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gsm_04_08: Establish secure channel on LOCATION UPDATE 

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
This commit is contained in:
Sylvain Munaut 2009-12-24 00:28:01 +01:00 committed by Harald Welte
parent 2030a2a228
commit 267fba0a2b
1 changed files with 45 additions and 22 deletions
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67
openbsc/src/gsm_04_08.c
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@ -203,30 +203,53 @@ static void allocate_loc_updating_req(struct gsm_subscriber_connection *conn)
struct gsm_loc_updating_operation);
}
static int _gsm0408_authorize_sec_cb(unsigned int hooknum, unsigned int event,
struct msgb *msg, void *data, void *param)
{
struct gsm_lchan *lchan = data;
struct gsm_subscriber_connection *conn = &lchan->conn;
int rc = 0;
switch (event) {
case GSM_SECURITY_AUTH_FAILED:
release_loc_updating_req(conn);
break;
case GSM_SECURITY_NOAVAIL:
case GSM_SECURITY_SUCCEEDED:
/* We're all good */
db_subscriber_alloc_tmsi(conn->subscr);
release_loc_updating_req(conn);
rc = gsm0408_loc_upd_acc(lchan, conn->subscr->tmsi);
if (lchan->ts->trx->bts->network->send_mm_info) {
/* send MM INFO with network name */
rc = gsm48_tx_mm_info(lchan);
}
/* call subscr_update after putting the loc_upd_acc
* in the transmit queue, since S_SUBSCR_ATTACHED might
* trigger further action like SMS delivery */
subscr_update(conn->subscr, lchan->ts->trx->bts,
GSM_SUBSCRIBER_UPDATE_ATTACHED);
/* try to close channel ASAP */
lchan_auto_release(lchan);
break;
default:
rc = -EINVAL;
};
return rc;
}
static int gsm0408_authorize(struct gsm_subscriber_connection *conn, struct msgb *msg)
{
if (authorize_subscriber(conn->loc_operation, conn->subscr)) {
int rc;
db_subscriber_alloc_tmsi(conn->subscr);
release_loc_updating_req(conn);
rc = gsm0408_loc_upd_acc(msg->lchan, conn->subscr->tmsi);
if (msg->lchan->ts->trx->bts->network->send_mm_info) {
/* send MM INFO with network name */
rc = gsm48_tx_mm_info(msg->lchan);
}
/* call subscr_update after putting the loc_upd_acc
* in the transmit queue, since S_SUBSCR_ATTACHED might
* trigger further action like SMS delivery */
subscr_update(conn->subscr, msg->trx->bts,
GSM_SUBSCRIBER_UPDATE_ATTACHED);
/* try to close channel ASAP */
lchan_auto_release(conn->lchan);
return rc;
}
if (authorize_subscriber(conn->loc_operation, conn->subscr))
return gsm48_secure_channel(conn->lchan,
conn->loc_operation->key_seq,
_gsm0408_authorize_sec_cb, NULL);
return 0;
}