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pjs/mailnews/base/util/nsMsgProtocol.cpp

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/* -*- 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):
*/
#include "msgCore.h"
#include "nsMsgProtocol.h"
#include "nsIMsgMailNewsUrl.h"
#include "nsISocketTransportService.h"
#include "nsXPIDLString.h"
#include "nsSpecialSystemDirectory.h"
#include "nsILoadGroup.h"
#include "nsIIOService.h"
#include "nsFileStream.h"
#include "nsINetSupportDialogService.h"
#include "nsIDNSService.h"
static NS_DEFINE_CID(kNetSupportDialogCID, NS_NETSUPPORTDIALOG_CID);
static NS_DEFINE_CID(kSocketTransportServiceCID, NS_SOCKETTRANSPORTSERVICE_CID);
static NS_DEFINE_CID(kIOServiceCID, NS_IOSERVICE_CID);
NS_IMPL_ISUPPORTS3(nsMsgProtocol, nsIStreamListener, nsIStreamObserver, nsIChannel)
nsMsgProtocol::nsMsgProtocol(nsIURI * aURL)
{
NS_INIT_REFCNT();
m_flags = 0;
m_startPosition = 0;
m_readCount = 0;
m_socketIsOpen = PR_FALSE;
m_tempMsgFileSpec = nsSpecialSystemDirectory(nsSpecialSystemDirectory::OS_TemporaryDirectory);
m_tempMsgFileSpec += "tempMessage.eml";
m_url = aURL;
}
nsMsgProtocol::~nsMsgProtocol()
{}
nsresult nsMsgProtocol::OpenNetworkSocketWithInfo(const char * aHostName, PRInt32 aGetPort, const char *connectionType)
{
NS_ENSURE_ARG(aHostName);
nsresult rv = NS_OK;
nsCOMPtr<nsISocketTransportService> socketService (do_GetService(kSocketTransportServiceCID));
NS_ENSURE_TRUE(socketService, NS_ERROR_FAILURE);
m_readCount = -1; // with socket connections we want to read as much data as arrives
m_startPosition = 0;
rv = socketService->CreateTransportOfType(connectionType, aHostName, aGetPort, nsnull, 0, 0, getter_AddRefs(m_channel));
if (NS_FAILED(rv)) return rv;
m_socketIsOpen = PR_FALSE;
return SetupTransportState();
}
nsresult nsMsgProtocol::OpenNetworkSocket(nsIURI * aURL, const char *connectionType) // open a connection on this url
{
NS_ENSURE_ARG(aURL);
nsXPIDLCString hostName;
PRInt32 port = 0;
aURL->GetPort(&port);
aURL->GetHost(getter_Copies(hostName));
return OpenNetworkSocketWithInfo(hostName, port, connectionType);
}
nsresult nsMsgProtocol::OpenFileSocket(nsIURI * aURL, const nsFileSpec * aFileSpec, PRUint32 aStartPosition, PRInt32 aReadCount)
{
// mscott - file needs to be encoded directly into aURL. I should be able to get
// rid of this method completely.
nsresult rv = NS_OK;
m_startPosition = aStartPosition;
m_readCount = aReadCount;
NS_WITH_SERVICE(nsIIOService, netService, kIOServiceCID, &rv);
if (NS_SUCCEEDED(rv) && aURL)
{
// extract the file path from the uri...
nsXPIDLCString filePath;
aURL->GetPath(getter_Copies(filePath));
char * urlSpec = PR_smprintf("file://%s", (const char *) filePath);
rv = netService->NewChannel(urlSpec,
nsnull, // null base URI
getter_AddRefs(m_channel));
PR_FREEIF(urlSpec);
if (NS_SUCCEEDED(rv) && m_channel)
{
rv = m_channel->SetLoadGroup(m_loadGroup);
if (NS_SUCCEEDED(rv)) {
m_socketIsOpen = PR_FALSE;
// rv = SetupTransportState();
}
}
}
return rv;
}
nsresult nsMsgProtocol::SetupTransportState()
{
nsresult rv = NS_OK;
if (!m_socketIsOpen && m_channel)
{
rv = m_channel->OpenOutputStream(getter_AddRefs(m_outputStream));
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to create an output stream");
// we want to open the stream
} // if m_transport
return rv;
}
nsresult nsMsgProtocol::CloseSocket()
{
nsresult rv = NS_OK;
// release all of our socket state
m_socketIsOpen = PR_FALSE;
m_outputStream = null_nsCOMPtr();
// we need to call Cancel so that we remove the socket transport from the mActiveTransportList. see bug #30648
if (m_channel) {
rv = m_channel->Cancel(NS_BINDING_ABORTED);
}
m_channel = null_nsCOMPtr();
return rv;
}
/*
* Writes the data contained in dataBuffer into the current output stream. It also informs
* the transport layer that this data is now available for transmission.
* Returns a positive number for success, 0 for failure (not all the bytes were written to the
* stream, etc). We need to make another pass through this file to install an error system (mscott)
*/
PRInt32 nsMsgProtocol::SendData(nsIURI * aURL, const char * dataBuffer)
{
PRUint32 writeCount = 0;
PRInt32 status = 0;
// NS_PRECONDITION(m_outputStream, "oops....we don't have an output stream...how did that happen?");
if (dataBuffer && m_outputStream)
{
status = m_outputStream->Write(dataBuffer, PL_strlen(dataBuffer), &writeCount);
}
return status;
}
// Whenever data arrives from the connection, core netlib notifices the protocol by calling
// OnDataAvailable. We then read and process the incoming data from the input stream.
NS_IMETHODIMP nsMsgProtocol::OnDataAvailable(nsIChannel * /* aChannel */, nsISupports *ctxt, nsIInputStream *inStr, PRUint32 sourceOffset, PRUint32 count)
{
// right now, this really just means turn around and churn through the state machine
nsCOMPtr<nsIURI> uri = do_QueryInterface(ctxt);
return ProcessProtocolState(uri, inStr, sourceOffset, count);
}
NS_IMETHODIMP nsMsgProtocol::OnStartRequest(nsIChannel * aChannel, nsISupports *ctxt)
{
nsresult rv = NS_OK;
nsCOMPtr <nsIMsgMailNewsUrl> aMsgUrl = do_QueryInterface(ctxt, &rv);
if (NS_SUCCEEDED(rv) && aMsgUrl)
{
rv = aMsgUrl->SetUrlState(PR_TRUE, NS_OK);
if (m_loadGroup)
m_loadGroup->AddChannel(NS_STATIC_CAST(nsIChannel *, this), nsnull /* context isupports */);
}
// if we are set up as a channel, we should notify our channel listener that we are starting...
// so pass in ourself as the channel and not the underlying socket or file channel the protocol
// happens to be using
if (m_channelListener)
rv = m_channelListener->OnStartRequest(this, m_channelContext);
return rv;
}
// stop binding is a "notification" informing us that the stream associated with aURL is going away.
NS_IMETHODIMP nsMsgProtocol::OnStopRequest(nsIChannel * aChannel, nsISupports *ctxt, nsresult aStatus, const PRUnichar* aMsg)
{
nsresult rv = NS_OK;
// if we are set up as a channel, we should notify our channel listener that we are starting...
// so pass in ourself as the channel and not the underlying socket or file channel the protocol
// happens to be using
if (m_channelListener)
rv = m_channelListener->OnStopRequest(this, m_channelContext, aStatus, aMsg);
nsCOMPtr <nsIMsgMailNewsUrl> aMsgUrl = do_QueryInterface(ctxt, &rv);
if (NS_SUCCEEDED(rv) && aMsgUrl)
{
rv = aMsgUrl->SetUrlState(PR_FALSE, aStatus);
if (m_loadGroup)
m_loadGroup->RemoveChannel(NS_STATIC_CAST(nsIChannel *, this), nsnull, aStatus, nsnull);
}
// !NS_BINDING_ABORTED because we don't want to see an alert if the user
// cancelled the operation. also, we'll get here because we call Cancel()
// to force removal of the nsSocketTransport. see CloseSocket()
// bugs #30775 and #30648 relate to this
if (NS_FAILED(aStatus) && (aStatus != NS_BINDING_ABORTED)) {
NS_WITH_SERVICE(nsIPrompt, dialog, kNetSupportDialogCID, &rv);
if (NS_SUCCEEDED(rv) && dialog) {
// todo, put this into a string bundle
nsAutoString alertMsg("unknown error.");
switch (aStatus) {
case NS_ERROR_UNKNOWN_HOST:
// todo, put this into a string bundle
alertMsg = "Failed to connect to the server.";
break;
case NS_ERROR_CONNECTION_REFUSED:
// todo, put this into a string bundle
alertMsg = "Connection refused to the server.";
break;
case NS_ERROR_NET_TIMEOUT:
// todo, put this into a string bundle
alertMsg = "Connection to the server timed out.";
break;
default:
break;
}
dialog->Alert(alertMsg.GetUnicode());
}
}
return rv;
}
nsresult nsMsgProtocol::LoadUrl(nsIURI * aURL, nsISupports * aConsumer)
{
// okay now kick us off to the next state...
// our first state is a process state so drive the state machine...
nsresult rv = NS_OK;
nsCOMPtr <nsIMsgMailNewsUrl> aMsgUrl = do_QueryInterface(aURL);
if (NS_SUCCEEDED(rv))
{
rv = aMsgUrl->SetUrlState(PR_TRUE, NS_OK); // set the url as a url currently being run...
// if the url is given a stream consumer then we should use it to forward calls to...
if (!m_channelListener && aConsumer) // if we don't have a registered listener already
{
m_channelListener = do_QueryInterface(aConsumer);
if (!m_channelContext)
m_channelContext = do_QueryInterface(aURL);
}
if (!m_socketIsOpen)
{
nsCOMPtr<nsISupports> urlSupports = do_QueryInterface(aURL);
if (m_channel)
{
// XXX should these errors be returned?:
if (m_startPosition > 0) {
rv = m_channel->SetTransferOffset(m_startPosition);
NS_ASSERTION(NS_SUCCEEDED(rv), "SetTransferOffset failed");
}
rv = m_channel->SetTransferCount(m_readCount);
NS_ASSERTION(NS_SUCCEEDED(rv), "SetTransferCount failed");
// put us in a state where we are always notified of incoming data
rv = m_channel->AsyncRead(this /* stream observer */, urlSupports);
NS_ASSERTION(NS_SUCCEEDED(rv), "AsyncRead failed");
m_socketIsOpen = PR_TRUE; // mark the channel as open
}
} // if we got an event queue service
else // the connection is already open so we should begin processing our new url...
rv = ProcessProtocolState(aURL, nsnull, 0, 0);
}
return rv;
}
///////////////////////////////////////////////////////////////////////
// The rest of this file is mostly nsIChannel mumbo jumbo stuff
///////////////////////////////////////////////////////////////////////
nsresult nsMsgProtocol::SetUrl(nsIURI * aURL)
{
m_url = dont_QueryInterface(aURL);
return NS_OK;
}
NS_IMETHODIMP nsMsgProtocol::SetLoadGroup(nsILoadGroup * aLoadGroup)
{
m_loadGroup = dont_QueryInterface(aLoadGroup);
return NS_OK;
}
NS_IMETHODIMP nsMsgProtocol::GetOriginalURI(nsIURI* *aURI)
{
*aURI = m_originalUrl ? m_originalUrl : m_url;
NS_IF_ADDREF(*aURI);
return NS_OK;
}
NS_IMETHODIMP nsMsgProtocol::SetOriginalURI(nsIURI* aURI)
{
m_originalUrl = aURI;
return NS_OK;
}
NS_IMETHODIMP nsMsgProtocol::GetURI(nsIURI* *aURI)
{
*aURI = m_url;
NS_IF_ADDREF(*aURI);
return NS_OK;
}
NS_IMETHODIMP nsMsgProtocol::SetURI(nsIURI* aURI)
{
m_url = aURI;
return NS_OK;
}
NS_IMETHODIMP nsMsgProtocol::OpenInputStream(nsIInputStream **_retval)
{
NS_NOTREACHED("OpenInputStream");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsMsgProtocol::OpenOutputStream(nsIOutputStream **_retval)
{
NS_NOTREACHED("OpenOutputStream");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsMsgProtocol::AsyncOpen(nsIStreamObserver *observer, nsISupports* ctxt)
{
// we already know the content type...
observer->OnStartRequest(this, ctxt);
return NS_OK;
}
NS_IMETHODIMP nsMsgProtocol::AsyncRead(nsIStreamListener *listener, nsISupports *ctxt)
{
// set the stream listener and then load the url
m_channelContext = ctxt;
m_channelListener = listener;
// the following load group code is completely bogus....
nsresult rv = NS_OK;
if (m_loadGroup)
{
nsCOMPtr<nsILoadGroupListenerFactory> factory;
//
// Create a load group "proxy" listener...
//
rv = m_loadGroup->GetGroupListenerFactory(getter_AddRefs(factory));
if (factory)
{
nsCOMPtr<nsIStreamListener> newListener;
rv = factory->CreateLoadGroupListener(m_channelListener, getter_AddRefs(newListener));
if (NS_SUCCEEDED(rv))
m_channelListener = newListener;
}
} // if aLoadGroup
return LoadUrl(m_url, nsnull);
}
NS_IMETHODIMP nsMsgProtocol::AsyncWrite(nsIInputStream *fromStream, nsIStreamObserver *observer, nsISupports *ctxt)
{
NS_NOTREACHED("AsyncWrite");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsMsgProtocol::GetLoadAttributes(nsLoadFlags *aLoadAttributes)
{
*aLoadAttributes = mLoadAttributes;
return NS_OK;
}
NS_IMETHODIMP nsMsgProtocol::SetLoadAttributes(nsLoadFlags aLoadAttributes)
{
mLoadAttributes = aLoadAttributes;
return NS_OK; // don't fail when trying to set this
}
NS_IMETHODIMP nsMsgProtocol::GetContentType(char * *aContentType)
{
// as url dispatching matures, we'll be intelligent and actually start
// opening the url before specifying the content type. This will allow
// us to optimize the case where the message url actual refers to
// a part in the message that has a content type that is not message/rfc822
*aContentType = nsCRT::strdup("message/rfc822");
return NS_OK;
}
NS_IMETHODIMP nsMsgProtocol::SetContentType(const char *aContentType)
{
// XXX: Do not allow the content type to be changed (yet)
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP nsMsgProtocol::GetContentLength(PRInt32 * aContentLength)
{
*aContentLength = -1;
return NS_OK;
}
NS_IMETHODIMP
nsMsgProtocol::SetContentLength(PRInt32 aContentLength)
{
NS_NOTREACHED("SetContentLength");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsMsgProtocol::GetTransferOffset(PRUint32 *aTransferOffset)
{
NS_NOTREACHED("GetTransferOffset");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsMsgProtocol::SetTransferOffset(PRUint32 aTransferOffset)
{
NS_NOTREACHED("SetTransferOffset");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsMsgProtocol::GetTransferCount(PRInt32 *aTransferCount)
{
NS_NOTREACHED("GetTransferCount");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsMsgProtocol::SetTransferCount(PRInt32 aTransferCount)
{
NS_NOTREACHED("SetTransferCount");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsMsgProtocol::GetBufferSegmentSize(PRUint32 *aBufferSegmentSize)
{
NS_NOTREACHED("GetBufferSegmentSize");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsMsgProtocol::SetBufferSegmentSize(PRUint32 aBufferSegmentSize)
{
NS_NOTREACHED("SetBufferSegmentSize");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsMsgProtocol::GetBufferMaxSize(PRUint32 *aBufferMaxSize)
{
NS_NOTREACHED("GetBufferMaxSize");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsMsgProtocol::SetBufferMaxSize(PRUint32 aBufferMaxSize)
{
NS_NOTREACHED("SetBufferMaxSize");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsMsgProtocol::GetShouldCache(PRBool *aShouldCache)
{
NS_NOTREACHED("GetShouldCache");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsMsgProtocol::GetPipeliningAllowed(PRBool *aPipeliningAllowed)
{
*aPipeliningAllowed = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsMsgProtocol::SetPipeliningAllowed(PRBool aPipeliningAllowed)
{
NS_NOTREACHED("SetPipeliningAllowed");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsMsgProtocol::GetOwner(nsISupports * *aPrincipal)
{
*aPrincipal = nsnull;
return NS_OK;
}
NS_IMETHODIMP nsMsgProtocol::SetOwner(nsISupports * aPrincipal)
{
NS_NOTREACHED("SetOwner");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsMsgProtocol::GetLoadGroup(nsILoadGroup * *aLoadGroup)
{
*aLoadGroup = m_loadGroup;
NS_IF_ADDREF(*aLoadGroup);
return NS_OK;
}
NS_IMETHODIMP
nsMsgProtocol::GetNotificationCallbacks(nsIInterfaceRequestor* *aNotificationCallbacks)
{
NS_NOTREACHED("GetNotificationCallbacks");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsMsgProtocol::SetNotificationCallbacks(nsIInterfaceRequestor* aNotificationCallbacks)
{
return NS_OK; // don't fail when trying to set this
}
NS_IMETHODIMP
nsMsgProtocol::GetSecurityInfo(nsISupports * *aSecurityInfo)
{
*aSecurityInfo = nsnull;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// From nsIRequest
////////////////////////////////////////////////////////////////////////////////
NS_IMETHODIMP nsMsgProtocol::IsPending(PRBool *result)
{
*result = PR_TRUE;
return NS_OK;
}
NS_IMETHODIMP nsMsgProtocol::GetStatus(nsresult *status)
{
return m_channel->GetStatus(status);
}
NS_IMETHODIMP nsMsgProtocol::Cancel(nsresult status)
{
return m_channel->Cancel(status);
}
NS_IMETHODIMP nsMsgProtocol::Suspend()
{
NS_NOTREACHED("Suspend");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsMsgProtocol::Resume()
{
NS_NOTREACHED("Resume");
return NS_ERROR_NOT_IMPLEMENTED;
}
nsresult nsMsgProtocol::PostMessage(nsIURI* url, nsIFileSpec *fileSpec)
{
if (!url || !fileSpec) return NS_ERROR_NULL_POINTER;
#define POST_DATA_BUFFER_SIZE 2048
// mscott -- this function should be re-written to use the file url code
// so it can be asynch
nsFileSpec afileSpec;
fileSpec->GetFileSpec(&afileSpec);
nsInputFileStream * fileStream = new nsInputFileStream(afileSpec,
PR_RDONLY, 00700);
if (fileStream && fileStream->is_open())
{
PRInt32 amtInBuffer = 0;
PRBool lastLineWasComplete = PR_TRUE;
PRBool quoteLines = PR_TRUE; // it is always true but I'd like to
// generalize this function and then it
// might not be
char buffer[POST_DATA_BUFFER_SIZE];
if (quoteLines /* || add_crlf_to_line_endings */)
{
char *line;
char * b = buffer;
PRInt32 bsize = POST_DATA_BUFFER_SIZE;
amtInBuffer = 0;
do {
lastLineWasComplete = PR_TRUE;
PRInt32 L = 0;
if (fileStream->eof())
{
line = nsnull;
break;
}
if (!fileStream->readline(b, bsize-5))
lastLineWasComplete = PR_FALSE;
line = b;
L = PL_strlen(line);
/* escape periods only if quote_lines_p is set
*/
if (quoteLines && lastLineWasComplete && line[0] == '.')
{
/* This line begins with "." so we need to quote it
by adding another "." to the beginning of the line.
*/
PRInt32 i;
line[L+1] = 0;
for (i = L; i > 0; i--)
line[i] = line[i-1];
L++;
}
if (!lastLineWasComplete || (L > 1 && line[L-2] == CR &&
line[L-1] == LF))
{
/* already ok */
}
else if(L > 0 /* && (line[L-1] == LF || line[L-1] == CR) */)
{
/* only add the crlf if required
* we still need to do all the
* if comparisons here to know
* if the line was complete
*/
if(/* add_crlf_to_line_endings */ PR_TRUE)
{
/* Change newline to CRLF. */
line[L++] = CR;
line[L++] = LF;
line[L] = 0;
}
}
else if (L == 0 && !fileStream->eof()
/* && add_crlf_to_line_endings */)
{
// jt ** empty line; output CRLF
line[L++] = CR;
line[L++] = LF;
line[L] = 0;
}
bsize -= L;
b += L;
amtInBuffer += L;
// test hack by mscott. If our buffer is almost full, then
// send it off & reset ourselves
// to make more room.
if (bsize < 100) // i chose 100 arbitrarily.
{
if (*buffer)
SendData(url, buffer);
buffer[0] = '\0';
b = buffer; // reset buffer
bsize = POST_DATA_BUFFER_SIZE;
}
} while (line /* && bsize > 100 */);
}
SendData(url, buffer);
delete fileStream;
}
return NS_OK;
}
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