caps/ContentPrincipal.h
author Nicholas Nethercote <nnethercote@mozilla.com>
Wed, 12 Jul 2017 15:13:37 +1000
changeset 419917 129793760f2d718ed61ba17d9aacd57c7ec6785b
parent 400887 7012be88341ddd606d8a1f829b2bbd00209903c9
child 427557 7c880eca810ac03509cc3102bd421b5f386e82cb
permissions -rw-r--r--
Bug 1380227 - Avoid many UTF16toUTF8 and UTF8toUTF16 conversions in nsStringBundle. r=emk. Most of the names passed to nsIStringBundle::{Get,Format}StringFromUTF8Name have one of the two following forms: - a 16-bit C string literal, which is then converted to an 8-bit string in order for the lookup to occur; - an 8-bit C string literal converted to a 16-bit string, which is then converted back to an 8-bit string in order for the lookup to occur. This patch introduces and uses alternative methods that can take an 8-bit C string literal, which requires changing some signatures in other methods and functions. It replaces all C++ uses of the old methods. The patch also changes the existing {Get,Format}StringFromName() methods so they take an AUTF8String argument for the name instead of a wstring, because that's nicer for JS code. Even though there is a method for C++ code and a different one for JS code, |binaryname| is used so that the existing method names can be used for the common case in both languages. The change reduces the number of NS_ConvertUTF8toUTF16 and NS_ConvertUTF16toUTF8 conversions while running Speedometer v2 from ~270,000 to ~160,000. (Most of these conversions involved the string "deprecatedReferrerDirective" in nsCSPParser.cpp.)

/* -*- 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 ContentPrincipal_h
#define ContentPrincipal_h

#include "nsCOMPtr.h"
#include "nsJSPrincipals.h"
#include "nsTArray.h"
#include "nsIContentSecurityPolicy.h"
#include "nsIProtocolHandler.h"
#include "nsNetUtil.h"
#include "nsScriptSecurityManager.h"
#include "mozilla/BasePrincipal.h"

class ContentPrincipal final : public mozilla::BasePrincipal
{
public:
  NS_DECL_NSISERIALIZABLE
  NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) override;
  NS_IMETHOD GetHashValue(uint32_t* aHashValue) override;
  NS_IMETHOD GetURI(nsIURI** aURI) override;
  NS_IMETHOD GetDomain(nsIURI** aDomain) override;
  NS_IMETHOD SetDomain(nsIURI* aDomain) override;
  NS_IMETHOD GetBaseDomain(nsACString& aBaseDomain) override;
  NS_IMETHOD GetAddonId(nsAString& aAddonId) override;
  bool IsCodebasePrincipal() const override { return true; }

  ContentPrincipal();

  // Init() must be called before the principal is in a usable state.
  nsresult Init(nsIURI* aCodebase,
                const mozilla::OriginAttributes& aOriginAttributes,
                const nsACString& aOriginNoSuffix);

  virtual nsresult GetScriptLocation(nsACString& aStr) override;

  /**
   * Called at startup to setup static data, e.g. about:config pref-observers.
   */
  static void InitializeStatics();

  static nsresult
  GenerateOriginNoSuffixFromURI(nsIURI* aURI, nsACString& aOrigin);

  nsCOMPtr<nsIURI> mDomain;
  nsCOMPtr<nsIURI> mCodebase;
  // If mCodebaseImmutable is true, mCodebase is non-null and immutable
  bool mCodebaseImmutable;
  bool mDomainImmutable;

protected:
  virtual ~ContentPrincipal();

  bool SubsumesInternal(nsIPrincipal* aOther,
                        DocumentDomainConsideration aConsideration) override;
  bool MayLoadInternal(nsIURI* aURI) override;

private:
  mozilla::Maybe<nsString> mAddonIdCache;
};

#define NS_PRINCIPAL_CONTRACTID "@mozilla.org/principal;1"
#define NS_PRINCIPAL_CID \
{ 0x653e0e4d, 0x3ee4, 0x45fa, \
  { 0xb2, 0x72, 0x97, 0xc2, 0x0b, 0xc0, 0x1e, 0xb8 } }

#endif // ContentPrincipal_h