engelsystem/includes/pages/user_atom.php

78 lines
2.2 KiB
PHP

<?php
use Engelsystem\Database\DB;
use Engelsystem\Http\Request;
/**
* Publically available page to feed the news to feed readers
*/
function user_atom()
{
global $user;
$request = request();
if (!$request->has('key') || !preg_match('/^[\da-f]{32}$/', $request->input('key'))) {
engelsystem_error('Missing key.');
}
$key = $request->input('key');
$user = User_by_api_key($key);
if ($user == null) {
engelsystem_error('Key invalid.');
}
if (!in_array('atom', privileges_for_user($user['UID']))) {
engelsystem_error('No privilege for atom.');
}
$news = DB::select('
SELECT *
FROM `News`
' . (!$request->has('meetings') ? '' : 'WHERE `Treffen` = 1 ') . '
ORDER BY `ID`
DESC LIMIT ' . (int)config('display_news')
);
$output = make_atom_entries_from_news($news);
header('Content-Type: application/atom+xml; charset=utf-8');
header('Content-Length: ' . strlen($output));
raw_output($output);
}
/**
* @param array[] $news_entries
* @return string
*/
function make_atom_entries_from_news($news_entries)
{
$request = Request::getInstance();
$html = '<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<title>Engelsystem</title>
<id>' . $request->getHttpHost()
. htmlspecialchars(preg_replace(
'#[&?]key=[a-f\d]{32}#',
'',
$request->getRequestUri()
))
. '</id>
<updated>' . date('Y-m-d\TH:i:sP', $news_entries[0]['Datum']) . '</updated>' . "\n";
foreach ($news_entries as $news_entry) {
$html .= make_atom_entry_from_news($news_entry);
}
$html .= '</feed>';
return $html;
}
function make_atom_entry_from_news($news_entry)
{
return '
<entry>
<title>' . htmlspecialchars($news_entry['Betreff']) . '</title>
<link href="' . page_link_to('news_comments', ['nid' => $news_entry['ID']]) . '"/>
<id>' . preg_replace('#^https?://#', '', page_link_to('news_comments', ['nid' => $news_entry['ID']])) . '</id>
<updated>' . date('Y-m-d\TH:i:sP', $news_entry['Datum']) . '</updated>
<summary>' . htmlspecialchars($news_entry['Text']) . '</summary>
</entry>' . "\n";
}