#include <windows.h>
#include <stdio.h>
 
WSADATA ws;
int d;
char aa[1000]; 
char usr[100];
char paswd[100];
struct sockaddr_in a;
SOCKET s;
int ii;
struct hostent *host;
 
 
void abc(char *p)
{
	FILE *fp = fopen("b.txt","a+");
	fprintf(fp,"%s\n",p);
	fclose(fp);
}
 
_stdcall WinMain(HINSTANCE i, HINSTANCE j, char *k, int l)
{
 
		d = WSAStartup(0x101,&ws);
		sprintf(aa," WSASTARTUP = %d",d);
		abc(aa);
		s = socket(AF_INET,SOCK_STREAM,0);
		sprintf(aa," SOCKET = %d",s);
		abc(aa);
		host=gethostbyname("smartfile.com");
		a.sin_family = AF_INET;
		a.sin_port = htons(21);
		a.sin_addr.s_addr = *((unsigned long*)host->h_addr); 
		d = connect(s, (struct sockaddr *)&a, sizeof( a));
	
    strcat(usr,"USER xyzab\r\n");
		send(s,usr,sizeof(usr),0);
		ii = 1;
		ii = recv(s,aa,1000,0);
		abc(aa);
strcat(paswd,"PASS abcdeg\r\n");
		send(s,paswd,sizeof(paswd),0);
    	ii = 1;
		ii = recv(s,aa,1000,0);
		abc(aa);
}

strcat(usr,"USER xyzab\r\n");
send(s,usr,sizeof(usr),0);

send(s,usr,strlen(usr),0);

 #include <windows.h>
#include <stdio.h>
 
WSADATA ws;
int d;
char aa[1000]; 
char usr[100];
char paswd[100]={0};
char cmd[15]={0};
struct sockaddr_in a;
struct sockaddr_in a1;
SOCKET s;
SOCKET s1;
int ii;
struct hostent *host;
 
 int calcp(char p1[])
{
  int i,k;
    int n;
    char port1[10];
    char port2[10];
    int por;
    i=k=n=por=0;
   while(p1[i] != '(' )
    i++;
    n=0;
    while(    n < 4   )
{
    if( p1[i] == ',')
    n++;
    i++;
}
k=0;
while(p1[i] != ',' )
{
port1[k++]=p1[i];
i++;
}
i++;
port1[k]='\0';
k=0;
while(p1[i] != ')' )
{
port2[k++]=p1[i];
i++;
}
port2[k++]='\0';
k=0;
por= atoi(port1)*256 + atoi(port2);  
}


void abc(char *p)
{
	FILE *fp = fopen("b.txt","a+");
	fprintf(fp,"%s\n",p);
	fclose(fp);
}
 
_stdcall WinMain(HINSTANCE i, HINSTANCE j, char *k, int l)
{
 
		int  port=0;
        d = WSAStartup(0x101,&ws);
		sprintf(aa," WSASTARTUP = %d",d);
		abc(aa);
		s = socket(AF_INET,SOCK_STREAM,0);
		sprintf(aa," SOCKET = %d",s);
		abc(aa);
		host=gethostbyname("smartfile.com");
		a.sin_family = AF_INET;
		a.sin_port = htons(21);
		a.sin_addr.s_addr = *((unsigned long*)host->h_addr); 
		d = connect(s, (struct sockaddr *)&a, sizeof( a));
	     strcpy(usr,"USER xxxxxxx\r\n");
		send(s,usr,strlen(usr),0);
		sleep(1000);
		ii = 1;
		ii = recv(s,aa,1000,0);
		abc(aa);
		strcpy(paswd,"PASS xxxxxx\r\n");
		send(s,paswd,strlen(paswd),0);
		sleep(1000);
    	ii = 1;
		ii = recv(s,aa,1000,0);
		abc(aa);
		send(s,"TYPE I\r\n",8,0);
		sleep(1000);
		ii = 1;
		ii = recv(s,aa,1000,0);
      	abc(aa);
		send(s,"PASV\r\n",6,0);
		sleep(1000);
		ii = 1;
		ii = recv(s,aa,1000,0);
		abc(aa);
		port=calcp(aa);
		s1 = socket(AF_INET,SOCK_STREAM,0);
		sprintf(aa," SOCKET = %d",s1);
		abc(aa);
		a1.sin_family = AF_INET;
		a1.sin_port = htons(port);
		a1.sin_addr.s_addr = *((unsigned long*)host->h_addr); 
		d = connect(s1, (struct sockaddr *)&a1, sizeof( a1));
		strcpy(cmd,"STOR /b.txt\r\n");
		send(s1,cmd,strlen(cmd),0);
		sleep(1000);
    	WSACleanup(); 
 }