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authorDave Barach <dave@barachs.net>2020-04-29 17:04:10 -0400
committerFlorin Coras <florin.coras@gmail.com>2020-05-04 14:03:21 +0000
commit7784140f2bd2d5ae44f2be1507ac25f102006155 (patch)
tree4ac12e04f5177bffab6f3c05d6bf837567a65988 /src/plugins/ioam/lib-pot
parentd88fc0fcedb402e3dc82cb44280d4567a6a13266 (diff)
misc: binary api fuzz test fixes
Add a hook to src/vlibapi/api_shared.c to fuzz (screw up) binary API messages, e.g. by xoring random data into them before processing. We specifically exempt client connection messages, and inband debug CLI messages. We step over msg_id, client index, client context, and sw_if_index. Otherwise, "make test" vectors fail too rapidly to learn anything. The goal is to reduce the number of crashes caused to zero. We're fairly close with this patch. Add vl_msg_api_max_length(void *mp), which returns the maximum plausible length for a binary API message. Use it to hardern vl_api_from_api_to_new_vec(...) which takes an additional argument - message pointer - so it can verify that astr->length is sane. If it's not sane, return a u8 *vector of the form "insane astr->length nnnn\0". Verify array lengths in vl_api_dhcp6_send_client_message_t_handler(...) and vl_api_dhcp6_pd_send_client_message_t_handler(...). Add a fairly effective binary API fuzz hook to the unittest plugin, and modify the "make test" framework.py to pass "api-fuzz { on|off }" to enable API fuzzing: "make API_FUZZ=on TEST=xxx test-debug" or similar Type: improvement Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: I0157267652a163c01553d5267620f719cc6c3bde
Diffstat (limited to 'src/plugins/ioam/lib-pot')
-rw-r--r--src/plugins/ioam/lib-pot/pot_api.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/src/plugins/ioam/lib-pot/pot_api.c b/src/plugins/ioam/lib-pot/pot_api.c
index 31ddf9da528..72d05d76590 100644
--- a/src/plugins/ioam/lib-pot/pot_api.c
+++ b/src/plugins/ioam/lib-pot/pot_api.c
@@ -14,7 +14,7 @@
*/
/*
*------------------------------------------------------------------
- * pot_api.c - Proof of Transit related APIs to create
+ * pot_api.c - Proof of Transit related APIs to create
* and maintain profiles
*------------------------------------------------------------------
*/
@@ -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_new_vec(&mp->list_name);
+ name = vl_api_from_api_to_new_vec(mp, &mp->list_name);
pot_profile_list_init(name);
id = mp->id;
@@ -61,7 +61,7 @@ static void vl_api_pot_profile_add_t_handler
(void)pot_profile_set_bit_mask(profile, mp->max_bits);
} else {
rv = -3;
- }
+ }
ERROROUT:
vec_free(name);
REPLY_MACRO(VL_API_POT_PROFILE_ADD_REPLY);
@@ -121,14 +121,14 @@ static void vl_api_pot_profile_activate_t_handler
u8 id;
u8 *name = NULL;
- name = vl_api_from_api_to_new_vec(&mp->list_name);
+ name = vl_api_from_api_to_new_vec(mp, &mp->list_name);
if (!pot_profile_list_is_enabled(name)) {
rv = -1;
} else {
id = mp->id;
rv = pot_profile_set_active(id);
}
-
+
vec_free(name);
REPLY_MACRO(VL_API_POT_PROFILE_ACTIVATE_REPLY);
}