608 lines
14 KiB
C
608 lines
14 KiB
C
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/*==========================================================================
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*
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* Copyright (C) 1995-1997 Microsoft Corporation. All Rights Reserved.
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*
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* File: dplaysvr.c
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* Content: dplay winsock shared .exe - allows multiple apps to share
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* a single winsock port
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* History:
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* Date By Reason
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* ==== == ======
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* 2/10/97 andyco created it from ddhelp
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* 29-jan-98 sohailm added support for stream enum sessions
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*
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***************************************************************************/
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#ifdef WINNT
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#ifdef DBG
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#undef DEBUG
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#define DEBUG
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#endif
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#endif
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#include <windows.h>
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#include "dplaysvr.h"
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#include "newdpf.h"
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#include "memalloc.h"
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#include "dphelp.h"
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HANDLE hInstApp;
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BOOL bNoCallbacks;
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CRITICAL_SECTION gcsCritSection; // the crit section we take in winmain
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// this is a global so dphelp can take it before
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// forwarding enum requests that come in on its
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// receive thread (manbugs 3907)
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int gnCSCount; // dplaysvr lock count
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/*
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* Externs
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*/
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extern RECEIVELIST gReceiveList;
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extern FDS gReadfds;
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// we watch every dplay process so when it exits we
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// make sure it cleaned up...
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typedef struct _PROCESSDATA
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{
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struct _PROCESSDATA *link;
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DWORD pid;
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} PROCESSDATA, *LPPROCESSDATA;
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LPPROCESSDATA lpProcessList; // list of all processes that are registered
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// with us
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/*
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* ThreadProc
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*
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* Open a process and wait for it to terminate
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*/
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DWORD WINAPI ThreadProc( LPVOID *pdata )
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{
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HANDLE hproc;
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DWORD rc;
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LPPROCESSDATA ppd;
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LPPROCESSDATA curr;
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LPPROCESSDATA prev;
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PROCESSDATA pd;
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DPHELPDATA hd;
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ppd = (LPPROCESSDATA) pdata;
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/*
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* get a handle to the process that attached to DDRAW
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*/
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DPF( 2, "Watchdog thread started for pid %08lx", ppd->pid );
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hproc = OpenProcess( PROCESS_QUERY_INFORMATION | SYNCHRONIZE,
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FALSE, ppd->pid );
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if( hproc == NULL )
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{
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DPF( 1, "OpenProcess for %08lx failed!", ppd->pid );
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ExitThread( 0 );
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}
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/*
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* wait for process to die
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*/
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rc = WaitForSingleObject( hproc, INFINITE );
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if( rc == WAIT_FAILED )
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{
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DPF( 1, "Wait for process %08lx failed", ppd->pid );
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CloseHandle( hproc );
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ExitThread( 0 );
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}
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/*
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* remove process from the list of watched processes
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*/
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ENTER_DPLAYSVR();
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pd = *ppd;
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curr = lpProcessList;
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prev = NULL;
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while( curr != NULL )
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{
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if( curr == ppd )
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{
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if( prev == NULL )
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{
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lpProcessList = curr->link;
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}
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else
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{
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prev->link = curr->link;
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}
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DPF( 2, "PID %08lx removed from list", ppd->pid );
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MemFree( curr );
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break;
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}
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prev = curr;
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curr = curr->link;
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}
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if( bNoCallbacks )
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{
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DPF( 1, "No callbacks allowed: leaving thread early" );
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LEAVE_DPLAYSVR();
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CloseHandle( hproc );
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ExitThread( 0 );
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}
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// clean up!
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memset(&hd,0,sizeof(hd));
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hd.pid = pd.pid;
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DPlayHelp_DeleteServer(&hd,TRUE);
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LEAVE_DPLAYSVR();
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CloseHandle( hproc );
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ExitThread( 0 );
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return 0;
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} /* ThreadProc */
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/*
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* MainWndProc
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*/
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LONG_PTR __stdcall MainWndProc( HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam )
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{
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switch(message)
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{
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case WM_ENDSESSION:
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/*
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* shoot ourselves in the head
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*/
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if( lParam == FALSE )
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{
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DPF( 3, "WM_ENDSESSION" );
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ENTER_DPLAYSVR();
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DPF( 1, "Setting NO CALLBACKS" );
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bNoCallbacks = TRUE;
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LEAVE_DPLAYSVR();
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}
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else
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{
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DPF( 3, "User logging off" );
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}
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break;
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}
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return DefWindowProc(hWnd, message, wParam, lParam);
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} /* MainWndProc */
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/*
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* WindowThreadProc
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*/
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void WindowThreadProc( LPVOID pdata )
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{
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static char szClassName[] = "DPlayHelpWndClass";
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WNDCLASS cls;
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MSG msg;
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HWND hwnd;
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/*
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* build class and create window
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*/
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cls.lpszClassName = szClassName;
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cls.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
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cls.hInstance = hInstApp;
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cls.hIcon = NULL;
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cls.hCursor = NULL;
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cls.lpszMenuName = NULL;
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cls.style = 0;
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cls.lpfnWndProc = (WNDPROC)MainWndProc;
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cls.cbWndExtra = 0;
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cls.cbClsExtra = 0;
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if( !RegisterClass( &cls ) )
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{
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DPF( 1, "RegisterClass FAILED!" );
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ExitThread( 0 );
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}
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hwnd = CreateWindow( szClassName, szClassName,
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WS_POPUP, 0, 0, 0, 0, NULL, NULL, hInstApp, NULL);
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if( hwnd == NULL )
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{
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DPF( 1, "No monitor window!" );
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ExitThread( 0 );
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}
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/*
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* pump the messages
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*/
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while( GetMessage( &msg, NULL, 0, 0 ) )
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{
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TranslateMessage( &msg );
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DispatchMessage( &msg );
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}
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DPF( 1, "Exiting WindowThreadProc" );
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ExitThread( 1 );
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} /* WindowThreadProc */
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//
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// called by by DPlayHelp_AddServer when we get a new process attached.
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// we wait for the process to go away, and then make sure it cleaned
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// all its registered servers up.
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//
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void WatchNewPid(LPDPHELPDATA phd)
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{
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LPPROCESSDATA ppd;
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BOOL found;
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DWORD tid;
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DPF( 1, "watching new pid" );
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ENTER_DPLAYSVR();
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ppd = lpProcessList;
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found = FALSE;
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while( ppd != NULL )
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{
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if( ppd->pid == phd->pid )
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{
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DPF( 2, "Have thread for process %08lx already", phd->pid );
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found = TRUE;
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break;
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}
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ppd = ppd->link;
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}
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/*
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* couldn't find anyone waiting on this process, so create
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* a brand spanking new thread
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*/
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if( !found )
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{
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DPF( 2, "Allocating new thread for process %08lx",phd->pid );
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ppd = MemAlloc( sizeof( PROCESSDATA ) );
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if( ppd != NULL )
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{
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HANDLE h;
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ppd->link = lpProcessList;
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lpProcessList = ppd;
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ppd->pid = phd->pid;
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h = CreateThread(NULL,
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0,
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(LPTHREAD_START_ROUTINE) ThreadProc,
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(LPVOID)ppd,
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0,
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(LPDWORD)&tid);
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if( h != NULL )
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{
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DPF( 2, "Thread %08lx created",tid);
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CloseHandle( h );
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}
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else
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{
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#ifdef DEBUG
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DPF( 0, "COULD NOT CREATE HELPER THREAD FOR PID %08lx", phd->pid );
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DebugBreak(); //_asm int 3;
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#endif
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}
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}
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else
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{
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#ifdef DEBUG
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DPF( 0, "OUT OF MEMORY CREATING HELPER THREAD FOR PID %08lx", phd->pid );
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DebugBreak(); //_asm int 3;
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#endif
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}
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}
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LEAVE_DPLAYSVR();
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} // WatchNewPid
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typedef DWORD (WINAPI *PFNREGISTERSERVICE)(DWORD,DWORD);
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// nt's winbase.h doesn't have these constants - we need them
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// so we can compile. taken from \proj\dev\inc\winbase.h
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#ifndef RSP_UNREGISTER_SERVICE
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#define RSP_UNREGISTER_SERVICE 0x00000000
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#endif
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#ifndef RSP_SIMPLE_SERVICE
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#define RSP_SIMPLE_SERVICE 0x00000001
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#endif
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// on Win95, we want to call RegisterServiceProcess
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// but, it's not available on NT, so we can't import it directly
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// here we try to find it dynamically in kernel32. if we find it,
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// we call it, otherwise we assume we're on NT and it's not avaible
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void MakeMeService()
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{
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HANDLE hLib;
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PFNREGISTERSERVICE pfnRegisterServiceProcess;
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hLib = LoadLibrary("kernel32.dll");
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if (!hLib)
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{
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// wacky!
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DPF(1,"could not load library kernel32 to register service proc");
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return;
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}
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pfnRegisterServiceProcess = (PFNREGISTERSERVICE)GetProcAddress(hLib,"RegisterServiceProcess");
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if (!pfnRegisterServiceProcess)
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{
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// this is expected on NT
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DPF(3,"could not register service process - expected on NT");
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FreeLibrary(hLib);
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return ;
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}
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pfnRegisterServiceProcess( 0, RSP_SIMPLE_SERVICE );
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FreeLibrary(hLib);
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return ;
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} // MakeMeService
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// on Win95, we want to call RegisterServiceProcess to Unregister
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// (see MakeMeService)
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void StopServiceProcess()
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{
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HANDLE hLib;
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PFNREGISTERSERVICE pfnRegisterServiceProcess;
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hLib = LoadLibrary("kernel32.dll");
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if (!hLib)
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{
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// wacky!
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DPF(1,"could not load library kernel32 to register service proc");
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return;
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}
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pfnRegisterServiceProcess = (PFNREGISTERSERVICE)GetProcAddress(hLib,"RegisterServiceProcess");
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if (!pfnRegisterServiceProcess)
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{
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// this is expected on NT
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DPF(3,"could not unregister service process - not avail - not tragic");
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FreeLibrary(hLib);
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return ;
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}
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// unregistered!
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pfnRegisterServiceProcess( 0, RSP_UNREGISTER_SERVICE );
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FreeLibrary(hLib);
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return ;
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} // StopServiceProcess
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/*
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* WinMain
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*/
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int PASCAL WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
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LPSTR lpCmdLine, int nCmdShow)
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{
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DWORD tid;
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DWORD rc;
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HANDLE hstartevent;
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HANDLE hstartupevent;
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HANDLE hmutex;
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HANDLE hackevent;
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LPDPHELPDATA phd;
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HANDLE hsharedmem;
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HANDLE h;
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char szSystemDir[1024];
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/*
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* Set our working directory to the system directory.
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* This prevents us from holding network connections open
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* forever if the first DirectDraw app that we run is across
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* a network connection.
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*/
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GetSystemDirectory(szSystemDir, sizeof(szSystemDir));
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SetCurrentDirectory(szSystemDir);
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// try to register ourselves as a service so user can't see us
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// in task list
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MakeMeService();
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#if 0
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// andyco - not sure if we need this...
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/*
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* We must guarantee that DPHELP unloads after the last ddraw app,
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* since ctrl-alt-del may have happened while an app held the ddraw
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* lock, and DPHELP needs to clean up orphaned cheap ddraw mutex
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|
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* locks.
|
||
|
|
*/
|
||
|
|
if ( ! SetProcessShutdownParameters(0x100,SHUTDOWN_NORETRY) )
|
||
|
|
{
|
||
|
|
DPF(0,"dplaysvr could not set itself to shutdown last!");
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
hInstApp = hInstance;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* create startup event
|
||
|
|
*/
|
||
|
|
hstartupevent = CreateEvent( NULL, TRUE, FALSE, DPHELP_STARTUP_EVENT_NAME );
|
||
|
|
|
||
|
|
DPFINIT();
|
||
|
|
DPF( 2, "*** dplaysvr STARTED, PID=%08lx ***", GetCurrentProcessId() );
|
||
|
|
|
||
|
|
if( !MemInit() )
|
||
|
|
{
|
||
|
|
DPF( 1, "Could not init memory manager" );
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* create shared memory area
|
||
|
|
*/
|
||
|
|
hsharedmem = CreateFileMapping( INVALID_HANDLE_VALUE, NULL,
|
||
|
|
PAGE_READWRITE, 0, sizeof( DPHELPDATA ),
|
||
|
|
DPHELP_SHARED_NAME );
|
||
|
|
if( hsharedmem == NULL )
|
||
|
|
{
|
||
|
|
DPF( 1, "Could not create file mapping!" );
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* create mutex for people who want to use the shared memory area
|
||
|
|
*/
|
||
|
|
hmutex = CreateMutex( NULL, FALSE, DPHELP_MUTEX_NAME );
|
||
|
|
if( hmutex == NULL )
|
||
|
|
{
|
||
|
|
DPF( 1, "Could not create mutex " DPHELP_MUTEX_NAME );
|
||
|
|
CloseHandle( hsharedmem );
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* create events
|
||
|
|
*/
|
||
|
|
hstartevent = CreateEvent( NULL, FALSE, FALSE, DPHELP_EVENT_NAME );
|
||
|
|
if( hstartevent == NULL )
|
||
|
|
{
|
||
|
|
DPF( 1, "Could not create event " DPHELP_EVENT_NAME );
|
||
|
|
CloseHandle( hmutex );
|
||
|
|
CloseHandle( hsharedmem );
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
hackevent = CreateEvent( NULL, FALSE, FALSE, DPHELP_ACK_EVENT_NAME );
|
||
|
|
if( hackevent == NULL )
|
||
|
|
{
|
||
|
|
DPF( 1, "Could not create event " DPHELP_ACK_EVENT_NAME );
|
||
|
|
CloseHandle( hmutex );
|
||
|
|
CloseHandle( hsharedmem );
|
||
|
|
CloseHandle( hstartevent );
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Create window so we can get messages
|
||
|
|
*/
|
||
|
|
h = CreateThread(NULL,
|
||
|
|
0,
|
||
|
|
(LPTHREAD_START_ROUTINE) WindowThreadProc,
|
||
|
|
NULL,
|
||
|
|
0,
|
||
|
|
(LPDWORD)&tid );
|
||
|
|
if( h == NULL )
|
||
|
|
{
|
||
|
|
DPF( 1, "Create of WindowThreadProc FAILED!" );
|
||
|
|
CloseHandle( hackevent );
|
||
|
|
CloseHandle( hmutex );
|
||
|
|
CloseHandle( hsharedmem );
|
||
|
|
CloseHandle( hstartevent );
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
CloseHandle( h );
|
||
|
|
|
||
|
|
/*
|
||
|
|
* serialize access to us
|
||
|
|
*/
|
||
|
|
INIT_DPLAYSVR_CSECT();
|
||
|
|
|
||
|
|
/*
|
||
|
|
* let invoker and anyone else who comes along know we exist
|
||
|
|
*/
|
||
|
|
SetEvent( hstartupevent );
|
||
|
|
|
||
|
|
/*
|
||
|
|
* loop forever, processing requests
|
||
|
|
*/
|
||
|
|
while( 1 )
|
||
|
|
{
|
||
|
|
/*
|
||
|
|
* wait to be notified of a request
|
||
|
|
*/
|
||
|
|
DPF( 1, "Waiting for next request" );
|
||
|
|
rc = WaitForSingleObject( hstartevent, INFINITE );
|
||
|
|
if( rc == WAIT_FAILED )
|
||
|
|
{
|
||
|
|
DPF( 1, "Wait FAILED!!!" );
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
ENTER_DPLAYSVR();
|
||
|
|
phd = (LPDPHELPDATA) MapViewOfFile( hsharedmem, FILE_MAP_ALL_ACCESS, 0, 0, 0 );
|
||
|
|
if( phd == NULL )
|
||
|
|
{
|
||
|
|
DPF( 1, "Could not create view of file!" );
|
||
|
|
LEAVE_DPLAYSVR();
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* find out what we need to do
|
||
|
|
*/
|
||
|
|
switch( phd->req )
|
||
|
|
{
|
||
|
|
case DPHELPREQ_SUICIDE:
|
||
|
|
DPF( 1, "DPHELPREQ_SUICIDE" );
|
||
|
|
|
||
|
|
DPlayHelp_FreeServerList();
|
||
|
|
|
||
|
|
SetEvent( hackevent );
|
||
|
|
CloseHandle( hmutex );
|
||
|
|
UnmapViewOfFile( phd );
|
||
|
|
CloseHandle( hsharedmem );
|
||
|
|
CloseHandle( hstartevent );
|
||
|
|
if (gReceiveList.pConnection)
|
||
|
|
{
|
||
|
|
MemFree(gReceiveList.pConnection);
|
||
|
|
}
|
||
|
|
if (gReadfds.pfdbigset)
|
||
|
|
{
|
||
|
|
MemFree(gReadfds.pfdbigset);
|
||
|
|
}
|
||
|
|
FINI_DPLAYSVR_CSECT();
|
||
|
|
|
||
|
|
#ifdef DEBUG
|
||
|
|
MemState();
|
||
|
|
#endif
|
||
|
|
DPF( 3, "Good Night Gracie" );
|
||
|
|
TerminateProcess( GetCurrentProcess(), 0 );
|
||
|
|
break;
|
||
|
|
|
||
|
|
case DPHELPREQ_RETURNHELPERPID:
|
||
|
|
|
||
|
|
DPF( 2, "DDHELPREQ_RETURNHELPERPID" );
|
||
|
|
phd->pid = GetCurrentProcessId();
|
||
|
|
break;
|
||
|
|
|
||
|
|
|
||
|
|
case DPHELPREQ_DPLAYADDSERVER:
|
||
|
|
|
||
|
|
DPF( 2, "DPHELPREQ_DPLAYADDSERVER" );
|
||
|
|
phd->hr = DPlayHelp_AddServer(phd);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case DPHELPREQ_DPLAYDELETESERVER:
|
||
|
|
|
||
|
|
DPF( 2, "DPHELPREQ_DPLAYDELETESERVER" );
|
||
|
|
DPlayHelp_DeleteServer(phd,FALSE);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
DPF( 1, "helper - Unknown Request???" );
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* let caller know we've got the news
|
||
|
|
*/
|
||
|
|
UnmapViewOfFile( phd );
|
||
|
|
SetEvent( hackevent );
|
||
|
|
LEAVE_DPLAYSVR();
|
||
|
|
}
|
||
|
|
|
||
|
|
StopServiceProcess();
|
||
|
|
|
||
|
|
} /* WinMain */
|