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59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_OriginTrials_h
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#define mozilla_OriginTrials_h
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#include "mozilla/origin_trials_ffi_generated.h"
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#include "mozilla/EnumSet.h"
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#include "nsStringFwd.h"
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class nsIPrincipal;
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class nsGlobalWindowInner;
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struct JSContext;
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class JSObject;
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namespace mozilla {
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using OriginTrial = origin_trials_ffi::OriginTrial;
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// A class that keeps a set of enabled trials / features for a particular
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// origin.
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//
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// These allow sites to opt-in and provide feedback into experimental features
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// before we ship it to the general public.
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class OriginTrials final {
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public:
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using RawType = EnumSet<OriginTrial>;
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OriginTrials() = default;
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static OriginTrials FromRaw(RawType aRaw) { return OriginTrials(aRaw); }
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const RawType& Raw() const { return mEnabledTrials; }
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// Parses and verifies a base64-encoded token from either a header or a meta
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// tag. If the token is valid and not expired, this will enable the relevant
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// feature.
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void UpdateFromToken(const nsAString& aBase64EncodedToken,
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nsIPrincipal* aPrincipal);
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bool IsEnabled(OriginTrial aTrial) const;
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// Checks whether a given origin trial is enabled for a given call.
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static bool IsEnabled(JSContext*, JSObject*, OriginTrial);
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// Computes the currently-applying trials for our global.
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static OriginTrials FromWindow(const nsGlobalWindowInner*);
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private:
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explicit OriginTrials(RawType aRaw) : mEnabledTrials(aRaw) {}
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RawType mEnabledTrials;
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};
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} // namespace mozilla
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#endif
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