caputils/airpcap_loader.c

   1 /* airpcap_loader.c
   2  *
   3  * Giorgio Tino <giorgio.tino@cacetech.com>
   4  * Copyright (c) CACE Technologies, LLC 2006
   5  *
   6  * Wireshark - Network traffic analyzer
   7  * By Gerald Combs <gerald@wireshark.org>
   8  * Copyright 2000 Gerald Combs
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation; either version 2
  13  * of the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  23  */
  24
  25 #include "config.h"
  26
  27 #ifdef HAVE_AIRPCAP
  28
  29 #ifdef HAVE_LIBPCAP
  30 #include <glib.h>
  31 #include <gmodule.h>
  32
  33
  34 #include <wtap.h>
  35 #include <pcap.h>
  36 #endif
  37
  38 #include <epan/crypt/airpdcap_ws.h>
  39 #include <epan/strutil.h>
  40 #include <wsutil/file_util.h>
  41 #include <wsutil/frequency-utils.h>
  42
  43 #include <caputils/airpcap.h>
  44 #include <caputils/airpcap_loader.h>
  45
  46
  47 /*
  48  * Set to TRUE if the DLL was successfully loaded AND all functions
  49  * are present.
  50  */
  51 static gboolean AirpcapLoaded = FALSE;
  52
  53 #ifdef _WIN32
  54 /*
  55  * We load dynamically the dag library in order link it only when
  56  * it's present on the system
  57  */
  58 static void * AirpcapLib = NULL;
  59
  60 static AirpcapGetLastErrorHandler g_PAirpcapGetLastError;
  61 static AirpcapSetKernelBufferHandler g_PAirpcapSetKernelBuffer;
  62 static AirpcapSetFilterHandler g_PAirpcapSetFilter;
  63 static AirpcapGetMacAddressHandler g_PAirpcapGetMacAddress;
  64 static AirpcapSetMinToCopyHandler g_PAirpcapSetMinToCopy;
  65 static AirpcapGetReadEventHandler g_PAirpcapGetReadEvent;
  66 static AirpcapReadHandler g_PAirpcapRead;
  67 static AirpcapGetStatsHandler g_PAirpcapGetStats;
  68 #endif
  69
  70 static int AirpcapVersion = 3;
  71
  72 static AirpcapGetDeviceListHandler g_PAirpcapGetDeviceList;
  73 static AirpcapFreeDeviceListHandler g_PAirpcapFreeDeviceList;
  74 static AirpcapOpenHandler g_PAirpcapOpen;
  75 static AirpcapCloseHandler g_PAirpcapClose;
  76 static AirpcapGetLinkTypeHandler g_PAirpcapGetLinkType;
  77 static AirpcapSetLinkTypeHandler g_PAirpcapSetLinkType;
  78 static AirpcapTurnLedOnHandler g_PAirpcapTurnLedOn;
  79 static AirpcapTurnLedOffHandler g_PAirpcapTurnLedOff;
  80 static AirpcapGetDeviceChannelHandler g_PAirpcapGetDeviceChannel;
  81 static AirpcapSetDeviceChannelHandler g_PAirpcapSetDeviceChannel;
  82 static AirpcapGetFcsPresenceHandler g_PAirpcapGetFcsPresence;
  83 static AirpcapSetFcsPresenceHandler g_PAirpcapSetFcsPresence;
  84 static AirpcapGetFcsValidationHandler g_PAirpcapGetFcsValidation;
  85 static AirpcapSetFcsValidationHandler g_PAirpcapSetFcsValidation;
  86 static AirpcapGetDeviceKeysHandler g_PAirpcapGetDeviceKeys;
  87 static AirpcapSetDeviceKeysHandler g_PAirpcapSetDeviceKeys;
  88 static AirpcapGetDriverKeysHandler g_PAirpcapGetDriverKeys;
  89 static AirpcapSetDriverKeysHandler g_PAirpcapSetDriverKeys;
  90 static AirpcapGetDecryptionStateHandler g_PAirpcapGetDecryptionState;
  91 static AirpcapSetDecryptionStateHandler g_PAirpcapSetDecryptionState;
  92 static AirpcapGetDriverDecryptionStateHandler g_PAirpcapGetDriverDecryptionState;
  93 static AirpcapSetDriverDecryptionStateHandler g_PAirpcapSetDriverDecryptionState;
  94 static AirpcapStoreCurConfigAsAdapterDefaultHandler g_PAirpcapStoreCurConfigAsAdapterDefault;
  95 static AirpcapGetVersionHandler g_PAirpcapGetVersion;
  96 static AirpcapSetDeviceChannelExHandler g_PAirpcapSetDeviceChannelEx;
  97 static AirpcapGetDeviceChannelExHandler g_PAirpcapGetDeviceChannelEx;
  98 static AirpcapGetDeviceSupportedChannelsHandler g_PAirpcapGetDeviceSupportedChannels;
  99
 100 /* Airpcap interface list */
 101 GList *g_airpcap_if_list = NULL;
 102
 103 /* Airpcap current selected interface */
 104 airpcap_if_info_t *airpcap_if_selected = NULL;
 105
 106 /* Airpcap current active interface */
 107 airpcap_if_info_t *airpcap_if_active = NULL;
 108
 109 Dot11Channel *pSupportedChannels;
 110 guint numSupportedChannels;
 111
 112 static AirpcapChannelInfo LegacyChannels[] =
 113 {
 114     {2412, 0, {0,0,0}},
 115     {2417, 0, {0,0,0}},
 116     {2422, 0, {0,0,0}},
 117     {2427, 0, {0,0,0}},
 118     {2432, 0, {0,0,0}},
 119     {2437, 0, {0,0,0}},
 120     {2442, 0, {0,0,0}},
 121     {2447, 0, {0,0,0}},
 122     {2452, 0, {0,0,0}},
 123     {2457, 0, {0,0,0}},
 124     {2462, 0, {0,0,0}},
 125     {2467, 0, {0,0,0}},
 126     {2472, 0, {0,0,0}},
 127     {2484, 0, {0,0,0}},
 128 };
 129
 130 static guint num_legacy_channels = 14;
 131
 132 /*
 133  * Get an error message string for a CANT_GET_INTERFACE_LIST error from
 134  * "get_airpcap_interface_list()".
 135  */
 136 static gchar *
 137 cant_get_airpcap_if_list_error_message(const char *err_str)
 138 {
 139     return g_strdup_printf("Can't get list of Wireless interfaces: %s", err_str);
 140 }
 141
 142 /*
 143  * Airpcap wrapper, used to store the current settings for the selected adapter
 144  */
 145 gboolean
 146 airpcap_if_store_cur_config_as_adapter_default(PAirpcapHandle ah)
 147 {
 148     if (!AirpcapLoaded) return FALSE;
 149     return g_PAirpcapStoreCurConfigAsAdapterDefault(ah);
 150 }
 151
 152 /*
 153  * Airpcap wrapper, used to open an airpcap adapter
 154  */
 155 PAirpcapHandle
 156 airpcap_if_open(gchar * name, gchar * err)
 157 {
 158     if (!AirpcapLoaded) return NULL;
 159     if (name == NULL) return NULL;
 160     return g_PAirpcapOpen(name,err);
 161 }
 162
 163 /*
 164  * Airpcap wrapper, used to close an airpcap adapter
 165  */
 166 void
 167 airpcap_if_close(PAirpcapHandle handle)
 168 {
 169     if (!AirpcapLoaded) return;
 170     g_PAirpcapClose(handle);
 171 }
 172
 173 /*
 174  * Retrieve the state of the Airpcap DLL
 175  */
 176 int
 177 airpcap_get_dll_state(void)
 178 {
 179     return AirpcapVersion;
 180 }
 181
 182 /*
 183  * Airpcap wrapper, used to turn on the led of an airpcap adapter
 184  */
 185 gboolean
 186 airpcap_if_turn_led_on(PAirpcapHandle AdapterHandle, guint LedNumber)
 187 {
 188     if (!AirpcapLoaded) return FALSE;
 189     return g_PAirpcapTurnLedOn(AdapterHandle,LedNumber);
 190 }
 191
 192 /*
 193  * Airpcap wrapper, used to turn off the led of an airpcap adapter
 194  */
 195 gboolean
 196 airpcap_if_turn_led_off(PAirpcapHandle AdapterHandle, guint LedNumber)
 197 {
 198     if (!AirpcapLoaded) return FALSE;
 199     return g_PAirpcapTurnLedOff(AdapterHandle,LedNumber);
 200 }
 201
 202 /*
 203  * Airpcap wrapper, used to get the channel of an airpcap adapter
 204  */
 205 gboolean
 206 airpcap_if_get_device_channel(PAirpcapHandle ah, guint * ch)
 207 {
 208     if (!AirpcapLoaded) return FALSE;
 209     return g_PAirpcapGetDeviceChannel(ah,ch);
 210 }
 211
 212 /*
 213  * Airpcap wrapper, used to get the supported channels of an airpcap adapter
 214  */
 215 gboolean
 216 airpcap_if_get_device_supported_channels(PAirpcapHandle ah, AirpcapChannelInfo **cInfo, guint * nInfo)
 217 {
 218     if (!AirpcapLoaded) return FALSE;
 219     if (airpcap_get_dll_state() == AIRPCAP_DLL_OLD) {
 220         *nInfo = num_legacy_channels;
 221         *cInfo = (AirpcapChannelInfo*)&LegacyChannels;
 222
 223         return TRUE;
 224     } else if (airpcap_get_dll_state() == AIRPCAP_DLL_OK) {
 225         return g_PAirpcapGetDeviceSupportedChannels(ah, cInfo, nInfo);
 226     }
 227     return FALSE;
 228 }
 229
 230 /*
 231  * Airpcap wrapper, used to get the supported channels of an airpcap adapter
 232  */
 233 Dot11Channel*
 234 airpcap_if_get_device_supported_channels_array(PAirpcapHandle ah, guint * pNumSupportedChannels)
 235 {
 236     AirpcapChannelInfo *chanInfo;
 237     guint i=0, j=0, numInfo = 0;
 238
 239     if (!AirpcapLoaded)
 240         return NULL;
 241     if (airpcap_if_get_device_supported_channels(ah, &chanInfo, &numInfo) == FALSE)
 242         return NULL;
 243     numSupportedChannels = 0;
 244
 245     /*
 246      * allocate a bigger array
 247      */
 248     if (numInfo == 0)
 249         return NULL;
 250
 251     pSupportedChannels = (Dot11Channel *)g_malloc(numInfo * (sizeof *pSupportedChannels));
 252
 253     for (i = 0; i < numInfo; i++)
 254     {
 255         guint supportedChannel = G_MAXUINT;
 256
 257         /*
 258          * search if we have it already
 259          */
 260         for (j = 0; j < numSupportedChannels; j++)
 261         {
 262             if (pSupportedChannels[j].Frequency == chanInfo[i].Frequency)
 263             {
 264                 supportedChannel = j;
 265                 break;
 266             }
 267         }
 268
 269         if (supportedChannel == G_MAXUINT)
 270         {
 271             /*
 272              * not found, create a new item
 273              */
 274             pSupportedChannels[numSupportedChannels].Frequency = chanInfo[i].Frequency;
 275
 276             switch(chanInfo[i].ExtChannel)
 277             {
 278                 case -1:
 279                     pSupportedChannels[numSupportedChannels].Flags = FLAG_CAN_BE_LOW;
 280                     break;
 281                 case +1:
 282                     pSupportedChannels[numSupportedChannels].Flags = FLAG_CAN_BE_HIGH;
 283                     break;
 284                 case 0:
 285                 default:
 286                     pSupportedChannels[numSupportedChannels].Flags = 0;
 287             }
 288
 289             /*
 290              * Gather channel information
 291              */
 292
 293             pSupportedChannels[numSupportedChannels].Flags |=
 294                 FREQ_IS_BG(pSupportedChannels[numSupportedChannels].Frequency) ?
 295                     FLAG_IS_BG_CHANNEL : FLAG_IS_A_CHANNEL;
 296             pSupportedChannels[numSupportedChannels].Channel =
 297                 ieee80211_mhz_to_chan(pSupportedChannels[numSupportedChannels].Frequency);
 298             numSupportedChannels++;
 299         }
 300         else
 301         {
 302             /*
 303              * just update the ext channel flags
 304              */
 305             switch(chanInfo[i].ExtChannel)
 306             {
 307                 case -1:
 308                     pSupportedChannels[supportedChannel].Flags |= FLAG_CAN_BE_LOW;
 309                     break;
 310                 case +1:
 311                     pSupportedChannels[supportedChannel].Flags |= FLAG_CAN_BE_HIGH;
 312                     break;
 313                 case 0:
 314                 default:
 315                     break;
 316             }
 317         }
 318     }
 319
 320     if (numSupportedChannels < 1)
 321         return NULL;
 322     /*
 323      * Now sort the list by frequency
 324      */
 325     for (i = 0 ; i < numSupportedChannels - 1; i++)
 326     {
 327         for (j = i + 1; j < numSupportedChannels; j++)
 328         {
 329             if (pSupportedChannels[i].Frequency > pSupportedChannels[j].Frequency)
 330             {
 331                 Dot11Channel temp = pSupportedChannels[i];
 332                 pSupportedChannels[i] = pSupportedChannels[j];
 333                 pSupportedChannels[j] = temp;
 334             }
 335         }
 336     }
 337
 338     *pNumSupportedChannels = numSupportedChannels;
 339     return pSupportedChannels;
 340 }
 341
 342 /*
 343  * Airpcap wrapper, used to set the channel of an airpcap adapter
 344  */
 345 gboolean
 346 airpcap_if_set_device_channel(PAirpcapHandle ah, guint ch)
 347 {
 348     if (!AirpcapLoaded) return FALSE;
 349     return g_PAirpcapSetDeviceChannel(ah,ch);
 350 }
 351
 352 /*
 353  * Airpcap wrapper, used to set the frequency of an airpcap adapter
 354  */
 355 gboolean
 356 airpcap_if_set_device_channel_ex(PAirpcapHandle ah, AirpcapChannelInfo ChannelInfo)
 357 {
 358     if (!AirpcapLoaded) return FALSE;
 359     if (airpcap_get_dll_state() == AIRPCAP_DLL_OLD){
 360         gint channel = 0;
 361         channel = ieee80211_mhz_to_chan(ChannelInfo.Frequency);
 362
 363         if (channel < 0){
 364             return FALSE;
 365         } else {
 366             return airpcap_if_set_device_channel(ah, channel);
 367         }
 368     } else if (airpcap_get_dll_state() == AIRPCAP_DLL_OK){
 369         return g_PAirpcapSetDeviceChannelEx (ah, ChannelInfo);
 370     }
 371
 372     return FALSE;
 373 }
 374
 375 /*
 376  * Airpcap wrapper, used to get the frequency of an airpcap adapter
 377  */
 378 gboolean
 379 airpcap_if_get_device_channel_ex(PAirpcapHandle ah, PAirpcapChannelInfo pChannelInfo)
 380 {
 381     if (!AirpcapLoaded) return FALSE;
 382
 383     pChannelInfo->Frequency = 0;
 384     pChannelInfo->ExtChannel = 0;
 385     pChannelInfo->Reserved[0] = 0;
 386     pChannelInfo->Reserved[1] = 0;
 387     pChannelInfo->Reserved[2] = 0;
 388
 389     if (airpcap_get_dll_state() == AIRPCAP_DLL_OLD){
 390         guint channel = 0;
 391         guint chan_freq = 0;
 392
 393         if (!airpcap_if_get_device_channel(ah, &channel)) return FALSE;
 394
 395         chan_freq = ieee80211_chan_to_mhz(channel, TRUE);
 396         if (chan_freq == 0) return FALSE;
 397         pChannelInfo->Frequency = chan_freq;
 398
 399         return TRUE;
 400     } else if (airpcap_get_dll_state() == AIRPCAP_DLL_OK){
 401         return g_PAirpcapGetDeviceChannelEx (ah, pChannelInfo);
 402     }
 403     return FALSE;
 404 }
 405
 406 /*
 407  * Airpcap wrapper, used to get the link type of an airpcap adapter
 408  */
 409 gboolean
 410 airpcap_if_get_link_type(PAirpcapHandle ah, PAirpcapLinkType lt)
 411 {
 412     if (!AirpcapLoaded) return FALSE;
 413     return g_PAirpcapGetLinkType(ah,lt);
 414 }
 415
 416 /*
 417  * Airpcap wrapper, used to set the link type of an airpcap adapter
 418  */
 419 gboolean
 420 airpcap_if_set_link_type(PAirpcapHandle ah, AirpcapLinkType lt)
 421 {
 422     if (!AirpcapLoaded) return FALSE;
 423     return g_PAirpcapSetLinkType(ah,lt);
 424 }
 425
 426 /*
 427  * Airpcap wrapper, used to get the fcs presence of an airpcap adapter
 428  */
 429 gboolean
 430 airpcap_if_get_fcs_presence(PAirpcapHandle ah, gboolean * fcs)
 431 {
 432     if (!AirpcapLoaded) return FALSE;
 433     return g_PAirpcapGetFcsPresence(ah,fcs);
 434 }
 435
 436 /*
 437  * Airpcap wrapper, used to set the fcs presence of an airpcap adapter
 438  */
 439 gboolean
 440 airpcap_if_set_fcs_presence(PAirpcapHandle ah, gboolean fcs)
 441 {
 442     if (!AirpcapLoaded) return FALSE;
 443     return g_PAirpcapSetFcsPresence(ah,fcs);
 444 }
 445
 446 /*
 447  * Airpcap wrapper, used to get the decryption enabling of an airpcap adapter
 448  */
 449 gboolean
 450 airpcap_if_get_decryption_state(PAirpcapHandle ah, PAirpcapDecryptionState PEnable)
 451 {
 452     if (!AirpcapLoaded) return FALSE;
 453     return g_PAirpcapGetDecryptionState(ah,PEnable);
 454 }
 455
 456 /*
 457  * Airpcap wrapper, used to set the decryption enabling of an airpcap adapter
 458  */
 459 gboolean
 460 airpcap_if_set_decryption_state(PAirpcapHandle ah, AirpcapDecryptionState Enable)
 461 {
 462     if (!AirpcapLoaded) return FALSE;
 463     return g_PAirpcapSetDecryptionState(ah,Enable);
 464 }
 465
 466 /*
 467  * Airpcap wrapper, used to get the decryption enabling of an airpcap driver
 468  */
 469 gboolean
 470 airpcap_if_get_driver_decryption_state(PAirpcapHandle ah, PAirpcapDecryptionState PEnable)
 471 {
 472     if (!AirpcapLoaded || (g_PAirpcapGetDriverDecryptionState==NULL)) return FALSE;
 473     return g_PAirpcapGetDriverDecryptionState(ah,PEnable);
 474 }
 475
 476 /*
 477  * Airpcap wrapper, used to set the decryption enabling of an airpcap driver
 478  */
 479 gboolean
 480 airpcap_if_set_driver_decryption_state(PAirpcapHandle ah, AirpcapDecryptionState Enable)
 481 {
 482     if (!AirpcapLoaded || (g_PAirpcapSetDriverDecryptionState==NULL)) return FALSE;
 483     return g_PAirpcapSetDriverDecryptionState(ah,Enable);
 484 }
 485
 486 /*
 487  * Airpcap wrapper, used to get the fcs validation of an airpcap adapter
 488  */
 489 gboolean
 490 airpcap_if_get_fcs_validation(PAirpcapHandle ah, PAirpcapValidationType val)
 491 {
 492     if (!AirpcapLoaded) return FALSE;
 493     return g_PAirpcapGetFcsValidation(ah,val);
 494 }
 495
 496 /*
 497  * Airpcap wrapper, used to set the fcs validation of an airpcap adapter
 498  */
 499 gboolean
 500 airpcap_if_set_fcs_validation(PAirpcapHandle ah, AirpcapValidationType val)
 501 {
 502     if (!AirpcapLoaded) return FALSE;
 503     return g_PAirpcapSetFcsValidation(ah,val);
 504 }
 505
 506 /*
 507  * Airpcap wrapper, used to save the settings for the selected_if
 508  */
 509 gboolean
 510 airpcap_if_set_device_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection)
 511 {
 512     if (!AirpcapLoaded) return FALSE;
 513     return g_PAirpcapSetDeviceKeys(AdapterHandle,KeysCollection);
 514 }
 515
 516 /*
 517  * Airpcap wrapper, used to save the settings for the selected_if
 518  */
 519 gboolean
 520 airpcap_if_get_device_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection, guint * PKeysCollectionSize)
 521 {
 522     if (!AirpcapLoaded) return FALSE;
 523     return g_PAirpcapGetDeviceKeys(AdapterHandle,KeysCollection,PKeysCollectionSize);
 524 }
 525
 526 /*
 527  * Airpcap wrapper, used to save the driver's set of keys
 528  */
 529 gboolean
 530 airpcap_if_set_driver_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection)
 531 {
 532     if (!AirpcapLoaded || (g_PAirpcapSetDriverKeys==NULL)) return FALSE;
 533     return g_PAirpcapSetDriverKeys(AdapterHandle,KeysCollection);
 534 }
 535
 536 /*
 537  * Airpcap wrapper, used to load the driver's set of keys
 538  */
 539 gboolean
 540 airpcap_if_get_driver_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection, guint * PKeysCollectionSize)
 541 {
 542     if (!AirpcapLoaded || (g_PAirpcapGetDriverKeys==NULL)) return FALSE;
 543     return g_PAirpcapGetDriverKeys(AdapterHandle,KeysCollection,PKeysCollectionSize);
 544 }
 545
 546 /*
 547  * This function will create a new airpcap_if_info_t using a name and a description
 548  */
 549 airpcap_if_info_t *
 550 airpcap_if_info_new(char *name, char *description)
 551 {
 552     PAirpcapHandle ad;
 553     gchar ebuf[AIRPCAP_ERRBUF_SIZE];
 554
 555     airpcap_if_info_t *if_info = NULL;
 556
 557     /* Probably I have to switch on the leds!!! */
 558     ad = airpcap_if_open(name, ebuf);
 559     if (ad)
 560     {
 561         if_info = (airpcap_if_info_t *)g_malloc0(sizeof (airpcap_if_info_t));
 562         if_info->name = g_strdup(name);
 563         if (description == NULL){
 564             if_info->description = NULL;
 565         }else{
 566             if_info->description = g_strdup(description);
 567         }
 568
 569         if_info->ip_addr = NULL;
 570         if_info->loopback = FALSE;
 571         airpcap_if_get_fcs_validation(ad,&(if_info->CrcValidationOn));
 572         airpcap_if_get_fcs_presence(ad,&(if_info->IsFcsPresent));
 573         airpcap_if_get_link_type(ad,&(if_info->linkType));
 574         airpcap_if_get_device_channel_ex(ad,&(if_info->channelInfo));
 575         if_info->pSupportedChannels = airpcap_if_get_device_supported_channels_array(ad, &(if_info->numSupportedChannels));
 576         airpcap_if_turn_led_on(ad, 0);
 577         airpcap_if_get_decryption_state(ad, &(if_info->DecryptionOn));
 578         if_info->led = TRUE;
 579         if_info->blinking = FALSE;
 580         if_info->saved = TRUE; /* NO NEED TO BE SAVED */
 581
 582         /* get the keys, if everything is ok, close the adapter */
 583         if (airpcap_if_load_keys(ad,if_info))
 584         {
 585             airpcap_if_close(ad);
 586         }
 587     }
 588     return if_info;
 589 }
 590
 591 /*
 592  * This function will create a new fake drivers' interface, to load global keys...
 593  */
 594 airpcap_if_info_t*
 595 airpcap_driver_fake_if_info_new(void)
 596 {
 597     PAirpcapHandle ad;
 598     gchar ebuf[AIRPCAP_ERRBUF_SIZE];
 599
 600     airpcap_if_info_t *if_info = NULL;
 601     airpcap_if_info_t *fake_if_info = NULL;
 602
 603     /* Maybe for some reason no airpcap adapter is found */
 604     if (g_airpcap_if_list == NULL)
 605         return NULL;
 606
 607     /*
 608      * Retrieve the first AirPcap adapter available. If no interface is found,
 609      * it is not possible to retrieve the driver's settings, so return NULL.
 610      */
 611     if_info = (airpcap_if_info_t *)g_list_nth_data(g_airpcap_if_list,0);
 612     if (if_info == NULL)
 613         return NULL;
 614
 615     /* Open the 'fake' adapter */
 616     ad = airpcap_if_open(if_info->name, ebuf);
 617     if (ad)
 618     {
 619         fake_if_info = (airpcap_if_info_t *)g_malloc(sizeof (airpcap_if_info_t));
 620         fake_if_info->name = g_strdup(if_info->name);
 621         fake_if_info->description = g_strdup(if_info->description);
 622         fake_if_info->loopback = FALSE;
 623         fake_if_info->ip_addr = NULL;
 624         airpcap_if_get_driver_decryption_state(ad, &(fake_if_info->DecryptionOn));
 625         airpcap_if_get_fcs_validation(ad,&(fake_if_info->CrcValidationOn));
 626         airpcap_if_get_fcs_presence(ad,&(fake_if_info->IsFcsPresent));
 627         airpcap_if_get_link_type(ad,&(fake_if_info->linkType));
 628         airpcap_if_get_device_channel_ex(ad,&(fake_if_info->channelInfo));
 629         airpcap_if_turn_led_on(ad, 0);
 630         fake_if_info->led = TRUE;
 631         fake_if_info->blinking = FALSE;
 632         fake_if_info->saved = TRUE; /* NO NEED TO BE SAVED */
 633
 634         /* get the keys, if everything is ok, close the adapter */
 635         if (airpcap_if_load_driver_keys(ad,fake_if_info))
 636         {
 637             airpcap_if_close(ad);
 638         }
 639     }
 640
 641     return fake_if_info;
 642 }
 643
 644 #ifdef AIRPCAP_DEBUG
 645 /*
 646  * USED FOR DEBUG ONLY... PRINTS AN AirPcap ADAPTER STRUCTURE in a fancy way.
 647  */
 648 void
 649 airpcap_if_info_print(airpcap_if_info_t* if_info)
 650 {
 651     guint i;
 652     if (if_info == NULL)
 653     {
 654         g_print("\nWARNING : AirPcap Interface pointer is NULL!\n");
 655         return;
 656     }
 657
 658     g_print("\n----------------- AirPcap Interface \n");
 659     g_print("                      NAME: %s\n",if_info->name);
 660     g_print("               DESCRIPTION: %s\n",if_info->description);
 661     g_print("                  BLINKING: %s\n",if_info->blinking ? "TRUE" : "FALSE");
 662     g_print("     channelInfo.Frequency: %u\n",if_info->channelInfo.Frequency);
 663     g_print("    channelInfo.ExtChannel: %d\n",if_info->channelInfo.ExtChannel);
 664     g_print("             CRCVALIDATION: %s\n",if_info->CrcValidationOn ? "ON" : "OFF");
 665     g_print("                DECRYPTION: %s\n",if_info->DecryptionOn ? "ON" : "OFF");
 666     g_print("                   IP ADDR: %s\n",if_info->ip_addr!=NULL ? "NOT NULL" : "NULL");
 667     g_print("                FCSPRESENT: %s\n",if_info->IsFcsPresent ? "TRUE" : "FALSE");
 668     g_print("            KEYSCOLLECTION: %s\n",if_info->keysCollection!=NULL ? "NOT NULL" : "NULL");
 669     g_print("        KEYSCOLLECTIONSIZE: %u\n",if_info->keysCollectionSize);
 670     g_print("                       LED: %s\n",if_info->led ? "ON" : "OFF");
 671     g_print("                  LINKTYPE: %d\n",if_info->linkType);
 672     g_print("                  LOOPBACK: %s\n",if_info->loopback ? "YES" : "NO");
 673     g_print("                 (GTK) TAG: %d\n",if_info->tag);
 674     g_print("SUPPORTED CHANNELS POINTER: %p\n",if_info->pSupportedChannels);
 675     g_print("    NUM SUPPORTED CHANNELS: %u\n",if_info->numSupportedChannels);
 676
 677     for(i=0; i<(if_info->numSupportedChannels); i++){
 678         g_print("\n        SUPPORTED CHANNEL #%u\n",i+1);
 679         g_print("                   CHANNEL: %u\n",if_info->pSupportedChannels[i].Channel);
 680         g_print("                 FREQUENCY: %u\n",if_info->pSupportedChannels[i].Frequency);
 681         g_print("                     FLAGS: %u\n",if_info->pSupportedChannels[i].Flags);
 682     }
 683     g_print("\n\n");
 684 }
 685 #endif /* AIRPCAP_DEBUG */
 686
 687 /*
 688  * Function used to load the WEP keys for a selected interface
 689  */
 690 gboolean
 691 airpcap_if_load_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info)
 692 {
 693     if (!if_info) return FALSE;
 694
 695     if_info->keysCollectionSize = 0;
 696     if_info->keysCollection = NULL;
 697
 698     if (!airpcap_if_get_device_keys(ad, NULL, &(if_info->keysCollectionSize)))
 699     {
 700         if (if_info->keysCollectionSize == 0)
 701         {
 702             if_info->keysCollection = NULL;
 703             airpcap_if_close(ad);
 704             return FALSE;
 705         }
 706
 707         if_info->keysCollection = (PAirpcapKeysCollection)g_malloc(if_info->keysCollectionSize);
 708         if (!if_info->keysCollection)
 709         {
 710             if_info->keysCollectionSize = 0;
 711             if_info->keysCollection = NULL;
 712             airpcap_if_close(ad);
 713             return FALSE;
 714         }
 715
 716         airpcap_if_get_device_keys(ad, if_info->keysCollection, &(if_info->keysCollectionSize));
 717         return TRUE;
 718     }
 719
 720     airpcap_if_close(ad);
 721     return FALSE;
 722 }
 723
 724 /*
 725  * Function used to load the WEP keys for a selected interface
 726  */
 727 gboolean
 728 airpcap_if_load_driver_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info)
 729 {
 730     if_info->keysCollectionSize = 0;
 731     if_info->keysCollection = NULL;
 732
 733     if (!airpcap_if_get_driver_keys(ad, NULL, &(if_info->keysCollectionSize)))
 734     {
 735         if (if_info->keysCollectionSize == 0)
 736         {
 737             if_info->keysCollection = NULL;
 738             airpcap_if_close(ad);
 739             return FALSE;
 740         }
 741
 742         if_info->keysCollection = (PAirpcapKeysCollection)g_malloc(if_info->keysCollectionSize);
 743         if (!if_info->keysCollection)
 744         {
 745             if_info->keysCollectionSize = 0;
 746             if_info->keysCollection = NULL;
 747             airpcap_if_close(ad);
 748             return FALSE;
 749         }
 750
 751         airpcap_if_get_driver_keys(ad, if_info->keysCollection, &(if_info->keysCollectionSize));
 752         return TRUE;
 753     }
 754
 755     airpcap_if_close(ad);
 756     return FALSE;
 757 }
 758
 759 /*
 760  * Function used to save the WEP keys for a selected interface
 761  */
 762 void
 763 airpcap_if_save_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info)
 764 {
 765     if (!if_info || !AirpcapLoaded) return;
 766
 767     if (if_info->keysCollection != NULL)
 768         g_PAirpcapSetDeviceKeys(ad,if_info->keysCollection);
 769 }
 770
 771 /*
 772  * Function used to save the WEP keys for a selected interface
 773  */
 774 void
 775 airpcap_if_save_driver_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info)
 776 {
 777     if (if_info->keysCollection != NULL)
 778         airpcap_if_set_driver_keys(ad,if_info->keysCollection);
 779 }
 780
 781 /*
 782  * Callback used to free an instance of airpcap_if_info_t
 783  */
 784 static void
 785 free_airpcap_if_cb(gpointer data, gpointer user_data _U_)
 786 {
 787     airpcap_if_info_t *if_info = (airpcap_if_info_t *)data;
 788
 789     if (NULL == if_info)
 790         return;
 791
 792     if (if_info->name != NULL)
 793         g_free(if_info->name);
 794
 795     if (if_info->description != NULL)
 796         g_free(if_info->description);
 797
 798     /* XXX - FREE THE WEP KEY LIST HERE!!!*/
 799     if (if_info->keysCollection != NULL)
 800     {
 801         g_free(if_info->keysCollection);
 802         if_info->keysCollection = NULL;
 803     }
 804
 805     if (if_info->ip_addr != NULL)
 806         g_slist_free(if_info->ip_addr);
 807
 808     g_free(if_info);
 809 }
 810
 811 /*
 812  * Function used to free the airpcap interface list
 813  */
 814 void
 815 free_airpcap_interface_list(GList *if_list)
 816 {
 817     g_list_foreach(if_list, free_airpcap_if_cb, NULL);
 818     g_list_free(if_list);
 819     if_list = NULL;
 820 }
 821
 822 /*
 823  * This function will use the airpcap.dll to find all the airpcap devices.
 824  * Will return null if no device is found.
 825  */
 826 GList*
 827 get_airpcap_interface_list(int *err, char **err_str)
 828 {
 829     GList  *il = NULL;
 830     airpcap_if_info_t *if_info;
 831     int n_adapts;
 832     AirpcapDeviceDescription *devsList, *adListEntry;
 833     char errbuf[AIRPCAP_ERRBUF_SIZE];
 834
 835     *err = 0;
 836
 837     if (!AirpcapLoaded)
 838     {
 839         *err = AIRPCAP_NOT_LOADED;
 840         return il;
 841     }
 842
 843     if (!g_PAirpcapGetDeviceList(&devsList, errbuf))
 844     {
 845         /* No interfaces, return il = NULL; */
 846         *err = CANT_GET_AIRPCAP_INTERFACE_LIST;
 847         if (err_str != NULL)
 848             *err_str = cant_get_airpcap_if_list_error_message(errbuf);
 849         return il;
 850     }
 851
 852     /*
 853      * Count the adapters
 854      */
 855     adListEntry = devsList;
 856     n_adapts = 0;
 857     while(adListEntry)
 858     {
 859         n_adapts++;
 860         adListEntry = adListEntry->next;
 861     }
 862
 863     if (n_adapts == 0)
 864     {
 865         /* No interfaces, return il= NULL */
 866         g_PAirpcapFreeDeviceList(devsList);
 867         *err = NO_AIRPCAP_INTERFACES_FOUND;
 868         if (err_str != NULL)
 869             *err_str = NULL;
 870         return il;
 871     }
 872
 873     /*
 874      * Insert the adapters in our list
 875      */
 876     adListEntry = devsList;
 877     while(adListEntry)
 878     {
 879         if_info = airpcap_if_info_new(adListEntry->Name, adListEntry->Description);
 880         if (if_info != NULL){
 881             il = g_list_append(il, if_info);
 882         }
 883
 884         adListEntry = adListEntry->next;
 885     }
 886
 887     g_PAirpcapFreeDeviceList(devsList);
 888
 889     return il;
 890 }
 891
 892 /*
 893  * Used to retrieve the interface given the name
 894  * (the name is used in AirpcapOpen)
 895  */
 896 airpcap_if_info_t* get_airpcap_if_from_name(GList* if_list, const gchar* name)
 897 {
 898     GList* curr;
 899     airpcap_if_info_t* if_info;
 900
 901     for (curr = g_list_first(if_list); curr; curr = g_list_next(curr)) {
 902         if_info = (airpcap_if_info_t *)curr->data;
 903         if (if_info && (g_ascii_strcasecmp(if_info->name, name) == 0)) {
 904             return (if_info);
 905         }
 906         /* Try the name without the "\\.\" prefix. */
 907         if (strlen(if_info->name) > 4 && (g_ascii_strcasecmp(if_info->name + 4, name) == 0)) {
 908             return (if_info);
 909         }
 910     }
 911     return (NULL);
 912 }
 913
 914 /*
 915  * Clear keys and decryption status for the specified interface
 916  */
 917 void
 918 airpcap_if_clear_decryption_settings(airpcap_if_info_t* info_if)
 919 {
 920     if (info_if != NULL)
 921     {
 922         if (info_if->keysCollection != NULL)
 923         {
 924             g_free(info_if->keysCollection);
 925             info_if->keysCollection = NULL;
 926         }
 927
 928         info_if->keysCollectionSize = 0;
 929
 930         info_if->DecryptionOn = AIRPCAP_DECRYPTION_OFF;
 931         info_if->saved = FALSE;
 932     }
 933 }
 934
 935 /*
 936  * Used to retrieve the two chars string from interface
 937  */
 938 gchar*
 939 airpcap_get_if_string_number(airpcap_if_info_t* if_info)
 940 {
 941     gchar* number;
 942     guint n;
 943     int a;
 944
 945     a = sscanf(if_info->name,AIRPCAP_DEVICE_NUMBER_EXTRACT_STRING,&n);
 946
 947     /* If sscanf() returned 1, it means that has read a number, so interface is not "Any"
 948      * Otherwise, check if it is the "Any" adapter...
 949      */
 950     if (a == 0)
 951     {
 952         if (g_ascii_strcasecmp(if_info->name,AIRPCAP_DEVICE_ANY_EXTRACT_STRING)!=0)
 953             number = g_strdup_printf("??");
 954         else
 955             number = g_strdup_printf(AIRPCAP_CHANNEL_ANY_NAME);
 956     }
 957     else
 958     {
 959         number = g_strdup_printf("%.2u",n);
 960     }
 961
 962     return number;
 963 }
 964
 965 /*
 966  * Used to retrieve the two chars string from interface
 967  */
 968 gchar*
 969 airpcap_get_if_string_number_from_description(gchar* description)
 970 {
 971     gchar* number;
 972     gchar* pointer;
 973
 974     number = (gchar*)g_malloc(sizeof(gchar)*3);
 975
 976     pointer = g_strrstr(description,"#\0");
 977
 978     number[0] = *(pointer+1);
 979     number[1] = *(pointer+2);
 980     number[2] = '\0';
 981
 982     return number;
 983 }
 984
 985 /*
 986  * Load the configuration for the specified interface
 987  */
 988 void
 989 airpcap_load_selected_if_configuration(airpcap_if_info_t* if_info)
 990 {
 991     gchar ebuf[AIRPCAP_ERRBUF_SIZE];
 992     PAirpcapHandle ad;
 993
 994     if (if_info != NULL)
 995     {
 996         ad = airpcap_if_open(if_info->name, ebuf);
 997
 998         if (ad)
 999         {
1000             /* Stop blinking (if it was blinking!)*/
1001             if (if_info->blinking)
1002             {
1003                 /* Turn on the light (if it was off) */
1004                 if (!(if_info->led)) airpcap_if_turn_led_on(ad, 0);
1005             }
1006
1007             /* Apply settings... */
1008             airpcap_if_get_device_channel_ex(ad,&(if_info->channelInfo));
1009             airpcap_if_get_fcs_validation(ad,&(if_info->CrcValidationOn));
1010             airpcap_if_get_fcs_presence(ad,&(if_info->IsFcsPresent));
1011             airpcap_if_get_link_type(ad,&(if_info->linkType));
1012             airpcap_if_get_decryption_state(ad, &(if_info->DecryptionOn));
1013             /* get the keys, if everything is ok, close the adapter */
1014             if (airpcap_if_load_keys(ad,if_info))
1015                 airpcap_if_close(ad);
1016
1017             if_info->saved = TRUE;
1018         }
1019 #if 0
1020         else
1021         {
1022             simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, " Error in opening adapter for %s",if_info->description);
1023         }
1024 #endif
1025     }
1026 }
1027
1028 /*
1029  * Save the configuration for the specified interface
1030  */
1031 void
1032 airpcap_save_selected_if_configuration(airpcap_if_info_t* if_info)
1033 {
1034     gchar ebuf[AIRPCAP_ERRBUF_SIZE];
1035     PAirpcapHandle ad;
1036
1037     if (if_info != NULL)
1038     {
1039         ad = airpcap_if_open(if_info->name, ebuf);
1040
1041         if (ad)
1042         {
1043             /* Stop blinking (if it was blinking!)*/
1044             if (if_info->blinking)
1045             {
1046                 /* Turn on the light (if it was off) */
1047                 if (!(if_info->led)) airpcap_if_turn_led_on(ad, 0);
1048             }
1049
1050             /* Apply settings... */
1051             airpcap_if_set_device_channel_ex(ad,if_info->channelInfo);
1052             airpcap_if_set_fcs_validation(ad,if_info->CrcValidationOn);
1053             airpcap_if_set_fcs_presence(ad,if_info->IsFcsPresent);
1054             airpcap_if_set_link_type(ad,if_info->linkType);
1055             airpcap_if_set_decryption_state(ad, if_info->DecryptionOn);
1056             airpcap_if_save_keys(ad,if_info);
1057
1058             /* ... and save them */
1059             if (!airpcap_if_store_cur_config_as_adapter_default(ad))
1060             {
1061 #if 0
1062                 simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "Cannot save Wireless configuration!!!\nRemember that in order to store the configuration in the registry you have to:\n\n- Close all the airpcap-based applications.\n- Be sure to have administrative privileges.");
1063 #endif
1064                 if_info->saved = FALSE;
1065                 airpcap_if_close(ad);
1066                 return;
1067             }
1068
1069             if_info->saved = TRUE;
1070             airpcap_if_close(ad);
1071         }
1072 #if 0
1073         else
1074         {
1075             simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, " Error in opening adapter for %s",if_info->description);
1076         }
1077 #endif
1078     }
1079 }
1080
1081 /*
1082  * Save the configuration for the specified interface
1083  */
1084 void
1085 airpcap_save_driver_if_configuration(airpcap_if_info_t* fake_if_info)
1086 {
1087     gchar ebuf[AIRPCAP_ERRBUF_SIZE];
1088     PAirpcapHandle ad;
1089
1090     if (fake_if_info != NULL)
1091     {
1092         ad = airpcap_if_open(fake_if_info->name, ebuf);
1093
1094         if (ad)
1095         {
1096             /* Apply decryption settings... */
1097             airpcap_if_set_driver_decryption_state(ad, fake_if_info->DecryptionOn);
1098             airpcap_if_save_driver_keys(ad,fake_if_info);
1099             airpcap_if_close(ad);
1100         }
1101 #if 0
1102         else
1103         {
1104             simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, " Error in opening adapter for %s",fake_if_info->description);
1105         }
1106 #endif
1107     }
1108
1109     return;
1110 }
1111
1112 /*
1113  * Free an instance of airpcap_if_info_t
1114  */
1115 void
1116 airpcap_if_info_free(airpcap_if_info_t *if_info)
1117 {
1118     if (if_info != NULL)
1119     {
1120         if (if_info->name != NULL)
1121             g_free(if_info->name);
1122
1123         if (if_info->description != NULL)
1124             g_free(if_info->description);
1125
1126         if (if_info->keysCollection != NULL)
1127         {
1128             g_free(if_info->keysCollection);
1129             if_info->keysCollection = NULL;
1130         }
1131
1132         if (if_info->ip_addr != NULL)
1133         {
1134             g_slist_free(if_info->ip_addr);
1135             if_info->ip_addr = NULL;
1136         }
1137
1138         if (if_info != NULL)
1139         {
1140             g_free(if_info);
1141             if_info = NULL;
1142         }
1143     }
1144 }
1145
1146
1147 /* DYNAMIC LIBRARY LOADER */
1148 /*
1149  *  Used to dynamically load the airpcap library in order link it only when
1150  *  it's present on the system
1151  */
1152 int load_airpcap(void)
1153 {
1154 #ifdef _WIN32
1155     gboolean base_functions     = TRUE;
1156     gboolean eleven_n_functions = TRUE;
1157
1158     if ((AirpcapLib = ws_load_library("airpcap.dll")) == NULL)
1159     {
1160         /* Report the error but go on */
1161         AirpcapVersion = AIRPCAP_DLL_NOT_FOUND;
1162         return AirpcapVersion;
1163     }
1164     else
1165     {
1166         if ((g_PAirpcapGetLastError = (AirpcapGetLastErrorHandler) GetProcAddress(AirpcapLib, "AirpcapGetLastError")) == NULL) base_functions = FALSE;
1167         if ((g_PAirpcapGetDeviceList = (AirpcapGetDeviceListHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceList")) == NULL) base_functions = FALSE;
1168         if ((g_PAirpcapFreeDeviceList = (AirpcapFreeDeviceListHandler) GetProcAddress(AirpcapLib, "AirpcapFreeDeviceList")) == NULL) base_functions = FALSE;
1169         if ((g_PAirpcapOpen = (AirpcapOpenHandler) GetProcAddress(AirpcapLib, "AirpcapOpen")) == NULL) base_functions = FALSE;
1170         if ((g_PAirpcapClose = (AirpcapCloseHandler) GetProcAddress(AirpcapLib, "AirpcapClose")) == NULL) base_functions = FALSE;
1171         if ((g_PAirpcapGetLinkType = (AirpcapGetLinkTypeHandler) GetProcAddress(AirpcapLib, "AirpcapGetLinkType")) == NULL) base_functions = FALSE;
1172         if ((g_PAirpcapSetLinkType = (AirpcapSetLinkTypeHandler) GetProcAddress(AirpcapLib, "AirpcapSetLinkType")) == NULL) base_functions = FALSE;
1173         if ((g_PAirpcapSetKernelBuffer = (AirpcapSetKernelBufferHandler) GetProcAddress(AirpcapLib, "AirpcapSetKernelBuffer")) == NULL) base_functions = FALSE;
1174         if ((g_PAirpcapSetFilter = (AirpcapSetFilterHandler) GetProcAddress(AirpcapLib, "AirpcapSetFilter")) == NULL) base_functions = FALSE;
1175         if ((g_PAirpcapGetMacAddress = (AirpcapGetMacAddressHandler) GetProcAddress(AirpcapLib, "AirpcapGetMacAddress")) == NULL) base_functions = FALSE;
1176         if ((g_PAirpcapSetMinToCopy = (AirpcapSetMinToCopyHandler) GetProcAddress(AirpcapLib, "AirpcapSetMinToCopy")) == NULL) base_functions = FALSE;
1177         if ((g_PAirpcapGetReadEvent = (AirpcapGetReadEventHandler) GetProcAddress(AirpcapLib, "AirpcapGetReadEvent")) == NULL) base_functions = FALSE;
1178         if ((g_PAirpcapRead = (AirpcapReadHandler) GetProcAddress(AirpcapLib, "AirpcapRead")) == NULL) base_functions = FALSE;
1179         if ((g_PAirpcapGetStats = (AirpcapGetStatsHandler) GetProcAddress(AirpcapLib, "AirpcapGetStats")) == NULL) base_functions = FALSE;
1180         if ((g_PAirpcapTurnLedOn = (AirpcapTurnLedOnHandler) GetProcAddress(AirpcapLib, "AirpcapTurnLedOn")) == NULL) base_functions = FALSE;
1181         if ((g_PAirpcapTurnLedOff = (AirpcapTurnLedOffHandler) GetProcAddress(AirpcapLib, "AirpcapTurnLedOff")) == NULL) base_functions = FALSE;
1182         if ((g_PAirpcapGetDeviceChannel = (AirpcapGetDeviceChannelHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceChannel")) == NULL) base_functions = FALSE;
1183         if ((g_PAirpcapSetDeviceChannel = (AirpcapSetDeviceChannelHandler) GetProcAddress(AirpcapLib, "AirpcapSetDeviceChannel")) == NULL) base_functions = FALSE;
1184         if ((g_PAirpcapGetFcsPresence = (AirpcapGetFcsPresenceHandler) GetProcAddress(AirpcapLib, "AirpcapGetFcsPresence")) == NULL) base_functions = FALSE;
1185         if ((g_PAirpcapSetFcsPresence = (AirpcapSetFcsPresenceHandler) GetProcAddress(AirpcapLib, "AirpcapSetFcsPresence")) == NULL) base_functions = FALSE;
1186         if ((g_PAirpcapGetFcsValidation = (AirpcapGetFcsValidationHandler) GetProcAddress(AirpcapLib, "AirpcapGetFcsValidation")) == NULL) base_functions = FALSE;
1187         if ((g_PAirpcapSetFcsValidation = (AirpcapSetFcsValidationHandler) GetProcAddress(AirpcapLib, "AirpcapSetFcsValidation")) == NULL) base_functions = FALSE;
1188         if ((g_PAirpcapGetDeviceKeys = (AirpcapGetDeviceKeysHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceKeys")) == NULL) base_functions = FALSE;
1189         if ((g_PAirpcapSetDeviceKeys = (AirpcapSetDeviceKeysHandler) GetProcAddress(AirpcapLib, "AirpcapSetDeviceKeys")) == NULL) base_functions = FALSE;
1190         if ((g_PAirpcapGetDecryptionState = (AirpcapGetDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapGetDecryptionState")) == NULL) base_functions = FALSE;
1191         if ((g_PAirpcapSetDecryptionState = (AirpcapSetDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapSetDecryptionState")) == NULL) base_functions = FALSE;
1192         if ((g_PAirpcapStoreCurConfigAsAdapterDefault = (AirpcapStoreCurConfigAsAdapterDefaultHandler) GetProcAddress(AirpcapLib, "AirpcapStoreCurConfigAsAdapterDefault")) == NULL) base_functions = FALSE;
1193         if ((g_PAirpcapGetVersion = (AirpcapGetVersionHandler) GetProcAddress(AirpcapLib, "AirpcapGetVersion")) == NULL) base_functions = FALSE;
1194         if ((g_PAirpcapGetDriverDecryptionState = (AirpcapGetDriverDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapGetDriverDecryptionState")) == NULL) base_functions = FALSE;
1195         if ((g_PAirpcapSetDriverDecryptionState = (AirpcapSetDriverDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapSetDriverDecryptionState")) == NULL) base_functions = FALSE;
1196         if ((g_PAirpcapGetDriverKeys = (AirpcapGetDriverKeysHandler) GetProcAddress(AirpcapLib, "AirpcapGetDriverKeys")) == NULL) base_functions = FALSE;
1197         if ((g_PAirpcapSetDriverKeys = (AirpcapSetDriverKeysHandler) GetProcAddress(AirpcapLib, "AirpcapSetDriverKeys")) == NULL) base_functions = FALSE;
1198
1199         /* TEST IF AIRPCAP SUPPORTS 11N */
1200         if ((g_PAirpcapSetDeviceChannelEx = (AirpcapSetDeviceChannelExHandler) GetProcAddress(AirpcapLib, "AirpcapSetDeviceChannelEx")) == NULL) eleven_n_functions = FALSE;
1201         if ((g_PAirpcapGetDeviceChannelEx = (AirpcapGetDeviceChannelExHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceChannelEx")) == NULL) eleven_n_functions = FALSE;
1202         if ((g_PAirpcapGetDeviceSupportedChannels = (AirpcapGetDeviceSupportedChannelsHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceSupportedChannels")) == NULL) eleven_n_functions = FALSE;
1203
1204         if (base_functions && eleven_n_functions){
1205             AirpcapLoaded = TRUE;
1206             AirpcapVersion = AIRPCAP_DLL_OK;
1207         } else if (base_functions){
1208             AirpcapLoaded = TRUE;
1209             AirpcapVersion = AIRPCAP_DLL_OLD;
1210             return AIRPCAP_DLL_OK;
1211         }else{
1212             AirpcapLoaded = FALSE;
1213             AirpcapVersion = AIRPCAP_DLL_ERROR;
1214         }
1215     }
1216     return AirpcapVersion;
1217 #else /* _WIN32 */
1218     return AIRPCAP_DLL_NOT_FOUND;
1219 #endif /* _WIN32 */
1220 }
1221
1222 /*
1223  * Append the version of AirPcap with which we were compiled to a GString.
1224  */
1225 void
1226 get_compiled_airpcap_version(GString *str)
1227 {
1228     g_string_append(str, "with AirPcap");
1229 }
1230
1231 /*
1232  * Append the version of AirPcap with which we we're running to a GString.
1233  */
1234 void
1235 get_runtime_airpcap_version(GString *str)
1236 {
1237     guint vmaj, vmin, vrev, build;
1238
1239     /* See if the DLL has been loaded successfully.  Bail if it hasn't */
1240     if (AirpcapLoaded == FALSE) {
1241         g_string_append(str, "without AirPcap");
1242         return;
1243     }
1244
1245     g_PAirpcapGetVersion(&vmaj, &vmin, &vrev, &build);
1246     g_string_append_printf(str, "with AirPcap %d.%d.%d build %d", vmaj, vmin,
1247         vrev, build);
1248 }
1249 #endif /* HAVE_AIRPCAP */
1250
1251 /*
1252  * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
1253  *
1254  * Local variables:
1255  * c-basic-offset: 4
1256  * tab-width: 8
1257  * indent-tabs-mode: nil
1258  * End:
1259  *
1260  * vi: set shiftwidth=4 tabstop=8 expandtab:
1261  * :indentSize=4:tabSize=8:noTabs=true:
1262  */