1/* $NetBSD: ieee80211.c,v 1.31 2021/08/13 20:47:55 andvar Exp $ */ 2 3/* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. 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 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33#ifndef lint 34__RCSID("$NetBSD: ieee80211.c,v 1.31 2021/08/13 20:47:55 andvar Exp $"); 35#endif /* not lint */ 36 37#include <sys/param.h> 38#include <sys/ioctl.h> 39#include <sys/socket.h> 40 41#include <net/if.h> 42#include <net/if_ether.h> 43#include <net/if_media.h> 44#include <net/route.h> 45#include <net80211/ieee80211.h> 46#include <net80211/ieee80211_ioctl.h> 47#include <net80211/ieee80211_netbsd.h> 48 49#include <assert.h> 50#include <ctype.h> 51#include <err.h> 52#include <errno.h> 53#include <netdb.h> 54#include <string.h> 55#include <stddef.h> 56#include <stdlib.h> 57#include <stdio.h> 58#include <unistd.h> 59#include <util.h> 60 61#include "extern.h" 62#include "parse.h" 63#include "env.h" 64#include "util.h" 65#include "prog_ops.h" 66 67static void ieee80211_statistics(prop_dictionary_t); 68static void ieee80211_status(prop_dictionary_t, prop_dictionary_t); 69static void ieee80211_constructor(void) __attribute__((constructor)); 70static int set80211(prop_dictionary_t env, uint16_t, int16_t, int16_t, 71 u_int8_t *); 72static u_int ieee80211_mhz2ieee(u_int, u_int); 73static int getmaxrate(const uint8_t [15], u_int8_t); 74static const char * getcaps(int); 75static void printie(const char*, const uint8_t *, size_t, int); 76static int copy_essid(char [], size_t, const u_int8_t *, size_t); 77static void scan_and_wait(prop_dictionary_t); 78static void list_scan(prop_dictionary_t); 79static int mappsb(u_int , u_int); 80static int mapgsm(u_int , u_int); 81 82static int sethidessid(prop_dictionary_t, prop_dictionary_t); 83static int setapbridge(prop_dictionary_t, prop_dictionary_t); 84static int setifssid(prop_dictionary_t, prop_dictionary_t); 85static int setifnwkey(prop_dictionary_t, prop_dictionary_t); 86static int unsetifnwkey(prop_dictionary_t, prop_dictionary_t); 87static int unsetifbssid(prop_dictionary_t, prop_dictionary_t); 88static int setifbssid(prop_dictionary_t, prop_dictionary_t); 89static int setifchan(prop_dictionary_t, prop_dictionary_t); 90static int setiffrag(prop_dictionary_t, prop_dictionary_t); 91static int setifpowersave(prop_dictionary_t, prop_dictionary_t); 92static int setifpowersavesleep(prop_dictionary_t, prop_dictionary_t); 93static int setifrts(prop_dictionary_t, prop_dictionary_t); 94static int scan_exec(prop_dictionary_t, prop_dictionary_t); 95 96static void printies(const u_int8_t *, int, int); 97static void printwmeparam(const char *, const u_int8_t *, size_t , int); 98static void printwmeinfo(const char *, const u_int8_t *, size_t , int); 99static const char * wpa_cipher(const u_int8_t *); 100static const char * wpa_keymgmt(const u_int8_t *); 101static void printwpaie(const char *, const u_int8_t *, size_t , int); 102static const char * rsn_cipher(const u_int8_t *); 103static const char * rsn_keymgmt(const u_int8_t *); 104static void printrsnie(const char *, const u_int8_t *, size_t , int); 105static void printssid(const char *, const u_int8_t *, size_t , int); 106static void printrates(const char *, const u_int8_t *, size_t , int); 107static void printcountry(const char *, const u_int8_t *, size_t , int); 108static int iswpaoui(const u_int8_t *); 109static int iswmeinfo(const u_int8_t *); 110static int iswmeparam(const u_int8_t *); 111static const char * iename(int); 112 113extern struct pinteger parse_chan, parse_frag, parse_rts; 114extern struct pstr parse_bssid, parse_ssid, parse_nwkey; 115extern struct pinteger parse_powersavesleep; 116 117static const struct kwinst ieee80211boolkw[] = { 118 {.k_word = "hidessid", .k_key = "hidessid", .k_neg = true, 119 .k_type = KW_T_BOOL, .k_bool = true, .k_negbool = false, 120 .k_exec = sethidessid} 121 , {.k_word = "apbridge", .k_key = "apbridge", .k_neg = true, 122 .k_type = KW_T_BOOL, .k_bool = true, .k_negbool = false, 123 .k_exec = setapbridge} 124 , {.k_word = "powersave", .k_key = "powersave", .k_neg = true, 125 .k_type = KW_T_BOOL, .k_bool = true, .k_negbool = false, 126 .k_exec = setifpowersave} 127}; 128 129static const struct kwinst listskw[] = { 130 {.k_word = "scan", .k_exec = scan_exec} 131}; 132 133static struct pkw lists = PKW_INITIALIZER(&lists, "ieee80211 lists", NULL, 134 "list", listskw, __arraycount(listskw), &command_root.pb_parser); 135 136static const struct kwinst kw80211kw[] = { 137 {.k_word = "bssid", .k_nextparser = &parse_bssid.ps_parser} 138 , {.k_word = "-bssid", .k_exec = unsetifbssid, 139 .k_nextparser = &command_root.pb_parser} 140 , {.k_word = "chan", .k_nextparser = &parse_chan.pi_parser} 141 , {.k_word = "-chan", .k_key = "chan", .k_type = KW_T_UINT, 142 .k_uint = IEEE80211_CHAN_ANY, .k_exec = setifchan, 143 .k_nextparser = &command_root.pb_parser} 144 , {.k_word = "frag", .k_nextparser = &parse_frag.pi_parser} 145 , {.k_word = "-frag", .k_key = "frag", .k_type = KW_T_INT, 146 .k_int = IEEE80211_FRAG_MAX, .k_exec = setiffrag, 147 .k_nextparser = &command_root.pb_parser} 148 , {.k_word = "list", .k_nextparser = &lists.pk_parser} 149 , {.k_word = "nwid", .k_nextparser = &parse_ssid.ps_parser} 150 , {.k_word = "nwkey", .k_nextparser = &parse_nwkey.ps_parser} 151 , {.k_word = "-nwkey", .k_exec = unsetifnwkey, 152 .k_nextparser = &command_root.pb_parser} 153 , {.k_word = "rts", .k_nextparser = &parse_rts.pi_parser} 154 , {.k_word = "-rts", .k_key = "rts", .k_type = KW_T_INT, 155 .k_int = IEEE80211_RTS_MAX, .k_exec = setifrts, 156 .k_nextparser = &command_root.pb_parser} 157 , {.k_word = "ssid", .k_nextparser = &parse_ssid.ps_parser} 158 , {.k_word = "powersavesleep", 159 .k_nextparser = &parse_powersavesleep.pi_parser} 160}; 161 162struct pkw kw80211 = PKW_INITIALIZER(&kw80211, "802.11 keywords", NULL, NULL, 163 kw80211kw, __arraycount(kw80211kw), NULL); 164 165struct pkw ieee80211bool = PKW_INITIALIZER(&ieee80211bool, "ieee80211 boolean", 166 NULL, NULL, ieee80211boolkw, __arraycount(ieee80211boolkw), 167 &command_root.pb_parser); 168 169struct pinteger parse_chan = PINTEGER_INITIALIZER1(&parse_chan, "chan", 170 0, UINT16_MAX, 10, setifchan, "chan", &command_root.pb_parser); 171 172struct pinteger parse_rts = PINTEGER_INITIALIZER1(&parse_rts, "rts", 173 IEEE80211_RTS_MIN, IEEE80211_RTS_MAX, 10, 174 setifrts, "rts", &command_root.pb_parser); 175 176struct pinteger parse_frag = PINTEGER_INITIALIZER1(&parse_frag, "frag", 177 IEEE80211_FRAG_MIN, IEEE80211_FRAG_MAX, 10, 178 setiffrag, "frag", &command_root.pb_parser); 179 180struct pstr parse_ssid = PSTR_INITIALIZER(&parse_pass, "ssid", setifssid, 181 "ssid", &command_root.pb_parser); 182 183struct pinteger parse_powersavesleep = 184 PINTEGER_INITIALIZER1(&parse_powersavesleep, "powersavesleep", 185 0, INT_MAX, 10, setifpowersavesleep, "powersavesleep", 186 &command_root.pb_parser); 187 188struct pstr parse_nwkey = PSTR_INITIALIZER1(&parse_nwkey, "nwkey", setifnwkey, 189 "nwkey", false, &command_root.pb_parser); 190 191struct pstr parse_bssid = PSTR_INITIALIZER1(&parse_bssid, "bssid", setifbssid, 192 "bssid", false, &command_root.pb_parser); 193 194static int 195set80211(prop_dictionary_t env, uint16_t type, int16_t val, int16_t len, 196 u_int8_t *data) 197{ 198 struct ieee80211req ireq; 199 200 memset(&ireq, 0, sizeof(ireq)); 201 ireq.i_type = type; 202 ireq.i_val = val; 203 ireq.i_len = len; 204 ireq.i_data = data; 205 if (direct_ioctl(env, SIOCS80211, &ireq) == -1) { 206 warn("SIOCS80211"); 207 return -1; 208 } 209 return 0; 210} 211 212static int 213sethidessid(prop_dictionary_t env, prop_dictionary_t oenv) 214{ 215 bool on, rc; 216 217 rc = prop_dictionary_get_bool(env, "hidessid", &on); 218 assert(rc); 219 return set80211(env, IEEE80211_IOC_HIDESSID, on ? 1 : 0, 0, NULL); 220} 221 222static int 223setapbridge(prop_dictionary_t env, prop_dictionary_t oenv) 224{ 225 bool on, rc; 226 227 rc = prop_dictionary_get_bool(env, "apbridge", &on); 228 assert(rc); 229 return set80211(env, IEEE80211_IOC_APBRIDGE, on ? 1 : 0, 0, NULL); 230} 231 232static enum ieee80211_opmode 233get80211opmode(prop_dictionary_t env) 234{ 235 struct ifmediareq ifmr; 236 237 memset(&ifmr, 0, sizeof(ifmr)); 238 if (direct_ioctl(env, SIOCGIFMEDIA, &ifmr) == -1) 239 ; 240 else if (ifmr.ifm_current & IFM_IEEE80211_ADHOC) 241 return IEEE80211_M_IBSS; /* XXX ahdemo */ 242 else if (ifmr.ifm_current & IFM_IEEE80211_HOSTAP) 243 return IEEE80211_M_HOSTAP; 244 else if (ifmr.ifm_current & IFM_IEEE80211_MONITOR) 245 return IEEE80211_M_MONITOR; 246 247 return IEEE80211_M_STA; 248} 249 250static int 251setifssid(prop_dictionary_t env, prop_dictionary_t oenv) 252{ 253 struct ieee80211_nwid nwid; 254 ssize_t len; 255 256 memset(&nwid, 0, sizeof(nwid)); 257 if ((len = getargdata(env, "ssid", nwid.i_nwid, 258 sizeof(nwid.i_nwid))) == -1) 259 errx(EXIT_FAILURE, "%s: SSID too long", __func__); 260 nwid.i_len = (uint8_t)len; 261 if (indirect_ioctl(env, SIOCS80211NWID, &nwid) == -1) 262 err(EXIT_FAILURE, "SIOCS80211NWID"); 263 return 0; 264} 265 266static int 267unsetifbssid(prop_dictionary_t env, prop_dictionary_t oenv) 268{ 269 struct ieee80211_bssid bssid; 270 271 memset(&bssid, 0, sizeof(bssid)); 272 273 if (direct_ioctl(env, SIOCS80211BSSID, &bssid) == -1) 274 err(EXIT_FAILURE, "SIOCS80211BSSID"); 275 return 0; 276} 277 278static int 279setifbssid(prop_dictionary_t env, prop_dictionary_t oenv) 280{ 281 char buf[24]; 282 struct ieee80211_bssid bssid; 283 struct ether_addr *ea; 284 285 if (getargstr(env, "bssid", buf, sizeof(buf)) == -1) 286 errx(EXIT_FAILURE, "%s: BSSID too long", __func__); 287 288 ea = ether_aton(buf); 289 if (ea == NULL) { 290 errx(EXIT_FAILURE, "malformed BSSID: %s", buf); 291 return -1; 292 } 293 memcpy(&bssid.i_bssid, ea->ether_addr_octet, 294 sizeof(bssid.i_bssid)); 295 296 if (direct_ioctl(env, SIOCS80211BSSID, &bssid) == -1) 297 err(EXIT_FAILURE, "SIOCS80211BSSID"); 298 return 0; 299} 300 301static int 302setifrts(prop_dictionary_t env, prop_dictionary_t oenv) 303{ 304 bool rc; 305 int16_t val; 306 307 rc = prop_dictionary_get_int16(env, "rts", &val); 308 assert(rc); 309 if (set80211(env, IEEE80211_IOC_RTSTHRESHOLD, val, 0, NULL) == -1) 310 err(EXIT_FAILURE, "IEEE80211_IOC_RTSTHRESHOLD"); 311 return 0; 312} 313 314static int 315setiffrag(prop_dictionary_t env, prop_dictionary_t oenv) 316{ 317 bool rc; 318 int16_t val; 319 320 rc = prop_dictionary_get_int16(env, "frag", &val); 321 assert(rc); 322 if (set80211(env, IEEE80211_IOC_FRAGTHRESHOLD, val, 0, NULL) == -1) 323 err(EXIT_FAILURE, "IEEE80211_IOC_FRAGTHRESHOLD"); 324 return 0; 325} 326 327static int 328setifchan(prop_dictionary_t env, prop_dictionary_t oenv) 329{ 330 bool rc; 331 struct ieee80211chanreq channel; 332 333 rc = prop_dictionary_get_uint16(env, "chan", &channel.i_channel); 334 assert(rc); 335 if (direct_ioctl(env, SIOCS80211CHANNEL, &channel) == -1) 336 err(EXIT_FAILURE, "SIOCS80211CHANNEL"); 337 return 0; 338} 339 340static int 341setifnwkey(prop_dictionary_t env, prop_dictionary_t oenv) 342{ 343 const char *val; 344 char buf[256]; 345 struct ieee80211_nwkey nwkey; 346 int i; 347 u_int8_t keybuf[IEEE80211_WEP_NKID][16]; 348 349 if (getargstr(env, "nwkey", buf, sizeof(buf)) == -1) 350 errx(EXIT_FAILURE, "%s: nwkey too long", __func__); 351 352 val = buf; 353 354 nwkey.i_wepon = IEEE80211_NWKEY_WEP; 355 nwkey.i_defkid = 1; 356 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 357 nwkey.i_key[i].i_keylen = sizeof(keybuf[i]); 358 nwkey.i_key[i].i_keydat = keybuf[i]; 359 } 360 if (strcasecmp("persist", val) == 0) { 361 /* use all values from persistent memory */ 362 nwkey.i_wepon |= IEEE80211_NWKEY_PERSIST; 363 nwkey.i_defkid = 0; 364 for (i = 0; i < IEEE80211_WEP_NKID; i++) 365 nwkey.i_key[i].i_keylen = -1; 366 } else if (strncasecmp("persist:", val, 8) == 0) { 367 val += 8; 368 /* program keys in persistent memory */ 369 nwkey.i_wepon |= IEEE80211_NWKEY_PERSIST; 370 goto set_nwkey; 371 } else { 372 set_nwkey: 373 if (isdigit((unsigned char)val[0]) && val[1] == ':') { 374 /* specifying a full set of four keys */ 375 nwkey.i_defkid = val[0] - '0'; 376 val += 2; 377 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 378 val = get_string(val, ",", keybuf[i], 379 &nwkey.i_key[i].i_keylen, true); 380 if (val == NULL) { 381 errno = EINVAL; 382 return -1; 383 } 384 } 385 if (*val != '\0') { 386 errx(EXIT_FAILURE, "SIOCS80211NWKEY: too many keys."); 387 } 388 } else { 389 val = get_string(val, NULL, keybuf[0], 390 &nwkey.i_key[0].i_keylen, true); 391 if (val == NULL) { 392 errno = EINVAL; 393 return -1; 394 } 395 i = 1; 396 } 397 } 398 for (; i < IEEE80211_WEP_NKID; i++) 399 nwkey.i_key[i].i_keylen = 0; 400 401 if (direct_ioctl(env, SIOCS80211NWKEY, &nwkey) == -1) 402 err(EXIT_FAILURE, "SIOCS80211NWKEY"); 403 return 0; 404} 405 406static int 407unsetifnwkey(prop_dictionary_t env, prop_dictionary_t oenv) 408{ 409 struct ieee80211_nwkey nwkey; 410 int i; 411 412 nwkey.i_wepon = 0; 413 nwkey.i_defkid = 1; 414 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 415 nwkey.i_key[i].i_keylen = 0; 416 nwkey.i_key[i].i_keydat = NULL; 417 } 418 419 if (direct_ioctl(env, SIOCS80211NWKEY, &nwkey) == -1) 420 err(EXIT_FAILURE, "SIOCS80211NWKEY"); 421 return 0; 422} 423 424static int 425setifpowersave(prop_dictionary_t env, prop_dictionary_t oenv) 426{ 427 struct ieee80211_power power; 428 bool on, rc; 429 430 if (direct_ioctl(env, SIOCG80211POWER, &power) == -1) 431 err(EXIT_FAILURE, "SIOCG80211POWER"); 432 433 rc = prop_dictionary_get_bool(env, "powersave", &on); 434 assert(rc); 435 436 power.i_enabled = on ? 1 : 0; 437 if (direct_ioctl(env, SIOCS80211POWER, &power) == -1) { 438 warn("SIOCS80211POWER"); 439 return -1; 440 } 441 return 0; 442} 443 444static int 445setifpowersavesleep(prop_dictionary_t env, prop_dictionary_t oenv) 446{ 447 struct ieee80211_power power; 448 int64_t maxsleep; 449 bool rc; 450 451 rc = prop_dictionary_get_int64(env, "powersavesleep", &maxsleep); 452 assert(rc); 453 454 if (direct_ioctl(env, SIOCG80211POWER, &power) == -1) 455 err(EXIT_FAILURE, "SIOCG80211POWER"); 456 457 power.i_maxsleep = maxsleep; 458 if (direct_ioctl(env, SIOCS80211POWER, &power) == -1) 459 err(EXIT_FAILURE, "SIOCS80211POWER"); 460 return 0; 461} 462 463static int 464scan_exec(prop_dictionary_t env, prop_dictionary_t oenv) 465{ 466 struct ifreq ifr; 467 468 if (direct_ioctl(env, SIOCGIFFLAGS, &ifr) == -1) { 469 warn("ioctl(SIOCGIFFLAGS)"); 470 return -1; 471 } 472 473 if ((ifr.ifr_flags & IFF_UP) == 0) 474 errx(EXIT_FAILURE, "The interface must be up before scanning."); 475 476 scan_and_wait(env); 477 list_scan(env); 478 479 return 0; 480} 481 482static void 483ieee80211_statistics(prop_dictionary_t env) 484{ 485#ifndef SMALL 486 struct ieee80211_stats stats; 487 struct ifreq ifr; 488 489 memset(&ifr, 0, sizeof(ifr)); 490 ifr.ifr_buflen = sizeof(stats); 491 ifr.ifr_buf = (caddr_t)&stats; 492 if (direct_ioctl(env, (zflag) ? SIOCG80211ZSTATS : SIOCG80211STATS, 493 &ifr) == -1) 494 return; 495#define STAT_PRINT(_member, _desc) \ 496 printf("\t" _desc ": %" PRIu32 "\n", stats._member) 497 498 STAT_PRINT(is_rx_badversion, "rx frame with bad version"); 499 STAT_PRINT(is_rx_tooshort, "rx frame too short"); 500 STAT_PRINT(is_rx_wrongbss, "rx from wrong bssid"); 501 STAT_PRINT(is_rx_dup, "rx discard 'cuz dup"); 502 STAT_PRINT(is_rx_wrongdir, "rx w/ wrong direction"); 503 STAT_PRINT(is_rx_mcastecho, "rx discard 'cuz mcast echo"); 504 STAT_PRINT(is_rx_notassoc, "rx discard 'cuz sta !assoc"); 505 STAT_PRINT(is_rx_noprivacy, "rx w/ wep but privacy off"); 506 STAT_PRINT(is_rx_unencrypted, "rx w/o wep and privacy on"); 507 STAT_PRINT(is_rx_wepfail, "rx wep processing failed"); 508 STAT_PRINT(is_rx_decap, "rx decapsulation failed"); 509 STAT_PRINT(is_rx_mgtdiscard, "rx discard mgt frames"); 510 STAT_PRINT(is_rx_ctl, "rx discard ctrl frames"); 511 STAT_PRINT(is_rx_beacon, "rx beacon frames"); 512 STAT_PRINT(is_rx_rstoobig, "rx rate set truncated"); 513 STAT_PRINT(is_rx_elem_missing, "rx required element missing"); 514 STAT_PRINT(is_rx_elem_toobig, "rx element too big"); 515 STAT_PRINT(is_rx_elem_toosmall, "rx element too small"); 516 STAT_PRINT(is_rx_elem_unknown, "rx element unknown"); 517 STAT_PRINT(is_rx_badchan, "rx frame w/ invalid chan"); 518 STAT_PRINT(is_rx_chanmismatch, "rx frame chan mismatch"); 519 STAT_PRINT(is_rx_nodealloc, "rx frame dropped"); 520 STAT_PRINT(is_rx_ssidmismatch, "rx frame ssid mismatch "); 521 STAT_PRINT(is_rx_auth_unsupported, "rx w/ unsupported auth alg"); 522 STAT_PRINT(is_rx_auth_fail, "rx sta auth failure"); 523 STAT_PRINT(is_rx_auth_countermeasures, "rx auth discard 'cuz CM"); 524 STAT_PRINT(is_rx_assoc_bss, "rx assoc from wrong bssid"); 525 STAT_PRINT(is_rx_assoc_notauth, "rx assoc w/o auth"); 526 STAT_PRINT(is_rx_assoc_capmismatch, "rx assoc w/ cap mismatch"); 527 STAT_PRINT(is_rx_assoc_norate, "rx assoc w/ no rate match"); 528 STAT_PRINT(is_rx_assoc_badwpaie, "rx assoc w/ bad WPA IE"); 529 STAT_PRINT(is_rx_deauth, "rx deauthentication"); 530 STAT_PRINT(is_rx_disassoc, "rx disassociation"); 531 STAT_PRINT(is_rx_badsubtype, "rx frame w/ unknown subtyp"); 532 STAT_PRINT(is_rx_nobuf, "rx failed for lack of buf"); 533 STAT_PRINT(is_rx_decryptcrc, "rx decrypt failed on crc"); 534 STAT_PRINT(is_rx_ahdemo_mgt, "rx discard ahdemo mgt frame"); 535 STAT_PRINT(is_rx_bad_auth, "rx bad auth request"); 536 STAT_PRINT(is_rx_unauth, "rx on unauthorized port"); 537 STAT_PRINT(is_rx_badkeyid, "rx w/ incorrect keyid"); 538 STAT_PRINT(is_rx_ccmpreplay, "rx seq# violation (CCMP)"); 539 STAT_PRINT(is_rx_ccmpformat, "rx format bad (CCMP)"); 540 STAT_PRINT(is_rx_ccmpmic, "rx MIC check failed (CCMP)"); 541 STAT_PRINT(is_rx_tkipreplay, "rx seq# violation (TKIP)"); 542 STAT_PRINT(is_rx_tkipformat, "rx format bad (TKIP)"); 543 STAT_PRINT(is_rx_tkipmic, "rx MIC check failed (TKIP)"); 544 STAT_PRINT(is_rx_tkipicv, "rx ICV check failed (TKIP)"); 545 STAT_PRINT(is_rx_badcipher, "rx failed 'cuz key type"); 546 STAT_PRINT(is_rx_nocipherctx, "rx failed 'cuz key !setup"); 547 STAT_PRINT(is_rx_acl, "rx discard 'cuz acl policy"); 548 549 STAT_PRINT(is_tx_nobuf, "tx failed for lack of buf"); 550 STAT_PRINT(is_tx_nonode, "tx failed for no node"); 551 STAT_PRINT(is_tx_unknownmgt, "tx of unknown mgt frame"); 552 STAT_PRINT(is_tx_badcipher, "tx failed 'cuz key type"); 553 STAT_PRINT(is_tx_nodefkey, "tx failed 'cuz no defkey"); 554 STAT_PRINT(is_tx_noheadroom, "tx failed 'cuz no space"); 555 STAT_PRINT(is_tx_fragframes, "tx frames fragmented"); 556 STAT_PRINT(is_tx_frags, "tx fragments created"); 557 558 STAT_PRINT(is_scan_active, "active scans started"); 559 STAT_PRINT(is_scan_passive, "passive scans started"); 560 STAT_PRINT(is_node_timeout, "nodes timed out inactivity"); 561 STAT_PRINT(is_crypto_nomem, "no memory for crypto ctx"); 562 STAT_PRINT(is_crypto_tkip, "tkip crypto done in s/w"); 563 STAT_PRINT(is_crypto_tkipenmic, "tkip en-MIC done in s/w"); 564 STAT_PRINT(is_crypto_tkipdemic, "tkip de-MIC done in s/w"); 565 STAT_PRINT(is_crypto_tkipcm, "tkip counter measures"); 566 STAT_PRINT(is_crypto_ccmp, "ccmp crypto done in s/w"); 567 STAT_PRINT(is_crypto_wep, "wep crypto done in s/w"); 568 STAT_PRINT(is_crypto_setkey_cipher, "cipher rejected key"); 569 STAT_PRINT(is_crypto_setkey_nokey, "no key index for setkey"); 570 STAT_PRINT(is_crypto_delkey, "driver key delete failed"); 571 STAT_PRINT(is_crypto_badcipher, "unknown cipher"); 572 STAT_PRINT(is_crypto_nocipher, "cipher not available"); 573 STAT_PRINT(is_crypto_attachfail, "cipher attach failed"); 574 STAT_PRINT(is_crypto_swfallback, "cipher fallback to s/w"); 575 STAT_PRINT(is_crypto_keyfail, "driver key alloc failed"); 576 STAT_PRINT(is_crypto_enmicfail, "en-MIC failed"); 577 STAT_PRINT(is_ibss_capmismatch, "merge failed-cap mismatch"); 578 STAT_PRINT(is_ibss_norate, "merge failed-rate mismatch"); 579 STAT_PRINT(is_ps_unassoc, "ps-poll for unassoc. sta"); 580 STAT_PRINT(is_ps_badaid, "ps-poll w/ incorrect aid"); 581 STAT_PRINT(is_ps_qempty, "ps-poll w/ nothing to send"); 582 STAT_PRINT(is_ff_badhdr, "fast frame rx'd w/ bad hdr"); 583 STAT_PRINT(is_ff_tooshort, "fast frame rx decap error"); 584 STAT_PRINT(is_ff_split, "fast frame rx split error"); 585 STAT_PRINT(is_ff_decap, "fast frames decap'd"); 586 STAT_PRINT(is_ff_encap, "fast frames encap'd for tx"); 587 STAT_PRINT(is_rx_badbintval, "rx frame w/ bogus bintval"); 588#endif 589} 590 591static void 592ieee80211_status(prop_dictionary_t env, prop_dictionary_t oenv) 593{ 594 int i, nwkey_verbose; 595 struct ieee80211_nwid nwid; 596 struct ieee80211_nwkey nwkey; 597 struct ieee80211_power power; 598 u_int8_t keybuf[IEEE80211_WEP_NKID][16]; 599 struct ieee80211_bssid bssid; 600 struct ieee80211chanreq channel; 601 struct ieee80211req ireq; 602 struct ether_addr ea; 603 static const u_int8_t zero_macaddr[IEEE80211_ADDR_LEN]; 604 enum ieee80211_opmode opmode = get80211opmode(env); 605 606 memset(&bssid, 0, sizeof(bssid)); 607 memset(&nwkey, 0, sizeof(nwkey)); 608 memset(&nwid, 0, sizeof(nwid)); 609 memset(&nwid, 0, sizeof(nwid)); 610 611 if (indirect_ioctl(env, SIOCG80211NWID, &nwid) == -1) 612 return; 613 if (nwid.i_len > IEEE80211_NWID_LEN) { 614 errx(EXIT_FAILURE, "SIOCG80211NWID: wrong length of nwid (%d)", nwid.i_len); 615 } 616 printf("\tssid "); 617 print_string(nwid.i_nwid, nwid.i_len); 618 619 if (opmode == IEEE80211_M_HOSTAP) { 620 ireq.i_type = IEEE80211_IOC_HIDESSID; 621 if (direct_ioctl(env, SIOCG80211, &ireq) != -1) { 622 if (ireq.i_val) 623 printf(" [hidden]"); 624 else if (vflag) 625 printf(" [shown]"); 626 } 627 628 ireq.i_type = IEEE80211_IOC_APBRIDGE; 629 if (direct_ioctl(env, SIOCG80211, &ireq) != -1) { 630 if (ireq.i_val) 631 printf(" apbridge"); 632 else if (vflag) 633 printf(" -apbridge"); 634 } 635 } 636 637 ireq.i_type = IEEE80211_IOC_RTSTHRESHOLD; 638 if (direct_ioctl(env, SIOCG80211, &ireq) == -1) 639 ; 640 else if (ireq.i_val < IEEE80211_RTS_MAX) 641 printf(" rts %d", ireq.i_val); 642 else if (vflag) 643 printf(" -rts"); 644 645 ireq.i_type = IEEE80211_IOC_FRAGTHRESHOLD; 646 if (direct_ioctl(env, SIOCG80211, &ireq) == -1) 647 ; 648 else if (ireq.i_val < IEEE80211_FRAG_MAX) 649 printf(" frag %d", ireq.i_val); 650 else if (vflag) 651 printf(" -frag"); 652 653 memset(&nwkey, 0, sizeof(nwkey)); 654 /* show nwkey only when WEP is enabled */ 655 if (direct_ioctl(env, SIOCG80211NWKEY, &nwkey) == -1 || 656 nwkey.i_wepon == 0) { 657 printf("\n"); 658 goto skip_wep; 659 } 660 661 printf(" nwkey "); 662 /* try to retrieve WEP keys */ 663 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 664 nwkey.i_key[i].i_keydat = keybuf[i]; 665 nwkey.i_key[i].i_keylen = sizeof(keybuf[i]); 666 } 667 if (direct_ioctl(env, SIOCG80211NWKEY, &nwkey) == -1) { 668 printf("*****"); 669 } else { 670 nwkey_verbose = 0; 671 /* check to see non default key or multiple keys defined */ 672 if (nwkey.i_defkid != 1) { 673 nwkey_verbose = 1; 674 } else { 675 for (i = 1; i < IEEE80211_WEP_NKID; i++) { 676 if (nwkey.i_key[i].i_keylen != 0) { 677 nwkey_verbose = 1; 678 break; 679 } 680 } 681 } 682 /* check extra ambiguity with keywords */ 683 if (!nwkey_verbose) { 684 if (nwkey.i_key[0].i_keylen >= 2 && 685 isdigit(nwkey.i_key[0].i_keydat[0]) && 686 nwkey.i_key[0].i_keydat[1] == ':') 687 nwkey_verbose = 1; 688 else if (nwkey.i_key[0].i_keylen >= 7 && 689 strncasecmp("persist", 690 (const char *)nwkey.i_key[0].i_keydat, 7) == 0) 691 nwkey_verbose = 1; 692 } 693 if (nwkey_verbose) 694 printf("%d:", nwkey.i_defkid); 695 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 696 if (i > 0) 697 printf(","); 698 if (nwkey.i_key[i].i_keylen < 0) 699 printf("persist"); 700 else 701 print_string(nwkey.i_key[i].i_keydat, 702 nwkey.i_key[i].i_keylen); 703 if (!nwkey_verbose) 704 break; 705 } 706 } 707 printf("\n"); 708 709 skip_wep: 710 if (direct_ioctl(env, SIOCG80211POWER, &power) == -1) 711 goto skip_power; 712 printf("\tpowersave "); 713 if (power.i_enabled) 714 printf("on (%dms sleep)", power.i_maxsleep); 715 else 716 printf("off"); 717 printf("\n"); 718 719 skip_power: 720 if (direct_ioctl(env, SIOCG80211BSSID, &bssid) == -1) 721 return; 722 if (direct_ioctl(env, SIOCG80211CHANNEL, &channel) == -1) 723 return; 724 if (memcmp(bssid.i_bssid, zero_macaddr, IEEE80211_ADDR_LEN) == 0) { 725 if (channel.i_channel != (u_int16_t)-1) 726 printf("\tchan %d\n", channel.i_channel); 727 } else { 728 memcpy(ea.ether_addr_octet, bssid.i_bssid, 729 sizeof(ea.ether_addr_octet)); 730 printf("\tbssid %s", ether_ntoa(&ea)); 731 if (channel.i_channel != IEEE80211_CHAN_ANY) 732 printf(" chan %d", channel.i_channel); 733 printf("\n"); 734 } 735} 736 737static void 738scan_and_wait(prop_dictionary_t env) 739{ 740 int sroute; 741 742 sroute = prog_socket(PF_ROUTE, SOCK_RAW, 0); 743 if (sroute < 0) { 744 warn("socket(PF_ROUTE,SOCK_RAW)"); 745 return; 746 } 747 /* NB: only root can trigger a scan so ignore errors */ 748 if (set80211(env, IEEE80211_IOC_SCAN_REQ, 0, 0, NULL) >= 0) { 749 char buf[2048]; 750 struct if_announcemsghdr *ifan; 751 struct rt_msghdr *rtm; 752 753 do { 754 if (prog_read(sroute, buf, sizeof(buf)) < 0) { 755 warn("read(PF_ROUTE)"); 756 break; 757 } 758 rtm = (struct rt_msghdr *) buf; 759 if (rtm->rtm_version != RTM_VERSION) 760 break; 761 ifan = (struct if_announcemsghdr *) rtm; 762 } while (rtm->rtm_type != RTM_IEEE80211 || 763 ifan->ifan_what != RTM_IEEE80211_SCAN); 764 } 765 prog_close(sroute); 766} 767 768static int 769calc_len(const u_int8_t *cp, int len) 770{ 771 int maxlen = 0, curlen; 772 const struct ieee80211req_scan_result *sr; 773 char buf[IEEE80211_NWID_LEN]; 774 775 while (len >= (int)sizeof(*sr)) { 776 sr = (const struct ieee80211req_scan_result *)cp; 777 cp += sr->isr_len; 778 len -= sr->isr_len; 779 curlen = copy_essid(buf, sizeof(buf), 780 (const u_int8_t *)(sr + 1), sr->isr_ssid_len); 781 if (curlen >= IEEE80211_NWID_LEN) 782 return IEEE80211_NWID_LEN; 783 if (curlen > maxlen) 784 maxlen = curlen; 785 } 786 return maxlen; 787} 788 789static void 790list_scan(prop_dictionary_t env) 791{ 792 u_int8_t buf[64*1024 - 1]; 793 struct ieee80211req ireq; 794 char ssid[IEEE80211_NWID_LEN+1]; 795 const u_int8_t *cp; 796 int len, ssidmax; 797 const struct ieee80211req_scan_result *sr; 798 799 memset(&ireq, 0, sizeof(ireq)); 800 ireq.i_type = IEEE80211_IOC_SCAN_RESULTS; 801 ireq.i_data = buf; 802 ireq.i_len = sizeof(buf); 803 if (direct_ioctl(env, SIOCG80211, &ireq) < 0) 804 errx(EXIT_FAILURE, "unable to get scan results"); 805 len = ireq.i_len; 806 if (len < (int)sizeof(*sr)) 807 return; 808 809 ssidmax = calc_len(buf, len); 810 811 printf("%-*.*s %-17.17s %4s %4s %-7s %3s %4s\n" 812 , ssidmax, ssidmax, "SSID" 813 , "BSSID" 814 , "CHAN" 815 , "RATE" 816 , "S:N" 817 , "INT" 818 , "CAPS" 819 ); 820 cp = buf; 821 while (len >= (int)sizeof(*sr)) { 822 const uint8_t *vp; 823 824 sr = (const struct ieee80211req_scan_result *) cp; 825 vp = (const u_int8_t *)(sr+1); 826 (void)copy_essid(ssid, sizeof(ssid), vp, sr->isr_ssid_len); 827 printf("%-*.*s %s %3d %3dM %3d:%-3d %3d %-4.4s" 828 , ssidmax, ssidmax, ssid 829 , ether_ntoa((const struct ether_addr *) sr->isr_bssid) 830 , ieee80211_mhz2ieee(sr->isr_freq, sr->isr_flags) 831 , getmaxrate(sr->isr_rates, sr->isr_nrates) 832 , sr->isr_rssi, sr->isr_noise 833 , sr->isr_intval 834 , getcaps(sr->isr_capinfo) 835 ); 836 printies(vp + sr->isr_ssid_len, sr->isr_ie_len, 24); 837 printf("\n"); 838 cp += sr->isr_len, len -= sr->isr_len; 839 } 840} 841/* 842 * Convert MHz frequency to IEEE channel number. 843 */ 844static u_int 845ieee80211_mhz2ieee(u_int isrfreq, u_int isrflags) 846{ 847 if ((isrflags & IEEE80211_CHAN_GSM) || (907 <= isrfreq && isrfreq <= 922)) 848 return mapgsm(isrfreq, isrflags); 849 if (isrfreq == 2484) 850 return 14; 851 if (isrfreq < 2484) 852 return (isrfreq - 2407) / 5; 853 if (isrfreq < 5000) { 854 if (isrflags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) 855 return mappsb(isrfreq, isrflags); 856 else if (isrfreq > 4900) 857 return (isrfreq - 4000) / 5; 858 else 859 return 15 + ((isrfreq - 2512) / 20); 860 } 861 return (isrfreq - 5000) / 5; 862} 863 864static int 865getmaxrate(const u_int8_t rates[15], u_int8_t nrates) 866{ 867 int i, maxrate = -1; 868 869 for (i = 0; i < nrates; i++) { 870 int rate = rates[i] & IEEE80211_RATE_VAL; 871 if (rate > maxrate) 872 maxrate = rate; 873 } 874 return maxrate / 2; 875} 876 877static const char * 878getcaps(int capinfo) 879{ 880 static char capstring[32]; 881 char *cp = capstring; 882 883 if (capinfo & IEEE80211_CAPINFO_ESS) 884 *cp++ = 'E'; 885 if (capinfo & IEEE80211_CAPINFO_IBSS) 886 *cp++ = 'I'; 887 if (capinfo & IEEE80211_CAPINFO_CF_POLLABLE) 888 *cp++ = 'c'; 889 if (capinfo & IEEE80211_CAPINFO_CF_POLLREQ) 890 *cp++ = 'C'; 891 if (capinfo & IEEE80211_CAPINFO_PRIVACY) 892 *cp++ = 'P'; 893 if (capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) 894 *cp++ = 'S'; 895 if (capinfo & IEEE80211_CAPINFO_PBCC) 896 *cp++ = 'B'; 897 if (capinfo & IEEE80211_CAPINFO_CHNL_AGILITY) 898 *cp++ = 'A'; 899 if (capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) 900 *cp++ = 's'; 901 if (capinfo & IEEE80211_CAPINFO_RSN) 902 *cp++ = 'R'; 903 if (capinfo & IEEE80211_CAPINFO_DSSSOFDM) 904 *cp++ = 'D'; 905 *cp = '\0'; 906 return capstring; 907} 908 909static void 910printie(const char* tag, const uint8_t *ie, size_t ielen, int maxlen) 911{ 912 printf("%s", tag); 913 914 maxlen -= strlen(tag)+2; 915 if ((int)(2*ielen) > maxlen) 916 maxlen--; 917 printf("<"); 918 for (; ielen > 0; ie++, ielen--) { 919 if (maxlen-- <= 0) 920 break; 921 printf("%02x", *ie); 922 } 923 if (ielen != 0) 924 printf("-"); 925 printf(">"); 926} 927 928#define LE_READ_2(p) \ 929 ((u_int16_t) \ 930 ((((const u_int8_t *)(p))[0] ) | \ 931 (((const u_int8_t *)(p))[1] << 8))) 932#define LE_READ_4(p) \ 933 ((u_int32_t) \ 934 ((((const u_int8_t *)(p))[0] ) | \ 935 (((const u_int8_t *)(p))[1] << 8) | \ 936 (((const u_int8_t *)(p))[2] << 16) | \ 937 (((const u_int8_t *)(p))[3] << 24))) 938 939/* 940 * NB: The decoding routines assume a properly formatted ie 941 * which should be safe as the kernel only retains them 942 * if they parse ok. 943 */ 944 945static void 946printwmeparam(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 947{ 948#define MS(_v, _f) (((_v) & _f) >> _f##_S) 949 static const char *acnames[] = { "BE", "BK", "VO", "VI" }; 950 const struct ieee80211_wme_param *wme = 951 (const struct ieee80211_wme_param *) ie; 952 int i; 953 954 printf("%s", tag); 955 if (!vflag) 956 return; 957 printf("<qosinfo 0x%x", wme->param_qosInfo); 958 ie += offsetof(struct ieee80211_wme_param, params_acParams); 959 for (i = 0; i < WME_NUM_AC; i++) { 960 const struct ieee80211_wme_acparams *ac = 961 &wme->params_acParams[i]; 962 963 printf(" %s[%saifsn %u cwmin %u cwmax %u txop %u]" 964 , acnames[i] 965 , MS(ac->acp_aci_aifsn, WME_PARAM_ACM) ? "acm " : "" 966 , MS(ac->acp_aci_aifsn, WME_PARAM_AIFSN) 967 , MS(ac->acp_logcwminmax, WME_PARAM_LOGCWMIN) 968 , MS(ac->acp_logcwminmax, WME_PARAM_LOGCWMAX) 969 , LE_READ_2(&ac->acp_txop) 970 ); 971 } 972 printf(">"); 973#undef MS 974} 975 976static void 977printwmeinfo(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 978{ 979 printf("%s", tag); 980 if (vflag) { 981 const struct ieee80211_wme_info *wme = 982 (const struct ieee80211_wme_info *) ie; 983 printf("<version 0x%x info 0x%x>", 984 wme->wme_version, wme->wme_info); 985 } 986} 987 988static const char * 989wpa_cipher(const u_int8_t *sel) 990{ 991#define WPA_SEL(x) (((x)<<24)|WPA_OUI) 992 u_int32_t w = LE_READ_4(sel); 993 994 switch (w) { 995 case WPA_SEL(WPA_CSE_NULL): 996 return "NONE"; 997 case WPA_SEL(WPA_CSE_WEP40): 998 return "WEP40"; 999 case WPA_SEL(WPA_CSE_WEP104): 1000 return "WEP104"; 1001 case WPA_SEL(WPA_CSE_TKIP): 1002 return "TKIP"; 1003 case WPA_SEL(WPA_CSE_CCMP): 1004 return "AES-CCMP"; 1005 } 1006 return "?"; /* NB: so 1<< is discarded */ 1007#undef WPA_SEL 1008} 1009 1010static const char * 1011wpa_keymgmt(const u_int8_t *sel) 1012{ 1013#define WPA_SEL(x) (((x)<<24)|WPA_OUI) 1014 u_int32_t w = LE_READ_4(sel); 1015 1016 switch (w) { 1017 case WPA_SEL(WPA_ASE_8021X_UNSPEC): 1018 return "8021X-UNSPEC"; 1019 case WPA_SEL(WPA_ASE_8021X_PSK): 1020 return "8021X-PSK"; 1021 case WPA_SEL(WPA_ASE_NONE): 1022 return "NONE"; 1023 } 1024 return "?"; 1025#undef WPA_SEL 1026} 1027 1028static void 1029printwpaie(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 1030{ 1031 u_int8_t len = ie[1]; 1032 1033 printf("%s", tag); 1034 if (vflag) { 1035 const char *sep; 1036 int n; 1037 1038 ie += 6, len -= 4; /* NB: len is payload only */ 1039 1040 printf("<v%u", LE_READ_2(ie)); 1041 ie += 2, len -= 2; 1042 1043 printf(" mc:%s", wpa_cipher(ie)); 1044 ie += 4, len -= 4; 1045 1046 /* unicast ciphers */ 1047 n = LE_READ_2(ie); 1048 ie += 2, len -= 2; 1049 sep = " uc:"; 1050 for (; n > 0; n--) { 1051 printf("%s%s", sep, wpa_cipher(ie)); 1052 ie += 4, len -= 4; 1053 sep = "+"; 1054 } 1055 1056 /* key management algorithms */ 1057 n = LE_READ_2(ie); 1058 ie += 2, len -= 2; 1059 sep = " km:"; 1060 for (; n > 0; n--) { 1061 printf("%s%s", sep, wpa_keymgmt(ie)); 1062 ie += 4, len -= 4; 1063 sep = "+"; 1064 } 1065 1066 if (len > 2) /* optional capabilities */ 1067 printf(", caps 0x%x", LE_READ_2(ie)); 1068 printf(">"); 1069 } 1070} 1071 1072static const char * 1073rsn_cipher(const u_int8_t *sel) 1074{ 1075#define RSN_SEL(x) (((x)<<24)|RSN_OUI) 1076 u_int32_t w = LE_READ_4(sel); 1077 1078 switch (w) { 1079 case RSN_SEL(RSN_CSE_NULL): 1080 return "NONE"; 1081 case RSN_SEL(RSN_CSE_WEP40): 1082 return "WEP40"; 1083 case RSN_SEL(RSN_CSE_WEP104): 1084 return "WEP104"; 1085 case RSN_SEL(RSN_CSE_TKIP): 1086 return "TKIP"; 1087 case RSN_SEL(RSN_CSE_CCMP): 1088 return "AES-CCMP"; 1089 case RSN_SEL(RSN_CSE_WRAP): 1090 return "AES-OCB"; 1091 } 1092 return "?"; 1093#undef WPA_SEL 1094} 1095 1096static const char * 1097rsn_keymgmt(const u_int8_t *sel) 1098{ 1099#define RSN_SEL(x) (((x)<<24)|RSN_OUI) 1100 u_int32_t w = LE_READ_4(sel); 1101 1102 switch (w) { 1103 case RSN_SEL(RSN_ASE_8021X_UNSPEC): 1104 return "8021X-UNSPEC"; 1105 case RSN_SEL(RSN_ASE_8021X_PSK): 1106 return "8021X-PSK"; 1107 case RSN_SEL(RSN_ASE_NONE): 1108 return "NONE"; 1109 } 1110 return "?"; 1111#undef RSN_SEL 1112} 1113 1114static void 1115printrsnie(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 1116{ 1117 const char *sep; 1118 int n; 1119 1120 printf("%s", tag); 1121 if (!vflag) 1122 return; 1123 1124 ie += 2, ielen -= 2; 1125 1126 printf("<v%u", LE_READ_2(ie)); 1127 ie += 2, ielen -= 2; 1128 1129 printf(" mc:%s", rsn_cipher(ie)); 1130 ie += 4, ielen -= 4; 1131 1132 /* unicast ciphers */ 1133 n = LE_READ_2(ie); 1134 ie += 2, ielen -= 2; 1135 sep = " uc:"; 1136 for (; n > 0; n--) { 1137 printf("%s%s", sep, rsn_cipher(ie)); 1138 ie += 4, ielen -= 4; 1139 sep = "+"; 1140 } 1141 1142 /* key management algorithms */ 1143 n = LE_READ_2(ie); 1144 ie += 2, ielen -= 2; 1145 sep = " km:"; 1146 for (; n > 0; n--) { 1147 printf("%s%s", sep, rsn_keymgmt(ie)); 1148 ie += 4, ielen -= 4; 1149 sep = "+"; 1150 } 1151 1152 if (ielen > 2) /* optional capabilities */ 1153 printf(", caps 0x%x", LE_READ_2(ie)); 1154 /* XXXPMKID */ 1155 printf(">"); 1156} 1157 1158/* 1159 * Copy the ssid string contents into buf, truncating to fit. If the 1160 * ssid is entirely printable then just copy intact. Otherwise convert 1161 * to hexadecimal. If the result is truncated then replace the last 1162 * three characters with "...". 1163 */ 1164static int 1165copy_essid(char buf[], size_t bufsize, const u_int8_t *essid, size_t essid_len) 1166{ 1167 const u_int8_t *p; 1168 int printable; 1169 size_t maxlen, i; 1170 1171 if (essid_len + 1 > bufsize) 1172 maxlen = bufsize; 1173 else 1174 maxlen = essid_len + 1; 1175 /* determine printable or not */ 1176 printable = 1; 1177 for (i = 0, p = essid; i < essid_len; i++, p++) { 1178 if (*p < ' ' || *p > 0x7e) { 1179 printable = 0; 1180 break; 1181 } 1182 } 1183 if (!printable) { /* not printable, print as hex */ 1184 if (bufsize < 3) 1185 return 0; 1186 strlcpy(buf, "0x", bufsize); 1187 bufsize -= 2; 1188 p = essid; 1189 for (i = 0; i < maxlen && bufsize >= 2; i++) { 1190 sprintf(&buf[2+2*i], "%02x", p[i]); 1191 bufsize -= 2; 1192 } 1193 maxlen = i; 1194 } else { 1195 /* printable, truncate as needed */ 1196 strlcpy(buf, (const char *)essid, maxlen); 1197 } 1198 if (maxlen != essid_len + 1) 1199 memcpy(&buf[maxlen - 4], "...", 4); 1200 return (int)strlen(buf); 1201} 1202 1203static void 1204printssid(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 1205{ 1206 char ssid[2*IEEE80211_NWID_LEN+1]; 1207 1208 printf("%s<%.*s>", tag, copy_essid(ssid, maxlen, ie+2, ie[1]), ssid); 1209} 1210 1211static void 1212printrates(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 1213{ 1214 const char *sep; 1215 size_t i; 1216 1217 printf("%s", tag); 1218 sep = "<"; 1219 for (i = 2; i < ielen; i++) { 1220 printf("%s%s%d", sep, 1221 ie[i] & IEEE80211_RATE_BASIC ? "B" : "", 1222 ie[i] & IEEE80211_RATE_VAL); 1223 sep = ","; 1224 } 1225 printf(">"); 1226} 1227 1228static void 1229printcountry(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 1230{ 1231 const struct ieee80211_country_ie *cie = 1232 (const struct ieee80211_country_ie *) ie; 1233 int i, nbands, schan, nchan; 1234 1235 printf("%s<%c%c%c", tag, cie->cc[0], cie->cc[1], cie->cc[2]); 1236 nbands = (cie->len - 3) / sizeof(cie->band[0]); 1237 for (i = 0; i < nbands; i++) { 1238 schan = cie->band[i].schan; 1239 nchan = cie->band[i].nchan; 1240 if (nchan != 1) 1241 printf(" %u-%u,%u", schan, schan + nchan-1, 1242 cie->band[i].maxtxpwr); 1243 else 1244 printf(" %u,%u", schan, cie->band[i].maxtxpwr); 1245 } 1246 printf(">"); 1247} 1248 1249/* unaligned little endian access */ 1250#define LE_READ_4(p) \ 1251 ((u_int32_t) \ 1252 ((((const u_int8_t *)(p))[0] ) | \ 1253 (((const u_int8_t *)(p))[1] << 8) | \ 1254 (((const u_int8_t *)(p))[2] << 16) | \ 1255 (((const u_int8_t *)(p))[3] << 24))) 1256 1257static int 1258iswpaoui(const u_int8_t *frm) 1259{ 1260 return frm[1] > 3 && LE_READ_4(frm+2) == ((WPA_OUI_TYPE<<24)|WPA_OUI); 1261} 1262 1263static int 1264iswmeinfo(const u_int8_t *frm) 1265{ 1266 return frm[1] > 5 && LE_READ_4(frm+2) == ((WME_OUI_TYPE<<24)|WME_OUI) && 1267 frm[6] == WME_INFO_OUI_SUBTYPE; 1268} 1269 1270static int 1271iswmeparam(const u_int8_t *frm) 1272{ 1273 return frm[1] > 5 && LE_READ_4(frm+2) == ((WME_OUI_TYPE<<24)|WME_OUI) && 1274 frm[6] == WME_PARAM_OUI_SUBTYPE; 1275} 1276 1277static const char * 1278iename(int elemid) 1279{ 1280 switch (elemid) { 1281 case IEEE80211_ELEMID_FHPARMS: return " FHPARMS"; 1282 case IEEE80211_ELEMID_CFPARMS: return " CFPARMS"; 1283 case IEEE80211_ELEMID_TIM: return " TIM"; 1284 case IEEE80211_ELEMID_IBSSPARMS:return " IBSSPARMS"; 1285 case IEEE80211_ELEMID_CHALLENGE:return " CHALLENGE"; 1286 case IEEE80211_ELEMID_PWRCNSTR: return " PWRCNSTR"; 1287 case IEEE80211_ELEMID_PWRCAP: return " PWRCAP"; 1288 case IEEE80211_ELEMID_TPCREQ: return " TPCREQ"; 1289 case IEEE80211_ELEMID_TPCREP: return " TPCREP"; 1290 case IEEE80211_ELEMID_SUPPCHAN: return " SUPPCHAN"; 1291 case IEEE80211_ELEMID_CHANSWITCHANN:return " CSA"; 1292 case IEEE80211_ELEMID_MEASREQ: return " MEASREQ"; 1293 case IEEE80211_ELEMID_MEASREP: return " MEASREP"; 1294 case IEEE80211_ELEMID_QUIET: return " QUIET"; 1295 case IEEE80211_ELEMID_IBSSDFS: return " IBSSDFS"; 1296 case IEEE80211_ELEMID_TPC: return " TPC"; 1297 case IEEE80211_ELEMID_CCKM: return " CCKM"; 1298 } 1299 return " ???"; 1300} 1301 1302static void 1303printies(const u_int8_t *vp, int ielen, int maxcols) 1304{ 1305 while (ielen > 0) { 1306 switch (vp[0]) { 1307 case IEEE80211_ELEMID_SSID: 1308 if (vflag) 1309 printssid(" SSID", vp, 2+vp[1], maxcols); 1310 break; 1311 case IEEE80211_ELEMID_RATES: 1312 case IEEE80211_ELEMID_XRATES: 1313 if (vflag) 1314 printrates(vp[0] == IEEE80211_ELEMID_RATES ? 1315 " RATES" : " XRATES", vp, 2+vp[1], maxcols); 1316 break; 1317 case IEEE80211_ELEMID_DSPARMS: 1318 if (vflag) 1319 printf(" DSPARMS<%u>", vp[2]); 1320 break; 1321 case IEEE80211_ELEMID_COUNTRY: 1322 if (vflag) 1323 printcountry(" COUNTRY", vp, 2+vp[1], maxcols); 1324 break; 1325 case IEEE80211_ELEMID_ERP: 1326 if (vflag) 1327 printf(" ERP<0x%x>", vp[2]); 1328 break; 1329 case IEEE80211_ELEMID_VENDOR: 1330 if (iswpaoui(vp)) 1331 printwpaie(" WPA", vp, 2+vp[1], maxcols); 1332 else if (iswmeinfo(vp)) 1333 printwmeinfo(" WME", vp, 2+vp[1], maxcols); 1334 else if (iswmeparam(vp)) 1335 printwmeparam(" WME", vp, 2+vp[1], maxcols); 1336 else if (vflag) 1337 printie(" VEN", vp, 2+vp[1], maxcols); 1338 break; 1339 case IEEE80211_ELEMID_RSN: 1340 printrsnie(" RSN", vp, 2+vp[1], maxcols); 1341 break; 1342 default: 1343 if (vflag) 1344 printie(iename(vp[0]), vp, 2+vp[1], maxcols); 1345 break; 1346 } 1347 ielen -= 2+vp[1]; 1348 vp += 2+vp[1]; 1349 } 1350} 1351 1352static int 1353mapgsm(u_int isrfreq, u_int isrflags) 1354{ 1355 isrfreq *= 10; 1356 if (isrflags & IEEE80211_CHAN_QUARTER) 1357 isrfreq += 5; 1358 else if (isrflags & IEEE80211_CHAN_HALF) 1359 isrfreq += 10; 1360 else 1361 isrfreq += 20; 1362 /* NB: there is no 907/20 wide but leave room */ 1363 return (isrfreq - 906*10) / 5; 1364} 1365 1366static int 1367mappsb(u_int isrfreq, u_int isrflags) 1368{ 1369 return 37 + ((isrfreq * 10) + ((isrfreq % 5) == 2 ? 5 : 0) - 49400) / 5; 1370} 1371 1372static status_func_t status; 1373static usage_func_t usage; 1374static statistics_func_t statistics; 1375static cmdloop_branch_t branch[2]; 1376 1377static void 1378ieee80211_usage(prop_dictionary_t env) 1379{ 1380 fprintf(stderr, 1381 "\t[ nwid network_id ] [ nwkey network_key | -nwkey ]\n" 1382 "\t[ list scan ]\n" 1383 "\t[ powersave | -powersave ] [ powersavesleep duration ]\n" 1384 "\t[ hidessid | -hidessid ] [ apbridge | -apbridge ]\n"); 1385} 1386 1387static void 1388ieee80211_constructor(void) 1389{ 1390 cmdloop_branch_init(&branch[0], &ieee80211bool.pk_parser); 1391 cmdloop_branch_init(&branch[1], &kw80211.pk_parser); 1392 register_cmdloop_branch(&branch[0]); 1393 register_cmdloop_branch(&branch[1]); 1394 status_func_init(&status, ieee80211_status); 1395 statistics_func_init(&statistics, ieee80211_statistics); 1396 usage_func_init(&usage, ieee80211_usage); 1397 register_status(&status); 1398 register_statistics(&statistics); 1399 register_usage(&usage); 1400} 1401