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/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <stdbool.h>
struct worker_ctx;
/** Zone import context (opaque). */
struct zone_import_ctx;
/**
* Completion callback
*
* @param state -1 - fail
* 0 - success
* 1 - success, but there are non-critical errors
* @param pointer to user data
*/
typedef void (*zi_callback)(int state, void *param);
/**
* Allocate and initialize zone import context.
*
* @param worker pointer to worker state
* @return NULL or pointer to zone import context.
*/
struct zone_import_ctx *zi_allocate(struct worker_ctx *worker,
zi_callback cb, void *param);
/** Free zone import context. */
void zi_free(struct zone_import_ctx *z_import);
/**
* Import zone from file.
*
* @note only root zone import is supported; origin must be NULL or "."
* @param z_import pointer to zone import context
* @param zone_file zone file name
* @param origin default origin
* @param rclass default class
* @param ttl default ttl
* @return 0 or an error code
*/
int zi_zone_import(struct zone_import_ctx *z_import,
const char *zone_file, const char *origin,
uint16_t rclass, uint32_t ttl);
/**
* Check if import already in process.
*
* @param z_import pointer to zone import context.
* @return true if import already in process; false otherwise.
*/
bool zi_import_started(struct zone_import_ctx *z_import);
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