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hnb-test: don't segfault when msgb has no l3

This commit is contained in:
Neels Hofmeyr 2016-04-04 19:27:53 +02:00
parent a4540be792
commit 8c2b4ec6d6
1 changed files with 20 additions and 0 deletions
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20
src/tests/hnb-test.c
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@ -249,6 +249,10 @@ static struct tlv_parsed *parse_mm(struct msgb *rxm)
}
gh = (struct gsm48_hdr *) msgb_l3(rxm);
if (!gh) {
printf("received msg buffer with invalid layer 3. Ignoring.\n");
return -1;
}
length -= (const char *)&gh->data[0] - (const char *)gh;
parse_res = tlv_parse(&tp, &gsm48_mm_att_tlvdef, &gh->data[0], length, 0, 0);
@ -274,6 +278,10 @@ int hnb_test_nas_rx_lu_accept(struct msgb *rxm, int *sent_tmsi)
}
gh = (struct gsm48_hdr *)msgb_l3(rxm);
if (!gh) {
printf("received msg buffer with invalid layer 3. Ignoring.\n");
return -1;
}
lai = (struct gsm48_loc_area_id *)&gh->data[0];
uint16_t mcc, mnc, lac;
@ -337,6 +345,10 @@ static void hnb_test_nas_rx_auth_req(struct msgb *rxm)
}
gh = (struct gsm48_hdr *) msgb_l3(rxm);
if (!gh) {
printf("received msg buffer with invalid layer 3. Ignoring.\n");
return -1;
}
length -= (const char *)&gh->data[0] - (const char *)gh;
if (length < sizeof(*ar)) {
@ -364,6 +376,10 @@ static int hnb_test_nas_rx_mm(struct hnb_test *hnb, struct msgb *rxm)
OSMO_ASSERT(!chan->is_ps);
struct gsm48_hdr *gh = msgb_l3(rxm);
if (!gh) {
printf("received msg buffer with invalid layer 3. Ignoring.\n");
return -1;
}
uint8_t msg_type = gsm48_hdr_msg_type(gh);
int sent_tmsi;
@ -407,6 +423,10 @@ static int hnb_test_nas_rx_dtap(struct hnb_test *hnb, struct msgb *msg)
// '05 04 0d' ==> LU reject
struct gsm48_hdr *gh = msgb_l3(msg);
if (!gh) {
printf("received msg buffer with invalid layer 3. Ignoring.\n");
return -1;
}
uint8_t pdisc = gsm48_hdr_pdisc(gh);
switch (pdisc) {