1 /* $NetBSD: ieee80211.c,v 1.27 2014/01/08 01:56:20 christos 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 1.27 2014/01/08 01:56:20 christos 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 67 static void ieee80211_statistics(prop_dictionary_t); 68 static void ieee80211_status(prop_dictionary_t, prop_dictionary_t); 69 static void ieee80211_constructor(void) __attribute__((constructor)); 70 static int set80211(prop_dictionary_t env, uint16_t, int16_t, int16_t, 71 u_int8_t *); 72 static u_int ieee80211_mhz2ieee(u_int, u_int); 73 static int getmaxrate(const uint8_t [15], u_int8_t); 74 static const char * getcaps(int); 75 static void printie(const char*, const uint8_t *, size_t, int); 76 static int copy_essid(char [], size_t, const u_int8_t *, size_t); 77 static void scan_and_wait(prop_dictionary_t); 78 static void list_scan(prop_dictionary_t); 79 static int mappsb(u_int , u_int); 80 static int mapgsm(u_int , u_int); 81 82 static int sethidessid(prop_dictionary_t, prop_dictionary_t); 83 static int setapbridge(prop_dictionary_t, prop_dictionary_t); 84 static int setifssid(prop_dictionary_t, prop_dictionary_t); 85 static int setifnwkey(prop_dictionary_t, prop_dictionary_t); 86 static int unsetifnwkey(prop_dictionary_t, prop_dictionary_t); 87 static int unsetifbssid(prop_dictionary_t, prop_dictionary_t); 88 static int setifbssid(prop_dictionary_t, prop_dictionary_t); 89 static int setifchan(prop_dictionary_t, prop_dictionary_t); 90 static int setiffrag(prop_dictionary_t, prop_dictionary_t); 91 static int setifpowersave(prop_dictionary_t, prop_dictionary_t); 92 static int setifpowersavesleep(prop_dictionary_t, prop_dictionary_t); 93 static int setifrts(prop_dictionary_t, prop_dictionary_t); 94 static int scan_exec(prop_dictionary_t, prop_dictionary_t); 95 96 static void printies(const u_int8_t *, int, int); 97 static void printwmeparam(const char *, const u_int8_t *, size_t , int); 98 static void printwmeinfo(const char *, const u_int8_t *, size_t , int); 99 static const char * wpa_cipher(const u_int8_t *); 100 static const char * wpa_keymgmt(const u_int8_t *); 101 static void printwpaie(const char *, const u_int8_t *, size_t , int); 102 static const char * rsn_cipher(const u_int8_t *); 103 static const char * rsn_keymgmt(const u_int8_t *); 104 static void printrsnie(const char *, const u_int8_t *, size_t , int); 105 static void printssid(const char *, const u_int8_t *, size_t , int); 106 static void printrates(const char *, const u_int8_t *, size_t , int); 107 static void printcountry(const char *, const u_int8_t *, size_t , int); 108 static int iswpaoui(const u_int8_t *); 109 static int iswmeinfo(const u_int8_t *); 110 static int iswmeparam(const u_int8_t *); 111 static const char * iename(int); 112 113 extern struct pinteger parse_chan, parse_frag, parse_rts; 114 extern struct pstr parse_bssid, parse_ssid, parse_nwkey; 115 extern struct pinteger parse_powersavesleep; 116 117 static 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 }; 128 129 static const struct kwinst listskw[] = { 130 {.k_word = "scan", .k_exec = scan_exec} 131 }; 132 133 static struct pkw lists = PKW_INITIALIZER(&lists, "ieee80211 lists", NULL, 134 "list", listskw, __arraycount(listskw), &command_root.pb_parser); 135 136 static 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 }; 161 162 struct pkw kw80211 = PKW_INITIALIZER(&kw80211, "802.11 keywords", NULL, NULL, 163 kw80211kw, __arraycount(kw80211kw), NULL); 164 165 struct pkw ieee80211bool = PKW_INITIALIZER(&ieee80211bool, "ieee80211 boolean", 166 NULL, NULL, ieee80211boolkw, __arraycount(ieee80211boolkw), 167 &command_root.pb_parser); 168 169 struct pinteger parse_chan = PINTEGER_INITIALIZER1(&parse_chan, "chan", 170 0, UINT16_MAX, 10, setifchan, "chan", &command_root.pb_parser); 171 172 struct pinteger parse_rts = PINTEGER_INITIALIZER1(&parse_rts, "rts", 173 IEEE80211_RTS_MIN, IEEE80211_RTS_MAX, 10, 174 setifrts, "rts", &command_root.pb_parser); 175 176 struct pinteger parse_frag = PINTEGER_INITIALIZER1(&parse_frag, "frag", 177 IEEE80211_FRAG_MIN, IEEE80211_FRAG_MAX, 10, 178 setiffrag, "frag", &command_root.pb_parser); 179 180 struct pstr parse_ssid = PSTR_INITIALIZER(&parse_pass, "ssid", setifssid, 181 "ssid", &command_root.pb_parser); 182 183 struct pinteger parse_powersavesleep = 184 PINTEGER_INITIALIZER1(&parse_powersavesleep, "powersavesleep", 185 0, INT_MAX, 10, setifpowersavesleep, "powersavesleep", 186 &command_root.pb_parser); 187 188 struct pstr parse_nwkey = PSTR_INITIALIZER1(&parse_nwkey, "nwkey", setifnwkey, 189 "nwkey", false, &command_root.pb_parser); 190 191 struct pstr parse_bssid = PSTR_INITIALIZER1(&parse_bssid, "bssid", setifbssid, 192 "bssid", false, &command_root.pb_parser); 193 194 static int 195 set80211(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 } 211 212 static int 213 sethidessid(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 } 221 222 static int 223 setapbridge(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 } 231 232 static enum ieee80211_opmode 233 get80211opmode(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 } 249 250 static int 251 setifssid(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 } 265 266 static int 267 unsetifbssid(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 } 277 278 static int 279 setifbssid(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 } 300 301 static int 302 setifrts(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 } 313 314 static int 315 setiffrag(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 } 326 327 static int 328 setifchan(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 } 339 340 static int 341 setifnwkey(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 } 405 406 static int 407 unsetifnwkey(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 } 423 424 static int 425 setifpowersave(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 } 443 444 static int 445 setifpowersavesleep(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 } 462 463 static int 464 scan_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 } 481 482 static void 483 ieee80211_statistics(prop_dictionary_t env) 484 { 485 struct ieee80211_stats stats; 486 struct ifreq ifr; 487 488 memset(&ifr, 0, sizeof(ifr)); 489 ifr.ifr_buflen = sizeof(stats); 490 ifr.ifr_buf = (caddr_t)&stats; 491 if (direct_ioctl(env, (zflag) ? SIOCG80211ZSTATS : SIOCG80211STATS, 492 &ifr) == -1) 493 return; 494 #define STAT_PRINT(_member, _desc) \ 495 printf("\t" _desc ": %" PRIu32 "\n", stats._member) 496 497 STAT_PRINT(is_rx_badversion, "rx frame with bad version"); 498 STAT_PRINT(is_rx_tooshort, "rx frame too short"); 499 STAT_PRINT(is_rx_wrongbss, "rx from wrong bssid"); 500 STAT_PRINT(is_rx_dup, "rx discard 'cuz dup"); 501 STAT_PRINT(is_rx_wrongdir, "rx w/ wrong direction"); 502 STAT_PRINT(is_rx_mcastecho, "rx discard 'cuz mcast echo"); 503 STAT_PRINT(is_rx_notassoc, "rx discard 'cuz sta !assoc"); 504 STAT_PRINT(is_rx_noprivacy, "rx w/ wep but privacy off"); 505 STAT_PRINT(is_rx_unencrypted, "rx w/o wep and privacy on"); 506 STAT_PRINT(is_rx_wepfail, "rx wep processing failed"); 507 STAT_PRINT(is_rx_decap, "rx decapsulation failed"); 508 STAT_PRINT(is_rx_mgtdiscard, "rx discard mgt frames"); 509 STAT_PRINT(is_rx_ctl, "rx discard ctrl frames"); 510 STAT_PRINT(is_rx_beacon, "rx beacon frames"); 511 STAT_PRINT(is_rx_rstoobig, "rx rate set truncated"); 512 STAT_PRINT(is_rx_elem_missing, "rx required element missing"); 513 STAT_PRINT(is_rx_elem_toobig, "rx element too big"); 514 STAT_PRINT(is_rx_elem_toosmall, "rx element too small"); 515 STAT_PRINT(is_rx_elem_unknown, "rx element unknown"); 516 STAT_PRINT(is_rx_badchan, "rx frame w/ invalid chan"); 517 STAT_PRINT(is_rx_chanmismatch, "rx frame chan mismatch"); 518 STAT_PRINT(is_rx_nodealloc, "rx frame dropped"); 519 STAT_PRINT(is_rx_ssidmismatch, "rx frame ssid mismatch "); 520 STAT_PRINT(is_rx_auth_unsupported, "rx w/ unsupported auth alg"); 521 STAT_PRINT(is_rx_auth_fail, "rx sta auth failure"); 522 STAT_PRINT(is_rx_auth_countermeasures, "rx auth discard 'cuz CM"); 523 STAT_PRINT(is_rx_assoc_bss, "rx assoc from wrong bssid"); 524 STAT_PRINT(is_rx_assoc_notauth, "rx assoc w/o auth"); 525 STAT_PRINT(is_rx_assoc_capmismatch, "rx assoc w/ cap mismatch"); 526 STAT_PRINT(is_rx_assoc_norate, "rx assoc w/ no rate match"); 527 STAT_PRINT(is_rx_assoc_badwpaie, "rx assoc w/ bad WPA IE"); 528 STAT_PRINT(is_rx_deauth, "rx deauthentication"); 529 STAT_PRINT(is_rx_disassoc, "rx disassociation"); 530 STAT_PRINT(is_rx_badsubtype, "rx frame w/ unknown subtyp"); 531 STAT_PRINT(is_rx_nobuf, "rx failed for lack of buf"); 532 STAT_PRINT(is_rx_decryptcrc, "rx decrypt failed on crc"); 533 STAT_PRINT(is_rx_ahdemo_mgt, "rx discard ahdemo mgt fram"); 534 STAT_PRINT(is_rx_bad_auth, "rx bad auth request"); 535 STAT_PRINT(is_rx_unauth, "rx on unauthorized port"); 536 STAT_PRINT(is_rx_badkeyid, "rx w/ incorrect keyid"); 537 STAT_PRINT(is_rx_ccmpreplay, "rx seq# violation (CCMP)"); 538 STAT_PRINT(is_rx_ccmpformat, "rx format bad (CCMP)"); 539 STAT_PRINT(is_rx_ccmpmic, "rx MIC check failed (CCMP)"); 540 STAT_PRINT(is_rx_tkipreplay, "rx seq# violation (TKIP)"); 541 STAT_PRINT(is_rx_tkipformat, "rx format bad (TKIP)"); 542 STAT_PRINT(is_rx_tkipmic, "rx MIC check failed (TKIP)"); 543 STAT_PRINT(is_rx_tkipicv, "rx ICV check failed (TKIP)"); 544 STAT_PRINT(is_rx_badcipher, "rx failed 'cuz key type"); 545 STAT_PRINT(is_rx_nocipherctx, "rx failed 'cuz key !setup"); 546 STAT_PRINT(is_rx_acl, "rx discard 'cuz acl policy"); 547 548 STAT_PRINT(is_tx_nobuf, "tx failed for lack of buf"); 549 STAT_PRINT(is_tx_nonode, "tx failed for no node"); 550 STAT_PRINT(is_tx_unknownmgt, "tx of unknown mgt frame"); 551 STAT_PRINT(is_tx_badcipher, "tx failed 'cuz key type"); 552 STAT_PRINT(is_tx_nodefkey, "tx failed 'cuz no defkey"); 553 STAT_PRINT(is_tx_noheadroom, "tx failed 'cuz no space"); 554 STAT_PRINT(is_tx_fragframes, "tx frames fragmented"); 555 STAT_PRINT(is_tx_frags, "tx fragments created"); 556 557 STAT_PRINT(is_scan_active, "active scans started"); 558 STAT_PRINT(is_scan_passive, "passive scans started"); 559 STAT_PRINT(is_node_timeout, "nodes timed out inactivity"); 560 STAT_PRINT(is_crypto_nomem, "no memory for crypto ctx"); 561 STAT_PRINT(is_crypto_tkip, "tkip crypto done in s/w"); 562 STAT_PRINT(is_crypto_tkipenmic, "tkip en-MIC done in s/w"); 563 STAT_PRINT(is_crypto_tkipdemic, "tkip de-MIC done in s/w"); 564 STAT_PRINT(is_crypto_tkipcm, "tkip counter measures"); 565 STAT_PRINT(is_crypto_ccmp, "ccmp crypto done in s/w"); 566 STAT_PRINT(is_crypto_wep, "wep crypto done in s/w"); 567 STAT_PRINT(is_crypto_setkey_cipher, "cipher rejected key"); 568 STAT_PRINT(is_crypto_setkey_nokey, "no key index for setkey"); 569 STAT_PRINT(is_crypto_delkey, "driver key delete failed"); 570 STAT_PRINT(is_crypto_badcipher, "unknown cipher"); 571 STAT_PRINT(is_crypto_nocipher, "cipher not available"); 572 STAT_PRINT(is_crypto_attachfail, "cipher attach failed"); 573 STAT_PRINT(is_crypto_swfallback, "cipher fallback to s/w"); 574 STAT_PRINT(is_crypto_keyfail, "driver key alloc failed"); 575 STAT_PRINT(is_crypto_enmicfail, "en-MIC failed"); 576 STAT_PRINT(is_ibss_capmismatch, "merge failed-cap mismatch"); 577 STAT_PRINT(is_ibss_norate, "merge failed-rate mismatch"); 578 STAT_PRINT(is_ps_unassoc, "ps-poll for unassoc. sta"); 579 STAT_PRINT(is_ps_badaid, "ps-poll w/ incorrect aid"); 580 STAT_PRINT(is_ps_qempty, "ps-poll w/ nothing to send"); 581 STAT_PRINT(is_ff_badhdr, "fast frame rx'd w/ bad hdr"); 582 STAT_PRINT(is_ff_tooshort, "fast frame rx decap error"); 583 STAT_PRINT(is_ff_split, "fast frame rx split error"); 584 STAT_PRINT(is_ff_decap, "fast frames decap'd"); 585 STAT_PRINT(is_ff_encap, "fast frames encap'd for tx"); 586 STAT_PRINT(is_rx_badbintval, "rx frame w/ bogus bintval"); 587 } 588 589 static void 590 ieee80211_status(prop_dictionary_t env, prop_dictionary_t oenv) 591 { 592 int i, nwkey_verbose; 593 struct ieee80211_nwid nwid; 594 struct ieee80211_nwkey nwkey; 595 struct ieee80211_power power; 596 u_int8_t keybuf[IEEE80211_WEP_NKID][16]; 597 struct ieee80211_bssid bssid; 598 struct ieee80211chanreq channel; 599 struct ieee80211req ireq; 600 struct ether_addr ea; 601 static const u_int8_t zero_macaddr[IEEE80211_ADDR_LEN]; 602 enum ieee80211_opmode opmode = get80211opmode(env); 603 604 memset(&bssid, 0, sizeof(bssid)); 605 memset(&nwkey, 0, sizeof(nwkey)); 606 memset(&nwid, 0, sizeof(nwid)); 607 memset(&nwid, 0, sizeof(nwid)); 608 609 if (indirect_ioctl(env, SIOCG80211NWID, &nwid) == -1) 610 return; 611 if (nwid.i_len > IEEE80211_NWID_LEN) { 612 errx(EXIT_FAILURE, "SIOCG80211NWID: wrong length of nwid (%d)", nwid.i_len); 613 } 614 printf("\tssid "); 615 print_string(nwid.i_nwid, nwid.i_len); 616 617 if (opmode == IEEE80211_M_HOSTAP) { 618 ireq.i_type = IEEE80211_IOC_HIDESSID; 619 if (direct_ioctl(env, SIOCG80211, &ireq) != -1) { 620 if (ireq.i_val) 621 printf(" [hidden]"); 622 else if (vflag) 623 printf(" [shown]"); 624 } 625 626 ireq.i_type = IEEE80211_IOC_APBRIDGE; 627 if (direct_ioctl(env, SIOCG80211, &ireq) != -1) { 628 if (ireq.i_val) 629 printf(" apbridge"); 630 else if (vflag) 631 printf(" -apbridge"); 632 } 633 } 634 635 ireq.i_type = IEEE80211_IOC_RTSTHRESHOLD; 636 if (direct_ioctl(env, SIOCG80211, &ireq) == -1) 637 ; 638 else if (ireq.i_val < IEEE80211_RTS_MAX) 639 printf(" rts %d", ireq.i_val); 640 else if (vflag) 641 printf(" -rts"); 642 643 ireq.i_type = IEEE80211_IOC_FRAGTHRESHOLD; 644 if (direct_ioctl(env, SIOCG80211, &ireq) == -1) 645 ; 646 else if (ireq.i_val < IEEE80211_FRAG_MAX) 647 printf(" frag %d", ireq.i_val); 648 else if (vflag) 649 printf(" -frag"); 650 651 memset(&nwkey, 0, sizeof(nwkey)); 652 /* show nwkey only when WEP is enabled */ 653 if (direct_ioctl(env, SIOCG80211NWKEY, &nwkey) == -1 || 654 nwkey.i_wepon == 0) { 655 printf("\n"); 656 goto skip_wep; 657 } 658 659 printf(" nwkey "); 660 /* try to retrieve WEP keys */ 661 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 662 nwkey.i_key[i].i_keydat = keybuf[i]; 663 nwkey.i_key[i].i_keylen = sizeof(keybuf[i]); 664 } 665 if (direct_ioctl(env, SIOCG80211NWKEY, &nwkey) == -1) { 666 printf("*****"); 667 } else { 668 nwkey_verbose = 0; 669 /* check to see non default key or multiple keys defined */ 670 if (nwkey.i_defkid != 1) { 671 nwkey_verbose = 1; 672 } else { 673 for (i = 1; i < IEEE80211_WEP_NKID; i++) { 674 if (nwkey.i_key[i].i_keylen != 0) { 675 nwkey_verbose = 1; 676 break; 677 } 678 } 679 } 680 /* check extra ambiguity with keywords */ 681 if (!nwkey_verbose) { 682 if (nwkey.i_key[0].i_keylen >= 2 && 683 isdigit(nwkey.i_key[0].i_keydat[0]) && 684 nwkey.i_key[0].i_keydat[1] == ':') 685 nwkey_verbose = 1; 686 else if (nwkey.i_key[0].i_keylen >= 7 && 687 strncasecmp("persist", 688 (const char *)nwkey.i_key[0].i_keydat, 7) == 0) 689 nwkey_verbose = 1; 690 } 691 if (nwkey_verbose) 692 printf("%d:", nwkey.i_defkid); 693 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 694 if (i > 0) 695 printf(","); 696 if (nwkey.i_key[i].i_keylen < 0) 697 printf("persist"); 698 else 699 print_string(nwkey.i_key[i].i_keydat, 700 nwkey.i_key[i].i_keylen); 701 if (!nwkey_verbose) 702 break; 703 } 704 } 705 printf("\n"); 706 707 skip_wep: 708 if (direct_ioctl(env, SIOCG80211POWER, &power) == -1) 709 goto skip_power; 710 printf("\tpowersave "); 711 if (power.i_enabled) 712 printf("on (%dms sleep)", power.i_maxsleep); 713 else 714 printf("off"); 715 printf("\n"); 716 717 skip_power: 718 if (direct_ioctl(env, SIOCG80211BSSID, &bssid) == -1) 719 return; 720 if (direct_ioctl(env, SIOCG80211CHANNEL, &channel) == -1) 721 return; 722 if (memcmp(bssid.i_bssid, zero_macaddr, IEEE80211_ADDR_LEN) == 0) { 723 if (channel.i_channel != (u_int16_t)-1) 724 printf("\tchan %d\n", channel.i_channel); 725 } else { 726 memcpy(ea.ether_addr_octet, bssid.i_bssid, 727 sizeof(ea.ether_addr_octet)); 728 printf("\tbssid %s", ether_ntoa(&ea)); 729 if (channel.i_channel != IEEE80211_CHAN_ANY) 730 printf(" chan %d", channel.i_channel); 731 printf("\n"); 732 } 733 } 734 735 static void 736 scan_and_wait(prop_dictionary_t env) 737 { 738 int sroute; 739 740 sroute = prog_socket(PF_ROUTE, SOCK_RAW, 0); 741 if (sroute < 0) { 742 warn("socket(PF_ROUTE,SOCK_RAW)"); 743 return; 744 } 745 /* NB: only root can trigger a scan so ignore errors */ 746 if (set80211(env, IEEE80211_IOC_SCAN_REQ, 0, 0, NULL) >= 0) { 747 char buf[2048]; 748 struct if_announcemsghdr *ifan; 749 struct rt_msghdr *rtm; 750 751 do { 752 if (prog_read(sroute, buf, sizeof(buf)) < 0) { 753 warn("read(PF_ROUTE)"); 754 break; 755 } 756 rtm = (struct rt_msghdr *) buf; 757 if (rtm->rtm_version != RTM_VERSION) 758 break; 759 ifan = (struct if_announcemsghdr *) rtm; 760 } while (rtm->rtm_type != RTM_IEEE80211 || 761 ifan->ifan_what != RTM_IEEE80211_SCAN); 762 } 763 prog_close(sroute); 764 } 765 766 static void 767 list_scan(prop_dictionary_t env) 768 { 769 u_int8_t buf[24*1024]; 770 struct ieee80211req ireq; 771 char ssid[IEEE80211_NWID_LEN+1]; 772 const u_int8_t *cp; 773 int len, ssidmax; 774 775 memset(&ireq, 0, sizeof(ireq)); 776 ireq.i_type = IEEE80211_IOC_SCAN_RESULTS; 777 ireq.i_data = buf; 778 ireq.i_len = sizeof(buf); 779 if (direct_ioctl(env, SIOCG80211, &ireq) < 0) 780 errx(EXIT_FAILURE, "unable to get scan results"); 781 len = ireq.i_len; 782 if (len < (int)sizeof(struct ieee80211req_scan_result)) 783 return; 784 785 ssidmax = IEEE80211_NWID_LEN; 786 printf("%-*.*s %-17.17s %4s %4s %-7s %3s %4s\n" 787 , ssidmax, ssidmax, "SSID" 788 , "BSSID" 789 , "CHAN" 790 , "RATE" 791 , "S:N" 792 , "INT" 793 , "CAPS" 794 ); 795 cp = buf; 796 do { 797 const struct ieee80211req_scan_result *sr; 798 const uint8_t *vp; 799 800 sr = (const struct ieee80211req_scan_result *) cp; 801 vp = (const u_int8_t *)(sr+1); 802 printf("%-*.*s %s %3d %3dM %3d:%-3d %3d %-4.4s" 803 , ssidmax 804 , copy_essid(ssid, ssidmax, vp, sr->isr_ssid_len) 805 , ssid 806 , ether_ntoa((const struct ether_addr *) sr->isr_bssid) 807 , ieee80211_mhz2ieee(sr->isr_freq, sr->isr_flags) 808 , getmaxrate(sr->isr_rates, sr->isr_nrates) 809 , sr->isr_rssi, sr->isr_noise 810 , sr->isr_intval 811 , getcaps(sr->isr_capinfo) 812 ); 813 printies(vp + sr->isr_ssid_len, sr->isr_ie_len, 24); 814 printf("\n"); 815 cp += sr->isr_len, len -= sr->isr_len; 816 } while (len >= (int)sizeof(struct ieee80211req_scan_result)); 817 } 818 /* 819 * Convert MHz frequency to IEEE channel number. 820 */ 821 static u_int 822 ieee80211_mhz2ieee(u_int isrfreq, u_int isrflags) 823 { 824 if ((isrflags & IEEE80211_CHAN_GSM) || (907 <= isrfreq && isrfreq <= 922)) 825 return mapgsm(isrfreq, isrflags); 826 if (isrfreq == 2484) 827 return 14; 828 if (isrfreq < 2484) 829 return (isrfreq - 2407) / 5; 830 if (isrfreq < 5000) { 831 if (isrflags & (IEEE80211_CHAN_HALF|IEEE80211_CHAN_QUARTER)) 832 return mappsb(isrfreq, isrflags); 833 else if (isrfreq > 4900) 834 return (isrfreq - 4000) / 5; 835 else 836 return 15 + ((isrfreq - 2512) / 20); 837 } 838 return (isrfreq - 5000) / 5; 839 } 840 841 static int 842 getmaxrate(const u_int8_t rates[15], u_int8_t nrates) 843 { 844 int i, maxrate = -1; 845 846 for (i = 0; i < nrates; i++) { 847 int rate = rates[i] & IEEE80211_RATE_VAL; 848 if (rate > maxrate) 849 maxrate = rate; 850 } 851 return maxrate / 2; 852 } 853 854 static const char * 855 getcaps(int capinfo) 856 { 857 static char capstring[32]; 858 char *cp = capstring; 859 860 if (capinfo & IEEE80211_CAPINFO_ESS) 861 *cp++ = 'E'; 862 if (capinfo & IEEE80211_CAPINFO_IBSS) 863 *cp++ = 'I'; 864 if (capinfo & IEEE80211_CAPINFO_CF_POLLABLE) 865 *cp++ = 'c'; 866 if (capinfo & IEEE80211_CAPINFO_CF_POLLREQ) 867 *cp++ = 'C'; 868 if (capinfo & IEEE80211_CAPINFO_PRIVACY) 869 *cp++ = 'P'; 870 if (capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) 871 *cp++ = 'S'; 872 if (capinfo & IEEE80211_CAPINFO_PBCC) 873 *cp++ = 'B'; 874 if (capinfo & IEEE80211_CAPINFO_CHNL_AGILITY) 875 *cp++ = 'A'; 876 if (capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) 877 *cp++ = 's'; 878 if (capinfo & IEEE80211_CAPINFO_RSN) 879 *cp++ = 'R'; 880 if (capinfo & IEEE80211_CAPINFO_DSSSOFDM) 881 *cp++ = 'D'; 882 *cp = '\0'; 883 return capstring; 884 } 885 886 static void 887 printie(const char* tag, const uint8_t *ie, size_t ielen, int maxlen) 888 { 889 printf("%s", tag); 890 891 maxlen -= strlen(tag)+2; 892 if ((int)(2*ielen) > maxlen) 893 maxlen--; 894 printf("<"); 895 for (; ielen > 0; ie++, ielen--) { 896 if (maxlen-- <= 0) 897 break; 898 printf("%02x", *ie); 899 } 900 if (ielen != 0) 901 printf("-"); 902 printf(">"); 903 } 904 905 #define LE_READ_2(p) \ 906 ((u_int16_t) \ 907 ((((const u_int8_t *)(p))[0] ) | \ 908 (((const u_int8_t *)(p))[1] << 8))) 909 #define LE_READ_4(p) \ 910 ((u_int32_t) \ 911 ((((const u_int8_t *)(p))[0] ) | \ 912 (((const u_int8_t *)(p))[1] << 8) | \ 913 (((const u_int8_t *)(p))[2] << 16) | \ 914 (((const u_int8_t *)(p))[3] << 24))) 915 916 /* 917 * NB: The decoding routines assume a properly formatted ie 918 * which should be safe as the kernel only retains them 919 * if they parse ok. 920 */ 921 922 static void 923 printwmeparam(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 924 { 925 #define MS(_v, _f) (((_v) & _f) >> _f##_S) 926 static const char *acnames[] = { "BE", "BK", "VO", "VI" }; 927 const struct ieee80211_wme_param *wme = 928 (const struct ieee80211_wme_param *) ie; 929 int i; 930 931 printf("%s", tag); 932 if (!vflag) 933 return; 934 printf("<qosinfo 0x%x", wme->param_qosInfo); 935 ie += offsetof(struct ieee80211_wme_param, params_acParams); 936 for (i = 0; i < WME_NUM_AC; i++) { 937 const struct ieee80211_wme_acparams *ac = 938 &wme->params_acParams[i]; 939 940 printf(" %s[%saifsn %u cwmin %u cwmax %u txop %u]" 941 , acnames[i] 942 , MS(ac->acp_aci_aifsn, WME_PARAM_ACM) ? "acm " : "" 943 , MS(ac->acp_aci_aifsn, WME_PARAM_AIFSN) 944 , MS(ac->acp_logcwminmax, WME_PARAM_LOGCWMIN) 945 , MS(ac->acp_logcwminmax, WME_PARAM_LOGCWMAX) 946 , LE_READ_2(&ac->acp_txop) 947 ); 948 } 949 printf(">"); 950 #undef MS 951 } 952 953 static void 954 printwmeinfo(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 955 { 956 printf("%s", tag); 957 if (vflag) { 958 const struct ieee80211_wme_info *wme = 959 (const struct ieee80211_wme_info *) ie; 960 printf("<version 0x%x info 0x%x>", 961 wme->wme_version, wme->wme_info); 962 } 963 } 964 965 static const char * 966 wpa_cipher(const u_int8_t *sel) 967 { 968 #define WPA_SEL(x) (((x)<<24)|WPA_OUI) 969 u_int32_t w = LE_READ_4(sel); 970 971 switch (w) { 972 case WPA_SEL(WPA_CSE_NULL): 973 return "NONE"; 974 case WPA_SEL(WPA_CSE_WEP40): 975 return "WEP40"; 976 case WPA_SEL(WPA_CSE_WEP104): 977 return "WEP104"; 978 case WPA_SEL(WPA_CSE_TKIP): 979 return "TKIP"; 980 case WPA_SEL(WPA_CSE_CCMP): 981 return "AES-CCMP"; 982 } 983 return "?"; /* NB: so 1<< is discarded */ 984 #undef WPA_SEL 985 } 986 987 static const char * 988 wpa_keymgmt(const u_int8_t *sel) 989 { 990 #define WPA_SEL(x) (((x)<<24)|WPA_OUI) 991 u_int32_t w = LE_READ_4(sel); 992 993 switch (w) { 994 case WPA_SEL(WPA_ASE_8021X_UNSPEC): 995 return "8021X-UNSPEC"; 996 case WPA_SEL(WPA_ASE_8021X_PSK): 997 return "8021X-PSK"; 998 case WPA_SEL(WPA_ASE_NONE): 999 return "NONE"; 1000 } 1001 return "?"; 1002 #undef WPA_SEL 1003 } 1004 1005 static void 1006 printwpaie(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 1007 { 1008 u_int8_t len = ie[1]; 1009 1010 printf("%s", tag); 1011 if (vflag) { 1012 const char *sep; 1013 int n; 1014 1015 ie += 6, len -= 4; /* NB: len is payload only */ 1016 1017 printf("<v%u", LE_READ_2(ie)); 1018 ie += 2, len -= 2; 1019 1020 printf(" mc:%s", wpa_cipher(ie)); 1021 ie += 4, len -= 4; 1022 1023 /* unicast ciphers */ 1024 n = LE_READ_2(ie); 1025 ie += 2, len -= 2; 1026 sep = " uc:"; 1027 for (; n > 0; n--) { 1028 printf("%s%s", sep, wpa_cipher(ie)); 1029 ie += 4, len -= 4; 1030 sep = "+"; 1031 } 1032 1033 /* key management algorithms */ 1034 n = LE_READ_2(ie); 1035 ie += 2, len -= 2; 1036 sep = " km:"; 1037 for (; n > 0; n--) { 1038 printf("%s%s", sep, wpa_keymgmt(ie)); 1039 ie += 4, len -= 4; 1040 sep = "+"; 1041 } 1042 1043 if (len > 2) /* optional capabilities */ 1044 printf(", caps 0x%x", LE_READ_2(ie)); 1045 printf(">"); 1046 } 1047 } 1048 1049 static const char * 1050 rsn_cipher(const u_int8_t *sel) 1051 { 1052 #define RSN_SEL(x) (((x)<<24)|RSN_OUI) 1053 u_int32_t w = LE_READ_4(sel); 1054 1055 switch (w) { 1056 case RSN_SEL(RSN_CSE_NULL): 1057 return "NONE"; 1058 case RSN_SEL(RSN_CSE_WEP40): 1059 return "WEP40"; 1060 case RSN_SEL(RSN_CSE_WEP104): 1061 return "WEP104"; 1062 case RSN_SEL(RSN_CSE_TKIP): 1063 return "TKIP"; 1064 case RSN_SEL(RSN_CSE_CCMP): 1065 return "AES-CCMP"; 1066 case RSN_SEL(RSN_CSE_WRAP): 1067 return "AES-OCB"; 1068 } 1069 return "?"; 1070 #undef WPA_SEL 1071 } 1072 1073 static const char * 1074 rsn_keymgmt(const u_int8_t *sel) 1075 { 1076 #define RSN_SEL(x) (((x)<<24)|RSN_OUI) 1077 u_int32_t w = LE_READ_4(sel); 1078 1079 switch (w) { 1080 case RSN_SEL(RSN_ASE_8021X_UNSPEC): 1081 return "8021X-UNSPEC"; 1082 case RSN_SEL(RSN_ASE_8021X_PSK): 1083 return "8021X-PSK"; 1084 case RSN_SEL(RSN_ASE_NONE): 1085 return "NONE"; 1086 } 1087 return "?"; 1088 #undef RSN_SEL 1089 } 1090 1091 static void 1092 printrsnie(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 1093 { 1094 const char *sep; 1095 int n; 1096 1097 printf("%s", tag); 1098 if (!vflag) 1099 return; 1100 1101 ie += 2, ielen -= 2; 1102 1103 printf("<v%u", LE_READ_2(ie)); 1104 ie += 2, ielen -= 2; 1105 1106 printf(" mc:%s", rsn_cipher(ie)); 1107 ie += 4, ielen -= 4; 1108 1109 /* unicast ciphers */ 1110 n = LE_READ_2(ie); 1111 ie += 2, ielen -= 2; 1112 sep = " uc:"; 1113 for (; n > 0; n--) { 1114 printf("%s%s", sep, rsn_cipher(ie)); 1115 ie += 4, ielen -= 4; 1116 sep = "+"; 1117 } 1118 1119 /* key management algorithms */ 1120 n = LE_READ_2(ie); 1121 ie += 2, ielen -= 2; 1122 sep = " km:"; 1123 for (; n > 0; n--) { 1124 printf("%s%s", sep, rsn_keymgmt(ie)); 1125 ie += 4, ielen -= 4; 1126 sep = "+"; 1127 } 1128 1129 if (ielen > 2) /* optional capabilities */ 1130 printf(", caps 0x%x", LE_READ_2(ie)); 1131 /* XXXPMKID */ 1132 printf(">"); 1133 } 1134 1135 /* 1136 * Copy the ssid string contents into buf, truncating to fit. If the 1137 * ssid is entirely printable then just copy intact. Otherwise convert 1138 * to hexadecimal. If the result is truncated then replace the last 1139 * three characters with "...". 1140 */ 1141 static int 1142 copy_essid(char buf[], size_t bufsize, const u_int8_t *essid, size_t essid_len) 1143 { 1144 const u_int8_t *p; 1145 size_t maxlen, i; 1146 1147 if (essid_len > bufsize) 1148 maxlen = bufsize; 1149 else 1150 maxlen = essid_len; 1151 /* determine printable or not */ 1152 for (i = 0, p = essid; i < maxlen; i++, p++) { 1153 if (*p < ' ' || *p > 0x7e) 1154 break; 1155 } 1156 if (i != maxlen) { /* not printable, print as hex */ 1157 if (bufsize < 3) 1158 return 0; 1159 strlcpy(buf, "0x", bufsize); 1160 bufsize -= 2; 1161 p = essid; 1162 for (i = 0; i < maxlen && bufsize >= 2; i++) { 1163 sprintf(&buf[2+2*i], "%02x", p[i]); 1164 bufsize -= 2; 1165 } 1166 if (i != essid_len) 1167 memcpy(&buf[2+2*i-3], "...", 3); 1168 } else { /* printable, truncate as needed */ 1169 memcpy(buf, essid, maxlen); 1170 if (maxlen != essid_len) 1171 memcpy(&buf[maxlen-3], "...", 3); 1172 } 1173 return maxlen; 1174 } 1175 1176 static void 1177 printssid(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 1178 { 1179 char ssid[2*IEEE80211_NWID_LEN+1]; 1180 1181 printf("%s<%.*s>", tag, copy_essid(ssid, maxlen, ie+2, ie[1]), ssid); 1182 } 1183 1184 static void 1185 printrates(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 1186 { 1187 const char *sep; 1188 size_t i; 1189 1190 printf("%s", tag); 1191 sep = "<"; 1192 for (i = 2; i < ielen; i++) { 1193 printf("%s%s%d", sep, 1194 ie[i] & IEEE80211_RATE_BASIC ? "B" : "", 1195 ie[i] & IEEE80211_RATE_VAL); 1196 sep = ","; 1197 } 1198 printf(">"); 1199 } 1200 1201 static void 1202 printcountry(const char *tag, const u_int8_t *ie, size_t ielen, int maxlen) 1203 { 1204 const struct ieee80211_country_ie *cie = 1205 (const struct ieee80211_country_ie *) ie; 1206 int i, nbands, schan, nchan; 1207 1208 printf("%s<%c%c%c", tag, cie->cc[0], cie->cc[1], cie->cc[2]); 1209 nbands = (cie->len - 3) / sizeof(cie->band[0]); 1210 for (i = 0; i < nbands; i++) { 1211 schan = cie->band[i].schan; 1212 nchan = cie->band[i].nchan; 1213 if (nchan != 1) 1214 printf(" %u-%u,%u", schan, schan + nchan-1, 1215 cie->band[i].maxtxpwr); 1216 else 1217 printf(" %u,%u", schan, cie->band[i].maxtxpwr); 1218 } 1219 printf(">"); 1220 } 1221 1222 /* unaligned little endian access */ 1223 #define LE_READ_4(p) \ 1224 ((u_int32_t) \ 1225 ((((const u_int8_t *)(p))[0] ) | \ 1226 (((const u_int8_t *)(p))[1] << 8) | \ 1227 (((const u_int8_t *)(p))[2] << 16) | \ 1228 (((const u_int8_t *)(p))[3] << 24))) 1229 1230 static int 1231 iswpaoui(const u_int8_t *frm) 1232 { 1233 return frm[1] > 3 && LE_READ_4(frm+2) == ((WPA_OUI_TYPE<<24)|WPA_OUI); 1234 } 1235 1236 static int 1237 iswmeinfo(const u_int8_t *frm) 1238 { 1239 return frm[1] > 5 && LE_READ_4(frm+2) == ((WME_OUI_TYPE<<24)|WME_OUI) && 1240 frm[6] == WME_INFO_OUI_SUBTYPE; 1241 } 1242 1243 static int 1244 iswmeparam(const u_int8_t *frm) 1245 { 1246 return frm[1] > 5 && LE_READ_4(frm+2) == ((WME_OUI_TYPE<<24)|WME_OUI) && 1247 frm[6] == WME_PARAM_OUI_SUBTYPE; 1248 } 1249 1250 static const char * 1251 iename(int elemid) 1252 { 1253 switch (elemid) { 1254 case IEEE80211_ELEMID_FHPARMS: return " FHPARMS"; 1255 case IEEE80211_ELEMID_CFPARMS: return " CFPARMS"; 1256 case IEEE80211_ELEMID_TIM: return " TIM"; 1257 case IEEE80211_ELEMID_IBSSPARMS:return " IBSSPARMS"; 1258 case IEEE80211_ELEMID_CHALLENGE:return " CHALLENGE"; 1259 case IEEE80211_ELEMID_PWRCNSTR: return " PWRCNSTR"; 1260 case IEEE80211_ELEMID_PWRCAP: return " PWRCAP"; 1261 case IEEE80211_ELEMID_TPCREQ: return " TPCREQ"; 1262 case IEEE80211_ELEMID_TPCREP: return " TPCREP"; 1263 case IEEE80211_ELEMID_SUPPCHAN: return " SUPPCHAN"; 1264 case IEEE80211_ELEMID_CHANSWITCHANN:return " CSA"; 1265 case IEEE80211_ELEMID_MEASREQ: return " MEASREQ"; 1266 case IEEE80211_ELEMID_MEASREP: return " MEASREP"; 1267 case IEEE80211_ELEMID_QUIET: return " QUIET"; 1268 case IEEE80211_ELEMID_IBSSDFS: return " IBSSDFS"; 1269 case IEEE80211_ELEMID_TPC: return " TPC"; 1270 case IEEE80211_ELEMID_CCKM: return " CCKM"; 1271 } 1272 return " ???"; 1273 } 1274 1275 static void 1276 printies(const u_int8_t *vp, int ielen, int maxcols) 1277 { 1278 while (ielen > 0) { 1279 switch (vp[0]) { 1280 case IEEE80211_ELEMID_SSID: 1281 if (vflag) 1282 printssid(" SSID", vp, 2+vp[1], maxcols); 1283 break; 1284 case IEEE80211_ELEMID_RATES: 1285 case IEEE80211_ELEMID_XRATES: 1286 if (vflag) 1287 printrates(vp[0] == IEEE80211_ELEMID_RATES ? 1288 " RATES" : " XRATES", vp, 2+vp[1], maxcols); 1289 break; 1290 case IEEE80211_ELEMID_DSPARMS: 1291 if (vflag) 1292 printf(" DSPARMS<%u>", vp[2]); 1293 break; 1294 case IEEE80211_ELEMID_COUNTRY: 1295 if (vflag) 1296 printcountry(" COUNTRY", vp, 2+vp[1], maxcols); 1297 break; 1298 case IEEE80211_ELEMID_ERP: 1299 if (vflag) 1300 printf(" ERP<0x%x>", vp[2]); 1301 break; 1302 case IEEE80211_ELEMID_VENDOR: 1303 if (iswpaoui(vp)) 1304 printwpaie(" WPA", vp, 2+vp[1], maxcols); 1305 else if (iswmeinfo(vp)) 1306 printwmeinfo(" WME", vp, 2+vp[1], maxcols); 1307 else if (iswmeparam(vp)) 1308 printwmeparam(" WME", vp, 2+vp[1], maxcols); 1309 else if (vflag) 1310 printie(" VEN", vp, 2+vp[1], maxcols); 1311 break; 1312 case IEEE80211_ELEMID_RSN: 1313 printrsnie(" RSN", vp, 2+vp[1], maxcols); 1314 break; 1315 default: 1316 if (vflag) 1317 printie(iename(vp[0]), vp, 2+vp[1], maxcols); 1318 break; 1319 } 1320 ielen -= 2+vp[1]; 1321 vp += 2+vp[1]; 1322 } 1323 } 1324 1325 static int 1326 mapgsm(u_int isrfreq, u_int isrflags) 1327 { 1328 isrfreq *= 10; 1329 if (isrflags & IEEE80211_CHAN_QUARTER) 1330 isrfreq += 5; 1331 else if (isrflags & IEEE80211_CHAN_HALF) 1332 isrfreq += 10; 1333 else 1334 isrfreq += 20; 1335 /* NB: there is no 907/20 wide but leave room */ 1336 return (isrfreq - 906*10) / 5; 1337 } 1338 1339 static int 1340 mappsb(u_int isrfreq, u_int isrflags) 1341 { 1342 return 37 + ((isrfreq * 10) + ((isrfreq % 5) == 2 ? 5 : 0) - 49400) / 5; 1343 } 1344 1345 static status_func_t status; 1346 static usage_func_t usage; 1347 static statistics_func_t statistics; 1348 static cmdloop_branch_t branch[2]; 1349 1350 static void 1351 ieee80211_usage(prop_dictionary_t env) 1352 { 1353 fprintf(stderr, 1354 "\t[ nwid network_id ] [ nwkey network_key | -nwkey ]\n" 1355 "\t[ list scan ]\n" 1356 "\t[ powersave | -powersave ] [ powersavesleep duration ]\n" 1357 "\t[ hidessid | -hidessid ] [ apbridge | -apbridge ]\n"); 1358 } 1359 1360 static void 1361 ieee80211_constructor(void) 1362 { 1363 cmdloop_branch_init(&branch[0], &ieee80211bool.pk_parser); 1364 cmdloop_branch_init(&branch[1], &kw80211.pk_parser); 1365 register_cmdloop_branch(&branch[0]); 1366 register_cmdloop_branch(&branch[1]); 1367 status_func_init(&status, ieee80211_status); 1368 statistics_func_init(&statistics, ieee80211_statistics); 1369 usage_func_init(&usage, ieee80211_usage); 1370 register_status(&status); 1371 register_statistics(&statistics); 1372 register_usage(&usage); 1373 } 1374