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roundcubemail/plugins/enigma/lib/enigma_mime_message.php

316 lines
10 KiB
PHP

<?php
/**
+-------------------------------------------------------------------------+
| Mail_mime wrapper for the Enigma Plugin |
| |
| Copyright (C) 2010-2015 The Roundcube Dev Team |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
| See the README file for a full license statement. |
| |
+-------------------------------------------------------------------------+
| Author: Aleksander Machniak <alec@alec.pl> |
+-------------------------------------------------------------------------+
*/
class enigma_mime_message extends Mail_mime
{
const PGP_SIGNED = 1;
const PGP_ENCRYPTED = 2;
protected $type;
protected $message;
protected $body;
protected $signature;
protected $encrypted;
/**
* Object constructor
*
* @param Mail_mime Original message
* @param int Output message type
*/
function __construct($message, $type)
{
$this->message = $message;
$this->type = $type;
// clone parameters
foreach (array_keys($this->build_params) as $param) {
$this->build_params[$param] = $message->getParam($param);
}
// clone headers
$this->headers = $message->headers();
/*
if ($message->getParam('delay_file_io')) {
// use common temp dir
$temp_dir = $this->config->get('temp_dir');
$body_file = tempnam($temp_dir, 'rcmMsg');
$mime_result = $message->saveMessageBody($body_file);
if (is_a($mime_result, 'PEAR_Error')) {
self::raise_error(array('code' => 650, 'type' => 'php',
'file' => __FILE__, 'line' => __LINE__,
'message' => "Could not create message: ".$mime_result->getMessage()),
true, false);
return false;
}
$msg_body = fopen($body_file, 'r');
}
else {
*/
// \r\n is must-have here
$this->body = $message->get() . "\r\n";
/*
}
*/
}
/**
* Check if the message is multipart (requires PGP/MIME)
*
* @return bool True if it is multipart, otherwise False
*/
public function isMultipart()
{
return $this->message instanceof enigma_mime_message
|| $this->message->isMultipart() || $this->message->getHTMLBody();
}
/**
* Get e-mail address of message sender
*
* @return string Sender address
*/
public function getFromAddress()
{
// get sender address
$headers = $this->message->headers();
$from = rcube_mime::decode_address_list($headers['From'], 1, false, null, true);
$from = $from[1];
return $from;
}
/**
* Get recipients' e-mail addresses
*
* @return array Recipients' addresses
*/
public function getRecipients()
{
// get sender address
$headers = $this->message->headers();
$to = rcube_mime::decode_address_list($headers['To'], null, false, null, true);
$cc = rcube_mime::decode_address_list($headers['Cc'], null, false, null, true);
$bcc = rcube_mime::decode_address_list($headers['Bcc'], null, false, null, true);
$recipients = array_unique(array_merge($to, $cc, $bcc));
$recipients = array_diff($recipients, array('undisclosed-recipients:'));
return $recipients;
}
/**
* Get original message body, to be encrypted/signed
*
* @return string Message body
*/
public function getOrigBody()
{
$_headers = $this->message->headers();
$headers = array();
if ($_headers['Content-Transfer-Encoding']
&& stripos($_headers['Content-Type'], 'multipart') === false
) {
$headers[] = 'Content-Transfer-Encoding: ' . $_headers['Content-Transfer-Encoding'];
}
$headers[] = 'Content-Type: ' . $_headers['Content-Type'];
return implode("\r\n", $headers) . "\r\n\r\n" . $this->body;
}
/**
* Register signature attachment
*
* @param string Signature body
*/
public function addPGPSignature($body)
{
$this->signature = $body;
// Reset Content-Type to be overwritten with valid boundary
unset($this->headers['Content-Type']);
unset($this->headers['Content-Transfer-Encoding']);
}
/**
* Register encrypted body
*
* @param string Encrypted body
*/
public function setPGPEncryptedBody($body)
{
$this->encrypted = $body;
// Reset Content-Type to be overwritten with valid boundary
unset($this->headers['Content-Type']);
unset($this->headers['Content-Transfer-Encoding']);
}
/**
* Builds the multipart message.
*
* @param array $params Build parameters that change the way the email
* is built. Should be associative. See $_build_params.
* @param resource $filename Output file where to save the message instead of
* returning it
* @param boolean $skip_head True if you want to return/save only the message
* without headers
*
* @return mixed The MIME message content string, null or PEAR error object
*/
public function get($params = null, $filename = null, $skip_head = false)
{
if (isset($params)) {
while (list($key, $value) = each($params)) {
$this->build_params[$key] = $value;
}
}
$this->checkParams();
if ($this->type == self::PGP_SIGNED) {
$params = array(
'preamble' => "This is an OpenPGP/MIME signed message (RFC 4880 and 3156)",
'content_type' => "multipart/signed; micalg=pgp-sha1; protocol=\"application/pgp-signature\"",
'eol' => $this->build_params['eol'],
);
$message = new Mail_mimePart('', $params);
if (!empty($this->body)) {
$headers = $this->message->headers();
$params = array('content_type' => $headers['Content-Type']);
if ($headers['Content-Transfer-Encoding']
&& stripos($headers['Content-Type'], 'multipart') === false
) {
$params['encoding'] = $headers['Content-Transfer-Encoding'];
}
$message->addSubpart($this->body, $params);
}
if (!empty($this->signature)) {
$message->addSubpart($this->signature, array(
'filename' => 'signature.asc',
'content_type' => 'application/pgp-signature',
'disposition' => 'attachment',
'description' => 'OpenPGP digital signature',
));
}
}
else if ($this->type == self::PGP_ENCRYPTED) {
$params = array(
'preamble' => "This is an OpenPGP/MIME encrypted message (RFC 4880 and 3156)",
'content_type' => "multipart/encrypted; protocol=\"application/pgp-encrypted\"",
'eol' => $this->build_params['eol'],
);
$message = new Mail_mimePart('', $params);
$message->addSubpart('Version: 1', array(
'content_type' => 'application/pgp-encrypted',
'description' => 'PGP/MIME version identification',
));
$message->addSubpart($this->encrypted, array(
'content_type' => 'application/octet-stream',
'description' => 'PGP/MIME encrypted message',
'disposition' => 'inline',
'filename' => 'encrypted.asc',
));
}
// Use saved boundary
if (!empty($this->build_params['boundary'])) {
$boundary = $this->build_params['boundary'];
}
else {
$boundary = null;
}
// Write output to file
if ($filename) {
// Append mimePart message headers and body into file
$headers = $message->encodeToFile($filename, $boundary, $skip_head);
if ($this->isError($headers)) {
return $headers;
}
$this->headers = array_merge($this->headers, $headers);
return;
}
else {
$output = $message->encode($boundary, $skip_head);
if ($this->isError($output)) {
return $output;
}
$this->headers = array_merge($this->headers, $output['headers']);
return $output['body'];
}
}
/**
* Get Content-Type and Content-Transfer-Encoding headers of the message
*
* @return array Headers array
*/
protected function contentHeaders()
{
$this->checkParams();
$eol = $this->build_params['eol'] ?: "\r\n";
// multipart message: and boundary
if (!empty($this->build_params['boundary'])) {
$boundary = $this->build_params['boundary'];
}
else if (!empty($this->headers['Content-Type'])
&& preg_match('/boundary="([^"]+)"/', $this->headers['Content-Type'], $m)
) {
$boundary = $m[1];
}
else {
$boundary = '=_' . md5(rand() . microtime());
}
$this->build_params['boundary'] = $boundary;
if ($this->type == self::PGP_SIGNED) {
$headers['Content-Type'] = "multipart/signed; micalg=pgp-sha1;$eol"
." protocol=\"application/pgp-signature\";$eol"
." boundary=\"$boundary\"";
}
else if ($this->type == self::PGP_ENCRYPTED) {
$headers['Content-Type'] = "multipart/encrypted;$eol"
." protocol=\"application/pgp-encrypted\";$eol"
." boundary=\"$boundary\"";
}
return $headers;
}
}