oss-fuzz/projects/augeas/augeas_fa_fuzzer.cc

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/*
# Copyright 2020 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
################################################################################
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
// Augea includes
#include "augeas.h"
#include "config.h"
#include "fa.h"
#include "internal.h"
/*
* FA fuzzer.
*/
extern "C"
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size){
if(Size<3){
return 0;
}
char *new_str = (char *)malloc(Size+1);
if (new_str == NULL){
return 0;
}
memcpy(new_str, Data, Size);
new_str[Size] = '\0';
int intSize = (int)Size;
char *s;
size_t len;
int r = fa_expand_nocase(new_str, intSize, &s, &len);
struct fa *fa2 = NULL;
int r2 = fa_compile(new_str, intSize, &fa2);
struct fa *fa1 = NULL;
fa_compile(&new_str[1], intSize, &fa1);
struct fa *fa_min;
fa_min = fa_minus(fa1, fa2);
if (fa2 != NULL)
{
char* word = NULL;
size_t word_len = 0;
fa_example(fa2, &word, &word_len);
if(word != NULL)
free(word);
fa_json(stdout, fa2);
fa_minimize(fa2);
fa_dot(stdout, fa2);
}
struct fa *fa_b = fa_make_basic(intSize);
// cleanup
if (s != NULL) free(s);
if (new_str != NULL) free(new_str);
if (fa_b != NULL) fa_free(fa_b);
if (fa_min != NULL) fa_free(fa_min);
if (fa1 != NULL) fa_free(fa1);
if (fa2 != NULL) fa_free(fa2);
return 0;
}