mirror of
https://github.com/SoftEtherVPN/SoftEtherVPN.git
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206 lines
8.1 KiB
C
206 lines
8.1 KiB
C
// SoftEther VPN Source Code - Developer Edition Master Branch
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// Cedar Communication Module
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//
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// SoftEther VPN Server, Client and Bridge are free software under GPLv2.
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//
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// Copyright (c) Daiyuu Nobori.
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// Copyright (c) SoftEther VPN Project, University of Tsukuba, Japan.
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// Copyright (c) SoftEther Corporation.
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//
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// All Rights Reserved.
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//
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// http://www.softether.org/
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//
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// Author: Daiyuu Nobori, Ph.D.
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// Comments: Tetsuo Sugiyama, Ph.D.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// version 2 as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License version 2
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// THE LICENSE AGREEMENT IS ATTACHED ON THE SOURCE-CODE PACKAGE
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// AS "LICENSE.TXT" FILE. READ THE TEXT FILE IN ADVANCE TO USE THE SOFTWARE.
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//
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//
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// THIS SOFTWARE IS DEVELOPED IN JAPAN, AND DISTRIBUTED FROM JAPAN,
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// UNDER JAPANESE LAWS. YOU MUST AGREE IN ADVANCE TO USE, COPY, MODIFY,
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// MERGE, PUBLISH, DISTRIBUTE, SUBLICENSE, AND/OR SELL COPIES OF THIS
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// SOFTWARE, THAT ANY JURIDICAL DISPUTES WHICH ARE CONCERNED TO THIS
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// SOFTWARE OR ITS CONTENTS, AGAINST US (SOFTETHER PROJECT, SOFTETHER
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// CORPORATION, DAIYUU NOBORI OR OTHER SUPPLIERS), OR ANY JURIDICAL
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// DISPUTES AGAINST US WHICH ARE CAUSED BY ANY KIND OF USING, COPYING,
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// MODIFYING, MERGING, PUBLISHING, DISTRIBUTING, SUBLICENSING, AND/OR
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// SELLING COPIES OF THIS SOFTWARE SHALL BE REGARDED AS BE CONSTRUED AND
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// CONTROLLED BY JAPANESE LAWS, AND YOU MUST FURTHER CONSENT TO
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// EXCLUSIVE JURISDICTION AND VENUE IN THE COURTS SITTING IN TOKYO,
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// JAPAN. YOU MUST WAIVE ALL DEFENSES OF LACK OF PERSONAL JURISDICTION
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// AND FORUM NON CONVENIENS. PROCESS MAY BE SERVED ON EITHER PARTY IN
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// THE MANNER AUTHORIZED BY APPLICABLE LAW OR COURT RULE.
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//
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// USE ONLY IN JAPAN. DO NOT USE THIS SOFTWARE IN ANOTHER COUNTRY UNLESS
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// YOU HAVE A CONFIRMATION THAT THIS SOFTWARE DOES NOT VIOLATE ANY
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// CRIMINAL LAWS OR CIVIL RIGHTS IN THAT PARTICULAR COUNTRY. USING THIS
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// SOFTWARE IN OTHER COUNTRIES IS COMPLETELY AT YOUR OWN RISK. THE
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// SOFTETHER VPN PROJECT HAS DEVELOPED AND DISTRIBUTED THIS SOFTWARE TO
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// COMPLY ONLY WITH THE JAPANESE LAWS AND EXISTING CIVIL RIGHTS INCLUDING
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// PATENTS WHICH ARE SUBJECTS APPLY IN JAPAN. OTHER COUNTRIES' LAWS OR
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// CIVIL RIGHTS ARE NONE OF OUR CONCERNS NOR RESPONSIBILITIES. WE HAVE
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// NEVER INVESTIGATED ANY CRIMINAL REGULATIONS, CIVIL LAWS OR
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// INTELLECTUAL PROPERTY RIGHTS INCLUDING PATENTS IN ANY OF OTHER 200+
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// COUNTRIES AND TERRITORIES. BY NATURE, THERE ARE 200+ REGIONS IN THE
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// WORLD, WITH DIFFERENT LAWS. IT IS IMPOSSIBLE TO VERIFY EVERY
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// COUNTRIES' LAWS, REGULATIONS AND CIVIL RIGHTS TO MAKE THE SOFTWARE
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// COMPLY WITH ALL COUNTRIES' LAWS BY THE PROJECT. EVEN IF YOU WILL BE
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// SUED BY A PRIVATE ENTITY OR BE DAMAGED BY A PUBLIC SERVANT IN YOUR
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// COUNTRY, THE DEVELOPERS OF THIS SOFTWARE WILL NEVER BE LIABLE TO
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// RECOVER OR COMPENSATE SUCH DAMAGES, CRIMINAL OR CIVIL
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// RESPONSIBILITIES. NOTE THAT THIS LINE IS NOT LICENSE RESTRICTION BUT
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// JUST A STATEMENT FOR WARNING AND DISCLAIMER.
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//
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//
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// SOURCE CODE CONTRIBUTION
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// ------------------------
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//
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// Your contribution to SoftEther VPN Project is much appreciated.
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// Please send patches to us through GitHub.
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// Read the SoftEther VPN Patch Acceptance Policy in advance:
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// http://www.softether.org/5-download/src/9.patch
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//
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//
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// DEAR SECURITY EXPERTS
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// ---------------------
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//
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// If you find a bug or a security vulnerability please kindly inform us
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// about the problem immediately so that we can fix the security problem
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// to protect a lot of users around the world as soon as possible.
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//
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// Our e-mail address for security reports is:
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// softether-vpn-security [at] softether.org
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//
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// Please note that the above e-mail address is not a technical support
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// inquiry address. If you need technical assistance, please visit
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// http://www.softether.org/ and ask your question on the users forum.
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//
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// Thank you for your cooperation.
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//
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//
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// NO MEMORY OR RESOURCE LEAKS
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// ---------------------------
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//
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// The memory-leaks and resource-leaks verification under the stress
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// test has been passed before release this source code.
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// IPsec.h
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// Header of IPsec.c
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#ifndef IPSEC_H
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#define IPSEC_H
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//// Constants
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// UDP port number
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#define IPSEC_PORT_L2TP 1701 // L2TP
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#define IPSEC_PORT_IPSEC_ISAKMP 500 // ISAKMP
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#define IPSEC_PORT_IPSEC_ESP_UDP 4500 // IPsec ESP over UDP
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#define IPSEC_PORT_IPSEC_ESP_RAW MAKE_SPECIAL_PORT(50) // Raw mode ESP Protocol No: 50
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#define IPSEC_PORT_IPSEC_ESP_RAW_WPF MAKE_SPECIAL_PORT(52) // Raw mode ESP Protocol No: 52 (WPF)
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#define IPSEC_PORT_L2TPV3_VIRTUAL 1000001 // L2TPv3 virtual port
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// IP protocol number
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#define IPSEC_IP_PROTO_ETHERIP IP_PROTO_ETHERIP // EtherIP
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#define IPSEC_IP_PROTO_L2TPV3 IP_PROTO_L2TPV3 // L2TPv3
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// WFP tag
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#define WFP_ESP_PACKET_TAG_1 0x19841117
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#define WFP_ESP_PACKET_TAG_2 0x1accafe1
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// Monitoring interval of OS service
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#define IPSEC_CHECK_OS_SERVICE_INTERVAL_INITIAL 1024
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#define IPSEC_CHECK_OS_SERVICE_INTERVAL_MAX (5 * 60 * 1000)
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// Default IPsec pre-shared key
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#define IPSEC_DEFAULT_SECRET "vpn"
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//// Type
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// List of services provided by IPsec server
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struct IPSEC_SERVICES
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{
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bool L2TP_Raw; // Raw L2TP
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bool L2TP_IPsec; // L2TP over IPsec
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bool EtherIP_IPsec; // EtherIP over IPsec
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char IPsec_Secret[MAX_SIZE]; // IPsec pre-shared key
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char L2TP_DefaultHub[MAX_SIZE]; // Default Virtual HUB name for L2TP connection
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};
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// EtherIP key list entry
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struct ETHERIP_ID
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{
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char Id[MAX_SIZE]; // ID
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char HubName[MAX_HUBNAME_LEN + 1]; // Virtual HUB name
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char UserName[MAX_USERNAME_LEN + 1]; // User name
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char Password[MAX_USERNAME_LEN + 1]; // Password
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};
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// IPsec server
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struct IPSEC_SERVER
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{
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CEDAR *Cedar;
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UDPLISTENER *UdpListener;
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bool Halt;
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bool NoMoreChangeSettings;
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LOCK *LockSettings;
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IPSEC_SERVICES Services;
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L2TP_SERVER *L2TP; // L2TP server
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IKE_SERVER *Ike; // IKE server
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LIST *EtherIPIdList; // EtherIP setting list
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UINT EtherIPIdListSettingVerNo; // EtherIP setting list version number
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THREAD *OsServiceCheckThread; // OS Service monitoring thread
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EVENT *OsServiceCheckThreadEvent; // Event for OS Service monitoring thread
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IPSEC_WIN7 *Win7; // Helper module for Windows Vista / 7
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bool Check_LastEnabledStatus;
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bool HostIPAddressListChanged;
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bool OsServiceStoped;
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};
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//// Function prototype
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IPSEC_SERVER *NewIPsecServer(CEDAR *cedar);
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void FreeIPsecServer(IPSEC_SERVER *s);
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void IPsecServerUdpPacketRecvProc(UDPLISTENER *u, LIST *packet_list);
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void IPsecServerSetServices(IPSEC_SERVER *s, IPSEC_SERVICES *sl);
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void IPsecNormalizeServiceSetting(IPSEC_SERVER *s);
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void IPsecServerGetServices(IPSEC_SERVER *s, IPSEC_SERVICES *sl);
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void IPsecProcPacket(IPSEC_SERVER *s, UDPPACKET *p);
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int CmpEtherIPId(void *p1, void *p2);
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bool SearchEtherIPId(IPSEC_SERVER *s, ETHERIP_ID *id, char *id_str);
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void AddEtherIPId(IPSEC_SERVER *s, ETHERIP_ID *id);
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bool DeleteEtherIPId(IPSEC_SERVER *s, char *id_str);
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void IPsecOsServiceCheckThread(THREAD *t, void *p);
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bool IPsecCheckOsService(IPSEC_SERVER *s);
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void IPSecSetDisable(bool b);
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#endif // IPSEC_H
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