SubsumedPrincipalJSONHandler.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_SubsumedPrincipalJSONHandler_h

#define mozilla_SubsumedPrincipalJSONHandler_h

#include <stddef.h>  // size_t

#include <stdint.h>  // uint32_t

#include "js/TypeDecls.h"  // JS::Latin1Char

#include "mozilla/AlreadyAddRefed.h"  // already_AddRefed

#include "mozilla/Variant.h"          // Variant

#include "mozilla/RefPtr.h"           // RefPtr

#include "nsDebug.h"  // NS_WARNING

#include "BasePrincipal.h"

#include "ContentPrincipalJSONHandler.h"

#include "NullPrincipalJSONHandler.h"

#include "SharedJSONHandler.h"

namespace mozilla {

class SubsumedPrincipalJSONHandlerTypes {

 public:

  enum class State {

    Init,

    // After the subsumed principal object's '{'.

    StartObject,

    // After the PrincipalKind property key for SystemPrincipal.

    SystemPrincipal_Key,

    // After the SystemPrincipal's inner object's '{'.

    SystemPrincipal_StartObject,

    // After the SystemPrincipal's inner object's '}'.

    SystemPrincipal_EndObject,

    // After the PrincipalKind property key for NullPrincipal or

    // ContentPrincipal, and also the entire inner object.

    // Delegates to mInnerHandler until the inner object's '}'.

//

    // Unlike PrincipalJSONHandler, subsumed principal doesn't contain

    // ExpandedPrincipal.

    NullPrincipal_Inner,

    ContentPrincipal_Inner,

    // After the subsumed principal object's '}'.

    EndObject,

    Error,

};

  using InnerHandlerT =

      Maybe<Variant<NullPrincipalJSONHandler, ContentPrincipalJSONHandler>>;

  static constexpr bool CanContainExpandedPrincipal = false;

};

// JSON parse handler for subsumed principal object inside ExpandedPrincipal's

// new format.

//

//                       Subsumed principal object

//                               |

//              ----------------------------------

//              |                                |

// {"2": {"0": [{"1": {"0": https://mozilla.com"}}]}}

//                |   |                         |

//                |   ---------------------------

//                |                |

//                |         inner object

//          PrincipalKind

//

// For inner object except for the system principal case, this delegates

// to NullPrincipalJSONHandler or ContentPrincipalJSONHandler.

class SubsumedPrincipalJSONHandler

    : public ContainerPrincipalJSONHandler<SubsumedPrincipalJSONHandlerTypes> {

  using State = SubsumedPrincipalJSONHandlerTypes::State;

  using InnerHandlerT = SubsumedPrincipalJSONHandlerTypes::InnerHandlerT;

 public:

  SubsumedPrincipalJSONHandler() = default;

  virtual ~SubsumedPrincipalJSONHandler() = default;

  bool HasAccepted() const { return mState == State::EndObject; }

 protected:

  virtual void SetErrorState() override { mState = State::Error; }

};

}  // namespace mozilla

#endif  // mozilla_SubsumedPrincipalJSONHandler_h