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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <config_libraries.h>
21 :
22 : #include "osl/module.h"
23 : #include "osl/process.h"
24 :
25 : #include "rtl/bootstrap.hxx"
26 :
27 : #include "salinst.hxx"
28 : #include "generic/gensys.h"
29 : #include "generic/gendata.hxx"
30 : #include "unx/desktops.hxx"
31 : #include "vcl/printerinfomanager.hxx"
32 : #include <config_vclplug.h>
33 :
34 : #include <cstdio>
35 : #include <unistd.h>
36 :
37 : extern "C" {
38 : typedef SalInstance*(*salFactoryProc)( oslModule pModule);
39 : }
40 :
41 : static oslModule pCloseModule = NULL;
42 :
43 1 : static SalInstance* tryInstance( const OUString& rModuleBase, bool bForce = false )
44 : {
45 1 : SalInstance* pInst = NULL;
46 : // Disable gtk3 plugin for now unless explicitly requested via
47 : // SAL_USE_VCLPLUGIN=gtk3 (would ideally depend on experimental mode, but
48 : // reading the experimental mode setting requires the UNO service manager
49 : // which has not yet been instantiated):
50 1 : if (!bForce && rModuleBase == "gtk3")
51 : {
52 0 : return NULL;
53 : }
54 : OUString aModule(
55 : #ifdef SAL_DLLPREFIX
56 : SAL_DLLPREFIX
57 : #endif
58 1 : "vclplug_" + rModuleBase + "lo" SAL_DLLEXTENSION );
59 :
60 : oslModule aMod = osl_loadModuleRelative(
61 : reinterpret_cast< oslGenericFunction >( &tryInstance ), aModule.pData,
62 1 : SAL_LOADMODULE_DEFAULT );
63 1 : if( aMod )
64 : {
65 1 : salFactoryProc aProc = (salFactoryProc)osl_getAsciiFunctionSymbol( aMod, "create_SalInstance" );
66 1 : if( aProc )
67 : {
68 1 : pInst = aProc( aMod );
69 : SAL_INFO(
70 : "vcl.plugadapt",
71 : "sal plugin " << aModule << " produced instance " << pInst);
72 1 : if( pInst )
73 : {
74 1 : pCloseModule = aMod;
75 :
76 : #ifndef ANDROID
77 : /*
78 : * Recent GTK+ versions load their modules with RTLD_LOCAL, so we can
79 : * not access the 'gnome_accessibility_module_shutdown' anymore.
80 : * So make sure libgtk+ & co are still mapped into memory when
81 : * atk-bridge's atexit handler gets called.
82 : * #i109007# KDE3 seems to have the same problem.
83 : * And same applies for KDE4.
84 : */
85 1 : if( rModuleBase == "gtk" || rModuleBase == "gtk3" || rModuleBase == "tde" || rModuleBase == "kde" || rModuleBase == "kde4" )
86 : {
87 0 : pCloseModule = NULL;
88 : }
89 : #endif
90 1 : GetSalData()->m_pPlugin = aMod;
91 : }
92 : else
93 0 : osl_unloadModule( aMod );
94 : }
95 : else
96 : {
97 : SAL_WARN(
98 : "vcl.plugadapt",
99 : "could not load symbol create_SalInstance from shared object "
100 : << aModule);
101 0 : osl_unloadModule( aMod );
102 : }
103 : }
104 0 : else if (bForce)
105 : {
106 : SAL_WARN("vcl.plugadapt", "could not load shared object " << aModule);
107 : }
108 : else
109 : {
110 : SAL_INFO("vcl.plugadapt", "could not load shared object " << aModule);
111 : }
112 :
113 1 : return pInst;
114 : }
115 :
116 : #if !defined(ANDROID)
117 :
118 0 : static DesktopType get_desktop_environment()
119 : {
120 0 : OUString aModule(LIBO_LIBRARY(desktop_detector));
121 : oslModule aMod = osl_loadModuleRelative(
122 : reinterpret_cast< oslGenericFunction >( &tryInstance ), aModule.pData,
123 0 : SAL_LOADMODULE_DEFAULT );
124 0 : DesktopType ret = DESKTOP_UNKNOWN;
125 0 : if( aMod )
126 : {
127 : DesktopType (*pSym)() = (DesktopType(*)())
128 0 : osl_getAsciiFunctionSymbol( aMod, "get_desktop_environment" );
129 0 : if( pSym )
130 0 : ret = pSym();
131 : }
132 0 : osl_unloadModule( aMod );
133 0 : return ret;
134 : }
135 :
136 : #else
137 :
138 : #define get_desktop_environment() DESKTOP_NONE // For now...
139 :
140 : #endif
141 :
142 0 : static SalInstance* autodetect_plugin()
143 : {
144 : static const char* const pTDEFallbackList[] =
145 : {
146 : "tde",
147 : #if ENABLE_KDE4
148 : "kde4",
149 : #endif
150 : #if ENABLE_KDE
151 : "kde",
152 : #endif
153 : "gtk3", "gtk", "gen", 0
154 : };
155 :
156 : static const char* const pKDEFallbackList[] =
157 : {
158 : #if ENABLE_KDE4
159 : "kde4",
160 : #endif
161 : #if ENABLE_KDE
162 : "kde",
163 : #endif
164 : "gtk3", "gtk", "gen", 0
165 : };
166 :
167 : static const char* const pStandardFallbackList[] =
168 : {
169 : "gtk3", "gtk", "gen", 0
170 : };
171 :
172 : static const char* const pHeadlessFallbackList[] =
173 : {
174 : "svp", 0
175 : };
176 :
177 0 : DesktopType desktop = get_desktop_environment();
178 0 : const char * const * pList = pStandardFallbackList;
179 0 : int nListEntry = 0;
180 :
181 : // no server at all: dummy plugin
182 0 : if ( desktop == DESKTOP_NONE )
183 0 : pList = pHeadlessFallbackList;
184 0 : else if ( desktop == DESKTOP_GNOME ||
185 0 : desktop == DESKTOP_UNITY ||
186 0 : desktop == DESKTOP_XFCE ||
187 : desktop == DESKTOP_MATE )
188 0 : pList = pStandardFallbackList;
189 0 : else if( desktop == DESKTOP_TDE )
190 0 : pList = pTDEFallbackList;
191 0 : else if( desktop == DESKTOP_KDE )
192 : {
193 0 : pList = pKDEFallbackList;
194 0 : nListEntry = 1;
195 : }
196 0 : else if( desktop == DESKTOP_KDE4 )
197 0 : pList = pKDEFallbackList;
198 :
199 0 : SalInstance* pInst = NULL;
200 0 : while( pList[nListEntry] && pInst == NULL )
201 : {
202 0 : OUString aTry( OUString::createFromAscii( pList[nListEntry] ) );
203 0 : pInst = tryInstance( aTry );
204 : SAL_INFO_IF(
205 : pInst, "vcl.plugadapt",
206 : "plugin autodetection: " << pList[nListEntry]);
207 0 : nListEntry++;
208 0 : }
209 :
210 0 : return pInst;
211 : }
212 :
213 1 : SalInstance *CreateSalInstance()
214 : {
215 1 : SalInstance *pInst = NULL;
216 :
217 1 : OUString aUsePlugin;
218 1 : if( Application::IsHeadlessModeRequested() )
219 1 : aUsePlugin = "svp";
220 : else
221 : {
222 0 : rtl::Bootstrap::get( "SAL_USE_VCLPLUGIN", aUsePlugin );
223 : }
224 :
225 1 : if( !aUsePlugin.isEmpty() )
226 1 : pInst = tryInstance( aUsePlugin, true );
227 :
228 1 : if( ! pInst )
229 0 : pInst = autodetect_plugin();
230 :
231 : // fallback, try everything
232 : static const char* const pPlugin[] = {
233 : "gtk3", "gtk", "kde4", "kde", "tde", "gen" };
234 :
235 1 : for ( int i = 0; !pInst && i != SAL_N_ELEMENTS(pPlugin); ++i )
236 0 : pInst = tryInstance( OUString::createFromAscii( pPlugin[ i ] ) );
237 :
238 1 : if( ! pInst )
239 : {
240 0 : std::fprintf( stderr, "no suitable windowing system found, exiting.\n" );
241 0 : _exit( 1 );
242 : }
243 :
244 : // acquire SolarMutex
245 1 : pInst->AcquireYieldMutex( 1 );
246 :
247 1 : return pInst;
248 : }
249 :
250 1 : void DestroySalInstance( SalInstance *pInst )
251 : {
252 : // release SolarMutex
253 1 : pInst->ReleaseYieldMutex();
254 :
255 1 : delete pInst;
256 1 : if( pCloseModule )
257 1 : osl_unloadModule( pCloseModule );
258 1 : }
259 :
260 1 : void InitSalData()
261 : {
262 1 : }
263 :
264 1 : void DeInitSalData()
265 : {
266 1 : }
267 :
268 1 : void InitSalMain()
269 : {
270 1 : }
271 :
272 0 : void SalAbort( const OUString& rErrorText, bool bDumpCore )
273 : {
274 0 : if( rErrorText.isEmpty() )
275 0 : std::fprintf( stderr, "Application Error\n" );
276 : else
277 0 : std::fprintf( stderr, "%s\n", OUStringToOString(rErrorText, osl_getThreadTextEncoding()).getStr() );
278 0 : if( bDumpCore )
279 0 : abort();
280 : else
281 0 : _exit(1);
282 : }
283 :
284 0 : const OUString& SalGetDesktopEnvironment()
285 : {
286 : // Order to match desktops.hxx' DesktopType
287 : static const char * const desktop_strings[] = {
288 : "none", "unknown", "GNOME", "UNITY",
289 : "XFCE", "MATE", "TDE",
290 : "KDE", "KDE4" };
291 0 : static OUString aRet;
292 0 : if( aRet.isEmpty())
293 : {
294 0 : aRet = OUString::createFromAscii(
295 0 : desktop_strings[get_desktop_environment()]);
296 : }
297 0 : return aRet;
298 : }
299 :
300 1 : SalData::SalData() :
301 : m_pInstance(NULL),
302 : m_pPlugin(NULL),
303 1 : m_pPIManager(NULL)
304 : {
305 1 : }
306 :
307 0 : SalData::~SalData()
308 : {
309 0 : psp::PrinterInfoManager::release();
310 0 : }
311 :
312 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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