src/Module/RemoteFollow.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2021, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Module;
  23
  24 use Friendica\BaseModule;
  25 use Friendica\DI;
  26 use Friendica\Core\Logger;
  27 use Friendica\Core\Protocol;
  28 use Friendica\Core\Renderer;
  29 use Friendica\Core\Search;
  30 use Friendica\Core\System;
  31 use Friendica\Model\Contact;
  32 use Friendica\Model\Profile;
  33 use Friendica\Network\Probe;
  34
  35 /**
  36  * Remotely follow the account on this system by the provided account
  37  */
  38 class RemoteFollow extends BaseModule
  39 {
  40         public static function init(array $parameters = [])
  41         {
  42                 Profile::load(DI::app(), $parameters['profile']);
  43         }
  44
  45         public static function post(array $parameters = [])
  46         {
  47                 $a = DI::app();
  48
  49                 if (!empty($_POST['cancel']) || empty($_POST['dfrn_url'])) {
  50                         DI::baseUrl()->redirect();
  51                 }
  52
  53                 if (empty($a->profile['uid'])) {
  54                         notice(DI::l10n()->t('Profile unavailable.'));
  55                         return;
  56                 }
  57
  58                 $url = Probe::cleanURI($_POST['dfrn_url']);
  59                 if (!strlen($url)) {
  60                         notice(DI::l10n()->t("Invalid locator"));
  61                         return;
  62                 }
  63
  64                 // Detect the network, make sure the provided URL is valid
  65                 $data = Contact::getByURL($url);
  66                 if (!$data) {
  67                         notice(DI::l10n()->t("The provided profile link doesn't seem to be valid"));
  68                         return;
  69                 }
  70
  71                 if (empty($data['subscribe'])) {
  72                         notice(DI::l10n()->t("Remote subscription can't be done for your network. Please subscribe directly on your system."));
  73                         return;
  74                 }
  75
  76                 Logger::notice('Remote request', ['url' => $url, 'follow' => $a->profile['url'], 'remote' => $data['subscribe']]);
  77
  78                 // Substitute our user's feed URL into $data['subscribe']
  79                 // Send the subscriber home to subscribe
  80                 // Diaspora needs the uri in the format user@domain.tld
  81                 if ($data['network'] == Protocol::DIASPORA) {
  82                         $uri = urlencode($a->profile['addr']);
  83                 } else {
  84                         $uri = urlencode($a->profile['url']);
  85                 }
  86
  87                 $follow_link = str_replace('{uri}', $uri, $data['subscribe']);
  88                 System::externalRedirect($follow_link);
  89         }
  90
  91         public static function content(array $parameters = [])
  92         {
  93                 $a = DI::app();
  94
  95                 if (empty($a->profile)) {
  96                         return '';
  97                 }
  98
  99                 $target_addr = $a->profile['addr'];
 100                 $target_url = $a->profile['url'];
 101
 102                 $tpl = Renderer::getMarkupTemplate('auto_request.tpl');
 103                 $o = Renderer::replaceMacros($tpl, [
 104                         '$header'        => DI::l10n()->t('Friend/Connection Request'),
 105                         '$page_desc'     => DI::l10n()->t('Enter your Webfinger address (user@domain.tld) or profile URL here. If this isn\'t supported by your system, you have to subscribe to <strong>%s</strong> or <strong>%s</strong> directly on your system.', $target_addr, $target_url),
 106                         '$invite_desc'   => DI::l10n()->t('If you are not yet a member of the free social web, <a href="%s">follow this link to find a public Friendica node and join us today</a>.', Search::getGlobalDirectory() . '/servers'),
 107                         '$your_address'  => DI::l10n()->t('Your Webfinger address or profile URL:'),
 108                         '$pls_answer'    => DI::l10n()->t('Please answer the following:'),
 109                         '$submit'        => DI::l10n()->t('Submit Request'),
 110                         '$cancel'        => DI::l10n()->t('Cancel'),
 111
 112                         '$request'       => 'remote_follow/' . $parameters['profile'],
 113                         '$name'          => $a->profile['name'],
 114                         '$myaddr'        => Profile::getMyURL(),
 115                 ]);
 116                 return $o;
 117         }
 118 }