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10afb02ac8
tcpdump/print-802_11.c
guy c422d3ab0f Get rid of the "-Wno-unused" flag, and fix up most of the 
unused-parameter problems reported by GCC.  Add an _U_ tag to label
parameters as unused if the function is called through a pointer (so
that you can't change its signature by removing parameters) or if there
are unused parameters only because the function isn't complete.

Add some additional bounds checks the necessity for which was revealed
while cleaning up unused-parameter problems.

Make some routines static.

"lcp_print()", defined in "print-lcp.c", isn't called anywhere -
"print-ppp.c" has the code to dissect LCP.  Get rid of "print-lcp.c".
2002-09-05 21:25:34 +00:00

847 lines
21 KiB
C
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/*
* Copyright (c) 2001
* Fortress Technologies, Inc. All rights reserved.
* Charlie Lenahan (clenahan@fortresstech.com)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static const char rcsid[] =
"@(#) $Header: /tcpdump/master/tcpdump/print-802_11.c,v 1.11 2002-09-05 21:25:36 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <tcpdump-stdinc.h>
#include <stdio.h>
#include <pcap.h>
#include <string.h>
#include "interface.h"
#include "addrtoname.h"
#include "ethertype.h"
#include "extract.h"
#include "ieee802_11.h"
#define PRINT_RATES(p) \
do { \
int z; \
const char *sep = " ["; \
for (z = 0; z < p.rates.length ; z++) { \
printf("%s%2.1f", sep, (.5 * (p.rates.rate[z] & 0x7f))); \
sep = " "; \
} \
if (p.rates.length != 0) \
printf(" Mbit]"); \
} while (0)
static const char *auth_alg_text[]={"Open System","Shared Key","EAP"};
static const char *subtype_text[]={
"Assoc Request",
"Assoc Response",
"ReAssoc Request",
"ReAssoc Response",
"Probe Request",
"Probe Response",
"RESERVED",
"RESERVED",
"Beacon",
"ATIM",
"Disassociation",
"Authentication",
"DeAuthentication",
"RESERVED",
"RESERVED"
};
static const char *status_text[] = {
"Succesful", /* 0 */
"Unspecified failure", /* 1 */
"Reserved", /* 2 */
"Reserved", /* 3 */
"Reserved", /* 4 */
"Reserved", /* 5 */
"Reserved", /* 6 */
"Reserved", /* 7 */
"Reserved", /* 8 */
"Reserved", /* 9 */
"Cannot Support all requested capabilities in the Capability Information field", /* 10 */
"Reassociation denied due to inability to confirm that association exists", /* 11 */
"Association denied due to reason outside the scope of the standard", /* 12 */
"Responding station does not support the specified authentication algorithm ", /* 13 */
"Received an Authentication frame with authentication transaction " \
"sequence number out of expected sequence", /* 14 */
"Authentication rejected because of challenge failure", /* 15 */
"Authentication rejected due to timeout waiting for next frame in sequence", /* 16 */
"Association denied because AP is unable to handle additional associated stations", /* 17 */
"Association denied due to requesting station not supporting all of the " \
"data rates in BSSBasicRateSet parameter", /* 18 */
NULL
};
static const char *reason_text[] = {
"Reserved", /* 0 */
"Unspecified reason", /* 1 */
"Previous authentication no longer valid", /* 2 */
"Deauthenticated because sending station is leaving (or has left) IBSS or ESS", /* 3 */
"Disassociated due to inactivity", /* 4 */
"Disassociated because AP is unable to handle all currently associated stations", /* 5 */
"Class 2 frame receivedfrom nonauthenticated station", /* 6 */
"Class 3 frame received from nonassociated station", /* 7 */
"Disassociated because sending station is leaving (or has left) BSS", /* 8 */
"Station requesting (re)association is not authenticated with responding station", /* 9 */
NULL
};
static int wep_print(const u_char *p)
{
u_int32_t iv;
if (!TTEST2(*p, 4))
return 0;
iv = EXTRACT_LE_32BITS(p);
printf("Data IV:%3x Pad %x KeyID %x", IV_IV(iv), IV_PAD(iv),
IV_KEYID(iv));
return 1;
}
static int parse_elements(struct mgmt_body_t *pbody,const u_char *p,int offset)
{
for (;;) {
if (!TTEST2(*(p + offset), 1))
return 1;
switch (*(p + offset)) {
case E_SSID:
if (!TTEST2(*(p+offset), 2))
return 0;
memcpy(&(pbody->ssid),p+offset,2); offset += 2;
if (pbody->ssid.length > 0)
{
if (!TTEST2(*(p+offset), pbody->ssid.length))
return 0;
memcpy(&(pbody->ssid.ssid),p+offset,pbody->ssid.length); offset += pbody->ssid.length;
pbody->ssid.ssid[pbody->ssid.length]='\0';
}
break;
case E_CHALLENGE:
if (!TTEST2(*(p+offset), 2))
return 0;
memcpy(&(pbody->challenge),p+offset,2); offset += 2;
if (pbody->challenge.length > 0)
{
if (!TTEST2(*(p+offset), pbody->challenge.length))
return 0;
memcpy(&(pbody->challenge.text),p+offset,pbody->challenge.length); offset += pbody->challenge.length;
pbody->challenge.text[pbody->challenge.length]='\0';
}
break;
case E_RATES:
if (!TTEST2(*(p+offset), 2))
return 0;
memcpy(&(pbody->rates),p+offset,2); offset += 2;
if (pbody->rates.length > 0) {
if (!TTEST2(*(p+offset), pbody->rates.length))
return 0;
memcpy(&(pbody->rates.rate),p+offset,pbody->rates.length); offset += pbody->rates.length;
}
break;
case E_DS:
if (!TTEST2(*(p+offset), 3))
return 0;
memcpy(&(pbody->ds),p+offset,3); offset +=3;
break;
case E_CF:
if (!TTEST2(*(p+offset), 8))
return 0;
memcpy(&(pbody->cf),p+offset,8); offset +=8;
break;
case E_TIM:
if (!TTEST2(*(p+offset), 2))
return 0;
memcpy(&(pbody->tim),p+offset,2); offset +=2;
if (!TTEST2(*(p+offset), 3))
return 0;
memcpy(&(pbody->tim.count),p+offset,3); offset +=3;
if ((pbody->tim.length -3) > 0)
{
if (!TTEST2(*(p+offset), pbody->tim.length -3))
return 0;
memcpy((pbody->tim.bitmap),p+(pbody->tim.length -3),(pbody->tim.length -3));
offset += pbody->tim.length -3;
}
break;
default:
#if 0
printf("(1) unhandled element_id (%d) ", *(p+offset) );
#endif
offset+= *(p+offset+1) + 2;
break;
}
}
return 1;
}
/*********************************************************************************
* Print Handle functions for the management frame types
*********************************************************************************/
static int handle_beacon(u_int16_t fc, const u_char *p)
{
struct mgmt_body_t pbody;
int offset = 0;
memset(&pbody, 0, sizeof(pbody));
if (!TTEST2(*p, 12))
return 0;
memcpy(&pbody.timestamp, p, 8);
offset += 8;
pbody.beacon_interval = EXTRACT_LE_16BITS(p+offset);
offset += 2;
pbody.capability_info = EXTRACT_LE_16BITS(p+offset);
offset += 2;
if (!parse_elements(&pbody,p,offset))
return 0;
printf("%s (", subtype_text[FC_SUBTYPE(fc)]);
fn_print(pbody.ssid.ssid, NULL);
printf(")");
PRINT_RATES(pbody);
printf(" %s CH: %u %s",
CAPABILITY_ESS(pbody.capability_info) ? "ESS" : "IBSS",
pbody.ds.channel,
CAPABILITY_PRIVACY(pbody.capability_info) ? ", PRIVACY" : "" );
return 1;
}
static int handle_assoc_request(u_int16_t fc, const u_char *p)
{
struct mgmt_body_t pbody;
int offset = 0;
memset(&pbody, 0, sizeof(pbody));
if (!TTEST2(*p, 4))
return 0;
pbody.capability_info = EXTRACT_LE_16BITS(p);
offset += 2;
pbody.listen_interval = EXTRACT_LE_16BITS(p+offset);
offset += 2;
if (!parse_elements(&pbody,p,offset))
return 0;
printf("%s (", subtype_text[FC_SUBTYPE(fc)]);
fn_print(pbody.ssid.ssid, NULL);
printf(")");
PRINT_RATES(pbody);
return 1;
}
static int handle_assoc_response(u_int16_t fc, const u_char *p)
{
struct mgmt_body_t pbody;
int offset = 0;
memset(&pbody, 0, sizeof(pbody));
if (!TTEST2(*p, 6))
return 0;
pbody.capability_info = EXTRACT_LE_16BITS(p);
offset += 2;
pbody.status_code = EXTRACT_LE_16BITS(p+offset);
offset += 2;
pbody.aid = EXTRACT_LE_16BITS(p+offset);
offset += 2;
if (!parse_elements(&pbody,p,offset))
return 0;
printf("%s AID(%x) :%s: %s", subtype_text[FC_SUBTYPE(fc)],
((u_int16_t)(pbody.aid << 2 )) >> 2 ,
CAPABILITY_PRIVACY(pbody.capability_info) ? " PRIVACY " : "",
(pbody.status_code < 19 ? status_text[pbody.status_code] : "n/a"));
return 1;
}
static int handle_reassoc_request(u_int16_t fc, const u_char *p)
{
struct mgmt_body_t pbody;
int offset = 0;
memset(&pbody, 0, sizeof(pbody));
if (!TTEST2(*p, 10))
return 0;
pbody.capability_info = EXTRACT_LE_16BITS(p);
offset += 2;
pbody.listen_interval = EXTRACT_LE_16BITS(p+offset);
offset += 2;
memcpy(&pbody.ap,p+offset,6);
offset += 6;
if (!parse_elements(&pbody,p,offset))
return 0;
printf("%s (", subtype_text[FC_SUBTYPE(fc)]);
fn_print(pbody.ssid.ssid, NULL);
printf(") AP : %s", etheraddr_string( pbody.ap ));
return 1;
}
static int handle_reassoc_response(u_int16_t fc, const u_char *p)
{
/* Same as a Association Reponse */
return handle_assoc_response(fc, p);
}
static int handle_probe_request(u_int16_t fc, const u_char *p)
{
struct mgmt_body_t pbody;
int offset = 0;
memset(&pbody, 0, sizeof(pbody));
if (!parse_elements(&pbody, p, offset))
return 0;
printf("%s (", subtype_text[FC_SUBTYPE(fc)]);
fn_print(pbody.ssid.ssid, NULL);
printf(")");
PRINT_RATES(pbody);
return 1;
}
static int handle_probe_response(u_int16_t fc, const u_char *p)
{
struct mgmt_body_t pbody;
int offset = 0;
memset(&pbody, 0, sizeof(pbody));
if (!TTEST2(*p, 12))
return 0;
memcpy(&pbody.timestamp,p,8);
offset += 8;
pbody.beacon_interval = EXTRACT_LE_16BITS(p+offset);
offset += 2;
pbody.capability_info = EXTRACT_LE_16BITS(p+offset);
offset += 2;
if (!parse_elements(&pbody, p, offset))
return 0;
printf("%s (", subtype_text[FC_SUBTYPE(fc)]);
fn_print(pbody.ssid.ssid, NULL);
printf(") ");
PRINT_RATES(pbody);
printf(" CH: %u%s", pbody.ds.channel,
CAPABILITY_PRIVACY(pbody.capability_info) ? ", PRIVACY" : "" );
return 1;
}
static int handle_atim(void)
{
/* the frame body for ATIM is null. */
printf("ATIM");
return 1;
}
static int handle_disassoc(u_int16_t fc, const u_char *p)
{
struct mgmt_body_t pbody;
int offset = 0;
memset(&pbody, 0, sizeof(pbody));
if (!TTEST2(*p, 2))
return 0;
pbody.reason_code = EXTRACT_LE_16BITS(p);
offset += 2;
printf("%s: %s", subtype_text[FC_SUBTYPE(fc)],
pbody.reason_code < 10 ? reason_text[pbody.reason_code] : "Reserved" );
return 1;
}
static int handle_auth(u_int16_t fc, const u_char *p)
{
struct mgmt_body_t pbody;
int offset = 0;
memset(&pbody, 0, sizeof(pbody));
if (!TTEST2(*p, 6))
return 0;
pbody.auth_alg = EXTRACT_LE_16BITS(p);
offset += 2;
pbody.auth_trans_seq_num = EXTRACT_LE_16BITS(p + offset);
offset += 2;
pbody.status_code = EXTRACT_LE_16BITS(p + offset);
offset += 2;
if (!parse_elements(&pbody,p,offset))
return 0;
if ((pbody.auth_alg == 1) &&
((pbody.auth_trans_seq_num == 2) || (pbody.auth_trans_seq_num == 3))) {
printf("%s (%s)-%x [Challenge Text] %s",
subtype_text[FC_SUBTYPE(fc)],
pbody.auth_alg < 4 ? auth_alg_text[pbody.auth_alg] : "Reserved" ,
pbody.auth_trans_seq_num,
((pbody.auth_trans_seq_num % 2) ?
(pbody.status_code < 19 ? status_text[pbody.status_code] : "n/a") : "" ));
} else {
printf("%s (%s)-%x: %s",
subtype_text[FC_SUBTYPE(fc)],
pbody.auth_alg < 4 ? auth_alg_text[pbody.auth_alg] : "Reserved" ,
pbody.auth_trans_seq_num,
((pbody.auth_trans_seq_num % 2) ? (pbody.status_code < 19 ? status_text[pbody.status_code] : "n/a") : ""));
}
return 1;
}
static int handle_deauth(u_int16_t fc, const struct mgmt_header_t *pmh,
const u_char *p)
{
struct mgmt_body_t pbody;
int offset = 0;
memset(&pbody, 0, sizeof(pbody));
if (!TTEST2(*p, 2))
return 0;
pbody.reason_code = EXTRACT_LE_16BITS(p);
offset += 2;
if (eflag) {
printf("%s: %s",
subtype_text[FC_SUBTYPE(fc)],
pbody.reason_code < 10 ? reason_text[pbody.reason_code] : "Reserved" );
} else {
printf("%s (%s): %s",
subtype_text[FC_SUBTYPE(fc)], etheraddr_string(pmh->sa),
pbody.reason_code < 10 ? reason_text[pbody.reason_code] : "Reserved" );
}
return 1;
}
/*********************************************************************************
* Print Body funcs
*********************************************************************************/
static int mgmt_body_print(u_int16_t fc, const struct mgmt_header_t *pmh,
const u_char *p)
{
switch (FC_SUBTYPE(fc)) {
case ST_ASSOC_REQUEST:
return (handle_assoc_request(fc, p));
case ST_ASSOC_RESPONSE:
return (handle_assoc_response(fc, p));
case ST_REASSOC_REQUEST:
return (handle_reassoc_request(fc, p));
case ST_REASSOC_RESPONSE:
return (handle_reassoc_response(fc, p));
case ST_PROBE_REQUEST:
return (handle_probe_request(fc, p));
case ST_PROBE_RESPONSE:
return (handle_probe_response(fc, p));
case ST_BEACON:
return (handle_beacon(fc, p));
case ST_ATIM:
return (handle_atim());
case ST_DISASSOC:
return (handle_disassoc(fc, p));
case ST_AUTH:
if (!TTEST2(*p, 3))
return 0;
if ((p[0] == 0 ) && (p[1] == 0) && (p[2] == 0)) {
printf("Authentication (Shared-Key)-3 ");
return (wep_print(p));
}
else
return (handle_auth(fc, p));
case ST_DEAUTH:
return (handle_deauth(fc, pmh, p));
break;
default:
printf("Unhandled Managment subtype(%x)",
FC_SUBTYPE(fc));
return 1;
}
}
/*********************************************************************************
* Handles printing all the control frame types
*********************************************************************************/
static int ctrl_body_print(u_int16_t fc, const u_char *p)
{
switch (FC_SUBTYPE(fc)) {
case CTRL_PS_POLL:
if (!TTEST2(*p, CTRL_PS_POLL_LEN))
return 0;
printf("Power Save-Poll AID(%x)",
EXTRACT_LE_16BITS(&(((const struct ctrl_ps_poll_t *)p)->aid)));
break;
case CTRL_RTS:
if (!TTEST2(*p, CTRL_RTS_LEN))
return 0;
if (eflag)
printf("Request-To-Send");
else
printf("Request-To-Send TA:%s ",
etheraddr_string(((const struct ctrl_rts_t *)p)->ta));
break;
case CTRL_CTS:
if (!TTEST2(*p, CTRL_CTS_LEN))
return 0;
if (eflag)
printf("Clear-To-Send");
else
printf("Clear-To-Send RA:%s ",
etheraddr_string(((const struct ctrl_cts_t *)p)->ra));
break;
case CTRL_ACK:
if (!TTEST2(*p, CTRL_ACK_LEN))
return 0;
if (eflag)
printf("Acknowledgment");
else
printf("Acknowledgment RA:%s ",
etheraddr_string(((const struct ctrl_ack_t *)p)->ra));
break;
case CTRL_CF_END:
if (!TTEST2(*p, CTRL_END_LEN))
return 0;
if (eflag)
printf("CF-End");
else
printf("CF-End RA:%s ",
etheraddr_string(((const struct ctrl_end_t *)p)->ra));
break;
case CTRL_END_ACK:
if (!TTEST2(*p, CTRL_END_ACK_LEN))
return 0;
if (eflag)
printf("CF-End+CF-Ack");
else
printf("CF-End+CF-Ack RA:%s ",
etheraddr_string(((const struct ctrl_end_ack_t *)p)->ra));
break;
default:
printf("(B) Unknown Ctrl Subtype");
}
return 1;
}
/*
* Print Header funcs
*/
/*
* Data Frame - Address field contents
*
* To Ds | From DS | Addr 1 | Addr 2 | Addr 3 | Addr 4
* 0 | 0 | DA | SA | BSSID | n/a
* 0 | 1 | DA | BSSID | SA | n/a
* 1 | 0 | BSSID | SA | DA | n/a
* 1 | 1 | RA | TA | DA | SA
*/
static void data_header_print(u_int16_t fc, const u_char *p)
{
#define ADDR1 (p + 4)
#define ADDR2 (p + 10)
#define ADDR3 (p + 16)
#define ADDR4 (p + 24)
if (!FC_TO_DS(fc)) {
if (!FC_FROM_DS(fc))
printf("DA:%s SA:%s BSSID:%s ",
etheraddr_string(ADDR1), etheraddr_string(ADDR2),
etheraddr_string(ADDR3));
else
printf("DA:%s BSSID:%s SA:%s ",
etheraddr_string(ADDR1), etheraddr_string(ADDR2),
etheraddr_string(ADDR3));
} else {
if (!FC_FROM_DS(fc))
printf("BSSID:%s SA:%s DA:%s ",
etheraddr_string(ADDR1), etheraddr_string(ADDR2),
etheraddr_string(ADDR3));
else
printf("RA:%s TA:%s DA:%s SA:%s ",
etheraddr_string(ADDR1), etheraddr_string(ADDR2),
etheraddr_string(ADDR3), etheraddr_string(ADDR4));
}
#undef ADDR1
#undef ADDR2
#undef ADDR3
#undef ADDR4
}
static void mgmt_header_print(const u_char *p)
{
const struct mgmt_header_t *hp = (const struct mgmt_header_t *) p;
printf("BSSID:%s DA:%s SA:%s ",
etheraddr_string((hp)->bssid), etheraddr_string((hp)->da),
etheraddr_string((hp)->sa));
}
static void ctrl_header_print(u_int16_t fc, const u_char *p)
{
switch (FC_SUBTYPE(fc)) {
case CTRL_PS_POLL:
printf("BSSID:%s TA:%s ",
etheraddr_string(((const struct ctrl_ps_poll_t *)p)->bssid),
etheraddr_string(((const struct ctrl_ps_poll_t *)p)->ta));
break;
case CTRL_RTS:
printf("RA:%s TA:%s ",
etheraddr_string(((const struct ctrl_rts_t *)p)->ra),
etheraddr_string(((const struct ctrl_rts_t *)p)->ta));
break;
case CTRL_CTS:
printf("RA:%s ",
etheraddr_string(((const struct ctrl_cts_t *)p)->ra));
break;
case CTRL_ACK:
printf("RA:%s ",
etheraddr_string(((const struct ctrl_ack_t *)p)->ra));
break;
case CTRL_CF_END:
printf("RA:%s BSSID:%s ",
etheraddr_string(((const struct ctrl_end_t *)p)->ra),
etheraddr_string(((const struct ctrl_end_t *)p)->bssid));
break;
case CTRL_END_ACK:
printf("RA:%s BSSID:%s ",
etheraddr_string(((const struct ctrl_end_ack_t *)p)->ra),
etheraddr_string(((const struct ctrl_end_ack_t *)p)->bssid));
break;
default:
printf("(H) Unknown Ctrl Subtype");
}
}
static int GetHeaderLength(u_int16_t fc)
{
int iLength=0;
switch (FC_TYPE(fc)) {
case T_MGMT:
iLength = MGMT_HEADER_LEN;
break;
case T_CTRL:
switch (FC_SUBTYPE(fc)) {
case CTRL_PS_POLL:
iLength = CTRL_PS_POLL_LEN;
break;
case CTRL_RTS:
iLength = CTRL_RTS_LEN;
break;
case CTRL_CTS:
iLength = CTRL_CTS_LEN;
break;
case CTRL_ACK:
iLength = CTRL_ACK_LEN;
break;
case CTRL_CF_END:
iLength = CTRL_END_LEN;
break;
case CTRL_END_ACK:
iLength = CTRL_END_ACK_LEN;
break;
default:
iLength = 0;
break;
}
break;
case T_DATA:
if (FC_TO_DS(fc) && FC_FROM_DS(fc))
iLength = 30;
else
iLength = 24;
break;
default:
printf("unknown IEEE802.11 frame type (%d)",
FC_TYPE(fc));
break;
}
return iLength;
}
/*
* Print the 802.11 MAC header
*/
static inline void
ieee_802_11_print(u_int16_t fc, const u_char *p)
{
switch (FC_TYPE(fc)) {
case T_MGMT:
mgmt_header_print(p);
break;
case T_CTRL:
ctrl_header_print(fc, p);
break;
case T_DATA:
data_header_print(fc, p);
break;
default:
printf("(header) unknown IEEE802.11 frame type (%d)",
FC_TYPE(fc));
break;
}
}
/*
* This is the top level routine of the printer. 'p' points
* to the 802.11 header of the packet, 'h->ts' is the timestamp,
* 'h->length' is the length of the packet off the wire, and 'h->caplen'
* is the number of bytes actually captured.
*/
void
ieee802_11_if_print(u_char *user _U_, const struct pcap_pkthdr *h, const u_char *p)
{
u_int caplen = h->caplen;
u_int length = h->len;
u_int16_t fc;
u_int HEADER_LENGTH;
u_short extracted_ethertype;
++infodelay;
ts_print(&h->ts);
if (caplen < IEEE802_11_FC_LEN) {
printf("[|802.11]");
goto out;
}
fc = EXTRACT_LE_16BITS(p);
HEADER_LENGTH = GetHeaderLength(fc);
if (caplen < HEADER_LENGTH) {
printf("[|802.11]");
goto out;
}
if (eflag)
ieee_802_11_print(fc, p);
/*
* Some printers want to get back at the ethernet addresses,
* and/or check that they're not walking off the end of the packet.
* Rather than pass them all the way down, we set these globals.
*/
packetp = p;
snapend = p + caplen;
length -= HEADER_LENGTH;
caplen -= HEADER_LENGTH;
p += HEADER_LENGTH;
switch (FC_TYPE(fc)) {
case T_MGMT:
if (!mgmt_body_print(fc, (const struct mgmt_header_t *)packetp,
p)) {
printf("[|802.11]");
goto out;
}
break;
case T_CTRL:
if (!ctrl_body_print(fc, p - HEADER_LENGTH)) {
printf("[|802.11]");
goto out;
}
break;
case T_DATA:
/* There may be a problem w/ AP not having this bit set */
if (FC_WEP(fc)) {
if (!wep_print(p)) {
printf("[|802.11]");
goto out;
}
} else {
if (llc_print(p, length, caplen, packetp + 10,
packetp + 4, &extracted_ethertype) == 0) {
/*
* Some kinds of LLC packet we cannot
* handle intelligently
*/
if (!eflag)
ieee_802_11_print(fc, p - HEADER_LENGTH);
if (extracted_ethertype) {
printf("(LLC %s) ",
etherproto_string(htons(extracted_ethertype)));
}
if (!xflag && !qflag)
default_print(p, caplen);
}
}
break;
default:
printf("(body) unhandled IEEE802.11 frame type (%d)",
FC_TYPE(fc));
break;
}
if (xflag)
default_print(p, caplen);
out:
putchar('\n');
--infodelay;
if (infoprint)
info(0);
}
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