failed due to a transitory error. We've canceled the local
 554      * membership already anyway, but if the remote server comes back up
 555      * it'll be left with a stray membership record.
 556      *
 557      * @param User_group $group
 558      * @param User $user
 559      *
 560      * @return mixed hook return value
 561      */
 562
 563     function onEndLeaveGroup($group, $user)
 564     {
 565         $oprofile = Ostatus_profile::staticGet('group_id', $group->id);
 566         if ($oprofile) {
 567             // Drop the PuSH subscription if there are no other subscribers.
 568             $oprofile->garbageCollect();
 569
 570
 571             $member = Profile::staticGet($user->id);
 572
 573             $act = new Activity();
 574             $act->id = TagURI::mint('leave:%d:%d:%s',
 575                                     $member->id,
 576                                     $group->id,
 577                                     common_date_iso8601(time()));
 578
 579             $act->actor = ActivityObject::fromProfile($member);
 580             $act->verb = ActivityVerb::LEAVE;
 581             $act->object = $oprofile->asActivityObject();
 582
 583             $act->time = time();
 584             $act->title = _m("Leave");
 585             $act->content = sprintf(_m("%s has left group %s."),
 586                                     $member->getBestName(),
 587                                     $oprofile->getBestName());
 588
 589             $oprofile->notifyActivity($act, $member);
 590         }
 591     }
 592
 593     /**
 594      * Notify remote users when their notices get favorited.
 595      *
 596      * @param Profile or User $profile of local user doing the faving
 597      * @param Notice $notice being favored
 598      * @return hook return value
 599      */
 600
 601     function onEndFavorNotice(Profile $profile, Notice $notice)
 602     {
 603         $user = User::staticGet('id', $profile->id);
 604
 605         if (empty($user)) {
 606             return true;
 607         }
 608
 609         $oprofile = Ostatus_profile::staticGet('profile_id', $notice->profile_id);
 610
 611         if (empty($oprofile)) {
 612             return true;
 613         }
 614
 615         $act = new Activity();
 616
 617         $act->verb = ActivityVerb::FAVORITE;
 618         $act->id   = TagURI::mint('favor:%d:%d:%s',
 619                                   $profile->id,
 620                                   $notice->id,
 621                                   common_date_iso8601(time()));
 622
 623         $act->time    = time();
 624         $act->title   = _("Favor");
 625         $act->content = sprintf(_("%s marked notice %s as a favorite."),
 626                                $profile->getBestName(),
 627                                $notice->uri);
 628
 629         $act->actor   = ActivityObject::fromProfile($profile);
 630         $act->object  = ActivityObject::fromNotice($notice);
 631
 632         $oprofile->notifyActivity($act, $profile);
 633
 634         return true;
 635     }
 636
 637     /**
 638      * Notify remote users when their notices get de-favorited.
 639      *
 640      * @param Profile $profile Profile person doing the de-faving
 641      * @param Notice  $notice  Notice being favored
 642      *
 643      * @return hook return value
 644      */
 645
 646     function onEndDisfavorNotice(Profile $profile, Notice $notice)
 647     {
 648         $user = User::staticGet('id', $profile->id);
 649
 650         if (empty($user)) {
 651             return true;
 652         }
 653
 654         $oprofile = Ostatus_profile::staticGet('profile_id', $notice->profile_id);
 655
 656         if (empty($oprofile)) {
 657             return true;
 658         }
 659
 660         $act = new Activity();
 661
 662         $act->verb = ActivityVerb::UNFAVORITE;
 663         $act->id   = TagURI::mint('disfavor:%d:%d:%s',
 664                                   $profile->id,
 665                                   $notice->id,
 666                                   common_date_iso8601(time()));
 667         $act->time    = time();
 668         $act->title   = _("Disfavor");
 669         $act->content = sprintf(_("%s marked notice %s as no longer a favorite."),
 670                                $profile->getBestName(),
 671                                $notice->uri);
 672
 673         $act->actor   = ActivityObject::fromProfile($profile);
 674         $act->object  = ActivityObject::fromNotice($notice);
 675
 676         $oprofile->notifyActivity($act, $profile);
 677
 678         return true;
 679     }
 680
 681     function onStartGetProfileUri($profile, &$uri)
 682     {
 683         $oprofile = Ostatus_profile::staticGet('profile_id', $profile->id);
 684         if (!empty($oprofile)) {
 685             $uri = $oprofile->uri;
 686             return false;
 687         }
 688         return true;
 689     }
 690
 691     function onStartUserGroupHomeUrl($group, &$url)
 692     {
 693         return $this->onStartUserGroupPermalink($group, $url);
 694     }
 695
 696     function onStartUserGroupPermalink($group, &$url)
 697     {
 698         $oprofile = Ostatus_profile::staticGet('group_id', $group->id);
 699         if ($oprofile) {
 700             // @fixme this should probably be in the user_group table
 701             // @fixme this uri not guaranteed to be a profile page
 702             $url = $oprofile->uri;
 703             return false;
 704         }
 705     }
 706
 707     function onStartShowSubscriptionsContent($action)
 708     {
 709         $this->showEntityRemoteSubscribe($action);
 710
 711         return true;
 712     }
 713
 714     function onStartShowAllContent($action)
 715     {
 716         $this->showEntityRemoteSubscribe($action);
 717
 718         return true;
 719     }
 720
 721     function showEntityRemoteSubscribe($action)
 722     {
 723         $user = common_current_user();
 724         if ($user && ($user->id == $action->profile->id)) {
 725             $action->elementStart('div', 'entity_actions');
 726             $action->elementStart('p', array('id' => 'entity_remote_subscribe',
 727                                              'class' => 'entity_subscribe'));
 728             $action->element('a', array('href' => common_local_url('ostatussub'),
 729                                         'class' => 'entity_remote_subscribe')
 730                                 , _m('Subscribe to remote user'));
 731             $action->elementEnd('p');
 732             $action->elementEnd('div');
 733         }
 734     }
 735
 736     /**
 737      * Ping remote profiles with updates to this profile.
 738      * Salmon pings are queued for background processing.
 739      */
 740     function onEndBroadcastProfile(Profile $profile)
 741     {
 742         $user = User::staticGet('id', $profile->id);
 743
 744         // Find foreign accounts I'm subscribed to that support Salmon pings.
 745         //
 746         // @fixme we could run updates through the PuSH feed too,
 747         // in which case we can skip Salmon pings to folks who
 748         // are also subscribed to me.
 749         $sql = "SELECT * FROM ostatus_profile " .
 750                "WHERE profile_id IN " .
 751                "(SELECT subscribed FROM subscription WHERE subscriber=%d) " .
 752                "OR group_id IN " .
 753                "(SELECT group_id FROM group_member WHERE profile_id=%d)";
 754         $oprofile = new Ostatus_profile();
 755         $oprofile->query(sprintf($sql, $profile->id, $profile->id));
 756
 757         if ($oprofile->N == 0) {
 758             common_log(LOG_DEBUG, "No OStatus remote subscribees for $profile->nickname");
 759             return true;
 760         }
 761
 762         $act = new Activity();
 763
 764         $act->verb = ActivityVerb::UPDATE_PROFILE;
 765         $act->id   = TagURI::mint('update-profile:%d:%s',
 766                                   $profile->id,
 767                                   common_date_iso8601(time()));
 768         $act->time    = time();
 769         $act->title   = _m("Profile update");
 770         $act->content = sprintf(_m("%s has updated their profile page."),
 771                                $profile->getBestName());
 772
 773         $act->actor   = ActivityObject::fromProfile($profile);
 774         $act->object  = $act->actor;
 775
 776         while ($oprofile->fetch()) {
 777             $oprofile->notifyDeferred($act, $profile);
 778         }
 779
 780         return true;
 781     }
 782 }