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/* Copyright (c) 2013-2018 Dovecot authors, see the included COPYING file */
#include "auth-common.h"
#include "userdb.h"
#include "ioloop.h"
#include "array.h"
#include "str.h"
#include "auth-cache.h"
#include "db-dict.h"
#include <dict.h>
struct dict_userdb_module {
struct userdb_module module;
struct dict_connection *conn;
};
struct dict_userdb_iterate_context {
struct userdb_iterate_context ctx;
userdb_callback_t *userdb_callback;
const char *key_prefix;
size_t key_prefix_len;
struct dict_iterate_context *iter;
};
static int
dict_query_save_results(struct auth_request *auth_request,
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_userdb_field(auth_request, key, value);
}
if (db_dict_value_iter_deinit(&iter, &error) < 0) {
e_error(authdb_event(auth_request), "%s", error);
return -1;
}
return 0;
}
static void userdb_dict_lookup(struct auth_request *auth_request,
userdb_callback_t *callback)
{
struct userdb_module *_module = auth_request->userdb->userdb;
struct dict_userdb_module *module =
(struct dict_userdb_module *)_module;
struct db_dict_value_iter *iter;
enum userdb_result userdb_result;
int ret;
if (array_count(&module->conn->set.userdb_fields) == 0 &&
array_count(&module->conn->set.parsed_userdb_objects) == 0) {
e_error(authdb_event(auth_request),
"No userdb_objects or userdb_fields specified");
callback(USERDB_RESULT_INTERNAL_FAILURE, auth_request);
return;
}
ret = db_dict_value_iter_init(module->conn, auth_request,
&module->conn->set.userdb_fields,
&module->conn->set.parsed_userdb_objects,
&iter);
if (ret < 0)
userdb_result = USERDB_RESULT_INTERNAL_FAILURE;
else if (ret == 0) {
auth_request_log_unknown_user(auth_request, AUTH_SUBSYS_DB);
userdb_result = USERDB_RESULT_USER_UNKNOWN;
} else {
if (dict_query_save_results(auth_request, iter) < 0)
userdb_result = USERDB_RESULT_INTERNAL_FAILURE;
else
userdb_result = USERDB_RESULT_OK;
}
callback(userdb_result, auth_request);
}
static struct userdb_iterate_context *
userdb_dict_iterate_init(struct auth_request *auth_request,
userdb_iter_callback_t *callback, void *context)
{
struct userdb_module *_module = auth_request->userdb->userdb;
struct dict_userdb_module *module =
(struct dict_userdb_module *)_module;
struct dict_userdb_iterate_context *ctx;
string_t *path;
const char *error;
ctx = i_new(struct dict_userdb_iterate_context, 1);
ctx->ctx.auth_request = auth_request;
ctx->ctx.callback = callback;
ctx->ctx.context = context;
auth_request_ref(auth_request);
if (*module->conn->set.iterate_prefix == '\0') {
if (!module->conn->set.iterate_disable) {
e_error(authdb_event(auth_request),
"iterate: iterate_prefix not set");
ctx->ctx.failed = TRUE;
}
return &ctx->ctx;
}
path = t_str_new(128);
str_append(path, DICT_PATH_SHARED);
if (auth_request_var_expand(path, module->conn->set.iterate_prefix,
auth_request, NULL, &error) <= 0) {
e_error(authdb_event(auth_request),
"Failed to expand iterate_prefix=%s: %s",
module->conn->set.iterate_prefix, error);
ctx->ctx.failed = TRUE;
return &ctx->ctx;
}
ctx->key_prefix = p_strdup(auth_request->pool, str_c(path));
ctx->key_prefix_len = strlen(ctx->key_prefix);
struct dict_op_settings set = {
.username = auth_request->fields.user,
};
ctx->iter = dict_iterate_init(module->conn->dict, &set, ctx->key_prefix, 0);
e_debug(authdb_event(auth_request),
"iterate: prefix=%s", ctx->key_prefix);
return &ctx->ctx;
}
static const char *
userdb_dict_get_user(struct dict_userdb_iterate_context *ctx, const char *key)
{
i_assert(strncmp(key, ctx->key_prefix, ctx->key_prefix_len) == 0);
return key + ctx->key_prefix_len;
}
static void userdb_dict_iterate_next(struct userdb_iterate_context *_ctx)
{
struct dict_userdb_iterate_context *ctx =
(struct dict_userdb_iterate_context *)_ctx;
const char *key, *value;
if (ctx->iter != NULL && dict_iterate(ctx->iter, &key, &value))
_ctx->callback(userdb_dict_get_user(ctx, key), _ctx->context);
else
_ctx->callback(NULL, _ctx->context);
}
static int userdb_dict_iterate_deinit(struct userdb_iterate_context *_ctx)
{
struct dict_userdb_iterate_context *ctx =
(struct dict_userdb_iterate_context *)_ctx;
const char *error;
int ret = _ctx->failed ? -1 : 0;
if (dict_iterate_deinit(&ctx->iter, &error) < 0) {
e_error(authdb_event(_ctx->auth_request),
"dict_iterate(%s) failed: %s",
ctx->key_prefix, error);
ret = -1;
}
auth_request_unref(&ctx->ctx.auth_request);
i_free(ctx);
return ret;
}
static struct userdb_module *
userdb_dict_preinit(pool_t pool, const char *args)
{
struct dict_userdb_module *module;
struct dict_connection *conn;
module = p_new(pool, struct dict_userdb_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.userdb_fields,
&conn->set.parsed_userdb_objects));
return &module->module;
}
static void userdb_dict_deinit(struct userdb_module *_module)
{
struct dict_userdb_module *module =
(struct dict_userdb_module *)_module;
db_dict_unref(&module->conn);
}
struct userdb_module_interface userdb_dict =
{
"dict",
userdb_dict_preinit,
NULL,
userdb_dict_deinit,
userdb_dict_lookup,
userdb_dict_iterate_init,
userdb_dict_iterate_next,
userdb_dict_iterate_deinit
};
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