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wireshark/caputils/airpcap_loader.c

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/* 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/airpdcap_ws.h>
#include <epan/strutil.h>
#include <wsutil/file_util.h>
#include <wsutil/frequency-utils.h>
#include <caputils/airpcap.h>
#include <caputils/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 i=0, j=0, 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 (i = 0; i < numInfo; i++)
{
guint supportedChannel = G_MAXUINT;
/*
* search if we have it already
*/
for (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 (i = 0 ; i < numSupportedChannels - 1; i++)
{
for (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 = (airpcap_if_info_t *)g_malloc0(sizeof (airpcap_if_info_t));
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 = (airpcap_if_info_t *)g_malloc0(sizeof (airpcap_if_info_t));
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 = (gchar*)g_malloc(sizeof(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 - http://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:
*/
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