The Tor Browser: chrome/src/nsChromeRegistry.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     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/. */

     6 #ifndef nsChromeRegistry_h

     7 #define nsChromeRegistry_h

     9 #include "nsIToolkitChromeRegistry.h"

    10 #include "nsIObserver.h"

    11 #include "nsWeakReference.h"

    13 #ifdef MOZ_XUL

    14 #include "nsIXULOverlayProvider.h"

    15 #endif

    17 #include "nsString.h"

    18 #include "nsURIHashKey.h"

    19 #include "nsInterfaceHashtable.h"

    20 #include "nsXULAppAPI.h"

    21 #include "nsIXPConnect.h"

    23 #include "mozilla/FileLocation.h"

    25 class nsIDOMWindow;

    26 class nsIPrefBranch;

    27 class nsIURL;

    29 // The chrome registry is actually split between nsChromeRegistryChrome and

    30 // nsChromeRegistryContent. The work/data that is common to both resides in

    31 // the shared nsChromeRegistry implementation, with operations that only make

    32 // sense for one side erroring out in the other.

    34 // for component registration

    35 // {47049e42-1d87-482a-984d-56ae185e367a}

    36 #define NS_CHROMEREGISTRY_CID \

    37 { 0x47049e42, 0x1d87, 0x482a, { 0x98, 0x4d, 0x56, 0xae, 0x18, 0x5e, 0x36, 0x7a } }

    39 class nsChromeRegistry : public nsIToolkitChromeRegistry,

    40 #ifdef MOZ_XUL

    41                          public nsIXULOverlayProvider,

    42 #endif

    43                          public nsIObserver,

    44                          public nsSupportsWeakReference

    45 {

    46 public:

    47   NS_DECL_ISUPPORTS

    49   // nsIXULChromeRegistry methods:

    50   NS_IMETHOD ReloadChrome();

    51   NS_IMETHOD RefreshSkins();

    52   NS_IMETHOD AllowScriptsForPackage(nsIURI* url,

    53                                     bool* _retval);

    54   NS_IMETHOD AllowContentToAccess(nsIURI* url,

    55                                   bool* _retval);

    57   // nsIChromeRegistry methods:

    58   NS_IMETHOD_(bool) WrappersEnabled(nsIURI *aURI);

    59   NS_IMETHOD ConvertChromeURL(nsIURI* aChromeURI, nsIURI* *aResult);

    61   // nsChromeRegistry methods:

    62   nsChromeRegistry() : mInitialized(false) { }

    63   virtual ~nsChromeRegistry();

    65   virtual nsresult Init();

    67   static already_AddRefed<nsIChromeRegistry> GetService();

    69   static nsChromeRegistry* gChromeRegistry;

    71   static nsresult Canonify(nsIURL* aChromeURL);

    73 protected:

    74   void FlushSkinCaches();

    75   void FlushAllCaches();

    77   // Update the selected locale used by the chrome registry, and fire a

    78   // notification about this change

    79   virtual nsresult UpdateSelectedLocale() = 0;

    81   static void LogMessage(const char* aMsg, ...);

    82   static void LogMessageWithContext(nsIURI* aURL, uint32_t aLineNumber, uint32_t flags,

    83                                     const char* aMsg, ...);

    85   virtual nsIURI* GetBaseURIFromPackage(const nsCString& aPackage,

    86                                         const nsCString& aProvider,

    87                                         const nsCString& aPath) = 0;

    88   virtual nsresult GetFlagsFromPackage(const nsCString& aPackage,

    89                                        uint32_t* aFlags) = 0;

    91   nsresult SelectLocaleFromPref(nsIPrefBranch* prefs);

    93   static nsresult RefreshWindow(nsIDOMWindow* aWindow);

    94   static nsresult GetProviderAndPath(nsIURL* aChromeURL,

    95                                      nsACString& aProvider, nsACString& aPath);

    97 public:

    98   static already_AddRefed<nsChromeRegistry> GetSingleton();

   100   struct ManifestProcessingContext

   101   {

   102     ManifestProcessingContext(NSLocationType aType, mozilla::FileLocation &aFile)

   103       : mType(aType)

   104       , mFile(aFile)

   105     { }

   107     ~ManifestProcessingContext()

   108     { }

   110     nsIURI* GetManifestURI();

   111     nsIXPConnect* GetXPConnect();

   113     already_AddRefed<nsIURI> ResolveURI(const char* uri);

   115     NSLocationType mType;

   116     mozilla::FileLocation mFile;

   117     nsCOMPtr<nsIURI> mManifestURI;

   118     nsCOMPtr<nsIXPConnect> mXPConnect;

   119   };

   121   virtual void ManifestContent(ManifestProcessingContext& cx, int lineno,

   122                                char *const * argv, bool platform,

   123                                bool contentaccessible) = 0;

   124   virtual void ManifestLocale(ManifestProcessingContext& cx, int lineno,

   125                               char *const * argv, bool platform,

   126                               bool contentaccessible) = 0;

   127   virtual void ManifestSkin(ManifestProcessingContext& cx, int lineno,

   128                             char *const * argv, bool platform,

   129                             bool contentaccessible) = 0;

   130   virtual void ManifestOverlay(ManifestProcessingContext& cx, int lineno,

   131                                char *const * argv, bool platform,

   132                                bool contentaccessible) = 0;

   133   virtual void ManifestStyle(ManifestProcessingContext& cx, int lineno,

   134                              char *const * argv, bool platform,

   135                              bool contentaccessible) = 0;

   136   virtual void ManifestOverride(ManifestProcessingContext& cx, int lineno,

   137                                 char *const * argv, bool platform,

   138                                 bool contentaccessible) = 0;

   139   virtual void ManifestResource(ManifestProcessingContext& cx, int lineno,

   140                                 char *const * argv, bool platform,

   141                                 bool contentaccessible) = 0;

   143   // Available flags

   144   enum {

   145     // This is a "platform" package (e.g. chrome://global-platform/).

   146     // Appends one of win/ unix/ mac/ to the base URI.

   147     PLATFORM_PACKAGE = 1 << 0,

   149     // This package should use the new XPCNativeWrappers to separate

   150     // content from chrome. This flag is currently unused (because we call

   151     // into xpconnect at registration time).

   152     XPCNATIVEWRAPPERS = 1 << 1,

   154     // Content script may access files in this package

   155     CONTENT_ACCESSIBLE = 1 << 2

   156   };

   158   bool mInitialized;

   160   // "Override" table (chrome URI string -> real URI)

   161   nsInterfaceHashtable<nsURIHashKey, nsIURI> mOverrideTable;

   162 };

   164 #endif // nsChromeRegistry_h

The Tor Browser / file revision

chrome/src/nsChromeRegistry.h@97036ab72558

chrome/src/nsChromeRegistry.h