check_data.c

非常高效的扫描器

/* check if a file exists on a remote httpd server... return 1
 * if it exists and 0 if it doesn't.. take the ip address as the first
 * arg and the pathname to prog as the second
 *
 */

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


int check_data(char *ip, char *cgi, char *checkstring, int port)
{
   char remotestring[32], check[32];
   struct sockaddr_in addr;
   int sockfd;
   int handler;   
   addr.sin_family = AF_INET;
   addr.sin_addr.s_addr = inet_addr(ip);
   addr.sin_port=htons(port);
   handler = ((strcmp(cgi, "/cgi-bin/handler") == 0));
  sockfd = socket(AF_INET, SOCK_STREAM, 0);
  if (connect_timeo(sockfd, (struct sockaddr *)&addr, sizeof(addr), 6) == -1)
	{
	return 0;
	}   
if(port == 80)
  {
   sprintf(remotestring, "GET %s\n", cgi);
   #ifdef DEBUG
   printf("DEBUG: send string: %s\n", remotestring);
   #endif
   send(sockfd, remotestring, sizeof(remotestring), 0);
  }
   recv(sockfd, check, 31, 0);
   close(sockfd);
   if(!handler) {
   if(strncmp(checkstring, check, 12) == 0) /* fix this */
     return 1;
   else
   return 0;
   }
   else {
     if((strstr(check, "OutBox")) != NULL) {
       return 1;
     }
       return 0;
   }

}