From ea33cd1be8d13d9efee75669d4e1259f2b1dfd4c Mon Sep 17 00:00:00 2001
From: thomascube <thomas@roundcube.net>
Date: Wed, 24 Nov 2010 07:38:38 -0500
Subject: [PATCH] Updated Hebrew, Estonian, Portuguese, Flemish, Bulgarian, Hungarian and Chinese localizations upon user submissions

---
 program/lib/Net/SMTP.php |  141 ++++++++++++++++++++++++++++++++++++++--------
 1 files changed, 115 insertions(+), 26 deletions(-)

diff --git a/program/lib/Net/SMTP.php b/program/lib/Net/SMTP.php
index 9b835d7..31307f0 100644
--- a/program/lib/Net/SMTP.php
+++ b/program/lib/Net/SMTP.php
@@ -226,9 +226,10 @@
     {
         $this->_debug("Send: $data");
 
-        if (PEAR::isError($error = $this->_socket->write($data))) {
-            return PEAR::raiseError('Failed to write to socket: ' .
-                                    $error->getMessage());
+        $error = $this->_socket->write($data);
+        if ($error === false || PEAR::isError($error)) {
+            $msg = ($error) ? $error->getMessage() : "unknown error";
+            return PEAR::raiseError("Failed to write to socket: $msg");
         }
 
         return true;
@@ -502,22 +503,26 @@
      * @param string The password to authenticate with.
      * @param string The requested authentication method.  If none is
      *               specified, the best supported method will be used.
+     * @param bool   Flag indicating whether or not TLS should be attempted.
+     * @param string An optional authorization identifier.  If specified, this
+     *               identifier will be used as the authorization proxy.
      *
      * @return mixed Returns a PEAR_Error with an error message on any
      *               kind of failure, or true on success.
      * @access public
      * @since  1.0
      */
-    function auth($uid, $pwd , $method = '')
+    function auth($uid, $pwd , $method = '', $tls = true, $authz = '')
     {
-        /* We can only attempt a TLS connection if we're running PHP 5.1.0 or 
-         * later, have access to the OpenSSL extension, are connected to an 
-         * SMTP server which supports the STARTTLS extension, and aren't 
-         * already connected over a secure (SSL) socket connection. */
-        $tls = version_compare(PHP_VERSION, '5.1.0', '>=') && extension_loaded('openssl') &&
-               isset($this->_esmtp['STARTTLS']) && strncasecmp($this->host, 'ssl://', 6) != 0;
-
-        if ($tls) {
+        /* We can only attempt a TLS connection if one has been requested,
+         * we're running PHP 5.1.0 or later, have access to the OpenSSL 
+         * extension, are connected to an SMTP server which supports the 
+         * STARTTLS extension, and aren't already connected over a secure 
+         * (SSL) socket connection. */
+        if ($tls && version_compare(PHP_VERSION, '5.1.0', '>=') &&
+            extension_loaded('openssl') && isset($this->_esmtp['STARTTLS']) &&
+            strncasecmp($this->host, 'ssl://', 6) !== 0) {
+            /* Start the TLS connection attempt. */
             if (PEAR::isError($result = $this->_put('STARTTLS'))) {
                 return $result;
             }
@@ -555,7 +560,7 @@
 
         switch ($method) {
         case 'DIGEST-MD5':
-            $result = $this->_authDigest_MD5($uid, $pwd);
+            $result = $this->_authDigest_MD5($uid, $pwd, $authz);
             break;
 
         case 'CRAM-MD5':
@@ -567,7 +572,7 @@
             break;
 
         case 'PLAIN':
-            $result = $this->_authPlain($uid, $pwd);
+            $result = $this->_authPlain($uid, $pwd, $authz);
             break;
 
         default:
@@ -588,13 +593,14 @@
      *
      * @param string The userid to authenticate as.
      * @param string The password to authenticate with.
+     * @param string The optional authorization proxy identifier.
      *
      * @return mixed Returns a PEAR_Error with an error message on any
      *               kind of failure, or true on success.
      * @access private
      * @since  1.1.0
      */
-    function _authDigest_MD5($uid, $pwd)
+    function _authDigest_MD5($uid, $pwd, $authz = '')
     {
         if (PEAR::isError($error = $this->_put('AUTH', 'DIGEST-MD5'))) {
             return $error;
@@ -611,7 +617,7 @@
         $challenge = base64_decode($this->_arguments[0]);
         $digest = &Auth_SASL::factory('digestmd5');
         $auth_str = base64_encode($digest->getResponse($uid, $pwd, $challenge,
-                                                       $this->host, "smtp"));
+                                                       $this->host, "smtp", $authz));
 
         if (PEAR::isError($error = $this->_put($auth_str))) {
             return $error;
@@ -722,13 +728,14 @@
      *
      * @param string The userid to authenticate as.
      * @param string The password to authenticate with.
+     * @param string The optional authorization proxy identifier.
      *
      * @return mixed Returns a PEAR_Error with an error message on any
      *               kind of failure, or true on success.
      * @access private
      * @since  1.1.0
      */
-    function _authPlain($uid, $pwd)
+    function _authPlain($uid, $pwd, $authz = '')
     {
         if (PEAR::isError($error = $this->_put('AUTH', 'PLAIN'))) {
             return $error;
@@ -742,7 +749,7 @@
             return $error;
         }
 
-        $auth_str = base64_encode(chr(0) . $uid . chr(0) . $pwd);
+        $auth_str = base64_encode($authz . chr(0) . $uid . chr(0) . $pwd);
 
         if (PEAR::isError($error = $this->_put($auth_str))) {
             return $error;
@@ -895,30 +902,51 @@
     /**
      * Send the DATA command.
      *
-     * @param string $data  The message body to send.
+     * @param mixed $data     The message data, either as a string or an open
+     *                        file resource.
+     * @param string $headers The message headers.  If $headers is provided,
+     *                        $data is assumed to contain only body data.
      *
      * @return mixed Returns a PEAR_Error with an error message on any
      *               kind of failure, or true on success.
      * @access public
      * @since  1.0
      */
-    function data($data)
+    function data($data, $headers = null)
     {
+        /* Verify that $data is a supported type. */
+        if (!is_string($data) && !is_resource($data)) {
+            return PEAR::raiseError('Expected a string or file resource');
+        }
+
         /* RFC 1870, section 3, subsection 3 states "a value of zero
          * indicates that no fixed maximum message size is in force".
          * Furthermore, it says that if "the parameter is omitted no
          * information is conveyed about the server's fixed maximum
          * message size". */
         if (isset($this->_esmtp['SIZE']) && ($this->_esmtp['SIZE'] > 0)) {
-            if (strlen($data) >= $this->_esmtp['SIZE']) {
+            /* Start by considering the size of the optional headers string.  
+             * We also account for the addition 4 character "\r\n\r\n"
+             * separator sequence. */
+            $size = (is_null($headers)) ? 0 : strlen($headers) + 4;
+
+            if (is_resource($data)) {
+                $stat = fstat($data);
+                if ($stat === false) {
+                    return PEAR::raiseError('Failed to get file size');
+                }
+                $size += $stat['size'];
+            } else {
+                $size += strlen($data);
+            }
+
+            if ($size >= $this->_esmtp['SIZE']) {
                 $this->disconnect();
-                return PEAR::raiseError('Message size excedes the server limit');
+                return PEAR::raiseError('Message size exceeds server limit');
             }
         }
 
-        /* Quote the data based on the SMTP standards. */
-        $this->quotedata($data);
-
+        /* Initiate the DATA command. */
         if (PEAR::isError($error = $this->_put('DATA'))) {
             return $error;
         }
@@ -926,9 +954,70 @@
             return $error;
         }
 
-        if (PEAR::isError($result = $this->_send($data . "\r\n.\r\n"))) {
+        /* If we have a separate headers string, send it first. */
+        if (!is_null($headers)) {
+            $this->quotedata($headers);
+            if (PEAR::isError($result = $this->_send($headers . "\r\n\r\n"))) {
+                return $result;
+            }
+        }
+
+        /* Now we can send the message body data. */
+        if (is_resource($data)) {
+            /* Stream the contents of the file resource out over our socket 
+             * connection, line by line.  Each line must be run through the 
+             * quoting routine. */
+            while ($line = fgets($data, 1024)) {
+                $this->quotedata($line);
+                if (PEAR::isError($result = $this->_send($line))) {
+                    return $result;
+                }
+            }
+        } else {
+            if (!isset($size))
+                $size = strlen($data);
+            /*
+             * Break up the data by sending one chunk (up to 512k) at a time.  
+             * This approach reduces our peak memory usage.
+             */
+            for ($offset = 0; $offset < $size;) {
+                $end = $offset + 512000;
+
+                /*
+                 * Ensure we don't read beyond our data size or span multiple 
+                 * lines.  quotedata() can't properly handle character data 
+                 * that's split across two line break boundaries.
+                 */
+                if ($end >= $size) {
+                    $end = $size;
+                } else {
+                    for (; $end < $size; $end++) {
+                        if ($data[$end] != "\n") {
+                            break;
+                        }
+                    }
+                }
+
+                /* Extract our chunk and run it through the quoting routine. */
+                $chunk = substr($data, $offset, $end - $offset);
+                $this->quotedata($chunk);
+
+                /* If we run into a problem along the way, abort. */
+                if (PEAR::isError($result = $this->_send($chunk))) {
+                    return $result;
+                }
+
+                /* Advance the offset to the end of this chunk. */
+                $offset = $end;
+            }
+        }
+
+        /* Finally, send the DATA terminator sequence. */
+        if (PEAR::isError($result = $this->_send("\r\n.\r\n"))) {
             return $result;
         }
+
+        /* Verify that the data was successfully received by the server. */
         if (PEAR::isError($error = $this->_parseResponse(250, $this->pipelining))) {
             return $error;
         }

--
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