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Total C++ 2
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chatsrv.pak
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SRVRDOC.CPP
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C/C++ Source or Header
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1997-05-06
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6KB
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// srvrdoc.cpp : implementation of the CServerDoc class
//
// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (C) 1992-1995 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.
#include "stdafx.h"
#include "chatsrvr.h"
#include "srvrdoc.h"
#include "srvrvw.h"
#include "msg.h"
#include "dialogs.h"
#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CServerDoc
IMPLEMENT_DYNCREATE(CServerDoc, CDocument)
BEGIN_MESSAGE_MAP(CServerDoc, CDocument)
//{{AFX_MSG_MAP(CServerDoc)
//}}AFX_MSG_MAP
ON_UPDATE_COMMAND_UI(ID_MESSAGES, OnUpdateMessages)
ON_UPDATE_COMMAND_UI(ID_CONNECTIONS, OnUpdateConnections)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CServerDoc construction/destruction
CServerDoc::CServerDoc()
{
m_pSocket = NULL;
}
CServerDoc::~CServerDoc()
{
delete m_pSocket;
}
BOOL CServerDoc::OnNewDocument()
{
if (!CDocument::OnNewDocument())
return FALSE;
CDiscussionDlg Dialog;
if (Dialog.DoModal() == IDOK)
{
m_pSocket = new CListeningSocket(this);
if (m_pSocket->Create(Dialog.m_nPort+700))
{
if (m_pSocket->Listen())
return TRUE;
}
}
return FALSE;
}
void CServerDoc::DeleteContents()
{
delete m_pSocket;
m_pSocket = NULL;
CString temp;
if (temp.LoadString(IDS_SERVERSHUTDOWN))
m_msgList.AddTail(temp);
while(!m_connectionList.IsEmpty())
{
CClientSocket* pSocket = (CClientSocket*)m_connectionList.RemoveHead();
CMsg* pMsg = AssembleMsg(pSocket);
pMsg->m_bClose = TRUE;
SendMsg(pSocket, pMsg);
if (!pSocket->IsAborted())
{
pSocket->ShutDown();
BYTE Buffer[50];
while (pSocket->Receive(Buffer,50) > 0);
delete pSocket;
}
}
m_msgList.RemoveAll();
if (!m_viewList.IsEmpty())
((CEditView*)m_viewList.GetHead())->SetWindowText(_T(""));
CDocument::DeleteContents();
}
/////////////////////////////////////////////////////////////////////////////
// CServerDoc serialization
void CServerDoc::Serialize(CArchive& ar)
{
if (ar.IsStoring())
{
// CEditView contains an edit control which handles all serialization
((CEditView*)m_viewList.GetHead())->SerializeRaw(ar);
}
}
/////////////////////////////////////////////////////////////////////////////
// CServerDoc diagnostics
#ifdef _DEBUG
void CServerDoc::AssertValid() const
{
CDocument::AssertValid();
}
void CServerDoc::Dump(CDumpContext& dc) const
{
CDocument::Dump(dc);
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CServerDoc Operations
void CServerDoc::UpdateClients()
{
for(POSITION pos = m_connectionList.GetHeadPosition(); pos != NULL;)
{
CClientSocket* pSocket = (CClientSocket*)m_connectionList.GetNext(pos);
CMsg* pMsg = AssembleMsg(pSocket);
if (pMsg != NULL)
SendMsg(pSocket, pMsg);
}
}
void CServerDoc::ProcessPendingAccept()
{
CClientSocket* pSocket = new CClientSocket(this);
if (m_pSocket->Accept(*pSocket))
{
pSocket->Init();
m_connectionList.AddTail(pSocket);
}
else
delete pSocket;
}
void CServerDoc::ProcessPendingRead(CClientSocket* pSocket)
{
do
{
CMsg* pMsg = ReadMsg(pSocket);
if (pMsg->m_bClose)
{
CloseSocket(pSocket);
break;
}
}
while (!pSocket->m_pArchiveIn->IsBufferEmpty());
UpdateClients();
}
CMsg* CServerDoc::AssembleMsg(CClientSocket* pSocket)
{
static CMsg msg;
msg.Init();
if (pSocket->m_nMsgCount >= m_msgList.GetCount())
return NULL;
for (POSITION pos1 = m_msgList.FindIndex(pSocket->m_nMsgCount); pos1 != NULL;)
{
CString temp = m_msgList.GetNext(pos1);
msg.m_msgList.AddTail(temp);
}
pSocket->m_nMsgCount = m_msgList.GetCount();
return &msg;
}
CMsg* CServerDoc::ReadMsg(CClientSocket* pSocket)
{
static CMsg msg;
TRY
{
pSocket->ReceiveMsg(&msg);
Message(msg.m_strText);
m_msgList.AddTail(msg.m_strText);
}
CATCH(CFileException, e)
{
CString strTemp;
if (strTemp.LoadString(IDS_READERROR))
Message(strTemp);
msg.m_bClose = TRUE;
pSocket->Abort();
}
END_CATCH
return &msg;
}
void CServerDoc::SendMsg(CClientSocket* pSocket, CMsg* pMsg)
{
TRY
{
pSocket->SendMsg(pMsg);
}
CATCH(CFileException, e)
{
pSocket->Abort();
CString strTemp;
if (strTemp.LoadString(IDS_SENDERROR))
Message(strTemp);
}
END_CATCH
}
void CServerDoc::CloseSocket(CClientSocket* pSocket)
{
pSocket->Close();
POSITION pos,temp;
for(pos = m_connectionList.GetHeadPosition(); pos != NULL;)
{
temp = pos;
CClientSocket* pSock = (CClientSocket*)m_connectionList.GetNext(pos);
if (pSock == pSocket)
{
m_connectionList.RemoveAt(temp);
break;
}
}
delete pSocket;
}
void CServerDoc::Message(LPCTSTR lpszMessage)
{
((CServerView*)m_viewList.GetHead())->Message(lpszMessage);
}
/////////////////////////////////////////////////////////////////////////////
// CServerDoc Handlers
void CServerDoc::OnUpdateMessages(CCmdUI* pCmdUI)
{
pCmdUI->Enable(TRUE);
CString strFmt;
if (strFmt.LoadString(IDS_MESSAGESFMT))
{
CString strTemp;
wsprintf(strTemp.GetBuffer(50),strFmt,m_msgList.GetCount());
strTemp.ReleaseBuffer();
pCmdUI->SetText(strTemp);
}
}
void CServerDoc::OnUpdateConnections(CCmdUI* pCmdUI)
{
pCmdUI->Enable(TRUE);
CString strFmt;
if (strFmt.LoadString(IDS_CONNECTIONSFMT))
{
CString strTemp;
wsprintf(strTemp.GetBuffer(50),strFmt,m_connectionList.GetCount());
strTemp.ReleaseBuffer();
pCmdUI->SetText(strTemp);
}
}