src/Module/Profile/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\Profile;
  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\Session\Capability\IHandleUserSessions;
  34 use Friendica\Core\System;
  35 use Friendica\DI;
  36 use Friendica\Model\Contact;
  37 use Friendica\Model\Profile;
  38 use Friendica\Model\User;
  39 use Friendica\Module\Response;
  40 use Friendica\Navigation\SystemMessages;
  41 use Friendica\Network\HTTPException;
  42 use Friendica\Network\Probe;
  43 use Friendica\Util\Profiler;
  44 use Psr\Log\LoggerInterface;
  45
  46 /**
  47  * Remotely follow the account on this system by the provided account
  48  */
  49 class RemoteFollow extends BaseModule
  50 {
  51         /** @var SystemMessages */
  52         private $systemMessages;
  53         /** @var Page */
  54         protected $page;
  55         /** @var IHandleUserSessions */
  56         private $userSession;
  57
  58         /** @var array */
  59         protected $owner;
  60
  61         public function __construct(IHandleUserSessions $userSession, SystemMessages $systemMessages, L10n $l10n, App\BaseURL $baseUrl, App\Arguments $args, App\Page $page, LoggerInterface $logger, Profiler $profiler, Response $response, array $server, array $parameters = [])
  62         {
  63                 parent::__construct($l10n, $baseUrl, $args, $logger, $profiler, $response, $server, $parameters);
  64
  65                 $this->systemMessages = $systemMessages;
  66                 $this->page           = $page;
  67                 $this->userSession    = $userSession;
  68
  69                 $this->owner = User::getOwnerDataByNick($this->parameters['nickname']);
  70                 if (!$this->owner) {
  71                         throw new HTTPException\NotFoundException($this->t('User not found.'));
  72                 }
  73         }
  74
  75         protected function post(array $request = [])
  76         {
  77                 if (!empty($request['cancel']) || empty($request['dfrn_url'])) {
  78                         $this->baseUrl->redirect('profile/' . $this->parameters['nickname']);
  79                 }
  80
  81                 if (empty($this->owner)) {
  82                         $this->systemMessages->addNotice($this->t('Profile unavailable.'));
  83                         return;
  84                 }
  85
  86                 $url = Probe::cleanURI($request['dfrn_url']);
  87                 if (!strlen($url)) {
  88                         $this->systemMessages->addNotice($this->t('Invalid locator'));
  89                         return;
  90                 }
  91
  92                 // Detect the network, make sure the provided URL is valid
  93                 $data = Contact::getByURL($url);
  94                 if (!$data) {
  95                         $this->systemMessages->addNotice($this->t("The provided profile link doesn't seem to be valid"));
  96                         return;
  97                 }
  98
  99                 if (empty($data['subscribe'])) {
 100                         $this->systemMessages->addNotice($this->t("Remote subscription can't be done for your network. Please subscribe directly on your system."));
 101                         return;
 102                 }
 103
 104                 $this->logger->notice('Remote request', ['url' => $url, 'follow' => $this->owner['url'], 'remote' => $data['subscribe']]);
 105
 106                 // Substitute our user's feed URL into $data['subscribe']
 107                 // Send the subscriber home to subscribe
 108                 // Diaspora needs the uri in the format user@domain.tld
 109                 if ($data['network'] == Protocol::DIASPORA) {
 110                         $uri = urlencode($this->owner['addr']);
 111                 } else {
 112                         $uri = urlencode($this->owner['url']);
 113                 }
 114
 115                 $follow_link = str_replace('{uri}', $uri, $data['subscribe']);
 116                 System::externalRedirect($follow_link);
 117         }
 118
 119         protected function content(array $request = []): string
 120         {
 121                 $this->page['aside'] = Widget\VCard::getHTML($this->owner);
 122
 123                 $target_addr = $this->owner['addr'];
 124                 $target_url  = $this->owner['url'];
 125
 126                 $tpl = Renderer::getMarkupTemplate('auto_request.tpl');
 127                 return Renderer::replaceMacros($tpl, [
 128                         '$header'        => $this->t('Friend/Connection Request'),
 129                         '$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, $target_url),
 130                         '$invite_desc'   => $this->t('If you are not yet a member of the free social web, <a href="%s">follow this link to find a public Friendica node and join us today</a>.', Search::getGlobalDirectory() . '/servers'),
 131                         '$your_address'  => $this->t('Your Webfinger address or profile URL:'),
 132                         '$pls_answer'    => $this->t('Please answer the following:'),
 133                         '$submit'        => $this->t('Submit Request'),
 134                         '$cancel'        => $this->t('Cancel'),
 135
 136                         '$action'        => 'profile/' . $this->parameters['nickname'] . '/remote_follow',
 137                         '$name'          => $this->owner['name'],
 138                         '$myaddr'        => $this->userSession->getMyUrl(),
 139                 ]);
 140         }
 141 }