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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXTENSIONS_RENDERER_BINDINGS_BINDING_ACCESS_CHECKER_H_
#define EXTENSIONS_RENDERER_BINDINGS_BINDING_ACCESS_CHECKER_H_
#include <string>
#include "base/functional/callback.h"
#include "v8/include/v8.h"
namespace extensions {
// A helper class to handle access-checking API features.
class BindingAccessChecker {
public:
// The callback for determining if a given API feature (specified by `name`)
// is available in the given context.
using APIAvailabilityCallback =
base::RepeatingCallback<bool(v8::Local<v8::Context>,
const std::string& name)>;
// The callback for determining if a given context is allowed to use promises
// with API calls.
using PromiseAvailabilityCallback =
base::RepeatingCallback<bool(v8::Local<v8::Context>)>;
BindingAccessChecker(APIAvailabilityCallback api_available,
PromiseAvailabilityCallback promises_available);
BindingAccessChecker(const BindingAccessChecker&) = delete;
BindingAccessChecker& operator=(const BindingAccessChecker&) = delete;
~BindingAccessChecker();
// Returns true if the feature specified by `full_name` is available to the
// given `context`.
bool HasAccess(v8::Local<v8::Context> context,
const std::string& full_name) const;
// Same as HasAccess(), but throws an exception in the `context` if it doesn't
// have access.
bool HasAccessOrThrowError(v8::Local<v8::Context> context,
const std::string& full_name) const;
// Returns true if the given `context` is allowed to use promise-based APIs.
bool HasPromiseAccess(v8::Local<v8::Context> context) const;
private:
APIAvailabilityCallback api_available_;
PromiseAvailabilityCallback promises_available_;
};
} // namespace extensions
#endif // EXTENSIONS_RENDERER_BINDINGS_BINDING_ACCESS_CHECKER_H_
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