427 lines
14 KiB
PHP
427 lines
14 KiB
PHP
<?php
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/**
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* @file mod/display.php
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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\Config;
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use Friendica\Core\L10n;
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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\System;
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use Friendica\Database\DBA;
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use Friendica\Model\Contact;
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use Friendica\Model\Group;
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use Friendica\Model\Item;
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use Friendica\Model\Profile;
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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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use Friendica\Module\Objects;
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function display_init(App $a)
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{
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if (ActivityPub::isRequest()) {
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Objects::rawContent();
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}
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if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
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return;
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}
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$nick = (($a->argc > 1) ? $a->argv[1] : '');
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if ($a->argc == 3) {
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if (substr($a->argv[2], -5) == '.atom') {
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$item_id = substr($a->argv[2], 0, -5);
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displayShowFeed($item_id, false);
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}
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}
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if ($a->argc == 4) {
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if ($a->argv[3] == 'conversation.atom') {
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$item_id = $a->argv[2];
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displayShowFeed($item_id, true);
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}
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}
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$item = null;
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$item_user = local_user();
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$fields = ['id', 'parent', 'author-id', 'body', 'uid', 'guid'];
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// If there is only one parameter, then check if this parameter could be a guid
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if ($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 = $a->user["nickname"];
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}
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// Is this item private but could be visible to the remove visitor?
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} elseif (remote_user()) {
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$item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1]);
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if (DBA::isResult($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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$item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => [0, 2], 'uid' => 0]);
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}
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} elseif (($a->argc == 3) && ($nick == 'feed-item')) {
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$item = Item::selectFirst($fields, ['id' => $a->argv[2], 'private' => [0, 2], 'uid' => 0]);
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}
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if (!DBA::isResult($item)) {
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System::httpExit(404);
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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["id"] != $item["parent"]) {
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$item = Item::selectFirstForUser($item_user, $fields, ['id' => $item["parent"]]);
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}
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$profiledata = display_fetchauthor($a, $item);
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if (strstr(Strings::normaliseLink($profiledata["url"]), Strings::normaliseLink(System::baseUrl()))) {
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$nickname = str_replace(Strings::normaliseLink(System::baseUrl())."/profile/", "", Strings::normaliseLink($profiledata["url"]));
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if (($nickname != $a->user["nickname"])) {
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$profile = DBA::fetchFirst("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
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INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
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WHERE `user`.`nickname` = ? AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
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$nickname
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);
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if (DBA::isResult($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, 0, $profiledata);
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}
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function display_fetchauthor($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'] = $author['network'];
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// Check for a repeated message
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$skip = false;
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$body = trim($item["body"]);
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// Skip if it isn't a pure repeated messages
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// Does it start with a share?
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if (!$skip && strpos($body, "[share") > 0) {
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$skip = true;
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}
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// Does it end with a share?
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if (!$skip && (strlen($body) > (strrpos($body, "[/share]") + 8))) {
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$skip = true;
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}
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if (!$skip) {
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$attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
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// Skip if there is no shared message in there
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if ($body == $attributes) {
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$skip = true;
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}
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}
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if (!$skip) {
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preg_match("/author='(.*?)'/ism", $attributes, $matches);
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if (!empty($matches[1])) {
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$profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
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}
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preg_match('/author="(.*?)"/ism', $attributes, $matches);
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if (!empty($matches[1])) {
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$profiledata["name"] = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
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}
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preg_match("/profile='(.*?)'/ism", $attributes, $matches);
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if (!empty($matches[1])) {
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$profiledata["url"] = $matches[1];
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}
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preg_match('/profile="(.*?)"/ism', $attributes, $matches);
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if (!empty($matches[1])) {
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$profiledata["url"] = $matches[1];
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}
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preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
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if (!empty($matches[1])) {
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$profiledata["photo"] = $matches[1];
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}
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preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
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if (!empty($matches[1])) {
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$profiledata["photo"] = $matches[1];
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}
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$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::getDetailsByURL($profiledata["url"], local_user(), $profiledata);
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$profiledata["photo"] = System::removedBaseUrl($profiledata["photo"]);
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if (local_user()) {
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if (in_array($profiledata["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
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$profiledata["remoteconnect"] = System::baseUrl()."/follow?url=".urlencode($profiledata["url"]);
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}
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} elseif ($profiledata["network"] == Protocol::DFRN) {
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$connect = str_replace("/profile/", "/dfrn_request/", $profiledata["url"]);
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$profiledata["remoteconnect"] = $connect;
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}
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return($profiledata);
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}
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function display_content(App $a, $update = false, $update_uid = 0)
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{
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if (Config::get('system','block_public') && !local_user() && !remote_user()) {
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notice(L10n::t('Public access denied.') . EOL);
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return;
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}
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$o = '';
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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']), 'profile_uid' => intval($item['uid'])];
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} else {
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$a->profile = ['uid' => intval($update_uid), 'profile_uid' => intval($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 = $item['parent-uri'];
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}
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} elseif (remote_user()) {
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$item = Item::selectFirst($fields, ['guid' => $a->argv[1], 'private' => 1]);
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if (DBA::isResult($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' => [0, 2], '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 = $item['parent-uri'];
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}
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}
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}
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}
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if (!$item_id) {
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System::httpExit(404);
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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' => $item_id, 'private' => [0, 2]]);
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if ($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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$alternate = System::baseUrl().'/display/feed-item/'.$item_id.'.atom';
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$conversation = System::baseUrl().'/display/feed-item/'.$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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$a->page['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
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['$alternate' => $alternate,
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'$conversation' => $conversation]);
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$groups = [];
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$remote_cid = null;
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$is_remote_contact = false;
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$item_uid = local_user();
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$parent = Item::selectFirst(['uid'], ['uri' => $item_parent_uri, 'wall' => true]);
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if (DBA::isResult($parent)) {
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$a->profile['uid'] = defaults($a->profile, 'uid', $parent['uid']);
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$a->profile['profile_uid'] = defaults($a->profile, 'profile_uid', $parent['uid']);
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$is_remote_contact = Contact::isFollower(remote_user(), $a->profile['profile_uid']);
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}
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if ($is_remote_contact) {
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$cdata = Contact::getPublicAndUserContacID(remote_user(), $a->profile['profile_uid']);
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if (!empty($cdata['user'])) {
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$groups = Group::getIdsByContactId($cdata['user']);
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$remote_cid = $cdata['user'];
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$item_uid = $parent['uid'];
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}
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}
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$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($a->profile['profile_uid'], [local_user(), 0])) ? true : false);
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if (!empty($a->profile['hidewall']) && !$is_owner && !$is_remote_contact) {
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notice(L10n::t('Access to this profile has been restricted.') . EOL);
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return;
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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 ($is_owner) {
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$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($a->user, true),
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'bang' => '',
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'visitor' => 'block',
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'profile_uid' => local_user(),
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];
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$o .= status_editor($a, $x, 0, true);
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}
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$sql_extra = Item::getPermissionsSQLByUserId($a->profile['profile_uid'], $is_remote_contact, $groups, $remote_cid);
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if (local_user() && (local_user() == $a->profile['profile_uid'])) {
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$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) {
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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'];
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$item = Item::selectFirstForUser(local_user(), $fields, $condition);
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if (!DBA::isResult($item)) {
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System::httpExit(404);
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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 = '?f=&item_id=" . $item_id . "'; </script>";
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}
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$o .= conversation($a, [$item], new Pager($a->query_string), '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 = $a->removeBaseURL($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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//<meta name="keywords" content="">
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$a->page['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
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$a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
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$a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
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$a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
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// Schema.org microdata
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$a->page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
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$a->page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
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$a->page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
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$a->page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
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// Twitter cards
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$a->page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
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$a->page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
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$a->page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
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$a->page['htmlhead'] .= '<meta name="twitter:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
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$a->page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
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// Dublin Core
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$a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
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$a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
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// Open Graph
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$a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
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$a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
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$a->page['htmlhead'] .= '<meta property="og:image" content="'.System::baseUrl().'/'.$image.'" />'."\n";
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$a->page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
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$a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
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$a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$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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System::httpExit(500);
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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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