finger.c

非常高效的扫描器

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

// derived from check_data.c

int finger(char *ip, char *user, int type)
{
 int port = 79;
   char remotestring[512], check[32];
   struct sockaddr_in addr;
   int sockfd;
   addr.sin_family = AF_INET;
   addr.sin_addr.s_addr = inet_addr(ip);
   addr.sin_port=htons(port);
   bzero(check, sizeof(check));
   bzero(remotestring, sizeof(remotestring));
 printf(" &$!$&!@($!- fingering ze h0st %s", ip);
  sockfd = socket(AF_INET, SOCK_STREAM, 0);
  if (connect_timeo(sockfd, (struct sockaddr *)&addr, sizeof(addr), 6) == -1)
        {
        return 0;
        }
if(type == IRIX_LP_CHECK)
     {
	sprintf(remotestring, "lp");
	send(sockfd, remotestring, sizeof(remotestring), 0);
	recv(sockfd, check, 511, 0);
	if(strstr(check, "Never") != NULL)
	  printf("%s: VULN: IRIX box with never-logged-in lp account.\n",
		ip);
	return;
      }
	if(type == ALL_USERS)
	{
	sprintf(remotestring, "\n");
	send(sockfd, remotestring, sizeof(remotestring), 0);
	recv(sockfd, check, 511, 0);
	puts(check);
	return;
	}

	sprintf(remotestring, "%s", user);
	send(sockfd, remotestring, sizeof(remotestring), 0);
	recv(sockfd, check, 511, 0);
	close(sockfd);
	puts(check);
	printf(" -! @#$&!(@&(!@&%(!@% !- \n");
	sleep(2);
}