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