407 lines
14 KiB
PHP
407 lines
14 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2020, Friendica
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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use Friendica\App;
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use Friendica\Content\Pager;
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use Friendica\Content\Text\BBCode;
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use Friendica\Content\Text\HTML;
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use Friendica\Core\ACL;
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use Friendica\Core\Logger;
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use Friendica\Core\Protocol;
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use Friendica\Core\Renderer;
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use Friendica\Core\Session;
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use Friendica\Database\DBA;
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use Friendica\DI;
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use Friendica\Model\Contact;
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use Friendica\Model\Item;
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use Friendica\Model\Profile;
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use Friendica\Module\Objects;
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use Friendica\Network\HTTPException;
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use Friendica\Protocol\ActivityPub;
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use Friendica\Protocol\DFRN;
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use Friendica\Util\Strings;
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function display_init(App $a)
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{
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if (ActivityPub::isRequest()) {
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Objects::rawContent(['guid' => $a->argv[1] ?? null]);
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}
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if (DI::config()->get('system', 'block_public') && !Session::isAuthenticated()) {
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return;
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}
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$nick = (($a->argc > 1) ? $a->argv[1] : '');
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$item = null;
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$item_user = local_user();
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$fields = ['id', 'parent', 'author-id', 'body', 'uid', 'guid', 'gravity'];
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// If there is only one parameter, then check if this parameter could be a guid
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if ($a->argc == 2) {
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$nick = "";
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// Does the local user have this item?
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if (local_user()) {
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$item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'uid' => local_user()]);
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if (DBA::isResult($item)) {
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$nick = $a->user["nickname"];
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}
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}
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// Is this item private but could be visible to the remove visitor?
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if (!DBA::isResult($item) && remote_user()) {
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$item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => Item::PRIVATE, 'origin' => true]);
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if (DBA::isResult($item)) {
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if (!Contact::isFollower(remote_user(), $item['uid'])) {
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$item = null;
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} else {
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$item_user = $item['uid'];
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}
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}
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}
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// Is it an item with uid=0?
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if (!DBA::isResult($item)) {
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$item = Item::selectFirstForUser(local_user(), $fields, ['guid' => $a->argv[1], 'private' => [Item::PUBLIC, Item::UNLISTED], 'uid' => 0]);
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}
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} elseif ($a->argc >= 3 && $nick == 'feed-item') {
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$item_id = $a->argv[2];
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if (substr($item_id, -5) == '.atom') {
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$item_id = substr($item_id, 0, -5);
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}
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$item = Item::selectFirstForUser(local_user(), $fields, ['id' => $item_id, 'private' => [Item::PUBLIC, Item::UNLISTED], 'uid' => 0]);
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}
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if (!DBA::isResult($item)) {
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return;
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}
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if ($a->argc >= 3 && $nick == 'feed-item') {
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displayShowFeed($item['id'], $a->argc > 3 && $a->argv[3] == 'conversation.atom');
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}
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if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
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Logger::log('Directly serving XML for id '.$item['id'], Logger::DEBUG);
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displayShowFeed($item['id'], false);
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}
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if ($item['gravity'] != GRAVITY_PARENT) {
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$parent = Item::selectFirstForUser($item_user, $fields, ['id' => $item['parent']]);
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$item = $parent ?: $item;
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}
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$profiledata = display_fetchauthor($a, $item);
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if (strstr(Strings::normaliseLink($profiledata['url']), Strings::normaliseLink(DI::baseUrl()))) {
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$nickname = str_replace(Strings::normaliseLink(DI::baseUrl()) . '/profile/', '', Strings::normaliseLink($profiledata['url']));
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if (!empty($a->user['nickname']) && $nickname != $a->user['nickname']) {
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$profile = DBA::selectFirst('owner-view', [], ['nickname' => $nickname]);
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if (DBA::isResult($profile)) {
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$profiledata = $profile;
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}
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$profiledata["network"] = Protocol::DFRN;
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} else {
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$profiledata = [];
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}
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}
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Profile::load($a, $nick, $profiledata);
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}
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function display_fetchauthor($a, $item)
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{
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$author = DBA::selectFirst('contact', ['name', 'nick', 'photo', 'network', 'url'], ['id' => $item['author-id']]);
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$profiledata = [];
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$profiledata['uid'] = -1;
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$profiledata['nickname'] = $author['nick'];
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$profiledata['name'] = $author['name'];
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$profiledata['picdate'] = '';
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$profiledata['photo'] = $author['photo'];
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$profiledata['url'] = $author['url'];
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$profiledata['network'] = $author['network'];
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// Check for a repeated message
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$shared = Item::getShareArray($item);
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if (!empty($shared) && empty($shared['comment'])) {
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if (!empty($shared['author'])) {
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$profiledata['name'] = $shared['author'];
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}
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if (!empty($shared['profile'])) {
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$profiledata['url'] = $shared['profile'];
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}
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if (!empty($shared['avatar'])) {
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$profiledata['photo'] = $shared['avatar'];
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}
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$profiledata["nickname"] = $profiledata["name"];
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$profiledata["network"] = Protocol::matchByProfileUrl($profiledata["url"]);
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$profiledata["address"] = "";
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$profiledata["about"] = "";
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}
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$profiledata = Contact::getByURLForUser($profiledata["url"], local_user()) ?: $profiledata;
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if (!empty($profiledata["photo"])) {
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$profiledata["photo"] = DI::baseUrl()->remove($profiledata["photo"]);
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}
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return $profiledata;
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}
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function display_content(App $a, $update = false, $update_uid = 0)
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{
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if (DI::config()->get('system','block_public') && !Session::isAuthenticated()) {
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throw new HTTPException\ForbiddenException(DI::l10n()->t('Public access denied.'));
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}
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$o = '';
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$item = null;
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$force = (bool)($_REQUEST['force'] ?? false);
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if ($update) {
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$item_id = $_REQUEST['item_id'];
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$item = Item::selectFirst(['uid', 'parent', 'parent-uri'], ['id' => $item_id]);
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if ($item['uid'] != 0) {
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$a->profile = ['uid' => intval($item['uid'])];
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} else {
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$a->profile = ['uid' => intval($update_uid)];
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}
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$item_parent = $item['parent'];
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$item_parent_uri = $item['parent-uri'];
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} else {
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$item_id = (($a->argc > 2) ? $a->argv[2] : 0);
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$item_parent = $item_id;
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if ($a->argc == 2) {
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$item_parent = 0;
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$fields = ['id', 'parent', 'parent-uri', 'uid'];
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if (local_user()) {
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$condition = ['guid' => $a->argv[1], 'uid' => local_user()];
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$item = Item::selectFirstForUser(local_user(), $fields, $condition);
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if (DBA::isResult($item)) {
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$item_id = $item['id'];
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$item_parent = $item['parent'];
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$item_parent_uri = $item['parent-uri'];
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}
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}
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if (($item_parent == 0) && remote_user()) {
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$item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => Item::PRIVATE, 'origin' => true]);
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if (DBA::isResult($item) && Contact::isFollower(remote_user(), $item['uid'])) {
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$item_id = $item['id'];
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$item_parent = $item['parent'];
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$item_parent_uri = $item['parent-uri'];
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}
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}
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if ($item_parent == 0) {
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$condition = ['private' => [Item::PUBLIC, Item::UNLISTED], 'guid' => $a->argv[1], 'uid' => 0];
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$item = Item::selectFirstForUser(local_user(), $fields, $condition);
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if (DBA::isResult($item)) {
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$item_id = $item['id'];
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$item_parent = $item['parent'];
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$item_parent_uri = $item['parent-uri'];
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}
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}
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}
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}
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if (empty($item)) {
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throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
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}
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if (!DI::pConfig()->get(local_user(), 'system', 'detailed_notif')) {
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DBA::update('notify', ['seen' => true], ['parent' => $item['parent'], 'uid' => local_user()]);
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}
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// We are displaying an "alternate" link if that post was public. See issue 2864
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$is_public = Item::exists(['id' => $item_id, 'private' => [Item::PUBLIC, Item::UNLISTED]]);
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if ($is_public) {
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// For the atom feed the nickname doesn't matter at all, we only need the item id.
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$alternate = DI::baseUrl().'/display/feed-item/'.$item_id.'.atom';
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$conversation = DI::baseUrl().'/display/feed-item/'.$item_parent.'/conversation.atom';
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} else {
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$alternate = '';
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$conversation = '';
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}
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DI::page()['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
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['$alternate' => $alternate,
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'$conversation' => $conversation]);
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$is_remote_contact = false;
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$item_uid = local_user();
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$parent = null;
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if (!empty($item_parent_uri)) {
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$parent = Item::selectFirst(['uid'], ['uri' => $item_parent_uri, 'wall' => true]);
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}
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if (DBA::isResult($parent)) {
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$a->profile['uid'] = ($a->profile['uid'] ?? 0) ?: $parent['uid'];
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$is_remote_contact = Session::getRemoteContactID($a->profile['uid']);
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if ($is_remote_contact) {
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$item_uid = $parent['uid'];
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}
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} else {
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$a->profile = ['uid' => intval($item['uid'])];
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}
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$page_contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $a->profile['uid']]);
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if (DBA::isResult($page_contact)) {
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$a->page_contact = $page_contact;
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}
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$is_owner = (local_user() && (in_array($a->profile['uid'], [local_user(), 0])) ? true : false);
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if (!empty($a->profile['hidewall']) && !$is_owner && !$is_remote_contact) {
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throw new HTTPException\ForbiddenException(DI::l10n()->t('Access to this profile has been restricted.'));
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}
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// We need the editor here to be able to reshare an item.
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if ($is_owner && !$update) {
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$x = [
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'is_owner' => true,
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'allow_location' => $a->user['allow_location'],
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'default_location' => $a->user['default-location'],
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'nickname' => $a->user['nickname'],
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'lockstate' => (is_array($a->user) && (strlen($a->user['allow_cid']) || strlen($a->user['allow_gid']) || strlen($a->user['deny_cid']) || strlen($a->user['deny_gid'])) ? 'lock' : 'unlock'),
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'acl' => ACL::getFullSelectorHTML(DI::page(), $a->user, true),
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'bang' => '',
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'visitor' => 'block',
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'profile_uid' => local_user(),
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];
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$o .= status_editor($a, $x, 0, true);
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}
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$sql_extra = Item::getPermissionsSQLByUserId($a->profile['uid']);
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if (local_user() && (local_user() == $a->profile['uid'])) {
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$condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
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$unseen = Item::exists($condition);
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} else {
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$unseen = false;
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}
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if ($update && !$unseen && !$force) {
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return '';
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}
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$condition = ["`id` = ? AND `item`.`uid` IN (0, ?) " . $sql_extra, $item_id, $item_uid];
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$fields = ['parent-uri', 'body', 'title', 'author-name', 'author-avatar', 'plink', 'author-id', 'owner-id', 'contact-id'];
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$item = Item::selectFirstForUser($a->profile['uid'], $fields, $condition);
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if (!DBA::isResult($item)) {
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throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
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}
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$item['uri'] = $item['parent-uri'];
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if ($unseen) {
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$condition = ['parent-uri' => $item_parent_uri, 'uid' => local_user(), 'unseen' => true];
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Item::update(['unseen' => false], $condition);
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}
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if (!$update) {
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$o .= "<script> var netargs = '?item_id=" . $item_id . "'; </script>";
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}
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$o .= conversation($a, [$item], 'display', $update_uid, false, 'commented', $item_uid);
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// Preparing the meta header
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$description = trim(HTML::toPlaintext(BBCode::convert($item["body"], false), 0, true));
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$title = trim(HTML::toPlaintext(BBCode::convert($item["title"], false), 0, true));
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$author_name = $item["author-name"];
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$image = DI::baseUrl()->remove($item["author-avatar"]);
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if ($title == "") {
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$title = $author_name;
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}
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// Limit the description to 160 characters
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if (strlen($description) > 160) {
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$description = substr($description, 0, 157) . '...';
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}
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$description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
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$title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
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$author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
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$page = DI::page();
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if (DBA::exists('contact', ['unsearchable' => true, 'id' => [$item['contact-id'], $item['author-id'], $item['owner-id']]])) {
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$page['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
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}
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DI::page()['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
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$page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
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$page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
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$page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
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// Schema.org microdata
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$page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
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$page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
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$page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
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$page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
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// Twitter cards
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$page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
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$page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
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$page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
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$page['htmlhead'] .= '<meta name="twitter:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
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$page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
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// Dublin Core
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$page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
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$page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
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// Open Graph
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$page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
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$page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
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$page['htmlhead'] .= '<meta property="og:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
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$page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
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$page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
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$page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
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// article:tag
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return $o;
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}
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function displayShowFeed($item_id, $conversation)
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{
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$xml = DFRN::itemFeed($item_id, $conversation);
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if ($xml == '') {
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throw new HTTPException\InternalServerErrorException(DI::l10n()->t('The feed for this item is unavailable.'));
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}
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header("Content-type: application/atom+xml");
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echo $xml;
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exit();
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}
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