pjs/extensions/finger/nsFingerChannel.cpp

543 строки
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C++
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):
*/
// finger implementation
#include "nsFingerChannel.h"
#include "nsIServiceManager.h"
#include "nsILoadGroup.h"
#include "nsIInterfaceRequestor.h"
#include "nsXPIDLString.h"
#include "nsISocketTransportService.h"
#include "nsIStringStream.h"
#include "nsMimeTypes.h"
#include "nsIStreamConverterService.h"
#include "nsITXTToHTMLConv.h"
static NS_DEFINE_CID(kSocketTransportServiceCID, NS_SOCKETTRANSPORTSERVICE_CID);
static NS_DEFINE_CID(kStreamConverterServiceCID, NS_STREAMCONVERTERSERVICE_CID);
#define BUFFER_SEG_SIZE (4*1024)
#define BUFFER_MAX_SIZE (64*1024)
// nsFingerChannel methods
nsFingerChannel::nsFingerChannel()
: mContentLength(-1),
mActAsObserver(PR_TRUE),
mPort(-1),
mStatus(NS_OK)
{
NS_INIT_REFCNT();
}
nsFingerChannel::~nsFingerChannel() {
}
NS_IMPL_THREADSAFE_ISUPPORTS4(nsFingerChannel, nsIChannel, nsIRequest,
nsIStreamListener, nsIStreamObserver)
nsresult
nsFingerChannel::Init(nsIURI* uri)
{
nsresult rv;
nsXPIDLCString autoBuffer;
NS_ASSERTION(uri, "no uri");
mUrl = uri;
// For security reasons, we do not allow the user to specify a
// non-default port for finger: URL's.
mPort = FINGER_PORT;
rv = mUrl->GetPath(getter_Copies(autoBuffer)); // autoBuffer = user@host
if (NS_FAILED(rv)) return rv;
nsCString cString(autoBuffer);
nsCString tempBuf;
PRUint32 i;
// Now parse out the user and host
for (i=0; cString[i] != '\0'; i++) {
if (cString[i] == '@') {
cString.Left(tempBuf, i);
mUser = tempBuf;
cString.Right(tempBuf, cString.Length() - i - 1);
mHost = tempBuf;
break;
}
}
// Catch the case of just the host being given
if (cString[i] == '\0') {
mHost = cString;
}
#ifdef DEBUG_bryner
printf("Status:mUser = %s, mHost = %s\n", (const char*)mUser,
(const char*)mHost);
#endif
if (!*(const char *)mHost) return NS_ERROR_NOT_INITIALIZED;
return NS_OK;
}
NS_METHOD
nsFingerChannel::Create(nsISupports* aOuter, const nsIID& aIID, void* *aResult)
{
nsFingerChannel* fc = new nsFingerChannel();
if (fc == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(fc);
nsresult rv = fc->QueryInterface(aIID, aResult);
NS_RELEASE(fc);
return rv;
}
////////////////////////////////////////////////////////////////////////////////
// nsIRequest methods:
NS_IMETHODIMP
nsFingerChannel::IsPending(PRBool *result)
{
NS_NOTREACHED("nsFingerChannel::IsPending");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::GetStatus(nsresult *status)
{
*status = mStatus;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::Cancel(nsresult status)
{
NS_ASSERTION(NS_FAILED(status), "shouldn't cancel with a success code");
nsresult rv = NS_ERROR_FAILURE;
mStatus = status;
if (mTransport) {
rv = mTransport->Cancel(status);
}
return rv;
}
NS_IMETHODIMP
nsFingerChannel::Suspend(void)
{
NS_NOTREACHED("nsFingerChannel::Suspend");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::Resume(void)
{
NS_NOTREACHED("nsFingerChannel::Resume");
return NS_ERROR_NOT_IMPLEMENTED;
}
////////////////////////////////////////////////////////////////////////////////
// nsIChannel methods:
NS_IMETHODIMP
nsFingerChannel::GetOriginalURI(nsIURI* *aURI)
{
*aURI = mOriginalURI ? mOriginalURI : mUrl;
NS_ADDREF(*aURI);
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetOriginalURI(nsIURI* aURI)
{
mOriginalURI = aURI;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::GetURI(nsIURI* *aURI)
{
*aURI = mUrl;
NS_IF_ADDREF(*aURI);
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetURI(nsIURI* aURI)
{
mUrl = aURI;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::OpenInputStream(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, BUFFER_SEG_SIZE,
BUFFER_MAX_SIZE, getter_AddRefs(channel));
if (NS_FAILED(rv)) return rv;
rv = channel->SetNotificationCallbacks(mCallbacks);
if (NS_FAILED(rv)) return rv;
return channel->OpenInputStream(_retval);
}
NS_IMETHODIMP
nsFingerChannel::OpenOutputStream(nsIOutputStream **_retval)
{
NS_NOTREACHED("nsFingerChannel::OpenOutputStream");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::AsyncOpen(nsIStreamObserver *observer, nsISupports* ctxt)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::AsyncRead(nsIStreamListener *aListener, 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, BUFFER_SEG_SIZE,
BUFFER_MAX_SIZE, getter_AddRefs(channel));
if (NS_FAILED(rv)) return rv;
rv = channel->SetNotificationCallbacks(mCallbacks);
if (NS_FAILED(rv)) return rv;
mListener = aListener;
mResponseContext = ctxt;
mTransport = channel;
return SendRequest(channel);
}
NS_IMETHODIMP
nsFingerChannel::AsyncWrite(nsIInputStream *fromStream,
nsIStreamObserver *observer,
nsISupports *ctxt)
{
NS_NOTREACHED("nsFingerChannel::AsyncWrite");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::GetLoadAttributes(PRUint32 *aLoadAttributes)
{
*aLoadAttributes = mLoadAttributes;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetLoadAttributes(PRUint32 aLoadAttributes)
{
mLoadAttributes = aLoadAttributes;
return NS_OK;
}
#define FINGER_TYPE TEXT_HTML
NS_IMETHODIMP
nsFingerChannel::GetContentType(char* *aContentType) {
if (!aContentType) return NS_ERROR_NULL_POINTER;
*aContentType = nsCRT::strdup(FINGER_TYPE);
if (!*aContentType) return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::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
nsFingerChannel::GetContentLength(PRInt32 *aContentLength)
{
*aContentLength = mContentLength;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetContentLength(PRInt32 aContentLength)
{
NS_NOTREACHED("nsFingerChannel::SetContentLength");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::GetTransferOffset(PRUint32 *aTransferOffset)
{
NS_NOTREACHED("nsFingerChannel::GetTransferOffset");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::SetTransferOffset(PRUint32 aTransferOffset)
{
NS_NOTREACHED("nsFingerChannel::SetTransferOffset");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::GetTransferCount(PRInt32 *aTransferCount)
{
NS_NOTREACHED("nsFingerChannel::GetTransferCount");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::SetTransferCount(PRInt32 aTransferCount)
{
NS_NOTREACHED("nsFingerChannel::SetTransferCount");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::GetBufferSegmentSize(PRUint32 *aBufferSegmentSize)
{
NS_NOTREACHED("nsFingerChannel::GetBufferSegmentSize");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::SetBufferSegmentSize(PRUint32 aBufferSegmentSize)
{
NS_NOTREACHED("nsFingerChannel::SetBufferSegmentSize");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::GetBufferMaxSize(PRUint32 *aBufferMaxSize)
{
NS_NOTREACHED("nsFingerChannel::GetBufferMaxSize");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::SetBufferMaxSize(PRUint32 aBufferMaxSize)
{
NS_NOTREACHED("nsFingerChannel::SetBufferMaxSize");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::GetShouldCache(PRBool *aShouldCache)
{
*aShouldCache = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::GetPipeliningAllowed(PRBool *aPipeliningAllowed)
{
*aPipeliningAllowed = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetPipeliningAllowed(PRBool aPipeliningAllowed)
{
NS_NOTREACHED("SetPipeliningAllowed");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsFingerChannel::GetLoadGroup(nsILoadGroup* *aLoadGroup)
{
*aLoadGroup = mLoadGroup;
NS_IF_ADDREF(*aLoadGroup);
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetLoadGroup(nsILoadGroup* aLoadGroup)
{
mLoadGroup = aLoadGroup;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::GetOwner(nsISupports* *aOwner)
{
*aOwner = mOwner.get();
NS_IF_ADDREF(*aOwner);
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetOwner(nsISupports* aOwner)
{
mOwner = aOwner;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::GetNotificationCallbacks(nsIInterfaceRequestor* *aNotificationCallbacks)
{
*aNotificationCallbacks = mCallbacks.get();
NS_IF_ADDREF(*aNotificationCallbacks);
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetNotificationCallbacks(nsIInterfaceRequestor* aNotificationCallbacks)
{
mCallbacks = aNotificationCallbacks;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::GetSecurityInfo(nsISupports * *aSecurityInfo)
{
*aSecurityInfo = nsnull;
return NS_OK;
}
// nsIStreamObserver methods
NS_IMETHODIMP
nsFingerChannel::OnStartRequest(nsIChannel *aChannel, nsISupports *aContext) {
if (!mActAsObserver) {
// acting as a listener
return mListener->OnStartRequest(this, aContext);
} else {
// we don't want to pass our AsyncWrite's OnStart through
// we just ignore this
return NS_OK;
}
}
NS_IMETHODIMP
nsFingerChannel::OnStopRequest(nsIChannel* aChannel, nsISupports* aContext,
nsresult aStatus, const PRUnichar* aMsg) {
#ifdef DEBUG_bryner
printf("nsFingerChannel::OnStopRequest, mActAsObserver=%d\n",
mActAsObserver);
printf(" aChannel = %p\n", aChannel);
#endif
nsresult rv = NS_OK;
if (NS_FAILED(aStatus) || !mActAsObserver) {
if (mLoadGroup) {
rv = mLoadGroup->RemoveChannel(this, nsnull, aStatus, aMsg);
if (NS_FAILED(rv)) return rv;
}
rv = mListener->OnStopRequest(this, aContext, aStatus, aMsg);
mTransport = 0;
return rv;
} else {
// at this point we know the request has been sent.
// we're no longer acting as an observer.
mActAsObserver = PR_FALSE;
nsCOMPtr<nsIStreamListener> converterListener;
NS_WITH_SERVICE(nsIStreamConverterService, StreamConvService,
kStreamConverterServiceCID, &rv);
if (NS_FAILED(rv)) return rv;
nsAutoString fromStr; fromStr.AssignWithConversion("text/plain");
nsAutoString toStr; toStr.AssignWithConversion("text/html");
rv = StreamConvService->AsyncConvertData(fromStr.GetUnicode(),
toStr.GetUnicode(), this, mResponseContext,
getter_AddRefs(converterListener));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsITXTToHTMLConv> converter(do_QueryInterface(converterListener));
if (converter) {
nsAutoString title; title.AssignWithConversion("Finger Results");
converter->SetTitle(title.GetUnicode());
converter->PreFormatHTML(PR_TRUE);
}
return aChannel->AsyncRead(converterListener, mResponseContext);
}
}
// nsIStreamListener method
NS_IMETHODIMP
nsFingerChannel::OnDataAvailable(nsIChannel* aChannel, nsISupports* aContext,
nsIInputStream *aInputStream, PRUint32 aSourceOffset,
PRUint32 aLength) {
mContentLength = aLength;
return mListener->OnDataAvailable(this, aContext, aInputStream, aSourceOffset, aLength);
}
nsresult
nsFingerChannel::SendRequest(nsIChannel* aChannel) {
// The text to send should already be in mUser
nsresult rv = NS_OK;
nsCOMPtr<nsISupports> result;
nsCOMPtr<nsIInputStream> charstream;
nsCString requestBuffer(mUser);
if (mLoadGroup) {
mLoadGroup->AddChannel(this, nsnull);
}
requestBuffer.Append(CRLF);
mRequest = requestBuffer.ToNewCString();
rv = NS_NewCharInputStream(getter_AddRefs(result), mRequest);
if (NS_FAILED(rv)) return rv;
charstream = do_QueryInterface(result, &rv);
if (NS_FAILED(rv)) return rv;
#ifdef DEBUG_bryner
printf("Sending: %s\n", requestBuffer.GetBuffer());
#endif
rv = aChannel->SetTransferCount(requestBuffer.Length());
if (NS_FAILED(rv)) return rv;
rv = aChannel->AsyncWrite(charstream, this, 0);
return rv;
}