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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.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include <stddef.h>
#include <stdint.h>
#include <string>
#include "base/at_exit.h"
#include "base/i18n/icu_util.h"
#include "components/favicon_base/favicon_url_parser.h"
struct IcuEnvironment {
IcuEnvironment() { CHECK(base::i18n::InitializeICU()); }
// used by ICU integration.
base::AtExitManager at_exit_manager;
};
IcuEnvironment* env = new IcuEnvironment();
chrome::FaviconUrlFormat GetFaviconUrlFormatFromUint8(uint8_t value) {
// Dummy switch to detect changes to the enum definition.
switch (chrome::FaviconUrlFormat()) {
case chrome::FaviconUrlFormat::kFaviconLegacy:
case chrome::FaviconUrlFormat::kFavicon2:
break;
}
return (value % 2) == 0 ? chrome::FaviconUrlFormat::kFaviconLegacy
: chrome::FaviconUrlFormat::kFavicon2;
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
if (size < 2)
return 0;
// The first byte is used to determine the FaviconUrlFormat, and the rest of
// the data is used in the input string to parse.
const chrome::FaviconUrlFormat url_format =
GetFaviconUrlFormatFromUint8(data[0]);
const std::string string_input(reinterpret_cast<const char*>(data + 1),
size - 1);
chrome::ParsedFaviconPath parsed;
chrome::ParseFaviconPath(string_input, url_format, &parsed);
return 0;
}
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