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 #include "l2_packet/l2_packet.h"
  50
  51 struct bsd_driver_data {
  52         struct hostapd_data *hapd;      /* back pointer */
  53
  54         int     sock;                   /* open socket for 802.11 ioctls */
  55         struct l2_packet_data *sock_xmit;/* raw packet xmit socket */
  56         int     route;                  /* routing socket for events */
  57         char    ifname[IFNAMSIZ+1];     /* interface name */
  58         unsigned int ifindex;           /* interface index */
  59         void    *ctx;
  60         struct wpa_driver_capa capa;    /* driver capability */
  61         int     is_ap;                  /* Access point mode */
  62         int     prev_roaming;   /* roaming state to restore on deinit */
  63         int     prev_privacy;   /* privacy state to restore on deinit */
  64         int     prev_wpa;       /* wpa state to restore on deinit */
  65 };
  66
  67 /* Generic functions for hostapd and wpa_supplicant */
  68
  69 static int
  70 bsd_set80211var(int s, const char *ifname, int op, const 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 = (void *) arg;
  79
  80         if (ioctl(s, SIOCS80211, &ireq) < 0) {
  81                 fprintf(stderr, "ioctl[SIOCS80211, op %u, len %u]: %s\n",
  82                         op, arg_len, strerror(errno));
  83                 return -1;
  84         }
  85         return 0;
  86 }
  87
  88 static int
  89 bsd_get80211var(int s, const char *ifname, int op, void *arg, int arg_len)
  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_len = arg_len;
  97         ireq.i_data = arg;
  98
  99         if (ioctl(s, SIOCG80211, &ireq) < 0) {
 100                 fprintf(stderr, "ioctl[SIOCG80211, op %u, len %u]: %s\n",
 101                         op, arg_len, strerror(errno));
 102                 return -1;
 103         }
 104         return ireq.i_len;
 105 }
 106
 107 static int
 108 bsd_set80211param(int s, const char *ifname, int op, int arg)
 109 {
 110         struct ieee80211req ireq;
 111
 112         os_memset(&ireq, 0, sizeof(ireq));
 113         os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
 114         ireq.i_type = op;
 115         ireq.i_val = arg;
 116
 117         if (ioctl(s, SIOCS80211, &ireq) < 0) {
 118                 fprintf(stderr, "ioctl[SIOCS80211, op %u, arg 0x%x]: %s\n",
 119                         op, arg, strerror(errno));
 120                 return -1;
 121         }
 122         return 0;
 123 }
 124
 125 static int
 126 get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
 127 {
 128         return bsd_get80211var(drv->sock, drv->ifname, op, arg, arg_len);
 129 }
 130
 131 static int
 132 set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
 133 {
 134         return bsd_set80211var(drv->sock, drv->ifname, op, arg, arg_len);
 135 }
 136
 137 static int
 138 set80211param(struct bsd_driver_data *drv, int op, int arg)
 139 {
 140         return bsd_set80211param(drv->sock, drv->ifname, op, arg);
 141 }
 142
 143 static int
 144 bsd_get_ssid(const char *ifname, void *priv, u8 *ssid, int len)
 145 {
 146         struct bsd_driver_data *drv = priv;
 147 #ifdef SIOCG80211NWID
 148         struct ieee80211_nwid nwid;
 149         struct ifreq ifr;
 150
 151         os_memset(&ifr, 0, sizeof(ifr));
 152         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 153         ifr.ifr_data = (void *)&nwid;
 154         if (ioctl(drv->sock, SIOCG80211NWID, &ifr) < 0 ||
 155             nwid.i_len > IEEE80211_NWID_LEN)
 156                 return -1;
 157         os_memcpy(ssid, nwid.i_nwid, nwid.i_len);
 158         return nwid.i_len;
 159 #else
 160         return get80211var(drv, IEEE80211_IOC_SSID, ssid, IEEE80211_NWID_LEN);
 161 #endif
 162 }
 163
 164 static int
 165 bsd_set_ssid(const char *ifname, void *priv, const u8 *ssid, int ssid_len)
 166 {
 167         struct bsd_driver_data *drv = priv;
 168 #ifdef SIOCS80211NWID
 169         struct ieee80211_nwid nwid;
 170         struct ifreq ifr;
 171
 172         os_memcpy(nwid.i_nwid, ssid, ssid_len);
 173         nwid.i_len = ssid_len;
 174         os_memset(&ifr, 0, sizeof(ifr));
 175         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 176         ifr.ifr_data = (void *)&nwid;
 177         return ioctl(drv->sock, SIOCS80211NWID, &ifr);
 178 #else
 179         return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len);
 180 #endif
 181 }
 182
 183 static int
 184 bsd_get_if_media(void *priv)
 185 {
 186         struct bsd_driver_data *drv = priv;
 187         struct ifmediareq ifmr;
 188
 189         os_memset(&ifmr, 0, sizeof(ifmr));
 190         os_strlcpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name));
 191
 192         if (ioctl(drv->sock, SIOCGIFMEDIA, &ifmr) < 0) {
 193                 wpa_printf(MSG_ERROR, "%s: SIOCGIFMEDIA %s", __func__,
 194                            strerror(errno));
 195                 return -1;
 196         }
 197
 198         return ifmr.ifm_current;
 199 }
 200
 201 static int
 202 bsd_set_if_media(void *priv, int media)
 203 {
 204         struct bsd_driver_data *drv = priv;
 205         struct ifreq ifr;
 206
 207         os_memset(&ifr, 0, sizeof(ifr));
 208         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 209         ifr.ifr_media = media;
 210
 211         if (ioctl(drv->sock, SIOCSIFMEDIA, &ifr) < 0) {
 212                 wpa_printf(MSG_ERROR, "%s: SIOCSIFMEDIA %s", __func__,
 213                            strerror(errno));
 214                 return -1;
 215         }
 216
 217         return 0;
 218 }
 219
 220 static int
 221 bsd_set_mediaopt(void *priv, uint32_t mask, uint32_t mode)
 222 {
 223         int media = bsd_get_if_media(priv);
 224
 225         if (media < 0)
 226                 return -1;
 227         media &= ~mask;
 228         media |= mode;
 229         if (bsd_set_if_media(priv, media) < 0)
 230                 return -1;
 231         return 0;
 232 }
 233
 234 static int
 235 bsd_del_key(void *priv, const u8 *addr, int key_idx)
 236 {
 237         struct ieee80211req_del_key wk;
 238
 239         os_memset(&wk, 0, sizeof(wk));
 240         if (addr == NULL) {
 241                 wpa_printf(MSG_DEBUG, "%s: key_idx=%d", __func__, key_idx);
 242                 wk.idk_keyix = key_idx;
 243         } else {
 244                 wpa_printf(MSG_DEBUG, "%s: addr=" MACSTR, __func__,
 245                            MAC2STR(addr));
 246                 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 247                 wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */
 248         }
 249
 250         return set80211var(priv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
 251 }
 252
 253 static int
 254 bsd_send_mlme_param(void *priv, const u8 op, const u16 reason, const u8 *addr)
 255 {
 256         struct ieee80211req_mlme mlme;
 257
 258         os_memset(&mlme, 0, sizeof(mlme));
 259         mlme.im_op = op;
 260         mlme.im_reason = reason;
 261         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 262         return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
 263 }
 264
 265 static int
 266 bsd_ctrl_iface(void *priv, int enable)
 267 {
 268         struct bsd_driver_data *drv = priv;
 269         struct ifreq ifr;
 270
 271         os_memset(&ifr, 0, sizeof(ifr));
 272         os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
 273
 274         if (ioctl(drv->sock, SIOCGIFFLAGS, &ifr) < 0) {
 275                 perror("ioctl[SIOCGIFFLAGS]");
 276                 return -1;
 277         }
 278
 279         if (enable)
 280                 ifr.ifr_flags |= IFF_UP;
 281         else
 282                 ifr.ifr_flags &= ~IFF_UP;
 283
 284         if (ioctl(drv->sock, SIOCSIFFLAGS, &ifr) < 0) {
 285                 perror("ioctl[SIOCSIFFLAGS]");
 286                 return -1;
 287         }
 288
 289         return 0;
 290 }
 291
 292 static int
 293 bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
 294             const unsigned char *addr, int key_idx, int set_tx, const u8 *seq,
 295             size_t seq_len, const u8 *key, size_t key_len)
 296 {
 297         struct ieee80211req_key wk;
 298
 299         wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d "
 300                    "seq_len=%zu key_len=%zu", __func__, alg, addr, key_idx,
 301                    set_tx, seq_len, key_len);
 302
 303         if (alg == WPA_ALG_NONE) {
 304 #ifndef HOSTAPD
 305                 if (addr == NULL ||
 306                     os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
 307                               IEEE80211_ADDR_LEN) == 0)
 308                         return bsd_del_key(priv, NULL, key_idx);
 309                 else
 310 #endif /* HOSTAPD */
 311                         return bsd_del_key(priv, addr, key_idx);
 312         }
 313
 314         os_memset(&wk, 0, sizeof(wk));
 315         switch (alg) {
 316         case WPA_ALG_WEP:
 317                 wk.ik_type = IEEE80211_CIPHER_WEP;
 318                 break;
 319         case WPA_ALG_TKIP:
 320                 wk.ik_type = IEEE80211_CIPHER_TKIP;
 321                 break;
 322         case WPA_ALG_CCMP:
 323                 wk.ik_type = IEEE80211_CIPHER_AES_CCM;
 324                 break;
 325         default:
 326                 wpa_printf(MSG_ERROR, "%s: unknown alg=%d", __func__, alg);
 327                 return -1;
 328         }
 329
 330         wk.ik_flags = IEEE80211_KEY_RECV;
 331         if (set_tx)
 332                 wk.ik_flags |= IEEE80211_KEY_XMIT;
 333
 334         if (addr == NULL) {
 335                 os_memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 336                 wk.ik_keyix = key_idx;
 337         } else {
 338                 os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 339                 /*
 340                  * Deduce whether group/global or unicast key by checking
 341                  * the address (yech).  Note also that we can only mark global
 342                  * keys default; doing this for a unicast key is an error.
 343                  */
 344                 if (os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
 345                               IEEE80211_ADDR_LEN) == 0) {
 346                         wk.ik_flags |= IEEE80211_KEY_GROUP;
 347                         wk.ik_keyix = key_idx;
 348                 } else {
 349                         wk.ik_keyix = key_idx == 0 ? IEEE80211_KEYIX_NONE :
 350                                 key_idx;
 351                 }
 352         }
 353         if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
 354                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 355         wk.ik_keylen = key_len;
 356         os_memcpy(&wk.ik_keyrsc, seq, seq_len);
 357         os_memcpy(wk.ik_keydata, key, key_len);
 358
 359         return set80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
 360 }
 361
 362 static int
 363 bsd_configure_wpa(void *priv, struct wpa_bss_params *params)
 364 {
 365 #ifndef IEEE80211_IOC_APPIE
 366         static const char *ciphernames[] =
 367                 { "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
 368         int v;
 369
 370         switch (params->wpa_group) {
 371         case WPA_CIPHER_CCMP:
 372                 v = IEEE80211_CIPHER_AES_CCM;
 373                 break;
 374         case WPA_CIPHER_TKIP:
 375                 v = IEEE80211_CIPHER_TKIP;
 376                 break;
 377         case WPA_CIPHER_WEP104:
 378                 v = IEEE80211_CIPHER_WEP;
 379                 break;
 380         case WPA_CIPHER_WEP40:
 381                 v = IEEE80211_CIPHER_WEP;
 382                 break;
 383         case WPA_CIPHER_NONE:
 384                 v = IEEE80211_CIPHER_NONE;
 385                 break;
 386         default:
 387                 printf("Unknown group key cipher %u\n",
 388                         params->wpa_group);
 389                 return -1;
 390         }
 391         wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
 392                    __func__, ciphernames[v], v);
 393         if (set80211param(priv, IEEE80211_IOC_MCASTCIPHER, v)) {
 394                 printf("Unable to set group key cipher to %u (%s)\n",
 395                         v, ciphernames[v]);
 396                 return -1;
 397         }
 398         if (v == IEEE80211_CIPHER_WEP) {
 399                 /* key length is done only for specific ciphers */
 400                 v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 401                 if (set80211param(priv, IEEE80211_IOC_MCASTKEYLEN, v)) {
 402                         printf("Unable to set group key length to %u\n", v);
 403                         return -1;
 404                 }
 405         }
 406
 407         v = 0;
 408         if (params->wpa_pairwise & WPA_CIPHER_CCMP)
 409                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 410         if (params->wpa_pairwise & WPA_CIPHER_TKIP)
 411                 v |= 1<<IEEE80211_CIPHER_TKIP;
 412         if (params->wpa_pairwise & WPA_CIPHER_NONE)
 413                 v |= 1<<IEEE80211_CIPHER_NONE;
 414         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 415         if (set80211param(priv, IEEE80211_IOC_UCASTCIPHERS, v)) {
 416                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 417                 return -1;
 418         }
 419
 420         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 421                    __func__, params->wpa_key_mgmt);
 422         if (set80211param(priv, IEEE80211_IOC_KEYMGTALGS,
 423                           params->wpa_key_mgmt)) {
 424                 printf("Unable to set key management algorithms to 0x%x\n",
 425                         params->wpa_key_mgmt);
 426                 return -1;
 427         }
 428
 429         v = 0;
 430         if (params->rsn_preauth)
 431                 v |= BIT(0);
 432         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 433                    __func__, params->rsn_preauth);
 434         if (set80211param(priv, IEEE80211_IOC_RSNCAPS, v)) {
 435                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 436                 return -1;
 437         }
 438 #endif /* IEEE80211_IOC_APPIE */
 439
 440         wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, params->wpa);
 441         if (set80211param(priv, IEEE80211_IOC_WPA, params->wpa)) {
 442                 printf("Unable to set WPA to %u\n", params->wpa);
 443                 return -1;
 444         }
 445         return 0;
 446 }
 447
 448 static int
 449 bsd_set_ieee8021x(void *priv, struct wpa_bss_params *params)
 450 {
 451         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);
 452
 453         if (!params->enabled) {
 454                 /* XXX restore state */
 455                 return set80211param(priv, IEEE80211_IOC_AUTHMODE,
 456                                      IEEE80211_AUTH_AUTO);
 457         }
 458         if (!params->wpa && !params->ieee802_1x) {
 459                 wpa_printf(MSG_ERROR, "%s: No 802.1X or WPA enabled",
 460                            __func__);
 461                 return -1;
 462         }
 463         if (params->wpa && bsd_configure_wpa(priv, params) != 0) {
 464                 wpa_printf(MSG_ERROR, "%s: Failed to configure WPA state",
 465                            __func__);
 466                 return -1;
 467         }
 468         if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
 469                 (params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 470                 wpa_printf(MSG_ERROR, "%s: Failed to enable WPA/802.1X",
 471                            __func__);
 472                 return -1;
 473         }
 474         return bsd_ctrl_iface(priv, 1);
 475 }
 476
 477 static int
 478 bsd_set_sta_authorized(void *priv, const u8 *addr, int total_flags,
 479                        int flags_or, int flags_and)
 480 {
 481         int authorized = -1;
 482
 483         /* For now, only support setting Authorized flag */
 484         if (flags_or & WPA_STA_AUTHORIZED)
 485                 authorized = 1;
 486         if (!(flags_and & WPA_STA_AUTHORIZED))
 487                 authorized = 0;
 488
 489         if (authorized < 0)
 490                 return 0;
 491
 492         return bsd_send_mlme_param(priv, authorized ?
 493                                    IEEE80211_MLME_AUTHORIZE :
 494                                    IEEE80211_MLME_UNAUTHORIZE, 0, addr);
 495 }
 496
 497 static void
 498 bsd_new_sta(void *priv, void *ctx, u8 addr[IEEE80211_ADDR_LEN])
 499 {
 500         struct ieee80211req_wpaie ie;
 501         int ielen = 0;
 502         u8 *iebuf = NULL;
 503
 504         /*
 505          * Fetch and validate any negotiated WPA/RSN parameters.
 506          */
 507         memset(&ie, 0, sizeof(ie));
 508         memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
 509         if (get80211var(priv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
 510                 printf("Failed to get WPA/RSN information element.\n");
 511                 goto no_ie;
 512         }
 513         iebuf = ie.wpa_ie;
 514         ielen = ie.wpa_ie[1];
 515         if (ielen == 0)
 516                 iebuf = NULL;
 517         else
 518                 ielen += 2;
 519
 520 no_ie:
 521         drv_event_assoc(ctx, addr, iebuf, ielen);
 522 }
 523
 524 static int
 525 bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
 526                int encrypt, const u8 *own_addr)
 527 {
 528         struct bsd_driver_data *drv = priv;
 529
 530         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", data, data_len);
 531
 532         return l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, data,
 533                               data_len);
 534 }
 535
 536 static int
 537 bsd_set_freq(void *priv, u16 channel)
 538 {
 539         struct bsd_driver_data *drv = priv;
 540 #ifdef SIOCS80211CHANNEL
 541         struct ieee80211chanreq creq;
 542 #endif /* SIOCS80211CHANNEL */
 543         u32 mode;
 544
 545         if (channel < 14)
 546                 mode = IFM_IEEE80211_11G;
 547         else if (channel == 14)
 548                 mode = IFM_IEEE80211_11B;
 549         else
 550                 mode = IFM_IEEE80211_11A;
 551         if (bsd_set_mediaopt(drv, IFM_MMASK, mode) < 0) {
 552                 wpa_printf(MSG_ERROR, "%s: failed to set modulation mode",
 553                            __func__);
 554                 return -1;
 555         }
 556
 557 #ifdef SIOCS80211CHANNEL
 558         os_memset(&creq, 0, sizeof(creq));
 559         os_strlcpy(creq.i_name, drv->ifname, sizeof(creq.i_name));
 560         creq.i_channel = channel;
 561         return ioctl(drv->sock, SIOCS80211CHANNEL, &creq);
 562 #else /* SIOCS80211CHANNEL */
 563         return set80211param(priv, IEEE80211_IOC_CHANNEL, channel);
 564 #endif /* SIOCS80211CHANNEL */
 565 }
 566
 567 static int
 568 bsd_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
 569 {
 570 #ifdef IEEE80211_IOC_APPIE
 571         struct bsd_driver_data *drv = priv;
 572         struct ieee80211req ireq;
 573
 574         os_memset(&ireq, 0, sizeof(ireq));
 575         os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
 576         ireq.i_type = IEEE80211_IOC_APPIE;
 577         ireq.i_val = IEEE80211_APPIE_WPA;
 578         ireq.i_data = (void *) ie;
 579         ireq.i_len = ie_len;
 580
 581         wpa_printf(MSG_DEBUG, "%s: set WPA+RSN ie (len %lu)", __func__,
 582                    (unsigned long)ie_len);
 583         if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
 584                 perror("Unable to set WPA+RSN ie");
 585                 return -1;
 586         }
 587 #endif /* IEEE80211_IOC_APPIE */
 588         return 0;
 589 }
 590
 591
 592 #ifdef HOSTAPD
 593
 594 /*
 595  * Avoid conflicts with hostapd definitions by undefining couple of defines
 596  * from net80211 header files.
 597  */
 598 #undef RSN_VERSION
 599 #undef WPA_VERSION
 600 #undef WPA_OUI_TYPE
 601
 602 static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
 603                           int reason_code);
 604
 605 static const char *
 606 ether_sprintf(const u8 *addr)
 607 {
 608         static char buf[sizeof(MACSTR)];
 609
 610         if (addr != NULL)
 611                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 612         else
 613                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 614         return buf;
 615 }
 616
 617 static int
 618 bsd_set_privacy(const char *ifname, void *priv, int enabled)
 619 {
 620         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 621
 622         return set80211param(priv, IEEE80211_IOC_PRIVACY, enabled);
 623 }
 624
 625 static int
 626 bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 627                u8 *seq)
 628 {
 629         struct ieee80211req_key wk;
 630
 631         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 632                    __func__, ether_sprintf(addr), idx);
 633
 634         memset(&wk, 0, sizeof(wk));
 635         if (addr == NULL)
 636                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 637         else
 638                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 639         wk.ik_keyix = idx;
 640
 641         if (get80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
 642                 printf("Failed to get encryption.\n");
 643                 return -1;
 644         }
 645
 646 #ifdef WORDS_BIGENDIAN
 647         {
 648                 /*
 649                  * wk.ik_keytsc is in host byte order (big endian), need to
 650                  * swap it to match with the byte order used in WPA.
 651                  */
 652                 int i;
 653                 u8 tmp[WPA_KEY_RSC_LEN];
 654                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 655                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 656                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 657                 }
 658         }
 659 #else /* WORDS_BIGENDIAN */
 660         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 661 #endif /* WORDS_BIGENDIAN */
 662         return 0;
 663 }
 664
 665
 666 static int
 667 bsd_flush(void *priv)
 668 {
 669         u8 allsta[IEEE80211_ADDR_LEN];
 670
 671         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 672         return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
 673 }
 674
 675
 676 static int
 677 bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 678                          const u8 *addr)
 679 {
 680         struct ieee80211req_sta_stats stats;
 681
 682         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 683         if (get80211var(priv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats))
 684             > 0) {
 685                 /* XXX? do packets counts include non-data frames? */
 686                 data->rx_packets = stats.is_stats.ns_rx_data;
 687                 data->rx_bytes = stats.is_stats.ns_rx_bytes;
 688                 data->tx_packets = stats.is_stats.ns_tx_data;
 689                 data->tx_bytes = stats.is_stats.ns_tx_bytes;
 690         }
 691         return 0;
 692 }
 693
 694 static int
 695 bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
 696 {
 697         return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
 698                                    addr);
 699 }
 700
 701 static int
 702 bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
 703                  int reason_code)
 704 {
 705         return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code,
 706                                    addr);
 707 }
 708
 709 static void
 710 bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
 711 {
 712         struct bsd_driver_data *drv = ctx;
 713         char buf[2048];
 714         struct if_announcemsghdr *ifan;
 715         struct rt_msghdr *rtm;
 716         struct ieee80211_michael_event *mic;
 717         struct ieee80211_join_event *join;
 718         struct ieee80211_leave_event *leave;
 719         int n;
 720         union wpa_event_data data;
 721
 722         n = read(sock, buf, sizeof(buf));
 723         if (n < 0) {
 724                 if (errno != EINTR && errno != EAGAIN)
 725                         perror("read(PF_ROUTE)");
 726                 return;
 727         }
 728
 729         rtm = (struct rt_msghdr *) buf;
 730         if (rtm->rtm_version != RTM_VERSION) {
 731                 wpa_printf(MSG_DEBUG, "Routing message version %d not "
 732                         "understood\n", rtm->rtm_version);
 733                 return;
 734         }
 735         ifan = (struct if_announcemsghdr *) rtm;
 736         switch (rtm->rtm_type) {
 737         case RTM_IEEE80211:
 738                 switch (ifan->ifan_what) {
 739                 case RTM_IEEE80211_ASSOC:
 740                 case RTM_IEEE80211_REASSOC:
 741                 case RTM_IEEE80211_DISASSOC:
 742                 case RTM_IEEE80211_SCAN:
 743                         break;
 744                 case RTM_IEEE80211_LEAVE:
 745                         leave = (struct ieee80211_leave_event *) &ifan[1];
 746                         drv_event_disassoc(drv->hapd, leave->iev_addr);
 747                         break;
 748                 case RTM_IEEE80211_JOIN:
 749 #ifdef RTM_IEEE80211_REJOIN
 750                 case RTM_IEEE80211_REJOIN:
 751 #endif
 752                         join = (struct ieee80211_join_event *) &ifan[1];
 753                         bsd_new_sta(drv, drv->hapd, join->iev_addr);
 754                         break;
 755                 case RTM_IEEE80211_REPLAY:
 756                         /* ignore */
 757                         break;
 758                 case RTM_IEEE80211_MICHAEL:
 759                         mic = (struct ieee80211_michael_event *) &ifan[1];
 760                         wpa_printf(MSG_DEBUG,
 761                                 "Michael MIC failure wireless event: "
 762                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
 763                                 MAC2STR(mic->iev_src));
 764                         os_memset(&data, 0, sizeof(data));
 765                         data.michael_mic_failure.unicast = 1;
 766                         data.michael_mic_failure.src = mic->iev_src;
 767                         wpa_supplicant_event(drv->hapd,
 768                                              EVENT_MICHAEL_MIC_FAILURE, &data);
 769                         break;
 770                 }
 771                 break;
 772         }
 773 }
 774
 775 static void
 776 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
 777 {
 778         struct bsd_driver_data *drv = ctx;
 779         drv_event_eapol_rx(drv->hapd, src_addr, buf, len);
 780 }
 781
 782 static int
 783 hostapd_bsd_set_freq(void *priv, struct hostapd_freq_params *freq)
 784 {
 785         return bsd_set_freq(priv, freq->channel);
 786 }
 787
 788 static void *
 789 bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
 790 {
 791         struct bsd_driver_data *drv;
 792
 793         drv = os_zalloc(sizeof(struct bsd_driver_data));
 794         if (drv == NULL) {
 795                 printf("Could not allocate memory for bsd driver data\n");
 796                 goto bad;
 797         }
 798
 799         drv->hapd = hapd;
 800         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
 801         if (drv->sock < 0) {
 802                 perror("socket[PF_INET,SOCK_DGRAM]");
 803                 goto bad;
 804         }
 805         os_strlcpy(drv->ifname, params->ifname, sizeof(drv->ifname));
 806
 807         drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
 808                                         handle_read, drv, 0);
 809         if (drv->sock_xmit == NULL)
 810                 goto bad;
 811         if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
 812                 goto bad;
 813
 814         /* mark down during setup */
 815         if (bsd_ctrl_iface(drv, 0) < 0)
 816                 goto bad;
 817
 818         drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
 819         if (drv->route < 0) {
 820                 perror("socket(PF_ROUTE,SOCK_RAW)");
 821                 goto bad;
 822         }
 823         eloop_register_read_sock(drv->route, bsd_wireless_event_receive, drv,
 824                                  NULL);
 825
 826         if (bsd_set_mediaopt(drv, IFM_OMASK, IFM_IEEE80211_HOSTAP) < 0) {
 827                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
 828                            __func__);
 829                 goto bad;
 830         }
 831
 832         return drv;
 833 bad:
 834         if (drv->sock_xmit != NULL)
 835                 l2_packet_deinit(drv->sock_xmit);
 836         if (drv->sock >= 0)
 837                 close(drv->sock);
 838         if (drv != NULL)
 839                 os_free(drv);
 840         return NULL;
 841 }
 842
 843
 844 static void
 845 bsd_deinit(void *priv)
 846 {
 847         struct bsd_driver_data *drv = priv;
 848
 849         if (drv->route >= 0) {
 850                 eloop_unregister_read_sock(drv->route);
 851                 close(drv->route);
 852         }
 853         bsd_ctrl_iface(drv, 0);
 854         if (drv->sock >= 0)
 855                 close(drv->sock);
 856         if (drv->sock_xmit != NULL)
 857                 l2_packet_deinit(drv->sock_xmit);
 858         os_free(drv);
 859 }
 860
 861 #else /* HOSTAPD */
 862
 863 static int
 864 get80211param(struct bsd_driver_data *drv, int op)
 865 {
 866         struct ieee80211req ireq;
 867
 868         os_memset(&ireq, 0, sizeof(ireq));
 869         os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
 870         ireq.i_type = op;
 871
 872         if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
 873                 fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n",
 874                         op, strerror(errno));
 875                 return -1;
 876         }
 877         return ireq.i_val;
 878 }
 879
 880 static int
 881 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
 882 {
 883         struct bsd_driver_data *drv = priv;
 884 #ifdef SIOCG80211BSSID
 885         struct ieee80211_bssid bs;
 886
 887         os_strlcpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
 888         if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
 889                 return -1;
 890         os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
 891         return 0;
 892 #else
 893         return get80211var(drv, IEEE80211_IOC_BSSID,
 894                 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
 895 #endif
 896 }
 897
 898 static int
 899 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
 900 {
 901         struct bsd_driver_data *drv = priv;
 902         return bsd_get_ssid(drv->ifname, drv, ssid, 0);
 903 }
 904
 905 static int
 906 wpa_driver_bsd_set_wpa_ie(struct bsd_driver_data *drv, const u8 *wpa_ie,
 907                           size_t wpa_ie_len)
 908 {
 909 #ifdef IEEE80211_IOC_APPIE
 910         return bsd_set_opt_ie(drv->ifname, drv, wpa_ie, wpa_ie_len);
 911 #else /* IEEE80211_IOC_APPIE */
 912         return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
 913 #endif /* IEEE80211_IOC_APPIE */
 914 }
 915
 916 static int
 917 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
 918 {
 919         int ret = 0;
 920
 921         wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
 922                 __FUNCTION__, wpa, privacy);
 923
 924         if (!wpa && wpa_driver_bsd_set_wpa_ie(priv, NULL, 0) < 0)
 925                 ret = -1;
 926         if (set80211param(priv, IEEE80211_IOC_PRIVACY, privacy) < 0)
 927                 ret = -1;
 928         if (set80211param(priv, IEEE80211_IOC_WPA, wpa) < 0)
 929                 ret = -1;
 930
 931         return ret;
 932 }
 933
 934 static int
 935 wpa_driver_bsd_set_wpa(void *priv, int enabled)
 936 {
 937         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
 938
 939         return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
 940 }
 941
 942 static int
 943 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
 944 {
 945         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 946         return set80211param(priv, IEEE80211_IOC_COUNTERMEASURES, enabled);
 947 }
 948
 949
 950 static int
 951 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
 952 {
 953         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 954         return set80211param(priv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
 955 }
 956
 957 static int
 958 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
 959 {
 960         return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
 961                                    addr);
 962 }
 963
 964 static int
 965 wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
 966 {
 967         return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code,
 968                                    addr);
 969 }
 970
 971 static int
 972 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
 973 {
 974         int authmode;
 975
 976         if ((auth_alg & WPA_AUTH_ALG_OPEN) &&
 977             (auth_alg & WPA_AUTH_ALG_SHARED))
 978                 authmode = IEEE80211_AUTH_AUTO;
 979         else if (auth_alg & WPA_AUTH_ALG_SHARED)
 980                 authmode = IEEE80211_AUTH_SHARED;
 981         else
 982                 authmode = IEEE80211_AUTH_OPEN;
 983
 984         return set80211param(priv, IEEE80211_IOC_AUTHMODE, authmode);
 985 }
 986
 987 static void
 988 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
 989 {
 990         struct bsd_driver_data *drv = ctx;
 991
 992         drv_event_eapol_rx(drv->ctx, src_addr, buf, len);
 993 }
 994
 995 static int
 996 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
 997 {
 998         struct bsd_driver_data *drv = priv;
 999         struct ieee80211req_mlme mlme;
1000         u32 mode;
1001         u16 channel;
1002         int privacy;
1003         int ret = 0;
1004
1005         wpa_printf(MSG_DEBUG,
1006                 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1007                 , __func__
1008                    , (unsigned int) params->ssid_len, params->ssid
1009                 , (unsigned int) params->wpa_ie_len
1010                 , params->pairwise_suite
1011                 , params->group_suite
1012                 , params->key_mgmt_suite
1013         );
1014
1015         switch (params->mode) {
1016         case IEEE80211_MODE_INFRA:
1017                 mode = 0 /* STA */;
1018                 break;
1019         case IEEE80211_MODE_IBSS:
1020                 mode = IFM_IEEE80211_IBSS;
1021                 break;
1022         case IEEE80211_MODE_AP:
1023                 mode = IFM_IEEE80211_HOSTAP;
1024                 break;
1025         default:
1026                 wpa_printf(MSG_ERROR, "%s: unknown operation mode", __func__);
1027                 return -1;
1028         }
1029         if (bsd_set_mediaopt(drv, IFM_OMASK, mode) < 0) {
1030                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1031                            __func__);
1032                 return -1;
1033         }
1034
1035         if (params->mode == IEEE80211_MODE_AP) {
1036                 if (params->freq >= 2412 && params->freq <= 2472)
1037                         channel = (params->freq - 2407) / 5;
1038                 else if (params->freq == 2484)
1039                         channel = 14;
1040                 else if ((params->freq >= 5180 && params->freq <= 5240) ||
1041                          (params->freq >= 5745 && params->freq <= 5825))
1042                         channel = (params->freq - 5000) / 5;
1043                 else
1044                         channel = 0;
1045                 if (bsd_set_freq(drv, channel) < 0)
1046                         return -1;
1047
1048                 drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
1049                                                 handle_read, drv, 0);
1050                 if (drv->sock_xmit == NULL)
1051                         return -1;
1052                 drv->is_ap = 1;
1053                 return 0;
1054         }
1055
1056         if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1057             < 0)
1058                 ret = -1;
1059         if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1060                 ret = -1;
1061         /* XXX error handling is wrong but unclear what to do... */
1062         if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1063                 return -1;
1064
1065         privacy = !(params->pairwise_suite == CIPHER_NONE &&
1066             params->group_suite == CIPHER_NONE &&
1067             params->key_mgmt_suite == KEY_MGMT_NONE &&
1068             params->wpa_ie_len == 0);
1069         wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1070
1071         if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1072                 return -1;
1073
1074         if (params->wpa_ie_len &&
1075             set80211param(drv, IEEE80211_IOC_WPA,
1076                           params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1077                 return -1;
1078
1079         os_memset(&mlme, 0, sizeof(mlme));
1080         mlme.im_op = IEEE80211_MLME_ASSOC;
1081         if (params->ssid != NULL)
1082                 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1083         mlme.im_ssid_len = params->ssid_len;
1084         if (params->bssid != NULL)
1085                 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1086         if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1087                 return -1;
1088         return ret;
1089 }
1090
1091 static int
1092 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
1093 {
1094         struct bsd_driver_data *drv = priv;
1095 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1096         struct ieee80211_scan_req sr;
1097         int i;
1098 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1099
1100         if (bsd_set_mediaopt(drv, IFM_OMASK, 0 /* STA */) < 0) {
1101                 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1102                            __func__);
1103                 return -1;
1104         }
1105
1106         if (set80211param(drv, IEEE80211_IOC_ROAMING,
1107                           IEEE80211_ROAMING_MANUAL) < 0) {
1108                 wpa_printf(MSG_ERROR, "%s: failed to set "
1109                            "wpa_supplicant-based roaming: %s", __func__,
1110                            strerror(errno));
1111                 return -1;
1112         }
1113
1114         if (wpa_driver_bsd_set_wpa(drv, 1) < 0) {
1115                 wpa_printf(MSG_ERROR, "%s: failed to set wpa: %s", __func__,
1116                            strerror(errno));
1117                 return -1;
1118         }
1119
1120         /* NB: interface must be marked UP to do a scan */
1121         if (bsd_ctrl_iface(drv, 1) < 0)
1122                 return -1;
1123
1124 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1125         os_memset(&sr, 0, sizeof(sr));
1126         sr.sr_flags = IEEE80211_IOC_SCAN_ACTIVE | IEEE80211_IOC_SCAN_ONCE |
1127                 IEEE80211_IOC_SCAN_NOJOIN;
1128         sr.sr_duration = IEEE80211_IOC_SCAN_FOREVER;
1129         if (params->num_ssids > 0) {
1130                 sr.sr_nssid = params->num_ssids;
1131 #if 0
1132                 /* Boundary check is done by upper layer */
1133                 if (sr.sr_nssid > IEEE80211_IOC_SCAN_MAX_SSID)
1134                         sr.sr_nssid = IEEE80211_IOC_SCAN_MAX_SSID;
1135 #endif
1136
1137                 /* NB: check scan cache first */
1138                 sr.sr_flags |= IEEE80211_IOC_SCAN_CHECK;
1139         }
1140         for (i = 0; i < sr.sr_nssid; i++) {
1141                 sr.sr_ssid[i].len = params->ssids[i].ssid_len;
1142                 os_memcpy(sr.sr_ssid[i].ssid, params->ssids[i].ssid,
1143                           sr.sr_ssid[i].len);
1144         }
1145
1146         /* NB: net80211 delivers a scan complete event so no need to poll */
1147         return set80211var(drv, IEEE80211_IOC_SCAN_REQ, &sr, sizeof(sr));
1148 #else /* IEEE80211_IOC_SCAN_MAX_SSID */
1149         /* set desired ssid before scan */
1150         if (bsd_set_ssid(drv->ifname, drv, params->ssids[0].ssid,
1151                          params->ssids[0].ssid_len) < 0)
1152                 return -1;
1153
1154         /* NB: net80211 delivers a scan complete event so no need to poll */
1155         return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1156 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1157 }
1158
1159 static void
1160 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1161 {
1162         struct bsd_driver_data *drv = sock_ctx;
1163         char buf[2048];
1164         struct if_announcemsghdr *ifan;
1165         struct if_msghdr *ifm;
1166         struct rt_msghdr *rtm;
1167         union wpa_event_data event;
1168         struct ieee80211_michael_event *mic;
1169         struct ieee80211_leave_event *leave;
1170         struct ieee80211_join_event *join;
1171         int n;
1172
1173         n = read(sock, buf, sizeof(buf));
1174         if (n < 0) {
1175                 if (errno != EINTR && errno != EAGAIN)
1176                         perror("read(PF_ROUTE)");
1177                 return;
1178         }
1179
1180         rtm = (struct rt_msghdr *) buf;
1181         if (rtm->rtm_version != RTM_VERSION) {
1182                 wpa_printf(MSG_DEBUG, "Routing message version %d not "
1183                         "understood\n", rtm->rtm_version);
1184                 return;
1185         }
1186         os_memset(&event, 0, sizeof(event));
1187         switch (rtm->rtm_type) {
1188         case RTM_IFANNOUNCE:
1189                 ifan = (struct if_announcemsghdr *) rtm;
1190                 if (ifan->ifan_index != drv->ifindex)
1191                         break;
1192                 strlcpy(event.interface_status.ifname, drv->ifname,
1193                         sizeof(event.interface_status.ifname));
1194                 switch (ifan->ifan_what) {
1195                 case IFAN_DEPARTURE:
1196                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1197                 default:
1198                         return;
1199                 }
1200                 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1201                            event.interface_status.ifname,
1202                            ifan->ifan_what == IFAN_DEPARTURE ?
1203                                 "removed" : "added");
1204                 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1205                 break;
1206         case RTM_IEEE80211:
1207                 ifan = (struct if_announcemsghdr *) rtm;
1208                 if (ifan->ifan_index != drv->ifindex)
1209                         break;
1210                 switch (ifan->ifan_what) {
1211                 case RTM_IEEE80211_ASSOC:
1212                 case RTM_IEEE80211_REASSOC:
1213                         if (drv->is_ap)
1214                                 break;
1215                         wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1216                         break;
1217                 case RTM_IEEE80211_DISASSOC:
1218                         if (drv->is_ap)
1219                                 break;
1220                         wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1221                         break;
1222                 case RTM_IEEE80211_SCAN:
1223                         if (drv->is_ap)
1224                                 break;
1225                         wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1226                         break;
1227                 case RTM_IEEE80211_LEAVE:
1228                         leave = (struct ieee80211_leave_event *) &ifan[1];
1229                         drv_event_disassoc(ctx, leave->iev_addr);
1230                         break;
1231                 case RTM_IEEE80211_JOIN:
1232 #ifdef RTM_IEEE80211_REJOIN
1233                 case RTM_IEEE80211_REJOIN:
1234 #endif
1235                         join = (struct ieee80211_join_event *) &ifan[1];
1236                         bsd_new_sta(drv, ctx, join->iev_addr);
1237                         break;
1238                 case RTM_IEEE80211_REPLAY:
1239                         /* ignore */
1240                         break;
1241                 case RTM_IEEE80211_MICHAEL:
1242                         mic = (struct ieee80211_michael_event *) &ifan[1];
1243                         wpa_printf(MSG_DEBUG,
1244                                 "Michael MIC failure wireless event: "
1245                                 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1246                                 MAC2STR(mic->iev_src));
1247
1248                         os_memset(&event, 0, sizeof(event));
1249                         event.michael_mic_failure.unicast =
1250                                 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1251                         wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1252                                 &event);
1253                         break;
1254                 }
1255                 break;
1256         case RTM_IFINFO:
1257                 ifm = (struct if_msghdr *) rtm;
1258                 if (ifm->ifm_index != drv->ifindex)
1259                         break;
1260                 if ((rtm->rtm_flags & RTF_UP) == 0) {
1261                         strlcpy(event.interface_status.ifname, drv->ifname,
1262                                 sizeof(event.interface_status.ifname));
1263                         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1264                         wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1265                                    event.interface_status.ifname);
1266                         wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1267                 }
1268                 break;
1269         }
1270 }
1271
1272 static void
1273 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1274                               struct ieee80211req_scan_result *sr)
1275 {
1276         struct wpa_scan_res *result, **tmp;
1277         size_t extra_len;
1278         u8 *pos;
1279
1280         extra_len = 2 + sr->isr_ssid_len;
1281         extra_len += 2 + sr->isr_nrates;
1282         extra_len += 3; /* ERP IE */
1283         extra_len += sr->isr_ie_len;
1284
1285         result = os_zalloc(sizeof(*result) + extra_len);
1286         if (result == NULL)
1287                 return;
1288         os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1289         result->freq = sr->isr_freq;
1290         result->beacon_int = sr->isr_intval;
1291         result->caps = sr->isr_capinfo;
1292         result->qual = sr->isr_rssi;
1293         result->noise = sr->isr_noise;
1294
1295         pos = (u8 *)(result + 1);
1296
1297         *pos++ = WLAN_EID_SSID;
1298         *pos++ = sr->isr_ssid_len;
1299         os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1300         pos += sr->isr_ssid_len;
1301
1302         /*
1303          * Deal all rates as supported rate.
1304          * Because net80211 doesn't report extended supported rate or not.
1305          */
1306         *pos++ = WLAN_EID_SUPP_RATES;
1307         *pos++ = sr->isr_nrates;
1308         os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1309         pos += sr->isr_nrates;
1310
1311         *pos++ = WLAN_EID_ERP_INFO;
1312         *pos++ = 1;
1313         *pos++ = sr->isr_erp;
1314
1315         os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1316         pos += sr->isr_ie_len;
1317
1318         result->ie_len = pos - (u8 *)(result + 1);
1319
1320         tmp = os_realloc(res->res,
1321                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1322         if (tmp == NULL) {
1323                 os_free(result);
1324                 return;
1325         }
1326         tmp[res->num++] = result;
1327         res->res = tmp;
1328 }
1329
1330 struct wpa_scan_results *
1331 wpa_driver_bsd_get_scan_results2(void *priv)
1332 {
1333         struct ieee80211req_scan_result *sr;
1334         struct wpa_scan_results *res;
1335         int len, rest;
1336         uint8_t buf[24*1024], *pos;
1337
1338         len = get80211var(priv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1339         if (len < 0)
1340                 return NULL;
1341
1342         res = os_zalloc(sizeof(*res));
1343         if (res == NULL)
1344                 return NULL;
1345
1346         pos = buf;
1347         rest = len;
1348         while (rest >= sizeof(struct ieee80211req_scan_result)) {
1349                 sr = (struct ieee80211req_scan_result *)pos;
1350                 wpa_driver_bsd_add_scan_entry(res, sr);
1351                 pos += sr->isr_len;
1352                 rest -= sr->isr_len;
1353         }
1354
1355         wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1356                    len, (unsigned long)res->num);
1357
1358         return res;
1359 }
1360
1361 static int wpa_driver_bsd_capa(struct bsd_driver_data *drv)
1362 {
1363         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1364         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1365                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1366                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1367                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1368         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1369                 WPA_DRIVER_CAPA_ENC_WEP104 |
1370                 WPA_DRIVER_CAPA_ENC_TKIP |
1371                 WPA_DRIVER_CAPA_ENC_CCMP;
1372         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1373                 WPA_DRIVER_AUTH_SHARED |
1374                 WPA_DRIVER_AUTH_LEAP;
1375 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1376         drv->capa.max_scan_ssids = IEEE80211_IOC_SCAN_MAX_SSID;
1377 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1378         drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1379
1380         return 0;
1381 }
1382
1383 static void *
1384 wpa_driver_bsd_init(void *ctx, const char *ifname)
1385 {
1386 #define GETPARAM(drv, param, v) \
1387         (((v) = get80211param(drv, param)) != -1)
1388         struct bsd_driver_data *drv;
1389
1390         drv = os_zalloc(sizeof(*drv));
1391         if (drv == NULL)
1392                 return NULL;
1393         /*
1394          * NB: We require the interface name be mappable to an index.
1395          *     This implies we do not support having wpa_supplicant
1396          *     wait for an interface to appear.  This seems ok; that
1397          *     doesn't belong here; it's really the job of devd.
1398          */
1399         drv->ifindex = if_nametoindex(ifname);
1400         if (drv->ifindex == 0) {
1401                 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1402                            __func__, ifname);
1403                 goto fail1;
1404         }
1405         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1406         if (drv->sock < 0)
1407                 goto fail1;
1408         drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1409         if (drv->route < 0)
1410                 goto fail;
1411         eloop_register_read_sock(drv->route,
1412                 wpa_driver_bsd_event_receive, ctx, drv);
1413
1414         drv->ctx = ctx;
1415         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1416
1417         /* Down interface during setup. */
1418         if (bsd_ctrl_iface(drv, 0) < 0)
1419                 goto fail;
1420
1421         if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1422                 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1423                         __func__, strerror(errno));
1424                 goto fail;
1425         }
1426         if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1427                 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1428                         __func__, strerror(errno));
1429                 goto fail;
1430         }
1431         if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1432                 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1433                         __func__, strerror(errno));
1434                 goto fail;
1435         }
1436
1437         if (wpa_driver_bsd_capa(drv))
1438                 goto fail;
1439
1440         return drv;
1441 fail:
1442         close(drv->sock);
1443 fail1:
1444         os_free(drv);
1445         return NULL;
1446 #undef GETPARAM
1447 }
1448
1449 static void
1450 wpa_driver_bsd_deinit(void *priv)
1451 {
1452         struct bsd_driver_data *drv = priv;
1453
1454         wpa_driver_bsd_set_wpa(drv, 0);
1455         eloop_unregister_read_sock(drv->route);
1456
1457         /* NB: mark interface down */
1458         bsd_ctrl_iface(drv, 0);
1459
1460         wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1461         if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1462                 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1463                         __func__);
1464
1465         if (drv->sock_xmit != NULL)
1466                 l2_packet_deinit(drv->sock_xmit);
1467         (void) close(drv->route);               /* ioctl socket */
1468         (void) close(drv->sock);                /* event socket */
1469         os_free(drv);
1470 }
1471
1472 static int
1473 wpa_driver_bsd_get_capa(void *priv, struct wpa_driver_capa *capa)
1474 {
1475         struct bsd_driver_data *drv = priv;
1476
1477         os_memcpy(capa, &drv->capa, sizeof(*capa));
1478         return 0;
1479 }
1480 #endif /* HOSTAPD */
1481
1482
1483 const struct wpa_driver_ops wpa_driver_bsd_ops = {
1484         .name                   = "bsd",
1485         .desc                   = "BSD 802.11 support",
1486 #ifdef HOSTAPD
1487         .hapd_init              = bsd_init,
1488         .hapd_deinit            = bsd_deinit,
1489         .set_privacy            = bsd_set_privacy,
1490         .get_seqnum             = bsd_get_seqnum,
1491         .flush                  = bsd_flush,
1492         .read_sta_data          = bsd_read_sta_driver_data,
1493         .sta_disassoc           = bsd_sta_disassoc,
1494         .sta_deauth             = bsd_sta_deauth,
1495         .set_freq               = hostapd_bsd_set_freq,
1496 #else /* HOSTAPD */
1497         .init                   = wpa_driver_bsd_init,
1498         .deinit                 = wpa_driver_bsd_deinit,
1499         .get_bssid              = wpa_driver_bsd_get_bssid,
1500         .get_ssid               = wpa_driver_bsd_get_ssid,
1501         .set_countermeasures    = wpa_driver_bsd_set_countermeasures,
1502         .scan2                  = wpa_driver_bsd_scan,
1503         .get_scan_results2      = wpa_driver_bsd_get_scan_results2,
1504         .deauthenticate         = wpa_driver_bsd_deauthenticate,
1505         .disassociate           = wpa_driver_bsd_disassociate,
1506         .associate              = wpa_driver_bsd_associate,
1507         .get_capa               = wpa_driver_bsd_get_capa,
1508 #endif /* HOSTAPD */
1509         .set_key                = bsd_set_key,
1510         .set_ieee8021x          = bsd_set_ieee8021x,
1511         .hapd_set_ssid          = bsd_set_ssid,
1512         .hapd_get_ssid          = bsd_get_ssid,
1513         .hapd_send_eapol        = bsd_send_eapol,
1514         .sta_set_flags          = bsd_set_sta_authorized,
1515         .set_generic_elem       = bsd_set_opt_ie,
1516 };