mirror of
https://github.com/SoftEtherVPN/SoftEtherVPN.git
synced 2024-11-23 01:49:53 +03:00
dcd03476c4
remove unused function [src/Cedar/Connection.c:2861]: (style) The function 'InitTcpSockRc4Key' is never used.
372 lines
16 KiB
C
372 lines
16 KiB
C
// SoftEther VPN Source Code - Developer Edition Master Branch
|
|
// Cedar Communication Module
|
|
//
|
|
// SoftEther VPN Server, Client and Bridge are free software under GPLv2.
|
|
//
|
|
// Copyright (c) Daiyuu Nobori.
|
|
// Copyright (c) SoftEther VPN Project, University of Tsukuba, Japan.
|
|
// Copyright (c) SoftEther Corporation.
|
|
//
|
|
// All Rights Reserved.
|
|
//
|
|
// http://www.softether.org/
|
|
//
|
|
// Author: Daiyuu Nobori, Ph.D.
|
|
// 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.
|
|
|
|
|
|
// Connection.h
|
|
// Header of Connection.c
|
|
|
|
#ifndef CONNECTION_H
|
|
#define CONNECTION_H
|
|
|
|
// Magic number indicating that the packet is compressed
|
|
#define CONNECTION_BULK_COMPRESS_SIGNATURE 0xDEADBEEFCAFEFACEULL
|
|
|
|
#define KEEP_ALIVE_STRING "Internet Connection Keep Alive Packet"
|
|
|
|
#define UPDATE_LAST_COMM_TIME(v, n) {if ((v) <= (n)) { v = (n); } }
|
|
|
|
// KEEP CONNECT structure
|
|
struct KEEP
|
|
{
|
|
LOCK *lock; // Lock
|
|
bool Server; // Server mode
|
|
volatile bool Halt; // Stop flag
|
|
bool Enable; // Enable flag
|
|
char ServerName[MAX_HOST_NAME_LEN + 1]; // Server name
|
|
UINT ServerPort; // Server port number
|
|
bool UdpMode; // UDP mode
|
|
UINT Interval; // Packet transmission interval
|
|
THREAD *Thread; // Connection thread
|
|
EVENT *HaltEvent; // Stop event
|
|
CANCEL *Cancel; // Cancel
|
|
};
|
|
|
|
// SECURE_SIGN Structure
|
|
struct SECURE_SIGN
|
|
{
|
|
char SecurePublicCertName[MAX_SECURE_DEVICE_FILE_LEN + 1]; // Secure device certificate name
|
|
char SecurePrivateKeyName[MAX_SECURE_DEVICE_FILE_LEN + 1]; // Secure device secret key name
|
|
X *ClientCert; // Client certificate
|
|
UCHAR Random[SHA1_SIZE]; // Random value for signature
|
|
UCHAR Signature[4096 / 8]; // Signed data
|
|
UINT UseSecureDeviceId;
|
|
UINT BitmapId; // Bitmap ID
|
|
};
|
|
|
|
// Function type declaration
|
|
typedef bool (CHECK_CERT_PROC)(SESSION *s, CONNECTION *c, X *server_x, bool *expired);
|
|
typedef bool (SECURE_SIGN_PROC)(SESSION *s, CONNECTION *c, SECURE_SIGN *sign);
|
|
|
|
// RC4 key pair
|
|
struct RC4_KEY_PAIR
|
|
{
|
|
UCHAR ServerToClientKey[16];
|
|
UCHAR ClientToServerKey[16];
|
|
};
|
|
|
|
// Client Options
|
|
struct CLIENT_OPTION
|
|
{
|
|
wchar_t AccountName[MAX_ACCOUNT_NAME_LEN + 1]; // Connection setting name
|
|
char Hostname[MAX_HOST_NAME_LEN + 1]; // Host name
|
|
UINT Port; // Port number
|
|
UINT PortUDP; // UDP port number (0: Use only TCP)
|
|
UINT ProxyType; // Type of proxy
|
|
char ProxyName[MAX_HOST_NAME_LEN + 1]; // Proxy server name
|
|
UINT ProxyPort; // Port number of the proxy server
|
|
char ProxyUsername[MAX_PROXY_USERNAME_LEN + 1]; // Maximum user name length
|
|
char ProxyPassword[MAX_PROXY_PASSWORD_LEN + 1]; // Maximum password length
|
|
UINT NumRetry; // Automatic retries
|
|
UINT RetryInterval; // Retry interval
|
|
char HubName[MAX_HUBNAME_LEN + 1]; // HUB name
|
|
UINT MaxConnection; // Maximum number of concurrent TCP connections
|
|
bool UseEncrypt; // Use encrypted communication
|
|
bool UseCompress; // Use data compression
|
|
bool HalfConnection; // Use half connection in TCP
|
|
bool NoRoutingTracking; // Disable the routing tracking
|
|
char DeviceName[MAX_DEVICE_NAME_LEN + 1]; // VLAN device name
|
|
UINT AdditionalConnectionInterval; // Connection attempt interval when additional connection establish
|
|
UINT ConnectionDisconnectSpan; // Disconnection interval
|
|
bool HideStatusWindow; // Hide the status window
|
|
bool HideNicInfoWindow; // Hide the NIC status window
|
|
bool RequireMonitorMode; // Monitor port mode
|
|
bool RequireBridgeRoutingMode; // Bridge or routing mode
|
|
bool DisableQoS; // Disable the VoIP / QoS function
|
|
bool FromAdminPack; // For Administration Pack
|
|
bool NoUdpAcceleration; // Do not use UDP acceleration mode
|
|
UCHAR HostUniqueKey[SHA1_SIZE]; // Host unique key
|
|
};
|
|
|
|
// Client authentication data
|
|
struct CLIENT_AUTH
|
|
{
|
|
UINT AuthType; // Authentication type
|
|
char Username[MAX_USERNAME_LEN + 1]; // User name
|
|
UCHAR HashedPassword[SHA1_SIZE]; // Hashed passwords
|
|
char PlainPassword[MAX_PASSWORD_LEN + 1]; // Password
|
|
X *ClientX; // Client certificate
|
|
K *ClientK; // Client private key
|
|
char SecurePublicCertName[MAX_SECURE_DEVICE_FILE_LEN + 1]; // Secure device certificate name
|
|
char SecurePrivateKeyName[MAX_SECURE_DEVICE_FILE_LEN + 1]; // Secure device secret key name
|
|
CHECK_CERT_PROC *CheckCertProc; // Server certificate confirmation procedure
|
|
SECURE_SIGN_PROC *SecureSignProc; // Security signing procedure
|
|
};
|
|
|
|
// TCP socket data structure
|
|
struct TCPSOCK
|
|
{
|
|
SOCK *Sock; // Socket
|
|
FIFO *RecvFifo; // Reception buffer
|
|
FIFO *SendFifo; // Transmission buffer
|
|
UINT Mode; // Read mode
|
|
UINT WantSize; // Requested data size
|
|
UINT NextBlockNum; // Total number of blocks that can be read next
|
|
UINT NextBlockSize; // Block size that is planned to read next
|
|
UINT CurrentPacketNum; // Current packet number
|
|
UINT64 LastCommTime; // Last communicated time
|
|
UINT64 LastRecvTime; // Time the last data received
|
|
UINT LateCount; // The number of delay occurences
|
|
UINT Direction; // Direction
|
|
UINT64 NextKeepAliveTime; // Next time to send a KeepAlive packet
|
|
RC4_KEY_PAIR Rc4KeyPair; // RC4 key pair
|
|
CRYPT *SendKey; // Transmission key
|
|
CRYPT *RecvKey; // Reception key
|
|
UINT64 DisconnectTick; // Time to disconnect this connection
|
|
UINT64 EstablishedTick; // Establishment time
|
|
};
|
|
|
|
// TCP communication data structure
|
|
struct TCP
|
|
{
|
|
LIST *TcpSockList; // TCP socket list
|
|
};
|
|
|
|
// UDP communication data structure
|
|
struct UDP
|
|
{
|
|
SOCK *s; // UDP socket (for transmission)
|
|
IP ip; // Destination IP address
|
|
UINT port; // Destination port number
|
|
UINT64 NextKeepAliveTime; // Next time to send a KeepAlive packet
|
|
UINT64 Seq; // Packet sequence number
|
|
UINT64 RecvSeq;
|
|
QUEUE *BufferQueue; // Queue of buffer to be sent
|
|
};
|
|
|
|
// Data block
|
|
struct BLOCK
|
|
{
|
|
BOOL Compressed; // Compression flag
|
|
UINT Size; // Block size
|
|
UINT SizeofData; // Data size
|
|
UCHAR *Buf; // Buffer
|
|
bool PriorityQoS; // Priority packet for VoIP / QoS function
|
|
UINT Ttl; // TTL value (Used only in ICMP NAT of Virtual.c)
|
|
UINT Param1; // Parameter 1
|
|
bool IsFlooding; // Is flooding packet
|
|
};
|
|
|
|
// Connection structure
|
|
struct CONNECTION
|
|
{
|
|
LOCK *lock; // Lock
|
|
REF *ref; // Reference counter
|
|
CEDAR *Cedar; // Cedar
|
|
struct SESSION *Session; // Session
|
|
UINT Protocol; // Protocol
|
|
SOCK *FirstSock; // Socket for negotiation
|
|
SOCK *TubeSock; // Socket for in-process communication
|
|
TCP *Tcp; // TCP communication data structure
|
|
UDP *Udp; // UDP communication data structure
|
|
bool ServerMode; // Server mode
|
|
UINT Status; // Status
|
|
char *Name; // Connection name
|
|
THREAD *Thread; // Thread
|
|
volatile bool Halt; // Stop flag
|
|
UCHAR Random[SHA1_SIZE]; // Random number for Authentication
|
|
UINT ServerVer; // Server version
|
|
UINT ServerBuild; // Server build number
|
|
UINT ClientVer; // Client version
|
|
UINT ClientBuild; // Client build number
|
|
char ServerStr[MAX_SERVER_STR_LEN + 1]; // Server string
|
|
char ClientStr[MAX_CLIENT_STR_LEN + 1]; // Client string
|
|
UINT Err; // Error value
|
|
bool ClientConnectError_NoSavePassword; // Don't save the password for the specified user name
|
|
QUEUE *ReceivedBlocks; // Block queue that is received
|
|
QUEUE *SendBlocks; // Block queue planned to be sent
|
|
QUEUE *SendBlocks2; // Send queue (high priority)
|
|
COUNTER *CurrentNumConnection; // Counter of the number of current connections
|
|
LIST *ConnectingThreads; // List of connected threads
|
|
LIST *ConnectingSocks; // List of the connected sockets
|
|
bool flag1; // Flag 1
|
|
UCHAR *RecvBuf; // Receive buffer
|
|
char ServerName[MAX_HOST_NAME_LEN + 1]; // Server name
|
|
UINT ServerPort; // Port number
|
|
bool RestoreServerNameAndPort; // Flag to restore the server name and port number to original
|
|
bool UseTicket; // Ticket using flag
|
|
UCHAR Ticket[SHA1_SIZE]; // Ticket
|
|
UINT CurrentSendQueueSize; // Total size of the transmission queue
|
|
X *ServerX; // Server certificate
|
|
X *ClientX; // Client certificate
|
|
char *CipherName; // Encryption algorithm name
|
|
UINT64 ConnectedTick; // Time it is connected
|
|
IP ClientIp; // Client IP address
|
|
char ClientHostname[MAX_HOST_NAME_LEN + 1]; // Client host name
|
|
UINT Type; // Type
|
|
void *hWndForUI; // Parent window
|
|
bool IsInProc; // In-process
|
|
char InProcPrefix[64]; // Prefix
|
|
UINT AdditionalConnectionFailedCounter; // Additional connection failure counter
|
|
UINT64 LastCounterResetTick; // Time the counter was reset finally
|
|
bool WasSstp; // Processed the SSTP
|
|
bool WasDatProxy; // DAT proxy processed
|
|
UCHAR CToken_Hash[SHA1_SIZE]; // CTOKEN_HASH
|
|
UINT LastTcpQueueSize; // The last queue size of TCP sockets
|
|
UINT LastPacketQueueSize; // The last queue size of packets
|
|
UINT LastRecvFifoTotalSize; // The last RecvFifo total size
|
|
UINT LastRecvBlocksNum; // The last ReceivedBlocks num
|
|
};
|
|
|
|
|
|
|
|
// Function prototypes
|
|
|
|
CONNECTION *NewClientConnection(SESSION *s);
|
|
CONNECTION *NewClientConnectionEx(SESSION *s, char *client_str, UINT client_ver, UINT client_build);
|
|
CONNECTION *NewServerConnection(CEDAR *cedar, SOCK *s, THREAD *t);
|
|
void ReleaseConnection(CONNECTION *c);
|
|
void CleanupConnection(CONNECTION *c);
|
|
int CompareConnection(void *p1, void *p2);
|
|
void StopConnection(CONNECTION *c, bool no_wait);
|
|
void ConnectionAccept(CONNECTION *c);
|
|
void StartTunnelingMode(CONNECTION *c);
|
|
void EndTunnelingMode(CONNECTION *c);
|
|
void DisconnectTcpSockets(CONNECTION *c);
|
|
void ConnectionReceive(CONNECTION *c, CANCEL *c1, CANCEL *c2);
|
|
void ConnectionSend(CONNECTION *c, UINT64 now);
|
|
TCPSOCK *NewTcpSock(SOCK *s);
|
|
void FreeTcpSock(TCPSOCK *ts);
|
|
BLOCK *NewBlock(void *data, UINT size, int compress);
|
|
void FreeBlock(BLOCK *b);
|
|
void StopAllAdditionalConnectThread(CONNECTION *c);
|
|
UINT GenNextKeepAliveSpan(CONNECTION *c);
|
|
void SendKeepAlive(CONNECTION *c, TCPSOCK *ts);
|
|
void DisconnectUDPSockets(CONNECTION *c);
|
|
void PutUDPPacketData(CONNECTION *c, void *data, UINT size);
|
|
void SendDataWithUDP(SOCK *s, CONNECTION *c);
|
|
void InsertReceivedBlockToQueue(CONNECTION *c, BLOCK *block, bool no_lock);
|
|
UINT TcpSockRecv(SESSION *s, TCPSOCK *ts, void *data, UINT size);
|
|
UINT TcpSockSend(SESSION *s, TCPSOCK *ts, void *data, UINT size);
|
|
void WriteSendFifo(SESSION *s, TCPSOCK *ts, void *data, UINT size);
|
|
void WriteRecvFifo(SESSION *s, TCPSOCK *ts, void *data, UINT size);
|
|
CLIENT_AUTH *CopyClientAuth(CLIENT_AUTH *a);
|
|
BUF *NewKeepPacket(bool server_mode);
|
|
void KeepThread(THREAD *thread, void *param);
|
|
KEEP *StartKeep();
|
|
void StopKeep(KEEP *k);
|
|
void InRpcSecureSign(SECURE_SIGN *t, PACK *p);
|
|
void OutRpcSecureSign(PACK *p, SECURE_SIGN *t);
|
|
void FreeRpcSecureSign(SECURE_SIGN *t);
|
|
void NormalizeEthMtu(BRIDGE *b, CONNECTION *c, UINT packet_size);
|
|
UINT GetMachineRand();
|
|
|
|
|
|
|
|
#endif // CONNECTION_H
|