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/* Copyright (c) 2004-2013 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "array.h"
#include "password-scheme.h"
#include "randgen.h"
#include "doveadm.h"
#include "askpass.h"
#include <ctype.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#define DEFAULT_SCHEME "CRAM-MD5"
static void cmd_pw(int argc, char *argv[])
{
const char *hash = NULL;
const char *user = NULL;
const char *scheme = NULL;
const char *plaintext = NULL;
const char *test_hash = NULL;
bool list_schemes = FALSE, reverse_verify = FALSE;
unsigned int rounds = 0;
int c;
random_init();
password_schemes_init();
while ((c = getopt(argc, argv, "lp:r:s:t:u:V")) > 0) {
switch (c) {
case 'l':
list_schemes = 1;
break;
case 'p':
plaintext = optarg;
break;
case 'r':
if (str_to_uint(optarg, &rounds) < 0)
i_fatal("Invalid number of rounds: %s", optarg);
break;
case 's':
scheme = optarg;
break;
case 't':
test_hash = optarg;
reverse_verify = TRUE;
break;
case 'u':
user = optarg;
break;
case 'V':
reverse_verify = TRUE;
break;
case '?':
default:
help(&doveadm_cmd_pw);
}
}
if (list_schemes) {
const struct password_scheme *const *schemes;
unsigned int i, count;
schemes = array_get(&password_schemes, &count);
for (i = 0; i < count; i++)
printf("%s ", schemes[i]->name);
printf("\n");
exit(0);
}
if (argc != optind)
help(&doveadm_cmd_pw);
scheme = scheme == NULL ? DEFAULT_SCHEME : t_str_ucase(scheme);
if (rounds > 0)
password_set_encryption_rounds(rounds);
if (test_hash != NULL && plaintext == NULL)
plaintext = t_askpass("Enter password to verify: ");
while (plaintext == NULL) {
const char *check;
static int lives = 3;
plaintext = t_askpass("Enter new password: ");
check = t_askpass("Retype new password: ");
if (strcmp(plaintext, check) != 0) {
i_error("Passwords don't match!");
if (--lives == 0)
exit(1);
plaintext = NULL;
}
}
if (!password_generate_encoded(plaintext, user, scheme, &hash))
i_fatal("Unknown scheme: %s", scheme);
if (reverse_verify) {
const unsigned char *raw_password;
size_t size;
const char *error;
if (test_hash != NULL) {
scheme = password_get_scheme(&test_hash);
if (scheme == NULL)
i_fatal("Missing {scheme} prefix from hash");
hash = test_hash;
}
if (password_decode(hash, scheme, &raw_password, &size,
&error) <= 0)
i_fatal("reverse decode check failed: %s", error);
if (password_verify(plaintext, user, scheme,
raw_password, size, &error) <= 0) {
i_fatal("reverse password verification check failed: %s",
error);
}
printf("{%s}%s (verified)\n", scheme, hash);
} else {
printf("{%s}%s\n", scheme, hash);
}
password_schemes_deinit();
random_deinit();
}
struct doveadm_cmd doveadm_cmd_pw = {
cmd_pw, "pw",
"[-l] [-p plaintext] [-r rounds] [-s scheme] [-t hash] [-u user] [-V]"
};
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