<?php /** * @copyright Copyright (C) 2010-2022, the Friendica project * * @license GNU AGPL version 3 or any later version * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <https://www.gnu.org/licenses/>. * */ use Friendica\App; use Friendica\Content\Text\BBCode; use Friendica\Content\Widget; use Friendica\Core\Logger; use Friendica\Core\Renderer; use Friendica\Core\Session; use Friendica\Core\System; use Friendica\Database\DBA; use Friendica\DI; use Friendica\Model\Contact; use Friendica\Model\Item; use Friendica\Model\Post; use Friendica\Model\User; use Friendica\Module\ActivityPub\Objects; use Friendica\Module\Response; use Friendica\Network\HTTPException; use Friendica\Protocol\ActivityPub; use Friendica\Protocol\DFRN; use Friendica\Protocol\Diaspora; function display_init(App $a) { if (ActivityPub::isRequest()) { (new Objects(DI::l10n(), DI::baseUrl(), DI::args(), DI::logger(), DI::profiler(), DI::apiResponse(), $_SERVER, ['guid' => DI::args()->getArgv()[1] ?? null]))->run(); } if (DI::config()->get('system', 'block_public') && !Session::isAuthenticated()) { return; } $nick = ((DI::args()->getArgc() > 1) ? DI::args()->getArgv()[1] : ''); $item = null; $item_user = local_user(); $fields = ['uri-id', 'parent-uri-id', 'author-id', 'author-link', 'body', 'uid', 'guid', 'gravity']; // If there is only one parameter, then check if this parameter could be a guid if (DI::args()->getArgc() == 2) { $nick = ''; // Does the local user have this item? if (local_user()) { $item = Post::selectFirstForUser(local_user(), $fields, ['guid' => DI::args()->getArgv()[1], 'uid' => local_user()]); if (DBA::isResult($item)) { $nick = $a->getLoggedInUserNickname(); } } // Is this item private but could be visible to the remove visitor? if (!DBA::isResult($item) && remote_user()) { $item = Post::selectFirst($fields, ['guid' => DI::args()->getArgv()[1], 'private' => Item::PRIVATE, 'origin' => true]); if (DBA::isResult($item)) { if (!Contact::isFollower(remote_user(), $item['uid'])) { $item = null; } else { $item_user = $item['uid']; } } } // Is it an item with uid=0? if (!DBA::isResult($item)) { $item = Post::selectFirstForUser(local_user(), $fields, ['guid' => DI::args()->getArgv()[1], 'private' => [Item::PUBLIC, Item::UNLISTED], 'uid' => 0]); } } elseif (DI::args()->getArgc() >= 3 && $nick == 'feed-item') { $uri_id = DI::args()->getArgv()[2]; if (substr($uri_id, -5) == '.atom') { $uri_id = substr($uri_id, 0, -5); } $item = Post::selectFirstForUser(local_user(), $fields, ['uri-id' => $uri_id, 'private' => [Item::PUBLIC, Item::UNLISTED], 'uid' => 0]); } if (!DBA::isResult($item)) { return; } if (DI::args()->getArgc() >= 3 && $nick == 'feed-item') { displayShowFeed($item['uri-id'], $item['uid'], DI::args()->getArgc() > 3 && DI::args()->getArgv()[3] == 'conversation.atom'); } if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) { Logger::info('Directly serving XML for uri-id '.$item['uri-id']); displayShowFeed($item['uri-id'], $item['uid'], false); } if ($item['gravity'] != GRAVITY_PARENT) { $parent = Post::selectFirstForUser($item_user, $fields, ['uid' => $item['uid'], 'uri-id' => $item['parent-uri-id']]); $item = $parent ?: $item; } DI::page()['aside'] = Widget\VCard::getHTML(display_fetchauthor($item)); } function display_fetchauthor($item) { if (Diaspora::isReshare($item['body'], true)) { $shared = Item::getShareArray($item); if (!empty($shared['profile'])) { $contact = Contact::getByURLForUser($shared['profile'], local_user()); } } if (empty($contact)) { $contact = Contact::getById($item['author-id']); } return $contact; } function display_content(App $a, $update = false, $update_uid = 0) { if (DI::config()->get('system','block_public') && !Session::isAuthenticated()) { throw new HTTPException\ForbiddenException(DI::l10n()->t('Public access denied.')); } $o = ''; $item = null; $force = (bool)($_REQUEST['force'] ?? false); if ($update) { $uri_id = $_REQUEST['uri_id']; $item = Post::selectFirst(['uid', 'parent-uri-id'], ['uri-id' => $uri_id, 'uid' => [0, $update_uid]], ['order' => ['uid' => true]]); if (!empty($item)) { if ($item['uid'] != 0) { $a->setProfileOwner($item['uid']); } else { $a->setProfileOwner($update_uid); } $parent_uri_id = $item['parent-uri-id']; } } else { $uri_id = ((DI::args()->getArgc() > 2) ? DI::args()->getArgv()[2] : 0); $parent_uri_id = $uri_id; if (DI::args()->getArgc() == 2) { $fields = ['uri-id', 'parent-uri-id', 'uid']; if (local_user()) { $condition = ['guid' => DI::args()->getArgv()[1], 'uid' => [0, local_user()]]; $item = Post::selectFirstForUser(local_user(), $fields, $condition, ['order' => ['uid' => true]]); if (DBA::isResult($item)) { $uri_id = $item['uri-id']; $parent_uri_id = $item['parent-uri-id']; } } if (($parent_uri_id == 0) && remote_user()) { $item = Post::selectFirst($fields, ['guid' => DI::args()->getArgv()[1], 'private' => Item::PRIVATE, 'origin' => true]); if (DBA::isResult($item) && Contact::isFollower(remote_user(), $item['uid'])) { $uri_id = $item['uri-id']; $parent_uri_id = $item['parent-uri-id']; } } if ($parent_uri_id == 0) { $condition = ['private' => [Item::PUBLIC, Item::UNLISTED], 'guid' => DI::args()->getArgv()[1], 'uid' => 0]; $item = Post::selectFirstForUser(local_user(), $fields, $condition); if (DBA::isResult($item)) { $uri_id = $item['uri-id']; $parent_uri_id = $item['parent-uri-id']; } } } } if (empty($item)) { throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.')); } if (!DI::pConfig()->get(local_user(), 'system', 'detailed_notif')) { DI::notification()->setAllSeenForUser(local_user(), ['parent-uri-id' => $item['parent-uri-id']]); DI::notify()->setAllSeenForUser(local_user(), ['parent-uri-id' => $item['parent-uri-id']]); } // We are displaying an "alternate" link if that post was public. See issue 2864 $is_public = Post::exists(['uri-id' => $uri_id, 'private' => [Item::PUBLIC, Item::UNLISTED]]); if ($is_public) { // For the atom feed the nickname doesn't matter at all, we only need the item id. $alternate = DI::baseUrl().'/display/feed-item/'.$uri_id.'.atom'; $conversation = DI::baseUrl().'/display/feed-item/' . $parent_uri_id . '/conversation.atom'; } else { $alternate = ''; $conversation = ''; } DI::page()['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'), ['$alternate' => $alternate, '$conversation' => $conversation]); $is_remote_contact = false; $item_uid = local_user(); $page_uid = 0; $parent = null; if (!local_user() && !empty($parent_uri_id)) { $parent = Post::selectFirst(['uid'], ['uri-id' => $parent_uri_id, 'wall' => true]); } if (DBA::isResult($parent)) { $page_uid = $page_uid ?? 0 ?: $parent['uid']; $is_remote_contact = Session::getRemoteContactID($page_uid); if ($is_remote_contact) { $item_uid = $parent['uid']; } } else { $page_uid = $item['uid']; } if (!empty($page_uid) && ($page_uid != local_user())) { $page_user = User::getById($page_uid); } $is_owner = local_user() && (in_array($page_uid, [local_user(), 0])); if (!empty($page_user['hidewall']) && !$is_owner && !$is_remote_contact) { throw new HTTPException\ForbiddenException(DI::l10n()->t('Access to this profile has been restricted.')); } // We need the editor here to be able to reshare an item. if ($is_owner && !$update) { $o .= DI::conversation()->statusEditor([], 0, true); } $sql_extra = Item::getPermissionsSQLByUserId($page_uid); if (local_user() && (local_user() == $page_uid)) { $condition = ['parent-uri-id' => $parent_uri_id, 'uid' => local_user(), 'unseen' => true]; $unseen = Post::exists($condition); } else { $unseen = false; } if ($update && !$unseen && !$force) { return ''; } $condition = ["`uri-id` = ? AND `uid` IN (0, ?) " . $sql_extra, $uri_id, $item_uid]; $fields = ['parent-uri-id', 'body', 'title', 'author-name', 'author-avatar', 'plink', 'author-id', 'owner-id', 'contact-id']; $item = Post::selectFirstForUser($page_uid, $fields, $condition); if (!DBA::isResult($item)) { throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.')); } $item['uri-id'] = $item['parent-uri-id']; if ($unseen) { $condition = ['parent-uri-id' => $parent_uri_id, 'uid' => local_user(), 'unseen' => true]; Item::update(['unseen' => false], $condition); } if (!$update && local_user()) { $o .= "<script> var netargs = '?uri_id=" . $item['uri-id'] . "'; </script>"; } $o .= DI::conversation()->create([$item], 'display', $update_uid, false, 'commented', $item_uid); // Preparing the meta header $description = trim(BBCode::toPlaintext($item['body'])); $title = trim(BBCode::toPlaintext($item['title'])); $author_name = $item['author-name']; $image = DI::baseUrl()->remove($item['author-avatar']); if ($title == '') { $title = $author_name; } // Limit the description to 160 characters if (strlen($description) > 160) { $description = substr($description, 0, 157) . '...'; } $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here $page = DI::page(); if (DBA::exists('contact', ['unsearchable' => true, 'id' => [$item['contact-id'], $item['author-id'], $item['owner-id']]])) { $page['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n"; } DI::page()['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n"; $page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n"; $page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n"; $page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n"; // Schema.org microdata $page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n"; $page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n"; $page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n"; $page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n"; // Twitter cards $page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n"; $page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n"; $page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n"; $page['htmlhead'] .= '<meta name="twitter:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n"; $page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n"; // Dublin Core $page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n"; $page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n"; // Open Graph $page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n"; $page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n"; $page['htmlhead'] .= '<meta property="og:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n"; $page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n"; $page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n"; $page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n"; // article:tag return $o; } function displayShowFeed(int $uri_id, int $uid, bool $conversation) { $xml = DFRN::itemFeed($uri_id, $uid, $conversation); if ($xml == '') { throw new HTTPException\InternalServerErrorException(DI::l10n()->t('The feed for this item is unavailable.')); } System::httpExit($xml, Response::TYPE_ATOM); }