/*
 * Platon SDG (http://platon.sk/) CVS encrypted password creator
 * =============================================================
 *
 * If you are using this software you are probably requesting CVS
 * account on kepler.fmph.uniba.sk development server. In this case
 * just compile this file with following command:
 *
 *    gcc -lcrypt -pedantic -Wall -o crypt crypt.c
 *
 * Run this utility (ie. by typing ./crypt) and enter password that you
 * want to use for accessing your CVS account. Now copy and paste your
 * encrypted password what should appear on output screen and send it
 * to Platon SDG CVS server administrator:
 *
 *    Lubomir Host <8host@pauli.fmph.uniba.sk>
 *
 * Do not forget to write also username you want to use. Don't forget
 * also to use his GnuPG public key. You should recieve it via e-mail
 * or it should be attached to this program. If you either don't have
 * it, you can download it from following URL:
 *
 *    http://pauli.fmph.uniba.sk/~8host/gpg.key
 *
 * You can import GnuPG key directly with command:
 *
 *    GET http://pauli.fmph.uniba.sk/~8host/gpg.key | gpg --import
 * or
 *    wget -O - http://pauli.fmph.uniba.sk/~8host/gpg.key | gpg --import
 *
 * If some problem occurs or you have some question, don't hesitate
 * to contact us at this e-mail address:
 *
 *    <platon@pobox.sk>
 *
 * That's all folks for now! Thank you for your interest and we are
 * looking for productive cooperation.
 *
 * Utility developed and procedure written
 *    by  Lubomir Host <8host@pauli.fmph.uniba.sk>
 *    and Ondrej Jombik <9jombik@pauli.fmph.uniba.sk>
 *
 * Copyright (c) 2000-2003 Platon SDG, http://platon.sk/
 * Licensed under terms of GNU General Public License.
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/types.h>
#define _XOPEN_SOURCE
#include <unistd.h>

#define KEYBD_LEN 4096

/* KEY -- 2 characters, you can modify it as you like */
#define KEY "Gr"

char *crypt(const char *key, const char *salt);

int main(void)
{
	char *passwd[2];

	if (	   (passwd[1] = getpass("Password: "))     == NULL
			|| (passwd[1] = strdup(passwd[1]))         == NULL
			|| (passwd[0] = getpass("Verification: ")) == NULL)
	{
		if (passwd[1] != NULL)
			free(passwd[1]);

		fputs("Memory allocation failure\n", stderr);
		return 8;
	}

	if (strcmp(passwd[0], passwd[1])) {
		free(passwd[1]);
		fputs("Passwords do not match\n", stderr);
		return 4;
	}

	free(passwd[1]);

	if (strlen(passwd[0]) <= 0) {
		fputs("Empty passwords are not allowed\n", stderr);
		return 2;
	}

	puts("Your encrypted password follows on next line:");
	puts(crypt(passwd[0], KEY));

	return 0;
}

/* vim:set ts=4 */