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/* vi: set sw=4 ts=4: */
/*
* Module: rl_passwd.cc
*
* **** License ****
* Version: VPL 1.0
*
* The contents of this file are subject to the Vyatta Public License
* Version 1.0 ("License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.vyatta.com/vpl
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* This code was originally developed by Vyatta, Inc.
* Portions created by Vyatta are Copyright (C) 2005, 2006, 2007 Vyatta, Inc.
* All Rights Reserved.
*
* Author: Michael Larson
* Date: 2005
* Description:
*
* **** End License ****
*
*/
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <utime.h>
#include <syslog.h>
#include <time.h>
#include <sys/types.h>
#include <shadow.h>
#include <pwd.h>
#include <sys/resource.h>
#include <errno.h>
static char crypt_passwd[128];
static int new_password(char * password);
static char *pw_encrypt(const char *clear, const char *salt);
void usage()
{
printf("vyatta_pwd plainpwd username\n");
}
int main(int argc, char **argv)
{
char *name;
char * password;
if (argc != 3) {
usage();
return(1);
}
/* "name" is unused */
name = argv[2];
password = argv[1];
if (new_password(password)) {
printf("error in password encrypt\n");
return(1);
}
// printf("%s, %s\n",name,password);
printf("%s",crypt_passwd);
return (0);
}
static int i64c(int i)
{
if (i <= 0)
return ('.');
if (i == 1)
return ('/');
if (i >= 2 && i < 12)
return ('0' - 2 + i);
if (i >= 12 && i < 38)
return ('A' - 12 + i);
if (i >= 38 && i < 63)
return ('a' - 38 + i);
return ('z');
}
static char *crypt_make_salt(void)
{
time_t now;
static unsigned long x;
static char result[3];
time(&now);
x += now + getpid() + clock();
result[0] = i64c(((x >> 18) ^ (x >> 6)) & 077);
result[1] = i64c(((x >> 12) ^ x) & 077);
result[2] = '\0';
return result;
}
static int new_password(char * password)
{
char *cp;
char salt[12]; /* "$N$XXXXXXXX" or "XX" */
char orig[200];
char pass[200];
orig[0] = '\0';
cp = (char*)password;
strncpy(pass, cp, sizeof(pass));
memset(cp, 0, strlen(cp));
memset(cp, 0, strlen(cp));
memset(orig, 0, sizeof(orig));
memset(salt, 0, sizeof(salt));
strcpy(salt, "$1$");
strcat(salt, crypt_make_salt());
strcat(salt, crypt_make_salt());
strcat(salt, crypt_make_salt());
strcat(salt, crypt_make_salt());
cp = pw_encrypt(pass, salt);
memset(pass, 0, sizeof pass);
strncpy(crypt_passwd, cp, sizeof(crypt_passwd));
return 0;
}
char *pw_encrypt(const char *clear, const char *salt)
{
static char cipher[128];
char *cp;
cp = (char *) crypt(clear, salt);
/* if crypt (a nonstandard crypt) returns a string too large,
truncate it so we don't overrun buffers and hope there is
enough security in what's left */
strncpy(cipher, cp, sizeof(cipher));
return cipher;
}
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