VPP-904: fixes zero length CLI parameters parse

Change-Id: I21fbc9aff2b97a8b3f4cbed202c00b6d84557a6e
Signed-off-by: Alexander Kotov <kot@yandex.ru>
(cherry picked from commit 28160f38488743b8cee0a7bd62b432a9dd8f4bfd)

diff --git a/src/vppinfra/unformat.c b/src/vppinfra/unformat.c
index f626f05..5b17562 100644 (file)
--- a/src/vppinfra/unformat.c
+++ b/src/vppinfra/unformat.c
@@ -401,7 +401,7 @@ unformat_line (unformat_input_t * i, va_list * va)
     }
 
   *result = line;
-  return 1;
+  return vec_len (line);
 }
 
 /* Parse a line ending with \n and return it as an unformat_input_t. */
@@ -410,7 +410,8 @@ unformat_line_input (unformat_input_t * i, va_list * va)
 {
   unformat_input_t *result = va_arg (*va, unformat_input_t *);
   u8 *line;
-  unformat_user (i, unformat_line, &line);
+  if (!unformat_user (i, unformat_line, &line))
+    return 0;
   unformat_init_vector (result, line);
   return 1;
 }