lib/accountmover.php

   1 <?php
   2 /**
   3  * StatusNet - the distributed open-source microblogging tool
   4  * Copyright (C) 2010, StatusNet, Inc.
   5  *
   6  * A class for moving an account to a new server
   7  *
   8  * PHP version 5
   9  *
  10  * This program is free software: you can redistribute it and/or modify
  11  * it under the terms of the GNU Affero General Public License as published by
  12  * the Free Software Foundation, either version 3 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU Affero General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Affero General Public License
  21  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22  *
  23  * @category  Account
  24  * @package   StatusNet
  25  * @author    Evan Prodromou <evan@status.net>
  26  * @copyright 2010 StatusNet, Inc.
  27  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
  28  * @link      http://status.net/
  29  */
  30
  31 if (!defined('STATUSNET')) {
  32     // This check helps protect against security problems;
  33     // your code file can't be executed directly from the web.
  34     exit(1);
  35 }
  36
  37 /**
  38  * Moves an account from this server to another
  39  *
  40  * @category  Account
  41  * @package   StatusNet
  42  * @author    Evan Prodromou <evan@status.net>
  43  * @copyright 2010 StatusNet, Inc.
  44  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
  45  * @link      http://status.net/
  46  */
  47
  48 class AccountMover
  49 {
  50     private $_user    = null;
  51     private $_profile = null;
  52     private $_remote  = null;
  53     private $_sink    = null;
  54
  55     function __construct($user, $remote, $password)
  56     {
  57         $this->_user    = $user;
  58         $this->_profile = $user->getProfile();
  59
  60         $oprofile = Ostatus_profile::ensureProfileURI($remote);
  61
  62         if (empty($oprofile)) {
  63             throw new Exception("Can't locate account {$remote}");
  64         }
  65
  66         $this->_remote = $oprofile->localProfile();
  67
  68         list($svcDocUrl, $username) = self::getServiceDocument($remote);
  69
  70         $this->_sink = new ActivitySink($svcDocUrl, $username, $password);
  71     }
  72
  73     static function getServiceDocument($remote)
  74     {
  75         $discovery = new Discovery();
  76
  77         $xrd = $discovery->lookup($remote);
  78
  79         if (empty($xrd)) {
  80             throw new Exception("Can't find XRD for $remote");
  81         }
  82
  83         $svcDocUrl = null;
  84         $username  = null;
  85
  86         foreach ($xrd->links as $link) {
  87             if ($link['rel'] == 'http://apinamespace.org/atom' &&
  88                 $link['type'] == 'application/atomsvc+xml') {
  89                 $svcDocUrl = $link['href'];
  90                 if (!empty($link['property'])) {
  91                     foreach ($link['property'] as $property) {
  92                         if ($property['type'] == 'http://apinamespace.org/atom/username') {
  93                             $username = $property['value'];
  94                             break;
  95                         }
  96                     }
  97                 }
  98                 break;
  99             }
 100         }
 101
 102         if (empty($svcDocUrl)) {
 103             throw new Exception("No AtomPub API service for $remote.");
 104         }
 105
 106         return array($svcDocUrl, $username);
 107     }
 108
 109     function move()
 110     {
 111         $stream = new UserActivityStream($this->_user);
 112
 113         $acts = array_reverse($stream->activities);
 114
 115         // Reverse activities to run in correct chron order
 116
 117         foreach ($acts as $act) {
 118             $this->_moveActivity($act);
 119         }
 120     }
 121
 122     private function _moveActivity($act)
 123     {
 124         switch ($act->verb) {
 125         case ActivityVerb::FAVORITE:
 126             // push it, then delete local
 127             $this->_sink->postActivity($act);
 128             $notice = Notice::staticGet('uri', $act->objects[0]->id);
 129             if (!empty($notice)) {
 130                 $fave = Fave::pkeyGet(array('user_id' => $this->_user->id,
 131                                             'notice_id' => $notice->id));
 132                 $fave->delete();
 133             }
 134             break;
 135         case ActivityVerb::POST:
 136             // XXX: send a reshare, not a post
 137             common_log(LOG_INFO, "Pushing notice {$act->objects[0]->id} to {$this->_remote->getURI()}");
 138             $this->_sink->postActivity($act);
 139             $notice = Notice::staticGet('uri', $act->objects[0]->id);
 140             if (!empty($notice)) {
 141                 $notice->delete();
 142             }
 143             break;
 144         case ActivityVerb::JOIN:
 145             $this->_sink->postActivity($act);
 146             $group = User_group::staticGet('uri', $act->objects[0]->id);
 147             if (!empty($group)) {
 148                 Group_member::leave($group->id, $this->_user->id);
 149             }
 150             break;
 151         case ActivityVerb::FOLLOW:
 152             if ($act->actor->id == $this->_user->uri) {
 153                 $this->_sink->postActivity($act);
 154                 $other = Profile::fromURI($act->objects[0]->id);
 155                 if (!empty($other)) {
 156                     Subscription::cancel($this->_profile, $other);
 157                 }
 158             } else {
 159                 $otherUser = User::staticGet('uri', $act->actor->id);
 160                 if (!empty($otherUser)) {
 161                     $otherProfile = $otherUser->getProfile();
 162                     Subscription::start($otherProfile, $this->_remote);
 163                     Subscription::cancel($otherProfile, $this->_user->getProfile());
 164                 } else {
 165                     // It's a remote subscription. Do something here!
 166                 }
 167             }
 168             break;
 169         }
 170     }
 171 }