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/*
** Copyright 1998 - 2006 Double Precision, Inc.
** See COPYING for distribution information.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/types.h>
#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#if HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#if HAVE_MD5
#include "md5/md5.h"
#endif
#if HAVE_HMAC
#include "libhmac/hmac.h"
#endif
#include <string.h>
#include <stdio.h>
#include <signal.h>
#include <stdlib.h>
#if HAVE_TERMIOS_H
#include <termios.h>
#endif
#if HAVE_CRYPT_H
#include <crypt.h>
#endif
#if HAVE_CRYPT
#if NEED_CRYPT_PROTOTYPE
extern char *crypt(const char *, const char *);
#endif
#endif
extern char userdb_hex64[];
#ifdef RANDOM
extern void userdb_get_random(char *buf, unsigned n);
#endif
#if HAVE_MD5
char *userdb_mkmd5pw(const char *);
#endif
/*
** Where possible, we turn off echo when entering the password.
** We set up a signal handler to catch signals and restore the echo
** prior to exiting.
*/
#if HAVE_TERMIOS_H
static struct termios tios;
static int have_tios;
static RETSIGTYPE sighandler(int signum)
{
if (write(1, "\n", 1) < 0)
; /* ignore gcc warning */
tcsetattr(0, TCSANOW, &tios);
_exit(0);
#if RETSIGTYPE != void
return (0);
#endif
}
#endif
static void read_pw(char *buf)
{
int n, c;
n=0;
while ((c=getchar()) != EOF && c != '\n')
if (n < BUFSIZ-1)
buf[n++]=c;
if (c == EOF && n == 0) exit(1);
buf[n]=0;
}
int main(int argc, char **argv)
{
int n=1;
int md5=0;
char buf[BUFSIZ];
char salt[9];
#if HAVE_HMAC
struct hmac_hashinfo *hmac=0;
#endif
while (n < argc)
{
if (strcmp(argv[n], "-md5") == 0)
{
md5=1;
++n;
continue;
}
#if HAVE_HMAC
if (strncmp(argv[n], "-hmac-", 6) == 0)
{
int i;
for (i=0; hmac_list[i] &&
strcmp(hmac_list[i]->hh_name, argv[n]+6); i++)
;
if (hmac_list[i])
{
hmac=hmac_list[i];
++n;
continue;
}
}
#endif
fprintf(stderr, "%s: invalid argument.\n", argv[0]);
exit(1);
}
/* Read the password */
#if HAVE_TERMIOS_H
have_tios=0;
if (tcgetattr(0, &tios) == 0)
{
struct termios tios2;
char buf2[BUFSIZ];
have_tios=1;
signal(SIGINT, sighandler);
signal(SIGHUP, sighandler);
tios2=tios;
tios2.c_lflag &= ~ECHO;
tcsetattr(0, TCSANOW, &tios2);
for (;;)
{
if (write(2, "Password: ", 10) < 0)
; /* ignore gcc warning */
read_pw(buf);
if (write(2, "\nReenter password: ", 19) < 0)
; /* ignore gcc warning */
read_pw(buf2);
if (strcmp(buf, buf2) == 0) break;
if (write(2, "\nPasswords don't match.\n\n", 25) < 0)
; /* ignore gcc warning */
}
}
else
#endif
read_pw(buf);
#if HAVE_TERMIOS_H
if (have_tios)
{
if (write(2, "\n", 1) < 0)
; /* ignore gcc warning */
tcsetattr(0, TCSANOW, &tios);
signal(SIGINT, SIG_DFL);
signal(SIGHUP, SIG_DFL);
}
#endif
/* Set the password */
#if HAVE_HMAC
if (hmac)
{
unsigned char *p=malloc(hmac->hh_L*2);
unsigned i;
if (!p)
{
perror("malloc");
exit(1);
}
hmac_hashkey(hmac, buf, strlen(buf), p, p+hmac->hh_L);
for (i=0; i<hmac->hh_L*2; i++)
printf("%02x", (int)p[i]);
printf("\n");
exit(0);
}
#endif
#if HAVE_CRYPT
#else
md5=1;
#endif
#if HAVE_MD5
if (md5)
{
printf("%s\n", userdb_mkmd5pw(buf));
exit(0);
}
#endif
#ifdef RANDOM
userdb_get_random(salt, 2);
salt[0]=userdb_hex64[salt[0] & 63];
salt[1]=userdb_hex64[salt[0] & 63];
#else
{
time_t t;
int i;
time(&t);
t ^= getpid();
salt[0]=0;
salt[1]=0;
for (i=0; i<6; i++)
{
salt[0] <<= 1;
salt[1] <<= 1;
salt[0] |= (t & 1);
t >>= 1;
salt[1] |= (t & 1);
t >>= 1;
}
salt[0]=userdb_hex64[(unsigned)salt[0]];
salt[1]=userdb_hex64[(unsigned)salt[1]];
}
#endif
#if HAVE_CRYPT
printf("%s\n", crypt(buf, salt));
fflush(stdout);
#endif
return (0);
}
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