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#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

void error(char *msg)
{
  perror(msg);
  exit(0);
} 

int main(int argc, char *argv[])
{
  char passwd[128],user[32];
  int sockfd, portno, n;
  struct sockaddr_in serv_addr;
  struct hostent *server;     
  char buffer[256];
  
  if (argc != 3) {
    fprintf(stderr,"Usage: %s hostname port\n Using bolero:12012\n", 
	    argv[0]);
    portno=12012;
    server = gethostbyname("bolero");
  } else { 
    portno = atoi(argv[2]);
    sockfd = socket(AF_INET, SOCK_STREAM, 0);
    server = gethostbyname(argv[1]);
  }
  
  sockfd = socket(AF_INET, SOCK_STREAM, 0);
  if (sockfd < 0) {
    error("ERROR opening socket");
    
    if (server == NULL) 
      fprintf(stderr,"ERROR, no such host\n");
    exit(0);
  }
  
  bzero((char *) &serv_addr, sizeof(serv_addr));
  serv_addr.sin_family = AF_INET;
  bcopy((char *)server->h_addr,
	(char *)&serv_addr.sin_addr.s_addr,
	server->h_length);

  serv_addr.sin_port = htons(portno);
  
  if (connect(sockfd,(struct sockaddr *)&serv_addr,sizeof(serv_addr)) < 0) {
    close(sockfd);
    error("ERROR connecting");
  }
  
  printf("User: ");
  scanf("%s",user);
  sprintf(buffer,"USER %s",user);
  printf("Password: ");
  scanf("%s",passwd);
  n=write(sockfd,buffer,128);
  
  if (n < 0)
    error("ERROR writing to socket");
  
  bzero(buffer,256);
  n = read(sockfd,buffer,255);
  
  if (n < 0)
    error("ERROR reading from socket");
  
  printf("%s\n",buffer);
  
  // prep/send pass
  
  passwd[31]=0;
  
  printf("send pass: %s\n",passwd);
  n=write(sockfd,passwd,128);
  
  if (n < 0)
    error("ERROR writing to socket");
  
  bzero(buffer,256);
  n = read(sockfd,buffer,255);
  if (n < 0)
    error("ERROR reading from socket");
  printf("%s\n",buffer);
  return 0;
}