/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0.  If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

#include <stdlib.h>
#include <string.h>

#include <isc/buffer.h>
#include <isc/mem.h>
#include <isc/print.h>
#include <isc/util.h>

#include <dns/callbacks.h>
#include <dns/master.h>
#include <dns/name.h>
#include <dns/rdataset.h>
#include <dns/result.h>

isc_mem_t *mctx;

static isc_result_t
print_dataset(void *arg, const dns_name_t *owner, dns_rdataset_t *dataset) {
	char buf[64 * 1024];
	isc_buffer_t target;
	isc_result_t result;

	UNUSED(arg);

	isc_buffer_init(&target, buf, 64 * 1024);
	result = dns_rdataset_totext(dataset, owner, false, false, &target);
	if (result == ISC_R_SUCCESS) {
		fprintf(stdout, "%.*s\n", (int)target.used,
			(char *)target.base);
	} else {
		fprintf(stdout, "dns_rdataset_totext: %s\n",
			dns_result_totext(result));
	}

	return (ISC_R_SUCCESS);
}

int
main(int argc, char *argv[]) {
	isc_result_t result;
	dns_name_t origin;
	isc_buffer_t source;
	isc_buffer_t target;
	unsigned char name_buf[255];
	dns_rdatacallbacks_t callbacks;

	UNUSED(argc);

	isc_mem_create(&mctx);

	if (argv[1]) {
		isc_buffer_init(&source, argv[1], strlen(argv[1]));
		isc_buffer_add(&source, strlen(argv[1]));
		isc_buffer_setactive(&source, strlen(argv[1]));
		isc_buffer_init(&target, name_buf, 255);
		dns_name_init(&origin, NULL);
		result = dns_name_fromtext(&origin, &source, dns_rootname, 0,
					   &target);
		if (result != ISC_R_SUCCESS) {
			fprintf(stdout, "dns_name_fromtext: %s\n",
				dns_result_totext(result));
			exit(1);
		}

		dns_rdatacallbacks_init_stdio(&callbacks);
		callbacks.add = print_dataset;

		result = dns_master_loadfile(
			argv[1], &origin, &origin, dns_rdataclass_in, 0, 0,
			&callbacks, NULL, NULL, mctx, dns_masterformat_text, 0);
		fprintf(stdout, "dns_master_loadfile: %s\n",
			dns_result_totext(result));
	}
	return (0);
}
