RetroZilla/extensions/finger/nsFingerChannel.cpp
2015-10-20 23:03:22 -04:00

481 lines
12 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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
* Brian Ryner.
* Portions created by the Initial Developer are Copyright (C) 2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Brian Ryner <bryner@brianryner.com>
* Darin Fisher <darin@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
// finger implementation
#include "nsFingerChannel.h"
#include "nsIServiceManager.h"
#include "nsILoadGroup.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsXPIDLString.h"
#include "nsISocketTransportService.h"
#include "nsIStringStream.h"
#include "nsMimeTypes.h"
#include "nsIStreamConverterService.h"
#include "nsITXTToHTMLConv.h"
#include "nsIProgressEventSink.h"
#include "nsEventQueueUtils.h"
#include "nsNetUtil.h"
#include "nsCRT.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()
: mLoadFlags(LOAD_NORMAL)
, mStatus(NS_OK)
, mPort(-1)
{
}
nsFingerChannel::~nsFingerChannel()
{
}
NS_IMPL_ISUPPORTS4(nsFingerChannel,
nsIChannel,
nsIRequest,
nsIStreamListener,
nsIRequestObserver)
nsresult
nsFingerChannel::Init(nsIURI *uri, nsIProxyInfo *proxyInfo)
{
nsresult rv;
nsCAutoString autoBuffer;
NS_ASSERTION(uri, "no uri");
mURI = uri;
mProxyInfo = proxyInfo;
// For security reasons, we do not allow the user to specify a
// non-default port for finger: URL's.
mPort = FINGER_PORT;
rv = mURI->GetPath(autoBuffer); // autoBuffer = user@host
if (NS_FAILED(rv)) return rv;
// Now parse out the user and host
const char* buf = autoBuffer.get();
const char* pos = strchr(buf, '@');
// Catch the case of just the host being given
if (!pos) {
mUser.Truncate();
mHost.Assign(buf);
} else {
mUser.Assign(buf, pos-buf);
mHost.Assign(pos+1); // ignore '@'
}
if (mHost.IsEmpty())
return NS_ERROR_MALFORMED_URI;
mContentType.AssignLiteral(TEXT_HTML); // expected content-type
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// nsIRequest methods:
NS_IMETHODIMP
nsFingerChannel::GetName(nsACString &result)
{
return mURI->GetSpec(result);
}
NS_IMETHODIMP
nsFingerChannel::IsPending(PRBool *result)
{
*result = (mPump != nsnull);
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::GetStatus(nsresult *status)
{
if (NS_SUCCEEDED(mStatus) && mPump)
mPump->GetStatus(status);
else
*status = mStatus;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::Cancel(nsresult status)
{
NS_ASSERTION(NS_FAILED(status), "shouldn't cancel with a success code");
mStatus = status;
if (mPump)
mPump->Cancel(status);
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
nsFingerChannel::Suspend()
{
if (mPump)
return mPump->Suspend();
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
nsFingerChannel::Resume()
{
if (mPump)
return mPump->Resume();
return NS_ERROR_UNEXPECTED;
}
////////////////////////////////////////////////////////////////////////////////
// nsIChannel methods:
NS_IMETHODIMP
nsFingerChannel::GetOriginalURI(nsIURI* *aURI)
{
*aURI = mOriginalURI ? mOriginalURI : mURI;
NS_ADDREF(*aURI);
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetOriginalURI(nsIURI* aURI)
{
mOriginalURI = aURI;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::GetURI(nsIURI* *aURI)
{
*aURI = mURI;
NS_IF_ADDREF(*aURI);
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::Open(nsIInputStream **_retval)
{
return NS_ImplementChannelOpen(this, _retval);
}
NS_IMETHODIMP
nsFingerChannel::AsyncOpen(nsIStreamListener *aListener, nsISupports *ctxt)
{
nsresult rv = NS_CheckPortSafety(mPort, "finger");
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIEventQueue> eventQ;
rv = NS_GetCurrentEventQ(getter_AddRefs(eventQ));
if (NS_FAILED(rv)) return rv;
//
// create transport
//
nsCOMPtr<nsISocketTransportService> sts =
do_GetService(kSocketTransportServiceCID, &rv);
if (NS_FAILED(rv)) return rv;
rv = sts->CreateTransport(nsnull, 0, mHost, mPort, mProxyInfo,
getter_AddRefs(mTransport));
if (NS_FAILED(rv)) return rv;
// not fatal if this fails
mTransport->SetEventSink(this, eventQ);
rv = WriteRequest(mTransport);
if (NS_FAILED(rv)) return rv;
//
// create TXT to HTML stream converter
//
nsCOMPtr<nsIStreamConverterService> scs =
do_GetService(kStreamConverterServiceCID, &rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIStreamListener> convListener;
rv = scs->AsyncConvertData("text/plain", "text/html", this, nsnull,
getter_AddRefs(convListener));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsITXTToHTMLConv> conv = do_QueryInterface(convListener);
if (conv) {
nsCAutoString userHost;
rv = mURI->GetPath(userHost);
nsAutoString title;
title.AppendLiteral("Finger information for ");
AppendUTF8toUTF16(userHost, title);
conv->SetTitle(title.get());
conv->PreFormatHTML(PR_TRUE);
}
//
// open input stream, and create input stream pump...
//
nsCOMPtr<nsIInputStream> sockIn;
rv = mTransport->OpenInputStream(0, 0, 0, getter_AddRefs(sockIn));
if (NS_FAILED(rv)) return rv;
rv = NS_NewInputStreamPump(getter_AddRefs(mPump), sockIn);
if (NS_FAILED(rv)) return rv;
rv = mPump->AsyncRead(convListener, nsnull);
if (NS_FAILED(rv)) return rv;
if (mLoadGroup)
mLoadGroup->AddRequest(this, nsnull);
mListener = aListener;
mListenerContext = ctxt;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::GetLoadFlags(PRUint32 *aLoadFlags)
{
*aLoadFlags = mLoadFlags;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetLoadFlags(PRUint32 aLoadFlags)
{
mLoadFlags = aLoadFlags;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::GetContentType(nsACString &aContentType)
{
aContentType = mContentType;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetContentType(const nsACString &aContentType)
{
mContentType = aContentType;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::GetContentCharset(nsACString &aContentCharset)
{
aContentCharset = mContentCharset;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetContentCharset(const nsACString &aContentCharset)
{
mContentCharset = aContentCharset;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::GetContentLength(PRInt32 *aContentLength)
{
*aContentLength = -1;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetContentLength(PRInt32 aContentLength)
{
// silently ignore this...
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::GetLoadGroup(nsILoadGroup* *aLoadGroup)
{
*aLoadGroup = mLoadGroup;
NS_IF_ADDREF(*aLoadGroup);
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::SetLoadGroup(nsILoadGroup* aLoadGroup)
{
mLoadGroup = aLoadGroup;
mProgressSink = nsnull;
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;
mProgressSink = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::GetSecurityInfo(nsISupports **aSecurityInfo)
{
if (mTransport)
return mTransport->GetSecurityInfo(aSecurityInfo);
*aSecurityInfo = nsnull;
return NS_OK;
}
//-----------------------------------------------------------------------------
// nsIRequestObserver methods
//-----------------------------------------------------------------------------
NS_IMETHODIMP
nsFingerChannel::OnStartRequest(nsIRequest *req, nsISupports *ctx)
{
return mListener->OnStartRequest(this, mListenerContext);
}
NS_IMETHODIMP
nsFingerChannel::OnStopRequest(nsIRequest *req, nsISupports *ctx, nsresult status)
{
if (NS_SUCCEEDED(mStatus))
mStatus = status;
mListener->OnStopRequest(this, mListenerContext, mStatus);
mListener = 0;
mListenerContext = 0;
if (mLoadGroup)
mLoadGroup->RemoveRequest(this, nsnull, mStatus);
mPump = 0;
mTransport = 0;
// Drop notification callbacks to prevent cycles.
mCallbacks = 0;
mProgressSink = 0;
return NS_OK;
}
NS_IMETHODIMP
nsFingerChannel::OnDataAvailable(nsIRequest *req, nsISupports *ctx,
nsIInputStream *stream, PRUint32 offset,
PRUint32 count)
{
return mListener->OnDataAvailable(this, mListenerContext, stream, offset, count);
}
//-----------------------------------------------------------------------------
// nsITransportEventSink methods
//-----------------------------------------------------------------------------
NS_IMETHODIMP
nsFingerChannel::OnTransportStatus(nsITransport *trans, nsresult status,
PRUint64 progress, PRUint64 progressMax)
{
if (!mProgressSink)
NS_QueryNotificationCallbacks(mCallbacks, mLoadGroup, mProgressSink);
// suppress status notification if channel is no longer pending!
if (mProgressSink && NS_SUCCEEDED(mStatus) && mPump && !(mLoadFlags & LOAD_BACKGROUND)) {
mProgressSink->OnStatus(this, nsnull, status,
NS_ConvertUTF8toUTF16(mHost).get());
if (status == nsISocketTransport::STATUS_RECEIVING_FROM ||
status == nsISocketTransport::STATUS_SENDING_TO) {
mProgressSink->OnProgress(this, nsnull, progress, progressMax);
}
}
return NS_OK;
}
//-----------------------------------------------------------------------------
nsresult
nsFingerChannel::WriteRequest(nsITransport *trans)
{
// The text to send should already be in mUser
nsresult rv;
nsCAutoString requestBuf;
requestBuf = mUser + NS_LITERAL_CSTRING("\r\n");
nsCOMPtr<nsIOutputStream> stream;
rv = trans->OpenOutputStream(0, requestBuf.Length(), 1, getter_AddRefs(stream));
if (NS_FAILED(rv)) return rv;
PRUint32 n;
rv = stream->Write(requestBuf.get(), requestBuf.Length(), &n);
if (NS_FAILED(rv)) return rv;
NS_ENSURE_TRUE(n == requestBuf.Length(), NS_ERROR_UNEXPECTED);
return NS_OK;
}