* minor fixes: simplied code, http status, cs

bin/modcss.php

@@ -24,46 +24,64 @@ require INSTALL_PATH . 'program/include/iniset.php';
 
 $RCMAIL = rcmail::get_instance();
 
-$source = "";
-if (!empty($RCMAIL->user->ID) && ($url = preg_replace('/[^a-z0-9.-_\?\$&=%]/i', '', $_GET['u'])))
-{
-	$a_uri = parse_url($url);
-	$port = $a_uri['port'] ? $a_uri['port'] : 80;
-	$host = $a_uri['host'];
-	$path = $a_uri['path'] . ($a_uri['query'] ? '?'.$a_uri['query'] : '');
+$source = '';
+$error  = 'Requires a valid user session and source url';
 
+if (empty($RCMAIL->user->ID)) {
+    header('HTTP/1.1 403 Forbidden');
+    echo $error;
+    exit;
+}
+
+$url = preg_replace('/[^a-z0-9.-_\?\$&=%]/i', '', $_GET['u']);
+if ($url === null) {
+    header('HTTP/1.1 403 Forbidden');
+    echo $error;
+    exit;
+}
 
-	if ($fp = fsockopen($host, $port, $errno, $errstr, 30))
-	{
-		$out = "GET $path HTTP/1.0\r\n";
-		$out .= "Host: $host\r\n";
-		$out .= "Connection: Close\r\n\r\n";
-		fwrite($fp, $out);
+$a_uri = parse_url($url);
+$port  = $a_uri['port'] ? $a_uri['port'] : 80;
+$host  = $a_uri['host'];
+$path  = $a_uri['path'] . ($a_uri['query'] ? '?'.$a_uri['query'] : '');
 
-		$header = true;
-		while (!feof($fp))
-		{
-			$line = trim(fgets($fp, 4048));
-			
-			if ($header && preg_match('/^HTTP\/1\..\s+(\d+)/', $line, $regs) && intval($regs[1]) != 200)
-				break;
-			else if (empty($line) && $header)
-				$header = false;
-			else if (!$header)
-				$source .= "$line\n";
-		}
-		fclose($fp);
-	 }
+if (!($fp = fsockopen($host, $port, $errno, $errstr, 30))) {
+    header('HTTP/1.1 500 Internal Server Error');
+    echo $error;
+    exit;
 }
 
-if (!empty($source))
-{
-	header("Content-Type: text/css");
-	echo rcmail_mod_css_styles($source, preg_replace('/[^a-z0-9]/i', '', $_GET['c']), $url);
+$out  = "GET $path HTTP/1.0\r\n";
+$out .= "Host: $host\r\n";
+$out .= "Connection: Close\r\n\r\n";
+fwrite($fp, $out);
+
+$header = true;
+while (!feof($fp)) {
+    $line = trim(fgets($fp, 4048));
+
+    if ($header
+        && preg_match('/^HTTP\/1\..\s+(\d+)/', $line, $regs)
+        && intval($regs[1]) != 200) {
+	break;
+    } else if (empty($line) && $header) {
+        $header = false;
+    } else if (!$header) {
+        $source .= "$line\n";
+    }
+    fclose($fp);
 }
-else {
-	header("HTTP/1.0 404 Not Found");
-	echo "Requires a valid user session and source url";
+
+if (!empty($source)) {
+    header('Content-Type: text/css');
+    echo rcmail_mod_css_styles(
+        $source,
+        preg_replace('/[^a-z0-9]/i', '', $_GET['c']),
+        $url
+    );
+    exit;
 }
 
-?>
+header('HTTP/1.0 404 Not Found');
+echo $error;
+exit;