зеркало из https://github.com/mozilla/gecko-dev.git
435 строки
11 KiB
C++
435 строки
11 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Brian Ryner.
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* Portions created by Brian Ryner are Copyright (C) 2000 Brian Ryner.
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* All Rights Reserved.
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*
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* Contributor(s):
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* Brian Ryner <bryner@uiuc.edu>
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*/
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// finger implementation
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#include "nsFingerChannel.h"
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#include "nsIServiceManager.h"
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#include "nsILoadGroup.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsXPIDLString.h"
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#include "nsISocketTransportService.h"
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#include "nsIStringStream.h"
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#include "nsMimeTypes.h"
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#include "nsIStreamConverterService.h"
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#include "nsITXTToHTMLConv.h"
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#include "nsIProgressEventSink.h"
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#include "nsNetUtil.h"
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static NS_DEFINE_CID(kSocketTransportServiceCID, NS_SOCKETTRANSPORTSERVICE_CID);
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static NS_DEFINE_CID(kStreamConverterServiceCID, NS_STREAMCONVERTERSERVICE_CID);
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#define BUFFER_SEG_SIZE (4*1024)
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#define BUFFER_MAX_SIZE (64*1024)
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// nsFingerChannel methods
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nsFingerChannel::nsFingerChannel()
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: mContentLength(-1),
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mActAsObserver(PR_TRUE),
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mPort(-1),
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mStatus(NS_OK)
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{
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NS_INIT_REFCNT();
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}
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nsFingerChannel::~nsFingerChannel() {
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}
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NS_IMPL_THREADSAFE_ISUPPORTS4(nsFingerChannel,
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nsIChannel,
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nsIRequest,
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nsIStreamListener,
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nsIStreamObserver)
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nsresult
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nsFingerChannel::Init(nsIURI* uri)
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{
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nsresult rv;
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nsXPIDLCString autoBuffer;
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NS_ASSERTION(uri, "no uri");
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mUrl = uri;
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// For security reasons, we do not allow the user to specify a
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// non-default port for finger: URL's.
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mPort = FINGER_PORT;
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rv = mUrl->GetPath(getter_Copies(autoBuffer)); // autoBuffer = user@host
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if (NS_FAILED(rv)) return rv;
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// Now parse out the user and host
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const char* buf = autoBuffer.get();
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const char* pos = PL_strchr(buf, '@');
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// Catch the case of just the host being given
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if (!pos) {
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mHost.Assign(buf);
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} else {
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mUser.Assign(buf,pos-buf);
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mHost.Assign(pos+1); // ignore '@'
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}
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if (mHost.IsEmpty()) return NS_ERROR_NOT_INITIALIZED;
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return NS_OK;
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}
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NS_METHOD
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nsFingerChannel::Create(nsISupports* aOuter, const nsIID& aIID, void* *aResult)
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{
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nsFingerChannel* fc = new nsFingerChannel();
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if (fc == nsnull)
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(fc);
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nsresult rv = fc->QueryInterface(aIID, aResult);
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NS_RELEASE(fc);
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return rv;
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}
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////////////////////////////////////////////////////////////////////////////////
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// nsIRequest methods:
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NS_IMETHODIMP
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nsFingerChannel::GetName(PRUnichar* *result)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsFingerChannel::IsPending(PRBool *result)
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{
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NS_NOTREACHED("nsFingerChannel::IsPending");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsFingerChannel::GetStatus(nsresult *status)
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{
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*status = mStatus;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::Cancel(nsresult status)
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{
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NS_ASSERTION(NS_FAILED(status), "shouldn't cancel with a success code");
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nsresult rv = NS_ERROR_FAILURE;
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mStatus = status;
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if (mTransportRequest) {
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rv = mTransportRequest->Cancel(status);
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}
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return rv;
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}
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NS_IMETHODIMP
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nsFingerChannel::Suspend(void)
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{
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NS_NOTREACHED("nsFingerChannel::Suspend");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsFingerChannel::Resume(void)
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{
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NS_NOTREACHED("nsFingerChannel::Resume");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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////////////////////////////////////////////////////////////////////////////////
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// nsIChannel methods:
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NS_IMETHODIMP
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nsFingerChannel::GetOriginalURI(nsIURI* *aURI)
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{
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*aURI = mOriginalURI ? mOriginalURI : mUrl;
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NS_ADDREF(*aURI);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::SetOriginalURI(nsIURI* aURI)
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{
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mOriginalURI = aURI;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::GetURI(nsIURI* *aURI)
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{
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*aURI = mUrl;
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NS_IF_ADDREF(*aURI);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::SetURI(nsIURI* aURI)
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{
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mUrl = aURI;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::Open(nsIInputStream **_retval)
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{
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nsresult rv = NS_OK;
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NS_WITH_SERVICE(nsISocketTransportService, socketService, kSocketTransportServiceCID, &rv);
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if (NS_FAILED(rv)) return rv;
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rv = socketService->CreateTransport(mHost, mPort, nsnull, -1, BUFFER_SEG_SIZE,
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BUFFER_MAX_SIZE, getter_AddRefs(mTransport));
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if (NS_FAILED(rv)) return rv;
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mTransport->SetNotificationCallbacks(mCallbacks,
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(mLoadAttributes & LOAD_BACKGROUND));
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return mTransport->OpenInputStream(0, -1, 0, _retval);
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}
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NS_IMETHODIMP
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nsFingerChannel::AsyncOpen(nsIStreamListener *aListener, nsISupports *ctxt)
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{
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nsresult rv = NS_OK;
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NS_WITH_SERVICE(nsISocketTransportService, socketService, kSocketTransportServiceCID, &rv);
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if (NS_FAILED(rv)) return rv;
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rv = socketService->CreateTransport(mHost, mPort, nsnull, -1, BUFFER_SEG_SIZE,
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BUFFER_MAX_SIZE, getter_AddRefs(mTransport));
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if (NS_FAILED(rv)) return rv;
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mTransport->SetNotificationCallbacks(mCallbacks,
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(mLoadAttributes & LOAD_BACKGROUND));
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mListener = aListener;
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mResponseContext = ctxt;
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return SendRequest(mTransport);
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}
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NS_IMETHODIMP
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nsFingerChannel::GetLoadAttributes(PRUint32 *aLoadAttributes)
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{
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*aLoadAttributes = mLoadAttributes;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::SetLoadAttributes(PRUint32 aLoadAttributes)
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{
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mLoadAttributes = aLoadAttributes;
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return NS_OK;
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}
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#define FINGER_TYPE TEXT_HTML
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NS_IMETHODIMP
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nsFingerChannel::GetContentType(char* *aContentType) {
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if (!aContentType) return NS_ERROR_NULL_POINTER;
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*aContentType = nsCRT::strdup(FINGER_TYPE);
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if (!*aContentType) return NS_ERROR_OUT_OF_MEMORY;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::SetContentType(const char *aContentType)
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{
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//It doesn't make sense to set the content-type on this type
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// of channel...
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return NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP
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nsFingerChannel::GetContentLength(PRInt32 *aContentLength)
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{
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*aContentLength = mContentLength;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::SetContentLength(PRInt32 aContentLength)
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{
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NS_NOTREACHED("nsFingerChannel::SetContentLength");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsFingerChannel::GetLoadGroup(nsILoadGroup* *aLoadGroup)
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{
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*aLoadGroup = mLoadGroup;
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NS_IF_ADDREF(*aLoadGroup);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::SetLoadGroup(nsILoadGroup* aLoadGroup)
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{
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mLoadGroup = aLoadGroup;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::GetOwner(nsISupports* *aOwner)
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{
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*aOwner = mOwner.get();
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NS_IF_ADDREF(*aOwner);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::SetOwner(nsISupports* aOwner)
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{
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mOwner = aOwner;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::GetNotificationCallbacks(nsIInterfaceRequestor* *aNotificationCallbacks)
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{
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*aNotificationCallbacks = mCallbacks.get();
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NS_IF_ADDREF(*aNotificationCallbacks);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::SetNotificationCallbacks(nsIInterfaceRequestor* aNotificationCallbacks)
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{
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mCallbacks = aNotificationCallbacks;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFingerChannel::GetSecurityInfo(nsISupports * *aSecurityInfo)
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{
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*aSecurityInfo = nsnull;
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return NS_OK;
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}
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// nsIStreamObserver methods
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NS_IMETHODIMP
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nsFingerChannel::OnStartRequest(nsIRequest *aRequest, nsISupports *aContext) {
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if (!mActAsObserver) {
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// acting as a listener
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return mListener->OnStartRequest(this, mResponseContext);
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} else {
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// we don't want to pass our AsyncWrite's OnStart through
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// we just ignore this
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return NS_OK;
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}
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}
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NS_IMETHODIMP
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nsFingerChannel::OnStopRequest(nsIRequest *aRequest, nsISupports* aContext,
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nsresult aStatus, const PRUnichar* aStatusArg)
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{
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nsresult rv = NS_OK;
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if (NS_FAILED(aStatus) || !mActAsObserver) {
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if (mLoadGroup) {
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rv = mLoadGroup->RemoveRequest(this, nsnull, aStatus, aStatusArg);
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if (NS_FAILED(rv)) return rv;
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}
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rv = mListener->OnStopRequest(this, mResponseContext, aStatus, aStatusArg);
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mTransport = 0;
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return rv;
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} else {
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// at this point we know the request has been sent.
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// we're no longer acting as an observer.
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mActAsObserver = PR_FALSE;
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nsCOMPtr<nsIStreamListener> converterListener;
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NS_WITH_SERVICE(nsIStreamConverterService, StreamConvService,
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kStreamConverterServiceCID, &rv);
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if (NS_FAILED(rv)) return rv;
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nsAutoString fromStr; fromStr.AssignWithConversion("text/plain");
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nsAutoString toStr; toStr.AssignWithConversion("text/html");
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rv = StreamConvService->AsyncConvertData(fromStr.GetUnicode(),
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toStr.GetUnicode(), this, mResponseContext,
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getter_AddRefs(converterListener));
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsITXTToHTMLConv> converter(do_QueryInterface(converterListener));
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if (converter) {
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nsAutoString title; title.AssignWithConversion("Finger information for ");
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nsXPIDLCString userHost;
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rv = mUrl->GetPath(getter_Copies(userHost));
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title.AppendWithConversion(userHost);
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converter->SetTitle(title.GetUnicode());
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converter->PreFormatHTML(PR_TRUE);
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}
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return mTransport->AsyncRead(converterListener, mResponseContext, 0,-1, 0,
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getter_AddRefs(mTransportRequest));
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}
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}
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// nsIStreamListener method
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NS_IMETHODIMP
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nsFingerChannel::OnDataAvailable(nsIRequest *aRequest, nsISupports* aContext,
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nsIInputStream *aInputStream, PRUint32 aSourceOffset,
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PRUint32 aLength) {
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mContentLength = aLength;
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return mListener->OnDataAvailable(this, mResponseContext, aInputStream, aSourceOffset, aLength);
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}
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nsresult
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nsFingerChannel::SendRequest(nsITransport* aTransport) {
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// The text to send should already be in mUser
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nsresult rv = NS_OK;
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nsCOMPtr<nsISupports> result;
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nsCOMPtr<nsIInputStream> charstream;
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nsCString requestBuffer(mUser);
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if (mLoadGroup) {
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mLoadGroup->AddRequest(this, nsnull);
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}
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requestBuffer.Append(CRLF);
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mRequest = requestBuffer.ToNewCString();
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rv = NS_NewCharInputStream(getter_AddRefs(result), mRequest);
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if (NS_FAILED(rv)) return rv;
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charstream = do_QueryInterface(result, &rv);
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if (NS_FAILED(rv)) return rv;
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rv = NS_AsyncWriteFromStream(getter_AddRefs(mTransportRequest),
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aTransport, charstream,
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0, requestBuffer.Length(), 0,
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this, nsnull);
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return rv;
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}
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