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<?php
require_once './global/settings.php';
// Second version of redirector that doesn't redirect to arbitrary URLS!
$mirror = intval($_GET['mirror']);
$type = $_GET['type'];
$file = $_GET['file'];
if ($mirror <= 0) {
echo "Invalid mirror specification.";
exit(1);
}
if ($type != 'f' && $type != 'h') {
echo "Invalid mirror type.";
exit(1);
}
if ($file != '' && !preg_match('#^[a-zA-Z0-9/\._-]+$#', $file)) {
echo "Invalid character in filename (" . htmlentities($file) . ").";
exit(1);
}
// Set a cookie with the last mirror used
setcookie('dlmirror', $mirror, time()+60*60*24*300,'/');
setcookie('dlmirrortype', $type, time()+60*60*24*300,'/');
$db = @pg_pconnect($_SETTINGS['db_portal']);
if (!$db) {
echo "Unable to connect to the database.";
exit(1);
}
$res = pg_query_params($db, "SELECT 'ftp'||CASE WHEN mirror_index = 0 THEN ''::text ELSE mirror_index::text END ||" .
" '.' || country_code || '.postgresql.org' AS hostname, host_port AS port, host_path AS path, " .
"alternate_at_root FROM mirrors WHERE id=$1 " . ($type == 'h'?"AND alternate_protocol ":"") .
" AND mirror_type='ftp' AND mirror_active AND NOT mirror_private AND mirror_dns AND mirror_last_rsync > (now() - '48 hrs'::interval)",
array($mirror));
if (pg_num_rows($res) != 1) {
echo "Mirror not found.";
exit(1);
}
$rs = pg_fetch_row($res, 0);
$host = $rs[0];
$port = $rs[1];
$path = $rs[2];
$altroot = $rs[3];
if ($file[0] != '/') {
$file = '/' . $file;
}
if ($path[0] != '/') {
$path = '/' . $path;
}
if ($path[strlen($path)-1] == '/') {
$path = substr($path, 0, strlen($path)-1);
}
if ($type == 'h') {
// Construct http url
if ($altroot == 't') {
$url = "http://" . $host . $file;
}
else {
$url = "http://" . $host . $path . $file;
}
}
else {
// Construct ftp url
if ($rs[1] > 0 && $rs[1] != 21) {
echo "Port changes not currently supported";
}
else {
$url = "ftp://" . $host . $path . $file;
}
}
$ip = $_SERVER['REMOTE_ADDR'];
$ip = preg_split('/[.]+/', $ip);
$ipnumber = (double) ($ip[0] * 16777216) + ($ip[1] * 65536) + ($ip[2] * 256) + ($ip[3]);
@pg_query_params($db, "INSERT INTO clickthrus (scheme, host, path, country) VALUES ($1,$2, $3, (SELECT countrycode FROM iptocountry WHERE $4 BETWEEN startip AND endip LIMIT 1))",
array(
$type=='h'?'http':'ftp',
$host,
($type=='h'&&$altroot=='t')?$file:($path . $file),
$ipnumber
));
header("Location: " . $url);
exit;
?>
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