ID: 32586
User updated by: mschering at intermesh dot nl
Reported By: mschering at intermesh dot nl
Status: Open
Bug Type: IMAP related
Operating System: Linux 2.6
PHP Version: 4.3.10
New Comment:
It seems to be related to base64_encode and base64_decode because these
functions work but only work with the custom base64 functions:
/**
* encode folder name to utf7-imap
*
* If mbstring functions do not support charset used by translation,
falls back to iso-8859-1
* @param string $string folder name
* @return string utf7-imap encoded folder name
*/
function imap_utf7_encode($string) {
// works only for ISO-8859-1
$b64_s = ''; // buffer for substring to be base64-encoded
$utf7_s = ''; // imap-utf7-encoded string
for ($i = 0; $i < strlen($string); $i++) {
$c = $string[$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 $string folder name in utf7-imap
* @return string folder name in charset used by translation
*/
function imap_utf7_decode($string) {
// works only for ISO-8859-1
$b64_s = '';
$iso_8859_1_s = '';
for ($i = 0, $len = strlen($string); $i < $len; $i++) {
$c = $string[$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 $s string
* @return string base64 encoded string
*/
function encodeBASE64($string) {
$B64Chars =
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+,';
$p = 0; // phase: 1 / 2 / 3 / 1 / 2 / 3...
$e = ''; // base64-encoded string
//foreach($s as $c) {
for ($i = 0; $i < strlen($string); $i++) {
$c = $string[$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 $s base64 encoded string
* @return string decoded string
*/
function decodeBASE64($string) {
$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, $len = strlen($string); $i < $len; $i++) {
$c = $string[$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;
}
Previous Comments:
------------------------------------------------------------------------
[2005-04-05 12:54:15] mschering at intermesh dot nl
Description:
------------
These functions do not work:
/**
* Replacement for $this->utf7_encode because it expects the
text to
be in
* ISO-8859-1 format while GO uses UTF-8.
*
* @access public
* @param $text The UTF-8 encoded text to encode in UTF-7
* @return string UTF-7 encoded text
*/
function utf7_encode($text)
{
return imap_utf7_encode(utf8_decode($text));
}
/**
* Replacement for $this->utf7_decode becuase it returns the text in
* ISO-8859-1 format while GO uses UTF-8.
*
* @access public
* @param $text The UTF-7 text to encode to UTF-8
* @return string UTF-8 encoded text
*/
function utf7_decode($text)
{
return utf8_encode(imap_utf7_decode($text));
}
}
Reproduce code:
---------------
Use these functions and encode UTF-8 strings with characters like ���
etc in it and it will produce garbage.
I use these in my mail client and it works but other mail clients do
not see the folders correctly.
Expected result:
----------------
Other mail clients should see the folder names correctly
Actual result:
--------------
The folder names have strange characters in other mail clients
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=32586&edit=1
