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