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// Copyright 2021 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 "base/command_line.h"
#include "base/memory/read_only_shared_memory_region.h"
#include "components/safe_browsing/content/browser/client_side_phishing_model.h"
#include "components/safe_browsing/content/renderer/phishing_classifier/client_side_phishing_fuzzer.pb.h"
#include "components/safe_browsing/content/renderer/phishing_classifier/features.h"
#include "components/safe_browsing/content/renderer/phishing_classifier/scorer.h"
#include "testing/libfuzzer/proto/lpm_interface.h"
DEFINE_PROTO_FUZZER(
const safe_browsing::ClientSidePhishingFuzzerCase& fuzzing_case) {
base::CommandLine::Init(0, nullptr);
const std::string model_str = fuzzing_case.memory_region();
base::MappedReadOnlyRegion mapped_region = base::MappedReadOnlyRegion();
mapped_region = base::ReadOnlySharedMemoryRegion::Create(model_str.size());
mapped_region.mapping.GetMemoryAsSpan<char>().copy_prefix_from(model_str);
std::unique_ptr<safe_browsing::Scorer> scorer(safe_browsing::Scorer::Create(
mapped_region.region.Duplicate(), base::File()));
if (!scorer)
return;
const safe_browsing::flat::ClientSideModel* model =
safe_browsing::flat::GetClientSideModel(mapped_region.mapping.memory());
if (!model) {
return;
}
if (!safe_browsing::ClientSidePhishingModel::
VerifyCSDFlatBufferIndicesAndFields(model)) {
return;
}
safe_browsing::FeatureMap features;
for (const std::string& boolean_feature : fuzzing_case.boolean_features()) {
if (!features.AddBooleanFeature(boolean_feature))
return;
}
for (const safe_browsing::ClientSidePhishingFuzzerCase::RealFeature&
real_feature : fuzzing_case.real_features()) {
if (!features.AddRealFeature(real_feature.name(), real_feature.value()))
return;
}
scorer->ComputeScore(features);
}
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