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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,95 +1,92 @@ | ||
| <?php | ||
| /**************************************************************************\ | ||
| * eGroupWare - save redirect script * | ||
| * idea by: Jason Wies <jason@xc.net> * | ||
| * doing and adding to cvs: Lars Kneschke <lkneschke@linux-at-work.de> * | ||
| * http://www.egroupware.org * | ||
| * -------------------------------------------- * | ||
| * This program is free software; you can redistribute it and/or modify it * | ||
| * under the terms of the GNU General Public License as published by the * | ||
| * Free Software Foundation; either version 2 of the License, or (at your * | ||
| * option) any later version. * | ||
| \**************************************************************************/ | ||
| /** | ||
| * EGroupware save redirect script | ||
| * | ||
| * idea by: Jason Wies | ||
| * doing and adding to cvs: Lars Kneschke | ||
| * | ||
| * @link http://www.egroupware.org | ||
| * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License | ||
| */ | ||
|
|
||
| /* $Id$ */ | ||
| use EGroupware\Api; | ||
|
|
||
| /* | ||
| Use this script when you want to link to a external url. | ||
| This way you don't send something like sessionid as referer | ||
| /* | ||
| Use this script when you want to link to a external url. | ||
| This way you don't send something like sessionid as referer | ||
| Use this in your app: | ||
| Use this in your app: | ||
| "<a href=\"$webserverURL/redirect.php?go=".htmlentities(urlencode('http://www.egroupware.org')).'">' | ||
| */ | ||
| "<a href=\"$webserverURL/redirect.php?go=".htmlentities(urlencode('http://www.egroupware.org')).'">' | ||
| */ | ||
|
|
||
| if(!function_exists('html_entity_decode')) | ||
| if(!function_exists('html_entity_decode')) | ||
| { | ||
| function html_entity_decode($given_html, $quote_style = ENT_QUOTES) | ||
| { | ||
| function html_entity_decode($given_html, $quote_style = ENT_QUOTES) | ||
| { | ||
| $trans_table = array_flip(get_html_translation_table( HTML_SPECIALCHARS, $quote_style)); | ||
| $trans_table['''] = "'"; | ||
| return(strtr($given_html, $trans_table)); | ||
| } | ||
| $trans_table = array_flip(get_html_translation_table( HTML_SPECIALCHARS, $quote_style)); | ||
| $trans_table['''] = "'"; | ||
| return(strtr($given_html, $trans_table)); | ||
| } | ||
| } | ||
|
|
||
| /* Only allow redirects with a valid session */ | ||
| $GLOBALS['egw_info'] = array( | ||
| 'flags' => array( | ||
| 'noheader' => True, | ||
| 'nonavbar' => True, | ||
| 'currentapp' => 'home' | ||
| ) | ||
| ); | ||
| include('./header.inc.php'); | ||
| /* Only allow redirects with a valid session */ | ||
| $GLOBALS['egw_info'] = array( | ||
| 'flags' => array( | ||
| 'noheader' => True, | ||
| 'nonavbar' => True, | ||
| 'currentapp' => 'home' | ||
| ) | ||
| ); | ||
| include('./header.inc.php'); | ||
|
|
||
|
|
||
| /* Only allow redirects from inside this eGroupware installation. */ | ||
| $valid_referer = array(); | ||
| $path = preg_replace('/\/[^\/]*$/','',$_SERVER['PHP_SELF']) . '/'; | ||
| array_push($valid_referer, $path); | ||
| array_push($valid_referer, ($_SERVER['HTTPS'] ? 'https://' : 'http://') . $_SERVER['SERVER_ADDR'] . $path); | ||
| array_push($valid_referer, ($_SERVER['HTTPS'] ? 'https://' : 'http://') . $_SERVER['SERVER_NAME'] . $path); | ||
| /* Only allow redirects from inside this eGroupware installation. */ | ||
| $valid_referer = array(); | ||
| $path = preg_replace('/\/[^\/]*$/','',$_SERVER['PHP_SELF']) . '/'; | ||
| array_push($valid_referer, $path); | ||
| array_push($valid_referer, Api\Header\Http::schema() . '//' . $_SERVER['SERVER_ADDR'] . $path); | ||
| array_push($valid_referer, Api\Framework::getUrl($path)); | ||
|
|
||
| $referrer = trim($_SERVER['HTTP_REFERER']); | ||
| if ((!isset($_SERVER['HTTP_REFERER'])) || (empty($referrer))) | ||
| $referrer = trim($_SERVER['HTTP_REFERER']); | ||
| if ((!isset($_SERVER['HTTP_REFERER'])) || (empty($referrer))) | ||
| { | ||
| echo "Only usable from within eGroupware.\n"; | ||
| } | ||
| else if($_GET['go']) | ||
| { | ||
| $allow = false; | ||
| foreach ($valid_referer as $urlRoot) | ||
| { | ||
| echo "Only usable from within eGroupware.\n"; | ||
| /* Check if the referrer begins with a valid URL. */ | ||
| if (strncmp($urlRoot, $referrer, strlen($urlRoot)) == 0) | ||
| { | ||
| $allow = true; | ||
| break; | ||
| } | ||
| } | ||
| else if($_GET['go']) | ||
| if ($allow) | ||
| { | ||
| $allow = false; | ||
| foreach ($valid_referer as $urlRoot) | ||
| $url= html_entity_decode(urldecode($_GET['go'])); | ||
| unset($_GET['go']); | ||
| /* Only add "&" if there is something to append. */ | ||
| if (!empty($_GET)) | ||
| { | ||
| /* Check if the referrer begins with a valid URL. */ | ||
| if (strncmp($urlRoot, $referrer, strlen($urlRoot)) == 0) | ||
| { | ||
| $allow = true; | ||
| break; | ||
| } | ||
| $url=$url."&".http_build_query($_GET); | ||
| } | ||
| if ($allow) | ||
| { | ||
| $url= html_entity_decode(urldecode($_GET['go'])); | ||
| unset($_GET['go']); | ||
| /* Only add "&" if there is something to append. */ | ||
| if (!empty($_GET)) | ||
| { | ||
| $url=$url."&".http_build_query($_GET); | ||
| } | ||
|
|
||
| Header('Location: ' . html_entity_decode(urldecode($url))); | ||
| exit; | ||
| } | ||
| else | ||
| { | ||
| echo "Redirect not allowed for referrer '".$_SERVER['HTTP_REFERER']."'.\n"; | ||
| echo "<pre>"; | ||
| print_r($valid_referer); | ||
| echo "<pre>\n"; | ||
| } | ||
| Header('Location: ' . html_entity_decode(urldecode($url))); | ||
| exit; | ||
| } | ||
| else | ||
| { | ||
| echo "Error redirecting."; | ||
| echo "Redirect not allowed for referrer '".$_SERVER['HTTP_REFERER']."'.\n"; | ||
| echo "<pre>"; | ||
| print_r($valid_referer); | ||
| echo "<pre>\n"; | ||
| } | ||
| ?> | ||
| } | ||
| else | ||
| { | ||
| echo "Error redirecting."; | ||
| } |