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iwinfo: add basic IEEE 802.11ax support
[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 { "GCMP", IWINFO_CIPHER_GCMP }
1659 };
1660
1661 static void parse_wpa_ciphers(const char *str, uint16_t *ciphers)
1662 {
1663 int i;
1664 size_t l;
1665 const char *m, *p, *q, *sep = " \t\n,-+/";
1666
1667 for (p = str; *p; )
1668 {
1669 q = p;
1670
1671 for (i = 0; i < ARRAY_SIZE(wpa_cipher_strings); i++)
1672 {
1673 m = wpa_cipher_strings[i].match;
1674 l = strlen(m);
1675
1676 if (!strncmp(q, m, l) && (!q[l] || strchr(sep, q[l])))
1677 {
1678 *ciphers |= wpa_cipher_strings[i].cipher;
1679
1680 q += l;
1681 break;
1682 }
1683 }
1684
1685 if (q == p)
1686 q += strcspn(q, sep);
1687
1688 p = q + strspn(q, sep);
1689 }
1690 }
1691
1692 static int nl80211_get_encryption(const char *ifname, char *buf)
1693 {
1694 char *p;
1695 int opmode;
1696 uint8_t wpa_version = 0;
1697 char wpa[2], wpa_key_mgmt[64], wpa_pairwise[16], wpa_groupwise[16];
1698 char auth_algs[2], wep_key0[27], wep_key1[27], wep_key2[27], wep_key3[27];
1699 char mode[16];
1700
1701 struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf;
1702
1703 /* WPA supplicant */
1704 if (nl80211_wpactl_query(ifname,
1705 "pairwise_cipher", wpa_pairwise, sizeof(wpa_pairwise),
1706 "group_cipher", wpa_groupwise, sizeof(wpa_groupwise),
1707 "key_mgmt", wpa_key_mgmt, sizeof(wpa_key_mgmt),
1708 "mode", mode, sizeof(mode)))
1709 {
1710 /* WEP or Open */
1711 if (!strcmp(wpa_key_mgmt, "NONE"))
1712 {
1713 parse_wpa_ciphers(wpa_pairwise, &c->pair_ciphers);
1714 parse_wpa_ciphers(wpa_groupwise, &c->group_ciphers);
1715
1716 if (c->pair_ciphers != 0 && c->pair_ciphers != IWINFO_CIPHER_NONE) {
1717 c->enabled = 1;
1718 c->auth_suites = IWINFO_KMGMT_NONE;
1719 c->auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
1720 }
1721 else {
1722 c->pair_ciphers = 0;
1723 c->group_ciphers = 0;
1724 }
1725 }
1726
1727 /* MESH with SAE */
1728 else if (!strcmp(mode, "mesh") && !strcmp(wpa_key_mgmt, "UNKNOWN"))
1729 {
1730 c->enabled = 1;
1731 c->wpa_version = 4;
1732 c->auth_suites = IWINFO_KMGMT_SAE;
1733 c->pair_ciphers = IWINFO_CIPHER_CCMP;
1734 c->group_ciphers = IWINFO_CIPHER_CCMP;
1735 }
1736
1737 /* WPA */
1738 else
1739 {
1740 parse_wpa_ciphers(wpa_pairwise, &c->pair_ciphers);
1741 parse_wpa_ciphers(wpa_groupwise, &c->group_ciphers);
1742
1743 p = wpa_key_mgmt;
1744
1745 if (!strncmp(p, "WPA2-", 5) || !strncmp(p, "WPA2/", 5))
1746 {
1747 p += 5;
1748 wpa_version = 2;
1749 }
1750 else if (!strncmp(p, "WPA-", 4))
1751 {
1752 p += 4;
1753 wpa_version = 1;
1754 }
1755
1756 parse_wpa_suites(p, wpa_version, &c->wpa_version, &c->auth_suites);
1757
1758 c->enabled = !!(c->wpa_version && c->auth_suites);
1759 }
1760
1761 return 0;
1762 }
1763
1764 /* Hostapd */
1765 else if (nl80211_hostapd_query(ifname,
1766 "wpa", wpa, sizeof(wpa),
1767 "wpa_key_mgmt", wpa_key_mgmt, sizeof(wpa_key_mgmt),
1768 "wpa_pairwise", wpa_pairwise, sizeof(wpa_pairwise),
1769 "auth_algs", auth_algs, sizeof(auth_algs),
1770 "wep_key0", wep_key0, sizeof(wep_key0),
1771 "wep_key1", wep_key1, sizeof(wep_key1),
1772 "wep_key2", wep_key2, sizeof(wep_key2),
1773 "wep_key3", wep_key3, sizeof(wep_key3)))
1774 {
1775 c->wpa_version = 0;
1776
1777 if (wpa_key_mgmt[0])
1778 {
1779 for (p = strtok(wpa_key_mgmt, " \t"); p != NULL; p = strtok(NULL, " \t"))
1780 {
1781 if (!strncmp(p, "WPA-", 4))
1782 p += 4;
1783
1784 parse_wpa_suites(p, atoi(wpa), &c->wpa_version, &c->auth_suites);
1785 }
1786
1787 c->enabled = c->wpa_version ? 1 : 0;
1788 }
1789
1790 if (wpa_pairwise[0])
1791 parse_wpa_ciphers(wpa_pairwise, &c->pair_ciphers);
1792
1793 if (auth_algs[0])
1794 {
1795 switch (atoi(auth_algs))
1796 {
1797 case 1:
1798 c->auth_algs |= IWINFO_AUTH_OPEN;
1799 break;
1800
1801 case 2:
1802 c->auth_algs |= IWINFO_AUTH_SHARED;
1803 break;
1804
1805 case 3:
1806 c->auth_algs |= IWINFO_AUTH_OPEN;
1807 c->auth_algs |= IWINFO_AUTH_SHARED;
1808 break;
1809 }
1810
1811 c->pair_ciphers |= nl80211_check_wepkey(wep_key0);
1812 c->pair_ciphers |= nl80211_check_wepkey(wep_key1);
1813 c->pair_ciphers |= nl80211_check_wepkey(wep_key2);
1814 c->pair_ciphers |= nl80211_check_wepkey(wep_key3);
1815
1816 c->enabled = (c->auth_algs && c->pair_ciphers) ? 1 : 0;
1817 }
1818
1819 c->group_ciphers = c->pair_ciphers;
1820
1821 return 0;
1822 }
1823
1824 /* Ad-Hoc or Mesh interfaces without wpa_supplicant are open */
1825 else if (!nl80211_get_mode(ifname, &opmode) &&
1826 (opmode == IWINFO_OPMODE_ADHOC ||
1827 opmode == IWINFO_OPMODE_MESHPOINT))
1828 {
1829 c->enabled = 0;
1830
1831 return 0;
1832 }
1833
1834
1835 return -1;
1836 }
1837
1838 static int nl80211_get_phyname(const char *ifname, char *buf)
1839 {
1840 const char *name;
1841
1842 name = nl80211_ifname2phy(ifname);
1843
1844 if (name)
1845 {
1846 strcpy(buf, name);
1847 return 0;
1848 }
1849 else if ((name = nl80211_phy2ifname(ifname)) != NULL)
1850 {
1851 name = nl80211_ifname2phy(name);
1852
1853 if (name)
1854 {
1855 strcpy(buf, ifname);
1856 return 0;
1857 }
1858 }
1859
1860 return -1;
1861 }
1862
1863
1864 static void nl80211_parse_rateinfo(struct nlattr **ri,
1865 struct iwinfo_rate_entry *re)
1866 {
1867 if (ri[NL80211_RATE_INFO_BITRATE32])
1868 re->rate = nla_get_u32(ri[NL80211_RATE_INFO_BITRATE32]) * 100;
1869 else if (ri[NL80211_RATE_INFO_BITRATE])
1870 re->rate = nla_get_u16(ri[NL80211_RATE_INFO_BITRATE]) * 100;
1871
1872 if (ri[NL80211_RATE_INFO_VHT_MCS])
1873 {
1874 re->is_vht = 1;
1875 re->mcs = nla_get_u8(ri[NL80211_RATE_INFO_VHT_MCS]);
1876
1877 if (ri[NL80211_RATE_INFO_VHT_NSS])
1878 re->nss = nla_get_u8(ri[NL80211_RATE_INFO_VHT_NSS]);
1879 }
1880 else if (ri[NL80211_RATE_INFO_MCS])
1881 {
1882 re->is_ht = 1;
1883 re->mcs = nla_get_u8(ri[NL80211_RATE_INFO_MCS]);
1884 }
1885
1886 if (ri[NL80211_RATE_INFO_5_MHZ_WIDTH])
1887 re->mhz = 5;
1888 else if (ri[NL80211_RATE_INFO_10_MHZ_WIDTH])
1889 re->mhz = 10;
1890 else if (ri[NL80211_RATE_INFO_40_MHZ_WIDTH])
1891 re->mhz = 40;
1892 else if (ri[NL80211_RATE_INFO_80_MHZ_WIDTH])
1893 re->mhz = 80;
1894 else if (ri[NL80211_RATE_INFO_80P80_MHZ_WIDTH] ||
1895 ri[NL80211_RATE_INFO_160_MHZ_WIDTH])
1896 re->mhz = 160;
1897 else
1898 re->mhz = 20;
1899
1900 if (ri[NL80211_RATE_INFO_SHORT_GI])
1901 re->is_short_gi = 1;
1902
1903 re->is_40mhz = (re->mhz == 40);
1904 }
1905
1906 static int nl80211_get_survey_cb(struct nl_msg *msg, void *arg)
1907 {
1908 struct nl80211_array_buf *arr = arg;
1909 struct iwinfo_survey_entry *e = arr->buf;
1910 struct nlattr **attr = nl80211_parse(msg);
1911 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1912 int rc;
1913
1914 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1915 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1916 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1917 [NL80211_SURVEY_INFO_TIME] = { .type = NLA_U64 },
1918 [NL80211_SURVEY_INFO_TIME_BUSY] = { .type = NLA_U64 },
1919 [NL80211_SURVEY_INFO_TIME_EXT_BUSY] = { .type = NLA_U64 },
1920 [NL80211_SURVEY_INFO_TIME_RX] = { .type = NLA_U64 },
1921 [NL80211_SURVEY_INFO_TIME_TX] = { .type = NLA_U64 },
1922 };
1923
1924 rc = nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1925 attr[NL80211_ATTR_SURVEY_INFO],
1926 survey_policy);
1927 if (rc)
1928 return NL_SKIP;
1929
1930 /* advance to end of array */
1931 e += arr->count;
1932 memset(e, 0, sizeof(*e));
1933
1934 if (sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1935 e->mhz = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
1936
1937 if (sinfo[NL80211_SURVEY_INFO_NOISE])
1938 e->noise = nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1939
1940 if (sinfo[NL80211_SURVEY_INFO_TIME])
1941 e->active_time = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME]);
1942
1943 if (sinfo[NL80211_SURVEY_INFO_TIME_BUSY])
1944 e->busy_time = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_BUSY]);
1945
1946 if (sinfo[NL80211_SURVEY_INFO_TIME_EXT_BUSY])
1947 e->busy_time_ext = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_EXT_BUSY]);
1948
1949 if (sinfo[NL80211_SURVEY_INFO_TIME_RX])
1950 e->rxtime = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_RX]);
1951
1952 if (sinfo[NL80211_SURVEY_INFO_TIME_TX])
1953 e->txtime = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_TX]);
1954
1955 arr->count++;
1956 return NL_SKIP;
1957 }
1958
1959
1960 static void plink_state_to_str(char *dst, unsigned state)
1961 {
1962 switch (state) {
1963 case NL80211_PLINK_LISTEN:
1964 strcpy(dst, "LISTEN");
1965 break;
1966 case NL80211_PLINK_OPN_SNT:
1967 strcpy(dst, "OPN_SNT");
1968 break;
1969 case NL80211_PLINK_OPN_RCVD:
1970 strcpy(dst, "OPN_RCVD");
1971 break;
1972 case NL80211_PLINK_CNF_RCVD:
1973 strcpy(dst, "CNF_RCVD");
1974 break;
1975 case NL80211_PLINK_ESTAB:
1976 strcpy(dst, "ESTAB");
1977 break;
1978 case NL80211_PLINK_HOLDING:
1979 strcpy(dst, "HOLDING");
1980 break;
1981 case NL80211_PLINK_BLOCKED:
1982 strcpy(dst, "BLOCKED");
1983 break;
1984 default:
1985 strcpy(dst, "UNKNOWN");
1986 break;
1987 }
1988 }
1989
1990 static void power_mode_to_str(char *dst, struct nlattr *a)
1991 {
1992 enum nl80211_mesh_power_mode pm = nla_get_u32(a);
1993
1994 switch (pm) {
1995 case NL80211_MESH_POWER_ACTIVE:
1996 strcpy(dst, "ACTIVE");
1997 break;
1998 case NL80211_MESH_POWER_LIGHT_SLEEP:
1999 strcpy(dst, "LIGHT SLEEP");
2000 break;
2001 case NL80211_MESH_POWER_DEEP_SLEEP:
2002 strcpy(dst, "DEEP SLEEP");
2003 break;
2004 default:
2005 strcpy(dst, "UNKNOWN");
2006 break;
2007 }
2008 }
2009
2010 static int nl80211_get_assoclist_cb(struct nl_msg *msg, void *arg)
2011 {
2012 struct nl80211_array_buf *arr = arg;
2013 struct iwinfo_assoclist_entry *e = arr->buf;
2014 struct nlattr **attr = nl80211_parse(msg);
2015 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
2016 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
2017 struct nl80211_sta_flag_update *sta_flags;
2018
2019 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
2020 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
2021 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
2022 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
2023 [NL80211_STA_INFO_RX_BITRATE] = { .type = NLA_NESTED },
2024 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
2025 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
2026 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
2027 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
2028 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
2029 [NL80211_STA_INFO_TX_RETRIES] = { .type = NLA_U32 },
2030 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
2031 [NL80211_STA_INFO_CONNECTED_TIME]= { .type = NLA_U32 },
2032 [NL80211_STA_INFO_RX_DROP_MISC] = { .type = NLA_U64 },
2033 [NL80211_STA_INFO_T_OFFSET] = { .type = NLA_U64 },
2034 [NL80211_STA_INFO_STA_FLAGS] =
2035 { .minlen = sizeof(struct nl80211_sta_flag_update) },
2036 [NL80211_STA_INFO_EXPECTED_THROUGHPUT] = { .type = NLA_U32 },
2037 /* mesh */
2038 [NL80211_STA_INFO_LLID] = { .type = NLA_U16 },
2039 [NL80211_STA_INFO_PLID] = { .type = NLA_U16 },
2040 [NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 },
2041 [NL80211_STA_INFO_LOCAL_PM] = { .type = NLA_U32 },
2042 [NL80211_STA_INFO_PEER_PM] = { .type = NLA_U32 },
2043 [NL80211_STA_INFO_NONPEER_PM] = { .type = NLA_U32 },
2044 };
2045
2046 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
2047 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
2048 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
2049 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
2050 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
2051 };
2052
2053 /* advance to end of array */
2054 e += arr->count;
2055 memset(e, 0, sizeof(*e));
2056
2057 if (attr[NL80211_ATTR_MAC])
2058 memcpy(e->mac, nla_data(attr[NL80211_ATTR_MAC]), 6);
2059
2060 if (attr[NL80211_ATTR_STA_INFO] &&
2061 !nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
2062 attr[NL80211_ATTR_STA_INFO], stats_policy))
2063 {
2064 if (sinfo[NL80211_STA_INFO_SIGNAL])
2065 e->signal = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
2066
2067 if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
2068 e->signal_avg = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
2069
2070 if (sinfo[NL80211_STA_INFO_INACTIVE_TIME])
2071 e->inactive = nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]);
2072
2073 if (sinfo[NL80211_STA_INFO_CONNECTED_TIME])
2074 e->connected_time = nla_get_u32(sinfo[NL80211_STA_INFO_CONNECTED_TIME]);
2075
2076 if (sinfo[NL80211_STA_INFO_RX_PACKETS])
2077 e->rx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS]);
2078
2079 if (sinfo[NL80211_STA_INFO_TX_PACKETS])
2080 e->tx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS]);
2081
2082 if (sinfo[NL80211_STA_INFO_RX_BITRATE] &&
2083 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
2084 sinfo[NL80211_STA_INFO_RX_BITRATE], rate_policy))
2085 nl80211_parse_rateinfo(rinfo, &e->rx_rate);
2086
2087 if (sinfo[NL80211_STA_INFO_TX_BITRATE] &&
2088 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
2089 sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy))
2090 nl80211_parse_rateinfo(rinfo, &e->tx_rate);
2091
2092 if (sinfo[NL80211_STA_INFO_RX_BYTES])
2093 e->rx_bytes = nla_get_u32(sinfo[NL80211_STA_INFO_RX_BYTES]);
2094
2095 if (sinfo[NL80211_STA_INFO_TX_BYTES])
2096 e->tx_bytes = nla_get_u32(sinfo[NL80211_STA_INFO_TX_BYTES]);
2097
2098 if (sinfo[NL80211_STA_INFO_TX_RETRIES])
2099 e->tx_retries = nla_get_u32(sinfo[NL80211_STA_INFO_TX_RETRIES]);
2100
2101 if (sinfo[NL80211_STA_INFO_TX_FAILED])
2102 e->tx_failed = nla_get_u32(sinfo[NL80211_STA_INFO_TX_FAILED]);
2103
2104 if (sinfo[NL80211_STA_INFO_T_OFFSET])
2105 e->t_offset = nla_get_u64(sinfo[NL80211_STA_INFO_T_OFFSET]);
2106
2107 if (sinfo[NL80211_STA_INFO_RX_DROP_MISC])
2108 e->rx_drop_misc = nla_get_u64(sinfo[NL80211_STA_INFO_RX_DROP_MISC]);
2109
2110 if (sinfo[NL80211_STA_INFO_EXPECTED_THROUGHPUT])
2111 e->thr = nla_get_u32(sinfo[NL80211_STA_INFO_EXPECTED_THROUGHPUT]);
2112
2113 /* mesh */
2114 if (sinfo[NL80211_STA_INFO_LLID])
2115 e->llid = nla_get_u16(sinfo[NL80211_STA_INFO_LLID]);
2116
2117 if (sinfo[NL80211_STA_INFO_PLID])
2118 e->plid = nla_get_u16(sinfo[NL80211_STA_INFO_PLID]);
2119
2120 if (sinfo[NL80211_STA_INFO_PLINK_STATE])
2121 plink_state_to_str(e->plink_state,
2122 nla_get_u8(sinfo[NL80211_STA_INFO_PLINK_STATE]));
2123
2124 if (sinfo[NL80211_STA_INFO_LOCAL_PM])
2125 power_mode_to_str(e->local_ps, sinfo[NL80211_STA_INFO_LOCAL_PM]);
2126 if (sinfo[NL80211_STA_INFO_PEER_PM])
2127 power_mode_to_str(e->peer_ps, sinfo[NL80211_STA_INFO_PEER_PM]);
2128 if (sinfo[NL80211_STA_INFO_NONPEER_PM])
2129 power_mode_to_str(e->nonpeer_ps, sinfo[NL80211_STA_INFO_NONPEER_PM]);
2130
2131 /* Station flags */
2132 if (sinfo[NL80211_STA_INFO_STA_FLAGS])
2133 {
2134 sta_flags = (struct nl80211_sta_flag_update *)
2135 nla_data(sinfo[NL80211_STA_INFO_STA_FLAGS]);
2136
2137 if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
2138 sta_flags->set & BIT(NL80211_STA_FLAG_AUTHORIZED))
2139 e->is_authorized = 1;
2140
2141 if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
2142 sta_flags->set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
2143 e->is_authenticated = 1;
2144
2145 if (sta_flags->mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) &&
2146 sta_flags->set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
2147 e->is_preamble_short = 1;
2148
2149 if (sta_flags->mask & BIT(NL80211_STA_FLAG_WME) &&
2150 sta_flags->set & BIT(NL80211_STA_FLAG_WME))
2151 e->is_wme = 1;
2152
2153 if (sta_flags->mask & BIT(NL80211_STA_FLAG_MFP) &&
2154 sta_flags->set & BIT(NL80211_STA_FLAG_MFP))
2155 e->is_mfp = 1;
2156
2157 if (sta_flags->mask & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
2158 sta_flags->set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2159 e->is_tdls = 1;
2160 }
2161 }
2162
2163 e->noise = 0; /* filled in by caller */
2164 arr->count++;
2165
2166 return NL_SKIP;
2167 }
2168
2169 static int nl80211_get_survey(const char *ifname, char *buf, int *len)
2170 {
2171 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
2172 int rc;
2173
2174 rc = nl80211_request(ifname, NL80211_CMD_GET_SURVEY,
2175 NLM_F_DUMP, nl80211_get_survey_cb, &arr);
2176 if (!rc)
2177 *len = (arr.count * sizeof(struct iwinfo_survey_entry));
2178 else
2179 *len = 0;
2180
2181 return 0;
2182 }
2183
2184 static int nl80211_get_assoclist(const char *ifname, char *buf, int *len)
2185 {
2186 DIR *d;
2187 int i, noise = 0;
2188 struct dirent *de;
2189 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
2190 struct iwinfo_assoclist_entry *e;
2191
2192 if ((d = opendir("/sys/class/net")) != NULL)
2193 {
2194 while ((de = readdir(d)) != NULL)
2195 {
2196 if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
2197 (!de->d_name[strlen(ifname)] ||
2198 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
2199 {
2200 nl80211_request(de->d_name, NL80211_CMD_GET_STATION,
2201 NLM_F_DUMP, nl80211_get_assoclist_cb, &arr);
2202 }
2203 }
2204
2205 closedir(d);
2206
2207 if (!nl80211_get_noise(ifname, &noise))
2208 for (i = 0, e = arr.buf; i < arr.count; i++, e++)
2209 e->noise = noise;
2210
2211 *len = (arr.count * sizeof(struct iwinfo_assoclist_entry));
2212 return 0;
2213 }
2214
2215 return -1;
2216 }
2217
2218 static int nl80211_get_txpwrlist_cb(struct nl_msg *msg, void *arg)
2219 {
2220 int *dbm_max = arg;
2221 int ch_cur, ch_cmp, bands_remain, freqs_remain;
2222
2223 struct nlattr **attr = nl80211_parse(msg);
2224 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
2225 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
2226 struct nlattr *band, *freq;
2227
2228 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2229 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2230 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2231 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2232 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2233 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2234 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2235 };
2236
2237 ch_cur = *dbm_max; /* value int* is initialized with channel by caller */
2238 *dbm_max = -1;
2239
2240 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
2241 {
2242 nla_parse(bands, NL80211_BAND_ATTR_MAX, nla_data(band),
2243 nla_len(band), NULL);
2244
2245 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
2246 {
2247 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
2248 nla_data(freq), nla_len(freq), freq_policy);
2249
2250 ch_cmp = nl80211_freq2channel(nla_get_u32(
2251 freqs[NL80211_FREQUENCY_ATTR_FREQ]));
2252
2253 if ((!ch_cur || (ch_cmp == ch_cur)) &&
2254 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER])
2255 {
2256 *dbm_max = (int)(0.01 * nla_get_u32(
2257 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]));
2258
2259 break;
2260 }
2261 }
2262 }
2263
2264 return NL_SKIP;
2265 }
2266
2267 static int nl80211_get_txpwrlist(const char *ifname, char *buf, int *len)
2268 {
2269 int err, ch_cur;
2270 int dbm_max = -1, dbm_cur, dbm_cnt;
2271 struct nl80211_msg_conveyor *req;
2272 struct iwinfo_txpwrlist_entry entry;
2273
2274 if (nl80211_get_channel(ifname, &ch_cur))
2275 ch_cur = 0;
2276
2277 /* initialize the value pointer with channel for callback */
2278 dbm_max = ch_cur;
2279
2280 err = nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0,
2281 nl80211_get_txpwrlist_cb, &dbm_max);
2282
2283 if (!err)
2284 {
2285 for (dbm_cur = 0, dbm_cnt = 0;
2286 dbm_cur < dbm_max;
2287 dbm_cur++, dbm_cnt++)
2288 {
2289 entry.dbm = dbm_cur;
2290 entry.mw = iwinfo_dbm2mw(dbm_cur);
2291
2292 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
2293 }
2294
2295 entry.dbm = dbm_max;
2296 entry.mw = iwinfo_dbm2mw(dbm_max);
2297
2298 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
2299 dbm_cnt++;
2300
2301 *len = dbm_cnt * sizeof(entry);
2302 return 0;
2303 }
2304
2305 return -1;
2306 }
2307
2308 static void nl80211_get_scancrypto(char *spec, struct iwinfo_crypto_entry *c)
2309 {
2310 int wpa_version = 0;
2311 char *p, *q, *proto, *suites;
2312
2313 c->enabled = 0;
2314
2315 for (p = strtok_r(spec, "[]", &q); p; p = strtok_r(NULL, "[]", &q)) {
2316 if (!strcmp(p, "WEP")) {
2317 c->enabled = 1;
2318 c->auth_suites = IWINFO_KMGMT_NONE;
2319 c->auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
2320 c->pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
2321 break;
2322 }
2323
2324 proto = strtok(p, "-");
2325 suites = strtok(NULL, "]");
2326
2327 if (!proto || !suites)
2328 continue;
2329
2330 if (!strcmp(proto, "WPA2") || !strcmp(proto, "RSN"))
2331 wpa_version = 2;
2332 else if (!strcmp(proto, "WPA"))
2333 wpa_version = 1;
2334 else
2335 continue;
2336
2337 c->enabled = 1;
2338
2339 parse_wpa_suites(suites, wpa_version, &c->wpa_version, &c->auth_suites);
2340 parse_wpa_ciphers(suites, &c->pair_ciphers);
2341 }
2342 }
2343
2344
2345 struct nl80211_scanlist {
2346 struct iwinfo_scanlist_entry *e;
2347 int len;
2348 };
2349
2350
2351 static void nl80211_get_scanlist_ie(struct nlattr **bss,
2352 struct iwinfo_scanlist_entry *e)
2353 {
2354 int ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2355 unsigned char *ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2356 static unsigned char ms_oui[3] = { 0x00, 0x50, 0xf2 };
2357 int len;
2358
2359 while (ielen >= 2 && ielen >= ie[1])
2360 {
2361 switch (ie[0])
2362 {
2363 case 0: /* SSID */
2364 case 114: /* Mesh ID */
2365 if (e->ssid[0] == 0) {
2366 len = min(ie[1], IWINFO_ESSID_MAX_SIZE);
2367 memcpy(e->ssid, ie + 2, len);
2368 e->ssid[len] = 0;
2369 }
2370 break;
2371
2372 case 48: /* RSN */
2373 iwinfo_parse_rsn(&e->crypto, ie + 2, ie[1],
2374 IWINFO_CIPHER_CCMP, IWINFO_KMGMT_8021x);
2375 break;
2376
2377 case 221: /* Vendor */
2378 if (ie[1] >= 4 && !memcmp(ie + 2, ms_oui, 3) && ie[5] == 1)
2379 iwinfo_parse_rsn(&e->crypto, ie + 6, ie[1] - 4,
2380 IWINFO_CIPHER_TKIP, IWINFO_KMGMT_PSK);
2381 break;
2382 case 61: /* HT oeration */
2383 if (ie[1] >= 3) {
2384 e->ht_chan_info.primary_chan = ie[2];
2385 e->ht_chan_info.secondary_chan_off = ie[3] & 0x3;
2386 e->ht_chan_info.chan_width = (ie[4] & 0x4)>>2;
2387 }
2388 break;
2389 case 192: /* VHT operation */
2390 if (ie[1] >= 3) {
2391 e->vht_chan_info.chan_width = ie[2];
2392 e->vht_chan_info.center_chan_1 = ie[3];
2393 e->vht_chan_info.center_chan_2 = ie[4];
2394 }
2395 break;
2396 }
2397
2398 ielen -= ie[1] + 2;
2399 ie += ie[1] + 2;
2400 }
2401 }
2402
2403 static int nl80211_get_scanlist_cb(struct nl_msg *msg, void *arg)
2404 {
2405 int8_t rssi;
2406 uint16_t caps;
2407
2408 struct nl80211_scanlist *sl = arg;
2409 struct nlattr **tb = nl80211_parse(msg);
2410 struct nlattr *bss[NL80211_BSS_MAX + 1];
2411
2412 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2413 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2414 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2415 [NL80211_BSS_BSSID] = { 0 },
2416 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2417 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2418 [NL80211_BSS_INFORMATION_ELEMENTS] = { 0 },
2419 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2420 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2421 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2422 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2423 [NL80211_BSS_BEACON_IES] = { 0 },
2424 };
2425
2426 if (!tb[NL80211_ATTR_BSS] ||
2427 nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2428 bss_policy) ||
2429 !bss[NL80211_BSS_BSSID])
2430 {
2431 return NL_SKIP;
2432 }
2433
2434 if (bss[NL80211_BSS_CAPABILITY])
2435 caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2436 else
2437 caps = 0;
2438
2439 memset(sl->e, 0, sizeof(*sl->e));
2440 memcpy(sl->e->mac, nla_data(bss[NL80211_BSS_BSSID]), 6);
2441
2442 if (caps & (1<<1))
2443 sl->e->mode = IWINFO_OPMODE_ADHOC;
2444 else if (caps & (1<<0))
2445 sl->e->mode = IWINFO_OPMODE_MASTER;
2446 else
2447 sl->e->mode = IWINFO_OPMODE_MESHPOINT;
2448
2449 if (caps & (1<<4))
2450 sl->e->crypto.enabled = 1;
2451
2452 if (bss[NL80211_BSS_FREQUENCY])
2453 sl->e->channel = nl80211_freq2channel(nla_get_u32(
2454 bss[NL80211_BSS_FREQUENCY]));
2455
2456 if (bss[NL80211_BSS_INFORMATION_ELEMENTS])
2457 nl80211_get_scanlist_ie(bss, sl->e);
2458
2459 if (bss[NL80211_BSS_SIGNAL_MBM])
2460 {
2461 sl->e->signal =
2462 (uint8_t)((int32_t)nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]) / 100);
2463
2464 rssi = sl->e->signal - 0x100;
2465
2466 if (rssi < -110)
2467 rssi = -110;
2468 else if (rssi > -40)
2469 rssi = -40;
2470
2471 sl->e->quality = (rssi + 110);
2472 sl->e->quality_max = 70;
2473 }
2474
2475 if (sl->e->crypto.enabled && !sl->e->crypto.wpa_version)
2476 {
2477 sl->e->crypto.auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
2478 sl->e->crypto.pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
2479 }
2480
2481 sl->e++;
2482 sl->len++;
2483
2484 return NL_SKIP;
2485 }
2486
2487 static int nl80211_get_scanlist_nl(const char *ifname, char *buf, int *len)
2488 {
2489 struct nl80211_scanlist sl = { .e = (struct iwinfo_scanlist_entry *)buf };
2490
2491 if (nl80211_request(ifname, NL80211_CMD_TRIGGER_SCAN, 0, NULL, NULL))
2492 goto out;
2493
2494 if (nl80211_wait("nl80211", "scan",
2495 NL80211_CMD_NEW_SCAN_RESULTS, NL80211_CMD_SCAN_ABORTED))
2496 goto out;
2497
2498 if (nl80211_request(ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP,
2499 nl80211_get_scanlist_cb, &sl))
2500 goto out;
2501
2502 *len = sl.len * sizeof(struct iwinfo_scanlist_entry);
2503 return 0;
2504
2505 out:
2506 *len = 0;
2507 return -1;
2508 }
2509
2510 static int wpasupp_ssid_decode(const char *in, char *out, int outlen)
2511 {
2512 #define hex(x) \
2513 (((x) >= 'a') ? ((x) - 'a' + 10) : \
2514 (((x) >= 'A') ? ((x) - 'A' + 10) : ((x) - '0')))
2515
2516 int len = 0;
2517
2518 while (*in)
2519 {
2520 if (len + 1 >= outlen)
2521 break;
2522
2523 switch (*in)
2524 {
2525 case '\\':
2526 in++;
2527 switch (*in)
2528 {
2529 case 'n':
2530 out[len++] = '\n'; in++;
2531 break;
2532
2533 case 'r':
2534 out[len++] = '\r'; in++;
2535 break;
2536
2537 case 't':
2538 out[len++] = '\t'; in++;
2539 break;
2540
2541 case 'e':
2542 out[len++] = '\033'; in++;
2543 break;
2544
2545 case 'x':
2546 if (isxdigit(*(in+1)) && isxdigit(*(in+2)))
2547 out[len++] = hex(*(in+1)) * 16 + hex(*(in+2));
2548 in += 3;
2549 break;
2550
2551 default:
2552 out[len++] = *in++;
2553 break;
2554 }
2555 break;
2556
2557 default:
2558 out[len++] = *in++;
2559 break;
2560 }
2561 }
2562
2563 if (outlen > len)
2564 out[len] = '\0';
2565
2566 return len;
2567 }
2568
2569 static int nl80211_get_scanlist_wpactl(const char *ifname, char *buf, int *len)
2570 {
2571 int sock, qmax, rssi, tries, count = -1, ready = 0;
2572 char *pos, *line, *bssid, *freq, *signal, *flags, *ssid, reply[4096];
2573 struct sockaddr_un local = { 0 };
2574 struct iwinfo_scanlist_entry *e = (struct iwinfo_scanlist_entry *)buf;
2575
2576 sock = nl80211_wpactl_connect(ifname, &local);
2577
2578 if (sock < 0)
2579 return sock;
2580
2581 send(sock, "ATTACH", 6, 0);
2582 send(sock, "SCAN", 4, 0);
2583
2584 /*
2585 * wait for scan results:
2586 * nl80211_wpactl_recv() will use a timeout of 256ms and we need to scan
2587 * 72 channels at most. We'll also receive two "OK" messages acknowledging
2588 * the "ATTACH" and "SCAN" commands and the driver might need a bit extra
2589 * time to process the results, so try 72 + 2 + 1 times.
2590 */
2591 for (tries = 0; tries < 75; tries++)
2592 {
2593 if (nl80211_wpactl_recv(sock, reply, sizeof(reply)) <= 0)
2594 continue;
2595
2596 /* got an event notification */
2597 if (reply[0] == '<')
2598 {
2599 /* scan results are ready */
2600 if (strstr(reply, "CTRL-EVENT-SCAN-RESULTS"))
2601 {
2602 /* send "SCAN_RESULTS" command */
2603 ready = (send(sock, "SCAN_RESULTS", 12, 0) == 12);
2604 break;
2605 }
2606
2607 /* is another unrelated event, retry */
2608 tries--;
2609 }
2610
2611 /* scanning already in progress, keep awaiting results */
2612 else if (!strcmp(reply, "FAIL-BUSY\n"))
2613 {
2614 tries--;
2615 }
2616
2617 /* another failure, abort */
2618 else if (!strncmp(reply, "FAIL-", 5))
2619 {
2620 break;
2621 }
2622 }
2623
2624 /* receive and parse scan results if the wait above didn't time out */
2625 while (ready && nl80211_wpactl_recv(sock, reply, sizeof(reply)) > 0)
2626 {
2627 /* received an event notification, receive again */
2628 if (reply[0] == '<')
2629 continue;
2630
2631 nl80211_get_quality_max(ifname, &qmax);
2632
2633 for (line = strtok_r(reply, "\n", &pos);
2634 line != NULL;
2635 line = strtok_r(NULL, "\n", &pos))
2636 {
2637 /* skip header line */
2638 if (count < 0)
2639 {
2640 count++;
2641 continue;
2642 }
2643
2644 bssid = strtok(line, "\t");
2645 freq = strtok(NULL, "\t");
2646 signal = strtok(NULL, "\t");
2647 flags = strtok(NULL, "\t");
2648 ssid = strtok(NULL, "\n");
2649
2650 if (!bssid || !freq || !signal || !flags)
2651 continue;
2652
2653 /* BSSID */
2654 e->mac[0] = strtol(&bssid[0], NULL, 16);
2655 e->mac[1] = strtol(&bssid[3], NULL, 16);
2656 e->mac[2] = strtol(&bssid[6], NULL, 16);
2657 e->mac[3] = strtol(&bssid[9], NULL, 16);
2658 e->mac[4] = strtol(&bssid[12], NULL, 16);
2659 e->mac[5] = strtol(&bssid[15], NULL, 16);
2660
2661 /* SSID */
2662 if (ssid)
2663 wpasupp_ssid_decode(ssid, e->ssid, sizeof(e->ssid));
2664 else
2665 e->ssid[0] = 0;
2666
2667 /* Mode */
2668 if (strstr(flags, "[MESH]"))
2669 e->mode = IWINFO_OPMODE_MESHPOINT;
2670 else if (strstr(flags, "[IBSS]"))
2671 e->mode = IWINFO_OPMODE_ADHOC;
2672 else
2673 e->mode = IWINFO_OPMODE_MASTER;
2674
2675 /* Channel */
2676 e->channel = nl80211_freq2channel(atoi(freq));
2677
2678 /* Signal */
2679 rssi = atoi(signal);
2680 e->signal = rssi;
2681
2682 /* Quality */
2683 if (rssi < 0)
2684 {
2685 /* The cfg80211 wext compat layer assumes a signal range
2686 * of -110 dBm to -40 dBm, the quality value is derived
2687 * by adding 110 to the signal level */
2688 if (rssi < -110)
2689 rssi = -110;
2690 else if (rssi > -40)
2691 rssi = -40;
2692
2693 e->quality = (rssi + 110);
2694 }
2695 else
2696 {
2697 e->quality = rssi;
2698 }
2699
2700 /* Max. Quality */
2701 e->quality_max = qmax;
2702
2703 /* Crypto */
2704 nl80211_get_scancrypto(flags, &e->crypto);
2705
2706 count++;
2707 e++;
2708 }
2709
2710 *len = count * sizeof(struct iwinfo_scanlist_entry);
2711 break;
2712 }
2713
2714 close(sock);
2715 unlink(local.sun_path);
2716
2717 return (count >= 0) ? 0 : -1;
2718 }
2719
2720 static int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
2721 {
2722 char *res;
2723 int rv, mode;
2724
2725 *len = 0;
2726
2727 /* Got a radioX pseudo interface, find some interface on it or create one */
2728 if (!strncmp(ifname, "radio", 5))
2729 {
2730 /* Reuse existing interface */
2731 if ((res = nl80211_phy2ifname(ifname)) != NULL)
2732 {
2733 return nl80211_get_scanlist(res, buf, len);
2734 }
2735
2736 /* Need to spawn a temporary iface for scanning */
2737 else if ((res = nl80211_ifadd(ifname)) != NULL)
2738 {
2739 rv = nl80211_get_scanlist(res, buf, len);
2740 nl80211_ifdel(res);
2741 return rv;
2742 }
2743 }
2744
2745 /* WPA supplicant */
2746 if (!nl80211_get_scanlist_wpactl(ifname, buf, len))
2747 {
2748 return 0;
2749 }
2750
2751 /* station / ad-hoc / monitor scan */
2752 else if (!nl80211_get_mode(ifname, &mode) &&
2753 (mode == IWINFO_OPMODE_ADHOC ||
2754 mode == IWINFO_OPMODE_MASTER ||
2755 mode == IWINFO_OPMODE_CLIENT ||
2756 mode == IWINFO_OPMODE_MONITOR) &&
2757 iwinfo_ifup(ifname))
2758 {
2759 return nl80211_get_scanlist_nl(ifname, buf, len);
2760 }
2761
2762 /* AP scan */
2763 else
2764 {
2765 /* Got a temp interface, don't create yet another one */
2766 if (!strncmp(ifname, "tmp.", 4))
2767 {
2768 if (!iwinfo_ifup(ifname))
2769 return -1;
2770
2771 rv = nl80211_get_scanlist_nl(ifname, buf, len);
2772 iwinfo_ifdown(ifname);
2773 return rv;
2774 }
2775
2776 /* Spawn a new scan interface */
2777 else
2778 {
2779 if (!(res = nl80211_ifadd(ifname)))
2780 return -1;
2781
2782 iwinfo_ifmac(res);
2783
2784 /* if we can take the new interface up, the driver supports an
2785 * additional interface and there's no need to tear down the ap */
2786 if (iwinfo_ifup(res))
2787 {
2788 rv = nl80211_get_scanlist_nl(res, buf, len);
2789 iwinfo_ifdown(res);
2790 }
2791
2792 /* driver cannot create secondary interface, take down ap
2793 * during scan */
2794 else if (iwinfo_ifdown(ifname) && iwinfo_ifup(res))
2795 {
2796 rv = nl80211_get_scanlist_nl(res, buf, len);
2797 iwinfo_ifdown(res);
2798 iwinfo_ifup(ifname);
2799 nl80211_hostapd_hup(ifname);
2800 }
2801
2802 nl80211_ifdel(res);
2803 return rv;
2804 }
2805 }
2806
2807 return -1;
2808 }
2809
2810 static int nl80211_get_freqlist_cb(struct nl_msg *msg, void *arg)
2811 {
2812 int bands_remain, freqs_remain;
2813
2814 struct nl80211_array_buf *arr = arg;
2815 struct iwinfo_freqlist_entry *e;
2816
2817 struct nlattr **attr = nl80211_parse(msg);
2818 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
2819 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
2820 struct nlattr *band, *freq;
2821
2822 e = arr->buf;
2823 e += arr->count;
2824
2825 if (attr[NL80211_ATTR_WIPHY_BANDS]) {
2826 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
2827 {
2828 nla_parse(bands, NL80211_BAND_ATTR_MAX,
2829 nla_data(band), nla_len(band), NULL);
2830
2831 if (bands[NL80211_BAND_ATTR_FREQS]) {
2832 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
2833 {
2834 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
2835 nla_data(freq), nla_len(freq), NULL);
2836
2837 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ] ||
2838 freqs[NL80211_FREQUENCY_ATTR_DISABLED])
2839 continue;
2840
2841 e->mhz = nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]);
2842 e->channel = nl80211_freq2channel(e->mhz);
2843
2844 e->restricted = (
2845 freqs[NL80211_FREQUENCY_ATTR_NO_IR] &&
2846 !freqs[NL80211_FREQUENCY_ATTR_RADAR]
2847 ) ? 1 : 0;
2848
2849 if (freqs[NL80211_FREQUENCY_ATTR_NO_HT40_MINUS])
2850 e->flags |= IWINFO_FREQ_NO_HT40MINUS;
2851 if (freqs[NL80211_FREQUENCY_ATTR_NO_HT40_PLUS])
2852 e->flags |= IWINFO_FREQ_NO_HT40PLUS;
2853 if (freqs[NL80211_FREQUENCY_ATTR_NO_80MHZ])
2854 e->flags |= IWINFO_FREQ_NO_80MHZ;
2855 if (freqs[NL80211_FREQUENCY_ATTR_NO_160MHZ])
2856 e->flags |= IWINFO_FREQ_NO_160MHZ;
2857 if (freqs[NL80211_FREQUENCY_ATTR_NO_20MHZ])
2858 e->flags |= IWINFO_FREQ_NO_20MHZ;
2859 if (freqs[NL80211_FREQUENCY_ATTR_NO_10MHZ])
2860 e->flags |= IWINFO_FREQ_NO_10MHZ;
2861
2862 e++;
2863 arr->count++;
2864 }
2865 }
2866 }
2867 }
2868
2869 return NL_SKIP;
2870 }
2871
2872 static int nl80211_get_freqlist(const char *ifname, char *buf, int *len)
2873 {
2874 struct nl80211_msg_conveyor *cv;
2875 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
2876 uint32_t features = nl80211_get_protocol_features(ifname);
2877 int flags;
2878
2879 flags = features & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP ? NLM_F_DUMP : 0;
2880 cv = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, flags);
2881 if (!cv)
2882 goto out;
2883
2884 NLA_PUT_FLAG(cv->msg, NL80211_ATTR_SPLIT_WIPHY_DUMP);
2885 if (nl80211_send(cv, nl80211_get_freqlist_cb, &arr))
2886 goto out;
2887
2888 *len = arr.count * sizeof(struct iwinfo_freqlist_entry);
2889 return 0;
2890
2891 nla_put_failure:
2892 nl80211_free(cv);
2893 out:
2894 *len = 0;
2895 return -1;
2896 }
2897
2898 static int nl80211_get_country_cb(struct nl_msg *msg, void *arg)
2899 {
2900 char *buf = arg;
2901 struct nlattr **attr = nl80211_parse(msg);
2902
2903 if (attr[NL80211_ATTR_REG_ALPHA2])
2904 memcpy(buf, nla_data(attr[NL80211_ATTR_REG_ALPHA2]), 2);
2905 else
2906 buf[0] = 0;
2907
2908 return NL_SKIP;
2909 }
2910
2911 static int nl80211_get_country(const char *ifname, char *buf)
2912 {
2913 if (nl80211_request(ifname, NL80211_CMD_GET_REG, 0,
2914 nl80211_get_country_cb, buf))
2915 return -1;
2916
2917 return 0;
2918 }
2919
2920 static int nl80211_get_countrylist(const char *ifname, char *buf, int *len)
2921 {
2922 int count;
2923 struct iwinfo_country_entry *e = (struct iwinfo_country_entry *)buf;
2924 const struct iwinfo_iso3166_label *l;
2925
2926 for (l = IWINFO_ISO3166_NAMES, count = 0; l->iso3166; l++, e++, count++)
2927 {
2928 e->iso3166 = l->iso3166;
2929 e->ccode[0] = (l->iso3166 / 256);
2930 e->ccode[1] = (l->iso3166 % 256);
2931 e->ccode[2] = 0;
2932 }
2933
2934 *len = (count * sizeof(struct iwinfo_country_entry));
2935 return 0;
2936 }
2937
2938
2939 struct nl80211_modes
2940 {
2941 bool ok;
2942 uint32_t hw;
2943 uint32_t ht;
2944 };
2945
2946 static int nl80211_get_modelist_cb(struct nl_msg *msg, void *arg)
2947 {
2948 struct nl80211_modes *m = arg;
2949 int bands_remain, freqs_remain;
2950 uint16_t caps = 0;
2951 uint32_t vht_caps = 0;
2952 struct nlattr **attr = nl80211_parse(msg);
2953 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
2954 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
2955 struct nlattr *band, *freq;
2956
2957 if (attr[NL80211_ATTR_WIPHY_BANDS])
2958 {
2959 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
2960 {
2961 nla_parse(bands, NL80211_BAND_ATTR_MAX,
2962 nla_data(band), nla_len(band), NULL);
2963
2964 if (bands[NL80211_BAND_ATTR_HT_CAPA])
2965 caps = nla_get_u16(bands[NL80211_BAND_ATTR_HT_CAPA]);
2966
2967 /* Treat any nonzero capability as 11n */
2968 if (caps > 0)
2969 {
2970 m->hw |= IWINFO_80211_N;
2971 m->ht |= IWINFO_HTMODE_HT20;
2972
2973 if (caps & (1 << 1))
2974 m->ht |= IWINFO_HTMODE_HT40;
2975 }
2976
2977 if (bands[NL80211_BAND_ATTR_IFTYPE_DATA]) {
2978 struct nlattr *tb[NL80211_BAND_IFTYPE_ATTR_MAX + 1];
2979 uint16_t phy_cap[6] = { 0 };
2980 struct nlattr *nl_iftype;
2981 int rem_band;
2982 int len;
2983
2984 m->hw |= IWINFO_80211_AX;
2985 m->ht |= IWINFO_HTMODE_HE20;
2986
2987 nla_for_each_nested(nl_iftype, bands[NL80211_BAND_ATTR_IFTYPE_DATA], rem_band) {
2988 nla_parse(tb, NL80211_BAND_IFTYPE_ATTR_MAX,
2989 nla_data(nl_iftype), nla_len(nl_iftype), NULL);
2990 if (tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY]) {
2991 len = nla_len(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY]);
2992
2993 if (len > sizeof(phy_cap) - 1)
2994 len = sizeof(phy_cap) - 1;
2995 memcpy(&((__u8 *)phy_cap)[1],
2996 nla_data(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY]),
2997 len);
2998 }
2999
3000 if (phy_cap[0] & BIT(9))
3001 m->ht |= IWINFO_HTMODE_HE40;
3002 if (phy_cap[0] & BIT(10))
3003 m->ht |= IWINFO_HTMODE_HE40 | IWINFO_HTMODE_HE80;
3004 if (phy_cap[0] & BIT(11))
3005 m->ht |= IWINFO_HTMODE_HE160;
3006 if (phy_cap[0] & BIT(12))
3007 m->ht |= IWINFO_HTMODE_HE160 | IWINFO_HTMODE_HE80_80;
3008 }
3009 }
3010
3011 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS],
3012 freqs_remain)
3013 {
3014 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
3015 nla_data(freq), nla_len(freq), NULL);
3016
3017 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ])
3018 continue;
3019
3020 if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) < 2485)
3021 {
3022 m->hw |= IWINFO_80211_B;
3023 m->hw |= IWINFO_80211_G;
3024 }
3025 else if (bands[NL80211_BAND_ATTR_VHT_CAPA])
3026 {
3027 vht_caps = nla_get_u32(bands[NL80211_BAND_ATTR_VHT_CAPA]);
3028
3029 /* Treat any nonzero capability as 11ac */
3030 if (vht_caps > 0)
3031 {
3032 m->hw |= IWINFO_80211_AC;
3033 m->ht |= IWINFO_HTMODE_VHT20 | IWINFO_HTMODE_VHT40 | IWINFO_HTMODE_VHT80;
3034
3035 switch ((vht_caps >> 2) & 3)
3036 {
3037 case 2:
3038 m->ht |= IWINFO_HTMODE_VHT80_80;
3039 /* fall through */
3040
3041 case 1:
3042 m->ht |= IWINFO_HTMODE_VHT160;
3043 }
3044 }
3045 }
3046 else if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) >= 56160)
3047 {
3048 m->hw |= IWINFO_80211_AD;
3049 }
3050 else if (!(m->hw & IWINFO_80211_AC))
3051 {
3052 m->hw |= IWINFO_80211_A;
3053 }
3054 }
3055 }
3056
3057 m->ok = 1;
3058 }
3059
3060 return NL_SKIP;
3061 }
3062
3063 static int nl80211_get_hwmodelist(const char *ifname, int *buf)
3064 {
3065 struct nl80211_modes m = { 0 };
3066
3067 if (nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0,
3068 nl80211_get_modelist_cb, &m))
3069 goto out;
3070
3071 if (!m.ok)
3072 goto out;
3073
3074 *buf = m.hw;
3075 return 0;
3076
3077 out:
3078 *buf = 0;
3079 return -1;
3080 }
3081
3082 struct chan_info {
3083 int width;
3084 int mode;
3085 };
3086
3087 static int nl80211_get_htmode_cb(struct nl_msg *msg, void *arg)
3088 {
3089 struct nlattr **tb = nl80211_parse(msg);
3090 struct nlattr *cur;
3091 struct chan_info *chn = arg;
3092
3093 if ((cur = tb[NL80211_ATTR_CHANNEL_WIDTH]))
3094 chn->width = nla_get_u32(cur);
3095
3096 if ((cur = tb[NL80211_ATTR_BSS_HT_OPMODE]))
3097 chn->mode = nla_get_u32(cur);
3098
3099 return NL_SKIP;
3100 }
3101
3102 static int nl80211_get_htmode(const char *ifname, int *buf)
3103 {
3104 struct chan_info chn = { .width = 0, .mode = 0 };
3105 char *res;
3106 int err;
3107
3108 res = nl80211_phy2ifname(ifname);
3109 *buf = 0;
3110
3111 err = nl80211_request(res ? res : ifname,
3112 NL80211_CMD_GET_INTERFACE, 0,
3113 nl80211_get_htmode_cb, &chn);
3114 if (err)
3115 return -1;
3116
3117 switch (chn.width) {
3118 case NL80211_CHAN_WIDTH_20:
3119 if (chn.mode == -1)
3120 *buf = IWINFO_HTMODE_VHT20;
3121 else
3122 *buf = IWINFO_HTMODE_HT20;
3123 break;
3124 case NL80211_CHAN_WIDTH_40:
3125 if (chn.mode == -1)
3126 *buf = IWINFO_HTMODE_VHT40;
3127 else
3128 *buf = IWINFO_HTMODE_HT40;
3129 break;
3130 case NL80211_CHAN_WIDTH_80:
3131 *buf = IWINFO_HTMODE_VHT80;
3132 break;
3133 case NL80211_CHAN_WIDTH_80P80:
3134 *buf = IWINFO_HTMODE_VHT80_80;
3135 break;
3136 case NL80211_CHAN_WIDTH_160:
3137 *buf = IWINFO_HTMODE_VHT160;
3138 break;
3139 case NL80211_CHAN_WIDTH_5:
3140 case NL80211_CHAN_WIDTH_10:
3141 case NL80211_CHAN_WIDTH_20_NOHT:
3142 *buf = IWINFO_HTMODE_NOHT;
3143 break;
3144 default:
3145 return -1;
3146 }
3147
3148 return 0;
3149 }
3150
3151 static int nl80211_get_htmodelist(const char *ifname, int *buf)
3152 {
3153 struct nl80211_modes m = { 0 };
3154
3155 if (nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0,
3156 nl80211_get_modelist_cb, &m))
3157 goto out;
3158
3159 if (!m.ok)
3160 goto out;
3161
3162 *buf = m.ht;
3163 return 0;
3164
3165 out:
3166 *buf = 0;
3167 return -1;
3168 }
3169
3170
3171 static int nl80211_get_ifcomb_cb(struct nl_msg *msg, void *arg)
3172 {
3173 struct nlattr **attr = nl80211_parse(msg);
3174 struct nlattr *comb;
3175 int *ret = arg;
3176 int comb_rem, limit_rem, mode_rem;
3177
3178 *ret = 0;
3179 if (!attr[NL80211_ATTR_INTERFACE_COMBINATIONS])
3180 return NL_SKIP;
3181
3182 nla_for_each_nested(comb, attr[NL80211_ATTR_INTERFACE_COMBINATIONS], comb_rem)
3183 {
3184 static struct nla_policy iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
3185 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
3186 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
3187 };
3188 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB+1];
3189 static struct nla_policy iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
3190 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
3191 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
3192 };
3193 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT+1];
3194 struct nlattr *limit;
3195
3196 nla_parse_nested(tb_comb, NUM_NL80211_IFACE_COMB, comb, iface_combination_policy);
3197
3198 if (!tb_comb[NL80211_IFACE_COMB_LIMITS])
3199 continue;
3200
3201 nla_for_each_nested(limit, tb_comb[NL80211_IFACE_COMB_LIMITS], limit_rem)
3202 {
3203 struct nlattr *mode;
3204
3205 nla_parse_nested(tb_limit, NUM_NL80211_IFACE_LIMIT, limit, iface_limit_policy);
3206
3207 if (!tb_limit[NL80211_IFACE_LIMIT_TYPES] ||
3208 !tb_limit[NL80211_IFACE_LIMIT_MAX])
3209 continue;
3210
3211 if (nla_get_u32(tb_limit[NL80211_IFACE_LIMIT_MAX]) < 2)
3212 continue;
3213
3214 nla_for_each_nested(mode, tb_limit[NL80211_IFACE_LIMIT_TYPES], mode_rem) {
3215 if (nla_type(mode) == NL80211_IFTYPE_AP)
3216 *ret = 1;
3217 }
3218 }
3219 }
3220
3221 return NL_SKIP;
3222 }
3223
3224 static int nl80211_get_mbssid_support(const char *ifname, int *buf)
3225 {
3226 if (nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0,
3227 nl80211_get_ifcomb_cb, buf))
3228 return -1;
3229
3230 return 0;
3231 }
3232
3233 static int nl80211_hardware_id_from_fdt(struct iwinfo_hardware_id *id, const char *ifname)
3234 {
3235 char *phy, compat[64], path[PATH_MAX];
3236 int i;
3237
3238 /* Try to determine the phy name from the given interface */
3239 phy = nl80211_ifname2phy(ifname);
3240
3241 snprintf(path, sizeof(path), "/sys/class/%s/%s/device/of_node/compatible",
3242 phy ? "ieee80211" : "net", phy ? phy : ifname);
3243
3244 if (nl80211_readstr(path, compat, sizeof(compat)) <= 0)
3245 return -1;
3246
3247 if (!strcmp(compat, "qca,ar9130-wmac")) {
3248 id->vendor_id = 0x168c;
3249 id->device_id = 0x0029;
3250 id->subsystem_vendor_id = 0x168c;
3251 id->subsystem_device_id = 0x9130;
3252 } else if (!strcmp(compat, "qca,ar9330-wmac")) {
3253 id->vendor_id = 0x168c;
3254 id->device_id = 0x0030;
3255 id->subsystem_vendor_id = 0x168c;
3256 id->subsystem_device_id = 0x9330;
3257 } else if (!strcmp(compat, "qca,ar9340-wmac")) {
3258 id->vendor_id = 0x168c;
3259 id->device_id = 0x0030;
3260 id->subsystem_vendor_id = 0x168c;
3261 id->subsystem_device_id = 0x9340;
3262 } else if (!strcmp(compat, "qca,qca9530-wmac")) {
3263 id->vendor_id = 0x168c;
3264 id->device_id = 0x0033;
3265 id->subsystem_vendor_id = 0x168c;
3266 id->subsystem_device_id = 0x9530;
3267 } else if (!strcmp(compat, "qca,qca9550-wmac")) {
3268 id->vendor_id = 0x168c;
3269 id->device_id = 0x0033;
3270 id->subsystem_vendor_id = 0x168c;
3271 id->subsystem_device_id = 0x9550;
3272 } else if (!strcmp(compat, "qca,qca9560-wmac")) {
3273 id->vendor_id = 0x168c;
3274 id->device_id = 0x0033;
3275 id->subsystem_vendor_id = 0x168c;
3276 id->subsystem_device_id = 0x9560;
3277 } else if (!strcmp(compat, "qcom,ipq4019-wifi")) {
3278 id->vendor_id = 0x168c;
3279 id->device_id = 0x003c;
3280 id->subsystem_vendor_id = 0x168c;
3281 id->subsystem_device_id = 0x4019;
3282 } else if (!strcmp(compat, "mediatek,mt7622-wmac")) {
3283 id->vendor_id = 0x14c3;
3284 id->device_id = 0x7622;
3285 id->subsystem_vendor_id = 0x14c3;
3286 id->subsystem_device_id = 0x7622;
3287 }
3288 return (id->vendor_id && id->device_id) ? 0 : -1;
3289 }
3290
3291
3292 static int nl80211_get_hardware_id(const char *ifname, char *buf)
3293 {
3294 struct iwinfo_hardware_id *id = (struct iwinfo_hardware_id *)buf;
3295 char *phy, num[8], path[PATH_MAX];
3296 int i;
3297
3298 struct { const char *path; uint16_t *dest; } lookup[] = {
3299 { "vendor", &id->vendor_id },
3300 { "device", &id->device_id },
3301 { "subsystem_vendor", &id->subsystem_vendor_id },
3302 { "subsystem_device", &id->subsystem_device_id }
3303 };
3304
3305 memset(id, 0, sizeof(*id));
3306
3307 /* Try to determine the phy name from the given interface */
3308 phy = nl80211_ifname2phy(ifname);
3309
3310 for (i = 0; i < ARRAY_SIZE(lookup); i++)
3311 {
3312 snprintf(path, sizeof(path), "/sys/class/%s/%s/device/%s",
3313 phy ? "ieee80211" : "net",
3314 phy ? phy : ifname, lookup[i].path);
3315
3316 if (nl80211_readstr(path, num, sizeof(num)) > 0)
3317 *lookup[i].dest = strtoul(num, NULL, 16);
3318 }
3319
3320 /* Failed to obtain hardware IDs, try FDT */
3321 if (id->vendor_id == 0 || id->device_id == 0)
3322 if (!nl80211_hardware_id_from_fdt(id, ifname))
3323 return 0;
3324
3325 /* Failed to obtain hardware IDs, search board config */
3326 if (id->vendor_id == 0 || id->device_id == 0)
3327 return iwinfo_hardware_id_from_mtd(id);
3328
3329 return 0;
3330 }
3331
3332 static const struct iwinfo_hardware_entry *
3333 nl80211_get_hardware_entry(const char *ifname)
3334 {
3335 struct iwinfo_hardware_id id;
3336
3337 if (nl80211_get_hardware_id(ifname, (char *)&id))
3338 return NULL;
3339
3340 return iwinfo_hardware(&id);
3341 }
3342
3343 static int nl80211_get_hardware_name(const char *ifname, char *buf)
3344 {
3345 const struct iwinfo_hardware_entry *hw;
3346
3347 if (!(hw = nl80211_get_hardware_entry(ifname)))
3348 sprintf(buf, "Generic MAC80211");
3349 else
3350 sprintf(buf, "%s %s", hw->vendor_name, hw->device_name);
3351
3352 return 0;
3353 }
3354
3355 static int nl80211_get_txpower_offset(const char *ifname, int *buf)
3356 {
3357 const struct iwinfo_hardware_entry *hw;
3358
3359 if (!(hw = nl80211_get_hardware_entry(ifname)))
3360 return -1;
3361
3362 *buf = hw->txpower_offset;
3363 return 0;
3364 }
3365
3366 static int nl80211_get_frequency_offset(const char *ifname, int *buf)
3367 {
3368 const struct iwinfo_hardware_entry *hw;
3369
3370 if (!(hw = nl80211_get_hardware_entry(ifname)))
3371 return -1;
3372
3373 *buf = hw->frequency_offset;
3374 return 0;
3375 }
3376
3377 static int nl80211_lookup_phyname(const char *section, char *buf)
3378 {
3379 int idx;
3380
3381 if ((idx = nl80211_phy_idx_from_uci(section)) < 0)
3382 return -1;
3383
3384 sprintf(buf, "phy%d", idx);
3385 return 0;
3386 }
3387
3388 const struct iwinfo_ops nl80211_ops = {
3389 .name = "nl80211",
3390 .probe = nl80211_probe,
3391 .channel = nl80211_get_channel,
3392 .center_chan1 = nl80211_get_center_chan1,
3393 .center_chan2 = nl80211_get_center_chan2,
3394 .frequency = nl80211_get_frequency,
3395 .frequency_offset = nl80211_get_frequency_offset,
3396 .txpower = nl80211_get_txpower,
3397 .txpower_offset = nl80211_get_txpower_offset,
3398 .bitrate = nl80211_get_bitrate,
3399 .signal = nl80211_get_signal,
3400 .noise = nl80211_get_noise,
3401 .quality = nl80211_get_quality,
3402 .quality_max = nl80211_get_quality_max,
3403 .mbssid_support = nl80211_get_mbssid_support,
3404 .hwmodelist = nl80211_get_hwmodelist,
3405 .htmodelist = nl80211_get_htmodelist,
3406 .htmode = nl80211_get_htmode,
3407 .mode = nl80211_get_mode,
3408 .ssid = nl80211_get_ssid,
3409 .bssid = nl80211_get_bssid,
3410 .country = nl80211_get_country,
3411 .hardware_id = nl80211_get_hardware_id,
3412 .hardware_name = nl80211_get_hardware_name,
3413 .encryption = nl80211_get_encryption,
3414 .phyname = nl80211_get_phyname,
3415 .assoclist = nl80211_get_assoclist,
3416 .txpwrlist = nl80211_get_txpwrlist,
3417 .scanlist = nl80211_get_scanlist,
3418 .freqlist = nl80211_get_freqlist,
3419 .countrylist = nl80211_get_countrylist,
3420 .survey = nl80211_get_survey,
3421 .lookup_phy = nl80211_lookup_phyname,
3422 .close = nl80211_close
3423 };
Library for accessing wireless device drivers