summaryrefslogtreecommitdiff
path: root/package/iwinfo/src/iwinfo_wl.c
blob: 3acfff4aadab5e3f2cb5c61ebec34c9450d567d8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
/*
 * iwinfo - Wireless Information Library - Broadcom wl.o Backend
 *
 *   Copyright (C) 2009 Jo-Philipp Wich <xm@subsignal.org>
 *
 * The iwinfo library is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * The iwinfo library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with the iwinfo library. If not, see http://www.gnu.org/licenses/.
 *
 * This code is based on the wlc.c utility published by OpenWrt.org .
 */

#include "iwinfo/wl.h"
#include "iwinfo/wext.h"

static int wl_ioctl(const char *name, int cmd, void *buf, int len)
{
	struct ifreq ifr;
	wl_ioctl_t ioc;

	/* do it */
	ioc.cmd = cmd;
	ioc.buf = buf;
	ioc.len = len;

	strncpy(ifr.ifr_name, name, IFNAMSIZ);
	ifr.ifr_data = (caddr_t) &ioc;

	return iwinfo_ioctl(SIOCDEVPRIVATE, &ifr);
}

static int wl_iovar(const char *name, const char *cmd, const char *arg,
					int arglen, void *buf, int buflen)
{
	int cmdlen = strlen(cmd) + 1;

	memcpy(buf, cmd, cmdlen);

	if (arg && arglen > 0)
		memcpy(buf + cmdlen, arg, arglen);

	return wl_ioctl(name, WLC_GET_VAR, buf, buflen);
}

static struct wl_maclist * wl_read_assoclist(const char *ifname)
{
	struct wl_maclist *macs;
	int maclen = 4 + WL_MAX_STA_COUNT * 6;

	if ((macs = (struct wl_maclist *) malloc(maclen)) != NULL)
	{
		memset(macs, 0, maclen);
		macs->count = WL_MAX_STA_COUNT;

		if (!wl_ioctl(ifname, WLC_GET_ASSOCLIST, macs, maclen))
			return macs;

		free(macs);
	}

	return NULL;
}


int wl_probe(const char *ifname)
{
	int magic;
	return (!wl_ioctl(ifname, WLC_GET_MAGIC, &magic, sizeof(magic)) &&
			(magic == WLC_IOCTL_MAGIC));
}

void wl_close(void)
{
	/* Nop */
}

int wl_get_mode(const char *ifname, char *buf)
{
	int ret = -1;
	int ap, infra, passive;

	if ((ret = wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap))))
		return ret;

	if ((ret = wl_ioctl(ifname, WLC_GET_INFRA, &infra, sizeof(infra))))
		return ret;

	if ((ret = wl_ioctl(ifname, WLC_GET_PASSIVE, &passive, sizeof(passive))))
		return ret;

	if (passive)
		sprintf(buf, "Monitor");
	else if (!infra)
		sprintf(buf, "Ad-Hoc");
	else if (ap)
		sprintf(buf, "Master");
	else
		sprintf(buf, "Client");

	return 0;
}

int wl_get_ssid(const char *ifname, char *buf)
{
	int ret = -1;
	wlc_ssid_t ssid;

	if (!(ret = wl_ioctl(ifname, WLC_GET_SSID, &ssid, sizeof(ssid))))
		memcpy(buf, ssid.ssid, ssid.ssid_len);

	return ret;
}

int wl_get_bssid(const char *ifname, char *buf)
{
	int ret = -1;
	char bssid[6];

	if (!(ret = wl_ioctl(ifname, WLC_GET_BSSID, bssid, 6)))
		sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
			(uint8_t)bssid[0], (uint8_t)bssid[1], (uint8_t)bssid[2],
			(uint8_t)bssid[3], (uint8_t)bssid[4], (uint8_t)bssid[5]
		);

	return ret;
}

int wl_get_channel(const char *ifname, int *buf)
{
	return wl_ioctl(ifname, WLC_GET_CHANNEL, buf, sizeof(buf));
}

int wl_get_frequency(const char *ifname, int *buf)
{
	return wext_get_frequency(ifname, buf);
}

int wl_get_txpower(const char *ifname, int *buf)
{
	/* WLC_GET_VAR "qtxpower" */
	return wext_get_txpower(ifname, buf);
}

int wl_get_bitrate(const char *ifname, int *buf)
{
	int ret = -1;
	int rate = 0;

	if( !(ret = wl_ioctl(ifname, WLC_GET_RATE, &rate, sizeof(rate))) && (rate > 0))
		*buf = ((rate / 2) * 1000) + ((rate & 1) ? 500 : 0);

	return ret;
}

int wl_get_signal(const char *ifname, int *buf)
{
	unsigned int ap, rssi, i, rssi_count;
	int ioctl_req_version = 0x2000;
	char tmp[WLC_IOCTL_MAXLEN];
	struct wl_maclist *macs = NULL;
	wl_sta_rssi_t starssi;

	memset(tmp, 0, WLC_IOCTL_MAXLEN);
	memcpy(tmp, &ioctl_req_version, sizeof(ioctl_req_version));

	wl_ioctl(ifname, WLC_GET_BSS_INFO, tmp, WLC_IOCTL_MAXLEN);

	if (!wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap)) && !ap)
	{
		*buf = tmp[WL_BSS_RSSI_OFFSET];
	}
	else
	{
		rssi = rssi_count = 0;

		/* Calculate average rssi from conntected stations */
		if ((macs = wl_read_assoclist(ifname)) != NULL)
		{
			for (i = 0; i < macs->count; i++)
			{
				memcpy(starssi.mac, &macs->ea[i], 6);

				if (!wl_ioctl(ifname, WLC_GET_RSSI, &starssi, 12))
				{
					rssi -= starssi.rssi;
					rssi_count++;
				}
			}

			free(macs);
		}

		*buf = (rssi == 0 || rssi_count == 0) ? 1 : -(rssi / rssi_count);
	}

	return 0;
}

int wl_get_noise(const char *ifname, int *buf)
{
	unsigned int ap, noise;
	int ioctl_req_version = 0x2000;
	char tmp[WLC_IOCTL_MAXLEN];

	memset(tmp, 0, WLC_IOCTL_MAXLEN);
	memcpy(tmp, &ioctl_req_version, sizeof(ioctl_req_version));

	wl_ioctl(ifname, WLC_GET_BSS_INFO, tmp, WLC_IOCTL_MAXLEN);

	if ((wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap)) < 0) || ap)
	{
		if (wl_ioctl(ifname, WLC_GET_PHY_NOISE, &noise, sizeof(noise)) < 0)
			noise = 0;
	}
	else
	{
		noise = tmp[WL_BSS_NOISE_OFFSET];
	}

	*buf = noise;

	return 0;
}

int wl_get_quality(const char *ifname, int *buf)
{
	return wext_get_quality(ifname, buf);
}

int wl_get_quality_max(const char *ifname, int *buf)
{
	return wext_get_quality_max(ifname, buf);
}

int wl_get_encryption(const char *ifname, char *buf)
{
	uint32_t wsec, wauth, wpa;
	struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf;

	if( wl_ioctl(ifname, WLC_GET_WPA_AUTH, &wpa,   sizeof(uint32_t)) ||
	    wl_ioctl(ifname, WLC_GET_WSEC,     &wsec,  sizeof(uint32_t)) ||
		wl_ioctl(ifname, WLC_GET_AUTH,     &wauth, sizeof(uint32_t)) )
			return -1;

	switch(wsec)
	{
		case 2:
			c->pair_ciphers |= IWINFO_CIPHER_TKIP;
			break;

		case 4:
			c->pair_ciphers |= IWINFO_CIPHER_CCMP;
			break;

		case 6:
			c->pair_ciphers |= IWINFO_CIPHER_TKIP;
			c->pair_ciphers |= IWINFO_CIPHER_CCMP;
			break;
	}

	switch(wpa)
	{
		case 0:
			if (wsec && !wauth)
				c->auth_algs |= IWINFO_AUTH_OPEN;

			else if (wsec && wauth)
				c->auth_algs |= IWINFO_AUTH_SHARED;

			/* ToDo: evaluate WEP key lengths */
			c->pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
			c->auth_suites |= IWINFO_KMGMT_NONE;
			break;

		case 2:
			c->wpa_version = 1;
			c->auth_suites |= IWINFO_KMGMT_8021x;
			break;

		case 4:
			c->wpa_version = 1;
			c->auth_suites |= IWINFO_KMGMT_PSK;
			break;

		case 32:
		case 64:
			c->wpa_version = 2;
			c->auth_suites |= IWINFO_KMGMT_8021x;
			break;

		case 66:
			c->wpa_version = 3;
			c->auth_suites |= IWINFO_KMGMT_8021x;
			break;

		case 128:
			c->wpa_version = 2;
			c->auth_suites |= IWINFO_KMGMT_PSK;
			break;

		case 132:
			c->wpa_version = 3;
			c->auth_suites |= IWINFO_KMGMT_PSK;
			break;

		default:
			break;
	}

	c->enabled = (c->wpa_version || c->auth_algs) ? 1 : 0;
	c->group_ciphers = c->pair_ciphers;

	return 0;
}

int wl_get_enctype(const char *ifname, char *buf)
{
	uint32_t wsec, wpa;
	char algo[11];

	if( wl_ioctl(ifname, WLC_GET_WPA_AUTH, &wpa, sizeof(uint32_t)) ||
	    wl_ioctl(ifname, WLC_GET_WSEC, &wsec, sizeof(uint32_t)) )
			return -1;

	switch(wsec)
	{
		case 2:
			sprintf(algo, "TKIP");
			break;

		case 4:
			sprintf(algo, "CCMP");
			break;

		case 6:
			sprintf(algo, "TKIP, CCMP");
			break;
	}

	switch(wpa)
	{
		case 0:
			sprintf(buf, "%s", wsec ? "WEP" : "None");
			break;

		case 2:
			sprintf(buf, "WPA 802.1X (%s)", algo);
			break;

		case 4:
			sprintf(buf, "WPA PSK (%s)", algo);
			break;

		case 32:
			sprintf(buf, "802.1X (%s)", algo);
			break;

		case 64:
			sprintf(buf, "WPA2 802.1X (%s)", algo);
			break;

		case 66:
			sprintf(buf, "mixed WPA/WPA2 802.1X (%s)", algo);
			break;

		case 128:
			sprintf(buf, "WPA2 PSK (%s)", algo);
			break;

		case 132:
			sprintf(buf, "mixed WPA/WPA2 PSK (%s)", algo);
			break;

		default:
			sprintf(buf, "Unknown");
	}

	return 0;
}

static void wl_get_assoclist_cb(const char *ifname,
							    struct iwinfo_assoclist_entry *e)
{
	wl_sta_info_t sta = { 0 };

	if (!wl_iovar(ifname, "sta_info", e->mac, 6, &sta, sizeof(sta)) &&
		(sta.ver >= 2))
	{
		e->inactive     = sta.idle * 1000;
		e->rx_packets   = sta.rx_ucast_pkts;
		e->tx_packets   = sta.tx_pkts;
		e->rx_rate.rate = sta.rx_rate;
		e->tx_rate.rate = sta.tx_rate;

		/* ToDo: 11n */
		e.rx_rate.mcs = -1;
		e.tx_rate.mcs = -1;
	}
}

int wl_get_assoclist(const char *ifname, char *buf, int *len)
{
	int i, j, noise;
	int ap, infra, passive;
	char line[128];
	char macstr[18];
	char devstr[IFNAMSIZ];
	struct wl_maclist *macs;
	struct wl_sta_rssi rssi;
	struct iwinfo_assoclist_entry entry;
	FILE *arp;

	ap = infra = passive = 0;

	wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap));
	wl_ioctl(ifname, WLC_GET_INFRA, &infra, sizeof(infra));
	wl_ioctl(ifname, WLC_GET_PASSIVE, &passive, sizeof(passive));

	if (wl_get_noise(ifname, &noise))
		noise = 0;

	if ((ap || infra || passive) && ((macs = wl_read_assoclist(ifname)) != NULL))
	{
		for (i = 0, j = 0; i < macs->count; i++, j += sizeof(struct iwinfo_assoclist_entry))
		{
			memset(&entry, 0, sizeof(entry));
			memcpy(rssi.mac, &macs->ea[i], 6);

			if (!wl_ioctl(ifname, WLC_GET_RSSI, &rssi, sizeof(struct wl_sta_rssi)))
				entry.signal = (rssi.rssi - 0x100);
			else
				entry.signal = 0;

			entry.noise = noise;
			memcpy(entry.mac, &macs->ea[i], 6);
			wl_get_assoclist_cb(ifname, &entry);

			memcpy(&buf[j], &entry, sizeof(entry));
		}

		*len = j;
		free(macs);
		return 0;
	}
	else if ((arp = fopen("/proc/net/arp", "r")) != NULL)
	{
		j = 0;

		while (fgets(line, sizeof(line), arp) != NULL)
		{
			if (sscanf(line, "%*s 0x%*d 0x%*d %17s %*s %s", macstr, devstr) && !strcmp(devstr, ifname))
			{
				rssi.mac[0] = strtol(&macstr[0],  NULL, 16);
				rssi.mac[1] = strtol(&macstr[3],  NULL, 16);
				rssi.mac[2] = strtol(&macstr[6],  NULL, 16);
				rssi.mac[3] = strtol(&macstr[9],  NULL, 16);
				rssi.mac[4] = strtol(&macstr[12], NULL, 16);
				rssi.mac[5] = strtol(&macstr[15], NULL, 16);

				if (!wl_ioctl(ifname, WLC_GET_RSSI, &rssi, sizeof(struct wl_sta_rssi)))
					entry.signal = (rssi.rssi - 0x100);
				else
					entry.signal = 0;

				entry.noise = noise;
				memcpy(entry.mac, rssi.mac, 6);
				memcpy(&buf[j], &entry, sizeof(entry));

				j += sizeof(entry);
			}
		}

		*len = j;
		(void) fclose(arp);
		return 0;
	}

	return -1;
}

int wl_get_txpwrlist(const char *ifname, char *buf, int *len)
{
	struct iwinfo_txpwrlist_entry entry;
	uint8_t dbm[8] = { 0, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 };
	uint8_t mw[8]  = { 1, 3, 6, 10, 15, 25, 39, 63, 100, 158, 251 };
	int i;

	for (i = 0; i < 8; i++)
	{
		entry.dbm = dbm[i];
		entry.mw  = mw[i];
		memcpy(&buf[i*sizeof(entry)], &entry, sizeof(entry));
	}

	*len = 8 * sizeof(entry);
	return 0;
}

int wl_get_scanlist(const char *ifname, char *buf, int *len)
{
	return wext_get_scanlist(ifname, buf, len);
}

int wl_get_freqlist(const char *ifname, char *buf, int *len)
{
	return wext_get_freqlist(ifname, buf, len);
}

int wl_get_country(const char *ifname, char *buf)
{
	char ccode[WLC_CNTRY_BUF_SZ];

	if (!wl_ioctl(ifname, WLC_GET_COUNTRY, ccode, WLC_CNTRY_BUF_SZ))
	{
		/* IL0 -> World */
		if (!strcmp(ccode, "IL0"))
			sprintf(buf, "00");

		/* YU -> RS */
		else if (!strcmp(ccode, "YU"))
			sprintf(buf, "RS");

		else
			memcpy(buf, ccode, 2);

		return 0;
	}

	return -1;
}

int wl_get_countrylist(const char *ifname, char *buf, int *len)
{
	int i, count;
	char cdata[WLC_IOCTL_MAXLEN];
	struct iwinfo_country_entry *c = (struct iwinfo_country_entry *)buf;
	wl_country_list_t *cl = (wl_country_list_t *)cdata;

	cl->buflen = sizeof(cdata);

	if (!wl_ioctl(ifname, WLC_GET_COUNTRY_LIST, cl, cl->buflen))
	{
		for (i = 0, count = 0; i < cl->count; i++, c++)
		{
			sprintf(c->ccode, &cl->country_abbrev[i * WLC_CNTRY_BUF_SZ]);
			c->iso3166 = c->ccode[0] * 256 + c->ccode[1];

			/* IL0 -> World */
			if (!strcmp(c->ccode, "IL0"))
				c->iso3166 = 0x3030;

			/* YU -> RS */
			else if (!strcmp(c->ccode, "YU"))
				c->iso3166 = 0x5253;
		}

		*len = (i * sizeof(struct iwinfo_country_entry));
		return 0;
	}

	return -1;
}

int wl_get_hwmodelist(const char *ifname, int *buf)
{
	return wext_get_hwmodelist(ifname, buf);
}

int wl_get_mbssid_support(const char *ifname, int *buf)
{
	wlc_rev_info_t revinfo;

	/* Multi bssid support only works on corerev >= 9 */
	if (!wl_ioctl(ifname, WLC_GET_REVINFO, &revinfo, sizeof(revinfo)))
	{
		if (revinfo.corerev >= 9)
		{
			*buf = 1;
			return 0;
		}
	}

	return -1;
}

int wl_get_hardware_id(const char *ifname, char *buf)
{
	wlc_rev_info_t revinfo;
	struct iwinfo_hardware_id *ids = (struct iwinfo_hardware_id *)buf;

	if (wl_ioctl(ifname, WLC_GET_REVINFO, &revinfo, sizeof(revinfo)))
		return -1;

	ids->vendor_id = revinfo.vendorid;
	ids->device_id = revinfo.deviceid;
	ids->subsystem_vendor_id = revinfo.boardvendor;
	ids->subsystem_device_id = revinfo.boardid;

	return 0;
}

int wl_get_hardware_name(const char *ifname, char *buf)
{
	struct iwinfo_hardware_id ids;

	if (wl_get_hardware_id(ifname, (char *)&ids))
		return -1;

	sprintf(buf, "Broadcom BCM%04X", ids.device_id);

	return 0;
}

int wl_get_txpower_offset(const char *ifname, int *buf)
{
	FILE *p;
	char off[8];

	*buf = 0;

	if ((p = popen("/usr/sbin/nvram get opo", "r")) != NULL)
	{
		if (fread(off, 1, sizeof(off), p))
			*buf = strtoul(off, NULL, 16);

		pclose(p);
	}

	return 0;
}

int wl_get_frequency_offset(const char *ifname, int *buf)
{
	/* Stub */
	*buf = 0;
	return -1;
}