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 wl_ioctl(const char *name, int cmd, void *buf, int len)
  25 {
  26         struct ifreq ifr;
  27         wl_ioctl_t ioc;
  28
  29         /* do it */
  30         ioc.cmd = cmd;
  31         ioc.buf = buf;
  32         ioc.len = len;
  33
  34         strncpy(ifr.ifr_name, name, IFNAMSIZ);
  35         ifr.ifr_data = (caddr_t) &ioc;
  36
  37         return iwinfo_ioctl(SIOCDEVPRIVATE, &ifr);
  38 }
  39
  40 static struct wl_maclist * wl_read_assoclist(const char *ifname)
  41 {
  42         struct wl_maclist *macs;
  43         int maclen = 4 + WL_MAX_STA_COUNT * 6;
  44
  45         if( (macs = (struct wl_maclist *) malloc(maclen)) != NULL )
  46         {
  47                 memset(macs, 0, maclen);
  48                 macs->count = WL_MAX_STA_COUNT;
  49
  50                 if( !wl_ioctl(ifname, WLC_GET_ASSOCLIST, macs, maclen) )
  51                         return macs;
  52
  53                 free(macs);
  54         }
  55
  56         return NULL;
  57 }
  58
  59
  60 int wl_probe(const char *ifname)
  61 {
  62         int magic;
  63
  64         if( !wl_ioctl(ifname, WLC_GET_MAGIC, &magic, sizeof(magic)) && (magic == WLC_IOCTL_MAGIC))
  65                 return 1;
  66
  67         return 0;
  68 }
  69
  70 void wl_close(void)
  71 {
  72         /* Nop */
  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         char ccode[WLC_CNTRY_BUF_SZ];
 486
 487         if( !wl_ioctl(ifname, WLC_GET_COUNTRY, ccode, WLC_CNTRY_BUF_SZ) )
 488         {
 489                 /* IL0 -> World */
 490                 if( !strcmp(ccode, "IL0") )
 491                         sprintf(buf, "00");
 492
 493                 /* YU -> RS */
 494                 else if( !strcmp(ccode, "YU") )
 495                         sprintf(buf, "RS");
 496
 497                 else
 498                         memcpy(buf, ccode, 2);
 499
 500                 return 0;
 501         }
 502
 503         return -1;
 504 }
 505
 506 int wl_get_countrylist(const char *ifname, char *buf, int *len)
 507 {
 508         int i, count;
 509         char cdata[WLC_IOCTL_MAXLEN];
 510         struct iwinfo_country_entry *c = (struct iwinfo_country_entry *)buf;
 511         wl_country_list_t *cl = (wl_country_list_t *)cdata;
 512
 513         cl->buflen = sizeof(cdata);
 514
 515         if( !wl_ioctl(ifname, WLC_GET_COUNTRY_LIST, cl, cl->buflen) )
 516         {
 517                 for( i = 0, count = 0; i < cl->count; i++, c++ )
 518                 {
 519                         sprintf(c->ccode, &cl->country_abbrev[i * WLC_CNTRY_BUF_SZ]);
 520                         c->iso3166 = c->ccode[0] * 256 + c->ccode[1];
 521
 522                         /* IL0 -> World */
 523                         if( !strcmp(c->ccode, "IL0") )
 524                                 c->iso3166 = 0x3030;
 525
 526                         /* YU -> RS */
 527                         else if( !strcmp(c->ccode, "YU") )
 528                                 c->iso3166 = 0x5253;
 529                 }
 530
 531                 *len = (i * sizeof(struct iwinfo_country_entry));
 532                 return 0;
 533         }
 534
 535         return -1;
 536 }
 537
 538 int wl_get_hwmodelist(const char *ifname, int *buf)
 539 {
 540         return wext_get_hwmodelist(ifname, buf);
 541 }
 542
 543 int wl_get_mbssid_support(const char *ifname, int *buf)
 544 {
 545         wlc_rev_info_t revinfo;
 546
 547         /* Multi bssid support only works on corerev >= 9 */
 548         if( !wl_ioctl(ifname, WLC_GET_REVINFO, &revinfo, sizeof(revinfo)) )
 549         {
 550                 if( revinfo.corerev >= 9 )
 551                 {
 552                         *buf = 1;
 553                         return 0;
 554                 }
 555         }
 556
 557         return -1;
 558 }