зеркало из https://github.com/mozilla/gecko-dev.git
282 строки
11 KiB
C++
282 строки
11 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nsComponentManager_h__
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#define nsComponentManager_h__
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#include "nsIComponentManager.h"
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#include "nsIRegistry.h"
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#include "nsHashtable.h"
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#include "prtime.h"
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#include "prmon.h"
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class nsFactoryEntry;
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class nsDll;
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class nsIServiceManager;
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// Registry Factory creation function defined in nsRegistry.cpp
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// We hook into this function locally to create and register the registry
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// Since noone outside xpcom needs to know about this and nsRegistry.cpp
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// does not have a local include file, we are putting this definition
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// here rather than in nsIRegistry.h
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extern "C" NS_EXPORT nsresult NS_RegistryGetFactory(nsIFactory** aFactory);
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////////////////////////////////////////////////////////////////////////////////
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class nsComponentManagerImpl : public nsIComponentManager {
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public:
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NS_DECL_ISUPPORTS
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// nsIComponentManager methods:
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NS_IMETHOD FindFactory(const nsCID &aClass,
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nsIFactory **aFactory);
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// nsIComponentManager methods:
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NS_IMETHOD GetClassObject(const nsCID &aClass, const nsIID &aIID,
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void **aResult);
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// Finds a class ID for a specific Program ID
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NS_IMETHOD ProgIDToCLSID(const char *aProgID,
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nsCID *aClass);
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// Finds a Program ID for a specific class ID
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// caller frees the result with delete[]
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NS_IMETHOD CLSIDToProgID(nsCID *aClass,
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char* *aClassName,
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char* *aProgID);
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// Creates a class instance for a specific class ID
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NS_IMETHOD CreateInstance(const nsCID &aClass,
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nsISupports *aDelegate,
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const nsIID &aIID,
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void **aResult);
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// Convenience routine, creates a class instance for a specific ProgID
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NS_IMETHOD CreateInstance(const char *aProgID,
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nsISupports *aDelegate,
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const nsIID &aIID,
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void **aResult);
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// Manually registry a factory for a class
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NS_IMETHOD RegisterFactory(const nsCID &aClass,
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const char *aClassName,
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const char *aProgID,
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nsIFactory *aFactory,
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PRBool aReplace);
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// Manually register a dynamically loaded component.
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// The libraryPersistentDescriptor is what gets passed to the library
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// self register function from ComponentManager. The format of this string
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// is the same as nsIFileSpec::GetPersistentDescriptorString()
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//
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// This function will go away in favour of RegisterComponentSpec. In fact,
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// it internally turns around and calls RegisterComponentSpec.
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NS_IMETHOD RegisterComponent(const nsCID &aClass,
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const char *aClassName,
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const char *aProgID,
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const char *aLibraryPersistentDescriptor,
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PRBool aReplace,
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PRBool aPersist);
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// Register a component using its FileSpec as its identification
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// This is the more prevalent use.
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NS_IMETHOD RegisterComponentSpec(const nsCID &aClass,
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const char *aClassName,
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const char *aProgID,
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nsIFileSpec *aLibrary,
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PRBool aReplace,
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PRBool aPersist);
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// Register a component using its dllName. This could be a dll name with
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// no path so that LD_LIBRARY_PATH on unix or PATH on win can load it. Or
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// this could be a code fragment name on the Mac.
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NS_IMETHOD RegisterComponentLib(const nsCID &aClass,
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const char *aClassName,
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const char *aProgID,
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const char *adllName,
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PRBool aReplace,
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PRBool aPersist);
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// Manually unregister a factory for a class
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NS_IMETHOD UnregisterFactory(const nsCID &aClass,
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nsIFactory *aFactory);
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// Manually unregister a dynamically loaded component
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NS_IMETHOD UnregisterComponent(const nsCID &aClass,
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const char *aLibrary);
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// Manually unregister a dynamically loaded component
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NS_IMETHOD UnregisterComponentSpec(const nsCID &aClass,
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nsIFileSpec *aLibrary);
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// Unload dynamically loaded factories that are not in use
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NS_IMETHOD FreeLibraries(void);
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// Is the given CID currently registered?
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NS_IMETHOD IsRegistered(const nsCID &aClass,
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PRBool *aRegistered);
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// Get an enumeration of all the CIDs
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NS_IMETHOD EnumerateCLSIDs(nsIEnumerator** aEmumerator);
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// Get an enumeration of all the ProgIDs
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NS_IMETHOD EnumerateProgIDs(nsIEnumerator** aEmumerator);
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//////////////////////////////////////////////////////////////////////////////
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// DLL registration support
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// Autoregistration will try only files with these extensions.
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// All extensions are case insensitive.
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// ".dll", // Windows
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// ".dso", // Unix
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// ".so", // Unix
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// ".sl", // Unix: HP
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// ".shlb", // Mac
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// ".dlm", // new for all platforms
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//
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//
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NS_IMETHOD AutoRegister(RegistrationTime when, nsIFileSpec *directory);
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NS_IMETHOD AutoRegisterComponent(RegistrationTime when, nsIFileSpec *component);
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// nsComponentManagerImpl methods:
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nsComponentManagerImpl();
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virtual ~nsComponentManagerImpl();
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static nsComponentManagerImpl* gComponentManager;
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nsresult Init(void);
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nsresult PlatformPrePopulateRegistry();
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protected:
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nsresult LoadFactory(nsFactoryEntry *aEntry, nsIFactory **aFactory);
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nsFactoryEntry *GetFactoryEntry(const nsCID &aClass, PRBool checkRegistry);
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nsresult SyncComponentsInDir(RegistrationTime when, nsIFileSpec *dirSpec);
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nsresult SelfRegisterDll(nsDll *dll);
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nsresult SelfUnregisterDll(nsDll *dll);
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nsresult HashProgID(const char *aprogID, const nsCID &aClass);
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nsDll *CreateCachedDll(const char *persistentDescriptor, PRUint32 modDate, PRUint32 size);
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nsDll *CreateCachedDll(nsIFileSpec *dllSpec);
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nsDll *CreateCachedDllName(const char *dllName);
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nsresult UnloadLibraries(nsIServiceManager *servmgr);
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// The following functions are the only ones that operate on the persistent
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// registry
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nsresult PlatformInit(void);
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nsresult PlatformVersionCheck();
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nsresult PlatformCreateDll(const char *fullname, nsDll* *result);
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nsresult PlatformMarkNoComponents(nsDll *dll);
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nsresult PlatformRegister(const char *cidString, const char *className, const char *progID, nsDll *dll);
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nsresult PlatformUnregister(const char *cidString, const char *aLibrary);
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nsresult PlatformFind(const nsCID &aCID, nsDll* *aDll);
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nsresult PlatformProgIDToCLSID(const char *aProgID, nsCID *aClass);
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nsresult PlatformCLSIDToProgID(nsCID *aClass, char* *aClassName, char* *aProgID);
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void PlatformGetFileInfo(nsIRegistry::Key Key, PRUint32 *lastModifiedTime, PRUint32 *fileSize);
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void PlatformSetFileInfo(nsIRegistry::Key Key, PRUint32 lastModifiedTime, PRUint32 fileSize);
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protected:
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nsObjectHashtable* mFactories;
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nsObjectHashtable* mProgIDs;
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PRMonitor* mMon;
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nsObjectHashtable* mDllStore;
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nsIRegistry* mRegistry;
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nsIRegistry::Key mXPCOMKey;
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nsIRegistry::Key mClassesKey;
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nsIRegistry::Key mCLSIDKey;
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PRBool mPrePopulationDone;
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};
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#define NS_MAX_FILENAME_LEN 1024
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#define NS_ERROR_IS_DIR NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_XPCOM, 24)
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#ifdef XP_UNIX
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/* The default registry on the unix system is $HOME/.mozilla/registry per
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* vr_findGlobalRegName(). vr_findRegFile() will create the registry file
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* if it doesn't exist. But it wont create directories.
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*
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* Hence we need to create the directory if it doesn't exist already.
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*
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* Why create it here as opposed to the app ?
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* ------------------------------------------
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* The app cannot create the directory in main() as most of the registry
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* and initialization happens due to use of static variables.
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* And we dont want to be dependent on the order in which
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* these static stuff happen.
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*
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* Permission for the $HOME/.mozilla will be Read,Write,Execute
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* for user only. Nothing to group and others.
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*/
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#define NS_MOZILLA_DIR_NAME ".mozilla"
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#define NS_MOZILLA_DIR_PERMISSION 00700
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#endif /* XP_UNIX */
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#ifdef XP_BEOS
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#define NS_MOZILLA_DIR_NAME "mozilla"
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#define NS_MOZILLA_DIR_PERMISSION 00700
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#endif /* XP_BEOS */
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/**
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* When using the registry we put a version number in it.
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* If the version number that is in the registry doesn't match
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* the following, we ignore the registry. This lets news versions
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* of the software deal with old formats of registry and not
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*
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* alpha0.20 : First time we did versioning
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* alpha0.30 : Changing autoreg to begin registration from ./components on unix
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* alpha0.40 : repository -> component manager
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* alpha0.50 : using nsIRegistry
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* alpha0.60 : xpcom 2.0 landing
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* alpha0.70 : using nsIFileSpec. PRTime -> PRUint32
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*/
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#define NS_XPCOM_COMPONENT_MANAGER_VERSION_STRING "alpha0.70"
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////////////////////////////////////////////////////////////////////////////////
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/**
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* Class: nsFactoryEntry()
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*
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* There are two types of FactoryEntries.
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*
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* 1. {CID, dll} mapping.
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* Factory is a consequence of the dll. These can be either session
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* specific or persistent based on whether we write this
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* to the registry or not.
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*
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* 2. {CID, factory} mapping
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* These are strictly session specific and in memory only.
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*/
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class nsFactoryEntry {
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public:
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nsFactoryEntry(const nsCID &aClass, nsDll *dll);
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nsFactoryEntry(const nsCID &aClass, nsIFactory *aFactory);
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~nsFactoryEntry();
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nsresult Init(nsHashtable* dllHashtable, const nsCID &aClass, const char *aLibrary,
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PRTime lastModTime, PRUint32 fileSize);
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nsCID cid;
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nsIFactory *factory;
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// DO NOT DELETE THIS. Many nsFactoryEntry(s) could be sharing the same Dll.
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// This gets deleted from the dllStore going away.
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nsDll *dll;
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};
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////////////////////////////////////////////////////////////////////////////////
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#endif // nsComponentManager_h__
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