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 HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #ifdef HAVE_AIRPCAP
  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 <epan/packet.h>
  43 #include <epan/prefs.h>
  44 #include <epan/prefs-int.h>
  45 #include <epan/crypt/wep-wpadefs.h>
  46 #include <epan/crypt/airpdcap_ws.h>
  47 #include <epan/strutil.h>
  48 #include <epan/frequency-utils.h>
  49 #include "capture_ui_utils.h"
  50 #include <wsutil/file_util.h>
  51
  52 #include "ui/simple_dialog.h"
  53
  54 #include <airpcap.h>
  55 #include "airpcap_loader.h"
  56
  57
  58 /*
  59  * Set to TRUE if the DLL was successfully loaded AND all functions
  60  * are present.
  61  */
  62 static gboolean AirpcapLoaded = FALSE;
  63
  64 #ifdef _WIN32
  65 /*
  66  * We load dynamically the dag library in order link it only when
  67  * it's present on the system
  68  */
  69 static void * AirpcapLib = NULL;
  70
  71 static AirpcapGetLastErrorHandler g_PAirpcapGetLastError;
  72 static AirpcapSetKernelBufferHandler g_PAirpcapSetKernelBuffer;
  73 static AirpcapSetFilterHandler g_PAirpcapSetFilter;
  74 static AirpcapGetMacAddressHandler g_PAirpcapGetMacAddress;
  75 static AirpcapSetMinToCopyHandler g_PAirpcapSetMinToCopy;
  76 static AirpcapGetReadEventHandler g_PAirpcapGetReadEvent;
  77 static AirpcapReadHandler g_PAirpcapRead;
  78 static AirpcapGetStatsHandler g_PAirpcapGetStats;
  79 #endif
  80
  81 static int AirpcapVersion = 3;
  82
  83 static AirpcapGetDeviceListHandler g_PAirpcapGetDeviceList;
  84 static AirpcapFreeDeviceListHandler g_PAirpcapFreeDeviceList;
  85 static AirpcapOpenHandler g_PAirpcapOpen;
  86 static AirpcapCloseHandler g_PAirpcapClose;
  87 static AirpcapGetLinkTypeHandler g_PAirpcapGetLinkType;
  88 static AirpcapSetLinkTypeHandler g_PAirpcapSetLinkType;
  89 static AirpcapTurnLedOnHandler g_PAirpcapTurnLedOn;
  90 static AirpcapTurnLedOffHandler g_PAirpcapTurnLedOff;
  91 static AirpcapGetDeviceChannelHandler g_PAirpcapGetDeviceChannel;
  92 static AirpcapSetDeviceChannelHandler g_PAirpcapSetDeviceChannel;
  93 static AirpcapGetFcsPresenceHandler g_PAirpcapGetFcsPresence;
  94 static AirpcapSetFcsPresenceHandler g_PAirpcapSetFcsPresence;
  95 static AirpcapGetFcsValidationHandler g_PAirpcapGetFcsValidation;
  96 static AirpcapSetFcsValidationHandler g_PAirpcapSetFcsValidation;
  97 static AirpcapGetDeviceKeysHandler g_PAirpcapGetDeviceKeys;
  98 static AirpcapSetDeviceKeysHandler g_PAirpcapSetDeviceKeys;
  99 static AirpcapGetDriverKeysHandler g_PAirpcapGetDriverKeys;
 100 static AirpcapSetDriverKeysHandler g_PAirpcapSetDriverKeys;
 101 static AirpcapGetDecryptionStateHandler g_PAirpcapGetDecryptionState;
 102 static AirpcapSetDecryptionStateHandler g_PAirpcapSetDecryptionState;
 103 static AirpcapGetDriverDecryptionStateHandler g_PAirpcapGetDriverDecryptionState;
 104 static AirpcapSetDriverDecryptionStateHandler g_PAirpcapSetDriverDecryptionState;
 105 static AirpcapStoreCurConfigAsAdapterDefaultHandler g_PAirpcapStoreCurConfigAsAdapterDefault;
 106 static AirpcapGetVersionHandler g_PAirpcapGetVersion;
 107 static AirpcapSetDeviceChannelExHandler g_PAirpcapSetDeviceChannelEx;
 108 static AirpcapGetDeviceChannelExHandler g_PAirpcapGetDeviceChannelEx;
 109 static AirpcapGetDeviceSupportedChannelsHandler g_PAirpcapGetDeviceSupportedChannels;
 110
 111 /* Airpcap interface list */
 112 GList *airpcap_if_list = NULL;
 113
 114 /* Airpcap current selected interface */
 115 airpcap_if_info_t *airpcap_if_selected = NULL;
 116
 117 /* Airpcap current active interface */
 118 airpcap_if_info_t *airpcap_if_active = NULL;
 119
 120 /* WLAN preferences pointer */
 121 module_t *wlan_prefs = NULL;
 122
 123 Dot11Channel *pSupportedChannels;
 124 guint numSupportedChannels;
 125
 126 static AirpcapChannelInfo LegacyChannels[] =
 127 {
 128         {2412, 0, {0,0,0}},
 129         {2417, 0, {0,0,0}},
 130         {2422, 0, {0,0,0}},
 131         {2427, 0, {0,0,0}},
 132         {2432, 0, {0,0,0}},
 133         {2437, 0, {0,0,0}},
 134         {2442, 0, {0,0,0}},
 135         {2447, 0, {0,0,0}},
 136         {2452, 0, {0,0,0}},
 137         {2457, 0, {0,0,0}},
 138         {2462, 0, {0,0,0}},
 139         {2467, 0, {0,0,0}},
 140         {2472, 0, {0,0,0}},
 141         {2484, 0, {0,0,0}},
 142 };
 143
 144 static guint num_legacy_channels = 14;
 145
 146 /*
 147  * Callback used by the load_wlan_keys() routine in order to read a WEP decryption key
 148  */
 149 static guint
 150 get_wep_key(pref_t *pref, gpointer ud)
 151 {
 152     gchar *key_string = NULL;
 153     guint8 key_type = AIRPDCAP_KEY_TYPE_WEP;
 154     keys_cb_data_t* user_data;
 155
 156     decryption_key_t* new_key;
 157
 158     /* Retrieve user data info */
 159     user_data = (keys_cb_data_t*)ud;
 160
 161     if (g_ascii_strncasecmp(pref->name, "wep_key", 7) == 0 && pref->type == PREF_STRING)
 162     {
 163         /* strip out key type */
 164         if (g_ascii_strncasecmp(*pref->varp.string, STRING_KEY_TYPE_WEP ":", 4) == 0) {
 165                key_string = (gchar*)(*pref->varp.string)+4;
 166         }
 167         else if (g_ascii_strncasecmp(*pref->varp.string, STRING_KEY_TYPE_WPA_PWD ":", 8) == 0) {
 168                key_string = (gchar*)(*pref->varp.string)+8;
 169           key_type = AIRPDCAP_KEY_TYPE_WPA_PWD;
 170         }
 171         else if (g_ascii_strncasecmp(*pref->varp.string, STRING_KEY_TYPE_WPA_PSK ":", 8) == 0) {
 172                key_string = (gchar*)(*pref->varp.string)+8;
 173           key_type = AIRPDCAP_KEY_TYPE_WPA_PSK;
 174         }
 175         else {
 176           key_type = AIRPDCAP_KEY_TYPE_WEP;
 177                key_string = (gchar*)*pref->varp.string;
 178         }
 179
 180             /* Here we have the string describing the key... */
 181             new_key = parse_key_string(key_string, key_type);
 182
 183             if( new_key != NULL)
 184             {
 185                /* Key is added only if not null ... */
 186                user_data->list = g_list_append(user_data->list,new_key);
 187                user_data->number_of_keys++;
 188                user_data->current_index++;
 189             }
 190     }
 191     return 0;
 192 }
 193
 194 /* Returs TRUE if the WEP key is valid, false otherwise */
 195 gboolean
 196 wep_key_is_valid(char* key)
 197 {
 198     GString *new_key_string;
 199     guint i=0;
 200
 201     if(key == NULL)
 202         return FALSE;
 203
 204     new_key_string = g_string_new(key);
 205
 206     if( ((new_key_string->len) > WEP_KEY_MAX_CHAR_SIZE) || ((new_key_string->len) < 2))
 207     {
 208         g_string_free(new_key_string,FALSE);
 209         return FALSE;
 210     }
 211     if((new_key_string->len % 2) != 0)
 212     {
 213         g_string_free(new_key_string,FALSE);
 214         return FALSE;
 215     }
 216     for(i = 0; i < new_key_string->len; i++)
 217     {
 218         if(!g_ascii_isxdigit(new_key_string->str[i]))
 219         {
 220             g_string_free(new_key_string,FALSE);
 221             return FALSE;
 222         }
 223     }
 224
 225     g_string_free(new_key_string,FALSE);
 226     return TRUE;
 227 }
 228
 229 /* Callback used by the save_wlan_keys() routine in order to write a decryption key */
 230 static guint
 231 set_wep_key(pref_t *pref, gpointer ud _U_)
 232 {
 233     gchar *my_string = NULL;
 234     keys_cb_data_t* user_data;
 235     gint wep_key_number = 0;
 236
 237     decryption_key_t* new_key;
 238
 239     /* Retrieve user data info */
 240     user_data = (keys_cb_data_t*)ud;
 241
 242     if (g_ascii_strncasecmp(pref->name, "wep_key", 7) == 0 && pref->type == PREF_STRING)
 243     {
 244         /* Ok, the pref we're gonna set is a wep_key ... but what number? */
 245         sscanf(pref->name,"wep_key%d",&wep_key_number);
 246
 247         if(user_data->current_index < user_data->number_of_keys)
 248         {
 249             if(wep_key_number == (user_data->current_index+1))
 250             {
 251                 /* Retrieve the nth decryption_key_t structure pointer */
 252                 new_key = (decryption_key_t*)g_list_nth_data(user_data->list,user_data->current_index);
 253
 254                 /* Free the old key string */
 255                 g_free((void *)*pref->varp.string);
 256
 257                 /* Create the new string describing the decryption key */
 258                 my_string = get_key_string(new_key);
 259
 260                 /* Duplicate the string, and assign it to the variable pointer */
 261                 *pref->varp.string = (void *)g_strdup(my_string);
 262
 263                 /* Free the previously allocated string */
 264                 g_free(my_string);
 265             }
 266         }
 267         else /* If the number of keys has been reduced somehow, we need to delete all the other keys
 268               * (remember that the new ones have been probably overwritten)
 269               */
 270         {
 271             g_free((void *)*pref->varp.string);
 272             *pref->varp.string = (void *)g_strdup("");  /* Do not just free memory!!! Put an 'empty' string! */
 273         }
 274         user_data->current_index++;
 275     }
 276
 277     return 0;
 278 }
 279
 280 /*
 281  * Function used to read the Decryption Keys from the preferences and store them
 282  * properly into the airpcap adapter.
 283  */
 284 gboolean
 285 load_wlan_driver_wep_keys(void)
 286 {
 287     keys_cb_data_t* user_data;
 288     guint i;
 289
 290     /* Retrieve the wlan preferences */
 291     wlan_prefs = prefs_find_module("wlan");
 292
 293     /* Allocate a structure used to keep infos  between the callbacks */
 294     user_data = (keys_cb_data_t*)g_malloc(sizeof(keys_cb_data_t));
 295
 296     /* Fill the structure */
 297     user_data->list = NULL;
 298     user_data->current_index = 0;
 299     user_data->number_of_keys= 0; /* Still unknown */
 300
 301     /* Run the callback on each 802.11 preference */
 302     prefs_pref_foreach(wlan_prefs, get_wep_key, (gpointer)user_data);
 303
 304     /* Now the key list should be filled */
 305
 306     /*
 307      * Signal that we've changed things, and run the 802.11 dissector's
 308      * callback
 309      */
 310     wlan_prefs->prefs_changed = TRUE;
 311
 312     prefs_apply(wlan_prefs);
 313
 314     write_wlan_driver_wep_keys_to_registry(user_data->list);
 315
 316     /* FREE MEMORY */
 317     /* free the WEP key string */
 318     for(i=0;i<g_list_length(user_data->list);i++)
 319     {
 320         g_free(g_list_nth(user_data->list,i)->data);
 321     }
 322
 323     /* free the (empty) list */
 324     g_list_free(user_data->list);
 325
 326     /* free the user_data structure */
 327     g_free(user_data);
 328
 329     /* airpcap_if_info_free(fake_info_if); */
 330
 331     return TRUE;
 332 }
 333
 334 /*
 335  * This function will tell the airpcap driver the key list to use
 336  * This will be stored into the registry...
 337  */
 338 gboolean
 339 write_wlan_wep_keys_to_registry(airpcap_if_info_t* info_if, GList* key_list)
 340 {
 341     guint i,j;
 342     GString *new_key;
 343     gchar s[3];
 344     PAirpcapKeysCollection KeysCollection;
 345     guint KeysCollectionSize;
 346     guint8 KeyByte;
 347     guint keys_in_list = 0;
 348     decryption_key_t* key_item = NULL;
 349
 350     keys_in_list = g_list_length(key_list);
 351
 352     /*
 353      * Calculate the size of the keys collection
 354      */
 355     KeysCollectionSize = sizeof(AirpcapKeysCollection) + keys_in_list * sizeof(AirpcapKey);
 356
 357     /*
 358      * Allocate the collection
 359      */
 360     KeysCollection = (PAirpcapKeysCollection)g_malloc(KeysCollectionSize);
 361     if(!KeysCollection)
 362     {
 363         return FALSE;
 364     }
 365
 366     /*
 367      * Populate the key collection
 368      */
 369     KeysCollection->nKeys = keys_in_list;
 370
 371     for(i = 0; i < keys_in_list; i++)
 372     {
 373         KeysCollection->Keys[i].KeyType = AIRPDCAP_KEY_TYPE_WEP;
 374
 375         /* Retrieve the Item corresponding to the i-th key */
 376         key_item = (decryption_key_t*)g_list_nth_data(key_list,i);
 377         new_key = g_string_new(key_item->key->str);
 378
 379         KeysCollection->Keys[i].KeyLen = (guint) new_key->len / 2;
 380         memset(&KeysCollection->Keys[i].KeyData, 0, sizeof(KeysCollection->Keys[i].KeyData));
 381
 382         for(j = 0 ; j < new_key->len; j += 2)
 383         {
 384             s[0] = new_key->str[j];
 385             s[1] = new_key->str[j+1];
 386             s[2] = '\0';
 387             KeyByte = (guint8)strtol(s, NULL, 16);
 388             KeysCollection->Keys[i].KeyData[j / 2] = KeyByte;
 389         }
 390
 391         g_string_free(new_key,TRUE);
 392
 393     }
 394     /*
 395      * Free the old adapter key collection!
 396      */
 397     if(info_if->keysCollection != NULL)
 398         g_free(info_if->keysCollection);
 399
 400     /*
 401      * Set this collection ad the new one
 402      */
 403     info_if->keysCollection = KeysCollection;
 404     info_if->keysCollectionSize = KeysCollectionSize;
 405
 406     /*
 407      * Configuration must be saved
 408      */
 409     info_if->saved = FALSE;
 410
 411     /*
 412      * Write down the changes to the registry
 413      */
 414     airpcap_save_selected_if_configuration(info_if);
 415
 416     return TRUE;
 417 }
 418
 419 /*
 420  * This function will tell the airpcap driver the key list to use
 421  * This will be stored into the registry...
 422  */
 423 gboolean
 424 write_wlan_driver_wep_keys_to_registry(GList* key_list)
 425 {
 426     guint i,j,k,n,y;
 427     GString *new_key;
 428     gchar s[3];
 429     PAirpcapKeysCollection KeysCollection;
 430     guint KeysCollectionSize;
 431     guint8 KeyByte;
 432     guint keys_in_list = 0;
 433     decryption_key_t* key_item = NULL;
 434     airpcap_if_info_t* fake_info_if = NULL;
 435
 436     /* Create the fake_info_if from the first adapter of the list */
 437     fake_info_if = airpcap_driver_fake_if_info_new();
 438
 439     if(fake_info_if == NULL)
 440         return FALSE;
 441
 442     /*
 443      * XXX - When WPA will be supported, change this to: keys_in_list = g_list_length(key_list);
 444      * but right now we will have to count only the WEP keys (or we will have a malloc-mess :-) )
 445      */
 446     n = g_list_length(key_list);
 447     for(k = 0; k < n; k++ )
 448         if(((decryption_key_t*)g_list_nth_data(key_list,k))->type == AIRPDCAP_KEY_TYPE_WEP)
 449             keys_in_list++;
 450
 451     /*
 452      * Calculate the size of the keys collection
 453      */
 454     KeysCollectionSize = sizeof(AirpcapKeysCollection) + keys_in_list * sizeof(AirpcapKey);
 455
 456     /*
 457      * Allocate the collection
 458      */
 459     KeysCollection = (PAirpcapKeysCollection)g_malloc(KeysCollectionSize);
 460     if(!KeysCollection)
 461     {
 462         return FALSE;
 463     }
 464
 465     /*
 466      * Populate the key collection
 467      */
 468     KeysCollection->nKeys = keys_in_list;
 469
 470     /*
 471      * XXX - If we have, let's say, six keys, the first three are WEP, then two are WPA, and the
 472      * last is WEP, we have to scroll the whole list (n) but increment the array counter only
 473      * when a WEP key is found (y) .. When WPA will be supported by the driver, I'll have to change
 474      * this
 475      */
 476     y = 0; /* Current position in the key list */
 477
 478     for(i = 0; i < n; i++)
 479     {
 480         /* Retrieve the Item corresponding to the i-th key */
 481         key_item = (decryption_key_t*)g_list_nth_data(key_list,i);
 482
 483         /*
 484          * XXX - The AIRPDCAP_KEY_TYPE_WEP is the only supported right now!
 485          * We will have to modify the AirpcapKey structure in order to
 486          * support the other two types! What happens now, is that simply the
 487          * not supported keys will just be discarded (they will be saved in Wireshark though)
 488          */
 489         if(key_item->type == AIRPDCAP_KEY_TYPE_WEP)
 490         {
 491             KeysCollection->Keys[y].KeyType = AIRPDCAP_KEY_TYPE_WEP;
 492
 493             new_key = g_string_new(key_item->key->str);
 494
 495             KeysCollection->Keys[y].KeyLen = (guint) new_key->len / 2;
 496             memset(&KeysCollection->Keys[y].KeyData, 0, sizeof(KeysCollection->Keys[y].KeyData));
 497
 498             for(j = 0 ; j < new_key->len; j += 2)
 499             {
 500                 s[0] = new_key->str[j];
 501                 s[1] = new_key->str[j+1];
 502                 s[2] = '\0';
 503                 KeyByte = (guint8)strtol(s, NULL, 16);
 504                 KeysCollection->Keys[y].KeyData[j / 2] = KeyByte;
 505             }
 506             /* XXX - Change when WPA will be supported!!! */
 507             y++;
 508             g_string_free(new_key,TRUE);
 509         }
 510         else if(key_item->type == AIRPDCAP_KEY_TYPE_WPA_PWD)
 511         {
 512             /* XXX - The driver cannot deal with this kind of key yet... */
 513         }
 514         else if(key_item->type == AIRPDCAP_KEY_TYPE_WPA_PMK)
 515         {
 516             /* XXX - The driver cannot deal with this kind of key yet... */
 517         }
 518     }
 519
 520     /*
 521      * Free the old adapter key collection!
 522      */
 523     if(fake_info_if->keysCollection != NULL)
 524         g_free(fake_info_if->keysCollection);
 525
 526     /*
 527      * Set this collection ad the new one
 528      */
 529     fake_info_if->keysCollection = KeysCollection;
 530     fake_info_if->keysCollectionSize = KeysCollectionSize;
 531
 532     /*
 533      * Configuration must be saved
 534      */
 535     fake_info_if->saved = FALSE;
 536
 537     /*
 538      * Write down the changes to the registry
 539      */
 540     airpcap_save_driver_if_configuration(fake_info_if);
 541
 542     airpcap_if_info_free(fake_info_if);
 543
 544     return TRUE;
 545 }
 546
 547 /*
 548  *  Function used to save to the preference file the Decryption Keys.
 549  */
 550 int
 551 save_wlan_driver_wep_keys(void)
 552 {
 553     GList* key_list = NULL;
 554     char* tmp_key = NULL;
 555     guint keys_in_list,i;
 556     keys_cb_data_t* user_data;
 557     airpcap_if_info_t* fake_info_if = NULL;
 558
 559     /* Create the fake_info_if from the first adapter of the list */
 560     fake_info_if = airpcap_driver_fake_if_info_new();
 561
 562     if(fake_info_if == NULL)
 563         return 0;
 564
 565     /* Retrieve the wlan preferences */
 566     wlan_prefs = prefs_find_module("wlan");
 567
 568     /* Allocate a structure used to keep infos  between the callbacks */
 569     user_data = (keys_cb_data_t*)g_malloc(sizeof(keys_cb_data_t));
 570
 571     /* Number of keys in key list */
 572     if(fake_info_if->keysCollectionSize != 0)
 573         keys_in_list = (guint)(fake_info_if->keysCollectionSize -  sizeof(AirpcapKeysCollection))/sizeof(AirpcapKey);
 574     else
 575         keys_in_list = 0;
 576
 577     for(i=0; i<keys_in_list; i++)
 578     {
 579     /* Only if it is a WEP key... */
 580         if(fake_info_if->keysCollection->Keys[i].KeyType == AIRPDCAP_KEY_TYPE_WEP)
 581         {
 582             tmp_key = airpcap_get_key_string(fake_info_if->keysCollection->Keys[i]);
 583             key_list = g_list_append(key_list,g_strdup(tmp_key));
 584             g_free(tmp_key);
 585         }
 586     }
 587
 588     /* Now we know the exact number of WEP keys in the list, so store it ... */
 589     keys_in_list = g_list_length(key_list);
 590
 591     /* Fill the structure */
 592     user_data->list = key_list;
 593     user_data->current_index = 0;
 594     user_data->number_of_keys= keys_in_list;
 595
 596     /* Retrieve the wlan preferences */
 597     wlan_prefs = prefs_find_module("wlan");
 598
 599     /* Run the callback on each 802.11 preference */
 600     prefs_pref_foreach(wlan_prefs, set_wep_key,  (gpointer)user_data);
 601
 602     /* Signal that we've changed things, and run the 802.11 dissector's
 603      * callback */
 604     wlan_prefs->prefs_changed = TRUE;
 605
 606     /* Apply changes for the specified preference */
 607     prefs_apply(wlan_prefs);
 608
 609     /* FREE MEMORY */
 610     /* free the WEP key string */
 611     for(i=0;i<g_list_length(user_data->list);i++)
 612     {
 613         g_free(g_list_nth(user_data->list,i)->data);
 614     }
 615
 616     /* free the (empty) list */
 617     g_list_free(user_data->list);
 618
 619     /* free the user_data structure */
 620     g_free(user_data);
 621
 622     airpcap_if_info_free(fake_info_if);
 623
 624     return keys_in_list;
 625 }
 626
 627 /*
 628  *  Function used to save to the preference file the Decryption Keys.
 629  */
 630 int
 631 save_wlan_wireshark_wep_keys(GList* key_ls)
 632 {
 633     GList* key_list = NULL;
 634     guint keys_in_list,i;
 635     keys_cb_data_t* user_data;
 636     decryption_key_t* tmp_dk;
 637
 638     /* Retrieve the wlan preferences */
 639     wlan_prefs = prefs_find_module("wlan");
 640
 641     /* Allocate a structure used to keep infos  between the callbacks */
 642     user_data = (keys_cb_data_t*)g_malloc(sizeof(keys_cb_data_t));
 643
 644     keys_in_list = g_list_length(key_ls);
 645
 646     key_list = key_ls;
 647
 648     /* Fill the structure */
 649     user_data->list = key_list;
 650     user_data->current_index = 0;
 651     user_data->number_of_keys= keys_in_list;
 652
 653     /* Retrieve the wlan preferences */
 654     wlan_prefs = prefs_find_module("wlan");
 655
 656     /* Run the callback on each 802.11 preference */
 657     prefs_pref_foreach(wlan_prefs, set_wep_key,  (gpointer)user_data);
 658
 659     /* Signal that we've changed things, and run the 802.11 dissector's
 660      * callback */
 661     wlan_prefs->prefs_changed = TRUE;
 662
 663     /* Apply changes for the specified preference */
 664     prefs_apply(wlan_prefs);
 665
 666     /* FREE MEMORY */
 667     /* free the WEP key string */
 668     for(i=0;i<g_list_length(user_data->list);i++)
 669     {
 670         tmp_dk = (decryption_key_t*)g_list_nth(user_data->list,i)->data;
 671         g_string_free(tmp_dk->key,TRUE);
 672         if(tmp_dk->ssid != NULL) g_byte_array_free(tmp_dk->ssid,TRUE);
 673     }
 674
 675     /* free the (empty) list */
 676     g_list_free(user_data->list);
 677
 678     /* free the user_data structure */
 679     g_free(user_data);
 680
 681     return keys_in_list;
 682 }
 683
 684 /*
 685  * Get an error message string for a CANT_GET_INTERFACE_LIST error from
 686  * "get_airpcap_interface_list()".
 687  */
 688 static gchar *
 689 cant_get_airpcap_if_list_error_message(const char *err_str)
 690 {
 691     return g_strdup_printf("Can't get list of Wireless interfaces: %s", err_str);
 692 }
 693
 694 /*
 695  * Airpcap wrapper, used to store the current settings for the selected adapter
 696  */
 697 gboolean
 698 airpcap_if_store_cur_config_as_adapter_default(PAirpcapHandle ah)
 699 {
 700     if (!AirpcapLoaded) return FALSE;
 701     return g_PAirpcapStoreCurConfigAsAdapterDefault(ah);
 702 }
 703
 704 /*
 705  * Airpcap wrapper, used to open an airpcap adapter
 706  */
 707 PAirpcapHandle
 708 airpcap_if_open(gchar * name, gchar * err)
 709 {
 710     if (!AirpcapLoaded) return NULL;
 711     if (name == NULL) return NULL;
 712     return g_PAirpcapOpen(name,err);
 713 }
 714
 715 /*
 716  * Airpcap wrapper, used to close an airpcap adapter
 717  */
 718 void
 719 airpcap_if_close(PAirpcapHandle handle)
 720 {
 721     if (!AirpcapLoaded) return;
 722     g_PAirpcapClose(handle);
 723 }
 724
 725 /*
 726  * Retrieve the state of the Airpcap DLL
 727  */
 728 int
 729 airpcap_get_dll_state(void)
 730 {
 731   return AirpcapVersion;
 732 }
 733
 734 /*
 735  * Airpcap wrapper, used to turn on the led of an airpcap adapter
 736  */
 737 gboolean
 738 airpcap_if_turn_led_on(PAirpcapHandle AdapterHandle, guint LedNumber)
 739 {
 740     if (!AirpcapLoaded) return FALSE;
 741     return g_PAirpcapTurnLedOn(AdapterHandle,LedNumber);
 742 }
 743
 744 /*
 745  * Airpcap wrapper, used to turn off the led of an airpcap adapter
 746  */
 747 gboolean
 748 airpcap_if_turn_led_off(PAirpcapHandle AdapterHandle, guint LedNumber)
 749 {
 750     if (!AirpcapLoaded) return FALSE;
 751     return g_PAirpcapTurnLedOff(AdapterHandle,LedNumber);
 752 }
 753
 754 /*
 755  * Airpcap wrapper, used to get the channel of an airpcap adapter
 756  */
 757 gboolean
 758 airpcap_if_get_device_channel(PAirpcapHandle ah, guint * ch)
 759 {
 760     if (!AirpcapLoaded) return FALSE;
 761     return g_PAirpcapGetDeviceChannel(ah,ch);
 762 }
 763
 764 /*
 765  * Airpcap wrapper, used to get the supported channels of an airpcap adapter
 766  */
 767 gboolean
 768 airpcap_if_get_device_supported_channels(PAirpcapHandle ah, AirpcapChannelInfo **cInfo, guint * nInfo)
 769 {
 770     if (!AirpcapLoaded) return FALSE;
 771     if (airpcap_get_dll_state() == AIRPCAP_DLL_OLD){
 772       *nInfo = num_legacy_channels;
 773       *cInfo = (AirpcapChannelInfo*)&LegacyChannels;
 774
 775       return TRUE;
 776     } else if (airpcap_get_dll_state() == AIRPCAP_DLL_OK){
 777       return g_PAirpcapGetDeviceSupportedChannels(ah, cInfo, nInfo);
 778     }
 779     return FALSE;
 780 }
 781
 782 /*
 783  * Airpcap wrapper, used to get the supported channels of an airpcap adapter
 784  */
 785 Dot11Channel*
 786 airpcap_if_get_device_supported_channels_array(PAirpcapHandle ah, guint * pNumSupportedChannels)
 787 {
 788     AirpcapChannelInfo *chanInfo;
 789     guint i=0, j=0, numInfo = 0;
 790
 791     if (!AirpcapLoaded)
 792         return NULL;
 793     if (airpcap_if_get_device_supported_channels(ah, &chanInfo, &numInfo) == FALSE)
 794         return NULL;
 795     numSupportedChannels = 0;
 796
 797     /*
 798      * allocate a bigger array
 799      */
 800     if (numInfo == 0)
 801         return NULL;
 802
 803     pSupportedChannels = g_malloc(numInfo * (sizeof *pSupportedChannels));
 804
 805     for (i = 0; i < numInfo; i++)
 806     {
 807         guint supportedChannel = G_MAXUINT;
 808
 809         /*
 810          * search if we have it already
 811          */
 812         for (j = 0; j < numSupportedChannels; j++)
 813         {
 814             if (pSupportedChannels[j].Frequency == chanInfo[i].Frequency)
 815             {
 816                 supportedChannel = j;
 817                 break;
 818             }
 819         }
 820
 821         if (supportedChannel == G_MAXUINT)
 822         {
 823             /*
 824              * not found, create a new item
 825              */
 826             pSupportedChannels[numSupportedChannels].Frequency = chanInfo[i].Frequency;
 827
 828             switch(chanInfo[i].ExtChannel)
 829             {
 830                 case -1:
 831                     pSupportedChannels[numSupportedChannels].Flags = FLAG_CAN_BE_LOW;
 832                     break;
 833                 case +1:
 834                     pSupportedChannels[numSupportedChannels].Flags = FLAG_CAN_BE_HIGH;
 835                     break;
 836                 case 0:
 837                 default:
 838                     pSupportedChannels[numSupportedChannels].Flags = 0;
 839             }
 840
 841             /*
 842              * Gather channel information
 843              */
 844
 845             pSupportedChannels[numSupportedChannels].Flags |=
 846                 FREQ_IS_BG(pSupportedChannels[numSupportedChannels].Frequency) ?
 847                     FLAG_IS_BG_CHANNEL : FLAG_IS_A_CHANNEL;
 848             pSupportedChannels[numSupportedChannels].Channel =
 849                 ieee80211_mhz_to_chan(pSupportedChannels[numSupportedChannels].Frequency);
 850             numSupportedChannels++;
 851         }
 852         else
 853         {
 854             /*
 855              * just update the ext channel flags
 856              */
 857             switch(chanInfo[i].ExtChannel)
 858             {
 859                 case -1:
 860                     pSupportedChannels[supportedChannel].Flags |= FLAG_CAN_BE_LOW;
 861                     break;
 862                 case +1:
 863                     pSupportedChannels[supportedChannel].Flags |= FLAG_CAN_BE_HIGH;
 864                     break;
 865                 case 0:
 866                 default:
 867                     break;
 868             }
 869         }
 870     }
 871
 872     if (numSupportedChannels < 1)
 873         return NULL;
 874     /*
 875      * Now sort the list by frequency
 876      */
 877     for (i = 0 ; i < numSupportedChannels - 1; i++)
 878     {
 879         for (j = i + 1; j < numSupportedChannels; j++)
 880         {
 881             if (pSupportedChannels[i].Frequency > pSupportedChannels[j].Frequency)
 882             {
 883                 Dot11Channel temp = pSupportedChannels[i];
 884                 pSupportedChannels[i] = pSupportedChannels[j];
 885                 pSupportedChannels[j] = temp;
 886             }
 887         }
 888     }
 889
 890     *pNumSupportedChannels = numSupportedChannels;
 891     return pSupportedChannels;
 892 }
 893
 894 /*
 895  * Airpcap wrapper, used to set the channel of an airpcap adapter
 896  */
 897 gboolean
 898 airpcap_if_set_device_channel(PAirpcapHandle ah, guint ch)
 899 {
 900     if (!AirpcapLoaded) return FALSE;
 901     return g_PAirpcapSetDeviceChannel(ah,ch);
 902 }
 903
 904 /*
 905  * Airpcap wrapper, used to set the frequency of an airpcap adapter
 906  */
 907 gboolean
 908 airpcap_if_set_device_channel_ex(PAirpcapHandle ah, AirpcapChannelInfo ChannelInfo)
 909 {
 910     if (!AirpcapLoaded) return FALSE;
 911     if (airpcap_get_dll_state() == AIRPCAP_DLL_OLD){
 912       gint channel = 0;
 913       channel = ieee80211_mhz_to_chan(ChannelInfo.Frequency);
 914
 915       if (channel < 0){
 916         return FALSE;
 917       } else {
 918         return airpcap_if_set_device_channel(ah, channel);
 919       }
 920     } else if (airpcap_get_dll_state() == AIRPCAP_DLL_OK){
 921       return g_PAirpcapSetDeviceChannelEx (ah, ChannelInfo);
 922     }
 923
 924     return FALSE;
 925 }
 926
 927 /*
 928  * Airpcap wrapper, used to get the frequency of an airpcap adapter
 929  */
 930 gboolean
 931 airpcap_if_get_device_channel_ex(PAirpcapHandle ah, PAirpcapChannelInfo pChannelInfo)
 932 {
 933     if (!AirpcapLoaded) return FALSE;
 934
 935     pChannelInfo->Frequency = 0;
 936     pChannelInfo->ExtChannel = 0;
 937     pChannelInfo->Reserved[0] = 0;
 938     pChannelInfo->Reserved[1] = 0;
 939     pChannelInfo->Reserved[2] = 0;
 940
 941     if (airpcap_get_dll_state() == AIRPCAP_DLL_OLD){
 942       guint channel = 0;
 943       guint chan_freq = 0;
 944
 945       if (!airpcap_if_get_device_channel(ah, &channel)) return FALSE;
 946
 947       chan_freq = ieee80211_chan_to_mhz(channel, TRUE);
 948       if (chan_freq == 0) return FALSE;
 949       pChannelInfo->Frequency = chan_freq;
 950
 951       return TRUE;
 952     } else if (airpcap_get_dll_state() == AIRPCAP_DLL_OK){
 953       return g_PAirpcapGetDeviceChannelEx (ah, pChannelInfo);
 954     }
 955     return FALSE;
 956 }
 957
 958 /*
 959  * Airpcap wrapper, used to get the link type of an airpcap adapter
 960  */
 961 gboolean
 962 airpcap_if_get_link_type(PAirpcapHandle ah, PAirpcapLinkType lt)
 963 {
 964     if (!AirpcapLoaded) return FALSE;
 965     return g_PAirpcapGetLinkType(ah,lt);
 966 }
 967
 968 /*
 969  * Airpcap wrapper, used to set the link type of an airpcap adapter
 970  */
 971 gboolean
 972 airpcap_if_set_link_type(PAirpcapHandle ah, AirpcapLinkType lt)
 973 {
 974     if (!AirpcapLoaded) return FALSE;
 975     return g_PAirpcapSetLinkType(ah,lt);
 976 }
 977
 978 /*
 979  * Airpcap wrapper, used to get the fcs presence of an airpcap adapter
 980  */
 981 gboolean
 982 airpcap_if_get_fcs_presence(PAirpcapHandle ah, gboolean * fcs)
 983 {
 984     if (!AirpcapLoaded) return FALSE;
 985     return g_PAirpcapGetFcsPresence(ah,fcs);
 986 }
 987
 988 /*
 989  * Airpcap wrapper, used to set the fcs presence of an airpcap adapter
 990  */
 991 gboolean
 992 airpcap_if_set_fcs_presence(PAirpcapHandle ah, gboolean fcs)
 993 {
 994     if (!AirpcapLoaded) return FALSE;
 995     return g_PAirpcapSetFcsPresence(ah,fcs);
 996 }
 997
 998 /*
 999  * Airpcap wrapper, used to get the decryption enabling of an airpcap adapter
1000  */
1001 gboolean
1002 airpcap_if_get_decryption_state(PAirpcapHandle ah, PAirpcapDecryptionState PEnable)
1003 {
1004     if (!AirpcapLoaded) return FALSE;
1005     return g_PAirpcapGetDecryptionState(ah,PEnable);
1006 }
1007
1008 /*
1009  * Airpcap wrapper, used to set the decryption enabling of an airpcap adapter
1010  */
1011 gboolean
1012 airpcap_if_set_decryption_state(PAirpcapHandle ah, AirpcapDecryptionState Enable)
1013 {
1014     if (!AirpcapLoaded) return FALSE;
1015     return g_PAirpcapSetDecryptionState(ah,Enable);
1016 }
1017
1018 /*
1019  * Airpcap wrapper, used to get the decryption enabling of an airpcap driver
1020  */
1021 gboolean
1022 airpcap_if_get_driver_decryption_state(PAirpcapHandle ah, PAirpcapDecryptionState PEnable)
1023 {
1024     if (!AirpcapLoaded || (g_PAirpcapGetDriverDecryptionState==NULL)) return FALSE;
1025     return g_PAirpcapGetDriverDecryptionState(ah,PEnable);
1026 }
1027
1028 /*
1029  * Airpcap wrapper, used to set the decryption enabling of an airpcap driver
1030  */
1031 gboolean
1032 airpcap_if_set_driver_decryption_state(PAirpcapHandle ah, AirpcapDecryptionState Enable)
1033 {
1034     if (!AirpcapLoaded || (g_PAirpcapSetDriverDecryptionState==NULL)) return FALSE;
1035     return g_PAirpcapSetDriverDecryptionState(ah,Enable);
1036 }
1037
1038 /*
1039  * Airpcap wrapper, used to get the fcs validation of an airpcap adapter
1040  */
1041 gboolean
1042 airpcap_if_get_fcs_validation(PAirpcapHandle ah, PAirpcapValidationType val)
1043 {
1044     if (!AirpcapLoaded) return FALSE;
1045     return g_PAirpcapGetFcsValidation(ah,val);
1046 }
1047
1048 /*
1049  * Airpcap wrapper, used to set the fcs validation of an airpcap adapter
1050  */
1051 gboolean
1052 airpcap_if_set_fcs_validation(PAirpcapHandle ah, AirpcapValidationType val)
1053 {
1054     if (!AirpcapLoaded) return FALSE;
1055     return g_PAirpcapSetFcsValidation(ah,val);
1056 }
1057
1058 /*
1059  * Airpcap wrapper, used to save the settings for the selected_if
1060  */
1061 gboolean
1062 airpcap_if_set_device_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection)
1063 {
1064     if (!AirpcapLoaded) return FALSE;
1065     return g_PAirpcapSetDeviceKeys(AdapterHandle,KeysCollection);
1066 }
1067
1068 /*
1069  * Airpcap wrapper, used to save the settings for the selected_if
1070  */
1071 gboolean
1072 airpcap_if_get_device_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection, guint * PKeysCollectionSize)
1073 {
1074     if (!AirpcapLoaded) return FALSE;
1075     return g_PAirpcapGetDeviceKeys(AdapterHandle,KeysCollection,PKeysCollectionSize);
1076 }
1077
1078 /*
1079  * Airpcap wrapper, used to save the driver's set of keys
1080  */
1081 gboolean
1082 airpcap_if_set_driver_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection)
1083 {
1084     if (!AirpcapLoaded || (g_PAirpcapSetDriverKeys==NULL)) return FALSE;
1085     return g_PAirpcapSetDriverKeys(AdapterHandle,KeysCollection);
1086 }
1087
1088 /*
1089  * Airpcap wrapper, used to load the driver's set of keys
1090  */
1091 gboolean
1092 airpcap_if_get_driver_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection, guint * PKeysCollectionSize)
1093 {
1094     if (!AirpcapLoaded || (g_PAirpcapGetDriverKeys==NULL)) return FALSE;
1095     return g_PAirpcapGetDriverKeys(AdapterHandle,KeysCollection,PKeysCollectionSize);
1096 }
1097
1098 /*
1099  * This function will create a new airpcap_if_info_t using a name and a description
1100  */
1101 airpcap_if_info_t *
1102 airpcap_if_info_new(char *name, char *description)
1103 {
1104     PAirpcapHandle ad;
1105     gchar ebuf[AIRPCAP_ERRBUF_SIZE];
1106
1107     airpcap_if_info_t *if_info = NULL;
1108
1109     /* Probably I have to switch on the leds!!! */
1110     ad = airpcap_if_open(name, ebuf);
1111     if(ad)
1112     {
1113                 if_info = g_malloc0(sizeof (airpcap_if_info_t));
1114                 if_info->name = g_strdup(name);
1115                 if (description == NULL){
1116                         if_info->description = NULL;
1117                 }else{
1118                         if_info->description = g_strdup(description);
1119                 }
1120
1121                 if_info->ip_addr = NULL;
1122                 if_info->loopback = FALSE;
1123                 airpcap_if_get_fcs_validation(ad,&(if_info->CrcValidationOn));
1124                 airpcap_if_get_fcs_presence(ad,&(if_info->IsFcsPresent));
1125                 airpcap_if_get_link_type(ad,&(if_info->linkType));
1126                 airpcap_if_get_device_channel_ex(ad,&(if_info->channelInfo));
1127                 if_info->pSupportedChannels = airpcap_if_get_device_supported_channels_array(ad, &(if_info->numSupportedChannels));
1128                 airpcap_if_turn_led_on(ad, 0);
1129                 airpcap_if_get_decryption_state(ad, &(if_info->DecryptionOn));
1130                 if_info->led = TRUE;
1131                 if_info->blinking = FALSE;
1132                 if_info->saved = TRUE; /* NO NEED TO BE SAVED */
1133
1134                 /* get the keys, if everything is ok, close the adapter */
1135                 if(airpcap_if_load_keys(ad,if_info))
1136                 {
1137                         airpcap_if_close(ad);
1138                 }
1139     }
1140     return if_info;
1141 }
1142
1143 /*
1144  * This function will create a new fake drivers' interface, to load global keys...
1145  */
1146 airpcap_if_info_t*
1147 airpcap_driver_fake_if_info_new(void)
1148 {
1149     PAirpcapHandle ad;
1150     gchar ebuf[AIRPCAP_ERRBUF_SIZE];
1151
1152     airpcap_if_info_t *if_info = NULL;
1153     airpcap_if_info_t *fake_if_info = NULL;
1154
1155     /* Maybe for some reason no airpcap adapter is found */
1156     if(airpcap_if_list == NULL)
1157         return NULL;
1158
1159     /*
1160      * Retrieve the first AirPcap adapter available. If no interface is found,
1161      * it is not possible to retrieve the driver's settings, so return NULL.
1162      */
1163     if_info = g_list_nth_data(airpcap_if_list,0);
1164     if(if_info == NULL)
1165         return NULL;
1166
1167     /* Open the 'fake' adapter */
1168     ad = airpcap_if_open(if_info->name, ebuf);
1169     if(ad)
1170     {
1171                 fake_if_info = g_malloc(sizeof (airpcap_if_info_t));
1172                 fake_if_info->name = g_strdup(if_info->name);
1173                 fake_if_info->description = g_strdup(if_info->description);
1174                 fake_if_info->loopback = FALSE;
1175                 fake_if_info->ip_addr = NULL;
1176                 airpcap_if_get_driver_decryption_state(ad, &(fake_if_info->DecryptionOn));
1177                 airpcap_if_get_fcs_validation(ad,&(fake_if_info->CrcValidationOn));
1178                 airpcap_if_get_fcs_presence(ad,&(fake_if_info->IsFcsPresent));
1179                 airpcap_if_get_link_type(ad,&(fake_if_info->linkType));
1180                 airpcap_if_get_device_channel_ex(ad,&(fake_if_info->channelInfo));
1181                 airpcap_if_turn_led_on(ad, 0);
1182                 fake_if_info->led = TRUE;
1183                 fake_if_info->blinking = FALSE;
1184                 fake_if_info->saved = TRUE; /* NO NEED TO BE SAVED */
1185
1186                 /* get the keys, if everything is ok, close the adapter */
1187                 if(airpcap_if_load_driver_keys(ad,fake_if_info))
1188                 {
1189                         airpcap_if_close(ad);
1190                 }
1191     }
1192
1193     return fake_if_info;
1194 }
1195
1196 /*
1197  * USED FOR DEBUG ONLY... PRINTS AN AirPcap ADAPTER STRUCTURE in a fancy way.
1198  */
1199 void
1200 airpcap_if_info_print(airpcap_if_info_t* if_info)
1201 {
1202     guint i;
1203     if(if_info == NULL)
1204     {
1205                 g_print("\nWARNING : AirPcap Interface pointer is NULL!\n");
1206                 return;
1207     }
1208
1209     g_print("\n----------------- AirPcap Interface \n");
1210     g_print("                      NAME: %s\n",if_info->name);
1211     g_print("               DESCRIPTION: %s\n",if_info->description);
1212     g_print("                  BLINKING: %s\n",if_info->blinking ? "TRUE" : "FALSE");
1213     g_print("     channelInfo.Frequency: %u\n",if_info->channelInfo.Frequency);
1214     g_print("    channelInfo.ExtChannel: %d\n",if_info->channelInfo.ExtChannel);
1215     g_print("             CRCVALIDATION: %s\n",if_info->CrcValidationOn ? "ON" : "OFF");
1216     g_print("                DECRYPTION: %s\n",if_info->DecryptionOn ? "ON" : "OFF");
1217     g_print("                   IP ADDR: %s\n",if_info->ip_addr!=NULL ? "NOT NULL" : "NULL");
1218     g_print("                FCSPRESENT: %s\n",if_info->IsFcsPresent ? "TRUE" : "FALSE");
1219     g_print("            KEYSCOLLECTION: %s\n",if_info->keysCollection!=NULL ? "NOT NULL" : "NULL");
1220     g_print("        KEYSCOLLECTIONSIZE: %u\n",if_info->keysCollectionSize);
1221     g_print("                       LED: %s\n",if_info->led ? "ON" : "OFF");
1222     g_print("                  LINKTYPE: %d\n",if_info->linkType);
1223     g_print("                  LOOPBACK: %s\n",if_info->loopback ? "YES" : "NO");
1224     g_print("                 (GTK) TAG: %d\n",if_info->tag);
1225     g_print("SUPPORTED CHANNELS POINTER: %p\n",if_info->pSupportedChannels);
1226     g_print("    NUM SUPPORTED CHANNELS: %u\n",if_info->numSupportedChannels);
1227
1228     for(i=0; i<(if_info->numSupportedChannels); i++){
1229       g_print("\n        SUPPORTED CHANNEL #%u\n",i+1);
1230       g_print("                   CHANNEL: %u\n",if_info->pSupportedChannels[i].Channel);
1231       g_print("                 FREQUENCY: %u\n",if_info->pSupportedChannels[i].Frequency);
1232       g_print("                     FLAGS: %u\n",if_info->pSupportedChannels[i].Flags);
1233     }
1234     g_print("\n\n");
1235 }
1236
1237 /*
1238  * Function used to load the WEP keys for a selected interface
1239  */
1240 gboolean
1241 airpcap_if_load_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info)
1242 {
1243     if(!if_info) return FALSE;
1244
1245     if_info->keysCollectionSize = 0;
1246     if_info->keysCollection = NULL;
1247
1248     if(!airpcap_if_get_device_keys(ad, NULL, &(if_info->keysCollectionSize)))
1249     {
1250         if(if_info->keysCollectionSize == 0)
1251         {
1252             if_info->keysCollection = NULL;
1253             airpcap_if_close(ad);
1254             return FALSE;
1255         }
1256
1257         if_info->keysCollection = (PAirpcapKeysCollection)g_malloc(if_info->keysCollectionSize);
1258         if(!if_info->keysCollection)
1259         {
1260             if_info->keysCollectionSize = 0;
1261             if_info->keysCollection = NULL;
1262             airpcap_if_close(ad);
1263             return FALSE;
1264         }
1265
1266         airpcap_if_get_device_keys(ad, if_info->keysCollection, &(if_info->keysCollectionSize));
1267         return TRUE;
1268     }
1269
1270     airpcap_if_close(ad);
1271     return FALSE;
1272 }
1273
1274 /*
1275  * Function used to load the WEP keys for a selected interface
1276  */
1277 gboolean
1278 airpcap_if_load_driver_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info)
1279 {
1280     if_info->keysCollectionSize = 0;
1281     if_info->keysCollection = NULL;
1282
1283     if(!airpcap_if_get_driver_keys(ad, NULL, &(if_info->keysCollectionSize)))
1284     {
1285         if(if_info->keysCollectionSize == 0)
1286         {
1287             if_info->keysCollection = NULL;
1288             airpcap_if_close(ad);
1289             return FALSE;
1290         }
1291
1292         if_info->keysCollection = (PAirpcapKeysCollection)g_malloc(if_info->keysCollectionSize);
1293         if(!if_info->keysCollection)
1294         {
1295             if_info->keysCollectionSize = 0;
1296             if_info->keysCollection = NULL;
1297             airpcap_if_close(ad);
1298             return FALSE;
1299         }
1300
1301         airpcap_if_get_driver_keys(ad, if_info->keysCollection, &(if_info->keysCollectionSize));
1302         return TRUE;
1303     }
1304
1305     airpcap_if_close(ad);
1306     return FALSE;
1307 }
1308
1309 /*
1310  * Function used to save the WEP keys for a selected interface
1311  */
1312 void
1313 airpcap_if_save_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info)
1314 {
1315     if(!if_info || !AirpcapLoaded) return;
1316
1317     if(if_info->keysCollection != NULL)
1318         g_PAirpcapSetDeviceKeys(ad,if_info->keysCollection);
1319 }
1320
1321 /*
1322  * Function used to save the WEP keys for a selected interface
1323  */
1324 void
1325 airpcap_if_save_driver_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info)
1326 {
1327     if(if_info->keysCollection != NULL)
1328         airpcap_if_set_driver_keys(ad,if_info->keysCollection);
1329 }
1330
1331 /*
1332  * Callback used to free an instance of airpcap_if_info_t
1333  */
1334 static void
1335 free_airpcap_if_cb(gpointer data, gpointer user_data _U_)
1336 {
1337     airpcap_if_info_t *if_info = data;
1338
1339     if (NULL == if_info)
1340         return;
1341
1342     if (if_info->name != NULL)
1343         g_free(if_info->name);
1344
1345     if (if_info->description != NULL)
1346         g_free(if_info->description);
1347
1348     /* XXX - FREE THE WEP KEY LIST HERE!!!*/
1349     if(if_info->keysCollection != NULL)
1350     {
1351         g_free(if_info->keysCollection);
1352         if_info->keysCollection = NULL;
1353     }
1354
1355     if(if_info->ip_addr != NULL)
1356         g_slist_free(if_info->ip_addr);
1357
1358     g_free(if_info);
1359 }
1360
1361 /*
1362  * Function used to free the airpcap interface list
1363  */
1364 void
1365 free_airpcap_interface_list(GList *if_list)
1366 {
1367     g_list_foreach(if_list, free_airpcap_if_cb, NULL);
1368     g_list_free(if_list);
1369     if_list = NULL;
1370 }
1371
1372 /*
1373  * This function will use the airpcap.dll to find all the airpcap devices.
1374  * Will return null if no device is found.
1375  */
1376 GList*
1377 get_airpcap_interface_list(int *err, char **err_str)
1378 {
1379     GList  *il = NULL;
1380     airpcap_if_info_t *if_info;
1381     int n_adapts;
1382     AirpcapDeviceDescription *devsList, *adListEntry;
1383     char errbuf[AIRPCAP_ERRBUF_SIZE];
1384
1385     *err = 0;
1386
1387     if (!AirpcapLoaded)
1388     {
1389                 *err = AIRPCAP_NOT_LOADED;
1390                 return il;
1391     }
1392
1393     if (!g_PAirpcapGetDeviceList(&devsList, errbuf))
1394     {
1395                 /* No interfaces, return il = NULL; */
1396                 *err = CANT_GET_AIRPCAP_INTERFACE_LIST;
1397                 if (err_str != NULL)
1398                         *err_str = cant_get_airpcap_if_list_error_message(errbuf);
1399                 return il;
1400     }
1401
1402     /*
1403      * Count the adapters
1404      */
1405     adListEntry = devsList;
1406     n_adapts = 0;
1407     while(adListEntry)
1408     {
1409         n_adapts++;
1410         adListEntry = adListEntry->next;
1411     }
1412
1413     if(n_adapts == 0)
1414     {
1415                 /* No interfaces, return il= NULL */
1416                 g_PAirpcapFreeDeviceList(devsList);
1417                 *err = NO_AIRPCAP_INTERFACES_FOUND;
1418                 if (err_str != NULL)
1419                         *err_str = NULL;
1420                 return il;
1421     }
1422
1423     /*
1424      * Insert the adapters in our list
1425      */
1426     adListEntry = devsList;
1427     while(adListEntry)
1428     {
1429                 if_info = airpcap_if_info_new(adListEntry->Name, adListEntry->Description);
1430                 if (if_info != NULL){
1431                         il = g_list_append(il, if_info);
1432                 }
1433
1434                 adListEntry = adListEntry->next;
1435     }
1436
1437     g_PAirpcapFreeDeviceList(devsList);
1438
1439     return il;
1440 }
1441
1442 /*
1443  * Used to retrieve the interface given the name
1444  * (the name is used in AirpcapOpen)
1445  */
1446 airpcap_if_info_t* get_airpcap_if_from_name(GList* if_list, const gchar* name)
1447 {
1448         GList* curr;
1449         airpcap_if_info_t* if_info;
1450
1451         for (curr = g_list_first(if_list); curr; curr = g_list_next(curr)) {
1452                 if_info = (airpcap_if_info_t *)curr->data;
1453                 if (if_info && (g_ascii_strcasecmp(if_info->name, name) == 0)) {
1454                         return (if_info);
1455                 }
1456         }
1457         return (NULL);
1458 }
1459
1460 /*
1461  * Returns the ASCII string of a key given the key bytes
1462  */
1463 gchar*
1464 airpcap_get_key_string(AirpcapKey key)
1465 {
1466     unsigned int j = 0;
1467     gchar *dst,*src;
1468
1469     dst = NULL;
1470     src = NULL;
1471
1472     if(key.KeyType == AIRPDCAP_KEY_TYPE_WEP)
1473     {
1474         if(key.KeyLen != 0)
1475         {
1476             /* Allocate the string used to store the ASCII representation of the WEP key */
1477             dst = (gchar*)g_malloc(sizeof(gchar)*WEP_KEY_MAX_CHAR_SIZE + 1);
1478             /* Make sure that the first char is '\0' in order to make g_strlcat() work */
1479             dst[0]='\0';
1480
1481             for(j = 0; j < key.KeyLen; j++)
1482             {
1483                 src = g_strdup_printf("%.2x", key.KeyData[j]);
1484                 /*
1485                  * XXX - use g_strconcat() or GStrings instead ???
1486                  */
1487                 g_strlcat(dst, src, WEP_KEY_MAX_CHAR_SIZE+1);
1488             }
1489             g_free(src);
1490         }
1491     }
1492     else if(key.KeyType == AIRPDCAP_KEY_TYPE_WPA_PWD)
1493     {
1494         /* XXX - Add code here */
1495     }
1496     else if(key.KeyType == AIRPDCAP_KEY_TYPE_WPA_PMK)
1497     {
1498         /* XXX - Add code here */
1499     }
1500     else
1501     {
1502         /* XXX - Add code here */
1503     }
1504
1505     return dst;
1506 }
1507
1508 /*
1509  * Clear keys and decryption status for the specified interface
1510  */
1511 void
1512 airpcap_if_clear_decryption_settings(airpcap_if_info_t* info_if)
1513 {
1514     if(info_if != NULL)
1515     {
1516         if(info_if->keysCollection != NULL)
1517         {
1518             g_free(info_if->keysCollection);
1519             info_if->keysCollection = NULL;
1520         }
1521
1522         info_if->keysCollectionSize = 0;
1523
1524         info_if->DecryptionOn = FALSE;
1525         info_if->saved = FALSE;
1526     }
1527 }
1528
1529 /*
1530  * Used to retrieve the two chars string from interface
1531  */
1532 gchar*
1533 airpcap_get_if_string_number(airpcap_if_info_t* if_info)
1534 {
1535     gchar* number;
1536     guint n;
1537     int a;
1538
1539     a = sscanf(if_info->name,AIRPCAP_DEVICE_NUMBER_EXTRACT_STRING,&n);
1540
1541     /* If sscanf() returned 1, it means that has read a number, so interface is not "Any"
1542      * Otherwise, check if it is the "Any" adapter...
1543      */
1544     if(a == 0)
1545     {
1546         if(g_ascii_strcasecmp(if_info->name,AIRPCAP_DEVICE_ANY_EXTRACT_STRING)!=0)
1547             number = g_strdup_printf("??");
1548         else
1549             number = g_strdup_printf(AIRPCAP_CHANNEL_ANY_NAME);
1550     }
1551     else
1552     {
1553         number = g_strdup_printf("%.2u",n);
1554     }
1555
1556     return number;
1557 }
1558
1559 /*
1560  * Used to retrieve the two chars string from interface
1561  */
1562 gchar*
1563 airpcap_get_if_string_number_from_description(gchar* description)
1564 {
1565     gchar* number;
1566     gchar* pointer;
1567
1568     number = (gchar*)g_malloc(sizeof(gchar)*3);
1569
1570     pointer = g_strrstr(description,"#\0");
1571
1572     number[0] = *(pointer+1);
1573     number[1] = *(pointer+2);
1574     number[2] = '\0';
1575
1576     return number;
1577 }
1578
1579 /*
1580  * Returns the default airpcap interface of a list, NULL if list is empty
1581  */
1582 airpcap_if_info_t*
1583 airpcap_get_default_if(GList* airpcap_if_list)
1584 {
1585     gchar* s;
1586     airpcap_if_info_t* if_info = NULL;
1587
1588     if(prefs.capture_device != NULL)
1589     {
1590         s = g_strdup(get_if_name(prefs.capture_device));
1591         if_info = get_airpcap_if_from_name(airpcap_if_list,g_strdup(get_if_name(prefs.capture_device)));
1592         g_free(s);
1593     }
1594     return if_info;
1595 }
1596
1597 /*
1598  * Load the configuration for the specified interface
1599  */
1600 void
1601 airpcap_load_selected_if_configuration(airpcap_if_info_t* if_info)
1602 {
1603     gchar ebuf[AIRPCAP_ERRBUF_SIZE];
1604     PAirpcapHandle ad;
1605
1606     if(if_info != NULL)
1607     {
1608         ad = airpcap_if_open(if_info->name, ebuf);
1609
1610         if(ad)
1611         {
1612             /* Stop blinking (if it was blinking!)*/
1613             if(if_info->blinking)
1614             {
1615                 /* Turn on the light (if it was off) */
1616                 if(!(if_info->led)) airpcap_if_turn_led_on(ad, 0);
1617             }
1618
1619             /* Apply settings... */
1620             airpcap_if_get_device_channel_ex(ad,&(if_info->channelInfo));
1621             airpcap_if_get_fcs_validation(ad,&(if_info->CrcValidationOn));
1622             airpcap_if_get_fcs_presence(ad,&(if_info->IsFcsPresent));
1623             airpcap_if_get_link_type(ad,&(if_info->linkType));
1624             airpcap_if_get_decryption_state(ad, &(if_info->DecryptionOn));
1625             /* get the keys, if everything is ok, close the adapter */
1626             if(airpcap_if_load_keys(ad,if_info))
1627                 airpcap_if_close(ad);
1628
1629             if_info->saved = TRUE;
1630         }
1631         else
1632         {
1633             simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, " Error in opening adapter for %s",if_info->description);
1634         }
1635     }
1636 }
1637
1638 /*
1639  * Save the configuration for the specified interface
1640  */
1641 void
1642 airpcap_save_selected_if_configuration(airpcap_if_info_t* if_info)
1643 {
1644     gchar ebuf[AIRPCAP_ERRBUF_SIZE];
1645     PAirpcapHandle ad;
1646
1647     if(if_info != NULL)
1648     {
1649         ad = airpcap_if_open(if_info->name, ebuf);
1650
1651         if(ad)
1652         {
1653             /* Stop blinking (if it was blinking!)*/
1654             if(if_info->blinking)
1655             {
1656                 /* Turn on the light (if it was off) */
1657                 if(!(if_info->led)) airpcap_if_turn_led_on(ad, 0);
1658             }
1659
1660             /* Apply settings... */
1661             airpcap_if_set_device_channel_ex(ad,if_info->channelInfo);
1662             airpcap_if_set_fcs_validation(ad,if_info->CrcValidationOn);
1663             airpcap_if_set_fcs_presence(ad,if_info->IsFcsPresent);
1664             airpcap_if_set_link_type(ad,if_info->linkType);
1665             airpcap_if_set_decryption_state(ad, if_info->DecryptionOn);
1666             airpcap_if_save_keys(ad,if_info);
1667
1668             /* ... and save them */
1669             if(!airpcap_if_store_cur_config_as_adapter_default(ad))
1670             {
1671                 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.");
1672                 if_info->saved = FALSE;
1673                 airpcap_if_close(ad);
1674                 return;
1675             }
1676
1677             if_info->saved = TRUE;
1678             airpcap_if_close(ad);
1679         }
1680         else
1681         {
1682             simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, " Error in opening adapter for %s",if_info->description);
1683         }
1684     }
1685 }
1686
1687 /*
1688  * Save the configuration for the specified interface
1689  */
1690 void
1691 airpcap_save_driver_if_configuration(airpcap_if_info_t* fake_if_info)
1692 {
1693     gchar ebuf[AIRPCAP_ERRBUF_SIZE];
1694     PAirpcapHandle ad;
1695
1696     if(fake_if_info != NULL)
1697     {
1698         ad = airpcap_if_open(fake_if_info->name, ebuf);
1699
1700         if(ad)
1701         {
1702             /* Apply decryption settings... */
1703             airpcap_if_set_driver_decryption_state(ad, fake_if_info->DecryptionOn);
1704             airpcap_if_save_driver_keys(ad,fake_if_info);
1705             airpcap_if_close(ad);
1706         }
1707         else
1708         {
1709             simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, " Error in opening adapter for %s",fake_if_info->description);
1710         }
1711     }
1712
1713     return;
1714 }
1715
1716 /*
1717  * DECRYPTION KEYS FUNCTIONS
1718  */
1719 /*
1720  * This function is used for DEBUG POURPOSES ONLY!!!
1721  */
1722 void
1723 print_key_list(GList* key_list)
1724 {
1725     gint n,i;
1726     decryption_key_t* tmp;
1727
1728     if(key_list == NULL)
1729     {
1730         g_print("\n\n******* KEY LIST NULL *******\n\n");
1731         return;
1732     }
1733
1734     n = g_list_length(key_list);
1735
1736     g_print("\n\n********* KEY LIST **********\n\n");
1737
1738     g_print("NUMBER OF KEYS IN LIST : %d\n\n",n);
1739
1740     for(i =0; i < n; i++)
1741     {
1742         g_print("[%d] :\n",i+1);
1743         tmp = (decryption_key_t*)(g_list_nth_data(key_list,i));
1744         g_print("KEY : %s\n",tmp->key->str);
1745
1746         g_print("BITS: %d\n",tmp->bits);
1747
1748         if(tmp->type == AIRPDCAP_KEY_TYPE_WEP)
1749             g_print("TYPE: %s\n",AIRPCAP_WEP_KEY_STRING);
1750         else if(tmp->type == AIRPDCAP_KEY_TYPE_WPA_PWD)
1751             g_print("TYPE: %s\n",AIRPCAP_WPA_PWD_KEY_STRING);
1752         else if(tmp->type == AIRPDCAP_KEY_TYPE_WPA_PMK)
1753             g_print("TYPE: %s\n",AIRPCAP_WPA_BIN_KEY_STRING);
1754         else
1755             g_print("TYPE: %s\n","???");
1756
1757         g_print("SSID: %s\n",(tmp->ssid != NULL) ?
1758                 format_text((guchar *)tmp->ssid->data, tmp->ssid->len) : "---");
1759         g_print("\n");
1760     }
1761
1762     g_print("\n*****************************\n\n");
1763 }
1764
1765 /*
1766  * Retrieves a GList of decryption_key_t structures containing infos about the
1767  * keys for the given adapter... returns NULL if no keys are found.
1768  */
1769 GList*
1770 get_airpcap_device_keys(airpcap_if_info_t* info_if)
1771 {
1772     /* tmp vars */
1773     char* tmp_key = NULL;
1774     guint i,keys_in_list = 0;
1775
1776     /* real vars*/
1777     decryption_key_t *new_key  = NULL;
1778     GList            *key_list = NULL;
1779
1780     /* Number of keys in key list */
1781     if(info_if->keysCollectionSize != 0)
1782         keys_in_list = (guint)(info_if->keysCollectionSize -  sizeof(AirpcapKeysCollection))/sizeof(AirpcapKey);
1783     else
1784         keys_in_list = 0;
1785
1786     for(i=0; i<keys_in_list; i++)
1787     {
1788         /* Different things to do depending on the key type  */
1789         if(info_if->keysCollection->Keys[i].KeyType == AIRPDCAP_KEY_TYPE_WEP)
1790         {
1791             /* allocate memory for the new key item */
1792             new_key = (decryption_key_t*)g_malloc(sizeof(decryption_key_t));
1793
1794             /* fill the fields */
1795             /* KEY */
1796             tmp_key = airpcap_get_key_string(info_if->keysCollection->Keys[i]);
1797             new_key->key = g_string_new(tmp_key);
1798             g_free(tmp_key);
1799
1800             /* BITS */
1801             new_key->bits = (guint) new_key->key->len *4; /* every char is 4 bits in WEP keys (it is an hexadecimal number) */
1802
1803             /* SSID not used in WEP keys */
1804             new_key->ssid = NULL;
1805
1806             /* TYPE (WEP in this case) */
1807             new_key->type = info_if->keysCollection->Keys[i].KeyType;
1808
1809             /* Append the new element in the list */
1810             key_list = g_list_append(key_list,(gpointer)new_key);
1811         }
1812         else if(info_if->keysCollection->Keys[i].KeyType == AIRPDCAP_KEY_TYPE_WPA_PWD)
1813         {
1814             /* XXX - Not supported yet */
1815         }
1816         else if(info_if->keysCollection->Keys[i].KeyType == AIRPDCAP_KEY_TYPE_WPA_PMK)
1817         {
1818             /* XXX - Not supported yet */
1819         }
1820     }
1821
1822     return key_list;
1823 }
1824
1825 /*
1826  * Retrieves a GList of decryption_key_t structures containing infos about the
1827  * keys for the global AirPcap driver... returns NULL if no keys are found.
1828  */
1829 GList*
1830 get_airpcap_driver_keys(void)
1831 {
1832     /* tmp vars */
1833     char* tmp_key = NULL;
1834     guint i,keys_in_list = 0;
1835
1836     /* real vars*/
1837     decryption_key_t *new_key  = NULL;
1838     GList            *key_list = NULL;
1839
1840     /*
1841      * To read the drivers general settings we need to create and use one airpcap adapter...
1842      * The only way to do that is to instantiate a fake adapter, and then close it and delete it.
1843      */
1844     airpcap_if_info_t* fake_info_if = NULL;
1845
1846     /* Create the fake_info_if from the first adapter of the list */
1847     fake_info_if = airpcap_driver_fake_if_info_new();
1848
1849     if(fake_info_if == NULL)
1850         return NULL;
1851
1852     /* Number of keys in key list */
1853     if(fake_info_if->keysCollectionSize != 0)
1854         keys_in_list = (guint)(fake_info_if->keysCollectionSize -  sizeof(AirpcapKeysCollection))/sizeof(AirpcapKey);
1855     else
1856         keys_in_list = 0;
1857
1858     for(i=0; i<keys_in_list; i++)
1859     {
1860         /* Different things to do depending on the key type  */
1861         if(fake_info_if->keysCollection->Keys[i].KeyType == AIRPDCAP_KEY_TYPE_WEP)
1862         {
1863             /* allocate memory for the new key item */
1864             new_key = (decryption_key_t*)g_malloc(sizeof(decryption_key_t));
1865
1866             /* fill the fields */
1867             /* KEY */
1868             tmp_key = airpcap_get_key_string(fake_info_if->keysCollection->Keys[i]);
1869             new_key->key = g_string_new(tmp_key);
1870             if(tmp_key != NULL) g_free(tmp_key);
1871
1872             /* BITS */
1873             new_key->bits = (guint) new_key->key->len *4; /* every char is 4 bits in WEP keys (it is an hexadecimal number) */
1874
1875             /* SSID not used in WEP keys */
1876             new_key->ssid = NULL;
1877
1878             /* TYPE (WEP in this case) */
1879             new_key->type = fake_info_if->keysCollection->Keys[i].KeyType;
1880
1881             /* Append the new element in the list */
1882             key_list = g_list_append(key_list,(gpointer)new_key);
1883         }
1884         else if(fake_info_if->keysCollection->Keys[i].KeyType == AIRPDCAP_KEY_TYPE_WPA_PWD)
1885         {
1886             /* XXX - Not supported yet */
1887         }
1888         else if(fake_info_if->keysCollection->Keys[i].KeyType == AIRPDCAP_KEY_TYPE_WPA_PMK)
1889         {
1890             /* XXX - Not supported yet */
1891         }
1892     }
1893
1894     airpcap_if_info_free(fake_info_if);
1895
1896     return key_list;
1897 }
1898
1899 /*
1900  * Returns the list of the decryption keys specified for wireshark, NULL if
1901  * no key is found
1902  */
1903 GList*
1904 get_wireshark_keys(void)
1905 {
1906     keys_cb_data_t* wep_user_data = NULL;
1907
1908     GList* final_list = NULL;
1909     GList* wep_final_list = NULL;
1910
1911     /* Retrieve the wlan preferences */
1912     wlan_prefs = prefs_find_module("wlan");
1913
1914     /* Allocate a structure used to keep infos  between the callbacks */
1915     wep_user_data = (keys_cb_data_t*)g_malloc(sizeof(keys_cb_data_t));
1916
1917     /* Fill the structure */
1918     wep_user_data->list = NULL;
1919     wep_user_data->current_index = 0;
1920     wep_user_data->number_of_keys= 0; /* Still unknown */
1921
1922     /* Run the callback on each 802.11 preference */
1923     /* XXX - Right now, only WEP keys will be loaded */
1924     prefs_pref_foreach(wlan_prefs, get_wep_key, (gpointer)wep_user_data);
1925
1926     /* Copy the list field in the user data structure pointer into the final_list */
1927     wep_final_list = wep_user_data->list;
1928
1929     /* XXX - Merge the three lists!!!!! */
1930     final_list = wep_final_list;
1931
1932     /* free the wep_user_data structure */
1933     g_free(wep_user_data);
1934
1935     return final_list;
1936 }
1937
1938 /*
1939  * Merges two lists of keys and return a newly created GList. If a key is
1940  * found multiple times, it will just appear once!
1941  * list1 and list 2 pointer will have to be freed manually if needed!!!
1942  * If the total number of keys exceeeds the maximum number allowed,
1943  * exceeding keys will be discarded...
1944  */
1945 GList*
1946 merge_key_list(GList* list1, GList* list2)
1947 {
1948     guint n1=0,n2=0;
1949     guint i;
1950     decryption_key_t *dk1=NULL,
1951                       *dk2=NULL,
1952                       *new_dk=NULL;
1953
1954     GList* merged_list = NULL;
1955
1956     if( (list1 == NULL) && (list2 == NULL) )
1957         return NULL;
1958
1959     if(list1 == NULL)
1960     {
1961         n2 = g_list_length(list2);
1962
1963         for(i=0;i<n2;i++)
1964         {
1965             new_dk = (decryption_key_t*)g_malloc(sizeof(decryption_key_t));
1966             dk2 = (decryption_key_t *)g_list_nth_data(list2,i);
1967
1968             new_dk->bits = dk2->bits;
1969             new_dk->type = dk2->type;
1970             new_dk->key  = g_string_new(dk2->key->str);
1971             new_dk->ssid = byte_array_dup(dk2->ssid);
1972
1973             /* Check the total length of the merged list */
1974             if(g_list_length(merged_list) < MAX_ENCRYPTION_KEYS)
1975                 merged_list = g_list_append(merged_list,(gpointer)new_dk);
1976         }
1977     }
1978     else if(list2 == NULL)
1979     {
1980         n1 = g_list_length(list1);
1981
1982         for(i=0;i<n1;i++)
1983         {
1984             new_dk = (decryption_key_t*)g_malloc(sizeof(decryption_key_t));
1985             dk1 = (decryption_key_t*)g_list_nth_data(list1,i);
1986
1987             new_dk->bits = dk1->bits;
1988             new_dk->type = dk1->type;
1989             new_dk->key  = g_string_new(dk1->key->str);
1990             new_dk->ssid = byte_array_dup(dk1->ssid);
1991
1992             /* Check the total length of the merged list */
1993             if(g_list_length(merged_list) < MAX_ENCRYPTION_KEYS)
1994                 merged_list = g_list_append(merged_list,(gpointer)new_dk);
1995         }
1996     }
1997     else
1998     {
1999         n1 = g_list_length(list1);
2000         n2 = g_list_length(list2);
2001
2002         /* Copy the whole list1 into merged_list */
2003         for(i=0;i<n1;i++)
2004         {
2005             new_dk = (decryption_key_t*)g_malloc(sizeof(decryption_key_t));
2006             dk1 = (decryption_key_t *)g_list_nth_data(list1,i);
2007
2008             new_dk->bits = dk1->bits;
2009             new_dk->type = dk1->type;
2010             new_dk->key  = g_string_new(dk1->key->str);
2011             new_dk->ssid = byte_array_dup(dk1->ssid);
2012
2013             /* Check the total length of the merged list */
2014             if(g_list_length(merged_list) < MAX_ENCRYPTION_KEYS)
2015                 merged_list = g_list_append(merged_list,(gpointer)new_dk);
2016         }
2017
2018         /* Look for keys that are present in list2 but aren't in list1 yet...
2019          * Add them to merged_list
2020          */
2021         for(i=0;i<n2;i++)
2022         {
2023             dk2 = (decryption_key_t *)g_list_nth_data(list2,i);
2024
2025             if(!key_is_in_list(dk2,merged_list))
2026             {
2027                 new_dk = (decryption_key_t*)g_malloc(sizeof(decryption_key_t));
2028
2029                 new_dk->bits = dk2->bits;
2030                 new_dk->type = dk2->type;
2031                 new_dk->key  = g_string_new(dk2->key->str);
2032                 new_dk->ssid = byte_array_dup(dk2->ssid);
2033
2034                 /* Check the total length of the merged list */
2035                 if(g_list_length(merged_list) < MAX_ENCRYPTION_KEYS)
2036                     merged_list = g_list_append(merged_list,(gpointer)new_dk);
2037             }
2038         }
2039     }
2040
2041     return merged_list;
2042 }
2043
2044 /*
2045  * Use this function to free a key list.
2046  */
2047 void
2048 free_key_list(GList *list)
2049 {
2050     guint i,n;
2051     decryption_key_t *curr_key;
2052
2053     if(list == NULL)
2054         return;
2055
2056     n = g_list_length(list);
2057
2058     for(i = 0; i < n; i++)
2059     {
2060         curr_key = (decryption_key_t*)g_list_nth_data(list,i);
2061
2062         /* Free all the strings */
2063         if(curr_key->key != NULL)
2064             g_string_free(curr_key->key, TRUE);
2065
2066         if(curr_key->ssid != NULL)
2067         g_byte_array_free(curr_key->ssid, TRUE);
2068
2069         /* free the decryption_key_t structure*/
2070         g_free(curr_key);
2071         curr_key = NULL;
2072     }
2073
2074     /* Free the list */
2075     g_list_free(list);
2076
2077     return;
2078 }
2079
2080
2081 /*
2082  * If the given key is contained in the list, returns TRUE.
2083  * Returns FALSE otherwise.
2084  */
2085 gboolean
2086 key_is_in_list(decryption_key_t *dk,GList *list)
2087 {
2088     guint i,n;
2089     decryption_key_t* curr_key = NULL;
2090     gboolean found = FALSE;
2091
2092     if( (list == NULL) || (dk == NULL) )
2093         return FALSE;
2094
2095     n = g_list_length(list);
2096
2097     if(n < 1)
2098         return FALSE;
2099
2100     for(i = 0; i < n; i++)
2101     {
2102         curr_key = (decryption_key_t*)g_list_nth_data(list,i);
2103         if(keys_are_equals(dk,curr_key))
2104             found = TRUE;
2105     }
2106
2107     return found;
2108 }
2109
2110 /*
2111  * Returns TRUE if keys are equals, FALSE otherwise
2112  */
2113 gboolean
2114 keys_are_equals(decryption_key_t *k1,decryption_key_t *k2)
2115 {
2116
2117     if((k1==NULL) || (k2==NULL))
2118         return FALSE;
2119
2120     /* XXX - Remove this check when we will have the WPA/WPA2 decryption in the Driver! */
2121     /** if( (k1->type == AIRPDCAP_KEY_TYPE_WPA_PWD) || (k2->type == AIRPDCAP_KEY_TYPE_WPA_PWD) || (k1->type == AIRPDCAP_KEY_TYPE_WPA_PMK) || (k2->type == AIRPDCAP_KEY_TYPE_WPA_PMK) ) **/
2122     /**         return TRUE;  **/
2123
2124     if( g_string_equal(k1->key,k2->key) &&
2125         (k1->bits == k2->bits) && /* If the previous is TRUE, this must be TRUE as well */
2126         k1->type == k2->type)
2127     {
2128         /* Check the ssid... if the key type is WEP, the two fields should be NULL */
2129         if((k1->ssid == NULL) && (k2->ssid == NULL))
2130             return TRUE;
2131
2132         /* If they are not null, they must share the same ssid */
2133         return byte_array_equal(k1->ssid,k2->ssid);
2134     }
2135
2136     /* Some field is not equal ... */
2137     return FALSE;
2138 }
2139
2140 /*
2141  * Tests if two collection of keys are equal or not, to be considered equals, they have to
2142  * contain the same keys in the SAME ORDER! (If both lists are NULL, which means empty will
2143  * return TRUE)
2144  */
2145 gboolean
2146 key_lists_are_equal(GList* list1, GList* list2)
2147 {
2148     guint n1=0,n2=0;
2149     /* XXX - Remove */
2150     guint wep_n1=0,wep_n2=0;
2151     GList *wep_list1=NULL;
2152     GList *wep_list2=NULL;
2153     /* XXX - END*/
2154     guint i/*,j*/;
2155     decryption_key_t *dk1=NULL,*dk2=NULL;
2156
2157     n1 = g_list_length(list1);
2158     n2 = g_list_length(list2);
2159
2160     /*
2161      * XXX - START : Retrieve the aublists of WEP keys!!! This is needed only 'till Driver WPA decryption
2162      * is implemented.
2163      */
2164     for(i=0;i<n1;i++)
2165     {
2166         dk1=(decryption_key_t*)g_list_nth_data(list1,i);
2167         if(dk1->type == AIRPDCAP_KEY_TYPE_WEP)
2168         {
2169             wep_list1 = g_list_append(wep_list1,(gpointer)dk1);
2170             wep_n1++;
2171         }
2172     }
2173     for(i=0;i<n2;i++)
2174     {
2175         dk2=(decryption_key_t*)g_list_nth_data(list2,i);
2176         if(dk2->type == AIRPDCAP_KEY_TYPE_WEP)
2177         {
2178             wep_list2 = g_list_append(wep_list2,(gpointer)dk2);
2179             wep_n2++;
2180         }
2181     }
2182
2183     /*
2184      * XXX - END : Remove from START to END when the WPA/WPA2 decryption will be implemented in
2185      * the Driver
2186      */
2187
2188     /*
2189      * Commented, because in the new AirPcap version all the keys will be saved
2190      * into the driver, and all the keys for every specific adapter will be
2191      * removed. This means that this check will always fail... and the user will
2192      * always be asked what to do... and it doesn't make much sense.
2193      */
2194     /* if(n1 != n2) return FALSE; */
2195     if(wep_n1 != wep_n2) return FALSE;
2196
2197     n2 = wep_n2;
2198
2199     /*for(i=0;i<n1;i++)
2200     {
2201     dk1=(decryption_key_t*)g_list_nth_data(list1,i);
2202     dk2=(decryption_key_t*)g_list_nth_data(list2,i);
2203
2204     if(!g_string_equal(dk1->key,dk2->key)) return FALSE;
2205     }*/
2206     for(i=0;i<n2;i++)
2207     {
2208         dk2=(decryption_key_t*)g_list_nth_data(wep_list2,i);
2209         if(!key_is_in_list(dk2,wep_list1)) return FALSE;
2210     }
2211
2212     return TRUE;
2213 }
2214
2215 static guint
2216 test_if_on(pref_t *pref, gpointer ud)
2217 {
2218     gboolean *is_on;
2219     gboolean number;
2220
2221     /* Retrieve user data info */
2222     is_on = (gboolean*)ud;
2223
2224
2225     if (g_ascii_strncasecmp(pref->name, "enable_decryption", 17) == 0 && pref->type == PREF_BOOL)
2226     {
2227         number = *pref->varp.boolp;
2228
2229         if(number) *is_on = TRUE;
2230         else *is_on = FALSE;
2231
2232         return 1;
2233     }
2234     return 0;
2235 }
2236
2237 /*
2238  * Returns TRUE if the Wireshark decryption is active, false otherwise
2239  * XXX - Should we just add a routine to packet-ieee80211.c to grab this directly?
2240  */
2241 gboolean
2242 wireshark_decryption_on(void)
2243 {
2244     gboolean is_on;
2245
2246     /* Retrieve the wlan preferences */
2247     wlan_prefs = prefs_find_module("wlan");
2248
2249     /* Run the callback on each 802.11 preference */
2250     prefs_pref_foreach(wlan_prefs, test_if_on, (gpointer)&is_on);
2251
2252     return is_on;
2253 }
2254
2255 /*
2256  * Returns TRUE if the AirPcap decryption for the current adapter is active, false otherwise
2257  */
2258 gboolean
2259 airpcap_decryption_on(void)
2260 {
2261     gboolean is_on = FALSE;
2262
2263     airpcap_if_info_t* fake_if_info = NULL;
2264
2265     fake_if_info = airpcap_driver_fake_if_info_new();
2266
2267     if(fake_if_info != NULL)
2268     {
2269         if(fake_if_info->DecryptionOn == AIRPCAP_DECRYPTION_ON)
2270             is_on = TRUE;
2271         else if(fake_if_info->DecryptionOn == AIRPCAP_DECRYPTION_OFF)
2272             is_on = FALSE;
2273     }
2274
2275     airpcap_if_info_free(fake_if_info);
2276
2277     return is_on;
2278 }
2279
2280 /*
2281  * Free an instance of airpcap_if_info_t
2282  */
2283 void
2284 airpcap_if_info_free(airpcap_if_info_t *if_info)
2285 {
2286     if(if_info != NULL)
2287     {
2288         if (if_info->name != NULL)
2289             g_free(if_info->name);
2290
2291         if (if_info->description != NULL)
2292             g_free(if_info->description);
2293
2294         if(if_info->keysCollection != NULL)
2295         {
2296             g_free(if_info->keysCollection);
2297             if_info->keysCollection = NULL;
2298         }
2299
2300         if(if_info->ip_addr != NULL)
2301         {
2302             g_slist_free(if_info->ip_addr);
2303             if_info->ip_addr = NULL;
2304         }
2305
2306         if(if_info != NULL)
2307         {
2308             g_free(if_info);
2309             if_info = NULL;
2310         }
2311     }
2312 }
2313
2314 static guint
2315 set_on_off(pref_t *pref, gpointer ud)
2316 {
2317     gboolean *is_on;
2318
2319     /* Retrieve user data info */
2320     is_on = (gboolean*)ud;
2321
2322     if (g_ascii_strncasecmp(pref->name, "enable_decryption", 17) == 0 && pref->type == PREF_BOOL)
2323     {
2324
2325         if(*is_on)
2326             *pref->varp.boolp = TRUE;
2327         else
2328             *pref->varp.boolp = FALSE;
2329
2330         return 1;
2331     }
2332     return 0;
2333 }
2334
2335 /*
2336  * Enables decryption for Wireshark if on_off is TRUE, disables it otherwise.
2337  */
2338 void
2339 set_wireshark_decryption(gboolean on_off)
2340 {
2341     gboolean is_on;
2342
2343     is_on = on_off;
2344
2345     /* Retrieve the wlan preferences */
2346     wlan_prefs = prefs_find_module("wlan");
2347
2348     /* Run the callback on each 802.11 preference */
2349     prefs_pref_foreach(wlan_prefs, set_on_off, (gpointer)&is_on);
2350
2351     /*
2352      * Signal that we've changed things, and run the 802.11 dissector's
2353      * callback
2354      */
2355     wlan_prefs->prefs_changed = TRUE;
2356
2357     prefs_apply(wlan_prefs);
2358 }
2359
2360 /*
2361  * Enables decryption for all the adapters if on_off is TRUE, disables it otherwise.
2362  */
2363 gboolean
2364 set_airpcap_decryption(gboolean on_off)
2365 {
2366     /* We need to directly access the .dll functions here... */
2367     gchar ebuf[AIRPCAP_ERRBUF_SIZE];
2368     PAirpcapHandle ad,ad_driver;
2369
2370     gboolean success = TRUE;
2371
2372     gint n = 0;
2373     gint i = 0;
2374     airpcap_if_info_t* curr_if = NULL;
2375     airpcap_if_info_t* fake_if_info = NULL;
2376
2377     fake_if_info = airpcap_driver_fake_if_info_new();
2378
2379     if(fake_if_info == NULL)
2380         /* We apparently don't have any adapters installed.
2381          * This isn't a failure, so return TRUE
2382          */
2383         return TRUE;
2384
2385         /* Set the driver decryption */
2386         ad_driver = airpcap_if_open(fake_if_info->name, ebuf);
2387         if(ad_driver)
2388         {
2389             if(on_off)
2390                 airpcap_if_set_driver_decryption_state(ad_driver,AIRPCAP_DECRYPTION_ON);
2391             else
2392                 airpcap_if_set_driver_decryption_state(ad_driver,AIRPCAP_DECRYPTION_OFF);
2393
2394             airpcap_if_close(ad_driver);
2395         }
2396
2397         airpcap_if_info_free(fake_if_info);
2398
2399         n = g_list_length(airpcap_if_list);
2400
2401         /* Set to FALSE the decryption for all the adapters */
2402         /* Apply this change to all the adapters !!! */
2403         for(i = 0; i < n; i++)
2404         {
2405             curr_if = (airpcap_if_info_t*)g_list_nth_data(airpcap_if_list,i);
2406
2407             if( curr_if != NULL )
2408             {
2409                 ad = airpcap_if_open(curr_if->name, ebuf);
2410                 if(ad)
2411                 {
2412                     curr_if->DecryptionOn = (gboolean)AIRPCAP_DECRYPTION_OFF;
2413                     airpcap_if_set_decryption_state(ad,curr_if->DecryptionOn);
2414                     /* Save configuration for the curr_if */
2415                     if(!airpcap_if_store_cur_config_as_adapter_default(ad))
2416                     {
2417                         success = FALSE;
2418                     }
2419                     airpcap_if_close(ad);
2420                 }
2421             }
2422         }
2423
2424         return success;
2425 }
2426
2427
2428 /* DYNAMIC LIBRARY LOADER */
2429 /*
2430  *  Used to dynamically load the airpcap library in order link it only when
2431  *  it's present on the system
2432  */
2433 int load_airpcap(void)
2434 {
2435 #ifdef _WIN32
2436     gboolean base_functions = TRUE;
2437     gboolean eleven_n_functions = TRUE;
2438
2439     if((AirpcapLib = ws_load_library("airpcap.dll")) == NULL)
2440     {
2441                 /* Report the error but go on */
2442                 AirpcapVersion = AIRPCAP_DLL_NOT_FOUND;
2443                 return AirpcapVersion;
2444     }
2445     else
2446     {
2447                 if((g_PAirpcapGetLastError = (AirpcapGetLastErrorHandler) GetProcAddress(AirpcapLib, "AirpcapGetLastError")) == NULL) base_functions = FALSE;
2448                 if((g_PAirpcapGetDeviceList = (AirpcapGetDeviceListHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceList")) == NULL) base_functions = FALSE;
2449                 if((g_PAirpcapFreeDeviceList = (AirpcapFreeDeviceListHandler) GetProcAddress(AirpcapLib, "AirpcapFreeDeviceList")) == NULL) base_functions = FALSE;
2450                 if((g_PAirpcapOpen = (AirpcapOpenHandler) GetProcAddress(AirpcapLib, "AirpcapOpen")) == NULL) base_functions = FALSE;
2451                 if((g_PAirpcapClose = (AirpcapCloseHandler) GetProcAddress(AirpcapLib, "AirpcapClose")) == NULL) base_functions = FALSE;
2452                 if((g_PAirpcapGetLinkType = (AirpcapGetLinkTypeHandler) GetProcAddress(AirpcapLib, "AirpcapGetLinkType")) == NULL) base_functions = FALSE;
2453                 if((g_PAirpcapSetLinkType = (AirpcapSetLinkTypeHandler) GetProcAddress(AirpcapLib, "AirpcapSetLinkType")) == NULL) base_functions = FALSE;
2454                 if((g_PAirpcapSetKernelBuffer = (AirpcapSetKernelBufferHandler) GetProcAddress(AirpcapLib, "AirpcapSetKernelBuffer")) == NULL) base_functions = FALSE;
2455                 if((g_PAirpcapSetFilter = (AirpcapSetFilterHandler) GetProcAddress(AirpcapLib, "AirpcapSetFilter")) == NULL) base_functions = FALSE;
2456                 if((g_PAirpcapGetMacAddress = (AirpcapGetMacAddressHandler) GetProcAddress(AirpcapLib, "AirpcapGetMacAddress")) == NULL) base_functions = FALSE;
2457                 if((g_PAirpcapSetMinToCopy = (AirpcapSetMinToCopyHandler) GetProcAddress(AirpcapLib, "AirpcapSetMinToCopy")) == NULL) base_functions = FALSE;
2458                 if((g_PAirpcapGetReadEvent = (AirpcapGetReadEventHandler) GetProcAddress(AirpcapLib, "AirpcapGetReadEvent")) == NULL) base_functions = FALSE;
2459                 if((g_PAirpcapRead = (AirpcapReadHandler) GetProcAddress(AirpcapLib, "AirpcapRead")) == NULL) base_functions = FALSE;
2460                 if((g_PAirpcapGetStats = (AirpcapGetStatsHandler) GetProcAddress(AirpcapLib, "AirpcapGetStats")) == NULL) base_functions = FALSE;
2461                 if((g_PAirpcapTurnLedOn = (AirpcapTurnLedOnHandler) GetProcAddress(AirpcapLib, "AirpcapTurnLedOn")) == NULL) base_functions = FALSE;
2462                 if((g_PAirpcapTurnLedOff = (AirpcapTurnLedOffHandler) GetProcAddress(AirpcapLib, "AirpcapTurnLedOff")) == NULL) base_functions = FALSE;
2463                 if((g_PAirpcapGetDeviceChannel = (AirpcapGetDeviceChannelHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceChannel")) == NULL) base_functions = FALSE;
2464                 if((g_PAirpcapSetDeviceChannel = (AirpcapSetDeviceChannelHandler) GetProcAddress(AirpcapLib, "AirpcapSetDeviceChannel")) == NULL) base_functions = FALSE;
2465                 if((g_PAirpcapGetFcsPresence = (AirpcapGetFcsPresenceHandler) GetProcAddress(AirpcapLib, "AirpcapGetFcsPresence")) == NULL) base_functions = FALSE;
2466                 if((g_PAirpcapSetFcsPresence = (AirpcapSetFcsPresenceHandler) GetProcAddress(AirpcapLib, "AirpcapSetFcsPresence")) == NULL) base_functions = FALSE;
2467                 if((g_PAirpcapGetFcsValidation = (AirpcapGetFcsValidationHandler) GetProcAddress(AirpcapLib, "AirpcapGetFcsValidation")) == NULL) base_functions = FALSE;
2468                 if((g_PAirpcapSetFcsValidation = (AirpcapSetFcsValidationHandler) GetProcAddress(AirpcapLib, "AirpcapSetFcsValidation")) == NULL) base_functions = FALSE;
2469                 if((g_PAirpcapGetDeviceKeys = (AirpcapGetDeviceKeysHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceKeys")) == NULL) base_functions = FALSE;
2470                 if((g_PAirpcapSetDeviceKeys = (AirpcapSetDeviceKeysHandler) GetProcAddress(AirpcapLib, "AirpcapSetDeviceKeys")) == NULL) base_functions = FALSE;
2471                 if((g_PAirpcapGetDecryptionState = (AirpcapGetDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapGetDecryptionState")) == NULL) base_functions = FALSE;
2472                 if((g_PAirpcapSetDecryptionState = (AirpcapSetDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapSetDecryptionState")) == NULL) base_functions = FALSE;
2473                 if((g_PAirpcapStoreCurConfigAsAdapterDefault = (AirpcapStoreCurConfigAsAdapterDefaultHandler) GetProcAddress(AirpcapLib, "AirpcapStoreCurConfigAsAdapterDefault")) == NULL) base_functions = FALSE;
2474                 if((g_PAirpcapGetVersion = (AirpcapGetVersionHandler) GetProcAddress(AirpcapLib, "AirpcapGetVersion")) == NULL) base_functions = FALSE;
2475                 if((g_PAirpcapGetDriverDecryptionState = (AirpcapGetDriverDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapGetDriverDecryptionState")) == NULL) base_functions = FALSE;
2476                 if((g_PAirpcapSetDriverDecryptionState = (AirpcapSetDriverDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapSetDriverDecryptionState")) == NULL) base_functions = FALSE;
2477                 if((g_PAirpcapGetDriverKeys = (AirpcapGetDriverKeysHandler) GetProcAddress(AirpcapLib, "AirpcapGetDriverKeys")) == NULL) base_functions = FALSE;
2478                 if((g_PAirpcapSetDriverKeys = (AirpcapSetDriverKeysHandler) GetProcAddress(AirpcapLib, "AirpcapSetDriverKeys")) == NULL) base_functions = FALSE;
2479
2480                 /* TEST IF AIRPCAP SUPPORTS 11N */
2481                 if((g_PAirpcapSetDeviceChannelEx = (AirpcapSetDeviceChannelExHandler) GetProcAddress(AirpcapLib, "AirpcapSetDeviceChannelEx")) == NULL) eleven_n_functions = FALSE;
2482                 if((g_PAirpcapGetDeviceChannelEx = (AirpcapGetDeviceChannelExHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceChannelEx")) == NULL) eleven_n_functions = FALSE;
2483                 if((g_PAirpcapGetDeviceSupportedChannels = (AirpcapGetDeviceSupportedChannelsHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceSupportedChannels")) == NULL) eleven_n_functions = FALSE;
2484
2485                 if(base_functions && eleven_n_functions){
2486                         AirpcapLoaded = TRUE;
2487                         AirpcapVersion = AIRPCAP_DLL_OK;
2488                 }else if(base_functions){
2489                         AirpcapLoaded = TRUE;
2490                         AirpcapVersion = AIRPCAP_DLL_OLD;
2491                         return AIRPCAP_DLL_OK;
2492                 }else{
2493                         AirpcapLoaded = FALSE;
2494                         AirpcapVersion = AIRPCAP_DLL_ERROR;
2495                 }
2496     }
2497     return AirpcapVersion;
2498 #else /* _WIN32 */
2499     return AIRPCAP_DLL_NOT_FOUND;
2500 #endif /* _WIN32 */
2501 }
2502
2503 /*
2504  * Append the version of AirPcap with which we were compiled to a GString.
2505  */
2506 void
2507 get_compiled_airpcap_version(GString *str)
2508 {
2509     g_string_append(str, "with AirPcap");
2510 }
2511
2512 /*
2513  * Append the version of AirPcap with which we we're running to a GString.
2514  */
2515 void
2516 get_runtime_airpcap_version(GString *str)
2517 {
2518     guint vmaj, vmin, vrev, build;
2519
2520     /* See if the DLL has been loaded successfully.  Bail if it hasn't */
2521     if (AirpcapLoaded == FALSE) {
2522         g_string_append(str, "without AirPcap");
2523         return;
2524     }
2525
2526     g_PAirpcapGetVersion(&vmaj, &vmin, &vrev, &build);
2527     g_string_append_printf(str, "with AirPcap %d.%d.%d build %d", vmaj, vmin,
2528         vrev, build);
2529 }
2530 #endif /* HAVE_AIRPCAP */