From e399a320dcaa2c7508645a4ef97f47716b62406e Mon Sep 17 00:00:00 2001
From: terrafrost <terrafrost@php.net>
Date: Mon, 31 Aug 2015 23:36:56 -0500
Subject: [PATCH] SSH/Agent/Identity: replace user_error's with exceptions

---
 phpseclib/System/SSH/Agent/Identity.php | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/phpseclib/System/SSH/Agent/Identity.php b/phpseclib/System/SSH/Agent/Identity.php
index 490edf6e..82fd224c 100644
--- a/phpseclib/System/SSH/Agent/Identity.php
+++ b/phpseclib/System/SSH/Agent/Identity.php
@@ -134,6 +134,7 @@ class Identity
      *
      * @param String $message
      * @return String
+     * @throws \RuntimeException on connection errors
      * @access public
      */
     function sign($message)
@@ -142,13 +143,13 @@ class Identity
         $packet = pack('CNa*Na*N', Agent::SSH_AGENTC_SIGN_REQUEST, strlen($this->key_blob), $this->key_blob, strlen($message), $message, 0);
         $packet = pack('Na*', strlen($packet), $packet);
         if (strlen($packet) != fputs($this->fsock, $packet)) {
-            user_error('Connection closed during signing');
+            throw new \RuntimeException('Connection closed during signing');
         }
 
         $length = current(unpack('N', fread($this->fsock, 4)));
         $type = ord(fread($this->fsock, 1));
         if ($type != Agent::SSH_AGENT_SIGN_RESPONSE) {
-            user_error('Unable to retreive signature');
+            throw new \RuntimeException('Unable to retreive signature');
         }
 
         $signature_blob = fread($this->fsock, $length - 1);