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 #include <glob.h>
  21
  22 #include "iwinfo.h"
  23
  24
  25 static char * format_bssid(unsigned char *mac)
  26 {
  27         static char buf[18];
  28
  29         snprintf(buf, sizeof(buf), "%02X:%02X:%02X:%02X:%02X:%02X",
  30                 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
  31
  32         return buf;
  33 }
  34
  35 static char * format_ssid(char *ssid)
  36 {
  37         static char buf[IWINFO_ESSID_MAX_SIZE+3];
  38
  39         if (ssid && ssid[0])
  40                 snprintf(buf, sizeof(buf), "\"%s\"", ssid);
  41         else
  42                 snprintf(buf, sizeof(buf), "unknown");
  43
  44         return buf;
  45 }
  46
  47 static char * format_channel(int ch)
  48 {
  49         static char buf[8];
  50
  51         if (ch <= 0)
  52                 snprintf(buf, sizeof(buf), "unknown");
  53         else
  54                 snprintf(buf, sizeof(buf), "%d", ch);
  55
  56         return buf;
  57 }
  58
  59 static char * format_frequency(int freq)
  60 {
  61         static char buf[10];
  62
  63         if (freq <= 0)
  64                 snprintf(buf, sizeof(buf), "unknown");
  65         else
  66                 snprintf(buf, sizeof(buf), "%.3f GHz", ((float)freq / 1000.0));
  67
  68         return buf;
  69 }
  70
  71 static char * format_txpower(int pwr)
  72 {
  73         static char buf[10];
  74
  75         if (pwr < 0)
  76                 snprintf(buf, sizeof(buf), "unknown");
  77         else
  78                 snprintf(buf, sizeof(buf), "%d dBm", pwr);
  79
  80         return buf;
  81 }
  82
  83 static char * format_quality(int qual)
  84 {
  85         static char buf[8];
  86
  87         if (qual < 0)
  88                 snprintf(buf, sizeof(buf), "unknown");
  89         else
  90                 snprintf(buf, sizeof(buf), "%d", qual);
  91
  92         return buf;
  93 }
  94
  95 static char * format_quality_max(int qmax)
  96 {
  97         static char buf[8];
  98
  99         if (qmax < 0)
 100                 snprintf(buf, sizeof(buf), "unknown");
 101         else
 102                 snprintf(buf, sizeof(buf), "%d", qmax);
 103
 104         return buf;
 105 }
 106
 107 static char * format_signal(int sig)
 108 {
 109         static char buf[10];
 110
 111         if (!sig)
 112                 snprintf(buf, sizeof(buf), "unknown");
 113         else
 114                 snprintf(buf, sizeof(buf), "%d dBm", sig);
 115
 116         return buf;
 117 }
 118
 119 static char * format_noise(int noise)
 120 {
 121         static char buf[10];
 122
 123         if (!noise)
 124                 snprintf(buf, sizeof(buf), "unknown");
 125         else
 126                 snprintf(buf, sizeof(buf), "%d dBm", noise);
 127
 128         return buf;
 129 }
 130
 131 static char * format_rate(int rate)
 132 {
 133         static char buf[14];
 134
 135         if (rate <= 0)
 136                 snprintf(buf, sizeof(buf), "unknown");
 137         else
 138                 snprintf(buf, sizeof(buf), "%d.%d MBit/s",
 139                         rate / 1000, (rate % 1000) / 100);
 140
 141         return buf;
 142 }
 143
 144 static char * format_enc_ciphers(int ciphers)
 145 {
 146         static char str[128] = { 0 };
 147         char *pos = str;
 148
 149         if (ciphers & IWINFO_CIPHER_WEP40)
 150                 pos += sprintf(pos, "WEP-40, ");
 151
 152         if (ciphers & IWINFO_CIPHER_WEP104)
 153                 pos += sprintf(pos, "WEP-104, ");
 154
 155         if (ciphers & IWINFO_CIPHER_TKIP)
 156                 pos += sprintf(pos, "TKIP, ");
 157
 158         if (ciphers & IWINFO_CIPHER_CCMP)
 159                 pos += sprintf(pos, "CCMP, ");
 160
 161         if (ciphers & IWINFO_CIPHER_WRAP)
 162                 pos += sprintf(pos, "WRAP, ");
 163
 164         if (ciphers & IWINFO_CIPHER_AESOCB)
 165                 pos += sprintf(pos, "AES-OCB, ");
 166
 167         if (ciphers & IWINFO_CIPHER_CKIP)
 168                 pos += sprintf(pos, "CKIP, ");
 169
 170         if (!ciphers || (ciphers & IWINFO_CIPHER_NONE))
 171                 pos += sprintf(pos, "NONE, ");
 172
 173         *(pos - 2) = 0;
 174
 175         return str;
 176 }
 177
 178 static char * format_enc_suites(int suites)
 179 {
 180         static char str[64] = { 0 };
 181         char *pos = str;
 182
 183         if (suites & IWINFO_KMGMT_PSK)
 184                 pos += sprintf(pos, "PSK/");
 185
 186         if (suites & IWINFO_KMGMT_8021x)
 187                 pos += sprintf(pos, "802.1X/");
 188
 189         if (!suites || (suites & IWINFO_KMGMT_NONE))
 190                 pos += sprintf(pos, "NONE/");
 191
 192         *(pos - 1) = 0;
 193
 194         return str;
 195 }
 196
 197 static char * format_encryption(struct iwinfo_crypto_entry *c)
 198 {
 199         static char buf[512];
 200
 201         if (!c)
 202         {
 203                 snprintf(buf, sizeof(buf), "unknown");
 204         }
 205         else if (c->enabled)
 206         {
 207                 /* WEP */
 208                 if (c->auth_algs && !c->wpa_version)
 209                 {
 210                         if ((c->auth_algs & IWINFO_AUTH_OPEN) &&
 211                                 (c->auth_algs & IWINFO_AUTH_SHARED))
 212                         {
 213                                 snprintf(buf, sizeof(buf), "WEP Open/Shared (%s)",
 214                                         format_enc_ciphers(c->pair_ciphers));
 215                         }
 216                         else if (c->auth_algs & IWINFO_AUTH_OPEN)
 217                         {
 218                                 snprintf(buf, sizeof(buf), "WEP Open System (%s)",
 219                                         format_enc_ciphers(c->pair_ciphers));
 220                         }
 221                         else if (c->auth_algs & IWINFO_AUTH_SHARED)
 222                         {
 223                                 snprintf(buf, sizeof(buf), "WEP Shared Auth (%s)",
 224                                         format_enc_ciphers(c->pair_ciphers));
 225                         }
 226                 }
 227
 228                 /* WPA */
 229                 else if (c->wpa_version)
 230                 {
 231                         switch (c->wpa_version) {
 232                                 case 3:
 233                                         snprintf(buf, sizeof(buf), "mixed WPA/WPA2 %s (%s)",
 234                                                 format_enc_suites(c->auth_suites),
 235                                                 format_enc_ciphers(c->pair_ciphers | c->group_ciphers));
 236                                         break;
 237
 238                                 case 2:
 239                                         snprintf(buf, sizeof(buf), "WPA2 %s (%s)",
 240                                                 format_enc_suites(c->auth_suites),
 241                                                 format_enc_ciphers(c->pair_ciphers | c->group_ciphers));
 242                                         break;
 243
 244                                 case 1:
 245                                         snprintf(buf, sizeof(buf), "WPA %s (%s)",
 246                                                 format_enc_suites(c->auth_suites),
 247                                                 format_enc_ciphers(c->pair_ciphers | c->group_ciphers));
 248                                         break;
 249                         }
 250                 }
 251                 else
 252                 {
 253                         snprintf(buf, sizeof(buf), "none");
 254                 }
 255         }
 256         else
 257         {
 258                 snprintf(buf, sizeof(buf), "none");
 259         }
 260
 261         return buf;
 262 }
 263
 264 static char * format_hwmodes(int modes)
 265 {
 266         static char buf[12];
 267
 268         if (modes <= 0)
 269                 snprintf(buf, sizeof(buf), "unknown");
 270         else
 271                 snprintf(buf, sizeof(buf), "802.11%s%s%s%s%s",
 272                         (modes & IWINFO_80211_A) ? "a" : "",
 273                         (modes & IWINFO_80211_B) ? "b" : "",
 274                         (modes & IWINFO_80211_G) ? "g" : "",
 275                         (modes & IWINFO_80211_N) ? "n" : "",
 276                         (modes & IWINFO_80211_AC) ? "ac" : "");
 277
 278         return buf;
 279 }
 280
 281 static char * format_assocrate(struct iwinfo_rate_entry *r)
 282 {
 283         static char buf[40];
 284         char *p = buf;
 285         int l = sizeof(buf);
 286
 287         if (r->rate <= 0)
 288         {
 289                 snprintf(buf, sizeof(buf), "unknown");
 290         }
 291         else
 292         {
 293                 p += snprintf(p, l, "%s", format_rate(r->rate));
 294                 l = sizeof(buf) - (p - buf);
 295
 296                 if (r->mcs >= 0)
 297                 {
 298                         p += snprintf(p, l, ", MCS %d, %dMHz", r->mcs, 20 + r->is_40mhz*20);
 299                         l = sizeof(buf) - (p - buf);
 300
 301                         if (r->is_short_gi)
 302                                 p += snprintf(p, l, ", short GI");
 303                 }
 304         }
 305
 306         return buf;
 307 }
 308
 309
 310 static const char * print_type(const struct iwinfo_ops *iw, const char *ifname)
 311 {
 312         const char *type = iwinfo_type(ifname);
 313         return type ? type : "unknown";
 314 }
 315
 316 static char * print_hardware_id(const struct iwinfo_ops *iw, const char *ifname)
 317 {
 318         static char buf[20];
 319         struct iwinfo_hardware_id ids;
 320
 321         if (!iw->hardware_id(ifname, (char *)&ids))
 322         {
 323                 snprintf(buf, sizeof(buf), "%04X:%04X %04X:%04X",
 324                         ids.vendor_id, ids.device_id,
 325                         ids.subsystem_vendor_id, ids.subsystem_device_id);
 326         }
 327         else
 328         {
 329                 snprintf(buf, sizeof(buf), "unknown");
 330         }
 331
 332         return buf;
 333 }
 334
 335 static char * print_hardware_name(const struct iwinfo_ops *iw, const char *ifname)
 336 {
 337         static char buf[128];
 338
 339         if (iw->hardware_name(ifname, buf))
 340                 snprintf(buf, sizeof(buf), "unknown");
 341
 342         return buf;
 343 }
 344
 345 static char * print_txpower_offset(const struct iwinfo_ops *iw, const char *ifname)
 346 {
 347         int off;
 348         static char buf[12];
 349
 350         if (iw->txpower_offset(ifname, &off))
 351                 snprintf(buf, sizeof(buf), "unknown");
 352         else if (off != 0)
 353                 snprintf(buf, sizeof(buf), "%d dB", off);
 354         else
 355                 snprintf(buf, sizeof(buf), "none");
 356
 357         return buf;
 358 }
 359
 360 static char * print_frequency_offset(const struct iwinfo_ops *iw, const char *ifname)
 361 {
 362         int off;
 363         static char buf[12];
 364
 365         if (iw->frequency_offset(ifname, &off))
 366                 snprintf(buf, sizeof(buf), "unknown");
 367         else if (off != 0)
 368                 snprintf(buf, sizeof(buf), "%.3f GHz", ((float)off / 1000.0));
 369         else
 370                 snprintf(buf, sizeof(buf), "none");
 371
 372         return buf;
 373 }
 374
 375 static char * print_ssid(const struct iwinfo_ops *iw, const char *ifname)
 376 {
 377         char buf[IWINFO_ESSID_MAX_SIZE+1] = { 0 };
 378
 379         if (iw->ssid(ifname, buf))
 380                 memset(buf, 0, sizeof(buf));
 381
 382         return format_ssid(buf);
 383 }
 384
 385 static char * print_bssid(const struct iwinfo_ops *iw, const char *ifname)
 386 {
 387         static char buf[18] = { 0 };
 388
 389         if (iw->bssid(ifname, buf))
 390                 snprintf(buf, sizeof(buf), "00:00:00:00:00:00");
 391
 392         return buf;
 393 }
 394
 395 static char * print_mode(const struct iwinfo_ops *iw, const char *ifname)
 396 {
 397         int mode;
 398         static char buf[128];
 399
 400         if (iw->mode(ifname, &mode))
 401                 mode = IWINFO_OPMODE_UNKNOWN;
 402
 403         snprintf(buf, sizeof(buf), "%s", IWINFO_OPMODE_NAMES[mode]);
 404
 405         return buf;
 406 }
 407
 408 static char * print_channel(const struct iwinfo_ops *iw, const char *ifname)
 409 {
 410         int ch;
 411         if (iw->channel(ifname, &ch))
 412                 ch = -1;
 413
 414         return format_channel(ch);
 415 }
 416
 417 static char * print_frequency(const struct iwinfo_ops *iw, const char *ifname)
 418 {
 419         int freq;
 420         if (iw->frequency(ifname, &freq))
 421                 freq = -1;
 422
 423         return format_frequency(freq);
 424 }
 425
 426 static char * print_txpower(const struct iwinfo_ops *iw, const char *ifname)
 427 {
 428         int pwr, off;
 429         if (iw->txpower_offset(ifname, &off))
 430                 off = 0;
 431
 432         if (iw->txpower(ifname, &pwr))
 433                 pwr = -1;
 434         else
 435                 pwr += off;
 436
 437         return format_txpower(pwr);
 438 }
 439
 440 static char * print_quality(const struct iwinfo_ops *iw, const char *ifname)
 441 {
 442         int qual;
 443         if (iw->quality(ifname, &qual))
 444                 qual = -1;
 445
 446         return format_quality(qual);
 447 }
 448
 449 static char * print_quality_max(const struct iwinfo_ops *iw, const char *ifname)
 450 {
 451         int qmax;
 452         if (iw->quality_max(ifname, &qmax))
 453                 qmax = -1;
 454
 455         return format_quality_max(qmax);
 456 }
 457
 458 static char * print_signal(const struct iwinfo_ops *iw, const char *ifname)
 459 {
 460         int sig;
 461         if (iw->signal(ifname, &sig))
 462                 sig = 0;
 463
 464         return format_signal(sig);
 465 }
 466
 467 static char * print_noise(const struct iwinfo_ops *iw, const char *ifname)
 468 {
 469         int noise;
 470         if (iw->noise(ifname, &noise))
 471                 noise = 0;
 472
 473         return format_noise(noise);
 474 }
 475
 476 static char * print_rate(const struct iwinfo_ops *iw, const char *ifname)
 477 {
 478         int rate;
 479         if (iw->bitrate(ifname, &rate))
 480                 rate = -1;
 481
 482         return format_rate(rate);
 483 }
 484
 485 static char * print_encryption(const struct iwinfo_ops *iw, const char *ifname)
 486 {
 487         struct iwinfo_crypto_entry c = { 0 };
 488         if (iw->encryption(ifname, (char *)&c))
 489                 return format_encryption(NULL);
 490
 491         return format_encryption(&c);
 492 }
 493
 494 static char * print_hwmodes(const struct iwinfo_ops *iw, const char *ifname)
 495 {
 496         int modes;
 497         if (iw->hwmodelist(ifname, &modes))
 498                 modes = -1;
 499
 500         return format_hwmodes(modes);
 501 }
 502
 503 static char * print_mbssid_supp(const struct iwinfo_ops *iw, const char *ifname)
 504 {
 505         int supp;
 506         static char buf[4];
 507
 508         if (iw->mbssid_support(ifname, &supp))
 509                 snprintf(buf, sizeof(buf), "no");
 510         else
 511                 snprintf(buf, sizeof(buf), "%s", supp ? "yes" : "no");
 512
 513         return buf;
 514 }
 515
 516 static char * print_phyname(const struct iwinfo_ops *iw, const char *ifname)
 517 {
 518         static char buf[32];
 519
 520         if (!iw->phyname(ifname, buf))
 521                 return buf;
 522
 523         return "?";
 524 }
 525
 526
 527 static void print_info(const struct iwinfo_ops *iw, const char *ifname)
 528 {
 529         printf("%-9s ESSID: %s\n",
 530                 ifname,
 531                 print_ssid(iw, ifname));
 532         printf("          Access Point: %s\n",
 533                 print_bssid(iw, ifname));
 534         printf("          Mode: %s  Channel: %s (%s)\n",
 535                 print_mode(iw, ifname),
 536                 print_channel(iw, ifname),
 537                 print_frequency(iw, ifname));
 538         printf("          Tx-Power: %s  Link Quality: %s/%s\n",
 539                 print_txpower(iw, ifname),
 540                 print_quality(iw, ifname),
 541                 print_quality_max(iw, ifname));
 542         printf("          Signal: %s  Noise: %s\n",
 543                 print_signal(iw, ifname),
 544                 print_noise(iw, ifname));
 545         printf("          Bit Rate: %s\n",
 546                 print_rate(iw, ifname));
 547         printf("          Encryption: %s\n",
 548                 print_encryption(iw, ifname));
 549         printf("          Type: %s  HW Mode(s): %s\n",
 550                 print_type(iw, ifname),
 551                 print_hwmodes(iw, ifname));
 552         printf("          Hardware: %s [%s]\n",
 553                 print_hardware_id(iw, ifname),
 554                 print_hardware_name(iw, ifname));
 555         printf("          TX power offset: %s\n",
 556                 print_txpower_offset(iw, ifname));
 557         printf("          Frequency offset: %s\n",
 558                 print_frequency_offset(iw, ifname));
 559         printf("          Supports VAPs: %s  PHY name: %s\n",
 560                 print_mbssid_supp(iw, ifname),
 561                 print_phyname(iw, ifname));
 562 }
 563
 564
 565 static void print_scanlist(const struct iwinfo_ops *iw, const char *ifname)
 566 {
 567         int i, x, len;
 568         char buf[IWINFO_BUFSIZE];
 569         struct iwinfo_scanlist_entry *e;
 570
 571         if (iw->scanlist(ifname, buf, &len))
 572         {
 573                 printf("Scanning not possible\n\n");
 574                 return;
 575         }
 576         else if (len <= 0)
 577         {
 578                 printf("No scan results\n\n");
 579                 return;
 580         }
 581
 582         for (i = 0, x = 1; i < len; i += sizeof(struct iwinfo_scanlist_entry), x++)
 583         {
 584                 e = (struct iwinfo_scanlist_entry *) &buf[i];
 585
 586                 printf("Cell %02d - Address: %s\n",
 587                         x,
 588                         format_bssid(e->mac));
 589                 printf("          ESSID: %s\n",
 590                         format_ssid(e->ssid));
 591                 printf("          Mode: %s  Channel: %s\n",
 592                         IWINFO_OPMODE_NAMES[e->mode],
 593                         format_channel(e->channel));
 594                 printf("          Signal: %s  Quality: %s/%s\n",
 595                         format_signal(e->signal - 0x100),
 596                         format_quality(e->quality),
 597                         format_quality_max(e->quality_max));
 598                 printf("          Encryption: %s\n\n",
 599                         format_encryption(&e->crypto));
 600         }
 601 }
 602
 603
 604 static void print_txpwrlist(const struct iwinfo_ops *iw, const char *ifname)
 605 {
 606         int len, pwr, off, i;
 607         char buf[IWINFO_BUFSIZE];
 608         struct iwinfo_txpwrlist_entry *e;
 609
 610         if (iw->txpwrlist(ifname, buf, &len) || len <= 0)
 611         {
 612                 printf("No TX power information available\n");
 613                 return;
 614         }
 615
 616         if (iw->txpower(ifname, &pwr))
 617                 pwr = -1;
 618
 619         if (iw->txpower_offset(ifname, &off))
 620                 off = 0;
 621
 622         for (i = 0; i < len; i += sizeof(struct iwinfo_txpwrlist_entry))
 623         {
 624                 e = (struct iwinfo_txpwrlist_entry *) &buf[i];
 625
 626                 printf("%s%3d dBm (%4d mW)\n",
 627                         (pwr == e->dbm) ? "*" : " ",
 628                         e->dbm + off,
 629                         iwinfo_dbm2mw(e->dbm + off));
 630         }
 631 }
 632
 633
 634 static void print_freqlist(const struct iwinfo_ops *iw, const char *ifname)
 635 {
 636         int i, len, ch;
 637         char buf[IWINFO_BUFSIZE];
 638         struct iwinfo_freqlist_entry *e;
 639
 640         if (iw->freqlist(ifname, buf, &len) || len <= 0)
 641         {
 642                 printf("No frequency information available\n");
 643                 return;
 644         }
 645
 646         if (iw->channel(ifname, &ch))
 647                 ch = -1;
 648
 649         for (i = 0; i < len; i += sizeof(struct iwinfo_freqlist_entry))
 650         {
 651                 e = (struct iwinfo_freqlist_entry *) &buf[i];
 652
 653                 printf("%s %s (Channel %s)%s\n",
 654                         (ch == e->channel) ? "*" : " ",
 655                         format_frequency(e->mhz),
 656                         format_channel(e->channel),
 657                         e->restricted ? " [restricted]" : "");
 658         }
 659 }
 660
 661
 662 static void print_assoclist(const struct iwinfo_ops *iw, const char *ifname)
 663 {
 664         int i, len;
 665         char buf[IWINFO_BUFSIZE];
 666         struct iwinfo_assoclist_entry *e;
 667
 668         if (iw->assoclist(ifname, buf, &len))
 669         {
 670                 printf("No information available\n");
 671                 return;
 672         }
 673         else if (len <= 0)
 674         {
 675                 printf("No station connected\n");
 676                 return;
 677         }
 678
 679         for (i = 0; i < len; i += sizeof(struct iwinfo_assoclist_entry))
 680         {
 681                 e = (struct iwinfo_assoclist_entry *) &buf[i];
 682
 683                 printf("%s  %s / %s (SNR %d)  %d ms ago\n",
 684                         format_bssid(e->mac),
 685                         format_signal(e->signal),
 686                         format_noise(e->noise),
 687                         (e->signal - e->noise),
 688                         e->inactive);
 689
 690                 printf("        RX: %-38s  %8d Pkts.\n",
 691                         format_assocrate(&e->rx_rate),
 692                         e->rx_packets
 693                 );
 694
 695                 printf("        TX: %-38s  %8d Pkts.\n\n",
 696                         format_assocrate(&e->tx_rate),
 697                         e->tx_packets
 698                 );
 699         }
 700 }
 701
 702
 703 static char * lookup_country(char *buf, int len, int iso3166)
 704 {
 705         int i;
 706         struct iwinfo_country_entry *c;
 707
 708         for (i = 0; i < len; i += sizeof(struct iwinfo_country_entry))
 709         {
 710                 c = (struct iwinfo_country_entry *) &buf[i];
 711
 712                 if (c->iso3166 == iso3166)
 713                         return c->ccode;
 714         }
 715
 716         return NULL;
 717 }
 718
 719 static void print_countrylist(const struct iwinfo_ops *iw, const char *ifname)
 720 {
 721         int len;
 722         char buf[IWINFO_BUFSIZE];
 723         char *ccode;
 724         char curcode[3];
 725         const struct iwinfo_iso3166_label *l;
 726
 727         if (iw->countrylist(ifname, buf, &len))
 728         {
 729                 printf("No country code information available\n");
 730                 return;
 731         }
 732
 733         if (iw->country(ifname, curcode))
 734                 memset(curcode, 0, sizeof(curcode));
 735
 736         for (l = IWINFO_ISO3166_NAMES; l->iso3166; l++)
 737         {
 738                 if ((ccode = lookup_country(buf, len, l->iso3166)) != NULL)
 739                 {
 740                         printf("%s %4s  %c%c\n",
 741                                 strncmp(ccode, curcode, 2) ? " " : "*",
 742                                 ccode, (l->iso3166 / 256), (l->iso3166 % 256));
 743                 }
 744         }
 745 }
 746
 747
 748 int main(int argc, char **argv)
 749 {
 750         int i;
 751         char *p;
 752         const struct iwinfo_ops *iw;
 753         glob_t globbuf;
 754
 755         if (argc > 1 && argc < 3)
 756         {
 757                 fprintf(stderr,
 758                         "Usage:\n"
 759                         "       iwinfo <device> info\n"
 760                         "       iwinfo <device> scan\n"
 761                         "       iwinfo <device> txpowerlist\n"
 762                         "       iwinfo <device> freqlist\n"
 763                         "       iwinfo <device> assoclist\n"
 764                         "       iwinfo <device> countrylist\n"
 765                 );
 766
 767                 return 1;
 768         }
 769
 770         if (argc == 1)
 771         {
 772                 glob("/sys/class/net/*", 0, NULL, &globbuf);
 773
 774                 for (i = 0; i < globbuf.gl_pathc; i++)
 775                 {
 776                         p = strrchr(globbuf.gl_pathv[i], '/');
 777
 778                         if (!p)
 779                                 continue;
 780
 781                         iw = iwinfo_backend(++p);
 782
 783                         if (!iw)
 784                                 continue;
 785
 786                         print_info(iw, p);
 787                         printf("\n");
 788                 }
 789
 790                 globfree(&globbuf);
 791                 return 0;
 792         }
 793
 794         iw = iwinfo_backend(argv[1]);
 795
 796         if (!iw)
 797         {
 798                 fprintf(stderr, "No such wireless device: %s\n", argv[1]);
 799                 return 1;
 800         }
 801
 802         for (i = 2; i < argc; i++)
 803         {
 804                 switch(argv[i][0])
 805                 {
 806                 case 'i':
 807                         print_info(iw, argv[1]);
 808                         break;
 809
 810                 case 's':
 811                         print_scanlist(iw, argv[1]);
 812                         break;
 813
 814                 case 't':
 815                         print_txpwrlist(iw, argv[1]);
 816                         break;
 817
 818                 case 'f':
 819                         print_freqlist(iw, argv[1]);
 820                         break;
 821
 822                 case 'a':
 823                         print_assoclist(iw, argv[1]);
 824                         break;
 825
 826                 case 'c':
 827                         print_countrylist(iw, argv[1]);
 828                         break;
 829
 830                 default:
 831                         fprintf(stderr, "Unknown command: %s\n", argv[i]);
 832                         return 1;
 833                 }
 834         }
 835
 836         iwinfo_finish();
 837
 838         return 0;
 839 }