A C library for asynchronous DNS requests (grpc依赖)
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/*
* Copyright (C) The c-ares project
*
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting
* documentation, and that the name of M.I.T. not be used in
* advertising or publicity pertaining to distribution of the
* software without specific, written prior permission.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* SPDX-License-Identifier: MIT
*/
#include <stddef.h>
#include "ares.h"
int LLVMFuzzerTestOneInput(const unsigned char *data, unsigned long size);
// Entrypoint for Clang's libfuzzer
int LLVMFuzzerTestOneInput(const unsigned char *data, unsigned long size)
{
// Feed the data into each of the ares_parse_*_reply functions.
struct hostent *host = NULL;
struct ares_addrttl info[5];
struct ares_addr6ttl info6[5];
unsigned char addrv4[4] = {0x10, 0x20, 0x30, 0x40};
struct ares_srv_reply* srv = NULL;
struct ares_mx_reply* mx = NULL;
struct ares_txt_reply* txt = NULL;
struct ares_soa_reply* soa = NULL;
struct ares_naptr_reply* naptr = NULL;
struct ares_caa_reply* caa = NULL;
struct ares_uri_reply* uri = NULL;
int count = 5;
ares_parse_a_reply(data, (int)size, &host, info, &count);
if (host) ares_free_hostent(host);
host = NULL;
count = 5;
ares_parse_aaaa_reply(data, (int)size, &host, info6, &count);
if (host) ares_free_hostent(host);
host = NULL;
ares_parse_ptr_reply(data, (int)size, addrv4, sizeof(addrv4), AF_INET, &host);
if (host) ares_free_hostent(host);
host = NULL;
ares_parse_ns_reply(data, (int)size, &host);
if (host) ares_free_hostent(host);
ares_parse_srv_reply(data, (int)size, &srv);
if (srv) ares_free_data(srv);
ares_parse_mx_reply(data, (int)size, &mx);
if (mx) ares_free_data(mx);
ares_parse_txt_reply(data, (int)size, &txt);
if (txt) ares_free_data(txt);
ares_parse_soa_reply(data, (int)size, &soa);
if (soa) ares_free_data(soa);
ares_parse_naptr_reply(data, (int)size, &naptr);
if (naptr) ares_free_data(naptr);
ares_parse_caa_reply(data, (int)size, &caa);
if (caa) ares_free_data(caa);
ares_parse_uri_reply(data, (int)size, &uri);
if (uri) ares_free_data(uri);
return 0;
}