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 $parameters = [])
  21         {
  22                 if (empty($parameters['profile'])) {
  23                         return;
  24                 }
  25
  26                 Profile::load(DI::app(), $parameters['profile']);
  27         }
  28
  29         public static function post(array $parameters = [])
  30         {
  31                 $a = DI::app();
  32
  33                 if (empty($parameters['profile']) || !empty($_POST['cancel']) || empty($_POST['dfrn_url'])) {
  34                         DI::baseUrl()->redirect();
  35                 }
  36
  37                 if (empty($a->profile['uid'])) {
  38                         notice(DI::l10n()->t('Profile unavailable.') . EOL);
  39                         return;
  40                 }
  41
  42                 $url = trim($_POST['dfrn_url']);
  43                 if (!strlen($url)) {
  44                         notice(DI::l10n()->t("Invalid locator") . EOL);
  45                         return;
  46                 }
  47
  48                 // Detect the network, make sure the provided URL is valid
  49                 $data = Probe::uri($url);
  50                 if ($data['network'] == Protocol::PHANTOM) {
  51                         notice(DI::l10n()->t("The provided profile link doesn't seem to be valid"));
  52                         return;
  53                 }
  54
  55                 // Fetch link for the "remote follow" functionality of the given profile
  56                 $follow_link_template = Probe::getRemoteFollowLink($url);
  57
  58                 if (empty($follow_link_template)) {
  59                         notice(DI::l10n()->t("Remote subscription can't be done for your network. Please subscribe directly on your system."));
  60                         return;
  61                 }
  62
  63                 Logger::notice('Remote request', ['url' => $url, 'follow' => $a->profile['url'], 'remote' => $follow_link_template]);
  64
  65                 // Substitute our user's feed URL into $follow_link_template
  66                 // Send the subscriber home to subscribe
  67                 // Diaspora needs the uri in the format user@domain.tld
  68                 if ($data['network'] == Protocol::DIASPORA) {
  69                         $uri = urlencode($a->profile['addr']);
  70                 } else {
  71                         $uri = urlencode($a->profile['url']);
  72                 }
  73
  74                 $follow_link = str_replace('{uri}', $uri, $follow_link_template);
  75                 System::externalRedirect($follow_link);
  76         }
  77
  78         public static function content(array $parameters = [])
  79         {
  80                 $a = DI::app();
  81
  82                 if (empty($parameters['profile']) || empty($a->profile)) {
  83                         return '';
  84                 }
  85
  86                 $target_addr = $a->profile['addr'];
  87                 $target_url = $a->profile['url'];
  88
  89                 $tpl = Renderer::getMarkupTemplate('auto_request.tpl');
  90                 $o = Renderer::replaceMacros($tpl, [
  91                         '$header'        => DI::l10n()->t('Friend/Connection Request'),
  92                         '$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, $target_url),
  93                         '$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'),
  94                         '$your_address'  => DI::l10n()->t('Your Webfinger address or profile URL:'),
  95                         '$pls_answer'    => DI::l10n()->t('Please answer the following:'),
  96                         '$submit'        => DI::l10n()->t('Submit Request'),
  97                         '$cancel'        => DI::l10n()->t('Cancel'),
  98
  99                         '$request'       => 'remote_follow/' . $parameters['profile'],
 100                         '$name'          => $a->profile['name'],
 101                         '$myaddr'        => '', //Profile::getMyURL(),
 102                 ]);
 103                 return $o;
 104         }
 105 }