contrib/wpa/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_commit(void *priv)
 315 {
 316         return bsd_ctrl_iface(priv, 1);
 317 }
 318
 319 static int
 320 bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
 321             const unsigned char *addr, int key_idx, int set_tx, const u8 *seq,
 322             size_t seq_len, const u8 *key, size_t key_len)
 323 {
 324         struct ieee80211req_key wk;
 325         struct bsd_driver_data *drv = priv;
 326
 327         wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d "
 328                    "seq_len=%zu key_len=%zu", __func__, alg, addr, key_idx,
 329                    set_tx, seq_len, key_len);
 330
 331         if (alg == WPA_ALG_NONE) {
 332 #ifndef HOSTAPD
 333                 if (addr == NULL || is_broadcast_ether_addr(addr))
 334                         return bsd_del_key(priv, NULL, key_idx);
 335                 else
 336 #endif /* HOSTAPD */
 337                         return bsd_del_key(priv, addr, key_idx);
 338         }
 339
 340         os_memset(&wk, 0, sizeof(wk));
 341         switch (alg) {
 342         case WPA_ALG_WEP:
 343                 wk.ik_type = IEEE80211_CIPHER_WEP;
 344                 break;
 345         case WPA_ALG_TKIP:
 346                 wk.ik_type = IEEE80211_CIPHER_TKIP;
 347                 break;
 348         case WPA_ALG_CCMP:
 349                 wk.ik_type = IEEE80211_CIPHER_AES_CCM;
 350                 break;
 351         default:
 352                 wpa_printf(MSG_ERROR, "%s: unknown alg=%d", __func__, alg);
 353                 return -1;
 354         }
 355
 356         wk.ik_flags = IEEE80211_KEY_RECV;
 357         if (set_tx)
 358                 wk.ik_flags |= IEEE80211_KEY_XMIT;
 359
 360         if (addr == NULL) {
 361                 os_memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 362                 wk.ik_keyix = key_idx;
 363         } else {
 364                 os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 365                 /*
 366                  * Deduce whether group/global or unicast key by checking
 367                  * the address (yech).  Note also that we can only mark global
 368                  * keys default; doing this for a unicast key is an error.
 369                  */
 370                 if (is_broadcast_ether_addr(addr)) {
 371                         wk.ik_flags |= IEEE80211_KEY_GROUP;
 372                         wk.ik_keyix = key_idx;
 373                 } else {
 374                         wk.ik_keyix = key_idx == 0 ? IEEE80211_KEYIX_NONE :
 375                                 key_idx;
 376                 }
 377         }
 378         if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
 379                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 380 #ifndef HOSTAPD
 381         /*
 382          * Ignore replay failures in IBSS and AHDEMO mode.
 383          */
 384         if (drv->opmode == IEEE80211_M_IBSS ||
 385             drv->opmode == IEEE80211_M_AHDEMO)
 386                 wk.ik_flags |= IEEE80211_KEY_NOREPLAY;
 387 #endif
 388         wk.ik_keylen = key_len;
 389         if (seq) {
 390 #ifdef WORDS_BIGENDIAN
 391                 /*
 392                  * wk.ik_keyrsc is in host byte order (big endian), need to
 393                  * swap it to match with the byte order used in WPA.
 394                  */
 395                 int i;
 396                 u8 *keyrsc = (u8 *) &wk.ik_keyrsc;
 397                 for (i = 0; i < seq_len; i++)
 398                         keyrsc[WPA_KEY_RSC_LEN - i - 1] = seq[i];
 399 #else /* WORDS_BIGENDIAN */
 400                 os_memcpy(&wk.ik_keyrsc, seq, seq_len);
 401 #endif /* WORDS_BIGENDIAN */
 402         }
 403         os_memcpy(wk.ik_keydata, key, key_len);
 404
 405         return set80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
 406 }
 407
 408 static int
 409 bsd_configure_wpa(void *priv, struct wpa_bss_params *params)
 410 {
 411 #ifndef IEEE80211_IOC_APPIE
 412         static const char *ciphernames[] =
 413                 { "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
 414         int v;
 415
 416         switch (params->wpa_group) {
 417         case WPA_CIPHER_CCMP:
 418                 v = IEEE80211_CIPHER_AES_CCM;
 419                 break;
 420         case WPA_CIPHER_TKIP:
 421                 v = IEEE80211_CIPHER_TKIP;
 422                 break;
 423         case WPA_CIPHER_WEP104:
 424                 v = IEEE80211_CIPHER_WEP;
 425                 break;
 426         case WPA_CIPHER_WEP40:
 427                 v = IEEE80211_CIPHER_WEP;
 428                 break;
 429         case WPA_CIPHER_NONE:
 430                 v = IEEE80211_CIPHER_NONE;
 431                 break;
 432         default:
 433                 printf("Unknown group key cipher %u\n",
 434                         params->wpa_group);
 435                 return -1;
 436         }
 437         wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
 438                    __func__, ciphernames[v], v);
 439         if (set80211param(priv, IEEE80211_IOC_MCASTCIPHER, v)) {
 440                 printf("Unable to set group key cipher to %u (%s)\n",
 441                         v, ciphernames[v]);
 442                 return -1;
 443         }
 444         if (v == IEEE80211_CIPHER_WEP) {
 445                 /* key length is done only for specific ciphers */
 446                 v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 447                 if (set80211param(priv, IEEE80211_IOC_MCASTKEYLEN, v)) {
 448                         printf("Unable to set group key length to %u\n", v);
 449                         return -1;
 450                 }
 451         }
 452
 453         v = 0;
 454         if (params->wpa_pairwise & WPA_CIPHER_CCMP)
 455                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 456         if (params->wpa_pairwise & WPA_CIPHER_TKIP)
 457                 v |= 1<<IEEE80211_CIPHER_TKIP;
 458         if (params->wpa_pairwise & WPA_CIPHER_NONE)
 459                 v |= 1<<IEEE80211_CIPHER_NONE;
 460         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 461         if (set80211param(priv, IEEE80211_IOC_UCASTCIPHERS, v)) {
 462                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 463                 return -1;
 464         }
 465
 466         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 467                    __func__, params->wpa_key_mgmt);
 468         if (set80211param(priv, IEEE80211_IOC_KEYMGTALGS,
 469                           params->wpa_key_mgmt)) {
 470                 printf("Unable to set key management algorithms to 0x%x\n",
 471                         params->wpa_key_mgmt);
 472                 return -1;
 473         }
 474
 475         v = 0;
 476         if (params->rsn_preauth)
 477                 v |= BIT(0);
 478         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 479                    __func__, params->rsn_preauth);
 480         if (set80211param(priv, IEEE80211_IOC_RSNCAPS, v)) {
 481                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 482                 return -1;
 483         }
 484 #endif /* IEEE80211_IOC_APPIE */
 485
 486         wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, params->wpa);
 487         if (set80211param(priv, IEEE80211_IOC_WPA, params->wpa)) {
 488                 printf("Unable to set WPA to %u\n", params->wpa);
 489                 return -1;
 490         }
 491         return 0;
 492 }
 493
 494 static int
 495 bsd_set_ieee8021x(void *priv, struct wpa_bss_params *params)
 496 {
 497         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);
 498
 499         if (!params->enabled) {
 500                 /* XXX restore state */
 501                 return set80211param(priv, IEEE80211_IOC_AUTHMODE,
 502                                      IEEE80211_AUTH_AUTO);
 503         }
 504         if (!params->wpa && !params->ieee802_1x) {
 505                 wpa_printf(MSG_ERROR, "%s: No 802.1X or WPA enabled",
 506                            __func__);
 507                 return -1;
 508         }
 509         if (params->wpa && bsd_configure_wpa(priv, params) != 0) {
 510                 wpa_printf(MSG_ERROR, "%s: Failed to configure WPA state",
 511                            __func__);
 512                 return -1;
 513         }
 514         if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
 515                 (params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 516                 wpa_printf(MSG_ERROR, "%s: Failed to enable WPA/802.1X",
 517                            __func__);
 518                 return -1;
 519         }
 520         return bsd_ctrl_iface(priv, 1);
 521 }
 522
 523 static int
 524 bsd_set_sta_authorized(void *priv, const u8 *addr,
 525                        int total_flags, int flags_or, int flags_and)
 526 {
 527         int authorized = -1;
 528
 529         /* For now, only support setting Authorized flag */
 530         if (flags_or & WPA_STA_AUTHORIZED)
 531                 authorized = 1;
 532         if (!(flags_and & WPA_STA_AUTHORIZED))
 533                 authorized = 0;
 534
 535         if (authorized < 0)
 536                 return 0;
 537
 538         return bsd_send_mlme_param(priv, authorized ?
 539                                    IEEE80211_MLME_AUTHORIZE :
 540                                    IEEE80211_MLME_UNAUTHORIZE, 0, addr);
 541 }
 542
 543 static void
 544 bsd_new_sta(void *priv, void *ctx, u8 addr[IEEE80211_ADDR_LEN])
 545 {
 546         struct ieee80211req_wpaie ie;
 547         int ielen = 0;
 548         u8 *iebuf = NULL;
 549
 550         /*
 551          * Fetch and validate any negotiated WPA/RSN parameters.
 552          */
 553         memset(&ie, 0, sizeof(ie));
 554         memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
 555         if (get80211var(priv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
 556                 printf("Failed to get WPA/RSN information element.\n");
 557                 goto no_ie;
 558         }
 559         iebuf = ie.wpa_ie;
 560         ielen = ie.wpa_ie[1];
 561         if (ielen == 0)
 562                 iebuf = NULL;
 563         else
 564                 ielen += 2;
 565
 566 no_ie:
 567         drv_event_assoc(ctx, addr, iebuf, ielen, 0);
 568 }
 569
 570 static int
 571 bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
 572                int encrypt, const u8 *own_addr, u32 flags)
 573 {
 574         struct bsd_driver_data *drv = priv;
 575
 576         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", data, data_len);
 577
 578         return l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, data,
 579                               data_len);
 580 }
 581
 582 static int
 583 bsd_set_freq(void *priv, struct hostapd_freq_params *freq)
 584 {
 585         struct bsd_driver_data *drv = priv;
 586 #ifdef SIOCS80211CHANNEL
 587         struct ieee80211chanreq creq;
 588 #endif /* SIOCS80211CHANNEL */
 589         u32 mode;
 590         int channel = freq->channel;
 591
 592         if (channel < 14) {
 593                 mode =
 594 #ifdef CONFIG_IEEE80211N
 595                         freq->ht_enabled ? IFM_IEEE80211_11NG :
 596 #endif /* CONFIG_IEEE80211N */
 597                         IFM_IEEE80211_11G;
 598         } else if (channel == 14) {
 599                 mode = IFM_IEEE80211_11B;
 600         } else {
 601                 mode =
 602 #ifdef CONFIG_IEEE80211N
 603                         freq->ht_enabled ? IFM_IEEE80211_11NA :
 604 #endif /* CONFIG_IEEE80211N */
 605                         IFM_IEEE80211_11A;
 606         }
 607         if (bsd_set_mediaopt(drv, IFM_MMASK, mode) < 0) {
 608                 wpa_printf(MSG_ERROR, "%s: failed to set modulation mode",
 609                            __func__);
 610                 return -1;
 611         }
 612
 613 #ifdef SIOCS80211CHANNEL
 614         os_memset(&creq, 0, sizeof(creq));
 615         os_strlcpy(creq.i_name, drv->ifname, sizeof(creq.i_name));
 616         creq.i_channel = (u_int16_t)channel;
 617         return ioctl(drv->sock, SIOCS80211CHANNEL, &creq);
 618 #else /* SIOCS80211CHANNEL */
 619         return set80211param(priv, IEEE80211_IOC_CHANNEL, channel);
 620 #endif /* SIOCS80211CHANNEL */
 621 }
 622
 623 static int
 624 bsd_set_opt_ie(void *priv, const u8 *ie, size_t ie_len)
 625 {
 626 #ifdef IEEE80211_IOC_APPIE
 627         wpa_printf(MSG_DEBUG, "%s: set WPA+RSN ie (len %lu)", __func__,
 628                    (unsigned long)ie_len);
 629         return bsd_set80211(priv, IEEE80211_IOC_APPIE, IEEE80211_APPIE_WPA,
 630                             ie, ie_len);
 631 #endif /* IEEE80211_IOC_APPIE */
 632         return 0;
 633 }
 634
 635 static int
 636 rtbuf_len(void)
 637 {
 638         size_t len;
 639
 640         int mib[6] = {CTL_NET, AF_ROUTE, 0, AF_INET, NET_RT_DUMP, 0};
 641
 642         if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
 643                 wpa_printf(MSG_WARNING, "%s failed: %s\n", __func__,
 644                            strerror(errno));
 645                 len = 2048;
 646         }
 647
 648         return len;
 649 }
 650
 651 #ifdef HOSTAPD
 652
 653 /*
 654  * Avoid conflicts with hostapd definitions by undefining couple of defines
 655  * from net80211 header files.
 656  */
 657 #undef RSN_VERSION
 658 #undef WPA_VERSION
 659 #undef WPA_OUI_TYPE
 660
 661 static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
 662                           int reason_code);
 663
 664 static const char *
 665 ether_sprintf(const u8 *addr)
 666 {
 667         static char buf[sizeof(MACSTR)];
 668
 669         if (addr != NULL)
 670                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 671         else
 672                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 673         return buf;
 674 }
 675
 676 static int
 677 bsd_set_privacy(void *priv, int enabled)
 678 {
 679         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 680
 681         return set80211param(priv, IEEE80211_IOC_PRIVACY, enabled);
 682 }
 683
 684 static int
 685 bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 686                u8 *seq)
 687 {
 688         struct ieee80211req_key wk;
 689
 690         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 691                    __func__, ether_sprintf(addr), idx);
 692
 693         memset(&wk, 0, sizeof(wk));
 694         if (addr == NULL)
 695                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 696         else
 697                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 698         wk.ik_keyix = idx;
 699
 700         if (get80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
 701                 printf("Failed to get encryption.\n");
 702                 return -1;
 703         }
 704
 705 #ifdef WORDS_BIGENDIAN
 706         {
 707                 /*
 708                  * wk.ik_keytsc is in host byte order (big endian), need to
 709                  * swap it to match with the byte order used in WPA.
 710                  */
 711                 int i;
 712                 u8 tmp[WPA_KEY_RSC_LEN];
 713                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 714                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 715                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 716                 }
 717         }
 718 #else /* WORDS_BIGENDIAN */
 719         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 720 #endif /* WORDS_BIGENDIAN */
 721         return 0;
 722 }
 723
 724
 725 static int
 726 bsd_flush(void *priv)
 727 {
 728         u8 allsta[IEEE80211_ADDR_LEN];
 729
 730         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 731         return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
 732 }
 733
 734
 735 static int
 736 bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 737                          const u8 *addr)
 738 {
 739         struct ieee80211req_sta_stats stats;
 740
 741         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 742         if (get80211var(priv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats))
 743             > 0) {
 744                 /* XXX? do packets counts include non-data frames? */
 745                 data->rx_packets = stats.is_stats.ns_rx_data;
 746                 data->rx_bytes = stats.is_stats.ns_rx_bytes;
 747                 data->tx_packets = stats.is_stats.ns_tx_data;
 748                 data->tx_bytes = stats.is_stats.ns_tx_bytes;
 749         }
 750         return 0;
 751 }
 752
 753 static int
 754 bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
 755 {
 756         return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
 757                                    addr);
 758 }
 759
 760 static int
 761 bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
 762                  int reason_code)
 763 {
 764         return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code,
 765                                    addr);
 766 }
 767
 768 static void
 769 bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
 770 {
 771         struct bsd_driver_data *drv = ctx;
 772         char *buf;
 773         struct if_announcemsghdr *ifan;
 774         struct rt_msghdr *rtm;
 775         struct ieee80211_michael_event *mic;
 776         struct ieee80211_join_event *join;
 777         struct ieee80211_leave_event *leave;
 778         int n, len;
 779         union wpa_event_data data;
 780
 781         len = rtbuf_len();
 782
 783         buf = os_malloc(len);
 784         if (buf == NULL) {
 785                 wpa_printf(MSG_ERROR, "%s os_malloc() failed\n", __func__);
 786                 return;
 787         }
 788
 789         n = read(sock, buf, len);
 790         if (n < 0) {
 791                 if (errno != EINTR && errno != EAGAIN)
 792                         wpa_printf(MSG_ERROR, "%s read() failed: %s\n",
 793                                    __func__, strerror(errno));
 794                 os_free(buf);
 795                 return;
 796         }
 797
 798         rtm = (struct rt_msghdr *) buf;
 799         if (rtm->rtm_version != RTM_VERSION) {
 800                 wpa_printf(MSG_DEBUG, "Invalid routing message version=%d",
 801                            rtm->rtm_version);
 802                 os_free(buf);
 803                 return;
 804         }
 805         ifan = (struct if_announcemsghdr *) rtm;
 806         switch (rtm->rtm_type) {
 807         case RTM_IEEE80211:
 808                 switch (ifan->ifan_what) {
 809                 case RTM_IEEE80211_ASSOC:
 810                 case RTM_IEEE80211_REASSOC:
 811                 case RTM_IEEE80211_DISASSOC:
 812                 case RTM_IEEE80211_SCAN:
 813                         break;
 814                 case RTM_IEEE80211_LEAVE:
 815                         leave = (struct ieee80211_leave_event *) &ifan[1];
 816                         drv_event_disassoc(drv->hapd, leave->iev_addr);
 817                         break;
 818                 case RTM_IEEE80211_JOIN:
 819 #ifdef RTM_IEEE80211_REJOIN
 820                 case RTM_IEEE80211_REJOIN:
 821 #endif
 822                         join = (struct ieee80211_join_event *) &ifan[1];
 823                         bsd_new_sta(drv, drv->hapd, join->iev_addr);
 824                         break;
 825                 case RTM_IEEE80211_REPLAY:
 826                         /* ignore */
 827                         break;
 828                 case RTM_IEEE80211_MICHAEL:
 829                         mic = (struct ieee80211_michael_event *) &ifan[1];
 830                         wpa_printf(MSG_DEBUG,
 831                                 "Michael MIC failure wireless event: "
 832                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
 833                                 MAC2STR(mic->iev_src));
 834                         os_memset(&data, 0, sizeof(data));
 835                         data.michael_mic_failure.unicast = 1;
 836                         data.michael_mic_failure.src = mic->iev_src;
 837                         wpa_supplicant_event(drv->hapd,
 838                                              EVENT_MICHAEL_MIC_FAILURE, &data);
 839                         break;
 840                 }
 841                 break;
 842         }
 843         os_free(buf);
 844 }
 845
 846 static void
 847 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
 848 {
 849         struct bsd_driver_data *drv = ctx;
 850         drv_event_eapol_rx(drv->hapd, src_addr, buf, len);
 851 }
 852
 853 static void *
 854 bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
 855 {
 856         struct bsd_driver_data *drv;
 857
 858         drv = os_zalloc(sizeof(struct bsd_driver_data));
 859         if (drv == NULL) {
 860                 printf("Could not allocate memory for bsd driver data\n");
 861                 goto bad;
 862         }
 863
 864         drv->hapd = hapd;
 865         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
 866         if (drv->sock < 0) {
 867                 perror("socket[PF_INET,SOCK_DGRAM]");
 868                 goto bad;
 869         }
 870         os_strlcpy(drv->ifname, params->ifname, sizeof(drv->ifname));
 871
 872         drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
 873                                         handle_read, drv, 0);
 874         if (drv->sock_xmit == NULL)
 875                 goto bad;
 876         if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
 877                 goto bad;
 878
 879         /* mark down during setup */
 880         if (bsd_ctrl_iface(drv, 0) < 0)
 881                 goto bad;
 882
 883         drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
 884         if (drv->route < 0) {
 885                 perror("socket(PF_ROUTE,SOCK_RAW)");
 886                 goto bad;
 887         }
 888         eloop_register_read_sock(drv->route, bsd_wireless_event_receive, drv,
 889                                  NULL);
 890
 891         if (bsd_set_mediaopt(drv, IFM_OMASK, IFM_IEEE80211_HOSTAP) < 0) {
 892                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
 893                            __func__);
 894                 goto bad;
 895         }
 896
 897         return drv;
 898 bad:
 899         if (drv->sock_xmit != NULL)
 900                 l2_packet_deinit(drv->sock_xmit);
 901         if (drv->sock >= 0)
 902                 close(drv->sock);
 903         if (drv != NULL)
 904                 os_free(drv);
 905         return NULL;
 906 }
 907
 908
 909 static void
 910 bsd_deinit(void *priv)
 911 {
 912         struct bsd_driver_data *drv = priv;
 913
 914         if (drv->route >= 0) {
 915                 eloop_unregister_read_sock(drv->route);
 916                 close(drv->route);
 917         }
 918         bsd_ctrl_iface(drv, 0);
 919         if (drv->sock >= 0)
 920                 close(drv->sock);
 921         if (drv->sock_xmit != NULL)
 922                 l2_packet_deinit(drv->sock_xmit);
 923         os_free(drv);
 924 }
 925
 926 #else /* HOSTAPD */
 927
 928 static int
 929 get80211param(struct bsd_driver_data *drv, int op)
 930 {
 931         struct ieee80211req ireq;
 932
 933         if (bsd_get80211(drv, &ireq, op, NULL, 0) < 0)
 934                 return -1;
 935         return ireq.i_val;
 936 }
 937
 938 static int
 939 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
 940 {
 941         struct bsd_driver_data *drv = priv;
 942 #ifdef SIOCG80211BSSID
 943         struct ieee80211_bssid bs;
 944
 945         os_strlcpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
 946         if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
 947                 return -1;
 948         os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
 949         return 0;
 950 #else
 951         return get80211var(drv, IEEE80211_IOC_BSSID,
 952                 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
 953 #endif
 954 }
 955
 956 static int
 957 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
 958 {
 959         struct bsd_driver_data *drv = priv;
 960         return bsd_get_ssid(drv, ssid, 0);
 961 }
 962
 963 static int
 964 wpa_driver_bsd_set_wpa_ie(struct bsd_driver_data *drv, const u8 *wpa_ie,
 965                           size_t wpa_ie_len)
 966 {
 967 #ifdef IEEE80211_IOC_APPIE
 968         return bsd_set_opt_ie(drv, wpa_ie, wpa_ie_len);
 969 #else /* IEEE80211_IOC_APPIE */
 970         return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
 971 #endif /* IEEE80211_IOC_APPIE */
 972 }
 973
 974 static int
 975 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
 976 {
 977         int ret = 0;
 978
 979         wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
 980                 __FUNCTION__, wpa, privacy);
 981
 982         if (!wpa && wpa_driver_bsd_set_wpa_ie(priv, NULL, 0) < 0)
 983                 ret = -1;
 984         if (set80211param(priv, IEEE80211_IOC_PRIVACY, privacy) < 0)
 985                 ret = -1;
 986         if (set80211param(priv, IEEE80211_IOC_WPA, wpa) < 0)
 987                 ret = -1;
 988
 989         return ret;
 990 }
 991
 992 static int
 993 wpa_driver_bsd_set_wpa(void *priv, int enabled)
 994 {
 995         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
 996
 997         return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
 998 }
 999
1000 static int
1001 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
1002 {
1003         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1004         return set80211param(priv, IEEE80211_IOC_COUNTERMEASURES, enabled);
1005 }
1006
1007
1008 static int
1009 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
1010 {
1011         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1012         return set80211param(priv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
1013 }
1014
1015 static int
1016 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
1017 {
1018         return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
1019                                    addr);
1020 }
1021
1022 static int
1023 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
1024 {
1025         int authmode;
1026
1027         if ((auth_alg & WPA_AUTH_ALG_OPEN) &&
1028             (auth_alg & WPA_AUTH_ALG_SHARED))
1029                 authmode = IEEE80211_AUTH_AUTO;
1030         else if (auth_alg & WPA_AUTH_ALG_SHARED)
1031                 authmode = IEEE80211_AUTH_SHARED;
1032         else
1033                 authmode = IEEE80211_AUTH_OPEN;
1034
1035         return set80211param(priv, IEEE80211_IOC_AUTHMODE, authmode);
1036 }
1037
1038 static void
1039 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
1040 {
1041         struct bsd_driver_data *drv = ctx;
1042
1043         drv_event_eapol_rx(drv->ctx, src_addr, buf, len);
1044 }
1045
1046 static int
1047 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
1048 {
1049         struct bsd_driver_data *drv = priv;
1050         struct ieee80211req_mlme mlme;
1051         u32 mode;
1052         int privacy;
1053         int ret = 0;
1054
1055         wpa_printf(MSG_DEBUG,
1056                 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1057                 , __func__
1058                    , (unsigned int) params->ssid_len, params->ssid
1059                 , (unsigned int) params->wpa_ie_len
1060                 , params->pairwise_suite
1061                 , params->group_suite
1062                 , params->key_mgmt_suite
1063         );
1064
1065         switch (params->mode) {
1066         case IEEE80211_MODE_INFRA:
1067                 mode = 0 /* STA */;
1068                 break;
1069         case IEEE80211_MODE_IBSS:
1070                 mode = IFM_IEEE80211_IBSS;
1071                 break;
1072         case IEEE80211_MODE_AP:
1073                 mode = IFM_IEEE80211_HOSTAP;
1074                 break;
1075         default:
1076                 wpa_printf(MSG_ERROR, "%s: unknown operation mode", __func__);
1077                 return -1;
1078         }
1079         if (bsd_set_mediaopt(drv, IFM_OMASK, mode) < 0) {
1080                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1081                            __func__);
1082                 return -1;
1083         }
1084
1085         if (params->mode == IEEE80211_MODE_AP) {
1086                 drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
1087                                                 handle_read, drv, 0);
1088                 if (drv->sock_xmit == NULL)
1089                         return -1;
1090                 drv->is_ap = 1;
1091                 return 0;
1092         }
1093
1094         if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1095             < 0)
1096                 ret = -1;
1097         if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1098                 ret = -1;
1099         /* XXX error handling is wrong but unclear what to do... */
1100         if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1101                 return -1;
1102
1103         privacy = !(params->pairwise_suite == CIPHER_NONE &&
1104             params->group_suite == CIPHER_NONE &&
1105             params->key_mgmt_suite == KEY_MGMT_NONE &&
1106             params->wpa_ie_len == 0);
1107         wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1108
1109         if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1110                 return -1;
1111
1112         if (params->wpa_ie_len &&
1113             set80211param(drv, IEEE80211_IOC_WPA,
1114                           params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1115                 return -1;
1116
1117         os_memset(&mlme, 0, sizeof(mlme));
1118         mlme.im_op = IEEE80211_MLME_ASSOC;
1119         if (params->ssid != NULL)
1120                 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1121         mlme.im_ssid_len = params->ssid_len;
1122         if (params->bssid != NULL)
1123                 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1124         if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1125                 return -1;
1126         return ret;
1127 }
1128
1129 static int
1130 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
1131 {
1132         struct bsd_driver_data *drv = priv;
1133 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1134         struct ieee80211_scan_req sr;
1135         int i;
1136 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1137
1138         if (bsd_set_mediaopt(drv, IFM_OMASK, 0 /* STA */) < 0) {
1139                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1140                            __func__);
1141                 return -1;
1142         }
1143
1144         if (set80211param(drv, IEEE80211_IOC_ROAMING,
1145                           IEEE80211_ROAMING_MANUAL) < 0) {
1146                 wpa_printf(MSG_ERROR, "%s: failed to set "
1147                            "wpa_supplicant-based roaming: %s", __func__,
1148                            strerror(errno));
1149                 return -1;
1150         }
1151
1152         if (wpa_driver_bsd_set_wpa(drv, 1) < 0) {
1153                 wpa_printf(MSG_ERROR, "%s: failed to set wpa: %s", __func__,
1154                            strerror(errno));
1155                 return -1;
1156         }
1157
1158         /* NB: interface must be marked UP to do a scan */
1159         if (bsd_ctrl_iface(drv, 1) < 0)
1160                 return -1;
1161
1162 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1163         os_memset(&sr, 0, sizeof(sr));
1164         sr.sr_flags = IEEE80211_IOC_SCAN_ACTIVE | IEEE80211_IOC_SCAN_ONCE |
1165                 IEEE80211_IOC_SCAN_NOJOIN;
1166         sr.sr_duration = IEEE80211_IOC_SCAN_FOREVER;
1167         if (params->num_ssids > 0) {
1168                 sr.sr_nssid = params->num_ssids;
1169 #if 0
1170                 /* Boundary check is done by upper layer */
1171                 if (sr.sr_nssid > IEEE80211_IOC_SCAN_MAX_SSID)
1172                         sr.sr_nssid = IEEE80211_IOC_SCAN_MAX_SSID;
1173 #endif
1174
1175                 /* NB: check scan cache first */
1176                 sr.sr_flags |= IEEE80211_IOC_SCAN_CHECK;
1177         }
1178         for (i = 0; i < sr.sr_nssid; i++) {
1179                 sr.sr_ssid[i].len = params->ssids[i].ssid_len;
1180                 os_memcpy(sr.sr_ssid[i].ssid, params->ssids[i].ssid,
1181                           sr.sr_ssid[i].len);
1182         }
1183
1184         /* NB: net80211 delivers a scan complete event so no need to poll */
1185         return set80211var(drv, IEEE80211_IOC_SCAN_REQ, &sr, sizeof(sr));
1186 #else /* IEEE80211_IOC_SCAN_MAX_SSID */
1187         /* set desired ssid before scan */
1188         if (bsd_set_ssid(drv, params->ssids[0].ssid,
1189                          params->ssids[0].ssid_len) < 0)
1190                 return -1;
1191
1192         /* NB: net80211 delivers a scan complete event so no need to poll */
1193         return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1194 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1195 }
1196
1197 static void
1198 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1199 {
1200         struct bsd_driver_data *drv = sock_ctx;
1201         char *buf;
1202         struct if_announcemsghdr *ifan;
1203         struct if_msghdr *ifm;
1204         struct rt_msghdr *rtm;
1205         union wpa_event_data event;
1206         struct ieee80211_michael_event *mic;
1207         struct ieee80211_leave_event *leave;
1208         struct ieee80211_join_event *join;
1209         int n, len;
1210
1211         len = rtbuf_len();
1212
1213         buf = os_malloc(len);
1214         if (buf == NULL) {
1215                 wpa_printf(MSG_ERROR, "%s os_malloc() failed\n", __func__);
1216                 return;
1217         }
1218
1219         n = read(sock, buf, len);
1220         if (n < 0) {
1221                 if (errno != EINTR && errno != EAGAIN)
1222                         wpa_printf(MSG_ERROR, "%s read() failed: %s\n",
1223                                    __func__, strerror(errno));
1224                 os_free(buf);
1225                 return;
1226         }
1227
1228         rtm = (struct rt_msghdr *) buf;
1229         if (rtm->rtm_version != RTM_VERSION) {
1230                 wpa_printf(MSG_DEBUG, "Invalid routing message version=%d",
1231                            rtm->rtm_version);
1232                 os_free(buf);
1233                 return;
1234         }
1235         os_memset(&event, 0, sizeof(event));
1236         switch (rtm->rtm_type) {
1237         case RTM_IFANNOUNCE:
1238                 ifan = (struct if_announcemsghdr *) rtm;
1239                 if (ifan->ifan_index != drv->ifindex)
1240                         break;
1241                 os_strlcpy(event.interface_status.ifname, drv->ifname,
1242                            sizeof(event.interface_status.ifname));
1243                 switch (ifan->ifan_what) {
1244                 case IFAN_DEPARTURE:
1245                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1246                 default:
1247                         os_free(buf);
1248                         return;
1249                 }
1250                 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1251                            event.interface_status.ifname,
1252                            ifan->ifan_what == IFAN_DEPARTURE ?
1253                                 "removed" : "added");
1254                 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1255                 break;
1256         case RTM_IEEE80211:
1257                 ifan = (struct if_announcemsghdr *) rtm;
1258                 if (ifan->ifan_index != drv->ifindex)
1259                         break;
1260                 switch (ifan->ifan_what) {
1261                 case RTM_IEEE80211_ASSOC:
1262                 case RTM_IEEE80211_REASSOC:
1263                         if (drv->is_ap)
1264                                 break;
1265                         wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1266                         break;
1267                 case RTM_IEEE80211_DISASSOC:
1268                         if (drv->is_ap)
1269                                 break;
1270                         wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1271                         break;
1272                 case RTM_IEEE80211_SCAN:
1273                         if (drv->is_ap)
1274                                 break;
1275                         wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1276                         break;
1277                 case RTM_IEEE80211_LEAVE:
1278                         leave = (struct ieee80211_leave_event *) &ifan[1];
1279                         drv_event_disassoc(ctx, leave->iev_addr);
1280                         break;
1281                 case RTM_IEEE80211_JOIN:
1282 #ifdef RTM_IEEE80211_REJOIN
1283                 case RTM_IEEE80211_REJOIN:
1284 #endif
1285                         join = (struct ieee80211_join_event *) &ifan[1];
1286                         bsd_new_sta(drv, ctx, join->iev_addr);
1287                         break;
1288                 case RTM_IEEE80211_REPLAY:
1289                         /* ignore */
1290                         break;
1291                 case RTM_IEEE80211_MICHAEL:
1292                         mic = (struct ieee80211_michael_event *) &ifan[1];
1293                         wpa_printf(MSG_DEBUG,
1294                                 "Michael MIC failure wireless event: "
1295                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1296                                 MAC2STR(mic->iev_src));
1297
1298                         os_memset(&event, 0, sizeof(event));
1299                         event.michael_mic_failure.unicast =
1300                                 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1301                         wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1302                                 &event);
1303                         break;
1304                 }
1305                 break;
1306         case RTM_IFINFO:
1307                 ifm = (struct if_msghdr *) rtm;
1308                 if (ifm->ifm_index != drv->ifindex)
1309                         break;
1310                 if ((rtm->rtm_flags & RTF_UP) == 0) {
1311                         os_strlcpy(event.interface_status.ifname, drv->ifname,
1312                                    sizeof(event.interface_status.ifname));
1313                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1314                         wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1315                                    event.interface_status.ifname);
1316                         wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1317                 }
1318                 break;
1319         }
1320         os_free(buf);
1321 }
1322
1323 static void
1324 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1325                               struct ieee80211req_scan_result *sr)
1326 {
1327         struct wpa_scan_res *result, **tmp;
1328         size_t extra_len;
1329         u8 *pos;
1330
1331         extra_len = 2 + sr->isr_ssid_len;
1332         extra_len += 2 + sr->isr_nrates;
1333         extra_len += 3; /* ERP IE */
1334         extra_len += sr->isr_ie_len;
1335
1336         result = os_zalloc(sizeof(*result) + extra_len);
1337         if (result == NULL)
1338                 return;
1339         os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1340         result->freq = sr->isr_freq;
1341         result->beacon_int = sr->isr_intval;
1342         result->caps = sr->isr_capinfo;
1343         result->qual = sr->isr_rssi;
1344         result->noise = sr->isr_noise;
1345         /*
1346          * the rssi value reported by the kernel is in 0.5dB steps relative to
1347          * the reported noise floor. see ieee80211_node.h for details.
1348          */
1349         result->level = sr->isr_rssi / 2 + sr->isr_noise;
1350
1351         pos = (u8 *)(result + 1);
1352
1353         *pos++ = WLAN_EID_SSID;
1354         *pos++ = sr->isr_ssid_len;
1355         os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1356         pos += sr->isr_ssid_len;
1357
1358         /*
1359          * Deal all rates as supported rate.
1360          * Because net80211 doesn't report extended supported rate or not.
1361          */
1362         *pos++ = WLAN_EID_SUPP_RATES;
1363         *pos++ = sr->isr_nrates;
1364         os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1365         pos += sr->isr_nrates;
1366
1367         *pos++ = WLAN_EID_ERP_INFO;
1368         *pos++ = 1;
1369         *pos++ = sr->isr_erp;
1370
1371         os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1372         pos += sr->isr_ie_len;
1373
1374         result->ie_len = pos - (u8 *)(result + 1);
1375
1376         tmp = os_realloc_array(res->res, res->num + 1,
1377                                sizeof(struct wpa_scan_res *));
1378         if (tmp == NULL) {
1379                 os_free(result);
1380                 return;
1381         }
1382         tmp[res->num++] = result;
1383         res->res = tmp;
1384 }
1385
1386 struct wpa_scan_results *
1387 wpa_driver_bsd_get_scan_results2(void *priv)
1388 {
1389         struct ieee80211req_scan_result *sr;
1390         struct wpa_scan_results *res;
1391         int len, rest;
1392         uint8_t buf[24*1024], *pos;
1393
1394         len = get80211var(priv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1395         if (len < 0)
1396                 return NULL;
1397
1398         res = os_zalloc(sizeof(*res));
1399         if (res == NULL)
1400                 return NULL;
1401
1402         pos = buf;
1403         rest = len;
1404         while (rest >= sizeof(struct ieee80211req_scan_result)) {
1405                 sr = (struct ieee80211req_scan_result *)pos;
1406                 wpa_driver_bsd_add_scan_entry(res, sr);
1407                 pos += sr->isr_len;
1408                 rest -= sr->isr_len;
1409         }
1410
1411         wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1412                    len, (unsigned long)res->num);
1413
1414         return res;
1415 }
1416
1417 static int wpa_driver_bsd_capa(struct bsd_driver_data *drv)
1418 {
1419 #ifdef IEEE80211_IOC_DEVCAPS
1420 /* kernel definitions copied from net80211/ieee80211_var.h */
1421 #define IEEE80211_CIPHER_WEP            0
1422 #define IEEE80211_CIPHER_TKIP           1
1423 #define IEEE80211_CIPHER_AES_CCM        3
1424 #define IEEE80211_CRYPTO_WEP            (1<<IEEE80211_CIPHER_WEP)
1425 #define IEEE80211_CRYPTO_TKIP           (1<<IEEE80211_CIPHER_TKIP)
1426 #define IEEE80211_CRYPTO_AES_CCM        (1<<IEEE80211_CIPHER_AES_CCM)
1427 #define IEEE80211_C_HOSTAP      0x00000400      /* CAPABILITY: HOSTAP avail */
1428 #define IEEE80211_C_WPA1        0x00800000      /* CAPABILITY: WPA1 avail */
1429 #define IEEE80211_C_WPA2        0x01000000      /* CAPABILITY: WPA2 avail */
1430         struct ieee80211_devcaps_req devcaps;
1431
1432         if (get80211var(drv, IEEE80211_IOC_DEVCAPS, &devcaps,
1433                         sizeof(devcaps)) < 0) {
1434                 wpa_printf(MSG_ERROR, "failed to IEEE80211_IOC_DEVCAPS: %s",
1435                            strerror(errno));
1436                 return -1;
1437         }
1438
1439         wpa_printf(MSG_DEBUG, "%s: drivercaps=0x%08x,cryptocaps=0x%08x",
1440                    __func__, devcaps.dc_drivercaps, devcaps.dc_cryptocaps);
1441
1442         if (devcaps.dc_drivercaps & IEEE80211_C_WPA1)
1443                 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1444                         WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1445         if (devcaps.dc_drivercaps & IEEE80211_C_WPA2)
1446                 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1447                         WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1448
1449         if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_WEP)
1450                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1451                         WPA_DRIVER_CAPA_ENC_WEP104;
1452         if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_TKIP)
1453                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1454         if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_AES_CCM)
1455                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1456
1457         if (devcaps.dc_drivercaps & IEEE80211_C_HOSTAP)
1458                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1459 #undef IEEE80211_CIPHER_WEP
1460 #undef IEEE80211_CIPHER_TKIP
1461 #undef IEEE80211_CIPHER_AES_CCM
1462 #undef IEEE80211_CRYPTO_WEP
1463 #undef IEEE80211_CRYPTO_TKIP
1464 #undef IEEE80211_CRYPTO_AES_CCM
1465 #undef IEEE80211_C_HOSTAP
1466 #undef IEEE80211_C_WPA1
1467 #undef IEEE80211_C_WPA2
1468 #else /* IEEE80211_IOC_DEVCAPS */
1469         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1470         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1471                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1472                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1473                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1474         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1475                 WPA_DRIVER_CAPA_ENC_WEP104 |
1476                 WPA_DRIVER_CAPA_ENC_TKIP |
1477                 WPA_DRIVER_CAPA_ENC_CCMP;
1478         drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1479 #endif /* IEEE80211_IOC_DEVCAPS */
1480 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1481         drv->capa.max_scan_ssids = IEEE80211_IOC_SCAN_MAX_SSID;
1482 #else /* IEEE80211_IOC_SCAN_MAX_SSID */
1483         drv->capa.max_scan_ssids = 1;
1484 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1485         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1486                 WPA_DRIVER_AUTH_SHARED |
1487                 WPA_DRIVER_AUTH_LEAP;
1488         return 0;
1489 }
1490
1491 static void *
1492 wpa_driver_bsd_init(void *ctx, const char *ifname)
1493 {
1494 #define GETPARAM(drv, param, v) \
1495         (((v) = get80211param(drv, param)) != -1)
1496         struct bsd_driver_data *drv;
1497
1498         drv = os_zalloc(sizeof(*drv));
1499         if (drv == NULL)
1500                 return NULL;
1501         /*
1502          * NB: We require the interface name be mappable to an index.
1503          *     This implies we do not support having wpa_supplicant
1504          *     wait for an interface to appear.  This seems ok; that
1505          *     doesn't belong here; it's really the job of devd.
1506          */
1507         drv->ifindex = if_nametoindex(ifname);
1508         if (drv->ifindex == 0) {
1509                 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1510                            __func__, ifname);
1511                 goto fail1;
1512         }
1513         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1514         if (drv->sock < 0)
1515                 goto fail1;
1516
1517         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1518         /* Down interface during setup. */
1519         if (bsd_ctrl_iface(drv, 0) < 0)
1520                 goto fail;
1521
1522         drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1523         if (drv->route < 0)
1524                 goto fail;
1525         eloop_register_read_sock(drv->route,
1526                 wpa_driver_bsd_event_receive, ctx, drv);
1527
1528         drv->ctx = ctx;
1529
1530         if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1531                 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1532                         __func__, strerror(errno));
1533                 goto fail;
1534         }
1535         if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1536                 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1537                         __func__, strerror(errno));
1538                 goto fail;
1539         }
1540         if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1541                 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1542                         __func__, strerror(errno));
1543                 goto fail;
1544         }
1545
1546         if (wpa_driver_bsd_capa(drv))
1547                 goto fail;
1548
1549         drv->opmode = get80211opmode(drv);
1550
1551         return drv;
1552 fail:
1553         close(drv->sock);
1554 fail1:
1555         os_free(drv);
1556         return NULL;
1557 #undef GETPARAM
1558 }
1559
1560 static void
1561 wpa_driver_bsd_deinit(void *priv)
1562 {
1563         struct bsd_driver_data *drv = priv;
1564
1565         wpa_driver_bsd_set_wpa(drv, 0);
1566         eloop_unregister_read_sock(drv->route);
1567
1568         /* NB: mark interface down */
1569         bsd_ctrl_iface(drv, 0);
1570
1571         wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1572         if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1573                 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1574                         __func__);
1575
1576         if (drv->sock_xmit != NULL)
1577                 l2_packet_deinit(drv->sock_xmit);
1578         (void) close(drv->route);               /* ioctl socket */
1579         (void) close(drv->sock);                /* event socket */
1580         os_free(drv);
1581 }
1582
1583 static int
1584 wpa_driver_bsd_get_capa(void *priv, struct wpa_driver_capa *capa)
1585 {
1586         struct bsd_driver_data *drv = priv;
1587
1588         os_memcpy(capa, &drv->capa, sizeof(*capa));
1589         return 0;
1590 }
1591 #endif /* HOSTAPD */
1592
1593
1594 const struct wpa_driver_ops wpa_driver_bsd_ops = {
1595         .name                   = "bsd",
1596         .desc                   = "BSD 802.11 support",
1597 #ifdef HOSTAPD
1598         .hapd_init              = bsd_init,
1599         .hapd_deinit            = bsd_deinit,
1600         .set_privacy            = bsd_set_privacy,
1601         .get_seqnum             = bsd_get_seqnum,
1602         .flush                  = bsd_flush,
1603         .read_sta_data          = bsd_read_sta_driver_data,
1604         .sta_disassoc           = bsd_sta_disassoc,
1605         .sta_deauth             = bsd_sta_deauth,
1606         .sta_set_flags          = bsd_set_sta_authorized,
1607         .commit                 = bsd_commit,
1608 #else /* HOSTAPD */
1609         .init                   = wpa_driver_bsd_init,
1610         .deinit                 = wpa_driver_bsd_deinit,
1611         .get_bssid              = wpa_driver_bsd_get_bssid,
1612         .get_ssid               = wpa_driver_bsd_get_ssid,
1613         .set_countermeasures    = wpa_driver_bsd_set_countermeasures,
1614         .scan2                  = wpa_driver_bsd_scan,
1615         .get_scan_results2      = wpa_driver_bsd_get_scan_results2,
1616         .deauthenticate         = wpa_driver_bsd_deauthenticate,
1617         .associate              = wpa_driver_bsd_associate,
1618         .get_capa               = wpa_driver_bsd_get_capa,
1619 #endif /* HOSTAPD */
1620         .set_freq               = bsd_set_freq,
1621         .set_key                = bsd_set_key,
1622         .set_ieee8021x          = bsd_set_ieee8021x,
1623         .hapd_set_ssid          = bsd_set_ssid,
1624         .hapd_get_ssid          = bsd_get_ssid,
1625         .hapd_send_eapol        = bsd_send_eapol,
1626         .set_generic_elem       = bsd_set_opt_ie,
1627 };