#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>

int main() {
  int sock;
  struct sockaddr_in srv;
  struct addrinfo hints, *addr;

  char pas[256];
  char res[10];
  int reslen = 0;

  memset(&hints, 0, sizeof(hints));
  hints.ai_family = AF_INET; // IPv4
  hints.ai_socktype = SOCK_STREAM; // TCP

  int status = getaddrinfo("076.moe", NULL, &hints, &addr);
  if (status != 0) {
    fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(status));
    exit(1);
  }

  sock = socket(AF_INET, SOCK_STREAM, 0);
  if (sock == -1) {
    perror("ソケットを作成に失敗");
    exit(1);
  }

  srv.sin_addr = ((struct sockaddr_in *)(addr->ai_addr))->sin_addr;
  srv.sin_family = AF_INET;
  srv.sin_port = htons(9951);

  freeaddrinfo(addr);

  if (connect(sock, (struct sockaddr *)&srv, sizeof(srv)) < 0) {
    perror("接続に失敗");
    close(sock);
    exit(1);
  }

  printf("パスワード: ");
  fgets(pas, sizeof(pas), stdin);
  pas[strcspn(pas, "\n")] = 0;

  if (send(sock, pas, strlen(pas), 0) < 0) {
    perror("送信に失敗");
    close(sock);
    exit(1);
  }

  reslen = recv(sock, res, sizeof(res) -1, 0);
  if (reslen < 0) {
    perror("受取に失敗");
    close(sock);
    exit(1);
  }

  res[reslen] = '\0';

  printf("Pwned: %s\n", res);

  close(sock);
  return 0;
}