diff options
Diffstat (limited to 'openbsc/src/gprs/oap.c')
-rw-r--r-- | openbsc/src/gprs/oap.c | 43 |
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", |