688 lines
24 KiB
PHP
688 lines
24 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 FeedSubPlugin
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* @maintainer Brion Vibber <brion@status.net>
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*/
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/*
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PuSH subscription flow:
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$profile->subscribe()
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generate random verification token
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save to verify_token
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sends a sub request to the hub...
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main/push/callback
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hub sends confirmation back to us via GET
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We verify the request, then echo back the challenge.
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On our end, we save the time we subscribed and the lease expiration
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main/push/callback
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hub sends us updates via POST
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*/
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class FeedDBException extends FeedSubException
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{
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public $obj;
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function __construct($obj)
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{
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parent::__construct('Database insert failure');
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$this->obj = $obj;
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}
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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 $id;
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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 $homeuri;
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// PuSH subscription data
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public $huburi;
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public $secret;
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public $verify_token;
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public $sub_state; // subscribe, active, unsubscribe
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public $sub_start;
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public $sub_end;
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public $salmonuri;
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public $created;
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public $lastupdate;
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public /*static*/ function staticGet($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('id' => DB_DATAOBJECT_INT + 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 + DB_DATAOBJECT_NOTNULL,
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'homeuri' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
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'huburi' => DB_DATAOBJECT_STR,
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'secret' => DB_DATAOBJECT_STR,
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'verify_token' => DB_DATAOBJECT_STR,
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'sub_state' => DB_DATAOBJECT_STR,
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'sub_start' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME,
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'sub_end' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME,
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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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'lastupdate' => 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('id', 'integer',
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/*size*/ null,
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/*nullable*/ false,
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/*key*/ 'PRI',
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/*default*/ '0',
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/*extra*/ null,
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/*auto_increment*/ true),
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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, false, 'UNI'),
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new ColumnDef('homeuri', 'varchar',
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255, false),
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new ColumnDef('huburi', 'text',
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null, true),
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new ColumnDef('verify_token', 'varchar',
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32, true),
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new ColumnDef('secret', 'varchar',
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64, true),
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new ColumnDef('sub_state', "enum('subscribe','active','unsubscribe')",
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null, true),
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new ColumnDef('sub_start', 'datetime',
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null, true),
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new ColumnDef('sub_end', 'datetime',
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null, true),
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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('lastupdate', '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('id' => '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('id', true, 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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* @param FeedMunger $munger
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* @param boolean $isGroup is this a group record?
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* @return Ostatus_profile
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*/
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public static function ensureProfile($munger)
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{
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$profile = $munger->ostatusProfile();
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$current = self::staticGet('feeduri', $profile->feeduri);
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if ($current) {
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// @fixme we should probably update info as necessary
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return $current;
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}
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$profile->query('BEGIN');
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// Awful hack! Awful hack!
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$profile->verify = common_good_rand(16);
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$profile->secret = common_good_rand(32);
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try {
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$local = $munger->profile();
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if ($profile->isGroup()) {
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$group = new User_group();
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$group->nickname = $local->nickname . '@remote'; // @fixme
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$group->fullname = $local->fullname;
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$group->homepage = $local->homepage;
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$group->location = $local->location;
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$group->created = $local->created;
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$group->insert();
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if (empty($result)) {
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throw new FeedDBException($group);
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}
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$profile->group_id = $group->id;
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} else {
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$result = $local->insert();
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if (empty($result)) {
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throw new FeedDBException($local);
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}
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$profile->profile_id = $local->id;
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}
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$profile->created = common_sql_now();
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$profile->lastupdate = common_sql_now();
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$result = $profile->insert();
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if (empty($result)) {
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throw new FeedDBException($profile);
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}
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$profile->query('COMMIT');
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} catch (FeedDBException $e) {
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common_log_db_error($e->obj, 'INSERT', __FILE__);
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$profile->query('ROLLBACK');
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return false;
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}
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$avatar = $munger->getAvatar();
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if ($avatar) {
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try {
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$profile->updateAvatar($avatar);
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} catch (Exception $e) {
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common_log(LOG_ERR, "Exception setting OStatus avatar: " .
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$e->getMessage());
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}
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}
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return $profile;
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}
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/**
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* Download and update given avatar image
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* @param string $url
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* @throws Exception in various failure cases
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*/
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public function updateAvatar($url)
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{
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// @fixme this should be better encapsulated
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// ripped from oauthstore.php (for old OMB client)
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$temp_filename = tempnam(sys_get_temp_dir(), 'listener_avatar');
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copy($url, $temp_filename);
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// @fixme should we be using different ids?
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$imagefile = new ImageFile($this->id, $temp_filename);
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$filename = Avatar::filename($this->id,
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image_type_to_extension($imagefile->type),
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null,
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common_timestamp());
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rename($temp_filename, Avatar::path($filename));
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if ($this->isGroup()) {
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$group = $this->localGroup();
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$group->setOriginal($filename);
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} else {
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$profile = $this->localProfile();
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$profile->setOriginal($filename);
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}
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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 = $avatar->
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$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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$this->homeuri); // ?
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$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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* 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($mode='subscribe')
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{
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if ($this->sub_state != '') {
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throw new ServerException("Attempting to start PuSH subscription to feed in state $this->sub_state");
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}
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if (empty($this->huburi)) {
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if (common_config('feedsub', 'nohub')) {
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// Fake it! We're just testing remote feeds w/o hubs.
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return true;
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} else {
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throw new ServerException("Attempting to start PuSH subscription for feed with no hub");
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}
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}
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return $this->doSubscribe('subscribe');
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}
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/**
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* Send a PuSH unsubscription request to the hub for this feed.
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* The hub will later send us a confirmation POST to /main/push/callback.
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*
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* @return bool true on success, false on failure
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* @throws ServerException if feed state is not valid
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*/
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public function unsubscribe() {
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if ($this->sub_state != 'active') {
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throw new ServerException("Attempting to end PuSH subscription to feed in state $this->sub_state");
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}
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if (empty($this->huburi)) {
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if (common_config('feedsub', 'nohub')) {
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// Fake it! We're just testing remote feeds w/o hubs.
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return true;
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} else {
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throw new ServerException("Attempting to end PuSH subscription for feed with no hub");
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}
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}
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return $this->doSubscribe('unsubscribe');
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}
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protected function doSubscribe($mode)
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{
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$orig = clone($this);
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$this->verify_token = md5(mt_rand() . ':' . $this->feeduri);
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$this->sub_state = $mode;
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$this->update($orig);
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unset($orig);
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try {
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$callback = common_local_url('pushcallback', array('feed' => $this->id));
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$headers = array('Content-Type: application/x-www-form-urlencoded');
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$post = array('hub.mode' => $mode,
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'hub.callback' => $callback,
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'hub.verify' => 'async',
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'hub.verify_token' => $this->verify_token,
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'hub.secret' => $this->secret,
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//'hub.lease_seconds' => 0,
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'hub.topic' => $this->feeduri);
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$client = new HTTPClient();
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$response = $client->post($this->huburi, $headers, $post);
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$status = $response->getStatus();
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if ($status == 202) {
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common_log(LOG_INFO, __METHOD__ . ': sub req ok, awaiting verification callback');
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return true;
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} else if ($status == 204) {
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common_log(LOG_INFO, __METHOD__ . ': sub req ok and verified');
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return true;
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} else if ($status >= 200 && $status < 300) {
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common_log(LOG_ERR, __METHOD__ . ": sub req returned unexpected HTTP $status: " . $response->getBody());
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return false;
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} else {
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common_log(LOG_ERR, __METHOD__ . ": sub req failed with HTTP $status: " . $response->getBody());
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return false;
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}
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} catch (Exception $e) {
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// wtf!
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common_log(LOG_ERR, __METHOD__ . ": error \"{$e->getMessage()}\" hitting hub $this->huburi subscribing to $this->feeduri");
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$orig = clone($this);
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$this->verify_token = null;
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$this->sub_state = null;
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$this->update($orig);
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unset($orig);
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return false;
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}
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}
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/**
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* Save PuSH subscription confirmation.
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* Sets approximate lease start and end times and finalizes state.
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*
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* @param int $lease_seconds provided hub.lease_seconds parameter, if given
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*/
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public function confirmSubscribe($lease_seconds=0)
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{
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$original = clone($this);
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$this->sub_state = 'active';
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$this->sub_start = common_sql_date(time());
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if ($lease_seconds > 0) {
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$this->sub_end = common_sql_date(time() + $lease_seconds);
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} else {
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$this->sub_end = null;
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}
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$this->lastupdate = common_sql_date();
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return $this->update($original);
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}
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/**
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* Save PuSH unsubscription confirmation.
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* Wipes active PuSH sub info and resets state.
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*/
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public function confirmUnsubscribe()
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{
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$original = clone($this);
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$this->verify_token = null;
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$this->secret = null;
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$this->sub_state = null;
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$this->sub_start = null;
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$this->sub_end = null;
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$this->lastupdate = common_sql_date();
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return $this->update($original);
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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
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* @param $verb eg Activity::SUBSCRIBE or Activity::JOIN
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* @param $object object of the action; if null, the remote entity itself is assumed
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*/
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public function notify(Profile $actor, $verb, $object=null)
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{
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if ($object == null) {
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$object = $this;
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}
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if ($this->salmonuri) {
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$text = 'update'; // @fixme
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$id = 'tag:' . common_config('site', 'server') .
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':' . $verb .
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':' . $actor->id .
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':' . time(); // @fixme
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$entry = new Atom10Entry();
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$entry->elementStart('entry');
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$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());
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$entry->element('activity:verb', null, $verb);
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$entry->raw($profile->asAtomAuthor());
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$entry->raw($profile->asActivityActor());
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$entry->raw($object->asActivityNoun('object'));
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$entry->elmentEnd('entry');
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$feed = $this->atomFeed($actor);
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$feed->initFeed();
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$feed->addEntry($entry);
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$feed->renderEntries();
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$feed->endFeed();
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$xml = $feed->getString();
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|
common_log(LOG_INFO, "Posting to Salmon endpoint $salmon: $xml");
|
|
|
|
$salmon = new Salmon(); // ?
|
|
$salmon->post($this->salmonuri, $xml);
|
|
}
|
|
}
|
|
|
|
function getBestName()
|
|
{
|
|
if ($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->addNamesapce('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_url('ApiTimelineUser',
|
|
array('id' => $actor->id,
|
|
'type' => 'atom')),
|
|
array('rel' => 'self',
|
|
'type' => 'application/atom+xml'));
|
|
|
|
$feed->addLink(common_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 string $xml source of Atom or RSS feed
|
|
* @param string $hmac X-Hub-Signature header, if present
|
|
*/
|
|
public function postUpdates($xml, $hmac)
|
|
{
|
|
common_log(LOG_INFO, __METHOD__ . ": packet for \"$this->feeduri\"! $hmac $xml");
|
|
|
|
if ($this->sub_state != 'active') {
|
|
common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH for inactive feed $this->feeduri (in state '$this->sub_state')");
|
|
return;
|
|
}
|
|
|
|
if ($this->secret) {
|
|
if (preg_match('/^sha1=([0-9a-fA-F]{40})$/', $hmac, $matches)) {
|
|
$their_hmac = strtolower($matches[1]);
|
|
$our_hmac = hash_hmac('sha1', $xml, $this->secret);
|
|
if ($their_hmac !== $our_hmac) {
|
|
common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH with bad SHA-1 HMAC: got $their_hmac, expected $our_hmac");
|
|
return;
|
|
}
|
|
} else {
|
|
common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH with bogus HMAC '$hmac'");
|
|
return;
|
|
}
|
|
} else if ($hmac) {
|
|
common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH with unexpected HMAC '$hmac'");
|
|
return;
|
|
}
|
|
|
|
require_once "XML/Feed/Parser.php";
|
|
$feed = new XML_Feed_Parser($xml, false, false, true);
|
|
$munger = new FeedMunger($feed);
|
|
|
|
$hits = 0;
|
|
foreach ($feed as $index => $entry) {
|
|
// @fixme this might sort in wrong order if we get multiple updates
|
|
|
|
$notice = $munger->notice($index);
|
|
|
|
// Double-check for oldies
|
|
// @fixme this could explode horribly for multiple feeds on a blog. sigh
|
|
|
|
$dupe = Notice::staticGet('uri', $notice->uri);
|
|
|
|
if (!empty($dupe)) {
|
|
common_log(LOG_WARNING, __METHOD__ . ": tried to save dupe notice for entry {$notice->uri} of feed {$this->feeduri}");
|
|
continue;
|
|
}
|
|
|
|
// @fixme need to ensure that groups get handled correctly
|
|
$saved = Notice::saveNew($notice->profile_id,
|
|
$notice->content,
|
|
'ostatus',
|
|
array('is_local' => Notice::REMOTE_OMB,
|
|
'uri' => $notice->uri,
|
|
'lat' => $notice->lat,
|
|
'lon' => $notice->lon,
|
|
'location_ns' => $notice->location_ns,
|
|
'location_id' => $notice->location_id));
|
|
|
|
/*
|
|
common_log(LOG_DEBUG, "going to check group delivery...");
|
|
if ($this->group_id) {
|
|
$group = User_group::staticGet($this->group_id);
|
|
if ($group) {
|
|
common_log(LOG_INFO, __METHOD__ . ": saving to local shadow group $group->id $group->nickname");
|
|
$groups = array($group);
|
|
} else {
|
|
common_log(LOG_INFO, __METHOD__ . ": lost the local shadow group?");
|
|
}
|
|
} else {
|
|
common_log(LOG_INFO, __METHOD__ . ": no local shadow groups");
|
|
$groups = array();
|
|
}
|
|
common_log(LOG_DEBUG, "going to add to inboxes...");
|
|
$notice->addToInboxes($groups, array());
|
|
common_log(LOG_DEBUG, "added to inboxes.");
|
|
*/
|
|
|
|
$hits++;
|
|
}
|
|
if ($hits == 0) {
|
|
common_log(LOG_INFO, __METHOD__ . ": no updates in packet for \"$this->feeduri\"! $xml");
|
|
}
|
|
}
|
|
}
|