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NetBSD/usr.sbin/wlanctl/wlanctl.c

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/* $NetBSD: wlanctl.c,v 1.13 2011/08/31 13:32:41 joerg Exp $ */
/*-
* Copyright (c) 2005 David Young. All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* 3. The name of David Young may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY David Young ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL David
* Young BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/inttypes.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_media.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <net80211/ieee80211.h>
#include <net80211/ieee80211_sysctl.h>
struct flagname {
u_int32_t fn_flag;
const char *fn_name;
};
struct cmdflags {
int cf_v; /* verbose */
int cf_a; /* all 802.11 interfaces */
int cf_p; /* public (i.e. non-private) dests */
};
static void print_flags(u_int32_t, const struct flagname *, u_int);
static int dump_nodes(const char *, int, struct cmdflags *);
static const char *ether_string(u_int8_t *);
static void parse_args(int *, char ***, struct cmdflags *);
static void print_capinfo(u_int16_t);
static void print_channel(u_int16_t, u_int16_t, u_int16_t);
static void print_node_flags(u_int32_t);
static void print_rateset(struct ieee80211_rateset *, int);
__dead static void usage(void);
static void
print_rateset(struct ieee80211_rateset *rs, int txrate)
{
int i, rate;
const char *basic;
printf("\trates");
for (i = 0; i < rs->rs_nrates; i++) {
if ((rs->rs_rates[i] & IEEE80211_RATE_BASIC) != 0)
basic = "*";
else
basic = "";
rate = 5 * (rs->rs_rates[i] & IEEE80211_RATE_VAL);
if (i == txrate)
printf(" [%s%d.%d]", basic, rate / 10, rate % 10);
else
printf(" %s%d.%d", basic, rate / 10, rate % 10);
}
printf("\n");
}
static void
print_flags(u_int32_t flags, const struct flagname *flagnames, u_int nname)
{
u_int i;
const char *delim;
delim = "<";
for (i = 0; i < nname; i++) {
if ((flags & flagnames[i].fn_flag) != 0) {
printf("%s%s", delim, flagnames[i].fn_name);
delim = ",";
}
}
printf("%s\n", (delim[0] == '<') ? "" : ">");
}
static void
print_node_flags(u_int32_t flags)
{
static const struct flagname nodeflags[] = {
{IEEE80211_NODE_SYSCTL_F_BSS, "bss"}
, {IEEE80211_NODE_SYSCTL_F_STA, "sta"}
, {IEEE80211_NODE_SYSCTL_F_SCAN, "scan"}
};
printf("\tnode flags %04x", flags);
print_flags(flags, nodeflags, __arraycount(nodeflags));
}
static void
print_capinfo(u_int16_t capinfo)
{
static const struct flagname capflags[] = {
{IEEE80211_CAPINFO_ESS, "ess"},
{IEEE80211_CAPINFO_IBSS, "ibss"},
{IEEE80211_CAPINFO_CF_POLLABLE, "cf pollable"},
{IEEE80211_CAPINFO_CF_POLLREQ, "request cf poll"},
{IEEE80211_CAPINFO_PRIVACY, "privacy"},
{IEEE80211_CAPINFO_SHORT_PREAMBLE, "short preamble"},
{IEEE80211_CAPINFO_PBCC, "pbcc"},
{IEEE80211_CAPINFO_CHNL_AGILITY, "channel agility"},
{IEEE80211_CAPINFO_SHORT_SLOTTIME, "short slot-time"},
{IEEE80211_CAPINFO_RSN, "rsn"},
{IEEE80211_CAPINFO_DSSSOFDM, "dsss-ofdm"}
};
printf("\tcapabilities %04x", capinfo);
print_flags(capinfo, capflags, __arraycount(capflags));
}
static const char *
ether_string(u_int8_t *addr)
{
struct ether_addr ea;
(void)memcpy(ea.ether_addr_octet, addr, sizeof(ea.ether_addr_octet));
return ether_ntoa(&ea);
}
static void
print_channel(u_int16_t chanidx, u_int16_t freq, u_int16_t flags)
{
static const struct flagname chanflags[] = {
{IEEE80211_CHAN_TURBO, "turbo"},
{IEEE80211_CHAN_CCK, "cck"},
{IEEE80211_CHAN_OFDM, "ofdm"},
{IEEE80211_CHAN_2GHZ, "2.4GHz"},
{IEEE80211_CHAN_5GHZ, "5GHz"},
{IEEE80211_CHAN_PASSIVE, "passive scan"},
{IEEE80211_CHAN_DYN, "dynamic cck-ofdm"},
{IEEE80211_CHAN_GFSK, "gfsk"}
};
printf("\tchan %d freq %dMHz flags %04x", chanidx, freq, flags);
print_flags(flags, chanflags, __arraycount(chanflags));
}
/*
*
* ifname: dump nodes belonging to the given interface, or belonging
* to all interfaces if NULL
* hdr_type: header type: IEEE80211_SYSCTL_T_NODE -> generic node,
* IEEE80211_SYSCTL_T_RSSADAPT -> rssadapt(9) info,
* IEEE80211_SYSCTL_T_DRVSPEC -> driver specific.
* cf: command flags, cf_v != 0 -> verbose
*/
static int
dump_nodes(const char *ifname_arg, int hdr_type, struct cmdflags *cf)
{
#if 0
/*39*/ u_int8_t ns_erp; /* 11g only */
/*40*/ u_int32_t ns_rstamp; /* recv timestamp */
/*64*/ u_int16_t ns_fhdwell; /* FH only */
/*66*/ u_int8_t ns_fhindex; /* FH only */
/*68*/
#endif
u_int i, ifindex;
size_t namelen, nodes_len, totallen;
int name[12];
int *vname;
char ifname[IFNAMSIZ];
struct ieee80211_node_sysctl *pns, *ns;
u_int64_t ts;
namelen = __arraycount(name);
if (sysctlnametomib("net.link.ieee80211.nodes", &name[0],
&namelen) != 0) {
warn("sysctlnametomib");
return -1;
}
if (ifname_arg == NULL)
ifindex = 0;
else if ((ifindex = if_nametoindex(ifname_arg)) == 0) {
warn("if_nametoindex");
return -1;
}
totallen = namelen + IEEE80211_SYSCTL_NODENAMELEN;
if (totallen >= __arraycount(name)) {
warnx("Internal error finding sysctl mib");
return -1;
}
vname = &name[namelen];
vname[IEEE80211_SYSCTL_NODENAME_IF] = ifindex;
vname[IEEE80211_SYSCTL_NODENAME_OP] = IEEE80211_SYSCTL_OP_ALL;
vname[IEEE80211_SYSCTL_NODENAME_ARG] = 0;
vname[IEEE80211_SYSCTL_NODENAME_TYPE] = hdr_type;
vname[IEEE80211_SYSCTL_NODENAME_ELTSIZE] = sizeof(*ns);
vname[IEEE80211_SYSCTL_NODENAME_ELTCOUNT] = INT_MAX;
/* how many? */
if (sysctl(name, totallen, NULL, &nodes_len, NULL, 0) != 0) {
warn("sysctl(count)");
return -1;
}
ns = malloc(nodes_len);
if (ns == NULL) {
warn("malloc");
return -1;
}
vname[IEEE80211_SYSCTL_NODENAME_ELTCOUNT] = nodes_len / sizeof(ns[0]);
/* Get them. */
if (sysctl(name, totallen, ns, &nodes_len, NULL, 0) != 0) {
warn("sysctl(get)");
return -1;
}
for (i = 0; i < nodes_len / sizeof(ns[0]); i++) {
pns = &ns[i];
if (if_indextoname(pns->ns_ifindex, ifname) == NULL) {
warn("if_indextoname");
return -1;
}
if (cf->cf_p && (pns->ns_capinfo & IEEE80211_CAPINFO_PRIVACY))
continue;
printf("%s: mac %s ", ifname, ether_string(pns->ns_macaddr));
printf("bss %s\n", ether_string(pns->ns_bssid));
print_node_flags(pns->ns_flags);
/* TBD deal with binary ESSID */
printf("\tess <%.*s>\n", pns->ns_esslen, pns->ns_essid);
print_channel(pns->ns_chanidx, pns->ns_freq, pns->ns_chanflags);
print_capinfo(pns->ns_capinfo);
assert(sizeof(ts) == sizeof(pns->ns_tstamp));
memcpy(&ts, &pns->ns_tstamp[0], sizeof(ts));
printf("\tbeacon-interval %d TU tsft %" PRIu64 " us\n",
pns->ns_intval, (u_int64_t)le64toh(ts));
print_rateset(&pns->ns_rates, pns->ns_txrate);
printf("\tassoc-id %d assoc-failed %d inactivity %ds\n",
pns->ns_associd, pns->ns_fails, pns->ns_inact);
printf("\trssi %d txseq %d rxseq %d\n",
pns->ns_rssi, pns->ns_txseq, pns->ns_rxseq);
}
return 0;
}
static void
usage(void)
{
fprintf(stderr, "usage: %s [ -p ] [ -v ] -a\n"
"\t[ -v ] interface [ interface ... ]\n", getprogname());
exit(EXIT_FAILURE);
}
static void
parse_args(int *argcp, char ***argvp, struct cmdflags *cf)
{
int ch;
(void)memset(cf, 0, sizeof(*cf));
while ((ch = getopt(*argcp, *argvp, "apv")) != -1) {
switch (ch) {
case 'a':
cf->cf_a = 1;
break;
case 'p':
cf->cf_p = 1;
break;
case 'v':
cf->cf_v = 1;
break;
default:
warnx("unknown option -%c", ch);
usage();
}
}
*argcp -= optind;
*argvp += optind;
}
#define LOGICAL_XOR(x, y) (!(x) != !(y))
int
main(int argc, char **argv)
{
int i;
struct cmdflags cf;
parse_args(&argc, &argv, &cf);
if (!LOGICAL_XOR(argc > 0, cf.cf_a))
usage();
if (cf.cf_a) {
if (dump_nodes(NULL, IEEE80211_SYSCTL_T_NODE, &cf) != 0)
return EXIT_FAILURE;
return EXIT_SUCCESS;
}
for (i = 0; i < argc; i++) {
if (dump_nodes(argv[i], IEEE80211_SYSCTL_T_NODE, &cf) != 0)
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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