actions/unsubscribe.php

   1 <?php
   2 /*
   3  * Laconica - a distributed open-source microblogging tool
   4  * Copyright (C) 2008, Controlez-Vous, Inc.
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU Affero General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Affero General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Affero General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 class UnsubscribeAction extends Action {
  21
  22         function handle($args) {
  23                 parent::handle($args);
  24                 if (!common_logged_in()) {
  25                         common_user_error(_('Not logged in.'));
  26                         return;
  27                 }
  28
  29                 $user = common_current_user();
  30
  31                 if ($_SERVER['REQUEST_METHOD'] != 'POST') {
  32                         common_redirect(common_local_url('subscriptions', array('nickname' => $user->nickname)));
  33                         return;
  34                 }
  35
  36                 # CSRF protection
  37
  38                 $token = $this->trimmed('token');
  39
  40                 if (!$token || $token != common_session_token()) {
  41                         $this->client_error(_('There was a problem with your session token. Try again, please.'));
  42                         return;
  43                 }
  44
  45                 $other_nickname = $this->arg('unsubscribeto');
  46                 $other = User::staticGet('nickname', $other_nickname);
  47                 if (!$other) {
  48                         common_user_error(_('No such user.'));
  49                         return;
  50                 }
  51
  52                 if (!$user->isSubscribed($other)) {
  53                         common_server_error(_('Not subscribed!.'));
  54                 }
  55
  56                 $sub = DB_DataObject::factory('subscription');
  57
  58                 $sub->subscriber = $user->id;
  59                 $sub->subscribed = $other->id;
  60
  61                 $sub->find(true);
  62
  63                 // note we checked for existence above
  64
  65                 if (!$sub->delete()) {
  66                         common_server_error(_('Couldn\'t delete subscription.'));
  67                         return;
  68                 }
  69
  70                 common_redirect(common_local_url('subscriptions', array('nickname' =>
  71                                                                                                                                 $user->nickname)));
  72         }
  73 }