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Diffstat (limited to 'drivers/isdn/gigaset')
-rw-r--r--drivers/isdn/gigaset/capi.c148
1 files changed, 125 insertions, 23 deletions
diff --git a/drivers/isdn/gigaset/capi.c b/drivers/isdn/gigaset/capi.c
index 47e2a913a6ef..ccec7778cad2 100644
--- a/drivers/isdn/gigaset/capi.c
+++ b/drivers/isdn/gigaset/capi.c
@@ -647,7 +647,13 @@ int gigaset_isdn_icall(struct at_state_t *at_state)
__func__);
break;
}
- capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize));
+ if (capi_cmsg2message(&iif->hcmsg,
+ __skb_put(skb, msgsize))) {
+ dev_err(cs->dev, "%s: message parser failure\n",
+ __func__);
+ dev_kfree_skb_any(skb);
+ break;
+ }
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
/* add to listeners on this B channel, update state */
@@ -693,7 +699,12 @@ static void send_disconnect_ind(struct bc_state *bcs,
dev_err(cs->dev, "%s: out of memory\n", __func__);
return;
}
- capi_cmsg2message(&iif->hcmsg, __skb_put(skb, CAPI_DISCONNECT_IND_LEN));
+ if (capi_cmsg2message(&iif->hcmsg,
+ __skb_put(skb, CAPI_DISCONNECT_IND_LEN))) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
}
@@ -723,8 +734,12 @@ static void send_disconnect_b3_ind(struct bc_state *bcs,
dev_err(cs->dev, "%s: out of memory\n", __func__);
return;
}
- capi_cmsg2message(&iif->hcmsg,
- __skb_put(skb, CAPI_DISCONNECT_B3_IND_BASELEN));
+ if (capi_cmsg2message(&iif->hcmsg,
+ __skb_put(skb, CAPI_DISCONNECT_B3_IND_BASELEN))) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
}
@@ -789,7 +804,11 @@ void gigaset_isdn_connD(struct bc_state *bcs)
dev_err(cs->dev, "%s: out of memory\n", __func__);
return;
}
- capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize));
+ if (capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize))) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
}
@@ -889,7 +908,11 @@ void gigaset_isdn_connB(struct bc_state *bcs)
dev_err(cs->dev, "%s: out of memory\n", __func__);
return;
}
- capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize));
+ if (capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize))) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
}
@@ -1096,13 +1119,19 @@ static void send_conf(struct gigaset_capi_ctr *iif,
struct sk_buff *skb,
u16 info)
{
+ struct cardstate *cs = iif->ctr.driverdata;
+
/*
* _CONF replies always only have NCCI and Info parameters
* so they'll fit into the _REQ message skb
*/
capi_cmsg_answer(&iif->acmsg);
iif->acmsg.Info = info;
- capi_cmsg2message(&iif->acmsg, skb->data);
+ if (capi_cmsg2message(&iif->acmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
__skb_trim(skb, CAPI_STDCONF_LEN);
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
@@ -1124,7 +1153,11 @@ static void do_facility_req(struct gigaset_capi_ctr *iif,
static u8 confparam[10]; /* max. 9 octets + length byte */
/* decode message */
- capi_message2cmsg(cmsg, skb->data);
+ if (capi_message2cmsg(cmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, cmsg);
/*
@@ -1223,6 +1256,7 @@ static void do_facility_req(struct gigaset_capi_ctr *iif,
}
/* send FACILITY_CONF with given Info and confirmation parameter */
+ dev_kfree_skb_any(skb);
capi_cmsg_answer(cmsg);
cmsg->Info = info;
cmsg->FacilityConfirmationParameter = confparam;
@@ -1232,7 +1266,11 @@ static void do_facility_req(struct gigaset_capi_ctr *iif,
dev_err(cs->dev, "%s: out of memory\n", __func__);
return;
}
- capi_cmsg2message(cmsg, __skb_put(cskb, msgsize));
+ if (capi_cmsg2message(cmsg, __skb_put(cskb, msgsize))) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(cskb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, cmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, cskb);
}
@@ -1246,8 +1284,14 @@ static void do_listen_req(struct gigaset_capi_ctr *iif,
struct gigaset_capi_appl *ap,
struct sk_buff *skb)
{
+ struct cardstate *cs = iif->ctr.driverdata;
+
/* decode message */
- capi_message2cmsg(&iif->acmsg, skb->data);
+ if (capi_message2cmsg(&iif->acmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
/* store listening parameters */
@@ -1264,8 +1308,14 @@ static void do_alert_req(struct gigaset_capi_ctr *iif,
struct gigaset_capi_appl *ap,
struct sk_buff *skb)
{
+ struct cardstate *cs = iif->ctr.driverdata;
+
/* decode message */
- capi_message2cmsg(&iif->acmsg, skb->data);
+ if (capi_message2cmsg(&iif->acmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
send_conf(iif, ap, skb, CapiAlertAlreadySent);
}
@@ -1290,7 +1340,11 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
u16 info;
/* decode message */
- capi_message2cmsg(cmsg, skb->data);
+ if (capi_message2cmsg(cmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, cmsg);
/* get free B channel & construct PLCI */
@@ -1577,7 +1631,11 @@ static void do_connect_resp(struct gigaset_capi_ctr *iif,
int channel;
/* decode message */
- capi_message2cmsg(cmsg, skb->data);
+ if (capi_message2cmsg(cmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, cmsg);
dev_kfree_skb_any(skb);
@@ -1743,7 +1801,11 @@ static void do_connect_b3_req(struct gigaset_capi_ctr *iif,
int channel;
/* decode message */
- capi_message2cmsg(cmsg, skb->data);
+ if (capi_message2cmsg(cmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, cmsg);
/* extract and check channel number from PLCI */
@@ -1788,7 +1850,11 @@ static void do_connect_b3_resp(struct gigaset_capi_ctr *iif,
u8 command;
/* decode message */
- capi_message2cmsg(cmsg, skb->data);
+ if (capi_message2cmsg(cmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, cmsg);
/* extract and check channel number and NCCI */
@@ -1828,7 +1894,11 @@ static void do_connect_b3_resp(struct gigaset_capi_ctr *iif,
capi_cmsg_header(cmsg, ap->id, command, CAPI_IND,
ap->nextMessageNumber++, cmsg->adr.adrNCCI);
__skb_trim(skb, msgsize);
- capi_cmsg2message(cmsg, skb->data);
+ if (capi_cmsg2message(cmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, cmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
}
@@ -1850,7 +1920,11 @@ static void do_disconnect_req(struct gigaset_capi_ctr *iif,
int channel;
/* decode message */
- capi_message2cmsg(cmsg, skb->data);
+ if (capi_message2cmsg(cmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, cmsg);
/* extract and check channel number from PLCI */
@@ -1906,8 +1980,14 @@ static void do_disconnect_req(struct gigaset_capi_ctr *iif,
kfree(b3cmsg);
return;
}
- capi_cmsg2message(b3cmsg,
- __skb_put(b3skb, CAPI_DISCONNECT_B3_IND_BASELEN));
+ if (capi_cmsg2message(b3cmsg,
+ __skb_put(b3skb, CAPI_DISCONNECT_B3_IND_BASELEN))) {
+ dev_err(cs->dev, "%s: message parser failure\n",
+ __func__);
+ kfree(b3cmsg);
+ dev_kfree_skb_any(b3skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, b3cmsg);
kfree(b3cmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, b3skb);
@@ -1938,7 +2018,11 @@ static void do_disconnect_b3_req(struct gigaset_capi_ctr *iif,
int channel;
/* decode message */
- capi_message2cmsg(cmsg, skb->data);
+ if (capi_message2cmsg(cmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, cmsg);
/* extract and check channel number and NCCI */
@@ -2055,8 +2139,14 @@ static void do_reset_b3_req(struct gigaset_capi_ctr *iif,
struct gigaset_capi_appl *ap,
struct sk_buff *skb)
{
+ struct cardstate *cs = iif->ctr.driverdata;
+
/* decode message */
- capi_message2cmsg(&iif->acmsg, skb->data);
+ if (capi_message2cmsg(&iif->acmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
send_conf(iif, ap, skb,
CapiResetProcedureNotSupportedByCurrentProtocol);
@@ -2069,8 +2159,14 @@ static void do_unsupported(struct gigaset_capi_ctr *iif,
struct gigaset_capi_appl *ap,
struct sk_buff *skb)
{
+ struct cardstate *cs = iif->ctr.driverdata;
+
/* decode message */
- capi_message2cmsg(&iif->acmsg, skb->data);
+ if (capi_message2cmsg(&iif->acmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
send_conf(iif, ap, skb, CapiMessageNotSupportedInCurrentState);
}
@@ -2082,8 +2178,14 @@ static void do_nothing(struct gigaset_capi_ctr *iif,
struct gigaset_capi_appl *ap,
struct sk_buff *skb)
{
+ struct cardstate *cs = iif->ctr.driverdata;
+
/* decode message */
- capi_message2cmsg(&iif->acmsg, skb->data);
+ if (capi_message2cmsg(&iif->acmsg, skb->data)) {
+ dev_err(cs->dev, "%s: message parser failure\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
dev_kfree_skb_any(skb);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 07:37:35 +0100