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authorOle Troan <ot@cisco.com>2019-08-23 22:55:18 +0200
committerOle Trøan <otroan@employees.org>2019-09-09 09:59:48 +0000
commit30d28bdfd8aca4d6d3c70482ad9ebfdb753610aa (patch)
tree1ae268835577d69dd982370487215d2049f87ea1 /src/vat
parent157f1cd34952759fd8c35976e68c9885537168ad (diff)
api: enforce vla is last and fixed string type
Enforce that variable length fields are the last element of API messages. Add a 'fixed' version of string type, since dealing with multiple variable length strings turned out too painful for the C language bindings. The string type is now: { string name[64]; // NUL terminated C-string. Essentially decays to u8 name[64] string name[]; // Variable length string with embedded len field (vl_api_string_t) }; The latter notation could be made available to other types as well. e.g. { vl_api_address_t addresses[]; } instead of { u32 n_addr; vl_api_address_t addresses[n_addr]; }; Type: fix Change-Id: I18fa17ef47227633752ab50453e8d20a652a9f9b Signed-off-by: Ole Troan <ot@cisco.com> (cherry picked from commit e5ff5a36dd126ee57dca4e0b03da2f7704e0a4f5) Signed-off-by: Ole Troan <ot@cisco.com>
Diffstat (limited to 'src/vat')
-rw-r--r--src/vat/api_format.c47
1 files changed, 8 insertions, 39 deletions
diff --git a/src/vat/api_format.c b/src/vat/api_format.c
index 19a7b29d01c..86457dc9218 100644
--- a/src/vat/api_format.c
+++ b/src/vat/api_format.c
@@ -1333,30 +1333,10 @@ static void vl_api_show_version_reply_t_handler
if (retval >= 0)
{
- u8 *s = 0;
- char *p = (char *) &mp->program;
-
- s = vl_api_from_api_to_vec ((vl_api_string_t *) p);
- errmsg (" program: %v\n", s);
- vec_free (s);
-
- p +=
- vl_api_string_len ((vl_api_string_t *) p) + sizeof (vl_api_string_t);
- s = vl_api_from_api_to_vec ((vl_api_string_t *) p);
- errmsg (" version: %v\n", s);
- vec_free (s);
-
- p +=
- vl_api_string_len ((vl_api_string_t *) p) + sizeof (vl_api_string_t);
- s = vl_api_from_api_to_vec ((vl_api_string_t *) p);
- errmsg (" build date: %v\n", s);
- vec_free (s);
-
- p +=
- vl_api_string_len ((vl_api_string_t *) p) + sizeof (vl_api_string_t);
- s = vl_api_from_api_to_vec ((vl_api_string_t *) p);
- errmsg ("build directory: %v\n", s);
- vec_free (s);
+ errmsg (" program: %s", mp->program);
+ errmsg (" version: %s", mp->version);
+ errmsg (" build date: %s", mp->build_date);
+ errmsg ("build directory: %s", mp->build_directory);
}
vam->retval = retval;
vam->result_ready = 1;
@@ -1370,22 +1350,11 @@ static void vl_api_show_version_reply_t_handler_json
vat_json_init_object (&node);
vat_json_object_add_int (&node, "retval", ntohl (mp->retval));
- char *p = (char *) &mp->program;
- vat_json_object_add_string_copy (&node, "program",
- vl_api_from_api_string ((vl_api_string_t *)
- p));
- p += vl_api_string_len ((vl_api_string_t *) p) + sizeof (u32);
- vat_json_object_add_string_copy (&node, "version",
- vl_api_from_api_string ((vl_api_string_t *)
- p));
- p += vl_api_string_len ((vl_api_string_t *) p) + sizeof (u32);
- vat_json_object_add_string_copy (&node, "build_date",
- vl_api_from_api_string ((vl_api_string_t *)
- p));
- p += vl_api_string_len ((vl_api_string_t *) p) + sizeof (u32);
+ vat_json_object_add_string_copy (&node, "program", mp->program);
+ vat_json_object_add_string_copy (&node, "version", mp->version);
+ vat_json_object_add_string_copy (&node, "build_date", mp->build_date);
vat_json_object_add_string_copy (&node, "build_directory",
- vl_api_from_api_string ((vl_api_string_t *)
- p));
+ mp->build_directory);
vat_json_print (vam->ofp, &node);
vat_json_free (&node);