lib: Fix array size in audit_logging

../lib/audit_logging/audit_logging.c: In function ‘json_add_timestamp’:
../lib/audit_logging/audit_logging.c:603:12: error: ‘%s’ directive
       output may be truncated writing up to 9 bytes into a region of size
       between 0 and 43 [-Werror=format-truncation=]
   "%s.%06ld%s",
            ^~
../lib/audit_logging/audit_logging.c:606:3:
   tz);
   ~~
../lib/audit_logging/audit_logging.c:600:2: note: ‘snprintf’ output
       between 8 and 70 bytes into a destination of size 50
  snprintf(
  ^~~~~~~~~
   timestamp,
   ~~~~~~~~~~
   sizeof(timestamp),
   ~~~~~~~~~~~~~~~~~~
   "%s.%06ld%s",
   ~~~~~~~~~~~~~
   buffer,
   ~~~~~~~
   tv.tv_usec,
   ~~~~~~~~~~~
   tz);
   ~~~

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13437

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Thu May 17 20:17:35 CEST 2018 on sn-devel-144

diff --git a/lib/audit_logging/audit_logging.c b/lib/audit_logging/audit_logging.c
index 7da161cd2046d8098ac17c49a1779ac6b1ae84df..5c16806d54ebc835908313b54b5632ce4be64f1b 100644 (file)
--- a/lib/audit_logging/audit_logging.c
+++ b/lib/audit_logging/audit_logging.c
@@ -569,7 +569,7 @@ void json_add_version(struct json_object *object, int major, int minor)
 void json_add_timestamp(struct json_object *object)
 {
        char buffer[40];        /* formatted time less usec and timezone */
-       char timestamp[50];     /* the formatted ISO 8601 time stamp     */
+       char timestamp[65];     /* the formatted ISO 8601 time stamp     */
        char tz[10];            /* formatted time zone                   */
        struct tm* tm_info;     /* current local time                    */
        struct timeval tv;      /* current system time                   */