55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
// Copyright 2016 Google Inc.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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#include <libgen.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string>
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#include <magic.h>
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struct Environment {
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Environment(std::string data_dir) {
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magic = magic_open(MAGIC_NONE);
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std::string magic_path = data_dir + "/magic";
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if (magic_load(magic, magic_path.c_str())) {
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fprintf(stderr, "error loading magic file: %s\n", magic_error(magic));
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exit(1);
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}
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}
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magic_t magic;
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};
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static Environment* env;
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extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv) {
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char* exe_path = (*argv)[0];
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// dirname() can modify its argument.
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char* exe_path_copy = strdup(exe_path);
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char* dir = dirname(exe_path_copy);
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env = new Environment(dir);
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free(exe_path_copy);
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return 0;
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}
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
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if (size < 1)
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return 0;
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magic_buffer(env->magic, data, size);
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return 0;
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}
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