From 3412e50b54e3daac8745234e21ab6e72be0ed165 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Wed, 04 Jun 2014 11:20:33 -0400
Subject: [PATCH] Fix attachment menu structure and aria-attributes
---
program/lib/Mail/mimePart.php | 665 ++++++++++++++++++++++++++++++++++++++++++++++---------
1 files changed, 556 insertions(+), 109 deletions(-)
diff --git a/program/lib/Mail/mimePart.php b/program/lib/Mail/mimePart.php
index 644b2b6..c6e9f4a 100644
--- a/program/lib/Mail/mimePart.php
+++ b/program/lib/Mail/mimePart.php
@@ -131,6 +131,7 @@
*/
var $_eol = "\r\n";
+
/**
* Constructor.
*
@@ -141,18 +142,22 @@
* content_type - The content type for this part eg multipart/mixed
* encoding - The encoding to use, 7bit, 8bit,
* base64, or quoted-printable
+ * charset - Content character set
* cid - Content ID to apply
* disposition - Content disposition, inline or attachment
- * dfilename - Filename parameter for content disposition
+ * filename - Filename parameter for content disposition
* description - Content description
- * charset - Character set to use
- * name_encoding - Encoding for attachment name (Content-Type)
+ * name_encoding - Encoding of the attachment name (Content-Type)
* By default filenames are encoded using RFC2231
* Here you can set RFC2047 encoding (quoted-printable
* or base64) instead
- * filename_encoding - Encoding for attachment filename (Content-Disposition)
+ * filename_encoding - Encoding of the attachment filename (Content-Disposition)
* See 'name_encoding'
+ * headers_charset - Charset of the headers e.g. filename, description.
+ * If not set, 'charset' will be used
* eol - End of line sequence. Default: "\r\n"
+ * headers - Hash array with additional part headers. Array keys can be
+ * in form of <header_name>:<parameter_name>
* body_file - Location of file with part's body (instead of $body)
*
* @access public
@@ -165,14 +170,13 @@
$this->_eol = MAIL_MIMEPART_CRLF;
}
- $c_type = array();
- $c_disp = array();
+ // Additional part headers
+ if (!empty($params['headers']) && is_array($params['headers'])) {
+ $headers = $params['headers'];
+ }
+
foreach ($params as $key => $value) {
switch ($key) {
- case 'content_type':
- $c_type['type'] = $value;
- break;
-
case 'encoding':
$this->_encoding = $value;
$headers['Content-Transfer-Encoding'] = $value;
@@ -182,29 +186,6 @@
$headers['Content-ID'] = '<' . $value . '>';
break;
- case 'disposition':
- $c_disp['disp'] = $value;
- break;
-
- case 'dfilename':
- $c_disp['filename'] = $value;
- $c_type['name'] = $value;
- break;
-
- case 'description':
- $headers['Content-Description'] = $value;
- break;
-
- case 'charset':
- $c_type['charset'] = $value;
- $c_disp['charset'] = $value;
- break;
-
- case 'language':
- $c_type['language'] = $value;
- $c_disp['language'] = $value;
- break;
-
case 'location':
$headers['Content-Location'] = $value;
break;
@@ -212,44 +193,89 @@
case 'body_file':
$this->_body_file = $value;
break;
- }
- }
- // Content-Type
- if (isset($c_type['type'])) {
- $headers['Content-Type'] = $c_type['type'];
- if (isset($c_type['name'])) {
- $headers['Content-Type'] .= ';' . $this->_eol;
- $headers['Content-Type'] .= $this->_buildHeaderParam(
- 'name', $c_type['name'],
- isset($c_type['charset']) ? $c_type['charset'] : 'US-ASCII',
- isset($c_type['language']) ? $c_type['language'] : null,
- isset($params['name_encoding']) ? $params['name_encoding'] : null
- );
- }
- if (isset($c_type['charset'])) {
- $headers['Content-Type']
- .= ';' . $this->_eol . " charset={$c_type['charset']}";
- }
- }
-
- // Content-Disposition
- if (isset($c_disp['disp'])) {
- $headers['Content-Disposition'] = $c_disp['disp'];
- if (isset($c_disp['filename'])) {
- $headers['Content-Disposition'] .= ';' . $this->_eol;
- $headers['Content-Disposition'] .= $this->_buildHeaderParam(
- 'filename', $c_disp['filename'],
- isset($c_disp['charset']) ? $c_disp['charset'] : 'US-ASCII',
- isset($c_disp['language']) ? $c_disp['language'] : null,
- isset($params['filename_encoding']) ? $params['filename_encoding'] : null
- );
+ // for backward compatibility
+ case 'dfilename':
+ $params['filename'] = $value;
+ break;
}
}
// Default content-type
- if (!isset($headers['Content-Type'])) {
- $headers['Content-Type'] = 'text/plain';
+ if (empty($params['content_type'])) {
+ $params['content_type'] = 'text/plain';
+ }
+
+ // Content-Type
+ $headers['Content-Type'] = $params['content_type'];
+ if (!empty($params['charset'])) {
+ $charset = "charset={$params['charset']}";
+ // place charset parameter in the same line, if possible
+ if ((strlen($headers['Content-Type']) + strlen($charset) + 16) <= 76) {
+ $headers['Content-Type'] .= '; ';
+ } else {
+ $headers['Content-Type'] .= ';' . $this->_eol . ' ';
+ }
+ $headers['Content-Type'] .= $charset;
+
+ // Default headers charset
+ if (!isset($params['headers_charset'])) {
+ $params['headers_charset'] = $params['charset'];
+ }
+ }
+
+ // header values encoding parameters
+ $h_charset = !empty($params['headers_charset']) ? $params['headers_charset'] : 'US-ASCII';
+ $h_language = !empty($params['language']) ? $params['language'] : null;
+ $h_encoding = !empty($params['name_encoding']) ? $params['name_encoding'] : null;
+
+
+ if (!empty($params['filename'])) {
+ $headers['Content-Type'] .= ';' . $this->_eol;
+ $headers['Content-Type'] .= $this->_buildHeaderParam(
+ 'name', $params['filename'], $h_charset, $h_language, $h_encoding
+ );
+ }
+
+ // Content-Disposition
+ if (!empty($params['disposition'])) {
+ $headers['Content-Disposition'] = $params['disposition'];
+ if (!empty($params['filename'])) {
+ $headers['Content-Disposition'] .= ';' . $this->_eol;
+ $headers['Content-Disposition'] .= $this->_buildHeaderParam(
+ 'filename', $params['filename'], $h_charset, $h_language,
+ !empty($params['filename_encoding']) ? $params['filename_encoding'] : null
+ );
+ }
+
+ // add attachment size
+ $size = $this->_body_file ? filesize($this->_body_file) : strlen($body);
+ if ($size) {
+ $headers['Content-Disposition'] .= ';' . $this->_eol . ' size=' . $size;
+ }
+ }
+
+ if (!empty($params['description'])) {
+ $headers['Content-Description'] = $this->encodeHeader(
+ 'Content-Description', $params['description'], $h_charset, $h_encoding,
+ $this->_eol
+ );
+ }
+
+ // Search and add existing headers' parameters
+ foreach ($headers as $key => $value) {
+ $items = explode(':', $key);
+ if (count($items) == 2) {
+ $header = $items[0];
+ $param = $items[1];
+ if (isset($headers[$header])) {
+ $headers[$header] .= ';' . $this->_eol;
+ }
+ $headers[$header] .= $this->_buildHeaderParam(
+ $param, $value, $h_charset, $h_language, $h_encoding
+ );
+ unset($headers[$key]);
+ }
}
// Default encoding
@@ -289,7 +315,7 @@
for ($i = 0; $i < count($this->_subparts); $i++) {
$encoded['body'] .= '--' . $boundary . $eol;
$tmp = $this->_subparts[$i]->encode();
- if (PEAR::isError($tmp)) {
+ if ($this->_isError($tmp)) {
return $tmp;
}
foreach ($tmp['headers'] as $key => $value) {
@@ -312,7 +338,7 @@
@ini_set('magic_quotes_runtime', $magic_quote_setting);
}
- if (PEAR::isError($body)) {
+ if ($this->_isError($body)) {
return $body;
}
$encoded['body'] = $body;
@@ -330,23 +356,24 @@
* Encodes and saves the email into file. File must exist.
* Data will be appended to the file.
*
- * @param string $filename Output file location
- * @param string $boundary Pre-defined boundary string
+ * @param string $filename Output file location
+ * @param string $boundary Pre-defined boundary string
+ * @param boolean $skip_head True if you don't want to save headers
*
* @return array An associative array containing message headers
* or PEAR error object
* @access public
* @since 1.6.0
*/
- function encodeToFile($filename, $boundary=null)
+ function encodeToFile($filename, $boundary=null, $skip_head=false)
{
if (file_exists($filename) && !is_writable($filename)) {
- $err = PEAR::raiseError('File is not writeable: ' . $filename);
+ $err = $this->_raiseError('File is not writeable: ' . $filename);
return $err;
}
if (!($fh = fopen($filename, 'ab'))) {
- $err = PEAR::raiseError('Unable to open file: ' . $filename);
+ $err = $this->_raiseError('Unable to open file: ' . $filename);
return $err;
}
@@ -355,7 +382,7 @@
@ini_set('magic_quotes_runtime', 0);
}
- $res = $this->_encodePartToFile($fh, $boundary);
+ $res = $this->_encodePartToFile($fh, $boundary, $skip_head);
fclose($fh);
@@ -363,19 +390,20 @@
@ini_set('magic_quotes_runtime', $magic_quote_setting);
}
- return PEAR::isError($res) ? $res : $this->_headers;
+ return $this->_isError($res) ? $res : $this->_headers;
}
/**
* Encodes given email part into file
*
- * @param string $fh Output file handle
- * @param string $boundary Pre-defined boundary string
+ * @param string $fh Output file handle
+ * @param string $boundary Pre-defined boundary string
+ * @param boolean $skip_head True if you don't want to save headers
*
* @return array True on sucess or PEAR error object
* @access private
*/
- function _encodePartToFile($fh, $boundary=null)
+ function _encodePartToFile($fh, $boundary=null, $skip_head=false)
{
$eol = $this->_eol;
@@ -384,29 +412,35 @@
$this->_headers['Content-Type'] .= ";$eol boundary=\"$boundary\"";
}
- foreach ($this->_headers as $key => $value) {
- fwrite($fh, $key . ': ' . $value . $eol);
+ if (!$skip_head) {
+ foreach ($this->_headers as $key => $value) {
+ fwrite($fh, $key . ': ' . $value . $eol);
+ }
+ $f_eol = $eol;
+ } else {
+ $f_eol = '';
}
if (count($this->_subparts)) {
for ($i = 0; $i < count($this->_subparts); $i++) {
- fwrite($fh, $eol . '--' . $boundary . $eol);
+ fwrite($fh, $f_eol . '--' . $boundary . $eol);
$res = $this->_subparts[$i]->_encodePartToFile($fh);
- if (PEAR::isError($res)) {
+ if ($this->_isError($res)) {
return $res;
}
+ $f_eol = $eol;
}
fwrite($fh, $eol . '--' . $boundary . '--' . $eol);
} else if ($this->_body) {
- fwrite($fh, $eol . $this->_getEncodedData($this->_body, $this->_encoding));
+ fwrite($fh, $f_eol . $this->_getEncodedData($this->_body, $this->_encoding));
} else if ($this->_body_file) {
- fwrite($fh, $eol);
+ fwrite($fh, $f_eol);
$res = $this->_getEncodedDataFromFile(
$this->_body_file, $this->_encoding, $fh
);
- if (PEAR::isError($res)) {
+ if ($this->_isError($res)) {
return $res;
}
}
@@ -422,16 +456,16 @@
* @param array $params The parameters for the subpart, same
* as the $params argument for constructor.
*
- * @return Mail_mimePart A reference to the part you just added. It is
+ * @return Mail_mimePart A reference to the part you just added. In PHP4, it is
* crucial if using multipart/* in your subparts that
* you use =& in your script when calling this function,
* otherwise you will not be able to add further subparts.
* @access public
*/
- function &addSubPart($body, $params)
+ function &addSubpart($body, $params)
{
- $this->_subparts[] = new Mail_mimePart($body, $params);
- return $this->_subparts[count($this->_subparts) - 1];
+ $this->_subparts[] = $part = new Mail_mimePart($body, $params);
+ return $part;
}
/**
@@ -477,12 +511,12 @@
function _getEncodedDataFromFile($filename, $encoding, $fh=null)
{
if (!is_readable($filename)) {
- $err = PEAR::raiseError('Unable to read file: ' . $filename);
+ $err = $this->_raiseError('Unable to read file: ' . $filename);
return $err;
}
if (!($fd = fopen($filename, 'rb'))) {
- $err = PEAR::raiseError('Could not open file: ' . $filename);
+ $err = $this->_raiseError('Could not open file: ' . $filename);
return $err;
}
@@ -614,7 +648,7 @@
}
/**
- * Encodes the paramater of a header.
+ * Encodes the parameter of a header.
*
* @param string $name The name of the header-parameter
* @param string $value The value of the paramter
@@ -634,8 +668,8 @@
// RFC 2045:
// value needs encoding if contains non-ASCII chars or is longer than 78 chars
if (!preg_match('#[^\x20-\x7E]#', $value)) {
- $token_regexp = '#([^\x21,\x23-\x27,\x2A,\x2B,\x2D'
- . ',\x2E,\x30-\x39,\x41-\x5A,\x5E-\x7E])#';
+ $token_regexp = '#([^\x21\x23-\x27\x2A\x2B\x2D'
+ . '\x2E\x30-\x39\x41-\x5A\x5E-\x7E])#';
if (!preg_match($token_regexp, $value)) {
// token
if (strlen($name) + strlen($value) + 3 <= $maxLength) {
@@ -657,7 +691,7 @@
// RFC2231:
$encValue = preg_replace_callback(
- '/([^\x21,\x23,\x24,\x26,\x2B,\x2D,\x2E,\x30-\x39,\x41-\x5A,\x5E-\x7E])/',
+ '/([^\x21\x23\x24\x26\x2B\x2D\x2E\x30-\x39\x41-\x5A\x5E-\x7E])/',
array($this, '_encodeReplaceCallback'), $value
);
$value = "$charset'$language'$encValue";
@@ -761,17 +795,279 @@
}
/**
- * Callback function to replace extended characters (\x80-xFF) with their
- * ASCII values (RFC2231)
+ * Encodes a header as per RFC2047
*
- * @param array $matches Preg_replace's matches array
+ * @param string $name The header name
+ * @param string $value The header data to encode
+ * @param string $charset Character set name
+ * @param string $encoding Encoding name (base64 or quoted-printable)
+ * @param string $eol End-of-line sequence. Default: "\r\n"
*
- * @return string Encoded character string
+ * @return string Encoded header data (without a name)
+ * @access public
+ * @since 1.6.1
+ */
+ function encodeHeader($name, $value, $charset='ISO-8859-1',
+ $encoding='quoted-printable', $eol="\r\n"
+ ) {
+ // Structured headers
+ $comma_headers = array(
+ 'from', 'to', 'cc', 'bcc', 'sender', 'reply-to',
+ 'resent-from', 'resent-to', 'resent-cc', 'resent-bcc',
+ 'resent-sender', 'resent-reply-to',
+ 'mail-reply-to', 'mail-followup-to',
+ 'return-receipt-to', 'disposition-notification-to',
+ );
+ $other_headers = array(
+ 'references', 'in-reply-to', 'message-id', 'resent-message-id',
+ );
+
+ $name = strtolower($name);
+
+ if (in_array($name, $comma_headers)) {
+ $separator = ',';
+ } else if (in_array($name, $other_headers)) {
+ $separator = ' ';
+ }
+
+ if (!$charset) {
+ $charset = 'ISO-8859-1';
+ }
+
+ // Structured header (make sure addr-spec inside is not encoded)
+ if (!empty($separator)) {
+ // Simple e-mail address regexp
+ $email_regexp = '([^\s<]+|("[^\r\n"]+"))@\S+';
+
+ $parts = Mail_mimePart::_explodeQuotedString($separator, $value);
+ $value = '';
+
+ foreach ($parts as $part) {
+ $part = preg_replace('/\r?\n[\s\t]*/', $eol . ' ', $part);
+ $part = trim($part);
+
+ if (!$part) {
+ continue;
+ }
+ if ($value) {
+ $value .= $separator==',' ? $separator.' ' : ' ';
+ } else {
+ $value = $name . ': ';
+ }
+
+ // let's find phrase (name) and/or addr-spec
+ if (preg_match('/^<' . $email_regexp . '>$/', $part)) {
+ $value .= $part;
+ } else if (preg_match('/^' . $email_regexp . '$/', $part)) {
+ // address without brackets and without name
+ $value .= $part;
+ } else if (preg_match('/<*' . $email_regexp . '>*$/', $part, $matches)) {
+ // address with name (handle name)
+ $address = $matches[0];
+ $word = str_replace($address, '', $part);
+ $word = trim($word);
+ // check if phrase requires quoting
+ if ($word) {
+ // non-ASCII: require encoding
+ if (preg_match('#([\x80-\xFF]){1}#', $word)) {
+ if ($word[0] == '"' && $word[strlen($word)-1] == '"') {
+ // de-quote quoted-string, encoding changes
+ // string to atom
+ $search = array("\\\"", "\\\\");
+ $replace = array("\"", "\\");
+ $word = str_replace($search, $replace, $word);
+ $word = substr($word, 1, -1);
+ }
+ // find length of last line
+ if (($pos = strrpos($value, $eol)) !== false) {
+ $last_len = strlen($value) - $pos;
+ } else {
+ $last_len = strlen($value);
+ }
+ $word = Mail_mimePart::encodeHeaderValue(
+ $word, $charset, $encoding, $last_len, $eol
+ );
+ } else if (($word[0] != '"' || $word[strlen($word)-1] != '"')
+ && preg_match('/[\(\)\<\>\\\.\[\]@,;:"]/', $word)
+ ) {
+ // ASCII: quote string if needed
+ $word = '"'.addcslashes($word, '\\"').'"';
+ }
+ }
+ $value .= $word.' '.$address;
+ } else {
+ // addr-spec not found, don't encode (?)
+ $value .= $part;
+ }
+
+ // RFC2822 recommends 78 characters limit, use 76 from RFC2047
+ $value = wordwrap($value, 76, $eol . ' ');
+ }
+
+ // remove header name prefix (there could be EOL too)
+ $value = preg_replace(
+ '/^'.$name.':('.preg_quote($eol, '/').')* /', '', $value
+ );
+
+ } else {
+ // Unstructured header
+ // non-ASCII: require encoding
+ if (preg_match('#([\x80-\xFF]){1}#', $value)) {
+ if ($value[0] == '"' && $value[strlen($value)-1] == '"') {
+ // de-quote quoted-string, encoding changes
+ // string to atom
+ $search = array("\\\"", "\\\\");
+ $replace = array("\"", "\\");
+ $value = str_replace($search, $replace, $value);
+ $value = substr($value, 1, -1);
+ }
+ $value = Mail_mimePart::encodeHeaderValue(
+ $value, $charset, $encoding, strlen($name) + 2, $eol
+ );
+ } else if (strlen($name.': '.$value) > 78) {
+ // ASCII: check if header line isn't too long and use folding
+ $value = preg_replace('/\r?\n[\s\t]*/', $eol . ' ', $value);
+ $tmp = wordwrap($name.': '.$value, 78, $eol . ' ');
+ $value = preg_replace('/^'.$name.':\s*/', '', $tmp);
+ // hard limit 998 (RFC2822)
+ $value = wordwrap($value, 998, $eol . ' ', true);
+ }
+ }
+
+ return $value;
+ }
+
+ /**
+ * Explode quoted string
+ *
+ * @param string $delimiter Delimiter expression string for preg_match()
+ * @param string $string Input string
+ *
+ * @return array String tokens array
* @access private
*/
- function _encodeReplaceCallback($matches)
+ function _explodeQuotedString($delimiter, $string)
{
- return sprintf('%%%02X', ord($matches[1]));
+ $result = array();
+ $strlen = strlen($string);
+
+ for ($q=$p=$i=0; $i < $strlen; $i++) {
+ if ($string[$i] == "\""
+ && (empty($string[$i-1]) || $string[$i-1] != "\\")
+ ) {
+ $q = $q ? false : true;
+ } else if (!$q && preg_match("/$delimiter/", $string[$i])) {
+ $result[] = substr($string, $p, $i - $p);
+ $p = $i + 1;
+ }
+ }
+
+ $result[] = substr($string, $p);
+ return $result;
+ }
+
+ /**
+ * Encodes a header value as per RFC2047
+ *
+ * @param string $value The header data to encode
+ * @param string $charset Character set name
+ * @param string $encoding Encoding name (base64 or quoted-printable)
+ * @param int $prefix_len Prefix length. Default: 0
+ * @param string $eol End-of-line sequence. Default: "\r\n"
+ *
+ * @return string Encoded header data
+ * @access public
+ * @since 1.6.1
+ */
+ function encodeHeaderValue($value, $charset, $encoding, $prefix_len=0, $eol="\r\n")
+ {
+ // #17311: Use multibyte aware method (requires mbstring extension)
+ if ($result = Mail_mimePart::encodeMB($value, $charset, $encoding, $prefix_len, $eol)) {
+ return $result;
+ }
+
+ // Generate the header using the specified params and dynamicly
+ // determine the maximum length of such strings.
+ // 75 is the value specified in the RFC.
+ $encoding = $encoding == 'base64' ? 'B' : 'Q';
+ $prefix = '=?' . $charset . '?' . $encoding .'?';
+ $suffix = '?=';
+ $maxLength = 75 - strlen($prefix . $suffix);
+ $maxLength1stLine = $maxLength - $prefix_len;
+
+ if ($encoding == 'B') {
+ // Base64 encode the entire string
+ $value = base64_encode($value);
+
+ // We can cut base64 every 4 characters, so the real max
+ // we can get must be rounded down.
+ $maxLength = $maxLength - ($maxLength % 4);
+ $maxLength1stLine = $maxLength1stLine - ($maxLength1stLine % 4);
+
+ $cutpoint = $maxLength1stLine;
+ $output = '';
+
+ while ($value) {
+ // Split translated string at every $maxLength
+ $part = substr($value, 0, $cutpoint);
+ $value = substr($value, $cutpoint);
+ $cutpoint = $maxLength;
+ // RFC 2047 specifies that any split header should
+ // be separated by a CRLF SPACE.
+ if ($output) {
+ $output .= $eol . ' ';
+ }
+ $output .= $prefix . $part . $suffix;
+ }
+ $value = $output;
+ } else {
+ // quoted-printable encoding has been selected
+ $value = Mail_mimePart::encodeQP($value);
+
+ // This regexp will break QP-encoded text at every $maxLength
+ // but will not break any encoded letters.
+ $reg1st = "|(.{0,$maxLength1stLine}[^\=][^\=])|";
+ $reg2nd = "|(.{0,$maxLength}[^\=][^\=])|";
+
+ if (strlen($value) > $maxLength1stLine) {
+ // Begin with the regexp for the first line.
+ $reg = $reg1st;
+ $output = '';
+ while ($value) {
+ // Split translated string at every $maxLength
+ // But make sure not to break any translated chars.
+ $found = preg_match($reg, $value, $matches);
+
+ // After this first line, we need to use a different
+ // regexp for the first line.
+ $reg = $reg2nd;
+
+ // Save the found part and encapsulate it in the
+ // prefix & suffix. Then remove the part from the
+ // $value_out variable.
+ if ($found) {
+ $part = $matches[0];
+ $len = strlen($matches[0]);
+ $value = substr($value, $len);
+ } else {
+ $part = $value;
+ $value = '';
+ }
+
+ // RFC 2047 specifies that any split header should
+ // be separated by a CRLF SPACE
+ if ($output) {
+ $output .= $eol . ' ';
+ }
+ $output .= $prefix . $part . $suffix;
+ }
+ $value = $output;
+ } else {
+ $value = $prefix . $value . $suffix;
+ }
+ }
+
+ return $value;
}
/**
@@ -785,16 +1081,121 @@
*/
function encodeQP($str)
{
- // Replace all special characters used by the encoder
- $search = array('=', '_', '?', ' ');
- $replace = array('=3D', '=5F', '=3F', '_');
- $str = str_replace($search, $replace, $str);
+ // Bug #17226 RFC 2047 restricts some characters
+ // if the word is inside a phrase, permitted chars are only:
+ // ASCII letters, decimal digits, "!", "*", "+", "-", "/", "=", and "_"
- // Replace all extended characters (\x80-xFF) with their
- // ASCII values.
- return preg_replace_callback(
- '/([\x80-\xFF])/', array('Mail_mimePart', '_qpReplaceCallback'), $str
+ // "=", "_", "?" must be encoded
+ $regexp = '/([\x22-\x29\x2C\x2E\x3A-\x40\x5B-\x60\x7B-\x7E\x80-\xFF])/';
+ $str = preg_replace_callback(
+ $regexp, array('Mail_mimePart', '_qpReplaceCallback'), $str
);
+
+ return str_replace(' ', '_', $str);
+ }
+
+ /**
+ * Encodes the given string using base64 or quoted-printable.
+ * This method makes sure that encoded-word represents an integral
+ * number of characters as per RFC2047.
+ *
+ * @param string $str String to encode
+ * @param string $charset Character set name
+ * @param string $encoding Encoding name (base64 or quoted-printable)
+ * @param int $prefix_len Prefix length. Default: 0
+ * @param string $eol End-of-line sequence. Default: "\r\n"
+ *
+ * @return string Encoded string
+ * @access public
+ * @since 1.8.0
+ */
+ function encodeMB($str, $charset, $encoding, $prefix_len=0, $eol="\r\n")
+ {
+ if (!function_exists('mb_substr') || !function_exists('mb_strlen')) {
+ return;
+ }
+
+ $encoding = $encoding == 'base64' ? 'B' : 'Q';
+ // 75 is the value specified in the RFC
+ $prefix = '=?' . $charset . '?'.$encoding.'?';
+ $suffix = '?=';
+ $maxLength = 75 - strlen($prefix . $suffix);
+
+ // A multi-octet character may not be split across adjacent encoded-words
+ // So, we'll loop over each character
+ // mb_stlen() with wrong charset will generate a warning here and return null
+ $length = mb_strlen($str, $charset);
+ $result = '';
+ $line_length = $prefix_len;
+
+ if ($encoding == 'B') {
+ // base64
+ $start = 0;
+ $prev = '';
+
+ for ($i=1; $i<=$length; $i++) {
+ // See #17311
+ $chunk = mb_substr($str, $start, $i-$start, $charset);
+ $chunk = base64_encode($chunk);
+ $chunk_len = strlen($chunk);
+
+ if ($line_length + $chunk_len == $maxLength || $i == $length) {
+ if ($result) {
+ $result .= "\n";
+ }
+ $result .= $chunk;
+ $line_length = 0;
+ $start = $i;
+ } else if ($line_length + $chunk_len > $maxLength) {
+ if ($result) {
+ $result .= "\n";
+ }
+ if ($prev) {
+ $result .= $prev;
+ }
+ $line_length = 0;
+ $start = $i - 1;
+ } else {
+ $prev = $chunk;
+ }
+ }
+ } else {
+ // quoted-printable
+ // see encodeQP()
+ $regexp = '/([\x22-\x29\x2C\x2E\x3A-\x40\x5B-\x60\x7B-\x7E\x80-\xFF])/';
+
+ for ($i=0; $i<=$length; $i++) {
+ $char = mb_substr($str, $i, 1, $charset);
+ // RFC recommends underline (instead of =20) in place of the space
+ // that's one of the reasons why we're not using iconv_mime_encode()
+ if ($char == ' ') {
+ $char = '_';
+ $char_len = 1;
+ } else {
+ $char = preg_replace_callback(
+ $regexp, array('Mail_mimePart', '_qpReplaceCallback'), $char
+ );
+ $char_len = strlen($char);
+ }
+
+ if ($line_length + $char_len > $maxLength) {
+ if ($result) {
+ $result .= "\n";
+ }
+ $line_length = 0;
+ }
+
+ $result .= $char;
+ $line_length += $char_len;
+ }
+ }
+
+ if ($result) {
+ $result = $prefix
+ .str_replace("\n", $suffix.$eol.' '.$prefix, $result).$suffix;
+ }
+
+ return $result;
}
/**
@@ -811,4 +1212,50 @@
return sprintf('=%02X', ord($matches[1]));
}
+ /**
+ * Callback function to replace extended characters (\x80-xFF) with their
+ * ASCII values (RFC2231)
+ *
+ * @param array $matches Preg_replace's matches array
+ *
+ * @return string Encoded character string
+ * @access private
+ */
+ function _encodeReplaceCallback($matches)
+ {
+ return sprintf('%%%02X', ord($matches[1]));
+ }
+
+ /**
+ * PEAR::isError implementation
+ *
+ * @param mixed $data Object
+ *
+ * @return bool True if object is an instance of PEAR_Error
+ * @access private
+ */
+ function _isError($data)
+ {
+ // PEAR::isError() is not PHP 5.4 compatible (see Bug #19473)
+ if (is_object($data) && is_a($data, 'PEAR_Error')) {
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * PEAR::raiseError implementation
+ *
+ * @param $message A text error message
+ *
+ * @return PEAR_Error Instance of PEAR_Error
+ * @access private
+ */
+ function _raiseError($message)
+ {
+ // PEAR::raiseError() is not PHP 5.4 compatible
+ return new PEAR_Error($message);
+ }
+
} // End of class
--
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