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/* Copyright (c) 2013-2018 Dovecot authors, see the included COPYING file */
#include "auth-common.h"
#include "passdb.h"
#include "array.h"
#include "str.h"
#include "var-expand.h"
#include "dict.h"
#include "password-scheme.h"
#include "auth-cache.h"
#include "db-dict.h"
#include <string.h>
struct dict_passdb_module {
struct passdb_module module;
struct dict_connection *conn;
};
struct passdb_dict_request {
struct auth_request *auth_request;
union {
verify_plain_callback_t *verify_plain;
lookup_credentials_callback_t *lookup_credentials;
} callback;
};
static int
dict_query_save_results(struct auth_request *auth_request,
struct dict_connection *conn,
struct db_dict_value_iter *iter)
{
const char *key, *value, *error;
while (db_dict_value_iter_next(iter, &key, &value)) {
if (value != NULL) {
auth_request_set_field(auth_request, key, value,
conn->set.default_pass_scheme);
}
}
if (db_dict_value_iter_deinit(&iter, &error) < 0) {
e_error(authdb_event(auth_request), "%s", error);
return -1;
}
return 0;
}
static enum passdb_result
passdb_dict_lookup_key(struct auth_request *auth_request,
struct dict_passdb_module *module)
{
struct db_dict_value_iter *iter;
int ret;
ret = db_dict_value_iter_init(module->conn, auth_request,
&module->conn->set.passdb_fields,
&module->conn->set.parsed_passdb_objects,
&iter);
if (ret < 0)
return PASSDB_RESULT_INTERNAL_FAILURE;
else if (ret == 0) {
auth_request_log_unknown_user(auth_request, AUTH_SUBSYS_DB);
return PASSDB_RESULT_USER_UNKNOWN;
} else {
if (dict_query_save_results(auth_request, module->conn, iter) < 0)
return PASSDB_RESULT_INTERNAL_FAILURE;
if (auth_request->passdb_password == NULL &&
!auth_fields_exists(auth_request->fields.extra_fields,
"nopassword")) {
return auth_request_password_missing(auth_request);
} else {
return PASSDB_RESULT_OK;
}
}
}
static void passdb_dict_lookup_pass(struct passdb_dict_request *dict_request)
{
struct auth_request *auth_request = dict_request->auth_request;
struct passdb_module *_module = auth_request->passdb->passdb;
struct dict_passdb_module *module =
(struct dict_passdb_module *)_module;
const char *password = NULL, *scheme = NULL;
enum passdb_result passdb_result;
if (array_count(&module->conn->set.passdb_fields) == 0 &&
array_count(&module->conn->set.parsed_passdb_objects) == 0) {
e_error(authdb_event(auth_request),
"No passdb_objects or passdb_fields specified");
passdb_result = PASSDB_RESULT_INTERNAL_FAILURE;
} else {
passdb_result = passdb_dict_lookup_key(auth_request, module);
}
if (passdb_result == PASSDB_RESULT_OK) {
/* passdb_password may change on the way,
so we'll need to strdup. */
password = t_strdup(auth_request->passdb_password);
scheme = password_get_scheme(&password);
/* auth_request_set_field() sets scheme */
i_assert(password == NULL || scheme != NULL);
}
if (auth_request->wanted_credentials_scheme != NULL) {
passdb_handle_credentials(passdb_result, password, scheme,
dict_request->callback.lookup_credentials,
auth_request);
} else {
if (password != NULL) {
passdb_result =
auth_request_password_verify(auth_request,
auth_request->mech_password,
password, scheme, AUTH_SUBSYS_DB);
}
dict_request->callback.verify_plain(passdb_result,
auth_request);
}
}
static void dict_verify_plain(struct auth_request *request,
const char *password ATTR_UNUSED,
verify_plain_callback_t *callback)
{
struct passdb_dict_request *dict_request;
dict_request = p_new(request->pool, struct passdb_dict_request, 1);
dict_request->auth_request = request;
dict_request->callback.verify_plain = callback;
passdb_dict_lookup_pass(dict_request);
}
static void dict_lookup_credentials(struct auth_request *request,
lookup_credentials_callback_t *callback)
{
struct passdb_dict_request *dict_request;
dict_request = p_new(request->pool, struct passdb_dict_request, 1);
dict_request->auth_request = request;
dict_request->callback.lookup_credentials = callback;
passdb_dict_lookup_pass(dict_request);
}
static struct passdb_module *
passdb_dict_preinit(pool_t pool, const char *args)
{
struct dict_passdb_module *module;
struct dict_connection *conn;
module = p_new(pool, struct dict_passdb_module, 1);
module->conn = conn = db_dict_init(args);
module->module.blocking = TRUE;
module->module.default_cache_key = auth_cache_parse_key(pool,
db_dict_parse_cache_key(&conn->set.keys, &conn->set.passdb_fields,
&conn->set.parsed_passdb_objects));
module->module.default_pass_scheme = conn->set.default_pass_scheme;
return &module->module;
}
static void passdb_dict_deinit(struct passdb_module *_module)
{
struct dict_passdb_module *module =
(struct dict_passdb_module *)_module;
db_dict_unref(&module->conn);
}
struct passdb_module_interface passdb_dict = {
"dict",
passdb_dict_preinit,
NULL,
passdb_dict_deinit,
dict_verify_plain,
dict_lookup_credentials,
NULL
};
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