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authorJakub Grajciar <jgrajcia@cisco.com>2020-02-07 11:30:26 +0100
committerOle Trøan <otroan@employees.org>2020-02-26 08:51:03 +0000
commit2dbee9361e74d03727a8b618ba80a5e28c006011 (patch)
tree443b6c39e99e0e46b62ef0dfd002e31bb1fa7665 /test/ext
parent8e755a16a71c55555f12381c8a12e22ae7138536 (diff)
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>
Diffstat (limited to 'test/ext')
-rw-r--r--test/ext/vapi_c_test.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/test/ext/vapi_c_test.c b/test/ext/vapi_c_test.c
index a9572ae8716..51fc572746f 100644
--- a/test/ext/vapi_c_test.c
+++ b/test/ext/vapi_c_test.c
@@ -29,6 +29,9 @@
#include <vapi/l2.api.vapi.h>
#include <fake.api.vapi.h>
+#include <vppinfra/vec.h>
+#include <vppinfra/mem.h>
+
DEFINE_VAPI_MSG_IDS_VPE_API_JSON;
DEFINE_VAPI_MSG_IDS_INTERFACE_API_JSON;
DEFINE_VAPI_MSG_IDS_L2_API_JSON;
@@ -911,6 +914,66 @@ START_TEST (test_unsupported)
END_TEST;
+START_TEST (test_api_strings)
+{
+ printf ("--- Invalid api strings ---\n");
+
+ /* test string 'TEST'
+ * size = 5
+ * length = 4
+ */
+ const char str[] = "TEST";
+ u8 *vec_str = 0, *vstr = 0;
+ char *cstr;
+
+ vapi_msg_sw_interface_dump *dump =
+ malloc (sizeof (vapi_msg_sw_interface_dump) + strlen (str));
+ clib_mem_init (0, 1 << 20);
+
+ vl_api_c_string_to_api_string (str, &dump->payload.name_filter);
+ /* Assert nul terminator NOT present */
+ ck_assert_int_eq (vl_api_string_len (&dump->payload.name_filter),
+ strlen (str));
+
+ cstr = vl_api_from_api_to_new_c_string (&dump->payload.name_filter);
+ ck_assert_ptr_ne (cstr, NULL);
+ /* Assert nul terminator present */
+ ck_assert_int_eq (vec_len (cstr), sizeof (str));
+ ck_assert_int_eq (strlen (str), strlen (cstr));
+ vec_free (cstr);
+
+ vstr = vl_api_from_api_to_new_vec (&dump->payload.name_filter);
+ ck_assert_ptr_ne (vstr, NULL);
+ /* Assert nul terminator NOT present */
+ ck_assert_int_eq (vec_len (vstr), strlen (str));
+ vec_free (vstr);
+
+ /* vector conaining NON nul terminated string 'TEST' */
+ vec_add (vec_str, str, strlen (str));
+ clib_memset (dump->payload.name_filter.buf, 0, strlen (str));
+ dump->payload.name_filter.length = 0;
+
+ vl_api_vec_to_api_string (vec_str, &dump->payload.name_filter);
+ /* Assert nul terminator NOT present */
+ ck_assert_int_eq (vl_api_string_len (&dump->payload.name_filter),
+ vec_len (vec_str));
+
+ cstr = vl_api_from_api_to_new_c_string (&dump->payload.name_filter);
+ ck_assert_ptr_ne (cstr, NULL);
+ /* Assert nul terminator present */
+ ck_assert_int_eq (vec_len (cstr), sizeof (str));
+ ck_assert_int_eq (strlen (str), strlen (cstr));
+ vec_free (cstr);
+
+ vstr = vl_api_from_api_to_new_vec (&dump->payload.name_filter);
+ ck_assert_ptr_ne (vstr, NULL);
+ /* Assert nul terminator NOT present */
+ ck_assert_int_eq (vec_len (vstr), strlen (str));
+ vec_free (vstr);
+}
+
+END_TEST;
+
Suite *
test_suite (void)
{
@@ -957,6 +1020,10 @@ test_suite (void)
tcase_add_test (tc_unsupported, test_unsupported);
suite_add_tcase (s, tc_unsupported);
+ TCase *tc_dynamic = tcase_create ("Dynamic message size");
+ tcase_add_test (tc_dynamic, test_api_strings);
+ suite_add_tcase (s, tc_dynamic);
+
return s;
}