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Dogcows Code - chaz/openbox/blob - util/epist/epist.cc
1 // -*- mode: C++; indent-tabs-mode: nil; -*-
2 // epist.cc for Epistory - a key handler for NETWM/EWMH window managers.
3 // Copyright (c) 2002 - 2002 Ben Jansens <ben at orodu.net>
5 // Permission is hereby granted, free of charge, to any person obtaining a
6 // copy of this software and associated documentation files (the "Software"),
7 // to deal in the Software without restriction, including without limitation
8 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 // and/or sell copies of the Software, and to permit persons to whom the
10 // Software is furnished to do so, subject to the following conditions:
12 // The above copyright notice and this permission notice shall be included in
13 // all copies or substantial portions of the Software.
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 // DEALINGS IN THE SOFTWARE.
24 # include "../../config.h"
25 #endif // HAVE_CONFIG_H
29 # include <sys/types.h>
31 #endif // HAVE_UNISTD_H
35 #endif // HAVE_STDIO_H
39 #endif // HAVE_STDLIB_H
43 #endif // HAVE_SIGNAL_H
47 #endif // HAVE_LIBGEN_H
59 #include "../../src/XAtom.hh"
61 bool _shutdown
= false;
63 char *_display_name
= 0;
64 Display
*_display
= 0;
70 static void signalhandler(int sig
)
71 #else // HAVE_SIGACTION
72 static RETSIGTYPE
signalhandler(int sig
)
73 #endif // HAVE_SIGACTION
77 cout
<< "epist: Segmentation fault. Aborting and dumping core.\n";
80 cout
<< "epist: Restarting on request.\n";
81 execvp(_argv
[0], _argv
);
82 execvp(basename(_argv
[0]), _argv
);
86 #ifndef HAVE_SIGACTION
87 // assume broken, braindead sysv signal semantics
88 signal(sig
, (RETSIGTYPE (*)(int)) signalhandler
);
89 #endif // HAVE_SIGACTION
93 void parseCommandLine(int argc
, char **argv
) {
96 for (int i
= 1; i
< argc
; ++i
) {
97 if (string(argv
[i
]) == "-display") {
99 cout
<< "error:: '-display' requires an argument\n";
102 _display_name
= argv
[i
];
104 string dtmp
= (string
)"DISPLAY=" + _display_name
;
105 if (putenv(const_cast<char*>(dtmp
.c_str()))) {
106 cout
<< "warning: couldn't set environment variable 'DISPLAY'\n";
114 bool findSupportingWM() {
116 if (! _xatom
->getValue(_root
, XAtom::net_supporting_wm_check
, XAtom::window
,
117 support_win
) || support_win
== None
)
121 _xatom
->getValue(support_win
, XAtom::net_wm_name
, XAtom::utf8
, title
);
122 cout
<< "Found compatible window manager: " << title
<< endl
;
127 int main(int argc
, char **argv
) {
128 #ifdef HAVE_SIGACTION
129 struct sigaction action
;
131 action
.sa_handler
= signalhandler
;
132 action
.sa_mask
= sigset_t();
133 action
.sa_flags
= SA_NOCLDSTOP
| SA_NODEFER
;
135 sigaction(SIGPIPE
, &action
, NULL
);
136 sigaction(SIGSEGV
, &action
, NULL
);
137 sigaction(SIGFPE
, &action
, NULL
);
138 sigaction(SIGTERM
, &action
, NULL
);
139 sigaction(SIGINT
, &action
, NULL
);
140 sigaction(SIGHUP
, &action
, NULL
);
141 #else // !HAVE_SIGACTION
142 signal(SIGPIPE
, (RETSIGTYPE (*)(int)) signalhandler
);
143 signal(SIGSEGV
, (RETSIGTYPE (*)(int)) signalhandler
);
144 signal(SIGFPE
, (RETSIGTYPE (*)(int)) signalhandler
);
145 signal(SIGTERM
, (RETSIGTYPE (*)(int)) signalhandler
);
146 signal(SIGINT
, (RETSIGTYPE (*)(int)) signalhandler
);
147 signal(SIGHUP
, (RETSIGTYPE (*)(int)) signalhandler
);
148 #endif // HAVE_SIGACTION
150 parseCommandLine(argc
, argv
);
152 _display
= XOpenDisplay(_display_name
);
154 cout
<< "Connection to X server '" << _display_name
<< "' failed.\n";
157 _root
= RootWindow(_display
, DefaultScreen(_display
));
158 _xatom
= new XAtom(_display
);
160 XSelectInput(_display
, _root
, PropertyChangeMask
);
162 // find a window manager supporting NETWM, waiting for it to load if we must
163 while (! (_shutdown
|| findSupportingWM()));
167 updateActiveWindow();
170 while (! _shutdown
) {
171 if (XPending(_display
)) {
173 XNextEvent(_display
, &e
);
180 XSelectInput(_display
, _root
, None
);
182 XCloseDisplay(_display
);
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