src/drivers/driver_bsd.c

   1 /*
   2  * WPA Supplicant - driver interaction with BSD net80211 layer
   3  * Copyright (c) 2004, Sam Leffler <sam@errno.com>
   4  * Copyright (c) 2004, 2Wire, Inc
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Alternatively, this software may be distributed under the terms of BSD
  11  * license.
  12  *
  13  * See README and COPYING for more details.
  14  */
  15
  16 #include "includes.h"
  17 #include <sys/ioctl.h>
  18
  19 #include "common.h"
  20 #include "driver.h"
  21 #include "eloop.h"
  22 #include "common/ieee802_11_defs.h"
  23
  24 #include <net/if.h>
  25 #include <net/if_media.h>
  26
  27 #ifdef __NetBSD__
  28 #include <net/if_ether.h>
  29 #else
  30 #include <net/ethernet.h>
  31 #endif
  32 #include <net/route.h>
  33
  34 #ifdef __DragonFly__
  35 #include <netproto/802_11/ieee80211_ioctl.h>
  36 #include <netproto/802_11/ieee80211_dragonfly.h>
  37 #else /* __DragonFly__ */
  38 #include <net80211/ieee80211.h>
  39 #include <net80211/ieee80211_ioctl.h>
  40 #include <net80211/ieee80211_crypto.h>
  41 #endif /* __DragonFly__ */
  42 #if __FreeBSD__
  43 #include <net80211/ieee80211_freebsd.h>
  44 #endif
  45 #if __NetBSD__
  46 #include <net80211/ieee80211_netbsd.h>
  47 #endif
  48
  49 /* Generic functions for hostapd and wpa_supplicant */
  50
  51 static int
  52 bsd_set80211var(int s, const char *ifname, int op, const void *arg, int arg_len)
  53 {
  54         struct ieee80211req ireq;
  55
  56         os_memset(&ireq, 0, sizeof(ireq));
  57         os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
  58         ireq.i_type = op;
  59         ireq.i_len = arg_len;
  60         ireq.i_data = (void *) arg;
  61
  62         if (ioctl(s, SIOCS80211, &ireq) < 0) {
  63                 fprintf(stderr, "ioctl[SIOCS80211, op %u, len %u]: %s\n",
  64                         op, arg_len, strerror(errno));
  65                 return -1;
  66         }
  67         return 0;
  68 }
  69
  70 static int
  71 bsd_get80211var(int s, const char *ifname, int op, void *arg, int arg_len)
  72 {
  73         struct ieee80211req ireq;
  74
  75         os_memset(&ireq, 0, sizeof(ireq));
  76         os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
  77         ireq.i_type = op;
  78         ireq.i_len = arg_len;
  79         ireq.i_data = arg;
  80
  81         if (ioctl(s, SIOCG80211, &ireq) < 0) {
  82                 fprintf(stderr, "ioctl[SIOCG80211, op %u, len %u]: %s\n",
  83                         op, arg_len, strerror(errno));
  84                 return -1;
  85         }
  86         return ireq.i_len;
  87 }
  88
  89 static int
  90 bsd_set80211param(int s, const char *ifname, int op, int arg)
  91 {
  92         struct ieee80211req ireq;
  93
  94         os_memset(&ireq, 0, sizeof(ireq));
  95         os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
  96         ireq.i_type = op;
  97         ireq.i_val = arg;
  98
  99         if (ioctl(s, SIOCS80211, &ireq) < 0) {
 100                 fprintf(stderr, "ioctl[SIOCS80211, op %u, arg 0x%x]: %s\n",
 101                         op, arg, strerror(errno));
 102                 return -1;
 103         }
 104         return 0;
 105 }
 106
 107 static int
 108 bsd_get_ssid(int s, const char *ifname, u8 *ssid)
 109 {
 110 #ifdef SIOCG80211NWID
 111         struct ieee80211_nwid nwid;
 112         struct ifreq ifr;
 113
 114         os_memset(&ifr, 0, sizeof(ifr));
 115         os_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
 116         ifr.ifr_data = (void *)&nwid;
 117         if (ioctl(s, SIOCG80211NWID, &ifr) < 0 ||
 118             nwid.i_len > IEEE80211_NWID_LEN)
 119                 return -1;
 120         os_memcpy(ssid, nwid.i_nwid, nwid.i_len);
 121         return nwid.i_len;
 122 #else
 123         return bsd_get80211var(s, ifname, IEEE80211_IOC_SSID,
 124                 ssid, IEEE80211_NWID_LEN);
 125 #endif
 126 }
 127
 128 static int
 129 bsd_set_ssid(int s, const char *ifname, const u8 *ssid, size_t ssid_len)
 130 {
 131 #ifdef SIOCS80211NWID
 132         struct ieee80211_nwid nwid;
 133         struct ifreq ifr;
 134
 135         os_memcpy(nwid.i_nwid, ssid, ssid_len);
 136         nwid.i_len = ssid_len;
 137         os_memset(&ifr, 0, sizeof(ifr));
 138         os_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
 139         ifr.ifr_data = (void *)&nwid;
 140         return ioctl(s, SIOCS80211NWID, &ifr);
 141 #else
 142         return bsd_set80211var(s, ifname, IEEE80211_IOC_SSID, ssid, ssid_len);
 143 #endif
 144 }
 145
 146 static int
 147 bsd_get_if_media(int s, const char *ifname)
 148 {
 149         struct ifmediareq ifmr;
 150
 151         os_memset(&ifmr, 0, sizeof(ifmr));
 152         os_strlcpy(ifmr.ifm_name, ifname, sizeof(ifmr.ifm_name));
 153
 154         if (ioctl(s, SIOCGIFMEDIA, &ifmr) < 0) {
 155                 wpa_printf(MSG_ERROR, "%s: SIOCGIFMEDIA %s", __func__,
 156                            strerror(errno));
 157                 return -1;
 158         }
 159
 160         return ifmr.ifm_current;
 161 }
 162
 163 static int
 164 bsd_set_if_media(int s, const char *ifname, int media)
 165 {
 166         struct ifreq ifr;
 167
 168         os_memset(&ifr, 0, sizeof(ifr));
 169         os_strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
 170         ifr.ifr_media = media;
 171
 172         if (ioctl(s, SIOCSIFMEDIA, &ifr) < 0) {
 173                 wpa_printf(MSG_ERROR, "%s: SIOCSIFMEDIA %s", __func__,
 174                            strerror(errno));
 175                 return -1;
 176         }
 177
 178         return 0;
 179 }
 180
 181 static int
 182 bsd_set_mediaopt(int s, const char *ifname, uint32_t mask, uint32_t mode)
 183 {
 184         int media = bsd_get_if_media(s, ifname);
 185
 186         if (media < 0)
 187                 return -1;
 188         media &= ~mask;
 189         media |= mode;
 190         if (bsd_set_if_media(s, ifname, media) < 0)
 191                 return -1;
 192         return 0;
 193 }
 194
 195 static int
 196 bsd_del_key(int s, const char *ifname, const u8 *addr, int key_idx)
 197 {
 198         struct ieee80211req_del_key wk;
 199
 200         os_memset(&wk, 0, sizeof(wk));
 201         if (addr == NULL) {
 202                 wpa_printf(MSG_DEBUG, "%s: key_idx=%d", __func__, key_idx);
 203                 wk.idk_keyix = key_idx;
 204         } else {
 205                 wpa_printf(MSG_DEBUG, "%s: addr=" MACSTR, __func__,
 206                            MAC2STR(addr));
 207                 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 208                 wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */
 209         }
 210
 211         return bsd_set80211var(s, ifname, IEEE80211_IOC_DELKEY, &wk,
 212                                sizeof(wk));
 213 }
 214
 215
 216 #ifdef HOSTAPD
 217
 218 /*
 219  * Avoid conflicts with hostapd definitions by undefining couple of defines
 220  * from net80211 header files.
 221  */
 222 #undef RSN_VERSION
 223 #undef WPA_VERSION
 224 #undef WPA_OUI_TYPE
 225
 226 #include "l2_packet/l2_packet.h"
 227
 228 struct bsd_driver_data {
 229         struct hostapd_data *hapd;              /* back pointer */
 230
 231         char    iface[IFNAMSIZ + 1];
 232         struct l2_packet_data *sock_xmit;       /* raw packet xmit socket */
 233         int     ioctl_sock;                     /* socket for ioctl() use */
 234         int     wext_sock;                      /* socket for wireless events */
 235 };
 236
 237 static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
 238                           int reason_code);
 239
 240 static int
 241 set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
 242 {
 243         return bsd_set80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
 244 }
 245
 246 static int
 247 get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
 248 {
 249         return bsd_get80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
 250 }
 251
 252 static int
 253 set80211param(struct bsd_driver_data *drv, int op, int arg)
 254 {
 255         return bsd_set80211param(drv->ioctl_sock, drv->iface, op, arg);
 256 }
 257
 258 static const char *
 259 ether_sprintf(const u8 *addr)
 260 {
 261         static char buf[sizeof(MACSTR)];
 262
 263         if (addr != NULL)
 264                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 265         else
 266                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 267         return buf;
 268 }
 269
 270 /*
 271  * Configure WPA parameters.
 272  */
 273 static int
 274 bsd_configure_wpa(struct bsd_driver_data *drv, struct wpa_bss_params *params)
 275 {
 276         static const char *ciphernames[] =
 277                 { "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
 278         int v;
 279
 280         switch (params->wpa_group) {
 281         case WPA_CIPHER_CCMP:
 282                 v = IEEE80211_CIPHER_AES_CCM;
 283                 break;
 284         case WPA_CIPHER_TKIP:
 285                 v = IEEE80211_CIPHER_TKIP;
 286                 break;
 287         case WPA_CIPHER_WEP104:
 288                 v = IEEE80211_CIPHER_WEP;
 289                 break;
 290         case WPA_CIPHER_WEP40:
 291                 v = IEEE80211_CIPHER_WEP;
 292                 break;
 293         case WPA_CIPHER_NONE:
 294                 v = IEEE80211_CIPHER_NONE;
 295                 break;
 296         default:
 297                 printf("Unknown group key cipher %u\n",
 298                         params->wpa_group);
 299                 return -1;
 300         }
 301         wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
 302                    __func__, ciphernames[v], v);
 303         if (set80211param(drv, IEEE80211_IOC_MCASTCIPHER, v)) {
 304                 printf("Unable to set group key cipher to %u (%s)\n",
 305                         v, ciphernames[v]);
 306                 return -1;
 307         }
 308         if (v == IEEE80211_CIPHER_WEP) {
 309                 /* key length is done only for specific ciphers */
 310                 v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 311                 if (set80211param(drv, IEEE80211_IOC_MCASTKEYLEN, v)) {
 312                         printf("Unable to set group key length to %u\n", v);
 313                         return -1;
 314                 }
 315         }
 316
 317         v = 0;
 318         if (params->wpa_pairwise & WPA_CIPHER_CCMP)
 319                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 320         if (params->wpa_pairwise & WPA_CIPHER_TKIP)
 321                 v |= 1<<IEEE80211_CIPHER_TKIP;
 322         if (params->wpa_pairwise & WPA_CIPHER_NONE)
 323                 v |= 1<<IEEE80211_CIPHER_NONE;
 324         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 325         if (set80211param(drv, IEEE80211_IOC_UCASTCIPHERS, v)) {
 326                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 327                 return -1;
 328         }
 329
 330         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 331                    __func__, params->wpa_key_mgmt);
 332         if (set80211param(drv, IEEE80211_IOC_KEYMGTALGS, params->wpa_key_mgmt))
 333         {
 334                 printf("Unable to set key management algorithms to 0x%x\n",
 335                         params->wpa_key_mgmt);
 336                 return -1;
 337         }
 338
 339         v = 0;
 340         if (params->rsn_preauth)
 341                 v |= BIT(0);
 342         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 343                    __func__, params->rsn_preauth);
 344         if (set80211param(drv, IEEE80211_IOC_RSNCAPS, v)) {
 345                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 346                 return -1;
 347         }
 348
 349         wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, params->wpa);
 350         if (set80211param(drv, IEEE80211_IOC_WPA, params->wpa)) {
 351                 printf("Unable to set WPA to %u\n", params->wpa);
 352                 return -1;
 353         }
 354         return 0;
 355 }
 356
 357
 358 static int
 359 bsd_set_iface_flags(void *priv, int dev_up)
 360 {
 361         struct bsd_driver_data *drv = priv;
 362         struct ifreq ifr;
 363
 364         wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
 365
 366         if (drv->ioctl_sock < 0)
 367                 return -1;
 368
 369         memset(&ifr, 0, sizeof(ifr));
 370         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
 371
 372         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 373                 perror("ioctl[SIOCGIFFLAGS]");
 374                 return -1;
 375         }
 376
 377         if (dev_up)
 378                 ifr.ifr_flags |= IFF_UP;
 379         else
 380                 ifr.ifr_flags &= ~IFF_UP;
 381
 382         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 383                 perror("ioctl[SIOCSIFFLAGS]");
 384                 return -1;
 385         }
 386
 387         return 0;
 388 }
 389
 390 static int
 391 bsd_set_ieee8021x(void *priv, struct wpa_bss_params *params)
 392 {
 393         struct bsd_driver_data *drv = priv;
 394
 395         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);
 396
 397         if (!params->enabled) {
 398                 /* XXX restore state */
 399                 return set80211param(priv, IEEE80211_IOC_AUTHMODE,
 400                         IEEE80211_AUTH_AUTO);
 401         }
 402         if (!params->wpa && !params->ieee802_1x) {
 403                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 404                         HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
 405                 return -1;
 406         }
 407         if (params->wpa && bsd_configure_wpa(drv, params) != 0) {
 408                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 409                         HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
 410                 return -1;
 411         }
 412         if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
 413                 (params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 414                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 415                         HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
 416                 return -1;
 417         }
 418         return bsd_set_iface_flags(priv, 1);
 419 }
 420
 421 static int
 422 bsd_set_privacy(const char *ifname, void *priv, int enabled)
 423 {
 424         struct bsd_driver_data *drv = priv;
 425
 426         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 427
 428         return set80211param(drv, IEEE80211_IOC_PRIVACY, enabled);
 429 }
 430
 431 static int
 432 bsd_set_sta_authorized(void *priv, const u8 *addr, int authorized)
 433 {
 434         struct bsd_driver_data *drv = priv;
 435         struct ieee80211req_mlme mlme;
 436
 437         wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
 438                    __func__, ether_sprintf(addr), authorized);
 439
 440         if (authorized)
 441                 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
 442         else
 443                 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
 444         mlme.im_reason = 0;
 445         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 446         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
 447 }
 448
 449 static int
 450 bsd_sta_set_flags(void *priv, const u8 *addr, int total_flags, int flags_or,
 451                   int flags_and)
 452 {
 453         /* For now, only support setting Authorized flag */
 454         if (flags_or & WPA_STA_AUTHORIZED)
 455                 return bsd_set_sta_authorized(priv, addr, 1);
 456         if (!(flags_and & WPA_STA_AUTHORIZED))
 457                 return bsd_set_sta_authorized(priv, addr, 0);
 458         return 0;
 459 }
 460
 461 static int
 462 bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
 463             const u8 *addr, int key_idx, int set_tx, const u8 *seq,
 464             size_t seq_len, const u8 *key, size_t key_len)
 465 {
 466         struct bsd_driver_data *drv = priv;
 467         struct ieee80211req_key wk;
 468         u_int8_t cipher;
 469
 470         if (alg == WPA_ALG_NONE)
 471                 return bsd_del_key(drv->ioctl_sock, drv->iface, addr, key_idx);
 472
 473         wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
 474                    __func__, alg, ether_sprintf(addr), key_idx);
 475
 476         if (alg == WPA_ALG_WEP)
 477                 cipher = IEEE80211_CIPHER_WEP;
 478         else if (alg == WPA_ALG_TKIP)
 479                 cipher = IEEE80211_CIPHER_TKIP;
 480         else if (alg == WPA_ALG_CCMP)
 481                 cipher = IEEE80211_CIPHER_AES_CCM;
 482         else {
 483                 printf("%s: unknown/unsupported algorithm %d\n",
 484                         __func__, alg);
 485                 return -1;
 486         }
 487
 488         if (key_len > sizeof(wk.ik_keydata)) {
 489                 printf("%s: key length %d too big\n", __func__, (int) key_len);
 490                 return -3;
 491         }
 492
 493         memset(&wk, 0, sizeof(wk));
 494         wk.ik_type = cipher;
 495         wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
 496         if (addr == NULL) {
 497                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 498                 wk.ik_keyix = key_idx;
 499                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 500         } else {
 501                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 502                 wk.ik_keyix = IEEE80211_KEYIX_NONE;
 503         }
 504         wk.ik_keylen = key_len;
 505         memcpy(wk.ik_keydata, key, key_len);
 506
 507         return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
 508 }
 509
 510
 511 static int
 512 bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 513                u8 *seq)
 514 {
 515         struct bsd_driver_data *drv = priv;
 516         struct ieee80211req_key wk;
 517
 518         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 519                    __func__, ether_sprintf(addr), idx);
 520
 521         memset(&wk, 0, sizeof(wk));
 522         if (addr == NULL)
 523                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 524         else
 525                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 526         wk.ik_keyix = idx;
 527
 528         if (get80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
 529                 printf("Failed to get encryption.\n");
 530                 return -1;
 531         }
 532
 533 #ifdef WORDS_BIGENDIAN
 534         {
 535                 /*
 536                  * wk.ik_keytsc is in host byte order (big endian), need to
 537                  * swap it to match with the byte order used in WPA.
 538                  */
 539                 int i;
 540                 u8 tmp[WPA_KEY_RSC_LEN];
 541                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 542                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 543                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 544                 }
 545         }
 546 #else /* WORDS_BIGENDIAN */
 547         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 548 #endif /* WORDS_BIGENDIAN */
 549         return 0;
 550 }
 551
 552
 553 static int
 554 bsd_flush(void *priv)
 555 {
 556         u8 allsta[IEEE80211_ADDR_LEN];
 557
 558         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 559         return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
 560 }
 561
 562
 563 static int
 564 bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 565                          const u8 *addr)
 566 {
 567         struct bsd_driver_data *drv = priv;
 568         struct ieee80211req_sta_stats stats;
 569
 570         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 571         if (get80211var(drv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats)) > 0) {
 572                 /* XXX? do packets counts include non-data frames? */
 573                 data->rx_packets = stats.is_stats.ns_rx_data;
 574                 data->rx_bytes = stats.is_stats.ns_rx_bytes;
 575                 data->tx_packets = stats.is_stats.ns_tx_data;
 576                 data->tx_bytes = stats.is_stats.ns_tx_bytes;
 577         }
 578         return 0;
 579 }
 580
 581 static int
 582 bsd_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
 583 {
 584         /*
 585          * Do nothing; we setup parameters at startup that define the
 586          * contents of the beacon information element.
 587          */
 588         return 0;
 589 }
 590
 591 static int
 592 bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
 593 {
 594         struct bsd_driver_data *drv = priv;
 595         struct ieee80211req_mlme mlme;
 596
 597         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 598                    __func__, ether_sprintf(addr), reason_code);
 599
 600         mlme.im_op = IEEE80211_MLME_DEAUTH;
 601         mlme.im_reason = reason_code;
 602         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 603         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
 604 }
 605
 606 static int
 607 bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
 608                  int reason_code)
 609 {
 610         struct bsd_driver_data *drv = priv;
 611         struct ieee80211req_mlme mlme;
 612
 613         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 614                    __func__, ether_sprintf(addr), reason_code);
 615
 616         mlme.im_op = IEEE80211_MLME_DISASSOC;
 617         mlme.im_reason = reason_code;
 618         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 619         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
 620 }
 621
 622 static void
 623 bsd_new_sta(struct bsd_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
 624 {
 625         struct hostapd_data *hapd = drv->hapd;
 626         struct ieee80211req_wpaie ie;
 627         int ielen = 0;
 628         u8 *iebuf = NULL;
 629
 630         /*
 631          * Fetch and validate any negotiated WPA/RSN parameters.
 632          */
 633         memset(&ie, 0, sizeof(ie));
 634         memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
 635         if (get80211var(drv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
 636                 printf("Failed to get WPA/RSN information element.\n");
 637                 goto no_ie;
 638         }
 639         iebuf = ie.wpa_ie;
 640         ielen = ie.wpa_ie[1];
 641         if (ielen == 0)
 642                 iebuf = NULL;
 643         else
 644                 ielen += 2;
 645
 646 no_ie:
 647         drv_event_assoc(hapd, addr, iebuf, ielen);
 648 }
 649
 650 static void
 651 bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
 652 {
 653         struct bsd_driver_data *drv = ctx;
 654         char buf[2048];
 655         struct if_announcemsghdr *ifan;
 656         struct rt_msghdr *rtm;
 657         struct ieee80211_michael_event *mic;
 658         struct ieee80211_join_event *join;
 659         struct ieee80211_leave_event *leave;
 660         int n;
 661         union wpa_event_data data;
 662
 663         n = read(sock, buf, sizeof(buf));
 664         if (n < 0) {
 665                 if (errno != EINTR && errno != EAGAIN)
 666                         perror("read(PF_ROUTE)");
 667                 return;
 668         }
 669
 670         rtm = (struct rt_msghdr *) buf;
 671         if (rtm->rtm_version != RTM_VERSION) {
 672                 wpa_printf(MSG_DEBUG, "Routing message version %d not "
 673                         "understood\n", rtm->rtm_version);
 674                 return;
 675         }
 676         ifan = (struct if_announcemsghdr *) rtm;
 677         switch (rtm->rtm_type) {
 678         case RTM_IEEE80211:
 679                 switch (ifan->ifan_what) {
 680                 case RTM_IEEE80211_ASSOC:
 681                 case RTM_IEEE80211_REASSOC:
 682                 case RTM_IEEE80211_DISASSOC:
 683                 case RTM_IEEE80211_SCAN:
 684                         break;
 685                 case RTM_IEEE80211_LEAVE:
 686                         leave = (struct ieee80211_leave_event *) &ifan[1];
 687                         drv_event_disassoc(drv->hapd, leave->iev_addr);
 688                         break;
 689                 case RTM_IEEE80211_JOIN:
 690 #ifdef RTM_IEEE80211_REJOIN
 691                 case RTM_IEEE80211_REJOIN:
 692 #endif
 693                         join = (struct ieee80211_join_event *) &ifan[1];
 694                         bsd_new_sta(drv, join->iev_addr);
 695                         break;
 696                 case RTM_IEEE80211_REPLAY:
 697                         /* ignore */
 698                         break;
 699                 case RTM_IEEE80211_MICHAEL:
 700                         mic = (struct ieee80211_michael_event *) &ifan[1];
 701                         wpa_printf(MSG_DEBUG,
 702                                 "Michael MIC failure wireless event: "
 703                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
 704                                 MAC2STR(mic->iev_src));
 705                         os_memset(&data, 0, sizeof(data));
 706                         data.michael_mic_failure.unicast = 1;
 707                         data.michael_mic_failure.src = mic->iev_src;
 708                         wpa_supplicant_event(drv->hapd,
 709                                              EVENT_MICHAEL_MIC_FAILURE, &data);
 710                         break;
 711                 }
 712                 break;
 713         }
 714 }
 715
 716 static int
 717 bsd_wireless_event_init(struct bsd_driver_data *drv)
 718 {
 719         int s;
 720
 721         drv->wext_sock = -1;
 722
 723         s = socket(PF_ROUTE, SOCK_RAW, 0);
 724         if (s < 0) {
 725                 perror("socket(PF_ROUTE,SOCK_RAW)");
 726                 return -1;
 727         }
 728         eloop_register_read_sock(s, bsd_wireless_event_receive, drv, NULL);
 729         drv->wext_sock = s;
 730
 731         return 0;
 732 }
 733
 734 static void
 735 bsd_wireless_event_deinit(struct bsd_driver_data *drv)
 736 {
 737         if (drv->wext_sock < 0)
 738                 return;
 739         eloop_unregister_read_sock(drv->wext_sock);
 740         close(drv->wext_sock);
 741 }
 742
 743
 744 static int
 745 bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
 746                int encrypt, const u8 *own_addr)
 747 {
 748         struct bsd_driver_data *drv = priv;
 749         unsigned char *bp;
 750         struct l2_ethhdr *eth;
 751         size_t len;
 752         int status;
 753
 754         /*
 755          * Prepend the Ethernet header.  If the caller left us
 756          * space at the front we could just insert it but since
 757          * we don't know we copy to a local buffer.  Given the frequency
 758          * and size of frames this probably doesn't matter.
 759          */
 760         len = data_len + sizeof(struct l2_ethhdr);
 761         bp = os_zalloc(len);
 762         if (bp == NULL) {
 763                 wpa_printf(MSG_ERROR, "malloc() failed for bsd_send_eapol"
 764                            "(len=%lu)", (unsigned long) len);
 765                 return -1;
 766         }
 767         eth = (struct l2_ethhdr *) bp;
 768         os_memcpy(eth->h_dest, addr, ETH_ALEN);
 769         os_memcpy(eth->h_source, own_addr, ETH_ALEN);
 770         eth->h_proto = htons(ETH_P_EAPOL);
 771         os_memcpy(eth + 1, data, data_len);
 772
 773         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
 774
 775         status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
 776
 777         os_free(bp);
 778         return status;
 779 }
 780
 781 static void
 782 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
 783 {
 784         struct bsd_driver_data *drv = ctx;
 785         drv_event_eapol_rx(drv->hapd, src_addr, buf + sizeof(struct l2_ethhdr),
 786                            len - sizeof(struct l2_ethhdr));
 787 }
 788
 789 static int
 790 hostapd_bsd_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
 791 {
 792         struct bsd_driver_data *drv = priv;
 793         int ssid_len;
 794
 795         ssid_len = bsd_get_ssid(drv->ioctl_sock, drv->iface, buf);
 796         wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, ssid_len, buf);
 797
 798         return ssid_len;
 799 }
 800
 801 static int
 802 hostapd_bsd_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
 803 {
 804         struct bsd_driver_data *drv = priv;
 805
 806         wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, len, buf);
 807
 808         return bsd_set_ssid(drv->ioctl_sock, drv->iface, buf, len);
 809 }
 810
 811 static int
 812 bsd_set_freq(void *priv, struct hostapd_freq_params *freq)
 813 {
 814         struct bsd_driver_data *drv = priv;
 815         struct ieee80211chanreq creq;
 816         uint32_t mode;
 817
 818         if (freq->channel < 14)
 819                 mode = IFM_IEEE80211_11G;
 820         else if (freq->channel == 14)
 821                 mode = IFM_IEEE80211_11B;
 822         else
 823                 mode = IFM_IEEE80211_11A;
 824         if (bsd_set_mediaopt(drv->ioctl_sock, drv->iface, IFM_MMASK,
 825                              mode) < 0) {
 826                 wpa_printf(MSG_ERROR, "%s: failed to set modulation mode",
 827                            __func__);
 828                 return -1;
 829         }
 830
 831         os_memset(&creq, 0, sizeof(creq));
 832         os_strlcpy(creq.i_name, drv->iface, sizeof(creq.i_name));
 833         creq.i_channel = freq->channel;
 834         return ioctl(drv->ioctl_sock, SIOCS80211CHANNEL, &creq);
 835 }
 836
 837 static void *
 838 bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
 839 {
 840         struct bsd_driver_data *drv;
 841
 842         drv = os_zalloc(sizeof(struct bsd_driver_data));
 843         if (drv == NULL) {
 844                 printf("Could not allocate memory for bsd driver data\n");
 845                 goto bad;
 846         }
 847
 848         drv->hapd = hapd;
 849         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
 850         if (drv->ioctl_sock < 0) {
 851                 perror("socket[PF_INET,SOCK_DGRAM]");
 852                 goto bad;
 853         }
 854         memcpy(drv->iface, params->ifname, sizeof(drv->iface));
 855
 856         drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
 857                                         handle_read, drv, 1);
 858         if (drv->sock_xmit == NULL)
 859                 goto bad;
 860         if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
 861                 goto bad;
 862
 863         bsd_set_iface_flags(drv, 0);    /* mark down during setup */
 864         if (bsd_wireless_event_init(drv))
 865                 goto bad;
 866
 867         if (bsd_set_mediaopt(drv->ioctl_sock, drv->iface, IFM_OMASK,
 868                              IFM_IEEE80211_HOSTAP) < 0) {
 869                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
 870                            __func__);
 871                 goto bad;
 872         }
 873
 874         return drv;
 875 bad:
 876         if (drv->sock_xmit != NULL)
 877                 l2_packet_deinit(drv->sock_xmit);
 878         if (drv->ioctl_sock >= 0)
 879                 close(drv->ioctl_sock);
 880         if (drv != NULL)
 881                 os_free(drv);
 882         return NULL;
 883 }
 884
 885
 886 static void
 887 bsd_deinit(void *priv)
 888 {
 889         struct bsd_driver_data *drv = priv;
 890
 891         bsd_wireless_event_deinit(drv);
 892         (void) bsd_set_iface_flags(drv, 0);
 893         if (drv->ioctl_sock >= 0)
 894                 close(drv->ioctl_sock);
 895         if (drv->sock_xmit != NULL)
 896                 l2_packet_deinit(drv->sock_xmit);
 897         os_free(drv);
 898 }
 899
 900 const struct wpa_driver_ops wpa_driver_bsd_ops = {
 901         .name                   = "bsd",
 902         .hapd_init              = bsd_init,
 903         .hapd_deinit            = bsd_deinit,
 904         .set_ieee8021x          = bsd_set_ieee8021x,
 905         .set_privacy            = bsd_set_privacy,
 906         .set_key                = bsd_set_key,
 907         .get_seqnum             = bsd_get_seqnum,
 908         .flush                  = bsd_flush,
 909         .set_generic_elem       = bsd_set_opt_ie,
 910         .sta_set_flags          = bsd_sta_set_flags,
 911         .read_sta_data          = bsd_read_sta_driver_data,
 912         .hapd_send_eapol        = bsd_send_eapol,
 913         .sta_disassoc           = bsd_sta_disassoc,
 914         .sta_deauth             = bsd_sta_deauth,
 915         .hapd_set_ssid          = hostapd_bsd_set_ssid,
 916         .hapd_get_ssid          = hostapd_bsd_get_ssid,
 917         .set_freq               = bsd_set_freq,
 918 };
 919
 920 #else /* HOSTAPD */
 921
 922 struct wpa_driver_bsd_data {
 923         int     sock;                   /* open socket for 802.11 ioctls */
 924         int     route;                  /* routing socket for events */
 925         char    ifname[IFNAMSIZ+1];     /* interface name */
 926         unsigned int ifindex;           /* interface index */
 927         void    *ctx;
 928         int     prev_roaming;           /* roaming state to restore on deinit */
 929         int     prev_privacy;           /* privacy state to restore on deinit */
 930         int     prev_wpa;               /* wpa state to restore on deinit */
 931 };
 932
 933 static int
 934 set80211var(struct wpa_driver_bsd_data *drv, int op, const void *arg, int arg_len)
 935 {
 936         return bsd_set80211var(drv->sock, drv->ifname, op, arg, arg_len);
 937 }
 938
 939 static int
 940 get80211var(struct wpa_driver_bsd_data *drv, int op, void *arg, int arg_len)
 941 {
 942         return bsd_get80211var(drv->sock, drv->ifname, op, arg, arg_len);
 943 }
 944
 945 static int
 946 set80211param(struct wpa_driver_bsd_data *drv, int op, int arg)
 947 {
 948         return bsd_set80211param(drv->sock, drv->ifname, op, arg);
 949 }
 950
 951 static int
 952 get80211param(struct wpa_driver_bsd_data *drv, int op)
 953 {
 954         struct ieee80211req ireq;
 955
 956         os_memset(&ireq, 0, sizeof(ireq));
 957         os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
 958         ireq.i_type = op;
 959
 960         if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
 961                 fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n",
 962                         op, strerror(errno));
 963                 return -1;
 964         }
 965         return ireq.i_val;
 966 }
 967
 968 static int
 969 getifflags(struct wpa_driver_bsd_data *drv, int *flags)
 970 {
 971         struct ifreq ifr;
 972
 973         os_memset(&ifr, 0, sizeof(ifr));
 974         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 975         if (ioctl(drv->sock, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
 976                 perror("SIOCGIFFLAGS");
 977                 return errno;
 978         }
 979         *flags = ifr.ifr_flags & 0xffff;
 980         return 0;
 981 }
 982
 983 static int
 984 setifflags(struct wpa_driver_bsd_data *drv, int flags)
 985 {
 986         struct ifreq ifr;
 987
 988         os_memset(&ifr, 0, sizeof(ifr));
 989         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 990         ifr.ifr_flags = flags & 0xffff;
 991         if (ioctl(drv->sock, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
 992                 perror("SIOCSIFFLAGS");
 993                 return errno;
 994         }
 995         return 0;
 996 }
 997
 998 static int
 999 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
1000 {
1001         struct wpa_driver_bsd_data *drv = priv;
1002 #ifdef SIOCG80211BSSID
1003         struct ieee80211_bssid bs;
1004
1005         os_strncpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
1006         if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
1007                 return -1;
1008         os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
1009         return 0;
1010 #else
1011         return get80211var(drv, IEEE80211_IOC_BSSID,
1012                 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
1013 #endif
1014 }
1015
1016 #if 0
1017 static int
1018 wpa_driver_bsd_set_bssid(void *priv, const char *bssid)
1019 {
1020         struct wpa_driver_bsd_data *drv = priv;
1021
1022         return set80211var(drv, IEEE80211_IOC_BSSID,
1023                 bssid, IEEE80211_ADDR_LEN);
1024 }
1025 #endif
1026
1027 static int
1028 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
1029 {
1030         struct wpa_driver_bsd_data *drv = priv;
1031
1032         return bsd_get_ssid(drv->sock, drv->ifname, ssid);
1033 }
1034
1035 static int
1036 wpa_driver_bsd_set_ssid(void *priv, const u8 *ssid,
1037                              size_t ssid_len)
1038 {
1039         struct wpa_driver_bsd_data *drv = priv;
1040
1041         return bsd_set_ssid(drv->sock, drv->ifname, ssid, ssid_len);
1042 }
1043
1044 static int
1045 wpa_driver_bsd_set_wpa_ie(struct wpa_driver_bsd_data *drv,
1046         const u8 *wpa_ie, size_t wpa_ie_len)
1047 {
1048 #ifdef IEEE80211_IOC_APPIE
1049         return set80211var(drv, IEEE80211_IOC_APPIE, wpa_ie, wpa_ie_len);
1050 #else /* IEEE80211_IOC_APPIE */
1051         return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
1052 #endif /* IEEE80211_IOC_APPIE */
1053 }
1054
1055 static int
1056 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
1057 {
1058         struct wpa_driver_bsd_data *drv = priv;
1059         int ret = 0;
1060
1061         wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
1062                 __FUNCTION__, wpa, privacy);
1063
1064         if (!wpa && wpa_driver_bsd_set_wpa_ie(drv, NULL, 0) < 0)
1065                 ret = -1;
1066         if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1067                 ret = -1;
1068         if (set80211param(drv, IEEE80211_IOC_WPA, wpa) < 0)
1069                 ret = -1;
1070
1071         return ret;
1072 }
1073
1074 static int
1075 wpa_driver_bsd_set_wpa(void *priv, int enabled)
1076 {
1077         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1078
1079         return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
1080 }
1081
1082 static int
1083 wpa_driver_bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
1084                        const unsigned char *addr, int key_idx, int set_tx,
1085                        const u8 *seq, size_t seq_len,
1086                        const u8 *key, size_t key_len)
1087 {
1088         struct wpa_driver_bsd_data *drv = priv;
1089         struct ieee80211req_key wk;
1090         struct ether_addr ea;
1091         char *alg_name;
1092         u_int8_t cipher;
1093
1094         if (alg == WPA_ALG_NONE)
1095                 return bsd_del_key(drv->sock, drv->ifname,
1096                                    os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
1097                                    IEEE80211_ADDR_LEN) == 0 ? NULL : addr,
1098                                    key_idx);
1099
1100         switch (alg) {
1101         case WPA_ALG_WEP:
1102                 alg_name = "WEP";
1103                 cipher = IEEE80211_CIPHER_WEP;
1104                 break;
1105         case WPA_ALG_TKIP:
1106                 alg_name = "TKIP";
1107                 cipher = IEEE80211_CIPHER_TKIP;
1108                 break;
1109         case WPA_ALG_CCMP:
1110                 alg_name = "CCMP";
1111                 cipher = IEEE80211_CIPHER_AES_CCM;
1112                 break;
1113         default:
1114                 wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
1115                         __func__, alg);
1116                 return -1;
1117         }
1118
1119         os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1120         wpa_printf(MSG_DEBUG,
1121                 "%s: alg=%s addr=%s key_idx=%d set_tx=%d seq_len=%zu key_len=%zu",
1122                 __func__, alg_name, ether_ntoa(&ea), key_idx, set_tx,
1123                 seq_len, key_len);
1124
1125         if (seq_len > sizeof(u_int64_t)) {
1126                 wpa_printf(MSG_DEBUG, "%s: seq_len %zu too big",
1127                         __func__, seq_len);
1128                 return -2;
1129         }
1130         if (key_len > sizeof(wk.ik_keydata)) {
1131                 wpa_printf(MSG_DEBUG, "%s: key length %zu too big",
1132                         __func__, key_len);
1133                 return -3;
1134         }
1135
1136         os_memset(&wk, 0, sizeof(wk));
1137         wk.ik_type = cipher;
1138         wk.ik_flags = IEEE80211_KEY_RECV;
1139         if (set_tx)
1140                 wk.ik_flags |= IEEE80211_KEY_XMIT;
1141         os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
1142         /*
1143          * Deduce whether group/global or unicast key by checking
1144          * the address (yech).  Note also that we can only mark global
1145          * keys default; doing this for a unicast key is an error.
1146          */
1147         if (bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) == 0) {
1148                 wk.ik_flags |= IEEE80211_KEY_GROUP;
1149                 wk.ik_keyix = key_idx;
1150         } else {
1151                 wk.ik_keyix = (key_idx == 0 ? IEEE80211_KEYIX_NONE : key_idx);
1152         }
1153         if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
1154                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
1155         wk.ik_keylen = key_len;
1156         os_memcpy(&wk.ik_keyrsc, seq, seq_len);
1157         os_memcpy(wk.ik_keydata, key, key_len);
1158
1159         return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
1160 }
1161
1162 static int
1163 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
1164 {
1165         struct wpa_driver_bsd_data *drv = priv;
1166
1167         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1168         return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
1169 }
1170
1171
1172 static int
1173 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
1174 {
1175         struct wpa_driver_bsd_data *drv = priv;
1176
1177         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1178         return set80211param(drv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
1179 }
1180
1181 static int
1182 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
1183 {
1184         struct wpa_driver_bsd_data *drv = priv;
1185         struct ieee80211req_mlme mlme;
1186
1187         wpa_printf(MSG_DEBUG, "%s", __func__);
1188         os_memset(&mlme, 0, sizeof(mlme));
1189         mlme.im_op = IEEE80211_MLME_DEAUTH;
1190         mlme.im_reason = reason_code;
1191         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1192         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1193 }
1194
1195 static int
1196 wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
1197 {
1198         struct wpa_driver_bsd_data *drv = priv;
1199         struct ieee80211req_mlme mlme;
1200
1201         wpa_printf(MSG_DEBUG, "%s", __func__);
1202         os_memset(&mlme, 0, sizeof(mlme));
1203         mlme.im_op = IEEE80211_MLME_DISASSOC;
1204         mlme.im_reason = reason_code;
1205         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1206         return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1207 }
1208
1209 static int
1210 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
1211 {
1212         struct wpa_driver_bsd_data *drv = priv;
1213         int authmode;
1214
1215         if ((auth_alg & WPA_AUTH_ALG_OPEN) &&
1216             (auth_alg & WPA_AUTH_ALG_SHARED))
1217                 authmode = IEEE80211_AUTH_AUTO;
1218         else if (auth_alg & WPA_AUTH_ALG_SHARED)
1219                 authmode = IEEE80211_AUTH_SHARED;
1220         else
1221                 authmode = IEEE80211_AUTH_OPEN;
1222
1223         return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
1224 }
1225
1226 static int
1227 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
1228 {
1229         struct wpa_driver_bsd_data *drv = priv;
1230         struct ieee80211req_mlme mlme;
1231         int privacy;
1232         int ret = 0;
1233
1234         wpa_printf(MSG_DEBUG,
1235                 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1236                 , __func__
1237                    , (unsigned int) params->ssid_len, params->ssid
1238                 , (unsigned int) params->wpa_ie_len
1239                 , params->pairwise_suite
1240                 , params->group_suite
1241                 , params->key_mgmt_suite
1242         );
1243
1244         if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1245             < 0)
1246                 ret = -1;
1247         if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1248                 ret = -1;
1249         /* XXX error handling is wrong but unclear what to do... */
1250         if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1251                 return -1;
1252
1253         privacy = !(params->pairwise_suite == CIPHER_NONE &&
1254             params->group_suite == CIPHER_NONE &&
1255             params->key_mgmt_suite == KEY_MGMT_NONE &&
1256             params->wpa_ie_len == 0);
1257         wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1258
1259         if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1260                 return -1;
1261
1262         if (params->wpa_ie_len &&
1263             set80211param(drv, IEEE80211_IOC_WPA,
1264                           params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1265                 return -1;
1266
1267         os_memset(&mlme, 0, sizeof(mlme));
1268         mlme.im_op = IEEE80211_MLME_ASSOC;
1269         if (params->ssid != NULL)
1270                 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1271         mlme.im_ssid_len = params->ssid_len;
1272         if (params->bssid != NULL)
1273                 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1274         if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1275                 return -1;
1276         return ret;
1277 }
1278
1279 static int
1280 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
1281 {
1282         struct wpa_driver_bsd_data *drv = priv;
1283         int flags;
1284         const u8 *ssid = params->ssids[0].ssid;
1285         size_t ssid_len = params->ssids[0].ssid_len;
1286
1287         /* NB: interface must be marked UP to do a scan */
1288         if (getifflags(drv, &flags) != 0 || setifflags(drv, flags | IFF_UP) != 0)
1289                 return -1;
1290
1291         /* set desired ssid before scan */
1292         if (wpa_driver_bsd_set_ssid(drv, ssid, ssid_len) < 0)
1293                 return -1;
1294
1295         /* NB: net80211 delivers a scan complete event so no need to poll */
1296         return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1297 }
1298
1299 static void
1300 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1301 {
1302         struct wpa_driver_bsd_data *drv = sock_ctx;
1303         char buf[2048];
1304         struct if_announcemsghdr *ifan;
1305         struct if_msghdr *ifm;
1306         struct rt_msghdr *rtm;
1307         union wpa_event_data event;
1308         struct ieee80211_michael_event *mic;
1309         int n;
1310
1311         n = read(sock, buf, sizeof(buf));
1312         if (n < 0) {
1313                 if (errno != EINTR && errno != EAGAIN)
1314                         perror("read(PF_ROUTE)");
1315                 return;
1316         }
1317
1318         rtm = (struct rt_msghdr *) buf;
1319         if (rtm->rtm_version != RTM_VERSION) {
1320                 wpa_printf(MSG_DEBUG, "Routing message version %d not "
1321                         "understood\n", rtm->rtm_version);
1322                 return;
1323         }
1324         os_memset(&event, 0, sizeof(event));
1325         switch (rtm->rtm_type) {
1326         case RTM_IFANNOUNCE:
1327                 ifan = (struct if_announcemsghdr *) rtm;
1328                 if (ifan->ifan_index != drv->ifindex)
1329                         break;
1330                 strlcpy(event.interface_status.ifname, drv->ifname,
1331                         sizeof(event.interface_status.ifname));
1332                 switch (ifan->ifan_what) {
1333                 case IFAN_DEPARTURE:
1334                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1335                 default:
1336                         return;
1337                 }
1338                 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1339                            event.interface_status.ifname,
1340                            ifan->ifan_what == IFAN_DEPARTURE ?
1341                                 "removed" : "added");
1342                 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1343                 break;
1344         case RTM_IEEE80211:
1345                 ifan = (struct if_announcemsghdr *) rtm;
1346                 if (ifan->ifan_index != drv->ifindex)
1347                         break;
1348                 switch (ifan->ifan_what) {
1349                 case RTM_IEEE80211_ASSOC:
1350                 case RTM_IEEE80211_REASSOC:
1351                         wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1352                         break;
1353                 case RTM_IEEE80211_DISASSOC:
1354                         wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1355                         break;
1356                 case RTM_IEEE80211_SCAN:
1357                         wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1358                         break;
1359                 case RTM_IEEE80211_REPLAY:
1360                         /* ignore */
1361                         break;
1362                 case RTM_IEEE80211_MICHAEL:
1363                         mic = (struct ieee80211_michael_event *) &ifan[1];
1364                         wpa_printf(MSG_DEBUG,
1365                                 "Michael MIC failure wireless event: "
1366                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1367                                 MAC2STR(mic->iev_src));
1368
1369                         os_memset(&event, 0, sizeof(event));
1370                         event.michael_mic_failure.unicast =
1371                                 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1372                         wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1373                                 &event);
1374                         break;
1375                 }
1376                 break;
1377         case RTM_IFINFO:
1378                 ifm = (struct if_msghdr *) rtm;
1379                 if (ifm->ifm_index != drv->ifindex)
1380                         break;
1381                 if ((rtm->rtm_flags & RTF_UP) == 0) {
1382                         strlcpy(event.interface_status.ifname, drv->ifname,
1383                                 sizeof(event.interface_status.ifname));
1384                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1385                         wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1386                                    event.interface_status.ifname);
1387                         wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1388                 }
1389                 break;
1390         }
1391 }
1392
1393 static void
1394 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1395                               struct ieee80211req_scan_result *sr)
1396 {
1397         struct wpa_scan_res *result, **tmp;
1398         size_t extra_len;
1399         u8 *pos;
1400
1401         extra_len = 2 + sr->isr_ssid_len;
1402         extra_len += 2 + sr->isr_nrates;
1403         extra_len += 3; /* ERP IE */
1404         extra_len += sr->isr_ie_len;
1405
1406         result = os_zalloc(sizeof(*result) + extra_len);
1407         if (result == NULL)
1408                 return;
1409         os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1410         result->freq = sr->isr_freq;
1411         result->beacon_int = sr->isr_intval;
1412         result->caps = sr->isr_capinfo;
1413         result->qual = sr->isr_rssi;
1414         result->noise = sr->isr_noise;
1415
1416         pos = (u8 *)(result + 1);
1417
1418         *pos++ = WLAN_EID_SSID;
1419         *pos++ = sr->isr_ssid_len;
1420         os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1421         pos += sr->isr_ssid_len;
1422
1423         /*
1424          * Deal all rates as supported rate.
1425          * Because net80211 doesn't report extended supported rate or not.
1426          */
1427         *pos++ = WLAN_EID_SUPP_RATES;
1428         *pos++ = sr->isr_nrates;
1429         os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1430         pos += sr->isr_nrates;
1431
1432         *pos++ = WLAN_EID_ERP_INFO;
1433         *pos++ = 1;
1434         *pos++ = sr->isr_erp;
1435
1436         os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1437         pos += sr->isr_ie_len;
1438
1439         result->ie_len = pos - (u8 *)(result + 1);
1440
1441         tmp = os_realloc(res->res,
1442                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1443         if (tmp == NULL) {
1444                 os_free(result);
1445                 return;
1446         }
1447         tmp[res->num++] = result;
1448         res->res = tmp;
1449 }
1450
1451 struct wpa_scan_results *
1452 wpa_driver_bsd_get_scan_results2(void *priv)
1453 {
1454         struct wpa_driver_bsd_data *drv = priv;
1455         struct ieee80211req_scan_result *sr;
1456         struct wpa_scan_results *res;
1457         int len, rest;
1458         uint8_t buf[24*1024], *pos;
1459
1460         len = get80211var(drv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1461         if (len < 0)
1462                 return NULL;
1463
1464         res = os_zalloc(sizeof(*res));
1465         if (res == NULL)
1466                 return NULL;
1467
1468         pos = buf;
1469         rest = len;
1470         while (rest >= sizeof(struct ieee80211req_scan_result)) {
1471                 sr = (struct ieee80211req_scan_result *)pos;
1472                 wpa_driver_bsd_add_scan_entry(res, sr);
1473                 pos += sr->isr_len;
1474                 rest -= sr->isr_len;
1475         }
1476
1477         wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1478                    len, (unsigned long)res->num);
1479
1480         return res;
1481 }
1482
1483 static void *
1484 wpa_driver_bsd_init(void *ctx, const char *ifname)
1485 {
1486 #define GETPARAM(drv, param, v) \
1487         (((v) = get80211param(drv, param)) != -1)
1488         struct wpa_driver_bsd_data *drv;
1489
1490         drv = os_zalloc(sizeof(*drv));
1491         if (drv == NULL)
1492                 return NULL;
1493         /*
1494          * NB: We require the interface name be mappable to an index.
1495          *     This implies we do not support having wpa_supplicant
1496          *     wait for an interface to appear.  This seems ok; that
1497          *     doesn't belong here; it's really the job of devd.
1498          */
1499         drv->ifindex = if_nametoindex(ifname);
1500         if (drv->ifindex == 0) {
1501                 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1502                            __func__, ifname);
1503                 goto fail1;
1504         }
1505         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1506         if (drv->sock < 0)
1507                 goto fail1;
1508         drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1509         if (drv->route < 0)
1510                 goto fail;
1511         eloop_register_read_sock(drv->route,
1512                 wpa_driver_bsd_event_receive, ctx, drv);
1513
1514         drv->ctx = ctx;
1515         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1516
1517         if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1518                 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1519                         __func__, strerror(errno));
1520                 goto fail;
1521         }
1522         if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1523                 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1524                         __func__, strerror(errno));
1525                 goto fail;
1526         }
1527         if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1528                 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1529                         __func__, strerror(errno));
1530                 goto fail;
1531         }
1532
1533         if (bsd_set_mediaopt(drv->sock, drv->ifname, IFM_OMASK,
1534                              0 /* STA */) < 0) {
1535                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1536                            __func__);
1537                 goto fail;
1538         }
1539         if (set80211param(drv, IEEE80211_IOC_ROAMING, IEEE80211_ROAMING_MANUAL) < 0) {
1540                 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
1541                            "roaming: %s", __func__, strerror(errno));
1542                 goto fail;
1543         }
1544
1545         if (set80211param(drv, IEEE80211_IOC_WPA, 1+2) < 0) {
1546                 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support %s",
1547                            __func__, strerror(errno));
1548                 goto fail;
1549         }
1550
1551         wpa_driver_bsd_set_wpa(drv, 1);
1552
1553         return drv;
1554 fail:
1555         close(drv->sock);
1556 fail1:
1557         os_free(drv);
1558         return NULL;
1559 #undef GETPARAM
1560 }
1561
1562 static void
1563 wpa_driver_bsd_deinit(void *priv)
1564 {
1565         struct wpa_driver_bsd_data *drv = priv;
1566         int flags;
1567
1568         wpa_driver_bsd_set_wpa(drv, 0);
1569         eloop_unregister_read_sock(drv->route);
1570
1571         /* NB: mark interface down */
1572         if (getifflags(drv, &flags) == 0)
1573                 (void) setifflags(drv, flags &~ IFF_UP);
1574
1575         wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1576         if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1577                 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1578                         __func__);
1579
1580         (void) close(drv->route);               /* ioctl socket */
1581         (void) close(drv->sock);                /* event socket */
1582         os_free(drv);
1583 }
1584
1585
1586 const struct wpa_driver_ops wpa_driver_bsd_ops = {
1587         .name                   = "bsd",
1588         .desc                   = "BSD 802.11 support",
1589         .init                   = wpa_driver_bsd_init,
1590         .deinit                 = wpa_driver_bsd_deinit,
1591         .get_bssid              = wpa_driver_bsd_get_bssid,
1592         .get_ssid               = wpa_driver_bsd_get_ssid,
1593         .set_key                = wpa_driver_bsd_set_key,
1594         .set_countermeasures    = wpa_driver_bsd_set_countermeasures,
1595         .scan2                  = wpa_driver_bsd_scan,
1596         .get_scan_results2      = wpa_driver_bsd_get_scan_results2,
1597         .deauthenticate         = wpa_driver_bsd_deauthenticate,
1598         .disassociate           = wpa_driver_bsd_disassociate,
1599         .associate              = wpa_driver_bsd_associate,
1600 };
1601
1602 #endif /* HOSTAPD */