src/drivers/driver_wext.c

   1 /*
   2  * WPA Supplicant - driver interaction with generic Linux Wireless Extensions
   3  * Copyright (c) 2003-2007, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  *
  14  * This file implements a driver interface for the Linux Wireless Extensions.
  15  * When used with WE-18 or newer, this interface can be used as-is with number
  16  * of drivers. In addition to this, some of the common functions in this file
  17  * can be used by other driver interface implementations that use generic WE
  18  * ioctls, but require private ioctls for some of the functionality.
  19  */
  20
  21 #include "includes.h"
  22 #include <sys/ioctl.h>
  23 #include <net/if_arp.h>
  24
  25 #include "wireless_copy.h"
  26 #include "common.h"
  27 #include "driver.h"
  28 #include "eloop.h"
  29 #include "priv_netlink.h"
  30 #include "driver_wext.h"
  31 #include "ieee802_11_defs.h"
  32 #include "wpa_common.h"
  33
  34
  35 static int wpa_driver_wext_flush_pmkid(void *priv);
  36 static int wpa_driver_wext_get_range(void *priv);
  37 static int wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv);
  38 static void wpa_driver_wext_disconnect(struct wpa_driver_wext_data *drv);
  39 static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg);
  40
  41
  42 static int wpa_driver_wext_send_oper_ifla(struct wpa_driver_wext_data *drv,
  43                                           int linkmode, int operstate)
  44 {
  45         struct {
  46                 struct nlmsghdr hdr;
  47                 struct ifinfomsg ifinfo;
  48                 char opts[16];
  49         } req;
  50         struct rtattr *rta;
  51         static int nl_seq;
  52         ssize_t ret;
  53
  54         os_memset(&req, 0, sizeof(req));
  55
  56         req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
  57         req.hdr.nlmsg_type = RTM_SETLINK;
  58         req.hdr.nlmsg_flags = NLM_F_REQUEST;
  59         req.hdr.nlmsg_seq = ++nl_seq;
  60         req.hdr.nlmsg_pid = 0;
  61
  62         req.ifinfo.ifi_family = AF_UNSPEC;
  63         req.ifinfo.ifi_type = 0;
  64         req.ifinfo.ifi_index = drv->ifindex;
  65         req.ifinfo.ifi_flags = 0;
  66         req.ifinfo.ifi_change = 0;
  67
  68         if (linkmode != -1) {
  69                 rta = aliasing_hide_typecast(
  70                         ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)),
  71                         struct rtattr);
  72                 rta->rta_type = IFLA_LINKMODE;
  73                 rta->rta_len = RTA_LENGTH(sizeof(char));
  74                 *((char *) RTA_DATA(rta)) = linkmode;
  75                 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
  76                         RTA_LENGTH(sizeof(char));
  77         }
  78         if (operstate != -1) {
  79                 rta = (struct rtattr *)
  80                         ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
  81                 rta->rta_type = IFLA_OPERSTATE;
  82                 rta->rta_len = RTA_LENGTH(sizeof(char));
  83                 *((char *) RTA_DATA(rta)) = operstate;
  84                 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
  85                         RTA_LENGTH(sizeof(char));
  86         }
  87
  88         wpa_printf(MSG_DEBUG, "WEXT: Operstate: linkmode=%d, operstate=%d",
  89                    linkmode, operstate);
  90
  91         ret = send(drv->event_sock, &req, req.hdr.nlmsg_len, 0);
  92         if (ret < 0) {
  93                 wpa_printf(MSG_DEBUG, "WEXT: Sending operstate IFLA failed: "
  94                            "%s (assume operstate is not supported)",
  95                            strerror(errno));
  96         }
  97
  98         return ret < 0 ? -1 : 0;
  99 }
 100
 101
 102 int wpa_driver_wext_set_auth_param(struct wpa_driver_wext_data *drv,
 103                                    int idx, u32 value)
 104 {
 105         struct iwreq iwr;
 106         int ret = 0;
 107
 108         os_memset(&iwr, 0, sizeof(iwr));
 109         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 110         iwr.u.param.flags = idx & IW_AUTH_INDEX;
 111         iwr.u.param.value = value;
 112
 113         if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) {
 114                 if (errno != EOPNOTSUPP) {
 115                         wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d "
 116                                    "value 0x%x) failed: %s)",
 117                                    idx, value, strerror(errno));
 118                 }
 119                 ret = errno == EOPNOTSUPP ? -2 : -1;
 120         }
 121
 122         return ret;
 123 }
 124
 125
 126 /**
 127  * wpa_driver_wext_get_bssid - Get BSSID, SIOCGIWAP
 128  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 129  * @bssid: Buffer for BSSID
 130  * Returns: 0 on success, -1 on failure
 131  */
 132 int wpa_driver_wext_get_bssid(void *priv, u8 *bssid)
 133 {
 134         struct wpa_driver_wext_data *drv = priv;
 135         struct iwreq iwr;
 136         int ret = 0;
 137
 138         os_memset(&iwr, 0, sizeof(iwr));
 139         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 140
 141         if (ioctl(drv->ioctl_sock, SIOCGIWAP, &iwr) < 0) {
 142                 perror("ioctl[SIOCGIWAP]");
 143                 ret = -1;
 144         }
 145         os_memcpy(bssid, iwr.u.ap_addr.sa_data, ETH_ALEN);
 146
 147         return ret;
 148 }
 149
 150
 151 /**
 152  * wpa_driver_wext_set_bssid - Set BSSID, SIOCSIWAP
 153  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 154  * @bssid: BSSID
 155  * Returns: 0 on success, -1 on failure
 156  */
 157 int wpa_driver_wext_set_bssid(void *priv, const u8 *bssid)
 158 {
 159         struct wpa_driver_wext_data *drv = priv;
 160         struct iwreq iwr;
 161         int ret = 0;
 162
 163         os_memset(&iwr, 0, sizeof(iwr));
 164         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 165         iwr.u.ap_addr.sa_family = ARPHRD_ETHER;
 166         if (bssid)
 167                 os_memcpy(iwr.u.ap_addr.sa_data, bssid, ETH_ALEN);
 168         else
 169                 os_memset(iwr.u.ap_addr.sa_data, 0, ETH_ALEN);
 170
 171         if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr) < 0) {
 172                 perror("ioctl[SIOCSIWAP]");
 173                 ret = -1;
 174         }
 175
 176         return ret;
 177 }
 178
 179
 180 /**
 181  * wpa_driver_wext_get_ssid - Get SSID, SIOCGIWESSID
 182  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 183  * @ssid: Buffer for the SSID; must be at least 32 bytes long
 184  * Returns: SSID length on success, -1 on failure
 185  */
 186 int wpa_driver_wext_get_ssid(void *priv, u8 *ssid)
 187 {
 188         struct wpa_driver_wext_data *drv = priv;
 189         struct iwreq iwr;
 190         int ret = 0;
 191
 192         os_memset(&iwr, 0, sizeof(iwr));
 193         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 194         iwr.u.essid.pointer = (caddr_t) ssid;
 195         iwr.u.essid.length = 32;
 196
 197         if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
 198                 perror("ioctl[SIOCGIWESSID]");
 199                 ret = -1;
 200         } else {
 201                 ret = iwr.u.essid.length;
 202                 if (ret > 32)
 203                         ret = 32;
 204                 /* Some drivers include nul termination in the SSID, so let's
 205                  * remove it here before further processing. WE-21 changes this
 206                  * to explicitly require the length _not_ to include nul
 207                  * termination. */
 208                 if (ret > 0 && ssid[ret - 1] == '\0' &&
 209                     drv->we_version_compiled < 21)
 210                         ret--;
 211         }
 212
 213         return ret;
 214 }
 215
 216
 217 /**
 218  * wpa_driver_wext_set_ssid - Set SSID, SIOCSIWESSID
 219  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 220  * @ssid: SSID
 221  * @ssid_len: Length of SSID (0..32)
 222  * Returns: 0 on success, -1 on failure
 223  */
 224 int wpa_driver_wext_set_ssid(void *priv, const u8 *ssid, size_t ssid_len)
 225 {
 226         struct wpa_driver_wext_data *drv = priv;
 227         struct iwreq iwr;
 228         int ret = 0;
 229         char buf[33];
 230
 231         if (ssid_len > 32)
 232                 return -1;
 233
 234         os_memset(&iwr, 0, sizeof(iwr));
 235         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 236         /* flags: 1 = ESSID is active, 0 = not (promiscuous) */
 237         iwr.u.essid.flags = (ssid_len != 0);
 238         os_memset(buf, 0, sizeof(buf));
 239         os_memcpy(buf, ssid, ssid_len);
 240         iwr.u.essid.pointer = (caddr_t) buf;
 241         if (drv->we_version_compiled < 21) {
 242                 /* For historic reasons, set SSID length to include one extra
 243                  * character, C string nul termination, even though SSID is
 244                  * really an octet string that should not be presented as a C
 245                  * string. Some Linux drivers decrement the length by one and
 246                  * can thus end up missing the last octet of the SSID if the
 247                  * length is not incremented here. WE-21 changes this to
 248                  * explicitly require the length _not_ to include nul
 249                  * termination. */
 250                 if (ssid_len)
 251                         ssid_len++;
 252         }
 253         iwr.u.essid.length = ssid_len;
 254
 255         if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
 256                 perror("ioctl[SIOCSIWESSID]");
 257                 ret = -1;
 258         }
 259
 260         return ret;
 261 }
 262
 263
 264 /**
 265  * wpa_driver_wext_set_freq - Set frequency/channel, SIOCSIWFREQ
 266  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 267  * @freq: Frequency in MHz
 268  * Returns: 0 on success, -1 on failure
 269  */
 270 int wpa_driver_wext_set_freq(void *priv, int freq)
 271 {
 272         struct wpa_driver_wext_data *drv = priv;
 273         struct iwreq iwr;
 274         int ret = 0;
 275
 276         os_memset(&iwr, 0, sizeof(iwr));
 277         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 278         iwr.u.freq.m = freq * 100000;
 279         iwr.u.freq.e = 1;
 280
 281         if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
 282                 perror("ioctl[SIOCSIWFREQ]");
 283                 ret = -1;
 284         }
 285
 286         return ret;
 287 }
 288
 289
 290 static void
 291 wpa_driver_wext_event_wireless_custom(void *ctx, char *custom)
 292 {
 293         union wpa_event_data data;
 294
 295         wpa_printf(MSG_MSGDUMP, "WEXT: Custom wireless event: '%s'",
 296                    custom);
 297
 298         os_memset(&data, 0, sizeof(data));
 299         /* Host AP driver */
 300         if (os_strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
 301                 data.michael_mic_failure.unicast =
 302                         os_strstr(custom, " unicast ") != NULL;
 303                 /* TODO: parse parameters(?) */
 304                 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 305         } else if (os_strncmp(custom, "ASSOCINFO(ReqIEs=", 17) == 0) {
 306                 char *spos;
 307                 int bytes;
 308
 309                 spos = custom + 17;
 310
 311                 bytes = strspn(spos, "0123456789abcdefABCDEF");
 312                 if (!bytes || (bytes & 1))
 313                         return;
 314                 bytes /= 2;
 315
 316                 data.assoc_info.req_ies = os_malloc(bytes);
 317                 if (data.assoc_info.req_ies == NULL)
 318                         return;
 319
 320                 data.assoc_info.req_ies_len = bytes;
 321                 hexstr2bin(spos, data.assoc_info.req_ies, bytes);
 322
 323                 spos += bytes * 2;
 324
 325                 data.assoc_info.resp_ies = NULL;
 326                 data.assoc_info.resp_ies_len = 0;
 327
 328                 if (os_strncmp(spos, " RespIEs=", 9) == 0) {
 329                         spos += 9;
 330
 331                         bytes = strspn(spos, "0123456789abcdefABCDEF");
 332                         if (!bytes || (bytes & 1))
 333                                 goto done;
 334                         bytes /= 2;
 335
 336                         data.assoc_info.resp_ies = os_malloc(bytes);
 337                         if (data.assoc_info.resp_ies == NULL)
 338                                 goto done;
 339
 340                         data.assoc_info.resp_ies_len = bytes;
 341                         hexstr2bin(spos, data.assoc_info.resp_ies, bytes);
 342                 }
 343
 344                 wpa_supplicant_event(ctx, EVENT_ASSOCINFO, &data);
 345
 346         done:
 347                 os_free(data.assoc_info.resp_ies);
 348                 os_free(data.assoc_info.req_ies);
 349 #ifdef CONFIG_PEERKEY
 350         } else if (os_strncmp(custom, "STKSTART.request=", 17) == 0) {
 351                 if (hwaddr_aton(custom + 17, data.stkstart.peer)) {
 352                         wpa_printf(MSG_DEBUG, "WEXT: unrecognized "
 353                                    "STKSTART.request '%s'", custom + 17);
 354                         return;
 355                 }
 356                 wpa_supplicant_event(ctx, EVENT_STKSTART, &data);
 357 #endif /* CONFIG_PEERKEY */
 358         }
 359 }
 360
 361
 362 static int wpa_driver_wext_event_wireless_michaelmicfailure(
 363         void *ctx, const char *ev, size_t len)
 364 {
 365         const struct iw_michaelmicfailure *mic;
 366         union wpa_event_data data;
 367
 368         if (len < sizeof(*mic))
 369                 return -1;
 370
 371         mic = (const struct iw_michaelmicfailure *) ev;
 372
 373         wpa_printf(MSG_DEBUG, "Michael MIC failure wireless event: "
 374                    "flags=0x%x src_addr=" MACSTR, mic->flags,
 375                    MAC2STR(mic->src_addr.sa_data));
 376
 377         os_memset(&data, 0, sizeof(data));
 378         data.michael_mic_failure.unicast = !(mic->flags & IW_MICFAILURE_GROUP);
 379         wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 380
 381         return 0;
 382 }
 383
 384
 385 static int wpa_driver_wext_event_wireless_pmkidcand(
 386         struct wpa_driver_wext_data *drv, const char *ev, size_t len)
 387 {
 388         const struct iw_pmkid_cand *cand;
 389         union wpa_event_data data;
 390         const u8 *addr;
 391
 392         if (len < sizeof(*cand))
 393                 return -1;
 394
 395         cand = (const struct iw_pmkid_cand *) ev;
 396         addr = (const u8 *) cand->bssid.sa_data;
 397
 398         wpa_printf(MSG_DEBUG, "PMKID candidate wireless event: "
 399                    "flags=0x%x index=%d bssid=" MACSTR, cand->flags,
 400                    cand->index, MAC2STR(addr));
 401
 402         os_memset(&data, 0, sizeof(data));
 403         os_memcpy(data.pmkid_candidate.bssid, addr, ETH_ALEN);
 404         data.pmkid_candidate.index = cand->index;
 405         data.pmkid_candidate.preauth = cand->flags & IW_PMKID_CAND_PREAUTH;
 406         wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
 407
 408         return 0;
 409 }
 410
 411
 412 static int wpa_driver_wext_event_wireless_assocreqie(
 413         struct wpa_driver_wext_data *drv, const char *ev, int len)
 414 {
 415         if (len < 0)
 416                 return -1;
 417
 418         wpa_hexdump(MSG_DEBUG, "AssocReq IE wireless event", (const u8 *) ev,
 419                     len);
 420         os_free(drv->assoc_req_ies);
 421         drv->assoc_req_ies = os_malloc(len);
 422         if (drv->assoc_req_ies == NULL) {
 423                 drv->assoc_req_ies_len = 0;
 424                 return -1;
 425         }
 426         os_memcpy(drv->assoc_req_ies, ev, len);
 427         drv->assoc_req_ies_len = len;
 428
 429         return 0;
 430 }
 431
 432
 433 static int wpa_driver_wext_event_wireless_assocrespie(
 434         struct wpa_driver_wext_data *drv, const char *ev, int len)
 435 {
 436         if (len < 0)
 437                 return -1;
 438
 439         wpa_hexdump(MSG_DEBUG, "AssocResp IE wireless event", (const u8 *) ev,
 440                     len);
 441         os_free(drv->assoc_resp_ies);
 442         drv->assoc_resp_ies = os_malloc(len);
 443         if (drv->assoc_resp_ies == NULL) {
 444                 drv->assoc_resp_ies_len = 0;
 445                 return -1;
 446         }
 447         os_memcpy(drv->assoc_resp_ies, ev, len);
 448         drv->assoc_resp_ies_len = len;
 449
 450         return 0;
 451 }
 452
 453
 454 static void wpa_driver_wext_event_assoc_ies(struct wpa_driver_wext_data *drv)
 455 {
 456         union wpa_event_data data;
 457
 458         if (drv->assoc_req_ies == NULL && drv->assoc_resp_ies == NULL)
 459                 return;
 460
 461         os_memset(&data, 0, sizeof(data));
 462         if (drv->assoc_req_ies) {
 463                 data.assoc_info.req_ies = drv->assoc_req_ies;
 464                 drv->assoc_req_ies = NULL;
 465                 data.assoc_info.req_ies_len = drv->assoc_req_ies_len;
 466         }
 467         if (drv->assoc_resp_ies) {
 468                 data.assoc_info.resp_ies = drv->assoc_resp_ies;
 469                 drv->assoc_resp_ies = NULL;
 470                 data.assoc_info.resp_ies_len = drv->assoc_resp_ies_len;
 471         }
 472
 473         wpa_supplicant_event(drv->ctx, EVENT_ASSOCINFO, &data);
 474
 475         os_free(data.assoc_info.req_ies);
 476         os_free(data.assoc_info.resp_ies);
 477 }
 478
 479
 480 static void wpa_driver_wext_event_wireless(struct wpa_driver_wext_data *drv,
 481                                            void *ctx, char *data, int len)
 482 {
 483         struct iw_event iwe_buf, *iwe = &iwe_buf;
 484         char *pos, *end, *custom, *buf;
 485
 486         pos = data;
 487         end = data + len;
 488
 489         while (pos + IW_EV_LCP_LEN <= end) {
 490                 /* Event data may be unaligned, so make a local, aligned copy
 491                  * before processing. */
 492                 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
 493                 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
 494                            iwe->cmd, iwe->len);
 495                 if (iwe->len <= IW_EV_LCP_LEN)
 496                         return;
 497
 498                 custom = pos + IW_EV_POINT_LEN;
 499                 if (drv->we_version_compiled > 18 &&
 500                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
 501                      iwe->cmd == IWEVCUSTOM ||
 502                      iwe->cmd == IWEVASSOCREQIE ||
 503                      iwe->cmd == IWEVASSOCRESPIE ||
 504                      iwe->cmd == IWEVPMKIDCAND)) {
 505                         /* WE-19 removed the pointer from struct iw_point */
 506                         char *dpos = (char *) &iwe_buf.u.data.length;
 507                         int dlen = dpos - (char *) &iwe_buf;
 508                         os_memcpy(dpos, pos + IW_EV_LCP_LEN,
 509                                   sizeof(struct iw_event) - dlen);
 510                 } else {
 511                         os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
 512                         custom += IW_EV_POINT_OFF;
 513                 }
 514
 515                 switch (iwe->cmd) {
 516                 case SIOCGIWAP:
 517                         wpa_printf(MSG_DEBUG, "Wireless event: new AP: "
 518                                    MACSTR,
 519                                    MAC2STR((u8 *) iwe->u.ap_addr.sa_data));
 520                         if (is_zero_ether_addr(
 521                                     (const u8 *) iwe->u.ap_addr.sa_data) ||
 522                             os_memcmp(iwe->u.ap_addr.sa_data,
 523                                       "\x44\x44\x44\x44\x44\x44", ETH_ALEN) ==
 524                             0) {
 525                                 os_free(drv->assoc_req_ies);
 526                                 drv->assoc_req_ies = NULL;
 527                                 os_free(drv->assoc_resp_ies);
 528                                 drv->assoc_resp_ies = NULL;
 529                                 wpa_supplicant_event(ctx, EVENT_DISASSOC,
 530                                                      NULL);
 531
 532                         } else {
 533                                 wpa_driver_wext_event_assoc_ies(drv);
 534                                 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
 535                         }
 536                         break;
 537                 case IWEVMICHAELMICFAILURE:
 538                         if (custom + iwe->u.data.length > end) {
 539                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 540                                            "IWEVMICHAELMICFAILURE length");
 541                                 return;
 542                         }
 543                         wpa_driver_wext_event_wireless_michaelmicfailure(
 544                                 ctx, custom, iwe->u.data.length);
 545                         break;
 546                 case IWEVCUSTOM:
 547                         if (custom + iwe->u.data.length > end) {
 548                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 549                                            "IWEVCUSTOM length");
 550                                 return;
 551                         }
 552                         buf = os_malloc(iwe->u.data.length + 1);
 553                         if (buf == NULL)
 554                                 return;
 555                         os_memcpy(buf, custom, iwe->u.data.length);
 556                         buf[iwe->u.data.length] = '\0';
 557                         wpa_driver_wext_event_wireless_custom(ctx, buf);
 558                         os_free(buf);
 559                         break;
 560                 case SIOCGIWSCAN:
 561                         drv->scan_complete_events = 1;
 562                         eloop_cancel_timeout(wpa_driver_wext_scan_timeout,
 563                                              drv, ctx);
 564                         wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
 565                         break;
 566                 case IWEVASSOCREQIE:
 567                         if (custom + iwe->u.data.length > end) {
 568                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 569                                            "IWEVASSOCREQIE length");
 570                                 return;
 571                         }
 572                         wpa_driver_wext_event_wireless_assocreqie(
 573                                 drv, custom, iwe->u.data.length);
 574                         break;
 575                 case IWEVASSOCRESPIE:
 576                         if (custom + iwe->u.data.length > end) {
 577                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 578                                            "IWEVASSOCRESPIE length");
 579                                 return;
 580                         }
 581                         wpa_driver_wext_event_wireless_assocrespie(
 582                                 drv, custom, iwe->u.data.length);
 583                         break;
 584                 case IWEVPMKIDCAND:
 585                         if (custom + iwe->u.data.length > end) {
 586                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 587                                            "IWEVPMKIDCAND length");
 588                                 return;
 589                         }
 590                         wpa_driver_wext_event_wireless_pmkidcand(
 591                                 drv, custom, iwe->u.data.length);
 592                         break;
 593                 }
 594
 595                 pos += iwe->len;
 596         }
 597 }
 598
 599
 600 static void wpa_driver_wext_event_link(struct wpa_driver_wext_data *drv,
 601                                        void *ctx, char *buf, size_t len,
 602                                        int del)
 603 {
 604         union wpa_event_data event;
 605
 606         os_memset(&event, 0, sizeof(event));
 607         if (len > sizeof(event.interface_status.ifname))
 608                 len = sizeof(event.interface_status.ifname) - 1;
 609         os_memcpy(event.interface_status.ifname, buf, len);
 610         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 611                 EVENT_INTERFACE_ADDED;
 612
 613         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 614                    del ? "DEL" : "NEW",
 615                    event.interface_status.ifname,
 616                    del ? "removed" : "added");
 617
 618         if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
 619                 if (del)
 620                         drv->if_removed = 1;
 621                 else
 622                         drv->if_removed = 0;
 623         }
 624
 625         wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
 626 }
 627
 628
 629 static int wpa_driver_wext_own_ifname(struct wpa_driver_wext_data *drv,
 630                                       struct nlmsghdr *h)
 631 {
 632         struct ifinfomsg *ifi;
 633         int attrlen, nlmsg_len, rta_len;
 634         struct rtattr *attr;
 635
 636         ifi = NLMSG_DATA(h);
 637
 638         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 639
 640         attrlen = h->nlmsg_len - nlmsg_len;
 641         if (attrlen < 0)
 642                 return 0;
 643
 644         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
 645
 646         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 647         while (RTA_OK(attr, attrlen)) {
 648                 if (attr->rta_type == IFLA_IFNAME) {
 649                         if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
 650                             == 0)
 651                                 return 1;
 652                         else
 653                                 break;
 654                 }
 655                 attr = RTA_NEXT(attr, attrlen);
 656         }
 657
 658         return 0;
 659 }
 660
 661
 662 static int wpa_driver_wext_own_ifindex(struct wpa_driver_wext_data *drv,
 663                                        int ifindex, struct nlmsghdr *h)
 664 {
 665         if (drv->ifindex == ifindex || drv->ifindex2 == ifindex)
 666                 return 1;
 667
 668         if (drv->if_removed && wpa_driver_wext_own_ifname(drv, h)) {
 669                 drv->ifindex = if_nametoindex(drv->ifname);
 670                 wpa_printf(MSG_DEBUG, "WEXT: Update ifindex for a removed "
 671                            "interface");
 672                 wpa_driver_wext_finish_drv_init(drv);
 673                 return 1;
 674         }
 675
 676         return 0;
 677 }
 678
 679
 680 static void wpa_driver_wext_event_rtm_newlink(struct wpa_driver_wext_data *drv,
 681                                               void *ctx, struct nlmsghdr *h,
 682                                               size_t len)
 683 {
 684         struct ifinfomsg *ifi;
 685         int attrlen, nlmsg_len, rta_len;
 686         struct rtattr * attr;
 687
 688         if (len < sizeof(*ifi))
 689                 return;
 690
 691         ifi = NLMSG_DATA(h);
 692
 693         if (!wpa_driver_wext_own_ifindex(drv, ifi->ifi_index, h)) {
 694                 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
 695                            ifi->ifi_index);
 696                 return;
 697         }
 698
 699         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 700                    "(%s%s%s%s)",
 701                    drv->operstate, ifi->ifi_flags,
 702                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 703                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 704                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 705                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 706         /*
 707          * Some drivers send the association event before the operup event--in
 708          * this case, lifting operstate in wpa_driver_wext_set_operstate()
 709          * fails. This will hit us when wpa_supplicant does not need to do
 710          * IEEE 802.1X authentication
 711          */
 712         if (drv->operstate == 1 &&
 713             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 714             !(ifi->ifi_flags & IFF_RUNNING))
 715                 wpa_driver_wext_send_oper_ifla(drv, -1, IF_OPER_UP);
 716
 717         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 718
 719         attrlen = h->nlmsg_len - nlmsg_len;
 720         if (attrlen < 0)
 721                 return;
 722
 723         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
 724
 725         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 726         while (RTA_OK(attr, attrlen)) {
 727                 if (attr->rta_type == IFLA_WIRELESS) {
 728                         wpa_driver_wext_event_wireless(
 729                                 drv, ctx, ((char *) attr) + rta_len,
 730                                 attr->rta_len - rta_len);
 731                 } else if (attr->rta_type == IFLA_IFNAME) {
 732                         wpa_driver_wext_event_link(drv, ctx,
 733                                                    ((char *) attr) + rta_len,
 734                                                    attr->rta_len - rta_len, 0);
 735                 }
 736                 attr = RTA_NEXT(attr, attrlen);
 737         }
 738 }
 739
 740
 741 static void wpa_driver_wext_event_rtm_dellink(struct wpa_driver_wext_data *drv,
 742                                               void *ctx, struct nlmsghdr *h,
 743                                               size_t len)
 744 {
 745         struct ifinfomsg *ifi;
 746         int attrlen, nlmsg_len, rta_len;
 747         struct rtattr * attr;
 748
 749         if (len < sizeof(*ifi))
 750                 return;
 751
 752         ifi = NLMSG_DATA(h);
 753
 754         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 755
 756         attrlen = h->nlmsg_len - nlmsg_len;
 757         if (attrlen < 0)
 758                 return;
 759
 760         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
 761
 762         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 763         while (RTA_OK(attr, attrlen)) {
 764                 if (attr->rta_type == IFLA_IFNAME) {
 765                         wpa_driver_wext_event_link(drv,  ctx,
 766                                                    ((char *) attr) + rta_len,
 767                                                    attr->rta_len - rta_len, 1);
 768                 }
 769                 attr = RTA_NEXT(attr, attrlen);
 770         }
 771 }
 772
 773
 774 static void wpa_driver_wext_event_receive(int sock, void *eloop_ctx,
 775                                           void *sock_ctx)
 776 {
 777         char buf[8192];
 778         int left;
 779         struct sockaddr_nl from;
 780         socklen_t fromlen;
 781         struct nlmsghdr *h;
 782         int max_events = 10;
 783
 784 try_again:
 785         fromlen = sizeof(from);
 786         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
 787                         (struct sockaddr *) &from, &fromlen);
 788         if (left < 0) {
 789                 if (errno != EINTR && errno != EAGAIN)
 790                         perror("recvfrom(netlink)");
 791                 return;
 792         }
 793
 794         h = (struct nlmsghdr *) buf;
 795         while (left >= (int) sizeof(*h)) {
 796                 int len, plen;
 797
 798                 len = h->nlmsg_len;
 799                 plen = len - sizeof(*h);
 800                 if (len > left || plen < 0) {
 801                         wpa_printf(MSG_DEBUG, "Malformed netlink message: "
 802                                    "len=%d left=%d plen=%d",
 803                                    len, left, plen);
 804                         break;
 805                 }
 806
 807                 switch (h->nlmsg_type) {
 808                 case RTM_NEWLINK:
 809                         wpa_driver_wext_event_rtm_newlink(eloop_ctx, sock_ctx,
 810                                                           h, plen);
 811                         break;
 812                 case RTM_DELLINK:
 813                         wpa_driver_wext_event_rtm_dellink(eloop_ctx, sock_ctx,
 814                                                           h, plen);
 815                         break;
 816                 }
 817
 818                 len = NLMSG_ALIGN(len);
 819                 left -= len;
 820                 h = (struct nlmsghdr *) ((char *) h + len);
 821         }
 822
 823         if (left > 0) {
 824                 wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
 825                            "message", left);
 826         }
 827
 828         if (--max_events > 0) {
 829                 /*
 830                  * Try to receive all events in one eloop call in order to
 831                  * limit race condition on cases where AssocInfo event, Assoc
 832                  * event, and EAPOL frames are received more or less at the
 833                  * same time. We want to process the event messages first
 834                  * before starting EAPOL processing.
 835                  */
 836                 goto try_again;
 837         }
 838 }
 839
 840
 841 static int wpa_driver_wext_get_ifflags_ifname(struct wpa_driver_wext_data *drv,
 842                                               const char *ifname, int *flags)
 843 {
 844         struct ifreq ifr;
 845
 846         os_memset(&ifr, 0, sizeof(ifr));
 847         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 848         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
 849                 perror("ioctl[SIOCGIFFLAGS]");
 850                 return -1;
 851         }
 852         *flags = ifr.ifr_flags & 0xffff;
 853         return 0;
 854 }
 855
 856
 857 /**
 858  * wpa_driver_wext_get_ifflags - Get interface flags (SIOCGIFFLAGS)
 859  * @drv: driver_wext private data
 860  * @flags: Pointer to returned flags value
 861  * Returns: 0 on success, -1 on failure
 862  */
 863 int wpa_driver_wext_get_ifflags(struct wpa_driver_wext_data *drv, int *flags)
 864 {
 865         return wpa_driver_wext_get_ifflags_ifname(drv, drv->ifname, flags);
 866 }
 867
 868
 869 static int wpa_driver_wext_set_ifflags_ifname(struct wpa_driver_wext_data *drv,
 870                                               const char *ifname, int flags)
 871 {
 872         struct ifreq ifr;
 873
 874         os_memset(&ifr, 0, sizeof(ifr));
 875         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 876         ifr.ifr_flags = flags & 0xffff;
 877         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
 878                 perror("SIOCSIFFLAGS");
 879                 return -1;
 880         }
 881         return 0;
 882 }
 883
 884
 885 /**
 886  * wpa_driver_wext_set_ifflags - Set interface flags (SIOCSIFFLAGS)
 887  * @drv: driver_wext private data
 888  * @flags: New value for flags
 889  * Returns: 0 on success, -1 on failure
 890  */
 891 int wpa_driver_wext_set_ifflags(struct wpa_driver_wext_data *drv, int flags)
 892 {
 893         return wpa_driver_wext_set_ifflags_ifname(drv, drv->ifname, flags);
 894 }
 895
 896
 897 /**
 898  * wpa_driver_wext_init - Initialize WE driver interface
 899  * @ctx: context to be used when calling wpa_supplicant functions,
 900  * e.g., wpa_supplicant_event()
 901  * @ifname: interface name, e.g., wlan0
 902  * Returns: Pointer to private data, %NULL on failure
 903  */
 904 void * wpa_driver_wext_init(void *ctx, const char *ifname)
 905 {
 906         int s;
 907         struct sockaddr_nl local;
 908         struct wpa_driver_wext_data *drv;
 909
 910         drv = os_zalloc(sizeof(*drv));
 911         if (drv == NULL)
 912                 return NULL;
 913         drv->ctx = ctx;
 914         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
 915
 916         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
 917         if (drv->ioctl_sock < 0) {
 918                 perror("socket(PF_INET,SOCK_DGRAM)");
 919                 goto err1;
 920         }
 921
 922         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
 923         if (s < 0) {
 924                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
 925                 goto err2;
 926         }
 927         drv->event_sock = s;
 928
 929         os_memset(&local, 0, sizeof(local));
 930         local.nl_family = AF_NETLINK;
 931         local.nl_groups = RTMGRP_LINK;
 932         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
 933                 perror("bind(netlink)");
 934                 goto err3;
 935         }
 936
 937         eloop_register_read_sock(s, wpa_driver_wext_event_receive, drv, ctx);
 938
 939         drv->mlme_sock = -1;
 940
 941         if (wpa_driver_wext_finish_drv_init(drv) < 0)
 942                 goto err4;
 943
 944         wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED, 1);
 945
 946         return drv;
 947
 948 err4:
 949         eloop_unregister_read_sock(drv->event_sock);
 950 err3:
 951         close(drv->event_sock);
 952 err2:
 953         close(drv->ioctl_sock);
 954 err1:
 955         os_free(drv);
 956         return NULL;
 957 }
 958
 959
 960 static int wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv)
 961 {
 962         int flags;
 963
 964         if (wpa_driver_wext_get_ifflags(drv, &flags) != 0) {
 965                 wpa_printf(MSG_ERROR, "Could not get interface '%s' flags",
 966                            drv->ifname);
 967                 return -1;
 968         }
 969
 970         if (!(flags & IFF_UP)) {
 971                 if (wpa_driver_wext_set_ifflags(drv, flags | IFF_UP) != 0) {
 972                         wpa_printf(MSG_ERROR, "Could not set interface '%s' "
 973                                    "UP", drv->ifname);
 974                         return -1;
 975                 } else {
 976                         /*
 977                          * Wait some time to allow driver to initialize before
 978                          * starting configuring the driver. This seems to be
 979                          * needed at least some drivers that load firmware etc.
 980                          * when the interface is set up.
 981                          */
 982                         wpa_printf(MSG_DEBUG, "Interface %s set UP - waiting "
 983                                    "a second for the driver to complete "
 984                                    "initialization", drv->ifname);
 985                         sleep(1);
 986                 }
 987         }
 988
 989         /*
 990          * Make sure that the driver does not have any obsolete PMKID entries.
 991          */
 992         wpa_driver_wext_flush_pmkid(drv);
 993
 994         if (wpa_driver_wext_set_mode(drv, 0) < 0) {
 995                 wpa_printf(MSG_DEBUG, "Could not configure driver to use "
 996                            "managed mode");
 997                 /* Try to use it anyway */
 998         }
 999
1000         wpa_driver_wext_get_range(drv);
1001
1002         /*
1003          * Unlock the driver's BSSID and force to a random SSID to clear any
1004          * previous association the driver might have when the supplicant
1005          * starts up.
1006          */
1007         wpa_driver_wext_disconnect(drv);
1008
1009         drv->ifindex = if_nametoindex(drv->ifname);
1010
1011         if (os_strncmp(drv->ifname, "wlan", 4) == 0) {
1012                 /*
1013                  * Host AP driver may use both wlan# and wifi# interface in
1014                  * wireless events. Since some of the versions included WE-18
1015                  * support, let's add the alternative ifindex also from
1016                  * driver_wext.c for the time being. This may be removed at
1017                  * some point once it is believed that old versions of the
1018                  * driver are not in use anymore.
1019                  */
1020                 char ifname2[IFNAMSIZ + 1];
1021                 os_strlcpy(ifname2, drv->ifname, sizeof(ifname2));
1022                 os_memcpy(ifname2, "wifi", 4);
1023                 wpa_driver_wext_alternative_ifindex(drv, ifname2);
1024         }
1025
1026         wpa_driver_wext_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
1027
1028         return 0;
1029 }
1030
1031
1032 /**
1033  * wpa_driver_wext_deinit - Deinitialize WE driver interface
1034  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1035  *
1036  * Shut down driver interface and processing of driver events. Free
1037  * private data buffer if one was allocated in wpa_driver_wext_init().
1038  */
1039 void wpa_driver_wext_deinit(void *priv)
1040 {
1041         struct wpa_driver_wext_data *drv = priv;
1042         int flags;
1043
1044         wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED, 0);
1045
1046         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
1047
1048         /*
1049          * Clear possibly configured driver parameters in order to make it
1050          * easier to use the driver after wpa_supplicant has been terminated.
1051          */
1052         wpa_driver_wext_disconnect(drv);
1053
1054         wpa_driver_wext_send_oper_ifla(priv, 0, IF_OPER_UP);
1055
1056         eloop_unregister_read_sock(drv->event_sock);
1057         if (drv->mlme_sock >= 0)
1058                 eloop_unregister_read_sock(drv->mlme_sock);
1059
1060         if (wpa_driver_wext_get_ifflags(drv, &flags) == 0)
1061                 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
1062
1063         close(drv->event_sock);
1064         close(drv->ioctl_sock);
1065         if (drv->mlme_sock >= 0)
1066                 close(drv->mlme_sock);
1067         os_free(drv->assoc_req_ies);
1068         os_free(drv->assoc_resp_ies);
1069         os_free(drv);
1070 }
1071
1072
1073 /**
1074  * wpa_driver_wext_scan_timeout - Scan timeout to report scan completion
1075  * @eloop_ctx: Unused
1076  * @timeout_ctx: ctx argument given to wpa_driver_wext_init()
1077  *
1078  * This function can be used as registered timeout when starting a scan to
1079  * generate a scan completed event if the driver does not report this.
1080  */
1081 void wpa_driver_wext_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1082 {
1083         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1084         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1085 }
1086
1087
1088 /**
1089  * wpa_driver_wext_scan - Request the driver to initiate scan
1090  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1091  * @param: Scan parameters (specific SSID to scan for (ProbeReq), etc.)
1092  * Returns: 0 on success, -1 on failure
1093  */
1094 int wpa_driver_wext_scan(void *priv, struct wpa_driver_scan_params *params)
1095 {
1096         struct wpa_driver_wext_data *drv = priv;
1097         struct iwreq iwr;
1098         int ret = 0, timeout;
1099         struct iw_scan_req req;
1100         const u8 *ssid = params->ssids[0].ssid;
1101         size_t ssid_len = params->ssids[0].ssid_len;
1102
1103         if (ssid_len > IW_ESSID_MAX_SIZE) {
1104                 wpa_printf(MSG_DEBUG, "%s: too long SSID (%lu)",
1105                            __FUNCTION__, (unsigned long) ssid_len);
1106                 return -1;
1107         }
1108
1109         os_memset(&iwr, 0, sizeof(iwr));
1110         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1111
1112         if (ssid && ssid_len) {
1113                 os_memset(&req, 0, sizeof(req));
1114                 req.essid_len = ssid_len;
1115                 req.bssid.sa_family = ARPHRD_ETHER;
1116                 os_memset(req.bssid.sa_data, 0xff, ETH_ALEN);
1117                 os_memcpy(req.essid, ssid, ssid_len);
1118                 iwr.u.data.pointer = (caddr_t) &req;
1119                 iwr.u.data.length = sizeof(req);
1120                 iwr.u.data.flags = IW_SCAN_THIS_ESSID;
1121         }
1122
1123         if (ioctl(drv->ioctl_sock, SIOCSIWSCAN, &iwr) < 0) {
1124                 perror("ioctl[SIOCSIWSCAN]");
1125                 ret = -1;
1126         }
1127
1128         /* Not all drivers generate "scan completed" wireless event, so try to
1129          * read results after a timeout. */
1130         timeout = 5;
1131         if (drv->scan_complete_events) {
1132                 /*
1133                  * The driver seems to deliver SIOCGIWSCAN events to notify
1134                  * when scan is complete, so use longer timeout to avoid race
1135                  * conditions with scanning and following association request.
1136                  */
1137                 timeout = 30;
1138         }
1139         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1140                    "seconds", ret, timeout);
1141         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
1142         eloop_register_timeout(timeout, 0, wpa_driver_wext_scan_timeout, drv,
1143                                drv->ctx);
1144
1145         return ret;
1146 }
1147
1148
1149 static u8 * wpa_driver_wext_giwscan(struct wpa_driver_wext_data *drv,
1150                                     size_t *len)
1151 {
1152         struct iwreq iwr;
1153         u8 *res_buf;
1154         size_t res_buf_len;
1155
1156         res_buf_len = IW_SCAN_MAX_DATA;
1157         for (;;) {
1158                 res_buf = os_malloc(res_buf_len);
1159                 if (res_buf == NULL)
1160                         return NULL;
1161                 os_memset(&iwr, 0, sizeof(iwr));
1162                 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1163                 iwr.u.data.pointer = res_buf;
1164                 iwr.u.data.length = res_buf_len;
1165
1166                 if (ioctl(drv->ioctl_sock, SIOCGIWSCAN, &iwr) == 0)
1167                         break;
1168
1169                 if (errno == E2BIG && res_buf_len < 65535) {
1170                         os_free(res_buf);
1171                         res_buf = NULL;
1172                         res_buf_len *= 2;
1173                         if (res_buf_len > 65535)
1174                                 res_buf_len = 65535; /* 16-bit length field */
1175                         wpa_printf(MSG_DEBUG, "Scan results did not fit - "
1176                                    "trying larger buffer (%lu bytes)",
1177                                    (unsigned long) res_buf_len);
1178                 } else {
1179                         perror("ioctl[SIOCGIWSCAN]");
1180                         os_free(res_buf);
1181                         return NULL;
1182                 }
1183         }
1184
1185         if (iwr.u.data.length > res_buf_len) {
1186                 os_free(res_buf);
1187                 return NULL;
1188         }
1189         *len = iwr.u.data.length;
1190
1191         return res_buf;
1192 }
1193
1194
1195 /*
1196  * Data structure for collecting WEXT scan results. This is needed to allow
1197  * the various methods of reporting IEs to be combined into a single IE buffer.
1198  */
1199 struct wext_scan_data {
1200         struct wpa_scan_res res;
1201         u8 *ie;
1202         size_t ie_len;
1203         u8 ssid[32];
1204         size_t ssid_len;
1205         int maxrate;
1206 };
1207
1208
1209 static void wext_get_scan_mode(struct iw_event *iwe,
1210                                struct wext_scan_data *res)
1211 {
1212         if (iwe->u.mode == IW_MODE_ADHOC)
1213                 res->res.caps |= IEEE80211_CAP_IBSS;
1214         else if (iwe->u.mode == IW_MODE_MASTER || iwe->u.mode == IW_MODE_INFRA)
1215                 res->res.caps |= IEEE80211_CAP_ESS;
1216 }
1217
1218
1219 static void wext_get_scan_ssid(struct iw_event *iwe,
1220                                struct wext_scan_data *res, char *custom,
1221                                char *end)
1222 {
1223         int ssid_len = iwe->u.essid.length;
1224         if (custom + ssid_len > end)
1225                 return;
1226         if (iwe->u.essid.flags &&
1227             ssid_len > 0 &&
1228             ssid_len <= IW_ESSID_MAX_SIZE) {
1229                 os_memcpy(res->ssid, custom, ssid_len);
1230                 res->ssid_len = ssid_len;
1231         }
1232 }
1233
1234
1235 static void wext_get_scan_freq(struct iw_event *iwe,
1236                                struct wext_scan_data *res)
1237 {
1238         int divi = 1000000, i;
1239
1240         if (iwe->u.freq.e == 0) {
1241                 /*
1242                  * Some drivers do not report frequency, but a channel.
1243                  * Try to map this to frequency by assuming they are using
1244                  * IEEE 802.11b/g.  But don't overwrite a previously parsed
1245                  * frequency if the driver sends both frequency and channel,
1246                  * since the driver may be sending an A-band channel that we
1247                  * don't handle here.
1248                  */
1249
1250                 if (res->res.freq)
1251                         return;
1252
1253                 if (iwe->u.freq.m >= 1 && iwe->u.freq.m <= 13) {
1254                         res->res.freq = 2407 + 5 * iwe->u.freq.m;
1255                         return;
1256                 } else if (iwe->u.freq.m == 14) {
1257                         res->res.freq = 2484;
1258                         return;
1259                 }
1260         }
1261
1262         if (iwe->u.freq.e > 6) {
1263                 wpa_printf(MSG_DEBUG, "Invalid freq in scan results (BSSID="
1264                            MACSTR " m=%d e=%d)",
1265                            MAC2STR(res->res.bssid), iwe->u.freq.m,
1266                            iwe->u.freq.e);
1267                 return;
1268         }
1269
1270         for (i = 0; i < iwe->u.freq.e; i++)
1271                 divi /= 10;
1272         res->res.freq = iwe->u.freq.m / divi;
1273 }
1274
1275
1276 static void wext_get_scan_qual(struct iw_event *iwe,
1277                                struct wext_scan_data *res)
1278 {
1279         res->res.qual = iwe->u.qual.qual;
1280         res->res.noise = iwe->u.qual.noise;
1281         res->res.level = iwe->u.qual.level;
1282         if (iwe->u.qual.updated & IW_QUAL_QUAL_INVALID)
1283                 res->res.flags |= WPA_SCAN_QUAL_INVALID;
1284         if (iwe->u.qual.updated & IW_QUAL_LEVEL_INVALID)
1285                 res->res.flags |= WPA_SCAN_LEVEL_INVALID;
1286         if (iwe->u.qual.updated & IW_QUAL_NOISE_INVALID)
1287                 res->res.flags |= WPA_SCAN_NOISE_INVALID;
1288         if (iwe->u.qual.updated & IW_QUAL_DBM)
1289                 res->res.flags |= WPA_SCAN_LEVEL_DBM;
1290 }
1291
1292
1293 static void wext_get_scan_encode(struct iw_event *iwe,
1294                                  struct wext_scan_data *res)
1295 {
1296         if (!(iwe->u.data.flags & IW_ENCODE_DISABLED))
1297                 res->res.caps |= IEEE80211_CAP_PRIVACY;
1298 }
1299
1300
1301 static void wext_get_scan_rate(struct iw_event *iwe,
1302                                struct wext_scan_data *res, char *pos,
1303                                char *end)
1304 {
1305         int maxrate;
1306         char *custom = pos + IW_EV_LCP_LEN;
1307         struct iw_param p;
1308         size_t clen;
1309
1310         clen = iwe->len;
1311         if (custom + clen > end)
1312                 return;
1313         maxrate = 0;
1314         while (((ssize_t) clen) >= (ssize_t) sizeof(struct iw_param)) {
1315                 /* Note: may be misaligned, make a local, aligned copy */
1316                 os_memcpy(&p, custom, sizeof(struct iw_param));
1317                 if (p.value > maxrate)
1318                         maxrate = p.value;
1319                 clen -= sizeof(struct iw_param);
1320                 custom += sizeof(struct iw_param);
1321         }
1322
1323         /* Convert the maxrate from WE-style (b/s units) to
1324          * 802.11 rates (500000 b/s units).
1325          */
1326         res->maxrate = maxrate / 500000;
1327 }
1328
1329
1330 static void wext_get_scan_iwevgenie(struct iw_event *iwe,
1331                                     struct wext_scan_data *res, char *custom,
1332                                     char *end)
1333 {
1334         char *genie, *gpos, *gend;
1335         u8 *tmp;
1336
1337         if (iwe->u.data.length == 0)
1338                 return;
1339
1340         gpos = genie = custom;
1341         gend = genie + iwe->u.data.length;
1342         if (gend > end) {
1343                 wpa_printf(MSG_INFO, "IWEVGENIE overflow");
1344                 return;
1345         }
1346
1347         tmp = os_realloc(res->ie, res->ie_len + gend - gpos);
1348         if (tmp == NULL)
1349                 return;
1350         os_memcpy(tmp + res->ie_len, gpos, gend - gpos);
1351         res->ie = tmp;
1352         res->ie_len += gend - gpos;
1353 }
1354
1355
1356 static void wext_get_scan_custom(struct iw_event *iwe,
1357                                  struct wext_scan_data *res, char *custom,
1358                                  char *end)
1359 {
1360         size_t clen;
1361         u8 *tmp;
1362
1363         clen = iwe->u.data.length;
1364         if (custom + clen > end)
1365                 return;
1366
1367         if (clen > 7 && os_strncmp(custom, "wpa_ie=", 7) == 0) {
1368                 char *spos;
1369                 int bytes;
1370                 spos = custom + 7;
1371                 bytes = custom + clen - spos;
1372                 if (bytes & 1 || bytes == 0)
1373                         return;
1374                 bytes /= 2;
1375                 tmp = os_realloc(res->ie, res->ie_len + bytes);
1376                 if (tmp == NULL)
1377                         return;
1378                 hexstr2bin(spos, tmp + res->ie_len, bytes);
1379                 res->ie = tmp;
1380                 res->ie_len += bytes;
1381         } else if (clen > 7 && os_strncmp(custom, "rsn_ie=", 7) == 0) {
1382                 char *spos;
1383                 int bytes;
1384                 spos = custom + 7;
1385                 bytes = custom + clen - spos;
1386                 if (bytes & 1 || bytes == 0)
1387                         return;
1388                 bytes /= 2;
1389                 tmp = os_realloc(res->ie, res->ie_len + bytes);
1390                 if (tmp == NULL)
1391                         return;
1392                 hexstr2bin(spos, tmp + res->ie_len, bytes);
1393                 res->ie = tmp;
1394                 res->ie_len += bytes;
1395         } else if (clen > 4 && os_strncmp(custom, "tsf=", 4) == 0) {
1396                 char *spos;
1397                 int bytes;
1398                 u8 bin[8];
1399                 spos = custom + 4;
1400                 bytes = custom + clen - spos;
1401                 if (bytes != 16) {
1402                         wpa_printf(MSG_INFO, "Invalid TSF length (%d)", bytes);
1403                         return;
1404                 }
1405                 bytes /= 2;
1406                 hexstr2bin(spos, bin, bytes);
1407                 res->res.tsf += WPA_GET_BE64(bin);
1408         }
1409 }
1410
1411
1412 static int wext_19_iw_point(struct wpa_driver_wext_data *drv, u16 cmd)
1413 {
1414         return drv->we_version_compiled > 18 &&
1415                 (cmd == SIOCGIWESSID || cmd == SIOCGIWENCODE ||
1416                  cmd == IWEVGENIE || cmd == IWEVCUSTOM);
1417 }
1418
1419
1420 static void wpa_driver_wext_add_scan_entry(struct wpa_scan_results *res,
1421                                            struct wext_scan_data *data)
1422 {
1423         struct wpa_scan_res **tmp;
1424         struct wpa_scan_res *r;
1425         size_t extra_len;
1426         u8 *pos, *end, *ssid_ie = NULL, *rate_ie = NULL;
1427
1428         /* Figure out whether we need to fake any IEs */
1429         pos = data->ie;
1430         end = pos + data->ie_len;
1431         while (pos && pos + 1 < end) {
1432                 if (pos + 2 + pos[1] > end)
1433                         break;
1434                 if (pos[0] == WLAN_EID_SSID)
1435                         ssid_ie = pos;
1436                 else if (pos[0] == WLAN_EID_SUPP_RATES)
1437                         rate_ie = pos;
1438                 else if (pos[0] == WLAN_EID_EXT_SUPP_RATES)
1439                         rate_ie = pos;
1440                 pos += 2 + pos[1];
1441         }
1442
1443         extra_len = 0;
1444         if (ssid_ie == NULL)
1445                 extra_len += 2 + data->ssid_len;
1446         if (rate_ie == NULL && data->maxrate)
1447                 extra_len += 3;
1448
1449         r = os_zalloc(sizeof(*r) + extra_len + data->ie_len);
1450         if (r == NULL)
1451                 return;
1452         os_memcpy(r, &data->res, sizeof(*r));
1453         r->ie_len = extra_len + data->ie_len;
1454         pos = (u8 *) (r + 1);
1455         if (ssid_ie == NULL) {
1456                 /*
1457                  * Generate a fake SSID IE since the driver did not report
1458                  * a full IE list.
1459                  */
1460                 *pos++ = WLAN_EID_SSID;
1461                 *pos++ = data->ssid_len;
1462                 os_memcpy(pos, data->ssid, data->ssid_len);
1463                 pos += data->ssid_len;
1464         }
1465         if (rate_ie == NULL && data->maxrate) {
1466                 /*
1467                  * Generate a fake Supported Rates IE since the driver did not
1468                  * report a full IE list.
1469                  */
1470                 *pos++ = WLAN_EID_SUPP_RATES;
1471                 *pos++ = 1;
1472                 *pos++ = data->maxrate;
1473         }
1474         if (data->ie)
1475                 os_memcpy(pos, data->ie, data->ie_len);
1476
1477         tmp = os_realloc(res->res,
1478                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1479         if (tmp == NULL) {
1480                 os_free(r);
1481                 return;
1482         }
1483         tmp[res->num++] = r;
1484         res->res = tmp;
1485 }
1486
1487
1488 /**
1489  * wpa_driver_wext_get_scan_results - Fetch the latest scan results
1490  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1491  * Returns: Scan results on success, -1 on failure
1492  */
1493 struct wpa_scan_results * wpa_driver_wext_get_scan_results(void *priv)
1494 {
1495         struct wpa_driver_wext_data *drv = priv;
1496         size_t ap_num = 0, len;
1497         int first;
1498         u8 *res_buf;
1499         struct iw_event iwe_buf, *iwe = &iwe_buf;
1500         char *pos, *end, *custom;
1501         struct wpa_scan_results *res;
1502         struct wext_scan_data data;
1503
1504         res_buf = wpa_driver_wext_giwscan(drv, &len);
1505         if (res_buf == NULL)
1506                 return NULL;
1507
1508         ap_num = 0;
1509         first = 1;
1510
1511         res = os_zalloc(sizeof(*res));
1512         if (res == NULL) {
1513                 os_free(res_buf);
1514                 return NULL;
1515         }
1516
1517         pos = (char *) res_buf;
1518         end = (char *) res_buf + len;
1519         os_memset(&data, 0, sizeof(data));
1520
1521         while (pos + IW_EV_LCP_LEN <= end) {
1522                 /* Event data may be unaligned, so make a local, aligned copy
1523                  * before processing. */
1524                 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
1525                 if (iwe->len <= IW_EV_LCP_LEN)
1526                         break;
1527
1528                 custom = pos + IW_EV_POINT_LEN;
1529                 if (wext_19_iw_point(drv, iwe->cmd)) {
1530                         /* WE-19 removed the pointer from struct iw_point */
1531                         char *dpos = (char *) &iwe_buf.u.data.length;
1532                         int dlen = dpos - (char *) &iwe_buf;
1533                         os_memcpy(dpos, pos + IW_EV_LCP_LEN,
1534                                   sizeof(struct iw_event) - dlen);
1535                 } else {
1536                         os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
1537                         custom += IW_EV_POINT_OFF;
1538                 }
1539
1540                 switch (iwe->cmd) {
1541                 case SIOCGIWAP:
1542                         if (!first)
1543                                 wpa_driver_wext_add_scan_entry(res, &data);
1544                         first = 0;
1545                         os_free(data.ie);
1546                         os_memset(&data, 0, sizeof(data));
1547                         os_memcpy(data.res.bssid,
1548                                   iwe->u.ap_addr.sa_data, ETH_ALEN);
1549                         break;
1550                 case SIOCGIWMODE:
1551                         wext_get_scan_mode(iwe, &data);
1552                         break;
1553                 case SIOCGIWESSID:
1554                         wext_get_scan_ssid(iwe, &data, custom, end);
1555                         break;
1556                 case SIOCGIWFREQ:
1557                         wext_get_scan_freq(iwe, &data);
1558                         break;
1559                 case IWEVQUAL:
1560                         wext_get_scan_qual(iwe, &data);
1561                         break;
1562                 case SIOCGIWENCODE:
1563                         wext_get_scan_encode(iwe, &data);
1564                         break;
1565                 case SIOCGIWRATE:
1566                         wext_get_scan_rate(iwe, &data, pos, end);
1567                         break;
1568                 case IWEVGENIE:
1569                         wext_get_scan_iwevgenie(iwe, &data, custom, end);
1570                         break;
1571                 case IWEVCUSTOM:
1572                         wext_get_scan_custom(iwe, &data, custom, end);
1573                         break;
1574                 }
1575
1576                 pos += iwe->len;
1577         }
1578         os_free(res_buf);
1579         res_buf = NULL;
1580         if (!first)
1581                 wpa_driver_wext_add_scan_entry(res, &data);
1582         os_free(data.ie);
1583
1584         wpa_printf(MSG_DEBUG, "Received %lu bytes of scan results (%lu BSSes)",
1585                    (unsigned long) len, (unsigned long) res->num);
1586
1587         return res;
1588 }
1589
1590
1591 static int wpa_driver_wext_get_range(void *priv)
1592 {
1593         struct wpa_driver_wext_data *drv = priv;
1594         struct iw_range *range;
1595         struct iwreq iwr;
1596         int minlen;
1597         size_t buflen;
1598
1599         /*
1600          * Use larger buffer than struct iw_range in order to allow the
1601          * structure to grow in the future.
1602          */
1603         buflen = sizeof(struct iw_range) + 500;
1604         range = os_zalloc(buflen);
1605         if (range == NULL)
1606                 return -1;
1607
1608         os_memset(&iwr, 0, sizeof(iwr));
1609         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1610         iwr.u.data.pointer = (caddr_t) range;
1611         iwr.u.data.length = buflen;
1612
1613         minlen = ((char *) &range->enc_capa) - (char *) range +
1614                 sizeof(range->enc_capa);
1615
1616         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1617                 perror("ioctl[SIOCGIWRANGE]");
1618                 os_free(range);
1619                 return -1;
1620         } else if (iwr.u.data.length >= minlen &&
1621                    range->we_version_compiled >= 18) {
1622                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1623                            "WE(source)=%d enc_capa=0x%x",
1624                            range->we_version_compiled,
1625                            range->we_version_source,
1626                            range->enc_capa);
1627                 drv->has_capability = 1;
1628                 drv->we_version_compiled = range->we_version_compiled;
1629                 if (range->enc_capa & IW_ENC_CAPA_WPA) {
1630                         drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1631                                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1632                 }
1633                 if (range->enc_capa & IW_ENC_CAPA_WPA2) {
1634                         drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1635                                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1636                 }
1637                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1638                         WPA_DRIVER_CAPA_ENC_WEP104;
1639                 if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP)
1640                         drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1641                 if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP)
1642                         drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1643                 if (range->enc_capa & IW_ENC_CAPA_4WAY_HANDSHAKE)
1644                         drv->capa.flags |= WPA_DRIVER_FLAGS_4WAY_HANDSHAKE;
1645                 drv->capa.max_scan_ssids = 1;
1646
1647                 wpa_printf(MSG_DEBUG, "  capabilities: key_mgmt 0x%x enc 0x%x "
1648                            "flags 0x%x",
1649                            drv->capa.key_mgmt, drv->capa.enc, drv->capa.flags);
1650         } else {
1651                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - "
1652                            "assuming WPA is not supported");
1653         }
1654
1655         os_free(range);
1656         return 0;
1657 }
1658
1659
1660 static int wpa_driver_wext_set_psk(struct wpa_driver_wext_data *drv,
1661                                    const u8 *psk)
1662 {
1663         struct iw_encode_ext *ext;
1664         struct iwreq iwr;
1665         int ret;
1666
1667         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1668
1669         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1670                 return 0;
1671
1672         if (!psk)
1673                 return 0;
1674
1675         os_memset(&iwr, 0, sizeof(iwr));
1676         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1677
1678         ext = os_zalloc(sizeof(*ext) + PMK_LEN);
1679         if (ext == NULL)
1680                 return -1;
1681
1682         iwr.u.encoding.pointer = (caddr_t) ext;
1683         iwr.u.encoding.length = sizeof(*ext) + PMK_LEN;
1684         ext->key_len = PMK_LEN;
1685         os_memcpy(&ext->key, psk, ext->key_len);
1686         ext->alg = IW_ENCODE_ALG_PMK;
1687
1688         ret = ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr);
1689         if (ret < 0)
1690                 perror("ioctl[SIOCSIWENCODEEXT] PMK");
1691         os_free(ext);
1692
1693         return ret;
1694 }
1695
1696
1697 static int wpa_driver_wext_set_key_ext(void *priv, wpa_alg alg,
1698                                        const u8 *addr, int key_idx,
1699                                        int set_tx, const u8 *seq,
1700                                        size_t seq_len,
1701                                        const u8 *key, size_t key_len)
1702 {
1703         struct wpa_driver_wext_data *drv = priv;
1704         struct iwreq iwr;
1705         int ret = 0;
1706         struct iw_encode_ext *ext;
1707
1708         if (seq_len > IW_ENCODE_SEQ_MAX_SIZE) {
1709                 wpa_printf(MSG_DEBUG, "%s: Invalid seq_len %lu",
1710                            __FUNCTION__, (unsigned long) seq_len);
1711                 return -1;
1712         }
1713
1714         ext = os_zalloc(sizeof(*ext) + key_len);
1715         if (ext == NULL)
1716                 return -1;
1717         os_memset(&iwr, 0, sizeof(iwr));
1718         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1719         iwr.u.encoding.flags = key_idx + 1;
1720         iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1721         if (alg == WPA_ALG_NONE)
1722                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1723         iwr.u.encoding.pointer = (caddr_t) ext;
1724         iwr.u.encoding.length = sizeof(*ext) + key_len;
1725
1726         if (addr == NULL ||
1727             os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0)
1728                 ext->ext_flags |= IW_ENCODE_EXT_GROUP_KEY;
1729         if (set_tx)
1730                 ext->ext_flags |= IW_ENCODE_EXT_SET_TX_KEY;
1731
1732         ext->addr.sa_family = ARPHRD_ETHER;
1733         if (addr)
1734                 os_memcpy(ext->addr.sa_data, addr, ETH_ALEN);
1735         else
1736                 os_memset(ext->addr.sa_data, 0xff, ETH_ALEN);
1737         if (key && key_len) {
1738                 os_memcpy(ext + 1, key, key_len);
1739                 ext->key_len = key_len;
1740         }
1741         switch (alg) {
1742         case WPA_ALG_NONE:
1743                 ext->alg = IW_ENCODE_ALG_NONE;
1744                 break;
1745         case WPA_ALG_WEP:
1746                 ext->alg = IW_ENCODE_ALG_WEP;
1747                 break;
1748         case WPA_ALG_TKIP:
1749                 ext->alg = IW_ENCODE_ALG_TKIP;
1750                 break;
1751         case WPA_ALG_CCMP:
1752                 ext->alg = IW_ENCODE_ALG_CCMP;
1753                 break;
1754         case WPA_ALG_PMK:
1755                 ext->alg = IW_ENCODE_ALG_PMK;
1756                 break;
1757 #ifdef CONFIG_IEEE80211W
1758         case WPA_ALG_IGTK:
1759                 ext->alg = IW_ENCODE_ALG_AES_CMAC;
1760                 break;
1761 #endif /* CONFIG_IEEE80211W */
1762         default:
1763                 wpa_printf(MSG_DEBUG, "%s: Unknown algorithm %d",
1764                            __FUNCTION__, alg);
1765                 os_free(ext);
1766                 return -1;
1767         }
1768
1769         if (seq && seq_len) {
1770                 ext->ext_flags |= IW_ENCODE_EXT_RX_SEQ_VALID;
1771                 os_memcpy(ext->rx_seq, seq, seq_len);
1772         }
1773
1774         if (ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr) < 0) {
1775                 ret = errno == EOPNOTSUPP ? -2 : -1;
1776                 if (errno == ENODEV) {
1777                         /*
1778                          * ndiswrapper seems to be returning incorrect error
1779                          * code.. */
1780                         ret = -2;
1781                 }
1782
1783                 perror("ioctl[SIOCSIWENCODEEXT]");
1784         }
1785
1786         os_free(ext);
1787         return ret;
1788 }
1789
1790
1791 /**
1792  * wpa_driver_wext_set_key - Configure encryption key
1793  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1794  * @priv: Private driver interface data
1795  * @alg: Encryption algorithm (%WPA_ALG_NONE, %WPA_ALG_WEP,
1796  *      %WPA_ALG_TKIP, %WPA_ALG_CCMP); %WPA_ALG_NONE clears the key.
1797  * @addr: Address of the peer STA or ff:ff:ff:ff:ff:ff for
1798  *      broadcast/default keys
1799  * @key_idx: key index (0..3), usually 0 for unicast keys
1800  * @set_tx: Configure this key as the default Tx key (only used when
1801  *      driver does not support separate unicast/individual key
1802  * @seq: Sequence number/packet number, seq_len octets, the next
1803  *      packet number to be used for in replay protection; configured
1804  *      for Rx keys (in most cases, this is only used with broadcast
1805  *      keys and set to zero for unicast keys)
1806  * @seq_len: Length of the seq, depends on the algorithm:
1807  *      TKIP: 6 octets, CCMP: 6 octets
1808  * @key: Key buffer; TKIP: 16-byte temporal key, 8-byte Tx Mic key,
1809  *      8-byte Rx Mic Key
1810  * @key_len: Length of the key buffer in octets (WEP: 5 or 13,
1811  *      TKIP: 32, CCMP: 16)
1812  * Returns: 0 on success, -1 on failure
1813  *
1814  * This function uses SIOCSIWENCODEEXT by default, but tries to use
1815  * SIOCSIWENCODE if the extended ioctl fails when configuring a WEP key.
1816  */
1817 int wpa_driver_wext_set_key(const char *ifname, void *priv, wpa_alg alg,
1818                             const u8 *addr, int key_idx,
1819                             int set_tx, const u8 *seq, size_t seq_len,
1820                             const u8 *key, size_t key_len)
1821 {
1822         struct wpa_driver_wext_data *drv = priv;
1823         struct iwreq iwr;
1824         int ret = 0;
1825
1826         wpa_printf(MSG_DEBUG, "%s: alg=%d key_idx=%d set_tx=%d seq_len=%lu "
1827                    "key_len=%lu",
1828                    __FUNCTION__, alg, key_idx, set_tx,
1829                    (unsigned long) seq_len, (unsigned long) key_len);
1830
1831         ret = wpa_driver_wext_set_key_ext(drv, alg, addr, key_idx, set_tx,
1832                                           seq, seq_len, key, key_len);
1833         if (ret == 0)
1834                 return 0;
1835
1836         if (ret == -2 &&
1837             (alg == WPA_ALG_NONE || alg == WPA_ALG_WEP)) {
1838                 wpa_printf(MSG_DEBUG, "Driver did not support "
1839                            "SIOCSIWENCODEEXT, trying SIOCSIWENCODE");
1840                 ret = 0;
1841         } else {
1842                 wpa_printf(MSG_DEBUG, "Driver did not support "
1843                            "SIOCSIWENCODEEXT");
1844                 return ret;
1845         }
1846
1847         os_memset(&iwr, 0, sizeof(iwr));
1848         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1849         iwr.u.encoding.flags = key_idx + 1;
1850         iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1851         if (alg == WPA_ALG_NONE)
1852                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1853         iwr.u.encoding.pointer = (caddr_t) key;
1854         iwr.u.encoding.length = key_len;
1855
1856         if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1857                 perror("ioctl[SIOCSIWENCODE]");
1858                 ret = -1;
1859         }
1860
1861         if (set_tx && alg != WPA_ALG_NONE) {
1862                 os_memset(&iwr, 0, sizeof(iwr));
1863                 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1864                 iwr.u.encoding.flags = key_idx + 1;
1865                 iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1866                 iwr.u.encoding.pointer = (caddr_t) NULL;
1867                 iwr.u.encoding.length = 0;
1868                 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1869                         perror("ioctl[SIOCSIWENCODE] (set_tx)");
1870                         ret = -1;
1871                 }
1872         }
1873
1874         return ret;
1875 }
1876
1877
1878 static int wpa_driver_wext_set_countermeasures(void *priv,
1879                                                int enabled)
1880 {
1881         struct wpa_driver_wext_data *drv = priv;
1882         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1883         return wpa_driver_wext_set_auth_param(drv,
1884                                               IW_AUTH_TKIP_COUNTERMEASURES,
1885                                               enabled);
1886 }
1887
1888
1889 static int wpa_driver_wext_set_drop_unencrypted(void *priv,
1890                                                 int enabled)
1891 {
1892         struct wpa_driver_wext_data *drv = priv;
1893         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1894         drv->use_crypt = enabled;
1895         return wpa_driver_wext_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
1896                                               enabled);
1897 }
1898
1899
1900 static int wpa_driver_wext_mlme(struct wpa_driver_wext_data *drv,
1901                                 const u8 *addr, int cmd, int reason_code)
1902 {
1903         struct iwreq iwr;
1904         struct iw_mlme mlme;
1905         int ret = 0;
1906
1907         os_memset(&iwr, 0, sizeof(iwr));
1908         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1909         os_memset(&mlme, 0, sizeof(mlme));
1910         mlme.cmd = cmd;
1911         mlme.reason_code = reason_code;
1912         mlme.addr.sa_family = ARPHRD_ETHER;
1913         os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN);
1914         iwr.u.data.pointer = (caddr_t) &mlme;
1915         iwr.u.data.length = sizeof(mlme);
1916
1917         if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) {
1918                 perror("ioctl[SIOCSIWMLME]");
1919                 ret = -1;
1920         }
1921
1922         return ret;
1923 }
1924
1925
1926 static void wpa_driver_wext_disconnect(struct wpa_driver_wext_data *drv)
1927 {
1928         struct iwreq iwr;
1929         const u8 null_bssid[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
1930         u8 ssid[32];
1931         int i;
1932
1933         /*
1934          * Only force-disconnect when the card is in infrastructure mode,
1935          * otherwise the driver might interpret the cleared BSSID and random
1936          * SSID as an attempt to create a new ad-hoc network.
1937          */
1938         os_memset(&iwr, 0, sizeof(iwr));
1939         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1940         if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
1941                 perror("ioctl[SIOCGIWMODE]");
1942                 iwr.u.mode = IW_MODE_INFRA;
1943         }
1944
1945         if (iwr.u.mode == IW_MODE_INFRA) {
1946                 /*
1947                  * Clear the BSSID selection and set a random SSID to make sure
1948                  * the driver will not be trying to associate with something
1949                  * even if it does not understand SIOCSIWMLME commands (or
1950                  * tries to associate automatically after deauth/disassoc).
1951                  */
1952                 wpa_driver_wext_set_bssid(drv, null_bssid);
1953
1954                 for (i = 0; i < 32; i++)
1955                         ssid[i] = rand() & 0xFF;
1956                 wpa_driver_wext_set_ssid(drv, ssid, 32);
1957         }
1958 }
1959
1960
1961 static int wpa_driver_wext_deauthenticate(void *priv, const u8 *addr,
1962                                           int reason_code)
1963 {
1964         struct wpa_driver_wext_data *drv = priv;
1965         int ret;
1966         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1967         ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DEAUTH, reason_code);
1968         wpa_driver_wext_disconnect(drv);
1969         return ret;
1970 }
1971
1972
1973 static int wpa_driver_wext_disassociate(void *priv, const u8 *addr,
1974                                         int reason_code)
1975 {
1976         struct wpa_driver_wext_data *drv = priv;
1977         int ret;
1978         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1979         ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DISASSOC, reason_code);
1980         wpa_driver_wext_disconnect(drv);
1981         return ret;
1982 }
1983
1984
1985 static int wpa_driver_wext_set_gen_ie(void *priv, const u8 *ie,
1986                                       size_t ie_len)
1987 {
1988         struct wpa_driver_wext_data *drv = priv;
1989         struct iwreq iwr;
1990         int ret = 0;
1991
1992         os_memset(&iwr, 0, sizeof(iwr));
1993         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1994         iwr.u.data.pointer = (caddr_t) ie;
1995         iwr.u.data.length = ie_len;
1996
1997         if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) {
1998                 perror("ioctl[SIOCSIWGENIE]");
1999                 ret = -1;
2000         }
2001
2002         return ret;
2003 }
2004
2005
2006 int wpa_driver_wext_cipher2wext(int cipher)
2007 {
2008         switch (cipher) {
2009         case CIPHER_NONE:
2010                 return IW_AUTH_CIPHER_NONE;
2011         case CIPHER_WEP40:
2012                 return IW_AUTH_CIPHER_WEP40;
2013         case CIPHER_TKIP:
2014                 return IW_AUTH_CIPHER_TKIP;
2015         case CIPHER_CCMP:
2016                 return IW_AUTH_CIPHER_CCMP;
2017         case CIPHER_WEP104:
2018                 return IW_AUTH_CIPHER_WEP104;
2019         default:
2020                 return 0;
2021         }
2022 }
2023
2024
2025 int wpa_driver_wext_keymgmt2wext(int keymgmt)
2026 {
2027         switch (keymgmt) {
2028         case KEY_MGMT_802_1X:
2029         case KEY_MGMT_802_1X_NO_WPA:
2030                 return IW_AUTH_KEY_MGMT_802_1X;
2031         case KEY_MGMT_PSK:
2032                 return IW_AUTH_KEY_MGMT_PSK;
2033         default:
2034                 return 0;
2035         }
2036 }
2037
2038
2039 static int
2040 wpa_driver_wext_auth_alg_fallback(struct wpa_driver_wext_data *drv,
2041                                   struct wpa_driver_associate_params *params)
2042 {
2043         struct iwreq iwr;
2044         int ret = 0;
2045
2046         wpa_printf(MSG_DEBUG, "WEXT: Driver did not support "
2047                    "SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE");
2048
2049         os_memset(&iwr, 0, sizeof(iwr));
2050         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2051         /* Just changing mode, not actual keys */
2052         iwr.u.encoding.flags = 0;
2053         iwr.u.encoding.pointer = (caddr_t) NULL;
2054         iwr.u.encoding.length = 0;
2055
2056         /*
2057          * Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two
2058          * different things. Here they are used to indicate Open System vs.
2059          * Shared Key authentication algorithm. However, some drivers may use
2060          * them to select between open/restricted WEP encrypted (open = allow
2061          * both unencrypted and encrypted frames; restricted = only allow
2062          * encrypted frames).
2063          */
2064
2065         if (!drv->use_crypt) {
2066                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
2067         } else {
2068                 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2069                         iwr.u.encoding.flags |= IW_ENCODE_OPEN;
2070                 if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2071                         iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED;
2072         }
2073
2074         if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
2075                 perror("ioctl[SIOCSIWENCODE]");
2076                 ret = -1;
2077         }
2078
2079         return ret;
2080 }
2081
2082
2083 int wpa_driver_wext_associate(void *priv,
2084                               struct wpa_driver_associate_params *params)
2085 {
2086         struct wpa_driver_wext_data *drv = priv;
2087         int ret = 0;
2088         int allow_unencrypted_eapol;
2089         int value;
2090
2091         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2092
2093         if (wpa_driver_wext_set_drop_unencrypted(drv, params->drop_unencrypted)
2094             < 0)
2095                 ret = -1;
2096         if (wpa_driver_wext_set_auth_alg(drv, params->auth_alg) < 0)
2097                 ret = -1;
2098         if (wpa_driver_wext_set_mode(drv, params->mode) < 0)
2099                 ret = -1;
2100
2101         /*
2102          * If the driver did not support SIOCSIWAUTH, fallback to
2103          * SIOCSIWENCODE here.
2104          */
2105         if (drv->auth_alg_fallback &&
2106             wpa_driver_wext_auth_alg_fallback(drv, params) < 0)
2107                 ret = -1;
2108
2109         if (!params->bssid &&
2110             wpa_driver_wext_set_bssid(drv, NULL) < 0)
2111                 ret = -1;
2112
2113         /* TODO: should consider getting wpa version and cipher/key_mgmt suites
2114          * from configuration, not from here, where only the selected suite is
2115          * available */
2116         if (wpa_driver_wext_set_gen_ie(drv, params->wpa_ie, params->wpa_ie_len)
2117             < 0)
2118                 ret = -1;
2119         if (params->wpa_ie == NULL || params->wpa_ie_len == 0)
2120                 value = IW_AUTH_WPA_VERSION_DISABLED;
2121         else if (params->wpa_ie[0] == WLAN_EID_RSN)
2122                 value = IW_AUTH_WPA_VERSION_WPA2;
2123         else
2124                 value = IW_AUTH_WPA_VERSION_WPA;
2125         if (wpa_driver_wext_set_auth_param(drv,
2126                                            IW_AUTH_WPA_VERSION, value) < 0)
2127                 ret = -1;
2128         value = wpa_driver_wext_cipher2wext(params->pairwise_suite);
2129         if (wpa_driver_wext_set_auth_param(drv,
2130                                            IW_AUTH_CIPHER_PAIRWISE, value) < 0)
2131                 ret = -1;
2132         value = wpa_driver_wext_cipher2wext(params->group_suite);
2133         if (wpa_driver_wext_set_auth_param(drv,
2134                                            IW_AUTH_CIPHER_GROUP, value) < 0)
2135                 ret = -1;
2136         value = wpa_driver_wext_keymgmt2wext(params->key_mgmt_suite);
2137         if (wpa_driver_wext_set_auth_param(drv,
2138                                            IW_AUTH_KEY_MGMT, value) < 0)
2139                 ret = -1;
2140         value = params->key_mgmt_suite != KEY_MGMT_NONE ||
2141                 params->pairwise_suite != CIPHER_NONE ||
2142                 params->group_suite != CIPHER_NONE ||
2143                 params->wpa_ie_len;
2144         if (wpa_driver_wext_set_auth_param(drv,
2145                                            IW_AUTH_PRIVACY_INVOKED, value) < 0)
2146                 ret = -1;
2147
2148         /* Allow unencrypted EAPOL messages even if pairwise keys are set when
2149          * not using WPA. IEEE 802.1X specifies that these frames are not
2150          * encrypted, but WPA encrypts them when pairwise keys are in use. */
2151         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
2152             params->key_mgmt_suite == KEY_MGMT_PSK)
2153                 allow_unencrypted_eapol = 0;
2154         else
2155                 allow_unencrypted_eapol = 1;
2156
2157         if (wpa_driver_wext_set_psk(drv, params->psk) < 0)
2158                 ret = -1;
2159         if (wpa_driver_wext_set_auth_param(drv,
2160                                            IW_AUTH_RX_UNENCRYPTED_EAPOL,
2161                                            allow_unencrypted_eapol) < 0)
2162                 ret = -1;
2163 #ifdef CONFIG_IEEE80211W
2164         switch (params->mgmt_frame_protection) {
2165         case NO_MGMT_FRAME_PROTECTION:
2166                 value = IW_AUTH_MFP_DISABLED;
2167                 break;
2168         case MGMT_FRAME_PROTECTION_OPTIONAL:
2169                 value = IW_AUTH_MFP_OPTIONAL;
2170                 break;
2171         case MGMT_FRAME_PROTECTION_REQUIRED:
2172                 value = IW_AUTH_MFP_REQUIRED;
2173                 break;
2174         };
2175         if (wpa_driver_wext_set_auth_param(drv, IW_AUTH_MFP, value) < 0)
2176                 ret = -1;
2177 #endif /* CONFIG_IEEE80211W */
2178         if (params->freq && wpa_driver_wext_set_freq(drv, params->freq) < 0)
2179                 ret = -1;
2180         if (wpa_driver_wext_set_ssid(drv, params->ssid, params->ssid_len) < 0)
2181                 ret = -1;
2182         if (params->bssid &&
2183             wpa_driver_wext_set_bssid(drv, params->bssid) < 0)
2184                 ret = -1;
2185
2186         return ret;
2187 }
2188
2189
2190 static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg)
2191 {
2192         struct wpa_driver_wext_data *drv = priv;
2193         int algs = 0, res;
2194
2195         if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
2196                 algs |= IW_AUTH_ALG_OPEN_SYSTEM;
2197         if (auth_alg & AUTH_ALG_SHARED_KEY)
2198                 algs |= IW_AUTH_ALG_SHARED_KEY;
2199         if (auth_alg & AUTH_ALG_LEAP)
2200                 algs |= IW_AUTH_ALG_LEAP;
2201         if (algs == 0) {
2202                 /* at least one algorithm should be set */
2203                 algs = IW_AUTH_ALG_OPEN_SYSTEM;
2204         }
2205
2206         res = wpa_driver_wext_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG,
2207                                              algs);
2208         drv->auth_alg_fallback = res == -2;
2209         return res;
2210 }
2211
2212
2213 /**
2214  * wpa_driver_wext_set_mode - Set wireless mode (infra/adhoc), SIOCSIWMODE
2215  * @priv: Pointer to private wext data from wpa_driver_wext_init()
2216  * @mode: 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS
2217  * Returns: 0 on success, -1 on failure
2218  */
2219 int wpa_driver_wext_set_mode(void *priv, int mode)
2220 {
2221         struct wpa_driver_wext_data *drv = priv;
2222         struct iwreq iwr;
2223         int ret = -1, flags;
2224         unsigned int new_mode = mode ? IW_MODE_ADHOC : IW_MODE_INFRA;
2225
2226         os_memset(&iwr, 0, sizeof(iwr));
2227         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2228         iwr.u.mode = new_mode;
2229         if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) == 0) {
2230                 ret = 0;
2231                 goto done;
2232         }
2233
2234         if (errno != EBUSY) {
2235                 perror("ioctl[SIOCSIWMODE]");
2236                 goto done;
2237         }
2238
2239         /* mac80211 doesn't allow mode changes while the device is up, so if
2240          * the device isn't in the mode we're about to change to, take device
2241          * down, try to set the mode again, and bring it back up.
2242          */
2243         if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
2244                 perror("ioctl[SIOCGIWMODE]");
2245                 goto done;
2246         }
2247
2248         if (iwr.u.mode == new_mode) {
2249                 ret = 0;
2250                 goto done;
2251         }
2252
2253         if (wpa_driver_wext_get_ifflags(drv, &flags) == 0) {
2254                 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
2255
2256                 /* Try to set the mode again while the interface is down */
2257                 iwr.u.mode = new_mode;
2258                 if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0)
2259                         perror("ioctl[SIOCSIWMODE]");
2260                 else
2261                         ret = 0;
2262
2263                 /* Ignore return value of get_ifflags to ensure that the device
2264                  * is always up like it was before this function was called.
2265                  */
2266                 (void) wpa_driver_wext_get_ifflags(drv, &flags);
2267                 (void) wpa_driver_wext_set_ifflags(drv, flags | IFF_UP);
2268         }
2269
2270 done:
2271         return ret;
2272 }
2273
2274
2275 static int wpa_driver_wext_pmksa(struct wpa_driver_wext_data *drv,
2276                                  u32 cmd, const u8 *bssid, const u8 *pmkid)
2277 {
2278         struct iwreq iwr;
2279         struct iw_pmksa pmksa;
2280         int ret = 0;
2281
2282         os_memset(&iwr, 0, sizeof(iwr));
2283         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2284         os_memset(&pmksa, 0, sizeof(pmksa));
2285         pmksa.cmd = cmd;
2286         pmksa.bssid.sa_family = ARPHRD_ETHER;
2287         if (bssid)
2288                 os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN);
2289         if (pmkid)
2290                 os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN);
2291         iwr.u.data.pointer = (caddr_t) &pmksa;
2292         iwr.u.data.length = sizeof(pmksa);
2293
2294         if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) {
2295                 if (errno != EOPNOTSUPP)
2296                         perror("ioctl[SIOCSIWPMKSA]");
2297                 ret = -1;
2298         }
2299
2300         return ret;
2301 }
2302
2303
2304 static int wpa_driver_wext_add_pmkid(void *priv, const u8 *bssid,
2305                                      const u8 *pmkid)
2306 {
2307         struct wpa_driver_wext_data *drv = priv;
2308         return wpa_driver_wext_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid);
2309 }
2310
2311
2312 static int wpa_driver_wext_remove_pmkid(void *priv, const u8 *bssid,
2313                                         const u8 *pmkid)
2314 {
2315         struct wpa_driver_wext_data *drv = priv;
2316         return wpa_driver_wext_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid);
2317 }
2318
2319
2320 static int wpa_driver_wext_flush_pmkid(void *priv)
2321 {
2322         struct wpa_driver_wext_data *drv = priv;
2323         return wpa_driver_wext_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL);
2324 }
2325
2326
2327 int wpa_driver_wext_get_capa(void *priv, struct wpa_driver_capa *capa)
2328 {
2329         struct wpa_driver_wext_data *drv = priv;
2330         if (!drv->has_capability)
2331                 return -1;
2332         os_memcpy(capa, &drv->capa, sizeof(*capa));
2333         return 0;
2334 }
2335
2336
2337 int wpa_driver_wext_alternative_ifindex(struct wpa_driver_wext_data *drv,
2338                                         const char *ifname)
2339 {
2340         if (ifname == NULL) {
2341                 drv->ifindex2 = -1;
2342                 return 0;
2343         }
2344
2345         drv->ifindex2 = if_nametoindex(ifname);
2346         if (drv->ifindex2 <= 0)
2347                 return -1;
2348
2349         wpa_printf(MSG_DEBUG, "Added alternative ifindex %d (%s) for "
2350                    "wireless events", drv->ifindex2, ifname);
2351
2352         return 0;
2353 }
2354
2355
2356 int wpa_driver_wext_set_operstate(void *priv, int state)
2357 {
2358         struct wpa_driver_wext_data *drv = priv;
2359
2360         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
2361                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
2362         drv->operstate = state;
2363         return wpa_driver_wext_send_oper_ifla(
2364                 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
2365 }
2366
2367
2368 int wpa_driver_wext_get_version(struct wpa_driver_wext_data *drv)
2369 {
2370         return drv->we_version_compiled;
2371 }
2372
2373
2374 const struct wpa_driver_ops wpa_driver_wext_ops = {
2375         .name = "wext",
2376         .desc = "Linux wireless extensions (generic)",
2377         .get_bssid = wpa_driver_wext_get_bssid,
2378         .get_ssid = wpa_driver_wext_get_ssid,
2379         .set_key = wpa_driver_wext_set_key,
2380         .set_countermeasures = wpa_driver_wext_set_countermeasures,
2381         .scan2 = wpa_driver_wext_scan,
2382         .get_scan_results2 = wpa_driver_wext_get_scan_results,
2383         .deauthenticate = wpa_driver_wext_deauthenticate,
2384         .disassociate = wpa_driver_wext_disassociate,
2385         .associate = wpa_driver_wext_associate,
2386         .init = wpa_driver_wext_init,
2387         .deinit = wpa_driver_wext_deinit,
2388         .add_pmkid = wpa_driver_wext_add_pmkid,
2389         .remove_pmkid = wpa_driver_wext_remove_pmkid,
2390         .flush_pmkid = wpa_driver_wext_flush_pmkid,
2391         .get_capa = wpa_driver_wext_get_capa,
2392         .set_operstate = wpa_driver_wext_set_operstate,
2393 };