gnu-social/plugins/OStatus/classes/Ostatus_profile.php

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<?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 $created;
public $modified;
public /*static*/ function staticGet($k, $v=null)
{
return parent::staticGet(__CLASS__, $k, $v);
}
/**
* return table definition for DB_DataObject
*
* DB_DataObject needs to know something about the table to manipulate
* instances. This method provides all the DB_DataObject needs to know.
*
* @return array array of column definitions
*/
function table()
{
return array('uri' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
'profile_id' => DB_DATAOBJECT_INT,
'group_id' => DB_DATAOBJECT_INT,
'feeduri' => DB_DATAOBJECT_STR,
'salmonuri' => DB_DATAOBJECT_STR,
'created' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL,
'modified' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL);
}
static function schemaDef()
{
return array(new ColumnDef('uri', 'varchar',
255, false, 'PRI'),
new ColumnDef('profile_id', 'integer',
null, true, 'UNI'),
new ColumnDef('group_id', 'integer',
null, true, 'UNI'),
new ColumnDef('feeduri', 'varchar',
255, true, 'UNI'),
new ColumnDef('salmonuri', 'text',
null, true),
new ColumnDef('created', 'datetime',
null, false),
new ColumnDef('modified', 'datetime',
null, false));
}
/**
* return key definitions for DB_DataObject
*
* DB_DataObject needs to know about keys that the table has; this function
* defines them.
*
* @return array key definitions
*/
function keys()
{
return array_keys($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 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.
*
* @param string $element one of 'actor', 'subject', 'object', 'target'
* @return string
*/
function asActivityNoun($element)
{
$xs = new XMLStringer(true);
$avatarHref = Avatar::defaultImage(AVATAR_PROFILE_SIZE);
$avatarType = 'image/png';
if ($this->isGroup()) {
$type = 'http://activitystrea.ms/schema/1.0/group';
$self = $this->localGroup();
// @fixme put a standard getAvatar() interface on groups too
if ($self->homepage_logo) {
$avatarHref = $self->homepage_logo;
$map = array('png' => 'image/png',
'jpg' => 'image/jpeg',
'jpeg' => 'image/jpeg',
'gif' => 'image/gif');
$extension = pathinfo(parse_url($avatarHref, PHP_URL_PATH), PATHINFO_EXTENSION);
if (isset($map[$extension])) {
$avatarType = $map[$extension];
}
}
} else {
$type = 'http://activitystrea.ms/schema/1.0/person';
$self = $this->localProfile();
$avatar = $self->getAvatar(AVATAR_PROFILE_SIZE);
if ($avatar) {
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$avatarHref = $avatar->url;
$avatarType = $avatar->mediatype;
}
}
$xs->elementStart('activity:' . $element);
$xs->element(
'activity:object-type',
null,
$type
);
$xs->element(
'id',
null,
$this->uri); // ?
$xs->element('title', null, $self->getBestName());
$xs->element(
'link', array(
'type' => $avatarType,
'href' => $avatarHref
),
''
);
$xs->elementEnd('activity:' . $element);
return $xs->getString();
}
/**
* Damn dirty hack!
*/
function isGroup()
{
return (strpos($this->feeduri, '/groups/') !== false);
}
/**
* Subscribe a local user to this remote user.
* PuSH subscription will be started if necessary, and we'll
* send a Salmon notification to the remote server if available
* notifying them of the sub.
*
* @param User $user
* @return boolean success
* @throws FeedException
*/
public function subscribeLocalToRemote(User $user)
{
if ($this->isGroup()) {
throw new ServerException("Can't subscribe to a remote group");
}
if ($this->subscribe()) {
if ($user->subscribeTo($this->localProfile())) {
$this->notify($user->getProfile(), ActivityVerb::FOLLOW, $this);
return true;
}
}
return false;
}
/**
* Mark this remote profile as subscribing to the given local user,
* and send appropriate notifications to the user.
*
* This will generally be in response to a subscription notification
* from a foreign site to our local Salmon response channel.
*
* @param User $user
* @return boolean success
*/
public function subscribeRemoteToLocal(User $user)
{
if ($this->isGroup()) {
throw new ServerException("Remote groups can't subscribe to local users");
}
// @fixme use regular channels for subbing, once they accept remote profiles
$sub = new Subscription();
$sub->subscriber = $this->profile_id;
$sub->subscribed = $user->id;
$sub->created = common_sql_now(); // current time
if ($sub->insert()) {
// @fixme use subs_notify() if refactored to take profiles?
mail_subscribe_notify_profile($user, $this->localProfile());
return true;
}
return false;
}
/**
* 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' || $feedsub->sub_state == 'subscribe') {
return true;
} else if ($feedsub->sub_state == '' || $feedsub->sub_state == 'inactive') {
return $feedsub->subscribe();
} else if ('unsubscribe') {
throw new FeedSubException("Unsub is pending, can't 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->sub_state == 'active') {
return $feedsub->unsubscribe();
} else if ($feedsub->sub_state == '' || $feedsub->sub_state == 'inactive' || $feedsub->sub_state == 'unsubscribe') {
return true;
} else if ($feedsub->sub_state == 'subscribe') {
throw new FeedSubException("Feed is awaiting subscription, can't unsub...");
}
}
/**
* 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) {
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$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');
$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());
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$entry->raw($object->asActivityNoun('object'));
$entry->elementEnd('entry');
$xml = $entry->getString();
common_log(LOG_INFO, "Posting to Salmon endpoint $this->salmonuri: $xml");
$salmon = new Salmon(); // ?
$salmon->post($this->salmonuri, $xml);
}
}
public function notifyActivity($activity)
{
if ($this->salmonuri) {
$xml = $activity->asString();
$salmon = new Salmon(); // ?
$salmon->post($this->salmonuri, $xml);
}
return;
}
function getBestName()
{
if ($this->isGroup()) {
return $this->localGroup()->getBestName();
} else {
return $this->localProfile()->getBestName();
}
}
function atomFeed($actor)
{
$feed = new Atom10Feed();
// @fixme should these be set up somewhere else?
$feed->addNamespace('activity', 'http://activitystrea.ms/spec/1.0/');
$feed->addNamespace('thr', 'http://purl.org/syndication/thread/1.0');
$feed->addNamespace('georss', 'http://www.georss.org/georss');
$feed->addNamespace('ostatus', 'http://ostatus.org/schema/1.0');
$taguribase = common_config('integration', 'taguri');
$feed->setId("tag:{$taguribase}:UserTimeline:{$actor->id}"); // ???
$feed->setTitle($actor->getBestName() . ' timeline'); // @fixme
$feed->setUpdated(time());
$feed->setPublished(time());
$feed->addLink(common_local_url('ApiTimelineUser',
array('id' => $actor->id,
'type' => 'atom')),
array('rel' => 'self',
'type' => 'application/atom+xml'));
$feed->addLink(common_local_url('userbyid',
array('id' => $actor->id)),
array('rel' => 'alternate',
'type' => 'text/html'));
return $feed;
}
/**
* 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 $feed
*/
public function processFeed($feed)
{
$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);
}
}
/**
* Process a posted entry from this feed source.
*
* @param DOMElement $entry
* @param DOMElement $feed for context
*/
protected function processEntry($entry, $feed)
{
$activity = new Activity($entry, $feed);
$debug = var_export($activity, true);
common_log(LOG_DEBUG, $debug);
if ($activity->verb == ActivityVerb::POST) {
$this->processPost($activity);
} else {
common_log(LOG_INFO, "Ignoring activity with unrecognized verb $activity->verb");
}
}
/**
* Process an incoming post activity from this remote feed.
* @param Activity $activity
*/
protected function processPost($activity)
{
if ($this->isGroup()) {
// @fixme validate these profiles in some way!
$oprofile = self::ensureActorProfile($activity);
} else {
$actorUri = self::getActorProfileURI($activity);
if ($actorUri == $this->uri) {
// @fixme check if profile info has changed and update it
} else {
// @fixme drop or reject the messages once we've got the canonical profile URI recorded sanely
common_log(LOG_INFO, "OStatus: Warning: non-group post with unexpected author: $actorUri expected $this->uri");
//return;
}
$oprofile = $this;
}
$sourceUri = $activity->object->id;
$dupe = Notice::staticGet('uri', $sourceUri);
if ($dupe) {
common_log(LOG_INFO, "OStatus: ignoring duplicate post: $sourceUri");
return;
}
$sourceUrl = null;
if ($activity->object->link) {
$sourceUrl = $activity->object->link;
} else if (preg_match('!^https?://!', $activity->object->id)) {
$sourceUrl = $activity->object->id;
}
// @fixme sanitize and save HTML content if available
$content = $activity->object->title;
$params = array('is_local' => Notice::REMOTE_OMB,
'url' => $sourceUrl,
'uri' => $sourceUri);
$location = $activity->context->location;
if ($location) {
$params['lat'] = $location->lat;
$params['lon'] = $location->lon;
if ($location->location_id) {
$params['location_ns'] = $location->location_ns;
$params['location_id'] = $location->location_id;
}
}
// @fixme save detailed ostatus source info
// @fixme ensure that groups get handled correctly
$saved = Notice::saveNew($oprofile->localProfile()->id,
$content,
'ostatus',
$params);
}
/**
* @param string $profile_url
* @return Ostatus_profile
* @throws FeedSubException
*/
public static function ensureProfile($profile_uri)
{
// Get the canonical feed URI and check it
$discover = new FeedDiscovery();
$feeduri = $discover->discoverFromURL($profile_uri);
//$feedsub = FeedSub::ensureFeed($feeduri, $discover->feed);
$huburi = $discover->getAtomLink('hub');
$salmonuri = $discover->getAtomLink('salmon');
if (!$huburi) {
// We can only deal with folks with a PuSH hub
throw new FeedSubNoHubException();
}
// Try to get a profile from the feed activity:subject
$feedEl = $discover->feed->documentElement;
$subject = ActivityUtils::child($feedEl, Activity::SUBJECT, Activity::SPEC);
if (!empty($subject)) {
$subjObject = new ActivityObject($subject);
return self::ensureActivityObjectProfile($subjObject, $feeduri, $salmonuri);
}
// Otherwise, try the feed author
$author = ActivityUtils::child($feedEl, Activity::AUTHOR, Activity::ATOM);
if (!empty($author)) {
$authorObject = new ActivityObject($author);
return self::ensureActivityObjectProfile($authorObject, $feeduri, $salmonuri);
}
// 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, $feeduri, $salmonuri);
}
$author = ActivityUtils::child($entry, Activity::AUTHOR, Activity::ATOM);
if (!empty($author)) {
$authorObject = new ActivityObject($author);
return self::ensureActivityObjectProfile($authorObject, $feeduri, $salmonuri);
}
}
// XXX: make some educated guesses here
throw new FeedSubException("Can't find enough profile information to make a feed.");
}
/**
*
* Download and update given avatar image
* @param string $url
* @throws Exception in various failure cases
*/
protected function updateAvatar($url)
{
// @fixme this should be better encapsulated
// ripped from oauthstore.php (for old OMB client)
$temp_filename = tempnam(sys_get_temp_dir(), 'listener_avatar');
copy($url, $temp_filename);
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if ($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($filename));
if ($this->isGroup()) {
$group = $this->localGroup();
$group->setOriginal($filename);
} else {
$profile = $this->localProfile();
$profile->setOriginal($filename);
}
}
protected static function getActivityObjectAvatar($object)
{
// XXX: go poke around in the feed
return $object->avatar;
}
/**
* 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, $feeduri=null, $salmonuri=null)
{
return self::ensureActivityObjectProfile($activity->actor, $feeduri, $salmonuri);
}
public static function ensureActivityObjectProfile($object, $feeduri=null, $salmonuri=null)
{
$profile = self::getActivityObjectProfile($object);
if (!$profile) {
$profile = self::createActivityObjectProfile($object, $feeduri, $salmonuri);
}
return $profile;
}
/**
* @param Activity $activity
* @return mixed matching Ostatus_profile or false if none known
*/
protected static function getActorProfile($activity)
{
return self::getActivityObjectProfile($activity->actor);
}
protected static function getActivityObjectProfile($object)
{
$uri = self::getActivityObjectProfileURI($object);
return Ostatus_profile::staticGet('homeuri', $uri);
}
protected static function getActorProfileURI($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 $object->link;
}
throw new ServerException("No author ID URI found");
}
/**
* @fixme validate stuff somewhere
*/
protected static function createActorProfile($activity, $feeduri=null, $salmonuri=null)
{
$actor = $activity->actor;
self::createActivityObjectProfile($actor, $feeduri, $salmonuri);
}
protected static function createActivityObjectProfile($object, $feeduri=null, $salmonuri=null)
{
$homeuri = self::getActivityObjectProfileURI($object);
$nickname = self::getActivityObjectNickname($object);
$avatar = self::getActivityObjectAvatar($object);
if (!$homeuri) {
common_log(LOG_DEBUG, __METHOD__ . " empty actor profile URI: " . var_export($activity, true));
throw new ServerException("No profile URI");
}
if (!$feeduri || !$salmonuri) {
// Get the canonical feed URI and check it
$discover = new FeedDiscovery();
$feeduri = $discover->discoverFromURL($homeuri);
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$huburi = $discover->getAtomLink('hub');
$salmonuri = $discover->getAtomLink('salmon');
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if (!$huburi) {
// We can only deal with folks with a PuSH hub
throw new FeedSubNoHubException();
}
}
$profile = new Profile();
$profile->nickname = $nickname;
$profile->fullname = $object->title;
$profile->profileurl = $object->link;
$profile->created = common_sql_now();
// @fixme bio
// @fixme tags/categories
// @fixme location?
// @todo tags from categories
// @todo lat/lon/location?
$ok = $profile->insert();
if (!$ok) {
throw new ServerException("Can't save local profile");
}
// @fixme either need to do feed discovery here
// or need to split out some of the feed stuff
// so we can leave it empty until later.
$oprofile = new Ostatus_profile();
$oprofile->uri = $homeuri;
$oprofile->feeduri = $feeduri;
$oprofile->salmonuri = $salmonuri;
$oprofile->profile_id = $profile->id;
$oprofile->created = common_sql_now();
$oprofile->modified = common_sql_now();
$ok = $oprofile->insert();
if ($ok) {
$oprofile->updateAvatar($avatar);
return $oprofile;
} else {
throw new ServerException("Can't save OStatus profile");
}
}
protected static function getActivityObjectNickname($object)
{
// XXX: check whatever PoCo calls a nickname first
$nickname = self::nicknameFromURI($object->id);
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;
}
}
}