src/drivers/driver_bsd.c

   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 program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Alternatively, this software may be distributed under the terms of BSD
  11  * license.
  12  *
  13  * See README and COPYING for more details.
  14  */
  15
  16 #include "includes.h"
  17 #include <sys/ioctl.h>
  18
  19 #include "common.h"
  20 #include "driver.h"
  21 #include "eloop.h"
  22 #include "common/ieee802_11_defs.h"
  23
  24 #include <net/if.h>
  25
  26 #ifdef __NetBSD__
  27 #include <net/if_ether.h>
  28 #else
  29 #include <net/ethernet.h>
  30 #endif
  31 #include <net/route.h>
  32
  33 #ifdef __DragonFly__
  34 #include <netproto/802_11/ieee80211_ioctl.h>
  35 #include <netproto/802_11/ieee80211_dragonfly.h>
  36 #else /* __DragonFly__ */
  37 #include <net80211/ieee80211.h>
  38 #include <net80211/ieee80211_ioctl.h>
  39 #include <net80211/ieee80211_crypto.h>
  40 #endif /* __DragonFly__ */
  41 #if __FreeBSD__
  42 #include <net80211/ieee80211_freebsd.h>
  43 #endif
  44 #if __NetBSD__
  45 #include <net80211/ieee80211_netbsd.h>
  46 #endif
  47
  48 /* Generic functions for hostapd and wpa_supplicant */
  49
  50 static int
  51 bsd_set80211var(int s, const char *ifname, int op, const void *arg, int arg_len)
  52 {
  53         struct ieee80211req ireq;
  54
  55         os_memset(&ireq, 0, sizeof(ireq));
  56         os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
  57         ireq.i_type = op;
  58         ireq.i_len = arg_len;
  59         ireq.i_data = (void *) arg;
  60
  61         if (ioctl(s, SIOCS80211, &ireq) < 0) {
  62                 fprintf(stderr, "ioctl[SIOCS80211, op %u, len %u]: %s\n",
  63                         op, arg_len, strerror(errno));
  64                 return -1;
  65         }
  66         return 0;
  67 }
  68
  69 static int
  70 bsd_get80211var(int s, const char *ifname, int op, void *arg, int arg_len)
  71 {
  72         struct ieee80211req ireq;
  73
  74         os_memset(&ireq, 0, sizeof(ireq));
  75         os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
  76         ireq.i_type = op;
  77         ireq.i_len = arg_len;
  78         ireq.i_data = arg;
  79
  80         if (ioctl(s, SIOCG80211, &ireq) < 0) {
  81                 fprintf(stderr, "ioctl[SIOCG80211, op %u, len %u]: %s\n",
  82                         op, arg_len, strerror(errno));
  83                 return -1;
  84         }
  85         return ireq.i_len;
  86 }
  87
  88 static int
  89 bsd_set80211param(int s, const char *ifname, int op, int arg)
  90 {
  91         struct ieee80211req ireq;
  92
  93         os_memset(&ireq, 0, sizeof(ireq));
  94         os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
  95         ireq.i_type = op;
  96         ireq.i_val = arg;
  97
  98         if (ioctl(s, SIOCS80211, &ireq) < 0) {
  99                 fprintf(stderr, "ioctl[SIOCS80211, op %u, arg 0x%x]: %s\n",
 100                         op, arg, strerror(errno));
 101                 return -1;
 102         }
 103         return 0;
 104 }
 105
 106 static int
 107 bsd_get_ssid(int s, const char *ifname, u8 *ssid)
 108 {
 109 #ifdef SIOCG80211NWID
 110         struct ieee80211_nwid nwid;
 111         struct ifreq ifr;
 112
 113         os_memset(&ifr, 0, sizeof(ifr));
 114         os_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
 115         ifr.ifr_data = (void *)&nwid;
 116         if (ioctl(s, SIOCG80211NWID, &ifr) < 0 ||
 117             nwid.i_len > IEEE80211_NWID_LEN)
 118                 return -1;
 119         os_memcpy(ssid, nwid.i_nwid, nwid.i_len);
 120         return nwid.i_len;
 121 #else
 122         return bsd_get80211var(s, ifname, IEEE80211_IOC_SSID,
 123                 ssid, IEEE80211_NWID_LEN);
 124 #endif
 125 }
 126
 127 static int
 128 bsd_set_ssid(int s, const char *ifname, const u8 *ssid, size_t ssid_len)
 129 {
 130 #ifdef SIOCS80211NWID
 131         struct ieee80211_nwid nwid;
 132         struct ifreq ifr;
 133
 134         os_memcpy(nwid.i_nwid, ssid, ssid_len);
 135         nwid.i_len = ssid_len;
 136         os_memset(&ifr, 0, sizeof(ifr));
 137         os_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
 138         ifr.ifr_data = (void *)&nwid;
 139         return ioctl(s, SIOCS80211NWID, &ifr);
 140 #else
 141         return bsd_set80211var(s, ifname, IEEE80211_IOC_SSID, ssid, ssid_len);
 142 #endif
 143 }
 144
 145
 146 #ifdef HOSTAPD
 147
 148 /*
 149  * Avoid conflicts with hostapd definitions by undefining couple of defines
 150  * from net80211 header files.
 151  */
 152 #undef RSN_VERSION
 153 #undef WPA_VERSION
 154 #undef WPA_OUI_TYPE
 155
 156 #include "l2_packet/l2_packet.h"
 157
 158 struct bsd_driver_data {
 159         struct hostapd_data *hapd;              /* back pointer */
 160
 161         char    iface[IFNAMSIZ + 1];
 162         struct l2_packet_data *sock_xmit;       /* raw packet xmit socket */
 163         int     ioctl_sock;                     /* socket for ioctl() use */
 164         int     wext_sock;                      /* socket for wireless events */
 165 };
 166
 167 static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
 168                           int reason_code);
 169
 170 static int
 171 set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
 172 {
 173         return bsd_set80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
 174 }
 175
 176 static int
 177 get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
 178 {
 179         return bsd_get80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
 180 }
 181
 182 static int
 183 set80211param(struct bsd_driver_data *drv, int op, int arg)
 184 {
 185         return bsd_set80211param(drv->ioctl_sock, drv->iface, op, arg);
 186 }
 187
 188 static const char *
 189 ether_sprintf(const u8 *addr)
 190 {
 191         static char buf[sizeof(MACSTR)];
 192
 193         if (addr != NULL)
 194                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 195         else
 196                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 197         return buf;
 198 }
 199
 200 /*
 201  * Configure WPA parameters.
 202  */
 203 static int
 204 bsd_configure_wpa(struct bsd_driver_data *drv, struct wpa_bss_params *params)
 205 {
 206         static const char *ciphernames[] =
 207                 { "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
 208         int v;
 209
 210         switch (params->wpa_group) {
 211         case WPA_CIPHER_CCMP:
 212                 v = IEEE80211_CIPHER_AES_CCM;
 213                 break;
 214         case WPA_CIPHER_TKIP:
 215                 v = IEEE80211_CIPHER_TKIP;
 216                 break;
 217         case WPA_CIPHER_WEP104:
 218                 v = IEEE80211_CIPHER_WEP;
 219                 break;
 220         case WPA_CIPHER_WEP40:
 221                 v = IEEE80211_CIPHER_WEP;
 222                 break;
 223         case WPA_CIPHER_NONE:
 224                 v = IEEE80211_CIPHER_NONE;
 225                 break;
 226         default:
 227                 printf("Unknown group key cipher %u\n",
 228                         params->wpa_group);
 229                 return -1;
 230         }
 231         wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
 232                    __func__, ciphernames[v], v);
 233         if (set80211param(drv, IEEE80211_IOC_MCASTCIPHER, v)) {
 234                 printf("Unable to set group key cipher to %u (%s)\n",
 235                         v, ciphernames[v]);
 236                 return -1;
 237         }
 238         if (v == IEEE80211_CIPHER_WEP) {
 239                 /* key length is done only for specific ciphers */
 240                 v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 241                 if (set80211param(drv, IEEE80211_IOC_MCASTKEYLEN, v)) {
 242                         printf("Unable to set group key length to %u\n", v);
 243                         return -1;
 244                 }
 245         }
 246
 247         v = 0;
 248         if (params->wpa_pairwise & WPA_CIPHER_CCMP)
 249                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 250         if (params->wpa_pairwise & WPA_CIPHER_TKIP)
 251                 v |= 1<<IEEE80211_CIPHER_TKIP;
 252         if (params->wpa_pairwise & WPA_CIPHER_NONE)
 253                 v |= 1<<IEEE80211_CIPHER_NONE;
 254         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 255         if (set80211param(drv, IEEE80211_IOC_UCASTCIPHERS, v)) {
 256                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 257                 return -1;
 258         }
 259
 260         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 261                    __func__, params->wpa_key_mgmt);
 262         if (set80211param(drv, IEEE80211_IOC_KEYMGTALGS, params->wpa_key_mgmt))
 263         {
 264                 printf("Unable to set key management algorithms to 0x%x\n",
 265                         params->wpa_key_mgmt);
 266                 return -1;
 267         }
 268
 269         v = 0;
 270         if (params->rsn_preauth)
 271                 v |= BIT(0);
 272         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 273                    __func__, params->rsn_preauth);
 274         if (set80211param(drv, IEEE80211_IOC_RSNCAPS, v)) {
 275                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 276                 return -1;
 277         }
 278
 279         wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, params->wpa);
 280         if (set80211param(drv, IEEE80211_IOC_WPA, params->wpa)) {
 281                 printf("Unable to set WPA to %u\n", params->wpa);
 282                 return -1;
 283         }
 284         return 0;
 285 }
 286
 287
 288 static int
 289 bsd_set_iface_flags(void *priv, int dev_up)
 290 {
 291         struct bsd_driver_data *drv = priv;
 292         struct ifreq ifr;
 293
 294         wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
 295
 296         if (drv->ioctl_sock < 0)
 297                 return -1;
 298
 299         memset(&ifr, 0, sizeof(ifr));
 300         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
 301
 302         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 303                 perror("ioctl[SIOCGIFFLAGS]");
 304                 return -1;
 305         }
 306
 307         if (dev_up)
 308                 ifr.ifr_flags |= IFF_UP;
 309         else
 310                 ifr.ifr_flags &= ~IFF_UP;
 311
 312         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 313                 perror("ioctl[SIOCSIFFLAGS]");
 314                 return -1;
 315         }
 316
 317         return 0;
 318 }
 319
 320 static int
 321 bsd_set_ieee8021x(void *priv, struct wpa_bss_params *params)
 322 {
 323         struct bsd_driver_data *drv = priv;
 324
 325         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);
 326
 327         if (!params->enabled) {
 328                 /* XXX restore state */
 329                 return set80211param(priv, IEEE80211_IOC_AUTHMODE,
 330                         IEEE80211_AUTH_AUTO);
 331         }
 332         if (!params->wpa && !params->ieee802_1x) {
 333                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 334                         HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
 335                 return -1;
 336         }
 337         if (params->wpa && bsd_configure_wpa(drv, params) != 0) {
 338                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 339                         HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
 340                 return -1;
 341         }
 342         if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
 343                 (params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 344                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 345                         HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
 346                 return -1;
 347         }
 348         return bsd_set_iface_flags(priv, 1);
 349 }
 350
 351 static int
 352 bsd_set_privacy(const char *ifname, void *priv, int enabled)
 353 {
 354         struct bsd_driver_data *drv = priv;
 355
 356         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 357
 358         return set80211param(drv, IEEE80211_IOC_PRIVACY, enabled);
 359 }
 360
 361 static int
 362 bsd_set_sta_authorized(void *priv, const u8 *addr, int authorized)
 363 {
 364         struct bsd_driver_data *drv = priv;
 365         struct ieee80211req_mlme mlme;
 366
 367         wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
 368                    __func__, ether_sprintf(addr), authorized);
 369
 370         if (authorized)
 371                 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
 372         else
 373                 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
 374         mlme.im_reason = 0;
 375         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 376         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
 377 }
 378
 379 static int
 380 bsd_sta_set_flags(void *priv, const u8 *addr, int total_flags, int flags_or,
 381                   int flags_and)
 382 {
 383         /* For now, only support setting Authorized flag */
 384         if (flags_or & WPA_STA_AUTHORIZED)
 385                 return bsd_set_sta_authorized(priv, addr, 1);
 386         if (!(flags_and & WPA_STA_AUTHORIZED))
 387                 return bsd_set_sta_authorized(priv, addr, 0);
 388         return 0;
 389 }
 390
 391 static int
 392 bsd_del_key(void *priv, const u8 *addr, int key_idx)
 393 {
 394         struct bsd_driver_data *drv = priv;
 395         struct ieee80211req_del_key wk;
 396
 397         wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
 398                    __func__, ether_sprintf(addr), key_idx);
 399
 400         memset(&wk, 0, sizeof(wk));
 401         if (addr != NULL) {
 402                 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 403                 wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */
 404         } else {
 405                 wk.idk_keyix = key_idx;
 406         }
 407
 408         return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
 409 }
 410
 411 static int
 412 bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
 413             const u8 *addr, int key_idx, int set_tx, const u8 *seq,
 414             size_t seq_len, const u8 *key, size_t key_len)
 415 {
 416         struct bsd_driver_data *drv = priv;
 417         struct ieee80211req_key wk;
 418         u_int8_t cipher;
 419
 420         if (alg == WPA_ALG_NONE)
 421                 return bsd_del_key(drv, addr, key_idx);
 422
 423         wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
 424                    __func__, alg, ether_sprintf(addr), key_idx);
 425
 426         if (alg == WPA_ALG_WEP)
 427                 cipher = IEEE80211_CIPHER_WEP;
 428         else if (alg == WPA_ALG_TKIP)
 429                 cipher = IEEE80211_CIPHER_TKIP;
 430         else if (alg == WPA_ALG_CCMP)
 431                 cipher = IEEE80211_CIPHER_AES_CCM;
 432         else {
 433                 printf("%s: unknown/unsupported algorithm %d\n",
 434                         __func__, alg);
 435                 return -1;
 436         }
 437
 438         if (key_len > sizeof(wk.ik_keydata)) {
 439                 printf("%s: key length %d too big\n", __func__, (int) key_len);
 440                 return -3;
 441         }
 442
 443         memset(&wk, 0, sizeof(wk));
 444         wk.ik_type = cipher;
 445         wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
 446         if (addr == NULL) {
 447                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 448                 wk.ik_keyix = key_idx;
 449                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 450         } else {
 451                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 452                 wk.ik_keyix = IEEE80211_KEYIX_NONE;
 453         }
 454         wk.ik_keylen = key_len;
 455         memcpy(wk.ik_keydata, key, key_len);
 456
 457         return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
 458 }
 459
 460
 461 static int
 462 bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 463                u8 *seq)
 464 {
 465         struct bsd_driver_data *drv = priv;
 466         struct ieee80211req_key wk;
 467
 468         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 469                    __func__, ether_sprintf(addr), idx);
 470
 471         memset(&wk, 0, sizeof(wk));
 472         if (addr == NULL)
 473                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 474         else
 475                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 476         wk.ik_keyix = idx;
 477
 478         if (get80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
 479                 printf("Failed to get encryption.\n");
 480                 return -1;
 481         }
 482
 483 #ifdef WORDS_BIGENDIAN
 484         {
 485                 /*
 486                  * wk.ik_keytsc is in host byte order (big endian), need to
 487                  * swap it to match with the byte order used in WPA.
 488                  */
 489                 int i;
 490                 u8 tmp[WPA_KEY_RSC_LEN];
 491                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 492                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 493                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 494                 }
 495         }
 496 #else /* WORDS_BIGENDIAN */
 497         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 498 #endif /* WORDS_BIGENDIAN */
 499         return 0;
 500 }
 501
 502
 503 static int
 504 bsd_flush(void *priv)
 505 {
 506         u8 allsta[IEEE80211_ADDR_LEN];
 507
 508         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 509         return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
 510 }
 511
 512
 513 static int
 514 bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 515                          const u8 *addr)
 516 {
 517         struct bsd_driver_data *drv = priv;
 518         struct ieee80211req_sta_stats stats;
 519
 520         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 521         if (get80211var(drv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats)) > 0) {
 522                 /* XXX? do packets counts include non-data frames? */
 523                 data->rx_packets = stats.is_stats.ns_rx_data;
 524                 data->rx_bytes = stats.is_stats.ns_rx_bytes;
 525                 data->tx_packets = stats.is_stats.ns_tx_data;
 526                 data->tx_bytes = stats.is_stats.ns_tx_bytes;
 527         }
 528         return 0;
 529 }
 530
 531 static int
 532 bsd_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
 533 {
 534         /*
 535          * Do nothing; we setup parameters at startup that define the
 536          * contents of the beacon information element.
 537          */
 538         return 0;
 539 }
 540
 541 static int
 542 bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
 543 {
 544         struct bsd_driver_data *drv = priv;
 545         struct ieee80211req_mlme mlme;
 546
 547         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 548                    __func__, ether_sprintf(addr), reason_code);
 549
 550         mlme.im_op = IEEE80211_MLME_DEAUTH;
 551         mlme.im_reason = reason_code;
 552         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 553         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
 554 }
 555
 556 static int
 557 bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
 558                  int reason_code)
 559 {
 560         struct bsd_driver_data *drv = priv;
 561         struct ieee80211req_mlme mlme;
 562
 563         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 564                    __func__, ether_sprintf(addr), reason_code);
 565
 566         mlme.im_op = IEEE80211_MLME_DISASSOC;
 567         mlme.im_reason = reason_code;
 568         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 569         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
 570 }
 571
 572 static void
 573 bsd_new_sta(struct bsd_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
 574 {
 575         struct hostapd_data *hapd = drv->hapd;
 576         struct ieee80211req_wpaie ie;
 577         int ielen = 0;
 578         u8 *iebuf = NULL;
 579
 580         /*
 581          * Fetch and validate any negotiated WPA/RSN parameters.
 582          */
 583         memset(&ie, 0, sizeof(ie));
 584         memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
 585         if (get80211var(drv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
 586                 printf("Failed to get WPA/RSN information element.\n");
 587                 goto no_ie;
 588         }
 589         iebuf = ie.wpa_ie;
 590         ielen = ie.wpa_ie[1];
 591         if (ielen == 0)
 592                 iebuf = NULL;
 593         else
 594                 ielen += 2;
 595
 596 no_ie:
 597         drv_event_assoc(hapd, addr, iebuf, ielen);
 598 }
 599
 600 static void
 601 bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
 602 {
 603         struct bsd_driver_data *drv = ctx;
 604         char buf[2048];
 605         struct if_announcemsghdr *ifan;
 606         struct rt_msghdr *rtm;
 607         struct ieee80211_michael_event *mic;
 608         struct ieee80211_join_event *join;
 609         struct ieee80211_leave_event *leave;
 610         int n;
 611         union wpa_event_data data;
 612
 613         n = read(sock, buf, sizeof(buf));
 614         if (n < 0) {
 615                 if (errno != EINTR && errno != EAGAIN)
 616                         perror("read(PF_ROUTE)");
 617                 return;
 618         }
 619
 620         rtm = (struct rt_msghdr *) buf;
 621         if (rtm->rtm_version != RTM_VERSION) {
 622                 wpa_printf(MSG_DEBUG, "Routing message version %d not "
 623                         "understood\n", rtm->rtm_version);
 624                 return;
 625         }
 626         ifan = (struct if_announcemsghdr *) rtm;
 627         switch (rtm->rtm_type) {
 628         case RTM_IEEE80211:
 629                 switch (ifan->ifan_what) {
 630                 case RTM_IEEE80211_ASSOC:
 631                 case RTM_IEEE80211_REASSOC:
 632                 case RTM_IEEE80211_DISASSOC:
 633                 case RTM_IEEE80211_SCAN:
 634                         break;
 635                 case RTM_IEEE80211_LEAVE:
 636                         leave = (struct ieee80211_leave_event *) &ifan[1];
 637                         drv_event_disassoc(drv->hapd, leave->iev_addr);
 638                         break;
 639                 case RTM_IEEE80211_JOIN:
 640 #ifdef RTM_IEEE80211_REJOIN
 641                 case RTM_IEEE80211_REJOIN:
 642 #endif
 643                         join = (struct ieee80211_join_event *) &ifan[1];
 644                         bsd_new_sta(drv, join->iev_addr);
 645                         break;
 646                 case RTM_IEEE80211_REPLAY:
 647                         /* ignore */
 648                         break;
 649                 case RTM_IEEE80211_MICHAEL:
 650                         mic = (struct ieee80211_michael_event *) &ifan[1];
 651                         wpa_printf(MSG_DEBUG,
 652                                 "Michael MIC failure wireless event: "
 653                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
 654                                 MAC2STR(mic->iev_src));
 655                         os_memset(&data, 0, sizeof(data));
 656                         data.michael_mic_failure.unicast = 1;
 657                         data.michael_mic_failure.src = mic->iev_src;
 658                         wpa_supplicant_event(drv->hapd,
 659                                              EVENT_MICHAEL_MIC_FAILURE, &data);
 660                         break;
 661                 }
 662                 break;
 663         }
 664 }
 665
 666 static int
 667 bsd_wireless_event_init(struct bsd_driver_data *drv)
 668 {
 669         int s;
 670
 671         drv->wext_sock = -1;
 672
 673         s = socket(PF_ROUTE, SOCK_RAW, 0);
 674         if (s < 0) {
 675                 perror("socket(PF_ROUTE,SOCK_RAW)");
 676                 return -1;
 677         }
 678         eloop_register_read_sock(s, bsd_wireless_event_receive, drv, NULL);
 679         drv->wext_sock = s;
 680
 681         return 0;
 682 }
 683
 684 static void
 685 bsd_wireless_event_deinit(struct bsd_driver_data *drv)
 686 {
 687         if (drv->wext_sock < 0)
 688                 return;
 689         eloop_unregister_read_sock(drv->wext_sock);
 690         close(drv->wext_sock);
 691 }
 692
 693
 694 static int
 695 bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
 696                int encrypt, const u8 *own_addr)
 697 {
 698         struct bsd_driver_data *drv = priv;
 699         unsigned char *bp;
 700         struct l2_ethhdr *eth;
 701         size_t len;
 702         int status;
 703
 704         /*
 705          * Prepend the Ethernet header.  If the caller left us
 706          * space at the front we could just insert it but since
 707          * we don't know we copy to a local buffer.  Given the frequency
 708          * and size of frames this probably doesn't matter.
 709          */
 710         len = data_len + sizeof(struct l2_ethhdr);
 711         bp = os_zalloc(len);
 712         if (bp == NULL) {
 713                 wpa_printf(MSG_ERROR, "malloc() failed for bsd_send_eapol"
 714                            "(len=%lu)", (unsigned long) len);
 715                 return -1;
 716         }
 717         eth = (struct l2_ethhdr *) bp;
 718         os_memcpy(eth->h_dest, addr, ETH_ALEN);
 719         os_memcpy(eth->h_source, own_addr, ETH_ALEN);
 720         eth->h_proto = htons(ETH_P_EAPOL);
 721         os_memcpy(eth + 1, data, data_len);
 722
 723         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
 724
 725         status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
 726
 727         os_free(bp);
 728         return status;
 729 }
 730
 731 static void
 732 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
 733 {
 734         struct bsd_driver_data *drv = ctx;
 735         drv_event_eapol_rx(drv->hapd, src_addr, buf + sizeof(struct l2_ethhdr),
 736                            len - sizeof(struct l2_ethhdr));
 737 }
 738
 739 static int
 740 hostapd_bsd_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
 741 {
 742         struct bsd_driver_data *drv = priv;
 743         int ssid_len;
 744
 745         ssid_len = bsd_get_ssid(drv->ioctl_sock, drv->iface, buf);
 746         wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, ssid_len, buf);
 747
 748         return ssid_len;
 749 }
 750
 751 static int
 752 hostapd_bsd_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
 753 {
 754         struct bsd_driver_data *drv = priv;
 755
 756         wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, len, buf);
 757
 758         return bsd_set_ssid(drv->ioctl_sock, drv->iface, buf, len);
 759 }
 760
 761 static void *
 762 bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
 763 {
 764         struct bsd_driver_data *drv;
 765
 766         drv = os_zalloc(sizeof(struct bsd_driver_data));
 767         if (drv == NULL) {
 768                 printf("Could not allocate memory for bsd driver data\n");
 769                 goto bad;
 770         }
 771
 772         drv->hapd = hapd;
 773         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
 774         if (drv->ioctl_sock < 0) {
 775                 perror("socket[PF_INET,SOCK_DGRAM]");
 776                 goto bad;
 777         }
 778         memcpy(drv->iface, params->ifname, sizeof(drv->iface));
 779
 780         drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
 781                                         handle_read, drv, 1);
 782         if (drv->sock_xmit == NULL)
 783                 goto bad;
 784         if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
 785                 goto bad;
 786
 787         bsd_set_iface_flags(drv, 0);    /* mark down during setup */
 788         if (bsd_wireless_event_init(drv))
 789                 goto bad;
 790
 791         return drv;
 792 bad:
 793         if (drv->sock_xmit != NULL)
 794                 l2_packet_deinit(drv->sock_xmit);
 795         if (drv->ioctl_sock >= 0)
 796                 close(drv->ioctl_sock);
 797         if (drv != NULL)
 798                 os_free(drv);
 799         return NULL;
 800 }
 801
 802
 803 static void
 804 bsd_deinit(void *priv)
 805 {
 806         struct bsd_driver_data *drv = priv;
 807
 808         bsd_wireless_event_deinit(drv);
 809         (void) bsd_set_iface_flags(drv, 0);
 810         if (drv->ioctl_sock >= 0)
 811                 close(drv->ioctl_sock);
 812         if (drv->sock_xmit != NULL)
 813                 l2_packet_deinit(drv->sock_xmit);
 814         os_free(drv);
 815 }
 816
 817 const struct wpa_driver_ops wpa_driver_bsd_ops = {
 818         .name                   = "bsd",
 819         .hapd_init              = bsd_init,
 820         .hapd_deinit            = bsd_deinit,
 821         .set_ieee8021x          = bsd_set_ieee8021x,
 822         .set_privacy            = bsd_set_privacy,
 823         .set_key                = bsd_set_key,
 824         .get_seqnum             = bsd_get_seqnum,
 825         .flush                  = bsd_flush,
 826         .set_generic_elem       = bsd_set_opt_ie,
 827         .sta_set_flags          = bsd_sta_set_flags,
 828         .read_sta_data          = bsd_read_sta_driver_data,
 829         .hapd_send_eapol        = bsd_send_eapol,
 830         .sta_disassoc           = bsd_sta_disassoc,
 831         .sta_deauth             = bsd_sta_deauth,
 832         .hapd_set_ssid          = hostapd_bsd_set_ssid,
 833         .hapd_get_ssid          = hostapd_bsd_get_ssid,
 834 };
 835
 836 #else /* HOSTAPD */
 837
 838 struct wpa_driver_bsd_data {
 839         int     sock;                   /* open socket for 802.11 ioctls */
 840         int     route;                  /* routing socket for events */
 841         char    ifname[IFNAMSIZ+1];     /* interface name */
 842         unsigned int ifindex;           /* interface index */
 843         void    *ctx;
 844         int     prev_roaming;           /* roaming state to restore on deinit */
 845         int     prev_privacy;           /* privacy state to restore on deinit */
 846         int     prev_wpa;               /* wpa state to restore on deinit */
 847 };
 848
 849 static int
 850 set80211var(struct wpa_driver_bsd_data *drv, int op, const void *arg, int arg_len)
 851 {
 852         return bsd_set80211var(drv->sock, drv->ifname, op, arg, arg_len);
 853 }
 854
 855 static int
 856 get80211var(struct wpa_driver_bsd_data *drv, int op, void *arg, int arg_len)
 857 {
 858         return bsd_get80211var(drv->sock, drv->ifname, op, arg, arg_len);
 859 }
 860
 861 static int
 862 set80211param(struct wpa_driver_bsd_data *drv, int op, int arg)
 863 {
 864         return bsd_set80211param(drv->sock, drv->ifname, op, arg);
 865 }
 866
 867 static int
 868 get80211param(struct wpa_driver_bsd_data *drv, int op)
 869 {
 870         struct ieee80211req ireq;
 871
 872         os_memset(&ireq, 0, sizeof(ireq));
 873         os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
 874         ireq.i_type = op;
 875
 876         if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
 877                 fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n",
 878                         op, strerror(errno));
 879                 return -1;
 880         }
 881         return ireq.i_val;
 882 }
 883
 884 static int
 885 getifflags(struct wpa_driver_bsd_data *drv, int *flags)
 886 {
 887         struct ifreq ifr;
 888
 889         os_memset(&ifr, 0, sizeof(ifr));
 890         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 891         if (ioctl(drv->sock, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
 892                 perror("SIOCGIFFLAGS");
 893                 return errno;
 894         }
 895         *flags = ifr.ifr_flags & 0xffff;
 896         return 0;
 897 }
 898
 899 static int
 900 setifflags(struct wpa_driver_bsd_data *drv, int flags)
 901 {
 902         struct ifreq ifr;
 903
 904         os_memset(&ifr, 0, sizeof(ifr));
 905         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 906         ifr.ifr_flags = flags & 0xffff;
 907         if (ioctl(drv->sock, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
 908                 perror("SIOCSIFFLAGS");
 909                 return errno;
 910         }
 911         return 0;
 912 }
 913
 914 static int
 915 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
 916 {
 917         struct wpa_driver_bsd_data *drv = priv;
 918 #ifdef SIOCG80211BSSID
 919         struct ieee80211_bssid bs;
 920
 921         os_strncpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
 922         if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
 923                 return -1;
 924         os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
 925         return 0;
 926 #else
 927         return get80211var(drv, IEEE80211_IOC_BSSID,
 928                 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
 929 #endif
 930 }
 931
 932 #if 0
 933 static int
 934 wpa_driver_bsd_set_bssid(void *priv, const char *bssid)
 935 {
 936         struct wpa_driver_bsd_data *drv = priv;
 937
 938         return set80211var(drv, IEEE80211_IOC_BSSID,
 939                 bssid, IEEE80211_ADDR_LEN);
 940 }
 941 #endif
 942
 943 static int
 944 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
 945 {
 946         struct wpa_driver_bsd_data *drv = priv;
 947
 948         return bsd_get_ssid(drv->sock, drv->ifname, ssid);
 949 }
 950
 951 static int
 952 wpa_driver_bsd_set_ssid(void *priv, const u8 *ssid,
 953                              size_t ssid_len)
 954 {
 955         struct wpa_driver_bsd_data *drv = priv;
 956
 957         return bsd_set_ssid(drv->sock, drv->ifname, ssid, ssid_len);
 958 }
 959
 960 static int
 961 wpa_driver_bsd_set_wpa_ie(struct wpa_driver_bsd_data *drv,
 962         const u8 *wpa_ie, size_t wpa_ie_len)
 963 {
 964 #ifdef IEEE80211_IOC_APPIE
 965         return set80211var(drv, IEEE80211_IOC_APPIE, wpa_ie, wpa_ie_len);
 966 #else /* IEEE80211_IOC_APPIE */
 967         return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
 968 #endif /* IEEE80211_IOC_APPIE */
 969 }
 970
 971 static int
 972 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
 973 {
 974         struct wpa_driver_bsd_data *drv = priv;
 975         int ret = 0;
 976
 977         wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
 978                 __FUNCTION__, wpa, privacy);
 979
 980         if (!wpa && wpa_driver_bsd_set_wpa_ie(drv, NULL, 0) < 0)
 981                 ret = -1;
 982         if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
 983                 ret = -1;
 984         if (set80211param(drv, IEEE80211_IOC_WPA, wpa) < 0)
 985                 ret = -1;
 986
 987         return ret;
 988 }
 989
 990 static int
 991 wpa_driver_bsd_set_wpa(void *priv, int enabled)
 992 {
 993         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
 994
 995         return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
 996 }
 997
 998 static int
 999 wpa_driver_bsd_del_key(struct wpa_driver_bsd_data *drv, int key_idx,
1000                        const unsigned char *addr)
1001 {
1002         struct ieee80211req_del_key wk;
1003
1004         os_memset(&wk, 0, sizeof(wk));
1005         if (addr != NULL &&
1006             bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) != 0) {
1007                 struct ether_addr ea;
1008
1009                 os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1010                 wpa_printf(MSG_DEBUG, "%s: addr=%s keyidx=%d",
1011                         __func__, ether_ntoa(&ea), key_idx);
1012                 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
1013                 wk.idk_keyix = (uint8_t) IEEE80211_KEYIX_NONE;
1014         } else {
1015                 wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __func__, key_idx);
1016                 wk.idk_keyix = key_idx;
1017         }
1018         return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
1019 }
1020
1021 static int
1022 wpa_driver_bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
1023                        const unsigned char *addr, int key_idx, int set_tx,
1024                        const u8 *seq, size_t seq_len,
1025                        const u8 *key, size_t key_len)
1026 {
1027         struct wpa_driver_bsd_data *drv = priv;
1028         struct ieee80211req_key wk;
1029         struct ether_addr ea;
1030         char *alg_name;
1031         u_int8_t cipher;
1032
1033         if (alg == WPA_ALG_NONE)
1034                 return wpa_driver_bsd_del_key(drv, key_idx, addr);
1035
1036         switch (alg) {
1037         case WPA_ALG_WEP:
1038                 alg_name = "WEP";
1039                 cipher = IEEE80211_CIPHER_WEP;
1040                 break;
1041         case WPA_ALG_TKIP:
1042                 alg_name = "TKIP";
1043                 cipher = IEEE80211_CIPHER_TKIP;
1044                 break;
1045         case WPA_ALG_CCMP:
1046                 alg_name = "CCMP";
1047                 cipher = IEEE80211_CIPHER_AES_CCM;
1048                 break;
1049         default:
1050                 wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
1051                         __func__, alg);
1052                 return -1;
1053         }
1054
1055         os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1056         wpa_printf(MSG_DEBUG,
1057                 "%s: alg=%s addr=%s key_idx=%d set_tx=%d seq_len=%zu key_len=%zu",
1058                 __func__, alg_name, ether_ntoa(&ea), key_idx, set_tx,
1059                 seq_len, key_len);
1060
1061         if (seq_len > sizeof(u_int64_t)) {
1062                 wpa_printf(MSG_DEBUG, "%s: seq_len %zu too big",
1063                         __func__, seq_len);
1064                 return -2;
1065         }
1066         if (key_len > sizeof(wk.ik_keydata)) {
1067                 wpa_printf(MSG_DEBUG, "%s: key length %zu too big",
1068                         __func__, key_len);
1069                 return -3;
1070         }
1071
1072         os_memset(&wk, 0, sizeof(wk));
1073         wk.ik_type = cipher;
1074         wk.ik_flags = IEEE80211_KEY_RECV;
1075         if (set_tx)
1076                 wk.ik_flags |= IEEE80211_KEY_XMIT;
1077         os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
1078         /*
1079          * Deduce whether group/global or unicast key by checking
1080          * the address (yech).  Note also that we can only mark global
1081          * keys default; doing this for a unicast key is an error.
1082          */
1083         if (bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) == 0) {
1084                 wk.ik_flags |= IEEE80211_KEY_GROUP;
1085                 wk.ik_keyix = key_idx;
1086         } else {
1087                 wk.ik_keyix = (key_idx == 0 ? IEEE80211_KEYIX_NONE : key_idx);
1088         }
1089         if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
1090                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
1091         wk.ik_keylen = key_len;
1092         os_memcpy(&wk.ik_keyrsc, seq, seq_len);
1093         os_memcpy(wk.ik_keydata, key, key_len);
1094
1095         return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
1096 }
1097
1098 static int
1099 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
1100 {
1101         struct wpa_driver_bsd_data *drv = priv;
1102
1103         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1104         return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
1105 }
1106
1107
1108 static int
1109 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
1110 {
1111         struct wpa_driver_bsd_data *drv = priv;
1112
1113         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1114         return set80211param(drv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
1115 }
1116
1117 static int
1118 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
1119 {
1120         struct wpa_driver_bsd_data *drv = priv;
1121         struct ieee80211req_mlme mlme;
1122
1123         wpa_printf(MSG_DEBUG, "%s", __func__);
1124         os_memset(&mlme, 0, sizeof(mlme));
1125         mlme.im_op = IEEE80211_MLME_DEAUTH;
1126         mlme.im_reason = reason_code;
1127         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1128         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1129 }
1130
1131 static int
1132 wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
1133 {
1134         struct wpa_driver_bsd_data *drv = priv;
1135         struct ieee80211req_mlme mlme;
1136
1137         wpa_printf(MSG_DEBUG, "%s", __func__);
1138         os_memset(&mlme, 0, sizeof(mlme));
1139         mlme.im_op = IEEE80211_MLME_DISASSOC;
1140         mlme.im_reason = reason_code;
1141         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1142         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1143 }
1144
1145 static int
1146 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
1147 {
1148         struct wpa_driver_bsd_data *drv = priv;
1149         int authmode;
1150
1151         if ((auth_alg & WPA_AUTH_ALG_OPEN) &&
1152             (auth_alg & WPA_AUTH_ALG_SHARED))
1153                 authmode = IEEE80211_AUTH_AUTO;
1154         else if (auth_alg & WPA_AUTH_ALG_SHARED)
1155                 authmode = IEEE80211_AUTH_SHARED;
1156         else
1157                 authmode = IEEE80211_AUTH_OPEN;
1158
1159         return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
1160 }
1161
1162 static int
1163 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
1164 {
1165         struct wpa_driver_bsd_data *drv = priv;
1166         struct ieee80211req_mlme mlme;
1167         int privacy;
1168         int ret = 0;
1169
1170         wpa_printf(MSG_DEBUG,
1171                 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1172                 , __func__
1173                    , (unsigned int) params->ssid_len, params->ssid
1174                 , (unsigned int) params->wpa_ie_len
1175                 , params->pairwise_suite
1176                 , params->group_suite
1177                 , params->key_mgmt_suite
1178         );
1179
1180         if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1181             < 0)
1182                 ret = -1;
1183         if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1184                 ret = -1;
1185         /* XXX error handling is wrong but unclear what to do... */
1186         if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1187                 return -1;
1188
1189         privacy = !(params->pairwise_suite == CIPHER_NONE &&
1190             params->group_suite == CIPHER_NONE &&
1191             params->key_mgmt_suite == KEY_MGMT_NONE &&
1192             params->wpa_ie_len == 0);
1193         wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1194
1195         if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1196                 return -1;
1197
1198         if (params->wpa_ie_len &&
1199             set80211param(drv, IEEE80211_IOC_WPA,
1200                           params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1201                 return -1;
1202
1203         os_memset(&mlme, 0, sizeof(mlme));
1204         mlme.im_op = IEEE80211_MLME_ASSOC;
1205         if (params->ssid != NULL)
1206                 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1207         mlme.im_ssid_len = params->ssid_len;
1208         if (params->bssid != NULL)
1209                 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1210         if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1211                 return -1;
1212         return ret;
1213 }
1214
1215 static int
1216 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
1217 {
1218         struct wpa_driver_bsd_data *drv = priv;
1219         int flags;
1220         const u8 *ssid = params->ssids[0].ssid;
1221         size_t ssid_len = params->ssids[0].ssid_len;
1222
1223         /* NB: interface must be marked UP to do a scan */
1224         if (getifflags(drv, &flags) != 0 || setifflags(drv, flags | IFF_UP) != 0)
1225                 return -1;
1226
1227         /* set desired ssid before scan */
1228         if (wpa_driver_bsd_set_ssid(drv, ssid, ssid_len) < 0)
1229                 return -1;
1230
1231         /* NB: net80211 delivers a scan complete event so no need to poll */
1232         return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1233 }
1234
1235 static void
1236 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1237 {
1238         struct wpa_driver_bsd_data *drv = sock_ctx;
1239         char buf[2048];
1240         struct if_announcemsghdr *ifan;
1241         struct if_msghdr *ifm;
1242         struct rt_msghdr *rtm;
1243         union wpa_event_data event;
1244         struct ieee80211_michael_event *mic;
1245         int n;
1246
1247         n = read(sock, buf, sizeof(buf));
1248         if (n < 0) {
1249                 if (errno != EINTR && errno != EAGAIN)
1250                         perror("read(PF_ROUTE)");
1251                 return;
1252         }
1253
1254         rtm = (struct rt_msghdr *) buf;
1255         if (rtm->rtm_version != RTM_VERSION) {
1256                 wpa_printf(MSG_DEBUG, "Routing message version %d not "
1257                         "understood\n", rtm->rtm_version);
1258                 return;
1259         }
1260         os_memset(&event, 0, sizeof(event));
1261         switch (rtm->rtm_type) {
1262         case RTM_IFANNOUNCE:
1263                 ifan = (struct if_announcemsghdr *) rtm;
1264                 if (ifan->ifan_index != drv->ifindex)
1265                         break;
1266                 strlcpy(event.interface_status.ifname, drv->ifname,
1267                         sizeof(event.interface_status.ifname));
1268                 switch (ifan->ifan_what) {
1269                 case IFAN_DEPARTURE:
1270                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1271                 default:
1272                         return;
1273                 }
1274                 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1275                            event.interface_status.ifname,
1276                            ifan->ifan_what == IFAN_DEPARTURE ?
1277                                 "removed" : "added");
1278                 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1279                 break;
1280         case RTM_IEEE80211:
1281                 ifan = (struct if_announcemsghdr *) rtm;
1282                 if (ifan->ifan_index != drv->ifindex)
1283                         break;
1284                 switch (ifan->ifan_what) {
1285                 case RTM_IEEE80211_ASSOC:
1286                 case RTM_IEEE80211_REASSOC:
1287                         wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1288                         break;
1289                 case RTM_IEEE80211_DISASSOC:
1290                         wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1291                         break;
1292                 case RTM_IEEE80211_SCAN:
1293                         wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1294                         break;
1295                 case RTM_IEEE80211_REPLAY:
1296                         /* ignore */
1297                         break;
1298                 case RTM_IEEE80211_MICHAEL:
1299                         mic = (struct ieee80211_michael_event *) &ifan[1];
1300                         wpa_printf(MSG_DEBUG,
1301                                 "Michael MIC failure wireless event: "
1302                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1303                                 MAC2STR(mic->iev_src));
1304
1305                         os_memset(&event, 0, sizeof(event));
1306                         event.michael_mic_failure.unicast =
1307                                 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1308                         wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1309                                 &event);
1310                         break;
1311                 }
1312                 break;
1313         case RTM_IFINFO:
1314                 ifm = (struct if_msghdr *) rtm;
1315                 if (ifm->ifm_index != drv->ifindex)
1316                         break;
1317                 if ((rtm->rtm_flags & RTF_UP) == 0) {
1318                         strlcpy(event.interface_status.ifname, drv->ifname,
1319                                 sizeof(event.interface_status.ifname));
1320                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1321                         wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1322                                    event.interface_status.ifname);
1323                         wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1324                 }
1325                 break;
1326         }
1327 }
1328
1329 static void
1330 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1331                               struct ieee80211req_scan_result *sr)
1332 {
1333         struct wpa_scan_res *result, **tmp;
1334         size_t extra_len;
1335         u8 *pos;
1336
1337         extra_len = 2 + sr->isr_ssid_len;
1338         extra_len += 2 + sr->isr_nrates;
1339         extra_len += 3; /* ERP IE */
1340         extra_len += sr->isr_ie_len;
1341
1342         result = os_zalloc(sizeof(*result) + extra_len);
1343         if (result == NULL)
1344                 return;
1345         os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1346         result->freq = sr->isr_freq;
1347         result->beacon_int = sr->isr_intval;
1348         result->caps = sr->isr_capinfo;
1349         result->qual = sr->isr_rssi;
1350         result->noise = sr->isr_noise;
1351
1352         pos = (u8 *)(result + 1);
1353
1354         *pos++ = WLAN_EID_SSID;
1355         *pos++ = sr->isr_ssid_len;
1356         os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1357         pos += sr->isr_ssid_len;
1358
1359         /*
1360          * Deal all rates as supported rate.
1361          * Because net80211 doesn't report extended supported rate or not.
1362          */
1363         *pos++ = WLAN_EID_SUPP_RATES;
1364         *pos++ = sr->isr_nrates;
1365         os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1366         pos += sr->isr_nrates;
1367
1368         *pos++ = WLAN_EID_ERP_INFO;
1369         *pos++ = 1;
1370         *pos++ = sr->isr_erp;
1371
1372         os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1373         pos += sr->isr_ie_len;
1374
1375         result->ie_len = pos - (u8 *)(result + 1);
1376
1377         tmp = os_realloc(res->res,
1378                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1379         if (tmp == NULL) {
1380                 os_free(result);
1381                 return;
1382         }
1383         tmp[res->num++] = result;
1384         res->res = tmp;
1385 }
1386
1387 struct wpa_scan_results *
1388 wpa_driver_bsd_get_scan_results2(void *priv)
1389 {
1390         struct wpa_driver_bsd_data *drv = priv;
1391         struct ieee80211req_scan_result *sr;
1392         struct wpa_scan_results *res;
1393         int len, rest;
1394         uint8_t buf[24*1024], *pos;
1395
1396         len = get80211var(drv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1397         if (len < 0)
1398                 return NULL;
1399
1400         res = os_zalloc(sizeof(*res));
1401         if (res == NULL)
1402                 return NULL;
1403
1404         pos = buf;
1405         rest = len;
1406         while (rest >= sizeof(struct ieee80211req_scan_result)) {
1407                 sr = (struct ieee80211req_scan_result *)pos;
1408                 wpa_driver_bsd_add_scan_entry(res, sr);
1409                 pos += sr->isr_len;
1410                 rest -= sr->isr_len;
1411         }
1412
1413         wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1414                    len, (unsigned long)res->num);
1415
1416         return res;
1417 }
1418
1419 static void *
1420 wpa_driver_bsd_init(void *ctx, const char *ifname)
1421 {
1422 #define GETPARAM(drv, param, v) \
1423         (((v) = get80211param(drv, param)) != -1)
1424         struct wpa_driver_bsd_data *drv;
1425
1426         drv = os_zalloc(sizeof(*drv));
1427         if (drv == NULL)
1428                 return NULL;
1429         /*
1430          * NB: We require the interface name be mappable to an index.
1431          *     This implies we do not support having wpa_supplicant
1432          *     wait for an interface to appear.  This seems ok; that
1433          *     doesn't belong here; it's really the job of devd.
1434          */
1435         drv->ifindex = if_nametoindex(ifname);
1436         if (drv->ifindex == 0) {
1437                 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1438                            __func__, ifname);
1439                 goto fail1;
1440         }
1441         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1442         if (drv->sock < 0)
1443                 goto fail1;
1444         drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1445         if (drv->route < 0)
1446                 goto fail;
1447         eloop_register_read_sock(drv->route,
1448                 wpa_driver_bsd_event_receive, ctx, drv);
1449
1450         drv->ctx = ctx;
1451         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1452
1453         if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1454                 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1455                         __func__, strerror(errno));
1456                 goto fail;
1457         }
1458         if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1459                 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1460                         __func__, strerror(errno));
1461                 goto fail;
1462         }
1463         if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1464                 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1465                         __func__, strerror(errno));
1466                 goto fail;
1467         }
1468         if (set80211param(drv, IEEE80211_IOC_ROAMING, IEEE80211_ROAMING_MANUAL) < 0) {
1469                 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
1470                            "roaming: %s", __func__, strerror(errno));
1471                 goto fail;
1472         }
1473
1474         if (set80211param(drv, IEEE80211_IOC_WPA, 1+2) < 0) {
1475                 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support %s",
1476                            __func__, strerror(errno));
1477                 goto fail;
1478         }
1479
1480         wpa_driver_bsd_set_wpa(drv, 1);
1481
1482         return drv;
1483 fail:
1484         close(drv->sock);
1485 fail1:
1486         os_free(drv);
1487         return NULL;
1488 #undef GETPARAM
1489 }
1490
1491 static void
1492 wpa_driver_bsd_deinit(void *priv)
1493 {
1494         struct wpa_driver_bsd_data *drv = priv;
1495         int flags;
1496
1497         wpa_driver_bsd_set_wpa(drv, 0);
1498         eloop_unregister_read_sock(drv->route);
1499
1500         /* NB: mark interface down */
1501         if (getifflags(drv, &flags) == 0)
1502                 (void) setifflags(drv, flags &~ IFF_UP);
1503
1504         wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1505         if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1506                 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1507                         __func__);
1508
1509         (void) close(drv->route);               /* ioctl socket */
1510         (void) close(drv->sock);                /* event socket */
1511         os_free(drv);
1512 }
1513
1514
1515 const struct wpa_driver_ops wpa_driver_bsd_ops = {
1516         .name                   = "bsd",
1517         .desc                   = "BSD 802.11 support",
1518         .init                   = wpa_driver_bsd_init,
1519         .deinit                 = wpa_driver_bsd_deinit,
1520         .get_bssid              = wpa_driver_bsd_get_bssid,
1521         .get_ssid               = wpa_driver_bsd_get_ssid,
1522         .set_key                = wpa_driver_bsd_set_key,
1523         .set_countermeasures    = wpa_driver_bsd_set_countermeasures,
1524         .scan2                  = wpa_driver_bsd_scan,
1525         .get_scan_results2      = wpa_driver_bsd_get_scan_results2,
1526         .deauthenticate         = wpa_driver_bsd_deauthenticate,
1527         .disassociate           = wpa_driver_bsd_disassociate,
1528         .associate              = wpa_driver_bsd_associate,
1529 };
1530
1531 #endif /* HOSTAPD */