849 lines
27 KiB
PHP
849 lines
27 KiB
PHP
<?php
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/*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2009-2010, StatusNet, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @package OStatusPlugin
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* @maintainer Brion Vibber <brion@status.net>
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*/
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class Ostatus_profile extends Memcached_DataObject
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{
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public $__table = 'ostatus_profile';
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public $uri;
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public $profile_id;
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public $group_id;
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public $feeduri;
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public $salmonuri;
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public $created;
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public $modified;
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public /*static*/ function staticGet($k, $v=null)
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{
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return parent::staticGet(__CLASS__, $k, $v);
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}
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/**
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* return table definition for DB_DataObject
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*
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* DB_DataObject needs to know something about the table to manipulate
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* instances. This method provides all the DB_DataObject needs to know.
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*
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* @return array array of column definitions
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*/
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function table()
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{
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return array('uri' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
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'profile_id' => DB_DATAOBJECT_INT,
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'group_id' => DB_DATAOBJECT_INT,
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'feeduri' => DB_DATAOBJECT_STR,
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'salmonuri' => DB_DATAOBJECT_STR,
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'created' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL,
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'modified' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL);
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}
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static function schemaDef()
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{
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return array(new ColumnDef('uri', 'varchar',
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255, false, 'PRI'),
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new ColumnDef('profile_id', 'integer',
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null, true, 'UNI'),
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new ColumnDef('group_id', 'integer',
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null, true, 'UNI'),
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new ColumnDef('feeduri', 'varchar',
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255, true, 'UNI'),
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new ColumnDef('salmonuri', 'text',
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null, true),
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new ColumnDef('created', 'datetime',
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null, false),
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new ColumnDef('modified', 'datetime',
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null, false));
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}
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/**
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* return key definitions for DB_DataObject
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*
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* DB_DataObject needs to know about keys that the table has; this function
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* defines them.
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*
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* @return array key definitions
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*/
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function keys()
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{
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return array_keys($this->keyTypes());
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}
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/**
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* return key definitions for Memcached_DataObject
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*
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* Our caching system uses the same key definitions, but uses a different
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* method to get them.
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*
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* @return array key definitions
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*/
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function keyTypes()
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{
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return array('uri' => 'K', 'profile_id' => 'U', 'group_id' => 'U', 'feeduri' => 'U');
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}
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function sequenceKey()
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{
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return array(false, false, false);
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}
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/**
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* Fetch the StatusNet-side profile for this feed
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* @return Profile
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*/
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public function localProfile()
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{
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if ($this->profile_id) {
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return Profile::staticGet('id', $this->profile_id);
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}
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return null;
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}
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/**
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* Fetch the StatusNet-side profile for this feed
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* @return Profile
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*/
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public function localGroup()
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{
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if ($this->group_id) {
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return User_group::staticGet('id', $this->group_id);
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}
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return null;
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}
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/**
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* Returns an XML string fragment with profile information as an
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* Activity Streams noun object with the given element type.
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*
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* Assumes that 'activity' namespace has been previously defined.
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*
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* @param string $element one of 'actor', 'subject', 'object', 'target'
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* @return string
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*/
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function asActivityNoun($element)
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{
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$xs = new XMLStringer(true);
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$avatarHref = Avatar::defaultImage(AVATAR_PROFILE_SIZE);
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$avatarType = 'image/png';
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if ($this->isGroup()) {
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$type = 'http://activitystrea.ms/schema/1.0/group';
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$self = $this->localGroup();
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// @fixme put a standard getAvatar() interface on groups too
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if ($self->homepage_logo) {
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$avatarHref = $self->homepage_logo;
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$map = array('png' => 'image/png',
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'jpg' => 'image/jpeg',
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'jpeg' => 'image/jpeg',
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'gif' => 'image/gif');
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$extension = pathinfo(parse_url($avatarHref, PHP_URL_PATH), PATHINFO_EXTENSION);
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if (isset($map[$extension])) {
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$avatarType = $map[$extension];
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}
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}
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} else {
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$type = 'http://activitystrea.ms/schema/1.0/person';
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$self = $this->localProfile();
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$avatar = $self->getAvatar(AVATAR_PROFILE_SIZE);
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if ($avatar) {
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$avatarHref = $avatar->url;
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$avatarType = $avatar->mediatype;
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}
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}
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$xs->elementStart('activity:' . $element);
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$xs->element(
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'activity:object-type',
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null,
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$type
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);
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$xs->element(
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'id',
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null,
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$this->uri); // ?
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$xs->element('title', null, $self->getBestName());
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$xs->element(
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'link', array(
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'type' => $avatarType,
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'href' => $avatarHref
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),
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''
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);
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$xs->elementEnd('activity:' . $element);
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return $xs->getString();
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}
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/**
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* Damn dirty hack!
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*/
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function isGroup()
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{
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return (strpos($this->feeduri, '/groups/') !== false);
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}
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/**
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* Subscribe a local user to this remote user.
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* PuSH subscription will be started if necessary, and we'll
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* send a Salmon notification to the remote server if available
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* notifying them of the sub.
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*
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* @param User $user
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* @return boolean success
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* @throws FeedException
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*/
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public function subscribeLocalToRemote(User $user)
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{
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if ($this->isGroup()) {
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throw new ServerException("Can't subscribe to a remote group");
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}
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if ($this->subscribe()) {
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if ($user->subscribeTo($this->localProfile())) {
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$this->notify($user->getProfile(), ActivityVerb::FOLLOW, $this);
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return true;
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}
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}
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return false;
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}
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/**
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* Mark this remote profile as subscribing to the given local user,
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* and send appropriate notifications to the user.
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*
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* This will generally be in response to a subscription notification
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* from a foreign site to our local Salmon response channel.
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*
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* @param User $user
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* @return boolean success
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*/
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public function subscribeRemoteToLocal(User $user)
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{
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if ($this->isGroup()) {
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throw new ServerException("Remote groups can't subscribe to local users");
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}
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// @fixme use regular channels for subbing, once they accept remote profiles
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$sub = new Subscription();
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$sub->subscriber = $this->profile_id;
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$sub->subscribed = $user->id;
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$sub->created = common_sql_now(); // current time
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if ($sub->insert()) {
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// @fixme use subs_notify() if refactored to take profiles?
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mail_subscribe_notify_profile($user, $this->localProfile());
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return true;
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}
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return false;
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}
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/**
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* Send a subscription request to the hub for this feed.
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* The hub will later send us a confirmation POST to /main/push/callback.
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*
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* @return bool true on success, false on failure
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* @throws ServerException if feed state is not valid
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*/
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public function subscribe()
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{
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$feedsub = FeedSub::ensureFeed($this->feeduri);
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if ($feedsub->sub_state == 'active' || $feedsub->sub_state == 'subscribe') {
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return true;
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} else if ($feedsub->sub_state == '' || $feedsub->sub_state == 'inactive') {
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return $feedsub->subscribe();
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} else if ('unsubscribe') {
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throw new FeedSubException("Unsub is pending, can't subscribe...");
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}
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}
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/**
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* Send a PuSH unsubscription request to the hub for this feed.
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* The hub will later send us a confirmation POST to /main/push/callback.
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*
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* @return bool true on success, false on failure
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* @throws ServerException if feed state is not valid
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*/
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public function unsubscribe() {
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$feedsub = FeedSub::staticGet('uri', $this->feeduri);
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if ($feedsub->sub_state == 'active') {
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return $feedsub->unsubscribe();
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} else if ($feedsub->sub_state == '' || $feedsub->sub_state == 'inactive' || $feedsub->sub_state == 'unsubscribe') {
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return true;
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} else if ($feedsub->sub_state == 'subscribe') {
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throw new FeedSubException("Feed is awaiting subscription, can't unsub...");
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}
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}
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/**
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* Send an Activity Streams notification to the remote Salmon endpoint,
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* if so configured.
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*
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* @param Profile $actor Actor who did the activity
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* @param string $verb Activity::SUBSCRIBE or Activity::JOIN
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* @param Object $object object of the action; must define asActivityNoun($tag)
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*/
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public function notify($actor, $verb, $object=null)
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{
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if (!($actor instanceof Profile)) {
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$type = gettype($actor);
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if ($type == 'object') {
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$type = get_class($actor);
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}
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throw new ServerException("Invalid actor passed to " . __METHOD__ . ": " . $type);
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}
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if ($object == null) {
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$object = $this;
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}
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if ($this->salmonuri) {
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$text = 'update';
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$id = TagURI::mint('%s:%s:%s',
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$verb,
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$actor->getURI(),
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common_date_iso8601(date()));
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// @fixme consolidate all these NS settings somewhere
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$attributes = array('xmlns' => Activity::ATOM,
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'xmlns:activity' => 'http://activitystrea.ms/spec/1.0/',
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'xmlns:thr' => 'http://purl.org/syndication/thread/1.0',
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'xmlns:georss' => 'http://www.georss.org/georss',
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'xmlns:ostatus' => 'http://ostatus.org/schema/1.0');
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$entry = new XMLStringer();
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$entry->elementStart('entry', $attributes);
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$entry->element('id', null, $id);
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$entry->element('title', null, $text);
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$entry->element('summary', null, $text);
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$entry->element('published', null, common_date_w3dtf(common_sql_now()));
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$entry->element('activity:verb', null, $verb);
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$entry->raw($actor->asAtomAuthor());
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$entry->raw($actor->asActivityActor());
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$entry->raw($object->asActivityNoun('object'));
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$entry->elementEnd('entry');
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$xml = $entry->getString();
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common_log(LOG_INFO, "Posting to Salmon endpoint $this->salmonuri: $xml");
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$salmon = new Salmon(); // ?
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$salmon->post($this->salmonuri, $xml);
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}
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}
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public function notifyActivity($activity)
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{
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if ($this->salmonuri) {
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$xml = $activity->asString();
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$salmon = new Salmon(); // ?
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$salmon->post($this->salmonuri, $xml);
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}
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return;
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}
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function getBestName()
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{
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if ($this->isGroup()) {
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return $this->localGroup()->getBestName();
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} else {
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return $this->localProfile()->getBestName();
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}
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}
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function atomFeed($actor)
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{
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$feed = new Atom10Feed();
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// @fixme should these be set up somewhere else?
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$feed->addNamespace('activity', 'http://activitystrea.ms/spec/1.0/');
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$feed->addNamespace('thr', 'http://purl.org/syndication/thread/1.0');
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$feed->addNamespace('georss', 'http://www.georss.org/georss');
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$feed->addNamespace('ostatus', 'http://ostatus.org/schema/1.0');
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$taguribase = common_config('integration', 'taguri');
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$feed->setId("tag:{$taguribase}:UserTimeline:{$actor->id}"); // ???
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$feed->setTitle($actor->getBestName() . ' timeline'); // @fixme
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$feed->setUpdated(time());
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$feed->setPublished(time());
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$feed->addLink(common_local_url('ApiTimelineUser',
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array('id' => $actor->id,
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'type' => 'atom')),
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array('rel' => 'self',
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'type' => 'application/atom+xml'));
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$feed->addLink(common_local_url('userbyid',
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array('id' => $actor->id)),
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array('rel' => 'alternate',
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'type' => 'text/html'));
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return $feed;
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}
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/**
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* Read and post notices for updates from the feed.
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* Currently assumes that all items in the feed are new,
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* coming from a PuSH hub.
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*
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* @param DOMDocument $feed
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*/
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public function processFeed($feed)
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{
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$entries = $feed->getElementsByTagNameNS(Activity::ATOM, 'entry');
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if ($entries->length == 0) {
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common_log(LOG_ERR, __METHOD__ . ": no entries in feed update, ignoring");
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return;
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}
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for ($i = 0; $i < $entries->length; $i++) {
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$entry = $entries->item($i);
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$this->processEntry($entry, $feed);
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}
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}
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/**
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* Process a posted entry from this feed source.
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*
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* @param DOMElement $entry
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* @param DOMElement $feed for context
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*/
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protected function processEntry($entry, $feed)
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{
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$activity = new Activity($entry, $feed);
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$debug = var_export($activity, true);
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common_log(LOG_DEBUG, $debug);
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if ($activity->verb == ActivityVerb::POST) {
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$this->processPost($activity);
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} else {
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common_log(LOG_INFO, "Ignoring activity with unrecognized verb $activity->verb");
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}
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}
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/**
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* Process an incoming post activity from this remote feed.
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* @param Activity $activity
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*/
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protected function processPost($activity)
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{
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if ($this->isGroup()) {
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// @fixme validate these profiles in some way!
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$oprofile = self::ensureActorProfile($activity);
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} else {
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$actorUri = self::getActorProfileURI($activity);
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if ($actorUri == $this->uri) {
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// @fixme check if profile info has changed and update it
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} else {
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// @fixme drop or reject the messages once we've got the canonical profile URI recorded sanely
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common_log(LOG_INFO, "OStatus: Warning: non-group post with unexpected author: $actorUri expected $this->uri");
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//return;
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}
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$oprofile = $this;
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}
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$sourceUri = $activity->object->id;
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$dupe = Notice::staticGet('uri', $sourceUri);
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if ($dupe) {
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common_log(LOG_INFO, "OStatus: ignoring duplicate post: $sourceUri");
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return;
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}
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$sourceUrl = null;
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if ($activity->object->link) {
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$sourceUrl = $activity->object->link;
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} else if (preg_match('!^https?://!', $activity->object->id)) {
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$sourceUrl = $activity->object->id;
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}
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// @fixme sanitize and save HTML content if available
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$content = $activity->object->title;
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$params = array('is_local' => Notice::REMOTE_OMB,
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'url' => $sourceUrl,
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'uri' => $sourceUri);
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$location = $activity->context->location;
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if ($location) {
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$params['lat'] = $location->lat;
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$params['lon'] = $location->lon;
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if ($location->location_id) {
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$params['location_ns'] = $location->location_ns;
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$params['location_id'] = $location->location_id;
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}
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}
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// @fixme save detailed ostatus source info
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// @fixme ensure that groups get handled correctly
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$saved = Notice::saveNew($oprofile->localProfile()->id,
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$content,
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'ostatus',
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$params);
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}
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/**
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* @param string $profile_url
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* @return Ostatus_profile
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* @throws FeedSubException
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*/
|
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public static function ensureProfile($profile_uri)
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{
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// Get the canonical feed URI and check it
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$discover = new FeedDiscovery();
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$feeduri = $discover->discoverFromURL($profile_uri);
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//$feedsub = FeedSub::ensureFeed($feeduri, $discover->feed);
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$huburi = $discover->getAtomLink('hub');
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$salmonuri = $discover->getAtomLink('salmon');
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if (!$huburi) {
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// We can only deal with folks with a PuSH hub
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throw new FeedSubNoHubException();
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}
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// Try to get a profile from the feed activity:subject
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$feedEl = $discover->feed->documentElement;
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$subject = ActivityUtils::child($feedEl, Activity::SUBJECT, Activity::SPEC);
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if (!empty($subject)) {
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$subjObject = new ActivityObject($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, $temp_filename);
|
|
|
|
if ($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);
|
|
|
|
$huburi = $discover->getAtomLink('hub');
|
|
$salmonuri = $discover->getAtomLink('salmon');
|
|
|
|
if (!$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;
|
|
}
|
|
}
|
|
}
|