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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <cstdint>
#include <string_view>
#include "base/logging.h"
#include "content/browser/indexed_db/indexed_db_leveldb_coding.h"
#include "third_party/blink/public/common/indexeddb/indexeddb_key.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
// Old encoding scheme.
{
std::string_view input(reinterpret_cast<const char*>(data), size);
std::string_view parsed_input(input);
blink::IndexedDBKey key = content::indexed_db::DecodeIDBKey(&parsed_input);
// If any prefix of the input decoded into a valid key, re-encode it, then
// ensure that the encoding matches the original prefix that got decoded.
if (key.IsValid()) {
std::string result;
content::indexed_db::EncodeIDBKey(key, &result);
// DecodeIDBKey() leaves the unparsed suffix in parsed_input, so strip
// that much off the end of input before comparing.
input.remove_suffix(parsed_input.size());
// Avoid `CHECK_EQ()` since values can be multi-line and that confuses
// stack trace parsers in fuzzing infra. Print the values on a different
// line instead.
CHECK(result == input) << "\nResult: " << result << "\nInput: " << input;
}
}
// New (sortable) encoding scheme.
{
std::string_view input(reinterpret_cast<const char*>(data), size);
blink::IndexedDBKey key = content::indexed_db::DecodeSortableIDBKey(input);
// Unlike the older encoding, the input has to be exactly decodeable (rather
// than just a prefix being decodeable).
if (key.IsValid()) {
std::string result = content::indexed_db::EncodeSortableIDBKey(key);
// Avoid `CHECK_EQ()` since values can be multi-line and that confuses
// stack trace parsers in fuzzing infra. Print the values on a different
// line instead.
CHECK(result == input) << "\nResult: " << result << "\nInput: " << input
<< "\nKey: " << key.DebugString();
}
}
return 0;
}
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