void
lwapp_data_print(netdissect_options *ndo,
const u_char *pptr, u_int len) {
const struct lwapp_transport_header *lwapp_trans_header;
const u_char *tptr;
int tlen;
tptr=pptr;
/* check if enough bytes for AP identity */
if (!ND_TTEST2(*tptr, 6))
goto trunc;
lwapp_trans_header = (const struct lwapp_transport_header *)pptr;
ND_TCHECK(*lwapp_trans_header);
/*
* Sanity checking of the header.
*/
if (LWAPP_EXTRACT_VERSION(lwapp_trans_header->version) != LWAPP_VERSION) {
ND_PRINT((ndo, "LWAPP version %u packet not supported",
LWAPP_EXTRACT_VERSION(lwapp_trans_header->version)));
return;
}
/* non-verbose */
if (ndo->ndo_vflag < 1) {
ND_PRINT((ndo, "LWAPPv%u, %s frame, Flags [%s], length %u",
LWAPP_EXTRACT_VERSION(lwapp_trans_header->version),
LWAPP_EXTRACT_CONTROL_BIT(lwapp_trans_header->version) ? "Control" : "Data",
bittok2str(lwapp_header_bits_values,"none",(lwapp_trans_header->version)&0x07),
len));
return;
}
/* ok they seem to want to know everything - lets fully decode it */
tlen=EXTRACT_16BITS(lwapp_trans_header->length);
ND_PRINT((ndo, "LWAPPv%u, %s frame, Radio-id %u, Flags [%s], Frag-id %u, length %u",
LWAPP_EXTRACT_VERSION(lwapp_trans_header->version),
LWAPP_EXTRACT_CONTROL_BIT(lwapp_trans_header->version) ? "Control" : "Data",
LWAPP_EXTRACT_RID(lwapp_trans_header->version),
bittok2str(lwapp_header_bits_values,"none",(lwapp_trans_header->version)&0x07),
lwapp_trans_header->frag_id,
tlen));
tptr+=sizeof(const struct lwapp_transport_header);
tlen-=sizeof(const struct lwapp_transport_header);
/* FIX - An IEEE 802.11 frame follows - hexdump for now */
print_unknown_data(ndo, tptr, "\n\t", tlen);
return;
trunc:
ND_PRINT((ndo, "\n\t\t packet exceeded snapshot"));
}
void
lwapp_control_print(netdissect_options *ndo,
const u_char *pptr, u_int len, int has_ap_ident)
{
const struct lwapp_transport_header *lwapp_trans_header;
const struct lwapp_control_header *lwapp_control_header;
const u_char *tptr;
int tlen;
int msg_tlen;
tptr=pptr;
if (has_ap_ident) {
/* check if enough bytes for AP identity */
ND_TCHECK2(*tptr, 6);
lwapp_trans_header = (const struct lwapp_transport_header *)(pptr+6);
} else {
lwapp_trans_header = (const struct lwapp_transport_header *)pptr;
}
ND_TCHECK(*lwapp_trans_header);
/*
* Sanity checking of the header.
*/
if (LWAPP_EXTRACT_VERSION(lwapp_trans_header->version) != LWAPP_VERSION) {
ND_PRINT((ndo, "LWAPP version %u packet not supported",
LWAPP_EXTRACT_VERSION(lwapp_trans_header->version)));
return;
}
/* non-verbose */
if (ndo->ndo_vflag < 1) {
ND_PRINT((ndo, "LWAPPv%u, %s frame, Flags [%s], length %u",
LWAPP_EXTRACT_VERSION(lwapp_trans_header->version),
LWAPP_EXTRACT_CONTROL_BIT(lwapp_trans_header->version) ? "Control" : "Data",
bittok2str(lwapp_header_bits_values,"none",(lwapp_trans_header->version)&0x07),
len));
return;
}
/* ok they seem to want to know everything - lets fully decode it */
tlen=EXTRACT_16BITS(lwapp_trans_header->length);
ND_PRINT((ndo, "LWAPPv%u, %s frame, Radio-id %u, Flags [%s], Frag-id %u, length %u",
LWAPP_EXTRACT_VERSION(lwapp_trans_header->version),
LWAPP_EXTRACT_CONTROL_BIT(lwapp_trans_header->version) ? "Control" : "Data",
LWAPP_EXTRACT_RID(lwapp_trans_header->version),
bittok2str(lwapp_header_bits_values,"none",(lwapp_trans_header->version)&0x07),
lwapp_trans_header->frag_id,
tlen));
if (has_ap_ident) {
ND_PRINT((ndo, "\n\tAP identity: %s", etheraddr_string(ndo, tptr)));
tptr+=sizeof(const struct lwapp_transport_header)+6;
} else {
tptr+=sizeof(const struct lwapp_transport_header);
}
while(tlen>0) {
/* did we capture enough for fully decoding the object header ? */
ND_TCHECK2(*tptr, sizeof(struct lwapp_control_header));
lwapp_control_header = (const struct lwapp_control_header *)tptr;
msg_tlen = EXTRACT_16BITS(lwapp_control_header->len);
/* print message header */
ND_PRINT((ndo, "\n\t Msg type: %s (%u), Seqnum: %u, Msg len: %d, Session: 0x%08x",
tok2str(lwapp_msg_type_values,"Unknown",lwapp_control_header->msg_type),
lwapp_control_header->msg_type,
lwapp_control_header->seq_num,
msg_tlen,
EXTRACT_32BITS(lwapp_control_header->session_id)));
/* did we capture enough for fully decoding the message */
ND_TCHECK2(*tptr, msg_tlen);
/* XXX - Decode sub messages for each message */
switch(lwapp_control_header->msg_type) {
case LWAPP_MSGTYPE_DISCOVERY_REQUEST:
case LWAPP_MSGTYPE_DISCOVERY_RESPONSE:
case LWAPP_MSGTYPE_JOIN_REQUEST:
case LWAPP_MSGTYPE_JOIN_RESPONSE:
case LWAPP_MSGTYPE_JOIN_ACK:
case LWAPP_MSGTYPE_JOIN_CONFIRM:
case LWAPP_MSGTYPE_CONFIGURE_REQUEST:
case LWAPP_MSGTYPE_CONFIGURE_RESPONSE:
case LWAPP_MSGTYPE_CONF_UPDATE_REQUEST:
case LWAPP_MSGTYPE_CONF_UPDATE_RESPONSE:
case LWAPP_MSGTYPE_WTP_EVENT_REQUEST:
case LWAPP_MSGTYPE_WTP_EVENT_RESPONSE:
case LWAPP_MSGTYPE_CHANGE_STATE_EVENT_REQUEST:
case LWAPP_MSGTYPE_CHANGE_STATE_EVENT_RESPONSE:
case LWAPP_MSGTYPE_ECHO_REQUEST:
case LWAPP_MSGTYPE_ECHO_RESPONSE:
case LWAPP_MSGTYPE_IMAGE_DATA_REQUEST:
case LWAPP_MSGTYPE_IMAGE_DATA_RESPONSE:
case LWAPP_MSGTYPE_RESET_REQUEST:
case LWAPP_MSGTYPE_RESET_RESPONSE:
case LWAPP_MSGTYPE_KEY_UPDATE_REQUEST:
case LWAPP_MSGTYPE_KEY_UPDATE_RESPONSE:
case LWAPP_MSGTYPE_PRIMARY_DISCOVERY_REQUEST:
case LWAPP_MSGTYPE_PRIMARY_DISCOVERY_RESPONSE:
case LWAPP_MSGTYPE_DATA_TRANSFER_REQUEST:
case LWAPP_MSGTYPE_DATA_TRANSFER_RESPONSE:
case LWAPP_MSGTYPE_CLEAR_CONFIG_INDICATION:
case LWAPP_MSGTYPE_WLAN_CONFIG_REQUEST:
case LWAPP_MSGTYPE_WLAN_CONFIG_RESPONSE:
case LWAPP_MSGTYPE_MOBILE_CONFIG_REQUEST:
case LWAPP_MSGTYPE_MOBILE_CONFIG_RESPONSE:
default:
break;
}
tptr += sizeof(struct lwapp_control_header) + msg_tlen;
tlen -= sizeof(struct lwapp_control_header) + msg_tlen;
}
return;
trunc:
ND_PRINT((ndo, "\n\t\t packet exceeded snapshot"));
}
void
lwapp_data_print(netdissect_options *ndo,
const u_char *pptr, u_int len)
{
const struct lwapp_transport_header *lwapp_trans_header;
const u_char *tptr;
u_int tlen;
u_int version;
tptr=pptr;
/* check if enough bytes for AP identity */
ND_TCHECK_6(tptr);
lwapp_trans_header = (const struct lwapp_transport_header *)pptr;
ND_TCHECK_SIZE(lwapp_trans_header);
version = EXTRACT_U_1(lwapp_trans_header->version);
/*
* Sanity checking of the header.
*/
if (LWAPP_EXTRACT_VERSION(version) != LWAPP_VERSION) {
ND_PRINT("LWAPP version %u packet not supported",
LWAPP_EXTRACT_VERSION(version));
return;
}
/* non-verbose */
if (ndo->ndo_vflag < 1) {
ND_PRINT("LWAPPv%u, %s frame, Flags [%s], length %u",
LWAPP_EXTRACT_VERSION(version),
LWAPP_EXTRACT_CONTROL_BIT(version) ? "Control" : "Data",
bittok2str(lwapp_header_bits_values,"none",version&0x07),
len);
return;
}
/* ok they seem to want to know everything - lets fully decode it */
tlen=EXTRACT_BE_U_2(lwapp_trans_header->length);
if (tlen < sizeof(struct lwapp_transport_header)) {
ND_PRINT("LWAPPv%u, %s frame, Radio-id %u, Flags [%s], length %u < transport header length",
LWAPP_EXTRACT_VERSION(version),
LWAPP_EXTRACT_CONTROL_BIT(version) ? "Control" : "Data",
LWAPP_EXTRACT_RID(version),
bittok2str(lwapp_header_bits_values,"none",version&0x07),
tlen);
return;
}
ND_PRINT("LWAPPv%u, %s frame, Radio-id %u, Flags [%s], Frag-id %u, length %u",
LWAPP_EXTRACT_VERSION(version),
LWAPP_EXTRACT_CONTROL_BIT(version) ? "Control" : "Data",
LWAPP_EXTRACT_RID(version),
bittok2str(lwapp_header_bits_values,"none",version&0x07),
EXTRACT_U_1(lwapp_trans_header->frag_id),
tlen);
tptr+=sizeof(struct lwapp_transport_header);
tlen-=sizeof(struct lwapp_transport_header);
/* FIX - An IEEE 802.11 frame follows - hexdump for now */
print_unknown_data(ndo, tptr, "\n\t", tlen);
return;
trunc:
ND_PRINT("%s", data_tstr);
}
