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, 1 insertions, 1 deletions

diff --git a/src/vnet/devices/tap/tapv2_api.c b/src/vnet/devices/tap/tapv2_api.c
index e0121a83c2f..3b66bf0d6ec 100644
--- a/src/vnet/devices/tap/tapv2_api.c
+++ b/src/vnet/devices/tap/tapv2_api.c
@@ -134,7 +134,7 @@ vl_api_tap_create_v2_t_handler (vl_api_tap_create_v2_t * mp)
   /* If a tag was supplied... */
   if (vl_api_string_len (&mp->tag))
     {
-      u8 *tag = format (0, "%s%c", vl_api_from_api_string (&mp->tag), 0);
+      u8 *tag = vl_api_from_api_to_new_vec (&mp->tag);
       vnet_set_sw_interface_tag (vnm, tag, ap->sw_if_index);
     }