src/drivers/driver_privsep.c

   1 /*
   2  * WPA Supplicant - privilege separated driver interface
   3  * Copyright (c) 2007-2009, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10 #include <sys/un.h>
  11
  12 #include "common.h"
  13 #include "driver.h"
  14 #include "eloop.h"
  15 #include "common/privsep_commands.h"
  16
  17
  18 struct wpa_driver_privsep_data {
  19         void *ctx;
  20         u8 own_addr[ETH_ALEN];
  21         int priv_socket;
  22         char *own_socket_path;
  23         int cmd_socket;
  24         char *own_cmd_path;
  25         struct sockaddr_un priv_addr;
  26         char ifname[16];
  27 };
  28
  29
  30 static int wpa_priv_reg_cmd(struct wpa_driver_privsep_data *drv, int cmd)
  31 {
  32         int res;
  33
  34         res = sendto(drv->priv_socket, &cmd, sizeof(cmd), 0,
  35                      (struct sockaddr *) &drv->priv_addr,
  36                      sizeof(drv->priv_addr));
  37         if (res < 0)
  38                 wpa_printf(MSG_ERROR, "sendto: %s", strerror(errno));
  39         return res < 0 ? -1 : 0;
  40 }
  41
  42
  43 static int wpa_priv_cmd(struct wpa_driver_privsep_data *drv, int cmd,
  44                         const void *data, size_t data_len,
  45                         void *reply, size_t *reply_len)
  46 {
  47         struct msghdr msg;
  48         struct iovec io[2];
  49
  50         io[0].iov_base = &cmd;
  51         io[0].iov_len = sizeof(cmd);
  52         io[1].iov_base = (u8 *) data;
  53         io[1].iov_len = data_len;
  54
  55         os_memset(&msg, 0, sizeof(msg));
  56         msg.msg_iov = io;
  57         msg.msg_iovlen = data ? 2 : 1;
  58         msg.msg_name = &drv->priv_addr;
  59         msg.msg_namelen = sizeof(drv->priv_addr);
  60
  61         if (sendmsg(drv->cmd_socket, &msg, 0) < 0) {
  62                 wpa_printf(MSG_ERROR, "sendmsg(cmd_socket): %s",
  63                            strerror(errno));
  64                 return -1;
  65         }
  66
  67         if (reply) {
  68                 fd_set rfds;
  69                 struct timeval tv;
  70                 int res;
  71
  72                 FD_ZERO(&rfds);
  73                 FD_SET(drv->cmd_socket, &rfds);
  74                 tv.tv_sec = 5;
  75                 tv.tv_usec = 0;
  76                 res = select(drv->cmd_socket + 1, &rfds, NULL, NULL, &tv);
  77                 if (res < 0 && errno != EINTR) {
  78                         wpa_printf(MSG_ERROR, "select: %s", strerror(errno));
  79                         return -1;
  80                 }
  81
  82                 if (FD_ISSET(drv->cmd_socket, &rfds)) {
  83                         res = recv(drv->cmd_socket, reply, *reply_len, 0);
  84                         if (res < 0) {
  85                                 wpa_printf(MSG_ERROR, "recv: %s",
  86                                            strerror(errno));
  87                                 return -1;
  88                         }
  89                         *reply_len = res;
  90                 } else {
  91                         wpa_printf(MSG_DEBUG, "PRIVSEP: Timeout while waiting "
  92                                    "for reply (cmd=%d)", cmd);
  93                         return -1;
  94                 }
  95         }
  96
  97         return 0;
  98 }
  99
 100
 101 static int wpa_driver_privsep_scan(void *priv,
 102                                    struct wpa_driver_scan_params *params)
 103 {
 104         struct wpa_driver_privsep_data *drv = priv;
 105         const u8 *ssid = params->ssids[0].ssid;
 106         size_t ssid_len = params->ssids[0].ssid_len;
 107         wpa_printf(MSG_DEBUG, "%s: priv=%p", __func__, priv);
 108         return wpa_priv_cmd(drv, PRIVSEP_CMD_SCAN, ssid, ssid_len,
 109                             NULL, NULL);
 110 }
 111
 112
 113 static struct wpa_scan_results *
 114 wpa_driver_privsep_get_scan_results2(void *priv)
 115 {
 116         struct wpa_driver_privsep_data *drv = priv;
 117         int res, num;
 118         u8 *buf, *pos, *end;
 119         size_t reply_len = 60000;
 120         struct wpa_scan_results *results;
 121         struct wpa_scan_res *r;
 122
 123         buf = os_malloc(reply_len);
 124         if (buf == NULL)
 125                 return NULL;
 126         res = wpa_priv_cmd(drv, PRIVSEP_CMD_GET_SCAN_RESULTS,
 127                            NULL, 0, buf, &reply_len);
 128         if (res < 0) {
 129                 os_free(buf);
 130                 return NULL;
 131         }
 132
 133         wpa_printf(MSG_DEBUG, "privsep: Received %lu bytes of scan results",
 134                    (unsigned long) reply_len);
 135         if (reply_len < sizeof(int)) {
 136                 wpa_printf(MSG_DEBUG, "privsep: Invalid scan result len %lu",
 137                            (unsigned long) reply_len);
 138                 os_free(buf);
 139                 return NULL;
 140         }
 141
 142         pos = buf;
 143         end = buf + reply_len;
 144         os_memcpy(&num, pos, sizeof(int));
 145         if (num < 0 || num > 1000) {
 146                 os_free(buf);
 147                 return NULL;
 148         }
 149         pos += sizeof(int);
 150
 151         results = os_zalloc(sizeof(*results));
 152         if (results == NULL) {
 153                 os_free(buf);
 154                 return NULL;
 155         }
 156
 157         results->res = os_calloc(num, sizeof(struct wpa_scan_res *));
 158         if (results->res == NULL) {
 159                 os_free(results);
 160                 os_free(buf);
 161                 return NULL;
 162         }
 163
 164         while (results->num < (size_t) num && pos + sizeof(int) < end) {
 165                 int len;
 166                 os_memcpy(&len, pos, sizeof(int));
 167                 pos += sizeof(int);
 168                 if (len < 0 || len > 10000 || pos + len > end)
 169                         break;
 170
 171                 r = os_malloc(len);
 172                 if (r == NULL)
 173                         break;
 174                 os_memcpy(r, pos, len);
 175                 pos += len;
 176                 if (sizeof(*r) + r->ie_len > (size_t) len) {
 177                         os_free(r);
 178                         break;
 179                 }
 180
 181                 results->res[results->num++] = r;
 182         }
 183
 184         os_free(buf);
 185         return results;
 186 }
 187
 188
 189 static int wpa_driver_privsep_set_key(const char *ifname, void *priv,
 190                                       enum wpa_alg alg, const u8 *addr,
 191                                       int key_idx, int set_tx,
 192                                       const u8 *seq, size_t seq_len,
 193                                       const u8 *key, size_t key_len)
 194 {
 195         struct wpa_driver_privsep_data *drv = priv;
 196         struct privsep_cmd_set_key cmd;
 197
 198         wpa_printf(MSG_DEBUG, "%s: priv=%p alg=%d key_idx=%d set_tx=%d",
 199                    __func__, priv, alg, key_idx, set_tx);
 200
 201         os_memset(&cmd, 0, sizeof(cmd));
 202         cmd.alg = alg;
 203         if (addr)
 204                 os_memcpy(cmd.addr, addr, ETH_ALEN);
 205         else
 206                 os_memset(cmd.addr, 0xff, ETH_ALEN);
 207         cmd.key_idx = key_idx;
 208         cmd.set_tx = set_tx;
 209         if (seq && seq_len > 0 && seq_len < sizeof(cmd.seq)) {
 210                 os_memcpy(cmd.seq, seq, seq_len);
 211                 cmd.seq_len = seq_len;
 212         }
 213         if (key && key_len > 0 && key_len < sizeof(cmd.key)) {
 214                 os_memcpy(cmd.key, key, key_len);
 215                 cmd.key_len = key_len;
 216         }
 217
 218         return wpa_priv_cmd(drv, PRIVSEP_CMD_SET_KEY, &cmd, sizeof(cmd),
 219                             NULL, NULL);
 220 }
 221
 222
 223 static int wpa_driver_privsep_associate(
 224         void *priv, struct wpa_driver_associate_params *params)
 225 {
 226         struct wpa_driver_privsep_data *drv = priv;
 227         struct privsep_cmd_associate *data;
 228         int res;
 229         size_t buflen;
 230
 231         wpa_printf(MSG_DEBUG, "%s: priv=%p freq=%d pairwise_suite=%d "
 232                    "group_suite=%d key_mgmt_suite=%d auth_alg=%d mode=%d",
 233                    __func__, priv, params->freq.freq, params->pairwise_suite,
 234                    params->group_suite, params->key_mgmt_suite,
 235                    params->auth_alg, params->mode);
 236
 237         buflen = sizeof(*data) + params->wpa_ie_len;
 238         data = os_zalloc(buflen);
 239         if (data == NULL)
 240                 return -1;
 241
 242         if (params->bssid)
 243                 os_memcpy(data->bssid, params->bssid, ETH_ALEN);
 244         os_memcpy(data->ssid, params->ssid, params->ssid_len);
 245         data->ssid_len = params->ssid_len;
 246         data->hwmode = params->freq.mode;
 247         data->freq = params->freq.freq;
 248         data->channel = params->freq.channel;
 249         data->pairwise_suite = params->pairwise_suite;
 250         data->group_suite = params->group_suite;
 251         data->key_mgmt_suite = params->key_mgmt_suite;
 252         data->auth_alg = params->auth_alg;
 253         data->mode = params->mode;
 254         data->wpa_ie_len = params->wpa_ie_len;
 255         if (params->wpa_ie)
 256                 os_memcpy(data + 1, params->wpa_ie, params->wpa_ie_len);
 257         /* TODO: add support for other assoc parameters */
 258
 259         res = wpa_priv_cmd(drv, PRIVSEP_CMD_ASSOCIATE, data, buflen,
 260                            NULL, NULL);
 261         os_free(data);
 262
 263         return res;
 264 }
 265
 266
 267 static int wpa_driver_privsep_get_bssid(void *priv, u8 *bssid)
 268 {
 269         struct wpa_driver_privsep_data *drv = priv;
 270         int res;
 271         size_t len = ETH_ALEN;
 272
 273         res = wpa_priv_cmd(drv, PRIVSEP_CMD_GET_BSSID, NULL, 0, bssid, &len);
 274         if (res < 0 || len != ETH_ALEN)
 275                 return -1;
 276         return 0;
 277 }
 278
 279
 280 static int wpa_driver_privsep_get_ssid(void *priv, u8 *ssid)
 281 {
 282         struct wpa_driver_privsep_data *drv = priv;
 283         int res, ssid_len;
 284         u8 reply[sizeof(int) + 32];
 285         size_t len = sizeof(reply);
 286
 287         res = wpa_priv_cmd(drv, PRIVSEP_CMD_GET_SSID, NULL, 0, reply, &len);
 288         if (res < 0 || len < sizeof(int))
 289                 return -1;
 290         os_memcpy(&ssid_len, reply, sizeof(int));
 291         if (ssid_len < 0 || ssid_len > 32 || sizeof(int) + ssid_len > len) {
 292                 wpa_printf(MSG_DEBUG, "privsep: Invalid get SSID reply");
 293                 return -1;
 294         }
 295         os_memcpy(ssid, &reply[sizeof(int)], ssid_len);
 296         return ssid_len;
 297 }
 298
 299
 300 static int wpa_driver_privsep_deauthenticate(void *priv, const u8 *addr,
 301                                           int reason_code)
 302 {
 303         //struct wpa_driver_privsep_data *drv = priv;
 304         wpa_printf(MSG_DEBUG, "%s addr=" MACSTR " reason_code=%d",
 305                    __func__, MAC2STR(addr), reason_code);
 306         wpa_printf(MSG_DEBUG, "%s - TODO", __func__);
 307         return 0;
 308 }
 309
 310
 311 static void wpa_driver_privsep_event_assoc(void *ctx,
 312                                            enum wpa_event_type event,
 313                                            u8 *buf, size_t len)
 314 {
 315         union wpa_event_data data;
 316         int inc_data = 0;
 317         u8 *pos, *end;
 318         int ie_len;
 319
 320         os_memset(&data, 0, sizeof(data));
 321
 322         pos = buf;
 323         end = buf + len;
 324
 325         if (end - pos < (int) sizeof(int))
 326                 return;
 327         os_memcpy(&ie_len, pos, sizeof(int));
 328         pos += sizeof(int);
 329         if (ie_len < 0 || ie_len > end - pos)
 330                 return;
 331         if (ie_len) {
 332                 data.assoc_info.req_ies = pos;
 333                 data.assoc_info.req_ies_len = ie_len;
 334                 pos += ie_len;
 335                 inc_data = 1;
 336         }
 337
 338         wpa_supplicant_event(ctx, event, inc_data ? &data : NULL);
 339 }
 340
 341
 342 static void wpa_driver_privsep_event_interface_status(void *ctx, u8 *buf,
 343                                                       size_t len)
 344 {
 345         union wpa_event_data data;
 346         int ievent;
 347
 348         if (len < sizeof(int) ||
 349             len - sizeof(int) > sizeof(data.interface_status.ifname))
 350                 return;
 351
 352         os_memcpy(&ievent, buf, sizeof(int));
 353
 354         os_memset(&data, 0, sizeof(data));
 355         data.interface_status.ievent = ievent;
 356         os_memcpy(data.interface_status.ifname, buf + sizeof(int),
 357                   len - sizeof(int));
 358         wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &data);
 359 }
 360
 361
 362 static void wpa_driver_privsep_event_michael_mic_failure(
 363         void *ctx, u8 *buf, size_t len)
 364 {
 365         union wpa_event_data data;
 366
 367         if (len != sizeof(int))
 368                 return;
 369
 370         os_memset(&data, 0, sizeof(data));
 371         os_memcpy(&data.michael_mic_failure.unicast, buf, sizeof(int));
 372         wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 373 }
 374
 375
 376 static void wpa_driver_privsep_event_pmkid_candidate(void *ctx, u8 *buf,
 377                                                      size_t len)
 378 {
 379         union wpa_event_data data;
 380
 381         if (len != sizeof(struct pmkid_candidate))
 382                 return;
 383
 384         os_memset(&data, 0, sizeof(data));
 385         os_memcpy(&data.pmkid_candidate, buf, len);
 386         wpa_supplicant_event(ctx, EVENT_PMKID_CANDIDATE, &data);
 387 }
 388
 389
 390 static void wpa_driver_privsep_event_stkstart(void *ctx, u8 *buf, size_t len)
 391 {
 392         union wpa_event_data data;
 393
 394         if (len != ETH_ALEN)
 395                 return;
 396
 397         os_memset(&data, 0, sizeof(data));
 398         os_memcpy(data.stkstart.peer, buf, ETH_ALEN);
 399         wpa_supplicant_event(ctx, EVENT_STKSTART, &data);
 400 }
 401
 402
 403 static void wpa_driver_privsep_event_ft_response(void *ctx, u8 *buf,
 404                                                  size_t len)
 405 {
 406         union wpa_event_data data;
 407
 408         if (len < sizeof(int) + ETH_ALEN)
 409                 return;
 410
 411         os_memset(&data, 0, sizeof(data));
 412         os_memcpy(&data.ft_ies.ft_action, buf, sizeof(int));
 413         os_memcpy(data.ft_ies.target_ap, buf + sizeof(int), ETH_ALEN);
 414         data.ft_ies.ies = buf + sizeof(int) + ETH_ALEN;
 415         data.ft_ies.ies_len = len - sizeof(int) - ETH_ALEN;
 416         wpa_supplicant_event(ctx, EVENT_FT_RESPONSE, &data);
 417 }
 418
 419
 420 static void wpa_driver_privsep_event_rx_eapol(void *ctx, u8 *buf, size_t len)
 421 {
 422         if (len < ETH_ALEN)
 423                 return;
 424         drv_event_eapol_rx(ctx, buf, buf + ETH_ALEN, len - ETH_ALEN);
 425 }
 426
 427
 428 static void wpa_driver_privsep_receive(int sock, void *eloop_ctx,
 429                                        void *sock_ctx)
 430 {
 431         struct wpa_driver_privsep_data *drv = eloop_ctx;
 432         u8 *buf, *event_buf;
 433         size_t event_len;
 434         int res, event;
 435         enum privsep_event e;
 436         struct sockaddr_un from;
 437         socklen_t fromlen = sizeof(from);
 438         const size_t buflen = 2000;
 439
 440         buf = os_malloc(buflen);
 441         if (buf == NULL)
 442                 return;
 443         res = recvfrom(sock, buf, buflen, 0,
 444                        (struct sockaddr *) &from, &fromlen);
 445         if (res < 0) {
 446                 wpa_printf(MSG_ERROR, "recvfrom(priv_socket): %s",
 447                            strerror(errno));
 448                 os_free(buf);
 449                 return;
 450         }
 451
 452         wpa_printf(MSG_DEBUG, "privsep_driver: received %u bytes", res);
 453
 454         if (res < (int) sizeof(int)) {
 455                 wpa_printf(MSG_DEBUG, "Too short event message (len=%d)", res);
 456                 return;
 457         }
 458
 459         os_memcpy(&event, buf, sizeof(int));
 460         event_buf = &buf[sizeof(int)];
 461         event_len = res - sizeof(int);
 462         wpa_printf(MSG_DEBUG, "privsep: Event %d received (len=%lu)",
 463                    event, (unsigned long) event_len);
 464
 465         e = event;
 466         switch (e) {
 467         case PRIVSEP_EVENT_SCAN_RESULTS:
 468                 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
 469                 break;
 470         case PRIVSEP_EVENT_ASSOC:
 471                 wpa_driver_privsep_event_assoc(drv->ctx, EVENT_ASSOC,
 472                                                event_buf, event_len);
 473                 break;
 474         case PRIVSEP_EVENT_DISASSOC:
 475                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
 476                 break;
 477         case PRIVSEP_EVENT_ASSOCINFO:
 478                 wpa_driver_privsep_event_assoc(drv->ctx, EVENT_ASSOCINFO,
 479                                                event_buf, event_len);
 480                 break;
 481         case PRIVSEP_EVENT_MICHAEL_MIC_FAILURE:
 482                 wpa_driver_privsep_event_michael_mic_failure(
 483                         drv->ctx, event_buf, event_len);
 484                 break;
 485         case PRIVSEP_EVENT_INTERFACE_STATUS:
 486                 wpa_driver_privsep_event_interface_status(drv->ctx, event_buf,
 487                                                           event_len);
 488                 break;
 489         case PRIVSEP_EVENT_PMKID_CANDIDATE:
 490                 wpa_driver_privsep_event_pmkid_candidate(drv->ctx, event_buf,
 491                                                          event_len);
 492                 break;
 493         case PRIVSEP_EVENT_STKSTART:
 494                 wpa_driver_privsep_event_stkstart(drv->ctx, event_buf,
 495                                                   event_len);
 496                 break;
 497         case PRIVSEP_EVENT_FT_RESPONSE:
 498                 wpa_driver_privsep_event_ft_response(drv->ctx, event_buf,
 499                                                      event_len);
 500                 break;
 501         case PRIVSEP_EVENT_RX_EAPOL:
 502                 wpa_driver_privsep_event_rx_eapol(drv->ctx, event_buf,
 503                                                   event_len);
 504                 break;
 505         }
 506
 507         os_free(buf);
 508 }
 509
 510
 511 static void * wpa_driver_privsep_init(void *ctx, const char *ifname)
 512 {
 513         struct wpa_driver_privsep_data *drv;
 514
 515         drv = os_zalloc(sizeof(*drv));
 516         if (drv == NULL)
 517                 return NULL;
 518         drv->ctx = ctx;
 519         drv->priv_socket = -1;
 520         drv->cmd_socket = -1;
 521         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
 522
 523         return drv;
 524 }
 525
 526
 527 static void wpa_driver_privsep_deinit(void *priv)
 528 {
 529         struct wpa_driver_privsep_data *drv = priv;
 530
 531         if (drv->priv_socket >= 0) {
 532                 wpa_priv_reg_cmd(drv, PRIVSEP_CMD_UNREGISTER);
 533                 eloop_unregister_read_sock(drv->priv_socket);
 534                 close(drv->priv_socket);
 535         }
 536
 537         if (drv->own_socket_path) {
 538                 unlink(drv->own_socket_path);
 539                 os_free(drv->own_socket_path);
 540         }
 541
 542         if (drv->cmd_socket >= 0) {
 543                 eloop_unregister_read_sock(drv->cmd_socket);
 544                 close(drv->cmd_socket);
 545         }
 546
 547         if (drv->own_cmd_path) {
 548                 unlink(drv->own_cmd_path);
 549                 os_free(drv->own_cmd_path);
 550         }
 551
 552         os_free(drv);
 553 }
 554
 555
 556 static int wpa_driver_privsep_set_param(void *priv, const char *param)
 557 {
 558         struct wpa_driver_privsep_data *drv = priv;
 559         const char *pos;
 560         char *own_dir, *priv_dir;
 561         static unsigned int counter = 0;
 562         size_t len;
 563         struct sockaddr_un addr;
 564
 565         wpa_printf(MSG_DEBUG, "%s: param='%s'", __func__, param);
 566         if (param == NULL)
 567                 pos = NULL;
 568         else
 569                 pos = os_strstr(param, "own_dir=");
 570         if (pos) {
 571                 char *end;
 572                 own_dir = os_strdup(pos + 8);
 573                 if (own_dir == NULL)
 574                         return -1;
 575                 end = os_strchr(own_dir, ' ');
 576                 if (end)
 577                         *end = '\0';
 578         } else {
 579                 own_dir = os_strdup("/tmp");
 580                 if (own_dir == NULL)
 581                         return -1;
 582         }
 583
 584         if (param == NULL)
 585                 pos = NULL;
 586         else
 587                 pos = os_strstr(param, "priv_dir=");
 588         if (pos) {
 589                 char *end;
 590                 priv_dir = os_strdup(pos + 9);
 591                 if (priv_dir == NULL) {
 592                         os_free(own_dir);
 593                         return -1;
 594                 }
 595                 end = os_strchr(priv_dir, ' ');
 596                 if (end)
 597                         *end = '\0';
 598         } else {
 599                 priv_dir = os_strdup("/var/run/wpa_priv");
 600                 if (priv_dir == NULL) {
 601                         os_free(own_dir);
 602                         return -1;
 603                 }
 604         }
 605
 606         len = os_strlen(own_dir) + 50;
 607         drv->own_socket_path = os_malloc(len);
 608         if (drv->own_socket_path == NULL) {
 609                 os_free(priv_dir);
 610                 os_free(own_dir);
 611                 return -1;
 612         }
 613         os_snprintf(drv->own_socket_path, len, "%s/wpa_privsep-%d-%d",
 614                     own_dir, getpid(), counter++);
 615
 616         len = os_strlen(own_dir) + 50;
 617         drv->own_cmd_path = os_malloc(len);
 618         if (drv->own_cmd_path == NULL) {
 619                 os_free(drv->own_socket_path);
 620                 drv->own_socket_path = NULL;
 621                 os_free(priv_dir);
 622                 os_free(own_dir);
 623                 return -1;
 624         }
 625         os_snprintf(drv->own_cmd_path, len, "%s/wpa_privsep-%d-%d",
 626                     own_dir, getpid(), counter++);
 627
 628         os_free(own_dir);
 629
 630         drv->priv_addr.sun_family = AF_UNIX;
 631         os_snprintf(drv->priv_addr.sun_path, sizeof(drv->priv_addr.sun_path),
 632                     "%s/%s", priv_dir, drv->ifname);
 633         os_free(priv_dir);
 634
 635         drv->priv_socket = socket(PF_UNIX, SOCK_DGRAM, 0);
 636         if (drv->priv_socket < 0) {
 637                 wpa_printf(MSG_ERROR, "socket(PF_UNIX): %s", strerror(errno));
 638                 os_free(drv->own_socket_path);
 639                 drv->own_socket_path = NULL;
 640                 return -1;
 641         }
 642
 643         os_memset(&addr, 0, sizeof(addr));
 644         addr.sun_family = AF_UNIX;
 645         os_strlcpy(addr.sun_path, drv->own_socket_path, sizeof(addr.sun_path));
 646         if (bind(drv->priv_socket, (struct sockaddr *) &addr, sizeof(addr)) <
 647             0) {
 648                 wpa_printf(MSG_ERROR,
 649                            "privsep-set-params priv-sock: bind(PF_UNIX): %s",
 650                            strerror(errno));
 651                 close(drv->priv_socket);
 652                 drv->priv_socket = -1;
 653                 unlink(drv->own_socket_path);
 654                 os_free(drv->own_socket_path);
 655                 drv->own_socket_path = NULL;
 656                 return -1;
 657         }
 658
 659         eloop_register_read_sock(drv->priv_socket, wpa_driver_privsep_receive,
 660                                  drv, NULL);
 661
 662         drv->cmd_socket = socket(PF_UNIX, SOCK_DGRAM, 0);
 663         if (drv->cmd_socket < 0) {
 664                 wpa_printf(MSG_ERROR, "socket(PF_UNIX): %s", strerror(errno));
 665                 os_free(drv->own_cmd_path);
 666                 drv->own_cmd_path = NULL;
 667                 return -1;
 668         }
 669
 670         os_memset(&addr, 0, sizeof(addr));
 671         addr.sun_family = AF_UNIX;
 672         os_strlcpy(addr.sun_path, drv->own_cmd_path, sizeof(addr.sun_path));
 673         if (bind(drv->cmd_socket, (struct sockaddr *) &addr, sizeof(addr)) < 0)
 674         {
 675                 wpa_printf(MSG_ERROR,
 676                            "privsep-set-params cmd-sock: bind(PF_UNIX): %s",
 677                            strerror(errno));
 678                 close(drv->cmd_socket);
 679                 drv->cmd_socket = -1;
 680                 unlink(drv->own_cmd_path);
 681                 os_free(drv->own_cmd_path);
 682                 drv->own_cmd_path = NULL;
 683                 return -1;
 684         }
 685
 686         if (wpa_priv_reg_cmd(drv, PRIVSEP_CMD_REGISTER) < 0) {
 687                 wpa_printf(MSG_ERROR, "Failed to register with wpa_priv");
 688                 return -1;
 689         }
 690
 691         return 0;
 692 }
 693
 694
 695 static int wpa_driver_privsep_get_capa(void *priv,
 696                                        struct wpa_driver_capa *capa)
 697 {
 698         struct wpa_driver_privsep_data *drv = priv;
 699         int res;
 700         size_t len = sizeof(*capa);
 701
 702         res = wpa_priv_cmd(drv, PRIVSEP_CMD_GET_CAPA, NULL, 0, capa, &len);
 703         if (res < 0 || len != sizeof(*capa))
 704                 return -1;
 705         return 0;
 706 }
 707
 708
 709 static const u8 * wpa_driver_privsep_get_mac_addr(void *priv)
 710 {
 711         struct wpa_driver_privsep_data *drv = priv;
 712         wpa_printf(MSG_DEBUG, "%s", __func__);
 713         return drv->own_addr;
 714 }
 715
 716
 717 static int wpa_driver_privsep_set_country(void *priv, const char *alpha2)
 718 {
 719         struct wpa_driver_privsep_data *drv = priv;
 720         wpa_printf(MSG_DEBUG, "%s country='%s'", __func__, alpha2);
 721         return wpa_priv_cmd(drv, PRIVSEP_CMD_SET_COUNTRY, alpha2,
 722                             os_strlen(alpha2), NULL, NULL);
 723 }
 724
 725
 726 struct wpa_driver_ops wpa_driver_privsep_ops = {
 727         "privsep",
 728         "wpa_supplicant privilege separated driver",
 729         .get_bssid = wpa_driver_privsep_get_bssid,
 730         .get_ssid = wpa_driver_privsep_get_ssid,
 731         .set_key = wpa_driver_privsep_set_key,
 732         .init = wpa_driver_privsep_init,
 733         .deinit = wpa_driver_privsep_deinit,
 734         .set_param = wpa_driver_privsep_set_param,
 735         .scan2 = wpa_driver_privsep_scan,
 736         .deauthenticate = wpa_driver_privsep_deauthenticate,
 737         .associate = wpa_driver_privsep_associate,
 738         .get_capa = wpa_driver_privsep_get_capa,
 739         .get_mac_addr = wpa_driver_privsep_get_mac_addr,
 740         .get_scan_results2 = wpa_driver_privsep_get_scan_results2,
 741         .set_country = wpa_driver_privsep_set_country,
 742 };
 743
 744
 745 struct wpa_driver_ops *wpa_drivers[] =
 746 {
 747         &wpa_driver_privsep_ops,
 748         NULL
 749 };