1 files changed, 98 insertions, 0 deletions
diff --git a/program/steps/utils/modcss.inc b/program/steps/utils/modcss.inc
new file mode 100644
index 000000000..2224901ac
--- /dev/null
+++ b/program/steps/utils/modcss.inc
@@ -0,0 +1,98 @@
+<?php
+
+/*
+ +-----------------------------------------------------------------------+
+ | program/steps/utils/modcss.inc                                        |
+ |                                                                       |
+ | This file is part of the RoundCube Webmail client                     |
+ | Copyright (C) 2007-2010, RoundCube Dev. - Switzerland                 |
+ | Licensed under the GNU GPL                                            |
+ |                                                                       |
+ | PURPOSE:                                                              |
+ |   Modify CSS source from a URL                                        |
+ |                                                                       |
+ +-----------------------------------------------------------------------+
+ | Author: Thomas Bruederli <roundcube@gmail.com>                        |
+ +-----------------------------------------------------------------------+
+
+ $Id$
+
+*/
+
+$source = '';
+
+$url = preg_replace('![^a-z0-9:./\-_?$&=%]!i', '', $_GET['u']);
+if ($url === null) {
+    header('HTTP/1.1 403 Forbidden');
+    echo $error;
+    exit;
+}
+
+$a_uri = parse_url($url);
+$port  = $a_uri['port'] ? $a_uri['port'] : 80;
+$host  = $a_uri['host'];
+$path  = $a_uri['path'] . ($a_uri['query'] ? '?'.$a_uri['query'] : '');
+
+// don't allow any other connections than http(s)
+if (strtolower(substr($a_uri['scheme'], 0, 4)) != 'http') {
+    header('HTTP/1.1 403 Forbidden');
+    echo "Invalid URL";
+    exit;
+}
+
+// try to open socket connection
+if (!($fp = fsockopen($host, $port, $errno, $error, 15))) {
+    header('HTTP/1.1 500 Internal Server Error');
+    echo $error;
+    exit;
+}
+
+// set timeout for socket
+stream_set_timeout($fp, 30);
+
+// send request
+$out  = "GET $path HTTP/1.0\r\n";
+$out .= "Host: $host\r\n";
+$out .= "Connection: Close\r\n\r\n";
+fwrite($fp, $out);
+
+// read response
+$header = true;
+$headers = array();
+while (!feof($fp)) {
+    $line = trim(fgets($fp, 4048));
+
+    if ($header) {
+        if (preg_match('/^HTTP\/1\..\s+(\d+)/', $line, $regs)
+            && intval($regs[1]) != 200) {
+            break;
+        }
+        else if (empty($line)) {
+            $header = false;
+        }
+        else {
+            list($key, $value) = explode(': ', $line);
+            $headers[strtolower($key)] = $value;
+        }
+    }
+    else {
+        $source .= "$line\n";
+    }
+}
+fclose($fp);
+
+// check content-type header and mod styles
+$mimetype = strtolower($headers['content-type']);
+if (!empty($source) && in_array($mimetype, array('text/css','text/plain'))) {
+    header('Content-Type: text/css');
+    echo rcmail_mod_css_styles($source, preg_replace('/[^a-z0-9]/i', '', $_GET['c']));
+    exit;
+}
+else
+    $error = "Invalid response returned by server";
+
+header('HTTP/1.0 404 Not Found');
+echo $error;
+exit;
+
+?>