/**
* Handle the message.
*
* @param int $inh The file handle pointing to the message.
* @param string $transport The name of the transport driver.
*
* @return mixed A PEAR_Error in case of an error, nothing otherwise.
*/
function _parse($inh, $transport)
{
global $conf;
$result = $this->init();
if (is_a($result, 'PEAR_Error')) {
return $result;
}
if (isset($conf['kolab']['filter']['verify_from_header'])) {
$verify_from_header = $conf['kolab']['filter']['verify_from_header'];
} else {
$verify_from_header = false;
}
if (isset($conf['kolab']['filter']['allow_sender_header'])) {
$allow_sender_header = $conf['kolab']['filter']['allow_sender_header'];
} else {
$allow_sender_header = false;
}
if (isset($conf['kolab']['filter']['allow_outlook_ical_forward'])) {
$allow_outlook_ical_forward = $conf['kolab']['filter']['allow_outlook_ical_forward'];
} else {
$allow_outlook_ical_forward = true;
}
if (empty($transport)) {
$transport = 'smtp';
}
$ical = false;
$from = false;
$subject = false;
$senderok = true;
$rewrittenfrom = false;
$state = RM_STATE_READING_HEADER;
while (!feof($inh) && $state != RM_STATE_READING_BODY) {
$buffer = fgets($inh, 8192);
$line = rtrim($buffer, "\r\n");
if ($line == '') {
/* Done with headers */
$state = RM_STATE_READING_BODY;
if ($from && $verify_from_header) {
$rc = $this->_verify_sender($this->_sasl_username, $this->_sender, $from, $this->_client_address);
if (is_a($rc, 'PEAR_Error')) {
return $rc;
} else {
if ($rc === true) {
/* All OK, do nothing */
} else {
if ($rc === false) {
/* Reject! */
$senderok = false;
} else {
if (is_string($rc)) {
/* Rewrite from */
if (strpos($from, $rc) === false) {
Horde::log(sprintf("Rewriting '%s' to '%s'", $from, $rc), 'DEBUG');
$rewrittenfrom = "From: {$rc}\r\n";
}
}
}
}
}
}
} else {
if ($line[0] != ' ' && $line[0] != "\t") {
$state = RM_STATE_READING_HEADER;
}
switch ($state) {
case RM_STATE_READING_HEADER:
if ($allow_sender_header && preg_match('#^Sender: (.*)#i', $line, $regs)) {
$from = $regs[1];
$state = RM_STATE_READING_SENDER;
} else {
if (!$from && preg_match('#^From: (.*)#i', $line, $regs)) {
$from = $regs[1];
$state = RM_STATE_READING_FROM;
} else {
if (preg_match('#^Subject: (.*)#i', $line, $regs)) {
$subject = $regs[1];
$state = RM_STATE_READING_SUBJECT;
} else {
if (preg_match('#^Content-Type: text/calendar#i', $line)) {
Horde::log("Found iCal data in message", 'DEBUG');
$ical = true;
} else {
if (preg_match('#^Message-ID: (.*)#i', $line, $regs)) {
$this->_id = $regs[1];
}
}
}
}
}
break;
case RM_STATE_READING_FROM:
$from .= $line;
break;
case RM_STATE_READING_SENDER:
$from .= $line;
break;
case RM_STATE_READING_SUBJECT:
$subject .= $line;
break;
}
}
if (@fwrite($this->_tmpfh, $buffer) === false) {
$msg = $php_errormsg;
return PEAR::raiseError(sprintf("Error: Could not write to %s: %s", $this->_tmpfile, $msg), OUT_LOG | EX_IOERR);
}
}
while (!feof($inh)) {
$buffer = fread($inh, 8192);
if (@fwrite($this->_tmpfh, $buffer) === false) {
$msg = $php_errormsg;
return PEAR::raiseError(sprintf("Error: Could not write to %s: %s", $this->_tmpfile, $msg), OUT_LOG | EX_IOERR);
}
}
if (@fclose($this->_tmpfh) === false) {
$msg = $php_errormsg;
return PEAR::raiseError(sprintf("Error: Failed closing %s: %s", $this->_tmpfile, $msg), OUT_LOG | EX_IOERR);
}
if (!$senderok) {
if ($ical && $allow_outlook_ical_forward) {
require_once __DIR__ . '/Outlook.php';
$rc = Kolab_Filter_Outlook::embedICal($this->_fqhostname, $this->_sender, $this->_recipients, $from, $subject, $this->_tmpfile, $transport);
if (is_a($rc, 'PEAR_Error')) {
return $rc;
} else {
if ($rc === true) {
return;
}
}
} else {
return PEAR::raiseError(sprintf("Invalid From: header. %s looks like a forged sender", $from), OUT_LOG | OUT_STDOUT | EX_NOPERM);
}
}
$result = $this->_deliver($rewrittenfrom, $transport);
if (is_a($result, 'PEAR_Error')) {
return $result;
}
}
