/* Oedipus Scan, Version 1.1
 * Simple port scanner in C
 * Works rediculously fast inside the network
 * Does not work over the internet
 * WILL get caught by most IDS systems
 * Updates are in development later today
 * Please see www.frsec.com for the latest version, etc.
 *
 * -- Oedipus, www.frsec.com
 *
 * You will never see....the horrors which I have sufffered and done
 */

#include <stdio.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

int main(int argc, char *argv[]){
	if(argc < 2){
 printf("Usage: %s <host IP> [start port] [end port]\n\n", argv[0]);
 return 0;
	}
	int port, sock;
	double port2;
	char *ip;
	ip = argv[1];
	port = atoi(argv[2]);
	port2 = atoi(argv[3]);
  printf("\t--------------------\n\tOedScan, Version 1.1\n\t--------------------\n\n");     
  printf("\t------------\n"); 
	while(port <= port2){
     struct sockaddr_in shizBAM;
 
     if(( sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0){
        printf("\n\nSocket initiation failed...\n\n");
        return 0;
     }  
    memset(&shizBAM, 0, sizeof(shizBAM));
    shizBAM.sin_family   = AF_INET;
    shizBAM.sin_addr.s_addr = inet_addr(ip);
    shizBAM.sin_port    = htons(port);
  if(connect(sock, (struct sockaddr *) &shizBAM, sizeof(shizBAM)) != -1){
    printf("\t| Port: %d |\n", port);
	close(sock);
    }else{
 close(sock);
	}
  port++;
	} 
printf("\t------------\n\tScan Completed\n\n");
}