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+/*
+ * Copyright (c) 2006 CACE Technologies, Davis (California)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#if !defined(AIRPCAP_H__EAE405F5_0171_9592_B3C2_C19EC426AD34__INCLUDED_)
+#define AIRPCAP_H__EAE405F5_0171_9592_B3C2_C19EC426AD34__INCLUDED_
+
+/* This disables a VS warning for zero-sized arrays. All the compilers we support have that feature */
+#pragma warning( disable : 4200)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*!
+ \mainpage AirPcap interface documentation
+
+ \section Introduction
+
+ This document describes the data structures and the functions exported by the CACE Technologies AirPcap library.
+ The AirPcap library provides low-level access to the AirPcap driver including advanced capabilities such as channel setting,
+ link type control and WEP configuration.<br>
+ This manual includes the following sections:
+
+ \note throughout this documentation, \i device refers to a physical USB AirPcap device, wile \i adapter is an open API
+ instance. Most of the AirPcap API operations are adapter-specific but some of them, like setting the channel, are
+ per-device and will be reflected on all the open adapters. These functions will have "Device" in their name, e.g.
+ AirpcapSetDeviceChannel().
+
+ \b Sections:
+
+ - \ref airpcapfuncs
+ - \ref airpcapdefs
+ - \ref radiotap
+*/
+
+/** @defgroup airpcapdefs AirPcap definitions and data structures
+ * @{
+ */
+
+/*!
+ \brief This string is the fixed prefix in the airpcap adapter name.
+ It can be used to parse the name field in an AirpcapDeviceDescription structure.
+*/
+#define AIRPCAP_DEVICE_NAME_PREFIX "\\\\.\\airpcap"
+
+/*!
+ \brief This string is the scanf modifier to extract the adapter number from an adapter name.
+ It can be used to parse the name field in an AirpcapDeviceDescription structure with scanf.
+*/
+#define AIRPCAP_DEVICE_NUMBER_EXTRACT_STRING "\\\\.\\airpcap%u"
+
+/*!
+ \brief Entry in the list returned by \ref AirpcapGetDeviceList();
+*/
+typedef struct _AirpcapDeviceDescription
+{
+ struct _AirpcapDeviceDescription *next; /* Next element in the list */
+ PCHAR Name; /* Device name */
+ PCHAR Description; /* Device description */
+} AirpcapDeviceDescription, *PAirpcapDeviceDescription;
+
+#define WEP_KEY_MAX_SIZE 32 /* Maximum size of a WEP key, in bytes. This is the size of an entry in the */
+ /* AirpcapWepKeysCollection structure */
+
+#ifndef __MINGW32__
+#pragma pack(push)
+#pragma pack(1)
+#endif /* __MINGW32__ */
+
+
+#define AIRPCAP_KEYTYPE_WEP 0 /* Key type: WEP. The key can have an arbitrary length smaller than 32 bytes. */
+#define AIRPCAP_KEYTYPE_TKIP 1 /* Key type: TKIP (WPA). NOT SUPPORTED YET. */
+#define AIRPCAP_KEYTYPE_CCMP 2 /* Key type: CCMP (WPA2). NOT SUPPORTED YET. */
+
+/*!
+ \brief WEP key container
+*/
+typedef struct _AirpcapKey
+{
+ UINT KeyType; /* Type of key, can be on of: \ref AIRPCAP_KEYTYPE_WEP, \ref AIRPCAP_KEYTYPE_TKIP, \ref AIRPCAP_KEYTYPE_CCMP. Only AIRPCAP_KEYTYPE_WEP is supported by the driver at the moment. */
+ UINT KeyLen; /* Length of the key, in bytes */
+ BYTE KeyData[WEP_KEY_MAX_SIZE]; /* Key Data */
+}
+#ifdef __MINGW32__
+__attribute__((__packed__))
+#endif /* __MINGW32__ */
+AirpcapKey, *PAirpcapKey;
+
+/*!
+ \brief Type of frame validation the adapter performs.
+ An adapter can be instructed to accept different kind of frames: correct frames only, frames with wrong Frame Check Sequence (FCS) only, all frames.
+*/
+typedef enum _AirpcapValidationType
+{
+ AIRPCAP_VT_ACCEPT_EVERYTHING = 1, /* Accept all the frames the device captures */
+ AIRPCAP_VT_ACCEPT_CORRECT_FRAMES = 2, /* Accept correct frames only, i.e. frames with correct Frame Check Sequence (FCS). */
+ AIRPCAP_VT_ACCEPT_CORRUPT_FRAMES = 3, /* Accept corrupt frames only, i.e. frames with worng Frame Check Sequence (FCS). */
+ AIRPCAP_VT_UNKNOWN = 4 /* Unknown validation type. You should see it only in case of error. */
+}AirpcapValidationType, *PAirpcapValidationType;
+
+/*!
+ \brief Type of decryption the adapter performs.
+ An adapter can be instructed to turn decryption (based on the device-configured keys configured
+ with \ref AirpcapSetDeviceKeys()) on or off.
+*/
+typedef enum _AirpcapDecryptionState
+{
+ AIRPCAP_DECRYPTION_ON = 1, /* This adapter performs decryption */
+ AIRPCAP_DECRYPTION_OFF = 2 /* This adapter does not perform decryption */
+}AirpcapDecryptionState, *PAirpcapDecryptionState;
+
+
+/*!
+ \brief Storage for a MAC address
+*/
+typedef struct _AirpcapMacAddress
+{
+ BYTE Address[6]; /* MAC address bytes */
+}
+#ifdef __MINGW32__
+__attribute__((__packed__))
+#endif /* __MINGW32__ */
+AirpcapMacAddress, *PAirpcapMacAddress;
+
+/*!
+ \brief This structure is used to store a collection of WEP keys.
+ Note that the definition of the structure doesn't contain any key, so be careful to allocate a buffer
+ with the size of the key, like in the following example:
+
+ \code
+ PAirpcapKeysCollection KeysCollection;
+ UINT KeysCollectionSize;
+
+ KeysCollectionSize = sizeof(AirpcapKeysCollection) + NumKeys * sizeof(AirpcapKey);
+
+ KeysCollection = (PAirpcapKeysCollection)malloc(KeysCollectionSize);
+ if(!KeysCollection)
+ {
+ // Error
+ }
+ \endcode
+*/
+typedef struct _AirpcapKeysCollection
+{
+ UINT nKeys; /* Number of keys in the collection */
+ AirpcapKey Keys[0]; /* Array of nKeys keys. */
+} AirpcapKeysCollection, *PAirpcapKeysCollection;
+
+/*!
+ \brief Packet header.
+
+ This structure defines the BPF that preceeds every packet delivered to the application.
+*/
+typedef struct _AirpcapBpfHeader
+{
+ UINT TsSec; /* Timestamp associated with the captured packet. SECONDS. */
+ UINT TsUsec; /* Timestamp associated with the captured packet. MICROSECONDS. */
+ UINT Caplen; /* Length of captured portion. The captured portion <b>can be different</b> from the original packet, because it is possible (with a proper filter) to instruct the driver to capture only a portion of the packets. */
+ UINT Originallen; /* Original length of packet */
+ USHORT Hdrlen; /* Length of bpf header (this struct plus alignment padding). In some cases, a padding could be added between the end of this structure and the packet data for performance reasons. This field can be used to retrieve the actual data of the packet. */
+}
+#ifdef __MINGW32__
+__attribute__((__packed__))
+#endif /* __MINGW32__ */
+AirpcapBpfHeader, *PAirpcapBpfHeader;
+
+/* Helper macros to extract packets coming from the driver. Rounds up to the next even multiple of AIRPCAP_ALIGNMENT. */
+#define AIRPCAP_ALIGNMENT sizeof(int)
+#define AIRPCAP_WORDALIGN(x) (((x)+(AIRPCAP_ALIGNMENT-1))&~(AIRPCAP_ALIGNMENT-1))
+
+#ifndef __MINGW32__
+#pragma pack(pop)
+#endif /* __MINGW32__ */
+
+#define AIRPCAP_ERRBUF_SIZE 512 /* Size of the error buffer, in bytes */
+
+#ifndef __AIRPCAP_DRIVER__
+
+/*!
+ \brief Link type.
+ AirPcap supports two kind of 802.11 linktypes: plain 802.11 and radiotap.
+*/
+typedef enum _AirpcapLinkType
+{
+ AIRPCAP_LT_802_11 = 1, /* plain 802.11 linktype. Every packet in the buffer contains the raw 802.11 frame, including MAC FCS. */
+ AIRPCAP_LT_802_11_PLUS_RADIO = 2, /* 802.11 plus radiotap linktype. Every packet in the buffer contains a radiotap header followed by the 802.11 frame. MAC FCS is included. */
+ AIRPCAP_LT_UNKNOWN = 3 /* Unknown linktype. You should see it only in case of error. */
+}AirpcapLinkType, *PAirpcapLinkType;
+
+#if !defined(AIRPCAP_HANDLE__EAE405F5_0171_9592_B3C2_C19EC426AD34__DEFINED_)
+#define AIRPCAP_HANDLE__EAE405F5_0171_9592_B3C2_C19EC426AD34__DEFINED_
+/*!
+ \brief Adapter handle.
+*/
+typedef struct _AirpcapHandle AirpcapHandle, *PAirpcapHandle;
+#endif
+
+/*!
+ \brief Capture statistics.
+ Returned by \ref AirpcapGetStats();
+*/
+typedef struct _AirpcapStats
+{
+ UINT Recvs; /* Number of packets that the driver received by the adapter */
+ /* from the beginning of the current capture. This value includes the packets */
+ /* dropped because of buffer full. */
+ UINT Drops; /* number of packets that the driver dropped from the beginning of a capture. */
+ /* A packet is lost when the the buffer of the driver is full. */
+ UINT IfDrops; /* Packets dropped by the card before going to the USB bus. */
+ /* Not supported at the moment. */
+ UINT Capt; /* number of packets that pass the BPF filter, find place in the kernel buffer and */
+ /* therefore reach the application. */
+}AirpcapStats, *PAirpcapStats;
+
+/*@}*/
+
+/** @defgroup airpcapfuncs AirPcap functions
+ * @{
+ */
+
+/*!
+ \brief Return a string with the API version
+ \param VersionMajor Pointer to a variable that will be filled with the major version number.
+ \param VersionMinor Pointer to a variable that will be filled with the minor version number.
+ \param VersionRev Pointer to a variable that will be filled with the revision number.
+ \param VersionBuild Pointer to a variable that will be filled with the build number.
+*/
+void AirpcapGetVersion(PUINT VersionMajor, PUINT VersionMinor, PUINT VersionRev, PUINT VersionBuild);
+
+/*!
+ \brief Return the last error related to the specified handle
+ \param AdapterHandle Handle to an open adapter.
+ \return The string with the last error.
+*/
+PCHAR AirpcapGetLastError(PAirpcapHandle AdapterHandle);
+
+/*!
+ \brief Return the list of available devices
+ \param PPAllDevs Address to a caller allocated pointer. On success this pointer will receive the head of a list of available devices.
+ \param Ebuf String that will contain error information if FALSE is returned. The size of the string must be AIRPCAP_ERRBUF_SIZE bytes.
+ \return TRUE on success. FALSE is returned on failure, in which case Ebuf is filled in with an appropriate error message.
+
+ Here's a snppet of code that shows how to use AirpcapGetDeviceList():
+
+ \code
+ CHAR Ebuf[AIRPCAP_ERRBUF_SIZE];
+ AirpcapDeviceDescription *Desc, *tDesc;
+
+ if(AirpcapGetDeviceList(&Desc, Ebuf) == -1)
+ {
+ printf("Unable to get the list of devices: %s\n", Ebuf);
+ return -1;
+ }
+
+ for(tDesc = Desc; tDesc; tDesc = tDesc->next)
+ {
+ printf("%u) %s (%s)\n",
+ ++i,
+ tDesc->Name,
+ tDesc->Description);
+ }
+ \endcode
+*/
+BOOL AirpcapGetDeviceList(PAirpcapDeviceDescription *PPAllDevs, PCHAR Ebuf);
+
+/*!
+ \brief Free a list of devices returned by AirpcapGetDeviceList()
+ \param PAllDevs Head of the list of devices returned by \ref AirpcapGetDeviceList().
+*/
+VOID AirpcapFreeDeviceList(PAirpcapDeviceDescription PAllDevs);
+
+/*!
+ \brief Open an adapter
+ \param DeviceName Name of the device to open. Use \ref AirpcapGetDeviceList() to get the list of devices.
+ \param Ebuf String that will contain error information in case of failure. The size of the string must be AIRPCAP_ERRBUF_SIZE bytes.
+ \return A PAirpcapHandle handle on success. NULL is returned on failure, in which case Ebuf is filled in with an appropriate error message.
+*/
+PAirpcapHandle AirpcapOpen(PCHAR DeviceName, PCHAR Ebuf);
+
+/*!
+ \brief Close an adapter
+ \param AdapterHandle Handle to the adapter to close.
+*/
+VOID AirpcapClose(PAirpcapHandle AdapterHandle);
+
+/*!
+ \brief Set the link type of an adapter
+ \param AdapterHandle Handle to the adapter.
+ \param NewLinkType the "link type", i.e. the format of the frames that will be received from the adapter.
+ \return TRUE on success.
+
+ the "link type" determines how the driver will encode the packets captured from the network.
+ Aircap supports two link types:
+ - AIRPCAP_LT_802_11, to capture 802.11 frames (including control frames) without any
+ power information. Look at the Capture_no_radio example application in the developer's pack
+ for a reference on how to decode 802.11 frames with this link type.
+ - AIRPCAP_LT_802_11_PLUS_RADIO, to capture 802.11 frames (including control frames) with a radiotap header
+ that contains power and channel information. More information about the radiotap header can be found int the
+ \ref radiotap section. Moreover, the "Capture_radio" example application in
+ the developer's pack can be used as a reference on how to decode 802.11 frames with radiotap headers.
+*/
+BOOL AirpcapSetLinkType(PAirpcapHandle AdapterHandle, AirpcapLinkType NewLinkType);
+
+/*!
+ \brief Get the link type of the specified adapter
+ \param AdapterHandle Handle to the adapter.
+ \param PLinkType Pointer to a caller allocated AirpcapLinkType variable that will contain the link type of the adapter.
+ \return TRUE on success.
+
+ the "link type" determines how the driver will encode the packets captured from the network.
+ Aircap supports two link types:
+ - AIRPCAP_LT_802_11, to capture 802.11 frames (including control frames) without any
+ power information. Look at the Capture_no_radio example application in the developer's pack
+ for a reference on how to decode 802.11 frames with this link type.
+ - AIRPCAP_LT_802_11_PLUS_RADIO, to capture 802.11 frames (including control frames) with a radiotap header
+ that contains power and channel information. More information about the radiotap header can be found int the
+ \ref radiotap section. Moreover, the "Capture_radio" example application in
+ the developer's pack can be used as a reference on how to decode 802.11 frames with radiotap headers.
+*/
+BOOL AirpcapGetLinkType(PAirpcapHandle AdapterHandle, PAirpcapLinkType PLinkType);
+
+/*!
+ \brief Configures the adapter on whether to include the MAC Frame Check Sequence in the captured packets.
+ \param AdapterHandle Handle to the adapter.
+ \param IsFcsPresent TRUE if the packets should include the FCS. FALSE otherwise
+ \return TRUE on success.
+
+ In the default configuration, the adapter includes the FCS in the captured packets. The MAC Frame Check Sequence
+ is 4 bytes and is located at the end of the 802.11 packet, with both AIRPCAP_LT_802_11 and AIRPCAP_LT_802_11_PLUS_RADIO
+ link types.
+ When the FCS inclusion is turned on, and if the link type is AIRPCAP_LT_802_11_PLUS_RADIO, the radiotap header
+ that precedes each frame has two additional fields at the end: Padding and FCS. These two fields are not present
+ when FCS inclusion is off.
+*/
+BOOL AirpcapSetFcsPresence(PAirpcapHandle AdapterHandle, BOOL IsFcsPresent);
+
+/*!
+ \brief Returns TRUE if the specified adapter includes the MAC Frame Check Sequence in the captured packets
+ \param AdapterHandle Handle to the adapter.
+ \param PIsFcsPresent User-provided variable that will be set to true if the adapter is including the FCS.
+ \return TRUE if the operation is successful. FALSE otherwise.
+
+ In the default configuration, the adatper has FCS inclusion turned on. The MAC Frame Check Sequence is 4 bytes
+ and is located at the end of the 802.11 packet, with both AIRPCAP_LT_802_11 and AIRPCAP_LT_802_11_PLUS_RADIO
+ link types.
+ When the FCS inclusion is turned on, and if the link type is AIRPCAP_LT_802_11_PLUS_RADIO, the radiotap header
+ that precedes each frame has two additional fields at the end: Padding and FCS. These two fields are not present
+ when FCS inclusion is off.
+*/
+BOOL AirpcapGetFcsPresence(PAirpcapHandle AdapterHandle, PBOOL PIsFcsPresent);
+
+/*!
+ \brief Configures the adapter to accept or drop frames with an incorrect Frame Check sequence (FCS).
+ \param AdapterHandle Handle to the adapter.
+ \param ValidationType The type of validation the driver will perform. See the documentation of \ref AirpcapValidationType for details.
+ \return TRUE on success.
+
+ \note By default, the driver is configured in \ref AIRPCAP_VT_ACCEPT_EVERYTHING mode.
+*/
+BOOL AirpcapSetFcsValidation(PAirpcapHandle AdapterHandle, AirpcapValidationType ValidationType);
+
+/*!
+ \brief Checks if the specified adapter is configured to capture frames with incorrect an incorrect Frame Check Sequence (FCS).
+ \param AdapterHandle Handle to the adapter.
+ \param ValidationType Pointer to a user supplied variable that will contain the type of validation the driver will perform. See the documentation of \ref AirpcapValidationType for details.
+ \return TRUE if the operation is succesful. FALSE otherwise.
+
+ \note By default, the driver is configured in \ref AIRPCAP_VT_ACCEPT_EVERYTHING mode.
+*/
+BOOL AirpcapGetFcsValidation(PAirpcapHandle AdapterHandle, PAirpcapValidationType ValidationType);
+
+/*!
+ \brief Set the list of decryption keys that the driver is going to use with the specified device.
+ \param AdapterHandle Handle an open adapter instance.
+ \param KeysCollection Pointer to a \ref PAirpcapKeysCollection structure that contains the keys to be set in the driver.
+ \return TRUE if the operation is successful. FALSE otherwise.
+
+ The AirPcap driver is able to use a set of decryption keys to decrypt the traffic transmitted on a specific SSID. If one of the
+ keys corresponds to the one the frame has been encrypted with, the driver will perform decryption and return the cleartext frames
+ to the application.
+ The driver supports, for every device, multiple keys at the same time.
+
+ At this time, the only supported decryption method is WEP.
+
+ The configured decryption keys are device-specific: they will not be used by other airpcap devices besides the specified one.
+
+ The keys are applied to the packets in the same order they appear in the KeysCollection structure until the packet is
+ correctly decrypted, therefore putting frequently used keys at the beginning of the structure improves performance.
+
+ \note: this is a Device-related function: when you change the channel from an open capture instance, the change will be
+ immediately reflected on all the other capture instances.
+*/
+BOOL AirpcapSetDeviceKeys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection);
+
+/*!
+ \brief Returns the list of decryption keys in the driver that are currently associated with the specified device
+ \param AdapterHandle Handle to an open adapter instance.
+ \param KeysCollection User-allocated PAirpcapKeysCollection structure that will be filled with the keys.
+ \param PKeysCollectionSize \b IN: pointer to a user-allocated variable that contains the length of the KeysCollection structure, in bytes.
+ \b OUT: amount of data moved by the driver in the buffer pointed by KeysBuffer, in bytes.
+ \return TRUE if the operation is succesful. If an error occurs, the return value is FALSE and KeysCollectionSize is zero.
+ If the provided buffer is too small to contain the keys, the return value is FALSE and KeysCollectionSize contains the
+ needed KeysCollection length, in bytes. If the device doesn't have any decryption key configured, the return value is TRUE, and
+ KeysCollectionSize will be zero.
+
+ This function returns the list of decryption keys in the driver that are associated with the specified device.
+ The AirPcap driver is able to use a set of decryption keys to decrypt the traffic transmitted on a specific SSID. If one of the
+ keys corresponds to the one the frame has been encrypted with, the driver will perform decryption and return the cleartext frames
+ to the application.
+ The driver supports, for every device, multiple keys at the same time.
+
+ The configured decryption keys are device-specific, therefore AirpcapGetDeviceKeys() will return a different set of keys
+ when called on different devices.
+
+ At this time, the only supported decryption method is WEP.
+
+ \note: this is a Device-related function: when you change the channel from an open capture instance, the change will be
+ immediately reflected on all the other capture instances.
+*/
+BOOL AirpcapGetDeviceKeys(PAirpcapHandle AdapterHandle, PAirpcapKeysCollection KeysCollection, PUINT PKeysCollectionSize);
+
+/*!
+ \brief Turns on or off the decryption of the incoming frames
+ \param AdapterHandle Handle to the adapter.
+ \param ValidationType Either \ref AIRPCAP_DECRYPTION_ON or \ref AIRPCAP_DECRYPTION_OFF
+ \return TRUE on success.
+
+ The decryption keys can be configured with the \ref AirpcapSetDeviceKeys() function.
+ \note By default, the driver is configured with \ref AIRPCAP_DECRYPTION_ON.
+*/
+BOOL AirpcapSetDecryptionState(PAirpcapHandle AdapterHandle, AirpcapDecryptionState Enable);
+
+/*!
+ \brief Tells if this open instance is configured to perform the decryption of the incoming frames
+ \param AdapterHandle Handle to the adapter.
+ \param ValidationType Pointer to a user supplied variable that will contain the decryption configuration. See \ref PAirpcapDecryptionState for details.
+ \return TRUE if the operation is succesful. FALSE otherwise.
+
+ The decryption keys can be configured with the \ref AirpcapSetDeviceKeys() function.
+ \note By default, the driver is configured with \ref AIRPCAP_DECRYPTION_ON.
+*/
+BOOL AirpcapGetDecryptionState(PAirpcapHandle AdapterHandle, PAirpcapDecryptionState PEnable);
+
+/*!
+ \brief Set the radio channel of a device
+ \param AdapterHandle Handle to the adapter.
+ \param Channel the new channel to set.
+ \return TRUE on success.
+
+ Valid channels are in the range 1-14. The default channel setting is 6.
+
+ \note: this is a Device-related function: when you change the channel from an open capture instance, the change will be
+ immediately reflected on all the other capture instances.
+*/
+BOOL AirpcapSetDeviceChannel(PAirpcapHandle AdapterHandle, UINT Channel);
+
+/*!
+ \brief Get the radio channel of a device
+ \param AdapterHandle Handle to the adapter.
+ \param PChannel Pointer to a user-supplied variable into which the function will copy the currently configured radio channel.
+ \return TRUE on success.
+
+ Valid channels are in the range 1-14. The default channel setting is 6.
+
+ \note: this is a Device-related function: when you change the channel from an open capture instance, the change will be
+ immediately reflected on all the other capture instances.
+*/
+BOOL AirpcapGetDeviceChannel(PAirpcapHandle AdapterHandle, PUINT PChannel);
+
+/*!
+ \brief Set the size of the kernel packet buffer for this adapter
+ \param AdapterHandle Handle to the adapter.
+ \param BufferSize New size, in bytes.
+ \return TRUE on success.
+
+ Every AirPcap open instance has an associated kernel buffer, whose default size is 1 Mbyte.
+ This function can be used to change the size of this buffer, and can be called at any time.
+ A bigger kernel buffer size decreases the risk of dropping packets during network bursts or when the
+ application is busy, at the cost of higher kernel memory usage.
+
+ \note: don't use this function unless you know what you are doing. Due to chaching issues and bigger non-paged
+ memory consumption, Bigger buffer sizes can decrease the capture performace instead of improving it.
+*/
+BOOL AirpcapSetKernelBuffer(PAirpcapHandle AdapterHandle, UINT BufferSize);
+
+/*!
+ \brief Get the size of the kernel packet buffer for this adapter
+ \param AdapterHandle Handle to the adapter.
+ \param PSizeBytes User-allocated variable that will be filled with the size of the kernel buffer.
+ \return TRUE on success.
+
+ Every AirPcap open instance has an associated kernel buffer, whose default size is 1 Mbyte.
+ This function can be used to get the size of this buffer.
+*/
+BOOL AirpcapGetKernelBufferSize(PAirpcapHandle AdapterHandle, PUINT PSizeBytes);
+
+/*!
+ \brief Saves the configuration of the specified adapter in the registry, so that it becomes the default for this adapter.
+ \param AdapterHandle Handle to the adapter.
+ \return TRUE on success. FALSE on failure.
+
+ Almost all the AirPcap calls that modify the configuration (\ref AirpcapSetLinkType(), \ref AirpcapSetFcsPresence(),
+ \ref AirpcapSetFcsValidation(), \ref AirpcapSetKernelBuffer(), \ref AirpcapSetMinToCopy())
+ affect only the referenced AirPcap open instance. This means that if you do another \ref AirpcapOpen() on the same
+ adapter, the configuration changes will not be remembered, and the new adapter handle will have default configuration
+ settings.
+
+ Exceptions to this rule are the \ref AirpcapSetDeviceChannel() and \ref AirpcapSetDeviceKeys() functions: a channel change is
+ reflected on all the open instances, and remembered until the next call to \ref AirpcapSetDeviceChannel(), until the adapter
+ is unplugged, or until the machine is powered off. Same thing for the configuration of the WEP keys.
+
+ AirpcapStoreCurConfigAsAdapterDefault() stores the configuration of the give open instance as the default for the adapter:
+ all the instances opened in the future will have the same configuration that this adapter currently has.
+ The configuration is stored in the registry, therefore it is remembered even when the adapter is unplugged or the
+ machine is turned off. However, an adapter doesn't bring its configuration with it from machine to machine.
+
+ the configuration information saved in the registry includes the following parameters:
+ - channel
+ - kernel buffer size
+ - mintocopy
+ - link type
+ - CRC presence
+ - Encryption keys
+ - Encryption Enabled/Disabled state
+
+ The configuration is adapter-specific. This means that changing the configuration of an adapter
+ doesn't modify the one of the other adapters that are currently used or that will be used in the future.
+
+ \note AirpcapStoreCurConfigAsAdapterDefault() must have exclusive access to the adapter -- it
+ will fail if more than one AirPcap handle is opened at the same time for this adapter.
+ AirpcapStoreCurConfigAsAdapterDefault() needs administrator privileges. It will fail if the calling user
+ is not a local machine administrator.
+*/
+BOOL AirpcapStoreCurConfigAsAdapterDefault(PAirpcapHandle AdapterHandle);
+
+/*!
+ \brief Set the BPF kernel filter for an adapter
+ \param AdapterHandle Handle to the adapter.
+ \param Instructions pointer to the first BPF instruction in the array. Corresponds to the bf_insns
+ in a bpf_program structure (see the WinPcap documentation at http://www.winpcap.org/devel.htm).
+ \param Len Number of instructions in the array pointed by the previous field. Corresponds to the bf_len in
+ a a bpf_program structure (see the WinPcap documentation at http://www.winpcap.org/devel.htm).
+ \return TRUE on success.
+
+ The AirPcap driver is able to perform kernel-level filtering using the standard BPF pseudo-machine format. You can read
+ the WinPcap documentation at http://www.winpcap.org/devel.htm for more details on the BPF filtering mechaism.
+
+ A filter can be automatically created by using the pcap_compile() function of the WinPcap API. This function
+ converts a human readable text expression with the tcpdump/libpcap syntax into a BPF program.
+ If your program doesn't link wpcap, but you need to generate the code for a particular filter, you can run WinDump
+ with the -d or -dd or -ddd flags to obtain the pseudocode.
+
+*/
+BOOL AirpcapSetFilter(PAirpcapHandle AdapterHandle, PVOID Instructions, UINT Len);
+
+/*!
+ \brief Return the MAC address of an adapter.
+ \param AdapterHandle Handle to the adapter.
+ \param PMacAddress Pointer to a user allocated MAC address.
+ The size of this buffer needs to be at least 6 bytes.
+ \return TRUE on success.
+*/
+BOOL AirpcapGetMacAddress(PAirpcapHandle AdapterHandle, PAirpcapMacAddress PMacAddress);
+
+/*!
+ \brief Set the mintocopy parameter for an open adapter
+ \param AdapterHandle Handle to the adapter.
+ \param MinToCopy is the mintocopy size in bytes.
+ \return TRUE on success.
+
+ When the number of bytes in the kernel buffer changes from less than mintocopy bytes to greater than or equal to mintocopy bytes,
+ the read event is signalled (see \ref AirpcapGetReadEvent()). A high value for mintocopy results in poor responsiveness since the
+ driver may signal the application "long" after the arrival of the packet. And a high value results in low CPU loading
+ by minimizing the number of user/kernel context switches.
+ A low MinToCopy results in good responsiveness since the driver will signal the application close to the arrival time of
+ the packet. This has higher CPU loading over the first approach.
+*/
+BOOL AirpcapSetMinToCopy(PAirpcapHandle AdapterHandle, UINT MinToCopy);
+
+/*!
+ \brief Gets an event that is signaled when that is signalled when packets are available in the kernel buffer (see \ref AirpcapSetMinToCopy()).
+ \param AdapterHandle Handle to the adapter.
+ \param PReadEvent Pointer to a user-supplied handle that in which the read event will be copied.
+ \return TRUE on success.
+
+ \note the event is signalled when at least mintocopy bytes are present in the kernel buffer (see \ref AirpcapSetMinToCopy()).
+ This event can be used by WaitForSingleObject() and WaitForMultipleObjects() to create blocking behavior when reading
+ packets from one or more adapters (see \ref AirpcapRead()).
+*/
+BOOL AirpcapGetReadEvent(PAirpcapHandle AdapterHandle, HANDLE* PReadEvent);
+
+/*!
+ \brief Fills a user-provided buffer with zero or more packets that have been captured on the referenced adapter.
+ \param AdapterHandle Handle to the adapter.
+ \param Buffer pointer to the buffer that will be filled with captured packets.
+ \param BufSize size of the input buffer that will contain the packets, in bytes.
+ \param PReceievedBytes Pointer to a user supplied variable that will receive the number of bytes copied by AirpcapRead.
+ Can be smaller than BufSize.
+ \return TRUE on success.
+
+ 802.11 frames are returned by the driver in buffers. Every 802.11 frame in the buffer is preceded by a \ref AirpcapBpfHeader structure.
+ The suggested way to use an AirPcap adapter is through the pcap API exported by wpcap.dll. If this is not
+ possible, the Capture_radio and Capture_no_radio examples in the AirPcap developer's pack show how to properly decode the
+ packets in the read buffer returned by AirpcapRead().
+
+ \note this function is NOT blocking. Blocking behavior can be obtained using the event returned
+ by \ref AirpcapGetReadEvent(). See also \ref AirpcapSetMinToCopy().
+*/
+BOOL AirpcapRead(PAirpcapHandle AdapterHandle, PBYTE Buffer, UINT BufSize, PUINT PReceievedBytes);
+
+/*!
+ \brief Get per-adapter WinPcap-compatible capture statistics.
+ \param AdapterHandle Handle to the adapter.
+ \param PStats pointer to a user-allocated AirpcapStats structure that will be filled with statistical information.
+ \return TRUE on success.
+*/
+BOOL AirpcapGetStats(PAirpcapHandle AdapterHandle, PAirpcapStats PStats);
+
+/*!
+ \brief Get the number of LEDs the referenced adapter has available.
+ \param AdapterHandle Handle to the adapter.
+ \param NumberOfLeds Number of LEDs available on this adapter.
+ \return TRUE on success.
+*/
+BOOL AirpcapGetLedsNumber(PAirpcapHandle AdapterHandle, PUINT NumberOfLeds);
+
+/*!
+ \brief Turn on one of the adapter's LEDs.
+ \param AdapterHandle Handle to the adapter.
+ \param LedNumber zero-based identifier of the LED to turn on.
+ \return TRUE on success.
+*/
+BOOL AirpcapTurnLedOn(PAirpcapHandle AdapterHandle, UINT LedNumber);
+
+/*!
+ \brief Turn off one of the adapter's LEDs.
+ \param AdapterHandle Handle to the adapter.
+ \param LedNumber zero-based identifier of the LED to turn off.
+ \return TRUE on success.
+*/
+BOOL AirpcapTurnLedOff(PAirpcapHandle AdapterHandle, UINT LedNumber);
+
+/*@}*/
+
+#endif /* __AIRPCAP_DRIVER__ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !defined(AIRPCAP_H__EAE405F5_0171_9592_B3C2_C19EC426AD34__INCLUDED_) */