// SoftEther VPN Source Code - Stable Edition Repository
// Cedar Communication Module
// 
// SoftEther VPN Server, Client and Bridge are free software under the Apache License, Version 2.0.
// 
// Copyright (c) Daiyuu Nobori.
// Copyright (c) SoftEther VPN Project, University of Tsukuba, Japan.
// Copyright (c) SoftEther Corporation.
// Copyright (c) all contributors on SoftEther VPN project in GitHub.
// 
// All Rights Reserved.
// 
// http://www.softether.org/
// 
// This stable branch is officially managed by Daiyuu Nobori, the owner of SoftEther VPN Project.
// Pull requests should be sent to the Developer Edition Master Repository on https://github.com/SoftEtherVPN/SoftEtherVPN
// 
// License: The Apache License, Version 2.0
// https://www.apache.org/licenses/LICENSE-2.0
// 
// DISCLAIMER
// ==========
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// 
// THIS SOFTWARE IS DEVELOPED IN JAPAN, AND DISTRIBUTED FROM JAPAN, UNDER
// JAPANESE LAWS. YOU MUST AGREE IN ADVANCE TO USE, COPY, MODIFY, MERGE, PUBLISH,
// DISTRIBUTE, SUBLICENSE, AND/OR SELL COPIES OF THIS SOFTWARE, THAT ANY
// JURIDICAL DISPUTES WHICH ARE CONCERNED TO THIS SOFTWARE OR ITS CONTENTS,
// AGAINST US (SOFTETHER PROJECT, SOFTETHER CORPORATION, DAIYUU NOBORI OR OTHER
// SUPPLIERS), OR ANY JURIDICAL DISPUTES AGAINST US WHICH ARE CAUSED BY ANY KIND
// OF USING, COPYING, MODIFYING, MERGING, PUBLISHING, DISTRIBUTING, SUBLICENSING,
// AND/OR SELLING COPIES OF THIS SOFTWARE SHALL BE REGARDED AS BE CONSTRUED AND
// CONTROLLED BY JAPANESE LAWS, AND YOU MUST FURTHER CONSENT TO EXCLUSIVE
// JURISDICTION AND VENUE IN THE COURTS SITTING IN TOKYO, JAPAN. YOU MUST WAIVE
// ALL DEFENSES OF LACK OF PERSONAL JURISDICTION AND FORUM NON CONVENIENS.
// PROCESS MAY BE SERVED ON EITHER PARTY IN THE MANNER AUTHORIZED BY APPLICABLE
// LAW OR COURT RULE.
// 
// USE ONLY IN JAPAN. DO NOT USE THIS SOFTWARE IN ANOTHER COUNTRY UNLESS YOU HAVE
// A CONFIRMATION THAT THIS SOFTWARE DOES NOT VIOLATE ANY CRIMINAL LAWS OR CIVIL
// RIGHTS IN THAT PARTICULAR COUNTRY. USING THIS SOFTWARE IN OTHER COUNTRIES IS
// COMPLETELY AT YOUR OWN RISK. THE SOFTETHER VPN PROJECT HAS DEVELOPED AND
// DISTRIBUTED THIS SOFTWARE TO COMPLY ONLY WITH THE JAPANESE LAWS AND EXISTING
// CIVIL RIGHTS INCLUDING PATENTS WHICH ARE SUBJECTS APPLY IN JAPAN. OTHER
// COUNTRIES' LAWS OR CIVIL RIGHTS ARE NONE OF OUR CONCERNS NOR RESPONSIBILITIES.
// WE HAVE NEVER INVESTIGATED ANY CRIMINAL REGULATIONS, CIVIL LAWS OR
// INTELLECTUAL PROPERTY RIGHTS INCLUDING PATENTS IN ANY OF OTHER 200+ COUNTRIES
// AND TERRITORIES. BY NATURE, THERE ARE 200+ REGIONS IN THE WORLD, WITH
// DIFFERENT LAWS. IT IS IMPOSSIBLE TO VERIFY EVERY COUNTRIES' LAWS, REGULATIONS
// AND CIVIL RIGHTS TO MAKE THE SOFTWARE COMPLY WITH ALL COUNTRIES' LAWS BY THE
// PROJECT. EVEN IF YOU WILL BE SUED BY A PRIVATE ENTITY OR BE DAMAGED BY A
// PUBLIC SERVANT IN YOUR COUNTRY, THE DEVELOPERS OF THIS SOFTWARE WILL NEVER BE
// LIABLE TO RECOVER OR COMPENSATE SUCH DAMAGES, CRIMINAL OR CIVIL
// RESPONSIBILITIES. NOTE THAT THIS LINE IS NOT LICENSE RESTRICTION BUT JUST A
// STATEMENT FOR WARNING AND DISCLAIMER.
// 
// READ AND UNDERSTAND THE 'WARNING.TXT' FILE BEFORE USING THIS SOFTWARE.
// SOME SOFTWARE PROGRAMS FROM THIRD PARTIES ARE INCLUDED ON THIS SOFTWARE WITH
// LICENSE CONDITIONS WHICH ARE DESCRIBED ON THE 'THIRD_PARTY.TXT' FILE.
// 
// 
// SOURCE CODE CONTRIBUTION
// ------------------------
// 
// Your contribution to SoftEther VPN Project is much appreciated.
// Please send patches to us through GitHub.
// Read the SoftEther VPN Patch Acceptance Policy in advance:
// http://www.softether.org/5-download/src/9.patch
// 
// 
// DEAR SECURITY EXPERTS
// ---------------------
// 
// If you find a bug or a security vulnerability please kindly inform us
// about the problem immediately so that we can fix the security problem
// to protect a lot of users around the world as soon as possible.
// 
// Our e-mail address for security reports is:
// softether-vpn-security [at] softether.org
// 
// Please note that the above e-mail address is not a technical support
// inquiry address. If you need technical assistance, please visit
// http://www.softether.org/ and ask your question on the users forum.
// 
// Thank you for your cooperation.
// 
// 
// NO MEMORY OR RESOURCE LEAKS
// ---------------------------
// 
// The memory-leaks and resource-leaks verification under the stress
// test has been passed before release this source code.


// VLanWin32.h
// Header of VLanWin32.c

#ifndef	VLANWIN32_H
#define	VLANWIN32_H

// Routing table tracking timer
#define	TRACKING_INTERVAL_INITIAL		444		// Initial
#define	TRACKING_INTERVAL_ADD			444		// Adding value
#define	TRACKING_INTERVAL_MAX			12345	// Maximum value
#define	TRACKING_INTERVAL_MAX_RC		87654	// Maximum value (OS which change detection mechanism enabled)


typedef void *HANDLE;

// Routing tracking state machine
struct ROUTE_TRACKING
{
	UINT VLanInterfaceId;
	ROUTE_ENTRY *RouteToServer;
	bool RouteToServerAlreadyExists;
	ROUTE_ENTRY *DefaultGatewayByVLan;
	ROUTE_ENTRY *VistaDefaultGateway1, *VistaDefaultGateway2, *VistaOldDefaultGatewayByVLan;
	ROUTE_ENTRY *RouteToDefaultDns;
	ROUTE_ENTRY *RouteToEight;
	ROUTE_ENTRY *RouteToNatTServer;
	ROUTE_ENTRY *RouteToRealServerGlobal;
	UINT64 NextTrackingTime;
	UINT64 NextTrackingTimeAdd;
	UINT64 NextRouteChangeCheckTime;
	UINT LastRoutingTableHash;
	QUEUE *DeletedDefaultGateway;
	UINT OldDefaultGatewayMetric;
	IP OldDnsServer;
	bool VistaAndUsingPPP;
	ROUTE_CHANGE *RouteChange;
};

// VLAN structure
struct VLAN
{
	volatile bool Halt;			// Halting flag
	bool Win9xMode;				// Windows 9x
	char *InstanceName;			// Instance name
	char *DeviceNameWin32;		// Win32 device name
	char *EventNameWin32;		// Win32 event name
	HANDLE Handle;				// Device driver file
	HANDLE Event;				// Handle of the event
	void *GetBuffer;			// Sent packet capturing buffer
	UINT CurrentPacketCount;	// Packet number to be read next
	void *PutBuffer;			// Buffer for writing received packet
	ROUTE_TRACKING *RouteState;	// Routing tracking state machine
};

// Instance list
struct INSTANCE_LIST
{
	UINT NumInstance;
	char **InstanceName;
};


// Function prototype
VLAN *NewVLan(char *instance_name, VLAN_PARAM *param);
void FreeVLan(VLAN *v);
CANCEL *VLanGetCancel(VLAN *v);
bool VLanGetNextPacket(VLAN *v, void **buf, UINT *size);
bool VLanGetPacketsFromDriver(VLAN *v);
bool VLanPutPacketsToDriver(VLAN *v);
bool VLanPutPacket(VLAN *v, void *buf, UINT size);

PACKET_ADAPTER *VLanGetPacketAdapter();
bool VLanPaInit(SESSION *s);
CANCEL *VLanPaGetCancel(SESSION *s);
UINT VLanPaGetNextPacket(SESSION *s, void **data);
bool VLanPaPutPacket(SESSION *s, void *data, UINT size);
void VLanPaFree(SESSION *s);

INSTANCE_LIST *GetInstanceList();
void FreeInstanceList(INSTANCE_LIST *n);
UINT GetInstanceId(char *name);

void RouteTrackingStart(SESSION *s);
void RouteTrackingStop(SESSION *s, ROUTE_TRACKING *t);
void RouteTrackingMain(SESSION *s);
void Win32ReleaseAllDhcp9x(bool wait);

void Win32GetWinVer(RPC_WINVER *v);

#endif	// VLANWIN32_H