airpcap_loader.c

   1 /* airpcap_loader.c
   2  *
   3  * $Id$
   4  *
   5  * Giorgio Tino <giorgio.tino@cacetech.com>
   6  * Copyright (c) CACE Technologies, LLC 2006
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 2000 Gerald Combs
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  25  */
  26
  27 #ifdef _WIN32
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #ifdef HAVE_LIBPCAP
  34 #include <glib.h>
  35 #include <gmodule.h>
  36
  37
  38 #include <wtap.h>
  39 #include <pcap.h>
  40 #endif
  41
  42 #include "capture_ui_utils.h"
  43 #include <epan/prefs.h>
  44
  45 #include "simple_dialog.h"
  46
  47 #include <airpcap.h>
  48 #include "airpcap_loader.h"
  49
  50 /*
  51  * We load dinamically the dag library in order link it only when
  52  * it's present on the system
  53  */
  54 static HMODULE AirpcapLib;
  55
  56 static AirpcapGetLastErrorHandler g_PAirpcapGetLastError;
  57 static AirpcapGetDeviceListHandler g_PAirpcapGetDeviceList;
  58 static AirpcapFreeDeviceListHandler g_PAirpcapFreeDeviceList;
  59 static AirpcapOpenHandler g_PAirpcapOpen;
  60 static AirpcapCloseHandler g_PAirpcapClose;
  61 static AirpcapGetLinkTypeHandler g_PAirpcapGetLinkType;
  62 static AirpcapSetLinkTypeHandler g_PAirpcapSetLinkType;
  63 static AirpcapSetKernelBufferHandler g_PAirpcapSetKernelBuffer;
  64 static AirpcapSetFilterHandler g_PAirpcapSetFilter;
  65 static AirpcapGetMacAddressHandler g_PAirpcapGetMacAddress;
  66 static AirpcapSetMinToCopyHandler g_PAirpcapSetMinToCopy;
  67 static AirpcapGetReadEventHandler g_PAirpcapGetReadEvent;
  68 static AirpcapReadHandler g_PAirpcapRead;
  69 static AirpcapGetStatsHandler g_PAirpcapGetStats;
  70 static AirpcapTurnLedOnHandler g_PAirpcapTurnLedOn;
  71 static AirpcapTurnLedOffHandler g_PAirpcapTurnLedOff;
  72 static AirpcapGetDeviceChannelHandler g_PAirpcapGetDeviceChannel;
  73 static AirpcapSetDeviceChannelHandler g_PAirpcapSetDeviceChannel;
  74 static AirpcapGetFcsPresenceHandler g_PAirpcapGetFcsPresence;
  75 static AirpcapSetFcsPresenceHandler g_PAirpcapSetFcsPresence;
  76 static AirpcapGetFcsValidationHandler g_PAirpcapGetFcsValidation;
  77 static AirpcapSetFcsValidationHandler g_PAirpcapSetFcsValidation;
  78 static AirpcapGetDeviceKeysHandler g_PAirpcapGetDeviceKeys;
  79 static AirpcapSetDeviceKeysHandler g_PAirpcapSetDeviceKeys;
  80 static AirpcapGetDecryptionStateHandler g_PAirpcapGetDecryptionState;
  81 static AirpcapSetDecryptionStateHandler g_PAirpcapSetDecryptionState;
  82 static AirpcapStoreCurConfigAsAdapterDefaultHandler g_PAirpcapStoreCurConfigAsAdapterDefault;
  83
  84 /* Airpcap interface list */
  85 GList *airpcap_if_list = NULL;
  86
  87 /* Airpcap current selected interface */
  88 airpcap_if_info_t *airpcap_if_selected = NULL;
  89
  90 /* Airpcap current active interface */
  91 airpcap_if_info_t *airpcap_if_active = NULL;
  92
  93 /*
  94  * Get an error message string for a CANT_GET_INTERFACE_LIST error from
  95  * "get_airpcap_interface_list()".
  96  */
  97 gchar *
  98 cant_get_airpcap_if_list_error_message(const char *err_str)
  99 {
 100         return g_strdup_printf("Can't get list of Wireless interfaces: %s", err_str);
 101 }
 102
 103 /*
 104  * Airpcap wrapper, used to store the current settings for the selected adapter
 105  */
 106 BOOL
 107 airpcap_if_store_cur_config_as_adapter_default(PAirpcapHandle ah)
 108 {
 109         return g_PAirpcapStoreCurConfigAsAdapterDefault(ah);
 110 }
 111
 112 /*
 113  * Airpcap wrapper, used to open an airpcap adapter
 114  */
 115 PAirpcapHandle
 116 airpcap_if_open(PCHAR name, PCHAR err)
 117 {
 118         return g_PAirpcapOpen(name,err);
 119 }
 120
 121 /*
 122  * Airpcap wrapper, used to close an airpcap adapter
 123  */
 124 VOID
 125 airpcap_if_close(PAirpcapHandle handle)
 126 {
 127 g_PAirpcapClose(handle);
 128
 129 }
 130
 131 /*
 132  * Airpcap wrapper, used to turn on the led of an airpcap adapter
 133  */
 134 BOOL
 135 airpcap_if_turn_led_on(PAirpcapHandle AdapterHandle, UINT LedNumber)
 136 {
 137         return g_PAirpcapTurnLedOn(AdapterHandle,LedNumber);
 138 }
 139
 140 /*
 141  * Airpcap wrapper, used to turn off the led of an airpcap adapter
 142  */
 143 BOOL
 144 airpcap_if_turn_led_off(PAirpcapHandle AdapterHandle, UINT LedNumber)
 145 {
 146         return g_PAirpcapTurnLedOff(AdapterHandle,LedNumber);
 147 }
 148
 149 /*
 150  * Airpcap wrapper, used to get the channel of an airpcap adapter
 151  */
 152 BOOL
 153 airpcap_if_get_device_channel(PAirpcapHandle ah, PUINT ch)
 154 {
 155         return g_PAirpcapGetDeviceChannel(ah,ch);
 156 }
 157
 158 /*
 159  * Airpcap wrapper, used to set the channel of an airpcap adapter
 160  */
 161 BOOL
 162 airpcap_if_set_device_channel(PAirpcapHandle ah, UINT ch)
 163 {
 164         return g_PAirpcapSetDeviceChannel(ah,ch);
 165 }
 166
 167 /*
 168  * Airpcap wrapper, used to get the link type of an airpcap adapter
 169  */
 170 BOOL
 171 airpcap_if_get_link_type(PAirpcapHandle ah, PAirpcapLinkType lt)
 172 {
 173         return g_PAirpcapGetLinkType(ah,lt);
 174 }
 175
 176 /*
 177  * Airpcap wrapper, used to set the link type of an airpcap adapter
 178  */
 179 BOOL
 180 airpcap_if_set_link_type(PAirpcapHandle ah, AirpcapLinkType lt)
 181 {
 182         return g_PAirpcapSetLinkType(ah,lt);
 183 }
 184
 185 /*
 186  * Airpcap wrapper, used to get the fcs presence of an airpcap adapter
 187  */
 188 BOOL
 189 airpcap_if_get_fcs_presence(PAirpcapHandle ah, PBOOL fcs)
 190 {
 191         return g_PAirpcapGetFcsPresence(ah,fcs);
 192 }
 193
 194 /*
 195  * Airpcap wrapper, used to set the fcs presence of an airpcap adapter
 196  */
 197 BOOL
 198 airpcap_if_set_fcs_presence(PAirpcapHandle ah, BOOL fcs)
 199 {
 200         return g_PAirpcapSetFcsPresence(ah,fcs);
 201 }
 202
 203 /*
 204  * Airpcap wrapper, used to get the decryption enabling of an airpcap adapter
 205  */
 206 BOOL
 207 airpcap_if_get_decryption_state(PAirpcapHandle ah, PAirpcapDecryptionState PEnable)
 208 {
 209         return g_PAirpcapGetDecryptionState(ah,PEnable);
 210 }
 211
 212 /*
 213  * Airpcap wrapper, used to set the decryption enabling of an airpcap adapter
 214  */
 215 BOOL
 216 airpcap_if_set_decryption_state(PAirpcapHandle ah, AirpcapDecryptionState Enable)
 217 {
 218         return g_PAirpcapSetDecryptionState(ah,Enable);
 219 }
 220
 221 /*
 222  * Airpcap wrapper, used to get the fcs validation of an airpcap adapter
 223  */
 224 BOOL
 225 airpcap_if_get_fcs_validation(PAirpcapHandle ah, PAirpcapValidationType val)
 226 {
 227         return g_PAirpcapGetFcsValidation(ah,val);
 228 }
 229
 230 /*
 231  * Airpcap wrapper, used to set the fcs validation of an airpcap adapter
 232  */
 233 BOOL
 234 airpcap_if_set_fcs_validation(PAirpcapHandle ah, AirpcapValidationType val)
 235 {
 236         return g_PAirpcapSetFcsValidation(ah,val);
 237 }
 238
 239 /*
 240  * Airpcap wrapper, used to save the settings for the selected_if
 241  */
 242 BOOL
 243 airpcap_if_set_device_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection)
 244 {
 245         return g_PAirpcapSetDeviceKeys(AdapterHandle,KeysCollection);
 246 }
 247
 248 /*
 249  * Airpcap wrapper, used to save the settings for the selected_if
 250  */
 251 BOOL
 252 airpcap_if_get_device_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection, PUINT PKeysCollectionSize)
 253 {
 254         return g_PAirpcapGetDeviceKeys(AdapterHandle,KeysCollection,PKeysCollectionSize);
 255 }
 256
 257 /*
 258  * This function will create a new airpcap_if_info_t using a name and a description
 259  */
 260 airpcap_if_info_t *
 261 airpcap_if_info_new(char *name, char *description)
 262 {
 263 PAirpcapHandle ad;
 264 gchar ebuf[AIRPCAP_ERRBUF_SIZE];
 265
 266         airpcap_if_info_t *if_info;
 267
 268         if_info = g_malloc(sizeof (airpcap_if_info_t));
 269         if_info->name = g_strdup(name);
 270         if (description == NULL)
 271                 if_info->description = NULL;
 272         else
 273                 if_info->description = g_strdup(description);
 274         if_info->ip_addr = NULL;
 275         if_info->loopback = FALSE;
 276
 277         /* Probably I have to switch on the leds!!! */
 278         ad = airpcap_if_open(if_info->name, ebuf);
 279         if(ad)
 280                 {
 281                 airpcap_if_get_fcs_validation(ad,&(if_info->CrcValidationOn));
 282                 airpcap_if_get_fcs_presence(ad,&(if_info->IsFcsPresent));
 283                 airpcap_if_get_link_type(ad,&(if_info->linkType));
 284                 airpcap_if_get_device_channel(ad,&(if_info->channel));
 285                 airpcap_if_turn_led_on(ad, 0);
 286                 airpcap_if_get_decryption_state(ad, &(if_info->DecryptionOn));
 287                 if_info->led = TRUE;
 288                 if_info->blinking = FALSE;
 289                 if_info->saved = TRUE; /* NO NEED TO BE SAVED */
 290
 291                 /* get the keys, if everything is ok, close the adapter */
 292                 if(airpcap_if_load_keys(ad,if_info))
 293                         airpcap_if_close(ad);
 294                 }
 295         return if_info;
 296 }
 297
 298 /*
 299  * Function used to load the WEP keys for a selected interface
 300  */
 301 BOOL
 302 airpcap_if_load_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info)
 303 {
 304 if_info->keysCollectionSize = 0;
 305 if_info->keysCollection = NULL;
 306
 307 if(!airpcap_if_get_device_keys(ad, NULL, &(if_info->keysCollectionSize)))
 308         {
 309         if(if_info->keysCollectionSize == 0)
 310                 {
 311                 if_info->keysCollection = NULL;
 312                 airpcap_if_close(ad);
 313                 return FALSE;
 314                 }
 315
 316         if_info->keysCollection = (PAirpcapKeysCollection)malloc(if_info->keysCollectionSize);
 317         if(!if_info->keysCollection)
 318                 {
 319                 if_info->keysCollectionSize = 0;
 320                 if_info->keysCollection = NULL;
 321                 airpcap_if_close(ad);
 322                 return FALSE;
 323                 }
 324
 325         airpcap_if_get_device_keys(ad, if_info->keysCollection, &(if_info->keysCollectionSize));
 326         return TRUE;
 327         }
 328 airpcap_if_close(ad);
 329 return FALSE;
 330 }
 331
 332 /*
 333  * Function used to save the WEP keys for a selected interface
 334  */
 335 void
 336 airpcap_if_save_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info)
 337 {
 338         if(if_info->keysCollection != NULL)
 339                 g_PAirpcapSetDeviceKeys(ad,if_info->keysCollection);
 340 }
 341
 342 /*
 343  * Callback used to free an instance of airpcap_if_info_t
 344  */
 345 static void
 346 free_airpcap_if_cb(gpointer data, gpointer user_data _U_)
 347 {
 348         airpcap_if_info_t *if_info = data;
 349
 350         if (if_info->name != NULL)
 351                 g_free(if_info->name);
 352
 353         if (if_info->description != NULL)
 354                 g_free(if_info->description);
 355
 356         /* XXX - FREE THE WEP KEY LIST HERE!!!*/
 357         if(if_info->keysCollection != NULL)
 358                 g_free(if_info->keysCollection);
 359
 360         if(if_info->ip_addr != NULL)
 361                 g_slist_free(if_info->ip_addr);
 362
 363         if(if_info != NULL)
 364                 g_free(if_info);
 365 }
 366
 367 /*
 368  * Function used to free the airpcap interface list
 369  */
 370 void
 371 free_airpcap_interface_list(GList *if_list)
 372 {
 373         g_list_foreach(if_list, free_airpcap_if_cb, NULL);
 374         g_list_free(if_list);
 375         if_list = NULL;
 376 }
 377
 378 /*
 379  * This function will use the airpcap.dll to find all the airpcap devices.
 380  * Will return null if no device is found.
 381  */
 382 GList*
 383 get_airpcap_interface_list(int *err, char *err_str)
 384 {
 385         GList  *il = NULL;
 386         airpcap_if_info_t *if_info;
 387         int i, n_adapts;
 388         AirpcapDeviceDescription *devsList, *adListEntry;
 389
 390         if(g_PAirpcapGetDeviceList == NULL) {
 391                 /* Airpcap.dll not available */
 392                 *err = NO_AIRPCAP_INTERFACES_FOUND;
 393                 return NULL;
 394         }
 395
 396         if(!g_PAirpcapGetDeviceList(&devsList, err_str))
 397         {
 398                 /* No interfaces */
 399                 *err = NO_AIRPCAP_INTERFACES_FOUND;
 400                 return NULL;
 401         }
 402
 403         /*
 404          * Count the adapters
 405          */
 406         adListEntry = devsList;
 407         n_adapts = 0;
 408         while(adListEntry)
 409         {
 410                 n_adapts++;
 411                 adListEntry = adListEntry->next;
 412         }
 413
 414         if(n_adapts == 0)
 415         {
 416                 /* No interfaces, return il= NULL */
 417                 g_PAirpcapFreeDeviceList(devsList);
 418                 *err = NO_AIRPCAP_INTERFACES_FOUND;
 419                 return il;
 420         }
 421
 422         /*
 423          * Insert the adapters in our list
 424          */
 425         adListEntry = devsList;
 426         for(i = 0; i < n_adapts; i++)
 427         {
 428                 if_info = airpcap_if_info_new(adListEntry->Name, adListEntry->Description);
 429         il = g_list_append(il, if_info);
 430
 431                 adListEntry = adListEntry->next;
 432         }
 433
 434         g_PAirpcapFreeDeviceList(devsList);
 435
 436         return il;
 437 }
 438
 439 /*
 440  * Used to retrieve the name of the interface given the description
 441  * (the name is used in AirpcapOpen, the description is put in the combo box)
 442  */
 443 gchar* get_airpcap_name_from_description(GList* if_list, gchar* description)
 444 {
 445 unsigned int ifn;
 446 GList* curr;
 447 airpcap_if_info_t* if_info;
 448
 449 ifn = 0;
 450 if(if_list != NULL)
 451         {
 452         while( ifn < g_list_length(if_list) )
 453                 {
 454                 curr = g_list_nth(if_list, ifn);
 455
 456                 if_info = NULL;
 457                 if(curr != NULL)
 458                         if_info = curr->data;
 459                 if(if_info != NULL)
 460                         if ( g_ascii_strcasecmp(if_info->description,description) == 0)
 461                                 {
 462                                 return if_info->name;
 463                                 }
 464                 ifn++;
 465                 }
 466         }
 467 return NULL;
 468 }
 469
 470 /*
 471  * Used to retrieve the interface given the name
 472  * (the name is used in AirpcapOpen)
 473  */
 474 airpcap_if_info_t* get_airpcap_if_by_name(GList* if_list, const gchar* name)
 475 {
 476 unsigned int ifn;
 477 GList* curr;
 478 airpcap_if_info_t* if_info;
 479
 480 ifn = 0;
 481 if(if_list != NULL)
 482         {
 483         while( ifn < g_list_length(if_list) )
 484                 {
 485                 curr = g_list_nth(if_list, ifn);
 486
 487                 if_info = NULL;
 488                 if(curr != NULL)
 489                         if_info = curr->data;
 490                 if(if_info != NULL)
 491                         if ( g_ascii_strcasecmp(if_info->name,name) == 0)
 492                                 {
 493                                 return if_info;
 494                                 }
 495                 ifn++;
 496                 }
 497         }
 498 return NULL;
 499 }
 500
 501 /*
 502  * Returns the ASCII string of a key given the key bytes
 503  */
 504 gchar*
 505 airpcap_get_key_string(AirpcapKey key)
 506 {
 507 unsigned int j = 0;
 508 unsigned int l = 0;
 509 gchar *dst,*src;
 510
 511 src = NULL;
 512
 513 if(key.KeyType == AIRPCAP_KEYTYPE_WEP)
 514         {
 515         if(key.KeyLen != 0)
 516             {
 517         /* Allocate the string used to store the ASCII representation of the WEP key */
 518         dst = (gchar*)g_malloc(sizeof(gchar)*WEP_KEY_MAX_CHAR_SIZE + 1);
 519         /* Make sure that the first char is '\0' in order to make g_strlcat() work */
 520         dst[0]='\0';
 521
 522             for(j = 0; j < key.KeyLen; j++)
 523                     {
 524                     src = g_strdup_printf("%.2x\0", key.KeyData[j]);
 525                     /*
 526              * XXX - use g_strconcat() instead ???
 527              */
 528                 l = g_strlcat(dst,src,WEP_KEY_MAX_CHAR_SIZE+1);
 529                 }
 530         g_free(src);
 531         }
 532         }
 533
 534 return dst;
 535 }
 536
 537 /*
 538  * Used to retrieve the airpcap_if_info_t of the selected interface given the
 539  * description (that is the entry of the combo box).
 540  */
 541 gpointer get_airpcap_if_from_description(GList* if_list, const gchar* description)
 542 {
 543 unsigned int ifn;
 544 GList* curr;
 545 airpcap_if_info_t* if_info;
 546
 547 ifn = 0;
 548 if(if_list != NULL)
 549         {
 550         while( ifn < g_list_length(if_list) )
 551                 {
 552                 curr = g_list_nth(if_list, ifn);
 553
 554                 if_info = NULL;
 555                 if(curr != NULL)
 556                         if_info = curr->data;
 557                 if(if_info != NULL)
 558                         if ( g_ascii_strcasecmp(if_info->description,description) == 0)
 559                                 {
 560                                 return if_info;
 561                                 }
 562                 ifn++;
 563                 }
 564         }
 565 return NULL;
 566 }
 567
 568 /*
 569  * Used to retrieve the two chars string from interface
 570  */
 571 gchar*
 572 airpcap_get_if_string_number(airpcap_if_info_t* if_info)
 573 {
 574         gchar* number;
 575         guint n;
 576         int a;
 577
 578         a = sscanf(if_info->name,AIRPCAP_DEVICE_NUMBER_EXTRACT_STRING,&n);
 579
 580     /* If sscanf() returned 1, it means that has read a number, so interface is not "Any"
 581      * Otherwise, check if it is the "Any" adapter...
 582      */
 583      if(a == 0)
 584           {
 585           if(g_strcasecmp(if_info->name,AIRPCAP_DEVICE_ANY_EXTRACT_STRING)!=0)
 586                number = g_strdup_printf("??");
 587           else
 588                number = g_strdup_printf(AIRPCAP_CHANNEL_ANY_NAME);
 589           }
 590      else
 591           {
 592           number = g_strdup_printf("%.2u\0",n);
 593           }
 594
 595         return number;
 596 }
 597
 598 /*
 599  * Used to retrieve the two chars string from interface
 600  */
 601 gchar*
 602 airpcap_get_if_string_number_from_description(gchar* description)
 603 {
 604         gchar* number;
 605         gchar* pointer;
 606
 607         number = (gchar*)g_malloc(sizeof(gchar)*3);
 608
 609         pointer = g_strrstr(description,"#\0");
 610
 611         number[0] = *(pointer+1);
 612         number[1] = *(pointer+2);
 613         number[2] = '\0';
 614
 615         return number;
 616 }
 617
 618 /*
 619  * Returns the default airpcap interface of a list, NULL if list is empty
 620  */
 621 airpcap_if_info_t*
 622 airpcap_get_default_if(GList* airpcap_if_list)
 623 {
 624 int ifn = 0;
 625 GList* popdown_if_list = NULL;
 626 GList* curr = NULL;
 627
 628         gchar* s;
 629         airpcap_if_info_t* if_info = NULL;
 630
 631     if(prefs.capture_device != NULL)
 632     {
 633         s = g_strdup(get_if_name(prefs.capture_device));
 634         if_info = get_airpcap_if_by_name(airpcap_if_list,g_strdup(get_if_name(prefs.capture_device)));
 635         g_free(s);
 636     }
 637         return if_info;
 638 }
 639
 640 /*
 641  * Load the configuration for the specified interface
 642  */
 643 void
 644 airpcap_load_selected_if_configuration(airpcap_if_info_t* if_info)
 645 {
 646 gchar ebuf[AIRPCAP_ERRBUF_SIZE];
 647 PAirpcapHandle ad;
 648
 649 if(if_info != NULL)
 650         {
 651         ad = airpcap_if_open(get_airpcap_name_from_description(airpcap_if_list, if_info->description), ebuf);
 652
 653         if(ad)
 654                 {
 655                 /* Stop blinking (if it was blinkig!)*/
 656                 if(if_info->blinking)
 657                         {
 658                         /* Turn on the light (if it was off) */
 659                         if(!(if_info->led)) airpcap_if_turn_led_on(ad, 0);
 660                         }
 661
 662                 /* Apply settings... */
 663                 airpcap_if_get_device_channel(ad,&(if_info->channel));
 664                 airpcap_if_get_fcs_validation(ad,&(if_info->CrcValidationOn));
 665                 airpcap_if_get_fcs_presence(ad,&(if_info->IsFcsPresent));
 666                 airpcap_if_get_link_type(ad,&(if_info->linkType));
 667                 airpcap_if_get_decryption_state(ad, &(if_info->DecryptionOn));
 668                 /* get the keys, if everything is ok, close the adapter */
 669                 if(airpcap_if_load_keys(ad,if_info))
 670                         airpcap_if_close(ad);
 671
 672                 if_info->saved = TRUE;
 673                 }
 674         else
 675                 {
 676                 simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, " Error in opening adapter for %s",if_info->description);
 677                 }
 678         }
 679 }
 680
 681 /*
 682  * Save the configuration for the specified interface
 683  */
 684 void
 685 airpcap_save_selected_if_configuration(airpcap_if_info_t* if_info)
 686 {
 687 gchar ebuf[AIRPCAP_ERRBUF_SIZE];
 688 PAirpcapHandle ad;
 689
 690 if(if_info != NULL)
 691         {
 692         ad = airpcap_if_open(get_airpcap_name_from_description(airpcap_if_list, if_info->description), ebuf);
 693
 694         if(ad)
 695                 {
 696                 /* Stop blinking (if it was blinkig!)*/
 697                 if(if_info->blinking)
 698                         {
 699                         /* Turn on the light (if it was off) */
 700                         if(!(if_info->led)) airpcap_if_turn_led_on(ad, 0);
 701                         }
 702
 703                 /* Apply settings... */
 704                 airpcap_if_set_device_channel(ad,if_info->channel);
 705                 airpcap_if_set_fcs_validation(ad,if_info->CrcValidationOn);
 706                 airpcap_if_set_fcs_presence(ad,if_info->IsFcsPresent);
 707                 airpcap_if_set_link_type(ad,if_info->linkType);
 708                 airpcap_if_set_decryption_state(ad, if_info->DecryptionOn);
 709                 airpcap_if_save_keys(ad,if_info);
 710
 711                 /* ... and save them */
 712                 if(!airpcap_if_store_cur_config_as_adapter_default(ad))
 713                         {
 714                         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.");
 715                         if_info->saved = FALSE;
 716                         airpcap_if_close(ad);
 717                         return;
 718                         }
 719
 720                 if_info->saved = TRUE;
 721                 airpcap_if_close(ad);
 722                 }
 723         else
 724                 {
 725                 simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, " Error in opening adapter for %s",if_info->description);
 726                 }
 727         }
 728 }
 729
 730 /*
 731  *  Used to dinamically load the airpcap library in order link it only when
 732  *  it's present on the system
 733  */
 734 BOOL load_airpcap(void)
 735 {
 736  if((AirpcapLib =  LoadLibrary(TEXT("airpcap.dll"))) == NULL)
 737  {
 738   /* Report the error but go on */
 739   return FALSE;
 740  }
 741  else
 742  {
 743   if((g_PAirpcapGetLastError = (AirpcapGetLastErrorHandler) GetProcAddress(AirpcapLib, "AirpcapGetLastError")) == NULL) return FALSE;
 744   if((g_PAirpcapGetDeviceList = (AirpcapGetDeviceListHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceList")) == NULL) return FALSE;
 745   if((g_PAirpcapFreeDeviceList = (AirpcapFreeDeviceListHandler) GetProcAddress(AirpcapLib, "AirpcapFreeDeviceList")) == NULL) return FALSE;
 746   if((g_PAirpcapOpen = (AirpcapOpenHandler) GetProcAddress(AirpcapLib, "AirpcapOpen")) == NULL) return FALSE;
 747   if((g_PAirpcapClose = (AirpcapCloseHandler) GetProcAddress(AirpcapLib, "AirpcapClose")) == NULL) return FALSE;
 748   if((g_PAirpcapGetLinkType = (AirpcapGetLinkTypeHandler) GetProcAddress(AirpcapLib, "AirpcapGetLinkType")) == NULL) return FALSE;
 749   if((g_PAirpcapSetLinkType = (AirpcapSetLinkTypeHandler) GetProcAddress(AirpcapLib, "AirpcapSetLinkType")) == NULL) return FALSE;
 750   if((g_PAirpcapSetKernelBuffer = (AirpcapSetKernelBufferHandler) GetProcAddress(AirpcapLib, "AirpcapSetKernelBuffer")) == NULL) return FALSE;
 751   if((g_PAirpcapSetFilter = (AirpcapSetFilterHandler) GetProcAddress(AirpcapLib, "AirpcapSetFilter")) == NULL) return FALSE;
 752   if((g_PAirpcapGetMacAddress = (AirpcapGetMacAddressHandler) GetProcAddress(AirpcapLib, "AirpcapGetMacAddress")) == NULL) return FALSE;
 753   if((g_PAirpcapSetMinToCopy = (AirpcapSetMinToCopyHandler) GetProcAddress(AirpcapLib, "AirpcapSetMinToCopy")) == NULL) return FALSE;
 754   if((g_PAirpcapGetReadEvent = (AirpcapGetReadEventHandler) GetProcAddress(AirpcapLib, "AirpcapGetReadEvent")) == NULL) return FALSE;
 755   if((g_PAirpcapRead = (AirpcapReadHandler) GetProcAddress(AirpcapLib, "AirpcapRead")) == NULL) return FALSE;
 756   if((g_PAirpcapGetStats = (AirpcapGetStatsHandler) GetProcAddress(AirpcapLib, "AirpcapGetStats")) == NULL) return FALSE;
 757   if((g_PAirpcapTurnLedOn = (AirpcapTurnLedOnHandler) GetProcAddress(AirpcapLib, "AirpcapTurnLedOn")) == NULL) return FALSE;
 758   if((g_PAirpcapTurnLedOff = (AirpcapTurnLedOffHandler) GetProcAddress(AirpcapLib, "AirpcapTurnLedOff")) == NULL) return FALSE;
 759   if((g_PAirpcapGetDeviceChannel = (AirpcapGetDeviceChannelHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceChannel")) == NULL) return FALSE;
 760   if((g_PAirpcapSetDeviceChannel = (AirpcapSetDeviceChannelHandler) GetProcAddress(AirpcapLib, "AirpcapSetDeviceChannel")) == NULL) return FALSE;
 761   if((g_PAirpcapGetFcsPresence = (AirpcapGetFcsPresenceHandler) GetProcAddress(AirpcapLib, "AirpcapGetFcsPresence")) == NULL) return FALSE;
 762   if((g_PAirpcapSetFcsPresence = (AirpcapSetFcsPresenceHandler) GetProcAddress(AirpcapLib, "AirpcapSetFcsPresence")) == NULL) return FALSE;
 763   if((g_PAirpcapGetFcsValidation = (AirpcapGetFcsValidationHandler) GetProcAddress(AirpcapLib, "AirpcapGetFcsValidation")) == NULL) return FALSE;
 764   if((g_PAirpcapSetFcsValidation = (AirpcapSetFcsValidationHandler) GetProcAddress(AirpcapLib, "AirpcapSetFcsValidation")) == NULL) return FALSE;
 765   if((g_PAirpcapGetDeviceKeys = (AirpcapGetDeviceKeysHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceKeys")) == NULL) return FALSE;
 766   if((g_PAirpcapSetDeviceKeys = (AirpcapSetDeviceKeysHandler) GetProcAddress(AirpcapLib, "AirpcapSetDeviceKeys")) == NULL) return FALSE;
 767   if((g_PAirpcapGetDecryptionState = (AirpcapGetDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapGetDecryptionState")) == NULL) return FALSE;
 768   if((g_PAirpcapSetDecryptionState = (AirpcapSetDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapSetDecryptionState")) == NULL) return FALSE;
 769   if((g_PAirpcapStoreCurConfigAsAdapterDefault = (AirpcapStoreCurConfigAsAdapterDefaultHandler) GetProcAddress(AirpcapLib, "AirpcapStoreCurConfigAsAdapterDefault")) == NULL) return FALSE;
 770   return TRUE;
 771  }
 772 }
 773
 774 #endif /* _WIN32 */