src/drivers/driver_wext.c

   1 /*
   2  * Driver interaction with generic Linux Wireless Extensions
   3  * Copyright (c) 2003-2010, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  *
   8  * This file implements a driver interface for the Linux Wireless Extensions.
   9  * When used with WE-18 or newer, this interface can be used as-is with number
  10  * of drivers. In addition to this, some of the common functions in this file
  11  * can be used by other driver interface implementations that use generic WE
  12  * ioctls, but require private ioctls for some of the functionality.
  13  */
  14
  15 #include "includes.h"
  16 #include <sys/ioctl.h>
  17 #include <sys/types.h>
  18 #include <sys/stat.h>
  19 #include <fcntl.h>
  20 #include <net/if_arp.h>
  21
  22 #include "linux_wext.h"
  23 #include "common.h"
  24 #include "eloop.h"
  25 #include "common/ieee802_11_defs.h"
  26 #include "common/wpa_common.h"
  27 #include "priv_netlink.h"
  28 #include "netlink.h"
  29 #include "linux_ioctl.h"
  30 #include "rfkill.h"
  31 #include "driver.h"
  32 #include "driver_wext.h"
  33
  34 #ifdef ANDROID
  35 #include "android_drv.h"
  36 #endif /* ANDROID */
  37
  38 static int wpa_driver_wext_flush_pmkid(void *priv);
  39 static int wpa_driver_wext_get_range(void *priv);
  40 static int wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv);
  41 static void wpa_driver_wext_disconnect(struct wpa_driver_wext_data *drv);
  42 static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg);
  43
  44
  45 int wpa_driver_wext_set_auth_param(struct wpa_driver_wext_data *drv,
  46                                    int idx, u32 value)
  47 {
  48         struct iwreq iwr;
  49         int ret = 0;
  50
  51         os_memset(&iwr, 0, sizeof(iwr));
  52         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
  53         iwr.u.param.flags = idx & IW_AUTH_INDEX;
  54         iwr.u.param.value = value;
  55
  56         if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) {
  57                 if (errno != EOPNOTSUPP) {
  58                         wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d "
  59                                    "value 0x%x) failed: %s)",
  60                                    idx, value, strerror(errno));
  61                 }
  62                 ret = errno == EOPNOTSUPP ? -2 : -1;
  63         }
  64
  65         return ret;
  66 }
  67
  68
  69 /**
  70  * wpa_driver_wext_get_bssid - Get BSSID, SIOCGIWAP
  71  * @priv: Pointer to private wext data from wpa_driver_wext_init()
  72  * @bssid: Buffer for BSSID
  73  * Returns: 0 on success, -1 on failure
  74  */
  75 int wpa_driver_wext_get_bssid(void *priv, u8 *bssid)
  76 {
  77         struct wpa_driver_wext_data *drv = priv;
  78         struct iwreq iwr;
  79         int ret = 0;
  80
  81         os_memset(&iwr, 0, sizeof(iwr));
  82         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
  83
  84         if (ioctl(drv->ioctl_sock, SIOCGIWAP, &iwr) < 0) {
  85                 perror("ioctl[SIOCGIWAP]");
  86                 ret = -1;
  87         }
  88         os_memcpy(bssid, iwr.u.ap_addr.sa_data, ETH_ALEN);
  89
  90         return ret;
  91 }
  92
  93
  94 /**
  95  * wpa_driver_wext_set_bssid - Set BSSID, SIOCSIWAP
  96  * @priv: Pointer to private wext data from wpa_driver_wext_init()
  97  * @bssid: BSSID
  98  * Returns: 0 on success, -1 on failure
  99  */
 100 int wpa_driver_wext_set_bssid(void *priv, const u8 *bssid)
 101 {
 102         struct wpa_driver_wext_data *drv = priv;
 103         struct iwreq iwr;
 104         int ret = 0;
 105
 106         os_memset(&iwr, 0, sizeof(iwr));
 107         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 108         iwr.u.ap_addr.sa_family = ARPHRD_ETHER;
 109         if (bssid)
 110                 os_memcpy(iwr.u.ap_addr.sa_data, bssid, ETH_ALEN);
 111         else
 112                 os_memset(iwr.u.ap_addr.sa_data, 0, ETH_ALEN);
 113
 114         if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr) < 0) {
 115                 perror("ioctl[SIOCSIWAP]");
 116                 ret = -1;
 117         }
 118
 119         return ret;
 120 }
 121
 122
 123 /**
 124  * wpa_driver_wext_get_ssid - Get SSID, SIOCGIWESSID
 125  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 126  * @ssid: Buffer for the SSID; must be at least 32 bytes long
 127  * Returns: SSID length on success, -1 on failure
 128  */
 129 int wpa_driver_wext_get_ssid(void *priv, u8 *ssid)
 130 {
 131         struct wpa_driver_wext_data *drv = priv;
 132         struct iwreq iwr;
 133         int ret = 0;
 134
 135         os_memset(&iwr, 0, sizeof(iwr));
 136         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 137         iwr.u.essid.pointer = (caddr_t) ssid;
 138         iwr.u.essid.length = 32;
 139
 140         if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
 141                 perror("ioctl[SIOCGIWESSID]");
 142                 ret = -1;
 143         } else {
 144                 ret = iwr.u.essid.length;
 145                 if (ret > 32)
 146                         ret = 32;
 147                 /* Some drivers include nul termination in the SSID, so let's
 148                  * remove it here before further processing. WE-21 changes this
 149                  * to explicitly require the length _not_ to include nul
 150                  * termination. */
 151                 if (ret > 0 && ssid[ret - 1] == '\0' &&
 152                     drv->we_version_compiled < 21)
 153                         ret--;
 154         }
 155
 156         return ret;
 157 }
 158
 159
 160 /**
 161  * wpa_driver_wext_set_ssid - Set SSID, SIOCSIWESSID
 162  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 163  * @ssid: SSID
 164  * @ssid_len: Length of SSID (0..32)
 165  * Returns: 0 on success, -1 on failure
 166  */
 167 int wpa_driver_wext_set_ssid(void *priv, const u8 *ssid, size_t ssid_len)
 168 {
 169         struct wpa_driver_wext_data *drv = priv;
 170         struct iwreq iwr;
 171         int ret = 0;
 172         char buf[33];
 173
 174         if (ssid_len > 32)
 175                 return -1;
 176
 177         os_memset(&iwr, 0, sizeof(iwr));
 178         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 179         /* flags: 1 = ESSID is active, 0 = not (promiscuous) */
 180         iwr.u.essid.flags = (ssid_len != 0);
 181         os_memset(buf, 0, sizeof(buf));
 182         os_memcpy(buf, ssid, ssid_len);
 183         iwr.u.essid.pointer = (caddr_t) buf;
 184         if (drv->we_version_compiled < 21) {
 185                 /* For historic reasons, set SSID length to include one extra
 186                  * character, C string nul termination, even though SSID is
 187                  * really an octet string that should not be presented as a C
 188                  * string. Some Linux drivers decrement the length by one and
 189                  * can thus end up missing the last octet of the SSID if the
 190                  * length is not incremented here. WE-21 changes this to
 191                  * explicitly require the length _not_ to include nul
 192                  * termination. */
 193                 if (ssid_len)
 194                         ssid_len++;
 195         }
 196         iwr.u.essid.length = ssid_len;
 197
 198         if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
 199                 perror("ioctl[SIOCSIWESSID]");
 200                 ret = -1;
 201         }
 202
 203         return ret;
 204 }
 205
 206
 207 /**
 208  * wpa_driver_wext_set_freq - Set frequency/channel, SIOCSIWFREQ
 209  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 210  * @freq: Frequency in MHz
 211  * Returns: 0 on success, -1 on failure
 212  */
 213 int wpa_driver_wext_set_freq(void *priv, int freq)
 214 {
 215         struct wpa_driver_wext_data *drv = priv;
 216         struct iwreq iwr;
 217         int ret = 0;
 218
 219         os_memset(&iwr, 0, sizeof(iwr));
 220         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 221         iwr.u.freq.m = freq * 100000;
 222         iwr.u.freq.e = 1;
 223
 224         if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
 225                 perror("ioctl[SIOCSIWFREQ]");
 226                 ret = -1;
 227         }
 228
 229         return ret;
 230 }
 231
 232
 233 static void
 234 wpa_driver_wext_event_wireless_custom(void *ctx, char *custom)
 235 {
 236         union wpa_event_data data;
 237
 238         wpa_printf(MSG_MSGDUMP, "WEXT: Custom wireless event: '%s'",
 239                    custom);
 240
 241         os_memset(&data, 0, sizeof(data));
 242         /* Host AP driver */
 243         if (os_strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
 244                 data.michael_mic_failure.unicast =
 245                         os_strstr(custom, " unicast ") != NULL;
 246                 /* TODO: parse parameters(?) */
 247                 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 248         } else if (os_strncmp(custom, "ASSOCINFO(ReqIEs=", 17) == 0) {
 249                 char *spos;
 250                 int bytes;
 251                 u8 *req_ies = NULL, *resp_ies = NULL;
 252
 253                 spos = custom + 17;
 254
 255                 bytes = strspn(spos, "0123456789abcdefABCDEF");
 256                 if (!bytes || (bytes & 1))
 257                         return;
 258                 bytes /= 2;
 259
 260                 req_ies = os_malloc(bytes);
 261                 if (req_ies == NULL ||
 262                     hexstr2bin(spos, req_ies, bytes) < 0)
 263                         goto done;
 264                 data.assoc_info.req_ies = req_ies;
 265                 data.assoc_info.req_ies_len = bytes;
 266
 267                 spos += bytes * 2;
 268
 269                 data.assoc_info.resp_ies = NULL;
 270                 data.assoc_info.resp_ies_len = 0;
 271
 272                 if (os_strncmp(spos, " RespIEs=", 9) == 0) {
 273                         spos += 9;
 274
 275                         bytes = strspn(spos, "0123456789abcdefABCDEF");
 276                         if (!bytes || (bytes & 1))
 277                                 goto done;
 278                         bytes /= 2;
 279
 280                         resp_ies = os_malloc(bytes);
 281                         if (resp_ies == NULL ||
 282                             hexstr2bin(spos, resp_ies, bytes) < 0)
 283                                 goto done;
 284                         data.assoc_info.resp_ies = resp_ies;
 285                         data.assoc_info.resp_ies_len = bytes;
 286                 }
 287
 288                 wpa_supplicant_event(ctx, EVENT_ASSOCINFO, &data);
 289
 290         done:
 291                 os_free(resp_ies);
 292                 os_free(req_ies);
 293 #ifdef CONFIG_PEERKEY
 294         } else if (os_strncmp(custom, "STKSTART.request=", 17) == 0) {
 295                 if (hwaddr_aton(custom + 17, data.stkstart.peer)) {
 296                         wpa_printf(MSG_DEBUG, "WEXT: unrecognized "
 297                                    "STKSTART.request '%s'", custom + 17);
 298                         return;
 299                 }
 300                 wpa_supplicant_event(ctx, EVENT_STKSTART, &data);
 301 #endif /* CONFIG_PEERKEY */
 302 #ifdef ANDROID
 303         } else if (os_strncmp(custom, "STOP", 4) == 0) {
 304                 wpa_msg(ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STOPPED");
 305         } else if (os_strncmp(custom, "START", 5) == 0) {
 306                 wpa_msg(ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STARTED");
 307         } else if (os_strncmp(custom, "HANG", 4) == 0) {
 308                 wpa_msg(ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
 309 #endif /* ANDROID */
 310         }
 311 }
 312
 313
 314 static int wpa_driver_wext_event_wireless_michaelmicfailure(
 315         void *ctx, const char *ev, size_t len)
 316 {
 317         const struct iw_michaelmicfailure *mic;
 318         union wpa_event_data data;
 319
 320         if (len < sizeof(*mic))
 321                 return -1;
 322
 323         mic = (const struct iw_michaelmicfailure *) ev;
 324
 325         wpa_printf(MSG_DEBUG, "Michael MIC failure wireless event: "
 326                    "flags=0x%x src_addr=" MACSTR, mic->flags,
 327                    MAC2STR(mic->src_addr.sa_data));
 328
 329         os_memset(&data, 0, sizeof(data));
 330         data.michael_mic_failure.unicast = !(mic->flags & IW_MICFAILURE_GROUP);
 331         wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 332
 333         return 0;
 334 }
 335
 336
 337 static int wpa_driver_wext_event_wireless_pmkidcand(
 338         struct wpa_driver_wext_data *drv, const char *ev, size_t len)
 339 {
 340         const struct iw_pmkid_cand *cand;
 341         union wpa_event_data data;
 342         const u8 *addr;
 343
 344         if (len < sizeof(*cand))
 345                 return -1;
 346
 347         cand = (const struct iw_pmkid_cand *) ev;
 348         addr = (const u8 *) cand->bssid.sa_data;
 349
 350         wpa_printf(MSG_DEBUG, "PMKID candidate wireless event: "
 351                    "flags=0x%x index=%d bssid=" MACSTR, cand->flags,
 352                    cand->index, MAC2STR(addr));
 353
 354         os_memset(&data, 0, sizeof(data));
 355         os_memcpy(data.pmkid_candidate.bssid, addr, ETH_ALEN);
 356         data.pmkid_candidate.index = cand->index;
 357         data.pmkid_candidate.preauth = cand->flags & IW_PMKID_CAND_PREAUTH;
 358         wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
 359
 360         return 0;
 361 }
 362
 363
 364 static int wpa_driver_wext_event_wireless_assocreqie(
 365         struct wpa_driver_wext_data *drv, const char *ev, int len)
 366 {
 367         if (len < 0)
 368                 return -1;
 369
 370         wpa_hexdump(MSG_DEBUG, "AssocReq IE wireless event", (const u8 *) ev,
 371                     len);
 372         os_free(drv->assoc_req_ies);
 373         drv->assoc_req_ies = os_malloc(len);
 374         if (drv->assoc_req_ies == NULL) {
 375                 drv->assoc_req_ies_len = 0;
 376                 return -1;
 377         }
 378         os_memcpy(drv->assoc_req_ies, ev, len);
 379         drv->assoc_req_ies_len = len;
 380
 381         return 0;
 382 }
 383
 384
 385 static int wpa_driver_wext_event_wireless_assocrespie(
 386         struct wpa_driver_wext_data *drv, const char *ev, int len)
 387 {
 388         if (len < 0)
 389                 return -1;
 390
 391         wpa_hexdump(MSG_DEBUG, "AssocResp IE wireless event", (const u8 *) ev,
 392                     len);
 393         os_free(drv->assoc_resp_ies);
 394         drv->assoc_resp_ies = os_malloc(len);
 395         if (drv->assoc_resp_ies == NULL) {
 396                 drv->assoc_resp_ies_len = 0;
 397                 return -1;
 398         }
 399         os_memcpy(drv->assoc_resp_ies, ev, len);
 400         drv->assoc_resp_ies_len = len;
 401
 402         return 0;
 403 }
 404
 405
 406 static void wpa_driver_wext_event_assoc_ies(struct wpa_driver_wext_data *drv)
 407 {
 408         union wpa_event_data data;
 409
 410         if (drv->assoc_req_ies == NULL && drv->assoc_resp_ies == NULL)
 411                 return;
 412
 413         os_memset(&data, 0, sizeof(data));
 414         if (drv->assoc_req_ies) {
 415                 data.assoc_info.req_ies = drv->assoc_req_ies;
 416                 data.assoc_info.req_ies_len = drv->assoc_req_ies_len;
 417         }
 418         if (drv->assoc_resp_ies) {
 419                 data.assoc_info.resp_ies = drv->assoc_resp_ies;
 420                 data.assoc_info.resp_ies_len = drv->assoc_resp_ies_len;
 421         }
 422
 423         wpa_supplicant_event(drv->ctx, EVENT_ASSOCINFO, &data);
 424
 425         os_free(drv->assoc_req_ies);
 426         drv->assoc_req_ies = NULL;
 427         os_free(drv->assoc_resp_ies);
 428         drv->assoc_resp_ies = NULL;
 429 }
 430
 431
 432 static void wpa_driver_wext_event_wireless(struct wpa_driver_wext_data *drv,
 433                                            char *data, int len)
 434 {
 435         struct iw_event iwe_buf, *iwe = &iwe_buf;
 436         char *pos, *end, *custom, *buf;
 437
 438         pos = data;
 439         end = data + len;
 440
 441         while (pos + IW_EV_LCP_LEN <= end) {
 442                 /* Event data may be unaligned, so make a local, aligned copy
 443                  * before processing. */
 444                 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
 445                 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
 446                            iwe->cmd, iwe->len);
 447                 if (iwe->len <= IW_EV_LCP_LEN)
 448                         return;
 449
 450                 custom = pos + IW_EV_POINT_LEN;
 451                 if (drv->we_version_compiled > 18 &&
 452                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
 453                      iwe->cmd == IWEVCUSTOM ||
 454                      iwe->cmd == IWEVASSOCREQIE ||
 455                      iwe->cmd == IWEVASSOCRESPIE ||
 456                      iwe->cmd == IWEVPMKIDCAND)) {
 457                         /* WE-19 removed the pointer from struct iw_point */
 458                         char *dpos = (char *) &iwe_buf.u.data.length;
 459                         int dlen = dpos - (char *) &iwe_buf;
 460                         os_memcpy(dpos, pos + IW_EV_LCP_LEN,
 461                                   sizeof(struct iw_event) - dlen);
 462                 } else {
 463                         os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
 464                         custom += IW_EV_POINT_OFF;
 465                 }
 466
 467                 switch (iwe->cmd) {
 468                 case SIOCGIWAP:
 469                         wpa_printf(MSG_DEBUG, "Wireless event: new AP: "
 470                                    MACSTR,
 471                                    MAC2STR((u8 *) iwe->u.ap_addr.sa_data));
 472                         if (is_zero_ether_addr(
 473                                     (const u8 *) iwe->u.ap_addr.sa_data) ||
 474                             os_memcmp(iwe->u.ap_addr.sa_data,
 475                                       "\x44\x44\x44\x44\x44\x44", ETH_ALEN) ==
 476                             0) {
 477                                 os_free(drv->assoc_req_ies);
 478                                 drv->assoc_req_ies = NULL;
 479                                 os_free(drv->assoc_resp_ies);
 480                                 drv->assoc_resp_ies = NULL;
 481                                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC,
 482                                                      NULL);
 483
 484                         } else {
 485                                 wpa_driver_wext_event_assoc_ies(drv);
 486                                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC,
 487                                                      NULL);
 488                         }
 489                         break;
 490                 case IWEVMICHAELMICFAILURE:
 491                         if (custom + iwe->u.data.length > end) {
 492                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 493                                            "IWEVMICHAELMICFAILURE length");
 494                                 return;
 495                         }
 496                         wpa_driver_wext_event_wireless_michaelmicfailure(
 497                                 drv->ctx, custom, iwe->u.data.length);
 498                         break;
 499                 case IWEVCUSTOM:
 500                         if (custom + iwe->u.data.length > end) {
 501                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 502                                            "IWEVCUSTOM length");
 503                                 return;
 504                         }
 505                         buf = os_malloc(iwe->u.data.length + 1);
 506                         if (buf == NULL)
 507                                 return;
 508                         os_memcpy(buf, custom, iwe->u.data.length);
 509                         buf[iwe->u.data.length] = '\0';
 510                         wpa_driver_wext_event_wireless_custom(drv->ctx, buf);
 511                         os_free(buf);
 512                         break;
 513                 case SIOCGIWSCAN:
 514                         drv->scan_complete_events = 1;
 515                         eloop_cancel_timeout(wpa_driver_wext_scan_timeout,
 516                                              drv, drv->ctx);
 517                         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS,
 518                                              NULL);
 519                         break;
 520                 case IWEVASSOCREQIE:
 521                         if (custom + iwe->u.data.length > end) {
 522                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 523                                            "IWEVASSOCREQIE length");
 524                                 return;
 525                         }
 526                         wpa_driver_wext_event_wireless_assocreqie(
 527                                 drv, custom, iwe->u.data.length);
 528                         break;
 529                 case IWEVASSOCRESPIE:
 530                         if (custom + iwe->u.data.length > end) {
 531                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 532                                            "IWEVASSOCRESPIE length");
 533                                 return;
 534                         }
 535                         wpa_driver_wext_event_wireless_assocrespie(
 536                                 drv, custom, iwe->u.data.length);
 537                         break;
 538                 case IWEVPMKIDCAND:
 539                         if (custom + iwe->u.data.length > end) {
 540                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 541                                            "IWEVPMKIDCAND length");
 542                                 return;
 543                         }
 544                         wpa_driver_wext_event_wireless_pmkidcand(
 545                                 drv, custom, iwe->u.data.length);
 546                         break;
 547                 }
 548
 549                 pos += iwe->len;
 550         }
 551 }
 552
 553
 554 static void wpa_driver_wext_event_link(struct wpa_driver_wext_data *drv,
 555                                        char *buf, size_t len, int del)
 556 {
 557         union wpa_event_data event;
 558
 559         os_memset(&event, 0, sizeof(event));
 560         if (len > sizeof(event.interface_status.ifname))
 561                 len = sizeof(event.interface_status.ifname) - 1;
 562         os_memcpy(event.interface_status.ifname, buf, len);
 563         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 564                 EVENT_INTERFACE_ADDED;
 565
 566         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 567                    del ? "DEL" : "NEW",
 568                    event.interface_status.ifname,
 569                    del ? "removed" : "added");
 570
 571         if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
 572                 if (del) {
 573                         if (drv->if_removed) {
 574                                 wpa_printf(MSG_DEBUG, "WEXT: if_removed "
 575                                            "already set - ignore event");
 576                                 return;
 577                         }
 578                         drv->if_removed = 1;
 579                 } else {
 580                         if (if_nametoindex(drv->ifname) == 0) {
 581                                 wpa_printf(MSG_DEBUG, "WEXT: Interface %s "
 582                                            "does not exist - ignore "
 583                                            "RTM_NEWLINK",
 584                                            drv->ifname);
 585                                 return;
 586                         }
 587                         if (!drv->if_removed) {
 588                                 wpa_printf(MSG_DEBUG, "WEXT: if_removed "
 589                                            "already cleared - ignore event");
 590                                 return;
 591                         }
 592                         drv->if_removed = 0;
 593                 }
 594         }
 595
 596         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 597 }
 598
 599
 600 static int wpa_driver_wext_own_ifname(struct wpa_driver_wext_data *drv,
 601                                       u8 *buf, size_t len)
 602 {
 603         int attrlen, rta_len;
 604         struct rtattr *attr;
 605
 606         attrlen = len;
 607         attr = (struct rtattr *) buf;
 608
 609         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 610         while (RTA_OK(attr, attrlen)) {
 611                 if (attr->rta_type == IFLA_IFNAME) {
 612                         if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
 613                             == 0)
 614                                 return 1;
 615                         else
 616                                 break;
 617                 }
 618                 attr = RTA_NEXT(attr, attrlen);
 619         }
 620
 621         return 0;
 622 }
 623
 624
 625 static int wpa_driver_wext_own_ifindex(struct wpa_driver_wext_data *drv,
 626                                        int ifindex, u8 *buf, size_t len)
 627 {
 628         if (drv->ifindex == ifindex || drv->ifindex2 == ifindex)
 629                 return 1;
 630
 631         if (drv->if_removed && wpa_driver_wext_own_ifname(drv, buf, len)) {
 632                 drv->ifindex = if_nametoindex(drv->ifname);
 633                 wpa_printf(MSG_DEBUG, "WEXT: Update ifindex for a removed "
 634                            "interface");
 635                 wpa_driver_wext_finish_drv_init(drv);
 636                 return 1;
 637         }
 638
 639         return 0;
 640 }
 641
 642
 643 static void wpa_driver_wext_event_rtm_newlink(void *ctx, struct ifinfomsg *ifi,
 644                                               u8 *buf, size_t len)
 645 {
 646         struct wpa_driver_wext_data *drv = ctx;
 647         int attrlen, rta_len;
 648         struct rtattr *attr;
 649         char namebuf[IFNAMSIZ];
 650
 651         if (!wpa_driver_wext_own_ifindex(drv, ifi->ifi_index, buf, len)) {
 652                 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
 653                            ifi->ifi_index);
 654                 return;
 655         }
 656
 657         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 658                    "(%s%s%s%s)",
 659                    drv->operstate, ifi->ifi_flags,
 660                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 661                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 662                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 663                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 664
 665         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 666                 wpa_printf(MSG_DEBUG, "WEXT: Interface down");
 667                 drv->if_disabled = 1;
 668                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
 669         }
 670
 671         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 672                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 673                     linux_iface_up(drv->ioctl_sock, drv->ifname) == 0) {
 674                         wpa_printf(MSG_DEBUG, "WEXT: Ignore interface up "
 675                                    "event since interface %s is down",
 676                                    namebuf);
 677                 } else if (if_nametoindex(drv->ifname) == 0) {
 678                         wpa_printf(MSG_DEBUG, "WEXT: Ignore interface up "
 679                                    "event since interface %s does not exist",
 680                                    drv->ifname);
 681                 } else if (drv->if_removed) {
 682                         wpa_printf(MSG_DEBUG, "WEXT: Ignore interface up "
 683                                    "event since interface %s is marked "
 684                                    "removed", drv->ifname);
 685                 } else {
 686                         wpa_printf(MSG_DEBUG, "WEXT: Interface up");
 687                         drv->if_disabled = 0;
 688                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
 689                                              NULL);
 690                 }
 691         }
 692
 693         /*
 694          * Some drivers send the association event before the operup event--in
 695          * this case, lifting operstate in wpa_driver_wext_set_operstate()
 696          * fails. This will hit us when wpa_supplicant does not need to do
 697          * IEEE 802.1X authentication
 698          */
 699         if (drv->operstate == 1 &&
 700             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 701             !(ifi->ifi_flags & IFF_RUNNING))
 702                 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
 703                                        -1, IF_OPER_UP);
 704
 705         attrlen = len;
 706         attr = (struct rtattr *) buf;
 707
 708         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 709         while (RTA_OK(attr, attrlen)) {
 710                 if (attr->rta_type == IFLA_WIRELESS) {
 711                         wpa_driver_wext_event_wireless(
 712                                 drv, ((char *) attr) + rta_len,
 713                                 attr->rta_len - rta_len);
 714                 } else if (attr->rta_type == IFLA_IFNAME) {
 715                         wpa_driver_wext_event_link(drv,
 716                                                    ((char *) attr) + rta_len,
 717                                                    attr->rta_len - rta_len, 0);
 718                 }
 719                 attr = RTA_NEXT(attr, attrlen);
 720         }
 721 }
 722
 723
 724 static void wpa_driver_wext_event_rtm_dellink(void *ctx, struct ifinfomsg *ifi,
 725                                               u8 *buf, size_t len)
 726 {
 727         struct wpa_driver_wext_data *drv = ctx;
 728         int attrlen, rta_len;
 729         struct rtattr *attr;
 730
 731         attrlen = len;
 732         attr = (struct rtattr *) buf;
 733
 734         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 735         while (RTA_OK(attr, attrlen)) {
 736                 if (attr->rta_type == IFLA_IFNAME) {
 737                         wpa_driver_wext_event_link(drv,
 738                                                    ((char *) attr) + rta_len,
 739                                                    attr->rta_len - rta_len, 1);
 740                 }
 741                 attr = RTA_NEXT(attr, attrlen);
 742         }
 743 }
 744
 745
 746 static void wpa_driver_wext_rfkill_blocked(void *ctx)
 747 {
 748         wpa_printf(MSG_DEBUG, "WEXT: RFKILL blocked");
 749         /*
 750          * This may be for any interface; use ifdown event to disable
 751          * interface.
 752          */
 753 }
 754
 755
 756 static void wpa_driver_wext_rfkill_unblocked(void *ctx)
 757 {
 758         struct wpa_driver_wext_data *drv = ctx;
 759         wpa_printf(MSG_DEBUG, "WEXT: RFKILL unblocked");
 760         if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1)) {
 761                 wpa_printf(MSG_DEBUG, "WEXT: Could not set interface UP "
 762                            "after rfkill unblock");
 763                 return;
 764         }
 765         /* rtnetlink ifup handler will report interface as enabled */
 766 }
 767
 768
 769 static void wext_get_phy_name(struct wpa_driver_wext_data *drv)
 770 {
 771         /* Find phy (radio) to which this interface belongs */
 772         char buf[90], *pos;
 773         int f, rv;
 774
 775         drv->phyname[0] = '\0';
 776         snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name",
 777                  drv->ifname);
 778         f = open(buf, O_RDONLY);
 779         if (f < 0) {
 780                 wpa_printf(MSG_DEBUG, "Could not open file %s: %s",
 781                            buf, strerror(errno));
 782                 return;
 783         }
 784
 785         rv = read(f, drv->phyname, sizeof(drv->phyname) - 1);
 786         close(f);
 787         if (rv < 0) {
 788                 wpa_printf(MSG_DEBUG, "Could not read file %s: %s",
 789                            buf, strerror(errno));
 790                 return;
 791         }
 792
 793         drv->phyname[rv] = '\0';
 794         pos = os_strchr(drv->phyname, '\n');
 795         if (pos)
 796                 *pos = '\0';
 797         wpa_printf(MSG_DEBUG, "wext: interface %s phy: %s",
 798                    drv->ifname, drv->phyname);
 799 }
 800
 801
 802 /**
 803  * wpa_driver_wext_init - Initialize WE driver interface
 804  * @ctx: context to be used when calling wpa_supplicant functions,
 805  * e.g., wpa_supplicant_event()
 806  * @ifname: interface name, e.g., wlan0
 807  * Returns: Pointer to private data, %NULL on failure
 808  */
 809 void * wpa_driver_wext_init(void *ctx, const char *ifname)
 810 {
 811         struct wpa_driver_wext_data *drv;
 812         struct netlink_config *cfg;
 813         struct rfkill_config *rcfg;
 814         char path[128];
 815         struct stat buf;
 816
 817         drv = os_zalloc(sizeof(*drv));
 818         if (drv == NULL)
 819                 return NULL;
 820         drv->ctx = ctx;
 821         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
 822
 823         os_snprintf(path, sizeof(path), "/sys/class/net/%s/phy80211", ifname);
 824         if (stat(path, &buf) == 0) {
 825                 wpa_printf(MSG_DEBUG, "WEXT: cfg80211-based driver detected");
 826                 drv->cfg80211 = 1;
 827                 wext_get_phy_name(drv);
 828         }
 829
 830         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
 831         if (drv->ioctl_sock < 0) {
 832                 perror("socket(PF_INET,SOCK_DGRAM)");
 833                 goto err1;
 834         }
 835
 836         cfg = os_zalloc(sizeof(*cfg));
 837         if (cfg == NULL)
 838                 goto err1;
 839         cfg->ctx = drv;
 840         cfg->newlink_cb = wpa_driver_wext_event_rtm_newlink;
 841         cfg->dellink_cb = wpa_driver_wext_event_rtm_dellink;
 842         drv->netlink = netlink_init(cfg);
 843         if (drv->netlink == NULL) {
 844                 os_free(cfg);
 845                 goto err2;
 846         }
 847
 848         rcfg = os_zalloc(sizeof(*rcfg));
 849         if (rcfg == NULL)
 850                 goto err3;
 851         rcfg->ctx = drv;
 852         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
 853         rcfg->blocked_cb = wpa_driver_wext_rfkill_blocked;
 854         rcfg->unblocked_cb = wpa_driver_wext_rfkill_unblocked;
 855         drv->rfkill = rfkill_init(rcfg);
 856         if (drv->rfkill == NULL) {
 857                 wpa_printf(MSG_DEBUG, "WEXT: RFKILL status not available");
 858                 os_free(rcfg);
 859         }
 860
 861         drv->mlme_sock = -1;
 862
 863 #ifdef ANDROID
 864         drv->errors = 0;
 865         drv->driver_is_started = TRUE;
 866         drv->bgscan_enabled = 0;
 867 #endif /* ANDROID */
 868
 869         if (wpa_driver_wext_finish_drv_init(drv) < 0)
 870                 goto err3;
 871
 872         wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED, 1);
 873
 874         return drv;
 875
 876 err3:
 877         rfkill_deinit(drv->rfkill);
 878         netlink_deinit(drv->netlink);
 879 err2:
 880         close(drv->ioctl_sock);
 881 err1:
 882         os_free(drv);
 883         return NULL;
 884 }
 885
 886
 887 static void wpa_driver_wext_send_rfkill(void *eloop_ctx, void *timeout_ctx)
 888 {
 889         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
 890 }
 891
 892
 893 static int wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv)
 894 {
 895         int send_rfkill_event = 0;
 896
 897         if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1) < 0) {
 898                 if (rfkill_is_blocked(drv->rfkill)) {
 899                         wpa_printf(MSG_DEBUG, "WEXT: Could not yet enable "
 900                                    "interface '%s' due to rfkill",
 901                                    drv->ifname);
 902                         drv->if_disabled = 1;
 903                         send_rfkill_event = 1;
 904                 } else {
 905                         wpa_printf(MSG_ERROR, "WEXT: Could not set "
 906                                    "interface '%s' UP", drv->ifname);
 907                         return -1;
 908                 }
 909         }
 910
 911         /*
 912          * Make sure that the driver does not have any obsolete PMKID entries.
 913          */
 914         wpa_driver_wext_flush_pmkid(drv);
 915
 916         if (wpa_driver_wext_set_mode(drv, 0) < 0) {
 917                 wpa_printf(MSG_DEBUG, "Could not configure driver to use "
 918                            "managed mode");
 919                 /* Try to use it anyway */
 920         }
 921
 922         wpa_driver_wext_get_range(drv);
 923
 924         /*
 925          * Unlock the driver's BSSID and force to a random SSID to clear any
 926          * previous association the driver might have when the supplicant
 927          * starts up.
 928          */
 929         wpa_driver_wext_disconnect(drv);
 930
 931         drv->ifindex = if_nametoindex(drv->ifname);
 932
 933         if (os_strncmp(drv->ifname, "wlan", 4) == 0) {
 934                 /*
 935                  * Host AP driver may use both wlan# and wifi# interface in
 936                  * wireless events. Since some of the versions included WE-18
 937                  * support, let's add the alternative ifindex also from
 938                  * driver_wext.c for the time being. This may be removed at
 939                  * some point once it is believed that old versions of the
 940                  * driver are not in use anymore.
 941                  */
 942                 char ifname2[IFNAMSIZ + 1];
 943                 os_strlcpy(ifname2, drv->ifname, sizeof(ifname2));
 944                 os_memcpy(ifname2, "wifi", 4);
 945                 wpa_driver_wext_alternative_ifindex(drv, ifname2);
 946         }
 947
 948         netlink_send_oper_ifla(drv->netlink, drv->ifindex,
 949                                1, IF_OPER_DORMANT);
 950
 951         if (send_rfkill_event) {
 952                 eloop_register_timeout(0, 0, wpa_driver_wext_send_rfkill,
 953                                        drv, drv->ctx);
 954         }
 955
 956         return 0;
 957 }
 958
 959
 960 /**
 961  * wpa_driver_wext_deinit - Deinitialize WE driver interface
 962  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 963  *
 964  * Shut down driver interface and processing of driver events. Free
 965  * private data buffer if one was allocated in wpa_driver_wext_init().
 966  */
 967 void wpa_driver_wext_deinit(void *priv)
 968 {
 969         struct wpa_driver_wext_data *drv = priv;
 970
 971         wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED, 0);
 972
 973         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
 974
 975         /*
 976          * Clear possibly configured driver parameters in order to make it
 977          * easier to use the driver after wpa_supplicant has been terminated.
 978          */
 979         wpa_driver_wext_disconnect(drv);
 980
 981         netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
 982         netlink_deinit(drv->netlink);
 983         rfkill_deinit(drv->rfkill);
 984
 985         if (drv->mlme_sock >= 0)
 986                 eloop_unregister_read_sock(drv->mlme_sock);
 987
 988         (void) linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 0);
 989
 990         close(drv->ioctl_sock);
 991         if (drv->mlme_sock >= 0)
 992                 close(drv->mlme_sock);
 993         os_free(drv->assoc_req_ies);
 994         os_free(drv->assoc_resp_ies);
 995         os_free(drv);
 996 }
 997
 998
 999 /**
1000  * wpa_driver_wext_scan_timeout - Scan timeout to report scan completion
1001  * @eloop_ctx: Unused
1002  * @timeout_ctx: ctx argument given to wpa_driver_wext_init()
1003  *
1004  * This function can be used as registered timeout when starting a scan to
1005  * generate a scan completed event if the driver does not report this.
1006  */
1007 void wpa_driver_wext_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1008 {
1009         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1010         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1011 }
1012
1013
1014 /**
1015  * wpa_driver_wext_scan - Request the driver to initiate scan
1016  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1017  * @param: Scan parameters (specific SSID to scan for (ProbeReq), etc.)
1018  * Returns: 0 on success, -1 on failure
1019  */
1020 int wpa_driver_wext_scan(void *priv, struct wpa_driver_scan_params *params)
1021 {
1022         struct wpa_driver_wext_data *drv = priv;
1023         struct iwreq iwr;
1024         int ret = 0, timeout;
1025         struct iw_scan_req req;
1026         const u8 *ssid = params->ssids[0].ssid;
1027         size_t ssid_len = params->ssids[0].ssid_len;
1028
1029         if (ssid_len > IW_ESSID_MAX_SIZE) {
1030                 wpa_printf(MSG_DEBUG, "%s: too long SSID (%lu)",
1031                            __FUNCTION__, (unsigned long) ssid_len);
1032                 return -1;
1033         }
1034
1035         os_memset(&iwr, 0, sizeof(iwr));
1036         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1037
1038         if (ssid && ssid_len) {
1039                 os_memset(&req, 0, sizeof(req));
1040                 req.essid_len = ssid_len;
1041                 req.bssid.sa_family = ARPHRD_ETHER;
1042                 os_memset(req.bssid.sa_data, 0xff, ETH_ALEN);
1043                 os_memcpy(req.essid, ssid, ssid_len);
1044                 iwr.u.data.pointer = (caddr_t) &req;
1045                 iwr.u.data.length = sizeof(req);
1046                 iwr.u.data.flags = IW_SCAN_THIS_ESSID;
1047         }
1048
1049         if (ioctl(drv->ioctl_sock, SIOCSIWSCAN, &iwr) < 0) {
1050                 perror("ioctl[SIOCSIWSCAN]");
1051                 ret = -1;
1052         }
1053
1054         /* Not all drivers generate "scan completed" wireless event, so try to
1055          * read results after a timeout. */
1056         timeout = 10;
1057         if (drv->scan_complete_events) {
1058                 /*
1059                  * The driver seems to deliver SIOCGIWSCAN events to notify
1060                  * when scan is complete, so use longer timeout to avoid race
1061                  * conditions with scanning and following association request.
1062                  */
1063                 timeout = 30;
1064         }
1065         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1066                    "seconds", ret, timeout);
1067         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
1068         eloop_register_timeout(timeout, 0, wpa_driver_wext_scan_timeout, drv,
1069                                drv->ctx);
1070
1071         return ret;
1072 }
1073
1074
1075 static u8 * wpa_driver_wext_giwscan(struct wpa_driver_wext_data *drv,
1076                                     size_t *len)
1077 {
1078         struct iwreq iwr;
1079         u8 *res_buf;
1080         size_t res_buf_len;
1081
1082         res_buf_len = IW_SCAN_MAX_DATA;
1083         for (;;) {
1084                 res_buf = os_malloc(res_buf_len);
1085                 if (res_buf == NULL)
1086                         return NULL;
1087                 os_memset(&iwr, 0, sizeof(iwr));
1088                 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1089                 iwr.u.data.pointer = res_buf;
1090                 iwr.u.data.length = res_buf_len;
1091
1092                 if (ioctl(drv->ioctl_sock, SIOCGIWSCAN, &iwr) == 0)
1093                         break;
1094
1095                 if (errno == E2BIG && res_buf_len < 65535) {
1096                         os_free(res_buf);
1097                         res_buf = NULL;
1098                         res_buf_len *= 2;
1099                         if (res_buf_len > 65535)
1100                                 res_buf_len = 65535; /* 16-bit length field */
1101                         wpa_printf(MSG_DEBUG, "Scan results did not fit - "
1102                                    "trying larger buffer (%lu bytes)",
1103                                    (unsigned long) res_buf_len);
1104                 } else {
1105                         perror("ioctl[SIOCGIWSCAN]");
1106                         os_free(res_buf);
1107                         return NULL;
1108                 }
1109         }
1110
1111         if (iwr.u.data.length > res_buf_len) {
1112                 os_free(res_buf);
1113                 return NULL;
1114         }
1115         *len = iwr.u.data.length;
1116
1117         return res_buf;
1118 }
1119
1120
1121 /*
1122  * Data structure for collecting WEXT scan results. This is needed to allow
1123  * the various methods of reporting IEs to be combined into a single IE buffer.
1124  */
1125 struct wext_scan_data {
1126         struct wpa_scan_res res;
1127         u8 *ie;
1128         size_t ie_len;
1129         u8 ssid[32];
1130         size_t ssid_len;
1131         int maxrate;
1132 };
1133
1134
1135 static void wext_get_scan_mode(struct iw_event *iwe,
1136                                struct wext_scan_data *res)
1137 {
1138         if (iwe->u.mode == IW_MODE_ADHOC)
1139                 res->res.caps |= IEEE80211_CAP_IBSS;
1140         else if (iwe->u.mode == IW_MODE_MASTER || iwe->u.mode == IW_MODE_INFRA)
1141                 res->res.caps |= IEEE80211_CAP_ESS;
1142 }
1143
1144
1145 static void wext_get_scan_ssid(struct iw_event *iwe,
1146                                struct wext_scan_data *res, char *custom,
1147                                char *end)
1148 {
1149         int ssid_len = iwe->u.essid.length;
1150         if (custom + ssid_len > end)
1151                 return;
1152         if (iwe->u.essid.flags &&
1153             ssid_len > 0 &&
1154             ssid_len <= IW_ESSID_MAX_SIZE) {
1155                 os_memcpy(res->ssid, custom, ssid_len);
1156                 res->ssid_len = ssid_len;
1157         }
1158 }
1159
1160
1161 static void wext_get_scan_freq(struct iw_event *iwe,
1162                                struct wext_scan_data *res)
1163 {
1164         int divi = 1000000, i;
1165
1166         if (iwe->u.freq.e == 0) {
1167                 /*
1168                  * Some drivers do not report frequency, but a channel.
1169                  * Try to map this to frequency by assuming they are using
1170                  * IEEE 802.11b/g.  But don't overwrite a previously parsed
1171                  * frequency if the driver sends both frequency and channel,
1172                  * since the driver may be sending an A-band channel that we
1173                  * don't handle here.
1174                  */
1175
1176                 if (res->res.freq)
1177                         return;
1178
1179                 if (iwe->u.freq.m >= 1 && iwe->u.freq.m <= 13) {
1180                         res->res.freq = 2407 + 5 * iwe->u.freq.m;
1181                         return;
1182                 } else if (iwe->u.freq.m == 14) {
1183                         res->res.freq = 2484;
1184                         return;
1185                 }
1186         }
1187
1188         if (iwe->u.freq.e > 6) {
1189                 wpa_printf(MSG_DEBUG, "Invalid freq in scan results (BSSID="
1190                            MACSTR " m=%d e=%d)",
1191                            MAC2STR(res->res.bssid), iwe->u.freq.m,
1192                            iwe->u.freq.e);
1193                 return;
1194         }
1195
1196         for (i = 0; i < iwe->u.freq.e; i++)
1197                 divi /= 10;
1198         res->res.freq = iwe->u.freq.m / divi;
1199 }
1200
1201
1202 static void wext_get_scan_qual(struct wpa_driver_wext_data *drv,
1203                                struct iw_event *iwe,
1204                                struct wext_scan_data *res)
1205 {
1206         res->res.qual = iwe->u.qual.qual;
1207         res->res.noise = iwe->u.qual.noise;
1208         res->res.level = iwe->u.qual.level;
1209         if (iwe->u.qual.updated & IW_QUAL_QUAL_INVALID)
1210                 res->res.flags |= WPA_SCAN_QUAL_INVALID;
1211         if (iwe->u.qual.updated & IW_QUAL_LEVEL_INVALID)
1212                 res->res.flags |= WPA_SCAN_LEVEL_INVALID;
1213         if (iwe->u.qual.updated & IW_QUAL_NOISE_INVALID)
1214                 res->res.flags |= WPA_SCAN_NOISE_INVALID;
1215         if (iwe->u.qual.updated & IW_QUAL_DBM)
1216                 res->res.flags |= WPA_SCAN_LEVEL_DBM;
1217         if ((iwe->u.qual.updated & IW_QUAL_DBM) ||
1218             ((iwe->u.qual.level != 0) &&
1219              (iwe->u.qual.level > drv->max_level))) {
1220                 if (iwe->u.qual.level >= 64)
1221                         res->res.level -= 0x100;
1222                 if (iwe->u.qual.noise >= 64)
1223                         res->res.noise -= 0x100;
1224         }
1225 }
1226
1227
1228 static void wext_get_scan_encode(struct iw_event *iwe,
1229                                  struct wext_scan_data *res)
1230 {
1231         if (!(iwe->u.data.flags & IW_ENCODE_DISABLED))
1232                 res->res.caps |= IEEE80211_CAP_PRIVACY;
1233 }
1234
1235
1236 static void wext_get_scan_rate(struct iw_event *iwe,
1237                                struct wext_scan_data *res, char *pos,
1238                                char *end)
1239 {
1240         int maxrate;
1241         char *custom = pos + IW_EV_LCP_LEN;
1242         struct iw_param p;
1243         size_t clen;
1244
1245         clen = iwe->len;
1246         if (custom + clen > end)
1247                 return;
1248         maxrate = 0;
1249         while (((ssize_t) clen) >= (ssize_t) sizeof(struct iw_param)) {
1250                 /* Note: may be misaligned, make a local, aligned copy */
1251                 os_memcpy(&p, custom, sizeof(struct iw_param));
1252                 if (p.value > maxrate)
1253                         maxrate = p.value;
1254                 clen -= sizeof(struct iw_param);
1255                 custom += sizeof(struct iw_param);
1256         }
1257
1258         /* Convert the maxrate from WE-style (b/s units) to
1259          * 802.11 rates (500000 b/s units).
1260          */
1261         res->maxrate = maxrate / 500000;
1262 }
1263
1264
1265 static void wext_get_scan_iwevgenie(struct iw_event *iwe,
1266                                     struct wext_scan_data *res, char *custom,
1267                                     char *end)
1268 {
1269         char *genie, *gpos, *gend;
1270         u8 *tmp;
1271
1272         if (iwe->u.data.length == 0)
1273                 return;
1274
1275         gpos = genie = custom;
1276         gend = genie + iwe->u.data.length;
1277         if (gend > end) {
1278                 wpa_printf(MSG_INFO, "IWEVGENIE overflow");
1279                 return;
1280         }
1281
1282         tmp = os_realloc(res->ie, res->ie_len + gend - gpos);
1283         if (tmp == NULL)
1284                 return;
1285         os_memcpy(tmp + res->ie_len, gpos, gend - gpos);
1286         res->ie = tmp;
1287         res->ie_len += gend - gpos;
1288 }
1289
1290
1291 static void wext_get_scan_custom(struct iw_event *iwe,
1292                                  struct wext_scan_data *res, char *custom,
1293                                  char *end)
1294 {
1295         size_t clen;
1296         u8 *tmp;
1297
1298         clen = iwe->u.data.length;
1299         if (custom + clen > end)
1300                 return;
1301
1302         if (clen > 7 && os_strncmp(custom, "wpa_ie=", 7) == 0) {
1303                 char *spos;
1304                 int bytes;
1305                 spos = custom + 7;
1306                 bytes = custom + clen - spos;
1307                 if (bytes & 1 || bytes == 0)
1308                         return;
1309                 bytes /= 2;
1310                 tmp = os_realloc(res->ie, res->ie_len + bytes);
1311                 if (tmp == NULL)
1312                         return;
1313                 res->ie = tmp;
1314                 if (hexstr2bin(spos, tmp + res->ie_len, bytes) < 0)
1315                         return;
1316                 res->ie_len += bytes;
1317         } else if (clen > 7 && os_strncmp(custom, "rsn_ie=", 7) == 0) {
1318                 char *spos;
1319                 int bytes;
1320                 spos = custom + 7;
1321                 bytes = custom + clen - spos;
1322                 if (bytes & 1 || bytes == 0)
1323                         return;
1324                 bytes /= 2;
1325                 tmp = os_realloc(res->ie, res->ie_len + bytes);
1326                 if (tmp == NULL)
1327                         return;
1328                 res->ie = tmp;
1329                 if (hexstr2bin(spos, tmp + res->ie_len, bytes) < 0)
1330                         return;
1331                 res->ie_len += bytes;
1332         } else if (clen > 4 && os_strncmp(custom, "tsf=", 4) == 0) {
1333                 char *spos;
1334                 int bytes;
1335                 u8 bin[8];
1336                 spos = custom + 4;
1337                 bytes = custom + clen - spos;
1338                 if (bytes != 16) {
1339                         wpa_printf(MSG_INFO, "Invalid TSF length (%d)", bytes);
1340                         return;
1341                 }
1342                 bytes /= 2;
1343                 if (hexstr2bin(spos, bin, bytes) < 0) {
1344                         wpa_printf(MSG_DEBUG, "WEXT: Invalid TSF value");
1345                         return;
1346                 }
1347                 res->res.tsf += WPA_GET_BE64(bin);
1348         }
1349 }
1350
1351
1352 static int wext_19_iw_point(struct wpa_driver_wext_data *drv, u16 cmd)
1353 {
1354         return drv->we_version_compiled > 18 &&
1355                 (cmd == SIOCGIWESSID || cmd == SIOCGIWENCODE ||
1356                  cmd == IWEVGENIE || cmd == IWEVCUSTOM);
1357 }
1358
1359
1360 static void wpa_driver_wext_add_scan_entry(struct wpa_scan_results *res,
1361                                            struct wext_scan_data *data)
1362 {
1363         struct wpa_scan_res **tmp;
1364         struct wpa_scan_res *r;
1365         size_t extra_len;
1366         u8 *pos, *end, *ssid_ie = NULL, *rate_ie = NULL;
1367
1368         /* Figure out whether we need to fake any IEs */
1369         pos = data->ie;
1370         end = pos + data->ie_len;
1371         while (pos && pos + 1 < end) {
1372                 if (pos + 2 + pos[1] > end)
1373                         break;
1374                 if (pos[0] == WLAN_EID_SSID)
1375                         ssid_ie = pos;
1376                 else if (pos[0] == WLAN_EID_SUPP_RATES)
1377                         rate_ie = pos;
1378                 else if (pos[0] == WLAN_EID_EXT_SUPP_RATES)
1379                         rate_ie = pos;
1380                 pos += 2 + pos[1];
1381         }
1382
1383         extra_len = 0;
1384         if (ssid_ie == NULL)
1385                 extra_len += 2 + data->ssid_len;
1386         if (rate_ie == NULL && data->maxrate)
1387                 extra_len += 3;
1388
1389         r = os_zalloc(sizeof(*r) + extra_len + data->ie_len);
1390         if (r == NULL)
1391                 return;
1392         os_memcpy(r, &data->res, sizeof(*r));
1393         r->ie_len = extra_len + data->ie_len;
1394         pos = (u8 *) (r + 1);
1395         if (ssid_ie == NULL) {
1396                 /*
1397                  * Generate a fake SSID IE since the driver did not report
1398                  * a full IE list.
1399                  */
1400                 *pos++ = WLAN_EID_SSID;
1401                 *pos++ = data->ssid_len;
1402                 os_memcpy(pos, data->ssid, data->ssid_len);
1403                 pos += data->ssid_len;
1404         }
1405         if (rate_ie == NULL && data->maxrate) {
1406                 /*
1407                  * Generate a fake Supported Rates IE since the driver did not
1408                  * report a full IE list.
1409                  */
1410                 *pos++ = WLAN_EID_SUPP_RATES;
1411                 *pos++ = 1;
1412                 *pos++ = data->maxrate;
1413         }
1414         if (data->ie)
1415                 os_memcpy(pos, data->ie, data->ie_len);
1416
1417         tmp = os_realloc_array(res->res, res->num + 1,
1418                                sizeof(struct wpa_scan_res *));
1419         if (tmp == NULL) {
1420                 os_free(r);
1421                 return;
1422         }
1423         tmp[res->num++] = r;
1424         res->res = tmp;
1425 }
1426
1427
1428 /**
1429  * wpa_driver_wext_get_scan_results - Fetch the latest scan results
1430  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1431  * Returns: Scan results on success, -1 on failure
1432  */
1433 struct wpa_scan_results * wpa_driver_wext_get_scan_results(void *priv)
1434 {
1435         struct wpa_driver_wext_data *drv = priv;
1436         size_t len;
1437         int first;
1438         u8 *res_buf;
1439         struct iw_event iwe_buf, *iwe = &iwe_buf;
1440         char *pos, *end, *custom;
1441         struct wpa_scan_results *res;
1442         struct wext_scan_data data;
1443
1444         res_buf = wpa_driver_wext_giwscan(drv, &len);
1445         if (res_buf == NULL)
1446                 return NULL;
1447
1448         first = 1;
1449
1450         res = os_zalloc(sizeof(*res));
1451         if (res == NULL) {
1452                 os_free(res_buf);
1453                 return NULL;
1454         }
1455
1456         pos = (char *) res_buf;
1457         end = (char *) res_buf + len;
1458         os_memset(&data, 0, sizeof(data));
1459
1460         while (pos + IW_EV_LCP_LEN <= end) {
1461                 /* Event data may be unaligned, so make a local, aligned copy
1462                  * before processing. */
1463                 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
1464                 if (iwe->len <= IW_EV_LCP_LEN)
1465                         break;
1466
1467                 custom = pos + IW_EV_POINT_LEN;
1468                 if (wext_19_iw_point(drv, iwe->cmd)) {
1469                         /* WE-19 removed the pointer from struct iw_point */
1470                         char *dpos = (char *) &iwe_buf.u.data.length;
1471                         int dlen = dpos - (char *) &iwe_buf;
1472                         os_memcpy(dpos, pos + IW_EV_LCP_LEN,
1473                                   sizeof(struct iw_event) - dlen);
1474                 } else {
1475                         os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
1476                         custom += IW_EV_POINT_OFF;
1477                 }
1478
1479                 switch (iwe->cmd) {
1480                 case SIOCGIWAP:
1481                         if (!first)
1482                                 wpa_driver_wext_add_scan_entry(res, &data);
1483                         first = 0;
1484                         os_free(data.ie);
1485                         os_memset(&data, 0, sizeof(data));
1486                         os_memcpy(data.res.bssid,
1487                                   iwe->u.ap_addr.sa_data, ETH_ALEN);
1488                         break;
1489                 case SIOCGIWMODE:
1490                         wext_get_scan_mode(iwe, &data);
1491                         break;
1492                 case SIOCGIWESSID:
1493                         wext_get_scan_ssid(iwe, &data, custom, end);
1494                         break;
1495                 case SIOCGIWFREQ:
1496                         wext_get_scan_freq(iwe, &data);
1497                         break;
1498                 case IWEVQUAL:
1499                         wext_get_scan_qual(drv, iwe, &data);
1500                         break;
1501                 case SIOCGIWENCODE:
1502                         wext_get_scan_encode(iwe, &data);
1503                         break;
1504                 case SIOCGIWRATE:
1505                         wext_get_scan_rate(iwe, &data, pos, end);
1506                         break;
1507                 case IWEVGENIE:
1508                         wext_get_scan_iwevgenie(iwe, &data, custom, end);
1509                         break;
1510                 case IWEVCUSTOM:
1511                         wext_get_scan_custom(iwe, &data, custom, end);
1512                         break;
1513                 }
1514
1515                 pos += iwe->len;
1516         }
1517         os_free(res_buf);
1518         res_buf = NULL;
1519         if (!first)
1520                 wpa_driver_wext_add_scan_entry(res, &data);
1521         os_free(data.ie);
1522
1523         wpa_printf(MSG_DEBUG, "Received %lu bytes of scan results (%lu BSSes)",
1524                    (unsigned long) len, (unsigned long) res->num);
1525
1526         return res;
1527 }
1528
1529
1530 static int wpa_driver_wext_get_range(void *priv)
1531 {
1532         struct wpa_driver_wext_data *drv = priv;
1533         struct iw_range *range;
1534         struct iwreq iwr;
1535         int minlen;
1536         size_t buflen;
1537
1538         /*
1539          * Use larger buffer than struct iw_range in order to allow the
1540          * structure to grow in the future.
1541          */
1542         buflen = sizeof(struct iw_range) + 500;
1543         range = os_zalloc(buflen);
1544         if (range == NULL)
1545                 return -1;
1546
1547         os_memset(&iwr, 0, sizeof(iwr));
1548         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1549         iwr.u.data.pointer = (caddr_t) range;
1550         iwr.u.data.length = buflen;
1551
1552         minlen = ((char *) &range->enc_capa) - (char *) range +
1553                 sizeof(range->enc_capa);
1554
1555         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1556                 perror("ioctl[SIOCGIWRANGE]");
1557                 os_free(range);
1558                 return -1;
1559         } else if (iwr.u.data.length >= minlen &&
1560                    range->we_version_compiled >= 18) {
1561                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1562                            "WE(source)=%d enc_capa=0x%x",
1563                            range->we_version_compiled,
1564                            range->we_version_source,
1565                            range->enc_capa);
1566                 drv->has_capability = 1;
1567                 drv->we_version_compiled = range->we_version_compiled;
1568                 if (range->enc_capa & IW_ENC_CAPA_WPA) {
1569                         drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1570                                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1571                 }
1572                 if (range->enc_capa & IW_ENC_CAPA_WPA2) {
1573                         drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1574                                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1575                 }
1576                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1577                         WPA_DRIVER_CAPA_ENC_WEP104;
1578                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP128;
1579                 if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP)
1580                         drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1581                 if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP)
1582                         drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1583                 if (range->enc_capa & IW_ENC_CAPA_4WAY_HANDSHAKE)
1584                         drv->capa.flags |= WPA_DRIVER_FLAGS_4WAY_HANDSHAKE;
1585                 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1586                         WPA_DRIVER_AUTH_SHARED |
1587                         WPA_DRIVER_AUTH_LEAP;
1588                 drv->capa.max_scan_ssids = 1;
1589
1590                 wpa_printf(MSG_DEBUG, "  capabilities: key_mgmt 0x%x enc 0x%x "
1591                            "flags 0x%x",
1592                            drv->capa.key_mgmt, drv->capa.enc, drv->capa.flags);
1593         } else {
1594                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - "
1595                            "assuming WPA is not supported");
1596         }
1597
1598         drv->max_level = range->max_qual.level;
1599
1600         os_free(range);
1601         return 0;
1602 }
1603
1604
1605 static int wpa_driver_wext_set_psk(struct wpa_driver_wext_data *drv,
1606                                    const u8 *psk)
1607 {
1608         struct iw_encode_ext *ext;
1609         struct iwreq iwr;
1610         int ret;
1611
1612         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1613
1614         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1615                 return 0;
1616
1617         if (!psk)
1618                 return 0;
1619
1620         os_memset(&iwr, 0, sizeof(iwr));
1621         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1622
1623         ext = os_zalloc(sizeof(*ext) + PMK_LEN);
1624         if (ext == NULL)
1625                 return -1;
1626
1627         iwr.u.encoding.pointer = (caddr_t) ext;
1628         iwr.u.encoding.length = sizeof(*ext) + PMK_LEN;
1629         ext->key_len = PMK_LEN;
1630         os_memcpy(&ext->key, psk, ext->key_len);
1631         ext->alg = IW_ENCODE_ALG_PMK;
1632
1633         ret = ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr);
1634         if (ret < 0)
1635                 perror("ioctl[SIOCSIWENCODEEXT] PMK");
1636         os_free(ext);
1637
1638         return ret;
1639 }
1640
1641
1642 static int wpa_driver_wext_set_key_ext(void *priv, enum wpa_alg alg,
1643                                        const u8 *addr, int key_idx,
1644                                        int set_tx, const u8 *seq,
1645                                        size_t seq_len,
1646                                        const u8 *key, size_t key_len)
1647 {
1648         struct wpa_driver_wext_data *drv = priv;
1649         struct iwreq iwr;
1650         int ret = 0;
1651         struct iw_encode_ext *ext;
1652
1653         if (seq_len > IW_ENCODE_SEQ_MAX_SIZE) {
1654                 wpa_printf(MSG_DEBUG, "%s: Invalid seq_len %lu",
1655                            __FUNCTION__, (unsigned long) seq_len);
1656                 return -1;
1657         }
1658
1659         ext = os_zalloc(sizeof(*ext) + key_len);
1660         if (ext == NULL)
1661                 return -1;
1662         os_memset(&iwr, 0, sizeof(iwr));
1663         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1664         iwr.u.encoding.flags = key_idx + 1;
1665         iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1666         if (alg == WPA_ALG_NONE)
1667                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1668         iwr.u.encoding.pointer = (caddr_t) ext;
1669         iwr.u.encoding.length = sizeof(*ext) + key_len;
1670
1671         if (addr == NULL || is_broadcast_ether_addr(addr))
1672                 ext->ext_flags |= IW_ENCODE_EXT_GROUP_KEY;
1673         if (set_tx)
1674                 ext->ext_flags |= IW_ENCODE_EXT_SET_TX_KEY;
1675
1676         ext->addr.sa_family = ARPHRD_ETHER;
1677         if (addr)
1678                 os_memcpy(ext->addr.sa_data, addr, ETH_ALEN);
1679         else
1680                 os_memset(ext->addr.sa_data, 0xff, ETH_ALEN);
1681         if (key && key_len) {
1682                 os_memcpy(ext + 1, key, key_len);
1683                 ext->key_len = key_len;
1684         }
1685         switch (alg) {
1686         case WPA_ALG_NONE:
1687                 ext->alg = IW_ENCODE_ALG_NONE;
1688                 break;
1689         case WPA_ALG_WEP:
1690                 ext->alg = IW_ENCODE_ALG_WEP;
1691                 break;
1692         case WPA_ALG_TKIP:
1693                 ext->alg = IW_ENCODE_ALG_TKIP;
1694                 break;
1695         case WPA_ALG_CCMP:
1696                 ext->alg = IW_ENCODE_ALG_CCMP;
1697                 break;
1698         case WPA_ALG_PMK:
1699                 ext->alg = IW_ENCODE_ALG_PMK;
1700                 break;
1701 #ifdef CONFIG_IEEE80211W
1702         case WPA_ALG_IGTK:
1703                 ext->alg = IW_ENCODE_ALG_AES_CMAC;
1704                 break;
1705 #endif /* CONFIG_IEEE80211W */
1706         default:
1707                 wpa_printf(MSG_DEBUG, "%s: Unknown algorithm %d",
1708                            __FUNCTION__, alg);
1709                 os_free(ext);
1710                 return -1;
1711         }
1712
1713         if (seq && seq_len) {
1714                 ext->ext_flags |= IW_ENCODE_EXT_RX_SEQ_VALID;
1715                 os_memcpy(ext->rx_seq, seq, seq_len);
1716         }
1717
1718         if (ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr) < 0) {
1719                 ret = errno == EOPNOTSUPP ? -2 : -1;
1720                 if (errno == ENODEV) {
1721                         /*
1722                          * ndiswrapper seems to be returning incorrect error
1723                          * code.. */
1724                         ret = -2;
1725                 }
1726
1727                 perror("ioctl[SIOCSIWENCODEEXT]");
1728         }
1729
1730         os_free(ext);
1731         return ret;
1732 }
1733
1734
1735 /**
1736  * wpa_driver_wext_set_key - Configure encryption key
1737  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1738  * @priv: Private driver interface data
1739  * @alg: Encryption algorithm (%WPA_ALG_NONE, %WPA_ALG_WEP,
1740  *      %WPA_ALG_TKIP, %WPA_ALG_CCMP); %WPA_ALG_NONE clears the key.
1741  * @addr: Address of the peer STA or ff:ff:ff:ff:ff:ff for
1742  *      broadcast/default keys
1743  * @key_idx: key index (0..3), usually 0 for unicast keys
1744  * @set_tx: Configure this key as the default Tx key (only used when
1745  *      driver does not support separate unicast/individual key
1746  * @seq: Sequence number/packet number, seq_len octets, the next
1747  *      packet number to be used for in replay protection; configured
1748  *      for Rx keys (in most cases, this is only used with broadcast
1749  *      keys and set to zero for unicast keys)
1750  * @seq_len: Length of the seq, depends on the algorithm:
1751  *      TKIP: 6 octets, CCMP: 6 octets
1752  * @key: Key buffer; TKIP: 16-byte temporal key, 8-byte Tx Mic key,
1753  *      8-byte Rx Mic Key
1754  * @key_len: Length of the key buffer in octets (WEP: 5 or 13,
1755  *      TKIP: 32, CCMP: 16)
1756  * Returns: 0 on success, -1 on failure
1757  *
1758  * This function uses SIOCSIWENCODEEXT by default, but tries to use
1759  * SIOCSIWENCODE if the extended ioctl fails when configuring a WEP key.
1760  */
1761 int wpa_driver_wext_set_key(const char *ifname, void *priv, enum wpa_alg alg,
1762                             const u8 *addr, int key_idx,
1763                             int set_tx, const u8 *seq, size_t seq_len,
1764                             const u8 *key, size_t key_len)
1765 {
1766         struct wpa_driver_wext_data *drv = priv;
1767         struct iwreq iwr;
1768         int ret = 0;
1769
1770         wpa_printf(MSG_DEBUG, "%s: alg=%d key_idx=%d set_tx=%d seq_len=%lu "
1771                    "key_len=%lu",
1772                    __FUNCTION__, alg, key_idx, set_tx,
1773                    (unsigned long) seq_len, (unsigned long) key_len);
1774
1775         ret = wpa_driver_wext_set_key_ext(drv, alg, addr, key_idx, set_tx,
1776                                           seq, seq_len, key, key_len);
1777         if (ret == 0)
1778                 return 0;
1779
1780         if (ret == -2 &&
1781             (alg == WPA_ALG_NONE || alg == WPA_ALG_WEP)) {
1782                 wpa_printf(MSG_DEBUG, "Driver did not support "
1783                            "SIOCSIWENCODEEXT, trying SIOCSIWENCODE");
1784                 ret = 0;
1785         } else {
1786                 wpa_printf(MSG_DEBUG, "Driver did not support "
1787                            "SIOCSIWENCODEEXT");
1788                 return ret;
1789         }
1790
1791         os_memset(&iwr, 0, sizeof(iwr));
1792         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1793         iwr.u.encoding.flags = key_idx + 1;
1794         iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1795         if (alg == WPA_ALG_NONE)
1796                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1797         iwr.u.encoding.pointer = (caddr_t) key;
1798         iwr.u.encoding.length = key_len;
1799
1800         if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1801                 perror("ioctl[SIOCSIWENCODE]");
1802                 ret = -1;
1803         }
1804
1805         if (set_tx && alg != WPA_ALG_NONE) {
1806                 os_memset(&iwr, 0, sizeof(iwr));
1807                 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1808                 iwr.u.encoding.flags = key_idx + 1;
1809                 iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1810                 iwr.u.encoding.pointer = (caddr_t) NULL;
1811                 iwr.u.encoding.length = 0;
1812                 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1813                         perror("ioctl[SIOCSIWENCODE] (set_tx)");
1814                         ret = -1;
1815                 }
1816         }
1817
1818         return ret;
1819 }
1820
1821
1822 static int wpa_driver_wext_set_countermeasures(void *priv,
1823                                                int enabled)
1824 {
1825         struct wpa_driver_wext_data *drv = priv;
1826         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1827         return wpa_driver_wext_set_auth_param(drv,
1828                                               IW_AUTH_TKIP_COUNTERMEASURES,
1829                                               enabled);
1830 }
1831
1832
1833 static int wpa_driver_wext_set_drop_unencrypted(void *priv,
1834                                                 int enabled)
1835 {
1836         struct wpa_driver_wext_data *drv = priv;
1837         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1838         drv->use_crypt = enabled;
1839         return wpa_driver_wext_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
1840                                               enabled);
1841 }
1842
1843
1844 static int wpa_driver_wext_mlme(struct wpa_driver_wext_data *drv,
1845                                 const u8 *addr, int cmd, int reason_code)
1846 {
1847         struct iwreq iwr;
1848         struct iw_mlme mlme;
1849         int ret = 0;
1850
1851         os_memset(&iwr, 0, sizeof(iwr));
1852         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1853         os_memset(&mlme, 0, sizeof(mlme));
1854         mlme.cmd = cmd;
1855         mlme.reason_code = reason_code;
1856         mlme.addr.sa_family = ARPHRD_ETHER;
1857         os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN);
1858         iwr.u.data.pointer = (caddr_t) &mlme;
1859         iwr.u.data.length = sizeof(mlme);
1860
1861         if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) {
1862                 perror("ioctl[SIOCSIWMLME]");
1863                 ret = -1;
1864         }
1865
1866         return ret;
1867 }
1868
1869
1870 static void wpa_driver_wext_disconnect(struct wpa_driver_wext_data *drv)
1871 {
1872         struct iwreq iwr;
1873         const u8 null_bssid[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
1874 #ifndef ANDROID
1875         u8 ssid[32];
1876         int i;
1877 #endif /* ANDROID */
1878
1879         /*
1880          * Only force-disconnect when the card is in infrastructure mode,
1881          * otherwise the driver might interpret the cleared BSSID and random
1882          * SSID as an attempt to create a new ad-hoc network.
1883          */
1884         os_memset(&iwr, 0, sizeof(iwr));
1885         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1886         if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
1887                 perror("ioctl[SIOCGIWMODE]");
1888                 iwr.u.mode = IW_MODE_INFRA;
1889         }
1890
1891         if (iwr.u.mode == IW_MODE_INFRA) {
1892                 /* Clear the BSSID selection */
1893                 if (wpa_driver_wext_set_bssid(drv, null_bssid) < 0) {
1894                         wpa_printf(MSG_DEBUG, "WEXT: Failed to clear BSSID "
1895                                    "selection on disconnect");
1896                 }
1897
1898 #ifndef ANDROID
1899                 if (drv->cfg80211) {
1900                         /*
1901                          * cfg80211 supports SIOCSIWMLME commands, so there is
1902                          * no need for the random SSID hack, but clear the
1903                          * SSID.
1904                          */
1905                         if (wpa_driver_wext_set_ssid(drv, (u8 *) "", 0) < 0) {
1906                                 wpa_printf(MSG_DEBUG, "WEXT: Failed to clear "
1907                                            "SSID on disconnect");
1908                         }
1909                         return;
1910                 }
1911
1912                 /*
1913                  * Set a random SSID to make sure the driver will not be trying
1914                  * to associate with something even if it does not understand
1915                  * SIOCSIWMLME commands (or tries to associate automatically
1916                  * after deauth/disassoc).
1917                  */
1918                 for (i = 0; i < 32; i++)
1919                         ssid[i] = rand() & 0xFF;
1920                 if (wpa_driver_wext_set_ssid(drv, ssid, 32) < 0) {
1921                         wpa_printf(MSG_DEBUG, "WEXT: Failed to set bogus "
1922                                    "SSID to disconnect");
1923                 }
1924 #endif /* ANDROID */
1925         }
1926 }
1927
1928
1929 static int wpa_driver_wext_deauthenticate(void *priv, const u8 *addr,
1930                                           int reason_code)
1931 {
1932         struct wpa_driver_wext_data *drv = priv;
1933         int ret;
1934         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1935         ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DEAUTH, reason_code);
1936         wpa_driver_wext_disconnect(drv);
1937         return ret;
1938 }
1939
1940
1941 static int wpa_driver_wext_disassociate(void *priv, const u8 *addr,
1942                                         int reason_code)
1943 {
1944         struct wpa_driver_wext_data *drv = priv;
1945         int ret;
1946         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1947         ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DISASSOC, reason_code);
1948         wpa_driver_wext_disconnect(drv);
1949         return ret;
1950 }
1951
1952
1953 static int wpa_driver_wext_set_gen_ie(void *priv, const u8 *ie,
1954                                       size_t ie_len)
1955 {
1956         struct wpa_driver_wext_data *drv = priv;
1957         struct iwreq iwr;
1958         int ret = 0;
1959
1960         os_memset(&iwr, 0, sizeof(iwr));
1961         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1962         iwr.u.data.pointer = (caddr_t) ie;
1963         iwr.u.data.length = ie_len;
1964
1965         if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) {
1966                 perror("ioctl[SIOCSIWGENIE]");
1967                 ret = -1;
1968         }
1969
1970         return ret;
1971 }
1972
1973
1974 int wpa_driver_wext_cipher2wext(int cipher)
1975 {
1976         switch (cipher) {
1977         case CIPHER_NONE:
1978                 return IW_AUTH_CIPHER_NONE;
1979         case CIPHER_WEP40:
1980                 return IW_AUTH_CIPHER_WEP40;
1981         case CIPHER_TKIP:
1982                 return IW_AUTH_CIPHER_TKIP;
1983         case CIPHER_CCMP:
1984                 return IW_AUTH_CIPHER_CCMP;
1985         case CIPHER_WEP104:
1986                 return IW_AUTH_CIPHER_WEP104;
1987         default:
1988                 return 0;
1989         }
1990 }
1991
1992
1993 int wpa_driver_wext_keymgmt2wext(int keymgmt)
1994 {
1995         switch (keymgmt) {
1996         case KEY_MGMT_802_1X:
1997         case KEY_MGMT_802_1X_NO_WPA:
1998                 return IW_AUTH_KEY_MGMT_802_1X;
1999         case KEY_MGMT_PSK:
2000                 return IW_AUTH_KEY_MGMT_PSK;
2001         default:
2002                 return 0;
2003         }
2004 }
2005
2006
2007 static int
2008 wpa_driver_wext_auth_alg_fallback(struct wpa_driver_wext_data *drv,
2009                                   struct wpa_driver_associate_params *params)
2010 {
2011         struct iwreq iwr;
2012         int ret = 0;
2013
2014         wpa_printf(MSG_DEBUG, "WEXT: Driver did not support "
2015                    "SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE");
2016
2017         os_memset(&iwr, 0, sizeof(iwr));
2018         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2019         /* Just changing mode, not actual keys */
2020         iwr.u.encoding.flags = 0;
2021         iwr.u.encoding.pointer = (caddr_t) NULL;
2022         iwr.u.encoding.length = 0;
2023
2024         /*
2025          * Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two
2026          * different things. Here they are used to indicate Open System vs.
2027          * Shared Key authentication algorithm. However, some drivers may use
2028          * them to select between open/restricted WEP encrypted (open = allow
2029          * both unencrypted and encrypted frames; restricted = only allow
2030          * encrypted frames).
2031          */
2032
2033         if (!drv->use_crypt) {
2034                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
2035         } else {
2036                 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2037                         iwr.u.encoding.flags |= IW_ENCODE_OPEN;
2038                 if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2039                         iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED;
2040         }
2041
2042         if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
2043                 perror("ioctl[SIOCSIWENCODE]");
2044                 ret = -1;
2045         }
2046
2047         return ret;
2048 }
2049
2050
2051 int wpa_driver_wext_associate(void *priv,
2052                               struct wpa_driver_associate_params *params)
2053 {
2054         struct wpa_driver_wext_data *drv = priv;
2055         int ret = 0;
2056         int allow_unencrypted_eapol;
2057         int value;
2058
2059         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2060
2061         if (drv->cfg80211) {
2062                 /*
2063                  * Stop cfg80211 from trying to associate before we are done
2064                  * with all parameters.
2065                  */
2066                 wpa_driver_wext_set_ssid(drv, (u8 *) "", 0);
2067         }
2068
2069         if (wpa_driver_wext_set_drop_unencrypted(drv, params->drop_unencrypted)
2070             < 0)
2071                 ret = -1;
2072         if (wpa_driver_wext_set_auth_alg(drv, params->auth_alg) < 0)
2073                 ret = -1;
2074         if (wpa_driver_wext_set_mode(drv, params->mode) < 0)
2075                 ret = -1;
2076
2077         /*
2078          * If the driver did not support SIOCSIWAUTH, fallback to
2079          * SIOCSIWENCODE here.
2080          */
2081         if (drv->auth_alg_fallback &&
2082             wpa_driver_wext_auth_alg_fallback(drv, params) < 0)
2083                 ret = -1;
2084
2085         if (!params->bssid &&
2086             wpa_driver_wext_set_bssid(drv, NULL) < 0)
2087                 ret = -1;
2088
2089         /* TODO: should consider getting wpa version and cipher/key_mgmt suites
2090          * from configuration, not from here, where only the selected suite is
2091          * available */
2092         if (wpa_driver_wext_set_gen_ie(drv, params->wpa_ie, params->wpa_ie_len)
2093             < 0)
2094                 ret = -1;
2095         if (params->wpa_ie == NULL || params->wpa_ie_len == 0)
2096                 value = IW_AUTH_WPA_VERSION_DISABLED;
2097         else if (params->wpa_ie[0] == WLAN_EID_RSN)
2098                 value = IW_AUTH_WPA_VERSION_WPA2;
2099         else
2100                 value = IW_AUTH_WPA_VERSION_WPA;
2101         if (wpa_driver_wext_set_auth_param(drv,
2102                                            IW_AUTH_WPA_VERSION, value) < 0)
2103                 ret = -1;
2104         value = wpa_driver_wext_cipher2wext(params->pairwise_suite);
2105         if (wpa_driver_wext_set_auth_param(drv,
2106                                            IW_AUTH_CIPHER_PAIRWISE, value) < 0)
2107                 ret = -1;
2108         value = wpa_driver_wext_cipher2wext(params->group_suite);
2109         if (wpa_driver_wext_set_auth_param(drv,
2110                                            IW_AUTH_CIPHER_GROUP, value) < 0)
2111                 ret = -1;
2112         value = wpa_driver_wext_keymgmt2wext(params->key_mgmt_suite);
2113         if (wpa_driver_wext_set_auth_param(drv,
2114                                            IW_AUTH_KEY_MGMT, value) < 0)
2115                 ret = -1;
2116         value = params->key_mgmt_suite != KEY_MGMT_NONE ||
2117                 params->pairwise_suite != CIPHER_NONE ||
2118                 params->group_suite != CIPHER_NONE ||
2119                 params->wpa_ie_len;
2120         if (wpa_driver_wext_set_auth_param(drv,
2121                                            IW_AUTH_PRIVACY_INVOKED, value) < 0)
2122                 ret = -1;
2123
2124         /* Allow unencrypted EAPOL messages even if pairwise keys are set when
2125          * not using WPA. IEEE 802.1X specifies that these frames are not
2126          * encrypted, but WPA encrypts them when pairwise keys are in use. */
2127         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
2128             params->key_mgmt_suite == KEY_MGMT_PSK)
2129                 allow_unencrypted_eapol = 0;
2130         else
2131                 allow_unencrypted_eapol = 1;
2132
2133         if (wpa_driver_wext_set_psk(drv, params->psk) < 0)
2134                 ret = -1;
2135         if (wpa_driver_wext_set_auth_param(drv,
2136                                            IW_AUTH_RX_UNENCRYPTED_EAPOL,
2137                                            allow_unencrypted_eapol) < 0)
2138                 ret = -1;
2139 #ifdef CONFIG_IEEE80211W
2140         switch (params->mgmt_frame_protection) {
2141         case NO_MGMT_FRAME_PROTECTION:
2142                 value = IW_AUTH_MFP_DISABLED;
2143                 break;
2144         case MGMT_FRAME_PROTECTION_OPTIONAL:
2145                 value = IW_AUTH_MFP_OPTIONAL;
2146                 break;
2147         case MGMT_FRAME_PROTECTION_REQUIRED:
2148                 value = IW_AUTH_MFP_REQUIRED;
2149                 break;
2150         };
2151         if (wpa_driver_wext_set_auth_param(drv, IW_AUTH_MFP, value) < 0)
2152                 ret = -1;
2153 #endif /* CONFIG_IEEE80211W */
2154         if (params->freq && wpa_driver_wext_set_freq(drv, params->freq) < 0)
2155                 ret = -1;
2156         if (!drv->cfg80211 &&
2157             wpa_driver_wext_set_ssid(drv, params->ssid, params->ssid_len) < 0)
2158                 ret = -1;
2159         if (params->bssid &&
2160             wpa_driver_wext_set_bssid(drv, params->bssid) < 0)
2161                 ret = -1;
2162         if (drv->cfg80211 &&
2163             wpa_driver_wext_set_ssid(drv, params->ssid, params->ssid_len) < 0)
2164                 ret = -1;
2165
2166         return ret;
2167 }
2168
2169
2170 static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg)
2171 {
2172         struct wpa_driver_wext_data *drv = priv;
2173         int algs = 0, res;
2174
2175         if (auth_alg & WPA_AUTH_ALG_OPEN)
2176                 algs |= IW_AUTH_ALG_OPEN_SYSTEM;
2177         if (auth_alg & WPA_AUTH_ALG_SHARED)
2178                 algs |= IW_AUTH_ALG_SHARED_KEY;
2179         if (auth_alg & WPA_AUTH_ALG_LEAP)
2180                 algs |= IW_AUTH_ALG_LEAP;
2181         if (algs == 0) {
2182                 /* at least one algorithm should be set */
2183                 algs = IW_AUTH_ALG_OPEN_SYSTEM;
2184         }
2185
2186         res = wpa_driver_wext_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG,
2187                                              algs);
2188         drv->auth_alg_fallback = res == -2;
2189         return res;
2190 }
2191
2192
2193 /**
2194  * wpa_driver_wext_set_mode - Set wireless mode (infra/adhoc), SIOCSIWMODE
2195  * @priv: Pointer to private wext data from wpa_driver_wext_init()
2196  * @mode: 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS
2197  * Returns: 0 on success, -1 on failure
2198  */
2199 int wpa_driver_wext_set_mode(void *priv, int mode)
2200 {
2201         struct wpa_driver_wext_data *drv = priv;
2202         struct iwreq iwr;
2203         int ret = -1;
2204         unsigned int new_mode = mode ? IW_MODE_ADHOC : IW_MODE_INFRA;
2205
2206         os_memset(&iwr, 0, sizeof(iwr));
2207         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2208         iwr.u.mode = new_mode;
2209         if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) == 0) {
2210                 ret = 0;
2211                 goto done;
2212         }
2213
2214         if (errno != EBUSY) {
2215                 perror("ioctl[SIOCSIWMODE]");
2216                 goto done;
2217         }
2218
2219         /* mac80211 doesn't allow mode changes while the device is up, so if
2220          * the device isn't in the mode we're about to change to, take device
2221          * down, try to set the mode again, and bring it back up.
2222          */
2223         if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
2224                 perror("ioctl[SIOCGIWMODE]");
2225                 goto done;
2226         }
2227
2228         if (iwr.u.mode == new_mode) {
2229                 ret = 0;
2230                 goto done;
2231         }
2232
2233         if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 0) == 0) {
2234                 /* Try to set the mode again while the interface is down */
2235                 iwr.u.mode = new_mode;
2236                 if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0)
2237                         perror("ioctl[SIOCSIWMODE]");
2238                 else
2239                         ret = 0;
2240
2241                 (void) linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1);
2242         }
2243
2244 done:
2245         return ret;
2246 }
2247
2248
2249 static int wpa_driver_wext_pmksa(struct wpa_driver_wext_data *drv,
2250                                  u32 cmd, const u8 *bssid, const u8 *pmkid)
2251 {
2252         struct iwreq iwr;
2253         struct iw_pmksa pmksa;
2254         int ret = 0;
2255
2256         os_memset(&iwr, 0, sizeof(iwr));
2257         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2258         os_memset(&pmksa, 0, sizeof(pmksa));
2259         pmksa.cmd = cmd;
2260         pmksa.bssid.sa_family = ARPHRD_ETHER;
2261         if (bssid)
2262                 os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN);
2263         if (pmkid)
2264                 os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN);
2265         iwr.u.data.pointer = (caddr_t) &pmksa;
2266         iwr.u.data.length = sizeof(pmksa);
2267
2268         if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) {
2269                 if (errno != EOPNOTSUPP)
2270                         perror("ioctl[SIOCSIWPMKSA]");
2271                 ret = -1;
2272         }
2273
2274         return ret;
2275 }
2276
2277
2278 static int wpa_driver_wext_add_pmkid(void *priv, const u8 *bssid,
2279                                      const u8 *pmkid)
2280 {
2281         struct wpa_driver_wext_data *drv = priv;
2282         return wpa_driver_wext_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid);
2283 }
2284
2285
2286 static int wpa_driver_wext_remove_pmkid(void *priv, const u8 *bssid,
2287                                         const u8 *pmkid)
2288 {
2289         struct wpa_driver_wext_data *drv = priv;
2290         return wpa_driver_wext_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid);
2291 }
2292
2293
2294 static int wpa_driver_wext_flush_pmkid(void *priv)
2295 {
2296         struct wpa_driver_wext_data *drv = priv;
2297         return wpa_driver_wext_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL);
2298 }
2299
2300
2301 int wpa_driver_wext_get_capa(void *priv, struct wpa_driver_capa *capa)
2302 {
2303         struct wpa_driver_wext_data *drv = priv;
2304         if (!drv->has_capability)
2305                 return -1;
2306         os_memcpy(capa, &drv->capa, sizeof(*capa));
2307         return 0;
2308 }
2309
2310
2311 int wpa_driver_wext_alternative_ifindex(struct wpa_driver_wext_data *drv,
2312                                         const char *ifname)
2313 {
2314         if (ifname == NULL) {
2315                 drv->ifindex2 = -1;
2316                 return 0;
2317         }
2318
2319         drv->ifindex2 = if_nametoindex(ifname);
2320         if (drv->ifindex2 <= 0)
2321                 return -1;
2322
2323         wpa_printf(MSG_DEBUG, "Added alternative ifindex %d (%s) for "
2324                    "wireless events", drv->ifindex2, ifname);
2325
2326         return 0;
2327 }
2328
2329
2330 int wpa_driver_wext_set_operstate(void *priv, int state)
2331 {
2332         struct wpa_driver_wext_data *drv = priv;
2333
2334         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
2335                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
2336         drv->operstate = state;
2337         return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
2338                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
2339 }
2340
2341
2342 int wpa_driver_wext_get_version(struct wpa_driver_wext_data *drv)
2343 {
2344         return drv->we_version_compiled;
2345 }
2346
2347
2348 static const char * wext_get_radio_name(void *priv)
2349 {
2350         struct wpa_driver_wext_data *drv = priv;
2351         return drv->phyname;
2352 }
2353
2354
2355 #ifdef ANDROID
2356
2357 static int android_wext_cmd(struct wpa_driver_wext_data *drv, const char *cmd)
2358 {
2359         struct iwreq iwr;
2360         char buf[MAX_DRV_CMD_SIZE];
2361         int ret;
2362
2363         os_memset(&iwr, 0, sizeof(iwr));
2364         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2365
2366         os_memset(buf, 0, sizeof(buf));
2367         os_strlcpy(buf, cmd, sizeof(buf));
2368
2369         iwr.u.data.pointer = buf;
2370         iwr.u.data.length = sizeof(buf);
2371
2372         ret = ioctl(drv->ioctl_sock, SIOCSIWPRIV, &iwr);
2373
2374         if (ret < 0) {
2375                 wpa_printf(MSG_ERROR, "%s failed (%d): %s", __func__, ret,
2376                            cmd);
2377                 drv->errors++;
2378                 if (drv->errors > DRV_NUMBER_SEQUENTIAL_ERRORS) {
2379                         drv->errors = 0;
2380                         wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE
2381                                 "HANGED");
2382                 }
2383                 return ret;
2384         }
2385
2386         drv->errors = 0;
2387         return 0;
2388 }
2389
2390
2391 static int wext_sched_scan(void *priv, struct wpa_driver_scan_params *params,
2392                            u32 interval)
2393 {
2394         struct wpa_driver_wext_data *drv = priv;
2395         struct iwreq iwr;
2396         int ret = 0, i = 0, bp;
2397         char buf[WEXT_PNO_MAX_COMMAND_SIZE];
2398
2399         bp = WEXT_PNOSETUP_HEADER_SIZE;
2400         os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp);
2401         buf[bp++] = WEXT_PNO_TLV_PREFIX;
2402         buf[bp++] = WEXT_PNO_TLV_VERSION;
2403         buf[bp++] = WEXT_PNO_TLV_SUBVERSION;
2404         buf[bp++] = WEXT_PNO_TLV_RESERVED;
2405
2406         while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) {
2407                 /*
2408                  * Check that there is enough space needed for 1 more SSID, the
2409                  * other sections and null termination.
2410                  */
2411                 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + IW_ESSID_MAX_SIZE +
2412                      WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf))
2413                         break;
2414
2415                 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan",
2416                                   params->ssids[i].ssid,
2417                                   params->ssids[i].ssid_len);
2418                 buf[bp++] = WEXT_PNO_SSID_SECTION;
2419                 buf[bp++] = params->ssids[i].ssid_len;
2420                 os_memcpy(&buf[bp], params->ssids[i].ssid,
2421                           params->ssids[i].ssid_len);
2422                 bp += params->ssids[i].ssid_len;
2423                 i++;
2424         }
2425
2426         buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION;
2427         /* TODO: consider using interval parameter (interval in msec) instead
2428          * of hardcoded value here */
2429         os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x",
2430                     WEXT_PNO_SCAN_INTERVAL);
2431         bp += WEXT_PNO_SCAN_INTERVAL_LENGTH;
2432
2433         buf[bp++] = WEXT_PNO_REPEAT_SECTION;
2434         os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x",
2435                     WEXT_PNO_REPEAT);
2436         bp += WEXT_PNO_REPEAT_LENGTH;
2437
2438         buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION;
2439         os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x",
2440                     WEXT_PNO_MAX_REPEAT);
2441         bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1;
2442
2443         os_memset(&iwr, 0, sizeof(iwr));
2444         os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2445         iwr.u.data.pointer = buf;
2446         iwr.u.data.length = bp;
2447
2448         ret = ioctl(drv->ioctl_sock, SIOCSIWPRIV, &iwr);
2449         if (ret < 0) {
2450                 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d",
2451                            ret);
2452                 drv->errors++;
2453                 if (drv->errors > DRV_NUMBER_SEQUENTIAL_ERRORS) {
2454                         drv->errors = 0;
2455                         wpa_msg(drv->ctx, MSG_INFO,
2456                                 WPA_EVENT_DRIVER_STATE "HANGED");
2457                 }
2458                 return ret;
2459         }
2460
2461         drv->errors = 0;
2462         drv->bgscan_enabled = 1;
2463
2464         return android_wext_cmd(drv, "PNOFORCE 1");
2465 }
2466
2467
2468 static int wext_stop_sched_scan(void *priv)
2469 {
2470         struct wpa_driver_wext_data *drv = priv;
2471         drv->bgscan_enabled = 0;
2472         return android_wext_cmd(drv, "PNOFORCE 0");
2473 }
2474
2475 #endif /* ANDROID */
2476
2477
2478 const struct wpa_driver_ops wpa_driver_wext_ops = {
2479         .name = "wext",
2480         .desc = "Linux wireless extensions (generic)",
2481         .get_bssid = wpa_driver_wext_get_bssid,
2482         .get_ssid = wpa_driver_wext_get_ssid,
2483         .set_key = wpa_driver_wext_set_key,
2484         .set_countermeasures = wpa_driver_wext_set_countermeasures,
2485         .scan2 = wpa_driver_wext_scan,
2486         .get_scan_results2 = wpa_driver_wext_get_scan_results,
2487         .deauthenticate = wpa_driver_wext_deauthenticate,
2488         .disassociate = wpa_driver_wext_disassociate,
2489         .associate = wpa_driver_wext_associate,
2490         .init = wpa_driver_wext_init,
2491         .deinit = wpa_driver_wext_deinit,
2492         .add_pmkid = wpa_driver_wext_add_pmkid,
2493         .remove_pmkid = wpa_driver_wext_remove_pmkid,
2494         .flush_pmkid = wpa_driver_wext_flush_pmkid,
2495         .get_capa = wpa_driver_wext_get_capa,
2496         .set_operstate = wpa_driver_wext_set_operstate,
2497         .get_radio_name = wext_get_radio_name,
2498 #ifdef ANDROID
2499         .sched_scan = wext_sched_scan,
2500         .stop_sched_scan = wext_stop_sched_scan,
2501 #endif /* ANDROID */
2502 };