src/drivers/driver_bsd.c

   1 /*
   2  * WPA Supplicant - driver interaction with BSD net80211 layer
   3  * Copyright (c) 2004, Sam Leffler <sam@errno.com>
   4  * Copyright (c) 2004, 2Wire, Inc
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Alternatively, this software may be distributed under the terms of BSD
  11  * license.
  12  *
  13  * See README and COPYING for more details.
  14  */
  15
  16 #include "includes.h"
  17 #include <sys/ioctl.h>
  18
  19 #include "common.h"
  20 #include "driver.h"
  21 #include "eloop.h"
  22 #include "ieee802_11_defs.h"
  23
  24 #include <net/if.h>
  25
  26 #ifdef __NetBSD__
  27 #include <net/if_ether.h>
  28 #else
  29 #include <net/ethernet.h>
  30 #endif
  31 #include <net/route.h>
  32
  33 #ifdef __DragonFly__
  34 #include <netproto/802_11/ieee80211_ioctl.h>
  35 #include <netproto/802_11/ieee80211_dragonfly.h>
  36 #else /* __DragonFly__ */
  37 #include <net80211/ieee80211.h>
  38 #include <net80211/ieee80211_crypto.h>
  39 #include <net80211/ieee80211_ioctl.h>
  40 #endif /* __DragonFly__ */
  41 #if __FreeBSD__
  42 #include <net80211/ieee80211_freebsd.h>
  43 #endif
  44 #if __NetBSD__
  45 #include <net80211/ieee80211_netbsd.h>
  46 #endif
  47
  48 /* Generic functions for hostapd and wpa_supplicant */
  49
  50 static int
  51 bsd_set80211var(int s, const char *ifname, int op, const void *arg, int arg_len)
  52 {
  53         struct ieee80211req ireq;
  54
  55         os_memset(&ireq, 0, sizeof(ireq));
  56         os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
  57         ireq.i_type = op;
  58         ireq.i_len = arg_len;
  59         ireq.i_data = (void *) arg;
  60
  61         if (ioctl(s, SIOCS80211, &ireq) < 0) {
  62                 fprintf(stderr, "ioctl[SIOCS80211, op %u, len %u]: %s\n",
  63                         op, arg_len, strerror(errno));
  64                 return -1;
  65         }
  66         return 0;
  67 }
  68
  69 static int
  70 bsd_get80211var(int s, const char *ifname, int op, void *arg, int arg_len)
  71 {
  72         struct ieee80211req ireq;
  73
  74         os_memset(&ireq, 0, sizeof(ireq));
  75         os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
  76         ireq.i_type = op;
  77         ireq.i_len = arg_len;
  78         ireq.i_data = arg;
  79
  80         if (ioctl(s, SIOCG80211, &ireq) < 0) {
  81                 fprintf(stderr, "ioctl[SIOCG80211, op %u, len %u]: %s\n",
  82                         op, arg_len, strerror(errno));
  83                 return -1;
  84         }
  85         return ireq.i_len;
  86 }
  87
  88 static int
  89 bsd_set80211param(int s, const char *ifname, int op, int arg)
  90 {
  91         struct ieee80211req ireq;
  92
  93         os_memset(&ireq, 0, sizeof(ireq));
  94         os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
  95         ireq.i_type = op;
  96         ireq.i_val = arg;
  97
  98         if (ioctl(s, SIOCS80211, &ireq) < 0) {
  99                 fprintf(stderr, "ioctl[SIOCS80211, op %u, arg 0x%x]: %s\n",
 100                         op, arg, strerror(errno));
 101                 return -1;
 102         }
 103         return 0;
 104 }
 105
 106 static int
 107 bsd_get_ssid(int s, const char *ifname, u8 *ssid)
 108 {
 109 #ifdef SIOCG80211NWID
 110         struct ieee80211_nwid nwid;
 111         struct ifreq ifr;
 112
 113         os_memset(&ifr, 0, sizeof(ifr));
 114         os_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
 115         ifr.ifr_data = (void *)&nwid;
 116         if (ioctl(s, SIOCG80211NWID, &ifr) < 0 ||
 117             nwid.i_len > IEEE80211_NWID_LEN)
 118                 return -1;
 119         os_memcpy(ssid, nwid.i_nwid, nwid.i_len);
 120         return nwid.i_len;
 121 #else
 122         return bsd_get80211var(s, ifname, IEEE80211_IOC_SSID,
 123                 ssid, IEEE80211_NWID_LEN);
 124 #endif
 125 }
 126
 127 static int
 128 bsd_set_ssid(int s, const char *ifname, const u8 *ssid, size_t ssid_len)
 129 {
 130 #ifdef SIOCS80211NWID
 131         struct ieee80211_nwid nwid;
 132         struct ifreq ifr;
 133
 134         os_memcpy(nwid.i_nwid, ssid, ssid_len);
 135         nwid.i_len = ssid_len;
 136         os_memset(&ifr, 0, sizeof(ifr));
 137         os_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
 138         ifr.ifr_data = (void *)&nwid;
 139         return ioctl(s, SIOCS80211NWID, &ifr);
 140 #else
 141         return bsd_set80211var(s, ifname, IEEE80211_IOC_SSID, ssid, ssid_len);
 142 #endif
 143 }
 144
 145
 146 #ifdef HOSTAPD
 147
 148 /*
 149  * Avoid conflicts with hostapd definitions by undefining couple of defines
 150  * from net80211 header files.
 151  */
 152 #undef RSN_VERSION
 153 #undef WPA_VERSION
 154 #undef WPA_OUI_TYPE
 155
 156 #include "l2_packet/l2_packet.h"
 157 #include "../../hostapd/hostapd.h"
 158 #include "../../hostapd/config.h"
 159 #include "../../hostapd/eapol_sm.h"
 160 #include "../../hostapd/sta_flags.h"
 161
 162 struct bsd_driver_data {
 163         struct hostapd_data *hapd;              /* back pointer */
 164
 165         char    iface[IFNAMSIZ + 1];
 166         struct l2_packet_data *sock_xmit;       /* raw packet xmit socket */
 167         int     ioctl_sock;                     /* socket for ioctl() use */
 168         int     wext_sock;                      /* socket for wireless events */
 169 };
 170
 171 static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
 172                           int reason_code);
 173
 174 static int
 175 set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
 176 {
 177         return bsd_set80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
 178 }
 179
 180 static int
 181 get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
 182 {
 183         return bsd_get80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
 184 }
 185
 186 static int
 187 set80211param(struct bsd_driver_data *drv, int op, int arg)
 188 {
 189         return bsd_set80211param(drv->ioctl_sock, drv->iface, op, arg);
 190 }
 191
 192 static const char *
 193 ether_sprintf(const u8 *addr)
 194 {
 195         static char buf[sizeof(MACSTR)];
 196
 197         if (addr != NULL)
 198                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 199         else
 200                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 201         return buf;
 202 }
 203
 204 /*
 205  * Configure WPA parameters.
 206  */
 207 static int
 208 bsd_configure_wpa(struct bsd_driver_data *drv)
 209 {
 210         static const char *ciphernames[] =
 211                 { "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
 212         struct hostapd_data *hapd = drv->hapd;
 213         struct hostapd_bss_config *conf = hapd->conf;
 214         int v;
 215
 216         switch (conf->wpa_group) {
 217         case WPA_CIPHER_CCMP:
 218                 v = IEEE80211_CIPHER_AES_CCM;
 219                 break;
 220         case WPA_CIPHER_TKIP:
 221                 v = IEEE80211_CIPHER_TKIP;
 222                 break;
 223         case WPA_CIPHER_WEP104:
 224                 v = IEEE80211_CIPHER_WEP;
 225                 break;
 226         case WPA_CIPHER_WEP40:
 227                 v = IEEE80211_CIPHER_WEP;
 228                 break;
 229         case WPA_CIPHER_NONE:
 230                 v = IEEE80211_CIPHER_NONE;
 231                 break;
 232         default:
 233                 printf("Unknown group key cipher %u\n",
 234                         conf->wpa_group);
 235                 return -1;
 236         }
 237         wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
 238                    __func__, ciphernames[v], v);
 239         if (set80211param(drv, IEEE80211_IOC_MCASTCIPHER, v)) {
 240                 printf("Unable to set group key cipher to %u (%s)\n",
 241                         v, ciphernames[v]);
 242                 return -1;
 243         }
 244         if (v == IEEE80211_CIPHER_WEP) {
 245                 /* key length is done only for specific ciphers */
 246                 v = (conf->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 247                 if (set80211param(drv, IEEE80211_IOC_MCASTKEYLEN, v)) {
 248                         printf("Unable to set group key length to %u\n", v);
 249                         return -1;
 250                 }
 251         }
 252
 253         v = 0;
 254         if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 255                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 256         if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 257                 v |= 1<<IEEE80211_CIPHER_TKIP;
 258         if (conf->wpa_pairwise & WPA_CIPHER_NONE)
 259                 v |= 1<<IEEE80211_CIPHER_NONE;
 260         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 261         if (set80211param(drv, IEEE80211_IOC_UCASTCIPHERS, v)) {
 262                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 263                 return -1;
 264         }
 265
 266         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 267                    __func__, conf->wpa_key_mgmt);
 268         if (set80211param(drv, IEEE80211_IOC_KEYMGTALGS, conf->wpa_key_mgmt)) {
 269                 printf("Unable to set key management algorithms to 0x%x\n",
 270                         conf->wpa_key_mgmt);
 271                 return -1;
 272         }
 273
 274         v = 0;
 275         if (conf->rsn_preauth)
 276                 v |= BIT(0);
 277         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 278                    __func__, conf->rsn_preauth);
 279         if (set80211param(drv, IEEE80211_IOC_RSNCAPS, v)) {
 280                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 281                 return -1;
 282         }
 283
 284         wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, conf->wpa);
 285         if (set80211param(drv, IEEE80211_IOC_WPA, conf->wpa)) {
 286                 printf("Unable to set WPA to %u\n", conf->wpa);
 287                 return -1;
 288         }
 289         return 0;
 290 }
 291
 292
 293 static int
 294 bsd_set_iface_flags(void *priv, int dev_up)
 295 {
 296         struct bsd_driver_data *drv = priv;
 297         struct ifreq ifr;
 298
 299         wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
 300
 301         if (drv->ioctl_sock < 0)
 302                 return -1;
 303
 304         memset(&ifr, 0, sizeof(ifr));
 305         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
 306
 307         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 308                 perror("ioctl[SIOCGIFFLAGS]");
 309                 return -1;
 310         }
 311
 312         if (dev_up)
 313                 ifr.ifr_flags |= IFF_UP;
 314         else
 315                 ifr.ifr_flags &= ~IFF_UP;
 316
 317         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 318                 perror("ioctl[SIOCSIFFLAGS]");
 319                 return -1;
 320         }
 321
 322         return 0;
 323 }
 324
 325 static int
 326 bsd_set_ieee8021x(const char *ifname, void *priv, int enabled)
 327 {
 328         struct bsd_driver_data *drv = priv;
 329         struct hostapd_data *hapd = drv->hapd;
 330         struct hostapd_bss_config *conf = hapd->conf;
 331
 332         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 333
 334         if (!enabled) {
 335                 /* XXX restore state */
 336                 return set80211param(priv, IEEE80211_IOC_AUTHMODE,
 337                         IEEE80211_AUTH_AUTO);
 338         }
 339         if (!conf->wpa && !conf->ieee802_1x) {
 340                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 341                         HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
 342                 return -1;
 343         }
 344         if (conf->wpa && bsd_configure_wpa(drv) != 0) {
 345                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 346                         HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
 347                 return -1;
 348         }
 349         if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
 350                 (conf->wpa ?  IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 351                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 352                         HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
 353                 return -1;
 354         }
 355         return bsd_set_iface_flags(priv, 1);
 356 }
 357
 358 static int
 359 bsd_set_privacy(const char *ifname, void *priv, int enabled)
 360 {
 361         struct bsd_driver_data *drv = priv;
 362
 363         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 364
 365         return set80211param(drv, IEEE80211_IOC_PRIVACY, enabled);
 366 }
 367
 368 static int
 369 bsd_set_sta_authorized(void *priv, const u8 *addr, int authorized)
 370 {
 371         struct bsd_driver_data *drv = priv;
 372         struct ieee80211req_mlme mlme;
 373
 374         wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
 375                    __func__, ether_sprintf(addr), authorized);
 376
 377         if (authorized)
 378                 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
 379         else
 380                 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
 381         mlme.im_reason = 0;
 382         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 383         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
 384 }
 385
 386 static int
 387 bsd_sta_set_flags(void *priv, const u8 *addr, int total_flags, int flags_or,
 388                   int flags_and)
 389 {
 390         /* For now, only support setting Authorized flag */
 391         if (flags_or & WLAN_STA_AUTHORIZED)
 392                 return bsd_set_sta_authorized(priv, addr, 1);
 393         if (!(flags_and & WLAN_STA_AUTHORIZED))
 394                 return bsd_set_sta_authorized(priv, addr, 0);
 395         return 0;
 396 }
 397
 398 static int
 399 bsd_del_key(void *priv, const u8 *addr, int key_idx)
 400 {
 401         struct bsd_driver_data *drv = priv;
 402         struct ieee80211req_del_key wk;
 403
 404         wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
 405                    __func__, ether_sprintf(addr), key_idx);
 406
 407         memset(&wk, 0, sizeof(wk));
 408         if (addr != NULL) {
 409                 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 410                 wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */
 411         } else {
 412                 wk.idk_keyix = key_idx;
 413         }
 414
 415         return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
 416 }
 417
 418 static int
 419 bsd_set_key(const char *ifname, void *priv, wpa_alg alg,
 420             const u8 *addr, int key_idx, int set_tx, const u8 *seq,
 421             size_t seq_len, const u8 *key, size_t key_len)
 422 {
 423         struct bsd_driver_data *drv = priv;
 424         struct ieee80211req_key wk;
 425         u_int8_t cipher;
 426
 427         if (alg == WPA_ALG_NONE)
 428                 return bsd_del_key(drv, addr, key_idx);
 429
 430         wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
 431                    __func__, alg, ether_sprintf(addr), key_idx);
 432
 433         if (alg == WPA_ALG_WEP)
 434                 cipher = IEEE80211_CIPHER_WEP;
 435         else if (alg == WPA_ALG_TKIP)
 436                 cipher = IEEE80211_CIPHER_TKIP;
 437         else if (alg == WPA_ALG_CCMP)
 438                 cipher = IEEE80211_CIPHER_AES_CCM;
 439         else {
 440                 printf("%s: unknown/unsupported algorithm %d\n",
 441                         __func__, alg);
 442                 return -1;
 443         }
 444
 445         if (key_len > sizeof(wk.ik_keydata)) {
 446                 printf("%s: key length %d too big\n", __func__, (int) key_len);
 447                 return -3;
 448         }
 449
 450         memset(&wk, 0, sizeof(wk));
 451         wk.ik_type = cipher;
 452         wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
 453         if (addr == NULL) {
 454                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 455                 wk.ik_keyix = key_idx;
 456                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 457         } else {
 458                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 459                 wk.ik_keyix = IEEE80211_KEYIX_NONE;
 460         }
 461         wk.ik_keylen = key_len;
 462         memcpy(wk.ik_keydata, key, key_len);
 463
 464         return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
 465 }
 466
 467
 468 static int
 469 bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 470                u8 *seq)
 471 {
 472         struct bsd_driver_data *drv = priv;
 473         struct ieee80211req_key wk;
 474
 475         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 476                    __func__, ether_sprintf(addr), idx);
 477
 478         memset(&wk, 0, sizeof(wk));
 479         if (addr == NULL)
 480                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 481         else
 482                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 483         wk.ik_keyix = idx;
 484
 485         if (get80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
 486                 printf("Failed to get encryption.\n");
 487                 return -1;
 488         }
 489
 490 #ifdef WORDS_BIGENDIAN
 491         {
 492                 /*
 493                  * wk.ik_keytsc is in host byte order (big endian), need to
 494                  * swap it to match with the byte order used in WPA.
 495                  */
 496                 int i;
 497                 u8 tmp[WPA_KEY_RSC_LEN];
 498                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 499                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 500                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 501                 }
 502         }
 503 #else /* WORDS_BIGENDIAN */
 504         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 505 #endif /* WORDS_BIGENDIAN */
 506         return 0;
 507 }
 508
 509
 510 static int
 511 bsd_flush(void *priv)
 512 {
 513         u8 allsta[IEEE80211_ADDR_LEN];
 514
 515         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 516         return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
 517 }
 518
 519
 520 static int
 521 bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 522                          const u8 *addr)
 523 {
 524         struct bsd_driver_data *drv = priv;
 525         struct ieee80211req_sta_stats stats;
 526
 527         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 528         if (get80211var(drv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats)) > 0) {
 529                 /* XXX? do packets counts include non-data frames? */
 530                 data->rx_packets = stats.is_stats.ns_rx_data;
 531                 data->rx_bytes = stats.is_stats.ns_rx_bytes;
 532                 data->tx_packets = stats.is_stats.ns_tx_data;
 533                 data->tx_bytes = stats.is_stats.ns_tx_bytes;
 534         }
 535         return 0;
 536 }
 537
 538 static int
 539 bsd_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
 540 {
 541         /*
 542          * Do nothing; we setup parameters at startup that define the
 543          * contents of the beacon information element.
 544          */
 545         return 0;
 546 }
 547
 548 static int
 549 bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
 550 {
 551         struct bsd_driver_data *drv = priv;
 552         struct ieee80211req_mlme mlme;
 553
 554         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 555                    __func__, ether_sprintf(addr), reason_code);
 556
 557         mlme.im_op = IEEE80211_MLME_DEAUTH;
 558         mlme.im_reason = reason_code;
 559         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 560         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
 561 }
 562
 563 static int
 564 bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
 565                  int reason_code)
 566 {
 567         struct bsd_driver_data *drv = priv;
 568         struct ieee80211req_mlme mlme;
 569
 570         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 571                    __func__, ether_sprintf(addr), reason_code);
 572
 573         mlme.im_op = IEEE80211_MLME_DISASSOC;
 574         mlme.im_reason = reason_code;
 575         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 576         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
 577 }
 578
 579 static int
 580 bsd_new_sta(struct bsd_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
 581 {
 582         struct hostapd_data *hapd = drv->hapd;
 583         struct ieee80211req_wpaie ie;
 584         int ielen = 0;
 585         u8 *iebuf = NULL;
 586
 587         /*
 588          * Fetch and validate any negotiated WPA/RSN parameters.
 589          */
 590         memset(&ie, 0, sizeof(ie));
 591         memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
 592         if (get80211var(drv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
 593                 printf("Failed to get WPA/RSN information element.\n");
 594                 goto no_ie;
 595         }
 596         iebuf = ie.wpa_ie;
 597         ielen = ie.wpa_ie[1];
 598         if (ielen == 0)
 599                 iebuf = NULL;
 600         else
 601                 ielen += 2;
 602
 603 no_ie:
 604         return hostapd_notif_assoc(hapd, addr, iebuf, ielen);
 605 }
 606
 607 static void
 608 bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
 609 {
 610         struct bsd_driver_data *drv = ctx;
 611         struct hostapd_data *hapd = drv->hapd;
 612         char buf[2048];
 613         struct if_announcemsghdr *ifan;
 614         struct rt_msghdr *rtm;
 615         struct ieee80211_michael_event *mic;
 616         struct ieee80211_join_event *join;
 617         struct ieee80211_leave_event *leave;
 618         int n;
 619
 620         n = read(sock, buf, sizeof(buf));
 621         if (n < 0) {
 622                 if (errno != EINTR && errno != EAGAIN)
 623                         perror("read(PF_ROUTE)");
 624                 return;
 625         }
 626
 627         rtm = (struct rt_msghdr *) buf;
 628         if (rtm->rtm_version != RTM_VERSION) {
 629                 wpa_printf(MSG_DEBUG, "Routing message version %d not "
 630                         "understood\n", rtm->rtm_version);
 631                 return;
 632         }
 633         ifan = (struct if_announcemsghdr *) rtm;
 634         switch (rtm->rtm_type) {
 635         case RTM_IEEE80211:
 636                 switch (ifan->ifan_what) {
 637                 case RTM_IEEE80211_ASSOC:
 638                 case RTM_IEEE80211_REASSOC:
 639                 case RTM_IEEE80211_DISASSOC:
 640                 case RTM_IEEE80211_SCAN:
 641                         break;
 642                 case RTM_IEEE80211_LEAVE:
 643                         leave = (struct ieee80211_leave_event *) &ifan[1];
 644                         hostapd_notif_disassoc(drv->hapd, leave->iev_addr);
 645                         break;
 646                 case RTM_IEEE80211_JOIN:
 647 #ifdef RTM_IEEE80211_REJOIN
 648                 case RTM_IEEE80211_REJOIN:
 649 #endif
 650                         join = (struct ieee80211_join_event *) &ifan[1];
 651                         bsd_new_sta(drv, join->iev_addr);
 652                         break;
 653                 case RTM_IEEE80211_REPLAY:
 654                         /* ignore */
 655                         break;
 656                 case RTM_IEEE80211_MICHAEL:
 657                         mic = (struct ieee80211_michael_event *) &ifan[1];
 658                         wpa_printf(MSG_DEBUG,
 659                                 "Michael MIC failure wireless event: "
 660                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
 661                                 MAC2STR(mic->iev_src));
 662                         hostapd_michael_mic_failure(hapd, mic->iev_src);
 663                         break;
 664                 }
 665                 break;
 666         }
 667 }
 668
 669 static int
 670 bsd_wireless_event_init(struct bsd_driver_data *drv)
 671 {
 672         int s;
 673
 674         drv->wext_sock = -1;
 675
 676         s = socket(PF_ROUTE, SOCK_RAW, 0);
 677         if (s < 0) {
 678                 perror("socket(PF_ROUTE,SOCK_RAW)");
 679                 return -1;
 680         }
 681         eloop_register_read_sock(s, bsd_wireless_event_receive, drv, NULL);
 682         drv->wext_sock = s;
 683
 684         return 0;
 685 }
 686
 687 static void
 688 bsd_wireless_event_deinit(struct bsd_driver_data *drv)
 689 {
 690         if (drv->wext_sock < 0)
 691                 return;
 692         eloop_unregister_read_sock(drv->wext_sock);
 693         close(drv->wext_sock);
 694 }
 695
 696
 697 static int
 698 bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
 699                int encrypt, const u8 *own_addr)
 700 {
 701         struct bsd_driver_data *drv = priv;
 702         unsigned char buf[3000];
 703         unsigned char *bp = buf;
 704         struct l2_ethhdr *eth;
 705         size_t len;
 706         int status;
 707
 708         /*
 709          * Prepend the Etherent header.  If the caller left us
 710          * space at the front we could just insert it but since
 711          * we don't know we copy to a local buffer.  Given the frequency
 712          * and size of frames this probably doesn't matter.
 713          */
 714         len = data_len + sizeof(struct l2_ethhdr);
 715         if (len > sizeof(buf)) {
 716                 bp = malloc(len);
 717                 if (bp == NULL) {
 718                         printf("EAPOL frame discarded, cannot malloc temp "
 719                                "buffer of size %u!\n", (unsigned int) len);
 720                         return -1;
 721                 }
 722         }
 723         eth = (struct l2_ethhdr *) bp;
 724         memcpy(eth->h_dest, addr, ETH_ALEN);
 725         memcpy(eth->h_source, own_addr, ETH_ALEN);
 726         eth->h_proto = htons(ETH_P_EAPOL);
 727         memcpy(eth+1, data, data_len);
 728
 729         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
 730
 731         status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
 732
 733         if (bp != buf)
 734                 free(bp);
 735         return status;
 736 }
 737
 738 static void
 739 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
 740 {
 741         struct bsd_driver_data *drv = ctx;
 742         hostapd_eapol_receive(drv->hapd, src_addr,
 743                               buf + sizeof(struct l2_ethhdr),
 744                               len - sizeof(struct l2_ethhdr));
 745 }
 746
 747 static int
 748 hostapd_bsd_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
 749 {
 750         struct bsd_driver_data *drv = priv;
 751         int ssid_len;
 752
 753         ssid_len = bsd_get_ssid(drv->ioctl_sock, drv->iface, buf);
 754         wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, ssid_len, buf);
 755
 756         return ssid_len;
 757 }
 758
 759 static int
 760 hostapd_bsd_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
 761 {
 762         struct bsd_driver_data *drv = priv;
 763
 764         wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, len, buf);
 765
 766         return bsd_set_ssid(drv->ioctl_sock, drv->iface, buf, len);
 767 }
 768
 769 static void *
 770 bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
 771 {
 772         struct bsd_driver_data *drv;
 773
 774         drv = os_zalloc(sizeof(struct bsd_driver_data));
 775         if (drv == NULL) {
 776                 printf("Could not allocate memory for bsd driver data\n");
 777                 goto bad;
 778         }
 779
 780         drv->hapd = hapd;
 781         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
 782         if (drv->ioctl_sock < 0) {
 783                 perror("socket[PF_INET,SOCK_DGRAM]");
 784                 goto bad;
 785         }
 786         memcpy(drv->iface, params->ifname, sizeof(drv->iface));
 787
 788         drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
 789                                         handle_read, drv, 1);
 790         if (drv->sock_xmit == NULL)
 791                 goto bad;
 792         if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
 793                 goto bad;
 794
 795         bsd_set_iface_flags(drv, 0);    /* mark down during setup */
 796         if (bsd_wireless_event_init(drv))
 797                 goto bad;
 798
 799         return drv;
 800 bad:
 801         if (drv->sock_xmit != NULL)
 802                 l2_packet_deinit(drv->sock_xmit);
 803         if (drv->ioctl_sock >= 0)
 804                 close(drv->ioctl_sock);
 805         if (drv != NULL)
 806                 free(drv);
 807         return NULL;
 808 }
 809
 810
 811 static void
 812 bsd_deinit(void *priv)
 813 {
 814         struct bsd_driver_data *drv = priv;
 815
 816         bsd_wireless_event_deinit(drv);
 817         (void) bsd_set_iface_flags(drv, 0);
 818         if (drv->ioctl_sock >= 0)
 819                 close(drv->ioctl_sock);
 820         if (drv->sock_xmit != NULL)
 821                 l2_packet_deinit(drv->sock_xmit);
 822         free(drv);
 823 }
 824
 825 const struct wpa_driver_ops wpa_driver_bsd_ops = {
 826         .name                   = "bsd",
 827         .hapd_init              = bsd_init,
 828         .hapd_deinit            = bsd_deinit,
 829         .set_ieee8021x          = bsd_set_ieee8021x,
 830         .set_privacy            = bsd_set_privacy,
 831         .set_key                = bsd_set_key,
 832         .get_seqnum             = bsd_get_seqnum,
 833         .flush                  = bsd_flush,
 834         .set_generic_elem       = bsd_set_opt_ie,
 835         .sta_set_flags          = bsd_sta_set_flags,
 836         .read_sta_data          = bsd_read_sta_driver_data,
 837         .hapd_send_eapol        = bsd_send_eapol,
 838         .sta_disassoc           = bsd_sta_disassoc,
 839         .sta_deauth             = bsd_sta_deauth,
 840         .hapd_set_ssid          = hostapd_bsd_set_ssid,
 841         .hapd_get_ssid          = hostapd_bsd_get_ssid,
 842 };
 843
 844 #else /* HOSTAPD */
 845
 846 struct wpa_driver_bsd_data {
 847         int     sock;                   /* open socket for 802.11 ioctls */
 848         int     route;                  /* routing socket for events */
 849         char    ifname[IFNAMSIZ+1];     /* interface name */
 850         unsigned int ifindex;           /* interface index */
 851         void    *ctx;
 852         int     prev_roaming;           /* roaming state to restore on deinit */
 853         int     prev_privacy;           /* privacy state to restore on deinit */
 854         int     prev_wpa;               /* wpa state to restore on deinit */
 855 };
 856
 857 static int
 858 set80211var(struct wpa_driver_bsd_data *drv, int op, const void *arg, int arg_len)
 859 {
 860         return bsd_set80211var(drv->sock, drv->ifname, op, arg, arg_len);
 861 }
 862
 863 static int
 864 get80211var(struct wpa_driver_bsd_data *drv, int op, void *arg, int arg_len)
 865 {
 866         return bsd_get80211var(drv->sock, drv->ifname, op, arg, arg_len);
 867 }
 868
 869 static int
 870 set80211param(struct wpa_driver_bsd_data *drv, int op, int arg)
 871 {
 872         return bsd_set80211param(drv->sock, drv->ifname, op, arg);
 873 }
 874
 875 static int
 876 get80211param(struct wpa_driver_bsd_data *drv, int op)
 877 {
 878         struct ieee80211req ireq;
 879
 880         os_memset(&ireq, 0, sizeof(ireq));
 881         os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
 882         ireq.i_type = op;
 883
 884         if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
 885                 fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n",
 886                         op, strerror(errno));
 887                 return -1;
 888         }
 889         return ireq.i_val;
 890 }
 891
 892 static int
 893 getifflags(struct wpa_driver_bsd_data *drv, int *flags)
 894 {
 895         struct ifreq ifr;
 896
 897         os_memset(&ifr, 0, sizeof(ifr));
 898         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 899         if (ioctl(drv->sock, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
 900                 perror("SIOCGIFFLAGS");
 901                 return errno;
 902         }
 903         *flags = ifr.ifr_flags & 0xffff;
 904         return 0;
 905 }
 906
 907 static int
 908 setifflags(struct wpa_driver_bsd_data *drv, int flags)
 909 {
 910         struct ifreq ifr;
 911
 912         os_memset(&ifr, 0, sizeof(ifr));
 913         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 914         ifr.ifr_flags = flags & 0xffff;
 915         if (ioctl(drv->sock, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
 916                 perror("SIOCSIFFLAGS");
 917                 return errno;
 918         }
 919         return 0;
 920 }
 921
 922 static int
 923 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
 924 {
 925         struct wpa_driver_bsd_data *drv = priv;
 926 #ifdef SIOCG80211BSSID
 927         struct ieee80211_bssid bs;
 928
 929         os_strncpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
 930         if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
 931                 return -1;
 932         os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
 933         return 0;
 934 #else
 935         return get80211var(drv, IEEE80211_IOC_BSSID,
 936                 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
 937 #endif
 938 }
 939
 940 #if 0
 941 static int
 942 wpa_driver_bsd_set_bssid(void *priv, const char *bssid)
 943 {
 944         struct wpa_driver_bsd_data *drv = priv;
 945
 946         return set80211var(drv, IEEE80211_IOC_BSSID,
 947                 bssid, IEEE80211_ADDR_LEN);
 948 }
 949 #endif
 950
 951 static int
 952 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
 953 {
 954         struct wpa_driver_bsd_data *drv = priv;
 955
 956         return bsd_get_ssid(drv->sock, drv->ifname, ssid);
 957 }
 958
 959 static int
 960 wpa_driver_bsd_set_ssid(void *priv, const u8 *ssid,
 961                              size_t ssid_len)
 962 {
 963         struct wpa_driver_bsd_data *drv = priv;
 964
 965         return bsd_set_ssid(drv->sock, drv->ifname, ssid, ssid_len);
 966 }
 967
 968 static int
 969 wpa_driver_bsd_set_wpa_ie(struct wpa_driver_bsd_data *drv,
 970         const u8 *wpa_ie, size_t wpa_ie_len)
 971 {
 972         return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
 973 }
 974
 975 static int
 976 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
 977 {
 978         struct wpa_driver_bsd_data *drv = priv;
 979         int ret = 0;
 980
 981         wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
 982                 __FUNCTION__, wpa, privacy);
 983
 984         if (!wpa && wpa_driver_bsd_set_wpa_ie(drv, NULL, 0) < 0)
 985                 ret = -1;
 986         if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
 987                 ret = -1;
 988         if (set80211param(drv, IEEE80211_IOC_WPA, wpa) < 0)
 989                 ret = -1;
 990
 991         return ret;
 992 }
 993
 994 static int
 995 wpa_driver_bsd_set_wpa(void *priv, int enabled)
 996 {
 997         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
 998
 999         return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
1000 }
1001
1002 static int
1003 wpa_driver_bsd_del_key(struct wpa_driver_bsd_data *drv, int key_idx,
1004                        const unsigned char *addr)
1005 {
1006         struct ieee80211req_del_key wk;
1007
1008         os_memset(&wk, 0, sizeof(wk));
1009         if (addr != NULL &&
1010             bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) != 0) {
1011                 struct ether_addr ea;
1012
1013                 os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1014                 wpa_printf(MSG_DEBUG, "%s: addr=%s keyidx=%d",
1015                         __func__, ether_ntoa(&ea), key_idx);
1016                 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
1017                 wk.idk_keyix = (uint8_t) IEEE80211_KEYIX_NONE;
1018         } else {
1019                 wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __func__, key_idx);
1020                 wk.idk_keyix = key_idx;
1021         }
1022         return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
1023 }
1024
1025 static int
1026 wpa_driver_bsd_set_key(const char *ifname, void *priv, wpa_alg alg,
1027                        const unsigned char *addr, int key_idx, int set_tx,
1028                        const u8 *seq, size_t seq_len,
1029                        const u8 *key, size_t key_len)
1030 {
1031         struct wpa_driver_bsd_data *drv = priv;
1032         struct ieee80211req_key wk;
1033         struct ether_addr ea;
1034         char *alg_name;
1035         u_int8_t cipher;
1036
1037         if (alg == WPA_ALG_NONE)
1038                 return wpa_driver_bsd_del_key(drv, key_idx, addr);
1039
1040         switch (alg) {
1041         case WPA_ALG_WEP:
1042                 alg_name = "WEP";
1043                 cipher = IEEE80211_CIPHER_WEP;
1044                 break;
1045         case WPA_ALG_TKIP:
1046                 alg_name = "TKIP";
1047                 cipher = IEEE80211_CIPHER_TKIP;
1048                 break;
1049         case WPA_ALG_CCMP:
1050                 alg_name = "CCMP";
1051                 cipher = IEEE80211_CIPHER_AES_CCM;
1052                 break;
1053         default:
1054                 wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
1055                         __func__, alg);
1056                 return -1;
1057         }
1058
1059         os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1060         wpa_printf(MSG_DEBUG,
1061                 "%s: alg=%s addr=%s key_idx=%d set_tx=%d seq_len=%zu key_len=%zu",
1062                 __func__, alg_name, ether_ntoa(&ea), key_idx, set_tx,
1063                 seq_len, key_len);
1064
1065         if (seq_len > sizeof(u_int64_t)) {
1066                 wpa_printf(MSG_DEBUG, "%s: seq_len %zu too big",
1067                         __func__, seq_len);
1068                 return -2;
1069         }
1070         if (key_len > sizeof(wk.ik_keydata)) {
1071                 wpa_printf(MSG_DEBUG, "%s: key length %zu too big",
1072                         __func__, key_len);
1073                 return -3;
1074         }
1075
1076         os_memset(&wk, 0, sizeof(wk));
1077         wk.ik_type = cipher;
1078         wk.ik_flags = IEEE80211_KEY_RECV;
1079         if (set_tx)
1080                 wk.ik_flags |= IEEE80211_KEY_XMIT;
1081         os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
1082         /*
1083          * Deduce whether group/global or unicast key by checking
1084          * the address (yech).  Note also that we can only mark global
1085          * keys default; doing this for a unicast key is an error.
1086          */
1087         if (bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) == 0) {
1088                 wk.ik_flags |= IEEE80211_KEY_GROUP;
1089                 wk.ik_keyix = key_idx;
1090         } else {
1091                 wk.ik_keyix = (key_idx == 0 ? IEEE80211_KEYIX_NONE : key_idx);
1092         }
1093         if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
1094                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
1095         wk.ik_keylen = key_len;
1096         os_memcpy(&wk.ik_keyrsc, seq, seq_len);
1097         os_memcpy(wk.ik_keydata, key, key_len);
1098
1099         return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
1100 }
1101
1102 static int
1103 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
1104 {
1105         struct wpa_driver_bsd_data *drv = priv;
1106
1107         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1108         return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
1109 }
1110
1111
1112 static int
1113 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
1114 {
1115         struct wpa_driver_bsd_data *drv = priv;
1116
1117         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1118         return set80211param(drv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
1119 }
1120
1121 static int
1122 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
1123 {
1124         struct wpa_driver_bsd_data *drv = priv;
1125         struct ieee80211req_mlme mlme;
1126
1127         wpa_printf(MSG_DEBUG, "%s", __func__);
1128         os_memset(&mlme, 0, sizeof(mlme));
1129         mlme.im_op = IEEE80211_MLME_DEAUTH;
1130         mlme.im_reason = reason_code;
1131         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1132         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1133 }
1134
1135 static int
1136 wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
1137 {
1138         struct wpa_driver_bsd_data *drv = priv;
1139         struct ieee80211req_mlme mlme;
1140
1141         wpa_printf(MSG_DEBUG, "%s", __func__);
1142         os_memset(&mlme, 0, sizeof(mlme));
1143         mlme.im_op = IEEE80211_MLME_DISASSOC;
1144         mlme.im_reason = reason_code;
1145         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1146         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1147 }
1148
1149 static int
1150 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
1151 {
1152         struct wpa_driver_bsd_data *drv = priv;
1153         struct ieee80211req_mlme mlme;
1154         int privacy;
1155         int ret = 0;
1156
1157         wpa_printf(MSG_DEBUG,
1158                 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1159                 , __func__
1160                    , (unsigned int) params->ssid_len, params->ssid
1161                 , (unsigned int) params->wpa_ie_len
1162                 , params->pairwise_suite
1163                 , params->group_suite
1164                 , params->key_mgmt_suite
1165         );
1166
1167         if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1168             < 0)
1169                 ret = -1;
1170         if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1171                 ret = -1;
1172         /* XXX error handling is wrong but unclear what to do... */
1173         if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1174                 return -1;
1175
1176         privacy = !(params->pairwise_suite == CIPHER_NONE &&
1177             params->group_suite == CIPHER_NONE &&
1178             params->key_mgmt_suite == KEY_MGMT_NONE &&
1179             params->wpa_ie_len == 0);
1180         wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1181
1182         if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1183                 return -1;
1184
1185         if (params->wpa_ie_len &&
1186             set80211param(drv, IEEE80211_IOC_WPA,
1187                           params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1188                 return -1;
1189
1190         os_memset(&mlme, 0, sizeof(mlme));
1191         mlme.im_op = IEEE80211_MLME_ASSOC;
1192         if (params->ssid != NULL)
1193                 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1194         mlme.im_ssid_len = params->ssid_len;
1195         if (params->bssid != NULL)
1196                 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1197         if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1198                 return -1;
1199         return ret;
1200 }
1201
1202 static int
1203 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
1204 {
1205         struct wpa_driver_bsd_data *drv = priv;
1206         int authmode;
1207
1208         if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
1209             (auth_alg & AUTH_ALG_SHARED_KEY))
1210                 authmode = IEEE80211_AUTH_AUTO;
1211         else if (auth_alg & AUTH_ALG_SHARED_KEY)
1212                 authmode = IEEE80211_AUTH_SHARED;
1213         else
1214                 authmode = IEEE80211_AUTH_OPEN;
1215
1216         return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
1217 }
1218
1219 static int
1220 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
1221 {
1222         struct wpa_driver_bsd_data *drv = priv;
1223         int flags;
1224         const u8 *ssid = params->ssids[0].ssid;
1225         size_t ssid_len = params->ssids[0].ssid_len;
1226
1227         /* NB: interface must be marked UP to do a scan */
1228         if (getifflags(drv, &flags) != 0 || setifflags(drv, flags | IFF_UP) != 0)
1229                 return -1;
1230
1231         /* set desired ssid before scan */
1232         if (wpa_driver_bsd_set_ssid(drv, ssid, ssid_len) < 0)
1233                 return -1;
1234
1235         /* NB: net80211 delivers a scan complete event so no need to poll */
1236         return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1237 }
1238
1239 static void
1240 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1241 {
1242         struct wpa_driver_bsd_data *drv = sock_ctx;
1243         char buf[2048];
1244         struct if_announcemsghdr *ifan;
1245         struct if_msghdr *ifm;
1246         struct rt_msghdr *rtm;
1247         union wpa_event_data event;
1248         struct ieee80211_michael_event *mic;
1249         int n;
1250
1251         n = read(sock, buf, sizeof(buf));
1252         if (n < 0) {
1253                 if (errno != EINTR && errno != EAGAIN)
1254                         perror("read(PF_ROUTE)");
1255                 return;
1256         }
1257
1258         rtm = (struct rt_msghdr *) buf;
1259         if (rtm->rtm_version != RTM_VERSION) {
1260                 wpa_printf(MSG_DEBUG, "Routing message version %d not "
1261                         "understood\n", rtm->rtm_version);
1262                 return;
1263         }
1264         os_memset(&event, 0, sizeof(event));
1265         switch (rtm->rtm_type) {
1266         case RTM_IFANNOUNCE:
1267                 ifan = (struct if_announcemsghdr *) rtm;
1268                 if (ifan->ifan_index != drv->ifindex)
1269                         break;
1270                 strlcpy(event.interface_status.ifname, drv->ifname,
1271                         sizeof(event.interface_status.ifname));
1272                 switch (ifan->ifan_what) {
1273                 case IFAN_DEPARTURE:
1274                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1275                 default:
1276                         return;
1277                 }
1278                 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1279                            event.interface_status.ifname,
1280                            ifan->ifan_what == IFAN_DEPARTURE ?
1281                                 "removed" : "added");
1282                 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1283                 break;
1284         case RTM_IEEE80211:
1285                 ifan = (struct if_announcemsghdr *) rtm;
1286                 if (ifan->ifan_index != drv->ifindex)
1287                         break;
1288                 switch (ifan->ifan_what) {
1289                 case RTM_IEEE80211_ASSOC:
1290                 case RTM_IEEE80211_REASSOC:
1291                         wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1292                         break;
1293                 case RTM_IEEE80211_DISASSOC:
1294                         wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1295                         break;
1296                 case RTM_IEEE80211_SCAN:
1297                         wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1298                         break;
1299                 case RTM_IEEE80211_REPLAY:
1300                         /* ignore */
1301                         break;
1302                 case RTM_IEEE80211_MICHAEL:
1303                         mic = (struct ieee80211_michael_event *) &ifan[1];
1304                         wpa_printf(MSG_DEBUG,
1305                                 "Michael MIC failure wireless event: "
1306                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1307                                 MAC2STR(mic->iev_src));
1308
1309                         os_memset(&event, 0, sizeof(event));
1310                         event.michael_mic_failure.unicast =
1311                                 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1312                         wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1313                                 &event);
1314                         break;
1315                 }
1316                 break;
1317         case RTM_IFINFO:
1318                 ifm = (struct if_msghdr *) rtm;
1319                 if (ifm->ifm_index != drv->ifindex)
1320                         break;
1321                 if ((rtm->rtm_flags & RTF_UP) == 0) {
1322                         strlcpy(event.interface_status.ifname, drv->ifname,
1323                                 sizeof(event.interface_status.ifname));
1324                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1325                         wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1326                                    event.interface_status.ifname);
1327                         wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1328                 }
1329                 break;
1330         }
1331 }
1332
1333 static void
1334 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1335                               struct ieee80211req_scan_result *sr)
1336 {
1337         struct wpa_scan_res *result, **tmp;
1338         size_t extra_len;
1339         u8 *pos;
1340
1341         extra_len = 2 + sr->isr_ssid_len;
1342         extra_len += 2 + sr->isr_nrates;
1343         extra_len += 3; /* ERP IE */
1344         extra_len += sr->isr_ie_len;
1345
1346         result = os_zalloc(sizeof(*result) + extra_len);
1347         if (result == NULL)
1348                 return;
1349         os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1350         result->freq = sr->isr_freq;
1351         result->beacon_int = sr->isr_intval;
1352         result->caps = sr->isr_capinfo;
1353         result->qual = sr->isr_rssi;
1354         result->noise = sr->isr_noise;
1355
1356         pos = (u8 *)(result + 1);
1357
1358         *pos++ = WLAN_EID_SSID;
1359         *pos++ = sr->isr_ssid_len;
1360         os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1361         pos += sr->isr_ssid_len;
1362
1363         /*
1364          * Deal all rates as supported rate.
1365          * Because net80211 doesn't report extended supported rate or not.
1366          */
1367         *pos++ = WLAN_EID_SUPP_RATES;
1368         *pos++ = sr->isr_nrates;
1369         os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1370         pos += sr->isr_nrates;
1371
1372         *pos++ = WLAN_EID_ERP_INFO;
1373         *pos++ = 1;
1374         *pos++ = sr->isr_erp;
1375
1376         os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1377         pos += sr->isr_ie_len;
1378
1379         result->ie_len = pos - (u8 *)(result + 1);
1380
1381         tmp = os_realloc(res->res,
1382                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1383         if (tmp == NULL) {
1384                 os_free(result);
1385                 return;
1386         }
1387         tmp[res->num++] = result;
1388         res->res = tmp;
1389 }
1390
1391 struct wpa_scan_results *
1392 wpa_driver_bsd_get_scan_results2(void *priv)
1393 {
1394         struct wpa_driver_bsd_data *drv = priv;
1395         struct ieee80211req_scan_result *sr;
1396         struct wpa_scan_results *res;
1397         int len, rest;
1398         uint8_t buf[24*1024], *pos;
1399
1400         len = get80211var(drv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1401         if (len < 0)
1402                 return NULL;
1403
1404         res = os_zalloc(sizeof(*res));
1405         if (res == NULL)
1406                 return NULL;
1407
1408         pos = buf;
1409         rest = len;
1410         while (rest >= sizeof(struct ieee80211req_scan_result)) {
1411                 sr = (struct ieee80211req_scan_result *)pos;
1412                 wpa_driver_bsd_add_scan_entry(res, sr);
1413                 pos += sr->isr_len;
1414                 rest -= sr->isr_len;
1415         }
1416
1417         wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1418                    len, (unsigned long)res->num);
1419
1420         return res;
1421 }
1422
1423 static void *
1424 wpa_driver_bsd_init(void *ctx, const char *ifname)
1425 {
1426 #define GETPARAM(drv, param, v) \
1427         (((v) = get80211param(drv, param)) != -1)
1428         struct wpa_driver_bsd_data *drv;
1429
1430         drv = os_zalloc(sizeof(*drv));
1431         if (drv == NULL)
1432                 return NULL;
1433         /*
1434          * NB: We require the interface name be mappable to an index.
1435          *     This implies we do not support having wpa_supplicant
1436          *     wait for an interface to appear.  This seems ok; that
1437          *     doesn't belong here; it's really the job of devd.
1438          */
1439         drv->ifindex = if_nametoindex(ifname);
1440         if (drv->ifindex == 0) {
1441                 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1442                            __func__, ifname);
1443                 goto fail1;
1444         }
1445         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1446         if (drv->sock < 0)
1447                 goto fail1;
1448         drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1449         if (drv->route < 0)
1450                 goto fail;
1451         eloop_register_read_sock(drv->route,
1452                 wpa_driver_bsd_event_receive, ctx, drv);
1453
1454         drv->ctx = ctx;
1455         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1456
1457         if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1458                 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1459                         __func__, strerror(errno));
1460                 goto fail;
1461         }
1462         if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1463                 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1464                         __func__, strerror(errno));
1465                 goto fail;
1466         }
1467         if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1468                 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1469                         __func__, strerror(errno));
1470                 goto fail;
1471         }
1472         if (set80211param(drv, IEEE80211_IOC_ROAMING, IEEE80211_ROAMING_MANUAL) < 0) {
1473                 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
1474                            "roaming: %s", __func__, strerror(errno));
1475                 goto fail;
1476         }
1477
1478         if (set80211param(drv, IEEE80211_IOC_WPA, 1+2) < 0) {
1479                 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support %s",
1480                            __func__, strerror(errno));
1481                 goto fail;
1482         }
1483
1484         wpa_driver_bsd_set_wpa(drv, 1);
1485
1486         return drv;
1487 fail:
1488         close(drv->sock);
1489 fail1:
1490         os_free(drv);
1491         return NULL;
1492 #undef GETPARAM
1493 }
1494
1495 static void
1496 wpa_driver_bsd_deinit(void *priv)
1497 {
1498         struct wpa_driver_bsd_data *drv = priv;
1499         int flags;
1500
1501         wpa_driver_bsd_set_wpa(drv, 0);
1502         eloop_unregister_read_sock(drv->route);
1503
1504         /* NB: mark interface down */
1505         if (getifflags(drv, &flags) == 0)
1506                 (void) setifflags(drv, flags &~ IFF_UP);
1507
1508         wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1509         if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1510                 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1511                         __func__);
1512
1513         (void) close(drv->route);               /* ioctl socket */
1514         (void) close(drv->sock);                /* event socket */
1515         os_free(drv);
1516 }
1517
1518
1519 const struct wpa_driver_ops wpa_driver_bsd_ops = {
1520         .name                   = "bsd",
1521         .desc                   = "BSD 802.11 support",
1522         .init                   = wpa_driver_bsd_init,
1523         .deinit                 = wpa_driver_bsd_deinit,
1524         .get_bssid              = wpa_driver_bsd_get_bssid,
1525         .get_ssid               = wpa_driver_bsd_get_ssid,
1526         .set_key                = wpa_driver_bsd_set_key,
1527         .set_countermeasures    = wpa_driver_bsd_set_countermeasures,
1528         .scan2                  = wpa_driver_bsd_scan,
1529         .get_scan_results2      = wpa_driver_bsd_get_scan_results2,
1530         .deauthenticate         = wpa_driver_bsd_deauthenticate,
1531         .disassociate           = wpa_driver_bsd_disassociate,
1532         .associate              = wpa_driver_bsd_associate,
1533 };
1534
1535 #endif /* HOSTAPD */