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 #include <net/if_media.h>
  26
  27 #ifdef __NetBSD__
  28 #include <net/if_ether.h>
  29 #else
  30 #include <net/ethernet.h>
  31 #endif
  32 #include <net/route.h>
  33
  34 #ifdef __DragonFly__
  35 #include <netproto/802_11/ieee80211_ioctl.h>
  36 #include <netproto/802_11/ieee80211_dragonfly.h>
  37 #else /* __DragonFly__ */
  38 #ifdef __GLIBC__
  39 #include <netinet/ether.h>
  40 #endif /* __GLIBC__ */
  41 #include <net80211/ieee80211.h>
  42 #include <net80211/ieee80211_ioctl.h>
  43 #include <net80211/ieee80211_crypto.h>
  44 #endif /* __DragonFly__ || __GLIBC__ */
  45 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
  46 #include <net80211/ieee80211_freebsd.h>
  47 #endif
  48 #if __NetBSD__
  49 #include <net80211/ieee80211_netbsd.h>
  50 #endif
  51
  52 #include "l2_packet/l2_packet.h"
  53
  54 struct bsd_driver_data {
  55         struct hostapd_data *hapd;      /* back pointer */
  56
  57         int     sock;                   /* open socket for 802.11 ioctls */
  58         struct l2_packet_data *sock_xmit;/* raw packet xmit socket */
  59         int     route;                  /* routing socket for events */
  60         char    ifname[IFNAMSIZ+1];     /* interface name */
  61         unsigned int ifindex;           /* interface index */
  62         void    *ctx;
  63         struct wpa_driver_capa capa;    /* driver capability */
  64         int     is_ap;                  /* Access point mode */
  65         int     prev_roaming;   /* roaming state to restore on deinit */
  66         int     prev_privacy;   /* privacy state to restore on deinit */
  67         int     prev_wpa;       /* wpa state to restore on deinit */
  68 };
  69
  70 /* Generic functions for hostapd and wpa_supplicant */
  71
  72 static int
  73 bsd_set80211(void *priv, int op, int val, const void *arg, int arg_len)
  74 {
  75         struct bsd_driver_data *drv = priv;
  76         struct ieee80211req ireq;
  77
  78         os_memset(&ireq, 0, sizeof(ireq));
  79         os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
  80         ireq.i_type = op;
  81         ireq.i_val = val;
  82         ireq.i_data = (void *) arg;
  83         ireq.i_len = arg_len;
  84
  85         if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
  86                 wpa_printf(MSG_ERROR, "ioctl[SIOCS80211, op=%u, val=%u, "
  87                            "arg_len=%u]: %s", op, val, arg_len,
  88                            strerror(errno));
  89                 return -1;
  90         }
  91         return 0;
  92 }
  93
  94 static int
  95 bsd_get80211(void *priv, struct ieee80211req *ireq, int op, void *arg,
  96              int arg_len)
  97 {
  98         struct bsd_driver_data *drv = priv;
  99
 100         os_memset(ireq, 0, sizeof(*ireq));
 101         os_strlcpy(ireq->i_name, drv->ifname, sizeof(ireq->i_name));
 102         ireq->i_type = op;
 103         ireq->i_len = arg_len;
 104         ireq->i_data = arg;
 105
 106         if (ioctl(drv->sock, SIOCG80211, ireq) < 0) {
 107                 wpa_printf(MSG_ERROR, "ioctl[SIOCS80211, op=%u, "
 108                            "arg_len=%u]: %s", op, arg_len, strerror(errno));
 109                 return -1;
 110         }
 111         return 0;
 112 }
 113
 114 static int
 115 get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
 116 {
 117         struct ieee80211req ireq;
 118
 119         if (bsd_get80211(drv, &ireq, op, arg, arg_len) < 0)
 120                 return -1;
 121         return ireq.i_len;
 122 }
 123
 124 static int
 125 set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
 126 {
 127         return bsd_set80211(drv, op, 0, arg, arg_len);
 128 }
 129
 130 static int
 131 set80211param(struct bsd_driver_data *drv, int op, int arg)
 132 {
 133         return bsd_set80211(drv, op, arg, NULL, 0);
 134 }
 135
 136 static int
 137 bsd_get_ssid(void *priv, u8 *ssid, int len)
 138 {
 139         struct bsd_driver_data *drv = priv;
 140 #ifdef SIOCG80211NWID
 141         struct ieee80211_nwid nwid;
 142         struct ifreq ifr;
 143
 144         os_memset(&ifr, 0, sizeof(ifr));
 145         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 146         ifr.ifr_data = (void *)&nwid;
 147         if (ioctl(drv->sock, SIOCG80211NWID, &ifr) < 0 ||
 148             nwid.i_len > IEEE80211_NWID_LEN)
 149                 return -1;
 150         os_memcpy(ssid, nwid.i_nwid, nwid.i_len);
 151         return nwid.i_len;
 152 #else
 153         return get80211var(drv, IEEE80211_IOC_SSID, ssid, IEEE80211_NWID_LEN);
 154 #endif
 155 }
 156
 157 static int
 158 bsd_set_ssid(void *priv, const u8 *ssid, int ssid_len)
 159 {
 160         struct bsd_driver_data *drv = priv;
 161 #ifdef SIOCS80211NWID
 162         struct ieee80211_nwid nwid;
 163         struct ifreq ifr;
 164
 165         os_memcpy(nwid.i_nwid, ssid, ssid_len);
 166         nwid.i_len = ssid_len;
 167         os_memset(&ifr, 0, sizeof(ifr));
 168         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 169         ifr.ifr_data = (void *)&nwid;
 170         return ioctl(drv->sock, SIOCS80211NWID, &ifr);
 171 #else
 172         return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len);
 173 #endif
 174 }
 175
 176 static int
 177 bsd_get_if_media(void *priv)
 178 {
 179         struct bsd_driver_data *drv = priv;
 180         struct ifmediareq ifmr;
 181
 182         os_memset(&ifmr, 0, sizeof(ifmr));
 183         os_strlcpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name));
 184
 185         if (ioctl(drv->sock, SIOCGIFMEDIA, &ifmr) < 0) {
 186                 wpa_printf(MSG_ERROR, "%s: SIOCGIFMEDIA %s", __func__,
 187                            strerror(errno));
 188                 return -1;
 189         }
 190
 191         return ifmr.ifm_current;
 192 }
 193
 194 static int
 195 bsd_set_if_media(void *priv, int media)
 196 {
 197         struct bsd_driver_data *drv = priv;
 198         struct ifreq ifr;
 199
 200         os_memset(&ifr, 0, sizeof(ifr));
 201         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 202         ifr.ifr_media = media;
 203
 204         if (ioctl(drv->sock, SIOCSIFMEDIA, &ifr) < 0) {
 205                 wpa_printf(MSG_ERROR, "%s: SIOCSIFMEDIA %s", __func__,
 206                            strerror(errno));
 207                 return -1;
 208         }
 209
 210         return 0;
 211 }
 212
 213 static int
 214 bsd_set_mediaopt(void *priv, uint32_t mask, uint32_t mode)
 215 {
 216         int media = bsd_get_if_media(priv);
 217
 218         if (media < 0)
 219                 return -1;
 220         media &= ~mask;
 221         media |= mode;
 222         if (bsd_set_if_media(priv, media) < 0)
 223                 return -1;
 224         return 0;
 225 }
 226
 227 static int
 228 bsd_del_key(void *priv, const u8 *addr, int key_idx)
 229 {
 230         struct ieee80211req_del_key wk;
 231
 232         os_memset(&wk, 0, sizeof(wk));
 233         if (addr == NULL) {
 234                 wpa_printf(MSG_DEBUG, "%s: key_idx=%d", __func__, key_idx);
 235                 wk.idk_keyix = key_idx;
 236         } else {
 237                 wpa_printf(MSG_DEBUG, "%s: addr=" MACSTR, __func__,
 238                            MAC2STR(addr));
 239                 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 240                 wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */
 241         }
 242
 243         return set80211var(priv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
 244 }
 245
 246 static int
 247 bsd_send_mlme_param(void *priv, const u8 op, const u16 reason, const u8 *addr)
 248 {
 249         struct ieee80211req_mlme mlme;
 250
 251         os_memset(&mlme, 0, sizeof(mlme));
 252         mlme.im_op = op;
 253         mlme.im_reason = reason;
 254         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 255         return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
 256 }
 257
 258 static int
 259 bsd_ctrl_iface(void *priv, int enable)
 260 {
 261         struct bsd_driver_data *drv = priv;
 262         struct ifreq ifr;
 263
 264         os_memset(&ifr, 0, sizeof(ifr));
 265         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 266
 267         if (ioctl(drv->sock, SIOCGIFFLAGS, &ifr) < 0) {
 268                 perror("ioctl[SIOCGIFFLAGS]");
 269                 return -1;
 270         }
 271
 272         if (enable)
 273                 ifr.ifr_flags |= IFF_UP;
 274         else
 275                 ifr.ifr_flags &= ~IFF_UP;
 276
 277         if (ioctl(drv->sock, SIOCSIFFLAGS, &ifr) < 0) {
 278                 perror("ioctl[SIOCSIFFLAGS]");
 279                 return -1;
 280         }
 281
 282         return 0;
 283 }
 284
 285 static int
 286 bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
 287             const unsigned char *addr, int key_idx, int set_tx, const u8 *seq,
 288             size_t seq_len, const u8 *key, size_t key_len)
 289 {
 290         struct ieee80211req_key wk;
 291
 292         wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d "
 293                    "seq_len=%zu key_len=%zu", __func__, alg, addr, key_idx,
 294                    set_tx, seq_len, key_len);
 295
 296         if (alg == WPA_ALG_NONE) {
 297 #ifndef HOSTAPD
 298                 if (addr == NULL ||
 299                     os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
 300                               IEEE80211_ADDR_LEN) == 0)
 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 (os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
 338                               IEEE80211_ADDR_LEN) == 0) {
 339                         wk.ik_flags |= IEEE80211_KEY_GROUP;
 340                         wk.ik_keyix = key_idx;
 341                 } else {
 342                         wk.ik_keyix = key_idx == 0 ? IEEE80211_KEYIX_NONE :
 343                                 key_idx;
 344                 }
 345         }
 346         if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
 347                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 348         wk.ik_keylen = key_len;
 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, u16 channel)
 531 {
 532         struct bsd_driver_data *drv = priv;
 533 #ifdef SIOCS80211CHANNEL
 534         struct ieee80211chanreq creq;
 535 #endif /* SIOCS80211CHANNEL */
 536         u32 mode;
 537
 538         if (channel < 14)
 539                 mode = IFM_IEEE80211_11G;
 540         else if (channel == 14)
 541                 mode = IFM_IEEE80211_11B;
 542         else
 543                 mode = IFM_IEEE80211_11A;
 544         if (bsd_set_mediaopt(drv, IFM_MMASK, mode) < 0) {
 545                 wpa_printf(MSG_ERROR, "%s: failed to set modulation mode",
 546                            __func__);
 547                 return -1;
 548         }
 549
 550 #ifdef SIOCS80211CHANNEL
 551         os_memset(&creq, 0, sizeof(creq));
 552         os_strlcpy(creq.i_name, drv->ifname, sizeof(creq.i_name));
 553         creq.i_channel = channel;
 554         return ioctl(drv->sock, SIOCS80211CHANNEL, &creq);
 555 #else /* SIOCS80211CHANNEL */
 556         return set80211param(priv, IEEE80211_IOC_CHANNEL, channel);
 557 #endif /* SIOCS80211CHANNEL */
 558 }
 559
 560 static int
 561 bsd_set_opt_ie(void *priv, const u8 *ie, size_t ie_len)
 562 {
 563 #ifdef IEEE80211_IOC_APPIE
 564         wpa_printf(MSG_DEBUG, "%s: set WPA+RSN ie (len %lu)", __func__,
 565                    (unsigned long)ie_len);
 566         return bsd_set80211(priv, IEEE80211_IOC_APPIE, IEEE80211_APPIE_WPA,
 567                             ie, ie_len);
 568 #endif /* IEEE80211_IOC_APPIE */
 569         return 0;
 570 }
 571
 572
 573 #ifdef HOSTAPD
 574
 575 /*
 576  * Avoid conflicts with hostapd definitions by undefining couple of defines
 577  * from net80211 header files.
 578  */
 579 #undef RSN_VERSION
 580 #undef WPA_VERSION
 581 #undef WPA_OUI_TYPE
 582
 583 static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
 584                           int reason_code);
 585
 586 static const char *
 587 ether_sprintf(const u8 *addr)
 588 {
 589         static char buf[sizeof(MACSTR)];
 590
 591         if (addr != NULL)
 592                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 593         else
 594                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 595         return buf;
 596 }
 597
 598 static int
 599 bsd_set_privacy(void *priv, int enabled)
 600 {
 601         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 602
 603         return set80211param(priv, IEEE80211_IOC_PRIVACY, enabled);
 604 }
 605
 606 static int
 607 bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 608                u8 *seq)
 609 {
 610         struct ieee80211req_key wk;
 611
 612         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 613                    __func__, ether_sprintf(addr), idx);
 614
 615         memset(&wk, 0, sizeof(wk));
 616         if (addr == NULL)
 617                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 618         else
 619                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 620         wk.ik_keyix = idx;
 621
 622         if (get80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
 623                 printf("Failed to get encryption.\n");
 624                 return -1;
 625         }
 626
 627 #ifdef WORDS_BIGENDIAN
 628         {
 629                 /*
 630                  * wk.ik_keytsc is in host byte order (big endian), need to
 631                  * swap it to match with the byte order used in WPA.
 632                  */
 633                 int i;
 634                 u8 tmp[WPA_KEY_RSC_LEN];
 635                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 636                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 637                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 638                 }
 639         }
 640 #else /* WORDS_BIGENDIAN */
 641         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 642 #endif /* WORDS_BIGENDIAN */
 643         return 0;
 644 }
 645
 646
 647 static int
 648 bsd_flush(void *priv)
 649 {
 650         u8 allsta[IEEE80211_ADDR_LEN];
 651
 652         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 653         return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
 654 }
 655
 656
 657 static int
 658 bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 659                          const u8 *addr)
 660 {
 661         struct ieee80211req_sta_stats stats;
 662
 663         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 664         if (get80211var(priv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats))
 665             > 0) {
 666                 /* XXX? do packets counts include non-data frames? */
 667                 data->rx_packets = stats.is_stats.ns_rx_data;
 668                 data->rx_bytes = stats.is_stats.ns_rx_bytes;
 669                 data->tx_packets = stats.is_stats.ns_tx_data;
 670                 data->tx_bytes = stats.is_stats.ns_tx_bytes;
 671         }
 672         return 0;
 673 }
 674
 675 static int
 676 bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
 677 {
 678         return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
 679                                    addr);
 680 }
 681
 682 static int
 683 bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
 684                  int reason_code)
 685 {
 686         return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code,
 687                                    addr);
 688 }
 689
 690 static void
 691 bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
 692 {
 693         struct bsd_driver_data *drv = ctx;
 694         char buf[2048];
 695         struct if_announcemsghdr *ifan;
 696         struct rt_msghdr *rtm;
 697         struct ieee80211_michael_event *mic;
 698         struct ieee80211_join_event *join;
 699         struct ieee80211_leave_event *leave;
 700         int n;
 701         union wpa_event_data data;
 702
 703         n = read(sock, buf, sizeof(buf));
 704         if (n < 0) {
 705                 if (errno != EINTR && errno != EAGAIN)
 706                         perror("read(PF_ROUTE)");
 707                 return;
 708         }
 709
 710         rtm = (struct rt_msghdr *) buf;
 711         if (rtm->rtm_version != RTM_VERSION) {
 712                 wpa_printf(MSG_DEBUG, "Routing message version %d not "
 713                         "understood\n", rtm->rtm_version);
 714                 return;
 715         }
 716         ifan = (struct if_announcemsghdr *) rtm;
 717         switch (rtm->rtm_type) {
 718         case RTM_IEEE80211:
 719                 switch (ifan->ifan_what) {
 720                 case RTM_IEEE80211_ASSOC:
 721                 case RTM_IEEE80211_REASSOC:
 722                 case RTM_IEEE80211_DISASSOC:
 723                 case RTM_IEEE80211_SCAN:
 724                         break;
 725                 case RTM_IEEE80211_LEAVE:
 726                         leave = (struct ieee80211_leave_event *) &ifan[1];
 727                         drv_event_disassoc(drv->hapd, leave->iev_addr);
 728                         break;
 729                 case RTM_IEEE80211_JOIN:
 730 #ifdef RTM_IEEE80211_REJOIN
 731                 case RTM_IEEE80211_REJOIN:
 732 #endif
 733                         join = (struct ieee80211_join_event *) &ifan[1];
 734                         bsd_new_sta(drv, drv->hapd, join->iev_addr);
 735                         break;
 736                 case RTM_IEEE80211_REPLAY:
 737                         /* ignore */
 738                         break;
 739                 case RTM_IEEE80211_MICHAEL:
 740                         mic = (struct ieee80211_michael_event *) &ifan[1];
 741                         wpa_printf(MSG_DEBUG,
 742                                 "Michael MIC failure wireless event: "
 743                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
 744                                 MAC2STR(mic->iev_src));
 745                         os_memset(&data, 0, sizeof(data));
 746                         data.michael_mic_failure.unicast = 1;
 747                         data.michael_mic_failure.src = mic->iev_src;
 748                         wpa_supplicant_event(drv->hapd,
 749                                              EVENT_MICHAEL_MIC_FAILURE, &data);
 750                         break;
 751                 }
 752                 break;
 753         }
 754 }
 755
 756 static void
 757 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
 758 {
 759         struct bsd_driver_data *drv = ctx;
 760         drv_event_eapol_rx(drv->hapd, src_addr, buf, len);
 761 }
 762
 763 static int
 764 hostapd_bsd_set_freq(void *priv, struct hostapd_freq_params *freq)
 765 {
 766         return bsd_set_freq(priv, freq->channel);
 767 }
 768
 769 static void *
 770 bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
 771 {
 772         struct bsd_driver_data *drv;
 773
 774         drv = os_zalloc(sizeof(struct bsd_driver_data));
 775         if (drv == NULL) {
 776                 printf("Could not allocate memory for bsd driver data\n");
 777                 goto bad;
 778         }
 779
 780         drv->hapd = hapd;
 781         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
 782         if (drv->sock < 0) {
 783                 perror("socket[PF_INET,SOCK_DGRAM]");
 784                 goto bad;
 785         }
 786         os_strlcpy(drv->ifname, params->ifname, sizeof(drv->ifname));
 787
 788         drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
 789                                         handle_read, drv, 0);
 790         if (drv->sock_xmit == NULL)
 791                 goto bad;
 792         if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
 793                 goto bad;
 794
 795         /* mark down during setup */
 796         if (bsd_ctrl_iface(drv, 0) < 0)
 797                 goto bad;
 798
 799         drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
 800         if (drv->route < 0) {
 801                 perror("socket(PF_ROUTE,SOCK_RAW)");
 802                 goto bad;
 803         }
 804         eloop_register_read_sock(drv->route, bsd_wireless_event_receive, drv,
 805                                  NULL);
 806
 807         if (bsd_set_mediaopt(drv, IFM_OMASK, IFM_IEEE80211_HOSTAP) < 0) {
 808                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
 809                            __func__);
 810                 goto bad;
 811         }
 812
 813         return drv;
 814 bad:
 815         if (drv->sock_xmit != NULL)
 816                 l2_packet_deinit(drv->sock_xmit);
 817         if (drv->sock >= 0)
 818                 close(drv->sock);
 819         if (drv != NULL)
 820                 os_free(drv);
 821         return NULL;
 822 }
 823
 824
 825 static void
 826 bsd_deinit(void *priv)
 827 {
 828         struct bsd_driver_data *drv = priv;
 829
 830         if (drv->route >= 0) {
 831                 eloop_unregister_read_sock(drv->route);
 832                 close(drv->route);
 833         }
 834         bsd_ctrl_iface(drv, 0);
 835         if (drv->sock >= 0)
 836                 close(drv->sock);
 837         if (drv->sock_xmit != NULL)
 838                 l2_packet_deinit(drv->sock_xmit);
 839         os_free(drv);
 840 }
 841
 842 #else /* HOSTAPD */
 843
 844 static int
 845 get80211param(struct bsd_driver_data *drv, int op)
 846 {
 847         struct ieee80211req ireq;
 848
 849         if (bsd_get80211(drv, &ireq, op, NULL, 0) < 0)
 850                 return -1;
 851         return ireq.i_val;
 852 }
 853
 854 static int
 855 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
 856 {
 857         struct bsd_driver_data *drv = priv;
 858 #ifdef SIOCG80211BSSID
 859         struct ieee80211_bssid bs;
 860
 861         os_strlcpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
 862         if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
 863                 return -1;
 864         os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
 865         return 0;
 866 #else
 867         return get80211var(drv, IEEE80211_IOC_BSSID,
 868                 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
 869 #endif
 870 }
 871
 872 static int
 873 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
 874 {
 875         struct bsd_driver_data *drv = priv;
 876         return bsd_get_ssid(drv, ssid, 0);
 877 }
 878
 879 static int
 880 wpa_driver_bsd_set_wpa_ie(struct bsd_driver_data *drv, const u8 *wpa_ie,
 881                           size_t wpa_ie_len)
 882 {
 883 #ifdef IEEE80211_IOC_APPIE
 884         return bsd_set_opt_ie(drv, wpa_ie, wpa_ie_len);
 885 #else /* IEEE80211_IOC_APPIE */
 886         return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
 887 #endif /* IEEE80211_IOC_APPIE */
 888 }
 889
 890 static int
 891 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
 892 {
 893         int ret = 0;
 894
 895         wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
 896                 __FUNCTION__, wpa, privacy);
 897
 898         if (!wpa && wpa_driver_bsd_set_wpa_ie(priv, NULL, 0) < 0)
 899                 ret = -1;
 900         if (set80211param(priv, IEEE80211_IOC_PRIVACY, privacy) < 0)
 901                 ret = -1;
 902         if (set80211param(priv, IEEE80211_IOC_WPA, wpa) < 0)
 903                 ret = -1;
 904
 905         return ret;
 906 }
 907
 908 static int
 909 wpa_driver_bsd_set_wpa(void *priv, int enabled)
 910 {
 911         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
 912
 913         return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
 914 }
 915
 916 static int
 917 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
 918 {
 919         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 920         return set80211param(priv, IEEE80211_IOC_COUNTERMEASURES, enabled);
 921 }
 922
 923
 924 static int
 925 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
 926 {
 927         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 928         return set80211param(priv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
 929 }
 930
 931 static int
 932 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
 933 {
 934         return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
 935                                    addr);
 936 }
 937
 938 static int
 939 wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
 940 {
 941         return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code,
 942                                    addr);
 943 }
 944
 945 static int
 946 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
 947 {
 948         int authmode;
 949
 950         if ((auth_alg & WPA_AUTH_ALG_OPEN) &&
 951             (auth_alg & WPA_AUTH_ALG_SHARED))
 952                 authmode = IEEE80211_AUTH_AUTO;
 953         else if (auth_alg & WPA_AUTH_ALG_SHARED)
 954                 authmode = IEEE80211_AUTH_SHARED;
 955         else
 956                 authmode = IEEE80211_AUTH_OPEN;
 957
 958         return set80211param(priv, IEEE80211_IOC_AUTHMODE, authmode);
 959 }
 960
 961 static void
 962 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
 963 {
 964         struct bsd_driver_data *drv = ctx;
 965
 966         drv_event_eapol_rx(drv->ctx, src_addr, buf, len);
 967 }
 968
 969 static int
 970 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
 971 {
 972         struct bsd_driver_data *drv = priv;
 973         struct ieee80211req_mlme mlme;
 974         u32 mode;
 975         u16 channel;
 976         int privacy;
 977         int ret = 0;
 978
 979         wpa_printf(MSG_DEBUG,
 980                 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
 981                 , __func__
 982                    , (unsigned int) params->ssid_len, params->ssid
 983                 , (unsigned int) params->wpa_ie_len
 984                 , params->pairwise_suite
 985                 , params->group_suite
 986                 , params->key_mgmt_suite
 987         );
 988
 989         switch (params->mode) {
 990         case IEEE80211_MODE_INFRA:
 991                 mode = 0 /* STA */;
 992                 break;
 993         case IEEE80211_MODE_IBSS:
 994                 mode = IFM_IEEE80211_IBSS;
 995                 break;
 996         case IEEE80211_MODE_AP:
 997                 mode = IFM_IEEE80211_HOSTAP;
 998                 break;
 999         default:
1000                 wpa_printf(MSG_ERROR, "%s: unknown operation mode", __func__);
1001                 return -1;
1002         }
1003         if (bsd_set_mediaopt(drv, IFM_OMASK, mode) < 0) {
1004                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1005                            __func__);
1006                 return -1;
1007         }
1008
1009         if (params->mode == IEEE80211_MODE_AP) {
1010                 if (params->freq >= 2412 && params->freq <= 2472)
1011                         channel = (params->freq - 2407) / 5;
1012                 else if (params->freq == 2484)
1013                         channel = 14;
1014                 else if ((params->freq >= 5180 && params->freq <= 5240) ||
1015                          (params->freq >= 5745 && params->freq <= 5825))
1016                         channel = (params->freq - 5000) / 5;
1017                 else
1018                         channel = 0;
1019                 if (bsd_set_freq(drv, channel) < 0)
1020                         return -1;
1021
1022                 drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
1023                                                 handle_read, drv, 0);
1024                 if (drv->sock_xmit == NULL)
1025                         return -1;
1026                 drv->is_ap = 1;
1027                 return 0;
1028         }
1029
1030         if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1031             < 0)
1032                 ret = -1;
1033         if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1034                 ret = -1;
1035         /* XXX error handling is wrong but unclear what to do... */
1036         if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1037                 return -1;
1038
1039         privacy = !(params->pairwise_suite == CIPHER_NONE &&
1040             params->group_suite == CIPHER_NONE &&
1041             params->key_mgmt_suite == KEY_MGMT_NONE &&
1042             params->wpa_ie_len == 0);
1043         wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1044
1045         if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1046                 return -1;
1047
1048         if (params->wpa_ie_len &&
1049             set80211param(drv, IEEE80211_IOC_WPA,
1050                           params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1051                 return -1;
1052
1053         os_memset(&mlme, 0, sizeof(mlme));
1054         mlme.im_op = IEEE80211_MLME_ASSOC;
1055         if (params->ssid != NULL)
1056                 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1057         mlme.im_ssid_len = params->ssid_len;
1058         if (params->bssid != NULL)
1059                 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1060         if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1061                 return -1;
1062         return ret;
1063 }
1064
1065 static int
1066 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
1067 {
1068         struct bsd_driver_data *drv = priv;
1069 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1070         struct ieee80211_scan_req sr;
1071         int i;
1072 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1073
1074         if (bsd_set_mediaopt(drv, IFM_OMASK, 0 /* STA */) < 0) {
1075                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1076                            __func__);
1077                 return -1;
1078         }
1079
1080         if (set80211param(drv, IEEE80211_IOC_ROAMING,
1081                           IEEE80211_ROAMING_MANUAL) < 0) {
1082                 wpa_printf(MSG_ERROR, "%s: failed to set "
1083                            "wpa_supplicant-based roaming: %s", __func__,
1084                            strerror(errno));
1085                 return -1;
1086         }
1087
1088         if (wpa_driver_bsd_set_wpa(drv, 1) < 0) {
1089                 wpa_printf(MSG_ERROR, "%s: failed to set wpa: %s", __func__,
1090                            strerror(errno));
1091                 return -1;
1092         }
1093
1094         /* NB: interface must be marked UP to do a scan */
1095         if (bsd_ctrl_iface(drv, 1) < 0)
1096                 return -1;
1097
1098 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1099         os_memset(&sr, 0, sizeof(sr));
1100         sr.sr_flags = IEEE80211_IOC_SCAN_ACTIVE | IEEE80211_IOC_SCAN_ONCE |
1101                 IEEE80211_IOC_SCAN_NOJOIN;
1102         sr.sr_duration = IEEE80211_IOC_SCAN_FOREVER;
1103         if (params->num_ssids > 0) {
1104                 sr.sr_nssid = params->num_ssids;
1105 #if 0
1106                 /* Boundary check is done by upper layer */
1107                 if (sr.sr_nssid > IEEE80211_IOC_SCAN_MAX_SSID)
1108                         sr.sr_nssid = IEEE80211_IOC_SCAN_MAX_SSID;
1109 #endif
1110
1111                 /* NB: check scan cache first */
1112                 sr.sr_flags |= IEEE80211_IOC_SCAN_CHECK;
1113         }
1114         for (i = 0; i < sr.sr_nssid; i++) {
1115                 sr.sr_ssid[i].len = params->ssids[i].ssid_len;
1116                 os_memcpy(sr.sr_ssid[i].ssid, params->ssids[i].ssid,
1117                           sr.sr_ssid[i].len);
1118         }
1119
1120         /* NB: net80211 delivers a scan complete event so no need to poll */
1121         return set80211var(drv, IEEE80211_IOC_SCAN_REQ, &sr, sizeof(sr));
1122 #else /* IEEE80211_IOC_SCAN_MAX_SSID */
1123         /* set desired ssid before scan */
1124         if (bsd_set_ssid(drv, params->ssids[0].ssid,
1125                          params->ssids[0].ssid_len) < 0)
1126                 return -1;
1127
1128         /* NB: net80211 delivers a scan complete event so no need to poll */
1129         return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1130 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1131 }
1132
1133 static void
1134 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1135 {
1136         struct bsd_driver_data *drv = sock_ctx;
1137         char buf[2048];
1138         struct if_announcemsghdr *ifan;
1139         struct if_msghdr *ifm;
1140         struct rt_msghdr *rtm;
1141         union wpa_event_data event;
1142         struct ieee80211_michael_event *mic;
1143         struct ieee80211_leave_event *leave;
1144         struct ieee80211_join_event *join;
1145         int n;
1146
1147         n = read(sock, buf, sizeof(buf));
1148         if (n < 0) {
1149                 if (errno != EINTR && errno != EAGAIN)
1150                         perror("read(PF_ROUTE)");
1151                 return;
1152         }
1153
1154         rtm = (struct rt_msghdr *) buf;
1155         if (rtm->rtm_version != RTM_VERSION) {
1156                 wpa_printf(MSG_DEBUG, "Routing message version %d not "
1157                         "understood\n", rtm->rtm_version);
1158                 return;
1159         }
1160         os_memset(&event, 0, sizeof(event));
1161         switch (rtm->rtm_type) {
1162         case RTM_IFANNOUNCE:
1163                 ifan = (struct if_announcemsghdr *) rtm;
1164                 if (ifan->ifan_index != drv->ifindex)
1165                         break;
1166                 os_strlcpy(event.interface_status.ifname, drv->ifname,
1167                            sizeof(event.interface_status.ifname));
1168                 switch (ifan->ifan_what) {
1169                 case IFAN_DEPARTURE:
1170                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1171                 default:
1172                         return;
1173                 }
1174                 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1175                            event.interface_status.ifname,
1176                            ifan->ifan_what == IFAN_DEPARTURE ?
1177                                 "removed" : "added");
1178                 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1179                 break;
1180         case RTM_IEEE80211:
1181                 ifan = (struct if_announcemsghdr *) rtm;
1182                 if (ifan->ifan_index != drv->ifindex)
1183                         break;
1184                 switch (ifan->ifan_what) {
1185                 case RTM_IEEE80211_ASSOC:
1186                 case RTM_IEEE80211_REASSOC:
1187                         if (drv->is_ap)
1188                                 break;
1189                         wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1190                         break;
1191                 case RTM_IEEE80211_DISASSOC:
1192                         if (drv->is_ap)
1193                                 break;
1194                         wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1195                         break;
1196                 case RTM_IEEE80211_SCAN:
1197                         if (drv->is_ap)
1198                                 break;
1199                         wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1200                         break;
1201                 case RTM_IEEE80211_LEAVE:
1202                         leave = (struct ieee80211_leave_event *) &ifan[1];
1203                         drv_event_disassoc(ctx, leave->iev_addr);
1204                         break;
1205                 case RTM_IEEE80211_JOIN:
1206 #ifdef RTM_IEEE80211_REJOIN
1207                 case RTM_IEEE80211_REJOIN:
1208 #endif
1209                         join = (struct ieee80211_join_event *) &ifan[1];
1210                         bsd_new_sta(drv, ctx, join->iev_addr);
1211                         break;
1212                 case RTM_IEEE80211_REPLAY:
1213                         /* ignore */
1214                         break;
1215                 case RTM_IEEE80211_MICHAEL:
1216                         mic = (struct ieee80211_michael_event *) &ifan[1];
1217                         wpa_printf(MSG_DEBUG,
1218                                 "Michael MIC failure wireless event: "
1219                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1220                                 MAC2STR(mic->iev_src));
1221
1222                         os_memset(&event, 0, sizeof(event));
1223                         event.michael_mic_failure.unicast =
1224                                 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1225                         wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1226                                 &event);
1227                         break;
1228                 }
1229                 break;
1230         case RTM_IFINFO:
1231                 ifm = (struct if_msghdr *) rtm;
1232                 if (ifm->ifm_index != drv->ifindex)
1233                         break;
1234                 if ((rtm->rtm_flags & RTF_UP) == 0) {
1235                         os_strlcpy(event.interface_status.ifname, drv->ifname,
1236                                    sizeof(event.interface_status.ifname));
1237                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1238                         wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1239                                    event.interface_status.ifname);
1240                         wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1241                 }
1242                 break;
1243         }
1244 }
1245
1246 static void
1247 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1248                               struct ieee80211req_scan_result *sr)
1249 {
1250         struct wpa_scan_res *result, **tmp;
1251         size_t extra_len;
1252         u8 *pos;
1253
1254         extra_len = 2 + sr->isr_ssid_len;
1255         extra_len += 2 + sr->isr_nrates;
1256         extra_len += 3; /* ERP IE */
1257         extra_len += sr->isr_ie_len;
1258
1259         result = os_zalloc(sizeof(*result) + extra_len);
1260         if (result == NULL)
1261                 return;
1262         os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1263         result->freq = sr->isr_freq;
1264         result->beacon_int = sr->isr_intval;
1265         result->caps = sr->isr_capinfo;
1266         result->qual = sr->isr_rssi;
1267         result->noise = sr->isr_noise;
1268
1269         pos = (u8 *)(result + 1);
1270
1271         *pos++ = WLAN_EID_SSID;
1272         *pos++ = sr->isr_ssid_len;
1273         os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1274         pos += sr->isr_ssid_len;
1275
1276         /*
1277          * Deal all rates as supported rate.
1278          * Because net80211 doesn't report extended supported rate or not.
1279          */
1280         *pos++ = WLAN_EID_SUPP_RATES;
1281         *pos++ = sr->isr_nrates;
1282         os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1283         pos += sr->isr_nrates;
1284
1285         *pos++ = WLAN_EID_ERP_INFO;
1286         *pos++ = 1;
1287         *pos++ = sr->isr_erp;
1288
1289         os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1290         pos += sr->isr_ie_len;
1291
1292         result->ie_len = pos - (u8 *)(result + 1);
1293
1294         tmp = os_realloc(res->res,
1295                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1296         if (tmp == NULL) {
1297                 os_free(result);
1298                 return;
1299         }
1300         tmp[res->num++] = result;
1301         res->res = tmp;
1302 }
1303
1304 struct wpa_scan_results *
1305 wpa_driver_bsd_get_scan_results2(void *priv)
1306 {
1307         struct ieee80211req_scan_result *sr;
1308         struct wpa_scan_results *res;
1309         int len, rest;
1310         uint8_t buf[24*1024], *pos;
1311
1312         len = get80211var(priv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1313         if (len < 0)
1314                 return NULL;
1315
1316         res = os_zalloc(sizeof(*res));
1317         if (res == NULL)
1318                 return NULL;
1319
1320         pos = buf;
1321         rest = len;
1322         while (rest >= sizeof(struct ieee80211req_scan_result)) {
1323                 sr = (struct ieee80211req_scan_result *)pos;
1324                 wpa_driver_bsd_add_scan_entry(res, sr);
1325                 pos += sr->isr_len;
1326                 rest -= sr->isr_len;
1327         }
1328
1329         wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1330                    len, (unsigned long)res->num);
1331
1332         return res;
1333 }
1334
1335 static int wpa_driver_bsd_capa(struct bsd_driver_data *drv)
1336 {
1337 #ifdef IEEE80211_IOC_DEVCAPS
1338 /* kernel definitions copied from net80211/ieee80211_var.h */
1339 #define IEEE80211_CIPHER_WEP            0
1340 #define IEEE80211_CIPHER_TKIP           1
1341 #define IEEE80211_CIPHER_AES_CCM        3
1342 #define IEEE80211_CRYPTO_WEP            (1<<IEEE80211_CIPHER_WEP)
1343 #define IEEE80211_CRYPTO_TKIP           (1<<IEEE80211_CIPHER_TKIP)
1344 #define IEEE80211_CRYPTO_AES_CCM        (1<<IEEE80211_CIPHER_AES_CCM)
1345 #define IEEE80211_C_HOSTAP      0x00000400      /* CAPABILITY: HOSTAP avail */
1346 #define IEEE80211_C_WPA1        0x00800000      /* CAPABILITY: WPA1 avail */
1347 #define IEEE80211_C_WPA2        0x01000000      /* CAPABILITY: WPA2 avail */
1348         struct ieee80211_devcaps_req devcaps;
1349
1350         if (get80211var(drv, IEEE80211_IOC_DEVCAPS, &devcaps,
1351                         sizeof(devcaps)) < 0) {
1352                 wpa_printf(MSG_ERROR, "failed to IEEE80211_IOC_DEVCAPS: %s",
1353                            strerror(errno));
1354                 return -1;
1355         }
1356
1357         wpa_printf(MSG_DEBUG, "%s: drivercaps=0x%08x,cryptocaps=0x%08x",
1358                    __func__, devcaps.dc_drivercaps, devcaps.dc_cryptocaps);
1359
1360         if (devcaps.dc_drivercaps & IEEE80211_C_WPA1)
1361                 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1362                         WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1363         if (devcaps.dc_drivercaps & IEEE80211_C_WPA2)
1364                 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1365                         WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1366
1367         if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_WEP)
1368                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1369                         WPA_DRIVER_CAPA_ENC_WEP104;
1370         if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_TKIP)
1371                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1372         if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_AES_CCM)
1373                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1374
1375         if (devcaps.dc_drivercaps & IEEE80211_C_HOSTAP)
1376                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1377 #undef IEEE80211_CIPHER_WEP
1378 #undef IEEE80211_CIPHER_TKIP
1379 #undef IEEE80211_CIPHER_AES_CCM
1380 #undef IEEE80211_CRYPTO_WEP
1381 #undef IEEE80211_CRYPTO_TKIP
1382 #undef IEEE80211_CRYPTO_AES_CCM
1383 #undef IEEE80211_C_HOSTAP
1384 #undef IEEE80211_C_WPA1
1385 #undef IEEE80211_C_WPA2
1386 #else /* IEEE80211_IOC_DEVCAPS */
1387         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1388         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1389                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1390                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1391                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1392         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1393                 WPA_DRIVER_CAPA_ENC_WEP104 |
1394                 WPA_DRIVER_CAPA_ENC_TKIP |
1395                 WPA_DRIVER_CAPA_ENC_CCMP;
1396         drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1397 #endif /* IEEE80211_IOC_DEVCAPS */
1398 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1399         drv->capa.max_scan_ssids = IEEE80211_IOC_SCAN_MAX_SSID;
1400 #else /* IEEE80211_IOC_SCAN_MAX_SSID */
1401         drv->capa.max_scan_ssids = 1;
1402 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1403         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1404                 WPA_DRIVER_AUTH_SHARED |
1405                 WPA_DRIVER_AUTH_LEAP;
1406         return 0;
1407 }
1408
1409 static void *
1410 wpa_driver_bsd_init(void *ctx, const char *ifname)
1411 {
1412 #define GETPARAM(drv, param, v) \
1413         (((v) = get80211param(drv, param)) != -1)
1414         struct bsd_driver_data *drv;
1415
1416         drv = os_zalloc(sizeof(*drv));
1417         if (drv == NULL)
1418                 return NULL;
1419         /*
1420          * NB: We require the interface name be mappable to an index.
1421          *     This implies we do not support having wpa_supplicant
1422          *     wait for an interface to appear.  This seems ok; that
1423          *     doesn't belong here; it's really the job of devd.
1424          */
1425         drv->ifindex = if_nametoindex(ifname);
1426         if (drv->ifindex == 0) {
1427                 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1428                            __func__, ifname);
1429                 goto fail1;
1430         }
1431         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1432         if (drv->sock < 0)
1433                 goto fail1;
1434         drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1435         if (drv->route < 0)
1436                 goto fail;
1437         eloop_register_read_sock(drv->route,
1438                 wpa_driver_bsd_event_receive, ctx, drv);
1439
1440         drv->ctx = ctx;
1441         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1442
1443         /* Down interface during setup. */
1444         if (bsd_ctrl_iface(drv, 0) < 0)
1445                 goto fail;
1446
1447         if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1448                 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1449                         __func__, strerror(errno));
1450                 goto fail;
1451         }
1452         if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1453                 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1454                         __func__, strerror(errno));
1455                 goto fail;
1456         }
1457         if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1458                 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1459                         __func__, strerror(errno));
1460                 goto fail;
1461         }
1462
1463         if (wpa_driver_bsd_capa(drv))
1464                 goto fail;
1465
1466         return drv;
1467 fail:
1468         close(drv->sock);
1469 fail1:
1470         os_free(drv);
1471         return NULL;
1472 #undef GETPARAM
1473 }
1474
1475 static void
1476 wpa_driver_bsd_deinit(void *priv)
1477 {
1478         struct bsd_driver_data *drv = priv;
1479
1480         wpa_driver_bsd_set_wpa(drv, 0);
1481         eloop_unregister_read_sock(drv->route);
1482
1483         /* NB: mark interface down */
1484         bsd_ctrl_iface(drv, 0);
1485
1486         wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1487         if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1488                 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1489                         __func__);
1490
1491         if (drv->sock_xmit != NULL)
1492                 l2_packet_deinit(drv->sock_xmit);
1493         (void) close(drv->route);               /* ioctl socket */
1494         (void) close(drv->sock);                /* event socket */
1495         os_free(drv);
1496 }
1497
1498 static int
1499 wpa_driver_bsd_get_capa(void *priv, struct wpa_driver_capa *capa)
1500 {
1501         struct bsd_driver_data *drv = priv;
1502
1503         os_memcpy(capa, &drv->capa, sizeof(*capa));
1504         return 0;
1505 }
1506 #endif /* HOSTAPD */
1507
1508
1509 const struct wpa_driver_ops wpa_driver_bsd_ops = {
1510         .name                   = "bsd",
1511         .desc                   = "BSD 802.11 support",
1512 #ifdef HOSTAPD
1513         .hapd_init              = bsd_init,
1514         .hapd_deinit            = bsd_deinit,
1515         .set_privacy            = bsd_set_privacy,
1516         .get_seqnum             = bsd_get_seqnum,
1517         .flush                  = bsd_flush,
1518         .read_sta_data          = bsd_read_sta_driver_data,
1519         .sta_disassoc           = bsd_sta_disassoc,
1520         .sta_deauth             = bsd_sta_deauth,
1521         .set_freq               = hostapd_bsd_set_freq,
1522 #else /* HOSTAPD */
1523         .init                   = wpa_driver_bsd_init,
1524         .deinit                 = wpa_driver_bsd_deinit,
1525         .get_bssid              = wpa_driver_bsd_get_bssid,
1526         .get_ssid               = wpa_driver_bsd_get_ssid,
1527         .set_countermeasures    = wpa_driver_bsd_set_countermeasures,
1528         .scan2                  = wpa_driver_bsd_scan,
1529         .get_scan_results2      = wpa_driver_bsd_get_scan_results2,
1530         .deauthenticate         = wpa_driver_bsd_deauthenticate,
1531         .disassociate           = wpa_driver_bsd_disassociate,
1532         .associate              = wpa_driver_bsd_associate,
1533         .get_capa               = wpa_driver_bsd_get_capa,
1534 #endif /* HOSTAPD */
1535         .set_key                = bsd_set_key,
1536         .set_ieee8021x          = bsd_set_ieee8021x,
1537         .hapd_set_ssid          = bsd_set_ssid,
1538         .hapd_get_ssid          = bsd_get_ssid,
1539         .hapd_send_eapol        = bsd_send_eapol,
1540         .sta_set_flags          = bsd_set_sta_authorized,
1541         .set_generic_elem       = bsd_set_opt_ie,
1542 };