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// SoftEther VPN Source Code
// Cedar Communication Module
//
// SoftEther VPN Server, Client and Bridge are free software under GPLv2.
//
// Copyright (c) Daiyuu Nobori, Ph.D..
// Copyright (c) SoftEther VPN Project, University of Tsukuba, Japan.
// Copyright (c) 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 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.
//
//
// 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.
// IPsec.h
// Header of IPsec.c
#ifndef IPSEC_H
#define IPSEC_H
//// Constants
// UDP port number
#define IPSEC_PORT_L2TP 1701 // L2TP
#define IPSEC_PORT_IPSEC_ISAKMP 500 // ISAKMP
#define IPSEC_PORT_IPSEC_ESP_UDP 4500 // IPsec ESP over UDP
#define IPSEC_PORT_IPSEC_ESP_RAW MAKE_SPECIAL_PORT(50) // Raw mode ESP Protocol No: 50
#define IPSEC_PORT_IPSEC_ESP_RAW_WPF MAKE_SPECIAL_PORT(52) // Raw mode ESP Protocol No: 52 (WPF)
#define IPSEC_PORT_L2TPV3_VIRTUAL 1000001 // L2TPv3 virtual port
// IP protocol number
#define IPSEC_IP_PROTO_ETHERIP IP_PROTO_ETHERIP // EtherIP
#define IPSEC_IP_PROTO_L2TPV3 IP_PROTO_L2TPV3 // L2TPv3
// WFP tag
#define WFP_ESP_PACKET_TAG_1 0x19841117
#define WFP_ESP_PACKET_TAG_2 0x1accafe1
// Monitoring interval of OS service
#define IPSEC_CHECK_OS_SERVICE_INTERVAL_INITIAL 1024
#define IPSEC_CHECK_OS_SERVICE_INTERVAL_MAX (5 * 60 * 1000)
// Default IPsec pre-shared key
#define IPSEC_DEFAULT_SECRET "vpn"
//// Type
// List of services provided by IPsec server
struct IPSEC_SERVICES
{
bool L2TP_Raw; // Raw L2TP
bool L2TP_IPsec; // L2TP over IPsec
bool EtherIP_IPsec; // EtherIP over IPsec
char IPsec_Secret[MAX_SIZE]; // IPsec pre-shared key
char L2TP_DefaultHub[MAX_SIZE]; // Default Virtual HUB name for L2TP connection
};
// EtherIP key list entry
struct ETHERIP_ID
{
char Id[MAX_SIZE]; // ID
char HubName[MAX_HUBNAME_LEN + 1]; // Virtual HUB name
char UserName[MAX_USERNAME_LEN + 1]; // User name
char Password[MAX_USERNAME_LEN + 1]; // Password
};
// IPsec server
struct IPSEC_SERVER
{
CEDAR *Cedar;
UDPLISTENER *UdpListener;
bool Halt;
bool NoMoreChangeSettings;
LOCK *LockSettings;
IPSEC_SERVICES Services;
L2TP_SERVER *L2TP; // L2TP server
IKE_SERVER *Ike; // IKE server
LIST *EtherIPIdList; // EtherIP setting list
UINT EtherIPIdListSettingVerNo; // EtherIP setting list version number
THREAD *OsServiceCheckThread; // OS Service monitoring thread
EVENT *OsServiceCheckThreadEvent; // Event for OS Service monitoring thread
IPSEC_WIN7 *Win7; // Helper module for Windows Vista / 7
bool Check_LastEnabledStatus;
bool HostIPAddressListChanged;
bool OsServiceStoped;
};
//// Function prototype
IPSEC_SERVER *NewIPsecServer(CEDAR *cedar);
void FreeIPsecServer(IPSEC_SERVER *s);
void IPsecServerUdpPacketRecvProc(UDPLISTENER *u, LIST *packet_list);
void IPsecServerSetServices(IPSEC_SERVER *s, IPSEC_SERVICES *sl);
void IPsecNormalizeServiceSetting(IPSEC_SERVER *s);
void IPsecServerGetServices(IPSEC_SERVER *s, IPSEC_SERVICES *sl);
void IPsecProcPacket(IPSEC_SERVER *s, UDPPACKET *p);
int CmpEtherIPId(void *p1, void *p2);
bool SearchEtherIPId(IPSEC_SERVER *s, ETHERIP_ID *id, char *id_str);
void AddEtherIPId(IPSEC_SERVER *s, ETHERIP_ID *id);
bool DeleteEtherIPId(IPSEC_SERVER *s, char *id_str);
void IPsecOsServiceCheckThread(THREAD *t, void *p);
bool IPsecCheckOsService(IPSEC_SERVER *s);
void IPSecSetDisable(bool b);
#endif // IPSEC_H
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