summaryrefslogtreecommitdiff
path: root/vcl/unx/generic/desktopdetect/desktopdetector.cxx
blob: bad134fbdafd27505f7792a2ba2b185609640ba3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <X11/Xlib.h>

#include <unx/desktops.hxx>

#include <rtl/bootstrap.hxx>
#include <rtl/process.h>
#include <osl/thread.h>

#include <vclpluginapi.h>

#include <string.h>
#include <comphelper/string.hxx>

static bool is_gnome_desktop( Display* pDisplay )
{

    // warning: these checks are coincidental, GNOME does not
    // explicitly advertise itself
    if ( getenv( "GNOME_DESKTOP_SESSION_ID" ) )
        return true;

    bool ret = false;

    Atom nAtom1 = XInternAtom( pDisplay, "GNOME_SM_PROXY", True );
    Atom nAtom2 = XInternAtom( pDisplay, "NAUTILUS_DESKTOP_WINDOW_ID", True );
    if( nAtom1 || nAtom2 )
    {
        int nProperties = 0;
        Atom* pProperties = XListProperties( pDisplay, DefaultRootWindow( pDisplay ), &nProperties );
        if( pProperties && nProperties )
        {
            for( int i = 0; i < nProperties; i++ )
                if( pProperties[ i ] == nAtom1 ||
                    pProperties[ i ] == nAtom2 )
                {
                    ret = true;
                    break;
                }
            XFree( pProperties );
        }
    }
    if (ret)
        return true;

    Atom nUTFAtom       = XInternAtom( pDisplay, "UTF8_STRING", True );
    Atom nNetWMNameAtom = XInternAtom( pDisplay, "_NET_WM_NAME", True );
    if( nUTFAtom && nNetWMNameAtom )
    {
        // another, more expensive check: search for a gnome-panel
        ::Window aRoot, aParent, *pChildren = nullptr;
        unsigned int nChildren = 0;
        XQueryTree( pDisplay, DefaultRootWindow( pDisplay ),
                    &aRoot, &aParent, &pChildren, &nChildren );
        if( pChildren && nChildren )
        {
            for( unsigned int i = 0; i < nChildren && ! ret; i++ )
            {
                Atom nType = None;
                int nFormat = 0;
                unsigned long nItems = 0, nBytes = 0;
                unsigned char* pProp = nullptr;
                XGetWindowProperty( pDisplay,
                                    pChildren[i],
                                    nNetWMNameAtom,
                                    0, 8,
                                    False,
                                    nUTFAtom,
                                    &nType,
                                    &nFormat,
                                    &nItems,
                                    &nBytes,
                                    &pProp );
                if( pProp && nType == nUTFAtom )
                {
                    OString aWMName( reinterpret_cast<char*>(pProp) );
                    if (
                        (aWMName.equalsIgnoreAsciiCase("gnome-shell")) ||
                        (aWMName.equalsIgnoreAsciiCase("gnome-panel"))
                       )
                    {
                        ret = true;
                    }
                }
                if( pProp )
                    XFree( pProp );
            }
            XFree( pChildren );
        }
    }

    return ret;
}

static bool is_plasma5_desktop()
{
    static const char* pFullVersion = getenv("KDE_FULL_SESSION");
    static const char* pSessionVersion = getenv("KDE_SESSION_VERSION");
    return pFullVersion && pSessionVersion && (0 == strcmp(pSessionVersion, "5"));
}

extern "C"
{

DESKTOP_DETECTOR_PUBLIC DesktopType get_desktop_environment()
{
    static const char *pOverride = getenv( "OOO_FORCE_DESKTOP" );

    if ( pOverride && *pOverride )
    {
        OString aOver( pOverride );

        if ( aOver.equalsIgnoreAsciiCase( "lxqt" ) )
            return DESKTOP_LXQT;
        if (aOver.equalsIgnoreAsciiCase("plasma5") || aOver.equalsIgnoreAsciiCase("plasma"))
            return DESKTOP_PLASMA5;
        if ( aOver.equalsIgnoreAsciiCase( "gnome" ) )
            return DESKTOP_GNOME;
        if ( aOver.equalsIgnoreAsciiCase( "gnome-wayland" ) )
            return DESKTOP_GNOME;
        if ( aOver.equalsIgnoreAsciiCase( "unity" ) )
            return DESKTOP_UNITY;
        if ( aOver.equalsIgnoreAsciiCase( "xfce" ) )
            return DESKTOP_XFCE;
        if ( aOver.equalsIgnoreAsciiCase( "mate" ) )
            return DESKTOP_MATE;
        if ( aOver.equalsIgnoreAsciiCase( "none" ) )
            return DESKTOP_UNKNOWN;
    }

    OUString plugin;
    rtl::Bootstrap::get("SAL_USE_VCLPLUGIN", plugin);

    if (plugin == "svp")
        return DESKTOP_NONE;

    const char *pDesktop = getenv( "XDG_CURRENT_DESKTOP" );
    if ( pDesktop )
    {
        OString aCurrentDesktop( pDesktop, strlen( pDesktop ) );

        //it may be separated by colon ( e.g. unity:unity7:ubuntu )
        std::vector<OUString> aSplitCurrentDesktop = comphelper::string::split(
                OStringToOUString( aCurrentDesktop, RTL_TEXTENCODING_UTF8), ':');
        for (const auto& rCurrentDesktopStr : aSplitCurrentDesktop)
        {
            if ( rCurrentDesktopStr.equalsIgnoreAsciiCase( "unity" ) )
                return DESKTOP_UNITY;
            else if ( rCurrentDesktopStr.equalsIgnoreAsciiCase( "gnome" ) )
                return DESKTOP_GNOME;
            else if ( rCurrentDesktopStr.equalsIgnoreAsciiCase( "lxqt" ) )
                return DESKTOP_LXQT;
        }
    }

    const char *pSession = getenv( "DESKTOP_SESSION" );
    OString aDesktopSession;
    if ( pSession )
        aDesktopSession = OString( pSession, strlen( pSession ) );

    // fast environment variable checks
    if ( aDesktopSession.equalsIgnoreAsciiCase( "gnome" ) )
        return DESKTOP_GNOME;
    else if ( aDesktopSession.equalsIgnoreAsciiCase( "gnome-wayland" ) )
        return DESKTOP_GNOME;
    else if ( aDesktopSession.equalsIgnoreAsciiCase( "mate" ) )
        return DESKTOP_MATE;
    else if ( aDesktopSession.equalsIgnoreAsciiCase( "xfce" ) )
        return DESKTOP_XFCE;
    else if ( aDesktopSession.equalsIgnoreAsciiCase( "lxqt" ) )
        return DESKTOP_LXQT;

    if (is_plasma5_desktop())
        return DESKTOP_PLASMA5;

    // tdf#121275 if we still can't tell, and WAYLAND_DISPLAY
    // is set, default to gtk3
    const char* pWaylandStr = getenv("WAYLAND_DISPLAY");
    if (pWaylandStr && *pWaylandStr)
        return DESKTOP_GNOME;

    // these guys can be slower, with X property fetches,
    // round-trips etc. and so are done later.

    // get display to connect to
    const char* pDisplayStr = getenv( "DISPLAY" );

    int nParams = rtl_getAppCommandArgCount();
    OUString aParam;
    OString aBParm;
    for( int i = 0; i < nParams; i++ )
    {
        rtl_getAppCommandArg( i, &aParam.pData );
        if( i < nParams-1 && (aParam == "-display" || aParam == "--display" ) )
        {
            rtl_getAppCommandArg( i+1, &aParam.pData );
            aBParm = OUStringToOString( aParam, osl_getThreadTextEncoding() );
            pDisplayStr = aBParm.getStr();
            break;
        }
    }

    // no server at all
    if( ! pDisplayStr || !*pDisplayStr )
        return DESKTOP_NONE;


    /* #i92121# workaround deadlocks in the X11 implementation
    */
    static const char* pNoXInitThreads = getenv( "SAL_NO_XINITTHREADS" );
    /* #i90094#
       from now on we know that an X connection will be
       established, so protect X against itself
    */
    if( ! ( pNoXInitThreads && *pNoXInitThreads ) )
        XInitThreads();

    Display* pDisplay = XOpenDisplay( pDisplayStr );
    if( pDisplay == nullptr )
        return DESKTOP_NONE;

    DesktopType ret;
    if ( is_gnome_desktop( pDisplay ) )
        ret = DESKTOP_GNOME;
    else
        ret = DESKTOP_UNKNOWN;

    XCloseDisplay( pDisplay );

    return ret;
}

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */