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
|
/* This file is part of the KDE project
*
* Copyright (C) 2004 Jakub Stachowski <qbast@go2.pl>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "mdnsd-servicebrowser_p.h"
#include "domainbrowser.h"
#include "servicebrowser.h"
#include "mdnsd-responder.h"
#include "remoteservice.h"
#include "mdnsd-sdevent.h"
#include <dns_sd.h>
#include <QtCore/QStringList>
#include <QtCore/QHash>
#include <QtCore/QCoreApplication>
#include <QtCore/QTimer>
#include <QtNetwork/QHostInfo>
#define TIMEOUT_WAN 2000
#define TIMEOUT_LAN 200
namespace DNSSD
{
void query_callback (DNSServiceRef, DNSServiceFlags flags, uint32_t, DNSServiceErrorType errorCode,
const char *serviceName, const char *regtype, const char *replyDomain, void *context);
ServiceBrowser::ServiceBrowser(const QString& type,bool autoResolve,const QString& domain, const QString& subtype)
:d(new ServiceBrowserPrivate(this))
{
d->m_type=type;
d->m_autoResolve=autoResolve;
d->m_domain=domain;
d->m_subtype=subtype;
d->timeout.setSingleShot(true);
connect(&d->timeout,SIGNAL(timeout()),d,SLOT(onTimeout()));
}
ServiceBrowser::State ServiceBrowser::isAvailable()
{
// DNSServiceRef ref;
// bool ok (DNSServiceCreateConnection(&ref)==kDNSServiceErr_NoError);
// if (ok) DNSServiceRefDeallocate(ref);
// return (ok) ? Working : Stopped;
return Working;
}
ServiceBrowser::~ ServiceBrowser()
{
delete d;
}
bool ServiceBrowser::isAutoResolving() const
{
return d->m_autoResolve;
}
void ServiceBrowserPrivate::serviceResolved(bool success)
{
QObject* sender_obj = const_cast<QObject*>(sender());
RemoteService* svr = static_cast<RemoteService*>(sender_obj);
disconnect(svr,SIGNAL(resolved(bool)),this,SLOT(serviceResolved(bool)));
QList<RemoteService::Ptr>::Iterator it = m_duringResolve.begin();
QList<RemoteService::Ptr>::Iterator itEnd = m_duringResolve.end();
while ( it!= itEnd && svr!= (*it).data()) ++it;
if (it != itEnd) {
if (success) {
m_services+=(*it);
emit m_parent->serviceAdded(RemoteService::Ptr(svr));
}
m_duringResolve.erase(it);
queryFinished();
}
}
void ServiceBrowser::startBrowse()
{
if (d->isRunning()) return;
d->m_finished = false;
DNSServiceRef ref;
QString fullType=d->m_type;
if (!d->m_subtype.isEmpty()) fullType=d->m_subtype+"._sub."+d->m_type;
if (DNSServiceBrowse(&ref,0,0, fullType.toLatin1().constData(),
domainToDNS(d->m_domain),query_callback,reinterpret_cast<void*>(d))
== kDNSServiceErr_NoError) d->setRef(ref);
if (!d->isRunning()) emit finished();
else d->timeout.start(domainIsLocal(d->m_domain) ? TIMEOUT_LAN : TIMEOUT_WAN);
}
void ServiceBrowserPrivate::queryFinished()
{
if (!m_duringResolve.count() && m_finished) emit m_parent->finished();
}
QList<RemoteService::Ptr> ServiceBrowser::services() const
{
return d->m_services;
}
void ServiceBrowser::virtual_hook(int, void*)
{}
RemoteService::Ptr ServiceBrowserPrivate::find(RemoteService::Ptr s, const QList<RemoteService::Ptr>& where) const
{
Q_FOREACH (const RemoteService::Ptr& i, where) if (*s==*i) return i;
return RemoteService::Ptr();
}
void ServiceBrowserPrivate::customEvent(QEvent* event)
{
if (event->type()==QEvent::User+SD_ERROR) {
stop();
m_finished=false;
queryFinished();
}
if (event->type()==QEvent::User+SD_ADDREMOVE) {
AddRemoveEvent *aev = static_cast<AddRemoveEvent*>(event);
// m_type has useless trailing dot
RemoteService::Ptr svr(new RemoteService(aev->m_name,aev->m_type.left(aev->m_type.length()-1),aev->m_domain));
if (aev->m_op==AddRemoveEvent::Add) {
if (m_autoResolve) {
connect(svr.data(),SIGNAL(resolved(bool)),this,SLOT(serviceResolved(bool)));
m_duringResolve+=svr;
svr->resolveAsync();
} else {
m_services+=svr;
emit m_parent->serviceAdded(svr);
}
}
else {
RemoteService::Ptr found=find(svr, m_duringResolve);
if (!found.isNull()) m_duringResolve.removeAll(found);
else {
found=find(svr, m_services);
if (!found.isNull()) {
emit m_parent->serviceRemoved(found);
m_services.removeAll(found);
}
}
}
m_finished = aev->m_last;
if (m_finished) queryFinished();
}
}
void ServiceBrowserPrivate::onTimeout()
{
m_finished=true;
queryFinished();
}
void query_callback (DNSServiceRef, DNSServiceFlags flags, uint32_t, DNSServiceErrorType errorCode,
const char *serviceName, const char *regtype, const char *replyDomain,
void *context)
{
QObject *obj = reinterpret_cast<QObject*>(context);
if (errorCode != kDNSServiceErr_NoError) {
ErrorEvent err;
QCoreApplication::sendEvent(obj, &err);
} else {
AddRemoveEvent arev((flags & kDNSServiceFlagsAdd) ? AddRemoveEvent::Add :
AddRemoveEvent::Remove, QString::fromUtf8(serviceName), regtype,
DNSToDomain(replyDomain), !(flags & kDNSServiceFlagsMoreComing));
QCoreApplication::sendEvent(obj, &arev);
}
}
// TODO: Please Implement Me - Using a KResolver (if not natively)
QHostAddress ServiceBrowser::resolveHostName(const QString &hostname)
{
return QHostAddress();
}
QString ServiceBrowser::getLocalHostName()
{
return QHostInfo::localHostName();
}
}
#include "servicebrowser.moc"
#include "mdnsd-servicebrowser_p.moc"
|
