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>

2 files changed, 4 insertions, 4 deletions

diff --git a/src/plugins/ioam/lib-pot/pot_api.c b/src/plugins/ioam/lib-pot/pot_api.c
index 2ecfc51d97a..31ddf9da528 100644
--- a/src/plugins/ioam/lib-pot/pot_api.c
+++ b/src/plugins/ioam/lib-pot/pot_api.c
@@ -43,7 +43,7 @@ static void vl_api_pot_profile_add_t_handler
     pot_profile *profile = NULL;
     u8 *name = 0;
 
-    name = vl_api_from_api_to_vec(&mp->list_name);
+    name = vl_api_from_api_to_new_vec(&mp->list_name);
 
     pot_profile_list_init(name);
     id = mp->id;
@@ -121,7 +121,7 @@ static void vl_api_pot_profile_activate_t_handler
     u8 id;
     u8 *name = NULL;
 
-    name = vl_api_from_api_to_vec(&mp->list_name);
+    name = vl_api_from_api_to_new_vec(&mp->list_name);
     if (!pot_profile_list_is_enabled(name)) {
         rv = -1;
     } else {
diff --git a/src/plugins/ioam/lib-pot/pot_test.c b/src/plugins/ioam/lib-pot/pot_test.c
index 90cff23888b..b30b21e9471 100644
--- a/src/plugins/ioam/lib-pot/pot_test.c
+++ b/src/plugins/ioam/lib-pot/pot_test.c
@@ -88,7 +88,7 @@ static int api_pot_profile_add (vat_main_t *vam)
 
     M2(POT_PROFILE_ADD, mp, sizeof(vl_api_string_t) + vec_len(name));
 
-    vl_api_to_api_string(vec_len(name), (const char *)name, &mp->list_name);
+    vl_api_vec_to_api_string(name, &mp->list_name);
     mp->secret_share = clib_host_to_net_u64(secret_share);
     mp->polynomial_public = clib_host_to_net_u64(poly2);
     mp->lpc = clib_host_to_net_u64(lpc);
@@ -142,7 +142,7 @@ static int api_pot_profile_activate (vat_main_t *vam)
       }
 
     M2(POT_PROFILE_ACTIVATE, mp, sizeof(vl_api_string_t) + vec_len(name));
-    vl_api_to_api_string(vec_len(name), (const char *)name, &mp->list_name);
+    vl_api_vec_to_api_string(name, &mp->list_name);
     mp->id = id;
 
     S(mp);