pjs/extensions/datetime/nsDateTimeChannel.cpp

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Исходник Обычный вид История

/* -*- 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 1.1 (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):
*/
// datetime implementation
#include "nsDateTimeChannel.h"
#include "nsIServiceManager.h"
#include "nsILoadGroup.h"
#include "nsIInterfaceRequestor.h"
#include "nsXPIDLString.h"
#include "nsISocketTransportService.h"
static NS_DEFINE_CID(kSocketTransportServiceCID, NS_SOCKETTRANSPORTSERVICE_CID);
// nsDateTimeChannel methods
nsDateTimeChannel::nsDateTimeChannel() {
NS_INIT_REFCNT();
mContentLength = -1;
mPort = -1;
}
nsDateTimeChannel::~nsDateTimeChannel() {
}
NS_IMPL_ISUPPORTS4(nsDateTimeChannel, nsIChannel, nsIRequest, nsIStreamListener, nsIStreamObserver)
nsresult
nsDateTimeChannel::Init(const char* verb,
nsIURI* uri,
nsILoadGroup* aLoadGroup,
nsIInterfaceRequestor* notificationCallbacks,
nsLoadFlags loadAttributes,
nsIURI* originalURI,
PRUint32 bufferSegmentSize,
PRUint32 bufferMaxSize)
{
nsresult rv;
NS_ASSERTION(uri, "no uri");
mOriginalURI = originalURI ? originalURI : uri;
mUrl = uri;
rv = mUrl->GetPort(&mPort);
if (NS_FAILED(rv) || mPort < 1)
mPort = DATETIME_PORT;
rv = mUrl->GetPath(getter_Copies(mHost));
if (NS_FAILED(rv)) return rv;
if (!*(const char *)mHost) return NS_ERROR_NOT_INITIALIZED;
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;
}
NS_METHOD
nsDateTimeChannel::Create(nsISupports* aOuter, const nsIID& aIID, void* *aResult)
{
nsDateTimeChannel* dc = new nsDateTimeChannel();
if (dc == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(dc);
nsresult rv = dc->QueryInterface(aIID, aResult);
NS_RELEASE(dc);
return rv;
}
////////////////////////////////////////////////////////////////////////////////
// nsIRequest methods:
NS_IMETHODIMP
nsDateTimeChannel::IsPending(PRBool *result)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDateTimeChannel::Cancel(void)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDateTimeChannel::Suspend(void)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDateTimeChannel::Resume(void)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
////////////////////////////////////////////////////////////////////////////////
// nsIChannel methods:
NS_IMETHODIMP
nsDateTimeChannel::GetOriginalURI(nsIURI * *aURI)
{
*aURI = mOriginalURI;
NS_ADDREF(*aURI);
return NS_OK;
}
NS_IMETHODIMP
nsDateTimeChannel::GetURI(nsIURI * *aURI)
{
*aURI = mUrl;
NS_IF_ADDREF(*aURI);
return NS_OK;
}
NS_IMETHODIMP
nsDateTimeChannel::OpenInputStream(PRUint32 startPosition, PRInt32 readCount,
nsIInputStream **_retval)
{
nsresult rv = NS_OK;
NS_WITH_SERVICE(nsISocketTransportService, socketService, kSocketTransportServiceCID, &rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIChannel> channel;
rv = socketService->CreateTransport(mHost, mPort, mHost, 32, 32, getter_AddRefs(channel));
if (NS_FAILED(rv)) return rv;
rv = channel->SetNotificationCallbacks(mCallbacks);
if (NS_FAILED(rv)) return rv;
return channel->OpenInputStream(startPosition, readCount, _retval);
}
NS_IMETHODIMP
nsDateTimeChannel::OpenOutputStream(PRUint32 startPosition, nsIOutputStream **_retval)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDateTimeChannel::AsyncOpen(nsIStreamObserver *observer, nsISupports* ctxt)
{
nsresult rv = NS_OK;
NS_WITH_SERVICE(nsISocketTransportService, socketService, kSocketTransportServiceCID, &rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIChannel> channel;
rv = socketService->CreateTransport(mHost, mPort, mHost, 32, 32, getter_AddRefs(channel));
if (NS_FAILED(rv)) return rv;
rv = channel->SetNotificationCallbacks(mCallbacks);
if (NS_FAILED(rv)) return rv;
return channel->AsyncOpen(observer, ctxt);
}
NS_IMETHODIMP
nsDateTimeChannel::AsyncRead(PRUint32 startPosition, PRInt32 readCount,
nsISupports *ctxt,
nsIStreamListener *aListener)
{
nsresult rv = NS_OK;
NS_WITH_SERVICE(nsISocketTransportService, socketService, kSocketTransportServiceCID, &rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIChannel> channel;
rv = socketService->CreateTransport(mHost, mPort, mHost, 32, 32, getter_AddRefs(channel));
if (NS_FAILED(rv)) return rv;
rv = channel->SetNotificationCallbacks(mCallbacks);
if (NS_FAILED(rv)) return rv;
mListener = aListener;
return channel->AsyncRead(startPosition, readCount, ctxt, this);
}
NS_IMETHODIMP
nsDateTimeChannel::AsyncWrite(nsIInputStream *fromStream,
PRUint32 startPosition,
PRInt32 writeCount,
nsISupports *ctxt,
nsIStreamObserver *observer)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDateTimeChannel::GetLoadAttributes(PRUint32 *aLoadAttributes)
{
*aLoadAttributes = mLoadAttributes;
return NS_OK;
}
NS_IMETHODIMP
nsDateTimeChannel::SetLoadAttributes(PRUint32 aLoadAttributes)
{
mLoadAttributes = aLoadAttributes;
return NS_OK;
}
#define DATETIME_TYPE "text/plain"
NS_IMETHODIMP
nsDateTimeChannel::GetContentType(char* *aContentType) {
if (!aContentType) return NS_ERROR_NULL_POINTER;
*aContentType = nsCRT::strdup(DATETIME_TYPE);
if (!*aContentType) return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
NS_IMETHODIMP
nsDateTimeChannel::SetContentType(const char *aContentType)
{
//It doesn't make sense to set the content-type on this type
// of channel...
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsDateTimeChannel::GetContentLength(PRInt32 *aContentLength)
{
*aContentLength = mContentLength;
return NS_OK;
}
NS_IMETHODIMP
nsDateTimeChannel::GetLoadGroup(nsILoadGroup* *aLoadGroup)
{
*aLoadGroup = mLoadGroup;
NS_IF_ADDREF(*aLoadGroup);
return NS_OK;
}
NS_IMETHODIMP
nsDateTimeChannel::SetLoadGroup(nsILoadGroup* aLoadGroup)
{
if (mLoadGroup) // if we already had a load group remove ourselves...
(void)mLoadGroup->RemoveChannel(this, nsnull, nsnull, nsnull);
mLoadGroup = aLoadGroup;
if (mLoadGroup) {
return mLoadGroup->AddChannel(this, nsnull);
}
return NS_OK;
}
NS_IMETHODIMP
nsDateTimeChannel::GetOwner(nsISupports* *aOwner)
{
*aOwner = mOwner.get();
NS_IF_ADDREF(*aOwner);
return NS_OK;
}
NS_IMETHODIMP
nsDateTimeChannel::SetOwner(nsISupports* aOwner)
{
mOwner = aOwner;
return NS_OK;
}
NS_IMETHODIMP
nsDateTimeChannel::GetNotificationCallbacks(nsIInterfaceRequestor* *aNotificationCallbacks)
{
*aNotificationCallbacks = mCallbacks.get();
NS_IF_ADDREF(*aNotificationCallbacks);
return NS_OK;
}
NS_IMETHODIMP
nsDateTimeChannel::SetNotificationCallbacks(nsIInterfaceRequestor* aNotificationCallbacks)
{
mCallbacks = aNotificationCallbacks;
return NS_OK;
}
// nsIStreamObserver methods
NS_IMETHODIMP
nsDateTimeChannel::OnStartRequest(nsIChannel *aChannel, nsISupports *aContext) {
return mListener->OnStartRequest(this, aContext);
}
NS_IMETHODIMP
nsDateTimeChannel::OnStopRequest(nsIChannel* aChannel, nsISupports* aContext,
nsresult aStatus, const PRUnichar* aMsg) {
if (mLoadGroup) {
nsresult rv = mLoadGroup->RemoveChannel(this, nsnull, aStatus, aMsg);
if (NS_FAILED(rv)) return rv;
}
return mListener->OnStopRequest(this, aContext, aStatus, aMsg);
}
// nsIStreamListener method
NS_IMETHODIMP
nsDateTimeChannel::OnDataAvailable(nsIChannel* aChannel, nsISupports* aContext,
nsIInputStream *aInputStream, PRUint32 aSourceOffset,
PRUint32 aLength) {
mContentLength = aLength;
return mListener->OnDataAvailable(this, aContext, aInputStream, aSourceOffset, aLength);
}