454 lines
12 KiB
C++
454 lines
12 KiB
C++
// ZXPortMap.cpp: implementation of the CZXPortMap class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "StdAfx.h"
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#include "ZXPortMap.h"
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#include <stdio.h>
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#ifdef _DEBUG
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#undef THIS_FILE
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static char THIS_FILE[]=__FILE__;
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#define new DEBUG_NEW
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#endif
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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SOCKET CZXPortMap::SocketNum[1024]={0};
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int CZXPortMap::nSocket=0;
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int CZXPortMap::nTimes=0;
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HANDLE CZXPortMap::hThreadPort[1024]={0};
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bool CZXPortMap::bIsRunning = false;
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int CZXPortMap::nThreadNum = 0;
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extern BYTE bSerStat[128];
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CZXPortMap::CZXPortMap()
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{
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nCtrlPort = 0;
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nServerPort = 0;
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}
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CZXPortMap::~CZXPortMap()
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{
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}
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int CZXPortMap::DataSend(SOCKET s, char *DataBuf, int DataLen)//将DataBuf中的DataLen个字节发到s去
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{
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int nBytesLeft = DataLen;
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int nBytesSent = 0;
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int ret;
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//set socket to blocking mode
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int iMode = 0;
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ioctlsocket(s, FIONBIO, (u_long FAR*) &iMode);
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while(nBytesLeft > 0)
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{
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ret = send(s, DataBuf + nBytesSent, nBytesLeft, 0);
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if(ret <= 0)
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break;
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nBytesSent += ret;
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nBytesLeft -= ret;
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}
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return nBytesSent;
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}
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SOCKET CZXPortMap::ConnectHost(DWORD dwIP, WORD wPort)//连接指定IP和端口
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{
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SOCKET sockid;
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if ((sockid = socket(AF_INET,SOCK_STREAM,0)) == INVALID_SOCKET)
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return 0;
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struct sockaddr_in srv_addr;
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srv_addr.sin_family = AF_INET;
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srv_addr.sin_addr.S_un.S_addr = dwIP;
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srv_addr.sin_port = htons(wPort);
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if (connect(sockid,(struct sockaddr*)&srv_addr,sizeof(struct sockaddr_in)) == SOCKET_ERROR)
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goto error;
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return sockid;
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error:
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closesocket(sockid);
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return 0;
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}
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DWORD WINAPI CZXPortMap::TransmitData(LPVOID lParam)//在两个SOCKET中进行数据转发
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{
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SOCKINFO socks = *((SOCKINFO*)lParam);
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SOCKET ClientSock = socks.ClientSock;
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SOCKET ServerSock = socks.ServerSock;
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char RecvBuf[MAXBUFSIZE] = {0};
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fd_set Fd_Read;
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int ret, nRecv;
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while(bIsRunning)
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{
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FD_ZERO(&Fd_Read);
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FD_SET(ClientSock, &Fd_Read);
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FD_SET(ServerSock, &Fd_Read);
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ret = select(0, &Fd_Read, NULL, NULL, NULL);
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if(ret <= 0)
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goto error;
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if(FD_ISSET(ClientSock, &Fd_Read))
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{
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nRecv = recv(ClientSock, RecvBuf, sizeof(RecvBuf), 0);
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if(nRecv <= 0)
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goto error;
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ret = DataSend(ServerSock, RecvBuf, nRecv);
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if(ret == 0 || ret != nRecv)
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goto error;
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}
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if(FD_ISSET(ServerSock, &Fd_Read))
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{
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nRecv = recv(ServerSock, RecvBuf, sizeof(RecvBuf), 0);
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if(nRecv <= 0)
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goto error;
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ret = DataSend(ClientSock, RecvBuf, nRecv);
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if(ret == 0 || ret != nRecv)
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goto error;
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}
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}
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error:
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closesocket(ClientSock);
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closesocket(ServerSock);
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return 0;
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}
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SOCKET CZXPortMap::ConnectHost(char *szIP, WORD wPort)
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{
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return ConnectHost(inet_addr(szIP), wPort);
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}
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SOCKET CZXPortMap::CreateTmpSocket(WORD *wPort)//创建一个临时的套接字,指针wPort获得创建的临时端口
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{
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struct sockaddr_in srv_addr = {0};
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int addrlen = sizeof(struct sockaddr_in);
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SOCKET s = CreateSocket(INADDR_ANY, 0);
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if(s <= 0)
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goto error;
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if(getsockname(s, (struct sockaddr*)&srv_addr, &addrlen) == SOCKET_ERROR)
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goto error;
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*wPort =ntohs(srv_addr.sin_port);
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return s;
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error:
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closesocket(s);
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return 0;
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}
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BOOL CZXPortMap::InitSocket()
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{
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WSADATA wsadata;
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return WSAStartup(MAKEWORD(2,2),&wsadata) == 0;
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}
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SOCKET CZXPortMap::CreateSocket(DWORD dwIP, WORD wPort)//在dwIP上绑定wPort端口
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{
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SOCKET sockid;
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if ((sockid = socket(AF_INET,SOCK_STREAM,0)) == INVALID_SOCKET)
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return 0;
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struct sockaddr_in srv_addr = {0};
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srv_addr.sin_family = AF_INET;
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srv_addr.sin_addr.S_un.
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S_addr = dwIP;
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srv_addr.sin_port = htons(wPort);
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if (bind(sockid,(struct sockaddr*)&srv_addr,sizeof(struct sockaddr_in)) == SOCKET_ERROR)
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goto error;
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listen(sockid,3);
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SocketNum[++nSocket] = sockid;
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return sockid;
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error:
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closesocket(sockid);
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return 0;
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}
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DWORD WINAPI CZXPortMap::PortTransfer_2(LPVOID lParam)
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{
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TransferParam<ADDRESS, WORD> *ConfigInfo = (TransferParam<ADDRESS, WORD> *)lParam;
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SOCKET CtrlSocket = ConfigInfo->GlobalData.s;
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DWORD dwCtrlIP;
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//WORD wPort;
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SOCKADDR_IN clientaddr;
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int addrlen = sizeof(clientaddr);
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//之前用错了个API(getsockname),这里应该用getpeername
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if(getpeername(CtrlSocket, (SOCKADDR *)&clientaddr, &addrlen) == SOCKET_ERROR)
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return 0;
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//获得运行PortTransfer_3模式的计算机的IP
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dwCtrlIP = clientaddr.sin_addr.S_un.S_addr;
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//wPort = ntohs(clientaddr.sin_port);
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SOCKET ClientSocket, ServerSocket;
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SOCKINFO socks;
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//printf("ThreadID: %d ==> Connecting to Client...", nTimes);
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//向公网建立新的连接
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ClientSocket = ConnectHost(dwCtrlIP, ConfigInfo->LocalData.Pop());
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if(ClientSocket <= 0)
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return 0;
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// printf("OK.\r\n");
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// printf("ThreadID: %d ==> Connect to Server...", nTimes);
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//连接到目标计算机的服务
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ServerSocket = ConnectHost(ConfigInfo->GlobalData.szIP, ConfigInfo->GlobalData.wPort);
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if(ServerSocket <= 0)
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{
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//printf("Error.\r\n");
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closesocket(ClientSocket);
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return 0;
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}
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// printf("OK.\r\nStarting TransmitData\r\n", nTimes);
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socks.ClientSock = ClientSocket;//公网计算机的套接字
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socks.ServerSock = ServerSocket;//目标计算机服务的套接字
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//进入纯数据转发状态
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return TransmitData((LPVOID)&socks);
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}
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DWORD WINAPI CZXPortMap::PortTransfer_1(LPVOID lParam)
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{
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TransferParam<ADDRESS, SOCKET> *ConfigInfo = (TransferParam<ADDRESS, SOCKET>*)lParam;
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SOCKET ClientSock, ServerSock;
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//出栈，获得客户的套接字
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ClientSock = ConfigInfo->LocalData.Pop();
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//printf("ThreadID: %d ==> Now Connecting To Server...", nTimes);
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//先连接到目标计算机的服务
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ServerSock = ConnectHost(ConfigInfo->GlobalData.szIP, ConfigInfo->GlobalData.wPort);
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if(ServerSock <= 0)
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{
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///printf("Error.\r\n");
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closesocket(ClientSock);
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return 0;
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}
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//printf("OK.\r\nStarting TransmitData\r\n");
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SOCKINFO socks;
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socks.ClientSock = ClientSock;//客户的套接字
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socks.ServerSock = ServerSock;//目标计算机服务的套接字
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//进入纯数据转发状态
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return TransmitData((LPVOID)&socks);
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}
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BOOL CZXPortMap::PortTransfer_1(WORD ListenPort, char *szIP, WORD wPort)
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{
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// HANDLE hThread;
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DWORD dwThreadId;
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SOCKET AcceptSocket;
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TransferParam<ADDRESS, SOCKET> ConfigInfo;
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_snprintf(ConfigInfo.GlobalData.szIP, ADDRSIZE, "%s", szIP);
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ConfigInfo.GlobalData.wPort = wPort;
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//监听个服务端口，即映射端口
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SOCKET localsockid = CreateSocket(INADDR_ANY, ListenPort);
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if(localsockid <= 0)
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goto error;
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while(bIsRunning)
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{
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//printf("Accepting new Client...");
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AcceptSocket = accept(localsockid, NULL, NULL);
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if(AcceptSocket == INVALID_SOCKET)
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goto error;
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nTimes++;
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//printf("OK.\r\n");
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//将接受到的客户请求套接字转到新的线程里处理
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//然后继续等待新的请求
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ConfigInfo.LocalData.Push(AcceptSocket);
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hThreadPort[++nThreadNum] = CreateThread(NULL, 0, PortTransfer_1, (LPVOID)&ConfigInfo, NULL, &dwThreadId);
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if(hThreadPort[nThreadNum])
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CloseHandle(hThreadPort[nThreadNum]);
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else
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Sleep(1000);
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}
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error:
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//printf("Error.\r\n");
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closesocket(localsockid);
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return false;
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}
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DWORD WINAPI CZXPortMap::PortTransfer_3(LPVOID lParam)
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{
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SOCKINFO socks;
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SOCKET ClientSocket, ServerSocket, CtrlSocket, tmpSocket;
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TransferParam<SOCKET, SOCKET> *ConfigInfo = (TransferParam<SOCKET, SOCKET>*)lParam;
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CtrlSocket = ConfigInfo->GlobalData;
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ClientSocket = ConfigInfo->LocalData.Pop();
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WORD wPort;
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tmpSocket = CreateTmpSocket(&wPort);//创建个临时端口
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if(tmpSocket <= 0 || wPort <= 0)
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{
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closesocket(ClientSocket);
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return 0;
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}
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//通知内网用户发起新的连接到刚创建的临时端口
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if(send(CtrlSocket, (char*)&wPort, sizeof(wPort), 0) == SOCKET_ERROR)
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{
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closesocket(ClientSocket);
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closesocket(CtrlSocket);
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return 0;
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}
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//printf("ThreadID: %d ==> Waiting for server connection...", nTimes);
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ServerSocket = accept(tmpSocket, NULL, NULL);
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if(ServerSocket == INVALID_SOCKET)
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{
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//printf("Error.\r\n");
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closesocket(ClientSocket);
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return 0;
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}
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//printf("OK.\r\n");
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socks.ClientSock = ClientSocket;
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socks.ServerSock = ServerSocket;
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//进入纯数据转发状态
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return TransmitData((LPVOID)&socks);
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}
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BOOL CZXPortMap::PortTransfer_2(char *szCtrlIP, WORD wCtrlPort, char *szIP, WORD wPort)
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{
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int nRecv;
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WORD ReqPort;
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// HANDLE hThread;
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DWORD dwThreadId;
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TransferParam<ADDRESS, WORD> ConfigInfo;
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_snprintf(ConfigInfo.GlobalData.szIP, ADDRSIZE, "%s", szIP);
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ConfigInfo.GlobalData.wPort = wPort;
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//printf("Creating a ctrlconnection...");
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//与PortTransfer_3模式（工作在共网）的计算机建立控制管道连接
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SOCKET CtrlSocket = ConnectHost(szCtrlIP, wCtrlPort);
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if(CtrlSocket <= 0)
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goto error;
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ConfigInfo.GlobalData.s = CtrlSocket;
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//printf("OK.\r\n");
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while(bIsRunning)
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{
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//接收来自（工作在公网）计算机的命令，数据为一个WORD，
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//表示公网计算机监听了这个端口
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nRecv = recv(CtrlSocket, (char*)&ReqPort, sizeof(ReqPort), 0);
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if(nRecv <= 0)
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goto error;
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nTimes++;
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ConfigInfo.LocalData.Push(ReqPort);//传递信息的结构
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hThreadPort[++nThreadNum] = CreateThread(NULL, 0, PortTransfer_2, (LPVOID)&ConfigInfo, NULL, &dwThreadId);
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if(hThreadPort[nThreadNum])
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CloseHandle(hThreadPort[nThreadNum]);
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else
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Sleep(1000);
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}
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error:
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// printf("Error.\r\n");
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closesocket(CtrlSocket);
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return false;
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}
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void CZXPortMap::Stop()
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{
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bIsRunning = false;
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Sleep(100);
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char szMsg[128];
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while(nSocket)
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{
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// d("while1");
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wsprintf(szMsg, "nsocket-di:%d", nSocket);
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// d(szMsg);
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if(SocketNum[nSocket]!=INVALID_SOCKET)
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{
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closesocket(SocketNum[nSocket]);
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// d("close socket");
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}
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nSocket--;
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}
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while(nThreadNum)
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{
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if(hThreadPort[nThreadNum] != INVALID_HANDLE_VALUE)
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{
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// d("TermailThread");
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TerminateThread(hThreadPort[nThreadNum], 0);
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CloseHandle(hThreadPort);
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}
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nThreadNum--;
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// d("while2");
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}
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nThreadNum = 0;
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nSocket = 0;
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// hThreadPort[1024] = {0};
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//memset(hThreadPort,)
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bIsRunning = true;
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}
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BOOL CZXPortMap::PortTransfer_3(WORD wCtrlPort, WORD wServerPort)//监听的两个端口
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{
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DWORD dwThreadId;
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BOOL bOptVal = TRUE;
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int bOptLen = sizeof(BOOL);
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TransferParam<SOCKET, SOCKET> ConfigInfo;
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SOCKET ctrlsockid, serversockid, CtrlSocket, AcceptSocket;
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ctrlsockid = CreateSocket(INADDR_ANY, wCtrlPort);//创建套接字
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if(ctrlsockid <= 0)
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goto error2;
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serversockid = CreateSocket(INADDR_ANY, wServerPort);//创建套接字
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if(serversockid <= 0)
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goto error1;
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int nSockAddrLen;
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sockaddr_in sockAddr;
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memset(&sockAddr, 0, sizeof(sockAddr));
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nSockAddrLen = sizeof(sockAddr);
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getsockname(ctrlsockid, (SOCKADDR*)&sockAddr, &nSockAddrLen);
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nCtrlPort=ntohs(sockAddr.sin_port);
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memset(&sockAddr, 0, sizeof(sockAddr));
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nSockAddrLen = sizeof(sockAddr);
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getsockname(serversockid, (SOCKADDR*)&sockAddr, &nSockAddrLen);
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nServerPort=ntohs(sockAddr.sin_port);
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CtrlSocket = accept(ctrlsockid, NULL, NULL);//接受来自（内网用户发起）PortTransfer_2模式建立控制管道连接的请求
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if(CtrlSocket == INVALID_SOCKET)
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goto error0;
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//setsockopt( keep-alive......
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if (setsockopt(CtrlSocket, SOL_SOCKET, SO_KEEPALIVE, (char*)&bOptVal, bOptLen) == SOCKET_ERROR) {
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goto error0;
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//printf("Set SO_KEEPALIVE: ON\n");
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}
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//与内网用户建立了连接后就相当端口映射成功了
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//准备进入接收服务请求状态，并将在新起的线程中通过控制管道通知内网用户发起新的连接进行数据转发
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ConfigInfo.GlobalData = CtrlSocket;
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while(bIsRunning)
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{
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//printf("Accepting new Client...\r\n");
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AcceptSocket = accept(serversockid, NULL, NULL);
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if(AcceptSocket == INVALID_SOCKET)
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{
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//printf("Error.\r\n");
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Sleep(1000);
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continue;
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}
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nTimes++;
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//printf("OK.\r\n");
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ConfigInfo.LocalData.Push(AcceptSocket);//把接受到的套接字Push到栈结构中，传到新起线程那边可以再Pop出来
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hThreadPort[++nThreadNum] = CreateThread(NULL, 0, PortTransfer_3, (LPVOID)&ConfigInfo, NULL, &dwThreadId);
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if(hThreadPort[nThreadNum])
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CloseHandle(hThreadPort[nThreadNum]);
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else
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Sleep(1000);
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}
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error0:
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closesocket(CtrlSocket);
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error1:
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closesocket(serversockid);
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error2:
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closesocket(ctrlsockid);
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return false;
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}
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