#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <sys/wait.h>
#include <sys/resource.h>
#include <arpa/inet.h>
#include <assert.h>
#include <ctype.h>
#include <fcntl.h>
#include <signal.h>


int s = -1;

int
readn(void *bufx, int n)
{
  char *buf = bufx;
  while(n > 0){
    int cc = read(s, buf, n);
    if(cc <= 0)
      return -1;
    n -= cc;
    buf += cc;
  }
  return 0;
}

int
readmsg(void *bufx)
{
  unsigned char *buf = bufx;
  if(readn(buf, 4) < 0)
    return -1;
  int n = (buf[2] << 8) | buf[3];
  if(readn(buf+4, n) < 0)
    return -1;
  return n + 4;
}
  

int
main()
{
  signal(SIGPIPE, SIG_IGN);

  struct sockaddr_in sin;
  memset(&sin, 0, sizeof(sin));
  sin.sin_family = AF_INET;
  sin.sin_port = htons(445); // SMB over TCP

  int ss = socket(AF_INET, SOCK_STREAM, 0);
  int yes = 1;
  setsockopt(ss, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes));
  if(bind(ss, (struct sockaddr *)&sin, sizeof(sin)) < 0){
    perror("bind");
    exit(1);
  }
  listen(ss, 10);

  socklen_t sinlen = sizeof(sin);
  s = accept(ss, (struct sockaddr *)&sin, &sinlen);
  if(s < 0){
    perror("accept");
    exit(1);
  }
  close(ss);

  sleep(100);
}