cellular-infrastructure
/
osmo-msc
mirror of https://gerrit.osmocom.org/osmo-msc
9
0
Fork 0
Code Issues Releases Wiki Activity

gsm_04_08: Establish secure channel on CM SERVICE REQUEST 

Note that establishing a secure channel is considered to
be an implicit CM SERVICE ACK.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
This commit is contained in:
Sylvain Munaut 2009-12-24 00:28:46 +01:00 committed by Harald Welte
parent 267fba0a2b
commit ba87f458ec
1 changed files with 30 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
openbsc/src/gsm_04_08.c
View File

@ -706,6 +706,34 @@ static int gsm48_tx_mm_serv_rej(struct gsm_subscriber_connection *conn,
return gsm48_sendmsg(msg, NULL);
}
static int _gsm48_rx_mm_serv_req_sec_cb(
unsigned int hooknum, unsigned int event,
struct msgb *msg, void *data, void *param)
{
struct gsm_lchan *lchan = data;
int rc = 0;
switch (event) {
case GSM_SECURITY_AUTH_FAILED:
/* Nothing to do */
break;
case GSM_SECURITY_NOAVAIL:
rc = gsm48_tx_mm_serv_ack(lchan);
break;
case GSM_SECURITY_SUCCEEDED:
/* nothing to do. CIPHER MODE COMMAND is
* implicit CM SERV ACK */
break;
default:
rc = -EINVAL;
};
return rc;
}
/*
* Handle CM Service Requests
* a) Verify that the packet is long enough to contain the information
@ -781,7 +809,8 @@ static int gsm48_rx_mm_serv_req(struct msgb *msg)
memcpy(subscr->equipment.classmark2, classmark2, classmark2_len);
db_sync_equipment(&subscr->equipment);
return gsm48_tx_mm_serv_ack(msg->lchan);
return gsm48_secure_channel(msg->lchan, req->cipher_key_seq,
_gsm48_rx_mm_serv_req_sec_cb, NULL);
}
static int gsm48_rx_mm_imsi_detach_ind(struct msgb *msg)