contrib/hostapd/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, 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->freq = params->freq;
 245         data->pairwise_suite = params->pairwise_suite;
 246         data->group_suite = params->group_suite;
 247         data->key_mgmt_suite = params->key_mgmt_suite;
 248         data->auth_alg = params->auth_alg;
 249         data->mode = params->mode;
 250         data->wpa_ie_len = params->wpa_ie_len;
 251         if (params->wpa_ie)
 252                 os_memcpy(data + 1, params->wpa_ie, params->wpa_ie_len);
 253         /* TODO: add support for other assoc parameters */
 254
 255         res = wpa_priv_cmd(drv, PRIVSEP_CMD_ASSOCIATE, data, buflen,
 256                            NULL, NULL);
 257         os_free(data);
 258
 259         return res;
 260 }
 261
 262
 263 static int wpa_driver_privsep_get_bssid(void *priv, u8 *bssid)
 264 {
 265         struct wpa_driver_privsep_data *drv = priv;
 266         int res;
 267         size_t len = ETH_ALEN;
 268
 269         res = wpa_priv_cmd(drv, PRIVSEP_CMD_GET_BSSID, NULL, 0, bssid, &len);
 270         if (res < 0 || len != ETH_ALEN)
 271                 return -1;
 272         return 0;
 273 }
 274
 275
 276 static int wpa_driver_privsep_get_ssid(void *priv, u8 *ssid)
 277 {
 278         struct wpa_driver_privsep_data *drv = priv;
 279         int res, ssid_len;
 280         u8 reply[sizeof(int) + 32];
 281         size_t len = sizeof(reply);
 282
 283         res = wpa_priv_cmd(drv, PRIVSEP_CMD_GET_SSID, NULL, 0, reply, &len);
 284         if (res < 0 || len < sizeof(int))
 285                 return -1;
 286         os_memcpy(&ssid_len, reply, sizeof(int));
 287         if (ssid_len < 0 || ssid_len > 32 || sizeof(int) + ssid_len > len) {
 288                 wpa_printf(MSG_DEBUG, "privsep: Invalid get SSID reply");
 289                 return -1;
 290         }
 291         os_memcpy(ssid, &reply[sizeof(int)], ssid_len);
 292         return ssid_len;
 293 }
 294
 295
 296 static int wpa_driver_privsep_deauthenticate(void *priv, const u8 *addr,
 297                                           int reason_code)
 298 {
 299         //struct wpa_driver_privsep_data *drv = priv;
 300         wpa_printf(MSG_DEBUG, "%s addr=" MACSTR " reason_code=%d",
 301                    __func__, MAC2STR(addr), reason_code);
 302         wpa_printf(MSG_DEBUG, "%s - TODO", __func__);
 303         return 0;
 304 }
 305
 306
 307 static void wpa_driver_privsep_event_assoc(void *ctx,
 308                                            enum wpa_event_type event,
 309                                            u8 *buf, size_t len)
 310 {
 311         union wpa_event_data data;
 312         int inc_data = 0;
 313         u8 *pos, *end;
 314         int ie_len;
 315
 316         os_memset(&data, 0, sizeof(data));
 317
 318         pos = buf;
 319         end = buf + len;
 320
 321         if (end - pos < (int) sizeof(int))
 322                 return;
 323         os_memcpy(&ie_len, pos, sizeof(int));
 324         pos += sizeof(int);
 325         if (ie_len < 0 || ie_len > end - pos)
 326                 return;
 327         if (ie_len) {
 328                 data.assoc_info.req_ies = pos;
 329                 data.assoc_info.req_ies_len = ie_len;
 330                 pos += ie_len;
 331                 inc_data = 1;
 332         }
 333
 334         wpa_supplicant_event(ctx, event, inc_data ? &data : NULL);
 335 }
 336
 337
 338 static void wpa_driver_privsep_event_interface_status(void *ctx, u8 *buf,
 339                                                       size_t len)
 340 {
 341         union wpa_event_data data;
 342         int ievent;
 343
 344         if (len < sizeof(int) ||
 345             len - sizeof(int) > sizeof(data.interface_status.ifname))
 346                 return;
 347
 348         os_memcpy(&ievent, buf, sizeof(int));
 349
 350         os_memset(&data, 0, sizeof(data));
 351         data.interface_status.ievent = ievent;
 352         os_memcpy(data.interface_status.ifname, buf + sizeof(int),
 353                   len - sizeof(int));
 354         wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &data);
 355 }
 356
 357
 358 static void wpa_driver_privsep_event_michael_mic_failure(
 359         void *ctx, u8 *buf, size_t len)
 360 {
 361         union wpa_event_data data;
 362
 363         if (len != sizeof(int))
 364                 return;
 365
 366         os_memset(&data, 0, sizeof(data));
 367         os_memcpy(&data.michael_mic_failure.unicast, buf, sizeof(int));
 368         wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 369 }
 370
 371
 372 static void wpa_driver_privsep_event_pmkid_candidate(void *ctx, u8 *buf,
 373                                                      size_t len)
 374 {
 375         union wpa_event_data data;
 376
 377         if (len != sizeof(struct pmkid_candidate))
 378                 return;
 379
 380         os_memset(&data, 0, sizeof(data));
 381         os_memcpy(&data.pmkid_candidate, buf, len);
 382         wpa_supplicant_event(ctx, EVENT_PMKID_CANDIDATE, &data);
 383 }
 384
 385
 386 static void wpa_driver_privsep_event_stkstart(void *ctx, u8 *buf, size_t len)
 387 {
 388         union wpa_event_data data;
 389
 390         if (len != ETH_ALEN)
 391                 return;
 392
 393         os_memset(&data, 0, sizeof(data));
 394         os_memcpy(data.stkstart.peer, buf, ETH_ALEN);
 395         wpa_supplicant_event(ctx, EVENT_STKSTART, &data);
 396 }
 397
 398
 399 static void wpa_driver_privsep_event_ft_response(void *ctx, u8 *buf,
 400                                                  size_t len)
 401 {
 402         union wpa_event_data data;
 403
 404         if (len < sizeof(int) + ETH_ALEN)
 405                 return;
 406
 407         os_memset(&data, 0, sizeof(data));
 408         os_memcpy(&data.ft_ies.ft_action, buf, sizeof(int));
 409         os_memcpy(data.ft_ies.target_ap, buf + sizeof(int), ETH_ALEN);
 410         data.ft_ies.ies = buf + sizeof(int) + ETH_ALEN;
 411         data.ft_ies.ies_len = len - sizeof(int) - ETH_ALEN;
 412         wpa_supplicant_event(ctx, EVENT_FT_RESPONSE, &data);
 413 }
 414
 415
 416 static void wpa_driver_privsep_event_rx_eapol(void *ctx, u8 *buf, size_t len)
 417 {
 418         if (len < ETH_ALEN)
 419                 return;
 420         drv_event_eapol_rx(ctx, buf, buf + ETH_ALEN, len - ETH_ALEN);
 421 }
 422
 423
 424 static void wpa_driver_privsep_receive(int sock, void *eloop_ctx,
 425                                        void *sock_ctx)
 426 {
 427         struct wpa_driver_privsep_data *drv = eloop_ctx;
 428         u8 *buf, *event_buf;
 429         size_t event_len;
 430         int res, event;
 431         enum privsep_event e;
 432         struct sockaddr_un from;
 433         socklen_t fromlen = sizeof(from);
 434         const size_t buflen = 2000;
 435
 436         buf = os_malloc(buflen);
 437         if (buf == NULL)
 438                 return;
 439         res = recvfrom(sock, buf, buflen, 0,
 440                        (struct sockaddr *) &from, &fromlen);
 441         if (res < 0) {
 442                 perror("recvfrom(priv_socket)");
 443                 os_free(buf);
 444                 return;
 445         }
 446
 447         wpa_printf(MSG_DEBUG, "privsep_driver: received %u bytes", res);
 448
 449         if (res < (int) sizeof(int)) {
 450                 wpa_printf(MSG_DEBUG, "Too short event message (len=%d)", res);
 451                 return;
 452         }
 453
 454         os_memcpy(&event, buf, sizeof(int));
 455         event_buf = &buf[sizeof(int)];
 456         event_len = res - sizeof(int);
 457         wpa_printf(MSG_DEBUG, "privsep: Event %d received (len=%lu)",
 458                    event, (unsigned long) event_len);
 459
 460         e = event;
 461         switch (e) {
 462         case PRIVSEP_EVENT_SCAN_RESULTS:
 463                 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
 464                 break;
 465         case PRIVSEP_EVENT_ASSOC:
 466                 wpa_driver_privsep_event_assoc(drv->ctx, EVENT_ASSOC,
 467                                                event_buf, event_len);
 468                 break;
 469         case PRIVSEP_EVENT_DISASSOC:
 470                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
 471                 break;
 472         case PRIVSEP_EVENT_ASSOCINFO:
 473                 wpa_driver_privsep_event_assoc(drv->ctx, EVENT_ASSOCINFO,
 474                                                event_buf, event_len);
 475                 break;
 476         case PRIVSEP_EVENT_MICHAEL_MIC_FAILURE:
 477                 wpa_driver_privsep_event_michael_mic_failure(
 478                         drv->ctx, event_buf, event_len);
 479                 break;
 480         case PRIVSEP_EVENT_INTERFACE_STATUS:
 481                 wpa_driver_privsep_event_interface_status(drv->ctx, event_buf,
 482                                                           event_len);
 483                 break;
 484         case PRIVSEP_EVENT_PMKID_CANDIDATE:
 485                 wpa_driver_privsep_event_pmkid_candidate(drv->ctx, event_buf,
 486                                                          event_len);
 487                 break;
 488         case PRIVSEP_EVENT_STKSTART:
 489                 wpa_driver_privsep_event_stkstart(drv->ctx, event_buf,
 490                                                   event_len);
 491                 break;
 492         case PRIVSEP_EVENT_FT_RESPONSE:
 493                 wpa_driver_privsep_event_ft_response(drv->ctx, event_buf,
 494                                                      event_len);
 495                 break;
 496         case PRIVSEP_EVENT_RX_EAPOL:
 497                 wpa_driver_privsep_event_rx_eapol(drv->ctx, event_buf,
 498                                                   event_len);
 499                 break;
 500         }
 501
 502         os_free(buf);
 503 }
 504
 505
 506 static void * wpa_driver_privsep_init(void *ctx, const char *ifname)
 507 {
 508         struct wpa_driver_privsep_data *drv;
 509
 510         drv = os_zalloc(sizeof(*drv));
 511         if (drv == NULL)
 512                 return NULL;
 513         drv->ctx = ctx;
 514         drv->priv_socket = -1;
 515         drv->cmd_socket = -1;
 516         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
 517
 518         return drv;
 519 }
 520
 521
 522 static void wpa_driver_privsep_deinit(void *priv)
 523 {
 524         struct wpa_driver_privsep_data *drv = priv;
 525
 526         if (drv->priv_socket >= 0) {
 527                 wpa_priv_reg_cmd(drv, PRIVSEP_CMD_UNREGISTER);
 528                 eloop_unregister_read_sock(drv->priv_socket);
 529                 close(drv->priv_socket);
 530         }
 531
 532         if (drv->own_socket_path) {
 533                 unlink(drv->own_socket_path);
 534                 os_free(drv->own_socket_path);
 535         }
 536
 537         if (drv->cmd_socket >= 0) {
 538                 eloop_unregister_read_sock(drv->cmd_socket);
 539                 close(drv->cmd_socket);
 540         }
 541
 542         if (drv->own_cmd_path) {
 543                 unlink(drv->own_cmd_path);
 544                 os_free(drv->own_cmd_path);
 545         }
 546
 547         os_free(drv);
 548 }
 549
 550
 551 static int wpa_driver_privsep_set_param(void *priv, const char *param)
 552 {
 553         struct wpa_driver_privsep_data *drv = priv;
 554         const char *pos;
 555         char *own_dir, *priv_dir;
 556         static unsigned int counter = 0;
 557         size_t len;
 558         struct sockaddr_un addr;
 559
 560         wpa_printf(MSG_DEBUG, "%s: param='%s'", __func__, param);
 561         if (param == NULL)
 562                 pos = NULL;
 563         else
 564                 pos = os_strstr(param, "own_dir=");
 565         if (pos) {
 566                 char *end;
 567                 own_dir = os_strdup(pos + 8);
 568                 if (own_dir == NULL)
 569                         return -1;
 570                 end = os_strchr(own_dir, ' ');
 571                 if (end)
 572                         *end = '\0';
 573         } else {
 574                 own_dir = os_strdup("/tmp");
 575                 if (own_dir == NULL)
 576                         return -1;
 577         }
 578
 579         if (param == NULL)
 580                 pos = NULL;
 581         else
 582                 pos = os_strstr(param, "priv_dir=");
 583         if (pos) {
 584                 char *end;
 585                 priv_dir = os_strdup(pos + 9);
 586                 if (priv_dir == NULL) {
 587                         os_free(own_dir);
 588                         return -1;
 589                 }
 590                 end = os_strchr(priv_dir, ' ');
 591                 if (end)
 592                         *end = '\0';
 593         } else {
 594                 priv_dir = os_strdup("/var/run/wpa_priv");
 595                 if (priv_dir == NULL) {
 596                         os_free(own_dir);
 597                         return -1;
 598                 }
 599         }
 600
 601         len = os_strlen(own_dir) + 50;
 602         drv->own_socket_path = os_malloc(len);
 603         if (drv->own_socket_path == NULL) {
 604                 os_free(priv_dir);
 605                 os_free(own_dir);
 606                 return -1;
 607         }
 608         os_snprintf(drv->own_socket_path, len, "%s/wpa_privsep-%d-%d",
 609                     own_dir, getpid(), counter++);
 610
 611         len = os_strlen(own_dir) + 50;
 612         drv->own_cmd_path = os_malloc(len);
 613         if (drv->own_cmd_path == NULL) {
 614                 os_free(drv->own_socket_path);
 615                 drv->own_socket_path = NULL;
 616                 os_free(priv_dir);
 617                 os_free(own_dir);
 618                 return -1;
 619         }
 620         os_snprintf(drv->own_cmd_path, len, "%s/wpa_privsep-%d-%d",
 621                     own_dir, getpid(), counter++);
 622
 623         os_free(own_dir);
 624
 625         drv->priv_addr.sun_family = AF_UNIX;
 626         os_snprintf(drv->priv_addr.sun_path, sizeof(drv->priv_addr.sun_path),
 627                     "%s/%s", priv_dir, drv->ifname);
 628         os_free(priv_dir);
 629
 630         drv->priv_socket = socket(PF_UNIX, SOCK_DGRAM, 0);
 631         if (drv->priv_socket < 0) {
 632                 perror("socket(PF_UNIX)");
 633                 os_free(drv->own_socket_path);
 634                 drv->own_socket_path = NULL;
 635                 return -1;
 636         }
 637
 638         os_memset(&addr, 0, sizeof(addr));
 639         addr.sun_family = AF_UNIX;
 640         os_strlcpy(addr.sun_path, drv->own_socket_path, sizeof(addr.sun_path));
 641         if (bind(drv->priv_socket, (struct sockaddr *) &addr, sizeof(addr)) <
 642             0) {
 643                 perror("privsep-set-params priv-sock: bind(PF_UNIX)");
 644                 close(drv->priv_socket);
 645                 drv->priv_socket = -1;
 646                 unlink(drv->own_socket_path);
 647                 os_free(drv->own_socket_path);
 648                 drv->own_socket_path = NULL;
 649                 return -1;
 650         }
 651
 652         eloop_register_read_sock(drv->priv_socket, wpa_driver_privsep_receive,
 653                                  drv, NULL);
 654
 655         drv->cmd_socket = socket(PF_UNIX, SOCK_DGRAM, 0);
 656         if (drv->cmd_socket < 0) {
 657                 perror("socket(PF_UNIX)");
 658                 os_free(drv->own_cmd_path);
 659                 drv->own_cmd_path = NULL;
 660                 return -1;
 661         }
 662
 663         os_memset(&addr, 0, sizeof(addr));
 664         addr.sun_family = AF_UNIX;
 665         os_strlcpy(addr.sun_path, drv->own_cmd_path, sizeof(addr.sun_path));
 666         if (bind(drv->cmd_socket, (struct sockaddr *) &addr, sizeof(addr)) < 0)
 667         {
 668                 perror("privsep-set-params cmd-sock: bind(PF_UNIX)");
 669                 close(drv->cmd_socket);
 670                 drv->cmd_socket = -1;
 671                 unlink(drv->own_cmd_path);
 672                 os_free(drv->own_cmd_path);
 673                 drv->own_cmd_path = NULL;
 674                 return -1;
 675         }
 676
 677         if (wpa_priv_reg_cmd(drv, PRIVSEP_CMD_REGISTER) < 0) {
 678                 wpa_printf(MSG_ERROR, "Failed to register with wpa_priv");
 679                 return -1;
 680         }
 681
 682         return 0;
 683 }
 684
 685
 686 static int wpa_driver_privsep_get_capa(void *priv,
 687                                        struct wpa_driver_capa *capa)
 688 {
 689         struct wpa_driver_privsep_data *drv = priv;
 690         int res;
 691         size_t len = sizeof(*capa);
 692
 693         res = wpa_priv_cmd(drv, PRIVSEP_CMD_GET_CAPA, NULL, 0, capa, &len);
 694         if (res < 0 || len != sizeof(*capa))
 695                 return -1;
 696         return 0;
 697 }
 698
 699
 700 static const u8 * wpa_driver_privsep_get_mac_addr(void *priv)
 701 {
 702         struct wpa_driver_privsep_data *drv = priv;
 703         wpa_printf(MSG_DEBUG, "%s", __func__);
 704         return drv->own_addr;
 705 }
 706
 707
 708 static int wpa_driver_privsep_set_country(void *priv, const char *alpha2)
 709 {
 710         struct wpa_driver_privsep_data *drv = priv;
 711         wpa_printf(MSG_DEBUG, "%s country='%s'", __func__, alpha2);
 712         return wpa_priv_cmd(drv, PRIVSEP_CMD_SET_COUNTRY, alpha2,
 713                             os_strlen(alpha2), NULL, NULL);
 714 }
 715
 716
 717 struct wpa_driver_ops wpa_driver_privsep_ops = {
 718         "privsep",
 719         "wpa_supplicant privilege separated driver",
 720         .get_bssid = wpa_driver_privsep_get_bssid,
 721         .get_ssid = wpa_driver_privsep_get_ssid,
 722         .set_key = wpa_driver_privsep_set_key,
 723         .init = wpa_driver_privsep_init,
 724         .deinit = wpa_driver_privsep_deinit,
 725         .set_param = wpa_driver_privsep_set_param,
 726         .scan2 = wpa_driver_privsep_scan,
 727         .deauthenticate = wpa_driver_privsep_deauthenticate,
 728         .associate = wpa_driver_privsep_associate,
 729         .get_capa = wpa_driver_privsep_get_capa,
 730         .get_mac_addr = wpa_driver_privsep_get_mac_addr,
 731         .get_scan_results2 = wpa_driver_privsep_get_scan_results2,
 732         .set_country = wpa_driver_privsep_set_country,
 733 };
 734
 735
 736 struct wpa_driver_ops *wpa_drivers[] =
 737 {
 738         &wpa_driver_privsep_ops,
 739         NULL
 740 };