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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/hostapd/print-802_11.c	Lines:	0	320	0.0 %
Date:	2017-11-13	Branches:	0	374	0.0 %


/*	$OpenBSD: print-802_11.c,v 1.9 2016/01/12 09:28:10 stsp Exp $	*/

/*
 * Copyright (c) 2005 Reyk Floeter <reyk@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/* usr.sbin/tcpdump/print-802_11.c,v 1.3 2005/03/09 11:43:17 deraadt Exp */

#include <sys/time.h>
#include <sys/socket.h>
#include <sys/file.h>
#include <sys/ioctl.h>

#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_arp.h>
#include <net/if_llc.h>
#include <net/bpf.h>

#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <arpa/inet.h>

#include <net80211/ieee80211.h>
#include <net80211/ieee80211_radiotap.h>

#include <pcap.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>

#include "hostapd.h"

const char *ieee80211_mgt_subtype_name[] = {
	"association request",
	"association response",
	"reassociation request",
	"reassociation response",
	"probe request",
	"probe response",
	"reserved#6",
	"reserved#7",
	"beacon",
	"atim",
	"disassociation",
	"authentication",
	"deauthentication",
	"reserved#13",
	"reserved#14",
	"reserved#15"
};

const u_int8_t *snapend;
int vflag = 1, eflag = 1;

int	 ieee80211_hdr(struct ieee80211_frame *);
void	 ieee80211_print_element(u_int8_t *, u_int);
void	 ieee80211_print_essid(u_int8_t *, u_int);
int	 ieee80211_elements(struct ieee80211_frame *);
int	 ieee80211_frame(struct ieee80211_frame *);
int	 ieee80211_print(struct ieee80211_frame *);
u_int	 ieee80211_any2ieee(u_int, u_int);
void	 ieee802_11_if_print(u_int8_t *, u_int);
void	 ieee802_11_radio_if_print(u_int8_t *, u_int);

#define TCARR(a)	TCHECK2(*a, sizeof(a))

int
ieee80211_hdr(struct ieee80211_frame *wh)
{
	struct ieee80211_frame_addr4 *w4;

	switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
	case IEEE80211_FC1_DIR_NODS:
		TCARR(wh->i_addr2);
		PRINTF("%s", etheraddr_string(wh->i_addr2));
		TCARR(wh->i_addr1);
		PRINTF(" > %s", etheraddr_string(wh->i_addr1));
		TCARR(wh->i_addr3);
		PRINTF(", bssid %s", etheraddr_string(wh->i_addr3));
		break;
	case IEEE80211_FC1_DIR_TODS:
		TCARR(wh->i_addr2);
		PRINTF("%s", etheraddr_string(wh->i_addr2));
		TCARR(wh->i_addr3);
		PRINTF(" > %s", etheraddr_string(wh->i_addr3));
		TCARR(wh->i_addr1);
		PRINTF(", bssid %s, > DS", etheraddr_string(wh->i_addr1));
		break;
	case IEEE80211_FC1_DIR_FROMDS:
		TCARR(wh->i_addr3);
		PRINTF("%s", etheraddr_string(wh->i_addr3));
		TCARR(wh->i_addr1);
		PRINTF(" > %s", etheraddr_string(wh->i_addr1));
		TCARR(wh->i_addr2);
		PRINTF(", bssid %s, DS >", etheraddr_string(wh->i_addr2));
		break;
	case IEEE80211_FC1_DIR_DSTODS:
		w4 = (struct ieee80211_frame_addr4 *) wh;
		TCARR(w4->i_addr4);
		PRINTF("%s", etheraddr_string(w4->i_addr4));
		TCARR(w4->i_addr3);
		PRINTF(" > %s", etheraddr_string(w4->i_addr3));
		TCARR(w4->i_addr2);
		PRINTF(", bssid %s", etheraddr_string(w4->i_addr2));
		TCARR(w4->i_addr1);
		PRINTF(" > %s, DS > DS", etheraddr_string(w4->i_addr1));
		break;
	}
	if (vflag) {
		TCARR(wh->i_seq);
		PRINTF(" (seq %u)", letoh16(*(u_int16_t *)&wh->i_seq[0]));
	}

	return (0);

 trunc:
	/* Truncated elements in frame */
	return (1);
}

/* Caller checks len */
void
ieee80211_print_element(u_int8_t *data, u_int len)
{
	u_int8_t *p;
	u_int i;

	PRINTF(" 0x");
	for (i = 0, p = data; i < len; i++, p++)
		PRINTF("%02x", *p);
}

/* Caller checks len */
void
ieee80211_print_essid(u_int8_t *essid, u_int len)
{
	u_int8_t *p;
	u_int i;

	if (len > IEEE80211_NWID_LEN)
		len = IEEE80211_NWID_LEN;

	/* determine printable or not */
	for (i = 0, p = essid; i < len; i++, p++) {
		if (*p < ' ' || *p > 0x7e)
			break;
	}
	if (i == len) {
		PRINTF(" (");
		for (i = 0, p = essid; i < len; i++, p++)
			PRINTF("%c", *p);
		PRINTF(")");
	} else
		ieee80211_print_element(essid, len);
}

int
ieee80211_elements(struct ieee80211_frame *wh)
{
	u_int8_t *frm;
	u_int8_t *tstamp, *bintval, *capinfo;
	int i;

	frm = (u_int8_t *)&wh[1];

	tstamp = frm;
	TCHECK2(*tstamp, 8);
	frm += 8;

	bintval = frm;
	TCHECK2(*bintval, 2);
	frm += 2;

	if (vflag)
		PRINTF(", interval %u", letoh16(*(u_int16_t *)bintval));

	capinfo = frm;
	TCHECK2(*capinfo, 2);
	frm += 2;

#if 0
	if (vflag)
		printb(", caps", letoh16(*(u_int16_t *)capinfo),
		    IEEE80211_CAPINFO_BITS);
#endif

	while (TTEST2(*frm, 2)) {
		u_int len = frm[1];
		u_int8_t *data = frm + 2;

		if (!TTEST2(*data, len))
			break;

#define ELEM_CHECK(l)	if (len != l) break

		switch (*frm) {
		case IEEE80211_ELEMID_SSID:
			PRINTF(", ssid");
			ieee80211_print_essid(data, len);
			break;
		case IEEE80211_ELEMID_RATES:
			if (!vflag)
				break;
			PRINTF(", rates");
			for (i = len; i > 0; i--, data++)
				PRINTF(" %uM",
				    (data[0] & IEEE80211_RATE_VAL) / 2);
			break;
		case IEEE80211_ELEMID_FHPARMS:
			ELEM_CHECK(5);
			PRINTF(", fh (dwell %u, chan %u, index %u)",
			    (data[1] << 8) | data[0],
			    (data[2] - 1) * 80 + data[3],	/* FH_CHAN */
			    data[4]);
			break;
		case IEEE80211_ELEMID_DSPARMS:
			ELEM_CHECK(1);
			if (!vflag)
				break;
			PRINTF(", ds");
			PRINTF(" (chan %u)", data[0]);
			break;
		case IEEE80211_ELEMID_CFPARMS:
			if (!vflag)
				break;
			PRINTF(", cf");
			ieee80211_print_element(data, len);
			break;
		case IEEE80211_ELEMID_TIM:
			if (!vflag)
				break;
			PRINTF(", tim");
			ieee80211_print_element(data, len);
			break;
		case IEEE80211_ELEMID_IBSSPARMS:
			if (!vflag)
				break;
			PRINTF(", ibss");
			ieee80211_print_element(data, len);
			break;
		case IEEE80211_ELEMID_COUNTRY:
			if (!vflag)
				break;
			PRINTF(", country");
			for (i = len; i > 0; i--, data++)
				PRINTF(" %u", data[0]);
			break;
		case IEEE80211_ELEMID_CHALLENGE:
			if (!vflag)
				break;
			PRINTF(", challenge");
			ieee80211_print_element(data, len);
			break;
		case IEEE80211_ELEMID_ERP:
			if (!vflag)
				break;
			PRINTF(", erp");
			ieee80211_print_element(data, len);
			break;
		case IEEE80211_ELEMID_RSN:
			if (!vflag)
				break;
			PRINTF(", rsn");
			ieee80211_print_element(data, len);
			break;
		case IEEE80211_ELEMID_XRATES:
			if (!vflag)
				break;
			PRINTF(", xrates");
			for (i = len; i > 0; i--, data++)
				PRINTF(" %uM",
				    (data[0] & IEEE80211_RATE_VAL) / 2);
			break;
		case IEEE80211_ELEMID_TPC_REQUEST:
			if (!vflag)
				break;
			PRINTF(", tpcrequest");
			ieee80211_print_element(data, len);
			break;
		case IEEE80211_ELEMID_TPC_REPORT:
			if (!vflag)
				break;
			PRINTF(", tpcreport");
			ieee80211_print_element(data, len);
			break;
		case IEEE80211_ELEMID_VENDOR:
			if (!vflag)
				break;
			PRINTF(", vendor");
			ieee80211_print_element(data, len);
			break;
		default:
			if (!vflag)
				break;
			PRINTF(", %u:%u", (u_int) *frm, len);
			ieee80211_print_element(data, len);
			break;
		}
		frm += len + 2;

		if (frm >= snapend)
			break;
	}

#undef ELEM_CHECK

	return (0);

 trunc:
	/* Truncated elements in frame */
	return (1);
}

int
ieee80211_frame(struct ieee80211_frame *wh)
{
	u_int8_t subtype, type, *frm;

	TCARR(wh->i_fc);

	type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
	subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;

	frm = (u_int8_t *)&wh[1];

	switch (type) {
	case IEEE80211_FC0_TYPE_DATA:
		PRINTF(": data");
		break;
	case IEEE80211_FC0_TYPE_MGT:
		PRINTF(": %s", ieee80211_mgt_subtype_name[
		    subtype >> IEEE80211_FC0_SUBTYPE_SHIFT]);
		switch (subtype) {
		case IEEE80211_FC0_SUBTYPE_BEACON:
		case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
			if (ieee80211_elements(wh) != 0)
				goto trunc;
			break;
		case IEEE80211_FC0_SUBTYPE_AUTH:
			TCHECK2(*frm, 2);		/* Auth Algorithm */
			switch (IEEE80211_AUTH_ALGORITHM(frm)) {
			case IEEE80211_AUTH_ALG_OPEN:
				TCHECK2(*frm, 4);	/* Auth Transaction */
				switch (IEEE80211_AUTH_TRANSACTION(frm)) {
				case IEEE80211_AUTH_OPEN_REQUEST:
					PRINTF(" request");
					break;
				case IEEE80211_AUTH_OPEN_RESPONSE:
					PRINTF(" response");
					break;
				}
				break;
			case IEEE80211_AUTH_ALG_SHARED:
				TCHECK2(*frm, 4);	/* Auth Transaction */
				switch (IEEE80211_AUTH_TRANSACTION(frm)) {
				case IEEE80211_AUTH_SHARED_REQUEST:
					PRINTF(" request");
					break;
				case IEEE80211_AUTH_SHARED_CHALLENGE:
					PRINTF(" challenge");
					break;
				case IEEE80211_AUTH_SHARED_RESPONSE:
					PRINTF(" response");
					break;
				case IEEE80211_AUTH_SHARED_PASS:
					PRINTF(" pass");
					break;
				}
				break;
			case IEEE80211_AUTH_ALG_LEAP:
				PRINTF(" (leap)");
				break;
			}
			break;
		}
		break;
	default:
		PRINTF(": type#%d", type);
		break;
	}

	if (wh->i_fc[1] & IEEE80211_FC1_WEP)
		PRINTF(", WEP");

	return (0);

 trunc:
	/* Truncated 802.11 frame */
	return (1);
}

u_int
ieee80211_any2ieee(u_int freq, u_int flags)
{
	if (flags & IEEE80211_CHAN_2GHZ) {
		if (freq == 2484)
			return 14;
		if (freq < 2484)
			return (freq - 2407) / 5;
		else
			return 15 + ((freq - 2512) / 20);
	} else if (flags & IEEE80211_CHAN_5GHZ) {
		return (freq - 5000) / 5;
	} else {
		/* Assume channel is already an IEEE number */
		return (freq);
	}
}

int
ieee80211_print(struct ieee80211_frame *wh)
{
	if (eflag)
		if (ieee80211_hdr(wh))
			return (1);

	return (ieee80211_frame(wh));
}

void
ieee802_11_if_print(u_int8_t *buf, u_int len)
{
	struct ieee80211_frame *wh = (struct ieee80211_frame*)buf;

	snapend = buf + len;

	if (ieee80211_print(wh) != 0)
		PRINTF("[|802.11]");

	PRINTF(NULL);
}

void
ieee802_11_radio_if_print(u_int8_t *buf, u_int len)
{
	struct ieee80211_radiotap_header *rh =
	    (struct ieee80211_radiotap_header*)buf;
	struct ieee80211_frame *wh;
	u_int8_t *t;
	u_int32_t present;
	u_int rh_len;

	snapend = buf + len;

	TCHECK(*rh);

	rh_len = letoh16(rh->it_len);
	if (rh->it_version != 0) {
		PRINTF("[?radiotap + 802.11 v:%u]", rh->it_version);
		goto out;
	}

	wh = (struct ieee80211_frame *)(buf + rh_len);
	if (len <= rh_len || ieee80211_print(wh))
		PRINTF("[|802.11]");

	t = (u_int8_t*)buf + sizeof(struct ieee80211_radiotap_header);

	if ((present = letoh32(rh->it_present)) == 0)
		goto out;

	PRINTF(", <radiotap v%u", rh->it_version);

#define RADIOTAP(_x)	\
	(present & (1 << IEEE80211_RADIOTAP_##_x))

	if (RADIOTAP(TSFT)) {
		u_int64_t tsf;
		u_int32_t tsf_v[2];

		TCHECK2(*t, 8);

		tsf = letoh64(*(u_int64_t *)t);
		tsf_v[0] = (u_int32_t)(tsf >> 32);
		tsf_v[1] = (u_int32_t)(tsf & 0x00000000ffffffff);
		if (vflag > 1)
			PRINTF(", tsf 0x%08x%08x", tsf_v[0], tsf_v[1]);
		t += 8;
	}

	if (RADIOTAP(FLAGS)) {
		u_int8_t flags = *(u_int8_t*)t;
		TCHECK2(*t, 1);

		if (flags & IEEE80211_RADIOTAP_F_CFP)
			PRINTF(", CFP");
		if (flags & IEEE80211_RADIOTAP_F_SHORTPRE)
			PRINTF(", SHORTPRE");
		if (flags & IEEE80211_RADIOTAP_F_WEP)
			PRINTF(", WEP");
		if (flags & IEEE80211_RADIOTAP_F_FRAG)
			PRINTF(", FRAG");
		t += 1;
	}

	if (RADIOTAP(RATE)) {
		TCHECK2(*t, 1);
		if (vflag)
			PRINTF(", %uMbit/s", (*(u_int8_t*)t) / 2);
		t += 1;
	}

	if (RADIOTAP(CHANNEL)) {
		u_int16_t freq, flags;
		TCHECK2(*t, 2);

		freq = letoh16(*(u_int16_t*)t);
		t += 2;
		TCHECK2(*t, 2);
		flags = letoh16(*(u_int16_t*)t);
		t += 2;

		PRINTF(", chan %u", ieee80211_any2ieee(freq, flags));

		if (flags & IEEE80211_CHAN_DYN &&
		    flags & IEEE80211_CHAN_2GHZ)
			PRINTF(", 11g");
		else if (flags & IEEE80211_CHAN_CCK &&
		    flags & IEEE80211_CHAN_2GHZ)
			PRINTF(", 11b");
		else if (flags & IEEE80211_CHAN_OFDM &&
		    flags & IEEE80211_CHAN_2GHZ)
			PRINTF(", 11G");
		else if (flags & IEEE80211_CHAN_OFDM &&
		    flags & IEEE80211_CHAN_5GHZ)
			PRINTF(", 11a");

		if (flags & IEEE80211_CHAN_XR)
			PRINTF(", XR");
	}

	if (RADIOTAP(FHSS)) {
		TCHECK2(*t, 2);
		PRINTF(", fhss %u/%u", *(u_int8_t*)t, *(u_int8_t*)t + 1);
		t += 2;
	}

	if (RADIOTAP(DBM_ANTSIGNAL)) {
		TCHECK(*t);
		PRINTF(", sig %ddBm", *(int8_t*)t);
		t += 1;
	}

	if (RADIOTAP(DBM_ANTNOISE)) {
		TCHECK(*t);
		PRINTF(", noise %ddBm", *(int8_t*)t);
		t += 1;
	}

	if (RADIOTAP(LOCK_QUALITY)) {
		TCHECK2(*t, 2);
		if (vflag)
			PRINTF(", quality %u", letoh16(*(u_int16_t*)t));
		t += 2;
	}

	if (RADIOTAP(TX_ATTENUATION)) {
		TCHECK2(*t, 2);
		if (vflag)
			PRINTF(", txatt %u",
			    letoh16(*(u_int16_t*)t));
		t += 2;
	}

	if (RADIOTAP(DB_TX_ATTENUATION)) {
		TCHECK2(*t, 2);
		if (vflag)
			PRINTF(", txatt %udB",
			    letoh16(*(u_int16_t*)t));
		t += 2;
	}

	if (RADIOTAP(DBM_TX_POWER)) {
		TCHECK(*t);
		PRINTF(", txpower %ddBm", *(int8_t*)t);
		t += 1;
	}

	if (RADIOTAP(ANTENNA)) {
		TCHECK(*t);
		if (vflag)
			PRINTF(", antenna %u", *(u_int8_t*)t);
		t += 1;
	}

	if (RADIOTAP(DB_ANTSIGNAL)) {
		TCHECK(*t);
		PRINTF(", signal %udB", *(u_int8_t*)t);
		t += 1;
	}

	if (RADIOTAP(DB_ANTNOISE)) {
		TCHECK(*t);
		PRINTF(", noise %udB", *(u_int8_t*)t);
		t += 1;
	}

	if (RADIOTAP(FCS)) {
		TCHECK2(*t, 4);
		if (vflag)
			PRINTF(", fcs %08x", letoh32(*(u_int32_t*)t));
		t += 4;
	}

	if (RADIOTAP(RSSI)) {
		u_int8_t rssi, max_rssi;
		TCHECK(*t);
		rssi = *(u_int8_t*)t;
		t += 1;
		TCHECK(*t);
		max_rssi = *(u_int8_t*)t;
		t += 1;

		PRINTF(", rssi %u/%u", rssi, max_rssi);
	}

#undef RADIOTAP

	PRINTF(">");
	goto out;

 trunc:
	/* Truncated frame */
	PRINTF("[|radiotap + 802.11]");

 out:
	PRINTF(NULL);
}

void
hostapd_print_ieee80211(u_int dlt, u_int verbose, u_int8_t *buf, u_int len)
{
	if (verbose)
		vflag = 1;
	else
		vflag = 0;

	if (dlt == DLT_IEEE802_11)
		ieee802_11_if_print(buf, len);
	else
		ieee802_11_radio_if_print(buf, len);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: print-802_11.c,v 1.9 2016/01/12 09:28:10 stsp Exp $ */
2
3			/*
4			* Copyright (c) 2005 Reyk Floeter <reyk@openbsd.org>
5			*
6			* Permission to use, copy, modify, and distribute this software for any
7			* purpose with or without fee is hereby granted, provided that the above
8			* copyright notice and this permission notice appear in all copies.
9			*
10			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17			*/
18
19			/* usr.sbin/tcpdump/print-802_11.c,v 1.3 2005/03/09 11:43:17 deraadt Exp */
20
21			#include <sys/time.h>
22			#include <sys/socket.h>
23			#include <sys/file.h>
24			#include <sys/ioctl.h>
25
26			#include <net/if.h>
27			#include <net/if_dl.h>
28			#include <net/if_media.h>
29			#include <net/if_arp.h>
30			#include <net/if_llc.h>
31			#include <net/bpf.h>
32
33			#include <netinet/in.h>
34			#include <netinet/if_ether.h>
35			#include <arpa/inet.h>
36
37			#include <net80211/ieee80211.h>
38			#include <net80211/ieee80211_radiotap.h>
39
40			#include <pcap.h>
41			#include <stdio.h>
42			#include <string.h>
43			#include <limits.h>
44
45			#include "hostapd.h"
46
47			const char *ieee80211_mgt_subtype_name[] = {
48			"association request",
49			"association response",
50			"reassociation request",
51			"reassociation response",
52			"probe request",
53			"probe response",
54			"reserved#6",
55			"reserved#7",
56			"beacon",
57			"atim",
58			"disassociation",
59			"authentication",
60			"deauthentication",
61			"reserved#13",
62			"reserved#14",
63			"reserved#15"
64			};
65
66			const u_int8_t *snapend;
67			int vflag = 1, eflag = 1;
68
69			int ieee80211_hdr(struct ieee80211_frame *);
70			void ieee80211_print_element(u_int8_t *, u_int);
71			void ieee80211_print_essid(u_int8_t *, u_int);
72			int ieee80211_elements(struct ieee80211_frame *);
73			int ieee80211_frame(struct ieee80211_frame *);
74			int ieee80211_print(struct ieee80211_frame *);
75			u_int ieee80211_any2ieee(u_int, u_int);
76			void ieee802_11_if_print(u_int8_t *, u_int);
77			void ieee802_11_radio_if_print(u_int8_t *, u_int);
78
79			#define TCARR(a) TCHECK2(*a, sizeof(a))
80
81			int
82			ieee80211_hdr(struct ieee80211_frame *wh)
83			{
84			struct ieee80211_frame_addr4 *w4;
85
86			switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
87			case IEEE80211_FC1_DIR_NODS:
88			TCARR(wh->i_addr2);
89			PRINTF("%s", etheraddr_string(wh->i_addr2));
90			TCARR(wh->i_addr1);
91			PRINTF(" > %s", etheraddr_string(wh->i_addr1));
92			TCARR(wh->i_addr3);
93			PRINTF(", bssid %s", etheraddr_string(wh->i_addr3));
94			break;
95			case IEEE80211_FC1_DIR_TODS:
96			TCARR(wh->i_addr2);
97			PRINTF("%s", etheraddr_string(wh->i_addr2));
98			TCARR(wh->i_addr3);
99			PRINTF(" > %s", etheraddr_string(wh->i_addr3));
100			TCARR(wh->i_addr1);
101			PRINTF(", bssid %s, > DS", etheraddr_string(wh->i_addr1));
102			break;
103			case IEEE80211_FC1_DIR_FROMDS:
104			TCARR(wh->i_addr3);
105			PRINTF("%s", etheraddr_string(wh->i_addr3));
106			TCARR(wh->i_addr1);
107			PRINTF(" > %s", etheraddr_string(wh->i_addr1));
108			TCARR(wh->i_addr2);
109			PRINTF(", bssid %s, DS >", etheraddr_string(wh->i_addr2));
110			break;
111			case IEEE80211_FC1_DIR_DSTODS:
112			w4 = (struct ieee80211_frame_addr4 *) wh;
113			TCARR(w4->i_addr4);
114			PRINTF("%s", etheraddr_string(w4->i_addr4));
115			TCARR(w4->i_addr3);
116			PRINTF(" > %s", etheraddr_string(w4->i_addr3));
117			TCARR(w4->i_addr2);
118			PRINTF(", bssid %s", etheraddr_string(w4->i_addr2));
119			TCARR(w4->i_addr1);
120			PRINTF(" > %s, DS > DS", etheraddr_string(w4->i_addr1));
121			break;
122			}
123			if (vflag) {
124			TCARR(wh->i_seq);
125			PRINTF(" (seq %u)", letoh16((u_int16_t )&wh->i_seq[0]));
126			}
127
128			return (0);
129
130			trunc:
131			/* Truncated elements in frame */
132			return (1);
133			}
134
135			/* Caller checks len */
136			void
137			ieee80211_print_element(u_int8_t *data, u_int len)
138			{
139			u_int8_t *p;
140			u_int i;
141
142			PRINTF(" 0x");
143			for (i = 0, p = data; i < len; i++, p++)
144			PRINTF("%02x", *p);
145			}
146
147			/* Caller checks len */
148			void
149			ieee80211_print_essid(u_int8_t *essid, u_int len)
150			{
151			u_int8_t *p;
152			u_int i;
153
154			if (len > IEEE80211_NWID_LEN)
155			len = IEEE80211_NWID_LEN;
156
157			/* determine printable or not */
158			for (i = 0, p = essid; i < len; i++, p++) {
159			if (p < ' ' \|\| p > 0x7e)
160			break;
161			}
162			if (i == len) {
163			PRINTF(" (");
164			for (i = 0, p = essid; i < len; i++, p++)
165			PRINTF("%c", *p);
166			PRINTF(")");
167			} else
168			ieee80211_print_element(essid, len);
169			}
170
171			int
172			ieee80211_elements(struct ieee80211_frame *wh)
173			{
174			u_int8_t *frm;
175			u_int8_t tstamp, bintval, *capinfo;
176			int i;
177
178			frm = (u_int8_t *)&wh[1];
179
180			tstamp = frm;
181			TCHECK2(*tstamp, 8);
182			frm += 8;
183
184			bintval = frm;
185			TCHECK2(*bintval, 2);
186			frm += 2;
187
188			if (vflag)
189			PRINTF(", interval %u", letoh16((u_int16_t )bintval));
190
191			capinfo = frm;
192			TCHECK2(*capinfo, 2);
193			frm += 2;
194
195			#if 0
196			if (vflag)
197			printb(", caps", letoh16((u_int16_t )capinfo),
198			IEEE80211_CAPINFO_BITS);
199			#endif
200
201			while (TTEST2(*frm, 2)) {
202			u_int len = frm[1];
203			u_int8_t *data = frm + 2;
204
205			if (!TTEST2(*data, len))
206			break;
207
208			#define ELEM_CHECK(l) if (len != l) break
209
210			switch (*frm) {
211			case IEEE80211_ELEMID_SSID:
212			PRINTF(", ssid");
213			ieee80211_print_essid(data, len);
214			break;
215			case IEEE80211_ELEMID_RATES:
216			if (!vflag)
217			break;
218			PRINTF(", rates");
219			for (i = len; i > 0; i--, data++)
220			PRINTF(" %uM",
221			(data[0] & IEEE80211_RATE_VAL) / 2);
222			break;
223			case IEEE80211_ELEMID_FHPARMS:
224			ELEM_CHECK(5);
225			PRINTF(", fh (dwell %u, chan %u, index %u)",
226			(data[1] << 8) \| data[0],
227			(data[2] - 1) * 80 + data[3], /* FH_CHAN */
228			data[4]);
229			break;
230			case IEEE80211_ELEMID_DSPARMS:
231			ELEM_CHECK(1);
232			if (!vflag)
233			break;
234			PRINTF(", ds");
235			PRINTF(" (chan %u)", data[0]);
236			break;
237			case IEEE80211_ELEMID_CFPARMS:
238			if (!vflag)
239			break;
240			PRINTF(", cf");
241			ieee80211_print_element(data, len);
242			break;
243			case IEEE80211_ELEMID_TIM:
244			if (!vflag)
245			break;
246			PRINTF(", tim");
247			ieee80211_print_element(data, len);
248			break;
249			case IEEE80211_ELEMID_IBSSPARMS:
250			if (!vflag)
251			break;
252			PRINTF(", ibss");
253			ieee80211_print_element(data, len);
254			break;
255			case IEEE80211_ELEMID_COUNTRY:
256			if (!vflag)
257			break;
258			PRINTF(", country");
259			for (i = len; i > 0; i--, data++)
260			PRINTF(" %u", data[0]);
261			break;
262			case IEEE80211_ELEMID_CHALLENGE:
263			if (!vflag)
264			break;
265			PRINTF(", challenge");
266			ieee80211_print_element(data, len);
267			break;
268			case IEEE80211_ELEMID_ERP:
269			if (!vflag)
270			break;
271			PRINTF(", erp");
272			ieee80211_print_element(data, len);
273			break;
274			case IEEE80211_ELEMID_RSN:
275			if (!vflag)
276			break;
277			PRINTF(", rsn");
278			ieee80211_print_element(data, len);
279			break;
280			case IEEE80211_ELEMID_XRATES:
281			if (!vflag)
282			break;
283			PRINTF(", xrates");
284			for (i = len; i > 0; i--, data++)
285			PRINTF(" %uM",
286			(data[0] & IEEE80211_RATE_VAL) / 2);
287			break;
288			case IEEE80211_ELEMID_TPC_REQUEST:
289			if (!vflag)
290			break;
291			PRINTF(", tpcrequest");
292			ieee80211_print_element(data, len);
293			break;
294			case IEEE80211_ELEMID_TPC_REPORT:
295			if (!vflag)
296			break;
297			PRINTF(", tpcreport");
298			ieee80211_print_element(data, len);
299			break;
300			case IEEE80211_ELEMID_VENDOR:
301			if (!vflag)
302			break;
303			PRINTF(", vendor");
304			ieee80211_print_element(data, len);
305			break;
306			default:
307			if (!vflag)
308			break;
309			PRINTF(", %u:%u", (u_int) *frm, len);
310			ieee80211_print_element(data, len);
311			break;
312			}
313			frm += len + 2;
314
315			if (frm >= snapend)
316			break;
317			}
318
319			#undef ELEM_CHECK
320
321			return (0);
322
323			trunc:
324			/* Truncated elements in frame */
325			return (1);
326			}
327
328			int
329			ieee80211_frame(struct ieee80211_frame *wh)
330			{
331			u_int8_t subtype, type, *frm;
332
333			TCARR(wh->i_fc);
334
335			type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
336			subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
337
338			frm = (u_int8_t *)&wh[1];
339
340			switch (type) {
341			case IEEE80211_FC0_TYPE_DATA:
342			PRINTF(": data");
343			break;
344			case IEEE80211_FC0_TYPE_MGT:
345			PRINTF(": %s", ieee80211_mgt_subtype_name[
346			subtype >> IEEE80211_FC0_SUBTYPE_SHIFT]);
347			switch (subtype) {
348			case IEEE80211_FC0_SUBTYPE_BEACON:
349			case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
350			if (ieee80211_elements(wh) != 0)
351			goto trunc;
352			break;
353			case IEEE80211_FC0_SUBTYPE_AUTH:
354			TCHECK2(frm, 2); / Auth Algorithm */
355			switch (IEEE80211_AUTH_ALGORITHM(frm)) {
356			case IEEE80211_AUTH_ALG_OPEN:
357			TCHECK2(frm, 4); / Auth Transaction */
358			switch (IEEE80211_AUTH_TRANSACTION(frm)) {
359			case IEEE80211_AUTH_OPEN_REQUEST:
360			PRINTF(" request");
361			break;
362			case IEEE80211_AUTH_OPEN_RESPONSE:
363			PRINTF(" response");
364			break;
365			}
366			break;
367			case IEEE80211_AUTH_ALG_SHARED:
368			TCHECK2(frm, 4); / Auth Transaction */
369			switch (IEEE80211_AUTH_TRANSACTION(frm)) {
370			case IEEE80211_AUTH_SHARED_REQUEST:
371			PRINTF(" request");
372			break;
373			case IEEE80211_AUTH_SHARED_CHALLENGE:
374			PRINTF(" challenge");
375			break;
376			case IEEE80211_AUTH_SHARED_RESPONSE:
377			PRINTF(" response");
378			break;
379			case IEEE80211_AUTH_SHARED_PASS:
380			PRINTF(" pass");
381			break;
382			}
383			break;
384			case IEEE80211_AUTH_ALG_LEAP:
385			PRINTF(" (leap)");
386			break;
387			}
388			break;
389			}
390			break;
391			default:
392			PRINTF(": type#%d", type);
393			break;
394			}
395
396			if (wh->i_fc[1] & IEEE80211_FC1_WEP)
397			PRINTF(", WEP");
398
399			return (0);
400
401			trunc:
402			/* Truncated 802.11 frame */
403			return (1);
404			}
405
406			u_int
407			ieee80211_any2ieee(u_int freq, u_int flags)
408			{
409			if (flags & IEEE80211_CHAN_2GHZ) {
410			if (freq == 2484)
411			return 14;
412			if (freq < 2484)
413			return (freq - 2407) / 5;
414			else
415			return 15 + ((freq - 2512) / 20);
416			} else if (flags & IEEE80211_CHAN_5GHZ) {
417			return (freq - 5000) / 5;
418			} else {
419			/* Assume channel is already an IEEE number */
420			return (freq);
421			}
422			}
423
424			int
425			ieee80211_print(struct ieee80211_frame *wh)
426			{
427			if (eflag)
428			if (ieee80211_hdr(wh))
429			return (1);
430
431			return (ieee80211_frame(wh));
432			}
433
434			void
435			ieee802_11_if_print(u_int8_t *buf, u_int len)
436			{
437			struct ieee80211_frame wh = (struct ieee80211_frame)buf;
438
439			snapend = buf + len;
440
441			if (ieee80211_print(wh) != 0)
442			PRINTF("[\|802.11]");
443
444			PRINTF(NULL);
445			}
446
447			void
448			ieee802_11_radio_if_print(u_int8_t *buf, u_int len)
449			{
450			struct ieee80211_radiotap_header *rh =
451			(struct ieee80211_radiotap_header*)buf;
452			struct ieee80211_frame *wh;
453			u_int8_t *t;
454			u_int32_t present;
455			u_int rh_len;
456
457			snapend = buf + len;
458
459			TCHECK(*rh);
460
461			rh_len = letoh16(rh->it_len);
462			if (rh->it_version != 0) {
463			PRINTF("[?radiotap + 802.11 v:%u]", rh->it_version);
464			goto out;
465			}
466
467			wh = (struct ieee80211_frame *)(buf + rh_len);
468			if (len <= rh_len \|\| ieee80211_print(wh))
469			PRINTF("[\|802.11]");
470
471			t = (u_int8_t*)buf + sizeof(struct ieee80211_radiotap_header);
472
473			if ((present = letoh32(rh->it_present)) == 0)
474			goto out;
475
476			PRINTF(", <radiotap v%u", rh->it_version);
477
478			#define RADIOTAP(_x) \
479			(present & (1 << IEEE80211_RADIOTAP_##_x))
480
481			if (RADIOTAP(TSFT)) {
482			u_int64_t tsf;
483			u_int32_t tsf_v[2];
484
485			TCHECK2(*t, 8);
486
487			tsf = letoh64((u_int64_t )t);
488			tsf_v[0] = (u_int32_t)(tsf >> 32);
489			tsf_v[1] = (u_int32_t)(tsf & 0x00000000ffffffff);
490			if (vflag > 1)
491			PRINTF(", tsf 0x%08x%08x", tsf_v[0], tsf_v[1]);
492			t += 8;
493			}
494
495			if (RADIOTAP(FLAGS)) {
496			u_int8_t flags = (u_int8_t)t;
497			TCHECK2(*t, 1);
498
499			if (flags & IEEE80211_RADIOTAP_F_CFP)
500			PRINTF(", CFP");
501			if (flags & IEEE80211_RADIOTAP_F_SHORTPRE)
502			PRINTF(", SHORTPRE");
503			if (flags & IEEE80211_RADIOTAP_F_WEP)
504			PRINTF(", WEP");
505			if (flags & IEEE80211_RADIOTAP_F_FRAG)
506			PRINTF(", FRAG");
507			t += 1;
508			}
509
510			if (RADIOTAP(RATE)) {
511			TCHECK2(*t, 1);
512			if (vflag)
513			PRINTF(", %uMbit/s", ((u_int8_t)t) / 2);
514			t += 1;
515			}
516
517			if (RADIOTAP(CHANNEL)) {
518			u_int16_t freq, flags;
519			TCHECK2(*t, 2);
520
521			freq = letoh16((u_int16_t)t);
522			t += 2;
523			TCHECK2(*t, 2);
524			flags = letoh16((u_int16_t)t);
525			t += 2;
526
527			PRINTF(", chan %u", ieee80211_any2ieee(freq, flags));
528
529			if (flags & IEEE80211_CHAN_DYN &&
530			flags & IEEE80211_CHAN_2GHZ)
531			PRINTF(", 11g");
532			else if (flags & IEEE80211_CHAN_CCK &&
533			flags & IEEE80211_CHAN_2GHZ)
534			PRINTF(", 11b");
535			else if (flags & IEEE80211_CHAN_OFDM &&
536			flags & IEEE80211_CHAN_2GHZ)
537			PRINTF(", 11G");
538			else if (flags & IEEE80211_CHAN_OFDM &&
539			flags & IEEE80211_CHAN_5GHZ)
540			PRINTF(", 11a");
541
542			if (flags & IEEE80211_CHAN_XR)
543			PRINTF(", XR");
544			}
545
546			if (RADIOTAP(FHSS)) {
547			TCHECK2(*t, 2);
548			PRINTF(", fhss %u/%u", (u_int8_t)t, (u_int8_t)t + 1);
549			t += 2;
550			}
551
552			if (RADIOTAP(DBM_ANTSIGNAL)) {
553			TCHECK(*t);
554			PRINTF(", sig %ddBm", (int8_t)t);
555			t += 1;
556			}
557
558			if (RADIOTAP(DBM_ANTNOISE)) {
559			TCHECK(*t);
560			PRINTF(", noise %ddBm", (int8_t)t);
561			t += 1;
562			}
563
564			if (RADIOTAP(LOCK_QUALITY)) {
565			TCHECK2(*t, 2);
566			if (vflag)
567			PRINTF(", quality %u", letoh16((u_int16_t)t));
568			t += 2;
569			}
570
571			if (RADIOTAP(TX_ATTENUATION)) {
572			TCHECK2(*t, 2);
573			if (vflag)
574			PRINTF(", txatt %u",
575			letoh16((u_int16_t)t));
576			t += 2;
577			}
578
579			if (RADIOTAP(DB_TX_ATTENUATION)) {
580			TCHECK2(*t, 2);
581			if (vflag)
582			PRINTF(", txatt %udB",
583			letoh16((u_int16_t)t));
584			t += 2;
585			}
586
587			if (RADIOTAP(DBM_TX_POWER)) {
588			TCHECK(*t);
589			PRINTF(", txpower %ddBm", (int8_t)t);
590			t += 1;
591			}
592
593			if (RADIOTAP(ANTENNA)) {
594			TCHECK(*t);
595			if (vflag)
596			PRINTF(", antenna %u", (u_int8_t)t);
597			t += 1;
598			}
599
600			if (RADIOTAP(DB_ANTSIGNAL)) {
601			TCHECK(*t);
602			PRINTF(", signal %udB", (u_int8_t)t);
603			t += 1;
604			}
605
606			if (RADIOTAP(DB_ANTNOISE)) {
607			TCHECK(*t);
608			PRINTF(", noise %udB", (u_int8_t)t);
609			t += 1;
610			}
611
612			if (RADIOTAP(FCS)) {
613			TCHECK2(*t, 4);
614			if (vflag)
615			PRINTF(", fcs %08x", letoh32((u_int32_t)t));
616			t += 4;
617			}
618
619			if (RADIOTAP(RSSI)) {
620			u_int8_t rssi, max_rssi;
621			TCHECK(*t);
622			rssi = (u_int8_t)t;
623			t += 1;
624			TCHECK(*t);
625			max_rssi = (u_int8_t)t;
626			t += 1;
627
628			PRINTF(", rssi %u/%u", rssi, max_rssi);
629			}
630
631			#undef RADIOTAP
632
633			PRINTF(">");
634			goto out;
635
636			trunc:
637			/* Truncated frame */
638			PRINTF("[\|radiotap + 802.11]");
639
640			out:
641			PRINTF(NULL);
642			}
643
644			void
645			hostapd_print_ieee80211(u_int dlt, u_int verbose, u_int8_t *buf, u_int len)
646			{
647			if (verbose)
648			vflag = 1;
649			else
650			vflag = 0;
651
652			if (dlt == DLT_IEEE802_11)
653			ieee802_11_if_print(buf, len);
654			else
655			ieee802_11_radio_if_print(buf, len);
656			}