missing sprintf around string
[squirrelmail.git] / plugins / mail_fetch / functions.php
CommitLineData
d622d38a 1<?php
2
d3c89357 3 /**
4 ** mail_fetch/functions.php
5 **
6c84ba1e 6 ** Copyright (c) 1999-2005 The SquirrelMail Project Team
d3c89357 7 ** Licensed under the GNU GPL. For full terms see the file COPYING.
8 **
9 ** Functions for the mailfetch plugin.
10 **
11 ** Original code from LexZEUS <lexzeus@mifinca.com>
12 ** and josh@superfork.com (extracted from php manual)
13 ** Adapted for MailFetch by Philippe Mingo <mingo@rotedic.com>
14 **
15 ** $Id$
ea5f4b8e 16 * @package plugins
17 * @subpackage mail_fetch
d3c89357 18 **/
d622d38a 19
ea5f4b8e 20 /**
21 * hex2bin - document me
22 */
d622d38a 23 function hex2bin( $data ) {
24
25 /* Original code by josh@superfork.com */
26
27 $len = strlen($data);
9af8c23a 28 $newdata = '';
d622d38a 29 for( $i=0; $i < $len; $i += 2 ) {
30 $newdata .= pack( "C", hexdec( substr( $data, $i, 2) ) );
31 }
32 return $newdata;
33 }
34
35 function mf_keyED( $txt ) {
36
37 global $MF_TIT;
38
39 if( !isset( $MF_TIT ) ) {
40 $MF_TIT = "MailFetch Secure for SquirrelMail 1.x";
41 }
42
43 $encrypt_key = md5( $MF_TIT );
44 $ctr = 0;
45 $tmp = "";
46 for( $i = 0; $i < strlen( $txt ); $i++ ) {
47 if( $ctr == strlen( $encrypt_key ) ) $ctr=0;
48 $tmp.= substr( $txt, $i, 1 ) ^ substr( $encrypt_key, $ctr, 1 );
49 $ctr++;
50 }
51 return $tmp;
52 }
53
54 function encrypt( $txt ) {
55
56 srand( (double) microtime() * 1000000 );
57 $encrypt_key = md5( rand( 0, 32000 ) );
58 $ctr = 0;
59 $tmp = "";
60 for( $i = 0; $i < strlen( $txt ); $i++ ) {
61 if ($ctr==strlen($encrypt_key)) $ctr=0;
62 $tmp.= substr($encrypt_key,$ctr,1) .
63 (substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1));
64 $ctr++;
65 }
66 return bin2hex( mf_keyED( $tmp ) );
67
68 }
69
70 function decrypt( $txt ) {
71
72 $txt = mf_keyED( hex2bin( $txt ) );
73 $tmp = '';
74 for ( $i=0; $i < strlen( $txt ); $i++ ) {
75 $md5 = substr( $txt, $i, 1 );
76 $i++;
77 $tmp.= ( substr( $txt, $i, 1 ) ^ $md5 );
78 }
79 return $tmp;
80 }
81
91e0dccc 82?>