diff options
Diffstat (limited to 'capture/airpcap_loader.c')
| -rw-r--r-- | capture/airpcap_loader.c | 1230 |
1 files changed, 1230 insertions, 0 deletions
diff --git a/capture/airpcap_loader.c b/capture/airpcap_loader.c new file mode 100644 index 0000000000..4e83953fdb --- /dev/null +++ b/capture/airpcap_loader.c @@ -0,0 +1,1230 @@ +/* airpcap_loader.c + * + * Giorgio Tino <giorgio.tino@cacetech.com> + * Copyright (c) CACE Technologies, LLC 2006 + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 2000 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" + +#include <glib.h> + +#include <epan/crypt/dot11decrypt_ws.h> +#include <epan/strutil.h> +#include <wsutil/file_util.h> +#include <wsutil/802_11-utils.h> + +#include <capture/airpcap.h> +#include <capture/airpcap_loader.h> + + +/* + * Set to TRUE if the DLL was successfully loaded AND all functions + * are present. + */ +static gboolean AirpcapLoaded = FALSE; + +#ifdef _WIN32 +/* + * We load dynamically the dag library in order link it only when + * it's present on the system + */ +static void * AirpcapLib = NULL; + +static AirpcapGetLastErrorHandler g_PAirpcapGetLastError; +static AirpcapSetKernelBufferHandler g_PAirpcapSetKernelBuffer; +static AirpcapSetFilterHandler g_PAirpcapSetFilter; +static AirpcapGetMacAddressHandler g_PAirpcapGetMacAddress; +static AirpcapSetMinToCopyHandler g_PAirpcapSetMinToCopy; +static AirpcapGetReadEventHandler g_PAirpcapGetReadEvent; +static AirpcapReadHandler g_PAirpcapRead; +static AirpcapGetStatsHandler g_PAirpcapGetStats; +#endif + +static int AirpcapVersion = 3; + +static AirpcapGetDeviceListHandler g_PAirpcapGetDeviceList; +static AirpcapFreeDeviceListHandler g_PAirpcapFreeDeviceList; +static AirpcapOpenHandler g_PAirpcapOpen; +static AirpcapCloseHandler g_PAirpcapClose; +static AirpcapGetLinkTypeHandler g_PAirpcapGetLinkType; +static AirpcapSetLinkTypeHandler g_PAirpcapSetLinkType; +static AirpcapTurnLedOnHandler g_PAirpcapTurnLedOn; +static AirpcapTurnLedOffHandler g_PAirpcapTurnLedOff; +static AirpcapGetDeviceChannelHandler g_PAirpcapGetDeviceChannel; +static AirpcapSetDeviceChannelHandler g_PAirpcapSetDeviceChannel; +static AirpcapGetFcsPresenceHandler g_PAirpcapGetFcsPresence; +static AirpcapSetFcsPresenceHandler g_PAirpcapSetFcsPresence; +static AirpcapGetFcsValidationHandler g_PAirpcapGetFcsValidation; +static AirpcapSetFcsValidationHandler g_PAirpcapSetFcsValidation; +static AirpcapGetDeviceKeysHandler g_PAirpcapGetDeviceKeys; +static AirpcapSetDeviceKeysHandler g_PAirpcapSetDeviceKeys; +static AirpcapGetDriverKeysHandler g_PAirpcapGetDriverKeys; +static AirpcapSetDriverKeysHandler g_PAirpcapSetDriverKeys; +static AirpcapGetDecryptionStateHandler g_PAirpcapGetDecryptionState; +static AirpcapSetDecryptionStateHandler g_PAirpcapSetDecryptionState; +static AirpcapGetDriverDecryptionStateHandler g_PAirpcapGetDriverDecryptionState; +static AirpcapSetDriverDecryptionStateHandler g_PAirpcapSetDriverDecryptionState; +static AirpcapStoreCurConfigAsAdapterDefaultHandler g_PAirpcapStoreCurConfigAsAdapterDefault; +static AirpcapGetVersionHandler g_PAirpcapGetVersion; +static AirpcapSetDeviceChannelExHandler g_PAirpcapSetDeviceChannelEx; +static AirpcapGetDeviceChannelExHandler g_PAirpcapGetDeviceChannelEx; +static AirpcapGetDeviceSupportedChannelsHandler g_PAirpcapGetDeviceSupportedChannels; + +/* Airpcap interface list */ +GList *g_airpcap_if_list = NULL; + +/* Airpcap current selected interface */ +airpcap_if_info_t *airpcap_if_selected = NULL; + +/* Airpcap current active interface */ +airpcap_if_info_t *airpcap_if_active = NULL; + +Dot11Channel *pSupportedChannels; +guint numSupportedChannels; + +static AirpcapChannelInfo LegacyChannels[] = +{ + {2412, 0, {0,0,0}}, + {2417, 0, {0,0,0}}, + {2422, 0, {0,0,0}}, + {2427, 0, {0,0,0}}, + {2432, 0, {0,0,0}}, + {2437, 0, {0,0,0}}, + {2442, 0, {0,0,0}}, + {2447, 0, {0,0,0}}, + {2452, 0, {0,0,0}}, + {2457, 0, {0,0,0}}, + {2462, 0, {0,0,0}}, + {2467, 0, {0,0,0}}, + {2472, 0, {0,0,0}}, + {2484, 0, {0,0,0}}, +}; + +static guint num_legacy_channels = 14; + +/* + * Get an error message string for a CANT_GET_INTERFACE_LIST error from + * "get_airpcap_interface_list()". + */ +static gchar * +cant_get_airpcap_if_list_error_message(const char *err_str) +{ + return g_strdup_printf("Can't get list of Wireless interfaces: %s", err_str); +} + +/* + * Airpcap wrapper, used to store the current settings for the selected adapter + */ +gboolean +airpcap_if_store_cur_config_as_adapter_default(PAirpcapHandle ah) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapStoreCurConfigAsAdapterDefault(ah); +} + +/* + * Airpcap wrapper, used to open an airpcap adapter + */ +PAirpcapHandle +airpcap_if_open(gchar * name, gchar * err) +{ + if (!AirpcapLoaded) return NULL; + if (name == NULL) return NULL; + return g_PAirpcapOpen(name,err); +} + +/* + * Airpcap wrapper, used to close an airpcap adapter + */ +void +airpcap_if_close(PAirpcapHandle handle) +{ + if (!AirpcapLoaded) return; + g_PAirpcapClose(handle); +} + +/* + * Retrieve the state of the Airpcap DLL + */ +int +airpcap_get_dll_state(void) +{ + return AirpcapVersion; +} + +/* + * Airpcap wrapper, used to turn on the led of an airpcap adapter + */ +gboolean +airpcap_if_turn_led_on(PAirpcapHandle AdapterHandle, guint LedNumber) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapTurnLedOn(AdapterHandle,LedNumber); +} + +/* + * Airpcap wrapper, used to turn off the led of an airpcap adapter + */ +gboolean +airpcap_if_turn_led_off(PAirpcapHandle AdapterHandle, guint LedNumber) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapTurnLedOff(AdapterHandle,LedNumber); +} + +/* + * Airpcap wrapper, used to get the channel of an airpcap adapter + */ +gboolean +airpcap_if_get_device_channel(PAirpcapHandle ah, guint * ch) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapGetDeviceChannel(ah,ch); +} + +/* + * Airpcap wrapper, used to get the supported channels of an airpcap adapter + */ +gboolean +airpcap_if_get_device_supported_channels(PAirpcapHandle ah, AirpcapChannelInfo **cInfo, guint * nInfo) +{ + if (!AirpcapLoaded) return FALSE; + if (airpcap_get_dll_state() == AIRPCAP_DLL_OLD) { + *nInfo = num_legacy_channels; + *cInfo = (AirpcapChannelInfo*)&LegacyChannels; + + return TRUE; + } else if (airpcap_get_dll_state() == AIRPCAP_DLL_OK) { + return g_PAirpcapGetDeviceSupportedChannels(ah, cInfo, nInfo); + } + return FALSE; +} + +/* + * Airpcap wrapper, used to get the supported channels of an airpcap adapter + */ +Dot11Channel* +airpcap_if_get_device_supported_channels_array(PAirpcapHandle ah, guint * pNumSupportedChannels) +{ + AirpcapChannelInfo *chanInfo; + guint numInfo = 0; + + if (!AirpcapLoaded) + return NULL; + if (airpcap_if_get_device_supported_channels(ah, &chanInfo, &numInfo) == FALSE) + return NULL; + numSupportedChannels = 0; + + /* + * allocate a bigger array + */ + if (numInfo == 0) + return NULL; + + pSupportedChannels = (Dot11Channel *)g_malloc(numInfo * (sizeof *pSupportedChannels)); + + for (guint i = 0; i < numInfo; i++) + { + guint supportedChannel = G_MAXUINT; + + /* + * search if we have it already + */ + for (guint j = 0; j < numSupportedChannels; j++) + { + if (pSupportedChannels[j].Frequency == chanInfo[i].Frequency) + { + supportedChannel = j; + break; + } + } + + if (supportedChannel == G_MAXUINT) + { + /* + * not found, create a new item + */ + pSupportedChannels[numSupportedChannels].Frequency = chanInfo[i].Frequency; + + switch(chanInfo[i].ExtChannel) + { + case -1: + pSupportedChannels[numSupportedChannels].Flags = FLAG_CAN_BE_LOW; + break; + case +1: + pSupportedChannels[numSupportedChannels].Flags = FLAG_CAN_BE_HIGH; + break; + case 0: + default: + pSupportedChannels[numSupportedChannels].Flags = 0; + } + + /* + * Gather channel information + */ + + pSupportedChannels[numSupportedChannels].Flags |= + FREQ_IS_BG(pSupportedChannels[numSupportedChannels].Frequency) ? + FLAG_IS_BG_CHANNEL : FLAG_IS_A_CHANNEL; + pSupportedChannels[numSupportedChannels].Channel = + ieee80211_mhz_to_chan(pSupportedChannels[numSupportedChannels].Frequency); + numSupportedChannels++; + } + else + { + /* + * just update the ext channel flags + */ + switch(chanInfo[i].ExtChannel) + { + case -1: + pSupportedChannels[supportedChannel].Flags |= FLAG_CAN_BE_LOW; + break; + case +1: + pSupportedChannels[supportedChannel].Flags |= FLAG_CAN_BE_HIGH; + break; + case 0: + default: + break; + } + } + } + + if (numSupportedChannels < 1) + return NULL; + /* + * Now sort the list by frequency + */ + for (guint i = 0; i < numSupportedChannels - 1; i++) + { + for (guint j = i + 1; j < numSupportedChannels; j++) + { + if (pSupportedChannels[i].Frequency > pSupportedChannels[j].Frequency) + { + Dot11Channel temp = pSupportedChannels[i]; + pSupportedChannels[i] = pSupportedChannels[j]; + pSupportedChannels[j] = temp; + } + } + } + + *pNumSupportedChannels = numSupportedChannels; + return pSupportedChannels; +} + +/* + * Airpcap wrapper, used to set the channel of an airpcap adapter + */ +gboolean +airpcap_if_set_device_channel(PAirpcapHandle ah, guint ch) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapSetDeviceChannel(ah,ch); +} + +/* + * Airpcap wrapper, used to set the frequency of an airpcap adapter + */ +gboolean +airpcap_if_set_device_channel_ex(PAirpcapHandle ah, AirpcapChannelInfo ChannelInfo) +{ + if (!AirpcapLoaded) return FALSE; + if (airpcap_get_dll_state() == AIRPCAP_DLL_OLD){ + gint channel = 0; + channel = ieee80211_mhz_to_chan(ChannelInfo.Frequency); + + if (channel < 0){ + return FALSE; + } else { + return airpcap_if_set_device_channel(ah, channel); + } + } else if (airpcap_get_dll_state() == AIRPCAP_DLL_OK){ + return g_PAirpcapSetDeviceChannelEx (ah, ChannelInfo); + } + + return FALSE; +} + +/* + * Airpcap wrapper, used to get the frequency of an airpcap adapter + */ +gboolean +airpcap_if_get_device_channel_ex(PAirpcapHandle ah, PAirpcapChannelInfo pChannelInfo) +{ + if (!AirpcapLoaded) return FALSE; + + pChannelInfo->Frequency = 0; + pChannelInfo->ExtChannel = 0; + pChannelInfo->Reserved[0] = 0; + pChannelInfo->Reserved[1] = 0; + pChannelInfo->Reserved[2] = 0; + + if (airpcap_get_dll_state() == AIRPCAP_DLL_OLD){ + guint channel = 0; + guint chan_freq = 0; + + if (!airpcap_if_get_device_channel(ah, &channel)) return FALSE; + + chan_freq = ieee80211_chan_to_mhz(channel, TRUE); + if (chan_freq == 0) return FALSE; + pChannelInfo->Frequency = chan_freq; + + return TRUE; + } else if (airpcap_get_dll_state() == AIRPCAP_DLL_OK){ + return g_PAirpcapGetDeviceChannelEx (ah, pChannelInfo); + } + return FALSE; +} + +/* + * Airpcap wrapper, used to get the link type of an airpcap adapter + */ +gboolean +airpcap_if_get_link_type(PAirpcapHandle ah, PAirpcapLinkType lt) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapGetLinkType(ah,lt); +} + +/* + * Airpcap wrapper, used to set the link type of an airpcap adapter + */ +gboolean +airpcap_if_set_link_type(PAirpcapHandle ah, AirpcapLinkType lt) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapSetLinkType(ah,lt); +} + +/* + * Airpcap wrapper, used to get the fcs presence of an airpcap adapter + */ +gboolean +airpcap_if_get_fcs_presence(PAirpcapHandle ah, gboolean * fcs) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapGetFcsPresence(ah,fcs); +} + +/* + * Airpcap wrapper, used to set the fcs presence of an airpcap adapter + */ +gboolean +airpcap_if_set_fcs_presence(PAirpcapHandle ah, gboolean fcs) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapSetFcsPresence(ah,fcs); +} + +/* + * Airpcap wrapper, used to get the decryption enabling of an airpcap adapter + */ +gboolean +airpcap_if_get_decryption_state(PAirpcapHandle ah, PAirpcapDecryptionState PEnable) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapGetDecryptionState(ah,PEnable); +} + +/* + * Airpcap wrapper, used to set the decryption enabling of an airpcap adapter + */ +gboolean +airpcap_if_set_decryption_state(PAirpcapHandle ah, AirpcapDecryptionState Enable) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapSetDecryptionState(ah,Enable); +} + +/* + * Airpcap wrapper, used to get the decryption enabling of an airpcap driver + */ +gboolean +airpcap_if_get_driver_decryption_state(PAirpcapHandle ah, PAirpcapDecryptionState PEnable) +{ + if (!AirpcapLoaded || (g_PAirpcapGetDriverDecryptionState==NULL)) return FALSE; + return g_PAirpcapGetDriverDecryptionState(ah,PEnable); +} + +/* + * Airpcap wrapper, used to set the decryption enabling of an airpcap driver + */ +gboolean +airpcap_if_set_driver_decryption_state(PAirpcapHandle ah, AirpcapDecryptionState Enable) +{ + if (!AirpcapLoaded || (g_PAirpcapSetDriverDecryptionState==NULL)) return FALSE; + return g_PAirpcapSetDriverDecryptionState(ah,Enable); +} + +/* + * Airpcap wrapper, used to get the fcs validation of an airpcap adapter + */ +gboolean +airpcap_if_get_fcs_validation(PAirpcapHandle ah, PAirpcapValidationType val) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapGetFcsValidation(ah,val); +} + +/* + * Airpcap wrapper, used to set the fcs validation of an airpcap adapter + */ +gboolean +airpcap_if_set_fcs_validation(PAirpcapHandle ah, AirpcapValidationType val) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapSetFcsValidation(ah,val); +} + +/* + * Airpcap wrapper, used to save the settings for the selected_if + */ +gboolean +airpcap_if_set_device_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapSetDeviceKeys(AdapterHandle,KeysCollection); +} + +/* + * Airpcap wrapper, used to save the settings for the selected_if + */ +gboolean +airpcap_if_get_device_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection, guint * PKeysCollectionSize) +{ + if (!AirpcapLoaded) return FALSE; + return g_PAirpcapGetDeviceKeys(AdapterHandle,KeysCollection,PKeysCollectionSize); +} + +/* + * Airpcap wrapper, used to save the driver's set of keys + */ +gboolean +airpcap_if_set_driver_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection) +{ + if (!AirpcapLoaded || (g_PAirpcapSetDriverKeys==NULL)) return FALSE; + return g_PAirpcapSetDriverKeys(AdapterHandle,KeysCollection); +} + +/* + * Airpcap wrapper, used to load the driver's set of keys + */ +gboolean +airpcap_if_get_driver_keys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection, guint * PKeysCollectionSize) +{ + if (!AirpcapLoaded || (g_PAirpcapGetDriverKeys==NULL)) return FALSE; + return g_PAirpcapGetDriverKeys(AdapterHandle,KeysCollection,PKeysCollectionSize); +} + +/* + * This function will create a new airpcap_if_info_t using a name and a description + */ +airpcap_if_info_t * +airpcap_if_info_new(char *name, char *description) +{ + PAirpcapHandle ad; + gchar ebuf[AIRPCAP_ERRBUF_SIZE]; + + airpcap_if_info_t *if_info = NULL; + + /* Probably I have to switch on the leds!!! */ + ad = airpcap_if_open(name, ebuf); + if (ad) + { + if_info = g_new0(airpcap_if_info_t, 1); + if_info->name = g_strdup(name); + if (description == NULL){ + if_info->description = NULL; + }else{ + if_info->description = g_strdup(description); + } + + if_info->ip_addr = NULL; + if_info->loopback = FALSE; + airpcap_if_get_fcs_validation(ad,&(if_info->CrcValidationOn)); + airpcap_if_get_fcs_presence(ad,&(if_info->IsFcsPresent)); + airpcap_if_get_link_type(ad,&(if_info->linkType)); + airpcap_if_get_device_channel_ex(ad,&(if_info->channelInfo)); + if_info->pSupportedChannels = airpcap_if_get_device_supported_channels_array(ad, &(if_info->numSupportedChannels)); + airpcap_if_turn_led_on(ad, 0); + airpcap_if_get_decryption_state(ad, &(if_info->DecryptionOn)); + if_info->led = TRUE; + if_info->blinking = FALSE; + if_info->saved = TRUE; /* NO NEED TO BE SAVED */ + + /* get the keys, if everything is ok, close the adapter */ + if (airpcap_if_load_keys(ad,if_info)) + { + airpcap_if_close(ad); + } + } + return if_info; +} + +/* + * This function will create a new fake drivers' interface, to load global keys... + */ +airpcap_if_info_t* +airpcap_driver_fake_if_info_new(void) +{ + PAirpcapHandle ad; + gchar ebuf[AIRPCAP_ERRBUF_SIZE]; + + airpcap_if_info_t *if_info = NULL; + airpcap_if_info_t *fake_if_info = NULL; + + /* Maybe for some reason no airpcap adapter is found */ + if (g_airpcap_if_list == NULL) + return NULL; + + /* + * Retrieve the first AirPcap adapter available. If no interface is found, + * it is not possible to retrieve the driver's settings, so return NULL. + */ + if_info = (airpcap_if_info_t *)g_list_nth_data(g_airpcap_if_list,0); + if (if_info == NULL) + return NULL; + + /* Open the 'fake' adapter */ + ad = airpcap_if_open(if_info->name, ebuf); + if (ad) + { + fake_if_info = g_new0(airpcap_if_info_t, 1); + fake_if_info->name = g_strdup(if_info->name); + fake_if_info->description = g_strdup(if_info->description); + fake_if_info->loopback = FALSE; + fake_if_info->ip_addr = NULL; + airpcap_if_get_driver_decryption_state(ad, &(fake_if_info->DecryptionOn)); + airpcap_if_get_fcs_validation(ad,&(fake_if_info->CrcValidationOn)); + airpcap_if_get_fcs_presence(ad,&(fake_if_info->IsFcsPresent)); + airpcap_if_get_link_type(ad,&(fake_if_info->linkType)); + airpcap_if_get_device_channel_ex(ad,&(fake_if_info->channelInfo)); + airpcap_if_turn_led_on(ad, 0); + fake_if_info->led = TRUE; + fake_if_info->blinking = FALSE; + fake_if_info->saved = TRUE; /* NO NEED TO BE SAVED */ + + /* get the keys, if everything is ok, close the adapter */ + if (airpcap_if_load_driver_keys(ad,fake_if_info)) + { + airpcap_if_close(ad); + } + } + + return fake_if_info; +} + +#ifdef AIRPCAP_DEBUG +/* + * USED FOR DEBUG ONLY... PRINTS AN AirPcap ADAPTER STRUCTURE in a fancy way. + */ +void +airpcap_if_info_print(airpcap_if_info_t* if_info) +{ + guint i; + if (if_info == NULL) + { + g_print("\nWARNING : AirPcap Interface pointer is NULL.\n"); + return; + } + + g_print("\n----------------- AirPcap Interface \n"); + g_print(" NAME: %s\n",if_info->name); + g_print(" DESCRIPTION: %s\n",if_info->description); + g_print(" BLINKING: %s\n",if_info->blinking ? "TRUE" : "FALSE"); + g_print(" channelInfo.Frequency: %u\n",if_info->channelInfo.Frequency); + g_print(" channelInfo.ExtChannel: %d\n",if_info->channelInfo.ExtChannel); + g_print(" CRCVALIDATION: %s\n",if_info->CrcValidationOn ? "ON" : "OFF"); + g_print(" DECRYPTION: %s\n",if_info->DecryptionOn ? "ON" : "OFF"); + g_print(" IP ADDR: %s\n",if_info->ip_addr!=NULL ? "NOT NULL" : "NULL"); + g_print(" FCSPRESENT: %s\n",if_info->IsFcsPresent ? "TRUE" : "FALSE"); + g_print(" KEYSCOLLECTION: %s\n",if_info->keysCollection!=NULL ? "NOT NULL" : "NULL"); + g_print(" KEYSCOLLECTIONSIZE: %u\n",if_info->keysCollectionSize); + g_print(" LED: %s\n",if_info->led ? "ON" : "OFF"); + g_print(" LINKTYPE: %d\n",if_info->linkType); + g_print(" LOOPBACK: %s\n",if_info->loopback ? "YES" : "NO"); + g_print(" (GTK) TAG: %d\n",if_info->tag); + g_print("SUPPORTED CHANNELS POINTER: %p\n",if_info->pSupportedChannels); + g_print(" NUM SUPPORTED CHANNELS: %u\n",if_info->numSupportedChannels); + + for(i=0; i<(if_info->numSupportedChannels); i++){ + g_print("\n SUPPORTED CHANNEL #%u\n",i+1); + g_print(" CHANNEL: %u\n",if_info->pSupportedChannels[i].Channel); + g_print(" FREQUENCY: %u\n",if_info->pSupportedChannels[i].Frequency); + g_print(" FLAGS: %u\n",if_info->pSupportedChannels[i].Flags); + } + g_print("\n\n"); +} +#endif /* AIRPCAP_DEBUG */ + +/* + * Function used to load the WEP keys for a selected interface + */ +gboolean +airpcap_if_load_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info) +{ + if (!if_info) return FALSE; + + if_info->keysCollectionSize = 0; + if_info->keysCollection = NULL; + + if (!airpcap_if_get_device_keys(ad, NULL, &(if_info->keysCollectionSize))) + { + if (if_info->keysCollectionSize == 0) + { + if_info->keysCollection = NULL; + airpcap_if_close(ad); + return FALSE; + } + + if_info->keysCollection = (PAirpcapKeysCollection)g_malloc(if_info->keysCollectionSize); + if (!if_info->keysCollection) + { + if_info->keysCollectionSize = 0; + if_info->keysCollection = NULL; + airpcap_if_close(ad); + return FALSE; + } + + airpcap_if_get_device_keys(ad, if_info->keysCollection, &(if_info->keysCollectionSize)); + return TRUE; + } + + airpcap_if_close(ad); + return FALSE; +} + +/* + * Function used to load the WEP keys for a selected interface + */ +gboolean +airpcap_if_load_driver_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info) +{ + if_info->keysCollectionSize = 0; + if_info->keysCollection = NULL; + + if (!airpcap_if_get_driver_keys(ad, NULL, &(if_info->keysCollectionSize))) + { + if (if_info->keysCollectionSize == 0) + { + if_info->keysCollection = NULL; + airpcap_if_close(ad); + return FALSE; + } + + if_info->keysCollection = (PAirpcapKeysCollection)g_malloc(if_info->keysCollectionSize); + if (!if_info->keysCollection) + { + if_info->keysCollectionSize = 0; + if_info->keysCollection = NULL; + airpcap_if_close(ad); + return FALSE; + } + + airpcap_if_get_driver_keys(ad, if_info->keysCollection, &(if_info->keysCollectionSize)); + return TRUE; + } + + airpcap_if_close(ad); + return FALSE; +} + +/* + * Function used to save the WEP keys for a selected interface + */ +void +airpcap_if_save_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info) +{ + if (!if_info || !AirpcapLoaded) return; + + if (if_info->keysCollection != NULL) + g_PAirpcapSetDeviceKeys(ad,if_info->keysCollection); +} + +/* + * Function used to save the WEP keys for a selected interface + */ +void +airpcap_if_save_driver_keys(PAirpcapHandle ad, airpcap_if_info_t *if_info) +{ + if (if_info->keysCollection != NULL) + airpcap_if_set_driver_keys(ad,if_info->keysCollection); +} + +/* + * Callback used to free an instance of airpcap_if_info_t + */ +static void +free_airpcap_if_cb(gpointer data, gpointer user_data _U_) +{ + airpcap_if_info_t *if_info = (airpcap_if_info_t *)data; + + if (NULL == if_info) + return; + + g_free(if_info->name); + + g_free(if_info->description); + + /* XXX - FREE THE WEP KEY LIST HERE!!!*/ + if (if_info->keysCollection != NULL) + { + g_free(if_info->keysCollection); + if_info->keysCollection = NULL; + } + + g_slist_free(if_info->ip_addr); + + g_free(if_info); +} + +/* + * Function used to free the airpcap interface list + */ +void +free_airpcap_interface_list(GList *if_list) +{ + g_list_foreach(if_list, free_airpcap_if_cb, NULL); + g_list_free(if_list); +} + +/* + * This function will use the airpcap.dll to find all the airpcap devices. + * Will return null if no device is found. + */ +GList* +get_airpcap_interface_list(int *err, char **err_str) +{ + GList *il = NULL; + airpcap_if_info_t *if_info; + int n_adapts; + AirpcapDeviceDescription *devsList, *adListEntry; + char errbuf[AIRPCAP_ERRBUF_SIZE]; + + *err = 0; + + if (!AirpcapLoaded) + { + *err = AIRPCAP_NOT_LOADED; + return il; + } + + if (!g_PAirpcapGetDeviceList(&devsList, errbuf)) + { + /* No interfaces, return il = NULL; */ + *err = CANT_GET_AIRPCAP_INTERFACE_LIST; + if (err_str != NULL) + *err_str = cant_get_airpcap_if_list_error_message(errbuf); + return il; + } + + /* + * Count the adapters + */ + adListEntry = devsList; + n_adapts = 0; + while(adListEntry) + { + n_adapts++; + adListEntry = adListEntry->next; + } + + if (n_adapts == 0) + { + /* No interfaces, return il= NULL */ + g_PAirpcapFreeDeviceList(devsList); + *err = NO_AIRPCAP_INTERFACES_FOUND; + if (err_str != NULL) + *err_str = NULL; + return il; + } + + /* + * Insert the adapters in our list + */ + adListEntry = devsList; + while(adListEntry) + { + if_info = airpcap_if_info_new(adListEntry->Name, adListEntry->Description); + if (if_info != NULL){ + il = g_list_append(il, if_info); + } + + adListEntry = adListEntry->next; + } + + g_PAirpcapFreeDeviceList(devsList); + + return il; +} + +/* + * Used to retrieve the interface given the name + * (the name is used in AirpcapOpen) + */ +airpcap_if_info_t* get_airpcap_if_from_name(GList* if_list, const gchar* name) +{ + GList* curr; + airpcap_if_info_t* if_info; + + for (curr = g_list_first(if_list); curr; curr = g_list_next(curr)) { + if_info = (airpcap_if_info_t *)curr->data; + if (if_info && (g_ascii_strcasecmp(if_info->name, name) == 0)) { + return (if_info); + } + /* Try the name without the "\\.\" prefix. */ + if (strlen(if_info->name) > 4 && (g_ascii_strcasecmp(if_info->name + 4, name) == 0)) { + return (if_info); + } + } + return (NULL); +} + +/* + * Clear keys and decryption status for the specified interface + */ +void +airpcap_if_clear_decryption_settings(airpcap_if_info_t* info_if) +{ + if (info_if != NULL) + { + if (info_if->keysCollection != NULL) + { + g_free(info_if->keysCollection); + info_if->keysCollection = NULL; + } + + info_if->keysCollectionSize = 0; + + info_if->DecryptionOn = AIRPCAP_DECRYPTION_OFF; + info_if->saved = FALSE; + } +} + +/* + * Used to retrieve the two chars string from interface + */ +gchar* +airpcap_get_if_string_number(airpcap_if_info_t* if_info) +{ + gchar* number; + guint n; + int a; + + a = sscanf(if_info->name,AIRPCAP_DEVICE_NUMBER_EXTRACT_STRING,&n); + + /* If sscanf() returned 1, it means that has read a number, so interface is not "Any" + * Otherwise, check if it is the "Any" adapter... + */ + if (a == 0) + { + if (g_ascii_strcasecmp(if_info->name,AIRPCAP_DEVICE_ANY_EXTRACT_STRING)!=0) + number = g_strdup("??"); + else + number = g_strdup(AIRPCAP_CHANNEL_ANY_NAME); + } + else + { + number = g_strdup_printf("%.2u",n); + } + + return number; +} + +/* + * Used to retrieve the two chars string from interface + */ +gchar* +airpcap_get_if_string_number_from_description(gchar* description) +{ + gchar* number; + gchar* pointer; + + number = g_new(gchar, 3); + + pointer = g_strrstr(description,"#\0"); + + number[0] = *(pointer+1); + number[1] = *(pointer+2); + number[2] = '\0'; + + return number; +} + +/* + * Load the configuration for the specified interface + */ +void +airpcap_load_selected_if_configuration(airpcap_if_info_t* if_info) +{ + gchar ebuf[AIRPCAP_ERRBUF_SIZE]; + PAirpcapHandle ad; + + if (if_info != NULL) + { + ad = airpcap_if_open(if_info->name, ebuf); + + if (ad) + { + /* Stop blinking (if it was blinking!)*/ + if (if_info->blinking) + { + /* Turn on the light (if it was off) */ + if (!(if_info->led)) airpcap_if_turn_led_on(ad, 0); + } + + /* Apply settings... */ + airpcap_if_get_device_channel_ex(ad,&(if_info->channelInfo)); + airpcap_if_get_fcs_validation(ad,&(if_info->CrcValidationOn)); + airpcap_if_get_fcs_presence(ad,&(if_info->IsFcsPresent)); + airpcap_if_get_link_type(ad,&(if_info->linkType)); + airpcap_if_get_decryption_state(ad, &(if_info->DecryptionOn)); + /* get the keys, if everything is ok, close the adapter */ + if (airpcap_if_load_keys(ad,if_info)) + airpcap_if_close(ad); + + if_info->saved = TRUE; + } +#if 0 + else + { + simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, " Error in opening adapter for %s",if_info->description); + } +#endif + } +} + +/* + * Save the configuration for the specified interface + */ +void +airpcap_save_selected_if_configuration(airpcap_if_info_t* if_info) +{ + gchar ebuf[AIRPCAP_ERRBUF_SIZE]; + PAirpcapHandle ad; + + if (if_info != NULL) + { + ad = airpcap_if_open(if_info->name, ebuf); + + if (ad) + { + /* Stop blinking (if it was blinking!)*/ + if (if_info->blinking) + { + /* Turn on the light (if it was off) */ + if (!(if_info->led)) airpcap_if_turn_led_on(ad, 0); + } + + /* Apply settings... */ + airpcap_if_set_device_channel_ex(ad,if_info->channelInfo); + airpcap_if_set_fcs_validation(ad,if_info->CrcValidationOn); + airpcap_if_set_fcs_presence(ad,if_info->IsFcsPresent); + airpcap_if_set_link_type(ad,if_info->linkType); + airpcap_if_set_decryption_state(ad, if_info->DecryptionOn); + airpcap_if_save_keys(ad,if_info); + + /* ... and save them */ + if (!airpcap_if_store_cur_config_as_adapter_default(ad)) + { +#if 0 + 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."); +#endif + if_info->saved = FALSE; + airpcap_if_close(ad); + return; + } + + if_info->saved = TRUE; + airpcap_if_close(ad); + } +#if 0 + else + { + simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, " Error in opening adapter for %s",if_info->description); + } +#endif + } +} + +/* + * Save the configuration for the specified interface + */ +void +airpcap_save_driver_if_configuration(airpcap_if_info_t* fake_if_info) +{ + gchar ebuf[AIRPCAP_ERRBUF_SIZE]; + PAirpcapHandle ad; + + if (fake_if_info != NULL) + { + ad = airpcap_if_open(fake_if_info->name, ebuf); + + if (ad) + { + /* Apply decryption settings... */ + airpcap_if_set_driver_decryption_state(ad, fake_if_info->DecryptionOn); + airpcap_if_save_driver_keys(ad,fake_if_info); + airpcap_if_close(ad); + } +#if 0 + else + { + simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, " Error in opening adapter for %s",fake_if_info->description); + } +#endif + } + + return; +} + +/* + * Free an instance of airpcap_if_info_t + */ +void +airpcap_if_info_free(airpcap_if_info_t *if_info) +{ + if (if_info != NULL) + { + g_free(if_info->name); + + g_free(if_info->description); + + if (if_info->keysCollection != NULL) + { + g_free(if_info->keysCollection); + if_info->keysCollection = NULL; + } + + if (if_info->ip_addr != NULL) + { + g_slist_free(if_info->ip_addr); + if_info->ip_addr = NULL; + } + + g_free(if_info); + } +} + + +/* DYNAMIC LIBRARY LOADER */ +/* + * Used to dynamically load the airpcap library in order link it only when + * it's present on the system + */ +int load_airpcap(void) +{ +#ifdef _WIN32 + gboolean base_functions = TRUE; + gboolean eleven_n_functions = TRUE; + + if ((AirpcapLib = ws_load_library("airpcap.dll")) == NULL) + { + /* Report the error but go on */ + AirpcapVersion = AIRPCAP_DLL_NOT_FOUND; + return AirpcapVersion; + } + else + { + if ((g_PAirpcapGetLastError = (AirpcapGetLastErrorHandler) GetProcAddress(AirpcapLib, "AirpcapGetLastError")) == NULL) base_functions = FALSE; + if ((g_PAirpcapGetDeviceList = (AirpcapGetDeviceListHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceList")) == NULL) base_functions = FALSE; + if ((g_PAirpcapFreeDeviceList = (AirpcapFreeDeviceListHandler) GetProcAddress(AirpcapLib, "AirpcapFreeDeviceList")) == NULL) base_functions = FALSE; + if ((g_PAirpcapOpen = (AirpcapOpenHandler) GetProcAddress(AirpcapLib, "AirpcapOpen")) == NULL) base_functions = FALSE; + if ((g_PAirpcapClose = (AirpcapCloseHandler) GetProcAddress(AirpcapLib, "AirpcapClose")) == NULL) base_functions = FALSE; + if ((g_PAirpcapGetLinkType = (AirpcapGetLinkTypeHandler) GetProcAddress(AirpcapLib, "AirpcapGetLinkType")) == NULL) base_functions = FALSE; + if ((g_PAirpcapSetLinkType = (AirpcapSetLinkTypeHandler) GetProcAddress(AirpcapLib, "AirpcapSetLinkType")) == NULL) base_functions = FALSE; + if ((g_PAirpcapSetKernelBuffer = (AirpcapSetKernelBufferHandler) GetProcAddress(AirpcapLib, "AirpcapSetKernelBuffer")) == NULL) base_functions = FALSE; + if ((g_PAirpcapSetFilter = (AirpcapSetFilterHandler) GetProcAddress(AirpcapLib, "AirpcapSetFilter")) == NULL) base_functions = FALSE; + if ((g_PAirpcapGetMacAddress = (AirpcapGetMacAddressHandler) GetProcAddress(AirpcapLib, "AirpcapGetMacAddress")) == NULL) base_functions = FALSE; + if ((g_PAirpcapSetMinToCopy = (AirpcapSetMinToCopyHandler) GetProcAddress(AirpcapLib, "AirpcapSetMinToCopy")) == NULL) base_functions = FALSE; + if ((g_PAirpcapGetReadEvent = (AirpcapGetReadEventHandler) GetProcAddress(AirpcapLib, "AirpcapGetReadEvent")) == NULL) base_functions = FALSE; + if ((g_PAirpcapRead = (AirpcapReadHandler) GetProcAddress(AirpcapLib, "AirpcapRead")) == NULL) base_functions = FALSE; + if ((g_PAirpcapGetStats = (AirpcapGetStatsHandler) GetProcAddress(AirpcapLib, "AirpcapGetStats")) == NULL) base_functions = FALSE; + if ((g_PAirpcapTurnLedOn = (AirpcapTurnLedOnHandler) GetProcAddress(AirpcapLib, "AirpcapTurnLedOn")) == NULL) base_functions = FALSE; + if ((g_PAirpcapTurnLedOff = (AirpcapTurnLedOffHandler) GetProcAddress(AirpcapLib, "AirpcapTurnLedOff")) == NULL) base_functions = FALSE; + if ((g_PAirpcapGetDeviceChannel = (AirpcapGetDeviceChannelHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceChannel")) == NULL) base_functions = FALSE; + if ((g_PAirpcapSetDeviceChannel = (AirpcapSetDeviceChannelHandler) GetProcAddress(AirpcapLib, "AirpcapSetDeviceChannel")) == NULL) base_functions = FALSE; + if ((g_PAirpcapGetFcsPresence = (AirpcapGetFcsPresenceHandler) GetProcAddress(AirpcapLib, "AirpcapGetFcsPresence")) == NULL) base_functions = FALSE; + if ((g_PAirpcapSetFcsPresence = (AirpcapSetFcsPresenceHandler) GetProcAddress(AirpcapLib, "AirpcapSetFcsPresence")) == NULL) base_functions = FALSE; + if ((g_PAirpcapGetFcsValidation = (AirpcapGetFcsValidationHandler) GetProcAddress(AirpcapLib, "AirpcapGetFcsValidation")) == NULL) base_functions = FALSE; + if ((g_PAirpcapSetFcsValidation = (AirpcapSetFcsValidationHandler) GetProcAddress(AirpcapLib, "AirpcapSetFcsValidation")) == NULL) base_functions = FALSE; + if ((g_PAirpcapGetDeviceKeys = (AirpcapGetDeviceKeysHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceKeys")) == NULL) base_functions = FALSE; + if ((g_PAirpcapSetDeviceKeys = (AirpcapSetDeviceKeysHandler) GetProcAddress(AirpcapLib, "AirpcapSetDeviceKeys")) == NULL) base_functions = FALSE; + if ((g_PAirpcapGetDecryptionState = (AirpcapGetDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapGetDecryptionState")) == NULL) base_functions = FALSE; + if ((g_PAirpcapSetDecryptionState = (AirpcapSetDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapSetDecryptionState")) == NULL) base_functions = FALSE; + if ((g_PAirpcapStoreCurConfigAsAdapterDefault = (AirpcapStoreCurConfigAsAdapterDefaultHandler) GetProcAddress(AirpcapLib, "AirpcapStoreCurConfigAsAdapterDefault")) == NULL) base_functions = FALSE; + if ((g_PAirpcapGetVersion = (AirpcapGetVersionHandler) GetProcAddress(AirpcapLib, "AirpcapGetVersion")) == NULL) base_functions = FALSE; + if ((g_PAirpcapGetDriverDecryptionState = (AirpcapGetDriverDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapGetDriverDecryptionState")) == NULL) base_functions = FALSE; + if ((g_PAirpcapSetDriverDecryptionState = (AirpcapSetDriverDecryptionStateHandler) GetProcAddress(AirpcapLib, "AirpcapSetDriverDecryptionState")) == NULL) base_functions = FALSE; + if ((g_PAirpcapGetDriverKeys = (AirpcapGetDriverKeysHandler) GetProcAddress(AirpcapLib, "AirpcapGetDriverKeys")) == NULL) base_functions = FALSE; + if ((g_PAirpcapSetDriverKeys = (AirpcapSetDriverKeysHandler) GetProcAddress(AirpcapLib, "AirpcapSetDriverKeys")) == NULL) base_functions = FALSE; + + /* TEST IF AIRPCAP SUPPORTS 11N */ + if ((g_PAirpcapSetDeviceChannelEx = (AirpcapSetDeviceChannelExHandler) GetProcAddress(AirpcapLib, "AirpcapSetDeviceChannelEx")) == NULL) eleven_n_functions = FALSE; + if ((g_PAirpcapGetDeviceChannelEx = (AirpcapGetDeviceChannelExHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceChannelEx")) == NULL) eleven_n_functions = FALSE; + if ((g_PAirpcapGetDeviceSupportedChannels = (AirpcapGetDeviceSupportedChannelsHandler) GetProcAddress(AirpcapLib, "AirpcapGetDeviceSupportedChannels")) == NULL) eleven_n_functions = FALSE; + + if (base_functions && eleven_n_functions){ + AirpcapLoaded = TRUE; + AirpcapVersion = AIRPCAP_DLL_OK; + } else if (base_functions){ + AirpcapLoaded = TRUE; + AirpcapVersion = AIRPCAP_DLL_OLD; + return AIRPCAP_DLL_OK; + }else{ + AirpcapLoaded = FALSE; + AirpcapVersion = AIRPCAP_DLL_ERROR; + } + } + return AirpcapVersion; +#else /* _WIN32 */ + return AIRPCAP_DLL_NOT_FOUND; +#endif /* _WIN32 */ +} + +/* + * Append the version of AirPcap with which we were compiled to a GString. + */ +void +get_compiled_airpcap_version(GString *str) +{ + g_string_append(str, "with AirPcap"); +} + +/* + * Append the version of AirPcap with which we we're running to a GString. + */ +void +get_runtime_airpcap_version(GString *str) +{ + guint vmaj, vmin, vrev, build; + + /* See if the DLL has been loaded successfully. Bail if it hasn't */ + if (AirpcapLoaded == FALSE) { + g_string_append(str, "without AirPcap"); + return; + } + + g_PAirpcapGetVersion(&vmaj, &vmin, &vrev, &build); + g_string_append_printf(str, "with AirPcap %d.%d.%d build %d", vmaj, vmin, + vrev, build); +} + +/* + * Editor modelines - https://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 4 + * tab-width: 8 + * indent-tabs-mode: nil + * End: + * + * vi: set shiftwidth=4 tabstop=8 expandtab: + * :indentSize=4:tabSize=8:noTabs=true: + */ |