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Diffstat (limited to 'openbsc/src/gprs/oap.c')
-rw-r--r--openbsc/src/gprs/oap.c43
1 files changed, 23 insertions, 20 deletions
diff --git a/openbsc/src/gprs/oap.c b/openbsc/src/gprs/oap.c
index 1426702dd..c7c97774d 100644
--- a/openbsc/src/gprs/oap.c
+++ b/openbsc/src/gprs/oap.c
@@ -20,10 +20,12 @@
*
*/
+#include <string.h>
+
+#include <osmocom/core/utils.h>
#include <osmocom/crypt/auth.h>
#include <openbsc/oap.h>
-#include <openbsc/utils.h>
#include <openbsc/debug.h>
#include <openbsc/oap_messages.h>
@@ -69,12 +71,19 @@ static int oap_evaluate_challenge(const struct oap_state *state,
const uint8_t *rx_autn,
uint8_t *tx_xres)
{
+ struct osmo_auth_vector vec;
+
+ struct osmo_sub_auth_data auth = {
+ .type = OSMO_AUTH_TYPE_UMTS,
+ .algo = OSMO_AUTH_ALG_MILENAGE,
+ };
+
osmo_static_assert(sizeof(((struct osmo_sub_auth_data*)0)->u.umts.k)
== sizeof(state->secret_k), _secret_k_size_match);
osmo_static_assert(sizeof(((struct osmo_sub_auth_data*)0)->u.umts.opc)
== sizeof(state->secret_opc), _secret_opc_size_match);
- switch(state->state) {
+ switch (state->state) {
case OAP_UNINITIALIZED:
case OAP_DISABLED:
return -1;
@@ -82,13 +91,6 @@ static int oap_evaluate_challenge(const struct oap_state *state,
break;
}
- struct osmo_auth_vector vec;
-
- struct osmo_sub_auth_data auth = {
- .type = OSMO_AUTH_TYPE_UMTS,
- .algo = OSMO_AUTH_ALG_MILENAGE,
- };
-
memcpy(auth.u.umts.k, state->secret_k, sizeof(auth.u.umts.k));
memcpy(auth.u.umts.opc, state->secret_opc, sizeof(auth.u.umts.opc));
memset(auth.u.umts.amf, '\0', sizeof(auth.u.umts.amf));
@@ -103,7 +105,7 @@ static int oap_evaluate_challenge(const struct oap_state *state,
return -3;
}
- if (constant_time_cmp(vec.autn, rx_autn, sizeof(vec.autn)) != 0) {
+ if (osmo_constant_time_cmp(vec.autn, rx_autn, sizeof(vec.autn)) != 0) {
LOGP(DGPRS, LOGL_ERROR, "OAP: AUTN mismatch!\n");
LOGP(DGPRS, LOGL_INFO, "OAP: AUTN from server: %s\n",
osmo_hexdump_nospc(rx_autn, sizeof(vec.autn)));
@@ -117,11 +119,11 @@ static int oap_evaluate_challenge(const struct oap_state *state,
return 0;
}
-struct msgb *oap_encoded(const struct oap_message *oap_msg)
+struct msgb *oap_encoded(const struct osmo_oap_message *oap_msg)
{
struct msgb *msg = msgb_alloc_headroom(1000, 64, __func__);
OSMO_ASSERT(msg);
- oap_encode(msg, oap_msg);
+ osmo_oap_encode(msg, oap_msg);
return msg;
}
@@ -129,12 +131,13 @@ struct msgb *oap_encoded(const struct oap_message *oap_msg)
* On error, return NULL. */
static struct msgb* oap_msg_register(uint16_t client_id)
{
+ struct osmo_oap_message oap_msg = {0};
+
if (client_id < 1) {
LOGP(DGPRS, LOGL_ERROR, "OAP: Invalid client ID: %d\n", client_id);
return NULL;
}
- struct oap_message oap_msg = {0};
oap_msg.message_type = OAP_MSGT_REGISTER_REQUEST;
oap_msg.client_id = client_id;
return oap_encoded(&oap_msg);
@@ -155,7 +158,7 @@ int oap_register(struct oap_state *state, struct msgb **msg_tx)
* On error, return NULL. */
static struct msgb* oap_msg_challenge_response(uint8_t *xres)
{
- struct oap_message oap_reply = {0};
+ struct osmo_oap_message oap_reply = {0};
oap_reply.message_type = OAP_MSGT_CHALLENGE_RESULT;
memcpy(oap_reply.xres, xres, sizeof(oap_reply.xres));
@@ -164,10 +167,12 @@ static struct msgb* oap_msg_challenge_response(uint8_t *xres)
}
static int handle_challenge(struct oap_state *state,
- struct oap_message *oap_rx,
+ struct osmo_oap_message *oap_rx,
struct msgb **msg_tx)
{
int rc;
+ uint8_t xres[8];
+
if (!(oap_rx->rand_present && oap_rx->autn_present)) {
LOGP(DGPRS, LOGL_ERROR,
"OAP challenge incomplete (rand_present: %d, autn_present: %d)\n",
@@ -176,7 +181,6 @@ static int handle_challenge(struct oap_state *state,
goto failure;
}
- uint8_t xres[8];
rc = oap_evaluate_challenge(state,
oap_rx->rand,
oap_rx->autn,
@@ -201,17 +205,16 @@ failure:
int oap_handle(struct oap_state *state, const struct msgb *msg_rx, struct msgb **msg_tx)
{
- *msg_tx = NULL;
-
uint8_t *data = msgb_l2(msg_rx);
size_t data_len = msgb_l2len(msg_rx);
+ struct osmo_oap_message oap_msg = {0};
int rc = 0;
- struct oap_message oap_msg = {0};
+ *msg_tx = NULL;
OSMO_ASSERT(data);
- rc = oap_decode(data, data_len, &oap_msg);
+ rc = osmo_oap_decode(&oap_msg, data, data_len);
if (rc < 0) {
LOGP(DGPRS, LOGL_ERROR,
"Decoding OAP message failed with error '%s' (%d)\n",