1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer,
12 *    without modification.
13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
15 *    redistribution must be conditioned upon including a substantially
16 *    similar Disclaimer requirement for further binary redistribution.
17 *
18 * NO WARRANTY
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
22 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
23 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
24 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
27 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
29 * THE POSSIBILITY OF SUCH DAMAGES.
30 */
31
32/*
33 * wlandebug [-i interface] flags
34 * (default interface is wlan.0).
35 */
36#include <sys/param.h>
37#include <sys/sysctl.h>
38
39#include <net/if.h>
40
41#include <stdio.h>
42#include <stdlib.h>
43#include <ctype.h>
44#include <getopt.h>
45#include <string.h>
46#include <err.h>
47
48#include <libifconfig.h>
49
50#define	N(a)	nitems(a)
51
52const char *progname;
53
54#define	IEEE80211_MSG_11N	0x80000000	/* 11n mode debug */
55#define	IEEE80211_MSG_DEBUG	0x40000000	/* IFF_DEBUG equivalent */
56#define	IEEE80211_MSG_DUMPPKTS	0x20000000	/* IFF_LINK2 equivalent */
57#define	IEEE80211_MSG_CRYPTO	0x10000000	/* crypto work */
58#define	IEEE80211_MSG_INPUT	0x08000000	/* input handling */
59#define	IEEE80211_MSG_XRATE	0x04000000	/* rate set handling */
60#define	IEEE80211_MSG_ELEMID	0x02000000	/* element id parsing */
61#define	IEEE80211_MSG_NODE	0x01000000	/* node handling */
62#define	IEEE80211_MSG_ASSOC	0x00800000	/* association handling */
63#define	IEEE80211_MSG_AUTH	0x00400000	/* authentication handling */
64#define	IEEE80211_MSG_SCAN	0x00200000	/* scanning */
65#define	IEEE80211_MSG_OUTPUT	0x00100000	/* output handling */
66#define	IEEE80211_MSG_STATE	0x00080000	/* state machine */
67#define	IEEE80211_MSG_POWER	0x00040000	/* power save handling */
68#define	IEEE80211_MSG_HWMP	0x00020000	/* hybrid mesh protocol */
69#define	IEEE80211_MSG_DOT1XSM	0x00010000	/* 802.1x state machine */
70#define	IEEE80211_MSG_RADIUS	0x00008000	/* 802.1x radius client */
71#define	IEEE80211_MSG_RADDUMP	0x00004000	/* dump 802.1x radius packets */
72#define	IEEE80211_MSG_MESH	0x00002000	/* mesh networking */
73#define	IEEE80211_MSG_WPA	0x00001000	/* WPA/RSN protocol */
74#define	IEEE80211_MSG_ACL	0x00000800	/* ACL handling */
75#define	IEEE80211_MSG_WME	0x00000400	/* WME protocol */
76#define	IEEE80211_MSG_SUPERG	0x00000200	/* Atheros SuperG protocol */
77#define	IEEE80211_MSG_DOTH	0x00000100	/* 802.11h support */
78#define	IEEE80211_MSG_INACT	0x00000080	/* inactivity handling */
79#define	IEEE80211_MSG_ROAM	0x00000040	/* sta-mode roaming */
80#define	IEEE80211_MSG_RATECTL	0x00000020	/* tx rate control */
81#define	IEEE80211_MSG_ACTION	0x00000010	/* action frame handling */
82#define	IEEE80211_MSG_WDS	0x00000008	/* WDS handling */
83#define	IEEE80211_MSG_IOCTL	0x00000004	/* ioctl handling */
84#define	IEEE80211_MSG_TDMA	0x00000002	/* TDMA handling */
85
86static struct {
87	const char	*name;
88	u_int		bit;
89} flags[] = {
90	{ "11n",	IEEE80211_MSG_11N },
91	{ "debug",	IEEE80211_MSG_DEBUG },
92	{ "dumppkts",	IEEE80211_MSG_DUMPPKTS },
93	{ "crypto",	IEEE80211_MSG_CRYPTO },
94	{ "input",	IEEE80211_MSG_INPUT },
95	{ "xrate",	IEEE80211_MSG_XRATE },
96	{ "elemid",	IEEE80211_MSG_ELEMID },
97	{ "node",	IEEE80211_MSG_NODE },
98	{ "assoc",	IEEE80211_MSG_ASSOC },
99	{ "auth",	IEEE80211_MSG_AUTH },
100	{ "scan",	IEEE80211_MSG_SCAN },
101	{ "output",	IEEE80211_MSG_OUTPUT },
102	{ "state",	IEEE80211_MSG_STATE },
103	{ "power",	IEEE80211_MSG_POWER },
104	{ "hwmp",	IEEE80211_MSG_HWMP },
105	{ "dot1xsm",	IEEE80211_MSG_DOT1XSM },
106	{ "radius",	IEEE80211_MSG_RADIUS },
107	{ "raddump",	IEEE80211_MSG_RADDUMP },
108	{ "mesh",	IEEE80211_MSG_MESH },
109	{ "wpa",	IEEE80211_MSG_WPA },
110	{ "acl",	IEEE80211_MSG_ACL },
111	{ "wme",	IEEE80211_MSG_WME },
112	{ "superg",	IEEE80211_MSG_SUPERG },
113	{ "doth",	IEEE80211_MSG_DOTH },
114	{ "inact",	IEEE80211_MSG_INACT },
115	{ "roam",	IEEE80211_MSG_ROAM },
116	{ "rate",	IEEE80211_MSG_RATECTL },
117	{ "action",	IEEE80211_MSG_ACTION },
118	{ "wds",	IEEE80211_MSG_WDS },
119	{ "ioctl",	IEEE80211_MSG_IOCTL },
120	{ "tdma",	IEEE80211_MSG_TDMA },
121};
122
123static u_int
124getflag(const char *name, int len)
125{
126	int i;
127
128	for (i = 0; i < N(flags); i++)
129		if (strncasecmp(flags[i].name, name, len) == 0)
130			return flags[i].bit;
131	return 0;
132}
133
134static void
135usage(void)
136{
137	int i;
138
139	fprintf(stderr, "usage: %s [-d | -i device] [flags]\n", progname);
140	fprintf(stderr, "where flags are:\n");
141	for (i = 0; i < N(flags); i++)
142		printf("%s\n", flags[i].name);
143	exit(-1);
144}
145
146static void
147setoid(char oid[], size_t oidlen, const char *wlan)
148{
149#ifdef __linux__
150	if (wlan)
151		snprintf(oid, oidlen, "net.%s.debug", wlan);
152#elif __FreeBSD__
153	if (wlan)
154		snprintf(oid, oidlen, "net.wlan.%s.debug", wlan+4);
155	else
156		snprintf(oid, oidlen, "net.wlan.debug");
157#elif __NetBSD__
158	if (wlan)
159		snprintf(oid, oidlen, "net.link.ieee80211.%s.debug", wlan);
160	else
161		snprintf(oid, oidlen, "net.link.ieee80211.debug");
162#else
163#error "No support for this system"
164#endif
165}
166
167static void
168get_orig_iface_name(char *oid, size_t oid_size, char *name)
169{
170	struct ifconfig_handle *h;
171	char *orig_name;
172
173	h = ifconfig_open();
174	if (ifconfig_get_orig_name(h, name, &orig_name) < 0) {
175		/* check for original interface name. */
176		orig_name = name;
177	}
178
179	if (strlen(orig_name) < strlen("wlan") + 1 ||
180	    strncmp(orig_name, "wlan", 4) != 0)
181		errx(1, "expecting a wlan interface name");
182
183	ifconfig_close(h);
184	setoid(oid, oid_size, orig_name);
185	if (orig_name != name)
186		free(orig_name);
187}
188
189int
190main(int argc, char *argv[])
191{
192	const char *cp, *tp;
193	const char *sep;
194	int op, i;
195	u_int32_t debug, ndebug;
196	size_t debuglen;
197	char oid[256];
198
199	progname = argv[0];
200	setoid(oid, sizeof(oid), "wlan0");
201	if (argc > 1) {
202		if (strcmp(argv[1], "-d") == 0) {
203			setoid(oid, sizeof(oid), NULL);
204			argc -= 1, argv += 1;
205		} else if (strcmp(argv[1], "-i") == 0) {
206			if (argc <= 2)
207				errx(1, "missing interface name for -i option");
208			get_orig_iface_name(oid, sizeof(oid), argv[2]);
209			argc -= 2, argv += 2;
210		} else if (strcmp(argv[1], "-?") == 0)
211			usage();
212	}
213
214	debuglen = sizeof(debug);
215	if (sysctlbyname(oid, &debug, &debuglen, NULL, 0) < 0)
216		err(1, "sysctl-get(%s)", oid);
217	ndebug = debug;
218	for (; argc > 1; argc--, argv++) {
219		cp = argv[1];
220		do {
221			u_int bit;
222
223			if (*cp == '-') {
224				cp++;
225				op = -1;
226			} else if (*cp == '+') {
227				cp++;
228				op = 1;
229			} else
230				op = 0;
231			for (tp = cp; *tp != '\0' && *tp != '+' && *tp != '-';)
232				tp++;
233			bit = getflag(cp, tp-cp);
234			if (op < 0)
235				ndebug &= ~bit;
236			else if (op > 0)
237				ndebug |= bit;
238			else {
239				if (bit == 0) {
240					int c = *cp;
241					if (isdigit(c))
242						bit = strtoul(cp, NULL, 0);
243					else
244						errx(1, "unknown flag %.*s",
245							(int)(tp-cp), cp);
246				}
247				ndebug = bit;
248			}
249		} while (*(cp = tp) != '\0');
250	}
251	if (debug != ndebug) {
252		printf("%s: 0x%x => ", oid, debug);
253		if (sysctlbyname(oid, NULL, NULL, &ndebug, sizeof(ndebug)) < 0)
254			err(1, "sysctl-set(%s)", oid);
255		printf("0x%x", ndebug);
256		debug = ndebug;
257	} else
258		printf("%s: 0x%x", oid, debug);
259	sep = "<";
260	for (i = 0; i < N(flags); i++)
261		if (debug & flags[i].bit) {
262			printf("%s%s", sep, flags[i].name);
263			sep = ",";
264		}
265	printf("%s\n", *sep != '<' ? ">" : "");
266	return 0;
267}
268