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142 lines
3.9 KiB
C
142 lines
3.9 KiB
C
/******************************************************************************
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* Print Spooler Functions
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*
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*
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* Copyright 1999 Thuy Nguyen
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winspool.h"
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#include "winreg.h"
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#include "ddk/winsplp.h"
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#include "wine/debug.h"
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#include "wspool.h"
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WINE_DEFAULT_DEBUG_CHANNEL(winspool);
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/* ############################### */
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static CRITICAL_SECTION backend_cs;
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static CRITICAL_SECTION_DEBUG backend_cs_debug =
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{
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0, 0, &backend_cs,
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{ &backend_cs_debug.ProcessLocksList, &backend_cs_debug.ProcessLocksList },
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0, 0, { (DWORD_PTR)(__FILE__ ": backend_cs") }
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};
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static CRITICAL_SECTION backend_cs = { &backend_cs_debug, -1, 0, 0, 0, 0 };
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/* ############################### */
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HINSTANCE WINSPOOL_hInstance = NULL;
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static HMODULE hlocalspl = NULL;
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static BOOL (WINAPI *pInitializePrintProvidor)(LPPRINTPROVIDOR, DWORD, LPWSTR);
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PRINTPROVIDOR * backend = NULL;
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/******************************************************************************
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* load_backend [internal]
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*
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* load and init our backend (the local printprovider: "localspl.dll")
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*
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* PARAMS
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*
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* RETURNS
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* Success: TRUE
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* Failure: FALSE and RPC_S_SERVER_UNAVAILABLE
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*
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* NOTES
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* In windows, winspool.drv use RPC to interact with the spooler service
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* (spoolsv.exe with spoolss.dll) and the spooler router (spoolss.dll) interact
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* with the correct printprovider (localspl.dll for the local system)
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*
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*/
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BOOL load_backend(void)
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{
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static PRINTPROVIDOR mybackend;
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DWORD res;
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EnterCriticalSection(&backend_cs);
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hlocalspl = LoadLibraryA("localspl.dll");
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if (hlocalspl) {
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pInitializePrintProvidor = (void *) GetProcAddress(hlocalspl, "InitializePrintProvidor");
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if (pInitializePrintProvidor) {
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/* native localspl does not clear unused entries */
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memset(&mybackend, 0, sizeof(mybackend));
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res = pInitializePrintProvidor(&mybackend, sizeof(mybackend), NULL);
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if (res) {
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backend = &mybackend;
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LeaveCriticalSection(&backend_cs);
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TRACE("backend: %p (%p)\n", backend, hlocalspl);
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return TRUE;
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}
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}
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FreeLibrary(hlocalspl);
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}
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LeaveCriticalSection(&backend_cs);
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WARN("failed to load the backend: %u\n", GetLastError());
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SetLastError(RPC_S_SERVER_UNAVAILABLE);
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return FALSE;
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}
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/******************************************************************************
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* unload_backend [internal]
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*
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*/
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void unload_backend(void)
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{
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EnterCriticalSection(&backend_cs);
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backend = NULL;
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FreeLibrary(hlocalspl);
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LeaveCriticalSection(&backend_cs);
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}
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/******************************************************************************
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* DllMain
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*
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* Winspool entry point.
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*
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*/
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BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD reason, LPVOID lpReserved)
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{
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switch (reason)
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{
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case DLL_PROCESS_ATTACH: {
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WINSPOOL_hInstance = hInstance;
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DisableThreadLibraryCalls(hInstance);
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WINSPOOL_LoadSystemPrinters();
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break;
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}
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case DLL_PROCESS_DETACH:
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unload_backend();
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break;
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}
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return TRUE;
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}
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