/*----------------------------------------------------------------------------
DNS spammer
----------------------------------------------------------------------------*/
#include <stdlib.h> /* srand(), rand(), system() */
#include <string.h> /* strcpy(), strcat(), strlen() */
#include <ctype.h> /* ispunct() */
#include <stdio.h> /* printf() */
#include <time.h> /* time() */

#define	MIN_SALT_LEN	1
#define	MAX_SALT_LEN	4
/*****************************************************************************
*****************************************************************************/
int main(void)
{
	static const char *keywords[] =
	{
/* porn */
		"cunt",	"dick", "porn",	"penis", "vagina", "playboy",
		"clit", "milf", "sex", "fuck", "boner", "semprini",
/* hobbies */
		"stamps", "coins", "collect", "rpg", "games",
		"guns", "quilt", "garden",
/* meds */
		"viagra", "cialis", "cipro", "pepcid", "zantac",
		"tagamet", "prilosec", "nexium", "cardizem", "norvasc",
		"zocor", "lipitor", "crestor", "zetia", "vytorin",
		"caduet", "sudafed", "claritin",
/* consumer electronics */
		"cell", "xbox", "hdtv",
/* Hollywood fluff */
		"brittney", "paris", "gossip", "hollywood",
/* misc */
		"money", "mail", "email", "torrent", "download", "play",
		"gamble", "work", "mp3", "iraq", "democrats", "dnc",
		"republicans", "rnc", "election", "security"
	};
/**/
	unsigned i, j, len1, len2, c;
	char buf[256];

/* re-seed random number generator */
	srand((unsigned)time(NULL));
	for(i = 0; i < 20; i++)
	{
/* formulate command-line whois query */
		strcpy(buf, "whois ");
/* start domain name with random keyword */
		j = rand() % (sizeof(keywords) / sizeof(keywords[0]));
		strcat(buf, keywords[j]);
/* add random-length random-content 'salt' string */
		len1 = strlen(buf);
		len2 = rand() % (MAX_SALT_LEN - MIN_SALT_LEN)
			+ MIN_SALT_LEN + len1;
		for(j = len1; j < len2; j++)
		{
			do
			{
				c = rand() % 36;
				c += (c < 10) ? '0' : ('a' - 10);
/* digits and letters only -- no punctuation */
			} while(ispunct(c));
			buf[j] = c;
		}
		buf[len2] = '\0';
/* .com */
		strcat(buf, ".com");
/* do whois lookup */
		fprintf(stderr, "%s\n", buf);
		system(buf);
	}
	return 0;
}