[libiwinfo] introduce country() and countrylist() (ISO3166 to driver code mapping)
[project/luci.git] / contrib / package / iwinfo / src / iwinfo_wl.c
1 /*
2  * iwinfo - Wireless Information Library - Broadcom wl.o Backend
3  *
4  *   Copyright (C) 2009 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  * This code is based on the wlc.c utility published by OpenWrt.org .
19  */
20
21 #include "iwinfo_wl.h"
22 #include "iwinfo_wext.h"
23
24 static int ioctl_socket = -1;
25
26 static int wl_ioctl(const char *name, int cmd, void *buf, int len)
27 {
28         struct ifreq ifr;
29         wl_ioctl_t ioc;
30
31         /* prepare socket */
32         if( ioctl_socket == -1 )
33                 ioctl_socket = socket(AF_INET, SOCK_DGRAM, 0);
34
35         /* do it */
36         ioc.cmd = cmd;
37         ioc.buf = buf;
38         ioc.len = len;
39         strncpy(ifr.ifr_name, name, IFNAMSIZ);
40         ifr.ifr_data = (caddr_t) &ioc;
41
42         return ioctl(ioctl_socket, SIOCDEVPRIVATE, &ifr);
43 }
44
45 static struct wl_maclist * wl_read_assoclist(const char *ifname)
46 {
47         struct wl_maclist *macs;
48         int maclen = 4 + WL_MAX_STA_COUNT * 6;
49
50         if( (macs = (struct wl_maclist *) malloc(maclen)) != NULL )
51         {
52                 memset(macs, 0, maclen);
53                 macs->count = WL_MAX_STA_COUNT;
54
55                 if( !wl_ioctl(ifname, WLC_GET_ASSOCLIST, macs, maclen) )
56                         return macs;
57
58                 free(macs);
59         }
60
61         return NULL;
62 }
63
64
65 int wl_probe(const char *ifname)
66 {
67         int magic;
68
69         if( !wl_ioctl(ifname, WLC_GET_MAGIC, &magic, sizeof(magic)) && (magic == WLC_IOCTL_MAGIC))
70                 return 1;
71
72         return 0;
73 }
74
75 int wl_get_mode(const char *ifname, char *buf)
76 {
77         int ret = -1;
78         int ap, infra, passive;
79
80         if( (ret = wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap))) )
81                 return ret;
82
83         if( (ret = wl_ioctl(ifname, WLC_GET_INFRA, &infra, sizeof(infra))) )
84                 return ret;
85
86         if( (ret = wl_ioctl(ifname, WLC_GET_PASSIVE, &passive, sizeof(passive))) )
87                 return ret;
88
89         if( passive )
90                 sprintf(buf, "Monitor");
91         else if( !infra )
92                 sprintf(buf, "Ad-Hoc");
93         else if( ap )
94                 sprintf(buf, "Master");
95         else
96                 sprintf(buf, "Client");
97
98         return 0;
99 }
100
101 int wl_get_ssid(const char *ifname, char *buf)
102 {
103         int ret = -1;
104         wlc_ssid_t ssid;
105
106         if( !(ret = wl_ioctl(ifname, WLC_GET_SSID, &ssid, sizeof(ssid))) )
107                 memcpy(buf, ssid.ssid, ssid.ssid_len);
108
109         return ret;
110 }
111
112 int wl_get_bssid(const char *ifname, char *buf)
113 {
114         int ret = -1;
115         char bssid[6];
116
117         if( !(ret = wl_ioctl(ifname, WLC_GET_BSSID, bssid, 6)) )
118                 sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
119                         (uint8_t)bssid[0], (uint8_t)bssid[1], (uint8_t)bssid[2],
120                         (uint8_t)bssid[3], (uint8_t)bssid[4], (uint8_t)bssid[5]
121                 );
122
123         return ret;
124 }
125
126 int wl_get_channel(const char *ifname, int *buf)
127 {
128         return wl_ioctl(ifname, WLC_GET_CHANNEL, buf, sizeof(buf));
129 }
130
131 int wl_get_frequency(const char *ifname, int *buf)
132 {
133         return wext_get_frequency(ifname, buf);
134 }
135
136 int wl_get_txpower(const char *ifname, int *buf)
137 {
138         return wext_get_txpower(ifname, buf);
139 }
140
141 int wl_get_bitrate(const char *ifname, int *buf)
142 {
143         int ret = -1;
144         int rate = 0;
145
146         if( !(ret = wl_ioctl(ifname, WLC_GET_RATE, &rate, sizeof(rate))) && (rate > 0))
147                 *buf = ((rate / 2) * 1000) + ((rate & 1) ? 500 : 0);
148
149         return ret;
150 }
151
152 int wl_get_signal(const char *ifname, int *buf)
153 {
154         unsigned int ap, rssi, i, rssi_count;
155         int ioctl_req_version = 0x2000;
156         char tmp[WLC_IOCTL_MAXLEN];
157         struct wl_maclist *macs = NULL;
158         wl_sta_rssi_t starssi;
159
160         memset(tmp, 0, WLC_IOCTL_MAXLEN);
161         memcpy(tmp, &ioctl_req_version, sizeof(ioctl_req_version));
162
163         wl_ioctl(ifname, WLC_GET_BSS_INFO, tmp, WLC_IOCTL_MAXLEN);
164
165         if( !wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap)) && !ap )
166         {
167                 *buf = tmp[WL_BSS_RSSI_OFFSET];
168         }
169         else
170         {
171                 rssi = rssi_count = 0;
172
173                 /* Calculate average rssi from conntected stations */
174                 if( (macs = wl_read_assoclist(ifname)) != NULL )
175                 {
176                         for( i = 0; i < macs->count; i++ )
177                         {
178                                 memcpy(starssi.mac, &macs->ea[i], 6);
179
180                                 if( !wl_ioctl(ifname, WLC_GET_RSSI, &starssi, 12) )
181                                 {
182                                         rssi -= starssi.rssi;
183                                         rssi_count++;
184                                 }
185                         }
186
187                         free(macs);
188                 }
189
190                 *buf = (rssi == 0 || rssi_count == 0) ? 1 : -(rssi / rssi_count);
191         }
192
193         return 0;
194 }
195
196 int wl_get_noise(const char *ifname, int *buf)
197 {
198         unsigned int ap, noise;
199         int ioctl_req_version = 0x2000;
200         char tmp[WLC_IOCTL_MAXLEN];
201
202         memset(tmp, 0, WLC_IOCTL_MAXLEN);
203         memcpy(tmp, &ioctl_req_version, sizeof(ioctl_req_version));
204
205         wl_ioctl(ifname, WLC_GET_BSS_INFO, tmp, WLC_IOCTL_MAXLEN);
206
207         if ((wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap)) < 0) || ap)
208         {
209                 if (wl_ioctl(ifname, WLC_GET_PHY_NOISE, &noise, sizeof(noise)) < 0)
210                         noise = 0;
211         }
212         else
213         {
214                 noise = tmp[WL_BSS_NOISE_OFFSET];
215         }
216
217         *buf = noise;
218
219         return 0;
220 }
221
222 int wl_get_quality(const char *ifname, int *buf)
223 {
224         return wext_get_quality(ifname, buf);
225 }
226
227 int wl_get_quality_max(const char *ifname, int *buf)
228 {
229         return wext_get_quality_max(ifname, buf);
230 }
231
232 int wl_get_encryption(const char *ifname, char *buf)
233 {
234         uint32_t wsec, wauth, wpa;
235         struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf;
236
237         if( wl_ioctl(ifname, WLC_GET_WPA_AUTH, &wpa,   sizeof(uint32_t)) ||
238             wl_ioctl(ifname, WLC_GET_WSEC,     &wsec,  sizeof(uint32_t)) ||
239                 wl_ioctl(ifname, WLC_GET_AUTH,     &wauth, sizeof(uint32_t)) )
240                         return -1;
241
242         switch(wsec)
243         {
244                 case 2:
245                         c->pair_ciphers |= IWINFO_CIPHER_TKIP;
246                         break;
247
248                 case 4:
249                         c->pair_ciphers |= IWINFO_CIPHER_CCMP;
250                         break;
251
252                 case 6:
253                         c->pair_ciphers |= IWINFO_CIPHER_TKIP;
254                         c->pair_ciphers |= IWINFO_CIPHER_CCMP;
255                         break;
256         }
257
258         switch(wpa)
259         {
260                 case 0:
261                         if( wsec && !wauth )
262                                 c->auth_algs |= IWINFO_AUTH_OPEN;
263
264                         else if( wsec && wauth )
265                                 c->auth_algs |= IWINFO_AUTH_SHARED;
266
267                         /* ToDo: evaluate WEP key lengths */
268                         c->pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
269                         c->auth_suites |= IWINFO_KMGMT_NONE;
270                         break;
271
272                 case 2:
273                         c->wpa_version = 1;
274                         c->auth_suites |= IWINFO_KMGMT_8021x;
275                         break;
276
277                 case 4:
278                         c->wpa_version = 1;
279                         c->auth_suites |= IWINFO_KMGMT_PSK;
280                         break;
281
282                 case 32:
283                 case 64:
284                         c->wpa_version = 2;
285                         c->auth_suites |= IWINFO_KMGMT_8021x;
286                         break;
287
288                 case 66:
289                         c->wpa_version = 3;
290                         c->auth_suites |= IWINFO_KMGMT_8021x;
291                         break;
292
293                 case 128:
294                         c->wpa_version = 2;
295                         c->auth_suites |= IWINFO_KMGMT_PSK;
296                         break;
297
298                 case 132:
299                         c->wpa_version = 3;
300                         c->auth_suites |= IWINFO_KMGMT_PSK;
301                         break;
302
303                 default:
304                         break;
305         }
306
307         c->enabled = (c->wpa_version || c->auth_algs) ? 1 : 0;
308         c->group_ciphers = c->pair_ciphers;
309
310         return 0;
311 }
312
313 int wl_get_enctype(const char *ifname, char *buf)
314 {
315         uint32_t wsec, wpa;
316         char algo[11];
317
318         if( wl_ioctl(ifname, WLC_GET_WPA_AUTH, &wpa, sizeof(uint32_t)) ||
319             wl_ioctl(ifname, WLC_GET_WSEC, &wsec, sizeof(uint32_t)) )
320                         return -1;
321
322         switch(wsec)
323         {
324                 case 2:
325                         sprintf(algo, "TKIP");
326                         break;
327
328                 case 4:
329                         sprintf(algo, "CCMP");
330                         break;
331
332                 case 6:
333                         sprintf(algo, "TKIP, CCMP");
334                         break;
335         }
336
337         switch(wpa)
338         {
339                 case 0:
340                         sprintf(buf, "%s", wsec ? "WEP" : "None");
341                         break;
342
343                 case 2:
344                         sprintf(buf, "WPA 802.1X (%s)", algo);
345                         break;
346
347                 case 4:
348                         sprintf(buf, "WPA PSK (%s)", algo);
349                         break;
350
351                 case 32:
352                         sprintf(buf, "802.1X (%s)", algo);
353                         break;
354
355                 case 64:
356                         sprintf(buf, "WPA2 802.1X (%s)", algo);
357                         break;
358
359                 case 66:
360                         sprintf(buf, "mixed WPA/WPA2 802.1X (%s)", algo);
361                         break;
362
363                 case 128:
364                         sprintf(buf, "WPA2 PSK (%s)", algo);
365                         break;
366
367                 case 132:
368                         sprintf(buf, "mixed WPA/WPA2 PSK (%s)", algo);
369                         break;
370
371                 default:
372                         sprintf(buf, "Unknown");
373         }
374
375         return 0;
376 }
377
378 int wl_get_assoclist(const char *ifname, char *buf, int *len)
379 {
380         int i, j, noise;
381         int ap, infra, passive;
382         char line[128];
383         char macstr[18];
384         char devstr[IFNAMSIZ];
385         struct wl_maclist *macs;
386         struct wl_sta_rssi rssi;
387         struct iwinfo_assoclist_entry entry;
388         FILE *arp;
389
390         ap = infra = passive = 0;
391
392         wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap));
393         wl_ioctl(ifname, WLC_GET_INFRA, &infra, sizeof(infra));
394         wl_ioctl(ifname, WLC_GET_PASSIVE, &passive, sizeof(passive));
395
396         if( wl_get_noise(ifname, &noise) )
397                 noise = 0;
398
399         if( (ap || infra || passive) && ((macs = wl_read_assoclist(ifname)) != NULL) )
400         {
401                 for( i = 0, j = 0; i < macs->count; i++, j += sizeof(struct iwinfo_assoclist_entry) )
402                 {
403                         memcpy(rssi.mac, &macs->ea[i], 6);
404
405                         if( !wl_ioctl(ifname, WLC_GET_RSSI, &rssi, sizeof(struct wl_sta_rssi)) )
406                                 entry.signal = (rssi.rssi - 0x100);
407                         else
408                                 entry.signal = 0;
409
410                         entry.noise = noise;
411                         memcpy(entry.mac, &macs->ea[i], 6);
412                         memcpy(&buf[j], &entry, sizeof(entry));
413                 }
414
415                 *len = j;
416                 free(macs);
417                 return 0;
418         }
419         else if( (arp = fopen("/proc/net/arp", "r")) != NULL )
420         {
421                 j = 0;
422
423                 while( fgets(line, sizeof(line), arp) != NULL )
424                 {
425                         if( sscanf(line, "%*s 0x%*d 0x%*d %17s %*s %s", macstr, devstr) && !strcmp(devstr, ifname) )
426                         {
427                                 rssi.mac[0] = strtol(&macstr[0],  NULL, 16);
428                                 rssi.mac[1] = strtol(&macstr[3],  NULL, 16);
429                                 rssi.mac[2] = strtol(&macstr[6],  NULL, 16);
430                                 rssi.mac[3] = strtol(&macstr[9],  NULL, 16);
431                                 rssi.mac[4] = strtol(&macstr[12], NULL, 16);
432                                 rssi.mac[5] = strtol(&macstr[15], NULL, 16);
433
434                                 if( !wl_ioctl(ifname, WLC_GET_RSSI, &rssi, sizeof(struct wl_sta_rssi)) )
435                                         entry.signal = (rssi.rssi - 0x100);
436                                 else
437                                         entry.signal = 0;
438
439                                 entry.noise = noise;
440                                 memcpy(entry.mac, rssi.mac, 6);
441                                 memcpy(&buf[j], &entry, sizeof(entry));
442
443                                 j += sizeof(entry);
444                         }
445                 }
446
447                 *len = j;
448                 (void) fclose(arp);
449                 return 0;
450         }
451
452         return -1;
453 }
454
455 int wl_get_txpwrlist(const char *ifname, char *buf, int *len)
456 {
457         struct iwinfo_txpwrlist_entry entry;
458         uint8_t dbm[8] = { 0, 6, 8, 10, 12, 14, 16, 18 };
459         uint8_t mw[8]  = { 1, 3, 6, 10, 15, 25, 39, 63 };
460         int i;
461
462         for( i = 0; i < 8; i++ )
463         {
464                 entry.dbm = dbm[i];
465                 entry.mw  = mw[i];
466                 memcpy(&buf[i*sizeof(entry)], &entry, sizeof(entry));
467         }
468
469         *len = 8 * sizeof(entry);
470         return 0;
471 }
472
473 int wl_get_scanlist(const char *ifname, char *buf, int *len)
474 {
475         return wext_get_scanlist(ifname, buf, len);
476 }
477
478 int wl_get_freqlist(const char *ifname, char *buf, int *len)
479 {
480         return wext_get_freqlist(ifname, buf, len);
481 }
482
483 int wl_get_country(const char *ifname, char *buf)
484 {
485         if( !wl_ioctl(ifname, WLC_GET_COUNTRY, buf, WLC_CNTRY_BUF_SZ) )
486                 return 0;
487
488         return -1;
489 }
490
491 int wl_get_countrylist(const char *ifname, char *buf, int *len)
492 {
493         int i, count;
494         char cdata[WLC_IOCTL_MAXLEN];
495         struct iwinfo_country_entry *c = (struct iwinfo_country_entry *)buf;
496         wl_country_list_t *cl = (wl_country_list_t *)cdata;
497
498         cl->buflen = sizeof(cdata);
499
500         if( !wl_ioctl(ifname, WLC_GET_COUNTRY_LIST, cl, cl->buflen) )
501         {
502                 for( i = 0, count = 0; i < cl->count; i++, c++ )
503                 {
504                         sprintf(c->ccode, &cl->country_abbrev[i * WLC_CNTRY_BUF_SZ]);
505                         c->iso3166 = c->ccode[0] * 256 + c->ccode[1];
506
507                         /* IL0 -> World */
508                         if( !strcmp(c->ccode, "IL0") )
509                                 c->iso3166 = 0x3030;
510
511                         /* YU -> RS */
512                         else if( !strcmp(c->ccode, "YU") )
513                                 c->iso3166 = 0x5253;
514                 }
515
516                 *len = (i * sizeof(struct iwinfo_country_entry));
517                 return 0;
518         }
519
520         return -1;
521 }
522
523 int wl_get_mbssid_support(const char *ifname, int *buf)
524 {
525         wlc_rev_info_t revinfo;
526
527         /* Multi bssid support only works on corerev >= 9 */
528         if( !wl_ioctl(ifname, WLC_GET_REVINFO, &revinfo, sizeof(revinfo)) )
529         {
530                 if( revinfo.corerev >= 9 )
531                 {
532                         *buf = 1;
533                         return 0;
534                 }
535         }
536
537         return -1;
538 }