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// SoftEther VPN Source Code
// Cedar Communication Module
//
// SoftEther VPN Server, Client and Bridge are free software under GPLv2.
//
// Copyright (c) 2012-2014 Daiyuu Nobori.
// Copyright (c) 2012-2014 SoftEther VPN Project, University of Tsukuba, Japan.
// Copyright (c) 2012-2014 SoftEther Corporation.
//
// All Rights Reserved.
//
// http://www.softether.org/
//
// Author: Daiyuu Nobori
// Comments: Tetsuo Sugiyama, Ph.D.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// version 2 as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License version 2
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// 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.
//
// THE LICENSE AGREEMENT IS ATTACHED ON THE SOURCE-CODE PACKAGE
// AS "LICENSE.TXT" FILE. READ THE TEXT FILE IN ADVANCE TO USE 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 IT IN OTHER COUNTRIES. IMPORTING THIS
// SOFTWARE INTO OTHER COUNTRIES IS AT YOUR OWN RISK. SOME COUNTRIES
// PROHIBIT ENCRYPTED COMMUNICATIONS. USING THIS SOFTWARE IN OTHER
// COUNTRIES MIGHT BE RESTRICTED.
//
//
// 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.
// Nat.h
// Header of Nat.c
#ifndef NAT_H
#define NAT_H
// Constants
#define NAT_CONFIG_FILE_NAME "@vpn_router.config" // NAT configuration file
#define DEFAULT_NAT_ADMIN_PORT 2828 // Default port number for management
#define NAT_ADMIN_PORT_LISTEN_INTERVAL 1000 // Interval for trying to open a port for management
#define NAT_FILE_SAVE_INTERVAL (30 * 1000) // Interval to save
// NAT object
struct NAT
{
LOCK *lock; // Lock
UCHAR HashedPassword[SHA1_SIZE]; // Administrative password
VH_OPTION Option; // Option
CEDAR *Cedar; // Cedar
UINT AdminPort; // Management port number
bool Online; // Online flag
VH *Virtual; // Virtual host object
CLIENT_OPTION *ClientOption; // Client Option
CLIENT_AUTH *ClientAuth; // Client authentication data
CFG_RW *CfgRw; // Config file R/W
THREAD *AdminAcceptThread; // Management connection reception thread
SOCK *AdminListenSock; // Management port socket
EVENT *HaltEvent; // Halting event
volatile bool Halt; // Halting flag
LIST *AdminList; // Management thread list
X *AdminX; // Server certificate for management
K *AdminK; // Server private key for management
SNAT *SecureNAT; // SecureNAT object
};
// NAT management connection
struct NAT_ADMIN
{
NAT *Nat; // NAT
SOCK *Sock; // Socket
THREAD *Thread; // Thread
};
// RPC_DUMMY
struct RPC_DUMMY
{
UINT DummyValue;
};
// RPC_NAT_STATUS
struct RPC_NAT_STATUS
{
char HubName[MAX_HUBNAME_LEN + 1]; // HUB name
UINT NumTcpSessions; // Number of TCP sessions
UINT NumUdpSessions; // Ntmber of UDP sessions
UINT NumIcmpSessions; // Nymber of ICMP sessions
UINT NumDnsSessions; // Number of DNS sessions
UINT NumDhcpClients; // Number of DHCP clients
bool IsKernelMode; // Whether kernel mode
};
// RPC_NAT_INFO *
struct RPC_NAT_INFO
{
char NatProductName[128]; // Server product name
char NatVersionString[128]; // Server version string
char NatBuildInfoString[128]; // Server build information string
UINT NatVerInt; // Server version integer value
UINT NatBuildInt; // Server build number integer value
char NatHostName[MAX_HOST_NAME_LEN + 1]; // Server host name
OS_INFO OsInfo; // OS information
MEMINFO MemInfo; // Memory information
};
// RPC_ENUM_NAT_ITEM
struct RPC_ENUM_NAT_ITEM
{
UINT Id; // ID
UINT Protocol; // Protocol
UINT SrcIp; // Source IP address
char SrcHost[MAX_HOST_NAME_LEN + 1]; // Source host name
UINT SrcPort; // Source port number
UINT DestIp; // Destination IP address
char DestHost[MAX_HOST_NAME_LEN + 1]; // Destination host name
UINT DestPort; // Destination port number
UINT64 CreatedTime; // Connection time
UINT64 LastCommTime; // Last communication time
UINT64 SendSize; // Transmission size
UINT64 RecvSize; // Receive size
UINT TcpStatus; // TCP state
};
// RPC_ENUM_NAT *
struct RPC_ENUM_NAT
{
char HubName[MAX_HUBNAME_LEN + 1]; // HUB name
UINT NumItem; // Number of items
RPC_ENUM_NAT_ITEM *Items; // Item
};
// RPC_ENUM_DHCP_ITEM
struct RPC_ENUM_DHCP_ITEM
{
UINT Id; // ID
UINT64 LeasedTime; // Lease time
UINT64 ExpireTime; // Expiration date
UCHAR MacAddress[6]; // MAC address
UCHAR Padding[2]; // Padding
UINT IpAddress; // IP address
UINT Mask; // Subnet mask
char Hostname[MAX_HOST_NAME_LEN + 1]; // Host name
};
// RPC_ENUM_DHCP *
struct RPC_ENUM_DHCP
{
char HubName[MAX_HUBNAME_LEN + 1]; // HUB name
UINT NumItem; // Number of items
RPC_ENUM_DHCP_ITEM *Items; // Item
};
// Function prototype
NAT *NiNewNat();
NAT *NiNewNatEx(SNAT *snat, VH_OPTION *o);
void NiFreeNat(NAT *n);
void NiInitConfig(NAT *n);
void NiFreeConfig(NAT *n);
void NiInitDefaultConfig(NAT *n);
void NiSetDefaultVhOption(NAT *n, VH_OPTION *o);
void NiClearUnsupportedVhOptionForDynamicHub(VH_OPTION *o, bool initial);
void NiWriteConfig(NAT *n);
void NiWriteVhOption(NAT *n, FOLDER *root);
void NiWriteVhOptionEx(VH_OPTION *o, FOLDER *root);
void NiWriteClientData(NAT *n, FOLDER *root);
void NiLoadVhOption(NAT *n, FOLDER *root);
void NiLoadVhOptionEx(VH_OPTION *o, FOLDER *root);
bool NiLoadConfig(NAT *n, FOLDER *root);
void NiLoadClientData(NAT *n, FOLDER *root);
void NiInitAdminAccept(NAT *n);
void NiFreeAdminAccept(NAT *n);
void NiListenThread(THREAD *thread, void *param);
void NiAdminThread(THREAD *thread, void *param);
void NiAdminMain(NAT *n, SOCK *s);
PACK *NiRpcServer(RPC *r, char *name, PACK *p);
RPC *NatAdminConnect(CEDAR *cedar, char *hostname, UINT port, void *hashed_password, UINT *err);
void NatAdminDisconnect(RPC *r);
void NtStartNat();
void NtStopNat();
void NtInit();
void NtFree();
UINT NtOnline(NAT *n, RPC_DUMMY *t);
UINT NtOffline(NAT *n, RPC_DUMMY *t);
UINT NtSetHostOption(NAT *n, VH_OPTION *t);
UINT NtGetHostOption(NAT *n, VH_OPTION *t);
UINT NtSetClientConfig(NAT *n, RPC_CREATE_LINK *t);
UINT NtGetClientConfig(NAT *n, RPC_CREATE_LINK *t);
UINT NtGetStatus(NAT *n, RPC_NAT_STATUS *t);
UINT NtGetInfo(NAT *n, RPC_NAT_INFO *t);
UINT NtEnumNatList(NAT *n, RPC_ENUM_NAT *t);
UINT NtEnumDhcpList(NAT *n, RPC_ENUM_DHCP *t);
UINT NtSetPassword(NAT *n, RPC_SET_PASSWORD *t);
UINT NcOnline(RPC *r, RPC_DUMMY *t);
UINT NcOffline(RPC *r, RPC_DUMMY *t);
UINT NcSetHostOption(RPC *r, VH_OPTION *t);
UINT NcGetHostOption(RPC *r, VH_OPTION *t);
UINT NcSetClientConfig(RPC *r, RPC_CREATE_LINK *t);
UINT NcGetClientConfig(RPC *r, RPC_CREATE_LINK *t);
UINT NcGetStatus(RPC *r, RPC_NAT_STATUS *t);
UINT NcGetInfo(RPC *r, RPC_NAT_INFO *t);
UINT NcEnumNatList(RPC *r, RPC_ENUM_NAT *t);
UINT NcEnumDhcpList(RPC *r, RPC_ENUM_DHCP *t);
UINT NcSetPassword(RPC *r, RPC_SET_PASSWORD *t);
void InRpcEnumDhcp(RPC_ENUM_DHCP *t, PACK *p);
void OutRpcEnumDhcp(PACK *p, RPC_ENUM_DHCP *t);
void FreeRpcEnumDhcp(RPC_ENUM_DHCP *t);
void InRpcEnumNat(RPC_ENUM_NAT *t, PACK *p);
void OutRpcEnumNat(PACK *p, RPC_ENUM_NAT *t);
void FreeRpcEnumNat(RPC_ENUM_NAT *t);
void InRpcNatInfo(RPC_NAT_INFO *t, PACK *p);
void OutRpcNatInfo(PACK *p, RPC_NAT_INFO *t);
void FreeRpcNatInfo(RPC_NAT_INFO *t);
void InRpcNatStatus(RPC_NAT_STATUS *t, PACK *p);
void OutRpcNatStatus(PACK *p, RPC_NAT_STATUS *t);
void FreeRpcNatStatus(RPC_NAT_STATUS *t);
void InVhOption(VH_OPTION *t, PACK *p);
void OutVhOption(PACK *p, VH_OPTION *t);
void InRpcDummy(RPC_DUMMY *t, PACK *p);
void OutRpcDummy(PACK *p, RPC_DUMMY *t);
#endif // NAT_H
// Developed by SoftEther VPN Project at University of Tsukuba in Japan.
// Department of Computer Science has dozens of overly-enthusiastic geeks.
// Join us: http://www.tsukuba.ac.jp/english/admission/
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