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<?php
/**
* Deliver_SendMail.class.php
*
* Delivery backend for the Deliver class.
*
* @author Marc Groot Koerkamp
* @copyright 1999-2010 The SquirrelMail Project Team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id: Deliver_SendMail.class.php 13893 2010-01-25 02:47:41Z pdontthink $
* @package squirrelmail
*/
/** This of course depends upon Deliver */
require_once(SM_PATH . 'class/deliver/Deliver.class.php');
/**
* Delivers messages using the sendmail binary
* @package squirrelmail
*/
class Deliver_SendMail extends Deliver {
/**
* Extra sendmail arguments
*
* Parameter can be set in class constructor function.
*
* WARNING: Introduction of this parameter broke backwards compatibility
* with workarounds specific to qmail-inject.
*
* If parameter needs some security modifications, it should be set to
* private in PHP 5+ in order to prevent uncontrolled access.
* @var string
* @since 1.5.1 and 1.4.8
*/
var $sendmail_args = '-i -t';
/**
* Stores used sendmail command
* Private variable that is used to inform about used sendmail command.
* @var string
* @since 1.5.1 and 1.4.8
*/
var $sendmail_command = '';
/**
* Constructor function
* @param array configuration options. array key = option name,
* array value = option value.
* @return void
* @since 1.5.1 and 1.4.8
*/
function Deliver_SendMail($params=array()) {
if (!empty($params) && is_array($params)) {
// set extra sendmail arguments
if (isset($params['sendmail_args'])) {
$this->sendmail_args = $params['sendmail_args'];
}
}
}
/**
* function preWriteToStream
*
* Sendmail needs LF's as line endings instead of CRLF.
* This function translates the line endings to LF and should be called
* before each line is written to the stream.
*
* @param string $s Line to process
* @return void
* @access private
*/
function preWriteToStream(&$s) {
if ($s) {
$s = str_replace("\r\n", "\n", $s);
}
}
/**
* function initStream
*
* Initialise the sendmail connection.
*
* @param Message $message Message object containing the from address
* @param string $sendmail_path Location of sendmail binary
* @return void
* @access public
*/
function initStream($message, $sendmail_path) {
$rfc822_header = $message->rfc822_header;
$from = $rfc822_header->from[0];
$envelopefrom = trim($from->mailbox.'@'.$from->host);
$envelopefrom = str_replace(array("\0","\n"),array('',''),$envelopefrom);
// save executed command for future reference
$this->sendmail_command = "$sendmail_path $this->sendmail_args -f$envelopefrom";
// open process handle for writing
$stream = popen(escapeshellcmd($this->sendmail_command), "w");
return $stream;
}
/**
* function finalizeStream
*
* Close the stream.
*
* @param resource $stream
* @return boolean
* @access public
*/
function finalizeStream($stream) {
$ret = true;
$status = pclose($stream);
// check pclose() status.
if ($status!=0) {
$ret = false;
$this->dlv_msg=_("Email delivery error");
$this->dlv_ret_nr=$status;
// we can get better error messsage only if we switch to php 4.3+ and proc_open().
$this->dlv_server_msg=sprintf(_("Can't execute command '%s'."),$this->sendmail_command);
}
return $ret;
}
/**
* function getBcc
*
* In case of sendmail, the rfc822header must contain the bcc header.
*
* @return boolean true if rfc822header should include the bcc header.
* @access private
*/
function getBcc() {
return true;
}
/**
* function clean_crlf
*
* Cleans each line to only end in a LF
* Returns the length of the line including a CR,
* so that length is correct when the message is saved to imap
* Implemented to fix sendmail->postfix rejection of messages with
* attachments because of stray LF's
*
* @param string $s string to strip of CR's
* @return integer length of string including a CR for each LF
* @access private
*/
function clean_crlf(&$s) {
$s = str_replace("\r\n", "\n", $s);
$s = str_replace("\r", "\n", $s);
$s2 = str_replace("\n", "\r\n", $s);
return strlen($s2);
}
}
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