3 * StatusNet - the distributed open-source microblogging tool
4 * Copyright (C) 2009-2010, StatusNet, Inc.
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.
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.
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/>.
21 * @package OStatusPlugin
22 * @maintainer Brion Vibber <brion@status.net>
25 class Ostatus_profile extends Memcached_DataObject
27 public $__table = 'ostatus_profile';
36 public $avatar; // remote URL of the last avatar we saved
41 public /*static*/ function staticGet($k, $v=null)
43 return parent::staticGet(__CLASS__, $k, $v);
47 * return table definition for DB_DataObject
49 * DB_DataObject needs to know something about the table to manipulate
50 * instances. This method provides all the DB_DataObject needs to know.
52 * @return array array of column definitions
57 return array('uri' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
58 'profile_id' => DB_DATAOBJECT_INT,
59 'group_id' => DB_DATAOBJECT_INT,
60 'feeduri' => DB_DATAOBJECT_STR,
61 'salmonuri' => DB_DATAOBJECT_STR,
62 'avatar' => DB_DATAOBJECT_STR,
63 'created' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL,
64 'modified' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL);
67 static function schemaDef()
69 return array(new ColumnDef('uri', 'varchar',
71 new ColumnDef('profile_id', 'integer',
73 new ColumnDef('group_id', 'integer',
75 new ColumnDef('feeduri', 'varchar',
77 new ColumnDef('salmonuri', 'text',
79 new ColumnDef('avatar', 'text',
81 new ColumnDef('created', 'datetime',
83 new ColumnDef('modified', 'datetime',
88 * return key definitions for DB_DataObject
90 * DB_DataObject needs to know about keys that the table has; this function
93 * @return array key definitions
98 return array_keys($this->keyTypes());
102 * return key definitions for Memcached_DataObject
104 * Our caching system uses the same key definitions, but uses a different
105 * method to get them.
107 * @return array key definitions
112 return array('uri' => 'K', 'profile_id' => 'U', 'group_id' => 'U', 'feeduri' => 'U');
115 function sequenceKey()
117 return array(false, false, false);
121 * Fetch the StatusNet-side profile for this feed
124 public function localProfile()
126 if ($this->profile_id) {
127 return Profile::staticGet('id', $this->profile_id);
133 * Fetch the StatusNet-side profile for this feed
136 public function localGroup()
138 if ($this->group_id) {
139 return User_group::staticGet('id', $this->group_id);
145 * Returns an ActivityObject describing this remote user or group profile.
146 * Can then be used to generate Atom chunks.
148 * @return ActivityObject
150 function asActivityObject()
152 if ($this->isGroup()) {
153 return ActivityObject::fromGroup($this->localGroup());
155 return ActivityObject::fromProfile($this->localProfile());
160 * Returns an XML string fragment with profile information as an
161 * Activity Streams noun object with the given element type.
163 * Assumes that 'activity' namespace has been previously defined.
165 * @fixme replace with wrappers on asActivityObject when it's got everything.
167 * @param string $element one of 'actor', 'subject', 'object', 'target'
170 function asActivityNoun($element)
172 if ($this->isGroup()) {
173 $noun = ActivityObject::fromGroup($this->localGroup());
174 return $noun->asString('activity:' . $element);
176 $noun = ActivityObject::fromProfile($this->localProfile());
177 return $noun->asString('activity:' . $element);
182 * @return boolean true if this is a remote group
186 if ($this->profile_id && !$this->group_id) {
188 } else if ($this->group_id && !$this->profile_id) {
190 } else if ($this->group_id && $this->profile_id) {
191 throw new ServerException("Invalid ostatus_profile state: both group and profile IDs set for $this->uri");
193 throw new ServerException("Invalid ostatus_profile state: both group and profile IDs empty for $this->uri");
198 * Send a subscription request to the hub for this feed.
199 * The hub will later send us a confirmation POST to /main/push/callback.
201 * @return bool true on success, false on failure
202 * @throws ServerException if feed state is not valid
204 public function subscribe()
206 $feedsub = FeedSub::ensureFeed($this->feeduri);
207 if ($feedsub->sub_state == 'active') {
208 // Active subscription, we don't need to do anything.
211 // Inactive or we got left in an inconsistent state.
212 // Run a subscription request to make sure we're current!
213 return $feedsub->subscribe();
218 * Send a PuSH unsubscription request to the hub for this feed.
219 * The hub will later send us a confirmation POST to /main/push/callback.
221 * @return bool true on success, false on failure
222 * @throws ServerException if feed state is not valid
224 public function unsubscribe() {
225 $feedsub = FeedSub::staticGet('uri', $this->feeduri);
226 if (!$feedsub || $feedsub->sub_state == '' || $feedsub->sub_state == 'inactive') {
227 // No active PuSH subscription, we can just leave it be.
230 // PuSH subscription is either active or in an indeterminate state.
231 // Send an unsubscribe.
232 return $feedsub->unsubscribe();
237 * Check if this remote profile has any active local subscriptions, and
238 * if not drop the PuSH subscription feed.
242 public function garbageCollect()
244 if ($this->isGroup()) {
245 $members = $this->localGroup()->getMembers(0, 1);
246 $count = $members->N;
248 $count = $this->localProfile()->subscriberCount();
251 common_log(LOG_INFO, "Unsubscribing from now-unused remote feed $this->feeduri");
252 $this->unsubscribe();
260 * Send an Activity Streams notification to the remote Salmon endpoint,
263 * @param Profile $actor Actor who did the activity
264 * @param string $verb Activity::SUBSCRIBE or Activity::JOIN
265 * @param Object $object object of the action; must define asActivityNoun($tag)
267 public function notify($actor, $verb, $object=null)
269 if (!($actor instanceof Profile)) {
270 $type = gettype($actor);
271 if ($type == 'object') {
272 $type = get_class($actor);
274 throw new ServerException("Invalid actor passed to " . __METHOD__ . ": " . $type);
276 if ($object == null) {
279 if ($this->salmonuri) {
282 $id = TagURI::mint('%s:%s:%s',
285 common_date_iso8601(time()));
287 // @fixme consolidate all these NS settings somewhere
288 $attributes = array('xmlns' => Activity::ATOM,
289 'xmlns:activity' => 'http://activitystrea.ms/spec/1.0/',
290 'xmlns:thr' => 'http://purl.org/syndication/thread/1.0',
291 'xmlns:georss' => 'http://www.georss.org/georss',
292 'xmlns:ostatus' => 'http://ostatus.org/schema/1.0',
293 'xmlns:poco' => 'http://portablecontacts.net/spec/1.0',
294 'xmlns:media' => 'http://purl.org/syndication/atommedia');
296 $entry = new XMLStringer();
297 $entry->elementStart('entry', $attributes);
298 $entry->element('id', null, $id);
299 $entry->element('title', null, $text);
300 $entry->element('summary', null, $text);
301 $entry->element('published', null, common_date_w3dtf(common_sql_now()));
303 $entry->element('activity:verb', null, $verb);
304 $entry->raw($actor->asAtomAuthor());
305 $entry->raw($actor->asActivityActor());
306 $entry->raw($object->asActivityNoun('object'));
307 $entry->elementEnd('entry');
309 $xml = $entry->getString();
310 common_log(LOG_INFO, "Posting to Salmon endpoint $this->salmonuri: $xml");
312 $salmon = new Salmon(); // ?
313 return $salmon->post($this->salmonuri, $xml, $actor);
319 * Send a Salmon notification ping immediately, and confirm that we got
320 * an acceptable response from the remote site.
322 * @param mixed $entry XML string, Notice, or Activity
323 * @return boolean success
325 public function notifyActivity($entry, $actor)
327 if ($this->salmonuri) {
328 $salmon = new Salmon();
329 return $salmon->post($this->salmonuri, $this->notifyPrepXml($entry), $actor);
336 * Queue a Salmon notification for later. If queues are disabled we'll
337 * send immediately but won't get the return value.
339 * @param mixed $entry XML string, Notice, or Activity
340 * @return boolean success
342 public function notifyDeferred($entry, $actor)
344 if ($this->salmonuri) {
345 $data = array('salmonuri' => $this->salmonuri,
346 'entry' => $this->notifyPrepXml($entry),
347 'actor' => $actor->id);
349 $qm = QueueManager::get();
350 return $qm->enqueue($data, 'salmon');
356 protected function notifyPrepXml($entry)
358 $preamble = '<?xml version="1.0" encoding="UTF-8" ?' . '>';
359 if (is_string($entry)) {
361 } else if ($entry instanceof Activity) {
362 return $preamble . $entry->asString(true);
363 } else if ($entry instanceof Notice) {
364 return $preamble . $entry->asAtomEntry(true, true);
366 throw new ServerException("Invalid type passed to Ostatus_profile::notify; must be XML string or Activity entry");
370 function getBestName()
372 if ($this->isGroup()) {
373 return $this->localGroup()->getBestName();
375 return $this->localProfile()->getBestName();
380 * Read and post notices for updates from the feed.
381 * Currently assumes that all items in the feed are new,
382 * coming from a PuSH hub.
384 * @param DOMDocument $doc
385 * @param string $source identifier ("push")
387 public function processFeed(DOMDocument $doc, $source)
389 $feed = $doc->documentElement;
391 if ($feed->localName == 'feed' && $feed->namespaceURI == Activity::ATOM) {
392 $this->processAtomFeed($feed, $source);
393 } else if ($feed->localName == 'rss') { // @fixme check namespace
394 $this->processRssFeed($feed, $source);
396 throw new Exception("Unknown feed format.");
400 public function processAtomFeed(DOMElement $feed, $source)
402 $entries = $feed->getElementsByTagNameNS(Activity::ATOM, 'entry');
403 if ($entries->length == 0) {
404 common_log(LOG_ERR, __METHOD__ . ": no entries in feed update, ignoring");
408 for ($i = 0; $i < $entries->length; $i++) {
409 $entry = $entries->item($i);
410 $this->processEntry($entry, $feed, $source);
414 public function processRssFeed(DOMElement $rss, $source)
416 $channels = $rss->getElementsByTagName('channel');
418 if ($channels->length == 0) {
419 throw new Exception("RSS feed without a channel.");
420 } else if ($channels->length > 1) {
421 common_log(LOG_WARNING, __METHOD__ . ": more than one channel in an RSS feed");
424 $channel = $channels->item(0);
426 $items = $channel->getElementsByTagName('item');
428 for ($i = 0; $i < $items->length; $i++) {
429 $item = $items->item($i);
430 $this->processEntry($item, $channel, $source);
435 * Process a posted entry from this feed source.
437 * @param DOMElement $entry
438 * @param DOMElement $feed for context
439 * @param string $source identifier ("push" or "salmon")
441 public function processEntry($entry, $feed, $source)
443 $activity = new Activity($entry, $feed);
445 if ($activity->verb == ActivityVerb::POST) {
446 $this->processPost($activity, $source);
448 common_log(LOG_INFO, "Ignoring activity with unrecognized verb $activity->verb");
453 * Process an incoming post activity from this remote feed.
454 * @param Activity $activity
455 * @param string $method 'push' or 'salmon'
456 * @return mixed saved Notice or false
457 * @fixme break up this function, it's getting nasty long
459 public function processPost($activity, $method)
461 if ($this->isGroup()) {
462 // A group feed will contain posts from multiple authors.
463 // @fixme validate these profiles in some way!
464 $oprofile = self::ensureActorProfile($activity);
465 if ($oprofile->isGroup()) {
466 // Groups can't post notices in StatusNet.
467 common_log(LOG_WARNING, "OStatus: skipping post with group listed as author: $oprofile->uri in feed from $this->uri");
471 $actor = $activity->actor;
474 // OK here! assume the default
475 } else if ($actor->id == $this->uri || $actor->link == $this->uri) {
476 $this->updateFromActivityObject($actor);
478 throw new Exception("Got an actor '{$actor->title}' ({$actor->id}) on single-user feed for {$this->uri}");
484 // It's not always an ActivityObject::NOTE, but... let's just say it is.
486 $note = $activity->object;
488 // The id URI will be used as a unique identifier for for the notice,
489 // protecting against duplicate saves. It isn't required to be a URL;
490 // tag: URIs for instance are found in Google Buzz feeds.
491 $sourceUri = $note->id;
492 $dupe = Notice::staticGet('uri', $sourceUri);
494 common_log(LOG_INFO, "OStatus: ignoring duplicate post: $sourceUri");
498 // We'll also want to save a web link to the original notice, if provided.
501 $sourceUrl = $note->link;
502 } else if ($activity->link) {
503 $sourceUrl = $activity->link;
504 } else if (preg_match('!^https?://!', $note->id)) {
505 $sourceUrl = $note->id;
508 // Use summary as fallback for content
510 if (!empty($note->content)) {
511 $sourceContent = $note->content;
512 } else if (!empty($note->summary)) {
513 $sourceContent = $note->summary;
514 } else if (!empty($note->title)) {
515 $sourceContent = $note->title;
517 // @fixme fetch from $sourceUrl?
518 throw new ClientException("No content for notice {$sourceUri}");
521 // Get (safe!) HTML and text versions of the content
523 $rendered = $this->purify($sourceContent);
524 $content = html_entity_decode(strip_tags($rendered));
526 $shortened = common_shorten_links($content);
528 // If it's too long, try using the summary, and make the
529 // HTML an attachment.
533 if (Notice::contentTooLong($shortened)) {
534 $attachment = $this->saveHTMLFile($note->title, $rendered);
535 $summary = html_entity_decode(strip_tags($note->summary));
536 if (empty($summary)) {
539 $shortSummary = common_shorten_links($summary);
540 if (Notice::contentTooLong($shortSummary)) {
541 $url = common_shorten_url($sourceUrl);
542 $shortSummary = substr($shortSummary,
544 Notice::maxContent() - (mb_strlen($url) + 2));
545 $content = $shortSummary . ' ' . $url;
547 // We mark up the attachment link specially for the HTML output
548 // so we can fold-out the full version inline.
549 $attachUrl = common_local_url('attachment',
550 array('attachment' => $attachment->id));
551 $rendered = common_render_text($shortSummary) .
552 '<a href="' . htmlspecialchars($attachUrl) .'"'.
553 ' class="attachment more"' .
554 ' title="'. htmlspecialchars(_m('Show more')) . '">' .
560 $options = array('is_local' => Notice::REMOTE_OMB,
563 'rendered' => $rendered,
564 'replies' => array(),
569 // Check for optional attributes...
571 if (!empty($activity->time)) {
572 $options['created'] = common_sql_date($activity->time);
575 if ($activity->context) {
576 // Any individual or group attn: targets?
577 $replies = $activity->context->attention;
578 $options['groups'] = $this->filterReplies($oprofile, $replies);
579 $options['replies'] = $replies;
581 // Maintain direct reply associations
582 // @fixme what about conversation ID?
583 if (!empty($activity->context->replyToID)) {
584 $orig = Notice::staticGet('uri',
585 $activity->context->replyToID);
587 $options['reply_to'] = $orig->id;
591 $location = $activity->context->location;
593 $options['lat'] = $location->lat;
594 $options['lon'] = $location->lon;
595 if ($location->location_id) {
596 $options['location_ns'] = $location->location_ns;
597 $options['location_id'] = $location->location_id;
602 // Atom categories <-> hashtags
603 foreach ($activity->categories as $cat) {
605 $term = common_canonical_tag($cat->term);
607 $options['tags'][] = $term;
612 // Atom enclosures -> attachment URLs
613 foreach ($activity->enclosures as $href) {
614 // @fixme save these locally or....?
615 $options['urls'][] = $href;
619 $saved = Notice::saveNew($oprofile->profile_id,
624 Ostatus_source::saveNew($saved, $this, $method);
625 if (!empty($attachment)) {
626 File_to_post::processNew($attachment->id, $saved->id);
629 } catch (Exception $e) {
630 common_log(LOG_ERR, "OStatus save of remote message $sourceUri failed: " . $e->getMessage());
633 common_log(LOG_INFO, "OStatus saved remote message $sourceUri as notice id $saved->id");
640 protected function purify($html)
642 require_once INSTALLDIR.'/extlib/htmLawed/htmLawed.php';
643 $config = array('safe' => 1,
644 'deny_attribute' => 'id,style,on*');
645 return htmLawed($html, $config);
649 * Filters a list of recipient ID URIs to just those for local delivery.
650 * @param Ostatus_profile local profile of sender
651 * @param array in/out &$attention_uris set of URIs, will be pruned on output
652 * @return array of group IDs
654 protected function filterReplies($sender, &$attention_uris)
656 common_log(LOG_DEBUG, "Original reply recipients: " . implode(', ', $attention_uris));
659 foreach ($attention_uris as $recipient) {
660 // Is the recipient a local user?
661 $user = User::staticGet('uri', $recipient);
663 // @fixme sender verification, spam etc?
664 $replies[] = $recipient;
668 // Is the recipient a remote group?
669 $oprofile = Ostatus_profile::staticGet('uri', $recipient);
671 if ($oprofile->isGroup()) {
672 // Deliver to local members of this remote group.
673 // @fixme sender verification?
674 $groups[] = $oprofile->group_id;
676 common_log(LOG_DEBUG, "Skipping reply to remote profile $recipient");
681 // Is the recipient a local group?
682 // @fixme uri on user_group isn't reliable yet
683 // $group = User_group::staticGet('uri', $recipient);
684 $id = OStatusPlugin::localGroupFromUrl($recipient);
686 $group = User_group::staticGet('id', $id);
688 // Deliver to all members of this local group if allowed.
689 $profile = $sender->localProfile();
690 if ($profile->isMember($group)) {
691 $groups[] = $group->id;
693 common_log(LOG_DEBUG, "Skipping reply to local group $group->nickname as sender $profile->id is not a member");
697 common_log(LOG_DEBUG, "Skipping reply to bogus group $recipient");
701 common_log(LOG_DEBUG, "Skipping reply to unrecognized profile $recipient");
704 $attention_uris = $replies;
705 common_log(LOG_DEBUG, "Local reply recipients: " . implode(', ', $replies));
706 common_log(LOG_DEBUG, "Local group recipients: " . implode(', ', $groups));
711 * Look up and if necessary create an Ostatus_profile for the remote entity
712 * with the given profile page URL. This should never return null -- you
713 * will either get an object or an exception will be thrown.
715 * @param string $profile_url
716 * @return Ostatus_profile
720 public static function ensureProfileURL($profile_url, $hints=array())
722 $oprofile = self::getFromProfileURL($profile_url);
724 if (!empty($oprofile)) {
728 $hints['profileurl'] = $profile_url;
733 $client = new HTTPClient();
734 $client->setHeader('Accept', 'text/html,application/xhtml+xml');
735 $response = $client->get($profile_url);
737 if (!$response->isOk()) {
738 throw new Exception("Could not reach profile page: " . $profile_url);
741 // Check if we have a non-canonical URL
743 $finalUrl = $response->getUrl();
745 if ($finalUrl != $profile_url) {
747 $hints['profileurl'] = $finalUrl;
749 $oprofile = self::getFromProfileURL($finalUrl);
751 if (!empty($oprofile)) {
756 // Try to get some hCard data
758 $body = $response->getBody();
760 $hcardHints = DiscoveryHints::hcardHints($body, $finalUrl);
762 if (!empty($hcardHints)) {
763 $hints = array_merge($hints, $hcardHints);
766 // Check if they've got an LRDD header
768 $lrdd = LinkHeader::getLink($response, 'lrdd', 'application/xrd+xml');
772 $xrd = Discovery::fetchXrd($lrdd);
773 $xrdHints = DiscoveryHints::fromXRD($xrd);
775 $hints = array_merge($hints, $xrdHints);
778 // If discovery found a feedurl (probably from LRDD), use it.
780 if (array_key_exists('feedurl', $hints)) {
781 return self::ensureFeedURL($hints['feedurl'], $hints);
784 // Get the feed URL from HTML
786 $discover = new FeedDiscovery();
788 $feedurl = $discover->discoverFromHTML($finalUrl, $body);
790 if (!empty($feedurl)) {
791 $hints['feedurl'] = $feedurl;
792 return self::ensureFeedURL($feedurl, $hints);
795 throw new Exception("Could not find a feed URL for profile page " . $finalUrl);
799 * Look up the Ostatus_profile, if present, for a remote entity with the
800 * given profile page URL. Will return null for both unknown and invalid
803 * @return mixed Ostatus_profile or null
804 * @throws Exception for local profiles
806 static function getFromProfileURL($profile_url)
808 $profile = Profile::staticGet('profileurl', $profile_url);
810 if (empty($profile)) {
814 // Is it a known Ostatus profile?
816 $oprofile = Ostatus_profile::staticGet('profile_id', $profile->id);
818 if (!empty($oprofile)) {
822 // Is it a local user?
824 $user = User::staticGet('id', $profile->id);
827 throw new Exception("'$profile_url' is the profile for local user '{$user->nickname}'.");
830 // Continue discovery; it's a remote profile
831 // for OMB or some other protocol, may also
838 * Look up and if necessary create an Ostatus_profile for remote entity
839 * with the given update feed. This should never return null -- you will
840 * either get an object or an exception will be thrown.
842 * @return Ostatus_profile
845 public static function ensureFeedURL($feed_url, $hints=array())
847 $discover = new FeedDiscovery();
849 $feeduri = $discover->discoverFromFeedURL($feed_url);
850 $hints['feedurl'] = $feeduri;
852 $huburi = $discover->getAtomLink('hub');
853 $hints['hub'] = $huburi;
854 $salmonuri = $discover->getAtomLink(Salmon::NS_REPLIES);
855 $hints['salmon'] = $salmonuri;
858 // We can only deal with folks with a PuSH hub
859 throw new FeedSubNoHubException();
862 $feedEl = $discover->root;
864 if ($feedEl->tagName == 'feed') {
865 return self::ensureAtomFeed($feedEl, $hints);
866 } else if ($feedEl->tagName == 'channel') {
867 return self::ensureRssChannel($feedEl, $hints);
869 throw new FeedSubBadXmlException($feeduri);
874 * Look up and, if necessary, create an Ostatus_profile for the remote
875 * profile with the given Atom feed - actually loaded from the feed.
876 * This should never return null -- you will either get an object or
877 * an exception will be thrown.
879 * @param DOMElement $feedEl root element of a loaded Atom feed
880 * @param array $hints additional discovery information passed from higher levels
881 * @fixme should this be marked public?
882 * @return Ostatus_profile
885 public static function ensureAtomFeed($feedEl, $hints)
887 // Try to get a profile from the feed activity:subject
889 $subject = ActivityUtils::child($feedEl, Activity::SUBJECT, Activity::SPEC);
891 if (!empty($subject)) {
892 $subjObject = new ActivityObject($subject);
893 return self::ensureActivityObjectProfile($subjObject, $hints);
896 // Otherwise, try the feed author
898 $author = ActivityUtils::child($feedEl, Activity::AUTHOR, Activity::ATOM);
900 if (!empty($author)) {
901 $authorObject = new ActivityObject($author);
902 return self::ensureActivityObjectProfile($authorObject, $hints);
905 // Sheesh. Not a very nice feed! Let's try fingerpoken in the
908 $entries = $feedEl->getElementsByTagNameNS(Activity::ATOM, 'entry');
910 if (!empty($entries) && $entries->length > 0) {
912 $entry = $entries->item(0);
914 $actor = ActivityUtils::child($entry, Activity::ACTOR, Activity::SPEC);
916 if (!empty($actor)) {
917 $actorObject = new ActivityObject($actor);
918 return self::ensureActivityObjectProfile($actorObject, $hints);
922 $author = ActivityUtils::child($entry, Activity::AUTHOR, Activity::ATOM);
924 if (!empty($author)) {
925 $authorObject = new ActivityObject($author);
926 return self::ensureActivityObjectProfile($authorObject, $hints);
930 // XXX: make some educated guesses here
932 throw new FeedSubException("Can't find enough profile information to make a feed.");
936 * Look up and, if necessary, create an Ostatus_profile for the remote
937 * profile with the given RSS feed - actually loaded from the feed.
938 * This should never return null -- you will either get an object or
939 * an exception will be thrown.
941 * @param DOMElement $feedEl root element of a loaded RSS feed
942 * @param array $hints additional discovery information passed from higher levels
943 * @fixme should this be marked public?
944 * @return Ostatus_profile
947 public static function ensureRssChannel($feedEl, $hints)
949 // Special-case for Posterous. They have some nice metadata in their
950 // posterous:author elements. We should use them instead of the channel.
952 $items = $feedEl->getElementsByTagName('item');
954 if ($items->length > 0) {
955 $item = $items->item(0);
956 $authorEl = ActivityUtils::child($item, ActivityObject::AUTHOR, ActivityObject::POSTEROUS);
957 if (!empty($authorEl)) {
958 $obj = ActivityObject::fromPosterousAuthor($authorEl);
959 // Posterous has multiple authors per feed, and multiple feeds
960 // per author. We check if this is the "main" feed for this author.
961 if (array_key_exists('profileurl', $hints) &&
962 !empty($obj->poco) &&
963 common_url_to_nickname($hints['profileurl']) == $obj->poco->preferredUsername) {
964 return self::ensureActivityObjectProfile($obj, $hints);
969 // @fixme we should check whether this feed has elements
970 // with different <author> or <dc:creator> elements, and... I dunno.
971 // Do something about that.
973 $obj = ActivityObject::fromRssChannel($feedEl);
975 return self::ensureActivityObjectProfile($obj, $hints);
979 * Download and update given avatar image
982 * @throws Exception in various failure cases
984 protected function updateAvatar($url)
986 if ($url == $this->avatar) {
987 // We've already got this one.
990 if (!common_valid_http_url($url)) {
991 throw new ServerException(_m("Invalid avatar URL %s"), $url);
994 if ($this->isGroup()) {
995 $self = $this->localGroup();
997 $self = $this->localProfile();
1000 throw new ServerException(sprintf(
1001 _m("Tried to update avatar for unsaved remote profile %s"),
1005 // @fixme this should be better encapsulated
1006 // ripped from oauthstore.php (for old OMB client)
1007 $temp_filename = tempnam(sys_get_temp_dir(), 'listener_avatar');
1008 if (!copy($url, $temp_filename)) {
1009 throw new ServerException(sprintf(_m("Unable to fetch avatar from %s"), $url));
1012 if ($this->isGroup()) {
1013 $id = $this->group_id;
1015 $id = $this->profile_id;
1017 // @fixme should we be using different ids?
1018 $imagefile = new ImageFile($id, $temp_filename);
1019 $filename = Avatar::filename($id,
1020 image_type_to_extension($imagefile->type),
1022 common_timestamp());
1023 rename($temp_filename, Avatar::path($filename));
1024 $self->setOriginal($filename);
1026 $orig = clone($this);
1027 $this->avatar = $url;
1028 $this->update($orig);
1032 * Pull avatar URL from ActivityObject or profile hints
1034 * @param ActivityObject $object
1035 * @param array $hints
1036 * @return mixed URL string or false
1039 protected static function getActivityObjectAvatar($object, $hints=array())
1041 if ($object->avatarLinks) {
1043 // Take the exact-size avatar, or the largest avatar, or the first avatar if all sizeless
1044 foreach ($object->avatarLinks as $avatar) {
1045 if ($avatar->width == AVATAR_PROFILE_SIZE && $avatar->height = AVATAR_PROFILE_SIZE) {
1050 if (!$best || $avatar->width > $best->width) {
1055 } else if (array_key_exists('avatar', $hints)) {
1056 return $hints['avatar'];
1062 * Get an appropriate avatar image source URL, if available.
1064 * @param ActivityObject $actor
1065 * @param DOMElement $feed
1069 protected static function getAvatar($actor, $feed)
1073 if ($actor->avatar) {
1074 $url = trim($actor->avatar);
1077 // Check <atom:logo> and <atom:icon> on the feed
1078 $els = $feed->childNodes();
1079 if ($els && $els->length) {
1080 for ($i = 0; $i < $els->length; $i++) {
1081 $el = $els->item($i);
1082 if ($el->namespaceURI == Activity::ATOM) {
1083 if (empty($url) && $el->localName == 'logo') {
1084 $url = trim($el->textContent);
1087 if (empty($icon) && $el->localName == 'icon') {
1088 // Use as a fallback
1089 $icon = trim($el->textContent);
1094 if ($icon && !$url) {
1099 $opts = array('allowed_schemes' => array('http', 'https'));
1100 if (Validate::uri($url, $opts)) {
1104 return common_path('plugins/OStatus/images/96px-Feed-icon.svg.png');
1108 * Fetch, or build if necessary, an Ostatus_profile for the actor
1109 * in a given Activity Streams activity.
1110 * This should never return null -- you will either get an object or
1111 * an exception will be thrown.
1113 * @param Activity $activity
1114 * @param string $feeduri if we already know the canonical feed URI!
1115 * @param string $salmonuri if we already know the salmon return channel URI
1116 * @return Ostatus_profile
1120 public static function ensureActorProfile($activity, $hints=array())
1122 return self::ensureActivityObjectProfile($activity->actor, $hints);
1126 * Fetch, or build if necessary, an Ostatus_profile for the profile
1127 * in a given Activity Streams object (can be subject, actor, or object).
1128 * This should never return null -- you will either get an object or
1129 * an exception will be thrown.
1131 * @param ActivityObject $object
1132 * @param array $hints additional discovery information passed from higher levels
1133 * @return Ostatus_profile
1137 public static function ensureActivityObjectProfile($object, $hints=array())
1139 $profile = self::getActivityObjectProfile($object);
1141 $profile->updateFromActivityObject($object, $hints);
1143 $profile = self::createActivityObjectProfile($object, $hints);
1149 * @param Activity $activity
1150 * @return mixed matching Ostatus_profile or false if none known
1151 * @throws ServerException if feed info invalid
1153 public static function getActorProfile($activity)
1155 return self::getActivityObjectProfile($activity->actor);
1159 * @param ActivityObject $activity
1160 * @return mixed matching Ostatus_profile or false if none known
1161 * @throws ServerException if feed info invalid
1163 protected static function getActivityObjectProfile($object)
1165 $uri = self::getActivityObjectProfileURI($object);
1166 return Ostatus_profile::staticGet('uri', $uri);
1170 * Get the identifier URI for the remote entity described
1171 * by this ActivityObject. This URI is *not* guaranteed to be
1172 * a resolvable HTTP/HTTPS URL.
1174 * @param ActivityObject $object
1176 * @throws ServerException if feed info invalid
1178 protected static function getActivityObjectProfileURI($object)
1181 if (ActivityUtils::validateUri($object->id)) {
1186 // If the id is missing or invalid (we've seen feeds mistakenly listing
1187 // things like local usernames in that field) then we'll use the profile
1188 // page link, if valid.
1189 if ($object->link && common_valid_http_url($object->link)) {
1190 return $object->link;
1192 throw new ServerException("No author ID URI found");
1196 * @fixme validate stuff somewhere
1200 * Create local ostatus_profile and profile/user_group entries for
1201 * the provided remote user or group.
1202 * This should never return null -- you will either get an object or
1203 * an exception will be thrown.
1205 * @param ActivityObject $object
1206 * @param array $hints
1208 * @return Ostatus_profile
1210 protected static function createActivityObjectProfile($object, $hints=array())
1212 $homeuri = $object->id;
1216 common_log(LOG_DEBUG, __METHOD__ . " empty actor profile URI: " . var_export($activity, true));
1217 throw new Exception("No profile URI");
1220 $user = User::staticGet('uri', $homeuri);
1222 throw new Exception("Local user can't be referenced as remote.");
1225 if (OStatusPlugin::localGroupFromUrl($homeuri)) {
1226 throw new Exception("Local group can't be referenced as remote.");
1229 if (array_key_exists('feedurl', $hints)) {
1230 $feeduri = $hints['feedurl'];
1232 $discover = new FeedDiscovery();
1233 $feeduri = $discover->discoverFromURL($homeuri);
1236 if (array_key_exists('salmon', $hints)) {
1237 $salmonuri = $hints['salmon'];
1240 $discover = new FeedDiscovery();
1241 $discover->discoverFromFeedURL($hints['feedurl']);
1243 $salmonuri = $discover->getAtomLink(Salmon::NS_REPLIES);
1246 if (array_key_exists('hub', $hints)) {
1247 $huburi = $hints['hub'];
1250 $discover = new FeedDiscovery();
1251 $discover->discoverFromFeedURL($hints['feedurl']);
1253 $huburi = $discover->getAtomLink('hub');
1257 // We can only deal with folks with a PuSH hub
1258 throw new FeedSubNoHubException();
1261 $oprofile = new Ostatus_profile();
1263 $oprofile->uri = $homeuri;
1264 $oprofile->feeduri = $feeduri;
1265 $oprofile->salmonuri = $salmonuri;
1267 $oprofile->created = common_sql_now();
1268 $oprofile->modified = common_sql_now();
1270 if ($object->type == ActivityObject::PERSON) {
1271 $profile = new Profile();
1272 $profile->created = common_sql_now();
1273 self::updateProfile($profile, $object, $hints);
1275 $oprofile->profile_id = $profile->insert();
1276 if (!$oprofile->profile_id) {
1277 throw new ServerException("Can't save local profile");
1280 $group = new User_group();
1281 $group->uri = $homeuri;
1282 $group->created = common_sql_now();
1283 self::updateGroup($group, $object, $hints);
1285 $oprofile->group_id = $group->insert();
1286 if (!$oprofile->group_id) {
1287 throw new ServerException("Can't save local profile");
1291 $ok = $oprofile->insert();
1294 $avatar = self::getActivityObjectAvatar($object, $hints);
1296 $oprofile->updateAvatar($avatar);
1300 throw new ServerException("Can't save OStatus profile");
1305 * Save any updated profile information to our local copy.
1306 * @param ActivityObject $object
1307 * @param array $hints
1309 public function updateFromActivityObject($object, $hints=array())
1311 if ($this->isGroup()) {
1312 $group = $this->localGroup();
1313 self::updateGroup($group, $object, $hints);
1315 $profile = $this->localProfile();
1316 self::updateProfile($profile, $object, $hints);
1318 $avatar = self::getActivityObjectAvatar($object, $hints);
1320 $this->updateAvatar($avatar);
1324 protected static function updateProfile($profile, $object, $hints=array())
1326 $orig = clone($profile);
1328 $profile->nickname = self::getActivityObjectNickname($object, $hints);
1330 if (!empty($object->title)) {
1331 $profile->fullname = $object->title;
1332 } else if (array_key_exists('fullname', $hints)) {
1333 $profile->fullname = $hints['fullname'];
1336 if (!empty($object->link)) {
1337 $profile->profileurl = $object->link;
1338 } else if (array_key_exists('profileurl', $hints)) {
1339 $profile->profileurl = $hints['profileurl'];
1340 } else if (Validate::uri($object->id, array('allowed_schemes' => array('http', 'https')))) {
1341 $profile->profileurl = $object->id;
1344 $profile->bio = self::getActivityObjectBio($object, $hints);
1345 $profile->location = self::getActivityObjectLocation($object, $hints);
1346 $profile->homepage = self::getActivityObjectHomepage($object, $hints);
1348 if (!empty($object->geopoint)) {
1349 $location = ActivityContext::locationFromPoint($object->geopoint);
1350 if (!empty($location)) {
1351 $profile->lat = $location->lat;
1352 $profile->lon = $location->lon;
1356 // @fixme tags/categories
1357 // @todo tags from categories
1360 common_log(LOG_DEBUG, "Updating OStatus profile $profile->id from remote info $object->id: " . var_export($object, true) . var_export($hints, true));
1361 $profile->update($orig);
1365 protected static function updateGroup($group, $object, $hints=array())
1367 $orig = clone($group);
1369 $group->nickname = self::getActivityObjectNickname($object, $hints);
1370 $group->fullname = $object->title;
1372 if (!empty($object->link)) {
1373 $group->mainpage = $object->link;
1374 } else if (array_key_exists('profileurl', $hints)) {
1375 $group->mainpage = $hints['profileurl'];
1378 // @todo tags from categories
1379 $group->description = self::getActivityObjectBio($object, $hints);
1380 $group->location = self::getActivityObjectLocation($object, $hints);
1381 $group->homepage = self::getActivityObjectHomepage($object, $hints);
1384 common_log(LOG_DEBUG, "Updating OStatus group $group->id from remote info $object->id: " . var_export($object, true) . var_export($hints, true));
1385 $group->update($orig);
1389 protected static function getActivityObjectHomepage($object, $hints=array())
1392 $poco = $object->poco;
1394 if (!empty($poco)) {
1395 $url = $poco->getPrimaryURL();
1396 if ($url && $url->type == 'homepage') {
1397 $homepage = $url->value;
1401 // @todo Try for a another PoCo URL?
1406 protected static function getActivityObjectLocation($object, $hints=array())
1410 if (!empty($object->poco) &&
1411 isset($object->poco->address->formatted)) {
1412 $location = $object->poco->address->formatted;
1413 } else if (array_key_exists('location', $hints)) {
1414 $location = $hints['location'];
1417 if (!empty($location)) {
1418 if (mb_strlen($location) > 255) {
1419 $location = mb_substr($note, 0, 255 - 3) . ' … ';
1423 // @todo Try to find location some othe way? Via goerss point?
1428 protected static function getActivityObjectBio($object, $hints=array())
1432 if (!empty($object->poco)) {
1433 $note = $object->poco->note;
1434 } else if (array_key_exists('bio', $hints)) {
1435 $note = $hints['bio'];
1438 if (!empty($note)) {
1439 if (Profile::bioTooLong($note)) {
1440 // XXX: truncate ok?
1441 $bio = mb_substr($note, 0, Profile::maxBio() - 3) . ' … ';
1447 // @todo Try to get bio info some other way?
1452 protected static function getActivityObjectNickname($object, $hints=array())
1454 if ($object->poco) {
1455 if (!empty($object->poco->preferredUsername)) {
1456 return common_nicknamize($object->poco->preferredUsername);
1460 if (!empty($object->nickname)) {
1461 return common_nicknamize($object->nickname);
1464 if (array_key_exists('nickname', $hints)) {
1465 return $hints['nickname'];
1468 // Try the profile url (like foo.example.com or example.com/user/foo)
1470 $profileUrl = ($object->link) ? $object->link : $hints['profileurl'];
1472 if (!empty($profileUrl)) {
1473 $nickname = self::nicknameFromURI($profileUrl);
1476 // Try the URI (may be a tag:, http:, acct:, ...
1478 if (empty($nickname)) {
1479 $nickname = self::nicknameFromURI($object->id);
1482 // Try a Webfinger if one was passed (way) down
1484 if (empty($nickname)) {
1485 if (array_key_exists('webfinger', $hints)) {
1486 $nickname = self::nicknameFromURI($hints['webfinger']);
1492 if (empty($nickname)) {
1493 $nickname = common_nicknamize($object->title);
1499 protected static function nicknameFromURI($uri)
1501 preg_match('/(\w+):/', $uri, $matches);
1503 $protocol = $matches[1];
1505 switch ($protocol) {
1508 if (preg_match("/^$protocol:(.*)?@.*\$/", $uri, $matches)) {
1509 return common_canonical_nickname($matches[1]);
1513 return common_url_to_nickname($uri);
1521 * Look up, and if necessary create, an Ostatus_profile for the remote
1522 * entity with the given webfinger address.
1523 * This should never return null -- you will either get an object or
1524 * an exception will be thrown.
1526 * @param string $addr webfinger address
1527 * @return Ostatus_profile
1528 * @throws Exception on error conditions
1530 public static function ensureWebfinger($addr)
1532 // First, try the cache
1534 $uri = self::cacheGet(sprintf('ostatus_profile:webfinger:%s', $addr));
1536 if ($uri !== false) {
1537 if (is_null($uri)) {
1538 // Negative cache entry
1539 throw new Exception('Not a valid webfinger address.');
1541 $oprofile = Ostatus_profile::staticGet('uri', $uri);
1542 if (!empty($oprofile)) {
1547 // Try looking it up
1549 $oprofile = Ostatus_profile::staticGet('uri', 'acct:'.$addr);
1551 if (!empty($oprofile)) {
1552 self::cacheSet(sprintf('ostatus_profile:webfinger:%s', $addr), $oprofile->uri);
1556 // Now, try some discovery
1558 $disco = new Discovery();
1561 $xrd = $disco->lookup($addr);
1562 } catch (Exception $e) {
1563 // Save negative cache entry so we don't waste time looking it up again.
1564 // @fixme distinguish temporary failures?
1565 self::cacheSet(sprintf('ostatus_profile:webfinger:%s', $addr), null);
1566 throw new Exception('Not a valid webfinger address.');
1569 $hints = array('webfinger' => $addr);
1571 $dhints = DiscoveryHints::fromXRD($xrd);
1573 $hints = array_merge($hints, $dhints);
1575 // If there's an Hcard, let's grab its info
1577 if (array_key_exists('hcard', $hints)) {
1578 if (!array_key_exists('profileurl', $hints) ||
1579 $hints['hcard'] != $hints['profileurl']) {
1580 $hcardHints = DiscoveryHints::fromHcardUrl($hints['hcard']);
1581 $hints = array_merge($hcardHints, $hints);
1585 // If we got a feed URL, try that
1587 if (array_key_exists('feedurl', $hints)) {
1589 common_log(LOG_INFO, "Discovery on acct:$addr with feed URL " . $hints['feedurl']);
1590 $oprofile = self::ensureFeedURL($hints['feedurl'], $hints);
1591 self::cacheSet(sprintf('ostatus_profile:webfinger:%s', $addr), $oprofile->uri);
1593 } catch (Exception $e) {
1594 common_log(LOG_WARNING, "Failed creating profile from feed URL '$feedUrl': " . $e->getMessage());
1599 // If we got a profile page, try that!
1601 if (array_key_exists('profileurl', $hints)) {
1603 common_log(LOG_INFO, "Discovery on acct:$addr with profile URL $profileUrl");
1604 $oprofile = self::ensureProfileURL($hints['profileurl'], $hints);
1605 self::cacheSet(sprintf('ostatus_profile:webfinger:%s', $addr), $oprofile->uri);
1607 } catch (Exception $e) {
1608 common_log(LOG_WARNING, "Failed creating profile from profile URL '$profileUrl': " . $e->getMessage());
1616 if (array_key_exists('salmon', $hints)) {
1618 $salmonEndpoint = $hints['salmon'];
1620 // An account URL, a salmon endpoint, and a dream? Not much to go
1621 // on, but let's give it a try
1623 $uri = 'acct:'.$addr;
1625 $profile = new Profile();
1627 $profile->nickname = self::nicknameFromUri($uri);
1628 $profile->created = common_sql_now();
1630 if (isset($profileUrl)) {
1631 $profile->profileurl = $profileUrl;
1634 $profile_id = $profile->insert();
1637 common_log_db_error($profile, 'INSERT', __FILE__);
1638 throw new Exception("Couldn't save profile for '$addr'");
1641 $oprofile = new Ostatus_profile();
1643 $oprofile->uri = $uri;
1644 $oprofile->salmonuri = $salmonEndpoint;
1645 $oprofile->profile_id = $profile_id;
1646 $oprofile->created = common_sql_now();
1648 if (isset($feedUrl)) {
1649 $profile->feeduri = $feedUrl;
1652 $result = $oprofile->insert();
1655 common_log_db_error($oprofile, 'INSERT', __FILE__);
1656 throw new Exception("Couldn't save ostatus_profile for '$addr'");
1659 self::cacheSet(sprintf('ostatus_profile:webfinger:%s', $addr), $oprofile->uri);
1663 throw new Exception("Couldn't find a valid profile for '$addr'");
1667 * Store the full-length scrubbed HTML of a remote notice to an attachment
1668 * file on our server. We'll link to this at the end of the cropped version.
1670 * @param string $title plaintext for HTML page's title
1671 * @param string $rendered HTML fragment for HTML page's body
1674 function saveHTMLFile($title, $rendered)
1676 $final = sprintf("<!DOCTYPE html>\n<html><head><title>%s</title></head>".
1677 '<body>%s</body></html>',
1678 htmlspecialchars($title),
1681 $filename = File::filename($this->localProfile(),
1682 'ostatus', // ignored?
1685 $filepath = File::path($filename);
1687 file_put_contents($filepath, $final);
1691 $file->filename = $filename;
1692 $file->url = File::url($filename);
1693 $file->size = filesize($filepath);
1694 $file->date = time();
1695 $file->mimetype = 'text/html';
1697 $file_id = $file->insert();
1699 if ($file_id === false) {
1700 common_log_db_error($file, "INSERT", __FILE__);
1701 throw new ServerException(_('Could not store HTML content of long post as file.'));