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madwifi/tools/wlanconfig.c
proski c62003532a Remove all reverse engineering support, it's pointless now 
git-svn-id: http://madwifi-project.org/svn/madwifi/trunk@4008 0192ed92-7a03-0410-a25b-9323aeb14dbd
2009-04-22 22:05:57 +00:00

1035 lines
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/*-
* Copyright (c) 2005 Sam Leffler, Errno Consulting
* 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,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*
* $Id$
*/
/*
* wlanconfig athX create wlandev wifiX
* wlanmode station | adhoc | ibss | ap | monitor [bssid | -bssid]
* wlanconfig athX destroy
*/
#include <sys/types.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <ctype.h>
#include <getopt.h>
#include <err.h>
#include <include/compat.h>
#include "wireless_copy.h"
#include "net80211/ieee80211.h"
#include "net80211/ieee80211_crypto.h"
#include "net80211/ieee80211_ioctl.h"
/*
* These are taken from ieee80211_node.h
*/
#define IEEE80211_NODE_TURBOP 0x0001 /* Turbo prime enable */
#define IEEE80211_NODE_COMP 0x0002 /* Compresssion enable */
#define IEEE80211_NODE_FF 0x0004 /* Fast Frame capable */
#define IEEE80211_NODE_XR 0x0008 /* Atheros WME enable */
#define IEEE80211_NODE_AR 0x0010 /* AR capable */
#define IEEE80211_NODE_BOOST 0x0080
#define streq(a,b) (strncasecmp(a, b, sizeof(b) - 1) == 0)
#undef ARRAY_SIZE
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
static int if_split_name(const char *, char **, unsigned int *);
static void vap_create(struct ifreq *);
static void vap_destroy(const char *);
static void list_stations(const char *);
static void list_scan(const char *);
static void list_channels(const char *, int);
static void list_keys(const char *);
static void list_capabilities(const char *);
static void list_wme(const char *);
static void ieee80211_status(const char *);
static void usage(void);
static int getopmode(const char *);
static int getflag(const char *);
static int get80211param(const char *, int, void *, size_t);
static int get80211priv(const char *, int, void *, size_t);
static const char *getstamode(u_int8_t);
size_t strlcat(char *, const char *, size_t);
static int verbose = 0;
int
main(int argc, char *argv[])
{
const char *ifname, *cmd;
unsigned char bnounit = 0;
char *if_base = NULL;
unsigned int unit_res = -1;
int res = 0;
if (argc < 2 ||
strncmp(argv[1], "-h", 2) == 0 || strncmp(argv[1], "--h", 3) == 0)
usage();
ifname = argv[1];
if (argc == 2) {
ieee80211_status(ifname);
return 0;
}
cmd = argv[2];
if (streq(cmd, "create")) {
struct ieee80211_clone_params cp;
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
memset(&cp, 0, sizeof(cp));
strncpy(cp.icp_name, ifname, IFNAMSIZ);
/* NB: station mode is the default */
cp.icp_opmode = IEEE80211_M_STA;
/* NB: default is to request a unique bssid/mac */
cp.icp_flags = IEEE80211_CLONE_BSSID;
while (argc > 3) {
if (strcmp(argv[3], "wlanmode") == 0) {
if (argc < 5)
usage();
cp.icp_opmode = (u_int16_t) getopmode(argv[4]);
argc--;
argv++;
} else if (strcmp(argv[3], "wlandev") == 0) {
if (argc < 5)
usage();
strncpy(ifr.ifr_name, argv[4], IFNAMSIZ);
argc--;
argv++;
} else if (strcmp(argv[3], "nounit") == 0) {
bnounit = 1;
} else {
int flag = getflag(argv[3]);
if (flag < 0)
cp.icp_flags &= ~(-flag);
else
cp.icp_flags |= flag;
}
argc--;
argv++;
}
if (ifr.ifr_name[0] == '\0')
errx(1, "no device specified with wlandev");
res = if_split_name(cp.icp_name, &if_base, &unit_res);
if (res < 0) {
err(1, "if_split_name() - malloc");
} else if ((res == 0) && (bnounit == 0)) {
/* user gave a string only and using a unit */
snprintf(cp.icp_name + strlen(if_base),
IFNAMSIZ - strlen(if_base), "%%d");
}
free(if_base);
if_base = NULL;
ifr.ifr_data = (void *)&cp;
vap_create(&ifr);
printf("%s\n", ifr.ifr_name);
} else if (streq(cmd, "destroy")) {
vap_destroy(ifname);
} else if (streq(cmd, "list")) {
if (argc > 3) {
const char *arg = argv[3];
if (streq(arg, "sta"))
list_stations(ifname);
else if (streq(arg, "scan") || streq(arg, "ap"))
list_scan(ifname);
else if (streq(arg, "chan") || streq(arg, "freq"))
list_channels(ifname, 1);
else if (streq(arg, "active"))
list_channels(ifname, 0);
else if (streq(arg, "keys"))
list_keys(ifname);
else if (streq(arg, "caps"))
list_capabilities(ifname);
else if (streq(arg, "wme"))
list_wme(ifname);
else
err(1, "unknown 'list' option: %s", arg);
} else /* NB: for compatibility */
list_stations(ifname);
} else
usage();
return 0;
}
// if_split_name - takes a name and splits it into the longest non-numeric only string
// including the first character plus the value of the longest numeric
// string including the last character
// returns : < 0 on error
// 0 on finding only a string
// 1 on finding a numeric/unit at the end of the string
//
// NOTE Allocates memory.
static int if_split_name(const char *if_name, char **if_base_name, unsigned int *unit) {
int status = -1;
const char *p = NULL;
const char *l = NULL;
/*
* Look for the unit from end to start
*/
l = if_name + strlen(if_name) - 1;
for (p = l; p >= if_name; --p) {
if (!isdigit(*p))
break;
}
if (p < l) {
if (unit != NULL)
*unit = atoi(p + 1);
status = 1;
} else
status = 0;
/*
* Wherever the unit began, one index before it is the ending of the string
*/
if (if_base_name != NULL) {
*if_base_name = malloc(p - if_name + 2);
if (*if_base_name != NULL) {
memset(*if_base_name, 0, p - if_name + 2);
strncpy(*if_base_name, if_name, p - if_name + 1);
} else
status = -1;
}
return status;
}
static void
vap_create(struct ifreq *ifr)
{
int s;
s = socket(AF_INET, SOCK_DGRAM, 0);
if (s < 0)
err(1, "socket(SOCK_DGRAM)");
if (ioctl(s, SIOC80211IFCREATE, ifr) < 0)
err(1, "ioctl");
close(s);
}
static void
vap_destroy(const char *ifname)
{
struct ifreq ifr;
int s;
s = socket(AF_INET, SOCK_DGRAM, 0);
if (s < 0)
err(1, "socket(SOCK_DGRAM)");
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
if (ioctl(s, SIOC80211IFDESTROY, &ifr) < 0)
err(1, "ioctl");
close(s);
}
static void
usage(void)
{
fprintf(stderr, "usage: wlanconfig athX create [nounit] wlandev wifiY\n");
fprintf(stderr, " wlanmode [sta|adhoc|ap|monitor|wds|ahdemo] [uniquebssid]\n");
fprintf(stderr, "usage: wlanconfig athX destroy\n");
fprintf(stderr, "usage: wlanconfig athX list [active|ap|caps|chan|freq|keys|scan|sta|wme]\n");
exit(-1);
}
static int
getopmode(const char *s)
{
if (streq(s, "sta") || streq(s, "managed"))
return IEEE80211_M_STA;
if (streq(s, "ibss") || streq(s, "adhoc") || streq(s, "ad-hoc"))
return IEEE80211_M_IBSS;
if (streq(s, "mon"))
return IEEE80211_M_MONITOR;
if (streq(s, "ap") || streq(s, "hostap") || streq(s, "master"))
return IEEE80211_M_HOSTAP;
if (streq(s, "wds"))
return IEEE80211_M_WDS;
if (streq(s, "ahdemo"))
return IEEE80211_M_AHDEMO;
errx(1, "unknown operating mode %s", s);
/*NOTREACHED*/
return -1;
}
static int
getflag(const char *s)
{
const char *cp;
int flag = 0;
cp = (s[0] == '-' ? s + 1 : s);
if (strcmp(cp, "bssid") == 0) {
printf("WARNING: the -bssid and bssid flags are deprecated.\n");
flag = IEEE80211_CLONE_BSSID;
}
if (strcmp(cp, "uniquebssid") == 0)
flag = IEEE80211_CLONE_BSSID;
if (strcmp(cp, "nosbeacon") == 0) {
printf("WARNING: the nosbeacon flag has been deprecated.\n");
return 0; /* deprecated but skip */
}
if (flag == 0)
errx(1, "unknown create option %s", s);
return (s[0] == '-' ? -flag : flag);
}
/*
* Convert MHz frequency to IEEE channel number.
*/
static u_int
ieee80211_mhz2ieee(u_int freq)
{
if (freq == 2484)
return 14;
if (freq < 2484)
return (freq - 2407) / 5;
if (freq < 5000)
return 15 + ((freq - 2512) / 20);
return (freq - 5000) / 5;
}
/*
* Convert RSSI to dBm.
*/
static u_int
rssi2dbm(u_int rssi)
{
return rssi - 95;
}
static int
getmaxrate(uint8_t rates[15], uint8_t nrates)
{
int i, maxrate = -1;
for (i = 0; i < nrates; i++) {
int rate = rates[i] & IEEE80211_RATE_VAL;
if (rate > maxrate)
maxrate = rate;
}
return maxrate / 2;
}
static const char *
getcaps(int capinfo)
{
static char capstring[32];
char *cp = capstring;
if (capinfo & IEEE80211_CAPINFO_ESS)
*cp++ = 'E';
if (capinfo & IEEE80211_CAPINFO_IBSS)
*cp++ = 'I';
if (capinfo & IEEE80211_CAPINFO_CF_POLLABLE)
*cp++ = 'c';
if (capinfo & IEEE80211_CAPINFO_CF_POLLREQ)
*cp++ = 'C';
if (capinfo & IEEE80211_CAPINFO_PRIVACY)
*cp++ = 'P';
if (capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE)
*cp++ = 'S';
if (capinfo & IEEE80211_CAPINFO_PBCC)
*cp++ = 'B';
if (capinfo & IEEE80211_CAPINFO_CHNL_AGILITY)
*cp++ = 'A';
if (capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)
*cp++ = 's';
if (capinfo & IEEE80211_CAPINFO_RSN)
*cp++ = 'R';
if (capinfo & IEEE80211_CAPINFO_DSSSOFDM)
*cp++ = 'D';
*cp = '\0';
return capstring;
}
static const char *
getathcaps(int capinfo)
{
static char capstring[32];
char *cp = capstring;
if (capinfo & IEEE80211_NODE_TURBOP)
*cp++ = 'D';
if (capinfo & IEEE80211_NODE_COMP)
*cp++ = 'C';
if (capinfo & IEEE80211_NODE_FF)
*cp++ = 'F';
if (capinfo & IEEE80211_NODE_XR)
*cp++ = 'X';
if (capinfo & IEEE80211_NODE_AR)
*cp++ = 'A';
if (capinfo & IEEE80211_NODE_BOOST)
*cp++ = 'T';
*cp = '\0';
return capstring;
}
static const char *
getstamode(u_int8_t opmode)
{
if (opmode == IEEE80211_STA_OPMODE_XR)
return "XR";
return "Normal";
}
static void
printie(const char *tag, const uint8_t *ie, size_t ielen, int maxlen)
{
printf("%s", tag);
if (verbose) {
maxlen -= strlen(tag) + 2;
if (2 * ielen > maxlen)
maxlen--;
printf("<");
for (; ielen > 0; ie++, ielen--) {
if (maxlen-- <= 0)
break;
printf("%02x", *ie);
}
if (ielen != 0)
printf("-");
printf(">");
}
}
/*
* Copy the ssid string contents into buf, truncating to fit. If the
* ssid is entirely printable then just copy intact. Otherwise convert
* to hexadecimal. If the result is truncated then replace the last
* three characters with "...".
*/
static int
copy_essid(char buf[], size_t bufsize, const u_int8_t *essid, size_t essid_len)
{
const u_int8_t *p;
int maxlen;
int i;
if (essid_len > bufsize)
maxlen = bufsize;
else
maxlen = essid_len;
/* determine printable or not */
for (i = 0, p = essid; i < maxlen; i++, p++) {
if (*p < ' ' || *p > 0x7e)
break;
}
if (i != maxlen) { /* not printable, print as hex */
if (bufsize < 3)
return 0;
#if 0
strlcpy(buf, "0x", bufsize);
#else
strncpy(buf, "0x", bufsize);
#endif
bufsize -= 2;
p = essid;
for (i = 0; i < maxlen && bufsize >= 2; i++) {
sprintf(&buf[2 + 2 * i], "%02x", *p++);
bufsize -= 2;
}
maxlen = 2 + 2 * i;
} else { /* printable, truncate as needed */
memcpy(buf, essid, maxlen);
}
if (maxlen != essid_len)
memcpy(buf+maxlen - 3, "...", 3);
return maxlen;
}
/* unaligned little endian access */
#define LE_READ_4(p) \
((u_int32_t) \
((((const u_int8_t *)(p))[0] ) | \
(((const u_int8_t *)(p))[1] << 8) | \
(((const u_int8_t *)(p))[2] << 16) | \
(((const u_int8_t *)(p))[3] << 24)))
static __inline int
iswpaoui(const u_int8_t *frm)
{
return frm[1] > 3 && LE_READ_4(frm + 2) == ((WPA_OUI_TYPE << 24) | WPA_OUI);
}
static __inline int
iswmeoui(const u_int8_t *frm)
{
return frm[1] > 3 && LE_READ_4(frm + 2) == ((WME_OUI_TYPE << 24) | WME_OUI);
}
static __inline int
isatherosoui(const u_int8_t *frm)
{
return frm[1] > 3 && LE_READ_4(frm + 2) == ((ATH_OUI_TYPE << 24) | ATH_OUI);
}
static void
printies(const u_int8_t *vp, int ielen, int maxcols)
{
while (ielen > 0) {
switch (vp[0]) {
case IEEE80211_ELEMID_VENDOR:
if (iswpaoui(vp))
printie(" WPA", vp, 2 + vp[1], maxcols);
else if (iswmeoui(vp))
printie(" WME", vp, 2 + vp[1], maxcols);
else if (isatherosoui(vp))
printie(" ATH", vp, 2 + vp[1], maxcols);
else
printie(" VEN", vp, 2 + vp[1], maxcols);
break;
case IEEE80211_ELEMID_RSN:
printie(" RSN", vp, 2 + vp[1], maxcols);
break;
default:
printie(" ???", vp, 2 + vp[1], maxcols);
break;
}
ielen -= 2 + vp[1];
vp += 2 + vp[1];
}
}
static const char *
ieee80211_ntoa(const uint8_t mac[IEEE80211_ADDR_LEN])
{
static char a[18];
int i;
i = snprintf(a, sizeof(a), "%02x:%02x:%02x:%02x:%02x:%02x",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
return (i < 17 ? NULL : a);
}
static void
list_stations(const char *ifname)
{
uint8_t buf[24 * 1024];
struct iwreq iwr;
uint8_t *cp;
int s, len;
s = socket(AF_INET, SOCK_DGRAM, 0);
if (s < 0)
err(1, "socket(SOCK_DGRAM)");
(void) memset(&iwr, 0, sizeof(iwr));
(void) strncpy(iwr.ifr_name, ifname, sizeof(iwr.ifr_name));
iwr.u.data.pointer = (void *)buf;
iwr.u.data.length = sizeof(buf);
if (ioctl(s, IEEE80211_IOCTL_STA_INFO, &iwr) < 0)
errx(1, "unable to get station information");
len = iwr.u.data.length;
if (len < sizeof(struct ieee80211req_sta_info))
return;
close(s);
printf("%-17.17s %4s %4s %4s %4s %4s %5s %6s %7s %6s %7s %4s %5s %3s %8s %8s\n",
"ADDR",
"AID",
"CHAN",
"RATE",
"RSSI",
"DBM",
"IDLE",
"TXSEQ",
"TXFRAG",
"RXSEQ",
"RXFRAG",
"CAPS",
"ACAPS",
"ERP",
"STATE",
"MODE");
cp = buf;
do {
struct ieee80211req_sta_info *si;
uint8_t *vp;
si = (struct ieee80211req_sta_info *)cp;
vp = (u_int8_t *)(si+1);
printf("%s %4u %4d %3dM %4d %4d %5d %6d %7d %6d %7d %-4.4s %-5.5s %3x %8x %8s",
ieee80211_ntoa(si->isi_macaddr),
IEEE80211_AID(si->isi_associd),
ieee80211_mhz2ieee(si->isi_freq),
(si->isi_rates[si->isi_txrate] & IEEE80211_RATE_VAL) / 2,
si->isi_rssi,
rssi2dbm(si->isi_rssi),
si->isi_inact,
(si->isi_txseqs[0] & IEEE80211_SEQ_SEQ_MASK)
>> IEEE80211_SEQ_SEQ_SHIFT,
si->isi_txseqs[0] & IEEE80211_SEQ_FRAG_MASK,
(si->isi_rxseqs[0] & IEEE80211_SEQ_SEQ_MASK)
>> IEEE80211_SEQ_SEQ_SHIFT,
si->isi_rxseqs[0] & IEEE80211_SEQ_FRAG_MASK,
getcaps(si->isi_capinfo),
getathcaps(si->isi_athflags),
si->isi_erp,
si->isi_state,
getstamode(si->isi_opmode));
printies(vp, si->isi_ie_len, 24);
printf("\n");
if (si->isi_uapsd) {
printf(" UAPSD QoSInfo: 0x%02x, ",
si->isi_uapsd);
printf("(VO,VI,BE,BK) = (%d,%d,%d,%d), MaxSpLimit = %s\n",
WME_UAPSD_AC_ENABLED(WME_AC_VO, si->isi_uapsd) ? 1 : 0,
WME_UAPSD_AC_ENABLED(WME_AC_VI, si->isi_uapsd) ? 1 : 0,
WME_UAPSD_AC_ENABLED(WME_AC_BE, si->isi_uapsd) ? 1 : 0,
WME_UAPSD_AC_ENABLED(WME_AC_BK, si->isi_uapsd) ? 1 : 0,
WME_UAPSD_MAXSP(si->isi_uapsd) == 1 ? "2" :
WME_UAPSD_MAXSP(si->isi_uapsd) == 2 ? "4" :
WME_UAPSD_MAXSP(si->isi_uapsd) == 3 ? "6" : "NoLimit");
}
cp += si->isi_len;
len -= si->isi_len;
} while (len >= sizeof(struct ieee80211req_sta_info));
}
/* unaligned little endian access */
#define LE_READ_4(p) \
((u_int32_t) \
((((const u_int8_t *)(p))[0] ) | \
(((const u_int8_t *)(p))[1] << 8) | \
(((const u_int8_t *)(p))[2] << 16) | \
(((const u_int8_t *)(p))[3] << 24)))
static void
list_scan(const char *ifname)
{
uint8_t buf[24 * 1024];
char ssid[14];
uint8_t *cp;
int len;
len = get80211priv(ifname, IEEE80211_IOCTL_SCAN_RESULTS,
buf, sizeof(buf));
if (len == -1)
errx(1, "unable to get scan results");
if (len < sizeof(struct ieee80211req_scan_result))
return;
printf("%-14.14s %-17.17s %4s %4s %-5s %3s %4s\n",
"SSID",
"BSSID",
"CHAN",
"RATE",
"S:N",
"INT",
"CAPS");
cp = buf;
do {
struct ieee80211req_scan_result *sr;
uint8_t *vp;
sr = (struct ieee80211req_scan_result *)cp;
vp = (u_int8_t *)(sr + 1);
printf("%-14.*s %s %3d %3dM %2d:%-2d %3d %-4.4s",
copy_essid(ssid, sizeof(ssid), vp, sr->isr_ssid_len),
ssid,
ieee80211_ntoa(sr->isr_bssid),
ieee80211_mhz2ieee(sr->isr_freq),
getmaxrate(sr->isr_rates, sr->isr_nrates),
(int8_t) sr->isr_rssi, sr->isr_noise,
sr->isr_intval,
getcaps(sr->isr_capinfo));
printies(vp + sr->isr_ssid_len, sr->isr_ie_len, 24);
printf("\n");
cp += sr->isr_len, len -= sr->isr_len;
} while (len >= sizeof(struct ieee80211req_scan_result));
}
static void
print_chaninfo(const struct ieee80211_channel *c)
{
char buf[14];
buf[0] = '\0';
if (IEEE80211_IS_CHAN_FHSS(c))
strlcat(buf, " FHSS", sizeof(buf));
if (IEEE80211_IS_CHAN_A(c))
strlcat(buf, " 11a", sizeof(buf));
/* XXX 11g schizophrenia */
if (IEEE80211_IS_CHAN_G(c) ||
IEEE80211_IS_CHAN_PUREG(c))
strlcat(buf, " 11g", sizeof(buf));
else if (IEEE80211_IS_CHAN_B(c))
strlcat(buf, " 11b", sizeof(buf));
if (IEEE80211_IS_CHAN_STURBO(c))
strlcat(buf, " Static", sizeof(buf));
if (IEEE80211_IS_CHAN_DTURBO(c))
strlcat(buf, " Dynamic", sizeof(buf));
if (IEEE80211_IS_CHAN_HALF(c))
strlcat(buf, " Half", sizeof(buf));
if (IEEE80211_IS_CHAN_QUARTER(c))
strlcat(buf, " Quarter", sizeof(buf));
printf("Channel %3u : %u%c%c Mhz%-14.14s",
c->ic_ieee, c->ic_freq,
IEEE80211_IS_CHAN_PASSIVE(c) ? '*' : ' ',
IEEE80211_IS_CHAN_RADAR(c) ? '!' : ' ',
buf);
}
static void
list_channels(const char *ifname, int allchans)
{
struct ieee80211req_chaninfo chans;
struct ieee80211req_chaninfo achans;
const struct ieee80211_channel *c;
int i, half;
if (get80211priv(ifname, IEEE80211_IOCTL_GETCHANINFO, &chans, sizeof(chans)) < 0)
errx(1, "unable to get channel information");
if (!allchans) {
uint8_t active[32];
if (get80211priv(ifname, IEEE80211_IOCTL_GETCHANLIST, &active, sizeof(active)) < 0)
errx(1, "unable to get active channel list");
memset(&achans, 0, sizeof(achans));
for (i = 0; i < chans.ic_nchans; i++) {
c = &chans.ic_chans[i];
if (isset(active, ieee80211_mhz2ieee(c->ic_freq)) || allchans)
achans.ic_chans[achans.ic_nchans++] = *c;
}
} else
achans = chans;
half = achans.ic_nchans / 2;
if (achans.ic_nchans % 2)
half++;
for (i = 0; i < achans.ic_nchans / 2; i++) {
print_chaninfo(&achans.ic_chans[i]);
print_chaninfo(&achans.ic_chans[half + i]);
printf("\n");
}
if (achans.ic_nchans % 2) {
print_chaninfo(&achans.ic_chans[i]);
printf("\n");
}
}
static void
list_keys(const char *ifname)
{
char cmd[256];
puts("[list_keys not implemented (yet). Spawning iwlist...]");
strcpy(cmd, "iwlist ");
strcat(cmd, ifname);
strcat(cmd, " key");
system(cmd);
}
#define IEEE80211_C_BITS \
"\020\1WEP\2TKIP\3AES\4AES_CCM\6CKIP\7FF\10TURBOP\11IBSS\12PMGT\13HOSTAP\14AHDEMO" \
"\15SWRETRY\16TXPMGT\17SHSLOT\20SHPREAMBLE\21MONITOR\22TKIPMIC\30WPA1" \
"\31WPA2\32BURST\33WME"
/*
* Print a value a la the %b format of the kernel's printf
*/
static void
printb(const char *s, unsigned v, const char *bits)
{
int i, any = 0;
char c;
if (bits && *bits == 8)
printf("%s=%o", s, v);
else
printf("%s=%x", s, v);
bits++;
if (bits) {
putchar('<');
while ((i = *bits++) != '\0') {
if (v & (1 << (i-1))) {
if (any)
putchar(',');
any = 1;
for (; (c = *bits) > 32; bits++)
putchar(c);
} else
for (; *bits > 32; bits++);
}
putchar('>');
}
}
static void
list_capabilities(const char *ifname)
{
u_int32_t caps;
if (get80211param(ifname, IEEE80211_PARAM_DRIVER_CAPS, &caps,
sizeof(caps)) < 0)
errx(1, "unable to get driver capabilities");
printb(ifname, caps, IEEE80211_C_BITS);
putchar('\n');
}
static void
list_wme(const char *ifname)
{
#define GETPARAM() \
(get80211priv(ifname, IEEE80211_IOCTL_GETWMMPARAMS, param, sizeof(param)) != -1)
static const char *acnames[] = { "AC_BE", "AC_BK", "AC_VI", "AC_VO" };
int param[3];
int ac;
param[2] = 0; /* channel params */
for (ac = WME_AC_BE; ac <= WME_AC_VO; ac++) {
again:
if (param[2] != 0)
printf("\t%s", " ");
else
printf("\t%s", acnames[ac]);
param[1] = ac;
/* show WME BSS parameters */
param[0] = IEEE80211_WMMPARAMS_CWMIN;
if (GETPARAM())
printf(" cwmin %2u", param[0]);
param[0] = IEEE80211_WMMPARAMS_CWMAX;
if (GETPARAM())
printf(" cwmax %2u", param[0]);
param[0] = IEEE80211_WMMPARAMS_AIFS;
if (GETPARAM())
printf(" aifs %2u", param[0]);
param[0] = IEEE80211_WMMPARAMS_TXOPLIMIT;
if (GETPARAM())
printf(" txopLimit %3u", param[0]);
param[0] = IEEE80211_WMMPARAMS_ACM;
if (GETPARAM()) {
if (param[0])
printf(" acm");
else if (verbose)
printf(" -acm");
}
/* !BSS only */
if (param[2] == 0) {
param[0] = IEEE80211_WMMPARAMS_NOACKPOLICY;
if (GETPARAM()) {
if (param[0])
printf(" -ack");
else if (verbose)
printf(" ack");
}
}
printf("\n");
if (param[2] == 0) {
param[2] = 1; /* bss params */
goto again;
} else
param[2] = 0;
}
}
static void
ieee80211_status(const char *ifname)
{
/* XXX fill in */
char cmd[256];
puts("[status not implemented (yet). Spawning iwconfig...]");
strcpy(cmd, "iwconfig ");
strcat(cmd, ifname);
system(cmd);
}
static int
getsocket(void)
{
static int s = -1;
if (s < 0) {
s = socket(AF_INET, SOCK_DGRAM, 0);
if (s < 0)
err(1, "socket(SOCK_DGRAM)");
}
return s;
}
static int
get80211param(const char *ifname, int param, void *data, size_t len)
{
struct iwreq iwr;
memset(&iwr, 0, sizeof(iwr));
strncpy(iwr.ifr_name, ifname, IFNAMSIZ);
iwr.u.mode = param;
if (ioctl(getsocket(), IEEE80211_IOCTL_GETPARAM, &iwr) < 0) {
perror("ioctl[IEEE80211_IOCTL_GETPARAM]");
return -1;
}
if (len < IFNAMSIZ) {
/*
* Argument data fits inline; put it there.
*/
memcpy(data, iwr.u.name, len);
}
return iwr.u.data.length;
}
#define IOCTL_ERR(x) [x - SIOCIWFIRSTPRIV] = "ioctl[" #x "]"
static int
do80211priv(struct iwreq *iwr, const char *ifname, int op, void *data, size_t len)
{
memset(iwr, 0, sizeof(struct iwreq));
strncpy(iwr->ifr_name, ifname, IFNAMSIZ);
if (len < IFNAMSIZ) {
/*
* Argument data fits inline; put it there.
*/
memcpy(iwr->u.name, data, len);
} else {
/*
* Argument data too big for inline transfer; setup a
* parameter block instead; the kernel will transfer
* the data for the driver.
*/
iwr->u.data.pointer = data;
iwr->u.data.length = len;
}
if (ioctl(getsocket(), op, iwr) < 0) {
static const char *opnames[] = {
IOCTL_ERR(IEEE80211_IOCTL_SETPARAM),
IOCTL_ERR(IEEE80211_IOCTL_GETPARAM),
IOCTL_ERR(IEEE80211_IOCTL_SETMODE),
IOCTL_ERR(IEEE80211_IOCTL_GETMODE),
IOCTL_ERR(IEEE80211_IOCTL_SETWMMPARAMS),
IOCTL_ERR(IEEE80211_IOCTL_GETWMMPARAMS),
IOCTL_ERR(IEEE80211_IOCTL_SETCHANLIST),
IOCTL_ERR(IEEE80211_IOCTL_GETCHANLIST),
IOCTL_ERR(IEEE80211_IOCTL_CHANSWITCH),
IOCTL_ERR(IEEE80211_IOCTL_GETCHANINFO),
IOCTL_ERR(IEEE80211_IOCTL_SETOPTIE),
IOCTL_ERR(IEEE80211_IOCTL_GETOPTIE),
IOCTL_ERR(IEEE80211_IOCTL_SETMLME),
IOCTL_ERR(IEEE80211_IOCTL_RADAR),
IOCTL_ERR(IEEE80211_IOCTL_SETKEY),
IOCTL_ERR(IEEE80211_IOCTL_DELKEY),
IOCTL_ERR(IEEE80211_IOCTL_HALMAP),
IOCTL_ERR(IEEE80211_IOCTL_ADDMAC),
IOCTL_ERR(IEEE80211_IOCTL_DELMAC),
IOCTL_ERR(IEEE80211_IOCTL_WDSADDMAC),
IOCTL_ERR(IEEE80211_IOCTL_WDSDELMAC),
};
op -= SIOCIWFIRSTPRIV;
if (0 <= op && op < ARRAY_SIZE(opnames))
perror(opnames[op]);
else
perror("ioctl[unknown???]");
return -1;
}
return 0;
}
static int
get80211priv(const char *ifname, int op, void *data, size_t len)
{
struct iwreq iwr;
if (do80211priv(&iwr, ifname, op, data, len) < 0)
return -1;
if (len < IFNAMSIZ)
memcpy(data, iwr.u.name, len);
return iwr.u.data.length;
}
/*
* Appends src to string dst of size siz (unlike strncat, siz is the
* full size of dst, not space left). At most siz-1 characters
* will be copied. Always NUL terminates (unless siz <= strlen(dst)).
* Returns strlen(src) + MIN(siz, strlen(initial dst)).
* If retval >= siz, truncation occurred.
*/
size_t
strlcat(char *dst, const char *src, size_t siz)
{
char *d = dst;
const char *s = src;
size_t n = siz;
size_t dlen;
/* Find the end of dst and adjust bytes left but don't go past end */
while (n-- != 0 && *d != '\0')
d++;
dlen = d - dst;
n = siz - dlen;
if (n == 0)
return(dlen + strlen(s));
while (*s != '\0') {
if (n != 1) {
*d++ = *s;
n--;
}
s++;
}
*d = '\0';
return(dlen + (s - src)); /* count does not include NUL */
}
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