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 #include <sys/sysctl.h>
  19
  20 #include "common.h"
  21 #include "driver.h"
  22 #include "eloop.h"
  23 #include "common/ieee802_11_defs.h"
  24 #include "common/wpa_common.h"
  25
  26 #include <net/if.h>
  27 #include <net/if_media.h>
  28
  29 #ifdef __NetBSD__
  30 #include <net/if_ether.h>
  31 #else
  32 #include <net/ethernet.h>
  33 #endif
  34 #include <net/route.h>
  35
  36 #ifdef __DragonFly__
  37 #include <netproto/802_11/ieee80211_ioctl.h>
  38 #include <netproto/802_11/ieee80211_dragonfly.h>
  39 #else /* __DragonFly__ */
  40 #ifdef __GLIBC__
  41 #include <netinet/ether.h>
  42 #endif /* __GLIBC__ */
  43 #include <net80211/ieee80211.h>
  44 #include <net80211/ieee80211_ioctl.h>
  45 #include <net80211/ieee80211_crypto.h>
  46 #endif /* __DragonFly__ || __GLIBC__ */
  47 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
  48 #include <net80211/ieee80211_freebsd.h>
  49 #endif
  50 #if __NetBSD__
  51 #include <net80211/ieee80211_netbsd.h>
  52 #endif
  53
  54 #include "l2_packet/l2_packet.h"
  55
  56 struct bsd_driver_data {
  57         struct hostapd_data *hapd;      /* back pointer */
  58
  59         int     sock;                   /* open socket for 802.11 ioctls */
  60         struct l2_packet_data *sock_xmit;/* raw packet xmit socket */
  61         int     route;                  /* routing socket for events */
  62         char    ifname[IFNAMSIZ+1];     /* interface name */
  63         unsigned int ifindex;           /* interface index */
  64         void    *ctx;
  65         struct wpa_driver_capa capa;    /* driver capability */
  66         int     is_ap;                  /* Access point mode */
  67         int     prev_roaming;   /* roaming state to restore on deinit */
  68         int     prev_privacy;   /* privacy state to restore on deinit */
  69         int     prev_wpa;       /* wpa state to restore on deinit */
  70 };
  71
  72 /* Generic functions for hostapd and wpa_supplicant */
  73
  74 static int
  75 bsd_set80211(void *priv, int op, int val, const void *arg, int arg_len)
  76 {
  77         struct bsd_driver_data *drv = priv;
  78         struct ieee80211req ireq;
  79
  80         os_memset(&ireq, 0, sizeof(ireq));
  81         os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
  82         ireq.i_type = op;
  83         ireq.i_val = val;
  84         ireq.i_data = (void *) arg;
  85         ireq.i_len = arg_len;
  86
  87         if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
  88                 wpa_printf(MSG_ERROR, "ioctl[SIOCS80211, op=%u, val=%u, "
  89                            "arg_len=%u]: %s", op, val, arg_len,
  90                            strerror(errno));
  91                 return -1;
  92         }
  93         return 0;
  94 }
  95
  96 static int
  97 bsd_get80211(void *priv, struct ieee80211req *ireq, int op, void *arg,
  98              int arg_len)
  99 {
 100         struct bsd_driver_data *drv = priv;
 101
 102         os_memset(ireq, 0, sizeof(*ireq));
 103         os_strlcpy(ireq->i_name, drv->ifname, sizeof(ireq->i_name));
 104         ireq->i_type = op;
 105         ireq->i_len = arg_len;
 106         ireq->i_data = arg;
 107
 108         if (ioctl(drv->sock, SIOCG80211, ireq) < 0) {
 109                 wpa_printf(MSG_ERROR, "ioctl[SIOCS80211, op=%u, "
 110                            "arg_len=%u]: %s", op, arg_len, strerror(errno));
 111                 return -1;
 112         }
 113         return 0;
 114 }
 115
 116 static int
 117 get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
 118 {
 119         struct ieee80211req ireq;
 120
 121         if (bsd_get80211(drv, &ireq, op, arg, arg_len) < 0)
 122                 return -1;
 123         return ireq.i_len;
 124 }
 125
 126 static int
 127 set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
 128 {
 129         return bsd_set80211(drv, op, 0, arg, arg_len);
 130 }
 131
 132 static int
 133 set80211param(struct bsd_driver_data *drv, int op, int arg)
 134 {
 135         return bsd_set80211(drv, op, arg, NULL, 0);
 136 }
 137
 138 static int
 139 bsd_get_ssid(void *priv, u8 *ssid, int len)
 140 {
 141         struct bsd_driver_data *drv = priv;
 142 #ifdef SIOCG80211NWID
 143         struct ieee80211_nwid nwid;
 144         struct ifreq ifr;
 145
 146         os_memset(&ifr, 0, sizeof(ifr));
 147         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 148         ifr.ifr_data = (void *)&nwid;
 149         if (ioctl(drv->sock, SIOCG80211NWID, &ifr) < 0 ||
 150             nwid.i_len > IEEE80211_NWID_LEN)
 151                 return -1;
 152         os_memcpy(ssid, nwid.i_nwid, nwid.i_len);
 153         return nwid.i_len;
 154 #else
 155         return get80211var(drv, IEEE80211_IOC_SSID, ssid, IEEE80211_NWID_LEN);
 156 #endif
 157 }
 158
 159 static int
 160 bsd_set_ssid(void *priv, const u8 *ssid, int ssid_len)
 161 {
 162         struct bsd_driver_data *drv = priv;
 163 #ifdef SIOCS80211NWID
 164         struct ieee80211_nwid nwid;
 165         struct ifreq ifr;
 166
 167         os_memcpy(nwid.i_nwid, ssid, ssid_len);
 168         nwid.i_len = ssid_len;
 169         os_memset(&ifr, 0, sizeof(ifr));
 170         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 171         ifr.ifr_data = (void *)&nwid;
 172         return ioctl(drv->sock, SIOCS80211NWID, &ifr);
 173 #else
 174         return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len);
 175 #endif
 176 }
 177
 178 static int
 179 bsd_get_if_media(void *priv)
 180 {
 181         struct bsd_driver_data *drv = priv;
 182         struct ifmediareq ifmr;
 183
 184         os_memset(&ifmr, 0, sizeof(ifmr));
 185         os_strlcpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name));
 186
 187         if (ioctl(drv->sock, SIOCGIFMEDIA, &ifmr) < 0) {
 188                 wpa_printf(MSG_ERROR, "%s: SIOCGIFMEDIA %s", __func__,
 189                            strerror(errno));
 190                 return -1;
 191         }
 192
 193         return ifmr.ifm_current;
 194 }
 195
 196 static int
 197 bsd_set_if_media(void *priv, int media)
 198 {
 199         struct bsd_driver_data *drv = priv;
 200         struct ifreq ifr;
 201
 202         os_memset(&ifr, 0, sizeof(ifr));
 203         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 204         ifr.ifr_media = media;
 205
 206         if (ioctl(drv->sock, SIOCSIFMEDIA, &ifr) < 0) {
 207                 wpa_printf(MSG_ERROR, "%s: SIOCSIFMEDIA %s", __func__,
 208                            strerror(errno));
 209                 return -1;
 210         }
 211
 212         return 0;
 213 }
 214
 215 static int
 216 bsd_set_mediaopt(void *priv, uint32_t mask, uint32_t mode)
 217 {
 218         int media = bsd_get_if_media(priv);
 219
 220         if (media < 0)
 221                 return -1;
 222         media &= ~mask;
 223         media |= mode;
 224         if (bsd_set_if_media(priv, media) < 0)
 225                 return -1;
 226         return 0;
 227 }
 228
 229 static int
 230 bsd_del_key(void *priv, const u8 *addr, int key_idx)
 231 {
 232         struct ieee80211req_del_key wk;
 233
 234         os_memset(&wk, 0, sizeof(wk));
 235         if (addr == NULL) {
 236                 wpa_printf(MSG_DEBUG, "%s: key_idx=%d", __func__, key_idx);
 237                 wk.idk_keyix = key_idx;
 238         } else {
 239                 wpa_printf(MSG_DEBUG, "%s: addr=" MACSTR, __func__,
 240                            MAC2STR(addr));
 241                 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 242                 wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */
 243         }
 244
 245         return set80211var(priv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
 246 }
 247
 248 static int
 249 bsd_send_mlme_param(void *priv, const u8 op, const u16 reason, const u8 *addr)
 250 {
 251         struct ieee80211req_mlme mlme;
 252
 253         os_memset(&mlme, 0, sizeof(mlme));
 254         mlme.im_op = op;
 255         mlme.im_reason = reason;
 256         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 257         return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
 258 }
 259
 260 static int
 261 bsd_ctrl_iface(void *priv, int enable)
 262 {
 263         struct bsd_driver_data *drv = priv;
 264         struct ifreq ifr;
 265
 266         os_memset(&ifr, 0, sizeof(ifr));
 267         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 268
 269         if (ioctl(drv->sock, SIOCGIFFLAGS, &ifr) < 0) {
 270                 perror("ioctl[SIOCGIFFLAGS]");
 271                 return -1;
 272         }
 273
 274         if (enable)
 275                 ifr.ifr_flags |= IFF_UP;
 276         else
 277                 ifr.ifr_flags &= ~IFF_UP;
 278
 279         if (ioctl(drv->sock, SIOCSIFFLAGS, &ifr) < 0) {
 280                 perror("ioctl[SIOCSIFFLAGS]");
 281                 return -1;
 282         }
 283
 284         return 0;
 285 }
 286
 287 static int
 288 bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
 289             const unsigned char *addr, int key_idx, int set_tx, const u8 *seq,
 290             size_t seq_len, const u8 *key, size_t key_len)
 291 {
 292         struct ieee80211req_key wk;
 293
 294         wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d "
 295                    "seq_len=%zu key_len=%zu", __func__, alg, addr, key_idx,
 296                    set_tx, seq_len, key_len);
 297
 298         if (alg == WPA_ALG_NONE) {
 299 #ifndef HOSTAPD
 300                 if (addr == NULL || is_broadcast_ether_addr(addr))
 301                         return bsd_del_key(priv, NULL, key_idx);
 302                 else
 303 #endif /* HOSTAPD */
 304                         return bsd_del_key(priv, addr, key_idx);
 305         }
 306
 307         os_memset(&wk, 0, sizeof(wk));
 308         switch (alg) {
 309         case WPA_ALG_WEP:
 310                 wk.ik_type = IEEE80211_CIPHER_WEP;
 311                 break;
 312         case WPA_ALG_TKIP:
 313                 wk.ik_type = IEEE80211_CIPHER_TKIP;
 314                 break;
 315         case WPA_ALG_CCMP:
 316                 wk.ik_type = IEEE80211_CIPHER_AES_CCM;
 317                 break;
 318         default:
 319                 wpa_printf(MSG_ERROR, "%s: unknown alg=%d", __func__, alg);
 320                 return -1;
 321         }
 322
 323         wk.ik_flags = IEEE80211_KEY_RECV;
 324         if (set_tx)
 325                 wk.ik_flags |= IEEE80211_KEY_XMIT;
 326
 327         if (addr == NULL) {
 328                 os_memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 329                 wk.ik_keyix = key_idx;
 330         } else {
 331                 os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 332                 /*
 333                  * Deduce whether group/global or unicast key by checking
 334                  * the address (yech).  Note also that we can only mark global
 335                  * keys default; doing this for a unicast key is an error.
 336                  */
 337                 if (is_broadcast_ether_addr(addr)) {
 338                         wk.ik_flags |= IEEE80211_KEY_GROUP;
 339                         wk.ik_keyix = key_idx;
 340                 } else {
 341                         wk.ik_keyix = key_idx == 0 ? IEEE80211_KEYIX_NONE :
 342                                 key_idx;
 343                 }
 344         }
 345         if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
 346                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 347         wk.ik_keylen = key_len;
 348         if (seq)
 349                 os_memcpy(&wk.ik_keyrsc, seq, seq_len);
 350         os_memcpy(wk.ik_keydata, key, key_len);
 351
 352         return set80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
 353 }
 354
 355 static int
 356 bsd_configure_wpa(void *priv, struct wpa_bss_params *params)
 357 {
 358 #ifndef IEEE80211_IOC_APPIE
 359         static const char *ciphernames[] =
 360                 { "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
 361         int v;
 362
 363         switch (params->wpa_group) {
 364         case WPA_CIPHER_CCMP:
 365                 v = IEEE80211_CIPHER_AES_CCM;
 366                 break;
 367         case WPA_CIPHER_TKIP:
 368                 v = IEEE80211_CIPHER_TKIP;
 369                 break;
 370         case WPA_CIPHER_WEP104:
 371                 v = IEEE80211_CIPHER_WEP;
 372                 break;
 373         case WPA_CIPHER_WEP40:
 374                 v = IEEE80211_CIPHER_WEP;
 375                 break;
 376         case WPA_CIPHER_NONE:
 377                 v = IEEE80211_CIPHER_NONE;
 378                 break;
 379         default:
 380                 printf("Unknown group key cipher %u\n",
 381                         params->wpa_group);
 382                 return -1;
 383         }
 384         wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
 385                    __func__, ciphernames[v], v);
 386         if (set80211param(priv, IEEE80211_IOC_MCASTCIPHER, v)) {
 387                 printf("Unable to set group key cipher to %u (%s)\n",
 388                         v, ciphernames[v]);
 389                 return -1;
 390         }
 391         if (v == IEEE80211_CIPHER_WEP) {
 392                 /* key length is done only for specific ciphers */
 393                 v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 394                 if (set80211param(priv, IEEE80211_IOC_MCASTKEYLEN, v)) {
 395                         printf("Unable to set group key length to %u\n", v);
 396                         return -1;
 397                 }
 398         }
 399
 400         v = 0;
 401         if (params->wpa_pairwise & WPA_CIPHER_CCMP)
 402                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 403         if (params->wpa_pairwise & WPA_CIPHER_TKIP)
 404                 v |= 1<<IEEE80211_CIPHER_TKIP;
 405         if (params->wpa_pairwise & WPA_CIPHER_NONE)
 406                 v |= 1<<IEEE80211_CIPHER_NONE;
 407         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 408         if (set80211param(priv, IEEE80211_IOC_UCASTCIPHERS, v)) {
 409                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 410                 return -1;
 411         }
 412
 413         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 414                    __func__, params->wpa_key_mgmt);
 415         if (set80211param(priv, IEEE80211_IOC_KEYMGTALGS,
 416                           params->wpa_key_mgmt)) {
 417                 printf("Unable to set key management algorithms to 0x%x\n",
 418                         params->wpa_key_mgmt);
 419                 return -1;
 420         }
 421
 422         v = 0;
 423         if (params->rsn_preauth)
 424                 v |= BIT(0);
 425         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 426                    __func__, params->rsn_preauth);
 427         if (set80211param(priv, IEEE80211_IOC_RSNCAPS, v)) {
 428                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 429                 return -1;
 430         }
 431 #endif /* IEEE80211_IOC_APPIE */
 432
 433         wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, params->wpa);
 434         if (set80211param(priv, IEEE80211_IOC_WPA, params->wpa)) {
 435                 printf("Unable to set WPA to %u\n", params->wpa);
 436                 return -1;
 437         }
 438         return 0;
 439 }
 440
 441 static int
 442 bsd_set_ieee8021x(void *priv, struct wpa_bss_params *params)
 443 {
 444         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);
 445
 446         if (!params->enabled) {
 447                 /* XXX restore state */
 448                 return set80211param(priv, IEEE80211_IOC_AUTHMODE,
 449                                      IEEE80211_AUTH_AUTO);
 450         }
 451         if (!params->wpa && !params->ieee802_1x) {
 452                 wpa_printf(MSG_ERROR, "%s: No 802.1X or WPA enabled",
 453                            __func__);
 454                 return -1;
 455         }
 456         if (params->wpa && bsd_configure_wpa(priv, params) != 0) {
 457                 wpa_printf(MSG_ERROR, "%s: Failed to configure WPA state",
 458                            __func__);
 459                 return -1;
 460         }
 461         if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
 462                 (params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 463                 wpa_printf(MSG_ERROR, "%s: Failed to enable WPA/802.1X",
 464                            __func__);
 465                 return -1;
 466         }
 467         return bsd_ctrl_iface(priv, 1);
 468 }
 469
 470 static int
 471 bsd_set_sta_authorized(void *priv, const u8 *addr,
 472                        int total_flags, int flags_or, int flags_and)
 473 {
 474         int authorized = -1;
 475
 476         /* For now, only support setting Authorized flag */
 477         if (flags_or & WPA_STA_AUTHORIZED)
 478                 authorized = 1;
 479         if (!(flags_and & WPA_STA_AUTHORIZED))
 480                 authorized = 0;
 481
 482         if (authorized < 0)
 483                 return 0;
 484
 485         return bsd_send_mlme_param(priv, authorized ?
 486                                    IEEE80211_MLME_AUTHORIZE :
 487                                    IEEE80211_MLME_UNAUTHORIZE, 0, addr);
 488 }
 489
 490 static void
 491 bsd_new_sta(void *priv, void *ctx, u8 addr[IEEE80211_ADDR_LEN])
 492 {
 493         struct ieee80211req_wpaie ie;
 494         int ielen = 0;
 495         u8 *iebuf = NULL;
 496
 497         /*
 498          * Fetch and validate any negotiated WPA/RSN parameters.
 499          */
 500         memset(&ie, 0, sizeof(ie));
 501         memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
 502         if (get80211var(priv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
 503                 printf("Failed to get WPA/RSN information element.\n");
 504                 goto no_ie;
 505         }
 506         iebuf = ie.wpa_ie;
 507         ielen = ie.wpa_ie[1];
 508         if (ielen == 0)
 509                 iebuf = NULL;
 510         else
 511                 ielen += 2;
 512
 513 no_ie:
 514         drv_event_assoc(ctx, addr, iebuf, ielen);
 515 }
 516
 517 static int
 518 bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
 519                int encrypt, const u8 *own_addr)
 520 {
 521         struct bsd_driver_data *drv = priv;
 522
 523         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", data, data_len);
 524
 525         return l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, data,
 526                               data_len);
 527 }
 528
 529 static int
 530 bsd_set_freq(void *priv, struct hostapd_freq_params *freq)
 531 {
 532         struct bsd_driver_data *drv = priv;
 533 #ifdef SIOCS80211CHANNEL
 534         struct ieee80211chanreq creq;
 535 #endif /* SIOCS80211CHANNEL */
 536         u32 mode;
 537         int channel = freq->channel;
 538
 539         if (channel < 14)
 540                 mode = IFM_IEEE80211_11G;
 541         else if (channel == 14)
 542                 mode = IFM_IEEE80211_11B;
 543         else
 544                 mode = IFM_IEEE80211_11A;
 545         if (bsd_set_mediaopt(drv, IFM_MMASK, mode) < 0) {
 546                 wpa_printf(MSG_ERROR, "%s: failed to set modulation mode",
 547                            __func__);
 548                 return -1;
 549         }
 550
 551 #ifdef SIOCS80211CHANNEL
 552         os_memset(&creq, 0, sizeof(creq));
 553         os_strlcpy(creq.i_name, drv->ifname, sizeof(creq.i_name));
 554         creq.i_channel = (u_int16_t)channel;
 555         return ioctl(drv->sock, SIOCS80211CHANNEL, &creq);
 556 #else /* SIOCS80211CHANNEL */
 557         return set80211param(priv, IEEE80211_IOC_CHANNEL, channel);
 558 #endif /* SIOCS80211CHANNEL */
 559 }
 560
 561 static int
 562 bsd_set_opt_ie(void *priv, const u8 *ie, size_t ie_len)
 563 {
 564 #ifdef IEEE80211_IOC_APPIE
 565         wpa_printf(MSG_DEBUG, "%s: set WPA+RSN ie (len %lu)", __func__,
 566                    (unsigned long)ie_len);
 567         return bsd_set80211(priv, IEEE80211_IOC_APPIE, IEEE80211_APPIE_WPA,
 568                             ie, ie_len);
 569 #endif /* IEEE80211_IOC_APPIE */
 570         return 0;
 571 }
 572
 573 static int
 574 rtbuf_len(void)
 575 {
 576         size_t len;
 577
 578         int mib[6] = {CTL_NET, AF_ROUTE, 0, AF_INET6, NET_RT_DUMP, 0};
 579
 580         if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
 581                 wpa_printf(MSG_ERROR, "%s failed: %s\n", __func__,
 582                            strerror(errno));
 583                 return -1;
 584         }
 585
 586         return len;
 587 }
 588
 589 #ifdef HOSTAPD
 590
 591 /*
 592  * Avoid conflicts with hostapd definitions by undefining couple of defines
 593  * from net80211 header files.
 594  */
 595 #undef RSN_VERSION
 596 #undef WPA_VERSION
 597 #undef WPA_OUI_TYPE
 598
 599 static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
 600                           int reason_code);
 601
 602 static const char *
 603 ether_sprintf(const u8 *addr)
 604 {
 605         static char buf[sizeof(MACSTR)];
 606
 607         if (addr != NULL)
 608                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 609         else
 610                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 611         return buf;
 612 }
 613
 614 static int
 615 bsd_set_privacy(void *priv, int enabled)
 616 {
 617         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 618
 619         return set80211param(priv, IEEE80211_IOC_PRIVACY, enabled);
 620 }
 621
 622 static int
 623 bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 624                u8 *seq)
 625 {
 626         struct ieee80211req_key wk;
 627
 628         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 629                    __func__, ether_sprintf(addr), idx);
 630
 631         memset(&wk, 0, sizeof(wk));
 632         if (addr == NULL)
 633                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 634         else
 635                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 636         wk.ik_keyix = idx;
 637
 638         if (get80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
 639                 printf("Failed to get encryption.\n");
 640                 return -1;
 641         }
 642
 643 #ifdef WORDS_BIGENDIAN
 644         {
 645                 /*
 646                  * wk.ik_keytsc is in host byte order (big endian), need to
 647                  * swap it to match with the byte order used in WPA.
 648                  */
 649                 int i;
 650                 u8 tmp[WPA_KEY_RSC_LEN];
 651                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 652                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 653                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 654                 }
 655         }
 656 #else /* WORDS_BIGENDIAN */
 657         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 658 #endif /* WORDS_BIGENDIAN */
 659         return 0;
 660 }
 661
 662
 663 static int
 664 bsd_flush(void *priv)
 665 {
 666         u8 allsta[IEEE80211_ADDR_LEN];
 667
 668         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 669         return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
 670 }
 671
 672
 673 static int
 674 bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 675                          const u8 *addr)
 676 {
 677         struct ieee80211req_sta_stats stats;
 678
 679         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 680         if (get80211var(priv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats))
 681             > 0) {
 682                 /* XXX? do packets counts include non-data frames? */
 683                 data->rx_packets = stats.is_stats.ns_rx_data;
 684                 data->rx_bytes = stats.is_stats.ns_rx_bytes;
 685                 data->tx_packets = stats.is_stats.ns_tx_data;
 686                 data->tx_bytes = stats.is_stats.ns_tx_bytes;
 687         }
 688         return 0;
 689 }
 690
 691 static int
 692 bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
 693 {
 694         return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
 695                                    addr);
 696 }
 697
 698 static int
 699 bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
 700                  int reason_code)
 701 {
 702         return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code,
 703                                    addr);
 704 }
 705
 706 static void
 707 bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
 708 {
 709         struct bsd_driver_data *drv = ctx;
 710         char *buf;
 711         struct if_announcemsghdr *ifan;
 712         struct rt_msghdr *rtm;
 713         struct ieee80211_michael_event *mic;
 714         struct ieee80211_join_event *join;
 715         struct ieee80211_leave_event *leave;
 716         int n, len;
 717         union wpa_event_data data;
 718
 719         len = rtbuf_len();
 720         if (len < 0)
 721                 return;
 722
 723         buf = os_malloc(len);
 724         if (buf == NULL) {
 725                 wpa_printf(MSG_ERROR, "%s os_malloc() failed\n", __func__);
 726                 return;
 727         }
 728
 729         n = read(sock, buf, len);
 730         if (n < 0) {
 731                 if (errno != EINTR && errno != EAGAIN)
 732                         wpa_printf(MSG_ERROR, "%s read() failed: %s\n",
 733                                    __func__, strerror(errno));
 734                 os_free(buf);
 735                 return;
 736         }
 737
 738         rtm = (struct rt_msghdr *) buf;
 739         if (rtm->rtm_version != RTM_VERSION) {
 740                 wpa_printf(MSG_DEBUG, "Invalid routing message version=%d",
 741                            rtm->rtm_version);
 742                 os_free(buf);
 743                 return;
 744         }
 745         ifan = (struct if_announcemsghdr *) rtm;
 746         switch (rtm->rtm_type) {
 747         case RTM_IEEE80211:
 748                 switch (ifan->ifan_what) {
 749                 case RTM_IEEE80211_ASSOC:
 750                 case RTM_IEEE80211_REASSOC:
 751                 case RTM_IEEE80211_DISASSOC:
 752                 case RTM_IEEE80211_SCAN:
 753                         break;
 754                 case RTM_IEEE80211_LEAVE:
 755                         leave = (struct ieee80211_leave_event *) &ifan[1];
 756                         drv_event_disassoc(drv->hapd, leave->iev_addr);
 757                         break;
 758                 case RTM_IEEE80211_JOIN:
 759 #ifdef RTM_IEEE80211_REJOIN
 760                 case RTM_IEEE80211_REJOIN:
 761 #endif
 762                         join = (struct ieee80211_join_event *) &ifan[1];
 763                         bsd_new_sta(drv, drv->hapd, join->iev_addr);
 764                         break;
 765                 case RTM_IEEE80211_REPLAY:
 766                         /* ignore */
 767                         break;
 768                 case RTM_IEEE80211_MICHAEL:
 769                         mic = (struct ieee80211_michael_event *) &ifan[1];
 770                         wpa_printf(MSG_DEBUG,
 771                                 "Michael MIC failure wireless event: "
 772                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
 773                                 MAC2STR(mic->iev_src));
 774                         os_memset(&data, 0, sizeof(data));
 775                         data.michael_mic_failure.unicast = 1;
 776                         data.michael_mic_failure.src = mic->iev_src;
 777                         wpa_supplicant_event(drv->hapd,
 778                                              EVENT_MICHAEL_MIC_FAILURE, &data);
 779                         break;
 780                 }
 781                 break;
 782         }
 783         os_free(buf);
 784 }
 785
 786 static void
 787 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
 788 {
 789         struct bsd_driver_data *drv = ctx;
 790         drv_event_eapol_rx(drv->hapd, src_addr, buf, len);
 791 }
 792
 793 static void *
 794 bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
 795 {
 796         struct bsd_driver_data *drv;
 797
 798         drv = os_zalloc(sizeof(struct bsd_driver_data));
 799         if (drv == NULL) {
 800                 printf("Could not allocate memory for bsd driver data\n");
 801                 goto bad;
 802         }
 803
 804         drv->hapd = hapd;
 805         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
 806         if (drv->sock < 0) {
 807                 perror("socket[PF_INET,SOCK_DGRAM]");
 808                 goto bad;
 809         }
 810         os_strlcpy(drv->ifname, params->ifname, sizeof(drv->ifname));
 811
 812         drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
 813                                         handle_read, drv, 0);
 814         if (drv->sock_xmit == NULL)
 815                 goto bad;
 816         if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
 817                 goto bad;
 818
 819         /* mark down during setup */
 820         if (bsd_ctrl_iface(drv, 0) < 0)
 821                 goto bad;
 822
 823         drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
 824         if (drv->route < 0) {
 825                 perror("socket(PF_ROUTE,SOCK_RAW)");
 826                 goto bad;
 827         }
 828         eloop_register_read_sock(drv->route, bsd_wireless_event_receive, drv,
 829                                  NULL);
 830
 831         if (bsd_set_mediaopt(drv, IFM_OMASK, IFM_IEEE80211_HOSTAP) < 0) {
 832                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
 833                            __func__);
 834                 goto bad;
 835         }
 836
 837         return drv;
 838 bad:
 839         if (drv->sock_xmit != NULL)
 840                 l2_packet_deinit(drv->sock_xmit);
 841         if (drv->sock >= 0)
 842                 close(drv->sock);
 843         if (drv != NULL)
 844                 os_free(drv);
 845         return NULL;
 846 }
 847
 848
 849 static void
 850 bsd_deinit(void *priv)
 851 {
 852         struct bsd_driver_data *drv = priv;
 853
 854         if (drv->route >= 0) {
 855                 eloop_unregister_read_sock(drv->route);
 856                 close(drv->route);
 857         }
 858         bsd_ctrl_iface(drv, 0);
 859         if (drv->sock >= 0)
 860                 close(drv->sock);
 861         if (drv->sock_xmit != NULL)
 862                 l2_packet_deinit(drv->sock_xmit);
 863         os_free(drv);
 864 }
 865
 866 #else /* HOSTAPD */
 867
 868 static int
 869 get80211param(struct bsd_driver_data *drv, int op)
 870 {
 871         struct ieee80211req ireq;
 872
 873         if (bsd_get80211(drv, &ireq, op, NULL, 0) < 0)
 874                 return -1;
 875         return ireq.i_val;
 876 }
 877
 878 static int
 879 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
 880 {
 881         struct bsd_driver_data *drv = priv;
 882 #ifdef SIOCG80211BSSID
 883         struct ieee80211_bssid bs;
 884
 885         os_strlcpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
 886         if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
 887                 return -1;
 888         os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
 889         return 0;
 890 #else
 891         return get80211var(drv, IEEE80211_IOC_BSSID,
 892                 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
 893 #endif
 894 }
 895
 896 static int
 897 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
 898 {
 899         struct bsd_driver_data *drv = priv;
 900         return bsd_get_ssid(drv, ssid, 0);
 901 }
 902
 903 static int
 904 wpa_driver_bsd_set_wpa_ie(struct bsd_driver_data *drv, const u8 *wpa_ie,
 905                           size_t wpa_ie_len)
 906 {
 907 #ifdef IEEE80211_IOC_APPIE
 908         return bsd_set_opt_ie(drv, wpa_ie, wpa_ie_len);
 909 #else /* IEEE80211_IOC_APPIE */
 910         return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
 911 #endif /* IEEE80211_IOC_APPIE */
 912 }
 913
 914 static int
 915 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
 916 {
 917         int ret = 0;
 918
 919         wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
 920                 __FUNCTION__, wpa, privacy);
 921
 922         if (!wpa && wpa_driver_bsd_set_wpa_ie(priv, NULL, 0) < 0)
 923                 ret = -1;
 924         if (set80211param(priv, IEEE80211_IOC_PRIVACY, privacy) < 0)
 925                 ret = -1;
 926         if (set80211param(priv, IEEE80211_IOC_WPA, wpa) < 0)
 927                 ret = -1;
 928
 929         return ret;
 930 }
 931
 932 static int
 933 wpa_driver_bsd_set_wpa(void *priv, int enabled)
 934 {
 935         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
 936
 937         return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
 938 }
 939
 940 static int
 941 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
 942 {
 943         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 944         return set80211param(priv, IEEE80211_IOC_COUNTERMEASURES, enabled);
 945 }
 946
 947
 948 static int
 949 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
 950 {
 951         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 952         return set80211param(priv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
 953 }
 954
 955 static int
 956 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
 957 {
 958         return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
 959                                    addr);
 960 }
 961
 962 static int
 963 wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
 964 {
 965         return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code,
 966                                    addr);
 967 }
 968
 969 static int
 970 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
 971 {
 972         int authmode;
 973
 974         if ((auth_alg & WPA_AUTH_ALG_OPEN) &&
 975             (auth_alg & WPA_AUTH_ALG_SHARED))
 976                 authmode = IEEE80211_AUTH_AUTO;
 977         else if (auth_alg & WPA_AUTH_ALG_SHARED)
 978                 authmode = IEEE80211_AUTH_SHARED;
 979         else
 980                 authmode = IEEE80211_AUTH_OPEN;
 981
 982         return set80211param(priv, IEEE80211_IOC_AUTHMODE, authmode);
 983 }
 984
 985 static void
 986 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
 987 {
 988         struct bsd_driver_data *drv = ctx;
 989
 990         drv_event_eapol_rx(drv->ctx, src_addr, buf, len);
 991 }
 992
 993 static int
 994 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
 995 {
 996         struct bsd_driver_data *drv = priv;
 997         struct ieee80211req_mlme mlme;
 998         u32 mode;
 999         int privacy;
1000         int ret = 0;
1001
1002         wpa_printf(MSG_DEBUG,
1003                 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1004                 , __func__
1005                    , (unsigned int) params->ssid_len, params->ssid
1006                 , (unsigned int) params->wpa_ie_len
1007                 , params->pairwise_suite
1008                 , params->group_suite
1009                 , params->key_mgmt_suite
1010         );
1011
1012         switch (params->mode) {
1013         case IEEE80211_MODE_INFRA:
1014                 mode = 0 /* STA */;
1015                 break;
1016         case IEEE80211_MODE_IBSS:
1017                 mode = IFM_IEEE80211_IBSS;
1018                 break;
1019         case IEEE80211_MODE_AP:
1020                 mode = IFM_IEEE80211_HOSTAP;
1021                 break;
1022         default:
1023                 wpa_printf(MSG_ERROR, "%s: unknown operation mode", __func__);
1024                 return -1;
1025         }
1026         if (bsd_set_mediaopt(drv, IFM_OMASK, mode) < 0) {
1027                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1028                            __func__);
1029                 return -1;
1030         }
1031
1032         if (params->mode == IEEE80211_MODE_AP) {
1033                 drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
1034                                                 handle_read, drv, 0);
1035                 if (drv->sock_xmit == NULL)
1036                         return -1;
1037                 drv->is_ap = 1;
1038                 return 0;
1039         }
1040
1041         if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1042             < 0)
1043                 ret = -1;
1044         if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1045                 ret = -1;
1046         /* XXX error handling is wrong but unclear what to do... */
1047         if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1048                 return -1;
1049
1050         privacy = !(params->pairwise_suite == CIPHER_NONE &&
1051             params->group_suite == CIPHER_NONE &&
1052             params->key_mgmt_suite == KEY_MGMT_NONE &&
1053             params->wpa_ie_len == 0);
1054         wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1055
1056         if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1057                 return -1;
1058
1059         if (params->wpa_ie_len &&
1060             set80211param(drv, IEEE80211_IOC_WPA,
1061                           params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1062                 return -1;
1063
1064         os_memset(&mlme, 0, sizeof(mlme));
1065         mlme.im_op = IEEE80211_MLME_ASSOC;
1066         if (params->ssid != NULL)
1067                 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1068         mlme.im_ssid_len = params->ssid_len;
1069         if (params->bssid != NULL)
1070                 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1071         if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1072                 return -1;
1073         return ret;
1074 }
1075
1076 static int
1077 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
1078 {
1079         struct bsd_driver_data *drv = priv;
1080 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1081         struct ieee80211_scan_req sr;
1082         int i;
1083 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1084
1085         if (bsd_set_mediaopt(drv, IFM_OMASK, 0 /* STA */) < 0) {
1086                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1087                            __func__);
1088                 return -1;
1089         }
1090
1091         if (set80211param(drv, IEEE80211_IOC_ROAMING,
1092                           IEEE80211_ROAMING_MANUAL) < 0) {
1093                 wpa_printf(MSG_ERROR, "%s: failed to set "
1094                            "wpa_supplicant-based roaming: %s", __func__,
1095                            strerror(errno));
1096                 return -1;
1097         }
1098
1099         if (wpa_driver_bsd_set_wpa(drv, 1) < 0) {
1100                 wpa_printf(MSG_ERROR, "%s: failed to set wpa: %s", __func__,
1101                            strerror(errno));
1102                 return -1;
1103         }
1104
1105         /* NB: interface must be marked UP to do a scan */
1106         if (bsd_ctrl_iface(drv, 1) < 0)
1107                 return -1;
1108
1109 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1110         os_memset(&sr, 0, sizeof(sr));
1111         sr.sr_flags = IEEE80211_IOC_SCAN_ACTIVE | IEEE80211_IOC_SCAN_ONCE |
1112                 IEEE80211_IOC_SCAN_NOJOIN;
1113         sr.sr_duration = IEEE80211_IOC_SCAN_FOREVER;
1114         if (params->num_ssids > 0) {
1115                 sr.sr_nssid = params->num_ssids;
1116 #if 0
1117                 /* Boundary check is done by upper layer */
1118                 if (sr.sr_nssid > IEEE80211_IOC_SCAN_MAX_SSID)
1119                         sr.sr_nssid = IEEE80211_IOC_SCAN_MAX_SSID;
1120 #endif
1121
1122                 /* NB: check scan cache first */
1123                 sr.sr_flags |= IEEE80211_IOC_SCAN_CHECK;
1124         }
1125         for (i = 0; i < sr.sr_nssid; i++) {
1126                 sr.sr_ssid[i].len = params->ssids[i].ssid_len;
1127                 os_memcpy(sr.sr_ssid[i].ssid, params->ssids[i].ssid,
1128                           sr.sr_ssid[i].len);
1129         }
1130
1131         /* NB: net80211 delivers a scan complete event so no need to poll */
1132         return set80211var(drv, IEEE80211_IOC_SCAN_REQ, &sr, sizeof(sr));
1133 #else /* IEEE80211_IOC_SCAN_MAX_SSID */
1134         /* set desired ssid before scan */
1135         if (bsd_set_ssid(drv, params->ssids[0].ssid,
1136                          params->ssids[0].ssid_len) < 0)
1137                 return -1;
1138
1139         /* NB: net80211 delivers a scan complete event so no need to poll */
1140         return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1141 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1142 }
1143
1144 static void
1145 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1146 {
1147         struct bsd_driver_data *drv = sock_ctx;
1148         char *buf;
1149         struct if_announcemsghdr *ifan;
1150         struct if_msghdr *ifm;
1151         struct rt_msghdr *rtm;
1152         union wpa_event_data event;
1153         struct ieee80211_michael_event *mic;
1154         struct ieee80211_leave_event *leave;
1155         struct ieee80211_join_event *join;
1156         int n, len;
1157
1158         len = rtbuf_len();
1159         if (len < 0)
1160                 return;
1161
1162         buf = os_malloc(len);
1163         if (buf == NULL) {
1164                 wpa_printf(MSG_ERROR, "%s os_malloc() failed\n", __func__);
1165                 return;
1166         }
1167
1168         n = read(sock, buf, len);
1169         if (n < 0) {
1170                 if (errno != EINTR && errno != EAGAIN)
1171                         wpa_printf(MSG_ERROR, "%s read() failed: %s\n",
1172                                    __func__, strerror(errno));
1173                 os_free(buf);
1174                 return;
1175         }
1176
1177         rtm = (struct rt_msghdr *) buf;
1178         if (rtm->rtm_version != RTM_VERSION) {
1179                 wpa_printf(MSG_DEBUG, "Invalid routing message version=%d",
1180                            rtm->rtm_version);
1181                 os_free(buf);
1182                 return;
1183         }
1184         os_memset(&event, 0, sizeof(event));
1185         switch (rtm->rtm_type) {
1186         case RTM_IFANNOUNCE:
1187                 ifan = (struct if_announcemsghdr *) rtm;
1188                 if (ifan->ifan_index != drv->ifindex)
1189                         break;
1190                 os_strlcpy(event.interface_status.ifname, drv->ifname,
1191                            sizeof(event.interface_status.ifname));
1192                 switch (ifan->ifan_what) {
1193                 case IFAN_DEPARTURE:
1194                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1195                 default:
1196                         os_free(buf);
1197                         return;
1198                 }
1199                 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1200                            event.interface_status.ifname,
1201                            ifan->ifan_what == IFAN_DEPARTURE ?
1202                                 "removed" : "added");
1203                 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1204                 break;
1205         case RTM_IEEE80211:
1206                 ifan = (struct if_announcemsghdr *) rtm;
1207                 if (ifan->ifan_index != drv->ifindex)
1208                         break;
1209                 switch (ifan->ifan_what) {
1210                 case RTM_IEEE80211_ASSOC:
1211                 case RTM_IEEE80211_REASSOC:
1212                         if (drv->is_ap)
1213                                 break;
1214                         wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1215                         break;
1216                 case RTM_IEEE80211_DISASSOC:
1217                         if (drv->is_ap)
1218                                 break;
1219                         wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1220                         break;
1221                 case RTM_IEEE80211_SCAN:
1222                         if (drv->is_ap)
1223                                 break;
1224                         wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1225                         break;
1226                 case RTM_IEEE80211_LEAVE:
1227                         leave = (struct ieee80211_leave_event *) &ifan[1];
1228                         drv_event_disassoc(ctx, leave->iev_addr);
1229                         break;
1230                 case RTM_IEEE80211_JOIN:
1231 #ifdef RTM_IEEE80211_REJOIN
1232                 case RTM_IEEE80211_REJOIN:
1233 #endif
1234                         join = (struct ieee80211_join_event *) &ifan[1];
1235                         bsd_new_sta(drv, ctx, join->iev_addr);
1236                         break;
1237                 case RTM_IEEE80211_REPLAY:
1238                         /* ignore */
1239                         break;
1240                 case RTM_IEEE80211_MICHAEL:
1241                         mic = (struct ieee80211_michael_event *) &ifan[1];
1242                         wpa_printf(MSG_DEBUG,
1243                                 "Michael MIC failure wireless event: "
1244                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1245                                 MAC2STR(mic->iev_src));
1246
1247                         os_memset(&event, 0, sizeof(event));
1248                         event.michael_mic_failure.unicast =
1249                                 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1250                         wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1251                                 &event);
1252                         break;
1253                 }
1254                 break;
1255         case RTM_IFINFO:
1256                 ifm = (struct if_msghdr *) rtm;
1257                 if (ifm->ifm_index != drv->ifindex)
1258                         break;
1259                 if ((rtm->rtm_flags & RTF_UP) == 0) {
1260                         os_strlcpy(event.interface_status.ifname, drv->ifname,
1261                                    sizeof(event.interface_status.ifname));
1262                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1263                         wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1264                                    event.interface_status.ifname);
1265                         wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1266                 }
1267                 break;
1268         }
1269         os_free(buf);
1270 }
1271
1272 static void
1273 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1274                               struct ieee80211req_scan_result *sr)
1275 {
1276         struct wpa_scan_res *result, **tmp;
1277         size_t extra_len;
1278         u8 *pos;
1279
1280         extra_len = 2 + sr->isr_ssid_len;
1281         extra_len += 2 + sr->isr_nrates;
1282         extra_len += 3; /* ERP IE */
1283         extra_len += sr->isr_ie_len;
1284
1285         result = os_zalloc(sizeof(*result) + extra_len);
1286         if (result == NULL)
1287                 return;
1288         os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1289         result->freq = sr->isr_freq;
1290         result->beacon_int = sr->isr_intval;
1291         result->caps = sr->isr_capinfo;
1292         result->qual = sr->isr_rssi;
1293         result->noise = sr->isr_noise;
1294
1295         pos = (u8 *)(result + 1);
1296
1297         *pos++ = WLAN_EID_SSID;
1298         *pos++ = sr->isr_ssid_len;
1299         os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1300         pos += sr->isr_ssid_len;
1301
1302         /*
1303          * Deal all rates as supported rate.
1304          * Because net80211 doesn't report extended supported rate or not.
1305          */
1306         *pos++ = WLAN_EID_SUPP_RATES;
1307         *pos++ = sr->isr_nrates;
1308         os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1309         pos += sr->isr_nrates;
1310
1311         *pos++ = WLAN_EID_ERP_INFO;
1312         *pos++ = 1;
1313         *pos++ = sr->isr_erp;
1314
1315         os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1316         pos += sr->isr_ie_len;
1317
1318         result->ie_len = pos - (u8 *)(result + 1);
1319
1320         tmp = os_realloc(res->res,
1321                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1322         if (tmp == NULL) {
1323                 os_free(result);
1324                 return;
1325         }
1326         tmp[res->num++] = result;
1327         res->res = tmp;
1328 }
1329
1330 struct wpa_scan_results *
1331 wpa_driver_bsd_get_scan_results2(void *priv)
1332 {
1333         struct ieee80211req_scan_result *sr;
1334         struct wpa_scan_results *res;
1335         int len, rest;
1336         uint8_t buf[24*1024], *pos;
1337
1338         len = get80211var(priv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1339         if (len < 0)
1340                 return NULL;
1341
1342         res = os_zalloc(sizeof(*res));
1343         if (res == NULL)
1344                 return NULL;
1345
1346         pos = buf;
1347         rest = len;
1348         while (rest >= sizeof(struct ieee80211req_scan_result)) {
1349                 sr = (struct ieee80211req_scan_result *)pos;
1350                 wpa_driver_bsd_add_scan_entry(res, sr);
1351                 pos += sr->isr_len;
1352                 rest -= sr->isr_len;
1353         }
1354
1355         wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1356                    len, (unsigned long)res->num);
1357
1358         return res;
1359 }
1360
1361 static int wpa_driver_bsd_capa(struct bsd_driver_data *drv)
1362 {
1363 #ifdef IEEE80211_IOC_DEVCAPS
1364 /* kernel definitions copied from net80211/ieee80211_var.h */
1365 #define IEEE80211_CIPHER_WEP            0
1366 #define IEEE80211_CIPHER_TKIP           1
1367 #define IEEE80211_CIPHER_AES_CCM        3
1368 #define IEEE80211_CRYPTO_WEP            (1<<IEEE80211_CIPHER_WEP)
1369 #define IEEE80211_CRYPTO_TKIP           (1<<IEEE80211_CIPHER_TKIP)
1370 #define IEEE80211_CRYPTO_AES_CCM        (1<<IEEE80211_CIPHER_AES_CCM)
1371 #define IEEE80211_C_HOSTAP      0x00000400      /* CAPABILITY: HOSTAP avail */
1372 #define IEEE80211_C_WPA1        0x00800000      /* CAPABILITY: WPA1 avail */
1373 #define IEEE80211_C_WPA2        0x01000000      /* CAPABILITY: WPA2 avail */
1374         struct ieee80211_devcaps_req devcaps;
1375
1376         if (get80211var(drv, IEEE80211_IOC_DEVCAPS, &devcaps,
1377                         sizeof(devcaps)) < 0) {
1378                 wpa_printf(MSG_ERROR, "failed to IEEE80211_IOC_DEVCAPS: %s",
1379                            strerror(errno));
1380                 return -1;
1381         }
1382
1383         wpa_printf(MSG_DEBUG, "%s: drivercaps=0x%08x,cryptocaps=0x%08x",
1384                    __func__, devcaps.dc_drivercaps, devcaps.dc_cryptocaps);
1385
1386         if (devcaps.dc_drivercaps & IEEE80211_C_WPA1)
1387                 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1388                         WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1389         if (devcaps.dc_drivercaps & IEEE80211_C_WPA2)
1390                 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1391                         WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1392
1393         if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_WEP)
1394                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1395                         WPA_DRIVER_CAPA_ENC_WEP104;
1396         if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_TKIP)
1397                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1398         if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_AES_CCM)
1399                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1400
1401         if (devcaps.dc_drivercaps & IEEE80211_C_HOSTAP)
1402                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1403 #undef IEEE80211_CIPHER_WEP
1404 #undef IEEE80211_CIPHER_TKIP
1405 #undef IEEE80211_CIPHER_AES_CCM
1406 #undef IEEE80211_CRYPTO_WEP
1407 #undef IEEE80211_CRYPTO_TKIP
1408 #undef IEEE80211_CRYPTO_AES_CCM
1409 #undef IEEE80211_C_HOSTAP
1410 #undef IEEE80211_C_WPA1
1411 #undef IEEE80211_C_WPA2
1412 #else /* IEEE80211_IOC_DEVCAPS */
1413         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1414         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1415                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1416                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1417                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1418         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1419                 WPA_DRIVER_CAPA_ENC_WEP104 |
1420                 WPA_DRIVER_CAPA_ENC_TKIP |
1421                 WPA_DRIVER_CAPA_ENC_CCMP;
1422         drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1423 #endif /* IEEE80211_IOC_DEVCAPS */
1424 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1425         drv->capa.max_scan_ssids = IEEE80211_IOC_SCAN_MAX_SSID;
1426 #else /* IEEE80211_IOC_SCAN_MAX_SSID */
1427         drv->capa.max_scan_ssids = 1;
1428 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1429         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1430                 WPA_DRIVER_AUTH_SHARED |
1431                 WPA_DRIVER_AUTH_LEAP;
1432         return 0;
1433 }
1434
1435 static void *
1436 wpa_driver_bsd_init(void *ctx, const char *ifname)
1437 {
1438 #define GETPARAM(drv, param, v) \
1439         (((v) = get80211param(drv, param)) != -1)
1440         struct bsd_driver_data *drv;
1441
1442         drv = os_zalloc(sizeof(*drv));
1443         if (drv == NULL)
1444                 return NULL;
1445         /*
1446          * NB: We require the interface name be mappable to an index.
1447          *     This implies we do not support having wpa_supplicant
1448          *     wait for an interface to appear.  This seems ok; that
1449          *     doesn't belong here; it's really the job of devd.
1450          */
1451         drv->ifindex = if_nametoindex(ifname);
1452         if (drv->ifindex == 0) {
1453                 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1454                            __func__, ifname);
1455                 goto fail1;
1456         }
1457         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1458         if (drv->sock < 0)
1459                 goto fail1;
1460         drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1461         if (drv->route < 0)
1462                 goto fail;
1463         eloop_register_read_sock(drv->route,
1464                 wpa_driver_bsd_event_receive, ctx, drv);
1465
1466         drv->ctx = ctx;
1467         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1468
1469         /* Down interface during setup. */
1470         if (bsd_ctrl_iface(drv, 0) < 0)
1471                 goto fail;
1472
1473         if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1474                 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1475                         __func__, strerror(errno));
1476                 goto fail;
1477         }
1478         if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1479                 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1480                         __func__, strerror(errno));
1481                 goto fail;
1482         }
1483         if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1484                 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1485                         __func__, strerror(errno));
1486                 goto fail;
1487         }
1488
1489         if (wpa_driver_bsd_capa(drv))
1490                 goto fail;
1491
1492         return drv;
1493 fail:
1494         close(drv->sock);
1495 fail1:
1496         os_free(drv);
1497         return NULL;
1498 #undef GETPARAM
1499 }
1500
1501 static void
1502 wpa_driver_bsd_deinit(void *priv)
1503 {
1504         struct bsd_driver_data *drv = priv;
1505
1506         wpa_driver_bsd_set_wpa(drv, 0);
1507         eloop_unregister_read_sock(drv->route);
1508
1509         /* NB: mark interface down */
1510         bsd_ctrl_iface(drv, 0);
1511
1512         wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1513         if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1514                 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1515                         __func__);
1516
1517         if (drv->sock_xmit != NULL)
1518                 l2_packet_deinit(drv->sock_xmit);
1519         (void) close(drv->route);               /* ioctl socket */
1520         (void) close(drv->sock);                /* event socket */
1521         os_free(drv);
1522 }
1523
1524 static int
1525 wpa_driver_bsd_get_capa(void *priv, struct wpa_driver_capa *capa)
1526 {
1527         struct bsd_driver_data *drv = priv;
1528
1529         os_memcpy(capa, &drv->capa, sizeof(*capa));
1530         return 0;
1531 }
1532 #endif /* HOSTAPD */
1533
1534
1535 const struct wpa_driver_ops wpa_driver_bsd_ops = {
1536         .name                   = "bsd",
1537         .desc                   = "BSD 802.11 support",
1538 #ifdef HOSTAPD
1539         .hapd_init              = bsd_init,
1540         .hapd_deinit            = bsd_deinit,
1541         .set_privacy            = bsd_set_privacy,
1542         .get_seqnum             = bsd_get_seqnum,
1543         .flush                  = bsd_flush,
1544         .read_sta_data          = bsd_read_sta_driver_data,
1545         .sta_disassoc           = bsd_sta_disassoc,
1546         .sta_deauth             = bsd_sta_deauth,
1547 #else /* HOSTAPD */
1548         .init                   = wpa_driver_bsd_init,
1549         .deinit                 = wpa_driver_bsd_deinit,
1550         .get_bssid              = wpa_driver_bsd_get_bssid,
1551         .get_ssid               = wpa_driver_bsd_get_ssid,
1552         .set_countermeasures    = wpa_driver_bsd_set_countermeasures,
1553         .scan2                  = wpa_driver_bsd_scan,
1554         .get_scan_results2      = wpa_driver_bsd_get_scan_results2,
1555         .deauthenticate         = wpa_driver_bsd_deauthenticate,
1556         .disassociate           = wpa_driver_bsd_disassociate,
1557         .associate              = wpa_driver_bsd_associate,
1558         .get_capa               = wpa_driver_bsd_get_capa,
1559 #endif /* HOSTAPD */
1560         .set_freq               = bsd_set_freq,
1561         .set_key                = bsd_set_key,
1562         .set_ieee8021x          = bsd_set_ieee8021x,
1563         .hapd_set_ssid          = bsd_set_ssid,
1564         .hapd_get_ssid          = bsd_get_ssid,
1565         .hapd_send_eapol        = bsd_send_eapol,
1566         .sta_set_flags          = bsd_set_sta_authorized,
1567         .set_generic_elem       = bsd_set_opt_ie,
1568 };