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bind/fuzz/dns_master_load.c
Petr Špaček 5076355822
Add dns_master_loadbuffer() fuzzer
Corpus focuses on "extra" things in master files like $GENERATE etc.
Text encoding for RRs is thoroughly tested in dns_rdata_fromtext
fuzzer.
2022-02-24 10:02:56 +01:00

79 lines
1.7 KiB
C

/*
* 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 <stdbool.h>
#include <stdlib.h>
#include <isc/buffer.h>
#include <isc/mem.h>
#include <isc/util.h>
#include <dns/callbacks.h>
#include <dns/db.h>
#include <dns/master.h>
#include <dns/types.h>
#include "fuzz.h"
bool debug = false;
int
LLVMFuzzerInitialize(int *argc, char ***argv) {
UNUSED(argc);
UNUSED(argv);
return (0);
}
int
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
isc_buffer_t buf;
isc_result_t result;
isc_mem_t *mctx = NULL;
isc_buffer_constinit(&buf, data, size);
isc_buffer_add(&buf, size);
isc_buffer_setactive(&buf, size);
dns_rdatacallbacks_t callbacks;
dns_rdatacallbacks_init(&callbacks);
dns_db_t *db = NULL;
isc_mem_create(&mctx);
result = dns_db_create(mctx, "rbt", dns_rootname, dns_dbtype_zone,
dns_rdataclass_in, 0, NULL, &db);
if (result != ISC_R_SUCCESS) {
return 0;
}
result = dns_db_beginload(db, &callbacks);
if (result != ISC_R_SUCCESS) {
goto end;
}
result = dns_master_loadbuffer(&buf, &db->origin, &db->origin,
db->rdclass, DNS_MASTER_ZONE, &callbacks,
db->mctx);
if (debug) {
fprintf(stderr, "loadbuffer: %s\n", isc_result_totext(result));
}
result = dns_db_endload(db, &callbacks);
if (debug) {
fprintf(stderr, "endload: %s\n", isc_result_totext(result));
}
end:
dns_db_detach(&db);
isc_mem_destroy(&mctx);
return (0);
}