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/* Copyright (c) 2004-2018 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 "module-dir.h"
#include <ctype.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#define DEFAULT_SCHEME "CRYPT"
static struct module *modules = NULL;
static void cmd_pw(struct doveadm_cmd_context *cctx)
{
const char *hash = NULL;
const char *scheme = NULL;
const char *plaintext = NULL;
const char *test_hash = NULL;
bool list_schemes = FALSE, reverse_verify = FALSE;
int64_t rounds_int64;
struct module_dir_load_settings mod_set;
struct password_generate_params gen_params;
i_zero(&gen_params);
password_schemes_init();
i_zero(&mod_set);
mod_set.abi_version = DOVECOT_ABI_VERSION;
mod_set.require_init_funcs = TRUE;
mod_set.ignore_dlopen_errors = TRUE;
mod_set.debug = doveadm_debug;
modules = module_dir_load_missing(modules, AUTH_MODULE_DIR, NULL, &mod_set);
module_dir_init(modules);
(void)doveadm_cmd_param_bool(cctx, "list", &list_schemes);
(void)doveadm_cmd_param_str(cctx, "plaintext", &plaintext);
if (doveadm_cmd_param_int64(cctx, "rounds", &rounds_int64)) {
if (rounds_int64 > UINT_MAX)
i_fatal("Invalid number of rounds: %"PRId64, rounds_int64);
gen_params.rounds = rounds_int64;
}
(void)doveadm_cmd_param_str(cctx, "scheme", &scheme);
if (doveadm_cmd_param_str(cctx, "test-hash", &test_hash))
reverse_verify = TRUE;
(void)doveadm_cmd_param_str(cctx, "user", &gen_params.user);
(void)doveadm_cmd_param_bool(cctx, "reverse-verify", &reverse_verify);
if (list_schemes) {
ARRAY_TYPE(password_scheme_p) arr;
const struct password_scheme *const *schemes;
unsigned int i, count;
t_array_init(&arr, 30);
password_schemes_get(&arr);
schemes = array_get(&arr, &count);
for (i = 0; i < count; i++)
printf("%s ", schemes[i]->name);
printf("\n");
module_dir_unload(&modules);
password_schemes_deinit();
return;
}
scheme = scheme == NULL ? DEFAULT_SCHEME : t_str_ucase(scheme);
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)
lib_exit(1);
plaintext = NULL;
}
}
if (!password_generate_encoded(plaintext, &gen_params, 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, &gen_params, 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);
}
module_dir_unload(&modules);
password_schemes_deinit();
}
struct doveadm_cmd_ver2 doveadm_cmd_pw = {
.name = "pw",
.cmd = cmd_pw,
.usage = "[-l] [-p plaintext] [-r rounds] [-s scheme] [-t hash] [-u user] [-V]",
DOVEADM_CMD_PARAMS_START
DOVEADM_CMD_PARAM('l', "list", CMD_PARAM_BOOL, 0)
DOVEADM_CMD_PARAM('p', "plaintext", CMD_PARAM_STR, 0)
DOVEADM_CMD_PARAM('r', "rounds", CMD_PARAM_INT64, 0)
DOVEADM_CMD_PARAM('s', "scheme", CMD_PARAM_STR, 0)
DOVEADM_CMD_PARAM('t', "test-hash", CMD_PARAM_STR, 0)
DOVEADM_CMD_PARAM('u', "user", CMD_PARAM_STR, 0)
DOVEADM_CMD_PARAM('V', "reverse-verify", CMD_PARAM_BOOL, 0)
DOVEADM_CMD_PARAMS_END
};
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