Import tcpdump 3.7.1, from

 http://www.tcpdump.org/release/tcpdump-3.7.1.tar.gz

1 files changed, 858 insertions, 0 deletions

diff --git a/contrib/tcpdump/print-802_11.c b/contrib/tcpdump/print-802_11.c
new file mode 100644
index 0000000..b9c2bb8
--- /dev/null
+++ b/contrib/tcpdump/print-802_11.c
@@ -0,0 +1,858 @@
+/*
+ * 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 1.6 2001/09/17 21:57:53 fenner Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+
+#include <netinet/in.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 RATEStoBUF(p, buf) \
+do { \
+	int z = 0; \
+	for (z = 0 ; z < p.rates.length ; z++) \
+		snprintf(buf, sizeof(buf), "%s %2.1f", buf, (.5 * (p.rates.rate[z] & 0x7f))); \
+} 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_int length)
+{
+	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 0;
+		if (*(p + offset) == 0xff)
+			break;
+		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 struct mgmt_header_t *pmh,
+    const u_char *p)
+{
+	struct mgmt_body_t pbody;
+	int offset = 0;
+	char buf[128];
+
+	memset(buf, 0, sizeof(buf));
+	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;
+
+	RATEStoBUF(pbody, buf);
+
+	printf("%s (%s) [%s Mbit] %s CH: %x %s",
+	    subtype_text[FC_SUBTYPE(fc)], pbody.ssid.ssid, buf,
+	    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 struct mgmt_header_t *pmh,
+    const u_char *p)
+{
+	struct mgmt_body_t pbody;
+	int offset = 0;
+	char buf[128];
+
+	memset(buf, 0, sizeof(buf));
+	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;
+
+	RATEStoBUF(pbody,buf);
+
+	printf("%s (%s) [%s Mbit] ",
+	    subtype_text[FC_SUBTYPE(fc)], pbody.ssid.ssid,buf);
+	return 1;
+}
+
+static int handle_assoc_response(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, 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 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, 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 (%s) AP : %s",subtype_text[FC_SUBTYPE(fc)], pbody.ssid.ssid, etheraddr_string( pbody.ap ));
+
+	return 1;
+}
+
+static int handle_reassoc_response(u_int16_t fc, const struct mgmt_header_t *pmh,
+    const u_char *p)
+{
+	/* Same as a Association Reponse */
+	return handle_assoc_response(fc,pmh,p);
+}
+
+static int handle_probe_request(u_int16_t fc, const struct mgmt_header_t *pmh,
+    const u_char *p)
+{
+	struct mgmt_body_t  pbody;
+	int offset = 0;
+	char buf[128];
+
+	memset(buf, 0, sizeof(buf));
+
+	memset(&pbody, 0, sizeof(pbody));
+
+	if (!parse_elements(&pbody, p, offset))
+		return 0;
+
+	RATEStoBUF(pbody, buf);
+
+	printf("%s (%s) [%s Mbit] ", subtype_text[FC_SUBTYPE(fc)],
+	    pbody.ssid.ssid,buf);
+
+	return 1;
+}
+
+static int handle_probe_response(u_int16_t fc, const struct mgmt_header_t *pmh,
+    const u_char *p)
+{
+	struct mgmt_body_t  pbody;
+	int offset = 0;
+	char buf[128];
+
+	memset(buf, 0, sizeof(buf));
+
+	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 (%s) CH: %x %s", subtype_text[FC_SUBTYPE(fc)], pbody.ssid.ssid,pbody.ds.channel,
+	    CAPABILITY_PRIVACY(pbody.capability_info) ? ",PRIVACY " : "" );
+
+	return 1;
+}
+
+static int handle_atim(u_int16_t fc, const struct mgmt_header_t *pmh,
+    const u_char *p)
+{
+	/* the frame body for ATIM is null. */
+	printf("ATIM");
+	return 1;
+}
+
+static int handle_disassoc(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;
+
+	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 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, 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, u_int length)
+{
+	switch (FC_SUBTYPE(fc)) {
+	case ST_ASSOC_REQUEST:
+		return (handle_assoc_request(fc, pmh, p));
+	case ST_ASSOC_RESPONSE:
+		return (handle_assoc_response(fc, pmh, p));
+	case ST_REASSOC_REQUEST:
+		return (handle_reassoc_request(fc, pmh, p));
+	case ST_REASSOC_RESPONSE:
+		return (handle_reassoc_response(fc, pmh, p));
+	case ST_PROBE_REQUEST:
+		return (handle_probe_request(fc, pmh, p));
+	case ST_PROBE_RESPONSE:
+		return (handle_probe_response(fc, pmh, p));
+	case ST_BEACON:
+		return (handle_beacon(fc, pmh, p));
+	case ST_ATIM:
+		return (handle_atim(fc, pmh, p));
+	case ST_DISASSOC:
+		return (handle_disassoc(fc, pmh, 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, length));
+		}
+		else
+			return (handle_auth(fc, pmh, 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, u_int length)
+{
+	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, u_int length)
+{
+#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, u_int length)
+{
+	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, u_int length)
+{
+	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, u_int length)
+{
+	switch (FC_TYPE(fc)) {
+	case T_MGMT:
+		mgmt_header_print(p, length);
+		break;
+
+	case T_CTRL:
+		ctrl_header_print(fc, p, length);
+		break;
+
+	case T_DATA:
+		data_header_print(fc, p, length);
+		break;
+
+	default:
+		printf("(header) unknown IEEE802.11 frame type (%d)",
+		    FC_TYPE(fc));
+		break;
+	}
+}
+
+/*
+ * This is the top level routine of the printer.  'p' is the points
+ * to the ether header of the packet, 'h->tv' 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, 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);
+
+	if (eflag)
+		ieee_802_11_print(fc, p, length);
+
+	/*
+	 * 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;
+
+	HEADER_LENGTH=GetHeaderLength(fc);
+
+	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, length)) {
+			printf("[|802.11]");
+			goto out;
+		}
+		break;
+
+	case T_CTRL:
+		if (!ctrl_body_print(fc, p - HEADER_LENGTH,
+		    length + 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,length)) {
+				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,
+					    length + 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);
+}