src/Module/RemoteFollow.php

   1 <?php
   2
   3 namespace Friendica\Module;
   4
   5 use Friendica\BaseModule;
   6 use Friendica\DI;
   7 use Friendica\Core\Logger;
   8 use Friendica\Core\Protocol;
   9 use Friendica\Core\Renderer;
  10 use Friendica\Core\Search;
  11 use Friendica\Core\System;
  12 use Friendica\Model\Profile;
  13 use Friendica\Network\Probe;
  14
  15 /**
  16  * Remotely follow the account on this system by the provided account
  17  */
  18 class RemoteFollow extends BaseModule
  19 {
  20         public static function init(array $parameters = [])
  21         {
  22                 Profile::load(DI::app(), $parameters['profile']);
  23         }
  24
  25         public static function post(array $parameters = [])
  26         {
  27                 $a = DI::app();
  28
  29                 if (!empty($_POST['cancel']) || empty($_POST['dfrn_url'])) {
  30                         DI::baseUrl()->redirect();
  31                 }
  32
  33                 if (empty($a->profile['uid'])) {
  34                         notice(DI::l10n()->t('Profile unavailable.'));
  35                         return;
  36                 }
  37
  38                 $url = trim($_POST['dfrn_url']);
  39                 if (!strlen($url)) {
  40                         notice(DI::l10n()->t("Invalid locator"));
  41                         return;
  42                 }
  43
  44                 // Detect the network, make sure the provided URL is valid
  45                 $data = Probe::uri($url);
  46                 if ($data['network'] == Protocol::PHANTOM) {
  47                         notice(DI::l10n()->t("The provided profile link doesn't seem to be valid"));
  48                         return;
  49                 }
  50
  51                 // Fetch link for the "remote follow" functionality of the given profile
  52                 $follow_link_template = Probe::getRemoteFollowLink($url);
  53
  54                 if (empty($follow_link_template)) {
  55                         notice(DI::l10n()->t("Remote subscription can't be done for your network. Please subscribe directly on your system."));
  56                         return;
  57                 }
  58
  59                 Logger::notice('Remote request', ['url' => $url, 'follow' => $a->profile['url'], 'remote' => $follow_link_template]);
  60
  61                 // Substitute our user's feed URL into $follow_link_template
  62                 // Send the subscriber home to subscribe
  63                 // Diaspora needs the uri in the format user@domain.tld
  64                 if ($data['network'] == Protocol::DIASPORA) {
  65                         $uri = urlencode($a->profile['addr']);
  66                 } else {
  67                         $uri = urlencode($a->profile['url']);
  68                 }
  69
  70                 $follow_link = str_replace('{uri}', $uri, $follow_link_template);
  71                 System::externalRedirect($follow_link);
  72         }
  73
  74         public static function content(array $parameters = [])
  75         {
  76                 $a = DI::app();
  77
  78                 if (empty($a->profile)) {
  79                         return '';
  80                 }
  81
  82                 $target_addr = $a->profile['addr'];
  83                 $target_url = $a->profile['url'];
  84
  85                 $tpl = Renderer::getMarkupTemplate('auto_request.tpl');
  86                 $o = Renderer::replaceMacros($tpl, [
  87                         '$header'        => DI::l10n()->t('Friend/Connection Request'),
  88                         '$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, $target_url),
  89                         '$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'),
  90                         '$your_address'  => DI::l10n()->t('Your Webfinger address or profile URL:'),
  91                         '$pls_answer'    => DI::l10n()->t('Please answer the following:'),
  92                         '$submit'        => DI::l10n()->t('Submit Request'),
  93                         '$cancel'        => DI::l10n()->t('Cancel'),
  94
  95                         '$request'       => 'remote_follow/' . $parameters['profile'],
  96                         '$name'          => $a->profile['name'],
  97                         '$myaddr'        => Profile::getMyURL(),
  98                 ]);
  99                 return $o;
 100         }
 101 }