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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.
#ifndef CHROME_BROWSER_EXTENSIONS_OMAHA_ATTRIBUTES_HANDLER_H_
#define CHROME_BROWSER_EXTENSIONS_OMAHA_ATTRIBUTES_HANDLER_H_
#include "base/memory/raw_ptr.h"
#include "chrome/browser/extensions/blocklist.h"
#include "extensions/browser/blocklist_state.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/buildflags/buildflags.h"
#include "extensions/common/extension_id.h"
static_assert(BUILDFLAG(ENABLE_EXTENSIONS_CORE));
namespace base {
class Value;
}
namespace extensions {
class ExtensionPrefs;
class ExtensionRegistrar;
// These values are logged to UMA. Entries should not be renumbered and
// numeric values should never be reused. Please keep in sync with
// "ExtensionUpdateCheckDataKey" in
// src/tools/metrics/histograms/metadata/extensions/enums.xml.
enum class ExtensionUpdateCheckDataKey {
// No update check data keys were found so no action was taken.
kNoKey = 0,
// The update check data keys had a "_malware" key resulting in the extension
// being disabled.
kMalware = 1,
// The update check data keys had a "_potentially_uws" key resulting in the
// extension being disabled.
kPotentiallyUWS = 2,
// The update check data keys had a "_policy_violation" key resulting in the
// extension being disabled.
kPolicyViolation = 3,
kMaxValue = kPolicyViolation
};
// Manages the Omaha attributes blocklist/greylist states in extension pref.
class OmahaAttributesHandler {
public:
OmahaAttributesHandler(ExtensionPrefs* extension_prefs,
ExtensionRegistry* registry,
ExtensionRegistrar* registrar);
OmahaAttributesHandler(const OmahaAttributesHandler&) = delete;
OmahaAttributesHandler& operator=(const OmahaAttributesHandler&) = delete;
~OmahaAttributesHandler() = default;
// Performs action based on Omaha attributes for the extension.
void PerformActionBasedOnOmahaAttributes(const ExtensionId& extension_id,
const base::Value::Dict& attributes);
private:
// Performs action based on `attributes` for the `extension_id`. If the
// extension does not have the _malware attribute, remove it from the Omaha
// malware blocklist state and maybe reload it. Otherwise, add it to the Omaha
// malware blocklist state and maybe unload it.
void HandleMalwareOmahaAttribute(const ExtensionId& extension_id,
const base::Value::Dict& attributes);
// Performs action based on `attributes` for the `extension_id`. If the
// extension is not in the `greylist_state`, remove it from the Omaha
// blocklist state and maybe re-enable it. Otherwise, add it to the Omaha
// blocklist state and maybe disable it. `reason` is used for logging UMA
// metrics.
void HandleGreylistOmahaAttribute(const ExtensionId& extension_id,
const base::Value::Dict& attributes,
BitMapBlocklistState greylist_state,
ExtensionUpdateCheckDataKey reason);
raw_ptr<ExtensionPrefs> extension_prefs_ = nullptr;
raw_ptr<ExtensionRegistry> registry_ = nullptr;
raw_ptr<ExtensionRegistrar> registrar_ = nullptr;
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_OMAHA_ATTRIBUTES_HANDLER_H_
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