#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[])
{
char host1[HOSTLEN],host2[HOSTLEN];
int port1=0,port2=0,method=0;
int length;
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(strcmp(*p,"-v")==0)
{
printf("Socket data transport tool.\r\nVersion:%s\r\n",VERSION);
p++;
continue;
}
if(strcmp(*p,"-h1")==0)
{
if(testifisvalue(*(p+1))==1)
{
length=(strlen(*(p+1))>HOSTLEN-1)?HOSTLEN-1:strlen(*(p+1));
strncpy(host1,*(++p),length);
}
p++;
continue;
}
if(strcmp(*p,"-h2")==0)
{
if(testifisvalue(*(p+1))==1)
{
length=(strlen(*(p+1))>HOSTLEN-1)?HOSTLEN-1:strlen(*(p+1));
strncpy(host2,*(++p),length);
}
p++;
continue;
}
if(strcmp(*p,"-p1")==0)
{
if(testifisvalue(*(p+1))==1)
port1=atoi(*(++p));
p++;
continue;
}
if(strcmp(*p,"-p2")==0)
{
if(testifisvalue(*(p+1))==1)
port2=atoi(*(++p));
p++;
continue;
}
if(strcmp(*p,"-m")==0)
{
if(testifisvalue(*(p+1))==1)
method=atoi(*(++p));
p++;
continue;
}
if(strcmp(*p,"-log")==0)
{
if(testifisvalue(*(p+1))==1)
logfile=*(++p);
else
{
printf("[ERROR]:must supply logfile name\r\n");
exit(0);
}
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);
switch(method)
{
case 0:
usage(argv[0]);
break;
case 1:
if((port1==0) || (port2==0))
{
printf("[ERROR]:must supply PORT1 and PORT2.\r\n");
break;
}
if(strlen(host2)==0)
{
printf("[ERROR]:must supply HOST2.\r\n");
break;
}
bind2conn(port1,host2,port2);
break;
case 2:
if((port1==0) || (port2==0))
{
printf("[ERROR]:must supply PORT1 and PORT2.\r\n");
break;
}
bind2bind(port1,port2);
break;
case 3:
if((port1==0) || (port2==0))
{
printf("[ERROR]:must supply PORT1 and PORT2.\r\n");
break;
}
if(strlen(host1)==0)
{
printf("[ERROR]:must supply HOST1.\r\n");
break;
}
if(strlen(host2)==0)
{
printf("[ERROR]:must supply HOST2.\r\n");
break;
}
conn2conn(host1,port1,host2,port2);
break;
default:
usage(argv[0]);
}
if(method != 0)
{
closeallfd();
}
WSACleanup();
return;
}
//************************************************************************************
//
// print usage message
//
//************************************************************************************
VOID usage(char* prog)
{
printf("Socket data transport tool\r\n");
printf("by bkbll(bkbll@cnhonker.net)\r\n\r\n");
printf("Usage:%s -m method [-h1 host1] -p1 port1 [-h2 host2] -p2 port2 [-v] [-log filename]\r\n",prog);
printf(" -v: version\r\n");
printf(" -h1: host1\r\n");
printf(" -h2: host2\r\n");
printf(" -p1: port1\r\n");
printf(" -p2: port2\r\n");
printf(" -log: log the data\r\n");
printf(" -m: the action method for this tool\r\n");
printf(" 1: listen on PORT1 and connect to HOST2:PORT2\r\n");
printf(" 2: listen on PORT1 and PORT2\r\n");
printf(" 3: connect to HOST1:PORT1 and HOST2:PORT2\r\n");
closeallfd();
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;
