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mime.php
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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
// +-----------------------------------------------------------------------+
// | Copyright (c) 2002-2003 Richard Heyes |
// | Copyright (c) 2003-2005 The PHP Group |
// | All rights reserved. |
// | |
// | Redistribution and use in source and binary forms, with or without |
// | modification, are permitted provided that the following conditions |
// | are met: |
// | |
// | o Redistributions of source code must retain the above copyright |
// | notice, this list of conditions and the following disclaimer. |
// | o Redistributions in binary form must reproduce the above copyright |
// | notice, this list of conditions and the following disclaimer in the |
// | documentation and/or other materials provided with the distribution.|
// | o The names of the authors may not be used to endorse or promote |
// | products derived from this software without specific prior written |
// | permission. |
// | |
// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
// | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
// | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
// | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
// | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
// | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
// | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
// | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
// | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
// | |
// +-----------------------------------------------------------------------+
// | Author: Richard Heyes <richard@phpguru.org> |
// | Tomas V.V.Cox <cox@idecnet.com> (port to PEAR) |
// +-----------------------------------------------------------------------+
//
// $Id$
require_once('PEAR.php');
require_once('Mail/mimePart.php');
/**
* Mime mail composer class. Can handle: text and html bodies, embedded html
* images and attachments.
* Documentation and examples of this class are avaible here:
* http://pear.php.net/manual/
*
* @notes This class is based on HTML Mime Mail class from
* Richard Heyes <richard@phpguru.org> which was based also
* in the mime_mail.class by Tobias Ratschiller <tobias@dnet.it> and
* Sascha Schumann <sascha@schumann.cx>
*
* @notes Replaced method _encodeHeaders by the version of ed@avi.ru
* See http://pear.php.net/bugs/bug.php?id=30 for details
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
* @author Tomas V.V.Cox <cox@idecnet.com>
* @package Mail
* @access public
*/
class Mail_mime
{
/**
* Contains the plain text part of the email
* @var string
*/
var $_txtbody;
/**
* Contains the html part of the email
* @var string
*/
var $_htmlbody;
/**
* contains the mime encoded text
* @var string
*/
var $_mime;
/**
* contains the multipart content
* @var string
*/
var $_multipart;
/**
* list of the attached images
* @var array
*/
var $_html_images = array();
/**
* list of the attachements
* @var array
*/
var $_parts = array();
/**
* Build parameters
* @var array
*/
var $_build_params = array();
/**
* Headers for the mail
* @var array
*/
var $_headers = array();
/**
* End Of Line sequence (for serialize)
* @var string
*/
var $_eol;
/**
* Constructor function
*
* @access public
*/
function Mail_mime($crlf = "\r\n")
{
$this->_setEOL($crlf);
$this->_build_params = array(
'text_encoding' => '7bit',
'html_encoding' => 'quoted-printable',
'head_encoding' => 'quoted-printable',
'7bit_wrap' => 998,
'html_charset' => 'ISO-8859-1',
'text_charset' => 'ISO-8859-1',
'head_charset' => 'ISO-8859-1'
);
}
/**
* Wakeup (unserialize) - re-sets EOL constant
*
* @access private
*/
function __wakeup()
{
$this->_setEOL($this->_eol);
}
/**
* Accessor function to set the body text. Body text is used if
* it's not an html mail being sent or else is used to fill the
* text/plain part that emails clients who don't support
* html should show.
*
* @param string $data Either a string or
* the file name with the contents
* @param bool $isfile If true the first param should be treated
* as a file name, else as a string (default)
* @param bool $append If true the text or file is appended to
* the existing body, else the old body is
* overwritten
* @return mixed true on success or PEAR_Error object
* @access public
*/
function setTXTBody($data, $isfile = false, $append = false)
{
if (!$isfile) {
if (!$append) {
$this->_txtbody = $data;
} else {
$this->_txtbody .= $data;
}
} else {
$cont = $this->_file2str($data);
if (PEAR::isError($cont)) {
return $cont;
}
if (!$append) {
$this->_txtbody = $cont;
} else {
$this->_txtbody .= $cont;
}
}
return true;
}
/**
* Adds a html part to the mail
*
* @param string $data Either a string or the file name with the
* contents
* @param bool $isfile If true the first param should be treated
* as a file name, else as a string (default)
* @return mixed true on success or PEAR_Error object
* @access public
*/
function setHTMLBody($data, $isfile = false)
{
if (!$isfile) {
$this->_htmlbody = $data;
} else {
$cont = $this->_file2str($data);
if (PEAR::isError($cont)) {
return $cont;
}
$this->_htmlbody = $cont;
}
return true;
}
/**
* Adds an image to the list of embedded images.
*
* @param string $file The image file name OR image data itself
* @param string $c_type The content type
* @param string $name The filename of the image.
* Only use if $file is the image data
* @param bool $isfilename Whether $file is a filename or not
* Defaults to true
* @return mixed true on success or PEAR_Error object
* @access public
*/
function addHTMLImage($file, $c_type='application/octet-stream',
$name = '', $isfilename = true)
{
$filedata = ($isfilename === true) ? $this->_file2str($file)
: $file;
if ($isfilename === true) {
$filename = ($name == '' ? basename($file) : basename($name));
} else {
$filename = basename($name);
}
if (PEAR::isError($filedata)) {
return $filedata;
}
$this->_html_images[] = array(
'body' => $filedata,
'name' => $filename,
'c_type' => $c_type,
'cid' => md5(uniqid(time()))
);
return true;
}
/**
* Adds a file to the list of attachments.
*
* @param string $file The file name of the file to attach
* OR the file data itself
* @param string $c_type The content type
* @param string $name The filename of the attachment
* Only use if $file is the file data
* @param bool $isFilename Whether $file is a filename or not
* Defaults to true
* @return mixed true on success or PEAR_Error object
* @access public
*/
function addAttachment($file, $c_type = 'application/octet-stream',
$name = '', $isfilename = true,
$encoding = 'base64')
{
$filedata = ($isfilename === true) ? $this->_file2str($file)
: $file;
if ($isfilename === true) {
// Force the name the user supplied, otherwise use $file
$filename = (!empty($name)) ? $name : $file;
} else {
$filename = $name;
}
if (empty($filename)) {
return PEAR::raiseError(
'The supplied filename for the attachment can\'t be empty'
);
}
$filename = basename($filename);
if (PEAR::isError($filedata)) {
return $filedata;
}
$this->_parts[] = array(
'body' => $filedata,
'name' => $filename,
'c_type' => $c_type,
'encoding' => $encoding
);
return true;
}
/**
* Get the contents of the given file name as string
*
* @param string $file_name path of file to process
* @return string contents of $file_name
* @access private
*/
function &_file2str($file_name)
{
if (!is_readable($file_name)) {
return PEAR::raiseError('File is not readable ' . $file_name);
}
if (!$fd = fopen($file_name, 'rb')) {
return PEAR::raiseError('Could not open ' . $file_name);
}
$filesize = filesize($file_name);
if ($filesize == 0){
$cont = "";
}else{
$cont = fread($fd, $filesize);
}
fclose($fd);
return $cont;
}
/**
* Adds a text subpart to the mimePart object and
* returns it during the build process.
*
* @param mixed The object to add the part to, or
* null if a new object is to be created.
* @param string The text to add.
* @return object The text mimePart object
* @access private
*/
function &_addTextPart(&$obj, $text)
{
$params['content_type'] = 'text/plain';
$params['encoding'] = $this->_build_params['text_encoding'];
$params['charset'] = $this->_build_params['text_charset'];
if (is_object($obj)) {
return $obj->addSubpart($text, $params);
} else {
return new Mail_mimePart($text, $params);
}
}
/**
* Adds a html subpart to the mimePart object and
* returns it during the build process.
*
* @param mixed The object to add the part to, or
* null if a new object is to be created.
* @return object The html mimePart object
* @access private
*/
function &_addHtmlPart(&$obj)
{
$params['content_type'] = 'text/html';
$params['encoding'] = $this->_build_params['html_encoding'];
$params['charset'] = $this->_build_params['html_charset'];
if (is_object($obj)) {
return $obj->addSubpart($this->_htmlbody, $params);
} else {
return new Mail_mimePart($this->_htmlbody, $params);
}
}
/**
* Creates a new mimePart object, using multipart/mixed as
* the initial content-type and returns it during the
* build process.
*
* @return object The multipart/mixed mimePart object
* @access private
*/
function &_addMixedPart()
{
$params['content_type'] = 'multipart/mixed';
return new Mail_mimePart('', $params);
}
/**
* Adds a multipart/alternative part to a mimePart
* object (or creates one), and returns it during
* the build process.
*
* @param mixed The object to add the part to, or
* null if a new object is to be created.
* @return object The multipart/mixed mimePart object
* @access private
*/
function &_addAlternativePart(&$obj)
{
$params['content_type'] = 'multipart/alternative';
if (is_object($obj)) {
return $obj->addSubpart('', $params);
} else {
return new Mail_mimePart('', $params);
}
}
/**
* Adds a multipart/related part to a mimePart
* object (or creates one), and returns it during
* the build process.
*
* @param mixed The object to add the part to, or
* null if a new object is to be created
* @return object The multipart/mixed mimePart object
* @access private
*/
function &_addRelatedPart(&$obj)
{
$params['content_type'] = 'multipart/related';
if (is_object($obj)) {
return $obj->addSubpart('', $params);
} else {
return new Mail_mimePart('', $params);
}
}
/**
* Adds an html image subpart to a mimePart object
* and returns it during the build process.
*
* @param object The mimePart to add the image to
* @param array The image information
* @return object The image mimePart object
* @access private
*/
function &_addHtmlImagePart(&$obj, $value)
{
$params['content_type'] = $value['c_type'];
$params['encoding'] = 'base64';
$params['disposition'] = 'inline';
$params['dfilename'] = $value['name'];
$params['cid'] = $value['cid'];
$obj->addSubpart($value['body'], $params);
}
/**
* Adds an attachment subpart to a mimePart object
* and returns it during the build process.
*
* @param object The mimePart to add the image to
* @param array The attachment information
* @return object The image mimePart object
* @access private
*/
function &_addAttachmentPart(&$obj, $value)
{
$params['content_type'] = $value['c_type'];
$params['encoding'] = $value['encoding'];
$params['disposition'] = 'attachment';
$params['dfilename'] = $value['name'];
$obj->addSubpart($value['body'], $params);
}
/**
* Builds the multipart message from the list ($this->_parts) and
* returns the mime content.
*
* @param array Build parameters that change the way the email
* is built. Should be associative. Can contain:
* text_encoding - What encoding to use for plain text
* Default is 7bit
* html_encoding - What encoding to use for html
* Default is quoted-printable
* 7bit_wrap - Number of characters before text is
* wrapped in 7bit encoding
* Default is 998
* html_charset - The character set to use for html.
* Default is iso-8859-1
* text_charset - The character set to use for text.
* Default is iso-8859-1
* head_charset - The character set to use for headers.
* Default is iso-8859-1
* @return string The mime content
* @access public
*/
function &get($build_params = null)
{
if (isset($build_params)) {
while (list($key, $value) = each($build_params)) {
$this->_build_params[$key] = $value;
}
}
if (!empty($this->_html_images) AND isset($this->_htmlbody)) {
foreach ($this->_html_images as $value) {
$regex = '#(\s)((?i)src|background|href(?-i))\s*=\s*(["\']?)' . preg_quote($value['name'], '#') .
'\3#';
$rep = '\1\2=\3cid:' . $value['cid'] .'\3';
$this->_htmlbody = preg_replace($regex, $rep,
$this->_htmlbody
);
}
}
$null = null;
$attachments = !empty($this->_parts) ? true : false;
$html_images = !empty($this->_html_images) ? true : false;
$html = !empty($this->_htmlbody) ? true : false;
$text = (!$html AND !empty($this->_txtbody)) ? true : false;
switch (true) {
case $text AND !$attachments:
$message =& $this->_addTextPart($null, $this->_txtbody);
break;
case !$text AND !$html AND $attachments:
$message =& $this->_addMixedPart();
for ($i = 0; $i < count($this->_parts); $i++) {
$this->_addAttachmentPart($message, $this->_parts[$i]);
}
break;
case $text AND $attachments:
$message =& $this->_addMixedPart();
$this->_addTextPart($message, $this->_txtbody);
for ($i = 0; $i < count($this->_parts); $i++) {
$this->_addAttachmentPart($message, $this->_parts[$i]);
}
break;
case $html AND !$attachments AND !$html_images:
if (isset($this->_txtbody)) {
$message =& $this->_addAlternativePart($null);
$this->_addTextPart($message, $this->_txtbody);
$this->_addHtmlPart($message);
} else {
$message =& $this->_addHtmlPart($null);
}
break;
case $html AND !$attachments AND $html_images:
if (isset($this->_txtbody)) {
$message =& $this->_addAlternativePart($null);
$this->_addTextPart($message, $this->_txtbody);
$related =& $this->_addRelatedPart($message);
} else {
$message =& $this->_addRelatedPart($null);
$related =& $message;
}
$this->_addHtmlPart($related);
for ($i = 0; $i < count($this->_html_images); $i++) {
$this->_addHtmlImagePart($related, $this->_html_images[$i]);
}
break;
case $html AND $attachments AND !$html_images:
$message =& $this->_addMixedPart();
if (isset($this->_txtbody)) {
$alt =& $this->_addAlternativePart($message);
$this->_addTextPart($alt, $this->_txtbody);
$this->_addHtmlPart($alt);
} else {
$this->_addHtmlPart($message);
}
for ($i = 0; $i < count($this->_parts); $i++) {
$this->_addAttachmentPart($message, $this->_parts[$i]);
}
break;
case $html AND $attachments AND $html_images:
$message =& $this->_addMixedPart();
if (isset($this->_txtbody)) {
$alt =& $this->_addAlternativePart($message);
$this->_addTextPart($alt, $this->_txtbody);
$rel =& $this->_addRelatedPart($alt);
} else {
$rel =& $this->_addRelatedPart($message);
}
$this->_addHtmlPart($rel);
for ($i = 0; $i < count($this->_html_images); $i++) {
$this->_addHtmlImagePart($rel, $this->_html_images[$i]);
}
for ($i = 0; $i < count($this->_parts); $i++) {
$this->_addAttachmentPart($message, $this->_parts[$i]);
}
break;
}
if (isset($message)) {
$output = $message->encode();
$this->_headers = array_merge($this->_headers,
$output['headers']);
return $output['body'];
} else {
return false;
}
}
/**
* Returns an array with the headers needed to prepend to the email
* (MIME-Version and Content-Type). Format of argument is:
* $array['header-name'] = 'header-value';
*
* @param array $xtra_headers Assoc array with any extra headers.
* Optional.
* @return array Assoc array with the mime headers
* @access public
*/
function &headers($xtra_headers = null)
{
// Content-Type header should already be present,
// So just add mime version header
$headers['MIME-Version'] = '1.0';
if (isset($xtra_headers)) {
$headers = array_merge($headers, $xtra_headers);
}
$this->_headers = array_merge($headers, $this->_headers);
return $this->_encodeHeaders($this->_headers);
}
/**
* Get the text version of the headers
* (usefull if you want to use the PHP mail() function)
*
* @param array $xtra_headers Assoc array with any extra headers.
* Optional.
* @return string Plain text headers
* @access public
*/
function txtHeaders($xtra_headers = null)
{
$headers = $this->headers($xtra_headers);
$ret = '';
foreach ($headers as $key => $val) {
$ret .= "$key: $val" . MAIL_MIME_CRLF;
}
return $ret;
}
/**
* Sets the Subject header
*
* @param string $subject String to set the subject to
* access public
*/
function setSubject($subject)
{
$this->_headers['Subject'] = $subject;
}
/**
* Set an email to the From (the sender) header
*
* @param string $email The email direction to add
* @access public
*/
function setFrom($email)
{
$this->_headers['From'] = $email;
}
/**
* Add an email to the Cc (carbon copy) header
* (multiple calls to this method are allowed)
*
* @param string $email The email direction to add
* @access public
*/
function addCc($email)
{
if (isset($this->_headers['Cc'])) {
$this->_headers['Cc'] .= ", $email";
} else {
$this->_headers['Cc'] = $email;
}
}
/**
* Add an email to the Bcc (blank carbon copy) header
* (multiple calls to this method are allowed)
*
* @param string $email The email direction to add
* @access public
*/
function addBcc($email)
{
if (isset($this->_headers['Bcc'])) {
$this->_headers['Bcc'] .= ", $email";
} else {
$this->_headers['Bcc'] = $email;
}
}
/**
* Encodes a header as per RFC2047
*
* @param string $input The header data to encode
* @return string Encoded data
* @access private
*/
function _encodeHeaders($input)
{
foreach ($input as $hdr_name => $hdr_value) {
preg_match_all('/([\w\-]*[\x80-\xFF]+[\w\-]*(\s+[\w\-]*[\x80-\xFF]+[\w\-]*)*)\s*/',
$hdr_value, $matches);
foreach ($matches[1] as $value) {
switch ($head_encoding = $this->_build_params['head_encoding']) {
case 'base64':
$symbol = 'B';
$replacement = base64_encode($value);
break;
default:
if ($head_encoding != 'quoted-printable') {
PEAR::raiseError('Invalid header encoding specified; using `quoted-printable` instead',
NULL,
PEAR_ERROR_TRIGGER,
E_USER_WARNING);
}
$symbol = 'Q';
$replacement = preg_replace('/([\s_=\?\x80-\xFF])/e', '"=" . strtoupper(dechex(ord("\1")))', $value);
}
$hdr_value = str_replace($value, '=?' . $this->_build_params['head_charset'] . '?' . $symbol . '?' . $replacement . '?=', $hdr_value);
}
$input[$hdr_name] = $hdr_value;
}
return $input;
}
/**
* Set the object's end-of-line and define the constant if applicable
*
* @param string $eol End Of Line sequence
* @access private
*/
function _setEOL($eol)
{
$this->_eol = $eol;
if (!defined('MAIL_MIME_CRLF')) {
define('MAIL_MIME_CRLF', $this->_eol, true);
}
}
} // End of class
?>

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