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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <stdint.h>
#include <string>
#include <vector>
#include "base/files/scoped_temp_dir.h"
#include "base/logging.h"
#include "base/time/time.h"
#include "chrome/browser/ash/extensions/file_manager/search_by_pattern.h"
#include "chrome/browser/ash/fileapi/recent_source.h"
/**
* Helper function that creates a file without content (we only care about
* names). Returns true if successful, false otherwise.
*/
bool CreateTestFile(const base::FilePath& file_path) {
auto path = base::FilePath(file_path);
base::File file(path,
base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_WRITE);
return file.created();
}
/**
* Checks the resiliance of SearchByPattern to fuzzed queries.
*/
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
base::ScopedTempDir temp_dir;
if (!temp_dir.CreateUniqueTempDir()) {
// Not a fuzzer error, so we return 0.
return 0;
}
// Create files in the temp_dir, as otherwise SearchByPattern will never use
// the query (it only uses it when matching against files it found).
base::FilePath test_dir = temp_dir.GetPath();
std::vector<std::string> file_names = {"foo.txt", "bar.exe"};
for (const auto& name : file_names) {
base::FilePath file_path = test_dir.Append(name);
if (!CreateTestFile(file_path)) {
LOG(ERROR) << "Failed to create file \"" << file_path.MaybeAsASCII()
<< "\"";
// Not a fuzzer error, so we return 0.
return 0;
}
}
base::Time min_modified_time = base::Time::UnixEpoch();
std::string query = std::string(reinterpret_cast<const char*>(data), size);
// Searching by fuzzed query. Using most broad parameters, excluding no paths,
// accepting files of any time with modified date after 1 Jan 1970.
std::vector<base::FilePath> excluded_path;
extensions::SearchByPattern(test_dir, excluded_path, query, min_modified_time,
ash::RecentSource::FileType::kAll,
file_names.size());
return 0;
}
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