<?php /** * @copyright Copyright (C) 2010-2021, 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\Text\HTML; use Friendica\Core\ACL; use Friendica\Core\Logger; use Friendica\Core\Protocol; use Friendica\Core\Renderer; use Friendica\Core\Session; use Friendica\Database\DBA; use Friendica\DI; use Friendica\Model\Contact; use Friendica\Model\Item; use Friendica\Model\Post; use Friendica\Model\Profile; use Friendica\Module\Objects; use Friendica\Network\HTTPException; use Friendica\Protocol\ActivityPub; use Friendica\Protocol\DFRN; use Friendica\Util\Strings; function display_init(App $a) { if (ActivityPub::isRequest()) { Objects::rawContent(['guid' => $a->argv[1] ?? null]); } if (DI::config()->get('system', 'block_public') && !Session::isAuthenticated()) { return; } $nick = (($a->argc > 1) ? $a->argv[1] : ''); $item = null; $item_user = local_user(); $fields = ['uri-id', 'parent-uri-id', 'author-id', 'body', 'uid', 'guid', 'gravity']; // If there is only one parameter, then check if this parameter could be a guid if ($a->argc == 2) { $nick = ""; // Does the local user have this item? if (local_user()) { $item = Post::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]); if (DBA::isResult($item)) { $nick = $a->user["nickname"]; } } // Is this item private but could be visible to the remove visitor? if (!DBA::isResult($item) && remote_user()) { $item = Post::selectFirst($fields, ['guid' => $a->argv[1], 'private' => Item::PRIVATE, 'origin' => true]); if (DBA::isResult($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' => $a->argv[1], 'private' => [Item::PUBLIC, Item::UNLISTED], 'uid' => 0]); } } elseif ($a->argc >= 3 && $nick == 'feed-item') { $uri_id = $a->argv[2]; if (substr($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 ($a->argc >= 3 && $nick == 'feed-item') { displayShowFeed($item['uri-id'], $item['uid'], $a->argc > 3 && $a->argv[3] == 'conversation.atom'); } if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) { Logger::log('Directly serving XML for uri-id '.$item['uri-id'], Logger::DEBUG); 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; } $profiledata = display_fetchauthor($a, $item); if (strstr(Strings::normaliseLink($profiledata['url']), Strings::normaliseLink(DI::baseUrl()))) { $nickname = str_replace(Strings::normaliseLink(DI::baseUrl()) . '/profile/', '', Strings::normaliseLink($profiledata['url'])); if (!empty($a->user['nickname']) && $nickname != $a->user['nickname']) { $profile = DBA::selectFirst('owner-view', [], ['nickname' => $nickname]); if (DBA::isResult($profile)) { $profiledata = $profile; } $profiledata["network"] = Protocol::DFRN; } else { $profiledata = []; } } Profile::load($a, $nick, $profiledata); } function display_fetchauthor($a, $item) { $author = DBA::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]); $profiledata = []; $profiledata['uid'] = -1; $profiledata['nickname'] = $author['nick']; $profiledata['name'] = $author['name']; $profiledata['picdate'] = ''; $profiledata['photo'] = $author['photo']; $profiledata['url'] = $author['url']; $profiledata['network'] = $author['network']; // Check for a repeated message $shared = Item::getShareArray($item); if (!empty($shared) && empty($shared['comment'])) { if (!empty($shared['author'])) { $profiledata['name'] = $shared['author']; } if (!empty($shared['profile'])) { $profiledata['url'] = $shared['profile']; } if (!empty($shared['avatar'])) { $profiledata['photo'] = $shared['avatar']; } $profiledata["nickname"] = $profiledata["name"]; $profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]); $profiledata["address"] = ""; $profiledata["about"] = ""; } $profiledata = Contact::getByURLForUser($profiledata["url"], local_user()) ?: $profiledata; if (!empty($profiledata["photo"])) { $profiledata["photo"] = DI::baseUrl()->remove($profiledata["photo"]); } return $profiledata; } 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' => $update_uid]); if (!empty($item)) { if ($item['uid'] != 0) { $a->profile = ['uid' => intval($item['uid'])]; } else { $a->profile = ['uid' => intval($update_uid)]; } $parent_uri_id = $item['parent-uri-id']; } } else { $uri_id = (($a->argc > 2) ? $a->argv[2] : 0); $parent_uri_id = $uri_id; if ($a->argc == 2) { $fields = ['uri-id', 'parent-uri-id', 'uid']; if (local_user()) { $condition = ['guid' => $a->argv[1], 'uid' => local_user()]; $item = Post::selectFirstForUser(local_user(), $fields, $condition); if (DBA::isResult($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' => $a->argv[1], 'private' => Item::PRIVATE, 'origin' => true]); if (DBA::isResult($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' => $a->argv[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')) { DBA::update('notify', ['seen' => true], ['parent-uri-id' => $item['parent-uri-id'], 'uid' => local_user()]); } // 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(); $parent = null; if (!empty($parent_uri_id)) { $parent = Post::selectFirst(['uid'], ['uri-id' => $parent_uri_id, 'wall' => true]); } if (DBA::isResult($parent)) { $a->profile['uid'] = ($a->profile['uid'] ?? 0) ?: $parent['uid']; $is_remote_contact = Session::getRemoteContactID($a->profile['uid']); if ($is_remote_contact) { $item_uid = $parent['uid']; } } else { $a->profile = ['uid' => intval($item['uid'])]; } $page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]); if (DBA::isResult($page_contact)) { $a->page_contact = $page_contact; } $is_owner = (local_user() && (in_array($a->profile['uid'], [local_user(), 0])) ? true : false); if (!empty($a->profile['hidewall']) && !$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) { $x = [ 'is_owner' => true, 'allow_location' => $a->user['allow_location'], 'default_location' => $a->user['default-location'], 'nickname' => $a->user['nickname'], 'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'), 'acl' => ACL::getFullSelectorHTML(DI::page(), $a->user, true), 'bang' => '', 'visitor' => 'block', 'profile_uid' => local_user(), ]; $o .= status_editor($a, $x, 0, true); } $sql_extra = Item::getPermissionsSQLByUserId($a->profile['uid']); if (local_user() && (local_user() == $a->profile['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']; $item = Post::selectFirstForUser($a->profile['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>"; } $o .= conversation($a, [$item], 'display', $update_uid, false, 'commented', $item_uid); // Preparing the meta header $description = trim(HTML::toPlaintext(BBCode::convert($item["body"], false), 0, true)); $title = trim(HTML::toPlaintext(BBCode::convert($item["title"], false), 0, true)); $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.')); } header("Content-type: application/atom+xml"); echo $xml; exit(); }