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[16];
  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[11];
  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[16];
  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[16];
  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[16];
  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[18];
 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         int i;
 149
 150         for (i = 0; i < IWINFO_CIPHER_COUNT; i++)
 151                 if (ciphers & (1 << i))
 152                         pos += sprintf(pos, "%s, ", IWINFO_CIPHER_NAMES[i]);
 153
 154         *(pos - 2) = 0;
 155
 156         return str;
 157 }
 158
 159 static char * format_enc_suites(int suites)
 160 {
 161         static char str[64] = { 0 };
 162         char *pos = str;
 163         int i;
 164
 165         for (i = 0; i < IWINFO_KMGMT_COUNT; i++)
 166                 if (suites & (1 << i))
 167                         pos += sprintf(pos, "%s/", IWINFO_KMGMT_NAMES[i]);
 168
 169         *(pos - 1) = 0;
 170
 171         return str;
 172 }
 173
 174 static char * format_encryption(struct iwinfo_crypto_entry *c)
 175 {
 176         static char buf[512];
 177         char *pos = buf;
 178         int i, n;
 179
 180         if (!c)
 181         {
 182                 snprintf(buf, sizeof(buf), "unknown");
 183         }
 184         else if (c->enabled)
 185         {
 186                 /* WEP */
 187                 if (c->auth_algs && !c->wpa_version)
 188                 {
 189                         if ((c->auth_algs & IWINFO_AUTH_OPEN) &&
 190                                 (c->auth_algs & IWINFO_AUTH_SHARED))
 191                         {
 192                                 snprintf(buf, sizeof(buf), "WEP Open/Shared (%s)",
 193                                         format_enc_ciphers(c->pair_ciphers));
 194                         }
 195                         else if (c->auth_algs & IWINFO_AUTH_OPEN)
 196                         {
 197                                 snprintf(buf, sizeof(buf), "WEP Open System (%s)",
 198                                         format_enc_ciphers(c->pair_ciphers));
 199                         }
 200                         else if (c->auth_algs & IWINFO_AUTH_SHARED)
 201                         {
 202                                 snprintf(buf, sizeof(buf), "WEP Shared Auth (%s)",
 203                                         format_enc_ciphers(c->pair_ciphers));
 204                         }
 205                 }
 206
 207                 /* WPA */
 208                 else if (c->wpa_version)
 209                 {
 210                         for (i = 0, n = 0; i < 3; i++)
 211                                 if (c->wpa_version & (1 << i))
 212                                         n++;
 213
 214                         if (n > 1)
 215                                 pos += sprintf(pos, "mixed ");
 216
 217                         for (i = 0; i < 3; i++)
 218                                 if (c->wpa_version & (1 << i))
 219                                 {
 220                                         if (i)
 221                                                 pos += sprintf(pos, "WPA%d/", i + 1);
 222                                         else
 223                                                 pos += sprintf(pos, "WPA/");
 224                                 }
 225
 226                         pos--;
 227
 228                         sprintf(pos, " %s (%s)",
 229                                 format_enc_suites(c->auth_suites),
 230                                 format_enc_ciphers(c->pair_ciphers | c->group_ciphers));
 231                 }
 232                 else
 233                 {
 234                         snprintf(buf, sizeof(buf), "none");
 235                 }
 236         }
 237         else
 238         {
 239                 snprintf(buf, sizeof(buf), "none");
 240         }
 241
 242         return buf;
 243 }
 244
 245 static char * format_hwmodes(int modes)
 246 {
 247         static char buf[32] = "802.11";
 248
 249         if (iwinfo_format_hwmodes(modes, buf + 6, sizeof(buf) - 6) < 1)
 250                 snprintf(buf, sizeof(buf), "unknown");
 251
 252         return buf;
 253 }
 254
 255 static char * format_assocrate(struct iwinfo_rate_entry *r)
 256 {
 257         static char buf[80];
 258         char *p = buf;
 259         int l = sizeof(buf);
 260
 261         if (r->rate <= 0)
 262         {
 263                 snprintf(buf, sizeof(buf), "unknown");
 264         }
 265         else
 266         {
 267                 p += snprintf(p, l, "%s", format_rate(r->rate));
 268                 l = sizeof(buf) - (p - buf);
 269
 270                 if (r->is_ht)
 271                 {
 272                         p += snprintf(p, l, ", MCS %d, %dMHz", r->mcs, r->mhz);
 273                         l = sizeof(buf) - (p - buf);
 274                 }
 275                 else if (r->is_vht)
 276                 {
 277                         p += snprintf(p, l, ", VHT-MCS %d, %dMHz", r->mcs, r->mhz);
 278                         l = sizeof(buf) - (p - buf);
 279
 280                         if (r->nss)
 281                         {
 282                                 p += snprintf(p, l, ", VHT-NSS %d", r->nss);
 283                                 l = sizeof(buf) - (p - buf);
 284                         }
 285                 }
 286                 else if (r->is_he)
 287                 {
 288                         p += snprintf(p, l, ", HE-MCS %d, %dMHz", r->mcs, r->mhz);
 289                         l = sizeof(buf) - (p - buf);
 290
 291                         p += snprintf(p, l, ", HE-NSS %d", r->nss);
 292                         l = sizeof(buf) - (p - buf);
 293
 294                         p += snprintf(p, l, ", HE-GI %d", r->he_gi);
 295                         l = sizeof(buf) - (p - buf);
 296
 297                         p += snprintf(p, l, ", HE-DCM %d", r->he_dcm);
 298                         l = sizeof(buf) - (p - buf);
 299                 }
 300         }
 301
 302         return buf;
 303 }
 304
 305 static const char* format_chan_width(bool vht, uint8_t width)
 306 {
 307         if (!vht && width < ARRAY_SIZE(ht_chan_width))
 308                 switch (ht_chan_width[width]) {
 309                         case 20: return "20 MHz";
 310                         case 2040: return "40 MHz or higher";
 311                 }
 312
 313         if (vht && width < ARRAY_SIZE(vht_chan_width))
 314                 switch (vht_chan_width[width]) {
 315                         case 40: return "20 or 40 MHz";
 316                         case 80: return "80 MHz";
 317                         case 8080: return "80+80 MHz";
 318                         case 160: return "160 MHz";
 319                 }
 320
 321         return "unknown";
 322 }
 323
 324
 325 static const char * print_type(const struct iwinfo_ops *iw, const char *ifname)
 326 {
 327         const char *type = iwinfo_type(ifname);
 328         return type ? type : "unknown";
 329 }
 330
 331 static char * print_hardware_id(const struct iwinfo_ops *iw, const char *ifname)
 332 {
 333         static char buf[20];
 334         struct iwinfo_hardware_id ids;
 335
 336         if (!iw->hardware_id(ifname, (char *)&ids))
 337         {
 338                 if (strlen(ids.compatible) > 0)
 339                         snprintf(buf, sizeof(buf), "embedded");
 340                 else
 341                         snprintf(buf, sizeof(buf), "%04X:%04X %04X:%04X",
 342                                 ids.vendor_id, ids.device_id,
 343                                 ids.subsystem_vendor_id, ids.subsystem_device_id);
 344         }
 345         else
 346         {
 347                 snprintf(buf, sizeof(buf), "unknown");
 348         }
 349
 350         return buf;
 351 }
 352
 353 static char * print_hardware_name(const struct iwinfo_ops *iw, const char *ifname)
 354 {
 355         static char buf[128];
 356
 357         if (iw->hardware_name(ifname, buf))
 358                 snprintf(buf, sizeof(buf), "unknown");
 359
 360         return buf;
 361 }
 362
 363 static char * print_txpower_offset(const struct iwinfo_ops *iw, const char *ifname)
 364 {
 365         int off;
 366         static char buf[12];
 367
 368         if (iw->txpower_offset(ifname, &off))
 369                 snprintf(buf, sizeof(buf), "unknown");
 370         else if (off != 0)
 371                 snprintf(buf, sizeof(buf), "%d dB", off);
 372         else
 373                 snprintf(buf, sizeof(buf), "none");
 374
 375         return buf;
 376 }
 377
 378 static char * print_frequency_offset(const struct iwinfo_ops *iw, const char *ifname)
 379 {
 380         int off;
 381         static char buf[12];
 382
 383         if (iw->frequency_offset(ifname, &off))
 384                 snprintf(buf, sizeof(buf), "unknown");
 385         else if (off != 0)
 386                 snprintf(buf, sizeof(buf), "%.3f GHz", ((float)off / 1000.0));
 387         else
 388                 snprintf(buf, sizeof(buf), "none");
 389
 390         return buf;
 391 }
 392
 393 static char * print_ssid(const struct iwinfo_ops *iw, const char *ifname)
 394 {
 395         char buf[IWINFO_ESSID_MAX_SIZE+1] = { 0 };
 396
 397         if (iw->ssid(ifname, buf))
 398                 memset(buf, 0, sizeof(buf));
 399
 400         return format_ssid(buf);
 401 }
 402
 403 static char * print_bssid(const struct iwinfo_ops *iw, const char *ifname)
 404 {
 405         static char buf[18] = { 0 };
 406
 407         if (iw->bssid(ifname, buf))
 408                 snprintf(buf, sizeof(buf), "00:00:00:00:00:00");
 409
 410         return buf;
 411 }
 412
 413 static char * print_mode(const struct iwinfo_ops *iw, const char *ifname)
 414 {
 415         int mode;
 416         static char buf[128];
 417
 418         if (iw->mode(ifname, &mode))
 419                 mode = IWINFO_OPMODE_UNKNOWN;
 420
 421         snprintf(buf, sizeof(buf), "%s", IWINFO_OPMODE_NAMES[mode]);
 422
 423         return buf;
 424 }
 425
 426 static char * print_channel(const struct iwinfo_ops *iw, const char *ifname)
 427 {
 428         int ch;
 429         if (iw->channel(ifname, &ch))
 430                 ch = -1;
 431
 432         return format_channel(ch);
 433 }
 434
 435 static char * print_center_chan1(const struct iwinfo_ops *iw, const char *ifname)
 436 {
 437         int ch;
 438         if (iw->center_chan1(ifname, &ch))
 439                 ch = -1;
 440
 441         return format_channel(ch);
 442 }
 443
 444 static char * print_center_chan2(const struct iwinfo_ops *iw, const char *ifname)
 445 {
 446         int ch;
 447         if (iw->center_chan2(ifname, &ch))
 448                 ch = -1;
 449
 450         return format_channel(ch);
 451 }
 452
 453 static char * print_frequency(const struct iwinfo_ops *iw, const char *ifname)
 454 {
 455         int freq;
 456         if (iw->frequency(ifname, &freq))
 457                 freq = -1;
 458
 459         return format_frequency(freq);
 460 }
 461
 462 static char * print_txpower(const struct iwinfo_ops *iw, const char *ifname)
 463 {
 464         int pwr, off;
 465         if (iw->txpower_offset(ifname, &off))
 466                 off = 0;
 467
 468         if (iw->txpower(ifname, &pwr))
 469                 pwr = -1;
 470         else
 471                 pwr += off;
 472
 473         return format_txpower(pwr);
 474 }
 475
 476 static char * print_quality(const struct iwinfo_ops *iw, const char *ifname)
 477 {
 478         int qual;
 479         if (iw->quality(ifname, &qual))
 480                 qual = -1;
 481
 482         return format_quality(qual);
 483 }
 484
 485 static char * print_quality_max(const struct iwinfo_ops *iw, const char *ifname)
 486 {
 487         int qmax;
 488         if (iw->quality_max(ifname, &qmax))
 489                 qmax = -1;
 490
 491         return format_quality_max(qmax);
 492 }
 493
 494 static char * print_signal(const struct iwinfo_ops *iw, const char *ifname)
 495 {
 496         int sig;
 497         if (iw->signal(ifname, &sig))
 498                 sig = 0;
 499
 500         return format_signal(sig);
 501 }
 502
 503 static char * print_noise(const struct iwinfo_ops *iw, const char *ifname)
 504 {
 505         int noise;
 506         if (iw->noise(ifname, &noise))
 507                 noise = 0;
 508
 509         return format_noise(noise);
 510 }
 511
 512 static char * print_rate(const struct iwinfo_ops *iw, const char *ifname)
 513 {
 514         int rate;
 515         if (iw->bitrate(ifname, &rate))
 516                 rate = -1;
 517
 518         return format_rate(rate);
 519 }
 520
 521 static char * print_encryption(const struct iwinfo_ops *iw, const char *ifname)
 522 {
 523         struct iwinfo_crypto_entry c = { 0 };
 524         if (iw->encryption(ifname, (char *)&c))
 525                 return format_encryption(NULL);
 526
 527         return format_encryption(&c);
 528 }
 529
 530 static char * print_hwmodes(const struct iwinfo_ops *iw, const char *ifname)
 531 {
 532         int modes;
 533         if (iw->hwmodelist(ifname, &modes))
 534                 modes = -1;
 535
 536         return format_hwmodes(modes);
 537 }
 538
 539 static const char *print_htmode(const struct iwinfo_ops *iw, const char *ifname)
 540 {
 541         int mode;
 542         const char *name;
 543         if (iw->htmode(ifname, &mode))
 544                 mode = -1;
 545
 546         name = iwinfo_htmode_name(mode);
 547         if (name)
 548                 return name;
 549
 550         return "unknown";
 551 }
 552
 553 static char * print_mbssid_supp(const struct iwinfo_ops *iw, const char *ifname)
 554 {
 555         int supp;
 556         static char buf[4];
 557
 558         if (iw->mbssid_support(ifname, &supp))
 559                 snprintf(buf, sizeof(buf), "no");
 560         else
 561                 snprintf(buf, sizeof(buf), "%s", supp ? "yes" : "no");
 562
 563         return buf;
 564 }
 565
 566 static char * print_phyname(const struct iwinfo_ops *iw, const char *ifname)
 567 {
 568         static char buf[32];
 569
 570         if (!iw->phyname(ifname, buf))
 571                 return buf;
 572
 573         return "?";
 574 }
 575
 576
 577 static void print_info(const struct iwinfo_ops *iw, const char *ifname)
 578 {
 579         printf("%-9s ESSID: %s\n",
 580                 ifname,
 581                 print_ssid(iw, ifname));
 582         printf("          Access Point: %s\n",
 583                 print_bssid(iw, ifname));
 584         printf("          Mode: %s  Channel: %s (%s)  HT Mode: %s\n",
 585                 print_mode(iw, ifname),
 586                 print_channel(iw, ifname),
 587                 print_frequency(iw, ifname),
 588                 print_htmode(iw, ifname));
 589         if (iw->center_chan1 != NULL) {
 590                 printf("          Center Channel 1: %s",
 591                         print_center_chan1(iw, ifname));
 592                 printf(" 2: %s\n", print_center_chan2(iw, ifname));
 593         }
 594         printf("          Tx-Power: %s  Link Quality: %s/%s\n",
 595                 print_txpower(iw, ifname),
 596                 print_quality(iw, ifname),
 597                 print_quality_max(iw, ifname));
 598         printf("          Signal: %s  Noise: %s\n",
 599                 print_signal(iw, ifname),
 600                 print_noise(iw, ifname));
 601         printf("          Bit Rate: %s\n",
 602                 print_rate(iw, ifname));
 603         printf("          Encryption: %s\n",
 604                 print_encryption(iw, ifname));
 605         printf("          Type: %s  HW Mode(s): %s\n",
 606                 print_type(iw, ifname),
 607                 print_hwmodes(iw, ifname));
 608         printf("          Hardware: %s [%s]\n",
 609                 print_hardware_id(iw, ifname),
 610                 print_hardware_name(iw, ifname));
 611         printf("          TX power offset: %s\n",
 612                 print_txpower_offset(iw, ifname));
 613         printf("          Frequency offset: %s\n",
 614                 print_frequency_offset(iw, ifname));
 615         printf("          Supports VAPs: %s  PHY name: %s\n",
 616                 print_mbssid_supp(iw, ifname),
 617                 print_phyname(iw, ifname));
 618 }
 619
 620
 621 static void print_scanlist(const struct iwinfo_ops *iw, const char *ifname)
 622 {
 623         int i, x, len;
 624         char buf[IWINFO_BUFSIZE];
 625         struct iwinfo_scanlist_entry *e;
 626
 627         if (iw->scanlist(ifname, buf, &len))
 628         {
 629                 printf("Scanning not possible\n\n");
 630                 return;
 631         }
 632         else if (len <= 0)
 633         {
 634                 printf("No scan results\n\n");
 635                 return;
 636         }
 637
 638         for (i = 0, x = 1; i < len; i += sizeof(struct iwinfo_scanlist_entry), x++)
 639         {
 640                 e = (struct iwinfo_scanlist_entry *) &buf[i];
 641
 642                 printf("Cell %02d - Address: %s\n",
 643                         x,
 644                         format_bssid(e->mac));
 645                 printf("          ESSID: %s\n",
 646                         format_ssid(e->ssid));
 647                 printf("          Mode: %s  Channel: %s\n",
 648                         IWINFO_OPMODE_NAMES[e->mode],
 649                         format_channel(e->channel));
 650                 printf("          Signal: %s  Quality: %s/%s\n",
 651                         format_signal(e->signal - 0x100),
 652                         format_quality(e->quality),
 653                         format_quality_max(e->quality_max));
 654                 printf("          Encryption: %s\n",
 655                         format_encryption(&e->crypto));
 656                 printf("          HT Operation:\n");
 657                 printf("                    Primary Channel: %d\n",
 658                         e->ht_chan_info.primary_chan);
 659                 printf("                    Secondary Channel Offset: %s\n",
 660                         ht_secondary_offset[e->ht_chan_info.secondary_chan_off]);
 661                 printf("                    Channel Width: %s\n",
 662                         format_chan_width(false, e->ht_chan_info.chan_width));
 663
 664                 if (e->vht_chan_info.center_chan_1) {
 665                         printf("          VHT Operation:\n");
 666                         printf("                    Center Frequency 1: %d\n",
 667                                  e->vht_chan_info.center_chan_1);
 668                         printf("                    Center Frequency 2: %d\n",
 669                                  e->vht_chan_info.center_chan_2);
 670                         printf("                    Channel Width: %s\n",
 671                                 format_chan_width(true, e->vht_chan_info.chan_width));
 672                 }
 673
 674                 printf("\n");
 675         }
 676 }
 677
 678
 679 static void print_txpwrlist(const struct iwinfo_ops *iw, const char *ifname)
 680 {
 681         int len, pwr, off, i;
 682         char buf[IWINFO_BUFSIZE];
 683         struct iwinfo_txpwrlist_entry *e;
 684
 685         if (iw->txpwrlist(ifname, buf, &len) || len <= 0)
 686         {
 687                 printf("No TX power information available\n");
 688                 return;
 689         }
 690
 691         if (iw->txpower(ifname, &pwr))
 692                 pwr = -1;
 693
 694         if (iw->txpower_offset(ifname, &off))
 695                 off = 0;
 696
 697         for (i = 0; i < len; i += sizeof(struct iwinfo_txpwrlist_entry))
 698         {
 699                 e = (struct iwinfo_txpwrlist_entry *) &buf[i];
 700
 701                 printf("%s%3d dBm (%4d mW)\n",
 702                         (pwr == e->dbm) ? "*" : " ",
 703                         e->dbm + off,
 704                         iwinfo_dbm2mw(e->dbm + off));
 705         }
 706 }
 707
 708
 709 static void print_freqlist(const struct iwinfo_ops *iw, const char *ifname)
 710 {
 711         int i, len, freq;
 712         char buf[IWINFO_BUFSIZE];
 713         struct iwinfo_freqlist_entry *e;
 714
 715         if (iw->freqlist(ifname, buf, &len) || len <= 0)
 716         {
 717                 printf("No frequency information available\n");
 718                 return;
 719         }
 720
 721         if (iw->frequency(ifname, &freq))
 722                 freq = -1;
 723
 724         for (i = 0; i < len; i += sizeof(struct iwinfo_freqlist_entry))
 725         {
 726                 e = (struct iwinfo_freqlist_entry *) &buf[i];
 727
 728                 printf("%s %s (Channel %s)%s\n",
 729                         (freq == e->mhz) ? "*" : " ",
 730                         format_frequency(e->mhz),
 731                         format_channel(e->channel),
 732                         e->restricted ? " [restricted]" : "");
 733         }
 734 }
 735
 736
 737 static void print_assoclist(const struct iwinfo_ops *iw, const char *ifname)
 738 {
 739         int i, len;
 740         char buf[IWINFO_BUFSIZE];
 741         struct iwinfo_assoclist_entry *e;
 742
 743         if (iw->assoclist(ifname, buf, &len))
 744         {
 745                 printf("No information available\n");
 746                 return;
 747         }
 748         else if (len <= 0)
 749         {
 750                 printf("No station connected\n");
 751                 return;
 752         }
 753
 754         for (i = 0; i < len; i += sizeof(struct iwinfo_assoclist_entry))
 755         {
 756                 e = (struct iwinfo_assoclist_entry *) &buf[i];
 757
 758                 printf("%s  %s / %s (SNR %d)  %d ms ago\n",
 759                         format_bssid(e->mac),
 760                         format_signal(e->signal),
 761                         format_noise(e->noise),
 762                         (e->signal - e->noise),
 763                         e->inactive);
 764
 765                 printf("        RX: %-38s  %8d Pkts.\n",
 766                         format_assocrate(&e->rx_rate),
 767                         e->rx_packets
 768                 );
 769
 770                 printf("        TX: %-38s  %8d Pkts.\n",
 771                         format_assocrate(&e->tx_rate),
 772                         e->tx_packets
 773                 );
 774
 775                 printf("        expected throughput: %s\n\n",
 776                         format_rate(e->thr));
 777         }
 778 }
 779
 780
 781 static char * lookup_country(char *buf, int len, int iso3166)
 782 {
 783         int i;
 784         struct iwinfo_country_entry *c;
 785
 786         for (i = 0; i < len; i += sizeof(struct iwinfo_country_entry))
 787         {
 788                 c = (struct iwinfo_country_entry *) &buf[i];
 789
 790                 if (c->iso3166 == iso3166)
 791                         return c->ccode;
 792         }
 793
 794         return NULL;
 795 }
 796
 797 static void print_countrylist(const struct iwinfo_ops *iw, const char *ifname)
 798 {
 799         int len;
 800         char buf[IWINFO_BUFSIZE];
 801         char *ccode;
 802         char curcode[3];
 803         const struct iwinfo_iso3166_label *l;
 804
 805         if (iw->countrylist(ifname, buf, &len))
 806         {
 807                 printf("No country code information available\n");
 808                 return;
 809         }
 810
 811         if (iw->country(ifname, curcode))
 812                 memset(curcode, 0, sizeof(curcode));
 813
 814         for (l = IWINFO_ISO3166_NAMES; l->iso3166; l++)
 815         {
 816                 if ((ccode = lookup_country(buf, len, l->iso3166)) != NULL)
 817                 {
 818                         printf("%s %4s  %c%c\n",
 819                                 strncmp(ccode, curcode, 2) ? " " : "*",
 820                                 ccode, (l->iso3166 / 256), (l->iso3166 % 256));
 821                 }
 822         }
 823 }
 824
 825 static void print_htmodelist(const struct iwinfo_ops *iw, const char *ifname)
 826 {
 827         int i, htmodes = 0;
 828
 829         if (iw->htmodelist(ifname, &htmodes))
 830         {
 831                 printf("No HT mode information available\n");
 832                 return;
 833         }
 834
 835         for (i = 0; i < IWINFO_HTMODE_COUNT; i++)
 836                 if (htmodes & (1 << i))
 837                         printf("%s ", IWINFO_HTMODE_NAMES[i]);
 838
 839         printf("\n");
 840 }
 841
 842 static void lookup_phy(const struct iwinfo_ops *iw, const char *section)
 843 {
 844         char buf[IWINFO_BUFSIZE];
 845
 846         if (!iw->lookup_phy)
 847         {
 848                 fprintf(stderr, "Not supported\n");
 849                 return;
 850         }
 851
 852         if (iw->lookup_phy(section, buf))
 853         {
 854                 fprintf(stderr, "Phy not found\n");
 855                 return;
 856         }
 857
 858         printf("%s\n", buf);
 859 }
 860
 861
 862 static void lookup_path(const struct iwinfo_ops *iw, const char *phy)
 863 {
 864         const char *path;
 865
 866         if (!iw->phy_path || iw->phy_path(phy, &path) || !path)
 867                 return;
 868
 869         printf("%s\n", path);
 870 }
 871
 872 int main(int argc, char **argv)
 873 {
 874         int i, rv = 0;
 875         char *p;
 876         const struct iwinfo_ops *iw;
 877         glob_t globbuf;
 878
 879         if (argc > 1 && argc < 3)
 880         {
 881                 fprintf(stderr,
 882                         "Usage:\n"
 883                         "       iwinfo <device> info\n"
 884                         "       iwinfo <device> scan\n"
 885                         "       iwinfo <device> txpowerlist\n"
 886                         "       iwinfo <device> freqlist\n"
 887                         "       iwinfo <device> assoclist\n"
 888                         "       iwinfo <device> countrylist\n"
 889                         "       iwinfo <device> htmodelist\n"
 890                         "       iwinfo <backend> phyname <section>\n"
 891                 );
 892
 893                 return 1;
 894         }
 895
 896         if (argc == 1)
 897         {
 898                 glob("/sys/class/net/*", 0, NULL, &globbuf);
 899
 900                 for (i = 0; i < globbuf.gl_pathc; i++)
 901                 {
 902                         p = strrchr(globbuf.gl_pathv[i], '/');
 903
 904                         if (!p)
 905                                 continue;
 906
 907                         iw = iwinfo_backend(++p);
 908
 909                         if (!iw)
 910                                 continue;
 911
 912                         print_info(iw, p);
 913                         printf("\n");
 914                 }
 915
 916                 globfree(&globbuf);
 917                 return 0;
 918         }
 919
 920         if (argc > 3)
 921         {
 922                 iw = iwinfo_backend_by_name(argv[1]);
 923
 924                 if (!iw)
 925                 {
 926                         fprintf(stderr, "No such wireless backend: %s\n", argv[1]);
 927                         rv = 1;
 928                 }
 929                 else
 930                 {
 931                         if (!strcmp(argv[2], "path")) {
 932                                 lookup_path(iw, argv[3]);
 933                                 return 0;
 934                         }
 935                         switch (argv[2][0])
 936                         {
 937                         case 'p':
 938                                 lookup_phy(iw, argv[3]);
 939                                 break;
 940
 941                         default:
 942                                 fprintf(stderr, "Unknown command: %s\n", argv[2]);
 943                                 rv = 1;
 944                         }
 945                 }
 946         }
 947         else
 948         {
 949                 iw = iwinfo_backend(argv[1]);
 950
 951                 if (!iw)
 952                 {
 953                         fprintf(stderr, "No such wireless device: %s\n", argv[1]);
 954                         rv = 1;
 955                 }
 956                 else
 957                 {
 958                         for (i = 2; i < argc; i++)
 959                         {
 960                                 switch(argv[i][0])
 961                                 {
 962                                 case 'i':
 963                                         print_info(iw, argv[1]);
 964                                         break;
 965
 966                                 case 's':
 967                                         print_scanlist(iw, argv[1]);
 968                                         break;
 969
 970                                 case 't':
 971                                         print_txpwrlist(iw, argv[1]);
 972                                         break;
 973
 974                                 case 'f':
 975                                         print_freqlist(iw, argv[1]);
 976                                         break;
 977
 978                                 case 'a':
 979                                         print_assoclist(iw, argv[1]);
 980                                         break;
 981
 982                                 case 'c':
 983                                         print_countrylist(iw, argv[1]);
 984                                         break;
 985
 986                                 case 'h':
 987                                         print_htmodelist(iw, argv[1]);
 988                                         break;
 989
 990                                 default:
 991                                         fprintf(stderr, "Unknown command: %s\n", argv[i]);
 992                                         rv = 1;
 993                                 }
 994                         }
 995                 }
 996         }
 997
 998         iwinfo_finish();
 999
1000         return rv;
1001 }