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

* translate MOBILE IDENTITY into string 

* add empty handler for GPRS SUSPENSION REQUEST
This commit is contained in:
Harald Welte 2008-12-27 10:19:37 +00:00
parent 0f7bf9ce4a
commit fc977a8b8b
1 changed files with 60 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
src/gsm_04_08.c
View File

@ -244,6 +244,57 @@ int gsm0408_loc_upd_acc(struct gsm_lchan *lchan, u_int8_t *tmsi)
return gsm0408_sendmsg(msg);
}
static char bcd2char(u_int8_t bcd)
{
if (bcd < 0xa)
return '0' + bcd;
else
return 'A' + (bcd - 0xa);
}
/* 10.5.1.4 */
static int mi_to_string(char *string, int str_len, u_int8_t *mi, int mi_len)
{
int i;
u_int8_t mi_type;
char *str_cur = string;
mi_type = mi[0] & GSM_MI_TYPE_MASK;
switch (mi_type) {
case GSM_MI_TYPE_NONE:
break;
case GSM_MI_TYPE_TMSI:
for (i = 1; i < mi_len - 1; i++) {
if (str_cur + 2 >= string + str_len)
return str_cur - string;
*str_cur++ = bcd2char(mi[i] >> 4);
*str_cur++ = bcd2char(mi[i] & 0xf);
}
break;
case GSM_MI_TYPE_IMSI:
case GSM_MI_TYPE_IMEI:
case GSM_MI_TYPE_IMEISV:
if (mi[0] & GSM_MI_ODD)
*str_cur++ = bcd2char(mi[0] >> 4);
for (i = 1; i < mi_len - 1; i++) {
if (str_cur + 2 >= string + str_len)
return str_cur - string;
*str_cur++ = bcd2char(mi[i] & 0xf);
*str_cur++ = bcd2char(mi[i] >> 4);
}
break;
default:
break;
}
*str_cur++ = '\0';
return str_cur - string;
}
#define MI_SIZE 20
/* Chapter 9.2.15 */
static int mm_loc_upd_req(struct msgb *msg)
{
@ -252,20 +303,23 @@ static int mm_loc_upd_req(struct msgb *msg)
struct gsm48_loc_upd_req *lu;
struct gsm_subscriber *subscr;
u_int8_t mi_type;
char mi_string[20];
lu = (struct gsm48_loc_upd_req *) gh->data;
mi_type = lu->mi[0] & GSM_MI_TYPE_MASK;
DEBUGP(DMM, "LUPDREQ: mi_type = 0x%02x\n", mi_type);
mi_to_string(mi_string, sizeof(mi_string), lu->mi, lu->mi_len);
DEBUGP(DMM, "LUPDREQ: mi_type = 0x%02x MI(%s)\n", mi_type, mi_string);
switch (mi_type) {
case GSM_MI_TYPE_IMSI:
/* look up subscriber based on IMSI */
subscr = subscr_get_by_imsi(&lu->mi[1]);
subscr = subscr_get_by_imsi(lu->mi);
break;
case GSM_MI_TYPE_TMSI:
/* look up the subscriber based on TMSI, request IMSI if it fails */
subscr = subscr_get_by_tmsi(&lu->mi[1]);
subscr = subscr_get_by_tmsi(lu->mi);
if (!subscr) {
/* FIXME: send IDENTITY REQUEST message to get IMSI */
//gsm0408_identity_request(...GSM_MI_TYPE_IMSI);
@ -354,6 +408,9 @@ static int gsm0408_rcv_rr(struct msgb *msg)
DEBUGP(DRR, "CLASSMARK CHANGE\n");
/* FIXME: what to do ?!? */
break;
case GSM48_MT_RR_GPRS_SUSP_REQ:
DEBUGP(DRR, "GRPS SUSPEND REQUEST\n");
break;
case GSM48_MT_RR_PAG_RESP:
default:
fprintf(stderr, "Unimplemented GSM 04.08 msg type 0x%02x\n",