From 04fa8f58f98362127ab08a7a5b8bbe39eaeb9b08 Mon Sep 17 00:00:00 2001
From: "7u83@mail.ru" <7u83@mail.ru@noemail.net>
Date: Tue, 13 Jan 2015 19:53:39 +0000
Subject: [PATCH] Cetching segfault, if no password for pem key given.

FossilOrigin-Name: a996a773e8001040020a438ab2a71ba646f1dff16b886989d1f9a189e00514e9
---
 src/capwap/dtls_openssl.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/capwap/dtls_openssl.c b/src/capwap/dtls_openssl.c
index 959495d5..4b0f71d9 100644
--- a/src/capwap/dtls_openssl.c
+++ b/src/capwap/dtls_openssl.c
@@ -50,9 +50,14 @@ static void dtls_debug_cb(int write_p,int version,int type, const void * buf,siz
 
 int pem_passwd_cb(char *buf, int size, int rwflag, void *password)
 {
-         strncpy(buf, (char *)(password), size);
-         buf[size - 1] = '\0';
-         return(strlen(buf));
+	if (!password){
+		cw_dbg(DBG_DTLS, "DTLS - No password given to decrypt privat key");
+		return 0;
+	}
+			
+	strncpy(buf, (char *)(password), size);
+	buf[size - 1] = '\0';
+	return(strlen(buf));
 }
 
  /* Set up ephemeral RSA stuff */