2014-01-04 17:00:08 +04:00
|
|
|
// SoftEther VPN Source Code
|
|
|
|
|
// Cedar Communication Module
|
|
|
|
|
//
|
|
|
|
|
// SoftEther VPN Server, Client and Bridge are free software under GPLv2.
|
|
|
|
|
//
|
2017-10-18 12:24:21 +03:00
|
|
|
// Copyright (c) Daiyuu Nobori, Ph.D..
|
|
|
|
|
// Copyright (c) SoftEther VPN Project, University of Tsukuba, Japan.
|
|
|
|
|
// Copyright (c) SoftEther Corporation.
|
2014-01-04 17:00:08 +04:00
|
|
|
//
|
|
|
|
|
// 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.
|
|
|
|
|
//
|
2014-07-11 21:06:20 +04:00
|
|
|
// 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.
|
2014-01-04 17:00:08 +04:00
|
|
|
//
|
|
|
|
|
//
|
2014-01-15 13:01:42 +04:00
|
|
|
// 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
|
|
|
|
|
//
|
|
|
|
|
//
|
2014-01-04 17:00:08 +04:00
|
|
|
// 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.
|
2014-03-20 00:45:05 +04:00
|
|
|
//
|
|
|
|
|
//
|
|
|
|
|
// NO MEMORY OR RESOURCE LEAKS
|
|
|
|
|
// ---------------------------
|
|
|
|
|
//
|
|
|
|
|
// The memory-leaks and resource-leaks verification under the stress
|
|
|
|
|
// test has been passed before release this source code.
|
2014-01-04 17:00:08 +04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
// IPsec_IPC.h
|
|
|
|
|
// Header of IPsec_IPC.c
|
|
|
|
|
|
|
|
|
|
#ifndef IPSEC_IPC
|
|
|
|
|
#define IPSEC_IPC
|
|
|
|
|
|
|
|
|
|
// Constants
|
|
|
|
|
#define IPC_ARP_LIFETIME (3 * 60 * 1000)
|
|
|
|
|
#define IPC_ARP_GIVEUPTIME (1 * 1000)
|
|
|
|
|
#define IPC_DHCP_TIMEOUT (5 * 1000)
|
|
|
|
|
#define IPC_DHCP_TIMEOUT_TOTAL_GIVEUP (20 * 1000)
|
|
|
|
|
#define IPC_DHCP_MIN_LEASE 5
|
|
|
|
|
#define IPC_DHCP_DEFAULT_LEASE 3600
|
|
|
|
|
|
|
|
|
|
#define IPC_MAX_PACKET_QUEUE_LEN 10000
|
|
|
|
|
|
|
|
|
|
#define IPC_DHCP_VENDOR_ID "MSFT 5.0"
|
|
|
|
|
|
|
|
|
|
#define IPC_PASSWORD_MSCHAPV2_TAG "xH7DiNlurDhcYV4a:"
|
|
|
|
|
|
|
|
|
|
// ARP table entry
|
|
|
|
|
struct IPC_ARP
|
|
|
|
|
{
|
|
|
|
|
IP Ip; // IP address
|
|
|
|
|
bool Resolved; // Whether the MAC address have been resolved
|
|
|
|
|
UCHAR MacAddress[6]; // MAC address
|
|
|
|
|
UINT64 GiveupTime; // Time to give up (in the case of unresolved)
|
|
|
|
|
UINT64 ExpireTime; // Expiration date (If resolved)
|
|
|
|
|
QUEUE *PacketQueue; // Transmission packet queue
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
// DHCP release queue
|
|
|
|
|
struct IPC_DHCP_RELESAE_QUEUE
|
|
|
|
|
{
|
|
|
|
|
DHCP_OPTION_LIST Req;
|
|
|
|
|
UINT TranId;
|
|
|
|
|
UCHAR MacAddress[6];
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
// IPC_PARAM
|
|
|
|
|
struct IPC_PARAM
|
|
|
|
|
{
|
|
|
|
|
char ClientName[MAX_SIZE];
|
|
|
|
|
char Postfix[MAX_SIZE];
|
|
|
|
|
char HubName[MAX_HUBNAME_LEN + 1];
|
|
|
|
|
char UserName[MAX_USERNAME_LEN + 1];
|
|
|
|
|
char Password[MAX_PASSWORD_LEN + 1];
|
|
|
|
|
IP ClientIp;
|
|
|
|
|
UINT ClientPort;
|
|
|
|
|
IP ServerIp;
|
|
|
|
|
UINT ServerPort;
|
|
|
|
|
char ClientHostname[MAX_SIZE];
|
|
|
|
|
char CryptName[MAX_SIZE];
|
|
|
|
|
bool BridgeMode;
|
|
|
|
|
UINT Mss;
|
|
|
|
|
bool IsL3Mode;
|
|
|
|
|
bool IsOpenVPN;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
// IPC_ASYNC object
|
|
|
|
|
struct IPC_ASYNC
|
|
|
|
|
{
|
|
|
|
|
CEDAR *Cedar; // Cedar
|
|
|
|
|
IPC_PARAM Param; // Parameters for creating IPC
|
|
|
|
|
THREAD *Thread; // Thread
|
|
|
|
|
SOCK_EVENT *SockEvent; // Socket events that is set when the connection is completed
|
|
|
|
|
bool Done; // Processing completion flag
|
|
|
|
|
IPC *Ipc; // IPC object (if it fails to connect, the value is NULL)
|
|
|
|
|
TUBE *TubeForDisconnect; // Tube for disconnection notification
|
|
|
|
|
UINT ErrorCode; // Error code in the case of failing to connect
|
|
|
|
|
DHCP_OPTION_LIST L3ClientAddressOption; // Client IP address option (Only in the case of L3 mode)
|
|
|
|
|
UINT64 L3DhcpRenewInterval; // DHCP update interval
|
|
|
|
|
UINT64 L3NextDhcpRenewTick; // DHCP renewal time of the next
|
|
|
|
|
bool DhcpAllocFailed; // Failed to get IP address from the DHCP server
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
// IPC object
|
|
|
|
|
struct IPC
|
|
|
|
|
{
|
|
|
|
|
CEDAR *Cedar;
|
|
|
|
|
char HubName[MAX_HUBNAME_LEN + 1];
|
|
|
|
|
char UserName[MAX_USERNAME_LEN + 1];
|
|
|
|
|
char Password[MAX_PASSWORD_LEN + 1];
|
|
|
|
|
char ClientHostname[MAX_SIZE];
|
|
|
|
|
UCHAR random[SHA1_SIZE];
|
|
|
|
|
char SessionName[MAX_SESSION_NAME_LEN + 1];
|
|
|
|
|
char ConnectionName[MAX_CONNECTION_NAME_LEN + 1];
|
|
|
|
|
POLICY *Policy;
|
|
|
|
|
SOCK *Sock;
|
|
|
|
|
INTERRUPT_MANAGER *Interrupt; // Interrupt manager
|
|
|
|
|
IP ClientIPAddress; // IP address of the client
|
|
|
|
|
IP SubnetMask; // Subnet mask of the client
|
|
|
|
|
IP DefaultGateway; // Default gateway address
|
|
|
|
|
IP BroadcastAddress; // Broadcast address
|
|
|
|
|
UCHAR MacAddress[6]; // MAC address
|
|
|
|
|
UCHAR Padding[2];
|
|
|
|
|
LIST *ArpTable; // ARP table
|
|
|
|
|
QUEUE *IPv4RecviedQueue; // IPv4 reception queue
|
|
|
|
|
TUBE_FLUSH_LIST *FlushList; // Tube Flush List
|
|
|
|
|
UCHAR MsChapV2_ServerResponse[20]; // Server response
|
2014-03-20 00:45:05 +04:00
|
|
|
DHCP_CLASSLESS_ROUTE_TABLE ClasslessRoute; // Classless routing table
|
2014-01-04 17:00:08 +04:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
// MS-CHAPv2 authentication information
|
|
|
|
|
struct IPC_MSCHAP_V2_AUTHINFO
|
|
|
|
|
{
|
|
|
|
|
char MsChapV2_PPPUsername[MAX_SIZE]; // MS-CHAPv2 Username
|
|
|
|
|
UCHAR MsChapV2_ServerChallenge[16]; // MS-CHAPv2 Server Challenge
|
|
|
|
|
UCHAR MsChapV2_ClientChallenge[16]; // MS-CHAPv2 Client Challenge
|
|
|
|
|
UCHAR MsChapV2_ClientResponse[24]; // MS-CHAPv2 Client Response
|
2015-10-06 14:18:00 +03:00
|
|
|
EAP_CLIENT *MsChapV2_EapClient; // EAP client
|
2014-01-04 17:00:08 +04:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
IPC *NewIPC(CEDAR *cedar, char *client_name, char *postfix, char *hubname, char *username, char *password,
|
|
|
|
|
UINT *error_code, IP *client_ip, UINT client_port, IP *server_ip, UINT server_port,
|
|
|
|
|
char *client_hostname, char *crypt_name,
|
2015-10-06 14:18:00 +03:00
|
|
|
bool bridge_mode, UINT mss, EAP_CLIENT *eap_client);
|
2014-01-04 17:00:08 +04:00
|
|
|
IPC *NewIPCByParam(CEDAR *cedar, IPC_PARAM *param, UINT *error_code);
|
|
|
|
|
IPC *NewIPCBySock(CEDAR *cedar, SOCK *s, void *mac_address);
|
|
|
|
|
void FreeIPC(IPC *ipc);
|
|
|
|
|
bool IsIPCConnected(IPC *ipc);
|
|
|
|
|
void IPCSetSockEventWhenRecvL2Packet(IPC *ipc, SOCK_EVENT *e);
|
|
|
|
|
void IPCSendL2(IPC *ipc, void *data, UINT size);
|
|
|
|
|
void IPCSendIPv4(IPC *ipc, void *data, UINT size);
|
|
|
|
|
BLOCK *IPCRecvL2(IPC *ipc);
|
|
|
|
|
BLOCK *IPCRecvIPv4(IPC *ipc);
|
|
|
|
|
void IPCProcessInterrupts(IPC *ipc);
|
|
|
|
|
void IPCProcessL3Events(IPC *ipc);
|
|
|
|
|
void IPCProcessL3EventsEx(IPC *ipc, UINT64 now);
|
2014-03-20 00:45:05 +04:00
|
|
|
bool IPCSetIPv4Parameters(IPC *ipc, IP *ip, IP *subnet, IP *gw, DHCP_CLASSLESS_ROUTE_TABLE *rt);
|
2014-01-04 17:00:08 +04:00
|
|
|
IPC_ARP *IPCNewARP(IP *ip, UCHAR *mac_address);
|
|
|
|
|
void IPCFreeARP(IPC_ARP *a);
|
|
|
|
|
int IPCCmpArpTable(void *p1, void *p2);
|
|
|
|
|
void IPCSendIPv4Unicast(IPC *ipc, void *data, UINT size, IP *next_ip);
|
|
|
|
|
IPC_ARP *IPCSearchArpTable(IPC *ipc, IP *ip);
|
|
|
|
|
void IPCSendIPv4WithDestMacAddr(IPC *ipc, void *data, UINT size, UCHAR *dest_mac_addr);
|
|
|
|
|
void IPCFlushArpTable(IPC *ipc);
|
|
|
|
|
void IPCFlushArpTableEx(IPC *ipc, UINT64 now);
|
|
|
|
|
void IPCProcessArp(IPC *ipc, BLOCK *b);
|
|
|
|
|
void IPCAssociateOnArpTable(IPC *ipc, IP *ip, UCHAR *mac_address);
|
|
|
|
|
bool IsValidUnicastMacAddress(UCHAR *mac);
|
|
|
|
|
bool IsValidUnicastIPAddress4(IP *ip);
|
|
|
|
|
bool IsValidUnicastIPAddressUINT4(UINT ip);
|
|
|
|
|
DHCPV4_DATA *IPCSendDhcpRequest(IPC *ipc, IP *dest_ip, UINT tran_id, DHCP_OPTION_LIST *opt, UINT expecting_code, UINT timeout, TUBE *discon_poll_tube);
|
|
|
|
|
BUF *IPCBuildDhcpRequest(IPC *ipc, IP *dest_ip, UINT tran_id, DHCP_OPTION_LIST *opt);
|
|
|
|
|
BUF *IPCBuildDhcpRequestOptions(IPC *ipc, DHCP_OPTION_LIST *opt);
|
|
|
|
|
bool IPCDhcpAllocateIP(IPC *ipc, DHCP_OPTION_LIST *opt, TUBE *discon_poll_tube);
|
|
|
|
|
bool IPCDhcpAllocateIPEx(IPC *ipc, DHCP_OPTION_LIST *opt, TUBE *discon_poll_tube, bool openvpn_compatible);
|
|
|
|
|
bool IPCDhcpRequestInformIP(IPC *ipc, DHCP_OPTION_LIST *opt, TUBE *discon_poll_tube, IP *client_ip);
|
|
|
|
|
void IPCDhcpRenewIP(IPC *ipc, IP *dhcp_server);
|
|
|
|
|
void IPCDhcpFreeIP(IPC *ipc, IP *dhcp_server);
|
|
|
|
|
IPC_ASYNC *NewIPCAsync(CEDAR *cedar, IPC_PARAM *param, SOCK_EVENT *sock_event);
|
|
|
|
|
void IPCAsyncThreadProc(THREAD *thread, void *param);
|
|
|
|
|
void FreeIPCAsync(IPC_ASYNC *a);
|
|
|
|
|
|
|
|
|
|
bool ParseAndExtractMsChapV2InfoFromPassword(IPC_MSCHAP_V2_AUTHINFO *d, char *password);
|
|
|
|
|
|
|
|
|
|
#endif // IPSEC_IPC
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
