6 * Copyright (c) 1999-2003 The SquirrelMail Project Team
7 * Licensed under the GNU GPL. For full terms see the file COPYING.
9 * This implements all functions that do general imap functions.
14 function imap_utf7_encode_local($s) {
15 global $languages, $squirrelmail_language;
17 if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
18 function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) {
19 return $languages[$squirrelmail_language]['XTRA_CODE']('utf7-imap_encode', $s);
22 global $default_charset;
25 if ( ! $default_charset == "iso-8859-1" ) {
26 // Allows mbstring functions only with iso-8859-*, utf-8 and
27 // iso-2022-jp (Japanese)
28 // koi8-r and gb2312 can be added only in php 4.3+
29 if ( preg_match("/iso-8859-/i",$default_charset) ||
30 preg_match("/utf-8/i",$default_charset) ||
31 preg_match("/iso-2022-jp/i",$default_charset) ) {
32 if(function_exists("mb_convert_encoding")) {
33 return mb_convert_encoding($s, "UTF7-IMAP", $default_charset);
38 // Later code works only for ISO-8859-1
40 $b64_s = ''; // buffer for substring to be base64-encoded
41 $utf7_s = ''; // imap-utf7-encoded string
42 for ($i = 0; $i < strlen($s); $i++
) {
45 if ((($ord_c >= 0x20) and ($ord_c <= 0x25)) or
46 (($ord_c >= 0x27) and ($ord_c <= 0x7e))) {
48 $utf7_s = $utf7_s . '&' . encodeBASE64($b64_s) .'-';
51 $utf7_s = $utf7_s . $c;
52 } elseif ($ord_c == 0x26) {
54 $utf7_s = $utf7_s . '&' . encodeBASE64($b64_s) . '-';
57 $utf7_s = $utf7_s . '&-';
59 $b64_s = $b64_s . chr(0) . $c;
66 $utf7_s = $utf7_s . '&' . encodeBASE64($b64_s) . '-';
72 function imap_utf7_decode_local($s) {
73 global $languages, $squirrelmail_language;
75 if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
76 function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) {
77 return $languages[$squirrelmail_language]['XTRA_CODE']('utf7-imap_decode', $s);
80 global $default_charset;
83 if ( ! $default_charset == "iso-8859-1" ) {
84 // Allows mbstring functions only with iso-8859-*, utf-8 and
85 // iso-2022-jp (Japanese)
86 // koi8-r and gb2312 can be added only in php 4.3+
87 if ( preg_match("/iso-8859-/i",$default_charset) ||
88 preg_match("/utf-8/i",$default_charset) ||
89 preg_match("/iso-2022-jp/i",$default_charset) ) {
90 if(function_exists("mb_convert_encoding")) {
91 return mb_convert_encoding($s, $default_charset, "UTF7-IMAP");
96 // Later code works only for ISO-8859-1
100 for ($i = 0, $len = strlen($s); $i < $len; $i++
) {
102 if (strlen($b64_s) > 0) {
105 $iso_8859_1_s = $iso_8859_1_s . '&';
107 $iso_8859_1_s = $iso_8859_1_s .
108 decodeBASE64(substr($b64_s, 1));
112 $b64_s = $b64_s . $c;
118 $iso_8859_1_s = $iso_8859_1_s . $c;
122 return $iso_8859_1_s;
125 function encodeBASE64($s) {
126 $B64Chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+,';
127 $p = 0; // phase: 1 / 2 / 3 / 1 / 2 / 3...
128 $e = ''; // base64-encoded string
129 //foreach($s as $c) {
130 for ($i = 0; $i < strlen($s); $i++
) {
133 $e = $e . substr($B64Chars, ((ord($c) & 252) >> 2), 1);
137 $e = $e . $B64Chars[($t << 4) +
((ord($c) & 240) >> 4)];
141 $e = $e . $B64Chars[($t << 2) +
((ord($c) & 192) >> 6)];
142 $e = $e . $B64Chars[ord($c) & 63];
150 $e = $e . $B64Chars[$t << 4];
152 $e = $e . $B64Chars[$t << 2];
157 function decodeBASE64($s) {
159 'A' => 0, 'B' => 1, 'C' => 2, 'D' => 3, 'E' => 4, 'F' => 5,
160 'G' => 6, 'H' => 7, 'I' => 8, 'J' => 9, 'K' => 10, 'L' => 11,
161 'M' => 12, 'N' => 13, 'O' => 14, 'P' => 15, 'Q' => 16, 'R' => 17,
162 'S' => 18, 'T' => 19, 'U' => 20, 'V' => 21, 'W' => 22, 'X' => 23,
163 'Y' => 24, 'Z' => 25,
164 'a' => 26, 'b' => 27, 'c' => 28, 'd' => 29, 'e' => 30, 'f' => 31,
165 'g' => 32, 'h' => 33, 'i' => 34, 'j' => 35, 'k' => 36, 'l' => 37,
166 'm' => 38, 'n' => 39, 'o' => 40, 'p' => 41, 'q' => 42, 'r' => 43,
167 's' => 44, 't' => 45, 'u' => 46, 'v' => 47, 'w' => 48, 'x' => 49,
168 'y' => 50, 'z' => 51,
169 '0' => 52, '1' => 53, '2' => 54, '3' => 55, '4' => 56, '5' => 57,
170 '6' => 58, '7' => 59, '8' => 60, '9' => 61, '+' => 62, ',' => 63
174 $unicodeNullByteToggle = 0;
175 for ($i = 0, $len = strlen($s); $i < $len; $i++
) {
181 if ($unicodeNullByteToggle) {
182 $d = $d . chr(($t << 2) +
(($B64Values[$c] & 48) >> 4));
183 $unicodeNullByteToggle = 0;
185 $unicodeNullByteToggle = 1;
187 $t = ($B64Values[$c] & 15);
190 if ($unicodeNullByteToggle) {
191 $d = $d . chr(($t << 4) +
(($B64Values[$c] & 60) >> 2));
192 $unicodeNullByteToggle = 0;
194 $unicodeNullByteToggle = 1;
196 $t = ($B64Values[$c] & 3);
199 if ($unicodeNullByteToggle) {
200 $d = $d . chr(($t << 6) +
$B64Values[$c]);
201 $unicodeNullByteToggle = 0;
203 $unicodeNullByteToggle = 1;
205 $t = ($B64Values[$c] & 3);