void
capture_wlancap(const guchar *pd, int offset, int len, packet_counts *ld)
{
guint32 length;
if (!BYTES_ARE_IN_FRAME(offset, len, sizeof(guint32)*2)) {
ld->other++;
return;
}
length = pntohl(pd+sizeof(guint32));
if (!BYTES_ARE_IN_FRAME(offset, len, length)) {
ld->other++;
return;
}
offset += length;
/* 802.11 header follows */
capture_ieee80211(pd, offset, len, ld);
}
void
capture_radiotap(const guchar *pd, int offset, int len, packet_counts *ld)
{
guint16 it_len;
guint32 present;
guint8 rflags;
if(!BYTES_ARE_IN_FRAME(offset, len, RADIOTAP_MIN_HEADER_LEN)) {
ld->other ++;
return;
}
it_len = pletohs(&pd[RADIOTAP_LENGTH_OFFSET]);
if(!BYTES_ARE_IN_FRAME(offset, len, it_len)) {
ld->other ++;
return;
}
if(it_len > len) {
/* Header length is bigger than total packet length */
ld->other ++;
return;
}
if(it_len < RADIOTAP_MIN_HEADER_LEN) {
/* Header length is shorter than fixed-length portion of header */
ld->other ++;
return;
}
present = pletohl(&pd[RADIOTAP_PRESENT_OFFSET]);
offset += RADIOTAP_MIN_HEADER_LEN;
it_len -= RADIOTAP_MIN_HEADER_LEN;
rflags = 0;
/*
* IEEE80211_RADIOTAP_TSFT is the lowest-order bit.
*/
if (present & BIT(IEEE80211_RADIOTAP_TSFT)) {
if (it_len < 8) {
/* No room in header for this field. */
ld->other ++;
return;
}
/* That field is present, and it's 8 bits long. */
offset += 8;
it_len -= 8;
}
/*
* IEEE80211_RADIOTAP_FLAGS is the next bit.
*/
if (present & BIT(IEEE80211_RADIOTAP_FLAGS)) {
if (it_len < 1) {
/* No room in header for this field. */
ld->other ++;
return;
}
/* That field is present; fetch it. */
if(!BYTES_ARE_IN_FRAME(offset, len, 1)) {
ld->other ++;
return;
}
rflags = pd[offset];
}
/* 802.11 header follows */
if (rflags & IEEE80211_RADIOTAP_F_DATAPAD)
capture_ieee80211_datapad(pd, offset + it_len, len, ld);
else
capture_ieee80211(pd, offset + it_len, len, ld);
}
static void
capture_info_packet(packet_counts *counts, gint wtap_linktype, const guchar *pd, guint32 caplen, union wtap_pseudo_header *pseudo_header)
{
counts->total++;
switch (wtap_linktype) {
case WTAP_ENCAP_ETHERNET:
capture_eth(pd, 0, caplen, counts);
break;
case WTAP_ENCAP_FDDI:
case WTAP_ENCAP_FDDI_BITSWAPPED:
capture_fddi(pd, caplen, counts);
break;
case WTAP_ENCAP_IEEE_802_11_PRISM:
capture_prism(pd, 0, caplen, counts);
break;
case WTAP_ENCAP_TOKEN_RING:
capture_tr(pd, 0, caplen, counts);
break;
case WTAP_ENCAP_NULL:
capture_null(pd, caplen, counts);
break;
case WTAP_ENCAP_PPP:
capture_ppp_hdlc(pd, 0, caplen, counts);
break;
case WTAP_ENCAP_RAW_IP:
capture_raw(pd, caplen, counts);
break;
case WTAP_ENCAP_SLL:
capture_sll(pd, caplen, counts);
break;
case WTAP_ENCAP_LINUX_ATM_CLIP:
capture_clip(pd, caplen, counts);
break;
case WTAP_ENCAP_IEEE_802_11:
case WTAP_ENCAP_IEEE_802_11_WITH_RADIO:
capture_ieee80211(pd, 0, caplen, counts);
break;
case WTAP_ENCAP_IEEE_802_11_RADIOTAP:
capture_radiotap(pd, 0, caplen, counts);
break;
case WTAP_ENCAP_IEEE_802_11_AVS:
capture_wlancap(pd, 0, caplen, counts);
break;
case WTAP_ENCAP_CHDLC:
capture_chdlc(pd, 0, caplen, counts);
break;
case WTAP_ENCAP_LOCALTALK:
capture_llap(counts);
break;
case WTAP_ENCAP_ATM_PDUS:
capture_atm(pseudo_header, pd, caplen, counts);
break;
case WTAP_ENCAP_IP_OVER_FC:
capture_ipfc(pd, caplen, counts);
break;
case WTAP_ENCAP_ARCNET:
capture_arcnet(pd, caplen, counts, FALSE, TRUE);
break;
case WTAP_ENCAP_ARCNET_LINUX:
capture_arcnet(pd, caplen, counts, TRUE, FALSE);
break;
case WTAP_ENCAP_APPLE_IP_OVER_IEEE1394:
capture_ap1394(pd, 0, caplen, counts);
break;
case WTAP_ENCAP_FRELAY:
case WTAP_ENCAP_FRELAY_WITH_PHDR:
capture_fr(pd, 0, caplen, counts);
break;
case WTAP_ENCAP_ENC:
capture_enc(pd, caplen, counts);
break;
case WTAP_ENCAP_PPI:
capture_ppi(pd, caplen, counts);
break;
case WTAP_ENCAP_I2C:
capture_i2c(pseudo_header, counts);
break;
case WTAP_ENCAP_AX25_KISS:
capture_ax25_kiss(pd, 0, caplen, counts);
break;
case WTAP_ENCAP_AX25:
capture_ax25(pd, 0, caplen, counts);
break;
/* XXX - some ATM drivers on FreeBSD might prepend a 4-byte ATM
pseudo-header to DLT_ATM_RFC1483, with LLC header following;
we might have to implement that at some point. */
}
}
