1 /* 2 * Driver interaction with Linux Host AP driver 3 * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15 #include "includes.h" 16 #include <sys/ioctl.h> 17 18 #include "wireless_copy.h" 19 #include "common.h" 20 #include "driver.h" 21 #include "driver_wext.h" 22 #include "eloop.h" 23 #include "driver_hostap.h" 24 25 26 #ifdef HOSTAPD 27 28 #include <net/if_arp.h> 29 #include <netpacket/packet.h> 30 31 #include "priv_netlink.h" 32 #include "netlink.h" 33 #include "linux_ioctl.h" 34 #include "common/ieee802_11_defs.h" 35 #include "common/ieee802_11_common.h" 36 37 38 /* MTU to be set for the wlan#ap device; this is mainly needed for IEEE 802.1X 39 * frames that might be longer than normal default MTU and they are not 40 * fragmented */ 41 #define HOSTAPD_MTU 2290 42 43 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 44 45 struct hostap_driver_data { 46 struct hostapd_data *hapd; 47 48 char iface[IFNAMSIZ + 1]; 49 int sock; /* raw packet socket for driver access */ 50 int ioctl_sock; /* socket for ioctl() use */ 51 struct netlink_data *netlink; 52 53 int we_version; 54 55 u8 *generic_ie; 56 size_t generic_ie_len; 57 u8 *wps_ie; 58 size_t wps_ie_len; 59 }; 60 61 62 static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param, 63 int len); 64 static int hostap_set_iface_flags(void *priv, int dev_up); 65 66 static void handle_data(struct hostap_driver_data *drv, u8 *buf, size_t len, 67 u16 stype) 68 { 69 struct ieee80211_hdr *hdr; 70 u16 fc, ethertype; 71 u8 *pos, *sa; 72 size_t left; 73 union wpa_event_data event; 74 75 if (len < sizeof(struct ieee80211_hdr)) 76 return; 77 78 hdr = (struct ieee80211_hdr *) buf; 79 fc = le_to_host16(hdr->frame_control); 80 81 if ((fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) != WLAN_FC_TODS) { 82 printf("Not ToDS data frame (fc=0x%04x)\n", fc); 83 return; 84 } 85 86 sa = hdr->addr2; 87 os_memset(&event, 0, sizeof(event)); 88 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len); 89 event.rx_from_unknown.addr = sa; 90 wpa_supplicant_event(drv->hapd, EVENT_RX_FROM_UNKNOWN, &event); 91 92 pos = (u8 *) (hdr + 1); 93 left = len - sizeof(*hdr); 94 95 if (left < sizeof(rfc1042_header)) { 96 printf("Too short data frame\n"); 97 return; 98 } 99 100 if (memcmp(pos, rfc1042_header, sizeof(rfc1042_header)) != 0) { 101 printf("Data frame with no RFC1042 header\n"); 102 return; 103 } 104 pos += sizeof(rfc1042_header); 105 left -= sizeof(rfc1042_header); 106 107 if (left < 2) { 108 printf("No ethertype in data frame\n"); 109 return; 110 } 111 112 ethertype = WPA_GET_BE16(pos); 113 pos += 2; 114 left -= 2; 115 switch (ethertype) { 116 case ETH_P_PAE: 117 drv_event_eapol_rx(drv->hapd, sa, pos, left); 118 break; 119 120 default: 121 printf("Unknown ethertype 0x%04x in data frame\n", ethertype); 122 break; 123 } 124 } 125 126 127 static void handle_tx_callback(struct hostap_driver_data *drv, u8 *buf, 128 size_t len, int ok) 129 { 130 struct ieee80211_hdr *hdr; 131 u16 fc; 132 union wpa_event_data event; 133 134 hdr = (struct ieee80211_hdr *) buf; 135 fc = le_to_host16(hdr->frame_control); 136 137 os_memset(&event, 0, sizeof(event)); 138 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 139 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 140 event.tx_status.dst = hdr->addr1; 141 event.tx_status.data = buf; 142 event.tx_status.data_len = len; 143 event.tx_status.ack = ok; 144 wpa_supplicant_event(drv->hapd, EVENT_TX_STATUS, &event); 145 } 146 147 148 static void handle_frame(struct hostap_driver_data *drv, u8 *buf, size_t len) 149 { 150 struct ieee80211_hdr *hdr; 151 u16 fc, extra_len, type, stype; 152 size_t data_len = len; 153 int ver; 154 union wpa_event_data event; 155 156 /* PSPOLL is only 16 bytes, but driver does not (at least yet) pass 157 * these to user space */ 158 if (len < 24) { 159 wpa_printf(MSG_MSGDUMP, "handle_frame: too short (%lu)", 160 (unsigned long) len); 161 return; 162 } 163 164 hdr = (struct ieee80211_hdr *) buf; 165 fc = le_to_host16(hdr->frame_control); 166 type = WLAN_FC_GET_TYPE(fc); 167 stype = WLAN_FC_GET_STYPE(fc); 168 169 if (type != WLAN_FC_TYPE_MGMT || stype != WLAN_FC_STYPE_BEACON) { 170 wpa_hexdump(MSG_MSGDUMP, "Received management frame", 171 buf, len); 172 } 173 174 ver = fc & WLAN_FC_PVER; 175 176 /* protocol version 3 is reserved for indicating extra data after the 177 * payload, version 2 for indicating ACKed frame (TX callbacks), and 178 * version 1 for indicating failed frame (no ACK, TX callbacks) */ 179 if (ver == 3) { 180 u8 *pos = buf + len - 2; 181 extra_len = WPA_GET_LE16(pos); 182 printf("extra data in frame (elen=%d)\n", extra_len); 183 if ((size_t) extra_len + 2 > len) { 184 printf(" extra data overflow\n"); 185 return; 186 } 187 len -= extra_len + 2; 188 } else if (ver == 1 || ver == 2) { 189 handle_tx_callback(drv, buf, data_len, ver == 2 ? 1 : 0); 190 return; 191 } else if (ver != 0) { 192 printf("unknown protocol version %d\n", ver); 193 return; 194 } 195 196 switch (type) { 197 case WLAN_FC_TYPE_MGMT: 198 os_memset(&event, 0, sizeof(event)); 199 event.rx_mgmt.frame = buf; 200 event.rx_mgmt.frame_len = data_len; 201 wpa_supplicant_event(drv->hapd, EVENT_RX_MGMT, &event); 202 break; 203 case WLAN_FC_TYPE_CTRL: 204 wpa_printf(MSG_DEBUG, "CTRL"); 205 break; 206 case WLAN_FC_TYPE_DATA: 207 wpa_printf(MSG_DEBUG, "DATA"); 208 handle_data(drv, buf, data_len, stype); 209 break; 210 default: 211 wpa_printf(MSG_DEBUG, "unknown frame type %d", type); 212 break; 213 } 214 } 215 216 217 static void handle_read(int sock, void *eloop_ctx, void *sock_ctx) 218 { 219 struct hostap_driver_data *drv = eloop_ctx; 220 int len; 221 unsigned char buf[3000]; 222 223 len = recv(sock, buf, sizeof(buf), 0); 224 if (len < 0) { 225 perror("recv"); 226 return; 227 } 228 229 handle_frame(drv, buf, len); 230 } 231 232 233 static int hostap_init_sockets(struct hostap_driver_data *drv, u8 *own_addr) 234 { 235 struct ifreq ifr; 236 struct sockaddr_ll addr; 237 238 drv->sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 239 if (drv->sock < 0) { 240 perror("socket[PF_PACKET,SOCK_RAW]"); 241 return -1; 242 } 243 244 if (eloop_register_read_sock(drv->sock, handle_read, drv, NULL)) { 245 printf("Could not register read socket\n"); 246 return -1; 247 } 248 249 memset(&ifr, 0, sizeof(ifr)); 250 snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%sap", drv->iface); 251 if (ioctl(drv->sock, SIOCGIFINDEX, &ifr) != 0) { 252 perror("ioctl(SIOCGIFINDEX)"); 253 return -1; 254 } 255 256 if (hostap_set_iface_flags(drv, 1)) { 257 return -1; 258 } 259 260 memset(&addr, 0, sizeof(addr)); 261 addr.sll_family = AF_PACKET; 262 addr.sll_ifindex = ifr.ifr_ifindex; 263 wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d", 264 addr.sll_ifindex); 265 266 if (bind(drv->sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) { 267 perror("bind"); 268 return -1; 269 } 270 271 return linux_get_ifhwaddr(drv->sock, drv->iface, own_addr); 272 } 273 274 275 static int hostap_send_mlme(void *priv, const u8 *msg, size_t len) 276 { 277 struct hostap_driver_data *drv = priv; 278 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) msg; 279 int res; 280 281 /* Request TX callback */ 282 hdr->frame_control |= host_to_le16(BIT(1)); 283 res = send(drv->sock, msg, len, 0); 284 hdr->frame_control &= ~host_to_le16(BIT(1)); 285 286 return res; 287 } 288 289 290 static int hostap_send_eapol(void *priv, const u8 *addr, const u8 *data, 291 size_t data_len, int encrypt, const u8 *own_addr, 292 u32 flags) 293 { 294 struct hostap_driver_data *drv = priv; 295 struct ieee80211_hdr *hdr; 296 size_t len; 297 u8 *pos; 298 int res; 299 300 len = sizeof(*hdr) + sizeof(rfc1042_header) + 2 + data_len; 301 hdr = os_zalloc(len); 302 if (hdr == NULL) { 303 printf("malloc() failed for hostapd_send_data(len=%lu)\n", 304 (unsigned long) len); 305 return -1; 306 } 307 308 hdr->frame_control = 309 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 310 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 311 if (encrypt) 312 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 313 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 314 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 315 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 316 317 pos = (u8 *) (hdr + 1); 318 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 319 pos += sizeof(rfc1042_header); 320 *((u16 *) pos) = htons(ETH_P_PAE); 321 pos += 2; 322 memcpy(pos, data, data_len); 323 324 res = hostap_send_mlme(drv, (u8 *) hdr, len); 325 if (res < 0) { 326 wpa_printf(MSG_ERROR, "hostap_send_eapol - packet len: %lu - " 327 "failed: %d (%s)", 328 (unsigned long) len, errno, strerror(errno)); 329 } 330 free(hdr); 331 332 return res; 333 } 334 335 336 static int hostap_sta_set_flags(void *priv, const u8 *addr, 337 int total_flags, int flags_or, int flags_and) 338 { 339 struct hostap_driver_data *drv = priv; 340 struct prism2_hostapd_param param; 341 342 if (flags_or & WPA_STA_AUTHORIZED) 343 flags_or = BIT(5); /* WLAN_STA_AUTHORIZED */ 344 if (!(flags_and & WPA_STA_AUTHORIZED)) 345 flags_and = ~BIT(5); 346 else 347 flags_and = ~0; 348 memset(¶m, 0, sizeof(param)); 349 param.cmd = PRISM2_HOSTAPD_SET_FLAGS_STA; 350 memcpy(param.sta_addr, addr, ETH_ALEN); 351 param.u.set_flags_sta.flags_or = flags_or; 352 param.u.set_flags_sta.flags_and = flags_and; 353 return hostapd_ioctl(drv, ¶m, sizeof(param)); 354 } 355 356 357 static int hostap_set_iface_flags(void *priv, int dev_up) 358 { 359 struct hostap_driver_data *drv = priv; 360 struct ifreq ifr; 361 char ifname[IFNAMSIZ]; 362 363 os_snprintf(ifname, IFNAMSIZ, "%sap", drv->iface); 364 if (linux_set_iface_flags(drv->ioctl_sock, ifname, dev_up) < 0) 365 return -1; 366 367 if (dev_up) { 368 memset(&ifr, 0, sizeof(ifr)); 369 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); 370 ifr.ifr_mtu = HOSTAPD_MTU; 371 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) { 372 perror("ioctl[SIOCSIFMTU]"); 373 printf("Setting MTU failed - trying to survive with " 374 "current value\n"); 375 } 376 } 377 378 return 0; 379 } 380 381 382 static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param, 383 int len) 384 { 385 struct hostap_driver_data *drv = priv; 386 struct iwreq iwr; 387 388 memset(&iwr, 0, sizeof(iwr)); 389 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ); 390 iwr.u.data.pointer = (caddr_t) param; 391 iwr.u.data.length = len; 392 393 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) { 394 perror("ioctl[PRISM2_IOCTL_HOSTAPD]"); 395 return -1; 396 } 397 398 return 0; 399 } 400 401 402 static int wpa_driver_hostap_set_key(const char *ifname, void *priv, 403 enum wpa_alg alg, const u8 *addr, 404 int key_idx, int set_tx, 405 const u8 *seq, size_t seq_len, 406 const u8 *key, size_t key_len) 407 { 408 struct hostap_driver_data *drv = priv; 409 struct prism2_hostapd_param *param; 410 u8 *buf; 411 size_t blen; 412 int ret = 0; 413 414 blen = sizeof(*param) + key_len; 415 buf = os_zalloc(blen); 416 if (buf == NULL) 417 return -1; 418 419 param = (struct prism2_hostapd_param *) buf; 420 param->cmd = PRISM2_SET_ENCRYPTION; 421 if (addr == NULL) 422 memset(param->sta_addr, 0xff, ETH_ALEN); 423 else 424 memcpy(param->sta_addr, addr, ETH_ALEN); 425 switch (alg) { 426 case WPA_ALG_NONE: 427 os_strlcpy((char *) param->u.crypt.alg, "NONE", 428 HOSTAP_CRYPT_ALG_NAME_LEN); 429 break; 430 case WPA_ALG_WEP: 431 os_strlcpy((char *) param->u.crypt.alg, "WEP", 432 HOSTAP_CRYPT_ALG_NAME_LEN); 433 break; 434 case WPA_ALG_TKIP: 435 os_strlcpy((char *) param->u.crypt.alg, "TKIP", 436 HOSTAP_CRYPT_ALG_NAME_LEN); 437 break; 438 case WPA_ALG_CCMP: 439 os_strlcpy((char *) param->u.crypt.alg, "CCMP", 440 HOSTAP_CRYPT_ALG_NAME_LEN); 441 break; 442 default: 443 os_free(buf); 444 return -1; 445 } 446 param->u.crypt.flags = set_tx ? HOSTAP_CRYPT_FLAG_SET_TX_KEY : 0; 447 param->u.crypt.idx = key_idx; 448 param->u.crypt.key_len = key_len; 449 memcpy((u8 *) (param + 1), key, key_len); 450 451 if (hostapd_ioctl(drv, param, blen)) { 452 printf("Failed to set encryption.\n"); 453 ret = -1; 454 } 455 free(buf); 456 457 return ret; 458 } 459 460 461 static int hostap_get_seqnum(const char *ifname, void *priv, const u8 *addr, 462 int idx, u8 *seq) 463 { 464 struct hostap_driver_data *drv = priv; 465 struct prism2_hostapd_param *param; 466 u8 *buf; 467 size_t blen; 468 int ret = 0; 469 470 blen = sizeof(*param) + 32; 471 buf = os_zalloc(blen); 472 if (buf == NULL) 473 return -1; 474 475 param = (struct prism2_hostapd_param *) buf; 476 param->cmd = PRISM2_GET_ENCRYPTION; 477 if (addr == NULL) 478 memset(param->sta_addr, 0xff, ETH_ALEN); 479 else 480 memcpy(param->sta_addr, addr, ETH_ALEN); 481 param->u.crypt.idx = idx; 482 483 if (hostapd_ioctl(drv, param, blen)) { 484 printf("Failed to get encryption.\n"); 485 ret = -1; 486 } else { 487 memcpy(seq, param->u.crypt.seq, 8); 488 } 489 free(buf); 490 491 return ret; 492 } 493 494 495 static int hostap_ioctl_prism2param(void *priv, int param, int value) 496 { 497 struct hostap_driver_data *drv = priv; 498 struct iwreq iwr; 499 int *i; 500 501 memset(&iwr, 0, sizeof(iwr)); 502 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ); 503 i = (int *) iwr.u.name; 504 *i++ = param; 505 *i++ = value; 506 507 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr) < 0) { 508 perror("ioctl[PRISM2_IOCTL_PRISM2_PARAM]"); 509 return -1; 510 } 511 512 return 0; 513 } 514 515 516 static int hostap_set_ieee8021x(void *priv, struct wpa_bss_params *params) 517 { 518 struct hostap_driver_data *drv = priv; 519 int enabled = params->enabled; 520 521 /* enable kernel driver support for IEEE 802.1X */ 522 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_IEEE_802_1X, enabled)) { 523 printf("Could not setup IEEE 802.1X support in kernel driver." 524 "\n"); 525 return -1; 526 } 527 528 if (!enabled) 529 return 0; 530 531 /* use host driver implementation of encryption to allow 532 * individual keys and passing plaintext EAPOL frames */ 533 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_DECRYPT, 1) || 534 hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_ENCRYPT, 1)) { 535 printf("Could not setup host-based encryption in kernel " 536 "driver.\n"); 537 return -1; 538 } 539 540 return 0; 541 } 542 543 544 static int hostap_set_privacy(void *priv, int enabled) 545 { 546 struct hostap_drvier_data *drv = priv; 547 548 return hostap_ioctl_prism2param(drv, PRISM2_PARAM_PRIVACY_INVOKED, 549 enabled); 550 } 551 552 553 static int hostap_set_ssid(void *priv, const u8 *buf, int len) 554 { 555 struct hostap_driver_data *drv = priv; 556 struct iwreq iwr; 557 558 memset(&iwr, 0, sizeof(iwr)); 559 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ); 560 iwr.u.essid.flags = 1; /* SSID active */ 561 iwr.u.essid.pointer = (caddr_t) buf; 562 iwr.u.essid.length = len + 1; 563 564 if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) { 565 perror("ioctl[SIOCSIWESSID]"); 566 printf("len=%d\n", len); 567 return -1; 568 } 569 570 return 0; 571 } 572 573 574 static int hostap_flush(void *priv) 575 { 576 struct hostap_driver_data *drv = priv; 577 struct prism2_hostapd_param param; 578 579 memset(¶m, 0, sizeof(param)); 580 param.cmd = PRISM2_HOSTAPD_FLUSH; 581 return hostapd_ioctl(drv, ¶m, sizeof(param)); 582 } 583 584 585 static int hostap_read_sta_data(void *priv, 586 struct hostap_sta_driver_data *data, 587 const u8 *addr) 588 { 589 struct hostap_driver_data *drv = priv; 590 char buf[1024], line[128], *pos; 591 FILE *f; 592 unsigned long val; 593 594 memset(data, 0, sizeof(*data)); 595 snprintf(buf, sizeof(buf), "/proc/net/hostap/%s/" MACSTR, 596 drv->iface, MAC2STR(addr)); 597 598 f = fopen(buf, "r"); 599 if (!f) 600 return -1; 601 /* Need to read proc file with in one piece, so use large enough 602 * buffer. */ 603 setbuffer(f, buf, sizeof(buf)); 604 605 while (fgets(line, sizeof(line), f)) { 606 pos = strchr(line, '='); 607 if (!pos) 608 continue; 609 *pos++ = '\0'; 610 val = strtoul(pos, NULL, 10); 611 if (strcmp(line, "rx_packets") == 0) 612 data->rx_packets = val; 613 else if (strcmp(line, "tx_packets") == 0) 614 data->tx_packets = val; 615 else if (strcmp(line, "rx_bytes") == 0) 616 data->rx_bytes = val; 617 else if (strcmp(line, "tx_bytes") == 0) 618 data->tx_bytes = val; 619 } 620 621 fclose(f); 622 623 return 0; 624 } 625 626 627 static int hostap_sta_add(void *priv, struct hostapd_sta_add_params *params) 628 { 629 struct hostap_driver_data *drv = priv; 630 struct prism2_hostapd_param param; 631 int tx_supp_rates = 0; 632 size_t i; 633 634 #define WLAN_RATE_1M BIT(0) 635 #define WLAN_RATE_2M BIT(1) 636 #define WLAN_RATE_5M5 BIT(2) 637 #define WLAN_RATE_11M BIT(3) 638 639 for (i = 0; i < params->supp_rates_len; i++) { 640 if ((params->supp_rates[i] & 0x7f) == 2) 641 tx_supp_rates |= WLAN_RATE_1M; 642 if ((params->supp_rates[i] & 0x7f) == 4) 643 tx_supp_rates |= WLAN_RATE_2M; 644 if ((params->supp_rates[i] & 0x7f) == 11) 645 tx_supp_rates |= WLAN_RATE_5M5; 646 if ((params->supp_rates[i] & 0x7f) == 22) 647 tx_supp_rates |= WLAN_RATE_11M; 648 } 649 650 memset(¶m, 0, sizeof(param)); 651 param.cmd = PRISM2_HOSTAPD_ADD_STA; 652 memcpy(param.sta_addr, params->addr, ETH_ALEN); 653 param.u.add_sta.aid = params->aid; 654 param.u.add_sta.capability = params->capability; 655 param.u.add_sta.tx_supp_rates = tx_supp_rates; 656 return hostapd_ioctl(drv, ¶m, sizeof(param)); 657 } 658 659 660 static int hostap_sta_remove(void *priv, const u8 *addr) 661 { 662 struct hostap_driver_data *drv = priv; 663 struct prism2_hostapd_param param; 664 665 hostap_sta_set_flags(drv, addr, 0, 0, ~WPA_STA_AUTHORIZED); 666 667 memset(¶m, 0, sizeof(param)); 668 param.cmd = PRISM2_HOSTAPD_REMOVE_STA; 669 memcpy(param.sta_addr, addr, ETH_ALEN); 670 if (hostapd_ioctl(drv, ¶m, sizeof(param))) { 671 printf("Could not remove station from kernel driver.\n"); 672 return -1; 673 } 674 return 0; 675 } 676 677 678 static int hostap_get_inact_sec(void *priv, const u8 *addr) 679 { 680 struct hostap_driver_data *drv = priv; 681 struct prism2_hostapd_param param; 682 683 memset(¶m, 0, sizeof(param)); 684 param.cmd = PRISM2_HOSTAPD_GET_INFO_STA; 685 memcpy(param.sta_addr, addr, ETH_ALEN); 686 if (hostapd_ioctl(drv, ¶m, sizeof(param))) { 687 return -1; 688 } 689 690 return param.u.get_info_sta.inactive_sec; 691 } 692 693 694 static int hostap_sta_clear_stats(void *priv, const u8 *addr) 695 { 696 struct hostap_driver_data *drv = priv; 697 struct prism2_hostapd_param param; 698 699 memset(¶m, 0, sizeof(param)); 700 param.cmd = PRISM2_HOSTAPD_STA_CLEAR_STATS; 701 memcpy(param.sta_addr, addr, ETH_ALEN); 702 if (hostapd_ioctl(drv, ¶m, sizeof(param))) { 703 return -1; 704 } 705 706 return 0; 707 } 708 709 710 static int hostapd_ioctl_set_generic_elem(struct hostap_driver_data *drv) 711 { 712 struct prism2_hostapd_param *param; 713 int res; 714 size_t blen, elem_len; 715 716 elem_len = drv->generic_ie_len + drv->wps_ie_len; 717 blen = PRISM2_HOSTAPD_GENERIC_ELEMENT_HDR_LEN + elem_len; 718 if (blen < sizeof(*param)) 719 blen = sizeof(*param); 720 721 param = os_zalloc(blen); 722 if (param == NULL) 723 return -1; 724 725 param->cmd = PRISM2_HOSTAPD_SET_GENERIC_ELEMENT; 726 param->u.generic_elem.len = elem_len; 727 if (drv->generic_ie) { 728 os_memcpy(param->u.generic_elem.data, drv->generic_ie, 729 drv->generic_ie_len); 730 } 731 if (drv->wps_ie) { 732 os_memcpy(¶m->u.generic_elem.data[drv->generic_ie_len], 733 drv->wps_ie, drv->wps_ie_len); 734 } 735 wpa_hexdump(MSG_DEBUG, "hostap: Set generic IE", 736 param->u.generic_elem.data, elem_len); 737 res = hostapd_ioctl(drv, param, blen); 738 739 os_free(param); 740 741 return res; 742 } 743 744 745 static int hostap_set_generic_elem(void *priv, 746 const u8 *elem, size_t elem_len) 747 { 748 struct hostap_driver_data *drv = priv; 749 750 os_free(drv->generic_ie); 751 drv->generic_ie = NULL; 752 drv->generic_ie_len = 0; 753 if (elem) { 754 drv->generic_ie = os_malloc(elem_len); 755 if (drv->generic_ie == NULL) 756 return -1; 757 os_memcpy(drv->generic_ie, elem, elem_len); 758 drv->generic_ie_len = elem_len; 759 } 760 761 return hostapd_ioctl_set_generic_elem(drv); 762 } 763 764 765 static int hostap_set_ap_wps_ie(void *priv, const struct wpabuf *beacon, 766 const struct wpabuf *proberesp, 767 const struct wpabuf *assocresp) 768 { 769 struct hostap_driver_data *drv = priv; 770 771 /* 772 * Host AP driver supports only one set of extra IEs, so we need to 773 * use the Probe Response IEs also for Beacon frames since they include 774 * more information. 775 */ 776 777 os_free(drv->wps_ie); 778 drv->wps_ie = NULL; 779 drv->wps_ie_len = 0; 780 if (proberesp) { 781 drv->wps_ie = os_malloc(wpabuf_len(proberesp)); 782 if (drv->wps_ie == NULL) 783 return -1; 784 os_memcpy(drv->wps_ie, wpabuf_head(proberesp), 785 wpabuf_len(proberesp)); 786 drv->wps_ie_len = wpabuf_len(proberesp); 787 } 788 789 return hostapd_ioctl_set_generic_elem(drv); 790 } 791 792 793 static void 794 hostapd_wireless_event_wireless_custom(struct hostap_driver_data *drv, 795 char *custom) 796 { 797 wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom); 798 799 if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) { 800 char *pos; 801 u8 addr[ETH_ALEN]; 802 pos = strstr(custom, "addr="); 803 if (pos == NULL) { 804 wpa_printf(MSG_DEBUG, 805 "MLME-MICHAELMICFAILURE.indication " 806 "without sender address ignored"); 807 return; 808 } 809 pos += 5; 810 if (hwaddr_aton(pos, addr) == 0) { 811 union wpa_event_data data; 812 os_memset(&data, 0, sizeof(data)); 813 data.michael_mic_failure.unicast = 1; 814 data.michael_mic_failure.src = addr; 815 wpa_supplicant_event(drv->hapd, 816 EVENT_MICHAEL_MIC_FAILURE, &data); 817 } else { 818 wpa_printf(MSG_DEBUG, 819 "MLME-MICHAELMICFAILURE.indication " 820 "with invalid MAC address"); 821 } 822 } 823 } 824 825 826 static void hostapd_wireless_event_wireless(struct hostap_driver_data *drv, 827 char *data, int len) 828 { 829 struct iw_event iwe_buf, *iwe = &iwe_buf; 830 char *pos, *end, *custom, *buf; 831 832 pos = data; 833 end = data + len; 834 835 while (pos + IW_EV_LCP_LEN <= end) { 836 /* Event data may be unaligned, so make a local, aligned copy 837 * before processing. */ 838 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN); 839 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d", 840 iwe->cmd, iwe->len); 841 if (iwe->len <= IW_EV_LCP_LEN) 842 return; 843 844 custom = pos + IW_EV_POINT_LEN; 845 if (drv->we_version > 18 && 846 (iwe->cmd == IWEVMICHAELMICFAILURE || 847 iwe->cmd == IWEVCUSTOM)) { 848 /* WE-19 removed the pointer from struct iw_point */ 849 char *dpos = (char *) &iwe_buf.u.data.length; 850 int dlen = dpos - (char *) &iwe_buf; 851 memcpy(dpos, pos + IW_EV_LCP_LEN, 852 sizeof(struct iw_event) - dlen); 853 } else { 854 memcpy(&iwe_buf, pos, sizeof(struct iw_event)); 855 custom += IW_EV_POINT_OFF; 856 } 857 858 switch (iwe->cmd) { 859 case IWEVCUSTOM: 860 if (custom + iwe->u.data.length > end) 861 return; 862 buf = malloc(iwe->u.data.length + 1); 863 if (buf == NULL) 864 return; 865 memcpy(buf, custom, iwe->u.data.length); 866 buf[iwe->u.data.length] = '\0'; 867 hostapd_wireless_event_wireless_custom(drv, buf); 868 free(buf); 869 break; 870 } 871 872 pos += iwe->len; 873 } 874 } 875 876 877 static void hostapd_wireless_event_rtm_newlink(void *ctx, 878 struct ifinfomsg *ifi, 879 u8 *buf, size_t len) 880 { 881 struct hostap_driver_data *drv = ctx; 882 int attrlen, rta_len; 883 struct rtattr *attr; 884 885 /* TODO: use ifi->ifi_index to filter out wireless events from other 886 * interfaces */ 887 888 attrlen = len; 889 attr = (struct rtattr *) buf; 890 891 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 892 while (RTA_OK(attr, attrlen)) { 893 if (attr->rta_type == IFLA_WIRELESS) { 894 hostapd_wireless_event_wireless( 895 drv, ((char *) attr) + rta_len, 896 attr->rta_len - rta_len); 897 } 898 attr = RTA_NEXT(attr, attrlen); 899 } 900 } 901 902 903 static int hostap_get_we_version(struct hostap_driver_data *drv) 904 { 905 struct iw_range *range; 906 struct iwreq iwr; 907 int minlen; 908 size_t buflen; 909 910 drv->we_version = 0; 911 912 /* 913 * Use larger buffer than struct iw_range in order to allow the 914 * structure to grow in the future. 915 */ 916 buflen = sizeof(struct iw_range) + 500; 917 range = os_zalloc(buflen); 918 if (range == NULL) 919 return -1; 920 921 memset(&iwr, 0, sizeof(iwr)); 922 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ); 923 iwr.u.data.pointer = (caddr_t) range; 924 iwr.u.data.length = buflen; 925 926 minlen = ((char *) &range->enc_capa) - (char *) range + 927 sizeof(range->enc_capa); 928 929 if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) { 930 perror("ioctl[SIOCGIWRANGE]"); 931 free(range); 932 return -1; 933 } else if (iwr.u.data.length >= minlen && 934 range->we_version_compiled >= 18) { 935 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d " 936 "WE(source)=%d enc_capa=0x%x", 937 range->we_version_compiled, 938 range->we_version_source, 939 range->enc_capa); 940 drv->we_version = range->we_version_compiled; 941 } 942 943 free(range); 944 return 0; 945 } 946 947 948 static int hostap_wireless_event_init(struct hostap_driver_data *drv) 949 { 950 struct netlink_config *cfg; 951 952 hostap_get_we_version(drv); 953 954 cfg = os_zalloc(sizeof(*cfg)); 955 if (cfg == NULL) 956 return -1; 957 cfg->ctx = drv; 958 cfg->newlink_cb = hostapd_wireless_event_rtm_newlink; 959 drv->netlink = netlink_init(cfg); 960 if (drv->netlink == NULL) { 961 os_free(cfg); 962 return -1; 963 } 964 965 return 0; 966 } 967 968 969 static void * hostap_init(struct hostapd_data *hapd, 970 struct wpa_init_params *params) 971 { 972 struct hostap_driver_data *drv; 973 974 drv = os_zalloc(sizeof(struct hostap_driver_data)); 975 if (drv == NULL) { 976 printf("Could not allocate memory for hostapd driver data\n"); 977 return NULL; 978 } 979 980 drv->hapd = hapd; 981 drv->ioctl_sock = drv->sock = -1; 982 memcpy(drv->iface, params->ifname, sizeof(drv->iface)); 983 984 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 985 if (drv->ioctl_sock < 0) { 986 perror("socket[PF_INET,SOCK_DGRAM]"); 987 free(drv); 988 return NULL; 989 } 990 991 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 1)) { 992 printf("Could not enable hostapd mode for interface %s\n", 993 drv->iface); 994 close(drv->ioctl_sock); 995 free(drv); 996 return NULL; 997 } 998 999 if (hostap_init_sockets(drv, params->own_addr) || 1000 hostap_wireless_event_init(drv)) { 1001 close(drv->ioctl_sock); 1002 free(drv); 1003 return NULL; 1004 } 1005 1006 return drv; 1007 } 1008 1009 1010 static void hostap_driver_deinit(void *priv) 1011 { 1012 struct hostap_driver_data *drv = priv; 1013 1014 netlink_deinit(drv->netlink); 1015 (void) hostap_set_iface_flags(drv, 0); 1016 (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 0); 1017 (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD_STA, 0); 1018 1019 if (drv->ioctl_sock >= 0) 1020 close(drv->ioctl_sock); 1021 1022 if (drv->sock >= 0) 1023 close(drv->sock); 1024 1025 os_free(drv->generic_ie); 1026 os_free(drv->wps_ie); 1027 1028 free(drv); 1029 } 1030 1031 1032 static int hostap_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 1033 int reason) 1034 { 1035 struct hostap_driver_data *drv = priv; 1036 struct ieee80211_mgmt mgmt; 1037 1038 if (is_broadcast_ether_addr(addr)) { 1039 /* 1040 * New Prism2.5/3 STA firmware versions seem to have issues 1041 * with this broadcast deauth frame. This gets the firmware in 1042 * odd state where nothing works correctly, so let's skip 1043 * sending this for the hostap driver. 1044 */ 1045 return 0; 1046 } 1047 1048 memset(&mgmt, 0, sizeof(mgmt)); 1049 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 1050 WLAN_FC_STYPE_DEAUTH); 1051 memcpy(mgmt.da, addr, ETH_ALEN); 1052 memcpy(mgmt.sa, own_addr, ETH_ALEN); 1053 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 1054 mgmt.u.deauth.reason_code = host_to_le16(reason); 1055 return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN + 1056 sizeof(mgmt.u.deauth)); 1057 } 1058 1059 1060 static int hostap_set_freq(void *priv, struct hostapd_freq_params *freq) 1061 { 1062 struct hostap_driver_data *drv = priv; 1063 struct iwreq iwr; 1064 1065 os_memset(&iwr, 0, sizeof(iwr)); 1066 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ); 1067 iwr.u.freq.m = freq->channel; 1068 iwr.u.freq.e = 0; 1069 1070 if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) { 1071 perror("ioctl[SIOCSIWFREQ]"); 1072 return -1; 1073 } 1074 1075 return 0; 1076 } 1077 1078 1079 static int hostap_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 1080 int reason) 1081 { 1082 struct hostap_driver_data *drv = priv; 1083 struct ieee80211_mgmt mgmt; 1084 1085 memset(&mgmt, 0, sizeof(mgmt)); 1086 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 1087 WLAN_FC_STYPE_DISASSOC); 1088 memcpy(mgmt.da, addr, ETH_ALEN); 1089 memcpy(mgmt.sa, own_addr, ETH_ALEN); 1090 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 1091 mgmt.u.disassoc.reason_code = host_to_le16(reason); 1092 return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN + 1093 sizeof(mgmt.u.disassoc)); 1094 } 1095 1096 1097 static struct hostapd_hw_modes * hostap_get_hw_feature_data(void *priv, 1098 u16 *num_modes, 1099 u16 *flags) 1100 { 1101 struct hostapd_hw_modes *mode; 1102 int i, clen, rlen; 1103 const short chan2freq[14] = { 1104 2412, 2417, 2422, 2427, 2432, 2437, 2442, 1105 2447, 2452, 2457, 2462, 2467, 2472, 2484 1106 }; 1107 1108 mode = os_zalloc(sizeof(struct hostapd_hw_modes)); 1109 if (mode == NULL) 1110 return NULL; 1111 1112 *num_modes = 1; 1113 *flags = 0; 1114 1115 mode->mode = HOSTAPD_MODE_IEEE80211B; 1116 mode->num_channels = 14; 1117 mode->num_rates = 4; 1118 1119 clen = mode->num_channels * sizeof(struct hostapd_channel_data); 1120 rlen = mode->num_rates * sizeof(int); 1121 1122 mode->channels = os_zalloc(clen); 1123 mode->rates = os_zalloc(rlen); 1124 if (mode->channels == NULL || mode->rates == NULL) { 1125 os_free(mode->channels); 1126 os_free(mode->rates); 1127 os_free(mode); 1128 return NULL; 1129 } 1130 1131 for (i = 0; i < 14; i++) { 1132 mode->channels[i].chan = i + 1; 1133 mode->channels[i].freq = chan2freq[i]; 1134 /* TODO: Get allowed channel list from the driver */ 1135 if (i >= 11) 1136 mode->channels[i].flag = HOSTAPD_CHAN_DISABLED; 1137 } 1138 1139 mode->rates[0] = 10; 1140 mode->rates[1] = 20; 1141 mode->rates[2] = 55; 1142 mode->rates[3] = 110; 1143 1144 return mode; 1145 } 1146 1147 1148 static void wpa_driver_hostap_poll_client(void *priv, const u8 *own_addr, 1149 const u8 *addr, int qos) 1150 { 1151 struct ieee80211_hdr hdr; 1152 1153 os_memset(&hdr, 0, sizeof(hdr)); 1154 1155 /* 1156 * WLAN_FC_STYPE_NULLFUNC would be more appropriate, 1157 * but it is apparently not retried so TX Exc events 1158 * are not received for it. 1159 * This is the reason the driver overrides the default 1160 * handling. 1161 */ 1162 hdr.frame_control = IEEE80211_FC(WLAN_FC_TYPE_DATA, 1163 WLAN_FC_STYPE_DATA); 1164 1165 hdr.frame_control |= 1166 host_to_le16(WLAN_FC_FROMDS); 1167 os_memcpy(hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN); 1168 os_memcpy(hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 1169 os_memcpy(hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 1170 1171 hostap_send_mlme(priv, (u8 *)&hdr, sizeof(hdr)); 1172 } 1173 1174 #else /* HOSTAPD */ 1175 1176 struct wpa_driver_hostap_data { 1177 void *wext; /* private data for driver_wext */ 1178 void *ctx; 1179 char ifname[IFNAMSIZ + 1]; 1180 int sock; 1181 int current_mode; /* infra/adhoc */ 1182 }; 1183 1184 1185 static int wpa_driver_hostap_set_auth_alg(void *priv, int auth_alg); 1186 1187 1188 static int hostapd_ioctl(struct wpa_driver_hostap_data *drv, 1189 struct prism2_hostapd_param *param, 1190 int len, int show_err) 1191 { 1192 struct iwreq iwr; 1193 1194 os_memset(&iwr, 0, sizeof(iwr)); 1195 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); 1196 iwr.u.data.pointer = (caddr_t) param; 1197 iwr.u.data.length = len; 1198 1199 if (ioctl(drv->sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) { 1200 int ret = errno; 1201 if (show_err) 1202 perror("ioctl[PRISM2_IOCTL_HOSTAPD]"); 1203 return ret; 1204 } 1205 1206 return 0; 1207 } 1208 1209 1210 static int wpa_driver_hostap_set_wpa_ie(struct wpa_driver_hostap_data *drv, 1211 const u8 *wpa_ie, size_t wpa_ie_len) 1212 { 1213 struct prism2_hostapd_param *param; 1214 int res; 1215 size_t blen = PRISM2_HOSTAPD_GENERIC_ELEMENT_HDR_LEN + wpa_ie_len; 1216 if (blen < sizeof(*param)) 1217 blen = sizeof(*param); 1218 1219 param = os_zalloc(blen); 1220 if (param == NULL) 1221 return -1; 1222 1223 param->cmd = PRISM2_HOSTAPD_SET_GENERIC_ELEMENT; 1224 param->u.generic_elem.len = wpa_ie_len; 1225 os_memcpy(param->u.generic_elem.data, wpa_ie, wpa_ie_len); 1226 res = hostapd_ioctl(drv, param, blen, 1); 1227 1228 os_free(param); 1229 1230 return res; 1231 } 1232 1233 1234 static int prism2param(struct wpa_driver_hostap_data *drv, int param, 1235 int value) 1236 { 1237 struct iwreq iwr; 1238 int *i, ret = 0; 1239 1240 os_memset(&iwr, 0, sizeof(iwr)); 1241 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); 1242 i = (int *) iwr.u.name; 1243 *i++ = param; 1244 *i++ = value; 1245 1246 if (ioctl(drv->sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr) < 0) { 1247 perror("ioctl[PRISM2_IOCTL_PRISM2_PARAM]"); 1248 ret = -1; 1249 } 1250 return ret; 1251 } 1252 1253 1254 static int wpa_driver_hostap_set_wpa(void *priv, int enabled) 1255 { 1256 struct wpa_driver_hostap_data *drv = priv; 1257 int ret = 0; 1258 1259 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled); 1260 1261 if (!enabled && wpa_driver_hostap_set_wpa_ie(drv, NULL, 0) < 0) 1262 ret = -1; 1263 if (prism2param(drv, PRISM2_PARAM_HOST_ROAMING, enabled ? 2 : 0) < 0) 1264 ret = -1; 1265 if (prism2param(drv, PRISM2_PARAM_WPA, enabled) < 0) 1266 ret = -1; 1267 1268 return ret; 1269 } 1270 1271 1272 static void show_set_key_error(struct prism2_hostapd_param *param) 1273 { 1274 switch (param->u.crypt.err) { 1275 case HOSTAP_CRYPT_ERR_UNKNOWN_ALG: 1276 wpa_printf(MSG_INFO, "Unknown algorithm '%s'.", 1277 param->u.crypt.alg); 1278 wpa_printf(MSG_INFO, "You may need to load kernel module to " 1279 "register that algorithm."); 1280 wpa_printf(MSG_INFO, "E.g., 'modprobe hostap_crypt_wep' for " 1281 "WEP."); 1282 break; 1283 case HOSTAP_CRYPT_ERR_UNKNOWN_ADDR: 1284 wpa_printf(MSG_INFO, "Unknown address " MACSTR ".", 1285 MAC2STR(param->sta_addr)); 1286 break; 1287 case HOSTAP_CRYPT_ERR_CRYPT_INIT_FAILED: 1288 wpa_printf(MSG_INFO, "Crypt algorithm initialization failed."); 1289 break; 1290 case HOSTAP_CRYPT_ERR_KEY_SET_FAILED: 1291 wpa_printf(MSG_INFO, "Key setting failed."); 1292 break; 1293 case HOSTAP_CRYPT_ERR_TX_KEY_SET_FAILED: 1294 wpa_printf(MSG_INFO, "TX key index setting failed."); 1295 break; 1296 case HOSTAP_CRYPT_ERR_CARD_CONF_FAILED: 1297 wpa_printf(MSG_INFO, "Card configuration failed."); 1298 break; 1299 } 1300 } 1301 1302 1303 static int wpa_driver_hostap_set_key(const char *ifname, void *priv, 1304 enum wpa_alg alg, const u8 *addr, 1305 int key_idx, int set_tx, 1306 const u8 *seq, size_t seq_len, 1307 const u8 *key, size_t key_len) 1308 { 1309 struct wpa_driver_hostap_data *drv = priv; 1310 struct prism2_hostapd_param *param; 1311 u8 *buf; 1312 size_t blen; 1313 int ret = 0; 1314 char *alg_name; 1315 1316 switch (alg) { 1317 case WPA_ALG_NONE: 1318 alg_name = "none"; 1319 break; 1320 case WPA_ALG_WEP: 1321 alg_name = "WEP"; 1322 break; 1323 case WPA_ALG_TKIP: 1324 alg_name = "TKIP"; 1325 break; 1326 case WPA_ALG_CCMP: 1327 alg_name = "CCMP"; 1328 break; 1329 default: 1330 return -1; 1331 } 1332 1333 wpa_printf(MSG_DEBUG, "%s: alg=%s key_idx=%d set_tx=%d seq_len=%lu " 1334 "key_len=%lu", __FUNCTION__, alg_name, key_idx, set_tx, 1335 (unsigned long) seq_len, (unsigned long) key_len); 1336 1337 if (seq_len > 8) 1338 return -2; 1339 1340 blen = sizeof(*param) + key_len; 1341 buf = os_zalloc(blen); 1342 if (buf == NULL) 1343 return -1; 1344 1345 param = (struct prism2_hostapd_param *) buf; 1346 param->cmd = PRISM2_SET_ENCRYPTION; 1347 /* TODO: In theory, STA in client mode can use five keys; four default 1348 * keys for receiving (with keyidx 0..3) and one individual key for 1349 * both transmitting and receiving (keyidx 0) _unicast_ packets. Now, 1350 * keyidx 0 is reserved for this unicast use and default keys can only 1351 * use keyidx 1..3 (i.e., default key with keyidx 0 is not supported). 1352 * This should be fine for more or less all cases, but for completeness 1353 * sake, the driver could be enhanced to support the missing key. */ 1354 #if 0 1355 if (addr == NULL) 1356 os_memset(param->sta_addr, 0xff, ETH_ALEN); 1357 else 1358 os_memcpy(param->sta_addr, addr, ETH_ALEN); 1359 #else 1360 os_memset(param->sta_addr, 0xff, ETH_ALEN); 1361 #endif 1362 os_strlcpy((char *) param->u.crypt.alg, alg_name, 1363 HOSTAP_CRYPT_ALG_NAME_LEN); 1364 param->u.crypt.flags = set_tx ? HOSTAP_CRYPT_FLAG_SET_TX_KEY : 0; 1365 param->u.crypt.idx = key_idx; 1366 if (seq) 1367 os_memcpy(param->u.crypt.seq, seq, seq_len); 1368 param->u.crypt.key_len = key_len; 1369 os_memcpy((u8 *) (param + 1), key, key_len); 1370 1371 if (hostapd_ioctl(drv, param, blen, 1)) { 1372 wpa_printf(MSG_WARNING, "Failed to set encryption."); 1373 show_set_key_error(param); 1374 ret = -1; 1375 } 1376 os_free(buf); 1377 1378 return ret; 1379 } 1380 1381 1382 static int wpa_driver_hostap_set_countermeasures(void *priv, int enabled) 1383 { 1384 struct wpa_driver_hostap_data *drv = priv; 1385 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled); 1386 return prism2param(drv, PRISM2_PARAM_TKIP_COUNTERMEASURES, enabled); 1387 } 1388 1389 1390 static int wpa_driver_hostap_reset(struct wpa_driver_hostap_data *drv, 1391 int type) 1392 { 1393 struct iwreq iwr; 1394 int *i, ret = 0; 1395 1396 wpa_printf(MSG_DEBUG, "%s: type=%d", __FUNCTION__, type); 1397 1398 os_memset(&iwr, 0, sizeof(iwr)); 1399 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); 1400 i = (int *) iwr.u.name; 1401 *i++ = type; 1402 1403 if (ioctl(drv->sock, PRISM2_IOCTL_RESET, &iwr) < 0) { 1404 perror("ioctl[PRISM2_IOCTL_RESET]"); 1405 ret = -1; 1406 } 1407 return ret; 1408 } 1409 1410 1411 static int wpa_driver_hostap_mlme(struct wpa_driver_hostap_data *drv, 1412 const u8 *addr, int cmd, int reason_code) 1413 { 1414 struct prism2_hostapd_param param; 1415 int ret; 1416 1417 /* There does not seem to be a better way of deauthenticating or 1418 * disassociating with Prism2/2.5/3 than sending the management frame 1419 * and then resetting the Port0 to make sure both the AP and the STA 1420 * end up in disconnected state. */ 1421 os_memset(¶m, 0, sizeof(param)); 1422 param.cmd = PRISM2_HOSTAPD_MLME; 1423 os_memcpy(param.sta_addr, addr, ETH_ALEN); 1424 param.u.mlme.cmd = cmd; 1425 param.u.mlme.reason_code = reason_code; 1426 ret = hostapd_ioctl(drv, ¶m, sizeof(param), 1); 1427 if (ret == 0) { 1428 os_sleep(0, 100000); 1429 ret = wpa_driver_hostap_reset(drv, 2); 1430 } 1431 return ret; 1432 } 1433 1434 1435 static int wpa_driver_hostap_deauthenticate(void *priv, const u8 *addr, 1436 int reason_code) 1437 { 1438 struct wpa_driver_hostap_data *drv = priv; 1439 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); 1440 return wpa_driver_hostap_mlme(drv, addr, MLME_STA_DEAUTH, 1441 reason_code); 1442 } 1443 1444 1445 static int wpa_driver_hostap_disassociate(void *priv, const u8 *addr, 1446 int reason_code) 1447 { 1448 struct wpa_driver_hostap_data *drv = priv; 1449 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); 1450 return wpa_driver_hostap_mlme(drv, addr, MLME_STA_DISASSOC, 1451 reason_code); 1452 } 1453 1454 1455 static int 1456 wpa_driver_hostap_associate(void *priv, 1457 struct wpa_driver_associate_params *params) 1458 { 1459 struct wpa_driver_hostap_data *drv = priv; 1460 int ret = 0; 1461 int allow_unencrypted_eapol; 1462 1463 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); 1464 1465 if (prism2param(drv, PRISM2_PARAM_DROP_UNENCRYPTED, 1466 params->drop_unencrypted) < 0) 1467 ret = -1; 1468 if (wpa_driver_hostap_set_auth_alg(drv, params->auth_alg) < 0) 1469 ret = -1; 1470 if (params->mode != drv->current_mode) { 1471 /* At the moment, Host AP driver requires host_roaming=2 for 1472 * infrastructure mode and host_roaming=0 for adhoc. */ 1473 if (prism2param(drv, PRISM2_PARAM_HOST_ROAMING, 1474 params->mode == IEEE80211_MODE_IBSS ? 0 : 2) < 1475 0) { 1476 wpa_printf(MSG_DEBUG, "%s: failed to set host_roaming", 1477 __func__); 1478 } 1479 drv->current_mode = params->mode; 1480 } 1481 1482 if (prism2param(drv, PRISM2_PARAM_PRIVACY_INVOKED, 1483 params->key_mgmt_suite != KEY_MGMT_NONE) < 0) 1484 ret = -1; 1485 if (wpa_driver_hostap_set_wpa_ie(drv, params->wpa_ie, 1486 params->wpa_ie_len) < 0) 1487 ret = -1; 1488 if (wpa_driver_wext_set_mode(drv->wext, params->mode) < 0) 1489 ret = -1; 1490 if (params->freq && 1491 wpa_driver_wext_set_freq(drv->wext, params->freq) < 0) 1492 ret = -1; 1493 if (wpa_driver_wext_set_ssid(drv->wext, params->ssid, params->ssid_len) 1494 < 0) 1495 ret = -1; 1496 if (wpa_driver_wext_set_bssid(drv->wext, params->bssid) < 0) 1497 ret = -1; 1498 1499 /* Allow unencrypted EAPOL messages even if pairwise keys are set when 1500 * not using WPA. IEEE 802.1X specifies that these frames are not 1501 * encrypted, but WPA encrypts them when pairwise keys are in use. */ 1502 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 1503 params->key_mgmt_suite == KEY_MGMT_PSK) 1504 allow_unencrypted_eapol = 0; 1505 else 1506 allow_unencrypted_eapol = 1; 1507 1508 if (prism2param(drv, PRISM2_PARAM_IEEE_802_1X, 1509 allow_unencrypted_eapol) < 0) { 1510 wpa_printf(MSG_DEBUG, "hostap: Failed to configure " 1511 "ieee_802_1x param"); 1512 /* Ignore this error.. driver_hostap.c can also be used with 1513 * other drivers that do not support this prism2_param. */ 1514 } 1515 1516 return ret; 1517 } 1518 1519 1520 static int wpa_driver_hostap_scan(void *priv, 1521 struct wpa_driver_scan_params *params) 1522 { 1523 struct wpa_driver_hostap_data *drv = priv; 1524 struct prism2_hostapd_param param; 1525 int ret; 1526 const u8 *ssid = params->ssids[0].ssid; 1527 size_t ssid_len = params->ssids[0].ssid_len; 1528 1529 if (ssid == NULL) { 1530 /* Use standard Linux Wireless Extensions ioctl if possible 1531 * because some drivers using hostap code in wpa_supplicant 1532 * might not support Host AP specific scan request (with SSID 1533 * info). */ 1534 return wpa_driver_wext_scan(drv->wext, params); 1535 } 1536 1537 if (ssid_len > 32) 1538 ssid_len = 32; 1539 1540 os_memset(¶m, 0, sizeof(param)); 1541 param.cmd = PRISM2_HOSTAPD_SCAN_REQ; 1542 param.u.scan_req.ssid_len = ssid_len; 1543 os_memcpy(param.u.scan_req.ssid, ssid, ssid_len); 1544 ret = hostapd_ioctl(drv, ¶m, sizeof(param), 1); 1545 1546 /* Not all drivers generate "scan completed" wireless event, so try to 1547 * read results after a timeout. */ 1548 eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv->wext, 1549 drv->ctx); 1550 eloop_register_timeout(3, 0, wpa_driver_wext_scan_timeout, drv->wext, 1551 drv->ctx); 1552 1553 return ret; 1554 } 1555 1556 1557 static int wpa_driver_hostap_set_auth_alg(void *priv, int auth_alg) 1558 { 1559 struct wpa_driver_hostap_data *drv = priv; 1560 int algs = 0; 1561 1562 if (auth_alg & WPA_AUTH_ALG_OPEN) 1563 algs |= 1; 1564 if (auth_alg & WPA_AUTH_ALG_SHARED) 1565 algs |= 2; 1566 if (auth_alg & WPA_AUTH_ALG_LEAP) 1567 algs |= 4; 1568 if (algs == 0) 1569 algs = 1; /* at least one algorithm should be set */ 1570 1571 return prism2param(drv, PRISM2_PARAM_AP_AUTH_ALGS, algs); 1572 } 1573 1574 1575 static int wpa_driver_hostap_get_bssid(void *priv, u8 *bssid) 1576 { 1577 struct wpa_driver_hostap_data *drv = priv; 1578 return wpa_driver_wext_get_bssid(drv->wext, bssid); 1579 } 1580 1581 1582 static int wpa_driver_hostap_get_ssid(void *priv, u8 *ssid) 1583 { 1584 struct wpa_driver_hostap_data *drv = priv; 1585 return wpa_driver_wext_get_ssid(drv->wext, ssid); 1586 } 1587 1588 1589 static struct wpa_scan_results * wpa_driver_hostap_get_scan_results(void *priv) 1590 { 1591 struct wpa_driver_hostap_data *drv = priv; 1592 return wpa_driver_wext_get_scan_results(drv->wext); 1593 } 1594 1595 1596 static int wpa_driver_hostap_set_operstate(void *priv, int state) 1597 { 1598 struct wpa_driver_hostap_data *drv = priv; 1599 return wpa_driver_wext_set_operstate(drv->wext, state); 1600 } 1601 1602 1603 static void * wpa_driver_hostap_init(void *ctx, const char *ifname) 1604 { 1605 struct wpa_driver_hostap_data *drv; 1606 1607 drv = os_zalloc(sizeof(*drv)); 1608 if (drv == NULL) 1609 return NULL; 1610 drv->wext = wpa_driver_wext_init(ctx, ifname); 1611 if (drv->wext == NULL) { 1612 os_free(drv); 1613 return NULL; 1614 } 1615 1616 drv->ctx = ctx; 1617 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname)); 1618 drv->sock = socket(PF_INET, SOCK_DGRAM, 0); 1619 if (drv->sock < 0) { 1620 perror("socket"); 1621 wpa_driver_wext_deinit(drv->wext); 1622 os_free(drv); 1623 return NULL; 1624 } 1625 1626 if (os_strncmp(ifname, "wlan", 4) == 0) { 1627 /* 1628 * Host AP driver may use both wlan# and wifi# interface in 1629 * wireless events. 1630 */ 1631 char ifname2[IFNAMSIZ + 1]; 1632 os_strlcpy(ifname2, ifname, sizeof(ifname2)); 1633 os_memcpy(ifname2, "wifi", 4); 1634 wpa_driver_wext_alternative_ifindex(drv->wext, ifname2); 1635 } 1636 1637 wpa_driver_hostap_set_wpa(drv, 1); 1638 1639 return drv; 1640 } 1641 1642 1643 static void wpa_driver_hostap_deinit(void *priv) 1644 { 1645 struct wpa_driver_hostap_data *drv = priv; 1646 wpa_driver_hostap_set_wpa(drv, 0); 1647 wpa_driver_wext_deinit(drv->wext); 1648 close(drv->sock); 1649 os_free(drv); 1650 } 1651 1652 #endif /* HOSTAPD */ 1653 1654 1655 const struct wpa_driver_ops wpa_driver_hostap_ops = { 1656 .name = "hostap", 1657 .desc = "Host AP driver (Intersil Prism2/2.5/3)", 1658 .set_key = wpa_driver_hostap_set_key, 1659 #ifdef HOSTAPD 1660 .hapd_init = hostap_init, 1661 .hapd_deinit = hostap_driver_deinit, 1662 .set_ieee8021x = hostap_set_ieee8021x, 1663 .set_privacy = hostap_set_privacy, 1664 .get_seqnum = hostap_get_seqnum, 1665 .flush = hostap_flush, 1666 .set_generic_elem = hostap_set_generic_elem, 1667 .read_sta_data = hostap_read_sta_data, 1668 .hapd_send_eapol = hostap_send_eapol, 1669 .sta_set_flags = hostap_sta_set_flags, 1670 .sta_deauth = hostap_sta_deauth, 1671 .sta_disassoc = hostap_sta_disassoc, 1672 .sta_remove = hostap_sta_remove, 1673 .hapd_set_ssid = hostap_set_ssid, 1674 .send_mlme = hostap_send_mlme, 1675 .sta_add = hostap_sta_add, 1676 .get_inact_sec = hostap_get_inact_sec, 1677 .sta_clear_stats = hostap_sta_clear_stats, 1678 .get_hw_feature_data = hostap_get_hw_feature_data, 1679 .set_ap_wps_ie = hostap_set_ap_wps_ie, 1680 .set_freq = hostap_set_freq, 1681 .poll_client = wpa_driver_hostap_poll_client, 1682 #else /* HOSTAPD */ 1683 .get_bssid = wpa_driver_hostap_get_bssid, 1684 .get_ssid = wpa_driver_hostap_get_ssid, 1685 .set_countermeasures = wpa_driver_hostap_set_countermeasures, 1686 .scan2 = wpa_driver_hostap_scan, 1687 .get_scan_results2 = wpa_driver_hostap_get_scan_results, 1688 .deauthenticate = wpa_driver_hostap_deauthenticate, 1689 .disassociate = wpa_driver_hostap_disassociate, 1690 .associate = wpa_driver_hostap_associate, 1691 .init = wpa_driver_hostap_init, 1692 .deinit = wpa_driver_hostap_deinit, 1693 .set_operstate = wpa_driver_hostap_set_operstate, 1694 #endif /* HOSTAPD */ 1695 }; 1696