From 6309f5a70aec62f8426dcf6b7a8e86802c646716 Mon Sep 17 00:00:00 2001
From: Jim Wigginton <terrafrost@php.net>
Date: Mon, 5 Mar 2012 03:13:09 +0000
Subject: [PATCH] - read() doesn't give an E_WARNING when $expect is blank

git-svn-id: http://phpseclib.svn.sourceforge.net/svnroot/phpseclib/trunk@198 21d32557-59b3-4da0-833f-c5933fad653e
---
 phpseclib/Net/SSH2.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/phpseclib/Net/SSH2.php b/phpseclib/Net/SSH2.php
index 17e490cd..1f6378a0 100644
--- a/phpseclib/Net/SSH2.php
+++ b/phpseclib/Net/SSH2.php
@@ -1810,7 +1810,7 @@ class Net_SSH2 {
      * @return String
      * @access public
      */
-    function read($expect, $mode = NET_SSH2_READ_SIMPLE)
+    function read($expect = '', $mode = NET_SSH2_READ_SIMPLE)
     {
         $this->curTimeout = $this->timeout;
 
@@ -1830,7 +1830,7 @@ class Net_SSH2 {
                 preg_match($expect, $this->interactiveBuffer, $matches);
                 $match = $matches[0];
             }
-            $pos = strpos($this->interactiveBuffer, $match);
+            $pos = !empty($match) ? strpos($this->interactiveBuffer, $match) : false;
             if ($pos !== false) {
                 return $this->_string_shift($this->interactiveBuffer, $pos + strlen($match));
             }