src/Module/RemoteFollow.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, 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\App;
  25 use Friendica\App\Page;
  26 use Friendica\BaseModule;
  27 use Friendica\Content\Widget;
  28 use Friendica\Core\L10n;
  29 use Friendica\Core\Logger;
  30 use Friendica\Core\Protocol;
  31 use Friendica\Core\Renderer;
  32 use Friendica\Core\Search;
  33 use Friendica\Core\System;
  34 use Friendica\Model\Contact;
  35 use Friendica\Model\Profile;
  36 use Friendica\Model\User;
  37 use Friendica\Network\HTTPException;
  38 use Friendica\Network\Probe;
  39 use Friendica\Util\Profiler;
  40 use Psr\Log\LoggerInterface;
  41
  42 /**
  43  * Remotely follow the account on this system by the provided account
  44  */
  45 class RemoteFollow extends BaseModule
  46 {
  47         /** @var array */
  48         protected $owner;
  49         /** @var Page */
  50         protected $page;
  51
  52         public function __construct(L10n $l10n, App\BaseURL $baseUrl, App\Arguments $args, App\Page $page, LoggerInterface $logger, Profiler $profiler, Response $response, array $server, array $parameters = [])
  53         {
  54                 parent::__construct($l10n, $baseUrl, $args, $logger, $profiler, $response, $server, $parameters);
  55
  56                 $this->owner = User::getOwnerDataByNick($this->parameters['profile']);
  57                 if (!$this->owner) {
  58                         throw new HTTPException\NotFoundException($this->t('User not found.'));
  59                 }
  60
  61                 $this->page    = $page;
  62         }
  63
  64         protected function post(array $request = [])
  65         {
  66                 if (!empty($_POST['cancel']) || empty($_POST['dfrn_url'])) {
  67                         $this->baseUrl->redirect();
  68                 }
  69
  70                 if (empty($this->owner)) {
  71                         notice($this->t('Profile unavailable.'));
  72                         return;
  73                 }
  74
  75                 $url = Probe::cleanURI($_POST['dfrn_url']);
  76                 if (!strlen($url)) {
  77                         notice($this->t("Invalid locator"));
  78                         return;
  79                 }
  80
  81                 // Detect the network, make sure the provided URL is valid
  82                 $data = Contact::getByURL($url);
  83                 if (!$data) {
  84                         notice($this->t("The provided profile link doesn't seem to be valid"));
  85                         return;
  86                 }
  87
  88                 if (empty($data['subscribe'])) {
  89                         notice($this->t("Remote subscription can't be done for your network. Please subscribe directly on your system."));
  90                         return;
  91                 }
  92
  93                 Logger::notice('Remote request', ['url' => $url, 'follow' => $this->owner['url'], 'remote' => $data['subscribe']]);
  94
  95                 // Substitute our user's feed URL into $data['subscribe']
  96                 // Send the subscriber home to subscribe
  97                 // Diaspora needs the uri in the format user@domain.tld
  98                 if ($data['network'] == Protocol::DIASPORA) {
  99                         $uri = urlencode($this->owner['addr']);
 100                 } else {
 101                         $uri = urlencode($this->owner['url']);
 102                 }
 103
 104                 $follow_link = str_replace('{uri}', $uri, $data['subscribe']);
 105                 System::externalRedirect($follow_link);
 106         }
 107
 108         protected function content(array $request = []): string
 109         {
 110                 if (empty($this->owner)) {
 111                         return '';
 112                 }
 113
 114                 $this->page['aside'] = Widget\VCard::getHTML($this->owner);
 115
 116                 $target_addr = $this->owner['addr'];
 117                 $target_url = $this->owner['url'];
 118
 119                 $tpl = Renderer::getMarkupTemplate('auto_request.tpl');
 120                 $o = Renderer::replaceMacros($tpl, [
 121                         '$header'        => $this->t('Friend/Connection Request'),
 122                         '$page_desc'     => $this->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, $target_url),
 123                         '$invite_desc'   => $this->t('If you are not yet a member of the free social web, <a href="%s">follow this link to find a public Friendica node and join us today</a>.', Search::getGlobalDirectory() . '/servers'),
 124                         '$your_address'  => $this->t('Your Webfinger address or profile URL:'),
 125                         '$pls_answer'    => $this->t('Please answer the following:'),
 126                         '$submit'        => $this->t('Submit Request'),
 127                         '$cancel'        => $this->t('Cancel'),
 128
 129                         '$request'       => 'remote_follow/' . $this->parameters['profile'],
 130                         '$name'          => $this->owner['name'],
 131                         '$myaddr'        => Profile::getMyURL(),
 132                 ]);
 133                 return $o;
 134         }
 135 }