1182 lines
44 KiB
PHP
1182 lines
44 KiB
PHP
<?php
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/*
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+-----------------+------------------------------------------------------------+
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| Script | PHProxy |
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| Author | Abdullah Arif |
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| Last Modified | 5:27 PM 1/20/2007 |
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+-----------------+------------------------------------------------------------+
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| This program is free software; you can redistribute it and/or |
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| modify it under the terms of the GNU General Public License |
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| as published by the Free Software Foundation; either version 2 |
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| of the License, or (at your option) any later version. |
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| |
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| This program is distributed in the hope that it will be useful, |
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| but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| GNU General Public License for more details. |
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| |
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| You should have received a copy of the GNU General Public License |
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| along with this program; if not, write to the Free Software |
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| Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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+------------------------------------------------------------------------------+
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*/
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error_reporting(E_ALL);
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//
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// CONFIGURABLE OPTIONS
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//
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$_config = array
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(
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'url_var_name' => 'q',
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'flags_var_name' => 'hl',
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'get_form_name' => '____pgfa',
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'basic_auth_var_name' => '____pbavn',
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'max_file_size' => -1,
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'allow_hotlinking' => 1,
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'upon_hotlink' => 1,
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'compress_output' => 0
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);
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$_flags = array
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(
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'include_form' => 1,
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'remove_scripts' => 1,
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'accept_cookies' => 1,
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'show_images' => 1,
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'show_referer' => 1,
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'rotate13' => 0,
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'base64_encode' => 1,
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'strip_meta' => 1,
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'strip_title' => 0,
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'session_cookies' => 1
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);
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$_frozen_flags = array
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(
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'include_form' => 0,
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'remove_scripts' => 0,
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'accept_cookies' => 0,
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'show_images' => 0,
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'show_referer' => 0,
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'rotate13' => 0,
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'base64_encode' => 0,
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'strip_meta' => 0,
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'strip_title' => 0,
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'session_cookies' => 0
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);
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$_labels = array
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(
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'include_form' => array('Include Form', 'Include mini URL-form on every page'),
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'remove_scripts' => array('Remove Scripts', 'Remove client-side scripting (i.e JavaScript)'),
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'accept_cookies' => array('Accept Cookies', 'Allow cookies to be stored'),
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'show_images' => array('Show Images', 'Show images on browsed pages'),
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'show_referer' => array('Show Referer', 'Show actual referring Website'),
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'rotate13' => array('Rotate13', 'Use ROT13 encoding on the address'),
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'base64_encode' => array('Base64', 'Use base64 encodng on the address'),
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'strip_meta' => array('Strip Meta', 'Strip meta information tags from pages'),
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'strip_title' => array('Strip Title', 'Strip page title'),
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'session_cookies' => array('Session Cookies', 'Store cookies for this session only')
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);
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$_hosts = array
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(
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'#^127\.|192\.168\.|10\.|172\.(1[6-9]|2[0-9]|3[01])\.|localhost#i'
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);
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$_hotlink_domains = array();
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$_insert = array();
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//
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// END CONFIGURABLE OPTIONS. The ride for you ends here. Close the file.
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//
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$_iflags = '';
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$_system = array
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(
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'ssl' => extension_loaded('openssl') && version_compare(PHP_VERSION, '4.3.0', '>='),
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'uploads' => ini_get('file_uploads'),
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'gzip' => extension_loaded('zlib') && !ini_get('zlib.output_compression'),
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'stripslashes' => get_magic_quotes_gpc()
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);
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$_proxify = array('text/html' => 1, 'application/xml+xhtml' => 1, 'application/xhtml+xml' => 1, 'text/css' => 1);
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$_version = '0.5b2';
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$_http_host = isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : (isset($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] : 'localhost');
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$_script_url = 'http' . ((isset($_ENV['HTTPS']) && $_ENV['HTTPS'] == 'on') || $_SERVER['SERVER_PORT'] == 443 ? 's' : '') . '://' . $_http_host . ($_SERVER['SERVER_PORT'] != 80 && $_SERVER['SERVER_PORT'] != 443 ? ':' . $_SERVER['SERVER_PORT'] : '') . $_SERVER['PHP_SELF'];
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$_script_base = substr($_script_url, 0, strrpos($_script_url, '/')+1);
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$_url = '';
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$_url_parts = array();
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$_base = array();
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$_socket = null;
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$_request_method = $_SERVER['REQUEST_METHOD'];
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$_request_headers = '';
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$_cookie = '';
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$_post_body = '';
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$_response_headers = array();
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$_response_keys = array();
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$_http_version = '';
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$_response_code = 0;
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$_content_type = 'text/html';
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$_content_length = false;
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$_content_disp = '';
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$_set_cookie = array();
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$_retry = false;
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$_quit = false;
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$_basic_auth_header = '';
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$_basic_auth_realm = '';
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$_auth_creds = array();
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$_response_body = '';
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//
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// FUNCTION DECLARATIONS
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//
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function show_report($data)
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{
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include $data['which'] . '.inc.php';
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exit(0);
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}
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function add_cookie($name, $value, $expires = 0)
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{
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return rawurlencode(rawurlencode($name)) . '=' . rawurlencode(rawurlencode($value)) . (empty($expires) ? '' : '; expires=' . gmdate('D, d-M-Y H:i:s \G\M\T', $expires)) . '; path=/; domain=.' . $GLOBALS['_http_host'];
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}
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function set_post_vars($array, $parent_key = null)
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{
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$temp = array();
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foreach ($array as $key => $value)
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{
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$key = isset($parent_key) ? sprintf('%s[%s]', $parent_key, urlencode($key)) : urlencode($key);
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if (is_array($value))
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{
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$temp = array_merge($temp, set_post_vars($value, $key));
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}
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else
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{
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$temp[$key] = urlencode($value);
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}
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}
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return $temp;
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}
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function set_post_files($array, $parent_key = null)
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{
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$temp = array();
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foreach ($array as $key => $value)
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{
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$key = isset($parent_key) ? sprintf('%s[%s]', $parent_key, urlencode($key)) : urlencode($key);
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if (is_array($value))
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{
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$temp = array_merge_recursive($temp, set_post_files($value, $key));
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}
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else if (preg_match('#^([^\[\]]+)\[(name|type|tmp_name)\]#', $key, $m))
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{
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$temp[str_replace($m[0], $m[1], $key)][$m[2]] = $value;
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}
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}
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return $temp;
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}
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function url_parse($url, & $container)
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{
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$temp = @parse_url($url);
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if (!empty($temp))
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{
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$temp['port_ext'] = '';
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$temp['base'] = $temp['scheme'] . '://' . $temp['host'];
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if (isset($temp['port']))
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{
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$temp['base'] .= $temp['port_ext'] = ':' . $temp['port'];
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}
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else
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{
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$temp['port'] = $temp['scheme'] === 'https' ? 443 : 80;
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}
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$temp['path'] = isset($temp['path']) ? $temp['path'] : '/';
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$path = array();
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$temp['path'] = explode('/', $temp['path']);
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foreach ($temp['path'] as $dir)
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{
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if ($dir === '..')
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{
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array_pop($path);
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}
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else if ($dir !== '.')
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{
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for ($dir = rawurldecode($dir), $new_dir = '', $i = 0, $count_i = strlen($dir); $i < $count_i; $new_dir .= strspn($dir{$i}, 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789$-_.+!*\'(),?:@&;=') ? $dir{$i} : rawurlencode($dir{$i}), ++$i);
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$path[] = $new_dir;
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}
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}
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$temp['path'] = str_replace('/%7E', '/~', '/' . ltrim(implode('/', $path), '/'));
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$temp['file'] = substr($temp['path'], strrpos($temp['path'], '/')+1);
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$temp['dir'] = substr($temp['path'], 0, strrpos($temp['path'], '/'));
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$temp['base'] .= $temp['dir'];
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$temp['prev_dir'] = substr_count($temp['path'], '/') > 1 ? substr($temp['base'], 0, strrpos($temp['base'], '/')+1) : $temp['base'] . '/';
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$container = $temp;
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return true;
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}
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return false;
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}
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function complete_url($url, $proxify = true)
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{
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$url = trim($url);
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if ($url === '')
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{
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return '';
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}
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$hash_pos = strrpos($url, '#');
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$fragment = $hash_pos !== false ? '#' . substr($url, $hash_pos) : '';
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$sep_pos = strpos($url, '://');
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if ($sep_pos === false || $sep_pos > 5)
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{
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switch ($url{0})
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{
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case '/':
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$url = substr($url, 0, 2) === '//' ? $GLOBALS['_base']['scheme'] . ':' . $url : $GLOBALS['_base']['scheme'] . '://' . $GLOBALS['_base']['host'] . $GLOBALS['_base']['port_ext'] . $url;
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break;
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case '?':
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$url = $GLOBALS['_base']['base'] . '/' . $GLOBALS['_base']['file'] . $url;
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break;
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case '#':
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$proxify = false;
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break;
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case 'm':
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if (substr($url, 0, 7) == 'mailto:')
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{
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$proxify = false;
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break;
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}
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default:
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$url = $GLOBALS['_base']['base'] . '/' . $url;
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}
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}
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return $proxify ? "{$GLOBALS['_script_url']}?{$GLOBALS['_config']['url_var_name']}=" . encode_url($url) . $fragment : $url;
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}
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function proxify_inline_css($css)
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{
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preg_match_all('#url\s*\(\s*(([^)]*(\\\))*[^)]*)(\)|$)?#i', $css, $matches, PREG_SET_ORDER);
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for ($i = 0, $count = count($matches); $i < $count; ++$i)
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{
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$css = str_replace($matches[$i][0], 'url(' . proxify_css_url($matches[$i][1]) . ')', $css);
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}
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return $css;
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}
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function proxify_css($css)
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{
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$css = proxify_inline_css($css);
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preg_match_all("#@import\s*(?:\"([^\">]*)\"?|'([^'>]*)'?)([^;]*)(;|$)#i", $css, $matches, PREG_SET_ORDER);
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for ($i = 0, $count = count($matches); $i < $count; ++$i)
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{
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$delim = '"';
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$url = $matches[$i][2];
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if (isset($matches[$i][3]))
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{
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$delim = "'";
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$url = $matches[$i][3];
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}
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$css = str_replace($matches[$i][0], '@import ' . $delim . proxify_css_url($matches[$i][1]) . $delim . (isset($matches[$i][4]) ? $matches[$i][4] : ''), $css);
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}
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return $css;
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}
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function proxify_css_url($url)
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{
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$url = trim($url);
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$delim = strpos($url, '"') === 0 ? '"' : (strpos($url, "'") === 0 ? "'" : '');
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return $delim . preg_replace('#([\(\),\s\'"\\\])#', '\\$1', complete_url(trim(preg_replace('#\\\(.)#', '$1', trim($url, $delim))))) . $delim;
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}
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//
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// SET FLAGS
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//
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if (isset($_POST[$_config['url_var_name']]) && !isset($_GET[$_config['url_var_name']]) && isset($_POST[$_config['flags_var_name']]))
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{
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foreach ($_flags as $flag_name => $flag_value)
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{
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$_iflags .= isset($_POST[$_config['flags_var_name']][$flag_name]) ? (string)(int)(bool)$_POST[$_config['flags_var_name']][$flag_name] : ($_frozen_flags[$flag_name] ? $flag_value : '0');
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}
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$_iflags = base_convert(($_iflags != '' ? $_iflags : '0'), 2, 16);
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}
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else if (isset($_GET[$_config['flags_var_name']]) && !isset($_GET[$_config['get_form_name']]) && ctype_alnum($_GET[$_config['flags_var_name']]))
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{
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$_iflags = $_GET[$_config['flags_var_name']];
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}
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else if (isset($_COOKIE['flags']) && ctype_alnum($_COOKIE['flags']))
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{
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$_iflags = $_COOKIE['flags'];
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}
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if ($_iflags !== '')
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{
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$_set_cookie[] = add_cookie('flags', $_iflags, time()+2419200);
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$_iflags = str_pad(base_convert($_iflags, 16, 2), count($_flags), '0', STR_PAD_LEFT);
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$i = 0;
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foreach ($_flags as $flag_name => $flag_value)
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{
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$_flags[$flag_name] = $_frozen_flags[$flag_name] ? $flag_value : (int)(bool)$_iflags{$i};
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$i++;
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}
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}
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//
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// DETERMINE URL-ENCODING BASED ON FLAGS
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//
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if ($_flags['rotate13'])
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{
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function encode_url($url)
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{
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return rawurlencode(str_rot13($url));
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}
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function decode_url($url)
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{
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return str_replace(array('&', '&'), '&', str_rot13(rawurldecode($url)));
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}
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}
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else if ($_flags['base64_encode'])
|
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{
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function encode_url($url)
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{
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return rawurlencode(base64_encode($url));
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}
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function decode_url($url)
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{
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return str_replace(array('&', '&'), '&', base64_decode(rawurldecode($url)));
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}
|
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}
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else
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{
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function encode_url($url)
|
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{
|
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return rawurlencode($url);
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}
|
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function decode_url($url)
|
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{
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return str_replace(array('&', '&'), '&', rawurldecode($url));
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}
|
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}
|
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|
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//
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// COMPRESS OUTPUT IF INSTRUCTED
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//
|
|
|
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if ($_config['compress_output'] && $_system['gzip'])
|
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{
|
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ob_start('ob_gzhandler');
|
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}
|
|
|
|
//
|
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// STRIP SLASHES FROM GPC IF NECESSARY
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//
|
|
|
|
if ($_system['stripslashes'])
|
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{
|
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function _stripslashes($value)
|
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{
|
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return is_array($value) ? array_map('_stripslashes', $value) : (is_string($value) ? stripslashes($value) : $value);
|
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}
|
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|
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$_GET = _stripslashes($_GET);
|
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$_POST = _stripslashes($_POST);
|
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$_COOKIE = _stripslashes($_COOKIE);
|
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}
|
|
|
|
//
|
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// FIGURE OUT WHAT TO DO (POST URL-form submit, GET form request, regular request, basic auth, cookie manager, show URL-form)
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//
|
|
|
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if (isset($_POST[$_config['url_var_name']]) && !isset($_GET[$_config['url_var_name']]))
|
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{
|
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header('Location: ' . $_script_url . '?' . $_config['url_var_name'] . '=' . encode_url($_POST[$_config['url_var_name']]) . '&' . $_config['flags_var_name'] . '=' . base_convert($_iflags, 2, 16));
|
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exit(0);
|
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}
|
|
|
|
if (isset($_GET[$_config['get_form_name']]))
|
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{
|
|
$_url = decode_url($_GET[$_config['get_form_name']]);
|
|
$qstr = strpos($_url, '?') !== false ? (strpos($_url, '?') === strlen($_url)-1 ? '' : '&') : '?';
|
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$arr = explode('&', $_SERVER['QUERY_STRING']);
|
|
|
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if (preg_match('#^\Q' . $_config['get_form_name'] . '\E#', $arr[0]))
|
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{
|
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array_shift($arr);
|
|
}
|
|
|
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$_url .= $qstr . implode('&', $arr);
|
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}
|
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else if (isset($_GET[$_config['url_var_name']]))
|
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{
|
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$_url = decode_url($_GET[$_config['url_var_name']]);
|
|
}
|
|
else if (isset($_GET['action']) && $_GET['action'] == 'cookies')
|
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{
|
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show_report(array('which' => 'cookies'));
|
|
}
|
|
else
|
|
{
|
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show_report(array('which' => 'index', 'category' => 'entry_form'));
|
|
}
|
|
|
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if (isset($_GET[$_config['url_var_name']], $_POST[$_config['basic_auth_var_name']], $_POST['username'], $_POST['password']))
|
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{
|
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$_request_method = 'GET';
|
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$_basic_auth_realm = base64_decode($_POST[$_config['basic_auth_var_name']]);
|
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$_basic_auth_header = base64_encode($_POST['username'] . ':' . $_POST['password']);
|
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}
|
|
|
|
//
|
|
// SET URL
|
|
//
|
|
|
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if (strpos($_url, '://') === false)
|
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{
|
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$_url = 'http://' . $_url;
|
|
}
|
|
|
|
if (url_parse($_url, $_url_parts))
|
|
{
|
|
$_base = $_url_parts;
|
|
|
|
if (!empty($_hosts))
|
|
{
|
|
foreach ($_hosts as $host)
|
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{
|
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if (preg_match($host, $_url_parts['host']))
|
|
{
|
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show_report(array('which' => 'index', 'category' => 'error', 'group' => 'url', 'type' => 'external', 'error' => 1));
|
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}
|
|
}
|
|
}
|
|
}
|
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else
|
|
{
|
|
show_report(array('which' => 'index', 'category' => 'error', 'group' => 'url', 'type' => 'external', 'error' => 2));
|
|
}
|
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|
|
//
|
|
// HOTLINKING PREVENTION
|
|
//
|
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|
|
if (!$_config['allow_hotlinking'] && isset($_SERVER['HTTP_REFERER']))
|
|
{
|
|
$_hotlink_domains[] = $_http_host;
|
|
$is_hotlinking = true;
|
|
|
|
foreach ($_hotlink_domains as $host)
|
|
{
|
|
if (preg_match('#^https?\:\/\/(www)?\Q' . $host . '\E(\/|\:|$)#i', trim($_SERVER['HTTP_REFERER'])))
|
|
{
|
|
$is_hotlinking = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ($is_hotlinking)
|
|
{
|
|
switch ($_config['upon_hotlink'])
|
|
{
|
|
case 1:
|
|
show_report(array('which' => 'index', 'category' => 'error', 'group' => 'resource', 'type' => 'hotlinking'));
|
|
break;
|
|
case 2:
|
|
header('HTTP/1.0 404 Not Found');
|
|
exit(0);
|
|
default:
|
|
header('Location: ' . $_config['upon_hotlink']);
|
|
exit(0);
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// OPEN SOCKET TO SERVER
|
|
//
|
|
|
|
do
|
|
{
|
|
$_retry = false;
|
|
$_socket = @fsockopen(($_url_parts['scheme'] === 'https' && $_system['ssl'] ? 'ssl://' : 'tcp://') . $_url_parts['host'], $_url_parts['port'], $err_no, $err_str, 30);
|
|
|
|
if ($_socket === false)
|
|
{
|
|
show_report(array('which' => 'index', 'category' => 'error', 'group' => 'url', 'type' => 'internal', 'error' => $err_no));
|
|
}
|
|
|
|
//
|
|
// SET REQUEST HEADERS
|
|
//
|
|
|
|
$_request_headers = $_request_method . ' ' . $_url_parts['path'];
|
|
|
|
if (isset($_url_parts['query']))
|
|
{
|
|
$_request_headers .= '?';
|
|
$query = preg_split('#([&;])#', $_url_parts['query'], -1, PREG_SPLIT_DELIM_CAPTURE);
|
|
for ($i = 0, $count = count($query); $i < $count; $_request_headers .= implode('=', array_map('urlencode', array_map('urldecode', explode('=', $query[$i])))) . (isset($query[++$i]) ? $query[$i] : ''), $i++);
|
|
}
|
|
|
|
$_request_headers .= " HTTP/1.0\r\n";
|
|
$_request_headers .= 'Host: ' . $_url_parts['host'] . $_url_parts['port_ext'] . "\r\n";
|
|
|
|
if (isset($_SERVER['HTTP_USER_AGENT']))
|
|
{
|
|
$_request_headers .= 'User-Agent: ' . $_SERVER['HTTP_USER_AGENT'] . "\r\n";
|
|
}
|
|
if (isset($_SERVER['HTTP_ACCEPT']))
|
|
{
|
|
$_request_headers .= 'Accept: ' . $_SERVER['HTTP_ACCEPT'] . "\r\n";
|
|
}
|
|
else
|
|
{
|
|
$_request_headers .= "Accept: */*;q=0.1\r\n";
|
|
}
|
|
if ($_flags['show_referer'] && isset($_SERVER['HTTP_REFERER']) && preg_match('#^\Q' . $_script_url . '?' . $_config['url_var_name'] . '=\E([^&]+)#', $_SERVER['HTTP_REFERER'], $matches))
|
|
{
|
|
$_request_headers .= 'Referer: ' . decode_url($matches[1]) . "\r\n";
|
|
}
|
|
if (!empty($_COOKIE))
|
|
{
|
|
$_cookie = '';
|
|
$_auth_creds = array();
|
|
|
|
foreach ($_COOKIE as $cookie_id => $cookie_content)
|
|
{
|
|
$cookie_id = explode(';', rawurldecode($cookie_id));
|
|
$cookie_content = explode(';', rawurldecode($cookie_content));
|
|
|
|
if ($cookie_id[0] === 'COOKIE')
|
|
{
|
|
$cookie_id[3] = str_replace('_', '.', $cookie_id[3]); //stupid PHP can't have dots in var names
|
|
|
|
if (count($cookie_id) < 4 || ($cookie_content[1] == 'secure' && $_url_parts['scheme'] != 'https'))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if ((preg_match('#\Q' . $cookie_id[3] . '\E$#i', $_url_parts['host']) || strtolower($cookie_id[3]) == strtolower('.' . $_url_parts['host'])) && preg_match('#^\Q' . $cookie_id[2] . '\E#', $_url_parts['path']))
|
|
{
|
|
$_cookie .= ($_cookie != '' ? '; ' : '') . (empty($cookie_id[1]) ? '' : $cookie_id[1] . '=') . $cookie_content[0];
|
|
}
|
|
}
|
|
else if ($cookie_id[0] === 'AUTH' && count($cookie_id) === 3)
|
|
{
|
|
$cookie_id[2] = str_replace('_', '.', $cookie_id[2]);
|
|
|
|
if ($_url_parts['host'] . ':' . $_url_parts['port'] === $cookie_id[2])
|
|
{
|
|
$_auth_creds[$cookie_id[1]] = $cookie_content[0];
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($_cookie != '')
|
|
{
|
|
$_request_headers .= "Cookie: $_cookie\r\n";
|
|
}
|
|
}
|
|
if (isset($_url_parts['user'], $_url_parts['pass']))
|
|
{
|
|
$_basic_auth_header = base64_encode($_url_parts['user'] . ':' . $_url_parts['pass']);
|
|
}
|
|
if (!empty($_basic_auth_header))
|
|
{
|
|
$_set_cookie[] = add_cookie("AUTH;{$_basic_auth_realm};{$_url_parts['host']}:{$_url_parts['port']}", $_basic_auth_header);
|
|
$_request_headers .= "Authorization: Basic {$_basic_auth_header}\r\n";
|
|
}
|
|
else if (!empty($_basic_auth_realm) && isset($_auth_creds[$_basic_auth_realm]))
|
|
{
|
|
$_request_headers .= "Authorization: Basic {$_auth_creds[$_basic_auth_realm]}\r\n";
|
|
}
|
|
else if (list($_basic_auth_realm, $_basic_auth_header) = each($_auth_creds))
|
|
{
|
|
$_request_headers .= "Authorization: Basic {$_basic_auth_header}\r\n";
|
|
}
|
|
if ($_request_method == 'POST')
|
|
{
|
|
if (!empty($_FILES) && $_system['uploads'])
|
|
{
|
|
$_data_boundary = '----' . md5(uniqid(rand(), true));
|
|
$array = set_post_vars($_POST);
|
|
|
|
foreach ($array as $key => $value)
|
|
{
|
|
$_post_body .= "--{$_data_boundary}\r\n";
|
|
$_post_body .= "Content-Disposition: form-data; name=\"$key\"\r\n\r\n";
|
|
$_post_body .= urldecode($value) . "\r\n";
|
|
}
|
|
|
|
$array = set_post_files($_FILES);
|
|
|
|
foreach ($array as $key => $file_info)
|
|
{
|
|
$_post_body .= "--{$_data_boundary}\r\n";
|
|
$_post_body .= "Content-Disposition: form-data; name=\"$key\"; filename=\"{$file_info['name']}\"\r\n";
|
|
$_post_body .= 'Content-Type: ' . (empty($file_info['type']) ? 'application/octet-stream' : $file_info['type']) . "\r\n\r\n";
|
|
|
|
if (is_readable($file_info['tmp_name']))
|
|
{
|
|
$handle = fopen($file_info['tmp_name'], 'rb');
|
|
$_post_body .= fread($handle, filesize($file_info['tmp_name']));
|
|
fclose($handle);
|
|
}
|
|
|
|
$_post_body .= "\r\n";
|
|
}
|
|
|
|
$_post_body .= "--{$_data_boundary}--\r\n";
|
|
$_request_headers .= "Content-Type: multipart/form-data; boundary={$_data_boundary}\r\n";
|
|
$_request_headers .= "Content-Length: " . strlen($_post_body) . "\r\n\r\n";
|
|
$_request_headers .= $_post_body;
|
|
}
|
|
else
|
|
{
|
|
$array = set_post_vars($_POST);
|
|
|
|
foreach ($array as $key => $value)
|
|
{
|
|
$_post_body .= !empty($_post_body) ? '&' : '';
|
|
$_post_body .= $key . '=' . $value;
|
|
}
|
|
$_request_headers .= "Content-Type: application/x-www-form-urlencoded\r\n";
|
|
$_request_headers .= "Content-Length: " . strlen($_post_body) . "\r\n\r\n";
|
|
$_request_headers .= $_post_body;
|
|
$_request_headers .= "\r\n";
|
|
}
|
|
|
|
$_post_body = '';
|
|
}
|
|
else
|
|
{
|
|
$_request_headers .= "\r\n";
|
|
}
|
|
|
|
fwrite($_socket, $_request_headers);
|
|
|
|
//
|
|
// PROCESS RESPONSE HEADERS
|
|
//
|
|
|
|
$_response_headers = $_response_keys = array();
|
|
|
|
$line = fgets($_socket, 8192);
|
|
|
|
while (strspn($line, "\r\n") !== strlen($line))
|
|
{
|
|
@list($name, $value) = explode(':', $line, 2);
|
|
$name = trim($name);
|
|
$_response_headers[strtolower($name)][] = trim($value);
|
|
$_response_keys[strtolower($name)] = $name;
|
|
$line = fgets($_socket, 8192);
|
|
}
|
|
|
|
sscanf(current($_response_keys), '%s %s', $_http_version, $_response_code);
|
|
|
|
if (isset($_response_headers['content-type']))
|
|
{
|
|
list($_content_type, ) = explode(';', str_replace(' ', '', strtolower($_response_headers['content-type'][0])), 2);
|
|
}
|
|
if (isset($_response_headers['content-length']))
|
|
{
|
|
$_content_length = $_response_headers['content-length'][0];
|
|
unset($_response_headers['content-length'], $_response_keys['content-length']);
|
|
}
|
|
if (isset($_response_headers['content-disposition']))
|
|
{
|
|
$_content_disp = $_response_headers['content-disposition'][0];
|
|
unset($_response_headers['content-disposition'], $_response_keys['content-disposition']);
|
|
}
|
|
if (isset($_response_headers['set-cookie']) && $_flags['accept_cookies'])
|
|
{
|
|
foreach ($_response_headers['set-cookie'] as $cookie)
|
|
{
|
|
$name = $value = $expires = $path = $domain = $secure = $expires_time = '';
|
|
|
|
preg_match('#^\s*([^=;,\s]*)\s*=?\s*([^;]*)#', $cookie, $match) && list(, $name, $value) = $match;
|
|
preg_match('#;\s*expires\s*=\s*([^;]*)#i', $cookie, $match) && list(, $expires) = $match;
|
|
preg_match('#;\s*path\s*=\s*([^;,\s]*)#i', $cookie, $match) && list(, $path) = $match;
|
|
preg_match('#;\s*domain\s*=\s*([^;,\s]*)#i', $cookie, $match) && list(, $domain) = $match;
|
|
preg_match('#;\s*(secure\b)#i', $cookie, $match) && list(, $secure) = $match;
|
|
|
|
$expires_time = empty($expires) ? 0 : intval(@strtotime($expires));
|
|
$expires = ($_flags['session_cookies'] && !empty($expires) && time()-$expires_time < 0) ? '' : $expires;
|
|
$path = empty($path) ? '/' : $path;
|
|
|
|
if (empty($domain))
|
|
{
|
|
$domain = $_url_parts['host'];
|
|
}
|
|
else
|
|
{
|
|
$domain = '.' . strtolower(str_replace('..', '.', trim($domain, '.')));
|
|
|
|
if ((!preg_match('#\Q' . $domain . '\E$#i', $_url_parts['host']) && $domain != '.' . $_url_parts['host']) || (substr_count($domain, '.') < 2 && $domain{0} == '.'))
|
|
{
|
|
continue;
|
|
}
|
|
}
|
|
if (count($_COOKIE) >= 15 && time()-$expires_time <= 0)
|
|
{
|
|
$_set_cookie[] = add_cookie(current($_COOKIE), '', 1);
|
|
}
|
|
|
|
$_set_cookie[] = add_cookie("COOKIE;$name;$path;$domain", "$value;$secure", $expires_time);
|
|
}
|
|
}
|
|
if (isset($_response_headers['set-cookie']))
|
|
{
|
|
unset($_response_headers['set-cookie'], $_response_keys['set-cookie']);
|
|
}
|
|
if (!empty($_set_cookie))
|
|
{
|
|
$_response_keys['set-cookie'] = 'Set-Cookie';
|
|
$_response_headers['set-cookie'] = $_set_cookie;
|
|
}
|
|
if (isset($_response_headers['p3p']) && preg_match('#policyref\s*=\s*[\'"]?([^\'"\s]*)[\'"]?#i', $_response_headers['p3p'][0], $matches))
|
|
{
|
|
$_response_headers['p3p'][0] = str_replace($matches[0], 'policyref="' . complete_url($matches[1]) . '"', $_response_headers['p3p'][0]);
|
|
}
|
|
if (isset($_response_headers['refresh']) && preg_match('#([0-9\s]*;\s*URL\s*=)\s*(\S*)#i', $_response_headers['refresh'][0], $matches))
|
|
{
|
|
$_response_headers['refresh'][0] = $matches[1] . complete_url($matches[2]);
|
|
}
|
|
if (isset($_response_headers['location']))
|
|
{
|
|
$_response_headers['location'][0] = complete_url($_response_headers['location'][0]);
|
|
}
|
|
if (isset($_response_headers['uri']))
|
|
{
|
|
$_response_headers['uri'][0] = complete_url($_response_headers['uri'][0]);
|
|
}
|
|
if (isset($_response_headers['content-location']))
|
|
{
|
|
$_response_headers['content-location'][0] = complete_url($_response_headers['content-location'][0]);
|
|
}
|
|
if (isset($_response_headers['connection']))
|
|
{
|
|
unset($_response_headers['connection'], $_response_keys['connection']);
|
|
}
|
|
if (isset($_response_headers['keep-alive']))
|
|
{
|
|
unset($_response_headers['keep-alive'], $_response_keys['keep-alive']);
|
|
}
|
|
if ($_response_code == 401 && isset($_response_headers['www-authenticate']) && preg_match('#basic\s+(?:realm="(.*?)")?#i', $_response_headers['www-authenticate'][0], $matches))
|
|
{
|
|
if (isset($_auth_creds[$matches[1]]) && !$_quit)
|
|
{
|
|
$_basic_auth_realm = $matches[1];
|
|
$_basic_auth_header = '';
|
|
$_retry = $_quit = true;
|
|
}
|
|
else
|
|
{
|
|
show_report(array('which' => 'index', 'category' => 'auth', 'realm' => $matches[1]));
|
|
}
|
|
}
|
|
}
|
|
while ($_retry);
|
|
|
|
//
|
|
// OUTPUT RESPONSE IF NO PROXIFICATION IS NEEDED
|
|
//
|
|
|
|
if (!isset($_proxify[$_content_type]))
|
|
{
|
|
@set_time_limit(0);
|
|
|
|
$_response_keys['content-disposition'] = 'Content-Disposition';
|
|
$_response_headers['content-disposition'][0] = empty($_content_disp) ? ($_content_type == 'application/octet_stream' ? 'attachment' : 'inline') . '; filename="' . $_url_parts['file'] . '"' : $_content_disp;
|
|
|
|
if ($_content_length !== false)
|
|
{
|
|
if ($_config['max_file_size'] != -1 && $_content_length > $_config['max_file_size'])
|
|
{
|
|
show_report(array('which' => 'index', 'category' => 'error', 'group' => 'resource', 'type' => 'file_size'));
|
|
}
|
|
|
|
$_response_keys['content-length'] = 'Content-Length';
|
|
$_response_headers['content-length'][0] = $_content_length;
|
|
}
|
|
|
|
$_response_headers = array_filter($_response_headers);
|
|
$_response_keys = array_filter($_response_keys);
|
|
|
|
header(array_shift($_response_keys));
|
|
array_shift($_response_headers);
|
|
|
|
foreach ($_response_headers as $name => $array)
|
|
{
|
|
foreach ($array as $value)
|
|
{
|
|
header($_response_keys[$name] . ': ' . $value, false);
|
|
}
|
|
}
|
|
|
|
do
|
|
{
|
|
$data = fread($_socket, 8192);
|
|
echo $data;
|
|
}
|
|
while (isset($data{0}));
|
|
|
|
fclose($_socket);
|
|
exit(0);
|
|
}
|
|
|
|
do
|
|
{
|
|
$data = @fread($_socket, 8192); // silenced to avoid the "normal" warning by a faulty SSL connection
|
|
$_response_body .= $data;
|
|
}
|
|
while (isset($data{0}));
|
|
|
|
unset($data);
|
|
fclose($_socket);
|
|
|
|
//
|
|
// MODIFY AND DUMP RESOURCE
|
|
//
|
|
|
|
if ($_content_type == 'text/css')
|
|
{
|
|
$_response_body = proxify_css($_response_body);
|
|
}
|
|
else
|
|
{
|
|
if ($_flags['strip_title'])
|
|
{
|
|
$_response_body = preg_replace('#(<\s*title[^>]*>)(.*?)(<\s*/title[^>]*>)#is', '$1$3', $_response_body);
|
|
}
|
|
if ($_flags['remove_scripts'])
|
|
{
|
|
$_response_body = preg_replace('#<\s*script[^>]*?>.*?<\s*/\s*script\s*>#si', '', $_response_body);
|
|
$_response_body = preg_replace("#(\bon[a-z]+)\s*=\s*(?:\"([^\"]*)\"?|'([^']*)'?|([^'\"\s>]*))?#i", '', $_response_body);
|
|
$_response_body = preg_replace('#<noscript>(.*?)</noscript>#si', "$1", $_response_body);
|
|
}
|
|
if (!$_flags['show_images'])
|
|
{
|
|
$_response_body = preg_replace('#<(img|image)[^>]*?>#si', '', $_response_body);
|
|
}
|
|
|
|
//
|
|
// PROXIFY HTML RESOURCE
|
|
//
|
|
|
|
$tags = array
|
|
(
|
|
'a' => array('href'),
|
|
'img' => array('src', 'longdesc'),
|
|
'image' => array('src', 'longdesc'),
|
|
'body' => array('background'),
|
|
'base' => array('href'),
|
|
'frame' => array('src', 'longdesc'),
|
|
'iframe' => array('src', 'longdesc'),
|
|
'head' => array('profile'),
|
|
'layer' => array('src'),
|
|
'input' => array('src', 'usemap'),
|
|
'form' => array('action'),
|
|
'area' => array('href'),
|
|
'link' => array('href', 'src', 'urn'),
|
|
'meta' => array('content'),
|
|
'param' => array('value'),
|
|
'applet' => array('codebase', 'code', 'object', 'archive'),
|
|
'object' => array('usermap', 'codebase', 'classid', 'archive', 'data'),
|
|
'script' => array('src'),
|
|
'select' => array('src'),
|
|
'hr' => array('src'),
|
|
'table' => array('background'),
|
|
'tr' => array('background'),
|
|
'th' => array('background'),
|
|
'td' => array('background'),
|
|
'bgsound' => array('src'),
|
|
'blockquote' => array('cite'),
|
|
'del' => array('cite'),
|
|
'embed' => array('src'),
|
|
'fig' => array('src', 'imagemap'),
|
|
'ilayer' => array('src'),
|
|
'ins' => array('cite'),
|
|
'note' => array('src'),
|
|
'overlay' => array('src', 'imagemap'),
|
|
'q' => array('cite'),
|
|
'ul' => array('src')
|
|
);
|
|
|
|
preg_match_all('#(<\s*style[^>]*>)(.*?)(<\s*/\s*style[^>]*>)#is', $_response_body, $matches, PREG_SET_ORDER);
|
|
|
|
for ($i = 0, $count_i = count($matches); $i < $count_i; ++$i)
|
|
{
|
|
$_response_body = str_replace($matches[$i][0], $matches[$i][1]. proxify_css($matches[$i][2]) .$matches[$i][3], $_response_body);
|
|
}
|
|
|
|
preg_match_all("#<\s*([a-zA-Z\?-]+)([^>]+)>#S", $_response_body, $matches);
|
|
|
|
for ($i = 0, $count_i = count($matches[0]); $i < $count_i; ++$i)
|
|
{
|
|
if (!preg_match_all("#([a-zA-Z\-\/]+)\s*(?:=\s*(?:\"([^\">]*)\"?|'([^'>]*)'?|([^'\"\s]*)))?#S", $matches[2][$i], $m, PREG_SET_ORDER))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
$rebuild = false;
|
|
$extra_html = $temp = '';
|
|
$attrs = array();
|
|
|
|
for ($j = 0, $count_j = count($m); $j < $count_j; $attrs[strtolower($m[$j][1])] = (isset($m[$j][4]) ? $m[$j][4] : (isset($m[$j][3]) ? $m[$j][3] : (isset($m[$j][2]) ? $m[$j][2] : false))), ++$j);
|
|
|
|
if (isset($attrs['style']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['style'] = proxify_inline_css($attrs['style']);
|
|
}
|
|
|
|
$tag = strtolower($matches[1][$i]);
|
|
|
|
if (isset($tags[$tag]))
|
|
{
|
|
switch ($tag)
|
|
{
|
|
case 'a':
|
|
if (isset($attrs['href']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['href'] = complete_url($attrs['href']);
|
|
}
|
|
break;
|
|
case 'img':
|
|
if (isset($attrs['src']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['src'] = complete_url($attrs['src']);
|
|
}
|
|
if (isset($attrs['longdesc']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['longdesc'] = complete_url($attrs['longdesc']);
|
|
}
|
|
break;
|
|
case 'form':
|
|
if (isset($attrs['action']))
|
|
{
|
|
$rebuild = true;
|
|
|
|
if (trim($attrs['action']) === '')
|
|
{
|
|
$attrs['action'] = $_url_parts['path'];
|
|
}
|
|
if (!isset($attrs['method']) || strtolower(trim($attrs['method'])) === 'get')
|
|
{
|
|
$extra_html = '<input type="hidden" name="' . $_config['get_form_name'] . '" value="' . encode_url(complete_url($attrs['action'], false)) . '" />';
|
|
$attrs['action'] = '';
|
|
break;
|
|
}
|
|
|
|
$attrs['action'] = complete_url($attrs['action']);
|
|
}
|
|
break;
|
|
case 'base':
|
|
if (isset($attrs['href']))
|
|
{
|
|
$rebuild = true;
|
|
url_parse($attrs['href'], $_base);
|
|
$attrs['href'] = complete_url($attrs['href']);
|
|
}
|
|
break;
|
|
case 'meta':
|
|
if ($_flags['strip_meta'] && isset($attrs['name']))
|
|
{
|
|
$_response_body = str_replace($matches[0][$i], '', $_response_body);
|
|
}
|
|
if (isset($attrs['http-equiv'], $attrs['content']) && preg_match('#\s*refresh\s*#i', $attrs['http-equiv']))
|
|
{
|
|
if (preg_match('#^(\s*[0-9]*\s*;\s*url=)(.*)#i', $attrs['content'], $content))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['content'] = $content[1] . complete_url(trim($content[2], '"\''));
|
|
}
|
|
}
|
|
break;
|
|
case 'head':
|
|
if (isset($attrs['profile']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['profile'] = implode(' ', array_map('complete_url', explode(' ', $attrs['profile'])));
|
|
}
|
|
break;
|
|
case 'applet':
|
|
if (isset($attrs['codebase']))
|
|
{
|
|
$rebuild = true;
|
|
$temp = $_base;
|
|
url_parse(complete_url(rtrim($attrs['codebase'], '/') . '/', false), $_base);
|
|
unset($attrs['codebase']);
|
|
}
|
|
if (isset($attrs['code']) && strpos($attrs['code'], '/') !== false)
|
|
{
|
|
$rebuild = true;
|
|
$attrs['code'] = complete_url($attrs['code']);
|
|
}
|
|
if (isset($attrs['object']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['object'] = complete_url($attrs['object']);
|
|
}
|
|
if (isset($attrs['archive']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['archive'] = implode(',', array_map('complete_url', preg_split('#\s*,\s*#', $attrs['archive'])));
|
|
}
|
|
if (!empty($temp))
|
|
{
|
|
$_base = $temp;
|
|
}
|
|
break;
|
|
case 'object':
|
|
if (isset($attrs['usemap']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['usemap'] = complete_url($attrs['usemap']);
|
|
}
|
|
if (isset($attrs['codebase']))
|
|
{
|
|
$rebuild = true;
|
|
$temp = $_base;
|
|
url_parse(complete_url(rtrim($attrs['codebase'], '/') . '/', false), $_base);
|
|
unset($attrs['codebase']);
|
|
}
|
|
if (isset($attrs['data']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['data'] = complete_url($attrs['data']);
|
|
}
|
|
if (isset($attrs['classid']) && !preg_match('#^clsid:#i', $attrs['classid']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['classid'] = complete_url($attrs['classid']);
|
|
}
|
|
if (isset($attrs['archive']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['archive'] = implode(' ', array_map('complete_url', explode(' ', $attrs['archive'])));
|
|
}
|
|
if (!empty($temp))
|
|
{
|
|
$_base = $temp;
|
|
}
|
|
break;
|
|
case 'param':
|
|
if (isset($attrs['valuetype'], $attrs['value']) && strtolower($attrs['valuetype']) == 'ref' && preg_match('#^[\w.+-]+://#', $attrs['value']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['value'] = complete_url($attrs['value']);
|
|
}
|
|
break;
|
|
case 'frame':
|
|
case 'iframe':
|
|
if (isset($attrs['src']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['src'] = complete_url($attrs['src']) . '&nf=1';
|
|
}
|
|
if (isset($attrs['longdesc']))
|
|
{
|
|
$rebuild = true;
|
|
$attrs['longdesc'] = complete_url($attrs['longdesc']);
|
|
}
|
|
break;
|
|
default:
|
|
foreach ($tags[$tag] as $attr)
|
|
{
|
|
if (isset($attrs[$attr]))
|
|
{
|
|
$rebuild = true;
|
|
$attrs[$attr] = complete_url($attrs[$attr]);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ($rebuild)
|
|
{
|
|
$new_tag = "<$tag";
|
|
foreach ($attrs as $name => $value)
|
|
{
|
|
$delim = strpos($value, '"') && !strpos($value, "'") ? "'" : '"';
|
|
$new_tag .= ' ' . $name . ($value !== false ? '=' . $delim . $value . $delim : '');
|
|
}
|
|
|
|
$_response_body = str_replace($matches[0][$i], $new_tag . '>' . $extra_html, $_response_body);
|
|
}
|
|
}
|
|
|
|
if ($_flags['include_form'] && !isset($_GET['nf']))
|
|
{
|
|
$_url_form = '<div style="width:100%;margin:0;text-align:center;border-bottom:1px solid #725554;color:#000000;background-color:#F2FDF3;font-size:12px;font-weight:bold;font-family:Bitstream Vera Sans,arial,sans-serif;padding:4px;">'
|
|
. '<form method="post" action="' . $_script_url . '">'
|
|
. ' <label for="____' . $_config['url_var_name'] . '"><a href="' . $_url . '">Address</a>:</label> <input id="____' . $_config['url_var_name'] . '" type="text" size="80" name="' . $_config['url_var_name'] . '" value="' . $_url . '" />'
|
|
. ' <input type="submit" name="go" value="Go" />'
|
|
. ' [go: <a href="' . $_script_url . '?' . $_config['url_var_name'] . '=' . encode_url($_url_parts['prev_dir']) .' ">up one dir</a>, <a href="' . $_script_base . '">main page</a>]'
|
|
. '<br /><hr />';
|
|
|
|
foreach ($_flags as $flag_name => $flag_value)
|
|
{
|
|
if (!$_frozen_flags[$flag_name])
|
|
{
|
|
$_url_form .= '<label><input type="checkbox" name="' . $_config['flags_var_name'] . '[' . $flag_name . ']"' . ($flag_value ? ' checked="checked"' : '') . ' /> ' . $_labels[$flag_name][0] . '</label> ';
|
|
}
|
|
}
|
|
|
|
$_url_form .= '</form></div>';
|
|
$_response_body = preg_replace('#\<\s*body(.*?)\>#si', "$0\n$_url_form" , $_response_body, 1);
|
|
}
|
|
}
|
|
|
|
$_response_keys['content-disposition'] = 'Content-Disposition';
|
|
$_response_headers['content-disposition'][0] = empty($_content_disp) ? ($_content_type == 'application/octet_stream' ? 'attachment' : 'inline') . '; filename="' . $_url_parts['file'] . '"' : $_content_disp;
|
|
$_response_keys['content-length'] = 'Content-Length';
|
|
$_response_headers['content-length'][0] = strlen($_response_body);
|
|
$_response_headers = array_filter($_response_headers);
|
|
$_response_keys = array_filter($_response_keys);
|
|
|
|
header(array_shift($_response_keys));
|
|
array_shift($_response_headers);
|
|
|
|
foreach ($_response_headers as $name => $array)
|
|
{
|
|
foreach ($array as $value)
|
|
{
|
|
header($_response_keys[$name] . ': ' . $value, false);
|
|
}
|
|
}
|
|
|
|
echo $_response_body;
|
|
?>
|