windows-nt/Source/XPSP1/NT/termsrv/admtools/winutils/tsadmin/domain.cpp

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2020-09-26 03:20:57 -05:00
//Copyright (c) 1998 - 1999 Microsoft Corporation
/*******************************************************************************
*
* domain.cpp
*
* implementation of the CDomain class
*
*
*******************************************************************************/
#include "stdafx.h"
#include "winadmin.h"
#include "admindoc.h"
#include "dialogs.h"
#include <malloc.h> // for alloca used by Unicode conversion macros
#include <mfc42\afxconv.h> // for Unicode conversion macros
static int _convert;
#include <winsta.h>
#include <regapi.h>
#include "..\..\inc\utilsub.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define MIN_MAJOR_VERSION 4
#define MIN_MINOR_VERSION 0
//////////////////////////////////////////////////////////////////////////////////////////
//
// CDomain Member Functions
//
//////////////////////////////////////////////////////////////////////////////////////////
CDomain::CDomain(TCHAR *name)
{
m_Flags = 0;
m_PreviousState = DS_NONE;
m_State = DS_NONE;
m_hTreeItem = NULL;
wcscpy(m_Name, name);
m_pBackgroundThread = NULL;
}
CDomain::~CDomain()
{
if(m_State == DS_ENUMERATING) StopEnumerating();
}
void CDomain::SetState(DOMAIN_STATE state)
{
// remember the previous state
m_PreviousState = m_State;
m_State = state;
CWinAdminDoc *pDoc = (CWinAdminDoc*)((CWinAdminApp*)AfxGetApp())->GetDocument();
CFrameWnd *p = (CFrameWnd*)pDoc->GetMainWnd();
if(p && ::IsWindow(p->GetSafeHwnd())) {
p->SendMessage(WM_ADMIN_UPDATE_DOMAIN, 0, (LPARAM)this);
}
}
BOOL CDomain::StartEnumerating()
{
BOOL bResult = FALSE;
LockBackgroundThread();
if( m_State == DS_ENUMERATING || m_State == DS_STOPPED_ENUMERATING )
{
UnlockBackgroundThread( );
return FALSE;
}
// Fire off the background thread for this domain
if( m_pBackgroundThread == NULL )
{
DomainProcInfo *pProcInfo = new DomainProcInfo;
if( pProcInfo != NULL )
{
pProcInfo->pDomain = this;
pProcInfo->pDoc = (CWinAdminDoc*)((CWinAdminApp*)AfxGetApp())->GetDocument();
m_BackgroundContinue = TRUE;
m_pBackgroundThread = AfxBeginThread((AFX_THREADPROC)CDomain::BackgroundThreadProc,
pProcInfo,
0,
CREATE_SUSPENDED,
NULL );
if( m_pBackgroundThread == NULL )
{
ODS( L"CDomain!StartEnumerating AfxBeginThread failed running low on resources\n" );
delete pProcInfo;
return FALSE;
}
m_pBackgroundThread->m_bAutoDelete = FALSE;
if (m_pBackgroundThread->ResumeThread() <= 1)
{
bResult = TRUE;
}
}
}
UnlockBackgroundThread();
return TRUE;
}
void CDomain::StopEnumerating()
{
// Tell the background thread to terminate and
// wait for it to do so.
LockBackgroundThread();
if(m_pBackgroundThread)
{
CWinThread *pBackgroundThread = m_pBackgroundThread;
HANDLE hThread = m_pBackgroundThread->m_hThread;
// Clear the pointer before releasing the lock
m_pBackgroundThread = NULL;
ClearBackgroundContinue( );
UnlockBackgroundThread();
// Wait for the thread's death
if(WaitForSingleObject(hThread, 1000) == WAIT_TIMEOUT)
{
TerminateThread(hThread, 0);
}
WaitForSingleObject(hThread, INFINITE);
// delete the CWinThread object
delete pBackgroundThread;
}
else
{
UnlockBackgroundThread();
}
SetState(DS_STOPPED_ENUMERATING);
DBGMSG( L"%s stopped enumerating\n" , GetName( ) );
}
USHORT Buflength(LPWSTR buf)
{
LPWSTR p = buf;
USHORT length = 0;
while(*p) {
USHORT plength = wcslen(p) + 1;
length += plength;
p += plength;
}
return length;
} // end Buflength
LPWSTR ConcatenateBuffers(LPWSTR buf1, LPWSTR buf2)
{
// Make sure both buffer pointers are valid
if(!buf1 && !buf2) return NULL;
if(buf1 && !buf2) return buf1;
if(!buf1 && buf2) return buf2;
// figure out how big a buffer we'll need
USHORT buf1Length = Buflength(buf1);
USHORT buf2Length = Buflength(buf2);
USHORT bufsize = buf1Length + buf2Length + 1;
// allocate a buffer
LPWSTR pBuffer = (LPWSTR)LocalAlloc(LMEM_FIXED | LMEM_ZEROINIT, bufsize * sizeof(WCHAR));
// If we can't allocate a buffer, free the second buffer and
// return the pointer to the first of the two buffers
if(!pBuffer) {
LocalFree(buf2);
return(buf1);
}
LPWSTR p = pBuffer;
// copy the contents of the first buffer into the new buffer
memcpy((char*)p, (char*)buf1, buf1Length * sizeof(WCHAR));
p += buf1Length;
// copy the contents of the second buffer into the new buffer
memcpy((char*)p, (char*)buf2, buf2Length * sizeof(WCHAR));
LocalFree(buf1);
LocalFree(buf2);
return pBuffer;
} // end ConcatenateBuffers
void CDomain::CreateServers(LPWSTR pBuffer, LPVOID _pDoc)
{
CWinAdminDoc *pDoc = (CWinAdminDoc*)_pDoc;
CWinAdminApp *pApp = (CWinAdminApp*)AfxGetApp();
LPWSTR pTemp = pBuffer;
// Loop through all the WinFrame servers that we found
while(*pTemp)
{
// The server's name is in pTemp
// Find the server in our list
CServer *pServer = pDoc->FindServerByName(pTemp);
// If the server is in our list, set the flag to say we found it
if(pServer)
{
pServer->SetBackgroundFound();
if( pServer->GetTreeItem( ) == NULL )
{
CFrameWnd *p = (CFrameWnd*)pDoc->GetMainWnd();
p->SendMessage(WM_ADMIN_ADD_SERVER, ( WPARAM )TVI_SORT, (LPARAM)pServer);
}
}
else
{
// We don't want to add the current Server again
if( lstrcmpi( pTemp , pApp->GetCurrentServerName() ) )
{
// Create a new server object
CServer *pNewServer = new CServer(this, pTemp, FALSE, pDoc->ShouldConnect(pTemp));
if(pNewServer != NULL )
{
// Add the server object to our linked list
pDoc->AddServer(pNewServer);
// Set the flag to say we found it
pNewServer->SetBackgroundFound();
CFrameWnd *p = (CFrameWnd*)pDoc->GetMainWnd();
if(p && ::IsWindow(p->GetSafeHwnd()))
{
p->SendMessage(WM_ADMIN_ADD_SERVER, ( WPARAM )TVI_SORT, (LPARAM)pNewServer);
}
}
}
}
// Go to the next server in the buffer
pTemp += (wcslen(pTemp) + 1);
} // end while (*pTemp)
}
/////////////////////////////////////////////////////////////////////////////
// CDomain::BackgroundThreadProc
//
// Static member function for background thread
// Looks for servers appearing and disappearing
// Called with AfxBeginThread
// Thread terminates when function returns
//
UINT CDomain::BackgroundThreadProc(LPVOID bg)
{
// We need a pointer to the document so we can make
// calls to member functions
CWinAdminDoc *pDoc = (CWinAdminDoc*)((DomainProcInfo*)bg)->pDoc;
CDomain *pDomain = ((DomainProcInfo*)bg)->pDomain;
delete bg;
CWinAdminApp *pApp = (CWinAdminApp*)AfxGetApp();
// We want to keep track of whether or not we've enumerated - so
// that we can update the tree when we're done
BOOL bNotified = FALSE;
// We can't send messages to the view until they're ready
// v-nicbd RESOLVED In case we are exiting tsadmin, we are waiting uselessly here
// - 500ms lapsed is negligible in UI
while( !pDoc->AreAllViewsReady() )
{
Sleep(500);
}
// Don't do this until the views are ready!
pDomain->SetState(DS_INITIAL_ENUMERATION);
// If there is an extension DLL loaded, we will allow it to enumerate
// additional servers
LPFNEXENUMERATEPROC EnumerateProc = pApp->GetExtEnumerationProc();
// The first time we enumerate servers, we want the CServer object
// to put the server in the views when it has enough info.
// On subsequent enumerations, we will add the server to the views
// here.
BOOL bSubsequent = FALSE;
while(pDomain->ShouldBackgroundContinue())
{
BOOL Enumerated = FALSE;
CObList TempServerList;
DBGMSGx( L"CDomain!BackgroundThreadProc %s still going thread %d\n" , pDomain->GetName( ) , GetCurrentThreadId( ) );
// Loop through all the servers and turn off the flag
// that tells this thread that he found it on this pass
pDoc->LockServerList();
CObList *pServerList = pDoc->GetServerList();
POSITION pos = pServerList->GetHeadPosition();
while(pos)
{
POSITION pos2 = pos;
CServer *pServer = (CServer*)pServerList->GetNext(pos);
if(pServer->GetDomain() == pDomain)
{
pServer->ClearBackgroundFound();
// We want to remove a server if we could see it
// the last time we enumerated servers
// NOTE: This should not cause any problems
// The views should no longer have items pointing
// to this server at this point
//
// Move the server object to a temporary list.
// This is so that we can unlock the server list before
// we call the destructor on a CServer object since the
// destructor will end up calling SetState() which does
// a SendMessage. This is not good to do with the list
// locked.
if(pServer->IsServerInactive() && !pServer->IsCurrentServer())
{
pServer = (CServer*)pServerList->GetAt(pos2);
// Remove it from the server list
DBGMSG( L"Adding %s to temp list to destroy\n" , pServer->GetName( ) );
pServerList->RemoveAt(pos2);
// Add it to our temporary list
TempServerList.AddTail(pServer);
}
}
}
pDoc->UnlockServerList();
// do a first loop to signal the servers' background threads that they must stop
pos = TempServerList.GetHeadPosition();
while(pos)
{
CServer *pServer = (CServer*)TempServerList.GetNext(pos);
DBGMSG( L"Clearing %s backgrnd cont\n", pServer->GetName() );
pServer->ClearBackgroundContinue();
}
// do a second loop to disconnect and delete the servers
pos = TempServerList.GetHeadPosition();
while(pos)
{
CServer *pServer = (CServer*)TempServerList.GetNext(pos);
DBGMSG( L"Disconnecting and deleteing %s now!!!\n", pServer->GetName( ) );
pServer->Disconnect( );
delete pServer;
ODS( L"gone.\n" );
}
TempServerList.RemoveAll();
// Make sure we don't have to quit
if(!pDomain->ShouldBackgroundContinue())
{
return 0;
}
// Get all the Servers now (we already got the current server)
LPWSTR pBuffer = NULL;
// Find all WinFrame servers in the domain
pBuffer = pDomain->EnumHydraServers(/*pDomain->GetName(),*/ MIN_MAJOR_VERSION, MIN_MINOR_VERSION);
// Make sure we don't have to quit
if(!pDomain->ShouldBackgroundContinue())
{
if(pBuffer) LocalFree(pBuffer);
return 0;
}
// Make sure we don't have to quit
if(!pDomain->ShouldBackgroundContinue())
{
if(pBuffer) LocalFree(pBuffer);
return 0;
}
if(pBuffer) {
Enumerated = TRUE;
pDomain->CreateServers(pBuffer, (LPVOID)pDoc);
LocalFree(pBuffer);
} // end if(pBuffer)
// Make sure we don't have to quit
if(!pDomain->ShouldBackgroundContinue()) return 0;
if(!bNotified) {
pDomain->SetState(DS_ENUMERATING);
bNotified = TRUE;
}
// If there is an extension DLL loaded, allow it to enumerate additional servers
LPWSTR pExtBuffer = NULL;
if(EnumerateProc) {
pExtBuffer = (*EnumerateProc)(pDomain->GetName());
}
// If the extension DLL found servers, concatenate the two buffers
// The ConcatenateBuffers function will delete both buffers and return a
// pointer to the new buffer
if(pExtBuffer) {
Enumerated = TRUE;
pDomain->CreateServers(pExtBuffer, (LPVOID)pDoc);
LocalFree(pExtBuffer);
}
// Make sure we don't have to quit
if(!pDomain->ShouldBackgroundContinue())
{
return 0;
}
if(Enumerated)
{
// Mark the current server as found
CServer *pCurrentServer = pDoc->GetCurrentServer();
if(pCurrentServer) pCurrentServer->SetBackgroundFound();
// Go through the list of servers and see which ones don't have
// the flag set saying that we found it
CObList TempList;
pDoc->LockServerList();
pServerList = pDoc->GetServerList();
POSITION pos = pServerList->GetHeadPosition();
while(pos)
{
CServer *pServer = (CServer*)pServerList->GetNext(pos);
if(pServer->GetDomain() == pDomain)
{
// we check to see if this server has been initially inserted to our server list
// manually. If so we don't want it inserted to our templist for deletion.
if( !pServer->IsManualFind() &&
( !pServer->IsBackgroundFound() ||
pServer->HasLostConnection() ||
!pServer->IsServerSane() ) )
{
DBGMSG( L"Removing %s background not found or lost connection\n" , pServer->GetName( ) );
// Set the flag to say that this server is inactive
pServer->SetServerInactive();
// Add it to our temporary list
TempList.AddTail(pServer);
}
}
}
pDoc->UnlockServerList();
pos = TempList.GetHeadPosition();
CFrameWnd *p = (CFrameWnd*)pDoc->GetMainWnd();
while(pos)
{
CServer *pServer = (CServer*)TempList.GetNext(pos);
// Send a message to the mainframe to remove the server
if(p && ::IsWindow(p->GetSafeHwnd()))
{
DBGMSG( L"CDomain!Bkthrd removing %s temped threads from treeview & view\n" , pServer->GetName( ) );
// clean up old node
if( pServer->GetTreeItemFromFav( ) != NULL )
{
// we cannot keep a favnode around if a server node is being deleted
// massive AV's will occurr. So a quick fix is to remove the favnode
// if it exists and create a new server node and mark it as manually
// found. This will prevent this server node from being removed in
// case NetEnumServer fails to pick up this server
p->SendMessage( WM_ADMIN_REMOVESERVERFROMFAV , TRUE , ( LPARAM )pServer );
CServer *ptServer = new CServer( pDomain , pServer->GetName( ) , FALSE , FALSE );
if( ptServer != NULL )
{
ptServer->SetManualFind( );
pDoc->AddServer(ptServer);
p->SendMessage(WM_ADMIN_ADDSERVERTOFAV , 0 , (LPARAM)ptServer);
}
}
p->SendMessage(WM_ADMIN_REMOVE_SERVER, TRUE, (LPARAM)pServer);
}
}
TempList.RemoveAll();
} // end if(Enumerated)
// We don't want to do this constantly, it eats up processor cycles to enumerate servers
// so we'll now let the user refresh these servers manually
// Document destructor will signal the event to wake us up if he
// wants us to quit
pDomain->m_WakeUpEvent.Lock( INFINITE );
bSubsequent = TRUE;
} // end while(1)
return 0;
} // end CDomain::BackgroundThreadProc
/*******************************************************************************
*
* EnumHydraServers - Hydra helper function (taken from utildll and modified
* to be used along with a version check.
*
* Enumerate the Hydra servers on the network by Domain
* Returns all the servers whose version is >= the version passed.
*
* ENTRY:
* pDomain (input)
* Specifies the domain to enumerate; NULL for current domain.
* verMajor (input)
* specifies the Major version to check for.
* verMinor (input)
* specifies the minor version to check for.
*
* EXIT:
* (LPTSTR) Points to LocalAlloced buffer containing results of the
* enumeration, in multi-string format, if sucessful; NULL if
* error. The caller must perform a LocalFree of this buffer
* when done. If error (NULL), the error code is set for
* retrieval by GetLastError();
*
******************************************************************************/
LPWSTR CDomain::EnumHydraServers( /*LPWSTR pDomain,*/ DWORD verMajor, DWORD verMinor )
{
PSERVER_INFO_101 pInfo = NULL;
DWORD dwByteCount, dwIndex, TotalEntries;
DWORD AvailCount = 0;
LPWSTR pTemp, pBuffer = NULL;
/*
* Enumerate all WF servers on the specified domain.
*/
if ( NetServerEnum ( NULL,
101,
(LPBYTE *)&pInfo,
(DWORD) -1,
&AvailCount,
&TotalEntries,
SV_TYPE_TERMINALSERVER,
m_Name, /*pDomain,*/
NULL ) ||
!AvailCount )
goto done;
//
// Traverse list of the servers that match the major and minor versions'criteria
// and calculate the total byte count for list of
// servers that will be returned.
//
for( dwByteCount = dwIndex = 0; dwIndex < AvailCount; dwIndex++ )
{
if( ((pInfo[dwIndex].sv101_version_major & MAJOR_VERSION_MASK) >=
verMajor) && (pInfo[dwIndex].sv101_version_minor >= verMinor) )
{
dwByteCount += (wcslen(pInfo[dwIndex].sv101_name) + 1) * 2;
}
}
dwByteCount += 2; // for ending null
/*
* Allocate memory.
*/
if( (pBuffer = (LPWSTR)LocalAlloc(LPTR, dwByteCount)) == NULL )
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
goto done;
}
/*
* Traverse list again and copy servers to buffer.
*/
for( pTemp = pBuffer, dwIndex = 0; dwIndex < AvailCount; dwIndex++ )
{
if( ((pInfo[dwIndex].sv101_version_major & MAJOR_VERSION_MASK) >=
verMajor) && (pInfo[dwIndex].sv101_version_minor >= verMinor) )
{
// MS Bug 1821
if ( wcslen(pInfo[dwIndex].sv101_name) != 0 )
{
wcscpy(pTemp, pInfo[dwIndex].sv101_name);
pTemp += (wcslen(pInfo[dwIndex].sv101_name) + 1);
}
}
}
*pTemp = L'\0'; // ending null
done:
if( AvailCount && pInfo )
{
NetApiBufferFree( pInfo );
}
return(pBuffer);
} // end CDomain::EnumHydraServers
/////////////////////////////////////////////////////////////////////////////
// CDomain::DisconnectAllServers
//
// Disconnect from all servers in this Domain
//
void CDomain::DisconnectAllServers()
{
CWinAdminDoc *pDoc = (CWinAdminDoc*)((CWinAdminApp*)AfxGetApp())->GetDocument();
CObList *pServerList = pDoc->GetServerList();
CString AString;
CDialog dlgWait;
dlgWait.Create(IDD_SHUTDOWN, NULL);
pDoc->LockServerList();
ODS( L"TSADMIN:CDomain::DisconnectAllServers about to disconnect all connected servers\n" );
// Do a first loop to signal the server background threads that they must stop
POSITION pos = pServerList->GetHeadPosition();
while(pos) {
// Get a pointer to the server
CServer *pServer = (CServer*)pServerList->GetNext(pos);
// If this Server is in the domain and connected, tell the server background thread to stop
if(pServer->GetDomain() == this
&& pServer->GetState() != SS_NOT_CONNECTED) {
pServer->ClearBackgroundContinue();
}
}
// do a second loop to disconnect the servers
pos = pServerList->GetHeadPosition();
while(pos) {
// Get a pointer to the server
CServer *pServer = (CServer*)pServerList->GetNext(pos);
// If this Server is in the domain and connected, disconnect from it
if ((pServer->GetDomain() == this) && (pServer->GetState() != SS_NOT_CONNECTED)) {
AString.Format(IDS_DISCONNECTING, pServer->GetName());
dlgWait.SetDlgItemText(IDC_SHUTDOWN_MSG, AString);
// Tell the server to connect
pServer->Disconnect();
}
}
//
// tell domain not to connect to any more servers
//
pDoc->UnlockServerList();
dlgWait.PostMessage(WM_CLOSE);
} // end CDomain::DisconnectAllServers
/////////////////////////////////////////////////////////////////////////////
// CDomain::ConnectAllServers
//
// Connect to all servers in this Domain
//
void CDomain::ConnectAllServers()
{
CWinAdminDoc *pDoc = (CWinAdminDoc*)((CWinAdminApp*)AfxGetApp())->GetDocument();
CObList *pServerList = pDoc->GetServerList();
pDoc->LockServerList();
POSITION pos = pServerList->GetHeadPosition();
while(pos) {
// Get a pointer to the server
CServer *pServer = (CServer*)pServerList->GetNext(pos);
// If this Server is int the domain and not connected, connect to it
if(pServer->GetDomain() == this
&& pServer->IsState(SS_NOT_CONNECTED)) {
// Tell the server to connect
pServer->Connect();
}
}
pDoc->UnlockServerList();
} // end CDomain::ConnectAllServers