caps/ContentPrincipalJSONHandler.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_ContentPrincipalJSONHandler_h
   7 #define mozilla_ContentPrincipalJSONHandler_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/RefPtr.h"           // RefPtr
  16
  17 #include "nsCOMPtr.h"  // nsCOMPtr
  18 #include "nsDebug.h"   // NS_WARNING
  19 #include "nsIURI.h"    // nsIURI
  20
  21 #include "ContentPrincipal.h"
  22 #include "OriginAttributes.h"
  23 #include "SharedJSONHandler.h"
  24
  25 namespace mozilla {
  26
  27 // JSON parse handler for an inner object for ContentPrincipal.
  28 // Used by PrincipalJSONHandler or SubsumedPrincipalJSONHandler.
  29 class ContentPrincipalJSONHandler : public PrincipalJSONHandlerShared {
  30   enum class State {
  31     Init,
  32
  33     // After the inner object's '{'.
  34     StartObject,
  35
  36     // After the property key for eURI.
  37     URIKey,
  38
  39     // After the property key for eDomain.
  40     DomainKey,
  41
  42     // After the property key for eSuffix.
  43     SuffixKey,
  44
  45     // After the property value for eURI, eDomain, or eSuffix.
  46     AfterPropertyValue,
  47
  48     // After the inner object's '}'.
  49     EndObject,
  50
  51     Error,
  52   };
  53
  54  public:
  55   ContentPrincipalJSONHandler() = default;
  56   virtual ~ContentPrincipalJSONHandler() = default;
  57
  58   virtual bool startObject() override;
  59
  60   using PrincipalJSONHandlerShared::propertyName;
  61   virtual bool propertyName(const JS::Latin1Char* name, size_t length) override;
  62
  63   virtual bool endObject() override;
  64
  65   virtual bool startArray() override {
  66     NS_WARNING("Unexpected array value");
  67     mState = State::Error;
  68     return false;
  69   }
  70   virtual bool endArray() override {
  71     NS_WARNING("Unexpected array value");
  72     mState = State::Error;
  73     return false;
  74   }
  75
  76   using PrincipalJSONHandlerShared::stringValue;
  77   virtual bool stringValue(const JS::Latin1Char* str, size_t length) override;
  78
  79   bool HasAccepted() const { return mState == State::EndObject; }
  80
  81  protected:
  82   virtual void SetErrorState() override { mState = State::Error; }
  83
  84  private:
  85   State mState = State::Init;
  86
  87   nsCOMPtr<nsIURI> mPrincipalURI;
  88   nsCOMPtr<nsIURI> mDomain;
  89   OriginAttributes mAttrs;
  90 };
  91
  92 }  // namespace mozilla
  93
  94 #endif  // mozilla_ContentPrincipalJSONHandler_h