From 142b3c44cb8176928b2b8001f516472e69aca537 Mon Sep 17 00:00:00 2001
From: mcramer <m.cramer@pixcept.de>
Date: Mon, 08 Oct 2012 08:15:22 -0400
Subject: [PATCH] Implemented: Added support for delivery notification and smime email signing via openssl
---
interface/lib/classes/ispcmail.inc.php | 84 +++++++++++++++++++++++++++++++++++++++++-
1 files changed, 82 insertions(+), 2 deletions(-)
diff --git a/interface/lib/classes/ispcmail.inc.php b/interface/lib/classes/ispcmail.inc.php
index 3086da8..388a638 100644
--- a/interface/lib/classes/ispcmail.inc.php
+++ b/interface/lib/classes/ispcmail.inc.php
@@ -55,6 +55,7 @@
private $body = '';
private $_mail_sender = '';
private $_sent_mails = 0;
+ private $user_agent = 'ISPConfig/3 (Mailer Class)';
/**#@-*/
/**
@@ -100,6 +101,22 @@
* How many mails should be sent via one single smtp connection
*/
private $smtp_max_mails = 20;
+ /**
+ * Should the mail be signed
+ */
+ private $sign_email = false;
+ /**
+ * The cert and key to use for email signing
+ */
+ private $sign_key = '';
+ private $sign_key_pass = '';
+ private $sign_cert = '';
+ private $sign_bundle = '';
+ private $_is_signed = false;
+ /**
+ * get disposition notification
+ */
+ private $notification = false;
/**#@-*/
public function __construct($options = array()) {
@@ -110,6 +127,7 @@
$this->attachments = array();
$this->headers['MIME-Version'] = '1.0';
+ $this->headers['User-Agent'] = $this->user_agent;
if(is_array($options) && count($options) > 0) $this->setOptions($options);
}
@@ -155,8 +173,26 @@
if($value != 'ssl' && $value != 'tls') $value = '';
$this->smtp_crypt = $value;
break;
+ case 'sign_email':
+ $this->sign_email = ($value == true ? true : false);
+ break;
+ case 'sign_key':
+ $this->sign_key = $value;
+ break;
+ case 'sign_key_pass':
+ $this->sign_key_pass = $value;
+ break;
+ case 'sign_cert':
+ $this->sign_cert = $value;
+ break;
+ case 'sign_bundle':
+ $this->sign_bundle = $value;
+ break;
case 'mail_charset':
$this->mail_charset = $value;
+ break;
+ case 'notify':
+ $this->notification = ($value == true ? true : false);
break;
}
}
@@ -394,7 +430,8 @@
$this->body .= "--{$this->mime_boundary}\n" .
"Content-Type: " . $att['type'] . ";\n" .
" name=\"" . $att['filename'] . "\"\n" .
- "Content-Transfer-Encoding: base64\n\n" .
+ "Content-Transfer-Encoding: base64\n" .
+ "Content-Disposition: attachment;\n\n" .
chunk_split(base64_encode($att['content'])) . "\n\n";
}
}
@@ -413,6 +450,44 @@
} else {
return false;
}
+ }
+
+ /**
+ * Function to sign an email body
+ */
+ private function sign() {
+ if($this->sign_email == false || $this->sign_key == '' || $this->sign_cert == '') return false;
+ if(function_exists('openssl_pkcs7_sign') == false) return false;
+
+ $tmpin = tempnam(sys_get_temp_dir(), 'sign');
+ $tmpout = tempnam(sys_get_temp_dir(), 'sign');
+ if(!file_exists($tmpin) || !is_writable($tmpin)) return false;
+
+ file_put_contents($tmpin, 'Content-Type: ' . $this->getHeader('Content-Type') . "\n\n" . $this->body);
+ $tmpf_key = tempnam(sys_get_temp_dir(), 'sign');
+ file_put_contents($tmpf_key, $this->sign_key);
+ $tmpf_cert = tempnam(sys_get_temp_dir(), 'sign');
+ file_put_contents($tmpf_cert, $this->sign_cert);
+ if($this->sign_bundle != '') {
+ $tmpf_bundle = tempnam(sys_get_temp_dir(), 'sign');
+ file_put_contents($tmpf_bundle, $this->sign_bundle);
+ openssl_pkcs7_sign($tmpin, $tmpout, 'file://' . realpath($tmpf_cert), array('file://' . realpath($tmpf_key), $this->sign_key_pass), array(), PKCS7_DETACHED, realpath($tmpf_bundle));
+ } else {
+ openssl_pkcs7_sign($tmpin, $tmpout, 'file://' . realpath($tmpf_cert), array('file://' . realpath($tmpf_key), $this->sign_key_pass), array());
+ }
+ unlink($tmpin);
+ unlink($tmpf_cert);
+ unlink($tmpf_key);
+ if(file_exists($tmpf_bundle)) unlink($tmpf_bundle);
+
+ if(!file_exists($tmpout) || !is_readable($tmpout)) return false;
+ $this->body = file_get_contents($tmpout);
+ unlink($tmpout);
+
+ unset($this->headers['Content-Type']);
+ unset($this->headers['MIME-Version']);
+
+ $this->_is_signed = true;
}
/**
@@ -496,6 +571,7 @@
else $this->_crlf = "\n";
$this->create();
+ if($this->sign_email == true) $this->sign();
$subject = '';
if (!empty($this->headers['Subject'])) {
@@ -505,6 +581,8 @@
$enc_subject = $this->_encodeHeader($subject, $this->mail_charset);
unset($this->headers['Subject']);
}
+
+ if($this->notification == true) $this->setHeader('Disposition-Notification-To', $this->getHeader('From'));
unset($this->headers['To']); // always reset the To header to prevent from sending to multiple users at once
$this->headers['Date'] = date('r'); //date('D, d M Y H:i:s O');
@@ -554,7 +632,7 @@
$mail_content .= 'To: ' . $this->getHeader('To') . $this->_crlf;
if($this->getHeader('Bcc') != '') $mail_content .= 'Bcc: ' . $this->_encodeHeader($this->getHeader('Bcc'), $this->mail_charset) . $this->_crlf;
if($this->getHeader('Cc') != '') $mail_content .= 'Cc: ' . $this->_encodeHeader($this->getHeader('Cc'), $this->mail_charset) . $this->_crlf;
- $mail_content .= implode($this->_crlf, $headers) . $this->_crlf . $this->_crlf . $this->body;
+ $mail_content .= implode($this->_crlf, $headers) . $this->_crlf . ($this->_is_signed == false ? $this->_crlf : '') . $this->body;
fputs($this->_smtp_conn, $mail_content . $this->_crlf . '.' . $this->_crlf);
$response = fgets($this->_smtp_conn, 515);
@@ -605,6 +683,7 @@
$this->html_part = '';
$this->headers['MIME-Version'] = '1.0';
+ $this->headers['User-Agent'] = $this->user_agent;
$this->smtp_helo = '';
$this->smtp_host = '';
@@ -615,6 +694,7 @@
$this->smtp_crypt = false;
$this->mail_charset = 'UTF-8';
$this->_sent_mails = 0;
+
return;
}
}
--
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