1 /* 2 * WPA Supplicant - driver interaction with BSD net80211 layer 3 * Copyright (c) 2004, Sam Leffler <sam@errno.com> 4 * Copyright (c) 2004, 2Wire, Inc 5 * 6 * This software may be distributed under the terms of the BSD license. 7 * See README for more details. 8 */ 9 10 #include "includes.h" 11 #include <sys/ioctl.h> 12 #include <sys/sysctl.h> 13 14 #include "common.h" 15 #include "driver.h" 16 #include "eloop.h" 17 #include "common/ieee802_11_defs.h" 18 #include "common/wpa_common.h" 19 20 #include <net/if.h> 21 #include <net/if_media.h> 22 23 #ifdef __NetBSD__ 24 #include <net/if_ether.h> 25 #else 26 #include <net/ethernet.h> 27 #endif 28 #include <net/route.h> 29 30 #ifdef __DragonFly__ 31 #include <netproto/802_11/ieee80211_ioctl.h> 32 #include <netproto/802_11/ieee80211_dragonfly.h> 33 #else /* __DragonFly__ */ 34 #ifdef __GLIBC__ 35 #include <netinet/ether.h> 36 #endif /* __GLIBC__ */ 37 #include <net80211/ieee80211.h> 38 #include <net80211/ieee80211_ioctl.h> 39 #include <net80211/ieee80211_crypto.h> 40 #endif /* __DragonFly__ || __GLIBC__ */ 41 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) 42 #include <net80211/ieee80211_freebsd.h> 43 #endif 44 #if __NetBSD__ 45 #include <net80211/ieee80211_netbsd.h> 46 #endif 47 48 #include "l2_packet/l2_packet.h" 49 50 struct bsd_driver_global { 51 void *ctx; 52 int sock; /* socket for 802.11 ioctls */ 53 int route; /* routing socket for events */ 54 char *event_buf; 55 size_t event_buf_len; 56 struct dl_list ifaces; /* list of interfaces */ 57 }; 58 59 struct bsd_driver_data { 60 struct dl_list list; 61 struct bsd_driver_global *global; 62 struct hostapd_data *hapd; /* back pointer */ 63 64 struct l2_packet_data *sock_xmit;/* raw packet xmit socket */ 65 char ifname[IFNAMSIZ+1]; /* interface name */ 66 int flags; 67 unsigned int ifindex; /* interface index */ 68 int if_removed; /* has the interface been removed? */ 69 void *ctx; 70 struct wpa_driver_capa capa; /* driver capability */ 71 int is_ap; /* Access point mode */ 72 int prev_roaming; /* roaming state to restore on deinit */ 73 int prev_privacy; /* privacy state to restore on deinit */ 74 int prev_wpa; /* wpa state to restore on deinit */ 75 enum ieee80211_opmode opmode; /* operation mode */ 76 }; 77 78 /* Generic functions for hostapd and wpa_supplicant */ 79 80 static struct bsd_driver_data * 81 bsd_get_drvindex(void *priv, unsigned int ifindex) 82 { 83 struct bsd_driver_global *global = priv; 84 struct bsd_driver_data *drv; 85 86 dl_list_for_each(drv, &global->ifaces, struct bsd_driver_data, list) { 87 if (drv->ifindex == ifindex) 88 return drv; 89 } 90 return NULL; 91 } 92 93 #ifndef HOSTAPD 94 static struct bsd_driver_data * 95 bsd_get_drvname(void *priv, const char *ifname) 96 { 97 struct bsd_driver_global *global = priv; 98 struct bsd_driver_data *drv; 99 100 dl_list_for_each(drv, &global->ifaces, struct bsd_driver_data, list) { 101 if (os_strcmp(drv->ifname, ifname) == 0) 102 return drv; 103 } 104 return NULL; 105 } 106 #endif /* HOSTAPD */ 107 108 static int 109 bsd_set80211(void *priv, int op, int val, const void *arg, int arg_len) 110 { 111 struct bsd_driver_data *drv = priv; 112 struct ieee80211req ireq; 113 114 if (drv->ifindex == 0 || drv->if_removed) 115 return -1; 116 117 os_memset(&ireq, 0, sizeof(ireq)); 118 os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name)); 119 ireq.i_type = op; 120 ireq.i_val = val; 121 ireq.i_data = (void *) arg; 122 ireq.i_len = arg_len; 123 124 if (ioctl(drv->global->sock, SIOCS80211, &ireq) < 0) { 125 wpa_printf(MSG_ERROR, "ioctl[SIOCS80211, op=%u, val=%u, " 126 "arg_len=%u]: %s", op, val, arg_len, 127 strerror(errno)); 128 return -1; 129 } 130 return 0; 131 } 132 133 static int 134 bsd_get80211(void *priv, struct ieee80211req *ireq, int op, void *arg, 135 int arg_len) 136 { 137 struct bsd_driver_data *drv = priv; 138 139 os_memset(ireq, 0, sizeof(*ireq)); 140 os_strlcpy(ireq->i_name, drv->ifname, sizeof(ireq->i_name)); 141 ireq->i_type = op; 142 ireq->i_len = arg_len; 143 ireq->i_data = arg; 144 145 if (ioctl(drv->global->sock, SIOCG80211, ireq) < 0) { 146 wpa_printf(MSG_ERROR, "ioctl[SIOCS80211, op=%u, " 147 "arg_len=%u]: %s", op, arg_len, strerror(errno)); 148 return -1; 149 } 150 return 0; 151 } 152 153 static int 154 get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len) 155 { 156 struct ieee80211req ireq; 157 158 if (bsd_get80211(drv, &ireq, op, arg, arg_len) < 0) 159 return -1; 160 return ireq.i_len; 161 } 162 163 static int 164 set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len) 165 { 166 return bsd_set80211(drv, op, 0, arg, arg_len); 167 } 168 169 static int 170 set80211param(struct bsd_driver_data *drv, int op, int arg) 171 { 172 return bsd_set80211(drv, op, arg, NULL, 0); 173 } 174 175 static int 176 bsd_get_ssid(void *priv, u8 *ssid, int len) 177 { 178 struct bsd_driver_data *drv = priv; 179 #ifdef SIOCG80211NWID 180 struct ieee80211_nwid nwid; 181 struct ifreq ifr; 182 183 os_memset(&ifr, 0, sizeof(ifr)); 184 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name)); 185 ifr.ifr_data = (void *)&nwid; 186 if (ioctl(drv->global->sock, SIOCG80211NWID, &ifr) < 0 || 187 nwid.i_len > IEEE80211_NWID_LEN) 188 return -1; 189 os_memcpy(ssid, nwid.i_nwid, nwid.i_len); 190 return nwid.i_len; 191 #else 192 return get80211var(drv, IEEE80211_IOC_SSID, ssid, IEEE80211_NWID_LEN); 193 #endif 194 } 195 196 static int 197 bsd_set_ssid(void *priv, const u8 *ssid, int ssid_len) 198 { 199 struct bsd_driver_data *drv = priv; 200 #ifdef SIOCS80211NWID 201 struct ieee80211_nwid nwid; 202 struct ifreq ifr; 203 204 os_memcpy(nwid.i_nwid, ssid, ssid_len); 205 nwid.i_len = ssid_len; 206 os_memset(&ifr, 0, sizeof(ifr)); 207 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name)); 208 ifr.ifr_data = (void *)&nwid; 209 return ioctl(drv->global->sock, SIOCS80211NWID, &ifr); 210 #else 211 return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len); 212 #endif 213 } 214 215 static int 216 bsd_get_if_media(void *priv) 217 { 218 struct bsd_driver_data *drv = priv; 219 struct ifmediareq ifmr; 220 221 os_memset(&ifmr, 0, sizeof(ifmr)); 222 os_strlcpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name)); 223 224 if (ioctl(drv->global->sock, SIOCGIFMEDIA, &ifmr) < 0) { 225 wpa_printf(MSG_ERROR, "%s: SIOCGIFMEDIA %s", __func__, 226 strerror(errno)); 227 return -1; 228 } 229 230 return ifmr.ifm_current; 231 } 232 233 static int 234 bsd_set_if_media(void *priv, int media) 235 { 236 struct bsd_driver_data *drv = priv; 237 struct ifreq ifr; 238 239 os_memset(&ifr, 0, sizeof(ifr)); 240 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name)); 241 ifr.ifr_media = media; 242 243 if (ioctl(drv->global->sock, SIOCSIFMEDIA, &ifr) < 0) { 244 wpa_printf(MSG_ERROR, "%s: SIOCSIFMEDIA %s", __func__, 245 strerror(errno)); 246 return -1; 247 } 248 249 return 0; 250 } 251 252 static int 253 bsd_set_mediaopt(void *priv, uint32_t mask, uint32_t mode) 254 { 255 int media = bsd_get_if_media(priv); 256 257 if (media < 0) 258 return -1; 259 media &= ~mask; 260 media |= mode; 261 if (bsd_set_if_media(priv, media) < 0) 262 return -1; 263 return 0; 264 } 265 266 static int 267 bsd_del_key(void *priv, const u8 *addr, int key_idx) 268 { 269 struct ieee80211req_del_key wk; 270 271 os_memset(&wk, 0, sizeof(wk)); 272 if (addr == NULL) { 273 wpa_printf(MSG_DEBUG, "%s: key_idx=%d", __func__, key_idx); 274 wk.idk_keyix = key_idx; 275 } else { 276 wpa_printf(MSG_DEBUG, "%s: addr=" MACSTR, __func__, 277 MAC2STR(addr)); 278 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN); 279 wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */ 280 } 281 282 return set80211var(priv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk)); 283 } 284 285 static int 286 bsd_send_mlme_param(void *priv, const u8 op, const u16 reason, const u8 *addr) 287 { 288 struct ieee80211req_mlme mlme; 289 290 os_memset(&mlme, 0, sizeof(mlme)); 291 mlme.im_op = op; 292 mlme.im_reason = reason; 293 os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN); 294 return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)); 295 } 296 297 static int 298 bsd_ctrl_iface(void *priv, int enable) 299 { 300 struct bsd_driver_data *drv = priv; 301 struct ifreq ifr; 302 303 os_memset(&ifr, 0, sizeof(ifr)); 304 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name)); 305 306 if (ioctl(drv->global->sock, SIOCGIFFLAGS, &ifr) < 0) { 307 wpa_printf(MSG_ERROR, "ioctl[SIOCGIFFLAGS]: %s", 308 strerror(errno)); 309 return -1; 310 } 311 drv->flags = ifr.ifr_flags; 312 313 if (enable) { 314 if (ifr.ifr_flags & IFF_UP) 315 return 0; 316 ifr.ifr_flags |= IFF_UP; 317 } else { 318 if (!(ifr.ifr_flags & IFF_UP)) 319 return 0; 320 ifr.ifr_flags &= ~IFF_UP; 321 } 322 323 if (ioctl(drv->global->sock, SIOCSIFFLAGS, &ifr) < 0) { 324 wpa_printf(MSG_ERROR, "ioctl[SIOCSIFFLAGS]: %s", 325 strerror(errno)); 326 return -1; 327 } 328 329 drv->flags = ifr.ifr_flags; 330 return 0; 331 } 332 333 static int 334 bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg, 335 const unsigned char *addr, int key_idx, int set_tx, const u8 *seq, 336 size_t seq_len, const u8 *key, size_t key_len) 337 { 338 struct ieee80211req_key wk; 339 #ifdef IEEE80211_KEY_NOREPLAY 340 struct bsd_driver_data *drv = priv; 341 #endif /* IEEE80211_KEY_NOREPLAY */ 342 343 wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d " 344 "seq_len=%zu key_len=%zu", __func__, alg, addr, key_idx, 345 set_tx, seq_len, key_len); 346 347 if (alg == WPA_ALG_NONE) { 348 #ifndef HOSTAPD 349 if (addr == NULL || is_broadcast_ether_addr(addr)) 350 return bsd_del_key(priv, NULL, key_idx); 351 else 352 #endif /* HOSTAPD */ 353 return bsd_del_key(priv, addr, key_idx); 354 } 355 356 os_memset(&wk, 0, sizeof(wk)); 357 switch (alg) { 358 case WPA_ALG_WEP: 359 wk.ik_type = IEEE80211_CIPHER_WEP; 360 break; 361 case WPA_ALG_TKIP: 362 wk.ik_type = IEEE80211_CIPHER_TKIP; 363 break; 364 case WPA_ALG_CCMP: 365 wk.ik_type = IEEE80211_CIPHER_AES_CCM; 366 break; 367 default: 368 wpa_printf(MSG_ERROR, "%s: unknown alg=%d", __func__, alg); 369 return -1; 370 } 371 372 wk.ik_flags = IEEE80211_KEY_RECV; 373 if (set_tx) 374 wk.ik_flags |= IEEE80211_KEY_XMIT; 375 376 if (addr == NULL) { 377 os_memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN); 378 wk.ik_keyix = key_idx; 379 } else { 380 os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN); 381 /* 382 * Deduce whether group/global or unicast key by checking 383 * the address (yech). Note also that we can only mark global 384 * keys default; doing this for a unicast key is an error. 385 */ 386 if (is_broadcast_ether_addr(addr)) { 387 wk.ik_flags |= IEEE80211_KEY_GROUP; 388 wk.ik_keyix = key_idx; 389 } else { 390 wk.ik_keyix = key_idx == 0 ? IEEE80211_KEYIX_NONE : 391 key_idx; 392 } 393 } 394 if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx) 395 wk.ik_flags |= IEEE80211_KEY_DEFAULT; 396 #ifndef HOSTAPD 397 #ifdef IEEE80211_KEY_NOREPLAY 398 /* 399 * Ignore replay failures in IBSS and AHDEMO mode. 400 */ 401 if (drv->opmode == IEEE80211_M_IBSS || 402 drv->opmode == IEEE80211_M_AHDEMO) 403 wk.ik_flags |= IEEE80211_KEY_NOREPLAY; 404 #endif /* IEEE80211_KEY_NOREPLAY */ 405 #endif /* HOSTAPD */ 406 wk.ik_keylen = key_len; 407 if (seq) { 408 #ifdef WORDS_BIGENDIAN 409 /* 410 * wk.ik_keyrsc is in host byte order (big endian), need to 411 * swap it to match with the byte order used in WPA. 412 */ 413 int i; 414 u8 *keyrsc = (u8 *) &wk.ik_keyrsc; 415 for (i = 0; i < seq_len; i++) 416 keyrsc[WPA_KEY_RSC_LEN - i - 1] = seq[i]; 417 #else /* WORDS_BIGENDIAN */ 418 os_memcpy(&wk.ik_keyrsc, seq, seq_len); 419 #endif /* WORDS_BIGENDIAN */ 420 } 421 os_memcpy(wk.ik_keydata, key, key_len); 422 423 return set80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)); 424 } 425 426 static int 427 bsd_configure_wpa(void *priv, struct wpa_bss_params *params) 428 { 429 #ifndef IEEE80211_IOC_APPIE 430 static const char *ciphernames[] = 431 { "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" }; 432 int v; 433 434 switch (params->wpa_group) { 435 case WPA_CIPHER_CCMP: 436 v = IEEE80211_CIPHER_AES_CCM; 437 break; 438 case WPA_CIPHER_TKIP: 439 v = IEEE80211_CIPHER_TKIP; 440 break; 441 case WPA_CIPHER_WEP104: 442 v = IEEE80211_CIPHER_WEP; 443 break; 444 case WPA_CIPHER_WEP40: 445 v = IEEE80211_CIPHER_WEP; 446 break; 447 case WPA_CIPHER_NONE: 448 v = IEEE80211_CIPHER_NONE; 449 break; 450 default: 451 wpa_printf(MSG_INFO, "Unknown group key cipher %u", 452 params->wpa_group); 453 return -1; 454 } 455 wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)", 456 __func__, ciphernames[v], v); 457 if (set80211param(priv, IEEE80211_IOC_MCASTCIPHER, v)) { 458 wpa_printf(MSG_INFO, 459 "Unable to set group key cipher to %u (%s)", 460 v, ciphernames[v]); 461 return -1; 462 } 463 if (v == IEEE80211_CIPHER_WEP) { 464 /* key length is done only for specific ciphers */ 465 v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5); 466 if (set80211param(priv, IEEE80211_IOC_MCASTKEYLEN, v)) { 467 wpa_printf(MSG_INFO, 468 "Unable to set group key length to %u", v); 469 return -1; 470 } 471 } 472 473 v = 0; 474 if (params->wpa_pairwise & WPA_CIPHER_CCMP) 475 v |= 1<<IEEE80211_CIPHER_AES_CCM; 476 if (params->wpa_pairwise & WPA_CIPHER_TKIP) 477 v |= 1<<IEEE80211_CIPHER_TKIP; 478 if (params->wpa_pairwise & WPA_CIPHER_NONE) 479 v |= 1<<IEEE80211_CIPHER_NONE; 480 wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v); 481 if (set80211param(priv, IEEE80211_IOC_UCASTCIPHERS, v)) { 482 wpa_printf(MSG_INFO, 483 "Unable to set pairwise key ciphers to 0x%x", v); 484 return -1; 485 } 486 487 wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x", 488 __func__, params->wpa_key_mgmt); 489 if (set80211param(priv, IEEE80211_IOC_KEYMGTALGS, 490 params->wpa_key_mgmt)) { 491 wpa_printf(MSG_INFO, 492 "Unable to set key management algorithms to 0x%x", 493 params->wpa_key_mgmt); 494 return -1; 495 } 496 497 v = 0; 498 if (params->rsn_preauth) 499 v |= BIT(0); 500 wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x", 501 __func__, params->rsn_preauth); 502 if (set80211param(priv, IEEE80211_IOC_RSNCAPS, v)) { 503 wpa_printf(MSG_INFO, "Unable to set RSN capabilities to 0x%x", 504 v); 505 return -1; 506 } 507 #endif /* IEEE80211_IOC_APPIE */ 508 509 wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, params->wpa); 510 if (set80211param(priv, IEEE80211_IOC_WPA, params->wpa)) { 511 wpa_printf(MSG_INFO, "Unable to set WPA to %u", params->wpa); 512 return -1; 513 } 514 return 0; 515 } 516 517 static int 518 bsd_set_ieee8021x(void *priv, struct wpa_bss_params *params) 519 { 520 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled); 521 522 if (!params->enabled) { 523 /* XXX restore state */ 524 return set80211param(priv, IEEE80211_IOC_AUTHMODE, 525 IEEE80211_AUTH_AUTO); 526 } 527 if (!params->wpa && !params->ieee802_1x) { 528 wpa_printf(MSG_ERROR, "%s: No 802.1X or WPA enabled", 529 __func__); 530 return -1; 531 } 532 if (params->wpa && bsd_configure_wpa(priv, params) != 0) { 533 wpa_printf(MSG_ERROR, "%s: Failed to configure WPA state", 534 __func__); 535 return -1; 536 } 537 if (set80211param(priv, IEEE80211_IOC_AUTHMODE, 538 (params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) { 539 wpa_printf(MSG_ERROR, "%s: Failed to enable WPA/802.1X", 540 __func__); 541 return -1; 542 } 543 return bsd_ctrl_iface(priv, 1); 544 } 545 546 static void 547 bsd_new_sta(void *priv, void *ctx, u8 addr[IEEE80211_ADDR_LEN]) 548 { 549 struct ieee80211req_wpaie ie; 550 int ielen = 0; 551 u8 *iebuf = NULL; 552 553 /* 554 * Fetch and validate any negotiated WPA/RSN parameters. 555 */ 556 memset(&ie, 0, sizeof(ie)); 557 memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN); 558 if (get80211var(priv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) { 559 wpa_printf(MSG_INFO, 560 "Failed to get WPA/RSN information element"); 561 goto no_ie; 562 } 563 iebuf = ie.wpa_ie; 564 ielen = ie.wpa_ie[1]; 565 if (ielen == 0) 566 iebuf = NULL; 567 else 568 ielen += 2; 569 570 no_ie: 571 drv_event_assoc(ctx, addr, iebuf, ielen, 0); 572 } 573 574 static int 575 bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len, 576 int encrypt, const u8 *own_addr, u32 flags) 577 { 578 struct bsd_driver_data *drv = priv; 579 580 wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", data, data_len); 581 582 return l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, data, 583 data_len); 584 } 585 586 static int 587 bsd_set_freq(void *priv, struct hostapd_freq_params *freq) 588 { 589 struct bsd_driver_data *drv = priv; 590 #ifdef SIOCS80211CHANNEL 591 struct ieee80211chanreq creq; 592 #endif /* SIOCS80211CHANNEL */ 593 u32 mode; 594 int channel = freq->channel; 595 596 if (channel < 14) { 597 mode = 598 #ifdef CONFIG_IEEE80211N 599 freq->ht_enabled ? IFM_IEEE80211_11NG : 600 #endif /* CONFIG_IEEE80211N */ 601 IFM_IEEE80211_11G; 602 } else if (channel == 14) { 603 mode = IFM_IEEE80211_11B; 604 } else { 605 mode = 606 #ifdef CONFIG_IEEE80211N 607 freq->ht_enabled ? IFM_IEEE80211_11NA : 608 #endif /* CONFIG_IEEE80211N */ 609 IFM_IEEE80211_11A; 610 } 611 if (bsd_set_mediaopt(drv, IFM_MMASK, mode) < 0) { 612 wpa_printf(MSG_ERROR, "%s: failed to set modulation mode", 613 __func__); 614 return -1; 615 } 616 617 #ifdef SIOCS80211CHANNEL 618 os_memset(&creq, 0, sizeof(creq)); 619 os_strlcpy(creq.i_name, drv->ifname, sizeof(creq.i_name)); 620 creq.i_channel = (u_int16_t)channel; 621 return ioctl(drv->global->sock, SIOCS80211CHANNEL, &creq); 622 #else /* SIOCS80211CHANNEL */ 623 return set80211param(priv, IEEE80211_IOC_CHANNEL, channel); 624 #endif /* SIOCS80211CHANNEL */ 625 } 626 627 static int 628 bsd_set_opt_ie(void *priv, const u8 *ie, size_t ie_len) 629 { 630 #ifdef IEEE80211_IOC_APPIE 631 wpa_printf(MSG_DEBUG, "%s: set WPA+RSN ie (len %lu)", __func__, 632 (unsigned long)ie_len); 633 return bsd_set80211(priv, IEEE80211_IOC_APPIE, IEEE80211_APPIE_WPA, 634 ie, ie_len); 635 #endif /* IEEE80211_IOC_APPIE */ 636 return 0; 637 } 638 639 static size_t 640 rtbuf_len(void) 641 { 642 size_t len; 643 644 int mib[6] = {CTL_NET, AF_ROUTE, 0, AF_INET, NET_RT_DUMP, 0}; 645 646 if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) { 647 wpa_printf(MSG_WARNING, "%s failed: %s", __func__, 648 strerror(errno)); 649 len = 2048; 650 } 651 652 return len; 653 } 654 655 #ifdef HOSTAPD 656 657 /* 658 * Avoid conflicts with hostapd definitions by undefining couple of defines 659 * from net80211 header files. 660 */ 661 #undef RSN_VERSION 662 #undef WPA_VERSION 663 #undef WPA_OUI_TYPE 664 665 static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 666 int reason_code); 667 668 static const char * 669 ether_sprintf(const u8 *addr) 670 { 671 static char buf[sizeof(MACSTR)]; 672 673 if (addr != NULL) 674 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr)); 675 else 676 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0); 677 return buf; 678 } 679 680 static int 681 bsd_set_privacy(void *priv, int enabled) 682 { 683 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled); 684 685 return set80211param(priv, IEEE80211_IOC_PRIVACY, enabled); 686 } 687 688 static int 689 bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx, 690 u8 *seq) 691 { 692 struct ieee80211req_key wk; 693 694 wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d", 695 __func__, ether_sprintf(addr), idx); 696 697 memset(&wk, 0, sizeof(wk)); 698 if (addr == NULL) 699 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN); 700 else 701 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN); 702 wk.ik_keyix = idx; 703 704 if (get80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) { 705 wpa_printf(MSG_INFO, "Failed to get encryption"); 706 return -1; 707 } 708 709 #ifdef WORDS_BIGENDIAN 710 { 711 /* 712 * wk.ik_keytsc is in host byte order (big endian), need to 713 * swap it to match with the byte order used in WPA. 714 */ 715 int i; 716 u8 tmp[WPA_KEY_RSC_LEN]; 717 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc)); 718 for (i = 0; i < WPA_KEY_RSC_LEN; i++) { 719 seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1]; 720 } 721 } 722 #else /* WORDS_BIGENDIAN */ 723 memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc)); 724 #endif /* WORDS_BIGENDIAN */ 725 return 0; 726 } 727 728 729 static int 730 bsd_flush(void *priv) 731 { 732 u8 allsta[IEEE80211_ADDR_LEN]; 733 734 memset(allsta, 0xff, IEEE80211_ADDR_LEN); 735 return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE); 736 } 737 738 739 static int 740 bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data, 741 const u8 *addr) 742 { 743 struct ieee80211req_sta_stats stats; 744 745 memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN); 746 if (get80211var(priv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats)) 747 > 0) { 748 /* XXX? do packets counts include non-data frames? */ 749 data->rx_packets = stats.is_stats.ns_rx_data; 750 data->rx_bytes = stats.is_stats.ns_rx_bytes; 751 data->tx_packets = stats.is_stats.ns_tx_data; 752 data->tx_bytes = stats.is_stats.ns_tx_bytes; 753 } 754 return 0; 755 } 756 757 static int 758 bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code) 759 { 760 return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code, 761 addr); 762 } 763 764 static int 765 bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 766 int reason_code) 767 { 768 return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code, 769 addr); 770 } 771 772 static void 773 bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx) 774 { 775 struct bsd_driver_global *global = sock_ctx; 776 struct bsd_driver_data *drv; 777 struct if_announcemsghdr *ifan; 778 struct rt_msghdr *rtm; 779 struct ieee80211_michael_event *mic; 780 struct ieee80211_join_event *join; 781 struct ieee80211_leave_event *leave; 782 int n; 783 union wpa_event_data data; 784 785 n = read(sock, global->event_buf, global->event_buf_len); 786 if (n < 0) { 787 if (errno != EINTR && errno != EAGAIN) 788 wpa_printf(MSG_ERROR, "%s read() failed: %s", 789 __func__, strerror(errno)); 790 return; 791 } 792 793 rtm = (struct rt_msghdr *) global->event_buf; 794 if (rtm->rtm_version != RTM_VERSION) { 795 wpa_printf(MSG_DEBUG, "Invalid routing message version=%d", 796 rtm->rtm_version); 797 return; 798 } 799 switch (rtm->rtm_type) { 800 case RTM_IEEE80211: 801 ifan = (struct if_announcemsghdr *) rtm; 802 drv = bsd_get_drvindex(global, ifan->ifan_index); 803 if (drv == NULL) 804 return; 805 switch (ifan->ifan_what) { 806 case RTM_IEEE80211_ASSOC: 807 case RTM_IEEE80211_REASSOC: 808 case RTM_IEEE80211_DISASSOC: 809 case RTM_IEEE80211_SCAN: 810 break; 811 case RTM_IEEE80211_LEAVE: 812 leave = (struct ieee80211_leave_event *) &ifan[1]; 813 drv_event_disassoc(drv->hapd, leave->iev_addr); 814 break; 815 case RTM_IEEE80211_JOIN: 816 #ifdef RTM_IEEE80211_REJOIN 817 case RTM_IEEE80211_REJOIN: 818 #endif 819 join = (struct ieee80211_join_event *) &ifan[1]; 820 bsd_new_sta(drv, drv->hapd, join->iev_addr); 821 break; 822 case RTM_IEEE80211_REPLAY: 823 /* ignore */ 824 break; 825 case RTM_IEEE80211_MICHAEL: 826 mic = (struct ieee80211_michael_event *) &ifan[1]; 827 wpa_printf(MSG_DEBUG, 828 "Michael MIC failure wireless event: " 829 "keyix=%u src_addr=" MACSTR, mic->iev_keyix, 830 MAC2STR(mic->iev_src)); 831 os_memset(&data, 0, sizeof(data)); 832 data.michael_mic_failure.unicast = 1; 833 data.michael_mic_failure.src = mic->iev_src; 834 wpa_supplicant_event(drv->hapd, 835 EVENT_MICHAEL_MIC_FAILURE, &data); 836 break; 837 } 838 break; 839 } 840 } 841 842 static void 843 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len) 844 { 845 struct bsd_driver_data *drv = ctx; 846 drv_event_eapol_rx(drv->hapd, src_addr, buf, len); 847 } 848 849 static void * 850 bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params) 851 { 852 struct bsd_driver_data *drv; 853 854 drv = os_zalloc(sizeof(struct bsd_driver_data)); 855 if (drv == NULL) { 856 wpa_printf(MSG_ERROR, "Could not allocate memory for bsd driver data"); 857 return NULL; 858 } 859 860 drv->ifindex = if_nametoindex(params->ifname); 861 if (drv->ifindex == 0) { 862 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist", 863 __func__, params->ifname); 864 goto bad; 865 } 866 867 drv->hapd = hapd; 868 drv->global = params->global_priv; 869 os_strlcpy(drv->ifname, params->ifname, sizeof(drv->ifname)); 870 871 drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL, 872 handle_read, drv, 0); 873 if (drv->sock_xmit == NULL) 874 goto bad; 875 if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr)) 876 goto bad; 877 878 /* mark down during setup */ 879 if (bsd_ctrl_iface(drv, 0) < 0) 880 goto bad; 881 882 if (bsd_set_mediaopt(drv, IFM_OMASK, IFM_IEEE80211_HOSTAP) < 0) { 883 wpa_printf(MSG_ERROR, "%s: failed to set operation mode", 884 __func__); 885 goto bad; 886 } 887 888 dl_list_add(&drv->global->ifaces, &drv->list); 889 890 return drv; 891 bad: 892 if (drv->sock_xmit != NULL) 893 l2_packet_deinit(drv->sock_xmit); 894 os_free(drv); 895 return NULL; 896 } 897 898 899 static void 900 bsd_deinit(void *priv) 901 { 902 struct bsd_driver_data *drv = priv; 903 904 if (drv->ifindex != 0) 905 bsd_ctrl_iface(drv, 0); 906 if (drv->sock_xmit != NULL) 907 l2_packet_deinit(drv->sock_xmit); 908 os_free(drv); 909 } 910 911 912 static int 913 bsd_commit(void *priv) 914 { 915 return bsd_ctrl_iface(priv, 1); 916 } 917 918 919 static int 920 bsd_set_sta_authorized(void *priv, const u8 *addr, 921 int total_flags, int flags_or, int flags_and) 922 { 923 int authorized = -1; 924 925 /* For now, only support setting Authorized flag */ 926 if (flags_or & WPA_STA_AUTHORIZED) 927 authorized = 1; 928 if (!(flags_and & WPA_STA_AUTHORIZED)) 929 authorized = 0; 930 931 if (authorized < 0) 932 return 0; 933 934 return bsd_send_mlme_param(priv, authorized ? 935 IEEE80211_MLME_AUTHORIZE : 936 IEEE80211_MLME_UNAUTHORIZE, 0, addr); 937 } 938 #else /* HOSTAPD */ 939 940 static int 941 get80211param(struct bsd_driver_data *drv, int op) 942 { 943 struct ieee80211req ireq; 944 945 if (bsd_get80211(drv, &ireq, op, NULL, 0) < 0) 946 return -1; 947 return ireq.i_val; 948 } 949 950 static int 951 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid) 952 { 953 struct bsd_driver_data *drv = priv; 954 #ifdef SIOCG80211BSSID 955 struct ieee80211_bssid bs; 956 957 os_strlcpy(bs.i_name, drv->ifname, sizeof(bs.i_name)); 958 if (ioctl(drv->global->sock, SIOCG80211BSSID, &bs) < 0) 959 return -1; 960 os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid)); 961 return 0; 962 #else 963 return get80211var(drv, IEEE80211_IOC_BSSID, 964 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0; 965 #endif 966 } 967 968 static int 969 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid) 970 { 971 struct bsd_driver_data *drv = priv; 972 return bsd_get_ssid(drv, ssid, 0); 973 } 974 975 static int 976 wpa_driver_bsd_set_wpa_ie(struct bsd_driver_data *drv, const u8 *wpa_ie, 977 size_t wpa_ie_len) 978 { 979 #ifdef IEEE80211_IOC_APPIE 980 return bsd_set_opt_ie(drv, wpa_ie, wpa_ie_len); 981 #else /* IEEE80211_IOC_APPIE */ 982 return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len); 983 #endif /* IEEE80211_IOC_APPIE */ 984 } 985 986 static int 987 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy) 988 { 989 int ret = 0; 990 991 wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d", 992 __func__, wpa, privacy); 993 994 if (!wpa && wpa_driver_bsd_set_wpa_ie(priv, NULL, 0) < 0) 995 ret = -1; 996 if (set80211param(priv, IEEE80211_IOC_PRIVACY, privacy) < 0) 997 ret = -1; 998 if (set80211param(priv, IEEE80211_IOC_WPA, wpa) < 0) 999 ret = -1; 1000 1001 return ret; 1002 } 1003 1004 static int 1005 wpa_driver_bsd_set_wpa(void *priv, int enabled) 1006 { 1007 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled); 1008 1009 return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled); 1010 } 1011 1012 static int 1013 wpa_driver_bsd_set_countermeasures(void *priv, int enabled) 1014 { 1015 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled); 1016 return set80211param(priv, IEEE80211_IOC_COUNTERMEASURES, enabled); 1017 } 1018 1019 1020 static int 1021 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled) 1022 { 1023 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled); 1024 return set80211param(priv, IEEE80211_IOC_DROPUNENCRYPTED, enabled); 1025 } 1026 1027 static int 1028 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code) 1029 { 1030 return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code, 1031 addr); 1032 } 1033 1034 static int 1035 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg) 1036 { 1037 int authmode; 1038 1039 if ((auth_alg & WPA_AUTH_ALG_OPEN) && 1040 (auth_alg & WPA_AUTH_ALG_SHARED)) 1041 authmode = IEEE80211_AUTH_AUTO; 1042 else if (auth_alg & WPA_AUTH_ALG_SHARED) 1043 authmode = IEEE80211_AUTH_SHARED; 1044 else 1045 authmode = IEEE80211_AUTH_OPEN; 1046 1047 return set80211param(priv, IEEE80211_IOC_AUTHMODE, authmode); 1048 } 1049 1050 static void 1051 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len) 1052 { 1053 struct bsd_driver_data *drv = ctx; 1054 1055 drv_event_eapol_rx(drv->ctx, src_addr, buf, len); 1056 } 1057 1058 static int 1059 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params) 1060 { 1061 struct bsd_driver_data *drv = priv; 1062 struct ieee80211req_mlme mlme; 1063 u32 mode; 1064 int privacy; 1065 int ret = 0; 1066 1067 wpa_printf(MSG_DEBUG, 1068 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u" 1069 , __func__ 1070 , (unsigned int) params->ssid_len, params->ssid 1071 , (unsigned int) params->wpa_ie_len 1072 , params->pairwise_suite 1073 , params->group_suite 1074 , params->key_mgmt_suite 1075 ); 1076 1077 switch (params->mode) { 1078 case IEEE80211_MODE_INFRA: 1079 mode = 0 /* STA */; 1080 break; 1081 case IEEE80211_MODE_IBSS: 1082 mode = IFM_IEEE80211_IBSS; 1083 break; 1084 case IEEE80211_MODE_AP: 1085 mode = IFM_IEEE80211_HOSTAP; 1086 break; 1087 default: 1088 wpa_printf(MSG_ERROR, "%s: unknown operation mode", __func__); 1089 return -1; 1090 } 1091 if (bsd_set_mediaopt(drv, IFM_OMASK, mode) < 0) { 1092 wpa_printf(MSG_ERROR, "%s: failed to set operation mode", 1093 __func__); 1094 return -1; 1095 } 1096 1097 if (params->mode == IEEE80211_MODE_AP) { 1098 drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL, 1099 handle_read, drv, 0); 1100 if (drv->sock_xmit == NULL) 1101 return -1; 1102 drv->is_ap = 1; 1103 return 0; 1104 } 1105 1106 if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted) 1107 < 0) 1108 ret = -1; 1109 if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0) 1110 ret = -1; 1111 /* XXX error handling is wrong but unclear what to do... */ 1112 if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0) 1113 return -1; 1114 1115 privacy = !(params->pairwise_suite == WPA_CIPHER_NONE && 1116 params->group_suite == WPA_CIPHER_NONE && 1117 params->key_mgmt_suite == WPA_KEY_MGMT_NONE && 1118 params->wpa_ie_len == 0); 1119 wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy); 1120 1121 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0) 1122 return -1; 1123 1124 if (params->wpa_ie_len && 1125 set80211param(drv, IEEE80211_IOC_WPA, 1126 params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0) 1127 return -1; 1128 1129 os_memset(&mlme, 0, sizeof(mlme)); 1130 mlme.im_op = IEEE80211_MLME_ASSOC; 1131 if (params->ssid != NULL) 1132 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len); 1133 mlme.im_ssid_len = params->ssid_len; 1134 if (params->bssid != NULL) 1135 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN); 1136 if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0) 1137 return -1; 1138 return ret; 1139 } 1140 1141 static int 1142 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params) 1143 { 1144 struct bsd_driver_data *drv = priv; 1145 #ifdef IEEE80211_IOC_SCAN_MAX_SSID 1146 struct ieee80211_scan_req sr; 1147 int i; 1148 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */ 1149 1150 if (bsd_set_mediaopt(drv, IFM_OMASK, 0 /* STA */) < 0) { 1151 wpa_printf(MSG_ERROR, "%s: failed to set operation mode", 1152 __func__); 1153 return -1; 1154 } 1155 1156 if (set80211param(drv, IEEE80211_IOC_ROAMING, 1157 IEEE80211_ROAMING_MANUAL) < 0) { 1158 wpa_printf(MSG_ERROR, "%s: failed to set " 1159 "wpa_supplicant-based roaming: %s", __func__, 1160 strerror(errno)); 1161 return -1; 1162 } 1163 1164 if (wpa_driver_bsd_set_wpa(drv, 1) < 0) { 1165 wpa_printf(MSG_ERROR, "%s: failed to set wpa: %s", __func__, 1166 strerror(errno)); 1167 return -1; 1168 } 1169 1170 /* NB: interface must be marked UP to do a scan */ 1171 if (bsd_ctrl_iface(drv, 1) < 0) 1172 return -1; 1173 1174 #ifdef IEEE80211_IOC_SCAN_MAX_SSID 1175 os_memset(&sr, 0, sizeof(sr)); 1176 sr.sr_flags = IEEE80211_IOC_SCAN_ACTIVE | IEEE80211_IOC_SCAN_ONCE | 1177 IEEE80211_IOC_SCAN_NOJOIN; 1178 sr.sr_duration = IEEE80211_IOC_SCAN_FOREVER; 1179 if (params->num_ssids > 0) { 1180 sr.sr_nssid = params->num_ssids; 1181 #if 0 1182 /* Boundary check is done by upper layer */ 1183 if (sr.sr_nssid > IEEE80211_IOC_SCAN_MAX_SSID) 1184 sr.sr_nssid = IEEE80211_IOC_SCAN_MAX_SSID; 1185 #endif 1186 1187 /* NB: check scan cache first */ 1188 sr.sr_flags |= IEEE80211_IOC_SCAN_CHECK; 1189 } 1190 for (i = 0; i < sr.sr_nssid; i++) { 1191 sr.sr_ssid[i].len = params->ssids[i].ssid_len; 1192 os_memcpy(sr.sr_ssid[i].ssid, params->ssids[i].ssid, 1193 sr.sr_ssid[i].len); 1194 } 1195 1196 /* NB: net80211 delivers a scan complete event so no need to poll */ 1197 return set80211var(drv, IEEE80211_IOC_SCAN_REQ, &sr, sizeof(sr)); 1198 #else /* IEEE80211_IOC_SCAN_MAX_SSID */ 1199 /* set desired ssid before scan */ 1200 if (bsd_set_ssid(drv, params->ssids[0].ssid, 1201 params->ssids[0].ssid_len) < 0) 1202 return -1; 1203 1204 /* NB: net80211 delivers a scan complete event so no need to poll */ 1205 return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0); 1206 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */ 1207 } 1208 1209 static void 1210 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx) 1211 { 1212 struct bsd_driver_global *global = sock_ctx; 1213 struct bsd_driver_data *drv; 1214 struct if_announcemsghdr *ifan; 1215 struct if_msghdr *ifm; 1216 struct rt_msghdr *rtm; 1217 union wpa_event_data event; 1218 struct ieee80211_michael_event *mic; 1219 struct ieee80211_leave_event *leave; 1220 struct ieee80211_join_event *join; 1221 int n; 1222 1223 n = read(sock, global->event_buf, global->event_buf_len); 1224 if (n < 0) { 1225 if (errno != EINTR && errno != EAGAIN) 1226 wpa_printf(MSG_ERROR, "%s read() failed: %s", 1227 __func__, strerror(errno)); 1228 return; 1229 } 1230 1231 rtm = (struct rt_msghdr *) global->event_buf; 1232 if (rtm->rtm_version != RTM_VERSION) { 1233 wpa_printf(MSG_DEBUG, "Invalid routing message version=%d", 1234 rtm->rtm_version); 1235 return; 1236 } 1237 os_memset(&event, 0, sizeof(event)); 1238 switch (rtm->rtm_type) { 1239 case RTM_IFANNOUNCE: 1240 ifan = (struct if_announcemsghdr *) rtm; 1241 switch (ifan->ifan_what) { 1242 case IFAN_DEPARTURE: 1243 drv = bsd_get_drvindex(global, ifan->ifan_index); 1244 if (drv) 1245 drv->if_removed = 1; 1246 event.interface_status.ievent = EVENT_INTERFACE_REMOVED; 1247 break; 1248 case IFAN_ARRIVAL: 1249 drv = bsd_get_drvname(global, ifan->ifan_name); 1250 if (drv) { 1251 drv->ifindex = ifan->ifan_index; 1252 drv->if_removed = 0; 1253 } 1254 event.interface_status.ievent = EVENT_INTERFACE_ADDED; 1255 break; 1256 default: 1257 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: unknown action"); 1258 return; 1259 } 1260 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s", 1261 ifan->ifan_name, 1262 ifan->ifan_what == IFAN_DEPARTURE ? 1263 "removed" : "added"); 1264 os_strlcpy(event.interface_status.ifname, ifan->ifan_name, 1265 sizeof(event.interface_status.ifname)); 1266 if (drv) { 1267 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, 1268 &event); 1269 /* 1270 * Set ifindex to zero after sending the event as the 1271 * event might query the driver to ensure a match. 1272 */ 1273 if (ifan->ifan_what == IFAN_DEPARTURE) 1274 drv->ifindex = 0; 1275 } else { 1276 wpa_supplicant_event_global(global->ctx, 1277 EVENT_INTERFACE_STATUS, 1278 &event); 1279 } 1280 break; 1281 case RTM_IEEE80211: 1282 ifan = (struct if_announcemsghdr *) rtm; 1283 drv = bsd_get_drvindex(global, ifan->ifan_index); 1284 if (drv == NULL) 1285 return; 1286 switch (ifan->ifan_what) { 1287 case RTM_IEEE80211_ASSOC: 1288 case RTM_IEEE80211_REASSOC: 1289 if (drv->is_ap) 1290 break; 1291 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL); 1292 break; 1293 case RTM_IEEE80211_DISASSOC: 1294 if (drv->is_ap) 1295 break; 1296 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL); 1297 break; 1298 case RTM_IEEE80211_SCAN: 1299 if (drv->is_ap) 1300 break; 1301 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL); 1302 break; 1303 case RTM_IEEE80211_LEAVE: 1304 leave = (struct ieee80211_leave_event *) &ifan[1]; 1305 drv_event_disassoc(drv->ctx, leave->iev_addr); 1306 break; 1307 case RTM_IEEE80211_JOIN: 1308 #ifdef RTM_IEEE80211_REJOIN 1309 case RTM_IEEE80211_REJOIN: 1310 #endif 1311 join = (struct ieee80211_join_event *) &ifan[1]; 1312 bsd_new_sta(drv, drv->ctx, join->iev_addr); 1313 break; 1314 case RTM_IEEE80211_REPLAY: 1315 /* ignore */ 1316 break; 1317 case RTM_IEEE80211_MICHAEL: 1318 mic = (struct ieee80211_michael_event *) &ifan[1]; 1319 wpa_printf(MSG_DEBUG, 1320 "Michael MIC failure wireless event: " 1321 "keyix=%u src_addr=" MACSTR, mic->iev_keyix, 1322 MAC2STR(mic->iev_src)); 1323 1324 os_memset(&event, 0, sizeof(event)); 1325 event.michael_mic_failure.unicast = 1326 !IEEE80211_IS_MULTICAST(mic->iev_dst); 1327 wpa_supplicant_event(drv->ctx, 1328 EVENT_MICHAEL_MIC_FAILURE, &event); 1329 break; 1330 } 1331 break; 1332 case RTM_IFINFO: 1333 ifm = (struct if_msghdr *) rtm; 1334 drv = bsd_get_drvindex(global, ifm->ifm_index); 1335 if (drv == NULL) 1336 return; 1337 if ((ifm->ifm_flags & IFF_UP) == 0 && 1338 (drv->flags & IFF_UP) != 0) { 1339 wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN", 1340 drv->ifname); 1341 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, 1342 NULL); 1343 } else if ((ifm->ifm_flags & IFF_UP) != 0 && 1344 (drv->flags & IFF_UP) == 0) { 1345 wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' UP", 1346 drv->ifname); 1347 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, 1348 NULL); 1349 } 1350 drv->flags = ifm->ifm_flags; 1351 break; 1352 } 1353 } 1354 1355 static void 1356 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res, 1357 struct ieee80211req_scan_result *sr) 1358 { 1359 struct wpa_scan_res *result, **tmp; 1360 size_t extra_len; 1361 u8 *pos; 1362 1363 extra_len = 2 + sr->isr_ssid_len; 1364 extra_len += 2 + sr->isr_nrates; 1365 extra_len += 3; /* ERP IE */ 1366 extra_len += sr->isr_ie_len; 1367 1368 result = os_zalloc(sizeof(*result) + extra_len); 1369 if (result == NULL) 1370 return; 1371 os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN); 1372 result->freq = sr->isr_freq; 1373 result->beacon_int = sr->isr_intval; 1374 result->caps = sr->isr_capinfo; 1375 result->qual = sr->isr_rssi; 1376 result->noise = sr->isr_noise; 1377 1378 #ifdef __FreeBSD__ 1379 /* 1380 * the rssi value reported by the kernel is in 0.5dB steps relative to 1381 * the reported noise floor. see ieee80211_node.h for details. 1382 */ 1383 result->level = sr->isr_rssi / 2 + sr->isr_noise; 1384 #else 1385 result->level = sr->isr_rssi; 1386 #endif 1387 1388 pos = (u8 *)(result + 1); 1389 1390 *pos++ = WLAN_EID_SSID; 1391 *pos++ = sr->isr_ssid_len; 1392 os_memcpy(pos, sr + 1, sr->isr_ssid_len); 1393 pos += sr->isr_ssid_len; 1394 1395 /* 1396 * Deal all rates as supported rate. 1397 * Because net80211 doesn't report extended supported rate or not. 1398 */ 1399 *pos++ = WLAN_EID_SUPP_RATES; 1400 *pos++ = sr->isr_nrates; 1401 os_memcpy(pos, sr->isr_rates, sr->isr_nrates); 1402 pos += sr->isr_nrates; 1403 1404 *pos++ = WLAN_EID_ERP_INFO; 1405 *pos++ = 1; 1406 *pos++ = sr->isr_erp; 1407 1408 #if defined(__DragonFly__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) 1409 os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len + sr->isr_meshid_len, 1410 sr->isr_ie_len); 1411 #else 1412 os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len); 1413 #endif 1414 pos += sr->isr_ie_len; 1415 1416 result->ie_len = pos - (u8 *)(result + 1); 1417 1418 tmp = os_realloc_array(res->res, res->num + 1, 1419 sizeof(struct wpa_scan_res *)); 1420 if (tmp == NULL) { 1421 os_free(result); 1422 return; 1423 } 1424 tmp[res->num++] = result; 1425 res->res = tmp; 1426 } 1427 1428 struct wpa_scan_results * 1429 wpa_driver_bsd_get_scan_results2(void *priv) 1430 { 1431 struct ieee80211req_scan_result *sr; 1432 struct wpa_scan_results *res; 1433 int len, rest; 1434 uint8_t buf[24*1024], *pos; 1435 1436 len = get80211var(priv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024); 1437 if (len < 0) 1438 return NULL; 1439 1440 res = os_zalloc(sizeof(*res)); 1441 if (res == NULL) 1442 return NULL; 1443 1444 pos = buf; 1445 rest = len; 1446 while (rest >= sizeof(struct ieee80211req_scan_result)) { 1447 sr = (struct ieee80211req_scan_result *)pos; 1448 wpa_driver_bsd_add_scan_entry(res, sr); 1449 pos += sr->isr_len; 1450 rest -= sr->isr_len; 1451 } 1452 1453 wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)", 1454 len, (unsigned long)res->num); 1455 1456 return res; 1457 } 1458 1459 static int wpa_driver_bsd_capa(struct bsd_driver_data *drv) 1460 { 1461 #ifdef IEEE80211_IOC_DEVCAPS 1462 /* kernel definitions copied from net80211/ieee80211_var.h */ 1463 #define IEEE80211_CIPHER_WEP 0 1464 #define IEEE80211_CIPHER_TKIP 1 1465 #define IEEE80211_CIPHER_AES_CCM 3 1466 #define IEEE80211_CRYPTO_WEP (1<<IEEE80211_CIPHER_WEP) 1467 #define IEEE80211_CRYPTO_TKIP (1<<IEEE80211_CIPHER_TKIP) 1468 #define IEEE80211_CRYPTO_AES_CCM (1<<IEEE80211_CIPHER_AES_CCM) 1469 #define IEEE80211_C_HOSTAP 0x00000400 /* CAPABILITY: HOSTAP avail */ 1470 #define IEEE80211_C_WPA1 0x00800000 /* CAPABILITY: WPA1 avail */ 1471 #define IEEE80211_C_WPA2 0x01000000 /* CAPABILITY: WPA2 avail */ 1472 struct ieee80211_devcaps_req devcaps; 1473 1474 if (get80211var(drv, IEEE80211_IOC_DEVCAPS, &devcaps, 1475 sizeof(devcaps)) < 0) { 1476 wpa_printf(MSG_ERROR, "failed to IEEE80211_IOC_DEVCAPS: %s", 1477 strerror(errno)); 1478 return -1; 1479 } 1480 1481 wpa_printf(MSG_DEBUG, "%s: drivercaps=0x%08x,cryptocaps=0x%08x", 1482 __func__, devcaps.dc_drivercaps, devcaps.dc_cryptocaps); 1483 1484 if (devcaps.dc_drivercaps & IEEE80211_C_WPA1) 1485 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 1486 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK; 1487 if (devcaps.dc_drivercaps & IEEE80211_C_WPA2) 1488 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 1489 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 1490 1491 if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_WEP) 1492 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 | 1493 WPA_DRIVER_CAPA_ENC_WEP104; 1494 if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_TKIP) 1495 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP; 1496 if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_AES_CCM) 1497 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP; 1498 1499 if (devcaps.dc_drivercaps & IEEE80211_C_HOSTAP) 1500 drv->capa.flags |= WPA_DRIVER_FLAGS_AP; 1501 #undef IEEE80211_CIPHER_WEP 1502 #undef IEEE80211_CIPHER_TKIP 1503 #undef IEEE80211_CIPHER_AES_CCM 1504 #undef IEEE80211_CRYPTO_WEP 1505 #undef IEEE80211_CRYPTO_TKIP 1506 #undef IEEE80211_CRYPTO_AES_CCM 1507 #undef IEEE80211_C_HOSTAP 1508 #undef IEEE80211_C_WPA1 1509 #undef IEEE80211_C_WPA2 1510 #else /* IEEE80211_IOC_DEVCAPS */ 1511 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */ 1512 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 1513 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 1514 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 1515 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 1516 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 | 1517 WPA_DRIVER_CAPA_ENC_WEP104 | 1518 WPA_DRIVER_CAPA_ENC_TKIP | 1519 WPA_DRIVER_CAPA_ENC_CCMP; 1520 drv->capa.flags |= WPA_DRIVER_FLAGS_AP; 1521 #endif /* IEEE80211_IOC_DEVCAPS */ 1522 #ifdef IEEE80211_IOC_SCAN_MAX_SSID 1523 drv->capa.max_scan_ssids = IEEE80211_IOC_SCAN_MAX_SSID; 1524 #else /* IEEE80211_IOC_SCAN_MAX_SSID */ 1525 drv->capa.max_scan_ssids = 1; 1526 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */ 1527 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 1528 WPA_DRIVER_AUTH_SHARED | 1529 WPA_DRIVER_AUTH_LEAP; 1530 return 0; 1531 } 1532 1533 static enum ieee80211_opmode 1534 get80211opmode(struct bsd_driver_data *drv) 1535 { 1536 struct ifmediareq ifmr; 1537 1538 (void) memset(&ifmr, 0, sizeof(ifmr)); 1539 (void) os_strlcpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name)); 1540 1541 if (ioctl(drv->global->sock, SIOCGIFMEDIA, (caddr_t)&ifmr) >= 0) { 1542 if (ifmr.ifm_current & IFM_IEEE80211_ADHOC) { 1543 if (ifmr.ifm_current & IFM_FLAG0) 1544 return IEEE80211_M_AHDEMO; 1545 else 1546 return IEEE80211_M_IBSS; 1547 } 1548 if (ifmr.ifm_current & IFM_IEEE80211_HOSTAP) 1549 return IEEE80211_M_HOSTAP; 1550 if (ifmr.ifm_current & IFM_IEEE80211_MONITOR) 1551 return IEEE80211_M_MONITOR; 1552 #ifdef IEEE80211_M_MBSS 1553 if (ifmr.ifm_current & IFM_IEEE80211_MBSS) 1554 return IEEE80211_M_MBSS; 1555 #endif /* IEEE80211_M_MBSS */ 1556 } 1557 return IEEE80211_M_STA; 1558 } 1559 1560 static void * 1561 wpa_driver_bsd_init(void *ctx, const char *ifname, void *priv) 1562 { 1563 #define GETPARAM(drv, param, v) \ 1564 (((v) = get80211param(drv, param)) != -1) 1565 struct bsd_driver_data *drv; 1566 1567 drv = os_zalloc(sizeof(*drv)); 1568 if (drv == NULL) 1569 return NULL; 1570 1571 /* 1572 * NB: We require the interface name be mappable to an index. 1573 * This implies we do not support having wpa_supplicant 1574 * wait for an interface to appear. This seems ok; that 1575 * doesn't belong here; it's really the job of devd. 1576 */ 1577 drv->ifindex = if_nametoindex(ifname); 1578 if (drv->ifindex == 0) { 1579 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist", 1580 __func__, ifname); 1581 goto fail; 1582 } 1583 1584 drv->ctx = ctx; 1585 drv->global = priv; 1586 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname)); 1587 1588 if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) { 1589 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s", 1590 __func__, strerror(errno)); 1591 goto fail; 1592 } 1593 if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) { 1594 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s", 1595 __func__, strerror(errno)); 1596 goto fail; 1597 } 1598 if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) { 1599 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s", 1600 __func__, strerror(errno)); 1601 goto fail; 1602 } 1603 1604 if (wpa_driver_bsd_capa(drv)) 1605 goto fail; 1606 1607 /* Down interface during setup. */ 1608 if (bsd_ctrl_iface(drv, 0) < 0) 1609 goto fail; 1610 1611 drv->opmode = get80211opmode(drv); 1612 dl_list_add(&drv->global->ifaces, &drv->list); 1613 1614 return drv; 1615 fail: 1616 os_free(drv); 1617 return NULL; 1618 #undef GETPARAM 1619 } 1620 1621 static void 1622 wpa_driver_bsd_deinit(void *priv) 1623 { 1624 struct bsd_driver_data *drv = priv; 1625 1626 if (drv->ifindex != 0 && !drv->if_removed) { 1627 wpa_driver_bsd_set_wpa(drv, 0); 1628 1629 /* NB: mark interface down */ 1630 bsd_ctrl_iface(drv, 0); 1631 1632 wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, 1633 drv->prev_privacy); 1634 1635 if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) 1636 < 0) 1637 wpa_printf(MSG_DEBUG, 1638 "%s: failed to restore roaming state", 1639 __func__); 1640 } 1641 1642 if (drv->sock_xmit != NULL) 1643 l2_packet_deinit(drv->sock_xmit); 1644 dl_list_del(&drv->list); 1645 os_free(drv); 1646 } 1647 1648 static int 1649 wpa_driver_bsd_get_capa(void *priv, struct wpa_driver_capa *capa) 1650 { 1651 struct bsd_driver_data *drv = priv; 1652 1653 os_memcpy(capa, &drv->capa, sizeof(*capa)); 1654 return 0; 1655 } 1656 #endif /* HOSTAPD */ 1657 1658 static void * 1659 bsd_global_init(void *ctx) 1660 { 1661 struct bsd_driver_global *global; 1662 1663 global = os_zalloc(sizeof(*global)); 1664 if (global == NULL) 1665 return NULL; 1666 1667 global->ctx = ctx; 1668 dl_list_init(&global->ifaces); 1669 1670 global->sock = socket(PF_INET, SOCK_DGRAM, 0); 1671 if (global->sock < 0) { 1672 wpa_printf(MSG_ERROR, "socket[PF_INET,SOCK_DGRAM]: %s", 1673 strerror(errno)); 1674 goto fail1; 1675 } 1676 1677 global->route = socket(PF_ROUTE, SOCK_RAW, 0); 1678 if (global->route < 0) { 1679 wpa_printf(MSG_ERROR, "socket[PF_ROUTE,SOCK_RAW]: %s", 1680 strerror(errno)); 1681 goto fail; 1682 } 1683 1684 global->event_buf_len = rtbuf_len(); 1685 global->event_buf = os_malloc(global->event_buf_len); 1686 if (global->event_buf == NULL) { 1687 wpa_printf(MSG_ERROR, "%s: os_malloc() failed", __func__); 1688 goto fail; 1689 } 1690 1691 #ifdef HOSTAPD 1692 eloop_register_read_sock(global->route, bsd_wireless_event_receive, 1693 NULL, global); 1694 1695 #else /* HOSTAPD */ 1696 eloop_register_read_sock(global->route, wpa_driver_bsd_event_receive, 1697 NULL, global); 1698 #endif /* HOSTAPD */ 1699 1700 return global; 1701 1702 fail: 1703 close(global->sock); 1704 fail1: 1705 os_free(global); 1706 return NULL; 1707 } 1708 1709 static void 1710 bsd_global_deinit(void *priv) 1711 { 1712 struct bsd_driver_global *global = priv; 1713 1714 eloop_unregister_read_sock(global->route); 1715 (void) close(global->route); 1716 (void) close(global->sock); 1717 os_free(global); 1718 } 1719 1720 1721 const struct wpa_driver_ops wpa_driver_bsd_ops = { 1722 .name = "bsd", 1723 .desc = "BSD 802.11 support", 1724 .global_init = bsd_global_init, 1725 .global_deinit = bsd_global_deinit, 1726 #ifdef HOSTAPD 1727 .hapd_init = bsd_init, 1728 .hapd_deinit = bsd_deinit, 1729 .set_privacy = bsd_set_privacy, 1730 .get_seqnum = bsd_get_seqnum, 1731 .flush = bsd_flush, 1732 .read_sta_data = bsd_read_sta_driver_data, 1733 .sta_disassoc = bsd_sta_disassoc, 1734 .sta_deauth = bsd_sta_deauth, 1735 .sta_set_flags = bsd_set_sta_authorized, 1736 .commit = bsd_commit, 1737 #else /* HOSTAPD */ 1738 .init2 = wpa_driver_bsd_init, 1739 .deinit = wpa_driver_bsd_deinit, 1740 .get_bssid = wpa_driver_bsd_get_bssid, 1741 .get_ssid = wpa_driver_bsd_get_ssid, 1742 .set_countermeasures = wpa_driver_bsd_set_countermeasures, 1743 .scan2 = wpa_driver_bsd_scan, 1744 .get_scan_results2 = wpa_driver_bsd_get_scan_results2, 1745 .deauthenticate = wpa_driver_bsd_deauthenticate, 1746 .associate = wpa_driver_bsd_associate, 1747 .get_capa = wpa_driver_bsd_get_capa, 1748 #endif /* HOSTAPD */ 1749 .set_freq = bsd_set_freq, 1750 .set_key = bsd_set_key, 1751 .set_ieee8021x = bsd_set_ieee8021x, 1752 .hapd_set_ssid = bsd_set_ssid, 1753 .hapd_get_ssid = bsd_get_ssid, 1754 .hapd_send_eapol = bsd_send_eapol, 1755 .set_generic_elem = bsd_set_opt_ie, 1756 }; 1757