1 /******************************************************************************
2 * Print Spooler Functions
3 *
4 *
5 * Copyright 1999 Thuy Nguyen
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 */
21
22
23 #include "config.h"
24 #include <stdarg.h>
25
26 #include "windef.h"
27 #include "winbase.h"
28 #include "wingdi.h"
29 #include "winspool.h"
30
31 #include "winreg.h"
32 #include "ddk/winsplp.h"
33 #include "wine/debug.h"
34
35 #include "wspool.h"
36
37 WINE_DEFAULT_DEBUG_CHANNEL(winspool);
38
39 /* ############################### */
40
41 static CRITICAL_SECTION backend_cs;
42 static CRITICAL_SECTION_DEBUG backend_cs_debug =
43 {
44 0, 0, &backend_cs,
45 { &backend_cs_debug.ProcessLocksList, &backend_cs_debug.ProcessLocksList },
46 0, 0, { (DWORD_PTR)(__FILE__ ": backend_cs") }
47 };
48 static CRITICAL_SECTION backend_cs = { &backend_cs_debug, -1, 0, 0, 0, 0 };
49
50 /* ############################### */
51
52 HINSTANCE WINSPOOL_hInstance = NULL;
53
54 static HMODULE hlocalspl = NULL;
55 static BOOL (WINAPI *pInitializePrintProvidor)(LPPRINTPROVIDOR, DWORD, LPWSTR);
56
57 PRINTPROVIDOR * backend = NULL;
58
59 /******************************************************************************
60 * load_backend [internal]
61 *
62 * load and init our backend (the local printprovider: "localspl.dll")
63 *
64 * PARAMS
65 *
66 * RETURNS
67 * Success: TRUE
68 * Failure: FALSE and RPC_S_SERVER_UNAVAILABLE
69 *
70 * NOTES
71 * In windows, winspool.drv use RPC to interact with the spooler service
72 * (spoolsv.exe with spoolss.dll) and the spooler router (spoolss.dll) interact
73 * with the correct printprovider (localspl.dll for the local system)
74 *
75 */
76 BOOL load_backend(void)
77 {
78 static PRINTPROVIDOR mybackend;
79 DWORD res;
80
81 EnterCriticalSection(&backend_cs);
82 hlocalspl = LoadLibraryA("localspl.dll");
83 if (hlocalspl) {
84 pInitializePrintProvidor = (void *) GetProcAddress(hlocalspl, "InitializePrintProvidor");
85 if (pInitializePrintProvidor) {
86
87 /* native localspl does not clear unused entries */
88 memset(&mybackend, 0, sizeof(mybackend));
89 res = pInitializePrintProvidor(&mybackend, sizeof(mybackend), NULL);
90 if (res) {
91 backend = &mybackend;
92 LeaveCriticalSection(&backend_cs);
93 TRACE("backend: %p (%p)\n", backend, hlocalspl);
94 return TRUE;
95 }
96 }
97 FreeLibrary(hlocalspl);
98 }
99
100 LeaveCriticalSection(&backend_cs);
101
102 WARN("failed to load the backend: %u\n", GetLastError());
103 SetLastError(RPC_S_SERVER_UNAVAILABLE);
104 return FALSE;
105 }
106
107 /******************************************************************************
108 * unload_backend [internal]
109 *
110 */
111 static void unload_backend(void)
112 {
113 EnterCriticalSection(&backend_cs);
114 backend = NULL;
115 FreeLibrary(hlocalspl);
116 LeaveCriticalSection(&backend_cs);
117 }
118
119
120 /******************************************************************************
121 * DllMain
122 *
123 * Winspool entry point.
124 *
125 */
126 BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD reason, LPVOID lpReserved)
127 {
128 switch (reason)
129 {
130 case DLL_PROCESS_ATTACH: {
131 WINSPOOL_hInstance = hInstance;
132 DisableThreadLibraryCalls(hInstance);
133 WINSPOOL_LoadSystemPrinters();
134 break;
135 }
136 case DLL_PROCESS_DETACH:
137 unload_backend();
138 break;
139 }
140
141 return TRUE;
142 }
143
This page was automatically generated by the
LXR engine.
Visit the LXR main site for more
information.