caps/NullPrincipalJSONHandler.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef mozilla_NullPrincipalJSONHandler_h
   7 #define mozilla_NullPrincipalJSONHandler_h
   8
   9 #include <stddef.h>  // size_t
  10 #include <stdint.h>  // uint32_t
  11
  12 #include "js/TypeDecls.h"  // JS::Latin1Char
  13
  14 #include "mozilla/AlreadyAddRefed.h"  // already_AddRefed
  15 #include "mozilla/Assertions.h"       // MOZ_ASSERT_UNREACHABLE
  16 #include "mozilla/RefPtr.h"           // RefPtr
  17
  18 #include "nsCOMPtr.h"  // nsCOMPtr
  19 #include "nsDebug.h"   // NS_WARNING
  20 #include "nsIURI.h"    // nsIURI
  21
  22 #include "NullPrincipal.h"
  23 #include "OriginAttributes.h"
  24 #include "SharedJSONHandler.h"
  25
  26 namespace mozilla {
  27
  28 // JSON parse handler for an inner object for NullPrincipal.
  29 // Used by PrincipalJSONHandler or SubsumedPrincipalJSONHandler.
  30 class NullPrincipalJSONHandler : public PrincipalJSONHandlerShared {
  31   enum class State {
  32     Init,
  33
  34     // After the inner object's '{'.
  35     StartObject,
  36
  37     // After the property key for eSpec.
  38     SpecKey,
  39
  40     // After the property key for eSuffix.
  41     SuffixKey,
  42
  43     // After the property value for eSpec or eSuffix.
  44     AfterPropertyValue,
  45
  46     // After the inner object's '}'.
  47     EndObject,
  48
  49     Error,
  50   };
  51
  52  public:
  53   NullPrincipalJSONHandler() = default;
  54   virtual ~NullPrincipalJSONHandler() = default;
  55
  56   virtual bool startObject() override;
  57
  58   using PrincipalJSONHandlerShared::propertyName;
  59   virtual bool propertyName(const JS::Latin1Char* name, size_t length) override;
  60
  61   virtual bool endObject() override;
  62
  63   virtual bool startArray() override {
  64     NS_WARNING("Unexpected array value");
  65     mState = State::Error;
  66     return false;
  67   }
  68   virtual bool endArray() override {
  69     NS_WARNING("Unexpected array value");
  70     mState = State::Error;
  71     return false;
  72   }
  73
  74   using PrincipalJSONHandlerShared::stringValue;
  75   virtual bool stringValue(const JS::Latin1Char* str, size_t length) override;
  76
  77   bool HasAccepted() const { return mState == State::EndObject; }
  78
  79  protected:
  80   virtual void SetErrorState() override { mState = State::Error; }
  81
  82  private:
  83   State mState = State::Init;
  84
  85   nsCOMPtr<nsIURI> mUri;
  86   OriginAttributes mAttrs;
  87 };
  88
  89 }  // namespace mozilla
  90
  91 #endif  // mozilla_NullPrincipalJSONHandler_h