package/iwinfo/src/iwinfo_cli.c

   1 /*
   2  * iwinfo - Wireless Information Library - Command line frontend
   3  *
   4  *   Copyright (C) 2011 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
  19 #include <stdio.h>
  20
  21 #include "iwinfo.h"
  22
  23
  24 static char * format_bssid(unsigned char *mac)
  25 {
  26         static char buf[18];
  27
  28         snprintf(buf, sizeof(buf), "%02X:%02X:%02X:%02X:%02X:%02X",
  29                 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
  30
  31         return buf;
  32 }
  33
  34 static char * format_ssid(char *ssid)
  35 {
  36         static char buf[IWINFO_ESSID_MAX_SIZE+3];
  37
  38         if (ssid && ssid[0])
  39                 snprintf(buf, sizeof(buf), "\"%s\"", ssid);
  40         else
  41                 snprintf(buf, sizeof(buf), "unknown");
  42
  43         return buf;
  44 }
  45
  46 static char * format_channel(int ch)
  47 {
  48         static char buf[8];
  49
  50         if (ch <= 0)
  51                 snprintf(buf, sizeof(buf), "unknown");
  52         else
  53                 snprintf(buf, sizeof(buf), "%d", ch);
  54
  55         return buf;
  56 }
  57
  58 static char * format_frequency(int freq)
  59 {
  60         static char buf[10];
  61
  62         if (freq <= 0)
  63                 snprintf(buf, sizeof(buf), "unknown");
  64         else
  65                 snprintf(buf, sizeof(buf), "%.3f GHz", ((float)freq / 1000.0));
  66
  67         return buf;
  68 }
  69
  70 static char * format_txpower(int pwr)
  71 {
  72         static char buf[10];
  73
  74         if (pwr < 0)
  75                 snprintf(buf, sizeof(buf), "unknown");
  76         else
  77                 snprintf(buf, sizeof(buf), "%d dBm", pwr);
  78
  79         return buf;
  80 }
  81
  82 static char * format_quality(int qual)
  83 {
  84         static char buf[8];
  85
  86         if (qual < 0)
  87                 snprintf(buf, sizeof(buf), "unknown");
  88         else
  89                 snprintf(buf, sizeof(buf), "%d", qual);
  90
  91         return buf;
  92 }
  93
  94 static char * format_quality_max(int qmax)
  95 {
  96         static char buf[8];
  97
  98         if (qmax < 0)
  99                 snprintf(buf, sizeof(buf), "unknown");
 100         else
 101                 snprintf(buf, sizeof(buf), "%d", qmax);
 102
 103         return buf;
 104 }
 105
 106 static char * format_signal(int sig)
 107 {
 108         static char buf[10];
 109
 110         if (!sig)
 111                 snprintf(buf, sizeof(buf), "unknown");
 112         else
 113                 snprintf(buf, sizeof(buf), "%d dBm", sig);
 114
 115         return buf;
 116 }
 117
 118 static char * format_noise(int noise)
 119 {
 120         static char buf[10];
 121
 122         if (!noise)
 123                 snprintf(buf, sizeof(buf), "unknown");
 124         else
 125                 snprintf(buf, sizeof(buf), "%d dBm", noise);
 126
 127         return buf;
 128 }
 129
 130 static char * format_rate(int rate)
 131 {
 132         static char buf[14];
 133
 134         if (rate <= 0)
 135                 snprintf(buf, sizeof(buf), "unknown");
 136         else
 137                 snprintf(buf, sizeof(buf), "%.1f MBit/s", ((float)rate / 1000.0));
 138
 139         return buf;
 140 }
 141
 142 static char * format_enc_ciphers(int ciphers)
 143 {
 144         static char str[128] = { 0 };
 145         char *pos = str;
 146
 147         if (ciphers & IWINFO_CIPHER_WEP40)
 148                 pos += sprintf(pos, "WEP-40, ");
 149
 150         if (ciphers & IWINFO_CIPHER_WEP104)
 151                 pos += sprintf(pos, "WEP-104, ");
 152
 153         if (ciphers & IWINFO_CIPHER_TKIP)
 154                 pos += sprintf(pos, "TKIP, ");
 155
 156         if (ciphers & IWINFO_CIPHER_CCMP)
 157                 pos += sprintf(pos, "CCMP, ");
 158
 159         if (ciphers & IWINFO_CIPHER_WRAP)
 160                 pos += sprintf(pos, "WRAP, ");
 161
 162         if (ciphers & IWINFO_CIPHER_AESOCB)
 163                 pos += sprintf(pos, "AES-OCB, ");
 164
 165         if (ciphers & IWINFO_CIPHER_CKIP)
 166                 pos += sprintf(pos, "CKIP, ");
 167
 168         if (!ciphers || (ciphers & IWINFO_CIPHER_NONE))
 169                 pos += sprintf(pos, "NONE, ");
 170
 171         *(pos - 2) = 0;
 172
 173         return str;
 174 }
 175
 176 static char * format_enc_suites(int suites)
 177 {
 178         static char str[64] = { 0 };
 179         char *pos = str;
 180
 181         if (suites & IWINFO_KMGMT_PSK)
 182                 pos += sprintf(pos, "PSK/");
 183
 184         if (suites & IWINFO_KMGMT_8021x)
 185                 pos += sprintf(pos, "802.1X/");
 186
 187         if (!suites || (suites & IWINFO_KMGMT_NONE))
 188                 pos += sprintf(pos, "NONE/");
 189
 190         *(pos - 1) = 0;
 191
 192         return str;
 193 }
 194
 195 static char * format_encryption(struct iwinfo_crypto_entry *c)
 196 {
 197         static char buf[512];
 198
 199         if (!c)
 200         {
 201                 snprintf(buf, sizeof(buf), "unknown");
 202         }
 203         else if (c->enabled)
 204         {
 205                 /* WEP */
 206                 if (c->auth_algs && !c->wpa_version)
 207                 {
 208                         if ((c->auth_algs & IWINFO_AUTH_OPEN) &&
 209                                 (c->auth_algs & IWINFO_AUTH_SHARED))
 210                         {
 211                                 snprintf(buf, sizeof(buf), "WEP Open/Shared (%s)",
 212                                         format_enc_ciphers(c->pair_ciphers));
 213                         }
 214                         else if (c->auth_algs & IWINFO_AUTH_OPEN)
 215                         {
 216                                 snprintf(buf, sizeof(buf), "WEP Open System (%s)",
 217                                         format_enc_ciphers(c->pair_ciphers));
 218                         }
 219                         else if (c->auth_algs & IWINFO_AUTH_SHARED)
 220                         {
 221                                 snprintf(buf, sizeof(buf), "WEP Shared Auth (%s)",
 222                                         format_enc_ciphers(c->pair_ciphers));
 223                         }
 224                 }
 225
 226                 /* WPA */
 227                 else if (c->wpa_version)
 228                 {
 229                         switch (c->wpa_version) {
 230                                 case 3:
 231                                         snprintf(buf, sizeof(buf), "mixed WPA/WPA2 %s (%s)",
 232                                                 format_enc_suites(c->auth_suites),
 233                                                 format_enc_ciphers(c->pair_ciphers & c->group_ciphers));
 234                                         break;
 235
 236                                 case 2:
 237                                         snprintf(buf, sizeof(buf), "WPA2 %s (%s)",
 238                                                 format_enc_suites(c->auth_suites),
 239                                                 format_enc_ciphers(c->pair_ciphers & c->group_ciphers));
 240                                         break;
 241
 242                                 case 1:
 243                                         snprintf(buf, sizeof(buf), "WPA %s (%s)",
 244                                                 format_enc_suites(c->auth_suites),
 245                                                 format_enc_ciphers(c->pair_ciphers & c->group_ciphers));
 246                                         break;
 247                         }
 248                 }
 249                 else
 250                 {
 251                         snprintf(buf, sizeof(buf), "none");
 252                 }
 253         }
 254         else
 255         {
 256                 snprintf(buf, sizeof(buf), "none");
 257         }
 258
 259         return buf;
 260 }
 261
 262 static char * format_hwmodes(int modes)
 263 {
 264         static char buf[12];
 265
 266         if (modes <= 0)
 267                 snprintf(buf, sizeof(buf), "unknown");
 268         else
 269                 snprintf(buf, sizeof(buf), "802.11%s%s%s%s",
 270                         (modes & IWINFO_80211_A) ? "a" : "",
 271                         (modes & IWINFO_80211_B) ? "b" : "",
 272                         (modes & IWINFO_80211_G) ? "g" : "",
 273                         (modes & IWINFO_80211_N) ? "n" : "");
 274
 275         return buf;
 276 }
 277
 278
 279 static const char * print_type(const struct iwinfo_ops *iw, const char *ifname)
 280 {
 281         const char *type = iwinfo_type(ifname);
 282         return type ? type : "unknown";
 283 }
 284
 285 static char * print_hardware_id(const struct iwinfo_ops *iw, const char *ifname)
 286 {
 287         static char buf[20];
 288         struct iwinfo_hardware_id ids;
 289
 290         if (!iw->hardware_id(ifname, (char *)&ids))
 291         {
 292                 snprintf(buf, sizeof(buf), "%04X:%04X %04X:%04X",
 293                         ids.vendor_id, ids.device_id,
 294                         ids.subsystem_vendor_id, ids.subsystem_device_id);
 295         }
 296         else
 297         {
 298                 snprintf(buf, sizeof(buf), "unknown");
 299         }
 300
 301         return buf;
 302 }
 303
 304 static char * print_hardware_name(const struct iwinfo_ops *iw, const char *ifname)
 305 {
 306         static char buf[128];
 307
 308         if (iw->hardware_name(ifname, buf))
 309                 snprintf(buf, sizeof(buf), "unknown");
 310
 311         return buf;
 312 }
 313
 314 static char * print_ssid(const struct iwinfo_ops *iw, const char *ifname)
 315 {
 316         char buf[IWINFO_ESSID_MAX_SIZE+1] = { 0 };
 317
 318         if (iw->ssid(ifname, buf))
 319                 memset(buf, 0, sizeof(buf));
 320
 321         return format_ssid(buf);
 322 }
 323
 324 static char * print_bssid(const struct iwinfo_ops *iw, const char *ifname)
 325 {
 326         static char buf[18] = { 0 };
 327
 328         if (iw->bssid(ifname, buf))
 329                 snprintf(buf, sizeof(buf), "00:00:00:00:00:00");
 330
 331         return buf;
 332 }
 333
 334 static char * print_mode(const struct iwinfo_ops *iw, const char *ifname)
 335 {
 336         static char buf[128];
 337
 338         if (iw->mode(ifname, buf))
 339                 snprintf(buf, sizeof(buf), "unknown");
 340
 341         return buf;
 342 }
 343
 344 static char * print_channel(const struct iwinfo_ops *iw, const char *ifname)
 345 {
 346         int ch;
 347         if (iw->channel(ifname, &ch))
 348                 ch = -1;
 349
 350         return format_channel(ch);
 351 }
 352
 353 static char * print_frequency(const struct iwinfo_ops *iw, const char *ifname)
 354 {
 355         int freq;
 356         if (iw->frequency(ifname, &freq))
 357                 freq = -1;
 358
 359         return format_frequency(freq);
 360 }
 361
 362 static char * print_txpower(const struct iwinfo_ops *iw, const char *ifname)
 363 {
 364         int pwr;
 365         if (iw->txpower(ifname, &pwr))
 366                 pwr = -1;
 367
 368         return format_txpower(pwr);
 369 }
 370
 371 static char * print_quality(const struct iwinfo_ops *iw, const char *ifname)
 372 {
 373         int qual;
 374         if (iw->quality(ifname, &qual))
 375                 qual = -1;
 376
 377         return format_quality(qual);
 378 }
 379
 380 static char * print_quality_max(const struct iwinfo_ops *iw, const char *ifname)
 381 {
 382         int qmax;
 383         if (iw->quality_max(ifname, &qmax))
 384                 qmax = -1;
 385
 386         return format_quality_max(qmax);
 387 }
 388
 389 static char * print_signal(const struct iwinfo_ops *iw, const char *ifname)
 390 {
 391         int sig;
 392         if (iw->signal(ifname, &sig))
 393                 sig = 0;
 394
 395         return format_signal(sig);
 396 }
 397
 398 static char * print_noise(const struct iwinfo_ops *iw, const char *ifname)
 399 {
 400         int noise;
 401         if (iw->noise(ifname, &noise))
 402                 noise = 0;
 403
 404         return format_noise(noise);
 405 }
 406
 407 static char * print_rate(const struct iwinfo_ops *iw, const char *ifname)
 408 {
 409         int rate;
 410         if (iw->bitrate(ifname, &rate))
 411                 rate = -1;
 412
 413         return format_rate(rate);
 414 }
 415
 416 static char * print_encryption(const struct iwinfo_ops *iw, const char *ifname)
 417 {
 418         struct iwinfo_crypto_entry c = { 0 };
 419         if (iw->encryption(ifname, (char *)&c))
 420                 return format_encryption(NULL);
 421
 422         return format_encryption(&c);
 423 }
 424
 425 static char * print_hwmodes(const struct iwinfo_ops *iw, const char *ifname)
 426 {
 427         int modes;
 428         if (iw->hwmodelist(ifname, &modes))
 429                 modes = -1;
 430
 431         return format_hwmodes(modes);
 432 }
 433
 434 static char * print_mbssid_supp(const struct iwinfo_ops *iw, const char *ifname)
 435 {
 436         int supp;
 437         static char buf[4];
 438
 439         if (iw->mbssid_support(ifname, &supp))
 440                 snprintf(buf, sizeof(buf), "no");
 441         else
 442                 snprintf(buf, sizeof(buf), "%s", supp ? "yes" : "no");
 443
 444         return buf;
 445 }
 446
 447
 448 static void print_info(const struct iwinfo_ops *iw, const char *ifname)
 449 {
 450         printf("%-9s ESSID: %s\n",
 451                 ifname,
 452                 print_ssid(iw, ifname));
 453         printf("          Access Point: %s\n",
 454                 print_bssid(iw, ifname));
 455         printf("          Mode: %s  Channel: %s (%s)\n",
 456                 print_mode(iw, ifname),
 457                 print_channel(iw, ifname),
 458                 print_frequency(iw, ifname));
 459         printf("          Tx-Power: %s  Link Quality: %s/%s\n",
 460                 print_txpower(iw, ifname),
 461                 print_quality(iw, ifname),
 462                 print_quality_max(iw, ifname));
 463         printf("          Signal: %s  Noise: %s\n",
 464                 print_signal(iw, ifname),
 465                 print_noise(iw, ifname));
 466         printf("          Bit Rate: %s\n",
 467                 print_rate(iw, ifname));
 468         printf("          Encryption: %s\n",
 469                 print_encryption(iw, ifname));
 470         printf("          Type: %s  HW Mode(s): %s\n",
 471                 print_type(iw, ifname),
 472                 print_hwmodes(iw, ifname));
 473         printf("          Hardware: %s [%s]\n",
 474                 print_hardware_id(iw, ifname),
 475                 print_hardware_name(iw, ifname));
 476         printf("          Supports VAPs: %s\n",
 477                 print_mbssid_supp(iw, ifname));
 478 }
 479
 480
 481 static void print_scanlist(const struct iwinfo_ops *iw, const char *ifname)
 482 {
 483         int i, x, len;
 484         char buf[IWINFO_BUFSIZE];
 485         struct iwinfo_scanlist_entry *e;
 486
 487         if (iw->scanlist(ifname, buf, &len))
 488         {
 489                 printf("Scanning not possible\n\n");
 490                 return;
 491         }
 492         else if (len <= 0)
 493         {
 494                 printf("No scan results\n\n");
 495                 return;
 496         }
 497
 498         for (i = 0, x = 1; i < len; i += sizeof(struct iwinfo_scanlist_entry), x++)
 499         {
 500                 e = (struct iwinfo_scanlist_entry *) &buf[i];
 501
 502                 printf("Cell %02d - Address: %s\n",
 503                         x,
 504                         format_bssid(e->mac));
 505                 printf("          ESSID: %s\n",
 506                         format_ssid(e->ssid));
 507                 printf("          Mode: %s  Channel: %s\n",
 508                         e->mode ? (char *)e->mode : "unknown",
 509                         format_channel(e->channel));
 510                 printf("          Signal: %s  Quality: %s/%s\n",
 511                         format_signal(e->signal - 0x100),
 512                         format_quality(e->quality),
 513                         format_quality_max(e->quality_max));
 514                 printf("          Encryption: %s\n\n",
 515                         format_encryption(&e->crypto));
 516         }
 517 }
 518
 519
 520 static void print_txpwrlist(const struct iwinfo_ops *iw, const char *ifname)
 521 {
 522         int len, pwr, i;
 523         char buf[IWINFO_BUFSIZE];
 524         struct iwinfo_txpwrlist_entry *e;
 525
 526         if (iw->txpwrlist(ifname, buf, &len) || len <= 0)
 527         {
 528                 printf("No TX power information available\n");
 529                 return;
 530         }
 531
 532         if (iw->txpower(ifname, &pwr))
 533                 pwr = -1;
 534
 535         for (i = 0; i < len; i += sizeof(struct iwinfo_txpwrlist_entry))
 536         {
 537                 e = (struct iwinfo_txpwrlist_entry *) &buf[i];
 538
 539                 printf("%s%3d dBm (%4d mW)\n",
 540                         (pwr == e->dbm) ? "*" : " ",
 541                         e->dbm,
 542                         e->mw);
 543         }
 544 }
 545
 546
 547 static void print_freqlist(const struct iwinfo_ops *iw, const char *ifname)
 548 {
 549         int i, len, ch;
 550         char buf[IWINFO_BUFSIZE];
 551         struct iwinfo_freqlist_entry *e;
 552
 553         if (iw->freqlist(ifname, buf, &len) || len <= 0)
 554         {
 555                 printf("No frequency information available\n");
 556                 return;
 557         }
 558
 559         if (iw->channel(ifname, &ch))
 560                 ch = -1;
 561
 562         for (i = 0; i < len; i += sizeof(struct iwinfo_freqlist_entry))
 563         {
 564                 e = (struct iwinfo_freqlist_entry *) &buf[i];
 565
 566                 printf("%s %s (Channel %s)%s\n",
 567                         (ch == e->channel) ? "*" : " ",
 568                         format_frequency(e->mhz),
 569                         format_channel(e->channel),
 570                         e->restricted ? " [restricted]" : "");
 571         }
 572 }
 573
 574
 575 static void print_assoclist(const struct iwinfo_ops *iw, const char *ifname)
 576 {
 577         int i, len;
 578         char buf[IWINFO_BUFSIZE];
 579         struct iwinfo_assoclist_entry *e;
 580
 581         if (iw->assoclist(ifname, buf, &len))
 582         {
 583                 printf("No information available\n");
 584                 return;
 585         }
 586         else if (len <= 0)
 587         {
 588                 printf("No station connected\n");
 589                 return;
 590         }
 591
 592         for (i = 0; i < len; i += sizeof(struct iwinfo_assoclist_entry))
 593         {
 594                 e = (struct iwinfo_assoclist_entry *) &buf[i];
 595
 596                 printf("%s  %s / %s (SNR %d)\n",
 597                         format_bssid(e->mac),
 598                         format_signal(e->signal),
 599                         format_noise(e->noise),
 600                         (e->signal - e->noise));
 601         }
 602 }
 603
 604
 605 static char * lookup_country(char *buf, int len, int iso3166)
 606 {
 607         int i;
 608         struct iwinfo_country_entry *c;
 609
 610         for (i = 0; i < len; i += sizeof(struct iwinfo_country_entry))
 611         {
 612                 c = (struct iwinfo_country_entry *) &buf[i];
 613
 614                 if (c->iso3166 == iso3166)
 615                         return c->ccode;
 616         }
 617
 618         return NULL;
 619 }
 620
 621 static void print_countrylist(const struct iwinfo_ops *iw, const char *ifname)
 622 {
 623         int len;
 624         char buf[IWINFO_BUFSIZE];
 625         char *ccode;
 626         char curcode[3];
 627         const struct iwinfo_iso3166_label *l;
 628
 629         if (iw->countrylist(ifname, buf, &len))
 630         {
 631                 printf("No country code information available\n");
 632                 return;
 633         }
 634
 635         if (iw->country(ifname, curcode))
 636                 memset(curcode, 0, sizeof(curcode));
 637
 638         for (l = IWINFO_ISO3166_NAMES; l->iso3166; l++)
 639         {
 640                 if ((ccode = lookup_country(buf, len, l->iso3166)) != NULL)
 641                 {
 642                         printf("%s %4s  %c%c\n",
 643                                 strncmp(ccode, curcode, 2) ? " " : "*",
 644                                 ccode, (l->iso3166 / 256), (l->iso3166 % 256));
 645                 }
 646         }
 647 }
 648
 649
 650 int main(int argc, char **argv)
 651 {
 652         int i;
 653         const struct iwinfo_ops *iw;
 654
 655         if (argc < 3)
 656         {
 657                 fprintf(stderr,
 658                         "Usage:\n"
 659                         "       iwinfo <device> info\n"
 660                         "       iwinfo <device> scan\n"
 661                         "       iwinfo <device> txpowerlist\n"
 662                         "       iwinfo <device> freqlist\n"
 663                         "       iwinfo <device> assoclist\n"
 664                         "       iwinfo <device> countrylist\n"
 665                 );
 666
 667                 return 1;
 668         }
 669
 670         iw = iwinfo_backend(argv[1]);
 671
 672         if (!iw)
 673         {
 674                 fprintf(stderr, "No such wireless device: %s\n", argv[1]);
 675                 return 1;
 676         }
 677
 678         for (i = 2; i < argc; i++)
 679         {
 680                 switch(argv[i][0])
 681                 {
 682                 case 'i':
 683                         print_info(iw, argv[1]);
 684                         break;
 685
 686                 case 's':
 687                         print_scanlist(iw, argv[1]);
 688                         break;
 689
 690                 case 't':
 691                         print_txpwrlist(iw, argv[1]);
 692                         break;
 693
 694                 case 'f':
 695                         print_freqlist(iw, argv[1]);
 696                         break;
 697
 698                 case 'a':
 699                         print_assoclist(iw, argv[1]);
 700                         break;
 701
 702                 case 'c':
 703                         print_countrylist(iw, argv[1]);
 704                         break;
 705
 706                 default:
 707                         fprintf(stderr, "Unknown command: %s\n", argv[i]);
 708                         return 1;
 709                 }
 710         }
 711
 712         iwinfo_finish();
 713
 714         return 0;
 715 }