1 /*
2 * Driver Environment functions
3 *
4 * Note: This has NOTHING to do with the task/process environment!
5 *
6 * Copyright 1997 Marcus Meissner
7 * Copyright 1998 Andreas Mohr
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 */
23
24 #include "config.h"
25
26 #include <stdarg.h>
27 #include <stdio.h>
28 #include <string.h>
29
30 #include "windef.h"
31 #include "winbase.h"
32 #include "wingdi.h"
33 #include "wine/wingdi16.h"
34 #include "wine/debug.h"
35
36 WINE_DEFAULT_DEBUG_CHANNEL(gdi);
37
38 typedef struct {
39 ATOM atom;
40 HGLOBAL16 handle;
41 } ENVTABLE;
42
43 static ENVTABLE EnvTable[20];
44
45 static ENVTABLE *SearchEnvTable(ATOM atom)
46 {
47 INT16 i;
48
49 for (i = 19; i >= 0; i--) {
50 if (EnvTable[i].atom == atom)
51 return &EnvTable[i];
52 }
53 return NULL;
54 }
55
56 static ATOM GDI_GetNullPortAtom(void)
57 {
58 static ATOM NullPortAtom = 0;
59 if (!NullPortAtom)
60 {
61 char NullPort[256];
62
63 GetProfileStringA( "windows", "nullport", "none",
64 NullPort, sizeof(NullPort) );
65 NullPortAtom = AddAtomA( NullPort );
66 }
67 return NullPortAtom;
68 }
69
70 static ATOM PortNameToAtom(LPCSTR lpPortName, BOOL16 add)
71 {
72 char buffer[256];
73
74 lstrcpynA( buffer, lpPortName, sizeof(buffer) );
75
76 if (buffer[0] && buffer[strlen(buffer)-1] == ':') buffer[strlen(buffer)-1] = 0;
77
78 if (add)
79 return AddAtomA(buffer);
80 else
81 return FindAtomA(buffer);
82 }
83
84
85 /***********************************************************************
86 * GetEnvironment (GDI.133)
87 */
88 INT16 WINAPI GetEnvironment16(LPCSTR lpPortName, LPDEVMODEA lpdev, UINT16 nMaxSize)
89 {
90 ATOM atom;
91 LPCSTR p;
92 ENVTABLE *env;
93 WORD size;
94
95 TRACE("('%s', %p, %d)\n", lpPortName, lpdev, nMaxSize);
96
97 if (!(atom = PortNameToAtom(lpPortName, FALSE)))
98 return 0;
99 if (atom == GDI_GetNullPortAtom())
100 if (!(atom = FindAtomA((LPCSTR)lpdev)))
101 return 0;
102 if (!(env = SearchEnvTable(atom)))
103 return 0;
104 size = GlobalSize16(env->handle);
105 if (!lpdev) return 0;
106 if (size < nMaxSize) nMaxSize = size;
107 if (!(p = GlobalLock16(env->handle))) return 0;
108 memcpy(lpdev, p, nMaxSize);
109 GlobalUnlock16(env->handle);
110 return nMaxSize;
111 }
112
113
114 /***********************************************************************
115 * SetEnvironment (GDI.132)
116 */
117 INT16 WINAPI SetEnvironment16(LPCSTR lpPortName, LPDEVMODEA lpdev, UINT16 nCount)
118 {
119 ATOM atom;
120 BOOL16 nullport = FALSE;
121 LPCSTR port_name;
122 LPSTR device_mode;
123 ENVTABLE *env;
124 HGLOBAL16 handle;
125
126 TRACE("('%s', %p, %d)\n", lpPortName, lpdev, nCount);
127
128 if ((atom = PortNameToAtom(lpPortName, FALSE))) {
129 if (atom == GDI_GetNullPortAtom()) {
130 nullport = TRUE;
131 atom = FindAtomA((LPCSTR)lpdev);
132 }
133 env = SearchEnvTable(atom);
134 GlobalFree16(env->handle);
135 env->atom = 0;
136 }
137 if (nCount) { /* store DEVMODE struct */
138 if (nullport)
139 port_name = (LPSTR)lpdev;
140 else
141 port_name = lpPortName;
142
143 if ((atom = PortNameToAtom(port_name, TRUE))
144 && (env = SearchEnvTable(0))
145 && (handle = GlobalAlloc16(GMEM_SHARE|GMEM_MOVEABLE, nCount))) {
146 if (!(device_mode = GlobalLock16(handle))) {
147 GlobalFree16(handle);
148 return 0;
149 }
150 env->atom = atom;
151 env->handle = handle;
152 memcpy(device_mode, lpdev, nCount);
153 GlobalUnlock16(handle);
154 return handle;
155 }
156 else return 0;
157 }
158 else return -1;
159 }
160
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