[squirrelmail.git] / contrib / decrypt_headers.php

<?php

/**
 * Script provides form to decode encrypted header information.
 *
 * @copyright &copy; 2005-2009 The SquirrelMail Project Team
 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
 * @version $Id$
 * @package squirrelmail
 */

/**
 * Set constant to path of your SquirrelMail install. 
 * @ignore
 */
define('SM_PATH','../');

/**
 * include SquirrelMail string and generic functions
 * script needs OneTimePadDecrypt() (functions/strings.php)
 * and sqgetGlobalVar() (functions/global.php)
 */
include_once(SM_PATH.'functions/global.php');
include_once(SM_PATH.'functions/strings.php');

/**
 * converts hex string to ip address
 * @param string $hex hexadecimal string created with squirrelmail ip2hex 
 *  function in delivery class.
 * @return string ip address
 * @since 1.5.1 and 1.4.5
 */
function hex2ip($hex) {
    if (strlen($hex)==8) {
        $ret=hexdec(substr($hex,0,2)).'.'
            .hexdec(substr($hex,2,2)).'.'
            .hexdec(substr($hex,4,2)).'.'
            .hexdec(substr($hex,6,2));
    } elseif (strlen($hex)==32) {
        $ret=substr($hex,0,4).':'
            .substr($hex,4,4).':'
            .substr($hex,8,4).':'
            .substr($hex,12,4).':'
            .substr($hex,16,4).':'
            .substr($hex,20,4).':'
            .substr($hex,24,4).':'
            .substr($hex,28,4);
    } else {
        $ret=$hex;
    }
    return $ret;
}

/** create page headers */
header('Content-Type: text/html');

echo '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"'."\n"
    .'  "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">'
    ."\n<head>\n<meta name=\"robots\" content=\"noindex,nofollow\">\n"
    ."</head><body>";

if (sqgetGlobalVar('submit',$submit,SQ_POST)) {
    if (! sqgetGlobalVar('secret',$secret,SQ_POST) ||
        empty($secret))
        echo "<p>You must enter encryption key.</p>\n";
    if (! sqgetGlobalVar('enc_string',$enc_string,SQ_POST) ||
        empty($enc_string))
        echo "<p>You must enter encrypted string.</p>\n";

    if (isset($enc_string) && ! base64_decode($enc_string)) {
        echo "<p>Encrypted string should be BASE64 encoded.<br />\n"
            ."Please enter all characters that are listed after header name.</p>\n";
    } elseif (isset($secret)) {
        $string=OneTimePadDecrypt($enc_string,base64_encode($secret));

        if (sqgetGlobalVar('ip_addr',$is_addr,SQ_POST)) {
            $string=hex2ip($string);
        }
        echo "<p>Decoded string: ".$string."</p>\n";
    }
    echo "<hr />";
}
?>
<form action="" method="post">
<p>
Secret key: <input type="password" name="secret"><br />
Encrypted string: <input type="text" name="enc_string"><br />
Check, if it is an address string: <input type="checkbox" name="ip_addr" /><br />
<button type="submit" name="submit" value="submit">Submit</button>
</p>
</form>
</body></html>
Commit	Line	Data
432db2fc	1	<?php
4b4abf93	2
432db2fc	3	/**
	4	* Script provides form to decode encrypted header information.
	5	*
d4e46166	6	* @copyright © 2005-2009 The SquirrelMail Project Team
4b4abf93	7	* @license http://opensource.org/licenses/gpl-license.php GNU Public License
432db2fc	8	* @version $Id$
	9	* @package squirrelmail
	10	*/
	11
	12	/**
	13	* Set constant to path of your SquirrelMail install.
	14	* @ignore
	15	*/
	16	define('SM_PATH','../');
	17
	18	/**
b52c680a	19	* include SquirrelMail string and generic functions
432db2fc	20	* script needs OneTimePadDecrypt() (functions/strings.php)
b52c680a	21	* and sqgetGlobalVar() (functions/global.php)
432db2fc	22	*/
b52c680a	23	include_once(SM_PATH.'functions/global.php');
432db2fc	24	include_once(SM_PATH.'functions/strings.php');
	25
	26	/**
	27	* converts hex string to ip address
	28	* @param string $hex hexadecimal string created with squirrelmail ip2hex
	29	* function in delivery class.
	30	* @return string ip address
94511d23	31	* @since 1.5.1 and 1.4.5
432db2fc	32	*/
	33	function hex2ip($hex) {
	34	if (strlen($hex)==8) {
	35	$ret=hexdec(substr($hex,0,2)).'.'
	36	.hexdec(substr($hex,2,2)).'.'
	37	.hexdec(substr($hex,4,2)).'.'
	38	.hexdec(substr($hex,6,2));
	39	} elseif (strlen($hex)==32) {
b953f34f	40	$ret=substr($hex,0,4).':'
	41	.substr($hex,4,4).':'
	42	.substr($hex,8,4).':'
	43	.substr($hex,12,4).':'
	44	.substr($hex,16,4).':'
	45	.substr($hex,20,4).':'
	46	.substr($hex,24,4).':'
	47	.substr($hex,28,4);
432db2fc	48	} else {
	49	$ret=$hex;
	50	}
	51	return $ret;
	52	}
	53
	54	/** create page headers */
	55	header('Content-Type: text/html');
	56
151562a7	57	echo '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"'."\n"
151562a7	58	.' "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">'
432db2fc	59	."\n<head>\n<meta name=\"robots\" content=\"noindex,nofollow\">\n"
	60	."</head><body>";
	61
	62	if (sqgetGlobalVar('submit',$submit,SQ_POST)) {
	63	if (! sqgetGlobalVar('secret',$secret,SQ_POST) \|\|
	64	empty($secret))
	65	echo "<p>You must enter encryption key.</p>\n";
	66	if (! sqgetGlobalVar('enc_string',$enc_string,SQ_POST) \|\|
	67	empty($enc_string))
	68	echo "<p>You must enter encrypted string.</p>\n";
	69
	70	if (isset($enc_string) && ! base64_decode($enc_string)) {
	71	echo "<p>Encrypted string should be BASE64 encoded.<br />\n"
	72	."Please enter all characters that are listed after header name.</p>\n";
	73	} elseif (isset($secret)) {
	74	$string=OneTimePadDecrypt($enc_string,base64_encode($secret));
	75
	76	if (sqgetGlobalVar('ip_addr',$is_addr,SQ_POST)) {
	77	$string=hex2ip($string);
	78	}
	79	echo "<p>Decoded string: ".$string."</p>\n";
	80	}
	81	echo "<hr />";
	82	}
	83	?>
372bcbb8	84	<form action="" method="post">
432db2fc	85	<p>
	86	Secret key: <input type="password" name="secret"><br />
	87	Encrypted string: <input type="text" name="enc_string"><br />
	88	Check, if it is an address string: <input type="checkbox" name="ip_addr" /><br />
	89	<button type="submit" name="submit" value="submit">Submit</button>
	90	</p>
	91	</form>
b953f34f	92	</body></html>