api: improve api string safety

- Remove vl_api_from_api_string
  to prevent use of not nul-terminated strings.
- Rename vl_api_from_api_to_vec -> vl_api_from_api_to_new_vec
  to imply a new vector is created. NOT nul terminated.
- Add vl_api_from_api_to_new_c_string. Returns
  nul terminated string in a new vector.
- Add vl_api_c_string_to_api_string. Convert nul terminated
  string to vl_api_string_t
- Add vl_api_vec_to_api_string. Convert NON nul terminated
  vector to vl_api_string_t

Type: fix

Signed-off-by: Jakub Grajciar <jgrajcia@cisco.com>
Change-Id: Iadd59b612c0d960a34ad0dd07a9d17f56435c6ea
Signed-off-by: Jakub Grajciar <jgrajcia@cisco.com>

1 files changed, 2 insertions, 5 deletions

diff --git a/src/plugins/memif/memif_test.c b/src/plugins/memif/memif_test.c
index 05f5c29b957..1ec6703d135 100644
--- a/src/plugins/memif/memif_test.c
+++ b/src/plugins/memif/memif_test.c
@@ -112,9 +112,7 @@ api_memif_socket_filename_add_del (vat_main_t * vam)
   mp->is_add = is_add;
   mp->socket_id = htonl (socket_id);
   char *p = (char *) &mp->socket_filename;
-  p +=
-    vl_api_to_api_string (strlen ((char *) socket_filename),
-			  (char *) socket_filename, (vl_api_string_t *) p);
+  p += vl_api_vec_to_api_string (socket_filename, (vl_api_string_t *) p);
 
   vec_free (socket_filename);
 
@@ -218,8 +216,7 @@ api_memif_create (vat_main_t * vam)
   if (secret != 0)
     {
       char *p = (char *) &mp->secret;
-      p += vl_api_to_api_string (strlen ((char *) secret), (char *) secret,
-				 (vl_api_string_t *) p);
+      p += vl_api_vec_to_api_string (secret, (vl_api_string_t *) p);
       vec_free (secret);
     }
   memcpy (mp->hw_addr, hw_addr, 6);