Start to use struct osmo_auth_vector from gsm_auth_tuple
Rather than having a 'private' structure for kc, sres and rand, we
now finally (with 4 years delay) use osmo_auth_vector from libosmogsm,
which encapsulates authentication vectors that can be either GSM
triplets or UMTS quintuples or a combination of both.
gsm_auth_tuple becomes a wrapper around osmo_auth_vector, adding
use_count and key_seq to it.
key_seq is no longer initialized inside gprs_gsup_messages.c, as there
is no CKSN / key_seq inside the message anyway. If a usre of the code
needs key_seq, they need to manage it themselves.
diff --git a/openbsc/src/gprs/gprs_gmm.c b/openbsc/src/gprs/gprs_gmm.c
index 5f0a5fd..6b6e741 100644
--- a/openbsc/src/gprs/gprs_gmm.c
+++ b/openbsc/src/gprs/gprs_gmm.c
@@ -512,9 +512,9 @@
at = &ctx->auth_triplet;
- if (TLVP_LEN(&tp, GSM48_IE_GMM_AUTH_SRES) != sizeof(at->sres) ||
- memcmp(TLVP_VAL(&tp, GSM48_IE_GMM_AUTH_SRES), at->sres,
- sizeof(at->sres)) != 0) {
+ if (TLVP_LEN(&tp, GSM48_IE_GMM_AUTH_SRES) != sizeof(at->vec.sres) ||
+ memcmp(TLVP_VAL(&tp, GSM48_IE_GMM_AUTH_SRES), at->vec.sres,
+ sizeof(at->vec.sres)) != 0) {
LOGMMCTXP(LOGL_NOTICE, ctx, "Received SRES doesn't match\n");
rc = gsm48_tx_gmm_auth_ciph_rej(ctx);
@@ -637,7 +637,8 @@
struct gsm_auth_tuple *at = &ctx->auth_triplet;
mmctx_timer_start(ctx, 3360, sgsn->cfg.timers.T3360);
- return gsm48_tx_gmm_auth_ciph_req(ctx, at->rand, at->key_seq,
+ return gsm48_tx_gmm_auth_ciph_req(ctx, at->vec.rand,
+ at->key_seq,
GPRS_ALGO_GEA0);
}
@@ -1468,7 +1469,8 @@
}
at = &mm->auth_triplet;
- gsm48_tx_gmm_auth_ciph_req(mm, at->rand, at->key_seq, GPRS_ALGO_GEA0);
+ gsm48_tx_gmm_auth_ciph_req(mm, at->vec.rand, at->key_seq,
+ GPRS_ALGO_GEA0);
osmo_timer_schedule(&mm->timer, sgsn->cfg.timers.T3360, 0);
break;
case 3370: /* waiting for IDENTITY RESPONSE */