gecko-dev/modules/libjar/nsJARChannel.cpp
valeski%netscape.com 2988398b46 nsJARProtocol.cpp
1999-12-07 06:58:55 +00:00

622 lines
16 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 "nsNetUtil.h"
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsIFileSpec.h"
#include "nsSpecialSystemDirectory.h"
#include "nsJARChannel.h"
#include "nsCRT.h"
#include "nsIFileTransportService.h"
#include "nsIURL.h"
#include "nsIMIMEService.h"
static NS_DEFINE_CID(kFileTransportServiceCID, NS_FILETRANSPORTSERVICE_CID);
static NS_DEFINE_CID(kMIMEServiceCID, NS_MIMESERVICE_CID);
static NS_DEFINE_CID(kZipReaderCID, NS_ZIPREADER_CID);
static NS_DEFINE_CID(kIOServiceCID, NS_IOSERVICE_CID);
////////////////////////////////////////////////////////////////////////////////
class nsJARDownloadObserver : public nsIStreamObserver
{
public:
NS_DECL_ISUPPORTS
NS_IMETHOD OnStartRequest(nsIChannel* jarCacheTransport,
nsISupports* context) {
return NS_OK;
}
NS_IMETHOD OnStopRequest(nsIChannel* jarCacheTransport,
nsISupports* context,
nsresult status,
const PRUnichar* aMsg) {
nsresult rv = NS_OK;
if (NS_SUCCEEDED(status)) {
// after successfully downloading the jar file to the cache,
// start the extraction process:
NS_WITH_SERVICE(nsIIOService, serv, kIOServiceCID, &rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIFileChannel> jarCacheFile;
rv = serv->NewChannelFromNativePath(mJarCacheFile.GetNativePathCString(),
mJARChannel->mLoadGroup,
mJARChannel->mCallbacks,
mJARChannel->mLoadAttributes,
nsnull,
mJARChannel->mBufferSegmentSize,
mJARChannel->mBufferMaxSize,
getter_AddRefs(jarCacheFile));
if (NS_FAILED(rv)) return rv;
rv = mJARChannel->ExtractJARElement(jarCacheFile);
}
return rv;
}
nsJARDownloadObserver(nsFileSpec& jarCacheFile, nsJARChannel* jarChannel) {
NS_INIT_REFCNT();
mJarCacheFile = jarCacheFile;
mJARChannel = jarChannel;
NS_ADDREF(mJARChannel);
}
virtual ~nsJARDownloadObserver() {
NS_RELEASE(mJARChannel);
}
protected:
nsFileSpec mJarCacheFile;
nsJARChannel* mJARChannel;
};
NS_IMPL_ISUPPORTS1(nsJARDownloadObserver, nsIStreamObserver)
////////////////////////////////////////////////////////////////////////////////
nsJARChannel::nsJARChannel()
: mCommand(nsnull),
mContentType(nsnull),
mJAREntry(nsnull)
{
NS_INIT_REFCNT();
}
nsJARChannel::~nsJARChannel()
{
if (mCommand)
nsCRT::free(mCommand);
if (mContentType)
nsCRT::free(mContentType);
if (mJAREntry)
nsCRT::free(mJAREntry);
}
NS_IMPL_ISUPPORTS6(nsJARChannel,
nsIJARChannel,
nsIChannel,
nsIRequest,
nsIStreamObserver,
nsIStreamListener,
nsIFileSystem)
NS_METHOD
nsJARChannel::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
{
nsresult rv;
if (aOuter)
return NS_ERROR_NO_AGGREGATION;
nsJARChannel* jarChannel = new nsJARChannel();
if (jarChannel == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(jarChannel);
rv = jarChannel->QueryInterface(aIID, aResult);
NS_RELEASE(jarChannel);
return rv;
}
nsresult
nsJARChannel::Init(nsIJARProtocolHandler* aHandler,
const char* command,
nsIURI* uri,
nsILoadGroup* aLoadGroup,
nsIInterfaceRequestor* notificationCallbacks,
nsLoadFlags loadAttributes,
nsIURI* originalURI,
PRUint32 bufferSegmentSize,
PRUint32 bufferMaxSize)
{
nsresult rv;
mURI = do_QueryInterface(uri, &rv);
if (NS_FAILED(rv)) return rv;
mCommand = nsCRT::strdup(command);
if (mCommand == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
mOriginalURI = originalURI;
mBufferSegmentSize = bufferSegmentSize;
mBufferMaxSize = bufferMaxSize;
rv = SetLoadAttributes(loadAttributes);
if (NS_FAILED(rv)) return rv;
rv = SetLoadGroup(aLoadGroup);
if (NS_FAILED(rv)) return rv;
rv = SetNotificationCallbacks(notificationCallbacks);
if (NS_FAILED(rv)) return rv;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// nsIRequest methods
NS_IMETHODIMP
nsJARChannel::IsPending(PRBool* result)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARChannel::Cancel()
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARChannel::Suspend()
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARChannel::Resume()
{
return NS_ERROR_NOT_IMPLEMENTED;
}
////////////////////////////////////////////////////////////////////////////////
// nsIChannel methods
NS_IMETHODIMP
nsJARChannel::GetOriginalURI(nsIURI* *aOriginalURI)
{
*aOriginalURI = mOriginalURI;
NS_ADDREF(*aOriginalURI);
return NS_OK;
}
NS_IMETHODIMP
nsJARChannel::GetURI(nsIURI* *aURI)
{
*aURI = mURI;
NS_ADDREF(*aURI);
return NS_OK;
}
NS_IMETHODIMP
nsJARChannel::OpenInputStream(PRUint32 startPosition, PRInt32 readCount,
nsIInputStream* *result)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARChannel::OpenOutputStream(PRUint32 startPosition, nsIOutputStream* *result)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARChannel::AsyncOpen(nsIStreamObserver* observer, nsISupports* ctxt)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARChannel::AsyncRead(PRUint32 startPosition, PRInt32 readCount,
nsISupports* ctxt,
nsIStreamListener* listener)
{
nsresult rv;
rv = mURI->GetJARFile(getter_AddRefs(mJARBaseURI));
if (NS_FAILED(rv)) return rv;
rv = mURI->GetJAREntry(&mJAREntry);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIChannel> jarBaseChannel;
rv = NS_OpenURI(getter_AddRefs(jarBaseChannel),
mJARBaseURI, mLoadGroup, mCallbacks, mLoadAttributes);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIFileChannel> jarBaseFile = do_QueryInterface(jarBaseChannel, &rv);
// XXX need to set a state variable here to say we're reading
mStartPosition = startPosition;
mReadCount = readCount;
mUserContext = ctxt;
mUserListener = listener;
if (NS_SUCCEEDED(rv)) {
// then we've already got a local jar file -- no need to download it
rv = ExtractJARElement(jarBaseFile);
}
else {
// otherwise, we need to download the jar file
nsFileSpec jarCacheFile;
rv = GetCacheFile(jarCacheFile);
if (NS_FAILED(rv)) return rv;
NS_WITH_SERVICE(nsIFileTransportService, fts, kFileTransportServiceCID, &rv);
if (NS_FAILED(rv)) return rv;
// use a file transport to serve as a data pump for the download (done
// on some other thread)
nsCOMPtr<nsIChannel> jarCacheTransport;
rv = fts->CreateTransport(jarCacheFile, mCommand,
mBufferSegmentSize, mBufferMaxSize,
getter_AddRefs(jarCacheTransport));
if (NS_FAILED(rv)) return rv;
rv = jarCacheTransport->SetNotificationCallbacks(mCallbacks);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIStreamObserver> downloadObserver = new nsJARDownloadObserver(jarCacheFile, this);
if (downloadObserver == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
nsCOMPtr<nsIInputStream> jarBaseIn;
rv = jarBaseChannel->OpenInputStream(0, -1, getter_AddRefs(jarBaseIn));
if (NS_FAILED(rv)) return rv;
rv = jarCacheTransport->AsyncWrite(jarBaseIn, 0, -1, nsnull, downloadObserver);
}
return rv;
}
nsresult
nsJARChannel::GetCacheFile(nsFileSpec& cacheFile)
{
// XXX change later to use the real network cache
nsresult rv;
nsSpecialSystemDirectory jarCacheFile(nsSpecialSystemDirectory::OS_CurrentProcessDirectory);
jarCacheFile += "jarCache";
if (!jarCacheFile.Exists())
jarCacheFile.CreateDirectory();
nsCOMPtr<nsIURL> jarBaseURL = do_QueryInterface(mJARBaseURI, &rv);
if (NS_FAILED(rv)) return rv;
char* jarFileName;
rv = jarBaseURL->GetFileName(&jarFileName);
if (NS_FAILED(rv)) return rv;
jarCacheFile += jarFileName;
nsCRT::free(jarFileName);
cacheFile = jarCacheFile;
return rv;
}
nsresult
nsJARChannel::ExtractJARElement(nsIFileChannel* jarBaseFile)
{
nsresult rv;
mJARBaseFile = jarBaseFile;
NS_WITH_SERVICE(nsIFileTransportService, fts, kFileTransportServiceCID, &rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIChannel> jarTransport;
rv = fts->CreateTransportFromFileSystem(this, mCommand,
mBufferSegmentSize, mBufferMaxSize,
getter_AddRefs(jarTransport));
if (NS_FAILED(rv)) return rv;
rv = jarTransport->SetNotificationCallbacks(mCallbacks);
if (NS_FAILED(rv)) return rv;
rv = jarTransport->AsyncRead(mStartPosition, mReadCount, nsnull, this);
return rv;
}
NS_IMETHODIMP
nsJARChannel::AsyncWrite(nsIInputStream* fromStream, PRUint32 startPosition,
PRInt32 writeCount,
nsISupports* ctxt,
nsIStreamObserver* observer)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARChannel::GetLoadAttributes(PRUint32* aLoadFlags)
{
*aLoadFlags = mLoadAttributes;
return NS_OK;
}
NS_IMETHODIMP
nsJARChannel::SetLoadAttributes(PRUint32 aLoadFlags)
{
mLoadAttributes = aLoadFlags;
return NS_OK;
}
NS_IMETHODIMP
nsJARChannel::GetContentType(char* *aContentType)
{
nsresult rv = NS_OK;
if (mContentType == nsnull) {
char* fileName = new char[PL_strlen(mJAREntry)+1];
PL_strcpy(fileName, mJAREntry);
//char* fileName = <get the relative part of the jar URL's file name>;
if (fileName != nsnull) {
PRInt32 len = nsCRT::strlen(fileName);
const char* ext = nsnull;
for (PRInt32 i = len; i >= 0; i--) {
if (fileName[i] == '.') {
ext = &fileName[i + 1];
break;
}
}
if (ext) {
NS_WITH_SERVICE(nsIMIMEService, mimeServ, kMIMEServiceCID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = mimeServ->GetTypeFromExtension(ext, &mContentType);
}
}
else
rv = NS_ERROR_FAILURE;
nsCRT::free(fileName);
}
else {
rv = NS_ERROR_FAILURE;
}
if (NS_FAILED(rv)) {
mContentType = nsCRT::strdup(UNKNOWN_MIME);
if (mContentType == nsnull)
rv = NS_ERROR_OUT_OF_MEMORY;
else
rv = NS_OK;
}
}
if (NS_SUCCEEDED(rv)) {
*aContentType = nsCRT::strdup(mContentType);
if (*aContentType == nsnull)
rv = NS_ERROR_OUT_OF_MEMORY;
}
return rv;
}
NS_IMETHODIMP
nsJARChannel::GetContentLength(PRInt32* aContentLength)
{
if (mContentLength == -1)
return NS_ERROR_FAILURE;
*aContentLength = mContentLength;
return NS_OK;
}
NS_IMETHODIMP
nsJARChannel::GetLoadGroup(nsILoadGroup* *aLoadGroup)
{
*aLoadGroup = mLoadGroup;
NS_IF_ADDREF(*aLoadGroup);
return NS_OK;
}
NS_IMETHODIMP
nsJARChannel::SetLoadGroup(nsILoadGroup* aLoadGroup)
{
mLoadGroup = aLoadGroup;
return NS_OK;
}
NS_IMETHODIMP
nsJARChannel::GetOwner(nsISupports* *aOwner)
{
*aOwner = mOwner.get();
NS_IF_ADDREF(*aOwner);
return NS_OK;
}
NS_IMETHODIMP
nsJARChannel::SetOwner(nsISupports* aOwner)
{
mOwner = aOwner;
return NS_OK;
}
NS_IMETHODIMP
nsJARChannel::GetNotificationCallbacks(nsIInterfaceRequestor* *aNotificationCallbacks)
{
*aNotificationCallbacks = mCallbacks.get();
NS_IF_ADDREF(*aNotificationCallbacks);
return NS_OK;
}
NS_IMETHODIMP
nsJARChannel::SetNotificationCallbacks(nsIInterfaceRequestor* aNotificationCallbacks)
{
mCallbacks = aNotificationCallbacks;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// nsIStreamObserver methods:
NS_IMETHODIMP
nsJARChannel::OnStartRequest(nsIChannel* jarCacheTransport,
nsISupports* context)
{
return mUserListener->OnStartRequest(this, mUserContext);
}
NS_IMETHODIMP
nsJARChannel::OnStopRequest(nsIChannel* jarCacheTransport,
nsISupports* context,
nsresult status,
const PRUnichar* aMsg)
{
return mUserListener->OnStopRequest(this, mUserContext, status, aMsg);
}
////////////////////////////////////////////////////////////////////////////////
// nsIStreamListener methods:
NS_IMETHODIMP
nsJARChannel::OnDataAvailable(nsIChannel* jarCacheTransport,
nsISupports* context,
nsIInputStream *inStr,
PRUint32 sourceOffset,
PRUint32 count)
{
return mUserListener->OnDataAvailable(this, mUserContext,
inStr, sourceOffset, count);
}
////////////////////////////////////////////////////////////////////////////////
// nsIFileSystem methods:
NS_IMETHODIMP
nsJARChannel::Open(char* *contentType, PRInt32 *contentLength)
{
nsresult rv;
rv = nsComponentManager::CreateInstance(kZipReaderCID,
nsnull,
NS_GET_IID(nsIZipReader),
getter_AddRefs(mJAR));
if (NS_FAILED(rv)) return rv;
nsFileSpec fs;
rv = mJARBaseFile->GetFileSpec(&fs);
if (NS_FAILED(rv)) return rv;
rv = mJAR->Init(fs);
if (NS_FAILED(rv)) return rv;
rv = mJAR->Open();
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIZipEntry> entry;
rv = mJAR->GetEntry(mJAREntry, getter_AddRefs(entry));
if (NS_FAILED(rv)) return rv;
rv = entry->GetRealSize((PRUint32*)contentLength);
if (NS_FAILED(rv)) return rv;
return GetContentType(contentType);
}
NS_IMETHODIMP
nsJARChannel::Close(nsresult status)
{
mJAR = null_nsCOMPtr();
return NS_OK;
}
NS_IMETHODIMP
nsJARChannel::GetInputStream(nsIInputStream* *aInputStream)
{
return mJAR->GetInputStream(mJAREntry, aInputStream);
}
NS_IMETHODIMP
nsJARChannel::GetOutputStream(nsIOutputStream* *aOutputStream)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
////////////////////////////////////////////////////////////////////////////////
// nsIJARChannel methods:
NS_IMETHODIMP
nsJARChannel::EnumerateEntries(const char *aRoot, nsISimpleEnumerator **_retval)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
#if 0
NS_IMETHODIMP
nsJARChannel::GetName(char * *aName)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARChannel::GetCompression(PRUint16 *aCompression)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARChannel::GetSize(PRUint32 *aSize)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARChannel::GetRealsize(PRUint32 *aRealsize)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARChannel::GetCrc32(PRUint32 *aCrc32)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//nsZip methods
NS_IMETHODIMP
nsJARChannel::Open(const char *aZipFileName, PRInt32 *_retval)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARChannel::Extract(const char *aFilename, const char *aOutname, PRInt32 *_retval)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARChannel::Find(const char *aPattern, nsISimpleEnumerator **_retval)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
#endif
////////////////////////////////////////////////////////////////////////////////