gnu-social/plugins/OStatus/classes/Ostatus_profile.php
Evan Prodromou 25cb917523 Allow PuSH posts without author information
Superfeedr (sp.?) posts entries without author information. We can
assume that this is intended to be by the original author.
Re-structured the checks for entries that come in by PuSH so they can
either have no author or an empty author, but not a different author.
2010-03-20 08:25:56 -05:00

1575 lines
51 KiB
PHP

<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2009-2010, StatusNet, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @package OStatusPlugin
* @maintainer Brion Vibber <brion@status.net>
*/
class Ostatus_profile extends Memcached_DataObject
{
public $__table = 'ostatus_profile';
public $uri;
public $profile_id;
public $group_id;
public $feeduri;
public $salmonuri;
public $avatar; // remote URL of the last avatar we saved
public $created;
public $modified;
public /*static*/ function staticGet($k, $v=null)
{
return parent::staticGet(__CLASS__, $k, $v);
}
/**
* return table definition for DB_DataObject
*
* DB_DataObject needs to know something about the table to manipulate
* instances. This method provides all the DB_DataObject needs to know.
*
* @return array array of column definitions
*/
function table()
{
return array('uri' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
'profile_id' => DB_DATAOBJECT_INT,
'group_id' => DB_DATAOBJECT_INT,
'feeduri' => DB_DATAOBJECT_STR,
'salmonuri' => DB_DATAOBJECT_STR,
'avatar' => DB_DATAOBJECT_STR,
'created' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL,
'modified' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL);
}
static function schemaDef()
{
return array(new ColumnDef('uri', 'varchar',
255, false, 'PRI'),
new ColumnDef('profile_id', 'integer',
null, true, 'UNI'),
new ColumnDef('group_id', 'integer',
null, true, 'UNI'),
new ColumnDef('feeduri', 'varchar',
255, true, 'UNI'),
new ColumnDef('salmonuri', 'text',
null, true),
new ColumnDef('avatar', 'text',
null, true),
new ColumnDef('created', 'datetime',
null, false),
new ColumnDef('modified', 'datetime',
null, false));
}
/**
* return key definitions for DB_DataObject
*
* DB_DataObject needs to know about keys that the table has; this function
* defines them.
*
* @return array key definitions
*/
function keys()
{
return array_keys($this->keyTypes());
}
/**
* return key definitions for Memcached_DataObject
*
* Our caching system uses the same key definitions, but uses a different
* method to get them.
*
* @return array key definitions
*/
function keyTypes()
{
return array('uri' => 'K', 'profile_id' => 'U', 'group_id' => 'U', 'feeduri' => 'U');
}
function sequenceKey()
{
return array(false, false, false);
}
/**
* Fetch the StatusNet-side profile for this feed
* @return Profile
*/
public function localProfile()
{
if ($this->profile_id) {
return Profile::staticGet('id', $this->profile_id);
}
return null;
}
/**
* Fetch the StatusNet-side profile for this feed
* @return Profile
*/
public function localGroup()
{
if ($this->group_id) {
return User_group::staticGet('id', $this->group_id);
}
return null;
}
/**
* Returns an ActivityObject describing this remote user or group profile.
* Can then be used to generate Atom chunks.
*
* @return ActivityObject
*/
function asActivityObject()
{
if ($this->isGroup()) {
return ActivityObject::fromGroup($this->localGroup());
} else {
return ActivityObject::fromProfile($this->localProfile());
}
}
/**
* Returns an XML string fragment with profile information as an
* Activity Streams noun object with the given element type.
*
* Assumes that 'activity' namespace has been previously defined.
*
* @fixme replace with wrappers on asActivityObject when it's got everything.
*
* @param string $element one of 'actor', 'subject', 'object', 'target'
* @return string
*/
function asActivityNoun($element)
{
if ($this->isGroup()) {
$noun = ActivityObject::fromGroup($this->localGroup());
return $noun->asString('activity:' . $element);
} else {
$noun = ActivityObject::fromProfile($this->localProfile());
return $noun->asString('activity:' . $element);
}
}
/**
* @return boolean true if this is a remote group
*/
function isGroup()
{
if ($this->profile_id && !$this->group_id) {
return false;
} else if ($this->group_id && !$this->profile_id) {
return true;
} else if ($this->group_id && $this->profile_id) {
throw new ServerException("Invalid ostatus_profile state: both group and profile IDs set for $this->uri");
} else {
throw new ServerException("Invalid ostatus_profile state: both group and profile IDs empty for $this->uri");
}
}
/**
* Send a subscription request to the hub for this feed.
* The hub will later send us a confirmation POST to /main/push/callback.
*
* @return bool true on success, false on failure
* @throws ServerException if feed state is not valid
*/
public function subscribe()
{
$feedsub = FeedSub::ensureFeed($this->feeduri);
if ($feedsub->sub_state == 'active') {
// Active subscription, we don't need to do anything.
return true;
} else {
// Inactive or we got left in an inconsistent state.
// Run a subscription request to make sure we're current!
return $feedsub->subscribe();
}
}
/**
* Send a PuSH unsubscription request to the hub for this feed.
* The hub will later send us a confirmation POST to /main/push/callback.
*
* @return bool true on success, false on failure
* @throws ServerException if feed state is not valid
*/
public function unsubscribe() {
$feedsub = FeedSub::staticGet('uri', $this->feeduri);
if (!$feedsub || $feedsub->sub_state == '' || $feedsub->sub_state == 'inactive') {
// No active PuSH subscription, we can just leave it be.
return true;
} else {
// PuSH subscription is either active or in an indeterminate state.
// Send an unsubscribe.
return $feedsub->unsubscribe();
}
}
/**
* Check if this remote profile has any active local subscriptions, and
* if not drop the PuSH subscription feed.
*
* @return boolean
*/
public function garbageCollect()
{
if ($this->isGroup()) {
$members = $this->localGroup()->getMembers(0, 1);
$count = $members->N;
} else {
$count = $this->localProfile()->subscriberCount();
}
if ($count == 0) {
common_log(LOG_INFO, "Unsubscribing from now-unused remote feed $this->feeduri");
$this->unsubscribe();
return true;
} else {
return false;
}
}
/**
* Send an Activity Streams notification to the remote Salmon endpoint,
* if so configured.
*
* @param Profile $actor Actor who did the activity
* @param string $verb Activity::SUBSCRIBE or Activity::JOIN
* @param Object $object object of the action; must define asActivityNoun($tag)
*/
public function notify($actor, $verb, $object=null)
{
if (!($actor instanceof Profile)) {
$type = gettype($actor);
if ($type == 'object') {
$type = get_class($actor);
}
throw new ServerException("Invalid actor passed to " . __METHOD__ . ": " . $type);
}
if ($object == null) {
$object = $this;
}
if ($this->salmonuri) {
$text = 'update';
$id = TagURI::mint('%s:%s:%s',
$verb,
$actor->getURI(),
common_date_iso8601(time()));
// @fixme consolidate all these NS settings somewhere
$attributes = array('xmlns' => Activity::ATOM,
'xmlns:activity' => 'http://activitystrea.ms/spec/1.0/',
'xmlns:thr' => 'http://purl.org/syndication/thread/1.0',
'xmlns:georss' => 'http://www.georss.org/georss',
'xmlns:ostatus' => 'http://ostatus.org/schema/1.0',
'xmlns:poco' => 'http://portablecontacts.net/spec/1.0',
'xmlns:media' => 'http://purl.org/syndication/atommedia');
$entry = new XMLStringer();
$entry->elementStart('entry', $attributes);
$entry->element('id', null, $id);
$entry->element('title', null, $text);
$entry->element('summary', null, $text);
$entry->element('published', null, common_date_w3dtf(common_sql_now()));
$entry->element('activity:verb', null, $verb);
$entry->raw($actor->asAtomAuthor());
$entry->raw($actor->asActivityActor());
$entry->raw($object->asActivityNoun('object'));
$entry->elementEnd('entry');
$xml = $entry->getString();
common_log(LOG_INFO, "Posting to Salmon endpoint $this->salmonuri: $xml");
$salmon = new Salmon(); // ?
return $salmon->post($this->salmonuri, $xml, $actor);
}
return false;
}
/**
* Send a Salmon notification ping immediately, and confirm that we got
* an acceptable response from the remote site.
*
* @param mixed $entry XML string, Notice, or Activity
* @return boolean success
*/
public function notifyActivity($entry, $actor)
{
if ($this->salmonuri) {
$salmon = new Salmon();
return $salmon->post($this->salmonuri, $this->notifyPrepXml($entry), $actor);
}
return false;
}
/**
* Queue a Salmon notification for later. If queues are disabled we'll
* send immediately but won't get the return value.
*
* @param mixed $entry XML string, Notice, or Activity
* @return boolean success
*/
public function notifyDeferred($entry, $actor)
{
if ($this->salmonuri) {
$data = array('salmonuri' => $this->salmonuri,
'entry' => $this->notifyPrepXml($entry),
'actor' => $actor->id);
$qm = QueueManager::get();
return $qm->enqueue($data, 'salmon');
}
return false;
}
protected function notifyPrepXml($entry)
{
$preamble = '<?xml version="1.0" encoding="UTF-8" ?' . '>';
if (is_string($entry)) {
return $entry;
} else if ($entry instanceof Activity) {
return $preamble . $entry->asString(true);
} else if ($entry instanceof Notice) {
return $preamble . $entry->asAtomEntry(true, true);
} else {
throw new ServerException("Invalid type passed to Ostatus_profile::notify; must be XML string or Activity entry");
}
}
function getBestName()
{
if ($this->isGroup()) {
return $this->localGroup()->getBestName();
} else {
return $this->localProfile()->getBestName();
}
}
/**
* Read and post notices for updates from the feed.
* Currently assumes that all items in the feed are new,
* coming from a PuSH hub.
*
* @param DOMDocument $doc
* @param string $source identifier ("push")
*/
public function processFeed(DOMDocument $doc, $source)
{
$feed = $doc->documentElement;
if ($feed->localName == 'feed' && $feed->namespaceURI == Activity::ATOM) {
$this->processAtomFeed($feed, $source);
} else if ($feed->localName == 'rss') { // @fixme check namespace
$this->processRssFeed($feed, $source);
} else {
throw new Exception("Unknown feed format.");
}
}
public function processAtomFeed(DOMElement $feed, $source)
{
$entries = $feed->getElementsByTagNameNS(Activity::ATOM, 'entry');
if ($entries->length == 0) {
common_log(LOG_ERR, __METHOD__ . ": no entries in feed update, ignoring");
return;
}
for ($i = 0; $i < $entries->length; $i++) {
$entry = $entries->item($i);
$this->processEntry($entry, $feed, $source);
}
}
public function processRssFeed(DOMElement $rss, $source)
{
$channels = $rss->getElementsByTagName('channel');
if ($channels->length == 0) {
throw new Exception("RSS feed without a channel.");
} else if ($channels->length > 1) {
common_log(LOG_WARNING, __METHOD__ . ": more than one channel in an RSS feed");
}
$channel = $channels->item(0);
$items = $channel->getElementsByTagName('item');
for ($i = 0; $i < $items->length; $i++) {
$item = $items->item($i);
$this->processEntry($item, $channel, $source);
}
}
/**
* Process a posted entry from this feed source.
*
* @param DOMElement $entry
* @param DOMElement $feed for context
* @param string $source identifier ("push" or "salmon")
*/
public function processEntry($entry, $feed, $source)
{
$activity = new Activity($entry, $feed);
if ($activity->verb == ActivityVerb::POST) {
$this->processPost($activity, $source);
} else {
common_log(LOG_INFO, "Ignoring activity with unrecognized verb $activity->verb");
}
}
/**
* Process an incoming post activity from this remote feed.
* @param Activity $activity
* @param string $method 'push' or 'salmon'
* @return mixed saved Notice or false
* @fixme break up this function, it's getting nasty long
*/
public function processPost($activity, $method)
{
if ($this->isGroup()) {
// A group feed will contain posts from multiple authors.
// @fixme validate these profiles in some way!
$oprofile = self::ensureActorProfile($activity);
if ($oprofile->isGroup()) {
// Groups can't post notices in StatusNet.
common_log(LOG_WARNING, "OStatus: skipping post with group listed as author: $oprofile->uri in feed from $this->uri");
return false;
}
} else {
$actor = $activity->actor;
if (empty($actor)) {
// OK here! assume the default
} else if ($actor->id == $this->uri || $actor->link == $this->uri) {
$this->updateFromActivityObject($actor);
} else {
throw new Exception("Got an actor '{$actor->title}' ({$actor->id}) on single-user feed for {$this->uri}");
}
$oprofile = $this;
}
// The id URI will be used as a unique identifier for for the notice,
// protecting against duplicate saves. It isn't required to be a URL;
// tag: URIs for instance are found in Google Buzz feeds.
$sourceUri = $activity->object->id;
$dupe = Notice::staticGet('uri', $sourceUri);
if ($dupe) {
common_log(LOG_INFO, "OStatus: ignoring duplicate post: $sourceUri");
return false;
}
// We'll also want to save a web link to the original notice, if provided.
$sourceUrl = null;
if ($activity->object->link) {
$sourceUrl = $activity->object->link;
} else if ($activity->link) {
$sourceUrl = $activity->link;
} else if (preg_match('!^https?://!', $activity->object->id)) {
$sourceUrl = $activity->object->id;
}
// Get (safe!) HTML and text versions of the content
$rendered = $this->purify($activity->object->content);
$content = html_entity_decode(strip_tags($rendered));
$shortened = common_shorten_links($content);
// If it's too long, try using the summary, and make the
// HTML an attachment.
$attachment = null;
if (Notice::contentTooLong($shortened)) {
$attachment = $this->saveHTMLFile($activity->object->title, $rendered);
$summary = $activity->object->summary;
if (empty($summary)) {
$summary = $content;
}
$shortSummary = common_shorten_links($summary);
if (Notice::contentTooLong($shortSummary)) {
$url = common_shorten_url(common_local_url('attachment',
array('attachment' => $attachment->id)));
$shortSummary = substr($shortSummary,
0,
Notice::maxContent() - (mb_strlen($url) + 2));
$shortSummary .= '… ' . $url;
$content = $shortSummary;
$rendered = common_render_text($content);
}
}
$options = array('is_local' => Notice::REMOTE_OMB,
'url' => $sourceUrl,
'uri' => $sourceUri,
'rendered' => $rendered,
'replies' => array(),
'groups' => array(),
'tags' => array(),
'urls' => array());
// Check for optional attributes...
if (!empty($activity->time)) {
$options['created'] = common_sql_date($activity->time);
}
if ($activity->context) {
// Any individual or group attn: targets?
$replies = $activity->context->attention;
$options['groups'] = $this->filterReplies($oprofile, $replies);
$options['replies'] = $replies;
// Maintain direct reply associations
// @fixme what about conversation ID?
if (!empty($activity->context->replyToID)) {
$orig = Notice::staticGet('uri',
$activity->context->replyToID);
if (!empty($orig)) {
$options['reply_to'] = $orig->id;
}
}
$location = $activity->context->location;
if ($location) {
$options['lat'] = $location->lat;
$options['lon'] = $location->lon;
if ($location->location_id) {
$options['location_ns'] = $location->location_ns;
$options['location_id'] = $location->location_id;
}
}
}
// Atom categories <-> hashtags
foreach ($activity->categories as $cat) {
if ($cat->term) {
$term = common_canonical_tag($cat->term);
if ($term) {
$options['tags'][] = $term;
}
}
}
// Atom enclosures -> attachment URLs
foreach ($activity->enclosures as $href) {
// @fixme save these locally or....?
$options['urls'][] = $href;
}
try {
$saved = Notice::saveNew($oprofile->profile_id,
$content,
'ostatus',
$options);
if ($saved) {
Ostatus_source::saveNew($saved, $this, $method);
if (!empty($attachment)) {
File_to_post::processNew($attachment->id, $saved->id);
}
}
} catch (Exception $e) {
common_log(LOG_ERR, "OStatus save of remote message $sourceUri failed: " . $e->getMessage());
throw $e;
}
common_log(LOG_INFO, "OStatus saved remote message $sourceUri as notice id $saved->id");
return $saved;
}
/**
* Clean up HTML
*/
protected function purify($html)
{
require_once INSTALLDIR.'/extlib/htmLawed/htmLawed.php';
$config = array('safe' => 1,
'deny_attribute' => 'id,style,on*');
return htmLawed($html, $config);
}
/**
* Filters a list of recipient ID URIs to just those for local delivery.
* @param Ostatus_profile local profile of sender
* @param array in/out &$attention_uris set of URIs, will be pruned on output
* @return array of group IDs
*/
protected function filterReplies($sender, &$attention_uris)
{
common_log(LOG_DEBUG, "Original reply recipients: " . implode(', ', $attention_uris));
$groups = array();
$replies = array();
foreach ($attention_uris as $recipient) {
// Is the recipient a local user?
$user = User::staticGet('uri', $recipient);
if ($user) {
// @fixme sender verification, spam etc?
$replies[] = $recipient;
continue;
}
// Is the recipient a remote group?
$oprofile = Ostatus_profile::staticGet('uri', $recipient);
if ($oprofile) {
if ($oprofile->isGroup()) {
// Deliver to local members of this remote group.
// @fixme sender verification?
$groups[] = $oprofile->group_id;
} else {
common_log(LOG_DEBUG, "Skipping reply to remote profile $recipient");
}
continue;
}
// Is the recipient a local group?
// @fixme uri on user_group isn't reliable yet
// $group = User_group::staticGet('uri', $recipient);
$id = OStatusPlugin::localGroupFromUrl($recipient);
if ($id) {
$group = User_group::staticGet('id', $id);
if ($group) {
// Deliver to all members of this local group if allowed.
$profile = $sender->localProfile();
if ($profile->isMember($group)) {
$groups[] = $group->id;
} else {
common_log(LOG_DEBUG, "Skipping reply to local group $group->nickname as sender $profile->id is not a member");
}
continue;
} else {
common_log(LOG_DEBUG, "Skipping reply to bogus group $recipient");
}
}
common_log(LOG_DEBUG, "Skipping reply to unrecognized profile $recipient");
}
$attention_uris = $replies;
common_log(LOG_DEBUG, "Local reply recipients: " . implode(', ', $replies));
common_log(LOG_DEBUG, "Local group recipients: " . implode(', ', $groups));
return $groups;
}
/**
* @param string $profile_url
* @return Ostatus_profile
* @throws FeedSubException
*/
public static function ensureProfileURL($profile_url, $hints=array())
{
$oprofile = self::getFromProfileURL($profile_url);
if (!empty($oprofile)) {
return $oprofile;
}
$hints['profileurl'] = $profile_url;
// Fetch the URL
// XXX: HTTP caching
$client = new HTTPClient();
$client->setHeader('Accept', 'text/html,application/xhtml+xml');
$response = $client->get($profile_url);
if (!$response->isOk()) {
return null;
}
// Check if we have a non-canonical URL
$finalUrl = $response->getUrl();
if ($finalUrl != $profile_url) {
$hints['profileurl'] = $finalUrl;
$oprofile = self::getFromProfileURL($finalUrl);
if (!empty($oprofile)) {
return $oprofile;
}
}
// Try to get some hCard data
$body = $response->getBody();
$hcardHints = DiscoveryHints::hcardHints($body, $finalUrl);
if (!empty($hcardHints)) {
$hints = array_merge($hints, $hcardHints);
}
// Check if they've got an LRDD header
$lrdd = LinkHeader::getLink($response, 'lrdd', 'application/xrd+xml');
if (!empty($lrdd)) {
$xrd = Discovery::fetchXrd($lrdd);
$xrdHints = DiscoveryHints::fromXRD($xrd);
$hints = array_merge($hints, $xrdHints);
}
// If discovery found a feedurl (probably from LRDD), use it.
if (array_key_exists('feedurl', $hints)) {
return self::ensureFeedURL($hints['feedurl'], $hints);
}
// Get the feed URL from HTML
$discover = new FeedDiscovery();
$feedurl = $discover->discoverFromHTML($finalUrl, $body);
if (!empty($feedurl)) {
$hints['feedurl'] = $feedurl;
return self::ensureFeedURL($feedurl, $hints);
}
}
static function getFromProfileURL($profile_url)
{
$profile = Profile::staticGet('profileurl', $profile_url);
if (empty($profile)) {
return null;
}
// Is it a known Ostatus profile?
$oprofile = Ostatus_profile::staticGet('profile_id', $profile->id);
if (!empty($oprofile)) {
return $oprofile;
}
// Is it a local user?
$user = User::staticGet('id', $profile->id);
if (!empty($user)) {
throw new Exception("'$profile_url' is the profile for local user '{$user->nickname}'.");
}
// Continue discovery; it's a remote profile
// for OMB or some other protocol, may also
// support OStatus
return null;
}
public static function ensureFeedURL($feed_url, $hints=array())
{
$discover = new FeedDiscovery();
$feeduri = $discover->discoverFromFeedURL($feed_url);
$hints['feedurl'] = $feeduri;
$huburi = $discover->getAtomLink('hub');
$hints['hub'] = $huburi;
$salmonuri = $discover->getAtomLink(Salmon::NS_REPLIES);
$hints['salmon'] = $salmonuri;
if (!$huburi) {
// We can only deal with folks with a PuSH hub
throw new FeedSubNoHubException();
}
$feedEl = $discover->root;
if ($feedEl->tagName == 'feed') {
return self::ensureAtomFeed($feedEl, $hints);
} else if ($feedEl->tagName == 'channel') {
return self::ensureRssChannel($feedEl, $hints);
} else {
throw new FeedSubBadXmlException($feeduri);
}
}
public static function ensureAtomFeed($feedEl, $hints)
{
// Try to get a profile from the feed activity:subject
$subject = ActivityUtils::child($feedEl, Activity::SUBJECT, Activity::SPEC);
if (!empty($subject)) {
$subjObject = new ActivityObject($subject);
return self::ensureActivityObjectProfile($subjObject, $hints);
}
// Otherwise, try the feed author
$author = ActivityUtils::child($feedEl, Activity::AUTHOR, Activity::ATOM);
if (!empty($author)) {
$authorObject = new ActivityObject($author);
return self::ensureActivityObjectProfile($authorObject, $hints);
}
// Sheesh. Not a very nice feed! Let's try fingerpoken in the
// entries.
$entries = $discover->feed->getElementsByTagNameNS(Activity::ATOM, 'entry');
if (!empty($entries) && $entries->length > 0) {
$entry = $entries->item(0);
$actor = ActivityUtils::child($entry, Activity::ACTOR, Activity::SPEC);
if (!empty($actor)) {
$actorObject = new ActivityObject($actor);
return self::ensureActivityObjectProfile($actorObject, $hints);
}
$author = ActivityUtils::child($entry, Activity::AUTHOR, Activity::ATOM);
if (!empty($author)) {
$authorObject = new ActivityObject($author);
return self::ensureActivityObjectProfile($authorObject, $hints);
}
}
// XXX: make some educated guesses here
throw new FeedSubException("Can't find enough profile information to make a feed.");
}
public static function ensureRssChannel($feedEl, $hints)
{
// @fixme we should check whether this feed has elements
// with different <author> or <dc:creator> elements, and... I dunno.
// Do something about that.
$obj = ActivityObject::fromRssChannel($feedEl);
return self::ensureActivityObjectProfile($obj, $hints);
}
/**
* Download and update given avatar image
*
* @param string $url
* @throws Exception in various failure cases
*/
protected function updateAvatar($url)
{
if ($url == $this->avatar) {
// We've already got this one.
return;
}
if (!common_valid_http_url($url)) {
throw new ServerException(_m("Invalid avatar URL %s"), $url);
}
if ($this->isGroup()) {
$self = $this->localGroup();
} else {
$self = $this->localProfile();
}
if (!$self) {
throw new ServerException(sprintf(
_m("Tried to update avatar for unsaved remote profile %s"),
$this->uri));
}
// @fixme this should be better encapsulated
// ripped from oauthstore.php (for old OMB client)
$temp_filename = tempnam(sys_get_temp_dir(), 'listener_avatar');
if (!copy($url, $temp_filename)) {
throw new ServerException(sprintf(_m("Unable to fetch avatar from %s"), $url));
}
if ($this->isGroup()) {
$id = $this->group_id;
} else {
$id = $this->profile_id;
}
// @fixme should we be using different ids?
$imagefile = new ImageFile($id, $temp_filename);
$filename = Avatar::filename($id,
image_type_to_extension($imagefile->type),
null,
common_timestamp());
rename($temp_filename, Avatar::path($filename));
$self->setOriginal($filename);
$orig = clone($this);
$this->avatar = $url;
$this->update($orig);
}
/**
* Pull avatar URL from ActivityObject or profile hints
*
* @param ActivityObject $object
* @param array $hints
* @return mixed URL string or false
*/
protected static function getActivityObjectAvatar($object, $hints=array())
{
if ($object->avatarLinks) {
$best = false;
// Take the exact-size avatar, or the largest avatar, or the first avatar if all sizeless
foreach ($object->avatarLinks as $avatar) {
if ($avatar->width == AVATAR_PROFILE_SIZE && $avatar->height = AVATAR_PROFILE_SIZE) {
// Exact match!
$best = $avatar;
break;
}
if (!$best || $avatar->width > $best->width) {
$best = $avatar;
}
}
return $best->url;
} else if (array_key_exists('avatar', $hints)) {
return $hints['avatar'];
}
return false;
}
/**
* Get an appropriate avatar image source URL, if available.
*
* @param ActivityObject $actor
* @param DOMElement $feed
* @return string
*/
protected static function getAvatar($actor, $feed)
{
$url = '';
$icon = '';
if ($actor->avatar) {
$url = trim($actor->avatar);
}
if (!$url) {
// Check <atom:logo> and <atom:icon> on the feed
$els = $feed->childNodes();
if ($els && $els->length) {
for ($i = 0; $i < $els->length; $i++) {
$el = $els->item($i);
if ($el->namespaceURI == Activity::ATOM) {
if (empty($url) && $el->localName == 'logo') {
$url = trim($el->textContent);
break;
}
if (empty($icon) && $el->localName == 'icon') {
// Use as a fallback
$icon = trim($el->textContent);
}
}
}
}
if ($icon && !$url) {
$url = $icon;
}
}
if ($url) {
$opts = array('allowed_schemes' => array('http', 'https'));
if (Validate::uri($url, $opts)) {
return $url;
}
}
return common_path('plugins/OStatus/images/96px-Feed-icon.svg.png');
}
/**
* Fetch, or build if necessary, an Ostatus_profile for the actor
* in a given Activity Streams activity.
*
* @param Activity $activity
* @param string $feeduri if we already know the canonical feed URI!
* @param string $salmonuri if we already know the salmon return channel URI
* @return Ostatus_profile
*/
public static function ensureActorProfile($activity, $hints=array())
{
return self::ensureActivityObjectProfile($activity->actor, $hints);
}
public static function ensureActivityObjectProfile($object, $hints=array())
{
$profile = self::getActivityObjectProfile($object);
if ($profile) {
$profile->updateFromActivityObject($object, $hints);
} else {
$profile = self::createActivityObjectProfile($object, $hints);
}
return $profile;
}
/**
* @param Activity $activity
* @return mixed matching Ostatus_profile or false if none known
*/
public static function getActorProfile($activity)
{
return self::getActivityObjectProfile($activity->actor);
}
protected static function getActivityObjectProfile($object)
{
$uri = self::getActivityObjectProfileURI($object);
return Ostatus_profile::staticGet('uri', $uri);
}
protected static function getActorProfileURI($activity)
{
return self::getActivityObjectProfileURI($activity->actor);
}
/**
* @param Activity $activity
* @return string
* @throws ServerException
*/
protected static function getActivityObjectProfileURI($object)
{
$opts = array('allowed_schemes' => array('http', 'https'));
if ($object->id && Validate::uri($object->id, $opts)) {
return $object->id;
}
if ($object->link && Validate::uri($object->link, $opts)) {
return $object->link;
}
throw new ServerException("No author ID URI found");
}
/**
* @fixme validate stuff somewhere
*/
/**
* Create local ostatus_profile and profile/user_group entries for
* the provided remote user or group.
*
* @param ActivityObject $object
* @param array $hints
*
* @return Ostatus_profile
*/
protected static function createActivityObjectProfile($object, $hints=array())
{
$homeuri = $object->id;
$discover = false;
if (!$homeuri) {
common_log(LOG_DEBUG, __METHOD__ . " empty actor profile URI: " . var_export($activity, true));
throw new Exception("No profile URI");
}
if (OStatusPlugin::localProfileFromUrl($homeuri)) {
throw new Exception("Local user can't be referenced as remote.");
}
if (OStatusPlugin::localGroupFromUrl($homeuri)) {
throw new Exception("Local group can't be referenced as remote.");
}
if (array_key_exists('feedurl', $hints)) {
$feeduri = $hints['feedurl'];
} else {
$discover = new FeedDiscovery();
$feeduri = $discover->discoverFromURL($homeuri);
}
if (array_key_exists('salmon', $hints)) {
$salmonuri = $hints['salmon'];
} else {
if (!$discover) {
$discover = new FeedDiscovery();
$discover->discoverFromFeedURL($hints['feedurl']);
}
$salmonuri = $discover->getAtomLink(Salmon::NS_REPLIES);
}
if (array_key_exists('hub', $hints)) {
$huburi = $hints['hub'];
} else {
if (!$discover) {
$discover = new FeedDiscovery();
$discover->discoverFromFeedURL($hints['feedurl']);
}
$huburi = $discover->getAtomLink('hub');
}
if (!$huburi) {
// We can only deal with folks with a PuSH hub
throw new FeedSubNoHubException();
}
$oprofile = new Ostatus_profile();
$oprofile->uri = $homeuri;
$oprofile->feeduri = $feeduri;
$oprofile->salmonuri = $salmonuri;
$oprofile->created = common_sql_now();
$oprofile->modified = common_sql_now();
if ($object->type == ActivityObject::PERSON) {
$profile = new Profile();
$profile->created = common_sql_now();
self::updateProfile($profile, $object, $hints);
$oprofile->profile_id = $profile->insert();
if (!$oprofile->profile_id) {
throw new ServerException("Can't save local profile");
}
} else {
$group = new User_group();
$group->uri = $homeuri;
$group->created = common_sql_now();
self::updateGroup($group, $object, $hints);
$oprofile->group_id = $group->insert();
if (!$oprofile->group_id) {
throw new ServerException("Can't save local profile");
}
}
$ok = $oprofile->insert();
if ($ok) {
$avatar = self::getActivityObjectAvatar($object, $hints);
if ($avatar) {
$oprofile->updateAvatar($avatar);
}
return $oprofile;
} else {
throw new ServerException("Can't save OStatus profile");
}
}
/**
* Save any updated profile information to our local copy.
* @param ActivityObject $object
* @param array $hints
*/
public function updateFromActivityObject($object, $hints=array())
{
if ($this->isGroup()) {
$group = $this->localGroup();
self::updateGroup($group, $object, $hints);
} else {
$profile = $this->localProfile();
self::updateProfile($profile, $object, $hints);
}
$avatar = self::getActivityObjectAvatar($object, $hints);
if ($avatar) {
$this->updateAvatar($avatar);
}
}
protected static function updateProfile($profile, $object, $hints=array())
{
$orig = clone($profile);
$profile->nickname = self::getActivityObjectNickname($object, $hints);
if (!empty($object->title)) {
$profile->fullname = $object->title;
} else if (array_key_exists('fullname', $hints)) {
$profile->fullname = $hints['fullname'];
}
if (!empty($object->link)) {
$profile->profileurl = $object->link;
} else if (array_key_exists('profileurl', $hints)) {
$profile->profileurl = $hints['profileurl'];
} else if (Validate::uri($object->id, array('allowed_schemes' => array('http', 'https')))) {
$profile->profileurl = $object->id;
}
$profile->bio = self::getActivityObjectBio($object, $hints);
$profile->location = self::getActivityObjectLocation($object, $hints);
$profile->homepage = self::getActivityObjectHomepage($object, $hints);
if (!empty($object->geopoint)) {
$location = ActivityContext::locationFromPoint($object->geopoint);
if (!empty($location)) {
$profile->lat = $location->lat;
$profile->lon = $location->lon;
}
}
// @fixme tags/categories
// @todo tags from categories
if ($profile->id) {
common_log(LOG_DEBUG, "Updating OStatus profile $profile->id from remote info $object->id: " . var_export($object, true) . var_export($hints, true));
$profile->update($orig);
}
}
protected static function updateGroup($group, $object, $hints=array())
{
$orig = clone($group);
$group->nickname = self::getActivityObjectNickname($object, $hints);
$group->fullname = $object->title;
if (!empty($object->link)) {
$group->mainpage = $object->link;
} else if (array_key_exists('profileurl', $hints)) {
$group->mainpage = $hints['profileurl'];
}
// @todo tags from categories
$group->description = self::getActivityObjectBio($object, $hints);
$group->location = self::getActivityObjectLocation($object, $hints);
$group->homepage = self::getActivityObjectHomepage($object, $hints);
if ($group->id) {
common_log(LOG_DEBUG, "Updating OStatus group $group->id from remote info $object->id: " . var_export($object, true) . var_export($hints, true));
$group->update($orig);
}
}
protected static function getActivityObjectHomepage($object, $hints=array())
{
$homepage = null;
$poco = $object->poco;
if (!empty($poco)) {
$url = $poco->getPrimaryURL();
if ($url && $url->type == 'homepage') {
$homepage = $url->value;
}
}
// @todo Try for a another PoCo URL?
return $homepage;
}
protected static function getActivityObjectLocation($object, $hints=array())
{
$location = null;
if (!empty($object->poco) &&
isset($object->poco->address->formatted)) {
$location = $object->poco->address->formatted;
} else if (array_key_exists('location', $hints)) {
$location = $hints['location'];
}
if (!empty($location)) {
if (mb_strlen($location) > 255) {
$location = mb_substr($note, 0, 255 - 3) . ' … ';
}
}
// @todo Try to find location some othe way? Via goerss point?
return $location;
}
protected static function getActivityObjectBio($object, $hints=array())
{
$bio = null;
if (!empty($object->poco)) {
$note = $object->poco->note;
} else if (array_key_exists('bio', $hints)) {
$note = $hints['bio'];
}
if (!empty($note)) {
if (Profile::bioTooLong($note)) {
// XXX: truncate ok?
$bio = mb_substr($note, 0, Profile::maxBio() - 3) . ' … ';
} else {
$bio = $note;
}
}
// @todo Try to get bio info some other way?
return $bio;
}
protected static function getActivityObjectNickname($object, $hints=array())
{
if ($object->poco) {
if (!empty($object->poco->preferredUsername)) {
return common_nicknamize($object->poco->preferredUsername);
}
}
if (!empty($object->nickname)) {
return common_nicknamize($object->nickname);
}
if (array_key_exists('nickname', $hints)) {
return $hints['nickname'];
}
// Try the profile url (like foo.example.com or example.com/user/foo)
$profileUrl = ($object->link) ? $object->link : $hints['profileurl'];
if (!empty($profileUrl)) {
$nickname = self::nicknameFromURI($profileUrl);
}
// Try the URI (may be a tag:, http:, acct:, ...
if (empty($nickname)) {
$nickname = self::nicknameFromURI($object->id);
}
// Try a Webfinger if one was passed (way) down
if (empty($nickname)) {
if (array_key_exists('webfinger', $hints)) {
$nickname = self::nicknameFromURI($hints['webfinger']);
}
}
// Try the name
if (empty($nickname)) {
$nickname = common_nicknamize($object->title);
}
return $nickname;
}
protected static function nicknameFromURI($uri)
{
preg_match('/(\w+):/', $uri, $matches);
$protocol = $matches[1];
switch ($protocol) {
case 'acct':
case 'mailto':
if (preg_match("/^$protocol:(.*)?@.*\$/", $uri, $matches)) {
return common_canonical_nickname($matches[1]);
}
return null;
case 'http':
return common_url_to_nickname($uri);
break;
default:
return null;
}
}
/**
* @param string $addr webfinger address
* @return Ostatus_profile
* @throws Exception on error conditions
*/
public static function ensureWebfinger($addr)
{
// First, try the cache
$uri = self::cacheGet(sprintf('ostatus_profile:webfinger:%s', $addr));
if ($uri !== false) {
if (is_null($uri)) {
// Negative cache entry
throw new Exception('Not a valid webfinger address.');
}
$oprofile = Ostatus_profile::staticGet('uri', $uri);
if (!empty($oprofile)) {
return $oprofile;
}
}
// Try looking it up
$oprofile = Ostatus_profile::staticGet('uri', 'acct:'.$addr);
if (!empty($oprofile)) {
self::cacheSet(sprintf('ostatus_profile:webfinger:%s', $addr), $oprofile->uri);
return $oprofile;
}
// Now, try some discovery
$disco = new Discovery();
try {
$xrd = $disco->lookup($addr);
} catch (Exception $e) {
// Save negative cache entry so we don't waste time looking it up again.
// @fixme distinguish temporary failures?
self::cacheSet(sprintf('ostatus_profile:webfinger:%s', $addr), null);
throw new Exception('Not a valid webfinger address.');
}
$hints = array('webfinger' => $addr);
$dhints = DiscoveryHints::fromXRD($xrd);
$hints = array_merge($hints, $dhints);
// If there's an Hcard, let's grab its info
if (array_key_exists('hcard', $hints)) {
if (!array_key_exists('profileurl', $hints) ||
$hints['hcard'] != $hints['profileurl']) {
$hcardHints = DiscoveryHints::fromHcardUrl($hints['hcard']);
$hints = array_merge($hcardHints, $hints);
}
}
// If we got a feed URL, try that
if (array_key_exists('feedurl', $hints)) {
try {
common_log(LOG_INFO, "Discovery on acct:$addr with feed URL " . $hints['feedurl']);
$oprofile = self::ensureFeedURL($hints['feedurl'], $hints);
self::cacheSet(sprintf('ostatus_profile:webfinger:%s', $addr), $oprofile->uri);
return $oprofile;
} catch (Exception $e) {
common_log(LOG_WARNING, "Failed creating profile from feed URL '$feedUrl': " . $e->getMessage());
// keep looking
}
}
// If we got a profile page, try that!
if (array_key_exists('profileurl', $hints)) {
try {
common_log(LOG_INFO, "Discovery on acct:$addr with profile URL $profileUrl");
$oprofile = self::ensureProfileURL($hints['profileurl'], $hints);
self::cacheSet(sprintf('ostatus_profile:webfinger:%s', $addr), $oprofile->uri);
return $oprofile;
} catch (Exception $e) {
common_log(LOG_WARNING, "Failed creating profile from profile URL '$profileUrl': " . $e->getMessage());
// keep looking
}
}
// XXX: try hcard
// XXX: try FOAF
if (array_key_exists('salmon', $hints)) {
$salmonEndpoint = $hints['salmon'];
// An account URL, a salmon endpoint, and a dream? Not much to go
// on, but let's give it a try
$uri = 'acct:'.$addr;
$profile = new Profile();
$profile->nickname = self::nicknameFromUri($uri);
$profile->created = common_sql_now();
if (isset($profileUrl)) {
$profile->profileurl = $profileUrl;
}
$profile_id = $profile->insert();
if (!$profile_id) {
common_log_db_error($profile, 'INSERT', __FILE__);
throw new Exception("Couldn't save profile for '$addr'");
}
$oprofile = new Ostatus_profile();
$oprofile->uri = $uri;
$oprofile->salmonuri = $salmonEndpoint;
$oprofile->profile_id = $profile_id;
$oprofile->created = common_sql_now();
if (isset($feedUrl)) {
$profile->feeduri = $feedUrl;
}
$result = $oprofile->insert();
if (!$result) {
common_log_db_error($oprofile, 'INSERT', __FILE__);
throw new Exception("Couldn't save ostatus_profile for '$addr'");
}
self::cacheSet(sprintf('ostatus_profile:webfinger:%s', $addr), $oprofile->uri);
return $oprofile;
}
throw new Exception("Couldn't find a valid profile for '$addr'");
}
function saveHTMLFile($title, $rendered)
{
$final = sprintf("<!DOCTYPE html>\n<html><head><title>%s</title></head>".
'<body><div>%s</div></body></html>',
htmlspecialchars($title),
$rendered);
$filename = File::filename($this->localProfile(),
'ostatus', // ignored?
'text/html');
$filepath = File::path($filename);
file_put_contents($filepath, $final);
$file = new File;
$file->filename = $filename;
$file->url = File::url($filename);
$file->size = filesize($filepath);
$file->date = time();
$file->mimetype = 'text/html';
$file_id = $file->insert();
if ($file_id === false) {
common_log_db_error($file, "INSERT", __FILE__);
throw new ServerException(_('Could not store HTML content of long post as file.'));
}
return $file;
}
}