<?php
/**
- * imap_utf7_local.php
- *
- * Copyright (c) 1999-2003 The SquirrelMail Project Team
- * Licensed under the GNU GPL. For full terms see the file COPYING.
+ * functions/imap_utf7_local.php - utf7-imap functions
*
* This implements all functions that do imap UTF7 conversions.
+ * Before 1.3.2 functions were stored in imap_utf7_decode_local.php and
+ * imap_utf7_encode_local.php files.
*
- * $Id$
+ * @copyright 1999-2020 The SquirrelMail Project Team
+ * @license http://opensource.org/licenses/gpl-license.php GNU Public License
+ * @version $Id$
* @package squirrelmail
+ * @subpackage imap
+ * @since 1.3.2
*/
/**
- * @param string $str
- * @param string $to_encoding
- * @param string $from_encoding
- * @param string $default_charset
- * @return string
+ * Function that uses php mbstring functions to convert from and to utf7-imap charset
+ *
+ * Since 1.5.1 list of supported charsets depends sq_mb_list_encoding function.
+ * Before that it was hardcoded to iso-8859-x, utf-8 and iso-2022-jp.
+ * @param string $str folder name
+ * @param string $to_encoding name of resulting charset
+ * @param string $from_encoding name of original charset
+ * @param string $default_charset default charset used by translation.
+ * @return string encoded folder name or ''
+ * @since 1.4.2
*/
-function sqimap_mb_convert_encoding($str, $to_encoding, $from_encoding, $default_charset)
-{
- // Allows mbstring functions only with iso-8859-*, utf-8 and
- // iso-2022-jp (Japanese)
- // koi8-r and gb2312 can be added only in php 4.3+
- if ( stristr($default_charset, 'iso-8859-') ||
- stristr($default_charset, 'utf-8') ||
- stristr($default_charset, 'iso-2022-jp') ) {
- if (function_exists('mb_convert_encoding')) {
- return mb_convert_encoding($str, $to_encoding, $from_encoding);
+function sqimap_mb_convert_encoding($str, $to_encoding, $from_encoding, $default_charset) {
+ $supported_encodings=sq_mb_list_encodings();
+ if ( in_array(strtolower($default_charset),$supported_encodings) &&
+ function_exists('mb_convert_encoding')) {
+ return mb_convert_encoding($str, $to_encoding, $from_encoding);
}
- }
- return '';
+ return '';
}
+/**
+ * encode folder name to utf7-imap
+ *
+ * If mbstring functions do not support charset used by translation, falls back to iso-8859-1
+ * @param string $s folder name
+ * @return string utf7-imap encoded folder name
+ * @since 1.2.7
+ */
function imap_utf7_encode_local($s) {
global $languages, $squirrelmail_language;
-
+
if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
- function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) {
- return $languages[$squirrelmail_language]['XTRA_CODE']('utf7-imap_encode', $s);
+ function_exists($languages[$squirrelmail_language]['XTRA_CODE'].'_utf7_imap_encode')) {
+ return call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_utf7_imap_encode', $s);
}
- if ($s == '') //If empty, don't bother
- return '';
+ if ($s == '') //If empty, don't bother
+ return '';
global $default_charset;
- set_my_charset(); //must be called before using $default_charset
+ set_my_charset(); //must be called before using $default_charset
if ((strtolower($default_charset) != 'iso-8859-1') && ($default_charset != '')) {
- $utf7_s = sqimap_mb_convert_encoding($s, 'UTF7-IMAP', $default_charset, $default_charset);
- if ($utf7_s != '')
- return $utf7_s;
+ $utf7_s = sqimap_mb_convert_encoding($s, 'UTF7-IMAP', $default_charset, $default_charset);
+ if ($utf7_s != '')
+ return $utf7_s;
}
- // Later code works only for ISO-8859-1
-
- $b64_s = ''; // buffer for substring to be base64-encoded
- $utf7_s = ''; // imap-utf7-encoded string
- for ($i = 0; $i < strlen($s); $i++) {
- $c = $s[$i];
- $ord_c = ord($c);
- if ((($ord_c >= 0x20) and ($ord_c <= 0x25)) or
- (($ord_c >= 0x27) and ($ord_c <= 0x7e))) {
- if ($b64_s) {
- $utf7_s = $utf7_s . '&' . encodeBASE64($b64_s) .'-';
- $b64_s = '';
- }
- $utf7_s = $utf7_s . $c;
- } elseif ($ord_c == 0x26) {
- if ($b64_s) {
- $utf7_s = $utf7_s . '&' . encodeBASE64($b64_s) . '-';
- $b64_s = '';
- }
- $utf7_s = $utf7_s . '&-';
- } else {
- $b64_s = $b64_s . chr(0) . $c;
- }
- }
- //
- // flush buffer
- //
- if ($b64_s) {
- $utf7_s = $utf7_s . '&' . encodeBASE64($b64_s) . '-';
- $b64_s = '';
- }
- return $utf7_s;
+ // Later code works only for ISO-8859-1
+
+ $b64_s = ''; // buffer for substring to be base64-encoded
+ $utf7_s = ''; // imap-utf7-encoded string
+ for ($i = 0; $i < strlen($s); $i++) {
+ $c = $s[$i];
+ $ord_c = ord($c);
+ if ((($ord_c >= 0x20) and ($ord_c <= 0x25)) or
+ (($ord_c >= 0x27) and ($ord_c <= 0x7e))) {
+ if ($b64_s) {
+ $utf7_s = $utf7_s . '&' . encodeBASE64($b64_s) .'-';
+ $b64_s = '';
+ }
+ $utf7_s = $utf7_s . $c;
+ } elseif ($ord_c == 0x26) {
+ if ($b64_s) {
+ $utf7_s = $utf7_s . '&' . encodeBASE64($b64_s) . '-';
+ $b64_s = '';
+ }
+ $utf7_s = $utf7_s . '&-';
+ } else {
+ $b64_s = $b64_s . chr(0) . $c;
+ }
+ }
+ //
+ // flush buffer
+ //
+ if ($b64_s) {
+ $utf7_s = $utf7_s . '&' . encodeBASE64($b64_s) . '-';
+ $b64_s = '';
+ }
+ return $utf7_s;
}
+/**
+ * converts folder name from utf7-imap to charset used by translation
+ *
+ * If mbstring functions do not support charset used by translation, falls back to iso-8859-1
+ * @param string $s folder name in utf7-imap
+ * @return string folder name in charset used by translation
+ * @since 1.2.7
+ */
function imap_utf7_decode_local($s) {
global $languages, $squirrelmail_language;
-
+
if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
- function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) {
- return $languages[$squirrelmail_language]['XTRA_CODE']('utf7-imap_decode', $s);
+ function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_utf7_imap_decode')) {
+ return call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_utf7_imap_decode', $s);
}
- if ($s == '') //If empty, don't bother
- return '';
+ if ($s == '') //If empty, don't bother
+ return '';
global $default_charset;
- set_my_charset(); //must be called before using $default_charset
+ set_my_charset(); //must be called before using $default_charset
if ((strtolower($default_charset) != 'iso-8859-1') && ($default_charset != '')) {
- $utf7_s = sqimap_mb_convert_encoding($s, $default_charset, 'UTF7-IMAP', $default_charset);
- if ($utf7_s != '')
- return $utf7_s;
+ $utf7_s = sqimap_mb_convert_encoding($s, $default_charset, 'UTF7-IMAP', $default_charset);
+ if ($utf7_s != '')
+ return $utf7_s;
}
// Later code works only for ISO-8859-1
-
- $b64_s = '';
- $iso_8859_1_s = '';
- for ($i = 0, $len = strlen($s); $i < $len; $i++) {
- $c = $s[$i];
- if (strlen($b64_s) > 0) {
- if ($c == '-') {
- if ($b64_s == '&') {
- $iso_8859_1_s = $iso_8859_1_s . '&';
- } else {
- $iso_8859_1_s = $iso_8859_1_s .
- decodeBASE64(substr($b64_s, 1));
- }
- $b64_s = '';
- } else {
- $b64_s = $b64_s . $c;
- }
- } else {
- if ($c == '&') {
- $b64_s = '&';
- } else {
- $iso_8859_1_s = $iso_8859_1_s . $c;
- }
- }
- }
- return $iso_8859_1_s;
-}
+ $b64_s = '';
+ $iso_8859_1_s = '';
+ for ($i = 0, $len = strlen($s); $i < $len; $i++) {
+ $c = $s[$i];
+ if (strlen($b64_s) > 0) {
+ if ($c == '-') {
+ if ($b64_s == '&') {
+ $iso_8859_1_s = $iso_8859_1_s . '&';
+ } else {
+ $iso_8859_1_s = $iso_8859_1_s .
+ decodeBASE64(substr($b64_s, 1));
+ }
+ $b64_s = '';
+ } else {
+ $b64_s = $b64_s . $c;
+ }
+ } else {
+ if ($c == '&') {
+ $b64_s = '&';
+ } else {
+ $iso_8859_1_s = $iso_8859_1_s . $c;
+ }
+ }
+ }
+ return $iso_8859_1_s;
+}
+/**
+ * Converts string to base64
+ * @param string $s string
+ * @return string base64 encoded string
+ * @since 1.2.7
+ */
function encodeBASE64($s) {
- $B64Chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+,';
- $p = 0; // phase: 1 / 2 / 3 / 1 / 2 / 3...
- $e = ''; // base64-encoded string
- //foreach($s as $c) {
- for ($i = 0; $i < strlen($s); $i++) {
- $c = $s[$i];
- if ($p == 0) {
- $e = $e . substr($B64Chars, ((ord($c) & 252) >> 2), 1);
- $t = (ord($c) & 3);
- $p = 1;
- } elseif ($p == 1) {
- $e = $e . $B64Chars[($t << 4) + ((ord($c) & 240) >> 4)];
- $t = (ord($c) & 15);
- $p = 2;
- } elseif ($p == 2) {
- $e = $e . $B64Chars[($t << 2) + ((ord($c) & 192) >> 6)];
- $e = $e . $B64Chars[ord($c) & 63];
- $p = 0;
- }
- }
- //
- // flush buffer
- //
- if ($p == 1) {
- $e = $e . $B64Chars[$t << 4];
- } elseif ($p == 2) {
- $e = $e . $B64Chars[$t << 2];
- }
- return $e;
+ $B64Chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+,';
+ $p = 0; // phase: 1 / 2 / 3 / 1 / 2 / 3...
+ $e = ''; // base64-encoded string
+ //foreach($s as $c) {
+ for ($i = 0; $i < strlen($s); $i++) {
+ $c = $s[$i];
+ if ($p == 0) {
+ $e = $e . substr($B64Chars, ((ord($c) & 252) >> 2), 1);
+ $t = (ord($c) & 3);
+ $p = 1;
+ } elseif ($p == 1) {
+ $e = $e . $B64Chars[($t << 4) + ((ord($c) & 240) >> 4)];
+ $t = (ord($c) & 15);
+ $p = 2;
+ } elseif ($p == 2) {
+ $e = $e . $B64Chars[($t << 2) + ((ord($c) & 192) >> 6)];
+ $e = $e . $B64Chars[ord($c) & 63];
+ $p = 0;
+ }
+ }
+ //
+ // flush buffer
+ //
+ if ($p == 1) {
+ $e = $e . $B64Chars[$t << 4];
+ } elseif ($p == 2) {
+ $e = $e . $B64Chars[$t << 2];
+ }
+ return $e;
}
+/**
+ * Converts string from base64
+ * @param string $s base64 encoded string
+ * @return string decoded string
+ * @since 1.2.7
+ */
function decodeBASE64($s) {
- $B64Values = array(
- 'A' => 0, 'B' => 1, 'C' => 2, 'D' => 3, 'E' => 4, 'F' => 5,
- 'G' => 6, 'H' => 7, 'I' => 8, 'J' => 9, 'K' => 10, 'L' => 11,
- 'M' => 12, 'N' => 13, 'O' => 14, 'P' => 15, 'Q' => 16, 'R' => 17,
- 'S' => 18, 'T' => 19, 'U' => 20, 'V' => 21, 'W' => 22, 'X' => 23,
- 'Y' => 24, 'Z' => 25,
- 'a' => 26, 'b' => 27, 'c' => 28, 'd' => 29, 'e' => 30, 'f' => 31,
- 'g' => 32, 'h' => 33, 'i' => 34, 'j' => 35, 'k' => 36, 'l' => 37,
- 'm' => 38, 'n' => 39, 'o' => 40, 'p' => 41, 'q' => 42, 'r' => 43,
- 's' => 44, 't' => 45, 'u' => 46, 'v' => 47, 'w' => 48, 'x' => 49,
- 'y' => 50, 'z' => 51,
- '0' => 52, '1' => 53, '2' => 54, '3' => 55, '4' => 56, '5' => 57,
- '6' => 58, '7' => 59, '8' => 60, '9' => 61, '+' => 62, ',' => 63
- );
- $p = 0;
- $d = '';
- $unicodeNullByteToggle = 0;
- for ($i = 0, $len = strlen($s); $i < $len; $i++) {
- $c = $s[$i];
- if ($p == 0) {
- $t = $B64Values[$c];
- $p = 1;
- } elseif ($p == 1) {
- if ($unicodeNullByteToggle) {
- $d = $d . chr(($t << 2) + (($B64Values[$c] & 48) >> 4));
- $unicodeNullByteToggle = 0;
- } else {
- $unicodeNullByteToggle = 1;
- }
- $t = ($B64Values[$c] & 15);
- $p = 2;
- } elseif ($p == 2) {
- if ($unicodeNullByteToggle) {
- $d = $d . chr(($t << 4) + (($B64Values[$c] & 60) >> 2));
- $unicodeNullByteToggle = 0;
- } else {
- $unicodeNullByteToggle = 1;
- }
- $t = ($B64Values[$c] & 3);
- $p = 3;
- } elseif ($p == 3) {
- if ($unicodeNullByteToggle) {
- $d = $d . chr(($t << 6) + $B64Values[$c]);
- $unicodeNullByteToggle = 0;
- } else {
- $unicodeNullByteToggle = 1;
- }
- $t = ($B64Values[$c] & 3);
- $p = 0;
- }
- }
- return $d;
+ $B64Values = array(
+ 'A' => 0, 'B' => 1, 'C' => 2, 'D' => 3, 'E' => 4, 'F' => 5,
+ 'G' => 6, 'H' => 7, 'I' => 8, 'J' => 9, 'K' => 10, 'L' => 11,
+ 'M' => 12, 'N' => 13, 'O' => 14, 'P' => 15, 'Q' => 16, 'R' => 17,
+ 'S' => 18, 'T' => 19, 'U' => 20, 'V' => 21, 'W' => 22, 'X' => 23,
+ 'Y' => 24, 'Z' => 25,
+ 'a' => 26, 'b' => 27, 'c' => 28, 'd' => 29, 'e' => 30, 'f' => 31,
+ 'g' => 32, 'h' => 33, 'i' => 34, 'j' => 35, 'k' => 36, 'l' => 37,
+ 'm' => 38, 'n' => 39, 'o' => 40, 'p' => 41, 'q' => 42, 'r' => 43,
+ 's' => 44, 't' => 45, 'u' => 46, 'v' => 47, 'w' => 48, 'x' => 49,
+ 'y' => 50, 'z' => 51,
+ '0' => 52, '1' => 53, '2' => 54, '3' => 55, '4' => 56, '5' => 57,
+ '6' => 58, '7' => 59, '8' => 60, '9' => 61, '+' => 62, ',' => 63
+ );
+ $p = 0;
+ $d = '';
+ $unicodeNullByteToggle = 0;
+ for ($i = 0, $len = strlen($s); $i < $len; $i++) {
+ $c = $s[$i];
+ if ($p == 0) {
+ $t = $B64Values[$c];
+ $p = 1;
+ } elseif ($p == 1) {
+ if ($unicodeNullByteToggle) {
+ $d = $d . chr(($t << 2) + (($B64Values[$c] & 48) >> 4));
+ $unicodeNullByteToggle = 0;
+ } else {
+ $unicodeNullByteToggle = 1;
+ }
+ $t = ($B64Values[$c] & 15);
+ $p = 2;
+ } elseif ($p == 2) {
+ if ($unicodeNullByteToggle) {
+ $d = $d . chr(($t << 4) + (($B64Values[$c] & 60) >> 2));
+ $unicodeNullByteToggle = 0;
+ } else {
+ $unicodeNullByteToggle = 1;
+ }
+ $t = ($B64Values[$c] & 3);
+ $p = 3;
+ } elseif ($p == 3) {
+ if ($unicodeNullByteToggle) {
+ $d = $d . chr(($t << 6) + $B64Values[$c]);
+ $unicodeNullByteToggle = 0;
+ } else {
+ $unicodeNullByteToggle = 1;
+ }
+ $t = ($B64Values[$c] & 3);
+ $p = 0;
+ }
+ }
+ return $d;
}
-
-?>
projects / squirrelmail.git / blobdiff