function add_feed($url)
{
global $user_id;
$url = fetch_feedurl(trim($url));
if ($url === -7) {
return -7;
}
$feedname = fetch_feedtitle($url);
if ($feedname == '') {
$feedname = htmlspecialchars($url);
}
mysql_query("INSERT IGNORE INTO `feeds` (`name`, `url`, `lastupdate`) VALUES ('" . mysql_real_escape_string($feedname) . "', '" . mysql_real_escape_string($url) . "', " . time() . ")");
echo mysql_error();
mysql_query("INSERT IGNORE INTO `feeds_subscription` (`feedid`, `userid`) VALUES ((SELECT `id` FROM `feeds` WHERE `url` = '" . mysql_real_escape_string($url) . "'), '" . $user_id . "')");
echo mysql_error();
}
function fetch_feedurl($url)
{
$uri = parse_url($url);
$ip = gethostbyname($uri['host']);
if ($ip == false or $ip == '62.75.159.223') {
$nsl = shell_exec('nslookup ' . escapeshellarg($uri['host']));
if (strpos($nsl, 'NXDOMAIN') !== false) {
return false;
}
}
if ($uri['scheme'] == 'https') {
$fp = @fsockopen('ssl://' . $ip, intval($uri['port']) > 0 ? $uri['port'] : 443, $err, $errn, 20);
} else {
$fp = @fsockopen($ip, intval($uri['port']) > 0 ? $uri['port'] : 80, $err, $errn, 20);
}
if (!$fp) {
return -7;
} else {
$path = "";
if (isset($uri['path']) && !empty($uri['path'])) {
$path .= $uri['path'];
}
if (isset($uri['query']) && !empty($uri['query'])) {
$path .= "?" . $uri['query'];
}
$addheader = "";
if (isset($uri['user']) && !empty($uri['user']) && isset($uri['pass']) && !empty($uri['pass'])) {
$addheader .= "Authorization: Basic " . base64_encode($uri['user'] . ':' . $uri['pass']) . "\r\n";
}
if ($path == "") {
$path = "/";
}
fwrite($fp, "GET {$path} HTTP/1.0\r\nHost: " . $uri['host'] . "\r\nUser-Agent: geeksfactory-reader/1.0{$addheader}\r\n\r\n");
stream_set_timeout($fp, 10);
$res = "";
while (!feof($fp)) {
$new = fread($fp, 128);
$res .= $new;
if (strpos($new, '</head>') !== false) {
break;
}
if (strpos($new, '<feed') !== false or strpos($new, '<channel') !== false) {
break;
}
}
fclose($fp);
if (strpos($res, '<feed') !== false or strpos($res, '<channel') !== false) {
return $url;
}
$locsearch = preg_match('#Location: ([^ \\r\\n]*)#i', substr($res, 0, strpos($res, "\r\n\r\n")), $treffer);
if ($locsearch > 0) {
return fetch_feedurl($treffer[1]);
}
if (substr($res, 0, 10) == 'HTTP/1.1 4' || substr($res, 0, 10) == 'HTTP/1.1 3') {
return false;
}
$htmlsearch = preg_match('#<link(([^>]*type=["\']application/(rss|atom)\\+xml["\'][^>]*href=["\']([^"\']+)["\'][^>]*)|(<link[^>]*href=["\']([^"\']+)["\'][^>]*type=["\']application/(rss|atom)\\+xml["\'][^>]*))>#i', $res, $treffer);
if ($htmlsearch > 0) {
return urljoin($url, htmlspecialchars_decode($treffer[4]));
}
}
return $url;
}
