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iwinfo: export center_chan info for local wifi
[project/iwinfo.git] / 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_center_freq1_cb(struct nl_msg *msg, void *arg)
1266 {
1267 int *freq = arg;
1268 struct nlattr **tb = nl80211_parse(msg);
1269
1270 if (tb[NL80211_ATTR_CENTER_FREQ1])
1271 *freq = nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
1272
1273 return NL_SKIP;
1274 }
1275
1276 static int nl80211_get_center_freq1(const char *ifname, int *buf)
1277 {
1278 char *res;
1279
1280 /* try to find frequency from interface info */
1281 res = nl80211_phy2ifname(ifname);
1282 *buf = 0;
1283
1284 nl80211_request(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0,
1285 nl80211_get_center_freq1_cb, buf);
1286
1287 return (*buf == 0) ? -1 : 0;
1288 }
1289
1290 static int nl80211_get_center_freq2_cb(struct nl_msg *msg, void *arg)
1291 {
1292 int *freq = arg;
1293 struct nlattr **tb = nl80211_parse(msg);
1294
1295 if (tb[NL80211_ATTR_CENTER_FREQ2])
1296 *freq = nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
1297
1298 return NL_SKIP;
1299 }
1300
1301 static int nl80211_get_center_freq2(const char *ifname, int *buf)
1302 {
1303 char *res;
1304
1305 /* try to find frequency from interface info */
1306 res = nl80211_phy2ifname(ifname);
1307 *buf = 0;
1308
1309 nl80211_request(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0,
1310 nl80211_get_center_freq2_cb, buf);
1311
1312 return (*buf == 0) ? -1 : 0;
1313 }
1314
1315 static int nl80211_get_channel(const char *ifname, int *buf)
1316 {
1317 if (!nl80211_get_frequency(ifname, buf))
1318 {
1319 *buf = nl80211_freq2channel(*buf);
1320 return 0;
1321 }
1322
1323 return -1;
1324 }
1325
1326 static int nl80211_get_center_chan1(const char *ifname, int *buf)
1327 {
1328 if (!nl80211_get_center_freq1(ifname, buf))
1329 {
1330 *buf = nl80211_freq2channel(*buf);
1331 return 0;
1332 }
1333
1334 return -1;
1335 }
1336
1337 static int nl80211_get_center_chan2(const char *ifname, int *buf)
1338 {
1339 if (!nl80211_get_center_freq2(ifname, buf))
1340 {
1341 *buf = nl80211_freq2channel(*buf);
1342 return 0;
1343 }
1344
1345 return -1;
1346 }
1347
1348 static int nl80211_get_txpower_cb(struct nl_msg *msg, void *arg)
1349 {
1350 int *buf = arg;
1351 struct nlattr **tb = nl80211_parse(msg);
1352
1353 if (tb[NL80211_ATTR_WIPHY_TX_POWER_LEVEL])
1354 *buf = iwinfo_mbm2dbm(nla_get_u32(tb[NL80211_ATTR_WIPHY_TX_POWER_LEVEL]));
1355
1356 return NL_SKIP;
1357 }
1358
1359 static int nl80211_get_txpower(const char *ifname, int *buf)
1360 {
1361 char *res;
1362
1363 res = nl80211_phy2ifname(ifname);
1364 *buf = 0;
1365
1366 if (nl80211_request(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0,
1367 nl80211_get_txpower_cb, buf))
1368 return -1;
1369
1370 return 0;
1371 }
1372
1373
1374 static int nl80211_fill_signal_cb(struct nl_msg *msg, void *arg)
1375 {
1376 int8_t dbm;
1377 int16_t mbit;
1378 struct nl80211_rssi_rate *rr = arg;
1379 struct nlattr **attr = nl80211_parse(msg);
1380 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1381 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1382
1383 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
1384 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
1385 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
1386 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
1387 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
1388 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
1389 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1390 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
1391 [NL80211_STA_INFO_LLID] = { .type = NLA_U16 },
1392 [NL80211_STA_INFO_PLID] = { .type = NLA_U16 },
1393 [NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 },
1394 };
1395
1396 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1397 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1398 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1399 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1400 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1401 };
1402
1403 if (attr[NL80211_ATTR_STA_INFO])
1404 {
1405 if (!nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1406 attr[NL80211_ATTR_STA_INFO], stats_policy))
1407 {
1408 if (sinfo[NL80211_STA_INFO_SIGNAL])
1409 {
1410 dbm = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1411 rr->rssi = (rr->rssi * rr->rssi_samples + dbm) / (rr->rssi_samples + 1);
1412 rr->rssi_samples++;
1413 }
1414
1415 if (sinfo[NL80211_STA_INFO_TX_BITRATE])
1416 {
1417 if (!nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1418 sinfo[NL80211_STA_INFO_TX_BITRATE],
1419 rate_policy))
1420 {
1421 if (rinfo[NL80211_RATE_INFO_BITRATE])
1422 {
1423 mbit = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]);
1424 rr->rate = (rr->rate * rr->rate_samples + mbit) / (rr->rate_samples + 1);
1425 rr->rate_samples++;
1426 }
1427 }
1428 }
1429 }
1430 }
1431
1432 return NL_SKIP;
1433 }
1434
1435 static void nl80211_fill_signal(const char *ifname, struct nl80211_rssi_rate *r)
1436 {
1437 DIR *d;
1438 struct dirent *de;
1439
1440 memset(r, 0, sizeof(*r));
1441
1442 if ((d = opendir("/sys/class/net")) != NULL)
1443 {
1444 while ((de = readdir(d)) != NULL)
1445 {
1446 if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
1447 (!de->d_name[strlen(ifname)] ||
1448 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
1449 {
1450 nl80211_request(de->d_name, NL80211_CMD_GET_STATION,
1451 NLM_F_DUMP, nl80211_fill_signal_cb, r);
1452 }
1453 }
1454
1455 closedir(d);
1456 }
1457 }
1458
1459 static int nl80211_get_bitrate(const char *ifname, int *buf)
1460 {
1461 struct nl80211_rssi_rate rr;
1462
1463 nl80211_fill_signal(ifname, &rr);
1464
1465 if (rr.rate_samples)
1466 {
1467 *buf = (rr.rate * 100);
1468 return 0;
1469 }
1470
1471 return -1;
1472 }
1473
1474 static int nl80211_get_signal(const char *ifname, int *buf)
1475 {
1476 struct nl80211_rssi_rate rr;
1477
1478 nl80211_fill_signal(ifname, &rr);
1479
1480 if (rr.rssi_samples)
1481 {
1482 *buf = rr.rssi;
1483 return 0;
1484 }
1485
1486 return -1;
1487 }
1488
1489 static int nl80211_get_noise_cb(struct nl_msg *msg, void *arg)
1490 {
1491 int8_t *noise = arg;
1492 struct nlattr **tb = nl80211_parse(msg);
1493 struct nlattr *si[NL80211_SURVEY_INFO_MAX + 1];
1494
1495 static struct nla_policy sp[NL80211_SURVEY_INFO_MAX + 1] = {
1496 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1497 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1498 };
1499
1500 if (!tb[NL80211_ATTR_SURVEY_INFO])
1501 return NL_SKIP;
1502
1503 if (nla_parse_nested(si, NL80211_SURVEY_INFO_MAX,
1504 tb[NL80211_ATTR_SURVEY_INFO], sp))
1505 return NL_SKIP;
1506
1507 if (!si[NL80211_SURVEY_INFO_NOISE])
1508 return NL_SKIP;
1509
1510 if (!*noise || si[NL80211_SURVEY_INFO_IN_USE])
1511 *noise = (int8_t)nla_get_u8(si[NL80211_SURVEY_INFO_NOISE]);
1512
1513 return NL_SKIP;
1514 }
1515
1516
1517 static int nl80211_get_noise(const char *ifname, int *buf)
1518 {
1519 int8_t noise = 0;
1520
1521 if (nl80211_request(ifname, NL80211_CMD_GET_SURVEY, NLM_F_DUMP,
1522 nl80211_get_noise_cb, &noise))
1523 goto out;
1524
1525 *buf = noise;
1526 return 0;
1527
1528 out:
1529 *buf = 0;
1530 return -1;
1531 }
1532
1533 static int nl80211_get_quality(const char *ifname, int *buf)
1534 {
1535 int signal;
1536
1537 if (!nl80211_get_signal(ifname, &signal))
1538 {
1539 /* A positive signal level is usually just a quality
1540 * value, pass through as-is */
1541 if (signal >= 0)
1542 {
1543 *buf = signal;
1544 }
1545
1546 /* The cfg80211 wext compat layer assumes a signal range
1547 * of -110 dBm to -40 dBm, the quality value is derived
1548 * by adding 110 to the signal level */
1549 else
1550 {
1551 if (signal < -110)
1552 signal = -110;
1553 else if (signal > -40)
1554 signal = -40;
1555
1556 *buf = (signal + 110);
1557 }
1558
1559 return 0;
1560 }
1561
1562 return -1;
1563 }
1564
1565 static int nl80211_get_quality_max(const char *ifname, int *buf)
1566 {
1567 /* The cfg80211 wext compat layer assumes a maximum
1568 * quality of 70 */
1569 *buf = 70;
1570
1571 return 0;
1572 }
1573
1574 static int nl80211_check_wepkey(const char *key)
1575 {
1576 if (key && *key)
1577 {
1578 switch (strlen(key))
1579 {
1580 case 5:
1581 case 10:
1582 return IWINFO_CIPHER_WEP40;
1583
1584 case 13:
1585 case 26:
1586 return IWINFO_CIPHER_WEP104;
1587 }
1588 }
1589
1590 return 0;
1591 }
1592
1593 static struct {
1594 const char *match;
1595 int version;
1596 int suite;
1597 } wpa_key_mgmt_strings[] = {
1598 { "IEEE 802.1X/EAP", 0, IWINFO_KMGMT_8021x },
1599 { "EAP-SUITE-B-192", 4, IWINFO_KMGMT_8021x },
1600 { "EAP-SUITE-B", 4, IWINFO_KMGMT_8021x },
1601 { "EAP-SHA256", 0, IWINFO_KMGMT_8021x },
1602 { "PSK-SHA256", 0, IWINFO_KMGMT_PSK },
1603 { "NONE", 0, IWINFO_KMGMT_NONE },
1604 { "None", 0, IWINFO_KMGMT_NONE },
1605 { "PSK", 0, IWINFO_KMGMT_PSK },
1606 { "EAP", 0, IWINFO_KMGMT_8021x },
1607 { "SAE", 4, IWINFO_KMGMT_SAE },
1608 { "OWE", 4, IWINFO_KMGMT_OWE }
1609 };
1610
1611 static void parse_wpa_suites(const char *str, int defversion,
1612 uint8_t *versions, uint8_t *suites)
1613 {
1614 size_t l;
1615 int i, version;
1616 const char *p, *q, *m, *sep = " \t\n,-+/";
1617
1618 for (p = str; *p; )
1619 {
1620 q = p;
1621
1622 for (i = 0; i < ARRAY_SIZE(wpa_key_mgmt_strings); i++)
1623 {
1624 m = wpa_key_mgmt_strings[i].match;
1625 l = strlen(m);
1626
1627 if (!strncmp(q, m, l) && (!q[l] || strchr(sep, q[l])))
1628 {
1629 if (wpa_key_mgmt_strings[i].version != 0)
1630 version = wpa_key_mgmt_strings[i].version;
1631 else
1632 version = defversion;
1633
1634 *versions |= version;
1635 *suites |= wpa_key_mgmt_strings[i].suite;
1636
1637 q += l;
1638 break;
1639 }
1640 }
1641
1642 if (q == p)
1643 q += strcspn(q, sep);
1644
1645 p = q + strspn(q, sep);
1646 }
1647 }
1648
1649 static struct {
1650 const char *match;
1651 int cipher;
1652 } wpa_cipher_strings[] = {
1653 { "WEP-104", IWINFO_CIPHER_WEP104 },
1654 { "WEP-40", IWINFO_CIPHER_WEP40 },
1655 { "NONE", IWINFO_CIPHER_NONE },
1656 { "TKIP", IWINFO_CIPHER_TKIP },
1657 { "CCMP", IWINFO_CIPHER_CCMP }
1658 };
1659
1660 static void parse_wpa_ciphers(const char *str, uint8_t *ciphers)
1661 {
1662 int i;
1663 size_t l;
1664 const char *m, *p, *q, *sep = " \t\n,-+/";
1665
1666 for (p = str; *p; )
1667 {
1668 q = p;
1669
1670 for (i = 0; i < ARRAY_SIZE(wpa_cipher_strings); i++)
1671 {
1672 m = wpa_cipher_strings[i].match;
1673 l = strlen(m);
1674
1675 if (!strncmp(q, m, l) && (!q[l] || strchr(sep, q[l])))
1676 {
1677 *ciphers |= wpa_cipher_strings[i].cipher;
1678
1679 q += l;
1680 break;
1681 }
1682 }
1683
1684 if (q == p)
1685 q += strcspn(q, sep);
1686
1687 p = q + strspn(q, sep);
1688 }
1689 }
1690
1691 static int nl80211_get_encryption(const char *ifname, char *buf)
1692 {
1693 char *p;
1694 int opmode;
1695 uint8_t wpa_version = 0;
1696 char wpa[2], wpa_key_mgmt[64], wpa_pairwise[16], wpa_groupwise[16];
1697 char auth_algs[2], wep_key0[27], wep_key1[27], wep_key2[27], wep_key3[27];
1698 char mode[16];
1699
1700 struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf;
1701
1702 /* WPA supplicant */
1703 if (nl80211_wpactl_query(ifname,
1704 "pairwise_cipher", wpa_pairwise, sizeof(wpa_pairwise),
1705 "group_cipher", wpa_groupwise, sizeof(wpa_groupwise),
1706 "key_mgmt", wpa_key_mgmt, sizeof(wpa_key_mgmt),
1707 "mode", mode, sizeof(mode)))
1708 {
1709 /* WEP or Open */
1710 if (!strcmp(wpa_key_mgmt, "NONE"))
1711 {
1712 parse_wpa_ciphers(wpa_pairwise, &c->pair_ciphers);
1713 parse_wpa_ciphers(wpa_groupwise, &c->group_ciphers);
1714
1715 if (c->pair_ciphers != 0 && c->pair_ciphers != IWINFO_CIPHER_NONE) {
1716 c->enabled = 1;
1717 c->auth_suites = IWINFO_KMGMT_NONE;
1718 c->auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
1719 }
1720 else {
1721 c->pair_ciphers = 0;
1722 c->group_ciphers = 0;
1723 }
1724 }
1725
1726 /* MESH with SAE */
1727 else if (!strcmp(mode, "mesh") && !strcmp(wpa_key_mgmt, "UNKNOWN"))
1728 {
1729 c->enabled = 1;
1730 c->wpa_version = 4;
1731 c->auth_suites = IWINFO_KMGMT_SAE;
1732 c->pair_ciphers = IWINFO_CIPHER_CCMP;
1733 c->group_ciphers = IWINFO_CIPHER_CCMP;
1734 }
1735
1736 /* WPA */
1737 else
1738 {
1739 parse_wpa_ciphers(wpa_pairwise, &c->pair_ciphers);
1740 parse_wpa_ciphers(wpa_groupwise, &c->group_ciphers);
1741
1742 p = wpa_key_mgmt;
1743
1744 if (!strncmp(p, "WPA2-", 5) || !strncmp(p, "WPA2/", 5))
1745 {
1746 p += 5;
1747 wpa_version = 2;
1748 }
1749 else if (!strncmp(p, "WPA-", 4))
1750 {
1751 p += 4;
1752 wpa_version = 1;
1753 }
1754
1755 parse_wpa_suites(p, wpa_version, &c->wpa_version, &c->auth_suites);
1756
1757 c->enabled = !!(c->wpa_version && c->auth_suites);
1758 }
1759
1760 return 0;
1761 }
1762
1763 /* Hostapd */
1764 else if (nl80211_hostapd_query(ifname,
1765 "wpa", wpa, sizeof(wpa),
1766 "wpa_key_mgmt", wpa_key_mgmt, sizeof(wpa_key_mgmt),
1767 "wpa_pairwise", wpa_pairwise, sizeof(wpa_pairwise),
1768 "auth_algs", auth_algs, sizeof(auth_algs),
1769 "wep_key0", wep_key0, sizeof(wep_key0),
1770 "wep_key1", wep_key1, sizeof(wep_key1),
1771 "wep_key2", wep_key2, sizeof(wep_key2),
1772 "wep_key3", wep_key3, sizeof(wep_key3)))
1773 {
1774 c->wpa_version = 0;
1775
1776 if (wpa_key_mgmt[0])
1777 {
1778 for (p = strtok(wpa_key_mgmt, " \t"); p != NULL; p = strtok(NULL, " \t"))
1779 {
1780 if (!strncmp(p, "WPA-", 4))
1781 p += 4;
1782
1783 parse_wpa_suites(p, atoi(wpa), &c->wpa_version, &c->auth_suites);
1784 }
1785
1786 c->enabled = c->wpa_version ? 1 : 0;
1787 }
1788
1789 if (wpa_pairwise[0])
1790 parse_wpa_ciphers(wpa_pairwise, &c->pair_ciphers);
1791
1792 if (auth_algs[0])
1793 {
1794 switch (atoi(auth_algs))
1795 {
1796 case 1:
1797 c->auth_algs |= IWINFO_AUTH_OPEN;
1798 break;
1799
1800 case 2:
1801 c->auth_algs |= IWINFO_AUTH_SHARED;
1802 break;
1803
1804 case 3:
1805 c->auth_algs |= IWINFO_AUTH_OPEN;
1806 c->auth_algs |= IWINFO_AUTH_SHARED;
1807 break;
1808 }
1809
1810 c->pair_ciphers |= nl80211_check_wepkey(wep_key0);
1811 c->pair_ciphers |= nl80211_check_wepkey(wep_key1);
1812 c->pair_ciphers |= nl80211_check_wepkey(wep_key2);
1813 c->pair_ciphers |= nl80211_check_wepkey(wep_key3);
1814
1815 c->enabled = (c->auth_algs && c->pair_ciphers) ? 1 : 0;
1816 }
1817
1818 c->group_ciphers = c->pair_ciphers;
1819
1820 return 0;
1821 }
1822
1823 /* Ad-Hoc or Mesh interfaces without wpa_supplicant are open */
1824 else if (!nl80211_get_mode(ifname, &opmode) &&
1825 (opmode == IWINFO_OPMODE_ADHOC ||
1826 opmode == IWINFO_OPMODE_MESHPOINT))
1827 {
1828 c->enabled = 0;
1829
1830 return 0;
1831 }
1832
1833
1834 return -1;
1835 }
1836
1837 static int nl80211_get_phyname(const char *ifname, char *buf)
1838 {
1839 const char *name;
1840
1841 name = nl80211_ifname2phy(ifname);
1842
1843 if (name)
1844 {
1845 strcpy(buf, name);
1846 return 0;
1847 }
1848 else if ((name = nl80211_phy2ifname(ifname)) != NULL)
1849 {
1850 name = nl80211_ifname2phy(name);
1851
1852 if (name)
1853 {
1854 strcpy(buf, ifname);
1855 return 0;
1856 }
1857 }
1858
1859 return -1;
1860 }
1861
1862
1863 static void nl80211_parse_rateinfo(struct nlattr **ri,
1864 struct iwinfo_rate_entry *re)
1865 {
1866 if (ri[NL80211_RATE_INFO_BITRATE32])
1867 re->rate = nla_get_u32(ri[NL80211_RATE_INFO_BITRATE32]) * 100;
1868 else if (ri[NL80211_RATE_INFO_BITRATE])
1869 re->rate = nla_get_u16(ri[NL80211_RATE_INFO_BITRATE]) * 100;
1870
1871 if (ri[NL80211_RATE_INFO_VHT_MCS])
1872 {
1873 re->is_vht = 1;
1874 re->mcs = nla_get_u8(ri[NL80211_RATE_INFO_VHT_MCS]);
1875
1876 if (ri[NL80211_RATE_INFO_VHT_NSS])
1877 re->nss = nla_get_u8(ri[NL80211_RATE_INFO_VHT_NSS]);
1878 }
1879 else if (ri[NL80211_RATE_INFO_MCS])
1880 {
1881 re->is_ht = 1;
1882 re->mcs = nla_get_u8(ri[NL80211_RATE_INFO_MCS]);
1883 }
1884
1885 if (ri[NL80211_RATE_INFO_5_MHZ_WIDTH])
1886 re->mhz = 5;
1887 else if (ri[NL80211_RATE_INFO_10_MHZ_WIDTH])
1888 re->mhz = 10;
1889 else if (ri[NL80211_RATE_INFO_40_MHZ_WIDTH])
1890 re->mhz = 40;
1891 else if (ri[NL80211_RATE_INFO_80_MHZ_WIDTH])
1892 re->mhz = 80;
1893 else if (ri[NL80211_RATE_INFO_80P80_MHZ_WIDTH] ||
1894 ri[NL80211_RATE_INFO_160_MHZ_WIDTH])
1895 re->mhz = 160;
1896 else
1897 re->mhz = 20;
1898
1899 if (ri[NL80211_RATE_INFO_SHORT_GI])
1900 re->is_short_gi = 1;
1901
1902 re->is_40mhz = (re->mhz == 40);
1903 }
1904
1905 static int nl80211_get_survey_cb(struct nl_msg *msg, void *arg)
1906 {
1907 struct nl80211_array_buf *arr = arg;
1908 struct iwinfo_survey_entry *e = arr->buf;
1909 struct nlattr **attr = nl80211_parse(msg);
1910 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1911 int rc;
1912
1913 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1914 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1915 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1916 [NL80211_SURVEY_INFO_TIME] = { .type = NLA_U64 },
1917 [NL80211_SURVEY_INFO_TIME_BUSY] = { .type = NLA_U64 },
1918 [NL80211_SURVEY_INFO_TIME_EXT_BUSY] = { .type = NLA_U64 },
1919 [NL80211_SURVEY_INFO_TIME_RX] = { .type = NLA_U64 },
1920 [NL80211_SURVEY_INFO_TIME_TX] = { .type = NLA_U64 },
1921 };
1922
1923 rc = nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1924 attr[NL80211_ATTR_SURVEY_INFO],
1925 survey_policy);
1926 if (rc)
1927 return NL_SKIP;
1928
1929 /* advance to end of array */
1930 e += arr->count;
1931 memset(e, 0, sizeof(*e));
1932
1933 if (sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1934 e->mhz = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
1935
1936 if (sinfo[NL80211_SURVEY_INFO_NOISE])
1937 e->noise = nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1938
1939 if (sinfo[NL80211_SURVEY_INFO_TIME])
1940 e->active_time = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME]);
1941
1942 if (sinfo[NL80211_SURVEY_INFO_TIME_BUSY])
1943 e->busy_time = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_BUSY]);
1944
1945 if (sinfo[NL80211_SURVEY_INFO_TIME_EXT_BUSY])
1946 e->busy_time_ext = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_EXT_BUSY]);
1947
1948 if (sinfo[NL80211_SURVEY_INFO_TIME_RX])
1949 e->rxtime = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_RX]);
1950
1951 if (sinfo[NL80211_SURVEY_INFO_TIME_TX])
1952 e->txtime = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_TX]);
1953
1954 arr->count++;
1955 return NL_SKIP;
1956 }
1957
1958
1959 static void plink_state_to_str(char *dst, unsigned state)
1960 {
1961 switch (state) {
1962 case NL80211_PLINK_LISTEN:
1963 strcpy(dst, "LISTEN");
1964 break;
1965 case NL80211_PLINK_OPN_SNT:
1966 strcpy(dst, "OPN_SNT");
1967 break;
1968 case NL80211_PLINK_OPN_RCVD:
1969 strcpy(dst, "OPN_RCVD");
1970 break;
1971 case NL80211_PLINK_CNF_RCVD:
1972 strcpy(dst, "CNF_RCVD");
1973 break;
1974 case NL80211_PLINK_ESTAB:
1975 strcpy(dst, "ESTAB");
1976 break;
1977 case NL80211_PLINK_HOLDING:
1978 strcpy(dst, "HOLDING");
1979 break;
1980 case NL80211_PLINK_BLOCKED:
1981 strcpy(dst, "BLOCKED");
1982 break;
1983 default:
1984 strcpy(dst, "UNKNOWN");
1985 break;
1986 }
1987 }
1988
1989 static void power_mode_to_str(char *dst, struct nlattr *a)
1990 {
1991 enum nl80211_mesh_power_mode pm = nla_get_u32(a);
1992
1993 switch (pm) {
1994 case NL80211_MESH_POWER_ACTIVE:
1995 strcpy(dst, "ACTIVE");
1996 break;
1997 case NL80211_MESH_POWER_LIGHT_SLEEP:
1998 strcpy(dst, "LIGHT SLEEP");
1999 break;
2000 case NL80211_MESH_POWER_DEEP_SLEEP:
2001 strcpy(dst, "DEEP SLEEP");
2002 break;
2003 default:
2004 strcpy(dst, "UNKNOWN");
2005 break;
2006 }
2007 }
2008
2009 static int nl80211_get_assoclist_cb(struct nl_msg *msg, void *arg)
2010 {
2011 struct nl80211_array_buf *arr = arg;
2012 struct iwinfo_assoclist_entry *e = arr->buf;
2013 struct nlattr **attr = nl80211_parse(msg);
2014 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
2015 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
2016 struct nl80211_sta_flag_update *sta_flags;
2017
2018 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
2019 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
2020 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
2021 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
2022 [NL80211_STA_INFO_RX_BITRATE] = { .type = NLA_NESTED },
2023 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
2024 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
2025 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
2026 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
2027 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
2028 [NL80211_STA_INFO_TX_RETRIES] = { .type = NLA_U32 },
2029 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
2030 [NL80211_STA_INFO_CONNECTED_TIME]= { .type = NLA_U32 },
2031 [NL80211_STA_INFO_RX_DROP_MISC] = { .type = NLA_U64 },
2032 [NL80211_STA_INFO_T_OFFSET] = { .type = NLA_U64 },
2033 [NL80211_STA_INFO_STA_FLAGS] =
2034 { .minlen = sizeof(struct nl80211_sta_flag_update) },
2035 [NL80211_STA_INFO_EXPECTED_THROUGHPUT] = { .type = NLA_U32 },
2036 /* mesh */
2037 [NL80211_STA_INFO_LLID] = { .type = NLA_U16 },
2038 [NL80211_STA_INFO_PLID] = { .type = NLA_U16 },
2039 [NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 },
2040 [NL80211_STA_INFO_LOCAL_PM] = { .type = NLA_U32 },
2041 [NL80211_STA_INFO_PEER_PM] = { .type = NLA_U32 },
2042 [NL80211_STA_INFO_NONPEER_PM] = { .type = NLA_U32 },
2043 };
2044
2045 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
2046 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
2047 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
2048 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
2049 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
2050 };
2051
2052 /* advance to end of array */
2053 e += arr->count;
2054 memset(e, 0, sizeof(*e));
2055
2056 if (attr[NL80211_ATTR_MAC])
2057 memcpy(e->mac, nla_data(attr[NL80211_ATTR_MAC]), 6);
2058
2059 if (attr[NL80211_ATTR_STA_INFO] &&
2060 !nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
2061 attr[NL80211_ATTR_STA_INFO], stats_policy))
2062 {
2063 if (sinfo[NL80211_STA_INFO_SIGNAL])
2064 e->signal = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
2065
2066 if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
2067 e->signal_avg = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
2068
2069 if (sinfo[NL80211_STA_INFO_INACTIVE_TIME])
2070 e->inactive = nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]);
2071
2072 if (sinfo[NL80211_STA_INFO_CONNECTED_TIME])
2073 e->connected_time = nla_get_u32(sinfo[NL80211_STA_INFO_CONNECTED_TIME]);
2074
2075 if (sinfo[NL80211_STA_INFO_RX_PACKETS])
2076 e->rx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS]);
2077
2078 if (sinfo[NL80211_STA_INFO_TX_PACKETS])
2079 e->tx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS]);
2080
2081 if (sinfo[NL80211_STA_INFO_RX_BITRATE] &&
2082 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
2083 sinfo[NL80211_STA_INFO_RX_BITRATE], rate_policy))
2084 nl80211_parse_rateinfo(rinfo, &e->rx_rate);
2085
2086 if (sinfo[NL80211_STA_INFO_TX_BITRATE] &&
2087 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
2088 sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy))
2089 nl80211_parse_rateinfo(rinfo, &e->tx_rate);
2090
2091 if (sinfo[NL80211_STA_INFO_RX_BYTES])
2092 e->rx_bytes = nla_get_u32(sinfo[NL80211_STA_INFO_RX_BYTES]);
2093
2094 if (sinfo[NL80211_STA_INFO_TX_BYTES])
2095 e->tx_bytes = nla_get_u32(sinfo[NL80211_STA_INFO_TX_BYTES]);
2096
2097 if (sinfo[NL80211_STA_INFO_TX_RETRIES])
2098 e->tx_retries = nla_get_u32(sinfo[NL80211_STA_INFO_TX_RETRIES]);
2099
2100 if (sinfo[NL80211_STA_INFO_TX_FAILED])
2101 e->tx_failed = nla_get_u32(sinfo[NL80211_STA_INFO_TX_FAILED]);
2102
2103 if (sinfo[NL80211_STA_INFO_T_OFFSET])
2104 e->t_offset = nla_get_u64(sinfo[NL80211_STA_INFO_T_OFFSET]);
2105
2106 if (sinfo[NL80211_STA_INFO_RX_DROP_MISC])
2107 e->rx_drop_misc = nla_get_u64(sinfo[NL80211_STA_INFO_RX_DROP_MISC]);
2108
2109 if (sinfo[NL80211_STA_INFO_EXPECTED_THROUGHPUT])
2110 e->thr = nla_get_u32(sinfo[NL80211_STA_INFO_EXPECTED_THROUGHPUT]);
2111
2112 /* mesh */
2113 if (sinfo[NL80211_STA_INFO_LLID])
2114 e->llid = nla_get_u16(sinfo[NL80211_STA_INFO_LLID]);
2115
2116 if (sinfo[NL80211_STA_INFO_PLID])
2117 e->plid = nla_get_u16(sinfo[NL80211_STA_INFO_PLID]);
2118
2119 if (sinfo[NL80211_STA_INFO_PLINK_STATE])
2120 plink_state_to_str(e->plink_state,
2121 nla_get_u8(sinfo[NL80211_STA_INFO_PLINK_STATE]));
2122
2123 if (sinfo[NL80211_STA_INFO_LOCAL_PM])
2124 power_mode_to_str(e->local_ps, sinfo[NL80211_STA_INFO_LOCAL_PM]);
2125 if (sinfo[NL80211_STA_INFO_PEER_PM])
2126 power_mode_to_str(e->peer_ps, sinfo[NL80211_STA_INFO_PEER_PM]);
2127 if (sinfo[NL80211_STA_INFO_NONPEER_PM])
2128 power_mode_to_str(e->nonpeer_ps, sinfo[NL80211_STA_INFO_NONPEER_PM]);
2129
2130 /* Station flags */
2131 if (sinfo[NL80211_STA_INFO_STA_FLAGS])
2132 {
2133 sta_flags = (struct nl80211_sta_flag_update *)
2134 nla_data(sinfo[NL80211_STA_INFO_STA_FLAGS]);
2135
2136 if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
2137 sta_flags->set & BIT(NL80211_STA_FLAG_AUTHORIZED))
2138 e->is_authorized = 1;
2139
2140 if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
2141 sta_flags->set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
2142 e->is_authenticated = 1;
2143
2144 if (sta_flags->mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) &&
2145 sta_flags->set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
2146 e->is_preamble_short = 1;
2147
2148 if (sta_flags->mask & BIT(NL80211_STA_FLAG_WME) &&
2149 sta_flags->set & BIT(NL80211_STA_FLAG_WME))
2150 e->is_wme = 1;
2151
2152 if (sta_flags->mask & BIT(NL80211_STA_FLAG_MFP) &&
2153 sta_flags->set & BIT(NL80211_STA_FLAG_MFP))
2154 e->is_mfp = 1;
2155
2156 if (sta_flags->mask & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
2157 sta_flags->set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2158 e->is_tdls = 1;
2159 }
2160 }
2161
2162 e->noise = 0; /* filled in by caller */
2163 arr->count++;
2164
2165 return NL_SKIP;
2166 }
2167
2168 static int nl80211_get_survey(const char *ifname, char *buf, int *len)
2169 {
2170 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
2171 int rc;
2172
2173 rc = nl80211_request(ifname, NL80211_CMD_GET_SURVEY,
2174 NLM_F_DUMP, nl80211_get_survey_cb, &arr);
2175 if (!rc)
2176 *len = (arr.count * sizeof(struct iwinfo_survey_entry));
2177 else
2178 *len = 0;
2179
2180 return 0;
2181 }
2182
2183 static int nl80211_get_assoclist(const char *ifname, char *buf, int *len)
2184 {
2185 DIR *d;
2186 int i, noise = 0;
2187 struct dirent *de;
2188 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
2189 struct iwinfo_assoclist_entry *e;
2190
2191 if ((d = opendir("/sys/class/net")) != NULL)
2192 {
2193 while ((de = readdir(d)) != NULL)
2194 {
2195 if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
2196 (!de->d_name[strlen(ifname)] ||
2197 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
2198 {
2199 nl80211_request(de->d_name, NL80211_CMD_GET_STATION,
2200 NLM_F_DUMP, nl80211_get_assoclist_cb, &arr);
2201 }
2202 }
2203
2204 closedir(d);
2205
2206 if (!nl80211_get_noise(ifname, &noise))
2207 for (i = 0, e = arr.buf; i < arr.count; i++, e++)
2208 e->noise = noise;
2209
2210 *len = (arr.count * sizeof(struct iwinfo_assoclist_entry));
2211 return 0;
2212 }
2213
2214 return -1;
2215 }
2216
2217 static int nl80211_get_txpwrlist_cb(struct nl_msg *msg, void *arg)
2218 {
2219 int *dbm_max = arg;
2220 int ch_cur, ch_cmp, bands_remain, freqs_remain;
2221
2222 struct nlattr **attr = nl80211_parse(msg);
2223 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
2224 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
2225 struct nlattr *band, *freq;
2226
2227 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2228 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2229 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2230 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2231 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2232 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2233 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2234 };
2235
2236 ch_cur = *dbm_max; /* value int* is initialized with channel by caller */
2237 *dbm_max = -1;
2238
2239 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
2240 {
2241 nla_parse(bands, NL80211_BAND_ATTR_MAX, nla_data(band),
2242 nla_len(band), NULL);
2243
2244 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
2245 {
2246 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
2247 nla_data(freq), nla_len(freq), freq_policy);
2248
2249 ch_cmp = nl80211_freq2channel(nla_get_u32(
2250 freqs[NL80211_FREQUENCY_ATTR_FREQ]));
2251
2252 if ((!ch_cur || (ch_cmp == ch_cur)) &&
2253 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER])
2254 {
2255 *dbm_max = (int)(0.01 * nla_get_u32(
2256 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]));
2257
2258 break;
2259 }
2260 }
2261 }
2262
2263 return NL_SKIP;
2264 }
2265
2266 static int nl80211_get_txpwrlist(const char *ifname, char *buf, int *len)
2267 {
2268 int err, ch_cur;
2269 int dbm_max = -1, dbm_cur, dbm_cnt;
2270 struct nl80211_msg_conveyor *req;
2271 struct iwinfo_txpwrlist_entry entry;
2272
2273 if (nl80211_get_channel(ifname, &ch_cur))
2274 ch_cur = 0;
2275
2276 /* initialize the value pointer with channel for callback */
2277 dbm_max = ch_cur;
2278
2279 err = nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0,
2280 nl80211_get_txpwrlist_cb, &dbm_max);
2281
2282 if (!err)
2283 {
2284 for (dbm_cur = 0, dbm_cnt = 0;
2285 dbm_cur < dbm_max;
2286 dbm_cur++, dbm_cnt++)
2287 {
2288 entry.dbm = dbm_cur;
2289 entry.mw = iwinfo_dbm2mw(dbm_cur);
2290
2291 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
2292 }
2293
2294 entry.dbm = dbm_max;
2295 entry.mw = iwinfo_dbm2mw(dbm_max);
2296
2297 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
2298 dbm_cnt++;
2299
2300 *len = dbm_cnt * sizeof(entry);
2301 return 0;
2302 }
2303
2304 return -1;
2305 }
2306
2307 static void nl80211_get_scancrypto(char *spec, struct iwinfo_crypto_entry *c)
2308 {
2309 int wpa_version = 0;
2310 char *p, *q, *proto, *suites;
2311
2312 c->enabled = 0;
2313
2314 for (p = strtok_r(spec, "[]", &q); p; p = strtok_r(NULL, "[]", &q)) {
2315 if (!strcmp(p, "WEP")) {
2316 c->enabled = 1;
2317 c->auth_suites = IWINFO_KMGMT_NONE;
2318 c->auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
2319 c->pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
2320 break;
2321 }
2322
2323 proto = strtok(p, "-");
2324 suites = strtok(NULL, "]");
2325
2326 if (!proto || !suites)
2327 continue;
2328
2329 if (!strcmp(proto, "WPA2") || !strcmp(proto, "RSN"))
2330 wpa_version = 2;
2331 else if (!strcmp(proto, "WPA"))
2332 wpa_version = 1;
2333 else
2334 continue;
2335
2336 c->enabled = 1;
2337
2338 parse_wpa_suites(suites, wpa_version, &c->wpa_version, &c->auth_suites);
2339 parse_wpa_ciphers(suites, &c->pair_ciphers);
2340 }
2341 }
2342
2343
2344 struct nl80211_scanlist {
2345 struct iwinfo_scanlist_entry *e;
2346 int len;
2347 };
2348
2349
2350 static void nl80211_get_scanlist_ie(struct nlattr **bss,
2351 struct iwinfo_scanlist_entry *e)
2352 {
2353 int ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2354 unsigned char *ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2355 static unsigned char ms_oui[3] = { 0x00, 0x50, 0xf2 };
2356 int len;
2357
2358 while (ielen >= 2 && ielen >= ie[1])
2359 {
2360 switch (ie[0])
2361 {
2362 case 0: /* SSID */
2363 case 114: /* Mesh ID */
2364 if (e->ssid[0] == 0) {
2365 len = min(ie[1], IWINFO_ESSID_MAX_SIZE);
2366 memcpy(e->ssid, ie + 2, len);
2367 e->ssid[len] = 0;
2368 }
2369 break;
2370
2371 case 48: /* RSN */
2372 iwinfo_parse_rsn(&e->crypto, ie + 2, ie[1],
2373 IWINFO_CIPHER_CCMP, IWINFO_KMGMT_8021x);
2374 break;
2375
2376 case 221: /* Vendor */
2377 if (ie[1] >= 4 && !memcmp(ie + 2, ms_oui, 3) && ie[5] == 1)
2378 iwinfo_parse_rsn(&e->crypto, ie + 6, ie[1] - 4,
2379 IWINFO_CIPHER_TKIP, IWINFO_KMGMT_PSK);
2380 break;
2381 case 61: /* HT oeration */
2382 e->ht_chan_info.primary_chan = ie[2];
2383 e->ht_chan_info.secondary_chan_off = ie[3] & 0x3;
2384 e->ht_chan_info.chan_width = (ie[4] & 0x4)>>2;
2385 break;
2386 case 192: /* VHT operation */
2387 e->vht_chan_info.chan_width = ie[2];
2388 e->vht_chan_info.center_chan_1 = ie[3];
2389 e->vht_chan_info.center_chan_2 = ie[4];
2390 break;
2391 }
2392
2393 ielen -= ie[1] + 2;
2394 ie += ie[1] + 2;
2395 }
2396 }
2397
2398 static int nl80211_get_scanlist_cb(struct nl_msg *msg, void *arg)
2399 {
2400 int8_t rssi;
2401 uint16_t caps;
2402
2403 struct nl80211_scanlist *sl = arg;
2404 struct nlattr **tb = nl80211_parse(msg);
2405 struct nlattr *bss[NL80211_BSS_MAX + 1];
2406
2407 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2408 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2409 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2410 [NL80211_BSS_BSSID] = { 0 },
2411 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2412 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2413 [NL80211_BSS_INFORMATION_ELEMENTS] = { 0 },
2414 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2415 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2416 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2417 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2418 [NL80211_BSS_BEACON_IES] = { 0 },
2419 };
2420
2421 if (!tb[NL80211_ATTR_BSS] ||
2422 nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2423 bss_policy) ||
2424 !bss[NL80211_BSS_BSSID])
2425 {
2426 return NL_SKIP;
2427 }
2428
2429 if (bss[NL80211_BSS_CAPABILITY])
2430 caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2431 else
2432 caps = 0;
2433
2434 memset(sl->e, 0, sizeof(*sl->e));
2435 memcpy(sl->e->mac, nla_data(bss[NL80211_BSS_BSSID]), 6);
2436
2437 if (caps & (1<<1))
2438 sl->e->mode = IWINFO_OPMODE_ADHOC;
2439 else if (caps & (1<<0))
2440 sl->e->mode = IWINFO_OPMODE_MASTER;
2441 else
2442 sl->e->mode = IWINFO_OPMODE_MESHPOINT;
2443
2444 if (caps & (1<<4))
2445 sl->e->crypto.enabled = 1;
2446
2447 if (bss[NL80211_BSS_FREQUENCY])
2448 sl->e->channel = nl80211_freq2channel(nla_get_u32(
2449 bss[NL80211_BSS_FREQUENCY]));
2450
2451 if (bss[NL80211_BSS_INFORMATION_ELEMENTS])
2452 nl80211_get_scanlist_ie(bss, sl->e);
2453
2454 if (bss[NL80211_BSS_SIGNAL_MBM])
2455 {
2456 sl->e->signal =
2457 (uint8_t)((int32_t)nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]) / 100);
2458
2459 rssi = sl->e->signal - 0x100;
2460
2461 if (rssi < -110)
2462 rssi = -110;
2463 else if (rssi > -40)
2464 rssi = -40;
2465
2466 sl->e->quality = (rssi + 110);
2467 sl->e->quality_max = 70;
2468 }
2469
2470 if (sl->e->crypto.enabled && !sl->e->crypto.wpa_version)
2471 {
2472 sl->e->crypto.auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
2473 sl->e->crypto.pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
2474 }
2475
2476 sl->e++;
2477 sl->len++;
2478
2479 return NL_SKIP;
2480 }
2481
2482 static int nl80211_get_scanlist_nl(const char *ifname, char *buf, int *len)
2483 {
2484 struct nl80211_scanlist sl = { .e = (struct iwinfo_scanlist_entry *)buf };
2485
2486 if (nl80211_request(ifname, NL80211_CMD_TRIGGER_SCAN, 0, NULL, NULL))
2487 goto out;
2488
2489 if (nl80211_wait("nl80211", "scan",
2490 NL80211_CMD_NEW_SCAN_RESULTS, NL80211_CMD_SCAN_ABORTED))
2491 goto out;
2492
2493 if (nl80211_request(ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP,
2494 nl80211_get_scanlist_cb, &sl))
2495 goto out;
2496
2497 *len = sl.len * sizeof(struct iwinfo_scanlist_entry);
2498 return 0;
2499
2500 out:
2501 *len = 0;
2502 return -1;
2503 }
2504
2505 static int wpasupp_ssid_decode(const char *in, char *out, int outlen)
2506 {
2507 #define hex(x) \
2508 (((x) >= 'a') ? ((x) - 'a' + 10) : \
2509 (((x) >= 'A') ? ((x) - 'A' + 10) : ((x) - '0')))
2510
2511 int len = 0;
2512
2513 while (*in)
2514 {
2515 if (len + 1 >= outlen)
2516 break;
2517
2518 switch (*in)
2519 {
2520 case '\\':
2521 in++;
2522 switch (*in)
2523 {
2524 case 'n':
2525 out[len++] = '\n'; in++;
2526 break;
2527
2528 case 'r':
2529 out[len++] = '\r'; in++;
2530 break;
2531
2532 case 't':
2533 out[len++] = '\t'; in++;
2534 break;
2535
2536 case 'e':
2537 out[len++] = '\033'; in++;
2538 break;
2539
2540 case 'x':
2541 if (isxdigit(*(in+1)) && isxdigit(*(in+2)))
2542 out[len++] = hex(*(in+1)) * 16 + hex(*(in+2));
2543 in += 3;
2544 break;
2545
2546 default:
2547 out[len++] = *in++;
2548 break;
2549 }
2550 break;
2551
2552 default:
2553 out[len++] = *in++;
2554 break;
2555 }
2556 }
2557
2558 if (outlen > len)
2559 out[len] = '\0';
2560
2561 return len;
2562 }
2563
2564 static int nl80211_get_scanlist_wpactl(const char *ifname, char *buf, int *len)
2565 {
2566 int sock, qmax, rssi, tries, count = -1, ready = 0;
2567 char *pos, *line, *bssid, *freq, *signal, *flags, *ssid, reply[4096];
2568 struct sockaddr_un local = { 0 };
2569 struct iwinfo_scanlist_entry *e = (struct iwinfo_scanlist_entry *)buf;
2570
2571 sock = nl80211_wpactl_connect(ifname, &local);
2572
2573 if (sock < 0)
2574 return sock;
2575
2576 send(sock, "ATTACH", 6, 0);
2577 send(sock, "SCAN", 4, 0);
2578
2579 /*
2580 * wait for scan results:
2581 * nl80211_wpactl_recv() will use a timeout of 256ms and we need to scan
2582 * 72 channels at most. We'll also receive two "OK" messages acknowledging
2583 * the "ATTACH" and "SCAN" commands and the driver might need a bit extra
2584 * time to process the results, so try 72 + 2 + 1 times.
2585 */
2586 for (tries = 0; tries < 75; tries++)
2587 {
2588 if (nl80211_wpactl_recv(sock, reply, sizeof(reply)) <= 0)
2589 continue;
2590
2591 /* got an event notification */
2592 if (reply[0] == '<')
2593 {
2594 /* scan results are ready */
2595 if (strstr(reply, "CTRL-EVENT-SCAN-RESULTS"))
2596 {
2597 /* send "SCAN_RESULTS" command */
2598 ready = (send(sock, "SCAN_RESULTS", 12, 0) == 12);
2599 break;
2600 }
2601
2602 /* is another unrelated event, retry */
2603 tries--;
2604 }
2605
2606 /* scanning already in progress, keep awaiting results */
2607 else if (!strcmp(reply, "FAIL-BUSY\n"))
2608 {
2609 tries--;
2610 }
2611
2612 /* another failure, abort */
2613 else if (!strncmp(reply, "FAIL-", 5))
2614 {
2615 break;
2616 }
2617 }
2618
2619 /* receive and parse scan results if the wait above didn't time out */
2620 while (ready && nl80211_wpactl_recv(sock, reply, sizeof(reply)) > 0)
2621 {
2622 /* received an event notification, receive again */
2623 if (reply[0] == '<')
2624 continue;
2625
2626 nl80211_get_quality_max(ifname, &qmax);
2627
2628 for (line = strtok_r(reply, "\n", &pos);
2629 line != NULL;
2630 line = strtok_r(NULL, "\n", &pos))
2631 {
2632 /* skip header line */
2633 if (count < 0)
2634 {
2635 count++;
2636 continue;
2637 }
2638
2639 bssid = strtok(line, "\t");
2640 freq = strtok(NULL, "\t");
2641 signal = strtok(NULL, "\t");
2642 flags = strtok(NULL, "\t");
2643 ssid = strtok(NULL, "\n");
2644
2645 if (!bssid || !freq || !signal || !flags)
2646 continue;
2647
2648 /* BSSID */
2649 e->mac[0] = strtol(&bssid[0], NULL, 16);
2650 e->mac[1] = strtol(&bssid[3], NULL, 16);
2651 e->mac[2] = strtol(&bssid[6], NULL, 16);
2652 e->mac[3] = strtol(&bssid[9], NULL, 16);
2653 e->mac[4] = strtol(&bssid[12], NULL, 16);
2654 e->mac[5] = strtol(&bssid[15], NULL, 16);
2655
2656 /* SSID */
2657 if (ssid)
2658 wpasupp_ssid_decode(ssid, e->ssid, sizeof(e->ssid));
2659 else
2660 e->ssid[0] = 0;
2661
2662 /* Mode */
2663 if (strstr(flags, "[MESH]"))
2664 e->mode = IWINFO_OPMODE_MESHPOINT;
2665 else if (strstr(flags, "[IBSS]"))
2666 e->mode = IWINFO_OPMODE_ADHOC;
2667 else
2668 e->mode = IWINFO_OPMODE_MASTER;
2669
2670 /* Channel */
2671 e->channel = nl80211_freq2channel(atoi(freq));
2672
2673 /* Signal */
2674 rssi = atoi(signal);
2675 e->signal = rssi;
2676
2677 /* Quality */
2678 if (rssi < 0)
2679 {
2680 /* The cfg80211 wext compat layer assumes a signal range
2681 * of -110 dBm to -40 dBm, the quality value is derived
2682 * by adding 110 to the signal level */
2683 if (rssi < -110)
2684 rssi = -110;
2685 else if (rssi > -40)
2686 rssi = -40;
2687
2688 e->quality = (rssi + 110);
2689 }
2690 else
2691 {
2692 e->quality = rssi;
2693 }
2694
2695 /* Max. Quality */
2696 e->quality_max = qmax;
2697
2698 /* Crypto */
2699 nl80211_get_scancrypto(flags, &e->crypto);
2700
2701 count++;
2702 e++;
2703 }
2704
2705 *len = count * sizeof(struct iwinfo_scanlist_entry);
2706 break;
2707 }
2708
2709 close(sock);
2710 unlink(local.sun_path);
2711
2712 return (count >= 0) ? 0 : -1;
2713 }
2714
2715 static int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
2716 {
2717 char *res;
2718 int rv, mode;
2719
2720 *len = 0;
2721
2722 /* Got a radioX pseudo interface, find some interface on it or create one */
2723 if (!strncmp(ifname, "radio", 5))
2724 {
2725 /* Reuse existing interface */
2726 if ((res = nl80211_phy2ifname(ifname)) != NULL)
2727 {
2728 return nl80211_get_scanlist(res, buf, len);
2729 }
2730
2731 /* Need to spawn a temporary iface for scanning */
2732 else if ((res = nl80211_ifadd(ifname)) != NULL)
2733 {
2734 rv = nl80211_get_scanlist(res, buf, len);
2735 nl80211_ifdel(res);
2736 return rv;
2737 }
2738 }
2739
2740 /* WPA supplicant */
2741 if (!nl80211_get_scanlist_wpactl(ifname, buf, len))
2742 {
2743 return 0;
2744 }
2745
2746 /* station / ad-hoc / monitor scan */
2747 else if (!nl80211_get_mode(ifname, &mode) &&
2748 (mode == IWINFO_OPMODE_ADHOC ||
2749 mode == IWINFO_OPMODE_MASTER ||
2750 mode == IWINFO_OPMODE_CLIENT ||
2751 mode == IWINFO_OPMODE_MONITOR) &&
2752 iwinfo_ifup(ifname))
2753 {
2754 return nl80211_get_scanlist_nl(ifname, buf, len);
2755 }
2756
2757 /* AP scan */
2758 else
2759 {
2760 /* Got a temp interface, don't create yet another one */
2761 if (!strncmp(ifname, "tmp.", 4))
2762 {
2763 if (!iwinfo_ifup(ifname))
2764 return -1;
2765
2766 rv = nl80211_get_scanlist_nl(ifname, buf, len);
2767 iwinfo_ifdown(ifname);
2768 return rv;
2769 }
2770
2771 /* Spawn a new scan interface */
2772 else
2773 {
2774 if (!(res = nl80211_ifadd(ifname)))
2775 return -1;
2776
2777 iwinfo_ifmac(res);
2778
2779 /* if we can take the new interface up, the driver supports an
2780 * additional interface and there's no need to tear down the ap */
2781 if (iwinfo_ifup(res))
2782 {
2783 rv = nl80211_get_scanlist_nl(res, buf, len);
2784 iwinfo_ifdown(res);
2785 }
2786
2787 /* driver cannot create secondary interface, take down ap
2788 * during scan */
2789 else if (iwinfo_ifdown(ifname) && iwinfo_ifup(res))
2790 {
2791 rv = nl80211_get_scanlist_nl(res, buf, len);
2792 iwinfo_ifdown(res);
2793 iwinfo_ifup(ifname);
2794 nl80211_hostapd_hup(ifname);
2795 }
2796
2797 nl80211_ifdel(res);
2798 return rv;
2799 }
2800 }
2801
2802 return -1;
2803 }
2804
2805 static int nl80211_get_freqlist_cb(struct nl_msg *msg, void *arg)
2806 {
2807 int bands_remain, freqs_remain;
2808
2809 struct nl80211_array_buf *arr = arg;
2810 struct iwinfo_freqlist_entry *e;
2811
2812 struct nlattr **attr = nl80211_parse(msg);
2813 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
2814 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
2815 struct nlattr *band, *freq;
2816
2817 e = arr->buf;
2818 e += arr->count;
2819
2820 if (attr[NL80211_ATTR_WIPHY_BANDS]) {
2821 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
2822 {
2823 nla_parse(bands, NL80211_BAND_ATTR_MAX,
2824 nla_data(band), nla_len(band), NULL);
2825
2826 if (bands[NL80211_BAND_ATTR_FREQS]) {
2827 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
2828 {
2829 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
2830 nla_data(freq), nla_len(freq), NULL);
2831
2832 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ] ||
2833 freqs[NL80211_FREQUENCY_ATTR_DISABLED])
2834 continue;
2835
2836 e->mhz = nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]);
2837 e->channel = nl80211_freq2channel(e->mhz);
2838
2839 e->restricted = (
2840 freqs[NL80211_FREQUENCY_ATTR_NO_IR] &&
2841 !freqs[NL80211_FREQUENCY_ATTR_RADAR]
2842 ) ? 1 : 0;
2843
2844 if (freqs[NL80211_FREQUENCY_ATTR_NO_HT40_MINUS])
2845 e->flags |= IWINFO_FREQ_NO_HT40MINUS;
2846 if (freqs[NL80211_FREQUENCY_ATTR_NO_HT40_PLUS])
2847 e->flags |= IWINFO_FREQ_NO_HT40PLUS;
2848 if (freqs[NL80211_FREQUENCY_ATTR_NO_80MHZ])
2849 e->flags |= IWINFO_FREQ_NO_80MHZ;
2850 if (freqs[NL80211_FREQUENCY_ATTR_NO_160MHZ])
2851 e->flags |= IWINFO_FREQ_NO_160MHZ;
2852 if (freqs[NL80211_FREQUENCY_ATTR_NO_20MHZ])
2853 e->flags |= IWINFO_FREQ_NO_20MHZ;
2854 if (freqs[NL80211_FREQUENCY_ATTR_NO_10MHZ])
2855 e->flags |= IWINFO_FREQ_NO_10MHZ;
2856
2857 e++;
2858 arr->count++;
2859 }
2860 }
2861 }
2862 }
2863
2864 return NL_SKIP;
2865 }
2866
2867 static int nl80211_get_freqlist(const char *ifname, char *buf, int *len)
2868 {
2869 struct nl80211_msg_conveyor *cv;
2870 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
2871 uint32_t features = nl80211_get_protocol_features(ifname);
2872 int flags;
2873
2874 flags = features & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP ? NLM_F_DUMP : 0;
2875 cv = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, flags);
2876 if (!cv)
2877 goto out;
2878
2879 NLA_PUT_FLAG(cv->msg, NL80211_ATTR_SPLIT_WIPHY_DUMP);
2880 if (nl80211_send(cv, nl80211_get_freqlist_cb, &arr))
2881 goto out;
2882
2883 *len = arr.count * sizeof(struct iwinfo_freqlist_entry);
2884 return 0;
2885
2886 nla_put_failure:
2887 nl80211_free(cv);
2888 out:
2889 *len = 0;
2890 return -1;
2891 }
2892
2893 static int nl80211_get_country_cb(struct nl_msg *msg, void *arg)
2894 {
2895 char *buf = arg;
2896 struct nlattr **attr = nl80211_parse(msg);
2897
2898 if (attr[NL80211_ATTR_REG_ALPHA2])
2899 memcpy(buf, nla_data(attr[NL80211_ATTR_REG_ALPHA2]), 2);
2900 else
2901 buf[0] = 0;
2902
2903 return NL_SKIP;
2904 }
2905
2906 static int nl80211_get_country(const char *ifname, char *buf)
2907 {
2908 if (nl80211_request(ifname, NL80211_CMD_GET_REG, 0,
2909 nl80211_get_country_cb, buf))
2910 return -1;
2911
2912 return 0;
2913 }
2914
2915 static int nl80211_get_countrylist(const char *ifname, char *buf, int *len)
2916 {
2917 int count;
2918 struct iwinfo_country_entry *e = (struct iwinfo_country_entry *)buf;
2919 const struct iwinfo_iso3166_label *l;
2920
2921 for (l = IWINFO_ISO3166_NAMES, count = 0; l->iso3166; l++, e++, count++)
2922 {
2923 e->iso3166 = l->iso3166;
2924 e->ccode[0] = (l->iso3166 / 256);
2925 e->ccode[1] = (l->iso3166 % 256);
2926 e->ccode[2] = 0;
2927 }
2928
2929 *len = (count * sizeof(struct iwinfo_country_entry));
2930 return 0;
2931 }
2932
2933
2934 struct nl80211_modes
2935 {
2936 bool ok;
2937 uint32_t hw;
2938 uint32_t ht;
2939 };
2940
2941 static int nl80211_get_modelist_cb(struct nl_msg *msg, void *arg)
2942 {
2943 struct nl80211_modes *m = arg;
2944 int bands_remain, freqs_remain;
2945 uint16_t caps = 0;
2946 uint32_t vht_caps = 0;
2947 struct nlattr **attr = nl80211_parse(msg);
2948 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
2949 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
2950 struct nlattr *band, *freq;
2951
2952 if (attr[NL80211_ATTR_WIPHY_BANDS])
2953 {
2954 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
2955 {
2956 nla_parse(bands, NL80211_BAND_ATTR_MAX,
2957 nla_data(band), nla_len(band), NULL);
2958
2959 if (bands[NL80211_BAND_ATTR_HT_CAPA])
2960 caps = nla_get_u16(bands[NL80211_BAND_ATTR_HT_CAPA]);
2961
2962 /* Treat any nonzero capability as 11n */
2963 if (caps > 0)
2964 {
2965 m->hw |= IWINFO_80211_N;
2966 m->ht |= IWINFO_HTMODE_HT20;
2967
2968 if (caps & (1 << 1))
2969 m->ht |= IWINFO_HTMODE_HT40;
2970 }
2971
2972 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS],
2973 freqs_remain)
2974 {
2975 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
2976 nla_data(freq), nla_len(freq), NULL);
2977
2978 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ])
2979 continue;
2980
2981 if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) < 2485)
2982 {
2983 m->hw |= IWINFO_80211_B;
2984 m->hw |= IWINFO_80211_G;
2985 }
2986 else if (bands[NL80211_BAND_ATTR_VHT_CAPA])
2987 {
2988 vht_caps = nla_get_u32(bands[NL80211_BAND_ATTR_VHT_CAPA]);
2989
2990 /* Treat any nonzero capability as 11ac */
2991 if (vht_caps > 0)
2992 {
2993 m->hw |= IWINFO_80211_AC;
2994 m->ht |= IWINFO_HTMODE_VHT20 | IWINFO_HTMODE_VHT40 | IWINFO_HTMODE_VHT80;
2995
2996 switch ((vht_caps >> 2) & 3)
2997 {
2998 case 2:
2999 m->ht |= IWINFO_HTMODE_VHT80_80;
3000 /* fall through */
3001
3002 case 1:
3003 m->ht |= IWINFO_HTMODE_VHT160;
3004 }
3005 }
3006 }
3007 else if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) >= 56160)
3008 {
3009 m->hw |= IWINFO_80211_AD;
3010 }
3011 else if (!(m->hw & IWINFO_80211_AC))
3012 {
3013 m->hw |= IWINFO_80211_A;
3014 }
3015 }
3016 }
3017
3018 m->ok = 1;
3019 }
3020
3021 return NL_SKIP;
3022 }
3023
3024 static int nl80211_get_hwmodelist(const char *ifname, int *buf)
3025 {
3026 struct nl80211_modes m = { 0 };
3027
3028 if (nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0,
3029 nl80211_get_modelist_cb, &m))
3030 goto out;
3031
3032 if (!m.ok)
3033 goto out;
3034
3035 *buf = m.hw;
3036 return 0;
3037
3038 out:
3039 *buf = 0;
3040 return -1;
3041 }
3042
3043 struct chan_info {
3044 int width;
3045 int mode;
3046 };
3047
3048 static int nl80211_get_htmode_cb(struct nl_msg *msg, void *arg)
3049 {
3050 struct nlattr **tb = nl80211_parse(msg);
3051 struct nlattr *cur;
3052 struct chan_info *chn = arg;
3053
3054 if ((cur = tb[NL80211_ATTR_CHANNEL_WIDTH]))
3055 chn->width = nla_get_u32(cur);
3056
3057 if ((cur = tb[NL80211_ATTR_BSS_HT_OPMODE]))
3058 chn->mode = nla_get_u32(cur);
3059
3060 return NL_SKIP;
3061 }
3062
3063 static int nl80211_get_htmode(const char *ifname, int *buf)
3064 {
3065 struct chan_info chn = { .width = 0, .mode = 0 };
3066 char *res;
3067 int err;
3068
3069 res = nl80211_phy2ifname(ifname);
3070 *buf = 0;
3071
3072 err = nl80211_request(res ? res : ifname,
3073 NL80211_CMD_GET_INTERFACE, 0,
3074 nl80211_get_htmode_cb, &chn);
3075 if (err)
3076 return -1;
3077
3078 switch (chn.width) {
3079 case NL80211_CHAN_WIDTH_20:
3080 if (chn.mode == -1)
3081 *buf = IWINFO_HTMODE_VHT20;
3082 else
3083 *buf = IWINFO_HTMODE_HT20;
3084 break;
3085 case NL80211_CHAN_WIDTH_40:
3086 if (chn.mode == -1)
3087 *buf = IWINFO_HTMODE_VHT40;
3088 else
3089 *buf = IWINFO_HTMODE_HT40;
3090 break;
3091 case NL80211_CHAN_WIDTH_80:
3092 *buf = IWINFO_HTMODE_VHT80;
3093 break;
3094 case NL80211_CHAN_WIDTH_80P80:
3095 *buf = IWINFO_HTMODE_VHT80_80;
3096 break;
3097 case NL80211_CHAN_WIDTH_160:
3098 *buf = IWINFO_HTMODE_VHT160;
3099 break;
3100 case NL80211_CHAN_WIDTH_5:
3101 case NL80211_CHAN_WIDTH_10:
3102 case NL80211_CHAN_WIDTH_20_NOHT:
3103 *buf = IWINFO_HTMODE_NOHT;
3104 break;
3105 default:
3106 return -1;
3107 }
3108
3109 return 0;
3110 }
3111
3112 static int nl80211_get_htmodelist(const char *ifname, int *buf)
3113 {
3114 struct nl80211_modes m = { 0 };
3115
3116 if (nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0,
3117 nl80211_get_modelist_cb, &m))
3118 goto out;
3119
3120 if (!m.ok)
3121 goto out;
3122
3123 *buf = m.ht;
3124 return 0;
3125
3126 out:
3127 *buf = 0;
3128 return -1;
3129 }
3130
3131
3132 static int nl80211_get_ifcomb_cb(struct nl_msg *msg, void *arg)
3133 {
3134 struct nlattr **attr = nl80211_parse(msg);
3135 struct nlattr *comb;
3136 int *ret = arg;
3137 int comb_rem, limit_rem, mode_rem;
3138
3139 *ret = 0;
3140 if (!attr[NL80211_ATTR_INTERFACE_COMBINATIONS])
3141 return NL_SKIP;
3142
3143 nla_for_each_nested(comb, attr[NL80211_ATTR_INTERFACE_COMBINATIONS], comb_rem)
3144 {
3145 static struct nla_policy iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
3146 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
3147 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
3148 };
3149 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB+1];
3150 static struct nla_policy iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
3151 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
3152 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
3153 };
3154 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT+1];
3155 struct nlattr *limit;
3156
3157 nla_parse_nested(tb_comb, NUM_NL80211_IFACE_COMB, comb, iface_combination_policy);
3158
3159 if (!tb_comb[NL80211_IFACE_COMB_LIMITS])
3160 continue;
3161
3162 nla_for_each_nested(limit, tb_comb[NL80211_IFACE_COMB_LIMITS], limit_rem)
3163 {
3164 struct nlattr *mode;
3165
3166 nla_parse_nested(tb_limit, NUM_NL80211_IFACE_LIMIT, limit, iface_limit_policy);
3167
3168 if (!tb_limit[NL80211_IFACE_LIMIT_TYPES] ||
3169 !tb_limit[NL80211_IFACE_LIMIT_MAX])
3170 continue;
3171
3172 if (nla_get_u32(tb_limit[NL80211_IFACE_LIMIT_MAX]) < 2)
3173 continue;
3174
3175 nla_for_each_nested(mode, tb_limit[NL80211_IFACE_LIMIT_TYPES], mode_rem) {
3176 if (nla_type(mode) == NL80211_IFTYPE_AP)
3177 *ret = 1;
3178 }
3179 }
3180 }
3181
3182 return NL_SKIP;
3183 }
3184
3185 static int nl80211_get_mbssid_support(const char *ifname, int *buf)
3186 {
3187 if (nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0,
3188 nl80211_get_ifcomb_cb, buf))
3189 return -1;
3190
3191 return 0;
3192 }
3193
3194 static int nl80211_hardware_id_from_fdt(struct iwinfo_hardware_id *id, const char *ifname)
3195 {
3196 char *phy, compat[64], path[PATH_MAX];
3197 int i;
3198
3199 /* Try to determine the phy name from the given interface */
3200 phy = nl80211_ifname2phy(ifname);
3201
3202 snprintf(path, sizeof(path), "/sys/class/%s/%s/device/of_node/compatible",
3203 phy ? "ieee80211" : "net", phy ? phy : ifname);
3204
3205 if (nl80211_readstr(path, compat, sizeof(compat)) <= 0)
3206 return -1;
3207
3208 if (!strcmp(compat, "qcom,ipq4019-wifi")) {
3209 id->vendor_id = 0x168c;
3210 id->device_id = 0x003c;
3211 id->subsystem_vendor_id = 0x168c;
3212 id->subsystem_device_id = 0x4019;
3213 }
3214
3215 return (id->vendor_id && id->device_id) ? 0 : -1;
3216 }
3217
3218
3219 static int nl80211_get_hardware_id(const char *ifname, char *buf)
3220 {
3221 struct iwinfo_hardware_id *id = (struct iwinfo_hardware_id *)buf;
3222 char *phy, num[8], path[PATH_MAX];
3223 int i;
3224
3225 struct { const char *path; uint16_t *dest; } lookup[] = {
3226 { "vendor", &id->vendor_id },
3227 { "device", &id->device_id },
3228 { "subsystem_vendor", &id->subsystem_vendor_id },
3229 { "subsystem_device", &id->subsystem_device_id }
3230 };
3231
3232 memset(id, 0, sizeof(*id));
3233
3234 /* Try to determine the phy name from the given interface */
3235 phy = nl80211_ifname2phy(ifname);
3236
3237 for (i = 0; i < ARRAY_SIZE(lookup); i++)
3238 {
3239 snprintf(path, sizeof(path), "/sys/class/%s/%s/device/%s",
3240 phy ? "ieee80211" : "net",
3241 phy ? phy : ifname, lookup[i].path);
3242
3243 if (nl80211_readstr(path, num, sizeof(num)) > 0)
3244 *lookup[i].dest = strtoul(num, NULL, 16);
3245 }
3246
3247 /* Failed to obtain hardware IDs, try FDT */
3248 if (id->vendor_id == 0 || id->device_id == 0)
3249 if (!nl80211_hardware_id_from_fdt(id, ifname))
3250 return 0;
3251
3252 /* Failed to obtain hardware IDs, search board config */
3253 if (id->vendor_id == 0 || id->device_id == 0)
3254 return iwinfo_hardware_id_from_mtd(id);
3255
3256 return 0;
3257 }
3258
3259 static const struct iwinfo_hardware_entry *
3260 nl80211_get_hardware_entry(const char *ifname)
3261 {
3262 struct iwinfo_hardware_id id;
3263
3264 if (nl80211_get_hardware_id(ifname, (char *)&id))
3265 return NULL;
3266
3267 return iwinfo_hardware(&id);
3268 }
3269
3270 static int nl80211_get_hardware_name(const char *ifname, char *buf)
3271 {
3272 const struct iwinfo_hardware_entry *hw;
3273
3274 if (!(hw = nl80211_get_hardware_entry(ifname)))
3275 sprintf(buf, "Generic MAC80211");
3276 else
3277 sprintf(buf, "%s %s", hw->vendor_name, hw->device_name);
3278
3279 return 0;
3280 }
3281
3282 static int nl80211_get_txpower_offset(const char *ifname, int *buf)
3283 {
3284 const struct iwinfo_hardware_entry *hw;
3285
3286 if (!(hw = nl80211_get_hardware_entry(ifname)))
3287 return -1;
3288
3289 *buf = hw->txpower_offset;
3290 return 0;
3291 }
3292
3293 static int nl80211_get_frequency_offset(const char *ifname, int *buf)
3294 {
3295 const struct iwinfo_hardware_entry *hw;
3296
3297 if (!(hw = nl80211_get_hardware_entry(ifname)))
3298 return -1;
3299
3300 *buf = hw->frequency_offset;
3301 return 0;
3302 }
3303
3304 static int nl80211_lookup_phyname(const char *section, char *buf)
3305 {
3306 int idx;
3307
3308 if ((idx = nl80211_phy_idx_from_uci(section)) < 0)
3309 return -1;
3310
3311 sprintf(buf, "phy%d", idx);
3312 return 0;
3313 }
3314
3315 const struct iwinfo_ops nl80211_ops = {
3316 .name = "nl80211",
3317 .probe = nl80211_probe,
3318 .channel = nl80211_get_channel,
3319 .frequency = nl80211_get_frequency,
3320 .frequency_offset = nl80211_get_frequency_offset,
3321 .txpower = nl80211_get_txpower,
3322 .txpower_offset = nl80211_get_txpower_offset,
3323 .bitrate = nl80211_get_bitrate,
3324 .signal = nl80211_get_signal,
3325 .noise = nl80211_get_noise,
3326 .quality = nl80211_get_quality,
3327 .quality_max = nl80211_get_quality_max,
3328 .mbssid_support = nl80211_get_mbssid_support,
3329 .hwmodelist = nl80211_get_hwmodelist,
3330 .htmodelist = nl80211_get_htmodelist,
3331 .htmode = nl80211_get_htmode,
3332 .mode = nl80211_get_mode,
3333 .ssid = nl80211_get_ssid,
3334 .bssid = nl80211_get_bssid,
3335 .country = nl80211_get_country,
3336 .hardware_id = nl80211_get_hardware_id,
3337 .hardware_name = nl80211_get_hardware_name,
3338 .encryption = nl80211_get_encryption,
3339 .phyname = nl80211_get_phyname,
3340 .assoclist = nl80211_get_assoclist,
3341 .txpwrlist = nl80211_get_txpwrlist,
3342 .scanlist = nl80211_get_scanlist,
3343 .freqlist = nl80211_get_freqlist,
3344 .countrylist = nl80211_get_countrylist,
3345 .survey = nl80211_get_survey,
3346 .lookup_phy = nl80211_lookup_phyname,
3347 .close = nl80211_close,
3348 .center_chan1 = nl80211_get_center_chan1,
3349 .center_chan2 = nl80211_get_center_chan2
3350 };
Library for accessing wireless device drivers