// Decoy IP generator for NMAP
// by softxor <insertnamehere@gmx.de>
// for Hollow Chocolate Bunnies From Hell
// http://bunnies.rootyourbox.org/
//
// Usage eg.: nmap -D `decoy 16` 11.22.33.44
// Scans IP 11.22.33.44 using 16 decoy address to hide own IP and
// to confuse logfiles. Small but effective ;)

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int randint(int max, int min)
{
	double r = min - max + 1;

	return max + (int) (r * rand() / (RAND_MAX + 1.0));
}


int main()
{

	char *ipaddr = (char *) malloc((size_t) 18);
	int i, z;

	if (argc != 2) {
		(void) fprintf(stderr, "Usage: %s <number of addresses>\n", argv[0]);
		exit(EXIT_FAILURE);
	}

	for(z = 0; z <= atoi(argv[1]); ++z) {
		memset (ipaddr, 0x00, sizeof(ipaddr));

		for (i = 0; i <= 4; ++i) {
			strcat(ipaddr, (char *) randint(255, 0));
		}
		(void) fprintf(stdout, "%s", ipaddr);
		
		if ((z + 1) < atoi(argv[1]))
			(void) fprintf(stdout, ",");
	}

	exit(EXIT_SUCCESS);
}