541 lines
15 KiB
C++
541 lines
15 KiB
C++
//+----------------------------------------------------------------------------
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//
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// File: disconn.cpp
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//
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// Module: CMDIAL32.DLL
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//
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// Synopsis: The main code path for terminating a connection.
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//
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// Copyright (c) 1998-1999 Microsoft Corporation
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//
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// Author: nickball Created 2/10/98
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//
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//+----------------------------------------------------------------------------
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#include "cmmaster.h"
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#include "actlist.h"
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#include "tunl_str.h"
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#include "conact_str.h"
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// The following block is copied from wtsapi32.h (we compile with
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// _WIN32_WINNT set to less than 5.01, so we can't get these values via a #include)
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//
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#include "WtsApi32.h"
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#define WTS_CONSOLE_CONNECT 0x1
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#define WTS_CONSOLE_DISCONNECT 0x2
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#define WTS_REMOTE_CONNECT 0x3
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#define WTS_REMOTE_DISCONNECT 0x4
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#define WTS_SESSION_LOGON 0x5
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#define WTS_SESSION_LOGOFF 0x6
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#define WTS_SESSION_LOCK 0x7
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#define WTS_SESSION_UNLOCK 0x8
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//+----------------------------------------------------------------------------
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//
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// Function: InFastUserSwitch
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//
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// Synopsis: Are we in a Fast User switch
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//
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// Argsuments: None
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//
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// Return: BOOL (TRUE if yes, FALSE if not)
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//
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// History: 18-Jul-2001 SumitC Created
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//
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//-----------------------------------------------------------------------------
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BOOL
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InFastUserSwitch()
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{
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BOOL fReturn = FALSE;
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if (OS_NT51)
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{
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HINSTANCE hInstLib = LoadLibraryExU(TEXT("WTSAPI32.DLL"), NULL, 0);
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if (hInstLib)
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{
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typedef BOOL (WINAPI *pfnWTSQuerySessionInformationW_TYPE) (HANDLE, DWORD, WTS_INFO_CLASS, LPWSTR*, DWORD*);
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typedef VOID (WINAPI *pfnWTSFreeMemory_TYPE) (PVOID);
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pfnWTSQuerySessionInformationW_TYPE pfnWTSQuerySessionInformationW;
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pfnWTSFreeMemory_TYPE pfnWTSFreeMemory;
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pfnWTSQuerySessionInformationW = (pfnWTSQuerySessionInformationW_TYPE) GetProcAddress(hInstLib, "WTSQuerySessionInformationW");
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pfnWTSFreeMemory = (pfnWTSFreeMemory_TYPE) GetProcAddress(hInstLib, "WTSFreeMemory");
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if (pfnWTSQuerySessionInformationW && pfnWTSFreeMemory)
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{
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DWORD cb;
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WTS_CONNECTSTATE_CLASS * pConnectState = NULL;
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CMTRACE(TEXT("Querying to see if we're in a FUS"));
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if (pfnWTSQuerySessionInformationW(WTS_CURRENT_SERVER_HANDLE,
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WTS_CURRENT_SESSION,
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WTSConnectState,
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(LPTSTR *)&pConnectState,
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&cb))
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{
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CMTRACE1(TEXT("Querying to see if we're in a FUS - succeeded, connstate is %d"), *pConnectState);
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if (WTSDisconnected == *pConnectState)
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{
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fReturn = TRUE;
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CMTRACE(TEXT("Querying to see if we're in a FUS - yes we are."));
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}
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pfnWTSFreeMemory(pConnectState);
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}
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}
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FreeLibrary(hInstLib);
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}
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}
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return fReturn;
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}
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//+----------------------------------------------------------------------------
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//
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// Function: CleanupDisconnect
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//
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// Synopsis: Helper function encapsulating release of resource allocated duri
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// ng disconnect.
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//
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// Arguments: ArgsStruct *pArgs - Ptr to global Args struct
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//
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// Returns: Nothing
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//
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// History: nickball Created 8/14/98
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//
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//+----------------------------------------------------------------------------
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void CleanupDisconnect(ArgsStruct *pArgs)
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{
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MYDBGASSERT(pArgs);
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if (NULL == pArgs)
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{
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return;
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}
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UnlinkFromRas(&pArgs->rlsRasLink);
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ReleaseIniObjects(pArgs);
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if (pArgs->pszRasPbk)
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{
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CmFree(pArgs->pszRasPbk);
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pArgs->pszRasPbk = NULL;
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}
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if (pArgs->pszCurrentAccessPoint)
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{
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CmFree(pArgs->pszCurrentAccessPoint);
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pArgs->pszCurrentAccessPoint = NULL;
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}
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if (pArgs->pszRasHiddenPbk)
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{
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CmFree(pArgs->pszRasHiddenPbk);
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pArgs->pszRasHiddenPbk = NULL;
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}
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if (pArgs->pszVpnFile)
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{
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CmFree(pArgs->pszVpnFile);
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pArgs->pszVpnFile = NULL;
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}
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CmFree(pArgs);
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}
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//+----------------------------------------------------------------------------
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//
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// Function: HangupNotifyCmMon
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//
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// Synopsis: Sends a hangup message to CmMon via WM_COPYDATA
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//
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// Arguments: CConnectionTable *pConnTable - Ptr to the Connection table.
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// LPCTSTR pszEntry - The name of the entry.
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//
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// Returns: DWORD - Failure code
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//
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// History: nickball Created 2/11/98
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//
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//+----------------------------------------------------------------------------
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DWORD HangupNotifyCmMon(CConnectionTable *pConnTable,
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LPCTSTR pszEntry)
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{
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MYDBGASSERT(pConnTable);
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MYDBGASSERT(pszEntry);
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if (NULL == pConnTable || NULL == pszEntry || 0 == pszEntry[0])
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{
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return ERROR_INVALID_PARAMETER;
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}
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//
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// Update CMMON if present
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//
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HWND hwndMon;
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if (SUCCEEDED(pConnTable->GetMonitorWnd(&hwndMon)) && IsWindow(hwndMon))
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{
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CMTRACE1(TEXT("HangupNotifyCmMon() - Notifying CMMON that we are disconnecting %s"), pszEntry);
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//
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// Stash the entry name in HangupInfo
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//
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CM_HANGUP_INFO HangupInfo;
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lstrcpyU(HangupInfo.szEntryName, pszEntry);
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//
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// Send Hangup info to CMMON via COPYDATA
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//
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COPYDATASTRUCT CopyData;
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CopyData.dwData = CMMON_HANGUP_INFO;
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CopyData.cbData = sizeof(CM_HANGUP_INFO);
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CopyData.lpData = (PVOID) &HangupInfo;
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SendMessageU(hwndMon, WM_COPYDATA, NULL, (LPARAM) &CopyData);
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}
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#ifdef DEBUG
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if (!hwndMon)
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{
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CMTRACE(TEXT("HangupNotifyCmMon() - CMMON hwnd is NULL"));
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}
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#endif
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return ERROR_SUCCESS;
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}
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//+----------------------------------------------------------------------------
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//
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// Function: DoDisconnect
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//
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// Synopsis: Encapulates initialization of pArgs with profile, service, etc.
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// Runs disconnect actions and terminates the connection.
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//
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// Arguments: LPCM_CONNECTION pConnection - Ptr to a CM_CONNECTION struct containing
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// connection info such as entry name and RAS handles.
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// BOOL fActions - Flag indicating that disconnect actions should be run
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//
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// Returns: DWORD - Failure code
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//
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// History: nickball Created Header 2/12/98
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//
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//+----------------------------------------------------------------------------
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DWORD DoDisconnect(LPCM_CONNECTION pConnection, BOOL fActions)
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{
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MYDBGASSERT(pConnection);
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if (NULL == pConnection)
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{
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return ERROR_INVALID_PARAMETER;
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}
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//
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// Allocate and initialize pArgs
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//
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ArgsStruct* pArgs = (ArgsStruct*) CmMalloc(sizeof(ArgsStruct));
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if (NULL == pArgs)
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{
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return ERROR_ALLOCATING_MEMORY;
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}
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//
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// Clear and init global args struct
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//
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HRESULT hrRet = InitArgsForDisconnect(pArgs, pConnection->fAllUser);
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if (FAILED(hrRet))
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{
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return HRESULT_CODE(hrRet);
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}
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//
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// Initialize the profile
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//
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hrRet = InitProfile(pArgs, pConnection->szEntry);
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if (FAILED(hrRet))
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{
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return HRESULT_CODE(hrRet);
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}
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//
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// Do we want tunneling? If this was a tunnel connection, then the connection table
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// will have a non-NULL value for the hTunnel field of that connection entry.
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//
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pArgs->fTunnelPrimary = (int) pArgs->piniService->GPPI(c_pszCmSection, c_pszCmEntryTunnelPrimary);
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pArgs->fTunnelReferences = (int) pArgs->piniService->GPPI(c_pszCmSection, c_pszCmEntryTunnelReferences);
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pArgs->fUseTunneling = pConnection->hTunnel ? TRUE : FALSE;
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//
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// Determine our connect type
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//
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GetConnectType(pArgs);
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//
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// Initialize the path to the phonebook if this is NT5 so that disconnect
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// actions can use it if they want to. Note that the temporary phonebook
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// has already been deleted at this point so we will return NULL so that
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// it doesn't confuse the disconnect actions.
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//
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if (OS_NT5)
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{
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pArgs->pszRasPbk = GetRasPbkFromNT5ProfilePath(pArgs->piniProfile->GetFile());
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}
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//
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// Initialize logging and log the disconnect event.
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//
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(VOID) InitLogging(pArgs, pConnection->szEntry, FALSE); // FALSE => no banner
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// ignore return value
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TCHAR szTmp[MAX_PATH];
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MYVERIFY(GetModuleFileNameU(NULL, szTmp, MAX_PATH));
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pArgs->Log.Log(DISCONNECT_EVENT, szTmp);
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//
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// If we are in a Fast User Switch, set the flag so that we can skip customactions
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// that might block the disconnect (by bringing up UI etc)
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//
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pArgs->fInFastUserSwitch = InFastUserSwitch();
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//
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// If we are connected, run Disconnect Actions before we actually terminate
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//
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if (fActions)
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{
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CActionList DisconnectActList;
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DisconnectActList.Append(pArgs->piniService, c_pszCmSectionOnDisconnect);
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DisconnectActList.RunAccordType(NULL, pArgs, FALSE);
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}
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//
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// Initialize Data and links for Hangup
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//
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if (FALSE == LinkToRas(&pArgs->rlsRasLink))
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{
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MYDBGASSERT(FALSE);
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return ERROR_NOT_READY;
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}
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//
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// Linkage is good, hangup
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//
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if (pArgs->rlsRasLink.pfnHangUp)
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{
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//
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// Test the connection status of each connection handle. If not
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// connected, then there is no reason for us to call Hangup
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//
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RASCONNSTATUS rcs;
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if (pConnection->hTunnel)
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{
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ZeroMemory(&rcs,sizeof(rcs));
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rcs.dwSize = sizeof(rcs);
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if (ERROR_SUCCESS == pArgs->rlsRasLink.pfnGetConnectStatus(pConnection->hTunnel,&rcs) &&
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rcs.rasconnstate == RASCS_Connected)
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{
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if (IsLogonAsSystem())
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{
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//
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// Don't want to bring up any UI
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//
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DoRasHangup(&pArgs->rlsRasLink, pConnection->hTunnel);
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}
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else
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{
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MYVERIFY(ERROR_SUCCESS == DoRasHangup(&pArgs->rlsRasLink, pConnection->hTunnel));
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}
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}
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}
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if (pConnection->hDial)
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{
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ZeroMemory(&rcs,sizeof(rcs));
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rcs.dwSize = sizeof(rcs);
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if (ERROR_SUCCESS == pArgs->rlsRasLink.pfnGetConnectStatus(pConnection->hDial,&rcs) &&
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rcs.rasconnstate == RASCS_Connected)
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{
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if (IsLogonAsSystem())
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{
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//
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// Don't want to bring up any UI
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//
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DoRasHangup(&pArgs->rlsRasLink, pConnection->hDial);
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}
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else
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{
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DWORD dwRet = DoRasHangup(&pArgs->rlsRasLink, pConnection->hDial);
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if (ERROR_SUCCESS != dwRet)
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{
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CMTRACE1(TEXT("DoDisconnect: DoRasHangup failed with error code with %d"), dwRet);
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}
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}
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}
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}
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}
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//
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// Un-initialize logging
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//
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(VOID) pArgs->Log.DeInit();
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// ignore return value
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//
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// Cleanup linkage and memory
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//
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CleanupDisconnect(pArgs);
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return ERROR_SUCCESS;
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}
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//+----------------------------------------------------------------------------
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//
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// Function: Disconnect
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//
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// Synopsis: Disconnects the connection with the name pszEntry.
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//
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// Arguments: CConnectionTable *pConnTable - Ptr to connection table
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// LPCM_CONNECTION pConnection - The current table data for the entry.
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// BOOL fIgnoreRefCount - Flag to override ref count
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// BOOL fPersist - Flag indicating that entry should be persistent
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//
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// Returns: DWORD - Failure code
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//
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// History: nickball Created 2/11/98
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//
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//+----------------------------------------------------------------------------
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DWORD Disconnect(CConnectionTable *pConnTable, LPCM_CONNECTION pConnection, BOOL fIgnoreRefCount, BOOL fPersist)
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{
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MYDBGASSERT(pConnection);
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MYDBGASSERT(pConnTable);
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CMTRACE(TEXT("Disconnect()"));
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#ifdef DEBUG
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IsLogonAsSystem(); // Traces user name
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#endif
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if (NULL == pConnection || NULL == pConnTable)
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{
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return ERROR_INVALID_PARAMETER;
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}
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// MYDBGASSERT(!(fIgnoreRefCount && fPersist)); // mutually exclusive flags
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MYDBGASSERT(CM_CONNECTING != pConnection->CmState);
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if (!fIgnoreRefCount)
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{
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//
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// The hangup is not forced, check usage
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//
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if (pConnection->dwUsage > 1)
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{
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//
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// As long as fPersist is false, adjust the usage count
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//
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if (!fPersist)
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{
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pConnTable->RemoveEntry(pConnection->szEntry);
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}
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return ERROR_SUCCESS;
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}
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else
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{
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//
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// If we are already disconnecting, just succeed
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//
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if (CM_DISCONNECTING == pConnection->CmState)
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{
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return ERROR_SUCCESS;
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}
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}
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}
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//
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// Looks like we are comitted to getting to a usage of zero, tell CMMON
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// to stop monitoring this connection unless we are in persist state.
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//
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if (!fPersist)
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{
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HangupNotifyCmMon(pConnTable, pConnection->szEntry);
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}
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LRESULT lRes = ERROR_SUCCESS;
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//
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// Usage is down <= 1, or being ignored. If we are in reconnect prompt
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// state, then there is nothing to disconnect so don't call hangup.
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//
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if (CM_RECONNECTPROMPT != pConnection->CmState)
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{
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//
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// We are committed to a real disconnect, so set the entry
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// to the disconnecting state while we hangup.
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//
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BOOL fActions = (CM_CONNECTED == pConnection->CmState);
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pConnTable->SetDisconnecting(pConnection->szEntry);
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lRes = DoDisconnect(pConnection, fActions);
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//
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// If persisting, just set the state to reconnect prompt
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//
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if (fPersist)
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{
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//
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// Set entry to limbo state of reconnect prompt
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//
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pConnTable->SetPrompting(pConnection->szEntry);
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return (DWORD)lRes;
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}
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}
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//
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// If forced connect, removed entry completely
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//
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if (fIgnoreRefCount)
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{
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pConnTable->ClearEntry(pConnection->szEntry);
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}
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else
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{
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pConnTable->RemoveEntry(pConnection->szEntry);
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}
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return (DWORD)lRes;
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}
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