mozilla
/
pjs
зеркало из https://github.com/mozilla/pjs.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность
pjs/xpcom/components/nsComponentManager.cpp

2287 строки
68 KiB
C++
Исходник Ответственный История

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*/
#include <stdlib.h>
#include "nsCOMPtr.h"
#include "nsComponentManager.h"
#include "nsIServiceManager.h"
#include "nsSpecialSystemDirectory.h"
#include "nsCRT.h"
#include "nsIEnumerator.h"
#include "nsIModule.h"
#include "nsHashtableEnumerator.h"
#include "nsISupportsPrimitives.h"
#include "nsIComponentLoader.h"
#include "nsNativeComponentLoader.h"
#include "nsXPIDLString.h"
#include "plstr.h"
#include "prlink.h"
#include "prsystem.h"
#include "prprf.h"
#include "xcDll.h"
#include "prerror.h"
#include "prmem.h"
#include "NSReg.h"
#include "prcmon.h"
#include "prthread.h" /* XXX: only used for the NSPR initialization hack (rick) */
#ifdef XP_BEOS
#include <FindDirectory.h>
#include <Path.h>
#endif
// Logging of debug output
#define FORCE_PR_LOG /* Allow logging in the release build */
#include "prlog.h"
PRLogModuleInfo* nsComponentManagerLog = NULL;
// Enable printing of critical errors on screen even for release builds
#define PRINT_CRITICAL_ERROR_TO_SCREEN
// Common Key Names
const char xpcomBaseName[]="XPCOM";
const char xpcomKeyName[] ="Software/Mozilla/XPCOM";
const char mozillaKeyName[]="Software/Mozilla";
const char classesKeyName[]="Classes";
const char classIDKeyName[]="CLSID";
const char classesClassIDKeyName[]="Classes/CLSID";
const char componentLoadersKeyName[]="ComponentLoaders";
// Common Value Names
const char classIDValueName[]="CLSID";
const char versionValueName[]="VersionString";
const char lastModValueName[]="LastModTimeStamp";
const char fileSizeValueName[]="FileSize";
const char componentCountValueName[]="ComponentsCount";
const char progIDValueName[]="ProgID";
const char classNameValueName[]="ClassName";
const char inprocServerValueName[]="InprocServer";
const char componentTypeValueName[]="ComponentType";
const char nativeComponentType[]="application/x-mozilla-native";
const static char XPCOM_ABSCOMPONENT_PREFIX[] = "abs:";
const static char XPCOM_RELCOMPONENT_PREFIX[] = "rel:";
const char XPCOM_LIB_PREFIX[] = "lib:";
// We define a CID that is used to indicate the non-existence of a
// progid in the hash table.
#define NS_NO_CID { 0x0, 0x0, 0x0, { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 } }
static NS_DEFINE_CID(kNoCID, NS_NO_CID);
// Build is using USE_NSREG to turn off xpcom using registry
// but internally we use USE_REGISTRY. Map them propertly.
#ifdef USE_NSREG
#define USE_REGISTRY
#endif /* USE_NSREG */
nsresult
nsCreateInstanceByCID::operator()( const nsIID& aIID, void** aInstancePtr ) const
{
nsresult status = nsComponentManager::CreateInstance(mCID, mOuter, aIID, aInstancePtr);
if ( !NS_SUCCEEDED(status) )
*aInstancePtr = 0;
if ( mErrorPtr )
*mErrorPtr = status;
return status;
}
nsresult
nsCreateInstanceByProgID::operator()( const nsIID& aIID, void** aInstancePtr ) const
{
nsresult status;
if ( mProgID )
{
if ( !NS_SUCCEEDED(status = nsComponentManager::CreateInstance(mProgID, mOuter, aIID, aInstancePtr)) )
*aInstancePtr = 0;
}
else
status = NS_ERROR_NULL_POINTER;
if ( mErrorPtr )
*mErrorPtr = status;
return status;
}
/* prototypes for the Mac */
PRBool
nsFactoryEntry_Destroy(nsHashKey *aKey, void *aData, void* closure);
PRBool
nsCID_Destroy(nsHashKey *aKey, void *aData, void* closure);
////////////////////////////////////////////////////////////////////////////////
// nsFactoryEntry
////////////////////////////////////////////////////////////////////////////////
nsFactoryEntry::nsFactoryEntry(const nsCID &aClass,
const char *aLocation,
const char *aType,
nsIComponentLoader *aLoader)
: cid(aClass), factory(nsnull), loader(aLoader)
{
loader = aLoader;
type = aType;
location = aLocation;
}
nsFactoryEntry::nsFactoryEntry(const nsCID &aClass, nsIFactory *aFactory)
: cid(aClass), loader(nsnull)
{
factory = aFactory;
}
nsFactoryEntry::~nsFactoryEntry(void)
{
factory = 0;
loader = 0;
}
////////////////////////////////////////////////////////////////////////////////
// nsComponentManagerImpl
////////////////////////////////////////////////////////////////////////////////
nsComponentManagerImpl::nsComponentManagerImpl()
: mFactories(NULL), mProgIDs(NULL), mLoaders(0), mMon(NULL),
mRegistry(NULL), mPrePopulationDone(PR_FALSE),
mNativeComponentLoader(0), mShuttingDown(NS_SHUTDOWN_NEVERHAPPENED)
{
NS_INIT_REFCNT();
}
PRBool
nsFactoryEntry_Destroy(nsHashKey *aKey, void *aData, void* closure)
{
nsFactoryEntry* entry = NS_STATIC_CAST(nsFactoryEntry*, aData);
delete entry;
return PR_TRUE;
}
PRBool
nsCID_Destroy(nsHashKey *aKey, void *aData, void* closure)
{
nsCID* entry = NS_STATIC_CAST(nsCID*, aData);
// nasty hack. We "know" that kNoCID was entered into the hash table.
if (entry != &kNoCID)
delete entry;
return PR_TRUE;
}
nsresult nsComponentManagerImpl::Init(void)
{
PR_ASSERT(mShuttingDown != NS_SHUTDOWN_INPROGRESS);
if (mShuttingDown == NS_SHUTDOWN_INPROGRESS)
return NS_ERROR_FAILURE;
mShuttingDown = NS_SHUTDOWN_NEVERHAPPENED;
if (nsComponentManagerLog == NULL)
{
nsComponentManagerLog = PR_NewLogModule("nsComponentManager");
}
if (mFactories == NULL) {
mFactories = new nsObjectHashtable(nsnull, nsnull, // should never be copied
nsFactoryEntry_Destroy, nsnull,
256, /* Thread Safe */ PR_TRUE);
if (mFactories == NULL)
return NS_ERROR_OUT_OF_MEMORY;
}
if (mProgIDs == NULL) {
mProgIDs = new nsObjectHashtable(nsnull, nsnull, // should never be copied
nsCID_Destroy, nsnull,
256, /* Thread Safe */ PR_TRUE);
if (mProgIDs == NULL)
return NS_ERROR_OUT_OF_MEMORY;
}
if (mMon == NULL) {
mMon = PR_NewMonitor();
if (mMon == NULL)
return NS_ERROR_OUT_OF_MEMORY;
}
if (mNativeComponentLoader == nsnull) {
/* Create the NativeComponentLoader */
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("creating native ComponentLoader"));
mNativeComponentLoader = new nsNativeComponentLoader();
if (!mNativeComponentLoader)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(mNativeComponentLoader);
}
if (mLoaders == nsnull) {
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("creating component loader table"));
mLoaders = new nsSupportsHashtable(16, /* Thread safe */ PR_TRUE);
if (mLoaders == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
nsStringKey loaderKey(nativeComponentType);
mLoaders->Put(&loaderKey, mNativeComponentLoader);
}
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Initialized."));
#ifdef USE_REGISTRY
NR_StartupRegistry();
PlatformInit();
#endif
return NS_OK;
}
nsresult nsComponentManagerImpl::Shutdown(void)
{
PR_ASSERT(mShuttingDown == NS_SHUTDOWN_NEVERHAPPENED);
if (mShuttingDown != NS_SHUTDOWN_NEVERHAPPENED)
return NS_ERROR_FAILURE;
mShuttingDown = NS_SHUTDOWN_INPROGRESS;
// Shutdown the component manager
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS, ("nsComponentManager: Beginning Shutdown."));
// Release all cached factories
if (mFactories)
delete mFactories;
// Unload libraries
UnloadLibraries(NULL, NS_Shutdown);
// Release Progid hash tables
if (mProgIDs)
delete mProgIDs;
#ifdef USE_REGISTRY
// Release registry
NS_IF_RELEASE(mRegistry);
#endif /* USE_REGISTRY */
delete mComponentsDir;
// Release all the component loaders
if (mLoaders)
delete mLoaders;
// we have an extra reference on this one, which is probably a good thing
NS_IF_RELEASE(mNativeComponentLoader);
// Destroy the Lock
if (mMon)
PR_DestroyMonitor(mMon);
#ifdef USE_REGISTRY
NR_ShutdownRegistry();
#endif /* USE_REGISTRY */
mShuttingDown = NS_SHUTDOWN_COMPLETE;
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS, ("nsComponentManager: Shutdown complete."));
return NS_OK;
}
nsComponentManagerImpl::~nsComponentManagerImpl()
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS, ("nsComponentManager: Beginning destruction."));
if (mShuttingDown != NS_SHUTDOWN_COMPLETE)
Shutdown();
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS, ("nsComponentManager: Destroyed."));
}
NS_IMPL_ISUPPORTS3(nsComponentManagerImpl, nsIComponentManager,
nsISupportsWeakReference, nsIInterfaceRequestor)
////////////////////////////////////////////////////////////////////////////////
// nsComponentManagerImpl: Platform methods
////////////////////////////////////////////////////////////////////////////////
#ifdef USE_REGISTRY
nsresult
nsComponentManagerImpl::PlatformInit(void)
{
nsresult rv = NS_ERROR_FAILURE;
// We need to create our registry. Since we are in the constructor
// we haven't gone as far as registering the registry factory.
// Hence, we hand create a registry.
if (mRegistry == NULL) {
nsIFactory *registryFactory = NULL;
rv = NS_RegistryGetFactory(&registryFactory);
if (NS_SUCCEEDED(rv))
{
rv = registryFactory->CreateInstance(NULL, NS_GET_IID(nsIRegistry),(void **)&mRegistry);
if (NS_FAILED(rv)) return rv;
NS_RELEASE(registryFactory);
}
}
#ifdef XP_UNIX
// Create ~/.mozilla as that is the default place for the registry file
/* The default registry on the unix system is $HOME/.mozilla/registry per
* vr_findGlobalRegName(). vr_findRegFile() will create the registry file
* if it doesn't exist. But it wont create directories.
*
* Hence we need to create the directory if it doesn't exist already.
*
* Why create it here as opposed to the app ?
* ------------------------------------------
* The app cannot create the directory in main() as most of the registry
* and initialization happens due to use of static variables.
* And we dont want to be dependent on the order in which
* these static stuff happen.
*
* Permission for the $HOME/.mozilla will be Read,Write,Execute
* for user only. Nothing to group and others.
*/
char *home = getenv("HOME");
if (home != NULL)
{
char dotMozillaDir[1024];
PR_snprintf(dotMozillaDir, sizeof(dotMozillaDir),
"%s/" NS_MOZILLA_DIR_NAME, home);
if (PR_Access(dotMozillaDir, PR_ACCESS_EXISTS) != PR_SUCCESS)
{
PR_MkDir(dotMozillaDir, NS_MOZILLA_DIR_PERMISSION);
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Creating Directory %s", dotMozillaDir));
}
}
#endif /* XP_UNIX */
#ifdef XP_BEOS
BPath p;
const char *settings = "/boot/home/config/settings";
if(find_directory(B_USER_SETTINGS_DIRECTORY, &p) == B_OK)
settings = p.Path();
char settingsMozillaDir[1024];
PR_snprintf(settingsMozillaDir, sizeof(settingsMozillaDir),
"%s/" NS_MOZILLA_DIR_NAME, settings);
if (PR_Access(settingsMozillaDir, PR_ACCESS_EXISTS) != PR_SUCCESS) {
PR_MkDir(settingsMozillaDir, NS_MOZILLA_DIR_PERMISSION);
printf("nsComponentManager: Creating Directory %s\n", settingsMozillaDir);
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Creating Directory %s", settingsMozillaDir));
}
#endif
// Open the App Components registry. We will keep it open forever!
rv = mRegistry->OpenWellKnownRegistry(nsIRegistry::ApplicationComponentRegistry);
if (NS_FAILED(rv)) return rv;
// Check the version of registry. Nuke old versions.
PlatformVersionCheck();
// Open common registry keys here to speed access
// Do this after PlatformVersionCheck as it may re-create our keys
rv = mRegistry->AddSubtree(nsIRegistry::Common, xpcomKeyName, &mXPCOMKey);
if (NS_FAILED(rv)) return rv;
rv = mRegistry->AddSubtree(nsIRegistry::Common, classesKeyName, &mClassesKey);
if (NS_FAILED(rv)) return rv;
rv = mRegistry->AddSubtree(nsIRegistry::Common, classIDKeyName, &mCLSIDKey);
if (NS_FAILED(rv)) return rv;
mComponentsDir =
new nsSpecialSystemDirectory(nsSpecialSystemDirectory::XPCOM_CurrentProcessComponentDirectory);
if (!mComponentsDir)
return NS_ERROR_OUT_OF_MEMORY;
mComponentsDirLen = strlen(mComponentsDir->GetNativePathCString());
if (mNativeComponentLoader) {
/* now that we have the registry, Init the native loader */
rv = mNativeComponentLoader->Init(this, mRegistry);
} else {
PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
("no native component loader available for init"));
}
return rv;
}
/**
* PlatformVersionCheck()
*
* Checks to see if the XPCOM hierarchy in the registry is the same as that of
* the software as defined by NS_XPCOM_COMPONENT_MANAGER_VERSION_STRING
*/
nsresult
nsComponentManagerImpl::PlatformVersionCheck()
{
nsRegistryKey xpcomKey;
nsresult rv;
rv = mRegistry->AddSubtree(nsIRegistry::Common, xpcomKeyName, &xpcomKey);
if (NS_FAILED(rv)) return rv;
nsXPIDLCString buf;
nsresult err = mRegistry->GetString(xpcomKey, versionValueName,
getter_Copies(buf));
// If there is a version mismatch or no version string, we got an old registry.
// Delete the old repository hierarchies and recreate version string
if (NS_FAILED(err) || PL_strcmp(buf, NS_XPCOM_COMPONENT_MANAGER_VERSION_STRING))
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Registry version mismatch (%s vs %s)."
"Nuking xpcom registry hierarchy.", (const char *)buf,
NS_XPCOM_COMPONENT_MANAGER_VERSION_STRING));
// Delete the XPCOM and CLSID hierarchy
nsRegistryKey mozillaKey;
rv = mRegistry->GetSubtree(nsIRegistry::Common, mozillaKeyName,
&mozillaKey);
if(NS_FAILED(rv))
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Failed To Get Subtree (%s)",
mozillaKeyName));
}
else
{
rv = mRegistry->RemoveSubtreeRaw(mozillaKey, xpcomBaseName);
if(NS_FAILED(rv))
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Failed To Nuke Subtree (%s)",xpcomKeyName));
return rv;
}
}
rv = mRegistry->GetSubtree(nsIRegistry::Common,classesKeyName, &mozillaKey);
if(NS_FAILED(rv))
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Failed To Get Subtree (%s)",classesKeyName));
}
else
{
rv = mRegistry->RemoveSubtreeRaw(mozillaKey, classIDKeyName);
if(NS_FAILED(rv))
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Failed To Nuke Subtree (%s/%s)",classesKeyName,classIDKeyName));
return rv;
}
}
// Recreate XPCOM and CLSID keys
rv = mRegistry->AddSubtree(nsIRegistry::Common,xpcomKeyName, &xpcomKey);
if(NS_FAILED(rv))
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Failed To Add Subtree (%s)",xpcomKeyName));
return rv;
}
rv = mRegistry->AddSubtree(nsIRegistry::Common,classesClassIDKeyName, NULL);
if(NS_FAILED(rv))
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Failed To Add Subtree (%s)",classesClassIDKeyName));
return rv;
}
rv = mRegistry->SetString(xpcomKey,versionValueName, NS_XPCOM_COMPONENT_MANAGER_VERSION_STRING);
if(NS_FAILED(rv))
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Failed To Set String (Version) Under (%s)",xpcomKeyName));
return rv;
}
}
else
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: platformVersionCheck() passed."));
}
rv = mRegistry->AddSubtree(xpcomKey, componentLoadersKeyName,
&mLoadersKey);
if (NS_FAILED(rv))
return rv;
return NS_OK;
}
#if 0
void
nsComponentManagerImpl::PlatformSetFileInfo(nsRegistryKey key, PRUint32 lastModifiedTime, PRUint32 fileSize)
{
mRegistry->SetInt(key, lastModValueName, lastModifiedTime);
mRegistry->SetInt(key, fileSizeValueName, fileSize);
}
/**
* PlatformMarkNoComponents(nsDll *dll)
*
* Stores the dll name, last modified time, size and 0 for number of
* components in dll in the registry at location
* ROOTKEY_COMMON/Software/Netscape/XPCOM/dllname
*/
nsresult
nsComponentManagerImpl::PlatformMarkNoComponents(nsDll *dll)
{
PR_ASSERT(mRegistry!=NULL);
nsresult rv;
nsRegistryKey dllPathKey;
rv = mRegistry->AddSubtreeRaw(mXPCOMKey, dll->GetPersistentDescriptorString(), &dllPathKey);
if(NS_FAILED(rv))
{
return rv;
}
PlatformSetFileInfo(dllPathKey, dll->GetLastModifiedTime(), dll->GetSize());
rv = mRegistry->SetInt(dllPathKey, componentCountValueName, 0);
return rv;
}
nsresult
nsComponentManagerImpl::PlatformRegister(const char *cidString,
const char *className,
const char * progID, nsDll *dll)
{
// Preconditions
PR_ASSERT(cidString != NULL);
PR_ASSERT(dll != NULL);
PR_ASSERT(mRegistry !=NULL);
nsresult rv;
nsRegistryKey IDkey;
rv = mRegistry->AddSubtreeRaw(mCLSIDKey, cidString, &IDkey);
if (NS_FAILED(rv)) return (rv);
rv = mRegistry->SetString(IDkey,classNameValueName, className);
if (progID)
{
rv = mRegistry->SetString(IDkey,progIDValueName, progID);
}
rv = mRegistry->SetString(IDkey, inprocServerValueName, dll->GetPersistentDescriptorString());
if (progID)
{
nsRegistryKey progIDKey;
rv = mRegistry->AddSubtreeRaw(mClassesKey, progID, &progIDKey);
rv = mRegistry->SetString(progIDKey, classIDValueName, cidString);
}
// XXX Gross. LongLongs dont have a serialization format. This makes
// XXX the registry non-xp. Someone beat on the nspr people to get
// XXX a longlong serialization function please!
nsRegistryKey dllPathKey;
rv = mRegistry->AddSubtreeRaw(mXPCOMKey,dll->GetPersistentDescriptorString(), &dllPathKey);
PlatformSetFileInfo(dllPathKey, dll->GetLastModifiedTime(), dll->GetSize());
PRInt32 nComponents = 0;
rv = mRegistry->GetInt(dllPathKey, componentCountValueName, &nComponents);
nComponents++;
rv = mRegistry->SetInt(dllPathKey,componentCountValueName, nComponents);
return rv;
}
#endif
nsresult
nsComponentManagerImpl::PlatformUnregister(const char *cidString,
const char *aLibrary)
{
PR_ASSERT(mRegistry!=NULL);
nsresult rv;
nsRegistryKey cidKey;
rv = mRegistry->AddSubtreeRaw(mCLSIDKey, cidString, &cidKey);
char *progID = NULL;
rv = mRegistry->GetString(cidKey, progIDValueName, &progID);
if(NS_SUCCEEDED(rv))
{
mRegistry->RemoveSubtreeRaw(mClassesKey, progID);
PR_FREEIF(progID);
}
mRegistry->RemoveSubtree(mCLSIDKey, cidString);
nsRegistryKey libKey;
rv = mRegistry->GetSubtreeRaw(mXPCOMKey, aLibrary, &libKey);
if(NS_FAILED(rv)) return rv;
// We need to reduce the ComponentCount by 1.
// If the ComponentCount hits 0, delete the entire key.
PRInt32 nComponents = 0;
rv = mRegistry->GetInt(libKey, componentCountValueName, &nComponents);
if(NS_FAILED(rv)) return rv;
nComponents--;
if (nComponents <= 0)
{
rv = mRegistry->RemoveSubtreeRaw(mXPCOMKey, aLibrary);
}
else
{
rv = mRegistry->SetInt(libKey, componentCountValueName, nComponents);
}
return rv;
}
nsresult
nsComponentManagerImpl::PlatformFind(const nsCID &aCID, nsFactoryEntry* *result)
{
PR_ASSERT(mRegistry!=NULL);
nsresult rv;
char *cidString = aCID.ToString();
nsRegistryKey cidKey;
rv = mRegistry->GetSubtreeRaw(mCLSIDKey, cidString, &cidKey);
delete [] cidString;
if (NS_FAILED(rv)) return rv;
nsXPIDLCString library;
rv = mRegistry->GetString(cidKey, inprocServerValueName,
getter_Copies(library));
if (NS_FAILED(rv))
{
// Registry inconsistent. No File name for CLSID.
return rv;
}
nsXPIDLCString componentType;
rv = mRegistry->GetString(cidKey, componentTypeValueName,
getter_Copies(componentType));
if (NS_FAILED(rv))
if (rv == NS_ERROR_REG_NOT_FOUND)
/* missing componentType, we assume application/x-moz-native */
componentType = nativeComponentType;
else
return rv; // XXX translate error code?
nsCOMPtr<nsIComponentLoader> loader;
rv = GetLoaderForType(componentType, getter_AddRefs(loader));
if (NS_FAILED(rv))
return rv;
nsFactoryEntry *res = new nsFactoryEntry(aCID, library, componentType,
loader);
if (res == NULL)
return NS_ERROR_OUT_OF_MEMORY;
*result = res;
return NS_OK;
}
nsresult
nsComponentManagerImpl::PlatformProgIDToCLSID(const char *aProgID, nsCID *aClass)
{
PR_ASSERT(aClass != NULL);
PR_ASSERT(mRegistry);
nsresult rv;
nsRegistryKey progIDKey;
rv = mRegistry->GetSubtreeRaw(mClassesKey, aProgID, &progIDKey);
if (NS_FAILED(rv)) return NS_ERROR_FACTORY_NOT_REGISTERED;
char *cidString;
rv = mRegistry->GetString(progIDKey, classIDValueName, &cidString);
if(NS_FAILED(rv)) return rv;
if (!(aClass->Parse(cidString)))
{
rv = NS_ERROR_FAILURE;
}
PR_FREEIF(cidString);
return rv;
}
nsresult
nsComponentManagerImpl::PlatformCLSIDToProgID(const nsCID *aClass,
char* *aClassName, char* *aProgID)
{
PR_ASSERT(aClass);
PR_ASSERT(mRegistry);
nsresult rv;
char* cidStr = aClass->ToString();
nsRegistryKey cidKey;
rv = mRegistry->GetSubtreeRaw(mCLSIDKey, cidStr, &cidKey);
if(NS_FAILED(rv)) return rv;
PR_FREEIF(cidStr);
char* classnameString;
rv = mRegistry->GetString(cidKey, classNameValueName, &classnameString);
if(NS_FAILED(rv)) return rv;
*aClassName = classnameString;
char* progidString;
rv = mRegistry->GetString(cidKey,progIDValueName,&progidString);
if (NS_FAILED(rv)) return rv;
*aProgID = progidString;
return NS_OK;
}
nsresult nsComponentManagerImpl::PlatformPrePopulateRegistry()
{
nsresult rv;
if (mPrePopulationDone)
return NS_OK;
// Read in all CID entries and populate the mFactories
nsCOMPtr<nsIEnumerator> cidEnum;
rv = mRegistry->EnumerateSubtrees( mCLSIDKey, getter_AddRefs(cidEnum));
if (NS_FAILED(rv)) return rv;
rv = cidEnum->First();
for (; NS_SUCCEEDED(rv) && (cidEnum->IsDone() != NS_OK); (rv = cidEnum->Next()))
{
nsCOMPtr<nsISupports> base;
rv = cidEnum->CurrentItem(getter_AddRefs(base));
if (NS_FAILED(rv)) continue;
// Get specific interface.
nsCOMPtr<nsIRegistryNode> node;
node = do_QueryInterface(base);
if (!node) continue;
// Get library name
nsXPIDLCString cidString;
rv = node->GetName(getter_Copies(cidString));
if (NS_FAILED(rv)) continue;
// Get key associated with library
nsRegistryKey cidKey;
rv = node->GetKey(&cidKey);
if (NS_FAILED(rv)) continue;
// Create the CID entry
nsXPIDLCString library;
rv = mRegistry->GetString(cidKey, inprocServerValueName,
getter_Copies(library));
if (NS_FAILED(rv)) continue;
nsCID aClass;
if (!(aClass.Parse(cidString))) continue;
nsXPIDLCString componentType;
if (NS_FAILED(mRegistry->GetString(cidKey, componentTypeValueName,
getter_Copies(componentType))))
continue;
nsFactoryEntry* entry =
new nsFactoryEntry(aClass, library, componentType,
nsCRT::strcmp(componentType,
nativeComponentType) ?
0 : mNativeComponentLoader);
if (!entry)
continue;
nsIDKey key(aClass);
mFactories->Put(&key, entry);
}
// Finally read in PROGID -> CID mappings
nsCOMPtr<nsIEnumerator> progidEnum;
rv = mRegistry->EnumerateSubtrees( mClassesKey, getter_AddRefs(progidEnum));
if (NS_FAILED(rv)) return rv;
rv = progidEnum->First();
for (; NS_SUCCEEDED(rv) && (progidEnum->IsDone() != NS_OK); (rv = progidEnum->Next()))
{
nsCOMPtr<nsISupports> base;
rv = progidEnum->CurrentItem(getter_AddRefs(base));
if (NS_FAILED(rv)) continue;
// Get specific interface.
nsIID nodeIID = NS_IREGISTRYNODE_IID;
nsCOMPtr<nsIRegistryNode> node;
rv = base->QueryInterface(nodeIID, getter_AddRefs(node));
if (NS_FAILED(rv)) continue;
// Get the progid string
nsXPIDLCString progidString;
rv = node->GetName(getter_Copies(progidString));
if (NS_FAILED(rv)) continue;
// Get cid string
nsRegistryKey progidKey;
rv = node->GetKey(&progidKey);
if (NS_FAILED(rv)) continue;
nsXPIDLCString cidString;
rv = mRegistry->GetString(progidKey, classIDValueName,
getter_Copies(cidString));
if (NS_FAILED(rv)) continue;
nsCID *aClass = new nsCID();
if (!aClass) continue; // Protect against out of memory.
if (!(aClass->Parse(cidString)))
{
delete aClass;
continue;
}
// put the {progid, Cid} mapping into our map
nsStringKey key(progidString);
mProgIDs->Put(&key, aClass);
// printf("Populating [ %s, %s ]\n", cidString, progidString);
}
mPrePopulationDone = PR_TRUE;
return NS_OK;
}
#endif /* USE_REGISTRY */
//
// HashProgID
//
nsresult
nsComponentManagerImpl::HashProgID(const char *aProgID, const nsCID &aClass)
{
if(!aProgID)
{
return NS_ERROR_NULL_POINTER;
}
nsStringKey key(aProgID);
nsCID* cid = (nsCID*) mProgIDs->Get(&key);
if (cid)
{
if (cid == &kNoCID)
{
// we don't delete this ptr as it's static (ugh)
}
else
{
delete cid;
}
}
cid = new nsCID(aClass);
if (!cid)
{
return NS_ERROR_OUT_OF_MEMORY;
}
mProgIDs->Put(&key, cid);
return NS_OK;
}
#if 0
nsDll* nsComponentManagerImpl::CreateCachedDllName(const char *dllName)
{
// Check our dllCollection for a dll with matching name
nsStringKey key(dllName);
nsDll *dll = (nsDll *) mDllStore->Get(&key);
if (dll == NULL)
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: New dll \"%s\".", dllName));
// Add a new Dll into the nsDllStore
dll = new nsDll(dllName, 1 /* dummy */);
if (dll == NULL) return NULL;
if (dll->GetStatus() != DLL_OK)
{
// Cant create a nsDll. Backoff.
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: ERROR in creating nsDll from \"%s\".", dllName));
delete dll;
dll = NULL;
}
else
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Adding New dll \"%s\" to mDllStore.",
dllName));
mDllStore->Put(&key, (void *)dll);
}
}
else
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Found in mDllStore \"%s\".", dllName));
}
return dll;
}
nsDll* nsComponentManagerImpl::CreateCachedDll(nsIFileSpec *dllSpec)
{
nsDll *dll = NULL;
PRUint32 modDate;
PRUint32 size;
if (NS_FAILED(dllSpec->GetModDate(&modDate)) ||
NS_FAILED(dllSpec->GetFileSize(&size)))
return NULL;
char *persistentDescriptor = NULL;
if (NS_FAILED(dllSpec->GetPersistentDescriptorString(&persistentDescriptor)))
return NULL;
dll = CreateCachedDll(persistentDescriptor, modDate, size);
nsCRT::free(persistentDescriptor);
return dll;
}
#endif
////////////////////////////////////////////////////////////////////////////////
// nsComponentManagerImpl: Public methods
////////////////////////////////////////////////////////////////////////////////
/**
* LoadFactory()
*
* Given a FactoryEntry, this loads the dll if it has to, find the NSGetFactory
* symbol, calls the routine to create a new factory and returns it to the
* caller.
*
* No attempt is made to store the factory in any form anywhere.
*/
nsresult
nsComponentManagerImpl::LoadFactory(nsFactoryEntry *aEntry,
nsIFactory **aFactory)
{
if (!aFactory)
return NS_ERROR_NULL_POINTER;
*aFactory = NULL;
nsresult rv;
rv = aEntry->GetFactory(aFactory, this);
if (NS_FAILED(rv)) {
PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
("nsComponentManager: failed to load factory from %s (%s)\n",
(const char *)aEntry->location, (const char *)aEntry->type));
return rv;
}
return NS_OK;
}
nsFactoryEntry *
nsComponentManagerImpl::GetFactoryEntry(const nsCID &aClass, PRBool checkRegistry)
{
nsIDKey key(aClass);
nsFactoryEntry *entry = (nsFactoryEntry*) mFactories->Get(&key);
if (entry) {
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("\t\tfound %s as %p in factory cache.",
(const char *)entry->location, entry));
} else {
#ifdef USE_REGISTRY
if (checkRegistry)
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("\t\tnot found in factory cache. Looking in registry"));
nsresult rv = PlatformFind(aClass, &entry);
// If we got one, cache it in our hashtable
if (NS_SUCCEEDED(rv))
{
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("\t\tfound in registry."));
mFactories->Put(&key, entry);
}
}
#endif /* USE_REGISTRY */
}
return (entry);
}
/**
* FindFactory()
*
* Given a classID, this finds the factory for this CID by first searching the
* local CID<->factory mapping. Next it searches for a Dll that implements
* this classID and calls LoadFactory() to create the factory.
*
* Again, no attempt is made at storing the factory.
*/
nsresult
nsComponentManagerImpl::FindFactory(const nsCID &aClass,
nsIFactory **aFactory)
{
if (PR_LOG_TEST(nsComponentManagerLog, PR_LOG_ALWAYS))
{
char *buf = aClass.ToString();
PR_LogPrint("nsComponentManager: FindFactory(%s)", buf);
delete [] buf;
}
PR_ASSERT(aFactory != NULL);
nsFactoryEntry *entry = GetFactoryEntry(aClass, !mPrePopulationDone);
if (!entry)
return NS_ERROR_FACTORY_NOT_REGISTERED;
return entry->GetFactory(aFactory, this);
}
/**
* GetClassObject()
*
* Given a classID, this finds the singleton ClassObject that implements the CID.
* Returns an interface of type aIID off the singleton classobject.
*/
nsresult
nsComponentManagerImpl::GetClassObject(const nsCID &aClass, const nsIID &aIID,
void **aResult)
{
nsresult rv;
nsCOMPtr<nsIFactory> factory;
if (PR_LOG_TEST(nsComponentManagerLog, PR_LOG_ALWAYS))
{
char *buf = aClass.ToString();
PR_LogPrint("nsComponentManager: GetClassObject(%s)", buf);
delete [] buf;
}
PR_ASSERT(aResult != NULL);
rv = FindFactory(aClass, getter_AddRefs(factory));
if (NS_FAILED(rv)) return rv;
rv = factory->QueryInterface(aIID, aResult);
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
("\t\tGetClassObject() %s", NS_SUCCEEDED(rv) ? "succeeded" : "FAILED"));
return rv;
}
/**
* ProgIDToClassID()
*
* Mapping function from a ProgID to a classID. Directly talks to the registry.
*
*/
nsresult
nsComponentManagerImpl::ProgIDToClassID(const char *aProgID, nsCID *aClass)
{
NS_PRECONDITION(aProgID != NULL, "null ptr");
if (! aProgID)
return NS_ERROR_NULL_POINTER;
NS_PRECONDITION(aClass != NULL, "null ptr");
if (! aClass)
return NS_ERROR_NULL_POINTER;
nsresult res = NS_ERROR_FACTORY_NOT_REGISTERED;
#ifdef USE_REGISTRY
// XXX This isn't quite the best way to do this: we should
// probably move an nsArray<ProgID> into the FactoryEntry class,
// and then have the construct/destructor of the factory entry
// keep the ProgID to CID cache up-to-date. However, doing this
// significantly improves performance, so it'll do for now.
nsStringKey key(aProgID);
nsCID* cid = (nsCID*) mProgIDs->Get(&key);
if (cid) {
if (cid == &kNoCID) {
// we've already tried to map this ProgID to a CLSID, and found
// that there _was_ no such mapping in the registry.
}
else {
*aClass = *cid;
res = NS_OK;
}
}
else {
// This is the first time someone has asked for this
// ProgID. Go to the registry to find the CID.
res = PlatformProgIDToCLSID(aProgID, aClass);
if (NS_SUCCEEDED(res)) {
// Found it. So put it into the cache.
cid = new nsCID(*aClass);
if (!cid)
return NS_ERROR_OUT_OF_MEMORY;
mProgIDs->Put(&key, cid);
}
else {
// Didn't find it. Put a special CID in the cache so we
// don't need to hit the registry on subsequent requests
// for the same ProgID.
mProgIDs->Put(&key, (void *)&kNoCID);
}
}
#endif /* USE_REGISTRY */
if (PR_LOG_TEST(nsComponentManagerLog, PR_LOG_ALWAYS)) {
char *buf = 0;
if (NS_SUCCEEDED(res))
buf = aClass->ToString();
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: ProgIDToClassID(%s)->%s", aProgID,
NS_SUCCEEDED(res) ? buf : "[FAILED]"));
if (NS_SUCCEEDED(res))
delete [] buf;
}
return res;
}
/**
* CLSIDToProgID()
*
* Translates a classID to a {ProgID, Class Name}. Does direct registry
* access to do the translation.
*
* XXX Would be nice to hook in a cache here too.
*/
nsresult
nsComponentManagerImpl::CLSIDToProgID(const nsCID &aClass,
char* *aClassName,
char* *aProgID)
{
nsresult res = NS_ERROR_FACTORY_NOT_REGISTERED;
#ifdef USE_REGISTRY
res = PlatformCLSIDToProgID(&aClass, aClassName, aProgID);
#endif /* USE_REGISTRY */
if (PR_LOG_TEST(nsComponentManagerLog, PR_LOG_ALWAYS))
{
char *buf = aClass.ToString();
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
("nsComponentManager: CLSIDToProgID(%s)->%s", buf,
NS_SUCCEEDED(res) ? *aProgID : "[FAILED]"));
delete [] buf;
}
return res;
}
/**
* CreateInstance()
*
* Create an instance of an object that implements an interface and belongs
* to the implementation aClass using the factory. The factory is immediately
* released and not held onto for any longer.
*/
nsresult
nsComponentManagerImpl::CreateInstance(const nsCID &aClass,
nsISupports *aDelegate,
const nsIID &aIID,
void **aResult)
{
if (aResult == NULL)
{
return NS_ERROR_NULL_POINTER;
}
*aResult = NULL;
nsIFactory *factory = NULL;
nsresult res = FindFactory(aClass, &factory);
if (NS_SUCCEEDED(res))
{
res = factory->CreateInstance(aDelegate, aIID, aResult);
NS_RELEASE(factory);
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("\t\tFactory CreateInstance() %s.",
NS_SUCCEEDED(res) ? "succeeded" : "FAILED"));
return res;
}
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("\t\tCreateInstance() FAILED."));
return NS_ERROR_FACTORY_NOT_REGISTERED;
}
/**
* CreateInstanceByProgID()
*
* A variant of CreateInstance() that creates an instance of the object that
* implements the interface aIID and whose implementation has a progID aProgID.
*
* This is only a convenience routine that turns around can calls the
* CreateInstance() with classid and iid.
*/
nsresult
nsComponentManagerImpl::CreateInstanceByProgID(const char *aProgID,
nsISupports *aDelegate,
const nsIID &aIID,
void **aResult)
{
nsCID clsid;
nsresult rv = ProgIDToClassID(aProgID, &clsid);
if (NS_FAILED(rv)) return rv;
return CreateInstance(clsid, aDelegate, aIID, aResult);
}
/*
* I want an efficient way to allocate a buffer to the right size
* and stick the prefix and dllName in, then be able to hand that buffer
* off to the FactoryEntry. Is that so wrong?
*
* *regName is allocated on success.
*
* This should live in nsNativeComponentLoader.cpp, I think.
*/
static nsresult
MakeRegistryName(const char *aDllName, const char *prefix, char **regName)
{
char *registryName;
PRUint32 len = nsCRT::strlen(prefix);
PRUint32 registryNameLen = nsCRT::strlen(aDllName) + len;
registryName = (char *)nsAllocator::Alloc(registryNameLen + 1);
// from here on it, we want len sans terminating NUL
if (!registryName)
return NS_ERROR_OUT_OF_MEMORY;
nsCRT::memcpy(registryName, prefix, len);
strcpy(registryName + len, aDllName); // no nsCRT::strcpy? for shame!
registryName[registryNameLen] = '\0';
*regName = registryName;
#ifdef DEBUG_shaver_off
fprintf(stderr, "MakeRegistryName(%s, %s, &[%s])\n",
aDllName, prefix, *regName);
#endif
return NS_OK;
}
nsresult
nsComponentManagerImpl::RegistryNameForLib(const char *aLibName,
char **aRegistryName)
{
return MakeRegistryName(aLibName, XPCOM_LIB_PREFIX, aRegistryName);
}
nsresult
nsComponentManagerImpl::RegistryLocationForSpec(nsIFileSpec *aSpec,
char **aRegistryName)
{
nsresult rv;
nsFileSpec spec;
if (NS_FAILED(rv = aSpec->GetFileSpec(&spec)))
return rv;
if (spec.IsChildOf(*mComponentsDir)){
/*
* According to sfraser, this sort of string magic is ``Mac-safe''.
* Who knew?
*/
const char *nativePath;
nativePath = spec.GetNativePathCString();
nativePath += mComponentsDirLen;
#ifdef XP_MAC // XXX move relativize-fragment logic to nsFileSpec?
if (nativePath[0] != ':')
nativePath--;
#else
char sep = PR_GetDirectorySeparator();
if (nativePath[0] == sep)
nativePath++;
#endif
rv = MakeRegistryName(nativePath, XPCOM_RELCOMPONENT_PREFIX,
aRegistryName);
} else {
/* absolute names include volume info on Mac, so persistent descriptor */
char *persistentDescriptor;
rv = aSpec->GetPersistentDescriptorString(&persistentDescriptor);
if (NS_FAILED(rv))
return rv;
rv = MakeRegistryName(persistentDescriptor, XPCOM_ABSCOMPONENT_PREFIX,
aRegistryName);
nsAllocator::Free(persistentDescriptor);
}
return rv;
}
nsresult
nsComponentManagerImpl::SpecForRegistryLocation(const char *aLocation,
nsIFileSpec **aSpec)
{
nsresult rv;
if (!aLocation || !aSpec)
return NS_ERROR_NULL_POINTER;
/* abs:/full/path/to/libcomponent.so */
if (!nsCRT::strncmp(aLocation, XPCOM_ABSCOMPONENT_PREFIX, 4)) {
if (NS_FAILED(rv = NS_NewFileSpec(aSpec)))
return rv;
return (*aSpec)->SetPersistentDescriptorString((char *)aLocation + 4);
}
if (!nsCRT::strncmp(aLocation, XPCOM_RELCOMPONENT_PREFIX, 4)) {
nsFileSpec compSpec = (*mComponentsDir);
compSpec += (aLocation + 4);
return NS_NewFileSpecWithSpec(compSpec, aSpec);
}
*aSpec = nsnull;
return NS_ERROR_INVALID_ARG;
}
/**
* RegisterFactory()
*
* Register a factory to be responsible for creation of implementation of
* classID aClass. Plus creates as association of aClassName and aProgID
* to the classID. If replace is PR_TRUE, we replace any existing registrations
* with this one.
*
* Once registration is complete, we add the class to the factories cache
* that we maintain. The factories cache is the ONLY place where these
* registrations are ever kept.
*
* The other RegisterFunctions create a loader mapping and persistent
* location, but we just slam it into the cache here. And we don't call the
* loader's OnRegister function, either.
*/
nsresult
nsComponentManagerImpl::RegisterFactory(const nsCID &aClass,
const char *aClassName,
const char *aProgID,
nsIFactory *aFactory,
PRBool aReplace)
{
nsFactoryEntry *entry = NULL;
nsIDKey key(aClass);
entry = (nsFactoryEntry *)mFactories->Get(&key);
if (entry && !aReplace) {
// Already registered
PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
("\t\tFactory already registered."));
return NS_ERROR_FACTORY_EXISTS;
}
nsFactoryEntry *newEntry = new nsFactoryEntry(aClass, aFactory);
if (newEntry == NULL)
return NS_ERROR_OUT_OF_MEMORY;
if (entry) { // aReplace implied by above check
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
("\t\tdeleting old Factory Entry."));
mFactories->RemoveAndDelete(&key);
entry = NULL;
}
mFactories->Put(&key, newEntry);
// Update the ProgID->CLSID Map
if (aProgID) {
nsresult rv = HashProgID(aProgID, aClass);
if(NS_FAILED(rv)) {
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
("\t\tFactory register succeeded. "
"PROGID(%s)->CLSID mapping failed.", aProgID));
return rv;
}
}
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
("\t\tFactory register succeeded progid=%s.",
aProgID ? aProgID : "<none>"));
return NS_OK;
}
nsresult
nsComponentManagerImpl::RegisterComponent(const nsCID &aClass,
const char *aClassName,
const char *aProgID,
const char *aPersistentDescriptor,
PRBool aReplace,
PRBool aPersist)
{
return RegisterComponentCommon(aClass, aClassName, aProgID,
aPersistentDescriptor, aReplace, aPersist,
nativeComponentType);
}
nsresult
nsComponentManagerImpl::RegisterComponentWithType(const nsCID &aClass,
const char *aClassName,
const char *aProgID,
nsIFileSpec *aSpec,
const char *aLocation,
PRBool aReplace,
PRBool aPersist,
const char *aType)
{
return RegisterComponentCommon(aClass, aClassName, aProgID,
aLocation,
aReplace, aPersist,
aType);
}
/*
* Register a component, using whatever they stuck in the FileSpec.
*/
nsresult
nsComponentManagerImpl::RegisterComponentSpec(const nsCID &aClass,
const char *aClassName,
const char *aProgID,
nsIFileSpec *aLibrarySpec,
PRBool aReplace,
PRBool aPersist)
{
nsXPIDLCString registryName;
nsresult rv = RegistryLocationForSpec(aLibrarySpec, getter_Copies(registryName));
if (NS_FAILED(rv))
return rv;
rv = RegisterComponentWithType(aClass, aClassName, aProgID, aLibrarySpec,
registryName,
aReplace, aPersist,
nativeComponentType);
return rv;
}
/*
* Register a ``library'', which is a DLL location named by a simple filename
* such as ``libnsappshell.so'', rather than a relative or absolute path.
*
* It implies application/x-moz-dll as the component type, and skips the
* FindLoaderForType phase.
*/
nsresult
nsComponentManagerImpl::RegisterComponentLib(const nsCID &aClass,
const char *aClassName,
const char *aProgID,
const char *aDllName,
PRBool aReplace,
PRBool aPersist)
{
nsXPIDLCString registryName;
nsresult rv = RegistryNameForLib(aDllName, getter_Copies(registryName));
if (NS_FAILED(rv))
return rv;
return RegisterComponentCommon(aClass, aClassName, aProgID, registryName,
aReplace, aPersist, nativeComponentType);
}
/*
* Add a component to the known universe of components.
* Once we enter this function, we own aRegistryName, and must free it
* or hand it to nsFactoryEntry. Common exit point ``out'' helps keep us
* sane.
*/
nsresult
nsComponentManagerImpl::RegisterComponentCommon(const nsCID &aClass,
const char *aClassName,
const char *aProgID,
const char *aRegistryName,
PRBool aReplace,
PRBool aPersist,
const char *aType)
{
nsresult rv = NS_OK;
nsFactoryEntry* newEntry = nsnull;
nsIDKey key(aClass);
nsFactoryEntry *entry = GetFactoryEntry(aClass, !mPrePopulationDone);
nsCOMPtr<nsIComponentLoader> loader;
PRBool sanity;
PR_LOG(nsComponentManagerLog, PR_LOG_DEBUG,
("RegisterComponentCommon: %s %s %s %s",
aClassName ? aClassName : "(null)",
aProgID ? aProgID : "(null)",
aType, aRegistryName));
if (entry && !aReplace) {
PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
("\t\tFactory already registered."));
rv = NS_ERROR_FACTORY_EXISTS;
goto out;
}
#ifdef USE_REGISTRY
if (aPersist) {
/* Add to the registry */
rv = AddComponentToRegistry(aClass, aClassName, aProgID,
aRegistryName, aType);
if (NS_FAILED(rv)) {
PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
("\t\tadding %s %s to reg failed", aClassName, aProgID));
goto out;
}
}
#endif
rv = GetLoaderForType(aType, getter_AddRefs(loader));
if (NS_FAILED(rv)) {
PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
("\t\tcouldn't get loader for %s\n", aType));
goto out;
}
newEntry = new nsFactoryEntry(aClass, aRegistryName, aType, loader);
if (!newEntry) {
rv = NS_ERROR_OUT_OF_MEMORY;
goto out;
}
if (entry) { // aReplace implicit from test above
delete entry;
}
/* unless the fabric of the universe bends, we'll get entry back */
sanity = (entry == mFactories->Put(&key, newEntry));
PR_ASSERT(sanity);
/* don't try to clean up, just drop everything and run */
if (!sanity)
return NS_ERROR_FACTORY_NOT_REGISTERED;
/* we've put the new entry in the hash table, so don't delete on error */
newEntry = nsnull;
// Update the ProgID->CLSID Map
if (aProgID
#ifdef USE_REGISTRY
&& !aPersist
#endif
) {
rv = HashProgID(aProgID, aClass);
if (NS_FAILED(rv)) {
char *cidString = aClass.ToString();
PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
("\t\tHashProgID(%s,%s) failed\n", cidString, aProgID));
delete [] cidString;
goto out;
}
}
// Let the loader do magic things now
rv = loader->OnRegister(aClass, aType, aClassName, aProgID, aRegistryName,
aReplace, aPersist);
if (NS_FAILED(rv)) {
PR_LOG(nsComponentManagerLog, PR_LOG_ERROR,
("loader->OnRegister failed for %s \"%s\" %s %s", aType,
aClassName, aProgID, aRegistryName));
goto out;
}
PR_LOG(nsComponentManagerLog,
NS_SUCCEEDED(rv) ? PR_LOG_DEBUG : PR_LOG_ERROR,
("\t\tFactory register %s progID=%s.",
NS_SUCCEEDED(rv) ? "succeeded" : "failed",
aProgID ? aProgID : "<none>"));
out:
if (NS_FAILED(rv)) {
if (newEntry)
delete newEntry;
}
return rv;
}
nsresult
nsComponentManagerImpl::GetLoaderForType(const char *aType,
nsIComponentLoader **aLoader)
{
nsStringKey typeKey(aType);
nsIComponentLoader *loader;
nsresult rv;
loader = (nsIComponentLoader *)mLoaders->Get(&typeKey);
if (loader) {
// nsSupportsHashtable does the AddRef
*aLoader = loader;
return NS_OK;
}
nsRegistryKey loaderKey;
rv = mRegistry->GetSubtreeRaw(mLoadersKey, aType, &loaderKey);
if (NS_FAILED(rv))
return rv;
char *progID;
rv = mRegistry->GetString(loaderKey, progIDValueName, &progID);
if (NS_FAILED(rv))
return rv;
#ifdef DEBUG_shaver_off
fprintf(stderr, "nCMI: constructing loader for type %s = %s\n", aType, progID);
#endif
rv = CreateInstanceByProgID(progID, nsnull, NS_GET_IID(nsIComponentLoader), (void **)&loader);
PR_FREEIF(progID);
if (NS_FAILED(rv))
return rv;
rv = loader->Init(this, mRegistry);
if (NS_SUCCEEDED(rv)) {
mLoaders->Put(&typeKey, loader);
*aLoader = loader;
}
return rv;
}
nsresult
nsComponentManagerImpl::RegisterComponentLoader(const char *aType, const char *aProgID,
PRBool aReplace)
{
nsRegistryKey loaderKey;
nsresult rv = mRegistry->AddSubtreeRaw(mLoadersKey, aType, &loaderKey);
if (NS_FAILED(rv))
return rv;
/* XXX honour aReplace */
rv = mRegistry->SetString(loaderKey, progIDValueName, aProgID);
#ifdef DEBUG_shaver_off
fprintf(stderr, "nNCI: registered %s as component loader for %s\n",
aProgID, aType);
#endif
return rv;
}
nsresult
nsComponentManagerImpl::AddComponentToRegistry(const nsCID &aClass,
const char *aClassName,
const char *aProgID,
const char *aRegistryName,
const char *aType)
{
nsresult rv;
nsRegistryKey IDKey;
PRInt32 nComponents = 0;
/* so why do we use strings here rather than writing bytes, anyway? */
char *cidString = aClass.ToString();
if (!cidString)
return NS_ERROR_OUT_OF_MEMORY;
rv = mRegistry->AddSubtreeRaw(mCLSIDKey, cidString, &IDKey);
if (NS_FAILED(rv))
goto out;
if (aClassName) {
rv = mRegistry->SetString(IDKey, classNameValueName, aClassName);
if (NS_FAILED(rv))
goto out;
}
rv = mRegistry->SetString(IDKey, inprocServerValueName, aRegistryName);
if (NS_FAILED(rv))
goto out;
rv = mRegistry->SetString(IDKey, componentTypeValueName, aType);
if (NS_FAILED(rv))
goto out;
if (aProgID) {
rv = mRegistry->SetString(IDKey, progIDValueName, aProgID);
if (NS_FAILED(rv))
goto out;
nsRegistryKey progIDKey;
rv = mRegistry->AddSubtreeRaw(mClassesKey, aProgID, &progIDKey);
if (NS_FAILED(rv))
goto out;
rv = mRegistry->SetString(progIDKey, classIDValueName, cidString);
if (NS_FAILED(rv))
goto out;
}
nsRegistryKey compKey;
rv = mRegistry->AddSubtreeRaw(mXPCOMKey, aRegistryName, &compKey);
// update component count
rv = mRegistry->GetInt(compKey, componentCountValueName, &nComponents);
nComponents++;
rv = mRegistry->SetInt(compKey, componentCountValueName, nComponents);
if (NS_FAILED(rv))
goto out;
out:
// XXX if failed, undo registry adds or set invalid bit? How?
nsCRT::free(cidString);
return rv;
}
nsresult
nsComponentManagerImpl::UnregisterFactory(const nsCID &aClass,
nsIFactory *aFactory)
{
if (PR_LOG_TEST(nsComponentManagerLog, PR_LOG_ALWAYS))
{
char *buf = aClass.ToString();
PR_LogPrint("nsComponentManager: Unregistering Factory.");
PR_LogPrint("nsComponentManager: + %s.", buf);
delete [] buf;
}
nsIDKey key(aClass);
nsresult res = NS_ERROR_FACTORY_NOT_REGISTERED;
nsFactoryEntry *old = (nsFactoryEntry *) mFactories->Get(&key);
if (old != NULL)
{
if (old->factory.get() == aFactory)
{
PR_EnterMonitor(mMon);
old = (nsFactoryEntry *) mFactories->RemoveAndDelete(&key);
old = NULL;
PR_ExitMonitor(mMon);
res = NS_OK;
}
}
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
("nsComponentManager: ! Factory unregister %s.",
NS_SUCCEEDED(res) ? "succeeded" : "failed"));
return res;
}
nsresult
nsComponentManagerImpl::UnregisterComponent(const nsCID &aClass,
const char *aLibrary)
{
nsresult rv;
if (PR_LOG_TEST(nsComponentManagerLog, PR_LOG_ALWAYS))
{
char *buf = aClass.ToString();
PR_LogPrint("nsComponentManager: UnregisterComponentSpec(%s, %s)", buf,
aLibrary);
delete [] buf;
}
// Convert the persistent descriptor into a nsIFileSpec
nsCOMPtr<nsIFileSpec>libSpec;
rv = CreateInstanceByProgID(NS_FILESPEC_PROGID, NULL,
NS_GET_IID(nsIFileSpec),
getter_AddRefs(libSpec));
if (NS_FAILED(rv)) return rv;
rv = libSpec->SetPersistentDescriptorString((char *)aLibrary);
if (NS_FAILED(rv)) return rv;
return UnregisterComponentSpec(aClass, libSpec);
}
nsresult
nsComponentManagerImpl::UnregisterComponentSpec(const nsCID &aClass,
nsIFileSpec *aLibrarySpec)
{
char *aLibrary;
nsresult rv = aLibrarySpec->GetPersistentDescriptorString(&aLibrary);
if (NS_FAILED(rv))
return NS_ERROR_INVALID_ARG;
if (PR_LOG_TEST(nsComponentManagerLog, PR_LOG_ALWAYS))
{
char *buf = aClass.ToString();
PR_LogPrint("nsComponentManager: UnregisterComponentSpec(%s, %s)", buf,
aLibrary);
delete [] buf;
}
nsIDKey key(aClass);
nsFactoryEntry *old = (nsFactoryEntry *) mFactories->Get(&key);
nsresult res = NS_ERROR_FACTORY_NOT_REGISTERED;
PR_EnterMonitor(mMon);
if (old != NULL)
{
#if 0 /* use nsFactoryEntry->location */
if (old->dll->GetPersistentDescriptorString() != NULL &&
#if defined(XP_UNIX) || defined(XP_BEOS)
PL_strcasecmp(old->dll->GetPersistentDescriptorString(), aLibrary)
#else
PL_strcmp(old->dll->GetPersistentDescriptorString(), aLibrary)
#endif
)
{
mFactories->RemoveAndDelete(&key);
old = NULL;
res = NS_OK;
}
#ifdef USE_REGISTRY
char *cidString = aClass.ToString();
res = PlatformUnregister(cidString, aLibrary);
delete [] cidString;
#endif
#endif
}
PR_ExitMonitor(mMon);
PR_LOG(nsComponentManagerLog, PR_LOG_WARNING,
("nsComponentManager: ! Factory unregister %s.",
NS_SUCCEEDED(res) ? "succeeded" : "failed"));
return res;
}
struct CanUnload_closure {
int when;
nsresult status; // this is a hack around Enumerate's void return
nsIComponentLoader *native;
};
static PRBool
CanUnload_enumerate(nsHashKey *key, void *aData, void *aClosure)
{
nsIComponentLoader *loader = (nsIComponentLoader *)aData;
struct CanUnload_closure *closure =
(struct CanUnload_closure *)aClosure;
if (loader == closure->native) {
#ifdef DEBUG
fprintf(stderr, "CanUnload_enumerate: skipping native\n");
#endif
return PR_TRUE;
}
closure->status = loader->UnloadAll(closure->when);
if (NS_FAILED(closure->status))
return PR_FALSE;
return PR_TRUE;
}
// XXX Need to pass in aWhen and servicemanager
nsresult
nsComponentManagerImpl::FreeLibraries(void)
{
nsIServiceManager* serviceMgr = NULL;
nsresult rv = nsServiceManager::GetGlobalServiceManager(&serviceMgr);
if (NS_FAILED(rv)) return rv;
rv = UnloadLibraries(serviceMgr, NS_Timer); // XXX when
return rv;
}
// Private implementation of unloading libraries
nsresult
nsComponentManagerImpl::UnloadLibraries(nsIServiceManager *serviceMgr, PRInt32 aWhen)
{
nsresult rv = NS_OK;
PR_EnterMonitor(mMon);
PR_LOG(nsComponentManagerLog, PR_LOG_ALWAYS,
("nsComponentManager: Unloading Libraries."));
// UnloadAll the loaders
/* iterate over all known loaders and ask them to autoregister. */
struct CanUnload_closure closure;
closure.when = aWhen;
closure.status = NS_OK;
closure.native = mNativeComponentLoader;
mLoaders->Enumerate(CanUnload_enumerate, &closure);
// UnloadAll the native loader
rv = mNativeComponentLoader->UnloadAll(aWhen);
PR_ExitMonitor(mMon);
return rv;
}
////////////////////////////////////////////////////////////////////////////////
/**
* AutoRegister(RegistrationInstant, const char *directory)
*
* Given a directory in the following format, this will ensure proper registration
* of all components. No default director is looked at.
*
* Directory and fullname are what NSPR will accept. For eg.
* WIN y:/home/dp/mozilla/dist/bin
* UNIX /home/dp/mozilla/dist/bin
* MAC /Hard drive/mozilla/dist/apprunner
*
* This will take care not loading already registered dlls, finding and
* registering new dlls, re-registration of modified dlls
*
*/
struct AutoReg_closure {
int when;
nsIFileSpec *spec;
nsresult status; // this is a hack around Enumerate's void return
nsIComponentLoader *native;
PRBool registered;
};
static PRBool
AutoRegister_enumerate(nsHashKey *key, void *aData, void *aClosure)
{
nsIComponentLoader *loader = NS_STATIC_CAST(nsIComponentLoader *, aData);
struct AutoReg_closure *closure =
(struct AutoReg_closure *)aClosure;
if (loader == closure->native)
return PR_TRUE;
PR_ASSERT(NS_SUCCEEDED(closure->status));
closure->status = loader->AutoRegisterComponents(closure->when,
closure->spec);
return NS_SUCCEEDED(closure->status) ? PR_TRUE : PR_FALSE;
}
static PRBool
RegisterDeferred_enumerate(nsHashKey *key, void *aData, void *aClosure)
{
nsIComponentLoader *loader = NS_STATIC_CAST(nsIComponentLoader *, aData);
struct AutoReg_closure *closure =
(struct AutoReg_closure *)aClosure;
PR_ASSERT(NS_SUCCEEDED(closure->status));
PRBool registered;
closure->status = loader->RegisterDeferredComponents(closure->when,
&registered);
closure->registered |= registered;
return NS_SUCCEEDED(closure->status) ? PR_TRUE : PR_FALSE;
}
nsresult
nsComponentManagerImpl::AutoRegister(PRInt32 when, nsIFileSpec *inDirSpec)
{
nsCOMPtr<nsIFileSpec> dir;
nsresult rv;
if (inDirSpec) {
dir = inDirSpec;
} else {
// Do default components directory
nsSpecialSystemDirectory sysdir(nsSpecialSystemDirectory::XPCOM_CurrentProcessComponentDirectory);
rv = NS_NewFileSpecWithSpec(sysdir, getter_AddRefs(dir));
if (NS_FAILED(rv))
return rv; // XXX translate error code?
}
/* do the native loader first, so we can find other loaders */
rv = mNativeComponentLoader->AutoRegisterComponents((PRInt32)when, dir);
if (NS_FAILED(rv))
return rv;
/* XXX eagerly instantiate all known loaders */
nsCOMPtr<nsIEnumerator> loaderEnum;
rv = mRegistry->EnumerateSubtrees(mLoadersKey, getter_AddRefs(loaderEnum));
if (NS_FAILED(rv))
return rv;
rv = loaderEnum->First();
if (NS_FAILED(rv))
return rv;
for (; NS_SUCCEEDED(rv) && (loaderEnum->IsDone() != NS_OK);
(rv = loaderEnum->Next())) {
nsCOMPtr<nsISupports> base;
rv = loaderEnum->CurrentItem(getter_AddRefs(base));
if (NS_FAILED(rv))
return rv;
// Narrow
nsCOMPtr<nsIRegistryNode> node;
node = do_QueryInterface(base, &rv);
if (NS_FAILED(rv))
continue;
nsXPIDLCString type;
rv = node->GetName(getter_Copies(type));
if (NS_FAILED(rv))
continue;
nsStringKey typeKey(type);
nsCOMPtr<nsIComponentLoader> loader;
/* this will create it if we haven't already */
GetLoaderForType(type, getter_AddRefs(loader));
continue;
}
/* iterate over all known loaders and ask them to autoregister. */
struct AutoReg_closure closure;
/* XXX convert when to nsIComponentLoader::(when) properly */
closure.when = when;
closure.spec = dir.get();
closure.status = NS_OK;
closure.native = mNativeComponentLoader; // prevent duplicate autoreg
mLoaders->Enumerate(AutoRegister_enumerate, &closure);
if (NS_FAILED(closure.status))
return closure.status;
do {
closure.registered = PR_FALSE;
mLoaders->Enumerate(RegisterDeferred_enumerate, &closure);
} while (NS_SUCCEEDED(closure.status) && closure.registered);
return closure.status;
}
static PRBool
AutoRegisterComponent_enumerate(nsHashKey *key, void *aData, void *aClosure)
{
PRBool didRegister;
nsIComponentLoader *loader = (nsIComponentLoader *)aData;
struct AutoReg_closure *closure =
(struct AutoReg_closure *)aClosure;
closure->status = loader->AutoRegisterComponent(closure->when,
closure->spec,
&didRegister);
if (NS_SUCCEEDED(closure->status) && didRegister)
return PR_FALSE;
if (didRegister)
return PR_TRUE;
return PR_FALSE;
}
nsresult
nsComponentManagerImpl::AutoRegisterComponent(PRInt32 when,
nsIFileSpec *component)
{
struct AutoReg_closure closure;
/* XXX convert when to nsIComponentLoader::(when) properly */
closure.when = (PRInt32)when;
closure.spec = component;
closure.status = NS_OK;
/*
* Do we have to give the native loader first crack at it?
* I vote ``no''.
*/
mLoaders->Enumerate(AutoRegisterComponent_enumerate, &closure);
return NS_FAILED(closure.status)
? NS_ERROR_FACTORY_NOT_REGISTERED : NS_OK;
}
nsresult
nsComponentManagerImpl::IsRegistered(const nsCID &aClass,
PRBool *aRegistered)
{
if(!aRegistered)
{
NS_ASSERTION(0, "null ptr");
return NS_ERROR_NULL_POINTER;
}
*aRegistered = (nsnull != GetFactoryEntry(aClass, !mPrePopulationDone));
return NS_OK;
}
static NS_IMETHODIMP
ConvertFactoryEntryToCID(nsHashKey *key, void *data, void *convert_data,
nsISupports **retval)
{
nsComponentManagerImpl *compMgr = (nsComponentManagerImpl*) convert_data;
nsresult rv;
nsISupportsID* cidHolder;
if(NS_SUCCEEDED(rv =
compMgr->CreateInstanceByProgID(NS_SUPPORTS_ID_PROGID,
nsnull,
NS_GET_IID(nsISupportsID),
(void **)&cidHolder)))
{
nsFactoryEntry *fe = (nsFactoryEntry *) data;
cidHolder->SetData(&fe->cid);
*retval = cidHolder;
}
else
*retval = nsnull;
return rv;
}
static NS_IMETHODIMP
ConvertProgIDKeyToString(nsHashKey *key, void *data, void *convert_data,
nsISupports **retval)
{
nsComponentManagerImpl *compMgr = (nsComponentManagerImpl*) convert_data;
nsresult rv;
nsISupportsString* strHolder;
rv = compMgr->CreateInstanceByProgID(NS_SUPPORTS_STRING_PROGID, nsnull,
NS_GET_IID(nsISupportsString),
(void **)&strHolder);
if(NS_SUCCEEDED(rv))
{
nsStringKey *strKey = (nsStringKey *) key;
const nsString& str = strKey->GetString();
char* yetAnotherCopyOfTheString = str.ToNewCString();
if(yetAnotherCopyOfTheString)
{
strHolder->SetData(yetAnotherCopyOfTheString);
delete [] yetAnotherCopyOfTheString;
}
*retval = strHolder;
}
else
*retval = nsnull;
return rv;
}
nsresult
nsComponentManagerImpl::EnumerateCLSIDs(nsIEnumerator** aEmumerator)
{
if(!aEmumerator)
{
NS_ASSERTION(0, "null ptr");
return NS_ERROR_NULL_POINTER;
}
*aEmumerator = nsnull;
nsresult rv;
if(!mPrePopulationDone)
{
rv = PlatformPrePopulateRegistry();
if(NS_FAILED(rv))
return rv;
}
return NS_NewHashtableEnumerator(mFactories, ConvertFactoryEntryToCID,
this, aEmumerator);
}
nsresult
nsComponentManagerImpl::EnumerateProgIDs(nsIEnumerator** aEmumerator)
{
if(!aEmumerator)
{
NS_ASSERTION(0, "null ptr");
return NS_ERROR_NULL_POINTER;
}
*aEmumerator = nsnull;
nsresult rv;
if(!mPrePopulationDone)
{
rv = PlatformPrePopulateRegistry();
if(NS_FAILED(rv))
return rv;
}
return NS_NewHashtableEnumerator(mProgIDs, ConvertProgIDKeyToString,
this, aEmumerator);
}
nsresult
nsComponentManagerImpl::GetInterface(const nsIID & uuid, void **result)
{
nsresult rv = NS_OK;
if (uuid.Equals(NS_GET_IID(nsIServiceManager)))
{
// Return the global service manager
rv = nsServiceManager::GetGlobalServiceManager((nsIServiceManager **)result);
}
else
{
// fall through to QI as anything QIable is a superset of what canbe
// got via the GetInterface()
rv = QueryInterface(uuid, result);
}
return rv;
}
////////////////////////////////////////////////////////////////////////////////
NS_COM nsresult
NS_GetGlobalComponentManager(nsIComponentManager* *result)
{
nsresult rv = NS_OK;
if (nsComponentManagerImpl::gComponentManager == NULL)
{
// XPCOM needs initialization.
rv = NS_InitXPCOM(NULL, NULL);
}
if (NS_SUCCEEDED(rv))
{
// NO ADDREF since this is never intended to be released.
*result = nsComponentManagerImpl::gComponentManager;
}
return rv;
}
////////////////////////////////////////////////////////////////////////////////
Ссылка в новой задаче Показать git blame Копировать постоянную ссылку