73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
/* Copyright 2021 Google LLC
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include "fuzz_header.h"
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/*
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* Targets answer_auth
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*/
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void FuzzAuth(const uint8_t **data2, size_t *size2) {
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const uint8_t *data = *data2;
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size_t size = *size2;
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int i1 = get_int(&data, &size);
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int i2 = get_int(&data, &size);
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int i3 = get_int(&data, &size);
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if (size > (sizeof(struct dns_header) +50)) {
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char *new_data = malloc(size+1);
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memset(new_data, 0, size);
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memcpy(new_data, data, size);
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new_data[size] = '\0';
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pointer_arr[pointer_idx++] = (void*)new_data;
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time_t now;
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union mysockaddr peer_addr;
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answer_auth((struct dns_header *)new_data, new_data + size, size, now, &peer_addr, i1, i2, i3);
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}
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}
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/*
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* Fuzzer entrypoint.
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*/
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int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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daemon = NULL;
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if (size < 1) {
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return 0;
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}
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// Initialize mini garbage collector
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gb_init();
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// Get a value we can use to decide which target to hit.
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int i = (int)data[0];
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data += 1;
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size -= 1;
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int succ = init_daemon(&data, &size);
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if (succ == 0) {
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cache_init();
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blockdata_init();
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FuzzAuth(&data, &size);
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cache_start_insert();
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fuzz_blockdata_cleanup();
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}
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// Free data in mini garbage collector.
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gb_cleanup();
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return 0;
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}
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