gecko-dev/netwerk/build/nsNetModule.cpp
kipp%netscape.com 8945b95dcc new
1999-09-30 01:53:31 +00:00

361 lines
12 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsCOMPtr.h"
#include "nsIModule.h"
#include "nsIGenericFactory.h"
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsIOService.h"
#include "nsNetModuleMgr.h"
#include "nsFileTransportService.h"
#include "nsSocketTransportService.h"
#include "nsSocketProviderService.h"
#include "nscore.h"
#include "nsStdURL.h"
#include "nsSimpleURI.h"
#include "nsDnsService.h"
#include "nsLoadGroup.h"
#include "nsInputStreamChannel.h"
static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
static NS_DEFINE_CID(kIOServiceCID, NS_IOSERVICE_CID);
static NS_DEFINE_CID(kFileTransportServiceCID, NS_FILETRANSPORTSERVICE_CID);
static NS_DEFINE_CID(kStandardURLCID, NS_STANDARDURL_CID);
static NS_DEFINE_CID(kSimpleURICID, NS_SIMPLEURI_CID);
static NS_DEFINE_CID(kSocketTransportServiceCID, NS_SOCKETTRANSPORTSERVICE_CID);
static NS_DEFINE_CID(kSocketProviderServiceCID, NS_SOCKETPROVIDERSERVICE_CID);
static NS_DEFINE_CID(kExternalModuleManagerCID, NS_NETMODULEMGR_CID);
static NS_DEFINE_CID(kDNSServiceCID, NS_DNSSERVICE_CID);
static NS_DEFINE_CID(kLoadGroupCID, NS_LOADGROUP_CID);
static NS_DEFINE_CID(kInputStreamChannelCID, NS_INPUTSTREAMCHANNEL_CID);
///////////////////////////////////////////////////////////////////////////////
// Module implementation for the net library
class nsNetModule : public nsIModule
{
public:
nsNetModule();
virtual ~nsNetModule();
NS_DECL_ISUPPORTS
NS_DECL_NSIMODULE
protected:
nsresult Initialize();
void Shutdown();
PRBool mInitialized;
nsCOMPtr<nsIGenericFactory> mIOServiceFactory;
nsCOMPtr<nsIGenericFactory> mFileTransportServiceFactory;
nsCOMPtr<nsIGenericFactory> mSocketTransportServiceFactory;
nsCOMPtr<nsIGenericFactory> mSocketProviderServiceFactory;
nsCOMPtr<nsIGenericFactory> mDNSServiceFactory;
nsCOMPtr<nsIGenericFactory> mStandardURLFactory;
nsCOMPtr<nsIGenericFactory> mSimpleURIFactory;
nsCOMPtr<nsIGenericFactory> mExternalModuleManagerFactory;
nsCOMPtr<nsIGenericFactory> mLoadGroupFactory;
nsCOMPtr<nsIGenericFactory> mInputStreamChannelFactory;
};
static NS_DEFINE_IID(kIModuleIID, NS_IMODULE_IID);
nsNetModule::nsNetModule()
: mInitialized(PR_FALSE)
{
NS_INIT_ISUPPORTS();
}
nsNetModule::~nsNetModule()
{
Shutdown();
}
NS_IMPL_ISUPPORTS(nsNetModule, kIModuleIID)
// Perform our one-time intialization for this module
nsresult
nsNetModule::Initialize()
{
if (mInitialized) {
return NS_OK;
}
mInitialized = PR_TRUE;
return NS_OK;
}
// Shutdown this module, releasing all of the module resources
void
nsNetModule::Shutdown()
{
// Release the factory objects
mIOServiceFactory = nsnull;
mFileTransportServiceFactory = nsnull;
mSocketTransportServiceFactory = nsnull;
mSocketProviderServiceFactory = nsnull;
mDNSServiceFactory = nsnull;
mStandardURLFactory = nsnull;
mSimpleURIFactory = nsnull;
mExternalModuleManagerFactory = nsnull;
mLoadGroupFactory = nsnull;
mInputStreamChannelFactory = nsnull;
}
// Create a factory object for creating instances of aClass.
NS_IMETHODIMP
nsNetModule::GetClassObject(nsIComponentManager *aCompMgr,
const nsCID& aClass,
const nsIID& aIID,
void** r_classObj)
{
nsresult rv;
// Defensive programming: Initialize *r_classObj in case of error below
if (!r_classObj) {
return NS_ERROR_INVALID_POINTER;
}
*r_classObj = NULL;
// Do one-time-only initialization if necessary
if (!mInitialized) {
rv = Initialize();
if (NS_FAILED(rv)) {
// Initialization failed! yikes!
return rv;
}
}
// Choose the appropriate factory, based on the desired instance
// class type (aClass).
nsCOMPtr<nsIGenericFactory> fact;
if (aClass.Equals(kIOServiceCID)) {
if (!mIOServiceFactory) {
rv = NS_NewGenericFactory(getter_AddRefs(mIOServiceFactory),
nsIOService::Create);
}
fact = mIOServiceFactory;
}
else if (aClass.Equals(kFileTransportServiceCID)) {
if (!mFileTransportServiceFactory) {
rv = NS_NewGenericFactory(getter_AddRefs(mFileTransportServiceFactory),
nsFileTransportService::Create);
}
fact = mFileTransportServiceFactory;
}
else if (aClass.Equals(kSocketTransportServiceCID)) {
if (!mSocketTransportServiceFactory) {
rv = NS_NewGenericFactory(getter_AddRefs(mSocketTransportServiceFactory),
nsSocketTransportService::Create);
}
fact = mSocketTransportServiceFactory;
}
else if (aClass.Equals(kSocketProviderServiceCID)) {
if (!mSocketProviderServiceFactory) {
rv = NS_NewGenericFactory(getter_AddRefs(mSocketProviderServiceFactory),
nsSocketProviderService::Create);
}
fact = mSocketProviderServiceFactory;
}
else if (aClass.Equals(kDNSServiceCID)) {
if (!mDNSServiceFactory) {
rv = NS_NewGenericFactory(getter_AddRefs(mDNSServiceFactory),
nsDNSService::Create);
}
fact = mDNSServiceFactory;
}
else if (aClass.Equals(kStandardURLCID)) {
if (!mStandardURLFactory) {
rv = NS_NewGenericFactory(getter_AddRefs(mStandardURLFactory),
nsStdURL::Create);
}
fact = mStandardURLFactory;
}
else if (aClass.Equals(kSimpleURICID)) {
if (!mSimpleURIFactory) {
rv = NS_NewGenericFactory(getter_AddRefs(mSimpleURIFactory),
nsSimpleURI::Create);
}
fact = mSimpleURIFactory;
}
else if (aClass.Equals(kExternalModuleManagerCID)) {
if (!mExternalModuleManagerFactory) {
rv = NS_NewGenericFactory(getter_AddRefs(mExternalModuleManagerFactory),
nsNetModuleMgr::Create);
}
fact = mExternalModuleManagerFactory;
}
// XXX not registered!
#if 1
else if (aClass.Equals(kLoadGroupCID)) {
if (!mLoadGroupFactory) {
rv = NS_NewGenericFactory(getter_AddRefs(mLoadGroupFactory),
nsLoadGroup::Create);
}
fact = mLoadGroupFactory;
}
#endif
else if (aClass.Equals(kInputStreamChannelCID)) {
if (!mInputStreamChannelFactory) {
rv = NS_NewGenericFactory(getter_AddRefs(mInputStreamChannelFactory),
nsInputStreamChannel::Create);
}
fact = mInputStreamChannelFactory;
}
else {
rv = NS_ERROR_FACTORY_NOT_REGISTERED;
#ifdef DEBUG
char* cs = aClass.ToString();
printf("+++ nsNetModule: unable to create factory for %s\n", cs);
nsCRT::free(cs);
#endif
}
if (fact) {
rv = fact->QueryInterface(aIID, r_classObj);
}
return rv;
}
//----------------------------------------
struct Components {
const char* mDescription;
const nsID* mCID;
const char* mProgID;
};
// The list of components we register
static Components gComponents[] = {
{ "Network Service", &kIOServiceCID,
"component://netscape/network/net-service", },
{ "File Transport Service", &kFileTransportServiceCID,
"component://netscape/network/file-transport-service", },
{ "Socket Transport Service", &kSocketTransportServiceCID,
"component://netscape/network/socket-transport-service", },
{ "Socket Provider Service", &kSocketProviderServiceCID,
"component://netscape/network/socket-provider-service", },
{ "DNS Service", &kDNSServiceCID,
"component://netscape/network/dns-service", },
{ "Standard URL Implementation", &kStandardURLCID,
"component://netscape/network/standard-url", },
{ "Simple URI Implementation", &kSimpleURICID,
"component://netscape/network/simple-uri", },
{ "External Module Manager", &kExternalModuleManagerCID,
"component://netscape/network/net-extern-mod", },
{ "Input Stream Channel", &kInputStreamChannelCID,
"component://netscape/network/input-stream-channel", },
};
#define NUM_COMPONENTS (sizeof(gComponents) / sizeof(gComponents[0]))
NS_IMETHODIMP
nsNetModule::RegisterSelf(nsIComponentManager *aCompMgr,
nsIFileSpec* aPath,
const char* registryLocation,
const char* componentType)
{
nsresult rv = NS_OK;
#ifdef DEBUG
printf("*** Registering net components\n");
#endif
Components* cp = gComponents;
Components* end = cp + NUM_COMPONENTS;
while (cp < end) {
rv = aCompMgr->RegisterComponentSpec(*cp->mCID, cp->mDescription,
cp->mProgID, aPath, PR_TRUE,
PR_TRUE);
if (NS_FAILED(rv)) {
#ifdef DEBUG
printf("nsNetModule: unable to register %s component => %x\n",
cp->mDescription, rv);
#endif
break;
}
cp++;
}
return rv;
}
NS_IMETHODIMP
nsNetModule::UnregisterSelf(nsIComponentManager* aCompMgr,
nsIFileSpec* aPath,
const char* registryLocation)
{
#ifdef DEBUG
printf("*** Unregistering net components\n");
#endif
Components* cp = gComponents;
Components* end = cp + NUM_COMPONENTS;
while (cp < end) {
nsresult rv = aCompMgr->UnregisterComponentSpec(*cp->mCID, aPath);
if (NS_FAILED(rv)) {
#ifdef DEBUG
printf("nsNetModule: unable to unregister %s component => %x\n",
cp->mDescription, rv);
#endif
}
cp++;
}
return NS_OK;
}
NS_IMETHODIMP
nsNetModule::CanUnload(nsIComponentManager *aCompMgr, PRBool *okToUnload)
{
if (!okToUnload) {
return NS_ERROR_INVALID_POINTER;
}
*okToUnload = PR_FALSE;
return NS_ERROR_FAILURE;
}
//----------------------------------------------------------------------
static nsNetModule *gModule = NULL;
extern "C" NS_EXPORT nsresult NSGetModule(nsIComponentManager *servMgr,
nsIFileSpec* location,
nsIModule** return_cobj)
{
nsresult rv = NS_OK;
NS_ASSERTION(return_cobj, "Null argument");
NS_ASSERTION(gModule == NULL, "nsNetModule: Module already created.");
// Create and initialize the module instance
nsNetModule *m = new nsNetModule();
if (!m) {
return NS_ERROR_OUT_OF_MEMORY;
}
// Increase refcnt and store away nsIModule interface to m in return_cobj
rv = m->QueryInterface(NS_GET_IID(nsIModule), (void**)return_cobj);
if (NS_FAILED(rv)) {
delete m;
m = nsnull;
}
gModule = m; // WARNING: Weak Reference
return rv;
}