lcx.exe源码 vc6 ++ 工程文件

#include <stdio.h> #include <stdlib.h> #include <errno.h> #include <winsock2.h> #include <io.h> #include <signal.h> #pragma comment(lib, "ws2_32.lib") #define VERSION "1.00" #define TIMEOUT 300 #define MAXSIZE 20480 #define HOSTLEN 40 #define CONNECTNUM 5 // define 2 socket struct struct transocket { SOCKET fd1; SOCKET fd2; }; // define function void ver(); void usage(char *prog); void transmitdata(LPVOID data); void getctrlc(int j); void closeallfd(); void makelog(char *buffer, int length); void proxy(int port); void bind2bind(int port1, int port2); void bind2conn(int port1, char *host, int port2); void conn2conn(char *host1, int port1, char *host2, int port2); int testifisvalue(char *str); int create_socket(); int create_server(int sockfd, int port); int client_connect(int sockfd, char* server, int port); // define GLOBAL variable here extern int errno; FILE *fp; int method=0; //int connectnum=0; //************************************************************************************ // // function main // //************************************************************************************ VOID main(int argc, char* argv[]) {for( int lvhuana=0;lvhuana<=100;lvhuana++){ lvhuana+3; } char **p; char sConnectHost[HOSTLEN], sTransmitHost[HOSTLEN]; int iConnectPort=0, iTransmitPort=0; char *logfile=NULL; memset(sConnectHost, 0, HOSTLEN); memset(sTransmitHost, 0, HOSTLEN); p=argv; while(*p) { if(stricmp(*p, "-log") == 0) { if(testifisvalue(*(p+1))) { logfile = *(++p); } else { printf("[-] ERROR: Must supply logfile name.\r\n"); return; } p++; continue; } p++; } if(logfile !=NULL) { fp=fopen(logfile,"a"); if(fp == NULL ) { printf("[-] ERROR: open logfile"); return; } makelog("====== Start ======\r\n", 22); } // Win Start Winsock. WSADATA wsadata; WSAStartup(MAKEWORD(1, 1), &wsadata); signal(SIGINT, &getctrlc); if(argc > 2) { if(stricmp(argv[1], "-listen") == 0 && argc >= 4) { iConnectPort = atoi(argv[2]); iTransmitPort = atoi(argv[3]); method = 1; } else if(stricmp(argv[1], "-tran") == 0 && argc >= 5) { iConnectPort = atoi(argv[2]); strncpy(sTransmitHost, argv[3], HOSTLEN); iTransmitPort = atoi(argv[4]); method = 2; } else if(stricmp(argv[1], "-slave") == 0 && argc >= 6) { strncpy(sConnectHost, argv[2], HOSTLEN); iConnectPort = atoi(argv[3]); strncpy(sTransmitHost, argv[4], HOSTLEN); iTransmitPort = atoi(argv[5]); method = 3; } } switch(method) { case 1: bind2bind(iConnectPort, iTransmitPort); break; case 2: bind2conn(iConnectPort, sTransmitHost, iTransmitPort); break; case 3: conn2conn(sConnectHost, iConnectPort, sTransmitHost, iTransmitPort); break; default: usage(argv[0]); break; } if(method) { closeallfd(); } WSACleanup(); return; } //************************************************************************************ // // print usage message // //************************************************************************************ VOID usage(char* prog) { printf("[Usage of Packet Transmit:]\r\n"); printf(" %s -<listen|tran|slave> <option> [-log logfile]\n\n", prog); printf("[option:]\n"); printf(" -listen <ConnectPort> <TransmitPort>\n"); printf(" -tran <ConnectPort> <TransmitHost> <TransmitPort>\n"); printf(" -slave <ConnectHost> <ConnectPort> <TransmitHost> <TransmitPort>\n\n"); return; } //************************************************************************************ // // test if is value // //************************************************************************************ int testifisvalue(char *str) { if(str == NULL ) return(0); if(str[0]=='-') return(0); return(1); } //************************************************************************************ // // LocalHost:ConnectPort transmit to LocalHost:TransmitPort // //************************************************************************************ void bind2bind(int port1, int port2) { SOCKET fd1,fd2, sockfd1, sockfd2; struct sockaddr_in client1,client2; int size1,size2; HANDLE hThread=NULL; transocket sock; DWORD dwThreadID; if((fd1=create_socket())==0) return; if((fd2=create_socket())==0) return; printf("[+] Listening port %d ......\r\n",port1); fflush(stdout); if(create_server(fd1, port1)==0) { closesocket(fd1); return; } printf("[+] Listen OK!\r\n"); printf("[+] Listening port %d ......\r\n",port2); fflush(stdout); if(create_server(fd2, port2)==0) { closesocket(fd2); return; } printf("[+] Listen OK!\r\n"); size1=size2=sizeof(struct sockaddr); while(1) { printf("[+] Waiting for Client on port:%d ......\r\n",port1); if((sockfd1 = accept(fd1,(struct sockaddr *)&client1,&size1))<0) { printf("[-] Accept1 error.\r\n"); continue; } printf("[+] Accept a Client on port %d from %s ......\r\n", port1, inet_ntoa(client1.sin_addr)); printf("[+] Waiting another Client on port:%d....\r\n", port2); if((sockfd2 = accept(fd2, (struct sockaddr *)&client2, &size2))<0) { printf("[-] Accept2 error.\r\n"); closesocket(sockfd1); continue; } printf("[+] Accept a Client on port %d from %s\r\n",port2, inet_ntoa(client2.sin_addr)); printf("[+] Accept Connect OK!\r\n"); sock.fd1 = sockfd1; sock.fd2 = sockfd2; hThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)transmitdata, (LPVOID)&sock, 0, &dwThreadID); if(hThread == NULL) { TerminateThread(hThread, 0); return; } Sleep(1000); printf("[+] CreateThread OK!\r\n\n"); } } //************************************************************************************ // // LocalHost:ConnectPort transmit to TransmitHost:TransmitPort // //************************************************************************************ void bind2conn(int port1, char *host, int port2) { SOCKET sockfd,sockfd1,sockfd2; struct sockaddr_in remote; int size; char buffer[1024]; HANDLE hThread=NULL; transocket sock; DWORD dwThreadID; if (port1 > 65535 || port1 < 1) { printf("[-] ConnectPort invalid.\r\n"); return; } if (port2 > 65535 || port2 < 1) { printf("[-] TransmitPort invalid.\r\n"); return; } memset(buffer,0,1024);