From a479b302983aae2878af0cb50eac141ede6cd942 Mon Sep 17 00:00:00 2001
From: Aris Adamantiadis <aris@0xbadc0de.be>
Date: Sat, 17 Oct 2009 17:54:39 +0200
Subject: [PATCH] Verify existence of callback before using them

---
 libssh/keyfiles.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libssh/keyfiles.c b/libssh/keyfiles.c
index 1fff4443..2fe6e8aa 100644
--- a/libssh/keyfiles.c
+++ b/libssh/keyfiles.c
@@ -692,7 +692,7 @@ ssh_private_key privatekey_from_file(ssh_session session, const char *filename,
       break;
     case TYPE_RSA:
       if (passphrase == NULL) {
-	if (session->callbacks->auth_function) {
+	if (session->callbacks && session->callbacks->auth_function) {
 		auth_cb = session->callbacks->auth_function;
 		auth_ud = session->callbacks->userdata;
 #ifdef HAVE_LIBGCRYPT