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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.
#ifndef CHROME_BROWSER_SAFE_BROWSING_EXTENSION_TELEMETRY_TABS_API_SIGNAL_PROCESSOR_H_
#define CHROME_BROWSER_SAFE_BROWSING_EXTENSION_TELEMETRY_TABS_API_SIGNAL_PROCESSOR_H_
#include <memory>
#include <string>
#include "base/containers/flat_map.h"
#include "chrome/browser/safe_browsing/extension_telemetry/extension_js_callstacks.h"
#include "chrome/browser/safe_browsing/extension_telemetry/extension_signal_processor.h"
#include "components/safe_browsing/core/common/proto/csd.pb.h"
namespace safe_browsing {
class ExtensionSignal;
class ExtensionTelemetryReportRequest_SignalInfo;
using TabsApiCallDetails =
ExtensionTelemetryReportRequest::SignalInfo::TabsApiInfo::CallDetails;
// A class that processes chrome.tabs API signal data to generate telemetry
// reports.
class TabsApiSignalProcessor : public ExtensionSignalProcessor {
public:
TabsApiSignalProcessor();
~TabsApiSignalProcessor() override;
TabsApiSignalProcessor(TabsApiSignalProcessor&) = delete;
TabsApiSignalProcessor& operator=(const TabsApiSignalProcessor&) = delete;
// ExtensionSignalProcessor:
void ProcessSignal(const ExtensionSignal& signal) override;
std::unique_ptr<ExtensionTelemetryReportRequest_SignalInfo>
GetSignalInfoForReport(const extensions::ExtensionId& extension_id) override;
bool HasDataToReportForTest() const override;
void SetMaxUniqueCallDetailsForTest(size_t max_unique_call_details);
protected:
// Max number of unique API call details stored per extension.
// The signal processor only stores up to this number of unique API call
// details.
size_t max_unique_call_details_;
// Call data consists of call arguments and JS call stacks associated
// with the API invocations.
struct CallData {
CallData();
~CallData();
CallData(const CallData&);
// Arguments passed to the API call.
TabsApiCallDetails call_details;
// Multiple JS callstacks (one for each API invocation).
ExtensionJSCallStacks js_callstacks;
};
// Stores a map of unique API call data. The key used is a string
// concatenation of the call arguments stored.
using CallDataMap = base::flat_map<std::string, CallData>;
// Stores chrome.tabs API signal info for a single extension. If
// `max_unique_call_details_` is exceeded, no more call details will be
// recorded.
struct TabsApiInfoStoreEntry {
TabsApiInfoStoreEntry();
~TabsApiInfoStoreEntry();
TabsApiInfoStoreEntry(const TabsApiInfoStoreEntry&);
CallDataMap call_data_map;
};
// Stores chrome.tabs API signal for multiple extensions, keyed by extension
// id.
using TabsApiInfoStore =
base::flat_map<extensions::ExtensionId, TabsApiInfoStoreEntry>;
TabsApiInfoStore tabs_api_info_store_;
};
} // namespace safe_browsing
#endif // CHROME_BROWSER_SAFE_BROWSING_EXTENSION_TELEMETRY_TABS_API_SIGNAL_PROCESSOR_H_
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