| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * mail_fetch/functions.php |
| 5 | * |
| 6 | * Copyright (c) 1999-2005 The SquirrelMail Project Team |
| 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 | * @version $Id$ |
| 16 | * @package plugins |
| 17 | * @subpackage mail_fetch |
| 18 | */ |
| 19 | |
| 20 | /** declare plugin globals */ |
| 21 | global $mail_fetch_allow_unsubscribed; |
| 22 | |
| 23 | /** |
| 24 | * Controls use of unsubscribed folders in plugin |
| 25 | * @global boolean $mail_fetch_allow_unsubscribed |
| 26 | * @since 1.5.1 and 1.4.5 |
| 27 | */ |
| 28 | $mail_fetch_allow_unsubscribed = false; |
| 29 | |
| 30 | /** |
| 31 | * hex2bin - document me |
| 32 | */ |
| 33 | function hex2bin( $data ) { |
| 34 | |
| 35 | /* Original code by josh@superfork.com */ |
| 36 | |
| 37 | $len = strlen($data); |
| 38 | $newdata = ''; |
| 39 | for( $i=0; $i < $len; $i += 2 ) { |
| 40 | $newdata .= pack( "C", hexdec( substr( $data, $i, 2) ) ); |
| 41 | } |
| 42 | return $newdata; |
| 43 | } |
| 44 | |
| 45 | function mf_keyED( $txt ) { |
| 46 | |
| 47 | global $MF_TIT; |
| 48 | |
| 49 | if( !isset( $MF_TIT ) ) { |
| 50 | $MF_TIT = "MailFetch Secure for SquirrelMail 1.x"; |
| 51 | } |
| 52 | |
| 53 | $encrypt_key = md5( $MF_TIT ); |
| 54 | $ctr = 0; |
| 55 | $tmp = ""; |
| 56 | for( $i = 0; $i < strlen( $txt ); $i++ ) { |
| 57 | if( $ctr == strlen( $encrypt_key ) ) $ctr=0; |
| 58 | $tmp.= substr( $txt, $i, 1 ) ^ substr( $encrypt_key, $ctr, 1 ); |
| 59 | $ctr++; |
| 60 | } |
| 61 | return $tmp; |
| 62 | } |
| 63 | |
| 64 | function encrypt( $txt ) { |
| 65 | |
| 66 | srand( (double) microtime() * 1000000 ); |
| 67 | $encrypt_key = md5( rand( 0, 32000 ) ); |
| 68 | $ctr = 0; |
| 69 | $tmp = ""; |
| 70 | for( $i = 0; $i < strlen( $txt ); $i++ ) { |
| 71 | if ($ctr==strlen($encrypt_key)) $ctr=0; |
| 72 | $tmp.= substr($encrypt_key,$ctr,1) . |
| 73 | (substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1)); |
| 74 | $ctr++; |
| 75 | } |
| 76 | return bin2hex( mf_keyED( $tmp ) ); |
| 77 | |
| 78 | } |
| 79 | |
| 80 | function decrypt( $txt ) { |
| 81 | |
| 82 | $txt = mf_keyED( hex2bin( $txt ) ); |
| 83 | $tmp = ''; |
| 84 | for ( $i=0; $i < strlen( $txt ); $i++ ) { |
| 85 | $md5 = substr( $txt, $i, 1 ); |
| 86 | $i++; |
| 87 | $tmp.= ( substr( $txt, $i, 1 ) ^ $md5 ); |
| 88 | } |
| 89 | return $tmp; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * check mail folder |
| 94 | * @param stream $imap_stream imap connection resource |
| 95 | * @param string $imap_folder imap folder name |
| 96 | * @return boolean true, when folder can be used to store messages. |
| 97 | * @since 1.5.1 and 1.4.5 |
| 98 | */ |
| 99 | function mail_fetch_check_folder($imap_stream,$imap_folder) { |
| 100 | global $mail_fetch_allow_unsubscribed; |
| 101 | |
| 102 | // check if folder is subscribed or only exists. |
| 103 | if (sqimap_mailbox_is_subscribed($imap_stream,$imap_folder)) { |
| 104 | $ret = true; |
| 105 | } elseif ($mail_fetch_allow_unsubscribed && sqimap_mailbox_exists($imap_stream,$imap_folder)) { |
| 106 | $ret = true; |
| 107 | } else { |
| 108 | $ret = false; |
| 109 | } |
| 110 | |
| 111 | // make sure that folder can store messages |
| 112 | if ($ret && mail_fetch_check_noselect($imap_stream,$imap_folder)) { |
| 113 | $ret = false; |
| 114 | } |
| 115 | |
| 116 | return $ret; |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Checks if folder is noselect (can't store messages) |
| 121 | * |
| 122 | * Function does not check if folder subscribed. |
| 123 | * @param stream $imap_stream imap connection resource |
| 124 | * @param string $imap_folder imap folder name |
| 125 | * @return boolean true, when folder has noselect flag. false in any other case. |
| 126 | * @since 1.5.1 and 1.4.5 |
| 127 | */ |
| 128 | function mail_fetch_check_noselect($imap_stream,$imap_folder) { |
| 129 | $boxes=sqimap_mailbox_list($imap_stream); |
| 130 | foreach($boxes as $box) { |
| 131 | if ($box['unformatted']==$imap_folder) { |
| 132 | return (bool) check_is_noselect($box['raw']); |
| 133 | } |
| 134 | } |
| 135 | return false; |
| 136 | } |
| 137 | ?> |