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             $output->elementEnd('li');
 208         }
 209
 210         return false;
 211     }
 212
 213     function onStartGroupSubscribe($output, $group)
 214     {
 215         $cur = common_current_user();
 216
 217         if (empty($cur)) {
 218             // Add an OStatus subscribe
 219             $output->elementStart('li', 'entity_subscribe');
 220             $url = common_local_url('ostatusinit',
 221                                     array('nickname' => $group->nickname));
 222             $output->element('a', array('href' => $url,
 223                                         'class' => 'entity_remote_subscribe'),
 224                                 _m('Join'));
 225
 226             $output->elementEnd('li');
 227         }
 228
 229         return false;
 230     }
 231
 232
 233     /**
 234      * Check if we've got remote replies to send via Salmon.
 235      *
 236      * @fixme push webfinger lookup & sending to a background queue
 237      * @fixme also detect short-form name for remote subscribees where not ambiguous
 238      */
 239
 240     function onEndNoticeSave($notice)
 241     {
 242     }
 243
 244     /**
 245      * Find any explicit remote mentions. Accepted forms:
 246      *   Webfinger: @user@example.com
 247      *   Profile link: @example.com/mublog/user
 248      * @param Profile $sender (os user?)
 249      * @param string $text input markup text
 250      * @param array &$mention in/out param: set of found mentions
 251      * @return boolean hook return value
 252      */
 253
 254     function onEndFindMentions($sender, $text, &$mentions)
 255     {
 256         $matches = array();
 257
 258         // Webfinger matches: @user@example.com
 259         if (preg_match_all('!(?:^|\s+)@((?:\w+\.)*\w+@(?:\w+\.)*\w+(?:\w+\-\w+)*\.\w+)!',
 260                        $text,
 261                        $wmatches,
 262                        PREG_OFFSET_CAPTURE)) {
 263             foreach ($wmatches[1] as $wmatch) {
 264                 list($target, $pos) = $wmatch;
 265                 $this->log(LOG_INFO, "Checking webfinger '$target'");
 266                 try {
 267                     $oprofile = Ostatus_profile::ensureWebfinger($target);
 268                     if ($oprofile && !$oprofile->isGroup()) {
 269                         $profile = $oprofile->localProfile();
 270                         $matches[$pos] = array('mentioned' => array($profile),
 271                                                'text' => $target,
 272                                                'position' => $pos,
 273                                                'url' => $profile->profileurl);
 274                     }
 275                 } catch (Exception $e) {
 276                     $this->log(LOG_ERR, "Webfinger check failed: " . $e->getMessage());
 277                 }
 278             }
 279         }
 280
 281         // Profile matches: @example.com/mublog/user
 282         if (preg_match_all('!(?:^|\s+)@((?:\w+\.)*\w+(?:\w+\-\w+)*\.\w+(?:/\w+)+)!',
 283                        $text,
 284                        $wmatches,
 285                        PREG_OFFSET_CAPTURE)) {
 286             foreach ($wmatches[1] as $wmatch) {
 287                 list($target, $pos) = $wmatch;
 288                 $schemes = array('http', 'https');
 289                 foreach ($schemes as $scheme) {
 290                     $url = "$scheme://$target";
 291                     $this->log(LOG_INFO, "Checking profile address '$url'");
 292                     try {
 293                         $oprofile = Ostatus_profile::ensureProfile($url);
 294                         if ($oprofile && !$oprofile->isGroup()) {
 295                             $profile = $oprofile->localProfile();
 296                             $matches[$pos] = array('mentioned' => array($profile),
 297                                                    'text' => $target,
 298                                                    'position' => $pos,
 299                                                    'url' => $profile->profileurl);
 300                             break;
 301                         }
 302                     } catch (Exception $e) {
 303                         $this->log(LOG_ERR, "Profile check failed: " . $e->getMessage());
 304                     }
 305                 }
 306             }
 307         }
 308
 309         foreach ($mentions as $i => $other) {
 310             // If we share a common prefix with a local user, override it!
 311             $pos = $other['position'];
 312             if (isset($matches[$pos])) {
 313                 $mentions[$i] = $matches[$pos];
 314                 unset($matches[$pos]);
 315             }
 316         }
 317         foreach ($matches as $mention) {
 318             $mentions[] = $mention;
 319         }
 320
 321         return true;
 322     }
 323
 324     /**
 325      * Make sure necessary tables are filled out.
 326      */
 327     function onCheckSchema() {
 328         $schema = Schema::get();
 329         $schema->ensureTable('ostatus_profile', Ostatus_profile::schemaDef());
 330         $schema->ensureTable('ostatus_source', Ostatus_source::schemaDef());
 331         $schema->ensureTable('feedsub', FeedSub::schemaDef());
 332         $schema->ensureTable('hubsub', HubSub::schemaDef());
 333         $schema->ensureTable('magicsig', Magicsig::schemaDef());
 334         return true;
 335     }
 336
 337     function onEndShowStatusNetStyles($action) {
 338         $action->cssLink(common_path('plugins/OStatus/theme/base/css/ostatus.css'));
 339         return true;
 340     }
 341
 342     function onEndShowStatusNetScripts($action) {
 343         $action->script(common_path('plugins/OStatus/js/ostatus.js'));
 344         return true;
 345     }
 346
 347     /**
 348      * Override the "from ostatus" bit in notice lists to link to the
 349      * original post and show the domain it came from.
 350      *
 351      * @param Notice in $notice
 352      * @param string out &$name
 353      * @param string out &$url
 354      * @param string out &$title
 355      * @return mixed hook return code
 356      */
 357     function onStartNoticeSourceLink($notice, &$name, &$url, &$title)
 358     {
 359         if ($notice->source == 'ostatus') {
 360             if ($notice->url) {
 361                 $bits = parse_url($notice->url);
 362                 $domain = $bits['host'];
 363                 if (substr($domain, 0, 4) == 'www.') {
 364                     $name = substr($domain, 4);
 365                 } else {
 366                     $name = $domain;
 367                 }
 368
 369                 $url = $notice->url;
 370                 $title = sprintf(_m("Sent from %s via OStatus"), $domain);
 371                 return false;
 372             }
 373         }
 374     }
 375
 376     /**
 377      * Send incoming PuSH feeds for OStatus endpoints in for processing.
 378      *
 379      * @param FeedSub $feedsub
 380      * @param DOMDocument $feed
 381      * @return mixed hook return code
 382      */
 383     function onStartFeedSubReceive($feedsub, $feed)
 384     {
 385         $oprofile = Ostatus_profile::staticGet('feeduri', $feedsub->uri);
 386         if ($oprofile) {
 387             $oprofile->processFeed($feed, 'push');
 388         } else {
 389             common_log(LOG_DEBUG, "No ostatus profile for incoming feed $feedsub->uri");
 390         }
 391     }
 392
 393     /**
 394      * When about to subscribe to a remote user, start a server-to-server
 395      * PuSH subscription if needed. If we can't establish that, abort.
 396      *
 397      * @fixme If something else aborts later, we could end up with a stray
 398      *        PuSH subscription. This is relatively harmless, though.
 399      *
 400      * @param Profile $subscriber
 401      * @param Profile $other
 402      *
 403      * @return hook return code
 404      *
 405      * @throws Exception
 406      */
 407     function onStartSubscribe($subscriber, $other)
 408     {
 409         $user = User::staticGet('id', $subscriber->id);
 410
 411         if (empty($user)) {
 412             return true;
 413         }
 414
 415         $oprofile = Ostatus_profile::staticGet('profile_id', $other->id);
 416
 417         if (empty($oprofile)) {
 418             return true;
 419         }
 420
 421         if (!$oprofile->subscribe()) {
 422             throw new Exception(_m('Could not set up remote subscription.'));
 423         }
 424     }
 425
 426     /**
 427      * Having established a remote subscription, send a notification to the
 428      * remote OStatus profile's endpoint.
 429      *
 430      * @param Profile $subscriber
 431      * @param Profile $other
 432      *
 433      * @return hook return code
 434      *
 435      * @throws Exception
 436      */
 437     function onEndSubscribe($subscriber, $other)
 438     {
 439         $user = User::staticGet('id', $subscriber->id);
 440
 441         if (empty($user)) {
 442             return true;
 443         }
 444
 445         $oprofile = Ostatus_profile::staticGet('profile_id', $other->id);
 446
 447         if (empty($oprofile)) {
 448             return true;
 449         }
 450
 451         $act = new Activity();
 452
 453         $act->verb = ActivityVerb::FOLLOW;
 454
 455         $act->id   = TagURI::mint('follow:%d:%d:%s',
 456                                   $subscriber->id,
 457                                   $other->id,
 458                                   common_date_iso8601(time()));
 459
 460         $act->time    = time();
 461         $act->title   = _("Follow");
 462         $act->content = sprintf(_("%s is now following %s."),
 463                                $subscriber->getBestName(),
 464                                $other->getBestName());
 465
 466         $act->actor   = ActivityObject::fromProfile($subscriber);
 467         $act->object  = ActivityObject::fromProfile($other);
 468
 469         $oprofile->notifyActivity($act, $subscriber);
 470
 471         return true;
 472     }
 473
 474     /**
 475      * Notify remote server and garbage collect unused feeds on unsubscribe.
 476      * @fixme send these operations to background queues
 477      *
 478      * @param User $user
 479      * @param Profile $other
 480      * @return hook return value
 481      */
 482     function onEndUnsubscribe($profile, $other)
 483     {
 484         $user = User::staticGet('id', $profile->id);
 485
 486         if (empty($user)) {
 487             return true;
 488         }
 489
 490         $oprofile = Ostatus_profile::staticGet('profile_id', $other->id);
 491
 492         if (empty($oprofile)) {
 493             return true;
 494         }
 495
 496         // Drop the PuSH subscription if there are no other subscribers.
 497         $oprofile->garbageCollect();
 498
 499         $act = new Activity();
 500
 501         $act->verb = ActivityVerb::UNFOLLOW;
 502
 503         $act->id   = TagURI::mint('unfollow:%d:%d:%s',
 504                                   $profile->id,
 505                                   $other->id,
 506                                   common_date_iso8601(time()));
 507
 508         $act->time    = time();
 509         $act->title   = _("Unfollow");
 510         $act->content = sprintf(_("%s stopped following %s."),
 511                                $profile->getBestName(),
 512                                $other->getBestName());
 513
 514         $act->actor   = ActivityObject::fromProfile($profile);
 515         $act->object  = ActivityObject::fromProfile($other);
 516
 517         $oprofile->notifyActivity($act, $profile);
 518
 519         return true;
 520     }
 521
 522     /**
 523      * When one of our local users tries to join a remote group,
 524      * notify the remote server. If the notification is rejected,
 525      * deny the join.
 526      *
 527      * @param User_group $group
 528      * @param User $user
 529      *
 530      * @return mixed hook return value
 531      */
 532
 533     function onStartJoinGroup($group, $user)
 534     {
 535         $oprofile = Ostatus_profile::staticGet('group_id', $group->id);
 536         if ($oprofile) {
 537             if (!$oprofile->subscribe()) {
 538                 throw new Exception(_m('Could not set up remote group membership.'));
 539             }
 540
 541             $member = Profile::staticGet($user->id);
 542
 543             $act = new Activity();
 544             $act->id = TagURI::mint('join:%d:%d:%s',
 545                                     $member->id,
 546                                     $group->id,
 547                                     common_date_iso8601(time()));
 548
 549             $act->actor = ActivityObject::fromProfile($member);
 550             $act->verb = ActivityVerb::JOIN;
 551             $act->object = $oprofile->asActivityObject();
 552
 553             $act->time = time();
 554             $act->title = _m("Join");
 555             $act->content = sprintf(_m("%s has joined group %s."),
 556                                     $member->getBestName(),
 557                                     $oprofile->getBestName());
 558
 559             if ($oprofile->notifyActivity($act, $member)) {
 560                 return true;
 561             } else {
 562                 $oprofile->garbageCollect();
 563                 throw new Exception(_m("Failed joining remote group."));
 564             }
 565         }
 566     }
 567
 568     /**
 569      * When one of our local users leaves a remote group, notify the remote
 570      * server.
 571      *
 572      * @fixme Might be good to schedule a resend of the leave notification
 573      * if it failed due to a transitory error. We've canceled the local
 574      * membership already anyway, but if the remote server comes back up
 575      * it'll be left with a stray membership record.
 576      *
 577      * @param User_group $group
 578      * @param User $user
 579      *
 580      * @return mixed hook return value
 581      */
 582
 583     function onEndLeaveGroup($group, $user)
 584     {
 585         $oprofile = Ostatus_profile::staticGet('group_id', $group->id);
 586         if ($oprofile) {
 587             // Drop the PuSH subscription if there are no other subscribers.
 588             $oprofile->garbageCollect();
 589
 590
 591             $member = Profile::staticGet($user->id);
 592
 593             $act = new Activity();
 594             $act->id = TagURI::mint('leave:%d:%d:%s',
 595                                     $member->id,
 596                                     $group->id,
 597                                     common_date_iso8601(time()));
 598
 599             $act->actor = ActivityObject::fromProfile($member);
 600             $act->verb = ActivityVerb::LEAVE;
 601             $act->object = $oprofile->asActivityObject();
 602
 603             $act->time = time();
 604             $act->title = _m("Leave");
 605             $act->content = sprintf(_m("%s has left group %s."),
 606                                     $member->getBestName(),
 607                                     $oprofile->getBestName());
 608
 609             $oprofile->notifyActivity($act, $member);
 610         }
 611     }
 612
 613     /**
 614      * Notify remote users when their notices get favorited.
 615      *
 616      * @param Profile or User $profile of local user doing the faving
 617      * @param Notice $notice being favored
 618      * @return hook return value
 619      */
 620
 621     function onEndFavorNotice(Profile $profile, Notice $notice)
 622     {
 623         $user = User::staticGet('id', $profile->id);
 624
 625         if (empty($user)) {
 626             return true;
 627         }
 628
 629         $oprofile = Ostatus_profile::staticGet('profile_id', $notice->profile_id);
 630
 631         if (empty($oprofile)) {
 632             return true;
 633         }
 634
 635         $act = new Activity();
 636
 637         $act->verb = ActivityVerb::FAVORITE;
 638         $act->id   = TagURI::mint('favor:%d:%d:%s',
 639                                   $profile->id,
 640                                   $notice->id,
 641                                   common_date_iso8601(time()));
 642
 643         $act->time    = time();
 644         $act->title   = _("Favor");
 645         $act->content = sprintf(_("%s marked notice %s as a favorite."),
 646                                $profile->getBestName(),
 647                                $notice->uri);
 648
 649         $act->actor   = ActivityObject::fromProfile($profile);
 650         $act->object  = ActivityObject::fromNotice($notice);
 651
 652         $oprofile->notifyActivity($act, $profile);
 653
 654         return true;
 655     }
 656
 657     /**
 658      * Notify remote users when their notices get de-favorited.
 659      *
 660      * @param Profile $profile Profile person doing the de-faving
 661      * @param Notice  $notice  Notice being favored
 662      *
 663      * @return hook return value
 664      */
 665
 666     function onEndDisfavorNotice(Profile $profile, Notice $notice)
 667     {
 668         $user = User::staticGet('id', $profile->id);
 669
 670         if (empty($user)) {
 671             return true;
 672         }
 673
 674         $oprofile = Ostatus_profile::staticGet('profile_id', $notice->profile_id);
 675
 676         if (empty($oprofile)) {
 677             return true;
 678         }
 679
 680         $act = new Activity();
 681
 682         $act->verb = ActivityVerb::UNFAVORITE;
 683         $act->id   = TagURI::mint('disfavor:%d:%d:%s',
 684                                   $profile->id,
 685                                   $notice->id,
 686                                   common_date_iso8601(time()));
 687         $act->time    = time();
 688         $act->title   = _("Disfavor");
 689         $act->content = sprintf(_("%s marked notice %s as no longer a favorite."),
 690                                $profile->getBestName(),
 691                                $notice->uri);
 692
 693         $act->actor   = ActivityObject::fromProfile($profile);
 694         $act->object  = ActivityObject::fromNotice($notice);
 695
 696         $oprofile->notifyActivity($act, $profile);
 697
 698         return true;
 699     }
 700
 701     function onStartGetProfileUri($profile, &$uri)
 702     {
 703         $oprofile = Ostatus_profile::staticGet('profile_id', $profile->id);
 704         if (!empty($oprofile)) {
 705             $uri = $oprofile->uri;
 706             return false;
 707         }
 708         return true;
 709     }
 710
 711     function onStartUserGroupHomeUrl($group, &$url)
 712     {
 713         return $this->onStartUserGroupPermalink($group, $url);
 714     }
 715
 716     function onStartUserGroupPermalink($group, &$url)
 717     {
 718         $oprofile = Ostatus_profile::staticGet('group_id', $group->id);
 719         if ($oprofile) {
 720             // @fixme this should probably be in the user_group table
 721             // @fixme this uri not guaranteed to be a profile page
 722             $url = $oprofile->uri;
 723             return false;
 724         }
 725     }
 726
 727     function onStartShowSubscriptionsContent($action)
 728     {
 729         $this->showEntityRemoteSubscribe($action);
 730
 731         return true;
 732     }
 733
 734     function onEndShowSubscriptionsMiniList($action)
 735     {
 736         $this->showEntityRemoteSubscribe($action);
 737
 738         return true;
 739     }
 740
 741     function onEndShowGroupsMiniList($action)
 742     {
 743         $this->showEntityRemoteSubscribe($action);
 744
 745         return true;
 746     }
 747
 748     function showEntityRemoteSubscribe($action)
 749     {
 750         $user = common_current_user();
 751         if ($user && ($user->id == $action->profile->id)) {
 752             $action->elementStart('div', 'entity_actions');
 753             $action->elementStart('p', array('id' => 'entity_remote_subscribe',
 754                                              'class' => 'entity_subscribe'));
 755             $action->element('a', array('href' => common_local_url('ostatussub'),
 756                                         'class' => 'entity_remote_subscribe')
 757                                 , _m('Remote'));
 758             $action->elementEnd('p');
 759             $action->elementEnd('div');
 760         }
 761     }
 762
 763     /**
 764      * Ping remote profiles with updates to this profile.
 765      * Salmon pings are queued for background processing.
 766      */
 767     function onEndBroadcastProfile(Profile $profile)
 768     {
 769         $user = User::staticGet('id', $profile->id);
 770
 771         // Find foreign accounts I'm subscribed to that support Salmon pings.
 772         //
 773         // @fixme we could run updates through the PuSH feed too,
 774         // in which case we can skip Salmon pings to folks who
 775         // are also subscribed to me.
 776         $sql = "SELECT * FROM ostatus_profile " .
 777                "WHERE profile_id IN " .
 778                "(SELECT subscribed FROM subscription WHERE subscriber=%d) " .
 779                "OR group_id IN " .
 780                "(SELECT group_id FROM group_member WHERE profile_id=%d)";
 781         $oprofile = new Ostatus_profile();
 782         $oprofile->query(sprintf($sql, $profile->id, $profile->id));
 783
 784         if ($oprofile->N == 0) {
 785             common_log(LOG_DEBUG, "No OStatus remote subscribees for $profile->nickname");
 786             return true;
 787         }
 788
 789         $act = new Activity();
 790
 791         $act->verb = ActivityVerb::UPDATE_PROFILE;
 792         $act->id   = TagURI::mint('update-profile:%d:%s',
 793                                   $profile->id,
 794                                   common_date_iso8601(time()));
 795         $act->time    = time();
 796         $act->title   = _m("Profile update");
 797         $act->content = sprintf(_m("%s has updated their profile page."),
 798                                $profile->getBestName());
 799
 800         $act->actor   = ActivityObject::fromProfile($profile);
 801         $act->object  = $act->actor;
 802
 803         while ($oprofile->fetch()) {
 804             $oprofile->notifyDeferred($act, $profile);
 805         }
 806
 807         return true;
 808     }
 809 }