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_ssid(const struct iwinfo_ops *iw, const char *ifname)
 286 {
 287         char buf[IWINFO_ESSID_MAX_SIZE+1] = { 0 };
 288
 289         if (iw->ssid(ifname, buf))
 290                 memset(buf, 0, sizeof(buf));
 291
 292         return format_ssid(buf);
 293 }
 294
 295 static char * print_bssid(const struct iwinfo_ops *iw, const char *ifname)
 296 {
 297         static char buf[18] = { 0 };
 298
 299         if (iw->bssid(ifname, buf))
 300                 snprintf(buf, sizeof(buf), "00:00:00:00:00:00");
 301
 302         return buf;
 303 }
 304
 305 static char * print_mode(const struct iwinfo_ops *iw, const char *ifname)
 306 {
 307         static char buf[128];
 308
 309         if (iw->mode(ifname, buf))
 310                 snprintf(buf, sizeof(buf), "unknown");
 311
 312         return buf;
 313 }
 314
 315 static char * print_channel(const struct iwinfo_ops *iw, const char *ifname)
 316 {
 317         int ch;
 318         if (iw->channel(ifname, &ch))
 319                 ch = -1;
 320
 321         return format_channel(ch);
 322 }
 323
 324 static char * print_frequency(const struct iwinfo_ops *iw, const char *ifname)
 325 {
 326         int freq;
 327         if (iw->frequency(ifname, &freq))
 328                 freq = -1;
 329
 330         return format_frequency(freq);
 331 }
 332
 333 static char * print_txpower(const struct iwinfo_ops *iw, const char *ifname)
 334 {
 335         int pwr;
 336         if (iw->txpower(ifname, &pwr))
 337                 pwr = -1;
 338
 339         return format_txpower(pwr);
 340 }
 341
 342 static char * print_quality(const struct iwinfo_ops *iw, const char *ifname)
 343 {
 344         int qual;
 345         if (iw->quality(ifname, &qual))
 346                 qual = -1;
 347
 348         return format_quality(qual);
 349 }
 350
 351 static char * print_quality_max(const struct iwinfo_ops *iw, const char *ifname)
 352 {
 353         int qmax;
 354         if (iw->quality_max(ifname, &qmax))
 355                 qmax = -1;
 356
 357         return format_quality_max(qmax);
 358 }
 359
 360 static char * print_signal(const struct iwinfo_ops *iw, const char *ifname)
 361 {
 362         int sig;
 363         if (iw->signal(ifname, &sig))
 364                 sig = 0;
 365
 366         return format_signal(sig);
 367 }
 368
 369 static char * print_noise(const struct iwinfo_ops *iw, const char *ifname)
 370 {
 371         int noise;
 372         if (iw->noise(ifname, &noise))
 373                 noise = 0;
 374
 375         return format_noise(noise);
 376 }
 377
 378 static char * print_rate(const struct iwinfo_ops *iw, const char *ifname)
 379 {
 380         int rate;
 381         if (iw->bitrate(ifname, &rate))
 382                 rate = -1;
 383
 384         return format_rate(rate);
 385 }
 386
 387 static char * print_encryption(const struct iwinfo_ops *iw, const char *ifname)
 388 {
 389         struct iwinfo_crypto_entry c = { 0 };
 390         if (iw->encryption(ifname, (char *)&c))
 391                 return format_encryption(NULL);
 392
 393         return format_encryption(&c);
 394 }
 395
 396 static char * print_hwmodes(const struct iwinfo_ops *iw, const char *ifname)
 397 {
 398         int modes;
 399         if (iw->hwmodelist(ifname, &modes))
 400                 modes = -1;
 401
 402         return format_hwmodes(modes);
 403 }
 404
 405 static char * print_mbssid_supp(const struct iwinfo_ops *iw, const char *ifname)
 406 {
 407         int supp;
 408         static char buf[4];
 409
 410         if (iw->mbssid_support(ifname, &supp))
 411                 snprintf(buf, sizeof(buf), "no");
 412         else
 413                 snprintf(buf, sizeof(buf), "%s", supp ? "yes" : "no");
 414
 415         return buf;
 416 }
 417
 418
 419 static void print_info(const struct iwinfo_ops *iw, const char *ifname)
 420 {
 421         printf("%-9s ESSID: %s\n",
 422                 ifname,
 423                 print_ssid(iw, ifname));
 424         printf("          Access Point: %s\n",
 425                 print_bssid(iw, ifname));
 426         printf("          Type: %s  HW Mode(s): %s\n",
 427                 print_type(iw, ifname),
 428                 print_hwmodes(iw, ifname));
 429         printf("          Mode: %s  Channel: %s (%s)\n",
 430                 print_mode(iw, ifname),
 431                 print_channel(iw, ifname),
 432                 print_frequency(iw, ifname));
 433         printf("          Tx-Power: %s  Link Quality: %s/%s\n",
 434                 print_txpower(iw, ifname),
 435                 print_quality(iw, ifname),
 436                 print_quality_max(iw, ifname));
 437         printf("          Signal: %s  Noise: %s\n",
 438                 print_signal(iw, ifname),
 439                 print_noise(iw, ifname));
 440         printf("          Bit Rate: %s\n",
 441                 print_rate(iw, ifname));
 442         printf("          Encryption: %s\n",
 443                 print_encryption(iw, ifname));
 444         printf("          Supports VAPs: %s\n",
 445                 print_mbssid_supp(iw, ifname));
 446 }
 447
 448
 449 static void print_scanlist(const struct iwinfo_ops *iw, const char *ifname)
 450 {
 451         int i, x, len;
 452         char buf[IWINFO_BUFSIZE];
 453         struct iwinfo_scanlist_entry *e;
 454
 455         if (iw->scanlist(ifname, buf, &len))
 456         {
 457                 printf("Scanning not possible\n\n");
 458                 return;
 459         }
 460         else if (len <= 0)
 461         {
 462                 printf("No scan results\n\n");
 463                 return;
 464         }
 465
 466         for (i = 0, x = 1; i < len; i += sizeof(struct iwinfo_scanlist_entry), x++)
 467         {
 468                 e = (struct iwinfo_scanlist_entry *) &buf[i];
 469
 470                 printf("Cell %02d - Address: %s\n",
 471                         x,
 472                         format_bssid(e->mac));
 473                 printf("          ESSID: %s\n",
 474                         format_ssid(e->ssid));
 475                 printf("          Mode: %s  Channel: %s\n",
 476                         e->mode ? (char *)e->mode : "unknown",
 477                         format_channel(e->channel));
 478                 printf("          Signal: %s  Quality: %s/%s\n",
 479                         format_signal(e->signal - 0x100),
 480                         format_quality(e->quality),
 481                         format_quality_max(e->quality_max));
 482                 printf("          Encryption: %s\n\n",
 483                         format_encryption(&e->crypto));
 484         }
 485 }
 486
 487
 488 static void print_txpwrlist(const struct iwinfo_ops *iw, const char *ifname)
 489 {
 490         int len, pwr, i;
 491         char buf[IWINFO_BUFSIZE];
 492         struct iwinfo_txpwrlist_entry *e;
 493
 494         if (iw->txpwrlist(ifname, buf, &len) || len <= 0)
 495         {
 496                 printf("No TX power information available\n");
 497                 return;
 498         }
 499
 500         if (iw->txpower(ifname, &pwr))
 501                 pwr = -1;
 502
 503         for (i = 0; i < len; i += sizeof(struct iwinfo_txpwrlist_entry))
 504         {
 505                 e = (struct iwinfo_txpwrlist_entry *) &buf[i];
 506
 507                 printf("%s%3d dBm (%4d mW)\n",
 508                         (pwr == e->dbm) ? "*" : " ",
 509                         e->dbm,
 510                         e->mw);
 511         }
 512 }
 513
 514
 515 static void print_freqlist(const struct iwinfo_ops *iw, const char *ifname)
 516 {
 517         int i, len, ch;
 518         char buf[IWINFO_BUFSIZE];
 519         struct iwinfo_freqlist_entry *e;
 520
 521         if (iw->freqlist(ifname, buf, &len) || len <= 0)
 522         {
 523                 printf("No frequency information available\n");
 524                 return;
 525         }
 526
 527         if (iw->channel(ifname, &ch))
 528                 ch = -1;
 529
 530         for (i = 0; i < len; i += sizeof(struct iwinfo_freqlist_entry))
 531         {
 532                 e = (struct iwinfo_freqlist_entry *) &buf[i];
 533
 534                 printf("%s %s (Channel %s)%s\n",
 535                         (ch == e->channel) ? "*" : " ",
 536                         format_frequency(e->mhz),
 537                         format_channel(e->channel),
 538                         e->restricted ? " [restricted]" : "");
 539         }
 540 }
 541
 542
 543 static void print_assoclist(const struct iwinfo_ops *iw, const char *ifname)
 544 {
 545         int i, len;
 546         char buf[IWINFO_BUFSIZE];
 547         struct iwinfo_assoclist_entry *e;
 548
 549         if (iw->assoclist(ifname, buf, &len))
 550         {
 551                 printf("No information available\n");
 552                 return;
 553         }
 554         else if (len <= 0)
 555         {
 556                 printf("No station connected\n");
 557                 return;
 558         }
 559
 560         for (i = 0; i < len; i += sizeof(struct iwinfo_assoclist_entry))
 561         {
 562                 e = (struct iwinfo_assoclist_entry *) &buf[i];
 563
 564                 printf("%s  %s / %s (SNR %d)\n",
 565                         format_bssid(e->mac),
 566                         format_signal(e->signal),
 567                         format_noise(e->noise),
 568                         (e->signal - e->noise));
 569         }
 570 }
 571
 572
 573 static char * lookup_country(char *buf, int len, int iso3166)
 574 {
 575         int i;
 576         struct iwinfo_country_entry *c;
 577
 578         for (i = 0; i < len; i += sizeof(struct iwinfo_country_entry))
 579         {
 580                 c = (struct iwinfo_country_entry *) &buf[i];
 581
 582                 if (c->iso3166 == iso3166)
 583                         return c->ccode;
 584         }
 585
 586         return NULL;
 587 }
 588
 589 static void print_countrylist(const struct iwinfo_ops *iw, const char *ifname)
 590 {
 591         int len;
 592         char buf[IWINFO_BUFSIZE];
 593         char *ccode;
 594         char curcode[3];
 595         const struct iwinfo_iso3166_label *l;
 596
 597         if (iw->countrylist(ifname, buf, &len))
 598         {
 599                 printf("No country code information available\n");
 600                 return;
 601         }
 602
 603         if (iw->country(ifname, curcode))
 604                 memset(curcode, 0, sizeof(curcode));
 605
 606         for (l = IWINFO_ISO3166_NAMES; l->iso3166; l++)
 607         {
 608                 if ((ccode = lookup_country(buf, len, l->iso3166)) != NULL)
 609                 {
 610                         printf("%s %4s  %c%c\n",
 611                                 strncmp(ccode, curcode, 2) ? " " : "*",
 612                                 ccode, (l->iso3166 / 256), (l->iso3166 % 256));
 613                 }
 614         }
 615 }
 616
 617
 618 int main(int argc, char **argv)
 619 {
 620         int i;
 621         const struct iwinfo_ops *iw;
 622
 623         if (argc < 3)
 624         {
 625                 fprintf(stderr,
 626                         "Usage:\n"
 627                         "       iwinfo <device> info\n"
 628                         "       iwinfo <device> scan\n"
 629                         "       iwinfo <device> txpowerlist\n"
 630                         "       iwinfo <device> freqlist\n"
 631                         "       iwinfo <device> assoclist\n"
 632                         "       iwinfo <device> countrylist\n"
 633                 );
 634
 635                 return 1;
 636         }
 637
 638         iw = iwinfo_backend(argv[1]);
 639
 640         if (!iw)
 641         {
 642                 fprintf(stderr, "No such wireless device: %s\n", argv[1]);
 643                 return 1;
 644         }
 645
 646         for (i = 2; i < argc; i++)
 647         {
 648                 switch(argv[i][0])
 649                 {
 650                 case 'i':
 651                         print_info(iw, argv[1]);
 652                         break;
 653
 654                 case 's':
 655                         print_scanlist(iw, argv[1]);
 656                         break;
 657
 658                 case 't':
 659                         print_txpwrlist(iw, argv[1]);
 660                         break;
 661
 662                 case 'f':
 663                         print_freqlist(iw, argv[1]);
 664                         break;
 665
 666                 case 'a':
 667                         print_assoclist(iw, argv[1]);
 668                         break;
 669
 670                 case 'c':
 671                         print_countrylist(iw, argv[1]);
 672                         break;
 673
 674                 default:
 675                         fprintf(stderr, "Unknown command: %s\n", argv[i]);
 676                         return 1;
 677                 }
 678         }
 679
 680         iwinfo_finish();
 681
 682         return 0;
 683 }