From 8670f5da240e65412c83281305b01075974de218 Mon Sep 17 00:00:00 2001
From: Marc Hoersken <info@marc-hoersken.de>
Date: Fri, 26 Dec 2014 13:31:26 +0100
Subject: [PATCH] pem.c: make sure there's a trailing zero and b64data is not
 NULL

... if there is no base64 data between PEM header and footer.
Reported by Coverity CID 89823.
---
 src/pem.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/pem.c b/src/pem.c
index 9059477e..2e68c74d 100644
--- a/src/pem.c
+++ b/src/pem.c
@@ -67,6 +67,8 @@ _libssh2_pem_parse(LIBSSH2_SESSION * session,
     int ret;
 
     do {
+        *line = '\0';
+
         if (readline(line, LINE_SIZE, fp)) {
             return -1;
         }
@@ -91,12 +93,18 @@ _libssh2_pem_parse(LIBSSH2_SESSION * session,
             b64datalen += linelen;
         }
 
+        *line = '\0';
+
         if (readline(line, LINE_SIZE, fp)) {
             ret = -1;
             goto out;
         }
     } while (strcmp(line, headerend) != 0);
 
+    if (!b64data) {
+        return -1;
+    }
+
     if (libssh2_base64_decode(session, (char**) data, datalen,
                               b64data, b64datalen)) {
         ret = -1;