mirror of https://github.com/google/oss-fuzz.git
86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
|
#include <stddef.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <stdint.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <stdbool.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
#include "mpg123.h"
|
||
|
|
|
||
|
|
static char* fuzzer_get_tmpfile(const uint8_t* data, size_t size) {
|
||
|
|
char* filename_buffer = strdup("/tmp/generate_temporary_file.XXXXXX");
|
||
|
|
if (!filename_buffer) {
|
||
|
|
perror("Failed to allocate file name buffer.");
|
||
|
|
abort();
|
||
|
|
}
|
||
|
|
const int file_descriptor = mkstemp(filename_buffer);
|
||
|
|
if (file_descriptor < 0) {
|
||
|
|
perror("Failed to make temporary file.");
|
||
|
|
abort();
|
||
|
|
}
|
||
|
|
FILE* file = fdopen(file_descriptor, "wb");
|
||
|
|
if (!file) {
|
||
|
|
perror("Failed to open file descriptor.");
|
||
|
|
close(file_descriptor);
|
||
|
|
abort();
|
||
|
|
}
|
||
|
|
const size_t bytes_written = fwrite(data, sizeof(uint8_t), size, file);
|
||
|
|
if (bytes_written < size) {
|
||
|
|
close(file_descriptor);
|
||
|
|
fprintf(stderr, "Failed to write all bytes to file (%zu out of %zu)",
|
||
|
|
bytes_written, size);
|
||
|
|
abort();
|
||
|
|
}
|
||
|
|
fclose(file);
|
||
|
|
return filename_buffer;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void fuzzer_release_tmpfile(char* filename) {
|
||
|
|
if (unlink(filename) != 0) {
|
||
|
|
perror("WARNING: Failed to delete temporary file.");
|
||
|
|
}
|
||
|
|
free(filename);
|
||
|
|
}
|
||
|
|
|
||
|
|
int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
|
||
|
|
static bool initialized = false;
|
||
|
|
if (!initialized) {
|
||
|
|
mpg123_init();
|
||
|
|
initialized = true;
|
||
|
|
}
|
||
|
|
char* filename = fuzzer_get_tmpfile(data, size);
|
||
|
|
if (filename == NULL) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
size_t outmemorysize = size * 2; // Guess based on the size of data.
|
||
|
|
unsigned char* outmemory = (unsigned char*)malloc(outmemorysize);
|
||
|
|
if (outmemory == NULL) {
|
||
|
|
fuzzer_release_tmpfile(filename);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int error;
|
||
|
|
mpg123_handle* handle = mpg123_new(NULL, &error);
|
||
|
|
if (handle == NULL) {
|
||
|
|
free(outmemory);
|
||
|
|
fuzzer_release_tmpfile(filename);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (mpg123_open(handle, filename) == MPG123_OK) {
|
||
|
|
int read_error;
|
||
|
|
do {
|
||
|
|
size_t decoded_size;
|
||
|
|
read_error = mpg123_read(handle, outmemory, outmemorysize, &decoded_size);
|
||
|
|
} while (read_error == MPG123_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
mpg123_close(handle);
|
||
|
|
mpg123_delete(handle);
|
||
|
|
free(outmemory);
|
||
|
|
fuzzer_release_tmpfile(filename);
|
||
|
|
return 0;
|
||
|
|
}
|