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
|
/*
* Copyright (C) 2004 Girish Ramakrishnan All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
// $Id: tdedocker.cpp,v 1.24 2005/02/04 10:25:46 cs19713 Exp $
#include <tqdir.h>
#include <tqfile.h>
#include <tqtextcodec.h>
#include <tqtextstream.h>
#include <tqstring.h>
#include <tdecmdlineargs.h>
#include <tdeconfig.h>
#include <tdelocale.h>
#include "trace.h"
#include "traylabelmgr.h"
#include "tdedocker.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#define TMPFILE_PREFIX TQString("/tmp/tdedocker.")
TDEDocker::TDEDocker()
: TDEApplication(), mTrayLabelMgr(NULL)
{
// Set ourselves up to be called from the application loop
connect(&mInitTimer, SIGNAL(timeout()), this, SLOT(doInit()));
mInitTimer.start(0, true);
// Required so that the saved config is correctly loaded
// (see TrayLabelMgr::doRestoreSession() for usage)
if (TDEApplication::kApplication()->isRestored())
{
TDEApplication::kApplication()->sessionConfig();
}
}
void TDEDocker::doInit()
{
INIT_TRACE();
/*
* Detect and transfer control to previous instance (if one exists)
* _TDEDOCKER_RUNNING is a X Selection. We start out by trying to locate the
* selection owner. If someone else owns it, transfer control to that
* instance of TDEDocker
*/
Display *display = TQPaintDevice::x11AppDisplay();
Atom tdedocker = XInternAtom(display, "_TDEDOCKER_RUNNING", False);
Window prev_instance = XGetSelectionOwner(display, tdedocker);
if (prev_instance == None)
{
mSelectionOwner = XCreateSimpleWindow(display, tqt_xrootwin(), 1, 1, 1, 1, 1, 1, 1);
XSetSelectionOwner(display, tdedocker, mSelectionOwner, CurrentTime);
TRACE("Selection owner set to 0x%x", (unsigned) mSelectionOwner);
mTrayLabelMgr = TrayLabelMgr::instance();
}
else
notifyPreviousInstance(prev_instance); // does not return
}
void TDEDocker::notifyPreviousInstance(Window prevInstance)
{
Display *display = TQPaintDevice::x11AppDisplay();
TRACE("Notifying previous instance [%x]", (unsigned) prevInstance);
// Dump all arguments in temporary file
TQFile f(TMPFILE_PREFIX + TQString().setNum(getpid()));
if (!f.open(IO_WriteOnly)) return;
TQTextStream s(&f);
// Its normal to use TDEDocker in startup scripts. We could be getting restored
// from a session at the same time, so in such case pass along the info.
if (isRestored())
{
s << TDECmdLineArgs::appName() << " --restore-internal";
}
else
{
TDECmdLineArgs *args = TDECmdLineArgs::parsedArgs();
s << TDECmdLineArgs::appName();
for (int i = 0; i < args->count(); i++)
{
s << " " << args->arg(i);
}
}
f.close();
/*
* Now tell our previous instance that we came to pass. Actually, it can
* figure it out itself using PropertyNotify events but this is a lot nicer
*/
XClientMessageEvent dock_event;
memset(&dock_event, 0, sizeof(XClientMessageEvent));
dock_event.display = display;
dock_event.window = prevInstance;
dock_event.send_event = True;
dock_event.type = ClientMessage;
dock_event.message_type = 0x220679; // it all started this day
dock_event.format = 8;
dock_event.data.l[0] = 0xBABE; // love letter ;)
dock_event.data.l[1] = getpid();
XSendEvent(display, prevInstance, False, 0, (XEvent *) &dock_event);
XSync(display, False);
quit();
}
/*
* The X11 Event filter called by TQt. Look out for ClientMessage events from
* our new instance
*/
bool TDEDocker::x11EventFilter(XEvent * event)
{
if (event->type == ClientMessage)
{
// look for requests from a new instance of tdedocker
XClientMessageEvent *client = (XClientMessageEvent *) event;
if (!(client->message_type == 0x220679 && client->data.l[0] == 0xBABE))
return FALSE;
TRACE("ClientMessage from PID=%ld. SelOwn=0x%x",
client->data.l[1], (unsigned) mSelectionOwner);
char tmp[50];
struct stat buf;
sprintf(tmp, TQString(TMPFILE_PREFIX+"%ld").local8Bit(), client->data.l[1]);
if (stat(tmp, &buf) || (getuid()!=buf.st_uid))
{
/*
* We make sure that the owner of this process and the owner of the file
* are the same. This will prevent someone from executing arbitrary
* programs by sending client message. Of course, you can send a message
* only if you are authenticated to the X session and have permission to
* create files in TMPFILE_PREFIX. So this code is there just for the
* heck of it.
*/
TRACE("User %i is trying something fishy...", buf.st_uid);
unlink(tmp);
return TRUE;
}
TQFile f(tmp);
if (!f.open(IO_ReadOnly)) return TRUE;
TQTextStream s(&f);
TQStringList argv;
while (!s.atEnd()) { TQString x; s >> x; argv += x; }
f.close();
unlink(tmp); // delete the tmp file
mTrayLabelMgr->processCommand(argv);
return TRUE;
}
else
{
if (mTrayLabelMgr->x11EventFilter(event))
{
return true;
}
return TDEApplication::x11EventFilter(event);
}
}
#include "tdedocker.moc"
|
