summaryrefslogtreecommitdiffstats
path: root/kcontrol/dnssd/kcmdnssd.cpp
blob: 3b3f85f964e6926bf9c89a49ba0c0c83618220ad (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
/***************************************************************************
 *   Copyright (C) 2004,2005 by Jakub Stachowski                           *
 *   qbast@go2.pl                                                          *
 *                                                                         *
 *   This program 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 program 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 program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.             *
 ***************************************************************************/

#include <sys/stat.h>
#include <config.h>

#include <tqlayout.h>
#include <tqfile.h>
#include <tqgroupbox.h>
#include <tqradiobutton.h>
#include <tqtimer.h>
#include <tqtabwidget.h>
#include <tqcheckbox.h>
#include <tqprocess.h>
#include <tqcursor.h>
#include <tqbuttongroup.h>

#include <klocale.h>
#include <kglobal.h>
#include <kparts/genericfactory.h>
#include <kprocess.h>
#include <klineedit.h>
#include <kpassdlg.h>
#include <ksimpleconfig.h>
#include <kapplication.h>
#include <kmessagebox.h>

#include "kcmdnssd.h"
#include <dnssd/settings.h>
#include <dnssd/domainbrowser.h>
#include <kipc.h>

#define MDNSD_CONF "/etc/mdnsd.conf"
#define MDNSD_PID "/var/run/mdnsd.pid"

typedef KGenericFactory<KCMDnssd, TQWidget> KCMDnssdFactory;
K_EXPORT_COMPONENT_FACTORY( kcm_kdnssd, KCMDnssdFactory("kcmkdnssd"))

KCMDnssd::KCMDnssd(TQWidget *parent, const char *name, const TQStringList&)
		: ConfigDialog(parent, name), m_wdchanged(false)
{
	setAboutData(new KAboutData(I18N_NOOP("kcm_kdnssd"),
	                            I18N_NOOP("ZeroConf configuration"),0,0,KAboutData::License_GPL,
	                            I18N_NOOP("(C) 2004,2005 Jakub Stachowski")));
	setQuickHelp(i18n("Setup services browsing with ZeroConf"));
	if (geteuid()!=0) tabs->removePage(tab_2); // normal user cannot change wide-area settings
	// show only global things in 'administrator mode' to prevent confusion
		else if (getenv("KDESU_USER")!=0) tabs->removePage(tab); 
	addConfig(DNSSD::Configuration::self(),this);
	// it is host-wide setting so it has to be in global config file
	domain = new KSimpleConfig( TQString::tqfromLatin1( KDE_CONFDIR "/kdnssdrc" ));
	domain->setGroup("publishing");
	load();
	connect(hostedit,TQT_SIGNAL(textChanged(const TQString&)),this,TQT_SLOT(wdchanged()));
	connect(secretedit,TQT_SIGNAL(textChanged(const TQString&)),this,TQT_SLOT(wdchanged()));
	connect(domainedit,TQT_SIGNAL(textChanged(const TQString&)),this,TQT_SLOT(wdchanged()));
	connect(enableZeroconf,TQT_SIGNAL(toggled(bool)),this,TQT_SLOT(enableZeroconfChanged(bool)));
	m_enableZeroconfChanged=false;
	if (DNSSD::Configuration::self()->publishDomain().isEmpty()) WANButton->setEnabled(false);
	kcfg_PublishType->hide(); //unused with Avahi
}

KCMDnssd::~KCMDnssd()
{
	delete domain;
}

void KCMDnssd::save()
{
	setCursor(TQCursor(Qt::BusyCursor));
	KCModule::save();
	if (geteuid()==0 && m_wdchanged) saveMdnsd(); 
	domain->setFileWriteMode(0644); // this should be readable for everyone
	domain->writeEntry("PublishDomain",domainedit->text());
	domain->sync();
	KIPC::sendMessageAll((KIPC::Message)KIPCDomainsChanged);
	if (m_enableZeroconfChanged) {

	  TQString scaryMessage = i18n("Enabling local network browsing will open a network port (5353) on your computer.  If security problems are discovered in the zeroconf server, remote attackers could access your computer as the \"avahi\" user.");

	  KProcess *proc = new KProcess;

	  *proc << "tdesu";

	  if (enableZeroconf->isChecked()) {
	    if (KMessageBox::warningYesNo( this, scaryMessage, i18n("Enable Zeroconf Network Browsing"), KGuiItem(i18n("Enable Browsing")), KGuiItem(i18n("Don't Enable Browsing")) ) == KMessageBox::Yes) {	    

	      *proc << "/usr/share/avahi/enable_avahi 1";
	      proc->start(KProcess::Block);
	    } else {
	      enableZeroconf->setChecked(false);
	    }
	  } else {
	    *proc << "/usr/share/avahi/enable_avahi 0";
	    proc->start(KProcess::Block);
	  }
	}
	setCursor(TQCursor(Qt::ArrowCursor));
}

void KCMDnssd::load()
{
	if (geteuid()==0) loadMdnsd();
	enableZeroconf->setChecked(false);
	TQProcess avahiStatus(TQString("/usr/share/avahi/avahi_status"), TQT_TQOBJECT(this), "avahiStatus");
	avahiStatus.start();
	while (avahiStatus.isRunning()) {
	  kapp->processEvents();
	}
	int exitStatus = avahiStatus.exitqStatus();
	if (exitStatus == 0) { // disabled
	  enableZeroconf->setChecked(false);
	} else if (exitStatus == 1) { // enabled 
	  enableZeroconf->setChecked(true);
	} else if (exitStatus == 2) { // custom setup
	  enableZeroconf->setEnabled(false);
	}
	KCModule::load();
}

// hack to work around not working isModified() for KPasswordEdit
void KCMDnssd::wdchanged()
{
	WANButton->setEnabled(!domainedit->text().isEmpty() && !hostedit->text().isEmpty());
	changed();
	m_wdchanged=true;
}

void KCMDnssd::enableZeroconfChanged(bool)
{
	changed();
	m_enableZeroconfChanged=true;
}

void KCMDnssd::loadMdnsd()
{
	TQFile f(MDNSD_CONF);
	if (!f.open(IO_ReadWrite)) return;
	TQTextStream stream(&f);
	TQString line;
	while (!stream.atEnd()) {
		line = stream.readLine();
		mdnsdLines.insert(line.section(' ',0,0,TQString::SectionSkipEmpty),
			line.section(' ',1,-1,TQString::SectionSkipEmpty));
		}
	if (!mdnsdLines["zone"].isNull()) domainedit->setText(mdnsdLines["zone"]);
	if (!mdnsdLines["hostname"].isNull()) hostedit->setText(mdnsdLines["hostname"]);
	if (!mdnsdLines["secret-64"].isNull()) secretedit->setText(mdnsdLines["secret-64"]);
}		
	
bool KCMDnssd::saveMdnsd()
{
	mdnsdLines["zone"]=domainedit->text();
	mdnsdLines["hostname"]=hostedit->text();
	if (!secretedit->text().isEmpty()) mdnsdLines["secret-64"]=TQString(secretedit->password());
		else mdnsdLines.remove("secret-64");
	TQFile f(MDNSD_CONF);
	bool newfile=!f.exists();
	if (!f.open(IO_WriteOnly)) return false; 
	TQTextStream stream(&f);
	for (TQMap<TQString,TQString>::ConstIterator it=mdnsdLines.begin();it!=mdnsdLines.end();
		++it) stream << it.key() << " " << (*it) << "\n";
	f.close();
	// if it is new file, then make it only accessible for root as it can contain shared
	// secret for dns server. 
	if (newfile) chmod(MDNSD_CONF,0600); 
	f.setName(MDNSD_PID);
	if (!f.open(IO_ReadOnly)) return true; // it is not running so no need to signal
	TQString line;
	if (f.readLine(line,16)<1) return true;
	unsigned int pid = line.toUInt();
	if (pid==0) return true;           // not a pid
	kill(pid,SIGHUP);
	return true;
}
	
#include "kcmdnssd.moc"