| commit | author | age | ||
| 97bd2c | 1 | <?php |
| T | 2 | |
| 3 | /* | |
| 4 | +-----------------------------------------------------------------------+ | |
| 677e1f | 5 | | program/steps/utils/modcss.inc | |
| 97bd2c | 6 | | | |
| e019f2 | 7 | | This file is part of the Roundcube Webmail client | |
| 3e0e91 | 8 | | Copyright (C) 2007-2011, The Roundcube Dev Team | |
| 97bd2c | 9 | | Licensed under the GNU GPL | |
| T | 10 | | | |
| 11 | | PURPOSE: | | |
| 12 | | Modify CSS source from a URL | | |
| 13 | | | | |
| 14 | +-----------------------------------------------------------------------+ | |
| 15 | | Author: Thomas Bruederli <roundcube@gmail.com> | | |
| 16 | +-----------------------------------------------------------------------+ | |
| 17 | ||
| 155bbb | 18 | $Id$ |
| 97bd2c | 19 | |
| T | 20 | */ |
| 21 | ||
| 12bc8b | 22 | $source = ''; |
| 97bd2c | 23 | |
| 3e0e91 | 24 | $url = preg_replace('![^a-z0-9.-]!i', '', $_GET['_u']); |
| T | 25 | if ($url === null || !($realurl = $_SESSION['modcssurls'][$url])) { |
| 12bc8b | 26 | header('HTTP/1.1 403 Forbidden'); |
| 3e0e91 | 27 | echo "Unauthorized request"; |
| 12bc8b | 28 | exit; |
| 1608f4 | 29 | } |
| 97bd2c | 30 | |
| 3e0e91 | 31 | $a_uri = parse_url($realurl); |
| 12bc8b | 32 | $port = $a_uri['port'] ? $a_uri['port'] : 80; |
| T | 33 | $host = $a_uri['host']; |
| 34 | $path = $a_uri['path'] . ($a_uri['query'] ? '?'.$a_uri['query'] : ''); | |
| 35 | ||
| db5221 | 36 | // don't allow any other connections than http(s) |
| T | 37 | if (strtolower(substr($a_uri['scheme'], 0, 4)) != 'http') { |
| 38 | header('HTTP/1.1 403 Forbidden'); | |
| 39 | echo "Invalid URL"; | |
| 40 | exit; | |
| 41 | } | |
| 42 | ||
| 43 | // try to open socket connection | |
| 44 | if (!($fp = fsockopen($host, $port, $errno, $error, 15))) { | |
| 12bc8b | 45 | header('HTTP/1.1 500 Internal Server Error'); |
| T | 46 | echo $error; |
| 47 | exit; | |
| 48 | } | |
| 49 | ||
| db5221 | 50 | // set timeout for socket |
| T | 51 | stream_set_timeout($fp, 30); |
| 52 | ||
| 53 | // send request | |
| 12bc8b | 54 | $out = "GET $path HTTP/1.0\r\n"; |
| T | 55 | $out .= "Host: $host\r\n"; |
| 56 | $out .= "Connection: Close\r\n\r\n"; | |
| 57 | fwrite($fp, $out); | |
| 58 | ||
| db5221 | 59 | // read response |
| 12bc8b | 60 | $header = true; |
| db5221 | 61 | $headers = array(); |
| 12bc8b | 62 | while (!feof($fp)) { |
| T | 63 | $line = trim(fgets($fp, 4048)); |
| 64 | ||
| db5221 | 65 | if ($header) { |
| T | 66 | if (preg_match('/^HTTP\/1\..\s+(\d+)/', $line, $regs) |
| 67 | && intval($regs[1]) != 200) { | |
| 68 | break; | |
| 69 | } | |
| 70 | else if (empty($line)) { | |
| 71 | $header = false; | |
| 72 | } | |
| 73 | else { | |
| 74 | list($key, $value) = explode(': ', $line); | |
| 75 | $headers[strtolower($key)] = $value; | |
| 76 | } | |
| 77 | } | |
| 78 | else { | |
| 12bc8b | 79 | $source .= "$line\n"; |
| T | 80 | } |
| 81 | } | |
| f9160e | 82 | fclose($fp); |
| 12bc8b | 83 | |
| db5221 | 84 | // check content-type header and mod styles |
| T | 85 | $mimetype = strtolower($headers['content-type']); |
| 86 | if (!empty($source) && in_array($mimetype, array('text/css','text/plain'))) { | |
| 12bc8b | 87 | header('Content-Type: text/css'); |
| 3e0e91 | 88 | echo rcmail_mod_css_styles($source, preg_replace('/[^a-z0-9]/i', '', $_GET['_c'])); |
| 12bc8b | 89 | exit; |
| T | 90 | } |
| db5221 | 91 | else |
| T | 92 | $error = "Invalid response returned by server"; |
| 12bc8b | 93 | |
| T | 94 | header('HTTP/1.0 404 Not Found'); |
| 95 | echo $error; | |
| 96 | exit; | |
| 677e1f | 97 | |
| b25dfd | 98 | |
