iwinfo_nl80211.c

   1 /*
   2  * iwinfo - Wireless Information Library - NL80211 Backend
   3  *
   4  *   Copyright (C) 2010-2013 Jo-Philipp Wich <xm@subsignal.org>
   5  *
   6  * The iwinfo library is free software: you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License version 2
   8  * as published by the Free Software Foundation.
   9  *
  10  * The iwinfo library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13  * See the GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with the iwinfo library. If not, see http://www.gnu.org/licenses/.
  17  *
  18  * The signal handling code is derived from the official madwifi tools,
  19  * wlanconfig.c in particular. The encryption property handling was
  20  * inspired by the hostapd madwifi driver.
  21  *
  22  * Parts of this code are derived from the Linux iw utility.
  23  */
  24
  25 #include <limits.h>
  26 #include <glob.h>
  27 #include <fnmatch.h>
  28 #include <stdarg.h>
  29 #include <stdlib.h>
  30
  31 #include "iwinfo_nl80211.h"
  32
  33 #define min(x, y) ((x) < (y)) ? (x) : (y)
  34
  35 #define BIT(x) (1ULL<<(x))
  36
  37 static struct nl80211_state *nls = NULL;
  38
  39 static void nl80211_close(void)
  40 {
  41         if (nls)
  42         {
  43                 if (nls->nlctrl)
  44                         genl_family_put(nls->nlctrl);
  45
  46                 if (nls->nl80211)
  47                         genl_family_put(nls->nl80211);
  48
  49                 if (nls->nl_sock)
  50                         nl_socket_free(nls->nl_sock);
  51
  52                 if (nls->nl_cache)
  53                         nl_cache_free(nls->nl_cache);
  54
  55                 free(nls);
  56                 nls = NULL;
  57         }
  58 }
  59
  60 static int nl80211_init(void)
  61 {
  62         int err, fd;
  63
  64         if (!nls)
  65         {
  66                 nls = malloc(sizeof(struct nl80211_state));
  67                 if (!nls) {
  68                         err = -ENOMEM;
  69                         goto err;
  70                 }
  71
  72                 memset(nls, 0, sizeof(*nls));
  73
  74                 nls->nl_sock = nl_socket_alloc();
  75                 if (!nls->nl_sock) {
  76                         err = -ENOMEM;
  77                         goto err;
  78                 }
  79
  80                 if (genl_connect(nls->nl_sock)) {
  81                         err = -ENOLINK;
  82                         goto err;
  83                 }
  84
  85                 fd = nl_socket_get_fd(nls->nl_sock);
  86                 if (fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC) < 0) {
  87                         err = -EINVAL;
  88                         goto err;
  89                 }
  90
  91                 if (genl_ctrl_alloc_cache(nls->nl_sock, &nls->nl_cache)) {
  92                         err = -ENOMEM;
  93                         goto err;
  94                 }
  95
  96                 nls->nl80211 = genl_ctrl_search_by_name(nls->nl_cache, "nl80211");
  97                 if (!nls->nl80211) {
  98                         err = -ENOENT;
  99                         goto err;
 100                 }
 101
 102                 nls->nlctrl = genl_ctrl_search_by_name(nls->nl_cache, "nlctrl");
 103                 if (!nls->nlctrl) {
 104                         err = -ENOENT;
 105                         goto err;
 106                 }
 107         }
 108
 109         return 0;
 110
 111
 112 err:
 113         nl80211_close();
 114         return err;
 115 }
 116
 117 static int nl80211_readint(const char *path)
 118 {
 119         int fd;
 120         int rv = -1;
 121         char buffer[16];
 122
 123         if ((fd = open(path, O_RDONLY)) > -1)
 124         {
 125                 if (read(fd, buffer, sizeof(buffer)) > 0)
 126                         rv = atoi(buffer);
 127
 128                 close(fd);
 129         }
 130
 131         return rv;
 132 }
 133
 134 static int nl80211_readstr(const char *path, char *buffer, int length)
 135 {
 136         int fd;
 137         int rv = -1;
 138
 139         if ((fd = open(path, O_RDONLY)) > -1)
 140         {
 141                 if ((rv = read(fd, buffer, length - 1)) > 0)
 142                 {
 143                         if (buffer[rv - 1] == '\n')
 144                                 rv--;
 145
 146                         buffer[rv] = 0;
 147                 }
 148
 149                 close(fd);
 150         }
 151
 152         return rv;
 153 }
 154
 155
 156 static int nl80211_msg_error(struct sockaddr_nl *nla,
 157         struct nlmsgerr *err, void *arg)
 158 {
 159         int *ret = arg;
 160         *ret = err->error;
 161         return NL_STOP;
 162 }
 163
 164 static int nl80211_msg_finish(struct nl_msg *msg, void *arg)
 165 {
 166         int *ret = arg;
 167         *ret = 0;
 168         return NL_SKIP;
 169 }
 170
 171 static int nl80211_msg_ack(struct nl_msg *msg, void *arg)
 172 {
 173         int *ret = arg;
 174         *ret = 0;
 175         return NL_STOP;
 176 }
 177
 178 static int nl80211_msg_response(struct nl_msg *msg, void *arg)
 179 {
 180         return NL_SKIP;
 181 }
 182
 183 static void nl80211_free(struct nl80211_msg_conveyor *cv)
 184 {
 185         if (cv)
 186         {
 187                 if (cv->cb)
 188                         nl_cb_put(cv->cb);
 189
 190                 if (cv->msg)
 191                         nlmsg_free(cv->msg);
 192
 193                 cv->cb  = NULL;
 194                 cv->msg = NULL;
 195         }
 196 }
 197
 198 static struct nl80211_msg_conveyor * nl80211_new(struct genl_family *family,
 199                                                  int cmd, int flags)
 200 {
 201         static struct nl80211_msg_conveyor cv;
 202
 203         struct nl_msg *req = NULL;
 204         struct nl_cb *cb = NULL;
 205
 206         req = nlmsg_alloc();
 207         if (!req)
 208                 goto err;
 209
 210         cb = nl_cb_alloc(NL_CB_DEFAULT);
 211         if (!cb)
 212                 goto err;
 213
 214         genlmsg_put(req, 0, 0, genl_family_get_id(family), 0, flags, cmd, 0);
 215
 216         cv.msg = req;
 217         cv.cb  = cb;
 218
 219         return &cv;
 220
 221 err:
 222         if (req)
 223                 nlmsg_free(req);
 224
 225         return NULL;
 226 }
 227
 228 static struct nl80211_msg_conveyor * nl80211_ctl(int cmd, int flags)
 229 {
 230         if (nl80211_init() < 0)
 231                 return NULL;
 232
 233         return nl80211_new(nls->nlctrl, cmd, flags);
 234 }
 235
 236 static int nl80211_phy_idx_from_uci_path(struct uci_section *s)
 237 {
 238         size_t linklen, pathlen;
 239         char buf[128], *link;
 240         struct dirent *e;
 241         const char *path;
 242         int idx = -1;
 243         DIR *d;
 244
 245         path = uci_lookup_option_string(uci_ctx, s, "path");
 246         if (!path)
 247                 return -1;
 248
 249         if ((d = opendir("/sys/class/ieee80211")) != NULL)
 250         {
 251                 while ((e = readdir(d)) != NULL)
 252                 {
 253                         snprintf(buf, sizeof(buf), "/sys/class/ieee80211/%s/device", e->d_name);
 254
 255                         link = realpath(buf, NULL);
 256
 257                         if (link == NULL)
 258                                 continue;
 259
 260                         linklen = strlen(link);
 261                         pathlen = strlen(path);
 262
 263                         if (pathlen >= linklen || strcmp(link + (linklen - pathlen), path))
 264                                 linklen = 0;
 265
 266                         free(link);
 267
 268                         if (linklen == 0)
 269                                 continue;
 270
 271                         snprintf(buf, sizeof(buf), "/sys/class/ieee80211/%s/index", e->d_name);
 272
 273                         idx = nl80211_readint(buf);
 274
 275                         if (idx >= 0)
 276                                 break;
 277                 }
 278
 279                 closedir(d);
 280         }
 281
 282         return idx;
 283 }
 284
 285 static int nl80211_phy_idx_from_uci_macaddr(struct uci_section *s)
 286 {
 287         const char *opt;
 288         char buf[128];
 289         int i, idx = -1;
 290         glob_t gl;
 291
 292         opt = uci_lookup_option_string(uci_ctx, s, "macaddr");
 293         if (!opt)
 294                 return -1;
 295
 296         snprintf(buf, sizeof(buf), "/sys/class/ieee80211/*");   /**/
 297         if (glob(buf, 0, NULL, &gl))
 298                 return -1;
 299
 300         for (i = 0; i < gl.gl_pathc; i++)
 301         {
 302                 snprintf(buf, sizeof(buf), "%s/macaddress", gl.gl_pathv[i]);
 303                 if (nl80211_readstr(buf, buf, sizeof(buf)) <= 0)
 304                         continue;
 305
 306                 if (fnmatch(opt, buf, FNM_CASEFOLD))
 307                         continue;
 308
 309                 snprintf(buf, sizeof(buf), "%s/index", gl.gl_pathv[i]);
 310                 if ((idx = nl80211_readint(buf)) > -1)
 311                         break;
 312         }
 313
 314         globfree(&gl);
 315
 316         return idx;
 317 }
 318
 319 static int nl80211_phy_idx_from_uci_phy(struct uci_section *s)
 320 {
 321         const char *opt;
 322         char buf[128];
 323
 324         opt = uci_lookup_option_string(uci_ctx, s, "phy");
 325         if (!opt)
 326                 return -1;
 327
 328         snprintf(buf, sizeof(buf), "/sys/class/ieee80211/%s/index", opt);
 329         return nl80211_readint(buf);
 330 }
 331
 332 static int nl80211_phy_idx_from_uci(const char *name)
 333 {
 334         struct uci_section *s;
 335         int idx = -1;
 336
 337         s = iwinfo_uci_get_radio(name, "mac80211");
 338         if (!s)
 339                 goto free;
 340
 341         idx = nl80211_phy_idx_from_uci_path(s);
 342
 343         if (idx < 0)
 344                 idx = nl80211_phy_idx_from_uci_macaddr(s);
 345
 346         if (idx < 0)
 347                 idx = nl80211_phy_idx_from_uci_phy(s);
 348
 349 free:
 350         iwinfo_uci_free();
 351         return idx;
 352 }
 353
 354 static struct nl80211_msg_conveyor * nl80211_msg(const char *ifname,
 355                                                  int cmd, int flags)
 356 {
 357         int ifidx = -1, phyidx = -1;
 358         struct nl80211_msg_conveyor *cv;
 359
 360         if (ifname == NULL)
 361                 return NULL;
 362
 363         if (nl80211_init() < 0)
 364                 return NULL;
 365
 366         if (!strncmp(ifname, "phy", 3))
 367                 phyidx = atoi(&ifname[3]);
 368         else if (!strncmp(ifname, "radio", 5))
 369                 phyidx = nl80211_phy_idx_from_uci(ifname);
 370
 371         if (!strncmp(ifname, "mon.", 4))
 372                 ifidx = if_nametoindex(&ifname[4]);
 373         else
 374                 ifidx = if_nametoindex(ifname);
 375
 376         /* Valid ifidx must be greater than 0 */
 377         if ((ifidx <= 0) && (phyidx < 0))
 378                 return NULL;
 379
 380         cv = nl80211_new(nls->nl80211, cmd, flags);
 381         if (!cv)
 382                 return NULL;
 383
 384         if (ifidx > 0)
 385                 NLA_PUT_U32(cv->msg, NL80211_ATTR_IFINDEX, ifidx);
 386         else if (phyidx > -1)
 387                 NLA_PUT_U32(cv->msg, NL80211_ATTR_WIPHY, phyidx);
 388
 389         return cv;
 390
 391 nla_put_failure:
 392         nl80211_free(cv);
 393         return NULL;
 394 }
 395
 396 static int nl80211_send(struct nl80211_msg_conveyor *cv,
 397                         int (*cb_func)(struct nl_msg *, void *),
 398                         void *cb_arg)
 399 {
 400         static struct nl80211_msg_conveyor rcv;
 401         int err;
 402
 403         if (cb_func)
 404                 nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, cb_func, cb_arg);
 405         else
 406                 nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, nl80211_msg_response, &rcv);
 407
 408         err = nl_send_auto_complete(nls->nl_sock, cv->msg);
 409
 410         if (err < 0)
 411                 goto out;
 412
 413         err = 1;
 414
 415         nl_cb_err(cv->cb,               NL_CB_CUSTOM, nl80211_msg_error,  &err);
 416         nl_cb_set(cv->cb, NL_CB_FINISH, NL_CB_CUSTOM, nl80211_msg_finish, &err);
 417         nl_cb_set(cv->cb, NL_CB_ACK,    NL_CB_CUSTOM, nl80211_msg_ack,    &err);
 418
 419         while (err > 0)
 420                 nl_recvmsgs(nls->nl_sock, cv->cb);
 421
 422 out:
 423         nl80211_free(cv);
 424         return err;
 425 }
 426
 427 static int nl80211_request(const char *ifname, int cmd, int flags,
 428                            int (*cb_func)(struct nl_msg *, void *),
 429                            void *cb_arg)
 430 {
 431         struct nl80211_msg_conveyor *cv;
 432
 433         cv = nl80211_msg(ifname, cmd, flags);
 434
 435         if (!cv)
 436                 return -ENOMEM;
 437
 438         return nl80211_send(cv, cb_func, cb_arg);
 439 }
 440
 441 static struct nlattr ** nl80211_parse(struct nl_msg *msg)
 442 {
 443         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 444         static struct nlattr *attr[NL80211_ATTR_MAX + 1];
 445
 446         nla_parse(attr, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 447                   genlmsg_attrlen(gnlh, 0), NULL);
 448
 449         return attr;
 450 }
 451
 452 static int nl80211_get_protocol_features_cb(struct nl_msg *msg, void *arg)
 453 {
 454         uint32_t *features = arg;
 455         struct nlattr **attr = nl80211_parse(msg);
 456
 457         if (attr[NL80211_ATTR_PROTOCOL_FEATURES])
 458                 *features = nla_get_u32(attr[NL80211_ATTR_PROTOCOL_FEATURES]);
 459
 460         return NL_SKIP;
 461 }
 462
 463 static int nl80211_get_protocol_features(const char *ifname)
 464 {
 465         struct nl80211_msg_conveyor *req;
 466         uint32_t features = 0;
 467
 468         req = nl80211_msg(ifname, NL80211_CMD_GET_PROTOCOL_FEATURES, 0);
 469         if (req) {
 470                 nl80211_send(req, nl80211_get_protocol_features_cb, &features);
 471                 nl80211_free(req);
 472         }
 473
 474         return features;
 475 }
 476
 477 static int nl80211_subscribe_cb(struct nl_msg *msg, void *arg)
 478 {
 479         struct nl80211_group_conveyor *cv = arg;
 480
 481         struct nlattr **attr = nl80211_parse(msg);
 482         struct nlattr *mgrpinfo[CTRL_ATTR_MCAST_GRP_MAX + 1];
 483         struct nlattr *mgrp;
 484         int mgrpidx;
 485
 486         if (!attr[CTRL_ATTR_MCAST_GROUPS])
 487                 return NL_SKIP;
 488
 489         nla_for_each_nested(mgrp, attr[CTRL_ATTR_MCAST_GROUPS], mgrpidx)
 490         {
 491                 nla_parse(mgrpinfo, CTRL_ATTR_MCAST_GRP_MAX,
 492                           nla_data(mgrp), nla_len(mgrp), NULL);
 493
 494                 if (mgrpinfo[CTRL_ATTR_MCAST_GRP_ID] &&
 495                     mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME] &&
 496                     !strncmp(nla_data(mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME]),
 497                              cv->name, nla_len(mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME])))
 498                 {
 499                         cv->id = nla_get_u32(mgrpinfo[CTRL_ATTR_MCAST_GRP_ID]);
 500                         break;
 501                 }
 502         }
 503
 504         return NL_SKIP;
 505 }
 506
 507 static int nl80211_subscribe(const char *family, const char *group)
 508 {
 509         struct nl80211_group_conveyor cv = { .name = group, .id = -ENOENT };
 510         struct nl80211_msg_conveyor *req;
 511         int err;
 512
 513         req = nl80211_ctl(CTRL_CMD_GETFAMILY, 0);
 514         if (req)
 515         {
 516                 NLA_PUT_STRING(req->msg, CTRL_ATTR_FAMILY_NAME, family);
 517                 err = nl80211_send(req, nl80211_subscribe_cb, &cv);
 518
 519                 if (err)
 520                         return err;
 521
 522                 return nl_socket_add_membership(nls->nl_sock, cv.id);
 523
 524 nla_put_failure:
 525                 nl80211_free(req);
 526         }
 527
 528         return -ENOMEM;
 529 }
 530
 531
 532 static int nl80211_wait_cb(struct nl_msg *msg, void *arg)
 533 {
 534         struct nl80211_event_conveyor *cv = arg;
 535         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 536
 537         if (cv->wait[gnlh->cmd / 32] & (1 << (gnlh->cmd % 32)))
 538                 cv->recv = gnlh->cmd;
 539
 540         return NL_SKIP;
 541 }
 542
 543 static int nl80211_wait_seq_check(struct nl_msg *msg, void *arg)
 544 {
 545         return NL_OK;
 546 }
 547
 548 static int __nl80211_wait(const char *family, const char *group, ...)
 549 {
 550         struct nl80211_event_conveyor cv = { };
 551         struct nl_cb *cb;
 552         int err = 0;
 553         int cmd;
 554         va_list ap;
 555
 556         if (nl80211_subscribe(family, group))
 557                 return -ENOENT;
 558
 559         cb = nl_cb_alloc(NL_CB_DEFAULT);
 560
 561         if (!cb)
 562                 return -ENOMEM;
 563
 564         nl_cb_err(cb,                  NL_CB_CUSTOM, nl80211_msg_error,      &err);
 565         nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, nl80211_wait_seq_check, NULL);
 566         nl_cb_set(cb, NL_CB_VALID,     NL_CB_CUSTOM, nl80211_wait_cb,        &cv );
 567
 568         va_start(ap, group);
 569
 570         for (cmd = va_arg(ap, int); cmd != 0; cmd = va_arg(ap, int))
 571                 cv.wait[cmd / 32] |= (1 << (cmd % 32));
 572
 573         va_end(ap);
 574
 575         while (!cv.recv && !err)
 576                 nl_recvmsgs(nls->nl_sock, cb);
 577
 578         nl_cb_put(cb);
 579
 580         return err;
 581 }
 582
 583 #define nl80211_wait(family, group, ...) \
 584         __nl80211_wait(family, group, __VA_ARGS__, 0)
 585
 586
 587 static int nl80211_freq2channel(int freq)
 588 {
 589         if (freq == 2484)
 590                 return 14;
 591         else if (freq < 2484)
 592                 return (freq - 2407) / 5;
 593         else if (freq >= 4910 && freq <= 4980)
 594                 return (freq - 4000) / 5;
 595         else if(freq >= 56160 + 2160 * 1 && freq <= 56160 + 2160 * 6)
 596                 return (freq - 56160) / 2160;
 597         else
 598                 return (freq - 5000) / 5;
 599 }
 600
 601 static int nl80211_channel2freq(int channel, const char *band)
 602 {
 603         if (!band || band[0] != 'a')
 604         {
 605                 if (channel == 14)
 606                         return 2484;
 607                 else if (channel < 14)
 608                         return (channel * 5) + 2407;
 609         }
 610         else if ( strcmp(band, "ad") == 0)
 611         {
 612                 return 56160 + 2160 * channel;
 613         }
 614         else
 615         {
 616                 if (channel >= 182 && channel <= 196)
 617                         return (channel * 5) + 4000;
 618                 else
 619                         return (channel * 5) + 5000;
 620         }
 621
 622         return 0;
 623 }
 624
 625 static int nl80211_ifname2phy_cb(struct nl_msg *msg, void *arg)
 626 {
 627         char *buf = arg;
 628         struct nlattr **attr = nl80211_parse(msg);
 629
 630         if (attr[NL80211_ATTR_WIPHY_NAME])
 631                 memcpy(buf, nla_data(attr[NL80211_ATTR_WIPHY_NAME]),
 632                        nla_len(attr[NL80211_ATTR_WIPHY_NAME]));
 633         else
 634                 buf[0] = 0;
 635
 636         return NL_SKIP;
 637 }
 638
 639 static char * nl80211_ifname2phy(const char *ifname)
 640 {
 641         static char phy[32] = { 0 };
 642
 643         memset(phy, 0, sizeof(phy));
 644
 645         nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0,
 646                         nl80211_ifname2phy_cb, phy);
 647
 648         return phy[0] ? phy : NULL;
 649 }
 650
 651 static char * nl80211_phy2ifname(const char *ifname)
 652 {
 653         int ifidx = -1, cifidx = -1, phyidx = -1;
 654         char buffer[64];
 655         static char nif[IFNAMSIZ] = { 0 };
 656
 657         DIR *d;
 658         struct dirent *e;
 659
 660         /* Only accept phy name of the form phy%d or radio%d */
 661         if (!ifname)
 662                 return NULL;
 663         else if (!strncmp(ifname, "phy", 3))
 664                 phyidx = atoi(&ifname[3]);
 665         else if (!strncmp(ifname, "radio", 5))
 666                 phyidx = nl80211_phy_idx_from_uci(ifname);
 667         else
 668                 return NULL;
 669
 670         memset(nif, 0, sizeof(nif));
 671
 672         if (phyidx > -1)
 673         {
 674                 if ((d = opendir("/sys/class/net")) != NULL)
 675                 {
 676                         while ((e = readdir(d)) != NULL)
 677                         {
 678                                 snprintf(buffer, sizeof(buffer),
 679                                          "/sys/class/net/%s/phy80211/index", e->d_name);
 680
 681                                 if (nl80211_readint(buffer) == phyidx)
 682                                 {
 683                                         snprintf(buffer, sizeof(buffer),
 684                                                  "/sys/class/net/%s/ifindex", e->d_name);
 685
 686                                         if ((cifidx = nl80211_readint(buffer)) >= 0 &&
 687                                             ((ifidx < 0) || (cifidx < ifidx)))
 688                                         {
 689                                                 ifidx = cifidx;
 690                                                 strncpy(nif, e->d_name, sizeof(nif) - 1);
 691                                         }
 692                                 }
 693                         }
 694
 695                         closedir(d);
 696                 }
 697         }
 698
 699         return nif[0] ? nif : NULL;
 700 }
 701
 702 static int nl80211_get_mode_cb(struct nl_msg *msg, void *arg)
 703 {
 704         int *mode = arg;
 705         struct nlattr **tb = nl80211_parse(msg);
 706         const int ifmodes[NL80211_IFTYPE_MAX + 1] = {
 707                 IWINFO_OPMODE_UNKNOWN,          /* unspecified */
 708                 IWINFO_OPMODE_ADHOC,            /* IBSS */
 709                 IWINFO_OPMODE_CLIENT,           /* managed */
 710                 IWINFO_OPMODE_MASTER,           /* AP */
 711                 IWINFO_OPMODE_AP_VLAN,          /* AP/VLAN */
 712                 IWINFO_OPMODE_WDS,                      /* WDS */
 713                 IWINFO_OPMODE_MONITOR,          /* monitor */
 714                 IWINFO_OPMODE_MESHPOINT,        /* mesh point */
 715                 IWINFO_OPMODE_P2P_CLIENT,       /* P2P-client */
 716                 IWINFO_OPMODE_P2P_GO,           /* P2P-GO */
 717         };
 718
 719         if (tb[NL80211_ATTR_IFTYPE])
 720                 *mode = ifmodes[nla_get_u32(tb[NL80211_ATTR_IFTYPE])];
 721
 722         return NL_SKIP;
 723 }
 724
 725
 726 static int nl80211_get_mode(const char *ifname, int *buf)
 727 {
 728         char *res;
 729
 730         *buf = IWINFO_OPMODE_UNKNOWN;
 731
 732         res = nl80211_phy2ifname(ifname);
 733
 734         nl80211_request(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0,
 735                         nl80211_get_mode_cb, buf);
 736
 737         return (*buf == IWINFO_OPMODE_UNKNOWN) ? -1 : 0;
 738 }
 739
 740 static int __nl80211_hostapd_query(const char *ifname, ...)
 741 {
 742         va_list ap, ap_cur;
 743         char *phy, *search, *dest, *key, *val, buf[128];
 744         int len, mode, found = 0, match = 1;
 745         FILE *fp;
 746
 747         if (nl80211_get_mode(ifname, &mode))
 748                 return 0;
 749
 750         if (mode != IWINFO_OPMODE_MASTER && mode != IWINFO_OPMODE_AP_VLAN)
 751                 return 0;
 752
 753         phy = nl80211_ifname2phy(ifname);
 754
 755         if (!phy)
 756                 return 0;
 757
 758         snprintf(buf, sizeof(buf), "/var/run/hostapd-%s.conf", phy);
 759         fp = fopen(buf, "r");
 760
 761         if (!fp)
 762                 return 0;
 763
 764         va_start(ap, ifname);
 765
 766         /* clear all destination buffers */
 767         va_copy(ap_cur, ap);
 768
 769         while ((search = va_arg(ap_cur, char *)) != NULL)
 770         {
 771                 dest = va_arg(ap_cur, char *);
 772                 len  = va_arg(ap_cur, int);
 773
 774                 memset(dest, 0, len);
 775         }
 776
 777         va_end(ap_cur);
 778
 779         /* iterate applicable lines and copy found values into dest buffers */
 780         while (fgets(buf, sizeof(buf), fp))
 781         {
 782                 key = strtok(buf, " =\t\n");
 783                 val = strtok(NULL, "\n");
 784
 785                 if (!key || !val || !*key || *key == '#')
 786                         continue;
 787
 788                 if (!strcmp(key, "interface") || !strcmp(key, "bss"))
 789                         match = !strcmp(ifname, val);
 790
 791                 if (!match)
 792                         continue;
 793
 794                 va_copy(ap_cur, ap);
 795
 796                 while ((search = va_arg(ap_cur, char *)) != NULL)
 797                 {
 798                         dest = va_arg(ap_cur, char *);
 799                         len  = va_arg(ap_cur, int);
 800
 801                         if (!strcmp(search, key))
 802                         {
 803                                 strncpy(dest, val, len - 1);
 804                                 found++;
 805                                 break;
 806                         }
 807                 }
 808
 809                 va_end(ap_cur);
 810         }
 811
 812         fclose(fp);
 813
 814         va_end(ap);
 815
 816         return found;
 817 }
 818
 819 #define nl80211_hostapd_query(ifname, ...) \
 820         __nl80211_hostapd_query(ifname, ##__VA_ARGS__, NULL)
 821
 822
 823 static inline int nl80211_wpactl_recv(int sock, char *buf, int blen)
 824 {
 825         fd_set rfds;
 826         struct timeval tv = { 0, 256000 };
 827
 828         FD_ZERO(&rfds);
 829         FD_SET(sock, &rfds);
 830
 831         memset(buf, 0, blen);
 832
 833         if (select(sock + 1, &rfds, NULL, NULL, &tv) < 0)
 834                 return -1;
 835
 836         if (!FD_ISSET(sock, &rfds))
 837                 return -1;
 838
 839         return recv(sock, buf, blen - 1, 0);
 840 }
 841
 842 static int nl80211_wpactl_connect(const char *ifname, struct sockaddr_un *local)
 843 {
 844         struct sockaddr_un remote = { 0 };
 845         size_t remote_length, local_length;
 846
 847         int sock = socket(PF_UNIX, SOCK_DGRAM, 0);
 848         if (sock < 0)
 849                 return sock;
 850
 851         remote.sun_family = AF_UNIX;
 852         remote_length = sizeof(remote.sun_family) +
 853                 sprintf(remote.sun_path, "/var/run/wpa_supplicant-%s/%s",
 854                         ifname, ifname);
 855
 856         if (fcntl(sock, F_SETFD, fcntl(sock, F_GETFD) | FD_CLOEXEC) < 0)
 857         {
 858                 close(sock);
 859                 return -1;
 860         }
 861
 862         if (connect(sock, (struct sockaddr *)&remote, remote_length))
 863         {
 864                 remote_length = sizeof(remote.sun_family) +
 865                         sprintf(remote.sun_path, "/var/run/wpa_supplicant/%s", ifname);
 866
 867                 if (connect(sock, (struct sockaddr *)&remote, remote_length))
 868                 {
 869                         close(sock);
 870                         return -1;
 871                 }
 872         }
 873
 874         local->sun_family = AF_UNIX;
 875         local_length = sizeof(local->sun_family) +
 876                 sprintf(local->sun_path, "/var/run/iwinfo-%s-%d", ifname, getpid());
 877
 878         if (bind(sock, (struct sockaddr *)local, local_length) < 0)
 879         {
 880                 close(sock);
 881                 return -1;
 882         }
 883
 884         return sock;
 885 }
 886
 887 static int __nl80211_wpactl_query(const char *ifname, ...)
 888 {
 889         va_list ap, ap_cur;
 890         struct sockaddr_un local = { 0 };
 891         int len, mode, found = 0, sock = -1;
 892         char *search, *dest, *key, *val, *line, *pos, buf[512];
 893
 894         if (nl80211_get_mode(ifname, &mode))
 895                 return 0;
 896
 897         if (mode != IWINFO_OPMODE_CLIENT &&
 898             mode != IWINFO_OPMODE_ADHOC &&
 899             mode != IWINFO_OPMODE_MESHPOINT)
 900                 return 0;
 901
 902         sock = nl80211_wpactl_connect(ifname, &local);
 903
 904         if (sock < 0)
 905                 return 0;
 906
 907         va_start(ap, ifname);
 908
 909         /* clear all destination buffers */
 910         va_copy(ap_cur, ap);
 911
 912         while ((search = va_arg(ap_cur, char *)) != NULL)
 913         {
 914                 dest = va_arg(ap_cur, char *);
 915                 len  = va_arg(ap_cur, int);
 916
 917                 memset(dest, 0, len);
 918         }
 919
 920         va_end(ap_cur);
 921
 922         send(sock, "STATUS", 6, 0);
 923
 924         while (true)
 925         {
 926                 if (nl80211_wpactl_recv(sock, buf, sizeof(buf)) <= 0)
 927                         break;
 928
 929                 if (buf[0] == '<')
 930                         continue;
 931
 932                 for (line = strtok_r(buf, "\n", &pos);
 933                          line != NULL;
 934                          line = strtok_r(NULL, "\n", &pos))
 935                 {
 936                         key = strtok(line, "=");
 937                         val = strtok(NULL, "\n");
 938
 939                         if (!key || !val)
 940                                 continue;
 941
 942                         va_copy(ap_cur, ap);
 943
 944                         while ((search = va_arg(ap_cur, char *)) != NULL)
 945                         {
 946                                 dest = va_arg(ap_cur, char *);
 947                                 len  = va_arg(ap_cur, int);
 948
 949                                 if (!strcmp(search, key))
 950                                 {
 951                                         strncpy(dest, val, len - 1);
 952                                         found++;
 953                                         break;
 954                                 }
 955                         }
 956
 957                         va_end(ap_cur);
 958                 }
 959
 960                 break;
 961         }
 962
 963         va_end(ap);
 964
 965         close(sock);
 966         unlink(local.sun_path);
 967
 968         return found;
 969 }
 970
 971 #define nl80211_wpactl_query(ifname, ...) \
 972         __nl80211_wpactl_query(ifname, ##__VA_ARGS__, NULL)
 973
 974
 975 static char * nl80211_ifadd(const char *ifname)
 976 {
 977         char path[PATH_MAX];
 978         static char nif[IFNAMSIZ] = { 0 };
 979         struct nl80211_msg_conveyor *req;
 980         FILE *sysfs;
 981
 982         req = nl80211_msg(ifname, NL80211_CMD_NEW_INTERFACE, 0);
 983         if (req)
 984         {
 985                 snprintf(nif, sizeof(nif), "tmp.%s", ifname);
 986
 987                 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, nif);
 988                 NLA_PUT_U32(req->msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_STATION);
 989
 990                 nl80211_send(req, NULL, NULL);
 991
 992                 snprintf(path, sizeof(path) - 1,
 993                          "/proc/sys/net/ipv6/conf/%s/disable_ipv6", nif);
 994
 995                 if ((sysfs = fopen(path, "w")) != NULL)
 996                 {
 997                         fwrite("0\n", 1, 2, sysfs);
 998                         fclose(sysfs);
 999                 }
1000
1001                 return nif;
1002
1003         nla_put_failure:
1004                 nl80211_free(req);
1005         }
1006
1007         return NULL;
1008 }
1009
1010 static void nl80211_ifdel(const char *ifname)
1011 {
1012         struct nl80211_msg_conveyor *req;
1013         int err;
1014
1015         req = nl80211_msg(ifname, NL80211_CMD_DEL_INTERFACE, 0);
1016         if (req)
1017         {
1018                 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, ifname);
1019
1020                 nl80211_send(req, NULL, NULL);
1021                 return;
1022
1023         nla_put_failure:
1024                 nl80211_free(req);
1025         }
1026 }
1027
1028 static void nl80211_hostapd_hup(const char *ifname)
1029 {
1030         int fd, pid = 0;
1031         char buf[32];
1032         char *phy = nl80211_ifname2phy(ifname);
1033
1034         if (phy)
1035         {
1036                 snprintf(buf, sizeof(buf), "/var/run/wifi-%s.pid", phy);
1037                 if ((fd = open(buf, O_RDONLY)) >= 0)
1038                 {
1039                         if (read(fd, buf, sizeof(buf)) > 0)
1040                                 pid = atoi(buf);
1041
1042                         close(fd);
1043                 }
1044
1045                 if (pid > 0)
1046                         kill(pid, 1);
1047         }
1048 }
1049
1050
1051 static int nl80211_probe(const char *ifname)
1052 {
1053         return !!nl80211_ifname2phy(ifname);
1054 }
1055
1056 struct nl80211_ssid_bssid {
1057         unsigned char *ssid;
1058         unsigned char bssid[7];
1059 };
1060
1061 static int nl80211_get_macaddr_cb(struct nl_msg *msg, void *arg)
1062 {
1063         struct nl80211_ssid_bssid *sb = arg;
1064         struct nlattr **tb = nl80211_parse(msg);
1065
1066         if (tb[NL80211_ATTR_MAC]) {
1067                 sb->bssid[0] = 1;
1068                 memcpy(sb->bssid + 1, nla_data(tb[NL80211_ATTR_MAC]),
1069                        sizeof(sb->bssid) - 1);
1070         }
1071
1072         return NL_SKIP;
1073 }
1074
1075 static int nl80211_get_ssid_bssid_cb(struct nl_msg *msg, void *arg)
1076 {
1077         int ielen;
1078         unsigned char *ie;
1079         struct nl80211_ssid_bssid *sb = arg;
1080         struct nlattr **tb = nl80211_parse(msg);
1081         struct nlattr *bss[NL80211_BSS_MAX + 1];
1082
1083         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1084                 [NL80211_BSS_INFORMATION_ELEMENTS] = { 0 },
1085                 [NL80211_BSS_STATUS]               = { .type = NLA_U32 },
1086         };
1087
1088         if (!tb[NL80211_ATTR_BSS] ||
1089             nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1090                              bss_policy) ||
1091             !bss[NL80211_BSS_BSSID] ||
1092             !bss[NL80211_BSS_STATUS] ||
1093             !bss[NL80211_BSS_INFORMATION_ELEMENTS])
1094         {
1095                 return NL_SKIP;
1096         }
1097
1098         switch (nla_get_u32(bss[NL80211_BSS_STATUS]))
1099         {
1100         case NL80211_BSS_STATUS_ASSOCIATED:
1101         case NL80211_BSS_STATUS_AUTHENTICATED:
1102         case NL80211_BSS_STATUS_IBSS_JOINED:
1103
1104                 if (sb->ssid)
1105                 {
1106                         ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1107                         ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1108
1109                         while (ielen >= 2 && ielen >= ie[1])
1110                         {
1111                                 if (ie[0] == 0)
1112                                 {
1113                                         memcpy(sb->ssid, ie + 2, min(ie[1], IWINFO_ESSID_MAX_SIZE));
1114                                         return NL_SKIP;
1115                                 }
1116
1117                                 ielen -= ie[1] + 2;
1118                                 ie += ie[1] + 2;
1119                         }
1120                 }
1121                 else
1122                 {
1123                         sb->bssid[0] = 1;
1124                         memcpy(sb->bssid + 1, nla_data(bss[NL80211_BSS_BSSID]), 6);
1125                         return NL_SKIP;
1126                 }
1127
1128         default:
1129                 return NL_SKIP;
1130         }
1131 }
1132
1133 static int nl80211_get_ssid(const char *ifname, char *buf)
1134 {
1135         char *res;
1136         struct nl80211_ssid_bssid sb = { .ssid = (unsigned char *)buf };
1137
1138         /* try to find ssid from scan dump results */
1139         res = nl80211_phy2ifname(ifname);
1140         sb.ssid[0] = 0;
1141
1142         nl80211_request(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP,
1143                         nl80211_get_ssid_bssid_cb, &sb);
1144
1145         /* failed, try to find from hostapd info */
1146         if (sb.ssid[0] == 0)
1147                 nl80211_hostapd_query(ifname, "ssid", sb.ssid,
1148                                       IWINFO_ESSID_MAX_SIZE + 1);
1149
1150         /* failed, try to obtain Mesh ID */
1151         if (sb.ssid[0] == 0)
1152                 iwinfo_ubus_query(res ? res : ifname, "mesh_id",
1153                                   sb.ssid, IWINFO_ESSID_MAX_SIZE + 1);
1154
1155         return (sb.ssid[0] == 0) ? -1 : 0;
1156 }
1157
1158 static int nl80211_get_bssid(const char *ifname, char *buf)
1159 {
1160         char *res, bssid[sizeof("FF:FF:FF:FF:FF:FF\0")];
1161         struct nl80211_ssid_bssid sb = { };
1162
1163         res = nl80211_phy2ifname(ifname);
1164
1165         /* try to obtain mac address via NL80211_CMD_GET_INTERFACE */
1166         nl80211_request(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0,
1167                         nl80211_get_macaddr_cb, &sb);
1168
1169         /* failed, try to find bssid from scan dump results */
1170         if (sb.bssid[0] == 0)
1171                 nl80211_request(res ? res : ifname,
1172                                 NL80211_CMD_GET_SCAN, NLM_F_DUMP,
1173                                 nl80211_get_ssid_bssid_cb, &sb);
1174
1175         /* failed, try to find mac from hostapd info */
1176         if ((sb.bssid[0] == 0) &&
1177             nl80211_hostapd_query(ifname, "bssid", bssid, sizeof(bssid)))
1178         {
1179                 sb.bssid[0] = 1;
1180                 sb.bssid[1] = strtol(&bssid[0],  NULL, 16);
1181                 sb.bssid[2] = strtol(&bssid[3],  NULL, 16);
1182                 sb.bssid[3] = strtol(&bssid[6],  NULL, 16);
1183                 sb.bssid[4] = strtol(&bssid[9],  NULL, 16);
1184                 sb.bssid[5] = strtol(&bssid[12], NULL, 16);
1185                 sb.bssid[6] = strtol(&bssid[15], NULL, 16);
1186         }
1187
1188         if (sb.bssid[0])
1189         {
1190                 sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
1191                         sb.bssid[1], sb.bssid[2], sb.bssid[3],
1192                         sb.bssid[4], sb.bssid[5], sb.bssid[6]);
1193
1194                 return 0;
1195         }
1196
1197         return -1;
1198 }
1199
1200
1201 static int nl80211_get_frequency_scan_cb(struct nl_msg *msg, void *arg)
1202 {
1203         int *freq = arg;
1204         struct nlattr **attr = nl80211_parse(msg);
1205         struct nlattr *binfo[NL80211_BSS_MAX + 1];
1206
1207         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1208                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1209                 [NL80211_BSS_STATUS]    = { .type = NLA_U32 },
1210         };
1211
1212         if (attr[NL80211_ATTR_BSS] &&
1213             !nla_parse_nested(binfo, NL80211_BSS_MAX,
1214                               attr[NL80211_ATTR_BSS], bss_policy))
1215         {
1216                 if (binfo[NL80211_BSS_STATUS] && binfo[NL80211_BSS_FREQUENCY])
1217                         *freq = nla_get_u32(binfo[NL80211_BSS_FREQUENCY]);
1218         }
1219
1220         return NL_SKIP;
1221 }
1222
1223 static int nl80211_get_frequency_info_cb(struct nl_msg *msg, void *arg)
1224 {
1225         int *freq = arg;
1226         struct nlattr **tb = nl80211_parse(msg);
1227
1228         if (tb[NL80211_ATTR_WIPHY_FREQ])
1229                 *freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
1230
1231         return NL_SKIP;
1232 }
1233
1234 static int nl80211_get_frequency(const char *ifname, int *buf)
1235 {
1236         char *res, channel[4], hwmode[3];
1237
1238         /* try to find frequency from interface info */
1239         res = nl80211_phy2ifname(ifname);
1240         *buf = 0;
1241
1242         nl80211_request(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0,
1243                         nl80211_get_frequency_info_cb, buf);
1244
1245         /* failed, try to find frequency from hostapd info */
1246         if ((*buf == 0) &&
1247             nl80211_hostapd_query(ifname, "hw_mode", hwmode, sizeof(hwmode),
1248                                           "channel", channel, sizeof(channel)) == 2)
1249         {
1250                 *buf = nl80211_channel2freq(atoi(channel), hwmode);
1251         }
1252
1253         /* failed, try to find frequency from scan results */
1254         if (*buf == 0)
1255         {
1256                 res = nl80211_phy2ifname(ifname);
1257
1258                 nl80211_request(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP,
1259                                 nl80211_get_frequency_scan_cb, buf);
1260         }
1261
1262         return (*buf == 0) ? -1 : 0;
1263 }
1264
1265 static int nl80211_get_channel(const char *ifname, int *buf)
1266 {
1267         if (!nl80211_get_frequency(ifname, buf))
1268         {
1269                 *buf = nl80211_freq2channel(*buf);
1270                 return 0;
1271         }
1272
1273         return -1;
1274 }
1275
1276 static int nl80211_get_txpower_cb(struct nl_msg *msg, void *arg)
1277 {
1278         int *buf = arg;
1279         struct nlattr **tb = nl80211_parse(msg);
1280
1281         if (tb[NL80211_ATTR_WIPHY_TX_POWER_LEVEL])
1282                 *buf = iwinfo_mbm2dbm(nla_get_u32(tb[NL80211_ATTR_WIPHY_TX_POWER_LEVEL]));
1283
1284         return NL_SKIP;
1285 }
1286
1287 static int nl80211_get_txpower(const char *ifname, int *buf)
1288 {
1289         char *res;
1290
1291         res = nl80211_phy2ifname(ifname);
1292         *buf = 0;
1293
1294         if (nl80211_request(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0,
1295                             nl80211_get_txpower_cb, buf))
1296                 return -1;
1297
1298         return 0;
1299 }
1300
1301
1302 static int nl80211_fill_signal_cb(struct nl_msg *msg, void *arg)
1303 {
1304         int8_t dbm;
1305         int16_t mbit;
1306         struct nl80211_rssi_rate *rr = arg;
1307         struct nlattr **attr = nl80211_parse(msg);
1308         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1309         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1310
1311         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
1312                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32    },
1313                 [NL80211_STA_INFO_RX_BYTES]      = { .type = NLA_U32    },
1314                 [NL80211_STA_INFO_TX_BYTES]      = { .type = NLA_U32    },
1315                 [NL80211_STA_INFO_RX_PACKETS]    = { .type = NLA_U32    },
1316                 [NL80211_STA_INFO_TX_PACKETS]    = { .type = NLA_U32    },
1317                 [NL80211_STA_INFO_SIGNAL]        = { .type = NLA_U8     },
1318                 [NL80211_STA_INFO_TX_BITRATE]    = { .type = NLA_NESTED },
1319                 [NL80211_STA_INFO_LLID]          = { .type = NLA_U16    },
1320                 [NL80211_STA_INFO_PLID]          = { .type = NLA_U16    },
1321                 [NL80211_STA_INFO_PLINK_STATE]   = { .type = NLA_U8     },
1322         };
1323
1324         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1325                 [NL80211_RATE_INFO_BITRATE]      = { .type = NLA_U16  },
1326                 [NL80211_RATE_INFO_MCS]          = { .type = NLA_U8   },
1327                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1328                 [NL80211_RATE_INFO_SHORT_GI]     = { .type = NLA_FLAG },
1329         };
1330
1331         if (attr[NL80211_ATTR_STA_INFO])
1332         {
1333                 if (!nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1334                                       attr[NL80211_ATTR_STA_INFO], stats_policy))
1335                 {
1336                         if (sinfo[NL80211_STA_INFO_SIGNAL])
1337                         {
1338                                 dbm = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1339                                 rr->rssi = (rr->rssi * rr->rssi_samples + dbm) / (rr->rssi_samples + 1);
1340                                 rr->rssi_samples++;
1341                         }
1342
1343                         if (sinfo[NL80211_STA_INFO_TX_BITRATE])
1344                         {
1345                                 if (!nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1346                                                       sinfo[NL80211_STA_INFO_TX_BITRATE],
1347                                                       rate_policy))
1348                                 {
1349                                         if (rinfo[NL80211_RATE_INFO_BITRATE])
1350                                         {
1351                                                 mbit = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]);
1352                                                 rr->rate = (rr->rate * rr->rate_samples + mbit) / (rr->rate_samples + 1);
1353                                                 rr->rate_samples++;
1354                                         }
1355                                 }
1356                         }
1357                 }
1358         }
1359
1360         return NL_SKIP;
1361 }
1362
1363 static void nl80211_fill_signal(const char *ifname, struct nl80211_rssi_rate *r)
1364 {
1365         DIR *d;
1366         struct dirent *de;
1367
1368         memset(r, 0, sizeof(*r));
1369
1370         if ((d = opendir("/sys/class/net")) != NULL)
1371         {
1372                 while ((de = readdir(d)) != NULL)
1373                 {
1374                         if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
1375                             (!de->d_name[strlen(ifname)] ||
1376                              !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
1377                         {
1378                                 nl80211_request(de->d_name, NL80211_CMD_GET_STATION,
1379                                                 NLM_F_DUMP, nl80211_fill_signal_cb, r);
1380                         }
1381                 }
1382
1383                 closedir(d);
1384         }
1385 }
1386
1387 static int nl80211_get_bitrate(const char *ifname, int *buf)
1388 {
1389         struct nl80211_rssi_rate rr;
1390
1391         nl80211_fill_signal(ifname, &rr);
1392
1393         if (rr.rate_samples)
1394         {
1395                 *buf = (rr.rate * 100);
1396                 return 0;
1397         }
1398
1399         return -1;
1400 }
1401
1402 static int nl80211_get_signal(const char *ifname, int *buf)
1403 {
1404         struct nl80211_rssi_rate rr;
1405
1406         nl80211_fill_signal(ifname, &rr);
1407
1408         if (rr.rssi_samples)
1409         {
1410                 *buf = rr.rssi;
1411                 return 0;
1412         }
1413
1414         return -1;
1415 }
1416
1417 static int nl80211_get_noise_cb(struct nl_msg *msg, void *arg)
1418 {
1419         int8_t *noise = arg;
1420         struct nlattr **tb = nl80211_parse(msg);
1421         struct nlattr *si[NL80211_SURVEY_INFO_MAX + 1];
1422
1423         static struct nla_policy sp[NL80211_SURVEY_INFO_MAX + 1] = {
1424                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1425                 [NL80211_SURVEY_INFO_NOISE]     = { .type = NLA_U8  },
1426         };
1427
1428         if (!tb[NL80211_ATTR_SURVEY_INFO])
1429                 return NL_SKIP;
1430
1431         if (nla_parse_nested(si, NL80211_SURVEY_INFO_MAX,
1432                              tb[NL80211_ATTR_SURVEY_INFO], sp))
1433                 return NL_SKIP;
1434
1435         if (!si[NL80211_SURVEY_INFO_NOISE])
1436                 return NL_SKIP;
1437
1438         if (!*noise || si[NL80211_SURVEY_INFO_IN_USE])
1439                 *noise = (int8_t)nla_get_u8(si[NL80211_SURVEY_INFO_NOISE]);
1440
1441         return NL_SKIP;
1442 }
1443
1444
1445 static int nl80211_get_noise(const char *ifname, int *buf)
1446 {
1447         int8_t noise = 0;
1448
1449         if (nl80211_request(ifname, NL80211_CMD_GET_SURVEY, NLM_F_DUMP,
1450                             nl80211_get_noise_cb, &noise))
1451                 goto out;
1452
1453         *buf = noise;
1454         return 0;
1455
1456 out:
1457         *buf = 0;
1458         return -1;
1459 }
1460
1461 static int nl80211_get_quality(const char *ifname, int *buf)
1462 {
1463         int signal;
1464
1465         if (!nl80211_get_signal(ifname, &signal))
1466         {
1467                 /* A positive signal level is usually just a quality
1468                  * value, pass through as-is */
1469                 if (signal >= 0)
1470                 {
1471                         *buf = signal;
1472                 }
1473
1474                 /* The cfg80211 wext compat layer assumes a signal range
1475                  * of -110 dBm to -40 dBm, the quality value is derived
1476                  * by adding 110 to the signal level */
1477                 else
1478                 {
1479                         if (signal < -110)
1480                                 signal = -110;
1481                         else if (signal > -40)
1482                                 signal = -40;
1483
1484                         *buf = (signal + 110);
1485                 }
1486
1487                 return 0;
1488         }
1489
1490         return -1;
1491 }
1492
1493 static int nl80211_get_quality_max(const char *ifname, int *buf)
1494 {
1495         /* The cfg80211 wext compat layer assumes a maximum
1496          * quality of 70 */
1497         *buf = 70;
1498
1499         return 0;
1500 }
1501
1502 static int nl80211_check_wepkey(const char *key)
1503 {
1504         if (key && *key)
1505         {
1506                 switch (strlen(key))
1507                 {
1508                 case 5:
1509                 case 10:
1510                         return IWINFO_CIPHER_WEP40;
1511
1512                 case 13:
1513                 case 26:
1514                         return IWINFO_CIPHER_WEP104;
1515                 }
1516         }
1517
1518         return 0;
1519 }
1520
1521 static struct {
1522         const char *match;
1523         int version;
1524         int suite;
1525 } wpa_key_mgmt_strings[] = {
1526         { "IEEE 802.1X/EAP", 0, IWINFO_KMGMT_8021x },
1527         { "EAP-SUITE-B-192", 4, IWINFO_KMGMT_8021x },
1528         { "EAP-SUITE-B",     4, IWINFO_KMGMT_8021x },
1529         { "EAP-SHA256",      0, IWINFO_KMGMT_8021x },
1530         { "PSK-SHA256",      0, IWINFO_KMGMT_PSK },
1531         { "NONE",            0, IWINFO_KMGMT_NONE },
1532         { "None",            0, IWINFO_KMGMT_NONE },
1533         { "PSK",             0, IWINFO_KMGMT_PSK },
1534         { "EAP",             0, IWINFO_KMGMT_8021x },
1535         { "SAE",             4, IWINFO_KMGMT_SAE },
1536         { "OWE",             4, IWINFO_KMGMT_OWE }
1537 };
1538
1539 static void parse_wpa_suites(const char *str, int defversion,
1540                              uint8_t *versions, uint8_t *suites)
1541 {
1542         size_t l;
1543         int i, version;
1544         const char *p, *q, *m, *sep = " \t\n,-+/";
1545
1546         for (p = str; *p; )
1547         {
1548                 q = p;
1549
1550                 for (i = 0; i < ARRAY_SIZE(wpa_key_mgmt_strings); i++)
1551                 {
1552                         m = wpa_key_mgmt_strings[i].match;
1553                         l = strlen(m);
1554
1555                         if (!strncmp(q, m, l) && (!q[l] || strchr(sep, q[l])))
1556                         {
1557                                 if (wpa_key_mgmt_strings[i].version != 0)
1558                                         version = wpa_key_mgmt_strings[i].version;
1559                                 else
1560                                         version = defversion;
1561
1562                                 *versions |= version;
1563                                 *suites |= wpa_key_mgmt_strings[i].suite;
1564
1565                                 q += l;
1566                                 break;
1567                         }
1568                 }
1569
1570                 if (q == p)
1571                         q += strcspn(q, sep);
1572
1573                 p = q + strspn(q, sep);
1574         }
1575 }
1576
1577 static struct {
1578         const char *match;
1579         int cipher;
1580 } wpa_cipher_strings[] = {
1581         { "WEP-104", IWINFO_CIPHER_WEP104 },
1582         { "WEP-40",  IWINFO_CIPHER_WEP40 },
1583         { "NONE",    IWINFO_CIPHER_NONE },
1584         { "TKIP",    IWINFO_CIPHER_TKIP },
1585         { "CCMP",    IWINFO_CIPHER_CCMP }
1586 };
1587
1588 static void parse_wpa_ciphers(const char *str, uint8_t *ciphers)
1589 {
1590         int i;
1591         size_t l;
1592         const char *m, *p, *q, *sep = " \t\n,-+/";
1593
1594         for (p = str; *p; )
1595         {
1596                 q = p;
1597
1598                 for (i = 0; i < ARRAY_SIZE(wpa_cipher_strings); i++)
1599                 {
1600                         m = wpa_cipher_strings[i].match;
1601                         l = strlen(m);
1602
1603                         if (!strncmp(q, m, l) && (!q[l] || strchr(sep, q[l])))
1604                         {
1605                                 *ciphers |= wpa_cipher_strings[i].cipher;
1606
1607                                 q += l;
1608                                 break;
1609                         }
1610                 }
1611
1612                 if (q == p)
1613                         q += strcspn(q, sep);
1614
1615                 p = q + strspn(q, sep);
1616         }
1617 }
1618
1619 static int nl80211_get_encryption(const char *ifname, char *buf)
1620 {
1621         char *p;
1622         int opmode;
1623         uint8_t wpa_version = 0;
1624         char wpa[2], wpa_key_mgmt[64], wpa_pairwise[16], wpa_groupwise[16];
1625         char auth_algs[2], wep_key0[27], wep_key1[27], wep_key2[27], wep_key3[27];
1626         char mode[16];
1627
1628         struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf;
1629
1630         /* WPA supplicant */
1631         if (nl80211_wpactl_query(ifname,
1632                         "pairwise_cipher", wpa_pairwise,  sizeof(wpa_pairwise),
1633                         "group_cipher",    wpa_groupwise, sizeof(wpa_groupwise),
1634                         "key_mgmt",        wpa_key_mgmt,  sizeof(wpa_key_mgmt),
1635                         "mode",            mode,          sizeof(mode)))
1636         {
1637                 /* WEP or Open */
1638                 if (!strcmp(wpa_key_mgmt, "NONE"))
1639                 {
1640                         parse_wpa_ciphers(wpa_pairwise, &c->pair_ciphers);
1641                         parse_wpa_ciphers(wpa_groupwise, &c->group_ciphers);
1642
1643                         if (c->pair_ciphers != 0 && c->pair_ciphers != IWINFO_CIPHER_NONE) {
1644                                 c->enabled     = 1;
1645                                 c->auth_suites = IWINFO_KMGMT_NONE;
1646                                 c->auth_algs   = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
1647                         }
1648                         else {
1649                                 c->pair_ciphers = 0;
1650                                 c->group_ciphers = 0;
1651                         }
1652                 }
1653
1654                 /* MESH with SAE */
1655                 else if (!strcmp(mode, "mesh") && !strcmp(wpa_key_mgmt, "UNKNOWN"))
1656                 {
1657                         c->enabled = 1;
1658                         c->wpa_version = 4;
1659                         c->auth_suites = IWINFO_KMGMT_SAE;
1660                         c->pair_ciphers = IWINFO_CIPHER_CCMP;
1661                         c->group_ciphers = IWINFO_CIPHER_CCMP;
1662                 }
1663
1664                 /* WPA */
1665                 else
1666                 {
1667                         parse_wpa_ciphers(wpa_pairwise, &c->pair_ciphers);
1668                         parse_wpa_ciphers(wpa_groupwise, &c->group_ciphers);
1669
1670                         p = wpa_key_mgmt;
1671
1672                         if (!strncmp(p, "WPA2-", 5) || !strncmp(p, "WPA2/", 5))
1673                         {
1674                                 p += 5;
1675                                 wpa_version = 2;
1676                         }
1677                         else if (!strncmp(p, "WPA-", 4))
1678                         {
1679                                 p += 4;
1680                                 wpa_version = 1;
1681                         }
1682
1683                         parse_wpa_suites(p, wpa_version, &c->wpa_version, &c->auth_suites);
1684
1685                         c->enabled = !!(c->wpa_version && c->auth_suites);
1686                 }
1687
1688                 return 0;
1689         }
1690
1691         /* Hostapd */
1692         else if (nl80211_hostapd_query(ifname,
1693                                 "wpa",          wpa,          sizeof(wpa),
1694                                 "wpa_key_mgmt", wpa_key_mgmt, sizeof(wpa_key_mgmt),
1695                                 "wpa_pairwise", wpa_pairwise, sizeof(wpa_pairwise),
1696                                 "auth_algs",    auth_algs,    sizeof(auth_algs),
1697                                 "wep_key0",     wep_key0,     sizeof(wep_key0),
1698                                 "wep_key1",     wep_key1,     sizeof(wep_key1),
1699                                 "wep_key2",     wep_key2,     sizeof(wep_key2),
1700                                 "wep_key3",     wep_key3,     sizeof(wep_key3)))
1701         {
1702                 c->wpa_version = 0;
1703
1704                 if (wpa_key_mgmt[0])
1705                 {
1706                         for (p = strtok(wpa_key_mgmt, " \t"); p != NULL; p = strtok(NULL, " \t"))
1707                         {
1708                                 if (!strncmp(p, "WPA-", 4))
1709                                         p += 4;
1710
1711                                 parse_wpa_suites(p, atoi(wpa), &c->wpa_version, &c->auth_suites);
1712                         }
1713
1714                         c->enabled = c->wpa_version ? 1 : 0;
1715                 }
1716
1717                 if (wpa_pairwise[0])
1718                         parse_wpa_ciphers(wpa_pairwise, &c->pair_ciphers);
1719
1720                 if (auth_algs[0])
1721                 {
1722                         switch (atoi(auth_algs))
1723                         {
1724                         case 1:
1725                                 c->auth_algs |= IWINFO_AUTH_OPEN;
1726                                 break;
1727
1728                         case 2:
1729                                 c->auth_algs |= IWINFO_AUTH_SHARED;
1730                                 break;
1731
1732                         case 3:
1733                                 c->auth_algs |= IWINFO_AUTH_OPEN;
1734                                 c->auth_algs |= IWINFO_AUTH_SHARED;
1735                                 break;
1736                         }
1737
1738                         c->pair_ciphers |= nl80211_check_wepkey(wep_key0);
1739                         c->pair_ciphers |= nl80211_check_wepkey(wep_key1);
1740                         c->pair_ciphers |= nl80211_check_wepkey(wep_key2);
1741                         c->pair_ciphers |= nl80211_check_wepkey(wep_key3);
1742
1743                         c->enabled = (c->auth_algs && c->pair_ciphers) ? 1 : 0;
1744                 }
1745
1746                 c->group_ciphers = c->pair_ciphers;
1747
1748                 return 0;
1749         }
1750
1751         /* Ad-Hoc or Mesh interfaces without wpa_supplicant are open */
1752         else if (!nl80211_get_mode(ifname, &opmode) &&
1753                  (opmode == IWINFO_OPMODE_ADHOC ||
1754                   opmode == IWINFO_OPMODE_MESHPOINT))
1755         {
1756                 c->enabled = 0;
1757
1758                 return 0;
1759         }
1760
1761
1762         return -1;
1763 }
1764
1765 static int nl80211_get_phyname(const char *ifname, char *buf)
1766 {
1767         const char *name;
1768
1769         name = nl80211_ifname2phy(ifname);
1770
1771         if (name)
1772         {
1773                 strcpy(buf, name);
1774                 return 0;
1775         }
1776         else if ((name = nl80211_phy2ifname(ifname)) != NULL)
1777         {
1778                 name = nl80211_ifname2phy(name);
1779
1780                 if (name)
1781                 {
1782                         strcpy(buf, ifname);
1783                         return 0;
1784                 }
1785         }
1786
1787         return -1;
1788 }
1789
1790
1791 static void nl80211_parse_rateinfo(struct nlattr **ri,
1792                                    struct iwinfo_rate_entry *re)
1793 {
1794         if (ri[NL80211_RATE_INFO_BITRATE32])
1795                 re->rate = nla_get_u32(ri[NL80211_RATE_INFO_BITRATE32]) * 100;
1796         else if (ri[NL80211_RATE_INFO_BITRATE])
1797                 re->rate = nla_get_u16(ri[NL80211_RATE_INFO_BITRATE]) * 100;
1798
1799         if (ri[NL80211_RATE_INFO_VHT_MCS])
1800         {
1801                 re->is_vht = 1;
1802                 re->mcs = nla_get_u8(ri[NL80211_RATE_INFO_VHT_MCS]);
1803
1804                 if (ri[NL80211_RATE_INFO_VHT_NSS])
1805                         re->nss = nla_get_u8(ri[NL80211_RATE_INFO_VHT_NSS]);
1806         }
1807         else if (ri[NL80211_RATE_INFO_MCS])
1808         {
1809                 re->is_ht = 1;
1810                 re->mcs = nla_get_u8(ri[NL80211_RATE_INFO_MCS]);
1811         }
1812
1813         if (ri[NL80211_RATE_INFO_5_MHZ_WIDTH])
1814                 re->mhz = 5;
1815         else if (ri[NL80211_RATE_INFO_10_MHZ_WIDTH])
1816                 re->mhz = 10;
1817         else if (ri[NL80211_RATE_INFO_40_MHZ_WIDTH])
1818                 re->mhz = 40;
1819         else if (ri[NL80211_RATE_INFO_80_MHZ_WIDTH])
1820                 re->mhz = 80;
1821         else if (ri[NL80211_RATE_INFO_80P80_MHZ_WIDTH] ||
1822                  ri[NL80211_RATE_INFO_160_MHZ_WIDTH])
1823                 re->mhz = 160;
1824         else
1825                 re->mhz = 20;
1826
1827         if (ri[NL80211_RATE_INFO_SHORT_GI])
1828                 re->is_short_gi = 1;
1829
1830         re->is_40mhz = (re->mhz == 40);
1831 }
1832
1833 static int nl80211_get_survey_cb(struct nl_msg *msg, void *arg)
1834 {
1835         struct nl80211_array_buf *arr = arg;
1836         struct iwinfo_survey_entry *e = arr->buf;
1837         struct nlattr **attr = nl80211_parse(msg);
1838         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1839         int rc;
1840
1841         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1842                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1843                 [NL80211_SURVEY_INFO_NOISE]  = { .type = NLA_U8     },
1844                 [NL80211_SURVEY_INFO_TIME] = { .type = NLA_U64   },
1845                 [NL80211_SURVEY_INFO_TIME_BUSY] = { .type = NLA_U64   },
1846                 [NL80211_SURVEY_INFO_TIME_EXT_BUSY] = { .type = NLA_U64   },
1847                 [NL80211_SURVEY_INFO_TIME_RX] = { .type = NLA_U64   },
1848                 [NL80211_SURVEY_INFO_TIME_TX] = { .type = NLA_U64   },
1849         };
1850
1851         rc = nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1852                                 attr[NL80211_ATTR_SURVEY_INFO],
1853                                 survey_policy);
1854         if (rc)
1855                 return NL_SKIP;
1856
1857         /* advance to end of array */
1858         e += arr->count;
1859         memset(e, 0, sizeof(*e));
1860
1861         if (sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1862                 e->mhz = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
1863
1864         if (sinfo[NL80211_SURVEY_INFO_NOISE])
1865                 e->noise = nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1866
1867         if (sinfo[NL80211_SURVEY_INFO_TIME])
1868                 e->active_time = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME]);
1869
1870         if (sinfo[NL80211_SURVEY_INFO_TIME_BUSY])
1871                 e->busy_time = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_BUSY]);
1872
1873         if (sinfo[NL80211_SURVEY_INFO_TIME_EXT_BUSY])
1874                 e->busy_time_ext = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_EXT_BUSY]);
1875
1876         if (sinfo[NL80211_SURVEY_INFO_TIME_RX])
1877                 e->rxtime = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_RX]);
1878
1879         if (sinfo[NL80211_SURVEY_INFO_TIME_TX])
1880                 e->txtime = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_TX]);
1881
1882         arr->count++;
1883         return NL_SKIP;
1884 }
1885
1886
1887 static void plink_state_to_str(char *dst, unsigned state)
1888 {
1889         switch (state) {
1890         case NL80211_PLINK_LISTEN:
1891                 strcpy(dst, "LISTEN");
1892                 break;
1893         case NL80211_PLINK_OPN_SNT:
1894                 strcpy(dst, "OPN_SNT");
1895                 break;
1896         case NL80211_PLINK_OPN_RCVD:
1897                 strcpy(dst, "OPN_RCVD");
1898                 break;
1899         case NL80211_PLINK_CNF_RCVD:
1900                 strcpy(dst, "CNF_RCVD");
1901                 break;
1902         case NL80211_PLINK_ESTAB:
1903                 strcpy(dst, "ESTAB");
1904                 break;
1905         case NL80211_PLINK_HOLDING:
1906                 strcpy(dst, "HOLDING");
1907                 break;
1908         case NL80211_PLINK_BLOCKED:
1909                 strcpy(dst, "BLOCKED");
1910                 break;
1911         default:
1912                 strcpy(dst, "UNKNOWN");
1913                 break;
1914         }
1915 }
1916
1917 static void power_mode_to_str(char *dst, struct nlattr *a)
1918 {
1919         enum nl80211_mesh_power_mode pm = nla_get_u32(a);
1920
1921         switch (pm) {
1922         case NL80211_MESH_POWER_ACTIVE:
1923                 strcpy(dst, "ACTIVE");
1924                 break;
1925         case NL80211_MESH_POWER_LIGHT_SLEEP:
1926                 strcpy(dst, "LIGHT SLEEP");
1927                 break;
1928         case NL80211_MESH_POWER_DEEP_SLEEP:
1929                 strcpy(dst, "DEEP SLEEP");
1930                 break;
1931         default:
1932                 strcpy(dst, "UNKNOWN");
1933                 break;
1934         }
1935 }
1936
1937 static int nl80211_get_assoclist_cb(struct nl_msg *msg, void *arg)
1938 {
1939         struct nl80211_array_buf *arr = arg;
1940         struct iwinfo_assoclist_entry *e = arr->buf;
1941         struct nlattr **attr = nl80211_parse(msg);
1942         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1943         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1944         struct nl80211_sta_flag_update *sta_flags;
1945
1946         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
1947                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32    },
1948                 [NL80211_STA_INFO_RX_PACKETS]    = { .type = NLA_U32    },
1949                 [NL80211_STA_INFO_TX_PACKETS]    = { .type = NLA_U32    },
1950                 [NL80211_STA_INFO_RX_BITRATE]    = { .type = NLA_NESTED },
1951                 [NL80211_STA_INFO_TX_BITRATE]    = { .type = NLA_NESTED },
1952                 [NL80211_STA_INFO_SIGNAL]        = { .type = NLA_U8     },
1953                 [NL80211_STA_INFO_SIGNAL_AVG]    = { .type = NLA_U8     },
1954                 [NL80211_STA_INFO_RX_BYTES]      = { .type = NLA_U32    },
1955                 [NL80211_STA_INFO_TX_BYTES]      = { .type = NLA_U32    },
1956                 [NL80211_STA_INFO_TX_RETRIES]    = { .type = NLA_U32    },
1957                 [NL80211_STA_INFO_TX_FAILED]     = { .type = NLA_U32    },
1958                 [NL80211_STA_INFO_CONNECTED_TIME]= { .type = NLA_U32    },
1959                 [NL80211_STA_INFO_RX_DROP_MISC]  = { .type = NLA_U64    },
1960                 [NL80211_STA_INFO_T_OFFSET]      = { .type = NLA_U64    },
1961                 [NL80211_STA_INFO_STA_FLAGS] =
1962                         { .minlen = sizeof(struct nl80211_sta_flag_update) },
1963                 [NL80211_STA_INFO_EXPECTED_THROUGHPUT]   = { .type = NLA_U32    },
1964                 /* mesh */
1965                 [NL80211_STA_INFO_LLID]          = { .type = NLA_U16    },
1966                 [NL80211_STA_INFO_PLID]          = { .type = NLA_U16    },
1967                 [NL80211_STA_INFO_PLINK_STATE]   = { .type = NLA_U8     },
1968                 [NL80211_STA_INFO_LOCAL_PM]      = { .type = NLA_U32    },
1969                 [NL80211_STA_INFO_PEER_PM]       = { .type = NLA_U32    },
1970                 [NL80211_STA_INFO_NONPEER_PM]    = { .type = NLA_U32    },
1971         };
1972
1973         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1974                 [NL80211_RATE_INFO_BITRATE]      = { .type = NLA_U16    },
1975                 [NL80211_RATE_INFO_MCS]          = { .type = NLA_U8     },
1976                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG   },
1977                 [NL80211_RATE_INFO_SHORT_GI]     = { .type = NLA_FLAG   },
1978         };
1979
1980         /* advance to end of array */
1981         e += arr->count;
1982         memset(e, 0, sizeof(*e));
1983
1984         if (attr[NL80211_ATTR_MAC])
1985                 memcpy(e->mac, nla_data(attr[NL80211_ATTR_MAC]), 6);
1986
1987         if (attr[NL80211_ATTR_STA_INFO] &&
1988             !nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1989                               attr[NL80211_ATTR_STA_INFO], stats_policy))
1990         {
1991                 if (sinfo[NL80211_STA_INFO_SIGNAL])
1992                         e->signal = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1993
1994                 if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1995                         e->signal_avg = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1996
1997                 if (sinfo[NL80211_STA_INFO_INACTIVE_TIME])
1998                         e->inactive = nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]);
1999
2000                 if (sinfo[NL80211_STA_INFO_CONNECTED_TIME])
2001                         e->connected_time = nla_get_u32(sinfo[NL80211_STA_INFO_CONNECTED_TIME]);
2002
2003                 if (sinfo[NL80211_STA_INFO_RX_PACKETS])
2004                         e->rx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS]);
2005
2006                 if (sinfo[NL80211_STA_INFO_TX_PACKETS])
2007                         e->tx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS]);
2008
2009                 if (sinfo[NL80211_STA_INFO_RX_BITRATE] &&
2010                     !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
2011                                       sinfo[NL80211_STA_INFO_RX_BITRATE], rate_policy))
2012                         nl80211_parse_rateinfo(rinfo, &e->rx_rate);
2013
2014                 if (sinfo[NL80211_STA_INFO_TX_BITRATE] &&
2015                     !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
2016                                       sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy))
2017                         nl80211_parse_rateinfo(rinfo, &e->tx_rate);
2018
2019                 if (sinfo[NL80211_STA_INFO_RX_BYTES])
2020                         e->rx_bytes = nla_get_u32(sinfo[NL80211_STA_INFO_RX_BYTES]);
2021
2022                 if (sinfo[NL80211_STA_INFO_TX_BYTES])
2023                         e->tx_bytes = nla_get_u32(sinfo[NL80211_STA_INFO_TX_BYTES]);
2024
2025                 if (sinfo[NL80211_STA_INFO_TX_RETRIES])
2026                         e->tx_retries = nla_get_u32(sinfo[NL80211_STA_INFO_TX_RETRIES]);
2027
2028                 if (sinfo[NL80211_STA_INFO_TX_FAILED])
2029                         e->tx_failed = nla_get_u32(sinfo[NL80211_STA_INFO_TX_FAILED]);
2030
2031                 if (sinfo[NL80211_STA_INFO_T_OFFSET])
2032                         e->t_offset = nla_get_u64(sinfo[NL80211_STA_INFO_T_OFFSET]);
2033
2034                 if (sinfo[NL80211_STA_INFO_RX_DROP_MISC])
2035                         e->rx_drop_misc = nla_get_u64(sinfo[NL80211_STA_INFO_RX_DROP_MISC]);
2036
2037                 if (sinfo[NL80211_STA_INFO_EXPECTED_THROUGHPUT])
2038                         e->thr = nla_get_u32(sinfo[NL80211_STA_INFO_EXPECTED_THROUGHPUT]);
2039
2040                 /* mesh */
2041                 if (sinfo[NL80211_STA_INFO_LLID])
2042                         e->llid = nla_get_u16(sinfo[NL80211_STA_INFO_LLID]);
2043
2044                 if (sinfo[NL80211_STA_INFO_PLID])
2045                         e->plid = nla_get_u16(sinfo[NL80211_STA_INFO_PLID]);
2046
2047                 if (sinfo[NL80211_STA_INFO_PLINK_STATE])
2048                         plink_state_to_str(e->plink_state,
2049                                 nla_get_u8(sinfo[NL80211_STA_INFO_PLINK_STATE]));
2050
2051                 if (sinfo[NL80211_STA_INFO_LOCAL_PM])
2052                         power_mode_to_str(e->local_ps, sinfo[NL80211_STA_INFO_LOCAL_PM]);
2053                 if (sinfo[NL80211_STA_INFO_PEER_PM])
2054                         power_mode_to_str(e->peer_ps, sinfo[NL80211_STA_INFO_PEER_PM]);
2055                 if (sinfo[NL80211_STA_INFO_NONPEER_PM])
2056                         power_mode_to_str(e->nonpeer_ps, sinfo[NL80211_STA_INFO_NONPEER_PM]);
2057
2058                 /* Station flags */
2059                 if (sinfo[NL80211_STA_INFO_STA_FLAGS])
2060                 {
2061                         sta_flags = (struct nl80211_sta_flag_update *)
2062                                 nla_data(sinfo[NL80211_STA_INFO_STA_FLAGS]);
2063
2064                         if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
2065                             sta_flags->set & BIT(NL80211_STA_FLAG_AUTHORIZED))
2066                                 e->is_authorized = 1;
2067
2068                         if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
2069                             sta_flags->set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
2070                                 e->is_authenticated = 1;
2071
2072                         if (sta_flags->mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) &&
2073                             sta_flags->set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
2074                                 e->is_preamble_short = 1;
2075
2076                         if (sta_flags->mask & BIT(NL80211_STA_FLAG_WME) &&
2077                             sta_flags->set & BIT(NL80211_STA_FLAG_WME))
2078                                 e->is_wme = 1;
2079
2080                         if (sta_flags->mask & BIT(NL80211_STA_FLAG_MFP) &&
2081                             sta_flags->set & BIT(NL80211_STA_FLAG_MFP))
2082                                 e->is_mfp = 1;
2083
2084                         if (sta_flags->mask & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
2085                             sta_flags->set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2086                                 e->is_tdls = 1;
2087                 }
2088         }
2089
2090         e->noise = 0; /* filled in by caller */
2091         arr->count++;
2092
2093         return NL_SKIP;
2094 }
2095
2096 static int nl80211_get_survey(const char *ifname, char *buf, int *len)
2097 {
2098         struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
2099         int rc;
2100
2101         rc = nl80211_request(ifname, NL80211_CMD_GET_SURVEY,
2102                         NLM_F_DUMP, nl80211_get_survey_cb, &arr);
2103         if (!rc)
2104                 *len = (arr.count * sizeof(struct iwinfo_survey_entry));
2105         else
2106                 *len = 0;
2107
2108         return 0;
2109 }
2110
2111 static int nl80211_get_assoclist(const char *ifname, char *buf, int *len)
2112 {
2113         DIR *d;
2114         int i, noise = 0;
2115         struct dirent *de;
2116         struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
2117         struct iwinfo_assoclist_entry *e;
2118
2119         if ((d = opendir("/sys/class/net")) != NULL)
2120         {
2121                 while ((de = readdir(d)) != NULL)
2122                 {
2123                         if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
2124                             (!de->d_name[strlen(ifname)] ||
2125                              !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
2126                         {
2127                                 nl80211_request(de->d_name, NL80211_CMD_GET_STATION,
2128                                                 NLM_F_DUMP, nl80211_get_assoclist_cb, &arr);
2129                         }
2130                 }
2131
2132                 closedir(d);
2133
2134                 if (!nl80211_get_noise(ifname, &noise))
2135                         for (i = 0, e = arr.buf; i < arr.count; i++, e++)
2136                                 e->noise = noise;
2137
2138                 *len = (arr.count * sizeof(struct iwinfo_assoclist_entry));
2139                 return 0;
2140         }
2141
2142         return -1;
2143 }
2144
2145 static int nl80211_get_txpwrlist_cb(struct nl_msg *msg, void *arg)
2146 {
2147         int *dbm_max = arg;
2148         int ch_cur, ch_cmp, bands_remain, freqs_remain;
2149
2150         struct nlattr **attr = nl80211_parse(msg);
2151         struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
2152         struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
2153         struct nlattr *band, *freq;
2154
2155         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2156                 [NL80211_FREQUENCY_ATTR_FREQ]         = { .type = NLA_U32  },
2157                 [NL80211_FREQUENCY_ATTR_DISABLED]     = { .type = NLA_FLAG },
2158                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2159                 [NL80211_FREQUENCY_ATTR_NO_IBSS]      = { .type = NLA_FLAG },
2160                 [NL80211_FREQUENCY_ATTR_RADAR]        = { .type = NLA_FLAG },
2161                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32  },
2162         };
2163
2164         ch_cur = *dbm_max; /* value int* is initialized with channel by caller */
2165         *dbm_max = -1;
2166
2167         nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
2168         {
2169                 nla_parse(bands, NL80211_BAND_ATTR_MAX, nla_data(band),
2170                           nla_len(band), NULL);
2171
2172                 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
2173                 {
2174                         nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
2175                                   nla_data(freq), nla_len(freq), freq_policy);
2176
2177                         ch_cmp = nl80211_freq2channel(nla_get_u32(
2178                                 freqs[NL80211_FREQUENCY_ATTR_FREQ]));
2179
2180                         if ((!ch_cur || (ch_cmp == ch_cur)) &&
2181                             freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER])
2182                         {
2183                                 *dbm_max = (int)(0.01 * nla_get_u32(
2184                                         freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]));
2185
2186                                 break;
2187                         }
2188                 }
2189         }
2190
2191         return NL_SKIP;
2192 }
2193
2194 static int nl80211_get_txpwrlist(const char *ifname, char *buf, int *len)
2195 {
2196         int err, ch_cur;
2197         int dbm_max = -1, dbm_cur, dbm_cnt;
2198         struct nl80211_msg_conveyor *req;
2199         struct iwinfo_txpwrlist_entry entry;
2200
2201         if (nl80211_get_channel(ifname, &ch_cur))
2202                 ch_cur = 0;
2203
2204         /* initialize the value pointer with channel for callback */
2205         dbm_max = ch_cur;
2206
2207         err = nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0,
2208                               nl80211_get_txpwrlist_cb, &dbm_max);
2209
2210         if (!err)
2211         {
2212                 for (dbm_cur = 0, dbm_cnt = 0;
2213                      dbm_cur < dbm_max;
2214                      dbm_cur++, dbm_cnt++)
2215                 {
2216                         entry.dbm = dbm_cur;
2217                         entry.mw  = iwinfo_dbm2mw(dbm_cur);
2218
2219                         memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
2220                 }
2221
2222                 entry.dbm = dbm_max;
2223                 entry.mw  = iwinfo_dbm2mw(dbm_max);
2224
2225                 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
2226                 dbm_cnt++;
2227
2228                 *len = dbm_cnt * sizeof(entry);
2229                 return 0;
2230         }
2231
2232         return -1;
2233 }
2234
2235 static void nl80211_get_scancrypto(char *spec, struct iwinfo_crypto_entry *c)
2236 {
2237         int wpa_version = 0;
2238         char *p, *q, *proto, *suites;
2239
2240         c->enabled = 0;
2241
2242         for (p = strtok_r(spec, "[]", &q); p; p = strtok_r(NULL, "[]", &q)) {
2243                 if (!strcmp(p, "WEP")) {
2244                         c->enabled      = 1;
2245                         c->auth_suites  = IWINFO_KMGMT_NONE;
2246                         c->auth_algs    = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
2247                         c->pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
2248                         break;
2249                 }
2250
2251                 proto = strtok(p, "-");
2252                 suites = strtok(NULL, "]");
2253
2254                 if (!proto || !suites)
2255                         continue;
2256
2257                 if (!strcmp(proto, "WPA2") || !strcmp(proto, "RSN"))
2258                         wpa_version = 2;
2259                 else if (!strcmp(proto, "WPA"))
2260                         wpa_version = 1;
2261                 else
2262                         continue;
2263
2264                 c->enabled = 1;
2265
2266                 parse_wpa_suites(suites, wpa_version, &c->wpa_version, &c->auth_suites);
2267                 parse_wpa_ciphers(suites, &c->pair_ciphers);
2268         }
2269 }
2270
2271
2272 struct nl80211_scanlist {
2273         struct iwinfo_scanlist_entry *e;
2274         int len;
2275 };
2276
2277
2278 static void nl80211_get_scanlist_ie(struct nlattr **bss,
2279                                     struct iwinfo_scanlist_entry *e)
2280 {
2281         int ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2282         unsigned char *ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2283         static unsigned char ms_oui[3] = { 0x00, 0x50, 0xf2 };
2284         int len;
2285
2286         while (ielen >= 2 && ielen >= ie[1])
2287         {
2288                 switch (ie[0])
2289                 {
2290                 case 0: /* SSID */
2291                 case 114: /* Mesh ID */
2292                         if (e->ssid[0] == 0) {
2293                                 len = min(ie[1], IWINFO_ESSID_MAX_SIZE);
2294                                 memcpy(e->ssid, ie + 2, len);
2295                                 e->ssid[len] = 0;
2296                         }
2297                         break;
2298
2299                 case 48: /* RSN */
2300                         iwinfo_parse_rsn(&e->crypto, ie + 2, ie[1],
2301                                          IWINFO_CIPHER_CCMP, IWINFO_KMGMT_8021x);
2302                         break;
2303
2304                 case 221: /* Vendor */
2305                         if (ie[1] >= 4 && !memcmp(ie + 2, ms_oui, 3) && ie[5] == 1)
2306                                 iwinfo_parse_rsn(&e->crypto, ie + 6, ie[1] - 4,
2307                                                  IWINFO_CIPHER_TKIP, IWINFO_KMGMT_PSK);
2308                         break;
2309                 }
2310
2311                 ielen -= ie[1] + 2;
2312                 ie += ie[1] + 2;
2313         }
2314 }
2315
2316 static int nl80211_get_scanlist_cb(struct nl_msg *msg, void *arg)
2317 {
2318         int8_t rssi;
2319         uint16_t caps;
2320
2321         struct nl80211_scanlist *sl = arg;
2322         struct nlattr **tb = nl80211_parse(msg);
2323         struct nlattr *bss[NL80211_BSS_MAX + 1];
2324
2325         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2326                 [NL80211_BSS_TSF]                  = { .type = NLA_U64 },
2327                 [NL80211_BSS_FREQUENCY]            = { .type = NLA_U32 },
2328                 [NL80211_BSS_BSSID]                = { 0 },
2329                 [NL80211_BSS_BEACON_INTERVAL]      = { .type = NLA_U16 },
2330                 [NL80211_BSS_CAPABILITY]           = { .type = NLA_U16 },
2331                 [NL80211_BSS_INFORMATION_ELEMENTS] = { 0 },
2332                 [NL80211_BSS_SIGNAL_MBM]           = { .type = NLA_U32 },
2333                 [NL80211_BSS_SIGNAL_UNSPEC]        = { .type = NLA_U8  },
2334                 [NL80211_BSS_STATUS]               = { .type = NLA_U32 },
2335                 [NL80211_BSS_SEEN_MS_AGO]          = { .type = NLA_U32 },
2336                 [NL80211_BSS_BEACON_IES]           = { 0 },
2337         };
2338
2339         if (!tb[NL80211_ATTR_BSS] ||
2340                 nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2341                                  bss_policy) ||
2342                 !bss[NL80211_BSS_BSSID])
2343         {
2344                 return NL_SKIP;
2345         }
2346
2347         if (bss[NL80211_BSS_CAPABILITY])
2348                 caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2349         else
2350                 caps = 0;
2351
2352         memset(sl->e, 0, sizeof(*sl->e));
2353         memcpy(sl->e->mac, nla_data(bss[NL80211_BSS_BSSID]), 6);
2354
2355         if (caps & (1<<1))
2356                 sl->e->mode = IWINFO_OPMODE_ADHOC;
2357         else if (caps & (1<<0))
2358                 sl->e->mode = IWINFO_OPMODE_MASTER;
2359         else
2360                 sl->e->mode = IWINFO_OPMODE_MESHPOINT;
2361
2362         if (caps & (1<<4))
2363                 sl->e->crypto.enabled = 1;
2364
2365         if (bss[NL80211_BSS_FREQUENCY])
2366                 sl->e->channel = nl80211_freq2channel(nla_get_u32(
2367                         bss[NL80211_BSS_FREQUENCY]));
2368
2369         if (bss[NL80211_BSS_INFORMATION_ELEMENTS])
2370                 nl80211_get_scanlist_ie(bss, sl->e);
2371
2372         if (bss[NL80211_BSS_SIGNAL_MBM])
2373         {
2374                 sl->e->signal =
2375                         (uint8_t)((int32_t)nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]) / 100);
2376
2377                 rssi = sl->e->signal - 0x100;
2378
2379                 if (rssi < -110)
2380                         rssi = -110;
2381                 else if (rssi > -40)
2382                         rssi = -40;
2383
2384                 sl->e->quality = (rssi + 110);
2385                 sl->e->quality_max = 70;
2386         }
2387
2388         if (sl->e->crypto.enabled && !sl->e->crypto.wpa_version)
2389         {
2390                 sl->e->crypto.auth_algs    = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
2391                 sl->e->crypto.pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
2392         }
2393
2394         sl->e++;
2395         sl->len++;
2396
2397         return NL_SKIP;
2398 }
2399
2400 static int nl80211_get_scanlist_nl(const char *ifname, char *buf, int *len)
2401 {
2402         struct nl80211_scanlist sl = { .e = (struct iwinfo_scanlist_entry *)buf };
2403
2404         if (nl80211_request(ifname, NL80211_CMD_TRIGGER_SCAN, 0, NULL, NULL))
2405                 goto out;
2406
2407         if (nl80211_wait("nl80211", "scan",
2408                          NL80211_CMD_NEW_SCAN_RESULTS, NL80211_CMD_SCAN_ABORTED))
2409                 goto out;
2410
2411         if (nl80211_request(ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP,
2412                             nl80211_get_scanlist_cb, &sl))
2413                 goto out;
2414
2415         *len = sl.len * sizeof(struct iwinfo_scanlist_entry);
2416         return 0;
2417
2418 out:
2419         *len = 0;
2420         return -1;
2421 }
2422
2423 static int wpasupp_ssid_decode(const char *in, char *out, int outlen)
2424 {
2425 #define hex(x) \
2426         (((x) >= 'a') ? ((x) - 'a' + 10) : \
2427                 (((x) >= 'A') ? ((x) - 'A' + 10) : ((x) - '0')))
2428
2429         int len = 0;
2430
2431         while (*in)
2432         {
2433                 if (len + 1 >= outlen)
2434                         break;
2435
2436                 switch (*in)
2437                 {
2438                 case '\\':
2439                         in++;
2440                         switch (*in)
2441                         {
2442                         case 'n':
2443                                 out[len++] = '\n'; in++;
2444                                 break;
2445
2446                         case 'r':
2447                                 out[len++] = '\r'; in++;
2448                                 break;
2449
2450                         case 't':
2451                                 out[len++] = '\t'; in++;
2452                                 break;
2453
2454                         case 'e':
2455                                 out[len++] = '\033'; in++;
2456                                 break;
2457
2458                         case 'x':
2459                                 if (isxdigit(*(in+1)) && isxdigit(*(in+2)))
2460                                         out[len++] = hex(*(in+1)) * 16 + hex(*(in+2));
2461                                 in += 3;
2462                                 break;
2463
2464                         default:
2465                                 out[len++] = *in++;
2466                                 break;
2467                         }
2468                         break;
2469
2470                 default:
2471                         out[len++] = *in++;
2472                         break;
2473                 }
2474         }
2475
2476         if (outlen > len)
2477                 out[len] = '\0';
2478
2479         return len;
2480 }
2481
2482 static int nl80211_get_scanlist_wpactl(const char *ifname, char *buf, int *len)
2483 {
2484         int sock, qmax, rssi, tries, count = -1, ready = 0;
2485         char *pos, *line, *bssid, *freq, *signal, *flags, *ssid, reply[4096];
2486         struct sockaddr_un local = { 0 };
2487         struct iwinfo_scanlist_entry *e = (struct iwinfo_scanlist_entry *)buf;
2488
2489         sock = nl80211_wpactl_connect(ifname, &local);
2490
2491         if (sock < 0)
2492                 return sock;
2493
2494         send(sock, "ATTACH", 6, 0);
2495         send(sock, "SCAN", 4, 0);
2496
2497         /*
2498          * wait for scan results:
2499          *   nl80211_wpactl_recv() will use a timeout of 256ms and we need to scan
2500          *   72 channels at most. We'll also receive two "OK" messages acknowledging
2501          *   the "ATTACH" and "SCAN" commands and the driver might need a bit extra
2502          *   time to process the results, so try 72 + 2 + 1 times.
2503          */
2504         for (tries = 0; tries < 75; tries++)
2505         {
2506                 if (nl80211_wpactl_recv(sock, reply, sizeof(reply)) <= 0)
2507                         continue;
2508
2509                 /* got an event notification */
2510                 if (reply[0] == '<')
2511                 {
2512                         /* scan results are ready */
2513                         if (strstr(reply, "CTRL-EVENT-SCAN-RESULTS"))
2514                         {
2515                                 /* send "SCAN_RESULTS" command */
2516                                 ready = (send(sock, "SCAN_RESULTS", 12, 0) == 12);
2517                                 break;
2518                         }
2519
2520                         /* is another unrelated event, retry */
2521                         tries--;
2522                 }
2523
2524                 /* scanning already in progress, keep awaiting results */
2525                 else if (!strcmp(reply, "FAIL-BUSY\n"))
2526                 {
2527                         tries--;
2528                 }
2529
2530                 /* another failure, abort */
2531                 else if (!strncmp(reply, "FAIL-", 5))
2532                 {
2533                         break;
2534                 }
2535         }
2536
2537         /* receive and parse scan results if the wait above didn't time out */
2538         while (ready && nl80211_wpactl_recv(sock, reply, sizeof(reply)) > 0)
2539         {
2540                 /* received an event notification, receive again */
2541                 if (reply[0] == '<')
2542                         continue;
2543
2544                 nl80211_get_quality_max(ifname, &qmax);
2545
2546                 for (line = strtok_r(reply, "\n", &pos);
2547                      line != NULL;
2548                      line = strtok_r(NULL, "\n", &pos))
2549                 {
2550                         /* skip header line */
2551                         if (count < 0)
2552                         {
2553                                 count++;
2554                                 continue;
2555                         }
2556
2557                         bssid  = strtok(line, "\t");
2558                         freq   = strtok(NULL, "\t");
2559                         signal = strtok(NULL, "\t");
2560                         flags  = strtok(NULL, "\t");
2561                         ssid   = strtok(NULL, "\n");
2562
2563                         if (!bssid || !freq || !signal || !flags)
2564                                 continue;
2565
2566                         /* BSSID */
2567                         e->mac[0] = strtol(&bssid[0],  NULL, 16);
2568                         e->mac[1] = strtol(&bssid[3],  NULL, 16);
2569                         e->mac[2] = strtol(&bssid[6],  NULL, 16);
2570                         e->mac[3] = strtol(&bssid[9],  NULL, 16);
2571                         e->mac[4] = strtol(&bssid[12], NULL, 16);
2572                         e->mac[5] = strtol(&bssid[15], NULL, 16);
2573
2574                         /* SSID */
2575                         if (ssid)
2576                                 wpasupp_ssid_decode(ssid, e->ssid, sizeof(e->ssid));
2577                         else
2578                                 e->ssid[0] = 0;
2579
2580                         /* Mode */
2581                         if (strstr(flags, "[MESH]"))
2582                                 e->mode = IWINFO_OPMODE_MESHPOINT;
2583                         else if (strstr(flags, "[IBSS]"))
2584                                 e->mode = IWINFO_OPMODE_ADHOC;
2585                         else
2586                                 e->mode = IWINFO_OPMODE_MASTER;
2587
2588                         /* Channel */
2589                         e->channel = nl80211_freq2channel(atoi(freq));
2590
2591                         /* Signal */
2592                         rssi = atoi(signal);
2593                         e->signal = rssi;
2594
2595                         /* Quality */
2596                         if (rssi < 0)
2597                         {
2598                                 /* The cfg80211 wext compat layer assumes a signal range
2599                                  * of -110 dBm to -40 dBm, the quality value is derived
2600                                  * by adding 110 to the signal level */
2601                                 if (rssi < -110)
2602                                         rssi = -110;
2603                                 else if (rssi > -40)
2604                                         rssi = -40;
2605
2606                                 e->quality = (rssi + 110);
2607                         }
2608                         else
2609                         {
2610                                 e->quality = rssi;
2611                         }
2612
2613                         /* Max. Quality */
2614                         e->quality_max = qmax;
2615
2616                         /* Crypto */
2617                         nl80211_get_scancrypto(flags, &e->crypto);
2618
2619                         count++;
2620                         e++;
2621                 }
2622
2623                 *len = count * sizeof(struct iwinfo_scanlist_entry);
2624                 break;
2625         }
2626
2627         close(sock);
2628         unlink(local.sun_path);
2629
2630         return (count >= 0) ? 0 : -1;
2631 }
2632
2633 static int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
2634 {
2635         char *res;
2636         int rv, mode;
2637
2638         *len = 0;
2639
2640         /* Got a radioX pseudo interface, find some interface on it or create one */
2641         if (!strncmp(ifname, "radio", 5))
2642         {
2643                 /* Reuse existing interface */
2644                 if ((res = nl80211_phy2ifname(ifname)) != NULL)
2645                 {
2646                         return nl80211_get_scanlist(res, buf, len);
2647                 }
2648
2649                 /* Need to spawn a temporary iface for scanning */
2650                 else if ((res = nl80211_ifadd(ifname)) != NULL)
2651                 {
2652                         rv = nl80211_get_scanlist(res, buf, len);
2653                         nl80211_ifdel(res);
2654                         return rv;
2655                 }
2656         }
2657
2658         /* WPA supplicant */
2659         if (!nl80211_get_scanlist_wpactl(ifname, buf, len))
2660         {
2661                 return 0;
2662         }
2663
2664         /* station / ad-hoc / monitor scan */
2665         else if (!nl80211_get_mode(ifname, &mode) &&
2666                  (mode == IWINFO_OPMODE_ADHOC ||
2667                   mode == IWINFO_OPMODE_MASTER ||
2668                   mode == IWINFO_OPMODE_CLIENT ||
2669                   mode == IWINFO_OPMODE_MONITOR) &&
2670                  iwinfo_ifup(ifname))
2671         {
2672                 return nl80211_get_scanlist_nl(ifname, buf, len);
2673         }
2674
2675         /* AP scan */
2676         else
2677         {
2678                 /* Got a temp interface, don't create yet another one */
2679                 if (!strncmp(ifname, "tmp.", 4))
2680                 {
2681                         if (!iwinfo_ifup(ifname))
2682                                 return -1;
2683
2684                         rv = nl80211_get_scanlist_nl(ifname, buf, len);
2685                         iwinfo_ifdown(ifname);
2686                         return rv;
2687                 }
2688
2689                 /* Spawn a new scan interface */
2690                 else
2691                 {
2692                         if (!(res = nl80211_ifadd(ifname)))
2693                                 return -1;
2694
2695                         iwinfo_ifmac(res);
2696
2697                         /* if we can take the new interface up, the driver supports an
2698                          * additional interface and there's no need to tear down the ap */
2699                         if (iwinfo_ifup(res))
2700                         {
2701                                 rv = nl80211_get_scanlist_nl(res, buf, len);
2702                                 iwinfo_ifdown(res);
2703                         }
2704
2705                         /* driver cannot create secondary interface, take down ap
2706                          * during scan */
2707                         else if (iwinfo_ifdown(ifname) && iwinfo_ifup(res))
2708                         {
2709                                 rv = nl80211_get_scanlist_nl(res, buf, len);
2710                                 iwinfo_ifdown(res);
2711                                 iwinfo_ifup(ifname);
2712                                 nl80211_hostapd_hup(ifname);
2713                         }
2714
2715                         nl80211_ifdel(res);
2716                         return rv;
2717                 }
2718         }
2719
2720         return -1;
2721 }
2722
2723 static int nl80211_get_freqlist_cb(struct nl_msg *msg, void *arg)
2724 {
2725         int bands_remain, freqs_remain;
2726
2727         struct nl80211_array_buf *arr = arg;
2728         struct iwinfo_freqlist_entry *e;
2729
2730         struct nlattr **attr = nl80211_parse(msg);
2731         struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
2732         struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
2733         struct nlattr *band, *freq;
2734
2735         e = arr->buf;
2736         e += arr->count;
2737
2738         if (attr[NL80211_ATTR_WIPHY_BANDS]) {
2739                 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
2740                 {
2741                         nla_parse(bands, NL80211_BAND_ATTR_MAX,
2742                                   nla_data(band), nla_len(band), NULL);
2743
2744                         if (bands[NL80211_BAND_ATTR_FREQS]) {
2745                                 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
2746                                 {
2747                                         nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
2748                                                   nla_data(freq), nla_len(freq), NULL);
2749
2750                                         if (!freqs[NL80211_FREQUENCY_ATTR_FREQ] ||
2751                                             freqs[NL80211_FREQUENCY_ATTR_DISABLED])
2752                                                 continue;
2753
2754                                         e->mhz = nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]);
2755                                         e->channel = nl80211_freq2channel(e->mhz);
2756
2757                                         e->restricted = (
2758                                                 freqs[NL80211_FREQUENCY_ATTR_NO_IR] &&
2759                                                 !freqs[NL80211_FREQUENCY_ATTR_RADAR]
2760                                         ) ? 1 : 0;
2761
2762                                         if (freqs[NL80211_FREQUENCY_ATTR_NO_HT40_MINUS])
2763                                                 e->flags |= IWINFO_FREQ_NO_HT40MINUS;
2764                                         if (freqs[NL80211_FREQUENCY_ATTR_NO_HT40_PLUS])
2765                                                 e->flags |= IWINFO_FREQ_NO_HT40PLUS;
2766                                         if (freqs[NL80211_FREQUENCY_ATTR_NO_80MHZ])
2767                                                 e->flags |= IWINFO_FREQ_NO_80MHZ;
2768                                         if (freqs[NL80211_FREQUENCY_ATTR_NO_160MHZ])
2769                                                 e->flags |= IWINFO_FREQ_NO_160MHZ;
2770                                         if (freqs[NL80211_FREQUENCY_ATTR_NO_20MHZ])
2771                                                 e->flags |= IWINFO_FREQ_NO_20MHZ;
2772                                         if (freqs[NL80211_FREQUENCY_ATTR_NO_10MHZ])
2773                                                 e->flags |= IWINFO_FREQ_NO_10MHZ;
2774
2775                                         e++;
2776                                         arr->count++;
2777                                 }
2778                         }
2779                 }
2780         }
2781
2782         return NL_SKIP;
2783 }
2784
2785 static int nl80211_get_freqlist(const char *ifname, char *buf, int *len)
2786 {
2787         struct nl80211_msg_conveyor *cv;
2788         struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
2789         uint32_t features = nl80211_get_protocol_features(ifname);
2790         int flags;
2791
2792         flags = features & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP ? NLM_F_DUMP : 0;
2793         cv = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, flags);
2794         if (!cv)
2795                 goto out;
2796
2797         NLA_PUT_FLAG(cv->msg, NL80211_ATTR_SPLIT_WIPHY_DUMP);
2798         if (nl80211_send(cv, nl80211_get_freqlist_cb, &arr))
2799                 goto out;
2800
2801         *len = arr.count * sizeof(struct iwinfo_freqlist_entry);
2802         return 0;
2803
2804 nla_put_failure:
2805         nl80211_free(cv);
2806 out:
2807         *len = 0;
2808         return -1;
2809 }
2810
2811 static int nl80211_get_country_cb(struct nl_msg *msg, void *arg)
2812 {
2813         char *buf = arg;
2814         struct nlattr **attr = nl80211_parse(msg);
2815
2816         if (attr[NL80211_ATTR_REG_ALPHA2])
2817                 memcpy(buf, nla_data(attr[NL80211_ATTR_REG_ALPHA2]), 2);
2818         else
2819                 buf[0] = 0;
2820
2821         return NL_SKIP;
2822 }
2823
2824 static int nl80211_get_country(const char *ifname, char *buf)
2825 {
2826         if (nl80211_request(ifname, NL80211_CMD_GET_REG, 0,
2827                             nl80211_get_country_cb, buf))
2828                 return -1;
2829
2830         return 0;
2831 }
2832
2833 static int nl80211_get_countrylist(const char *ifname, char *buf, int *len)
2834 {
2835         int count;
2836         struct iwinfo_country_entry *e = (struct iwinfo_country_entry *)buf;
2837         const struct iwinfo_iso3166_label *l;
2838
2839         for (l = IWINFO_ISO3166_NAMES, count = 0; l->iso3166; l++, e++, count++)
2840         {
2841                 e->iso3166 = l->iso3166;
2842                 e->ccode[0] = (l->iso3166 / 256);
2843                 e->ccode[1] = (l->iso3166 % 256);
2844                 e->ccode[2] = 0;
2845         }
2846
2847         *len = (count * sizeof(struct iwinfo_country_entry));
2848         return 0;
2849 }
2850
2851
2852 struct nl80211_modes
2853 {
2854         bool ok;
2855         uint32_t hw;
2856         uint32_t ht;
2857 };
2858
2859 static int nl80211_get_modelist_cb(struct nl_msg *msg, void *arg)
2860 {
2861         struct nl80211_modes *m = arg;
2862         int bands_remain, freqs_remain;
2863         uint16_t caps = 0;
2864         uint32_t vht_caps = 0;
2865         struct nlattr **attr = nl80211_parse(msg);
2866         struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
2867         struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
2868         struct nlattr *band, *freq;
2869
2870         if (attr[NL80211_ATTR_WIPHY_BANDS])
2871         {
2872                 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
2873                 {
2874                         nla_parse(bands, NL80211_BAND_ATTR_MAX,
2875                                   nla_data(band), nla_len(band), NULL);
2876
2877                         if (bands[NL80211_BAND_ATTR_HT_CAPA])
2878                                 caps = nla_get_u16(bands[NL80211_BAND_ATTR_HT_CAPA]);
2879
2880                         /* Treat any nonzero capability as 11n */
2881                         if (caps > 0)
2882                         {
2883                                 m->hw |= IWINFO_80211_N;
2884                                 m->ht |= IWINFO_HTMODE_HT20;
2885
2886                                 if (caps & (1 << 1))
2887                                         m->ht |= IWINFO_HTMODE_HT40;
2888                         }
2889
2890                         nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS],
2891                                             freqs_remain)
2892                         {
2893                                 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
2894                                           nla_data(freq), nla_len(freq), NULL);
2895
2896                                 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ])
2897                                         continue;
2898
2899                                 if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) < 2485)
2900                                 {
2901                                         m->hw |= IWINFO_80211_B;
2902                                         m->hw |= IWINFO_80211_G;
2903                                 }
2904                                 else if (bands[NL80211_BAND_ATTR_VHT_CAPA])
2905                                 {
2906                                         vht_caps = nla_get_u32(bands[NL80211_BAND_ATTR_VHT_CAPA]);
2907
2908                                         /* Treat any nonzero capability as 11ac */
2909                                         if (vht_caps > 0)
2910                                         {
2911                                                 m->hw |= IWINFO_80211_AC;
2912                                                 m->ht |= IWINFO_HTMODE_VHT20 | IWINFO_HTMODE_VHT40 | IWINFO_HTMODE_VHT80;
2913
2914                                                 switch ((vht_caps >> 2) & 3)
2915                                                 {
2916                                                 case 2:
2917                                                         m->ht |= IWINFO_HTMODE_VHT80_80;
2918                                                         /* fall through */
2919
2920                                                 case 1:
2921                                                         m->ht |= IWINFO_HTMODE_VHT160;
2922                                                 }
2923                                         }
2924                                 }
2925                                 else if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) >= 56160)
2926                                 {
2927                                         m->hw |= IWINFO_80211_AD;
2928                                 }
2929                                 else if (!(m->hw & IWINFO_80211_AC))
2930                                 {
2931                                         m->hw |= IWINFO_80211_A;
2932                                 }
2933                         }
2934                 }
2935
2936                 m->ok = 1;
2937         }
2938
2939         return NL_SKIP;
2940 }
2941
2942 static int nl80211_get_hwmodelist(const char *ifname, int *buf)
2943 {
2944         struct nl80211_modes m = { 0 };
2945
2946         if (nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0,
2947                             nl80211_get_modelist_cb, &m))
2948                 goto out;
2949
2950         if (!m.ok)
2951                 goto out;
2952
2953         *buf = m.hw;
2954         return 0;
2955
2956 out:
2957         *buf = 0;
2958         return -1;
2959 }
2960
2961 struct chan_info {
2962         int width;
2963         int mode;
2964 };
2965
2966 static int nl80211_get_htmode_cb(struct nl_msg *msg, void *arg)
2967 {
2968         struct nlattr **tb = nl80211_parse(msg);
2969         struct nlattr *cur;
2970         struct chan_info *chn = arg;
2971
2972         if ((cur = tb[NL80211_ATTR_CHANNEL_WIDTH]))
2973                 chn->width = nla_get_u32(cur);
2974
2975         if ((cur = tb[NL80211_ATTR_BSS_HT_OPMODE]))
2976                 chn->mode = nla_get_u32(cur);
2977
2978         return NL_SKIP;
2979 }
2980
2981 static int nl80211_get_htmode(const char *ifname, int *buf)
2982 {
2983         struct chan_info chn = { .width = 0, .mode = 0 };
2984         char *res;
2985         int err;
2986
2987         res = nl80211_phy2ifname(ifname);
2988         *buf = 0;
2989
2990         err =  nl80211_request(res ? res : ifname,
2991                                 NL80211_CMD_GET_INTERFACE, 0,
2992                                 nl80211_get_htmode_cb, &chn);
2993         if (err)
2994                 return -1;
2995
2996         switch (chn.width) {
2997         case NL80211_CHAN_WIDTH_20:
2998                 if (chn.mode == -1)
2999                         *buf = IWINFO_HTMODE_VHT20;
3000                 else
3001                         *buf = IWINFO_HTMODE_HT20;
3002                 break;
3003         case NL80211_CHAN_WIDTH_40:
3004                 if (chn.mode == -1)
3005                         *buf = IWINFO_HTMODE_VHT40;
3006                 else
3007                         *buf = IWINFO_HTMODE_HT40;
3008                 break;
3009         case NL80211_CHAN_WIDTH_80:
3010                 *buf = IWINFO_HTMODE_VHT80;
3011                 break;
3012         case NL80211_CHAN_WIDTH_80P80:
3013                 *buf = IWINFO_HTMODE_VHT80_80;
3014                 break;
3015         case NL80211_CHAN_WIDTH_160:
3016                 *buf = IWINFO_HTMODE_VHT160;
3017                 break;
3018         case NL80211_CHAN_WIDTH_5:
3019         case NL80211_CHAN_WIDTH_10:
3020         case NL80211_CHAN_WIDTH_20_NOHT:
3021                 *buf = IWINFO_HTMODE_NOHT;
3022                 break;
3023         default:
3024                 return -1;
3025         }
3026
3027         return 0;
3028 }
3029
3030 static int nl80211_get_htmodelist(const char *ifname, int *buf)
3031 {
3032         struct nl80211_modes m = { 0 };
3033
3034         if (nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0,
3035                             nl80211_get_modelist_cb, &m))
3036                 goto out;
3037
3038         if (!m.ok)
3039                 goto out;
3040
3041         *buf = m.ht;
3042         return 0;
3043
3044 out:
3045         *buf = 0;
3046         return -1;
3047 }
3048
3049
3050 static int nl80211_get_ifcomb_cb(struct nl_msg *msg, void *arg)
3051 {
3052         struct nlattr **attr = nl80211_parse(msg);
3053         struct nlattr *comb;
3054         int *ret = arg;
3055         int comb_rem, limit_rem, mode_rem;
3056
3057         *ret = 0;
3058         if (!attr[NL80211_ATTR_INTERFACE_COMBINATIONS])
3059                 return NL_SKIP;
3060
3061         nla_for_each_nested(comb, attr[NL80211_ATTR_INTERFACE_COMBINATIONS], comb_rem)
3062         {
3063                 static struct nla_policy iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
3064                         [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
3065                         [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
3066                 };
3067                 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB+1];
3068                 static struct nla_policy iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
3069                         [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
3070                         [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
3071                 };
3072                 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT+1];
3073                 struct nlattr *limit;
3074
3075                 nla_parse_nested(tb_comb, NUM_NL80211_IFACE_COMB, comb, iface_combination_policy);
3076
3077                 if (!tb_comb[NL80211_IFACE_COMB_LIMITS])
3078                         continue;
3079
3080                 nla_for_each_nested(limit, tb_comb[NL80211_IFACE_COMB_LIMITS], limit_rem)
3081                 {
3082                         struct nlattr *mode;
3083
3084                         nla_parse_nested(tb_limit, NUM_NL80211_IFACE_LIMIT, limit, iface_limit_policy);
3085
3086                         if (!tb_limit[NL80211_IFACE_LIMIT_TYPES] ||
3087                             !tb_limit[NL80211_IFACE_LIMIT_MAX])
3088                                 continue;
3089
3090                         if (nla_get_u32(tb_limit[NL80211_IFACE_LIMIT_MAX]) < 2)
3091                                 continue;
3092
3093                         nla_for_each_nested(mode, tb_limit[NL80211_IFACE_LIMIT_TYPES], mode_rem) {
3094                                 if (nla_type(mode) == NL80211_IFTYPE_AP)
3095                                         *ret = 1;
3096                         }
3097                 }
3098         }
3099
3100         return NL_SKIP;
3101 }
3102
3103 static int nl80211_get_mbssid_support(const char *ifname, int *buf)
3104 {
3105         if (nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0,
3106                             nl80211_get_ifcomb_cb, buf))
3107                 return -1;
3108
3109         return 0;
3110 }
3111
3112 static int nl80211_get_hardware_id(const char *ifname, char *buf)
3113 {
3114         struct iwinfo_hardware_id *id = (struct iwinfo_hardware_id *)buf;
3115         char *phy, num[8], path[PATH_MAX];
3116         int i;
3117
3118         struct { const char *path; uint16_t *dest; } lookup[] = {
3119                 { "vendor", &id->vendor_id },
3120                 { "device", &id->device_id },
3121                 { "subsystem_vendor", &id->subsystem_vendor_id },
3122                 { "subsystem_device", &id->subsystem_device_id }
3123         };
3124
3125         memset(id, 0, sizeof(*id));
3126
3127         /* Try to determine the phy name from the given interface */
3128         phy = nl80211_ifname2phy(ifname);
3129
3130         for (i = 0; i < ARRAY_SIZE(lookup); i++)
3131         {
3132                 snprintf(path, sizeof(path), "/sys/class/%s/%s/device/%s",
3133                          phy ? "ieee80211" : "net",
3134                          phy ? phy : ifname, lookup[i].path);
3135
3136                 if (nl80211_readstr(path, num, sizeof(num)) > 0)
3137                         *lookup[i].dest = strtoul(num, NULL, 16);
3138         }
3139
3140         /* Failed to obtain hardware IDs, search board config */
3141         if (id->vendor_id == 0 || id->device_id == 0)
3142                 return iwinfo_hardware_id_from_mtd(id);
3143
3144         return 0;
3145 }
3146
3147 static const struct iwinfo_hardware_entry *
3148 nl80211_get_hardware_entry(const char *ifname)
3149 {
3150         struct iwinfo_hardware_id id;
3151
3152         if (nl80211_get_hardware_id(ifname, (char *)&id))
3153                 return NULL;
3154
3155         return iwinfo_hardware(&id);
3156 }
3157
3158 static int nl80211_get_hardware_name(const char *ifname, char *buf)
3159 {
3160         const struct iwinfo_hardware_entry *hw;
3161
3162         if (!(hw = nl80211_get_hardware_entry(ifname)))
3163                 sprintf(buf, "Generic MAC80211");
3164         else
3165                 sprintf(buf, "%s %s", hw->vendor_name, hw->device_name);
3166
3167         return 0;
3168 }
3169
3170 static int nl80211_get_txpower_offset(const char *ifname, int *buf)
3171 {
3172         const struct iwinfo_hardware_entry *hw;
3173
3174         if (!(hw = nl80211_get_hardware_entry(ifname)))
3175                 return -1;
3176
3177         *buf = hw->txpower_offset;
3178         return 0;
3179 }
3180
3181 static int nl80211_get_frequency_offset(const char *ifname, int *buf)
3182 {
3183         const struct iwinfo_hardware_entry *hw;
3184
3185         if (!(hw = nl80211_get_hardware_entry(ifname)))
3186                 return -1;
3187
3188         *buf = hw->frequency_offset;
3189         return 0;
3190 }
3191
3192 static int nl80211_lookup_phyname(const char *section, char *buf)
3193 {
3194         int idx;
3195
3196         if ((idx = nl80211_phy_idx_from_uci(section)) < 0)
3197                 return -1;
3198
3199         sprintf(buf, "phy%d", idx);
3200         return 0;
3201 }
3202
3203 const struct iwinfo_ops nl80211_ops = {
3204         .name             = "nl80211",
3205         .probe            = nl80211_probe,
3206         .channel          = nl80211_get_channel,
3207         .frequency        = nl80211_get_frequency,
3208         .frequency_offset = nl80211_get_frequency_offset,
3209         .txpower          = nl80211_get_txpower,
3210         .txpower_offset   = nl80211_get_txpower_offset,
3211         .bitrate          = nl80211_get_bitrate,
3212         .signal           = nl80211_get_signal,
3213         .noise            = nl80211_get_noise,
3214         .quality          = nl80211_get_quality,
3215         .quality_max      = nl80211_get_quality_max,
3216         .mbssid_support   = nl80211_get_mbssid_support,
3217         .hwmodelist       = nl80211_get_hwmodelist,
3218         .htmodelist       = nl80211_get_htmodelist,
3219         .htmode           = nl80211_get_htmode,
3220         .mode             = nl80211_get_mode,
3221         .ssid             = nl80211_get_ssid,
3222         .bssid            = nl80211_get_bssid,
3223         .country          = nl80211_get_country,
3224         .hardware_id      = nl80211_get_hardware_id,
3225         .hardware_name    = nl80211_get_hardware_name,
3226         .encryption       = nl80211_get_encryption,
3227         .phyname          = nl80211_get_phyname,
3228         .assoclist        = nl80211_get_assoclist,
3229         .txpwrlist        = nl80211_get_txpwrlist,
3230         .scanlist         = nl80211_get_scanlist,
3231         .freqlist         = nl80211_get_freqlist,
3232         .countrylist      = nl80211_get_countrylist,
3233         .survey           = nl80211_get_survey,
3234         .lookup_phy       = nl80211_lookup_phyname,
3235         .close            = nl80211_close
3236 };