caps/nsJSPrincipals.h
author Bob Owen <bobowencode@gmail.com>
Mon, 21 Dec 2015 20:33:12 +0000
changeset 314195 79733166f05ef2e5c2fecf2a041410345497aac4
parent 301191 f8547896d5823f66f61430cdaf5d7104cb241604
child 356874 ee83d585ff9db5e419c9ed5bf21884c8689df19a
permissions -rw-r--r--
Bug 1156742 Part 1: Change Moz2D recording, so that it can be used in isolation. r=bas These are mainly changes to make sure we have recorded relevant dependencies to each draw operation. Where we can't record them on the fly like this, it makes sure the object has originated from our DrawTarget.

/* -*- 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/. */
/* describes principals by their orginating uris*/

#ifndef nsJSPrincipals_h__
#define nsJSPrincipals_h__
#include "jsapi.h"
#include "nsIPrincipal.h"

class nsJSPrincipals : public nsIPrincipal, public JSPrincipals
{
public:
  /* SpiderMonkey security callbacks. */
  static bool Subsume(JSPrincipals *jsprin, JSPrincipals *other);
  static void Destroy(JSPrincipals *jsprin);

  /* JSReadPrincipalsOp for nsJSPrincipals */
  static bool ReadPrincipals(JSContext* aCx, JSStructuredCloneReader* aReader,
                             JSPrincipals** aOutPrincipals);

  static bool ReadKnownPrincipalType(JSContext* aCx,
                                     JSStructuredCloneReader* aReader,
                                     uint32_t aTag,
                                     JSPrincipals** aOutPrincipals);

  bool write(JSContext* aCx, JSStructuredCloneWriter* aWriter) final;

  /*
   * Get a weak reference to nsIPrincipal associated with the given JS
   * principal, and vice-versa.
   */
  static nsJSPrincipals* get(JSPrincipals *principals) {
    nsJSPrincipals *self = static_cast<nsJSPrincipals *>(principals);
    MOZ_ASSERT_IF(self, self->debugToken == DEBUG_TOKEN);
    return self;
  }
  static nsJSPrincipals* get(nsIPrincipal *principal) {
    nsJSPrincipals *self = static_cast<nsJSPrincipals *>(principal);
    MOZ_ASSERT_IF(self, self->debugToken == DEBUG_TOKEN);
    return self;
  }

  NS_IMETHOD_(MozExternalRefCountType) AddRef(void) override;
  NS_IMETHOD_(MozExternalRefCountType) Release(void) override;

  nsJSPrincipals() {
    refcount = 0;
    setDebugToken(DEBUG_TOKEN);
  }

  /**
   * Return a string that can be used as JS script filename in error reports.
   */
  virtual void GetScriptLocation(nsACString &aStr) = 0;
  static const uint32_t DEBUG_TOKEN = 0x0bf41760;

protected:
  virtual ~nsJSPrincipals() {
    setDebugToken(0);
  }

};

#endif /* nsJSPrincipals_h__ */