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
|
/* 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 <signal.h>
#include <errno.h>
#include <qstringlist.h>
#include <qfile.h>
#include "domainbrowser.h"
#include "responder.h"
#include "query.h"
#include "servicebrowser.h"
#include <avahi-client/client.h>
#include <config.h>
namespace DNSSD
{
const QString ServiceBrowser::AllServices = "_services._dns-sd._udp";
class ServiceBrowserPrivate
{
public:
ServiceBrowserPrivate() : m_running(false)
{}
QValueList<RemoteService::Ptr> m_services;
QValueList<RemoteService::Ptr> m_duringResolve;
QStringList m_types;
DomainBrowser* m_domains;
int m_flags;
bool m_running;
bool m_finished;
QDict<Query> resolvers;
};
ServiceBrowser::ServiceBrowser(const QString& type,DomainBrowser* domains,bool autoResolve)
{
if (domains) init(type,domains,autoResolve ? AutoResolve : 0);
else init(type,new DomainBrowser(this),autoResolve ? AutoResolve|AutoDelete : AutoDelete);
}
ServiceBrowser::ServiceBrowser(const QStringList& types,DomainBrowser* domains,int flags)
{
if (domains) init(types,domains,flags);
else init(types,new DomainBrowser(this),flags|AutoDelete);
}
void ServiceBrowser::init(const QStringList& type,DomainBrowser* domains,int flags)
{
d = new ServiceBrowserPrivate();
d->resolvers.setAutoDelete(true);
d->m_types=type;
d->m_flags=flags;
d->m_domains = domains;
connect(d->m_domains,SIGNAL(domainAdded(const QString& )),this,SLOT(addDomain(const QString& )));
connect(d->m_domains,SIGNAL(domainRemoved(const QString& )),this,
SLOT(removeDomain(const QString& )));
}
ServiceBrowser::ServiceBrowser(const QString& type,const QString& domain,bool autoResolve)
{
init(type,new DomainBrowser(domain,false,this),autoResolve ? AutoResolve|AutoDelete : AutoDelete);
}
ServiceBrowser::ServiceBrowser(const QString& type,const QString& domain,int flags)
{
init(type,new DomainBrowser(domain,false,this),flags | AutoDelete);
}
const ServiceBrowser::State ServiceBrowser::isAvailable()
{
AvahiClientState s = Responder::self().state();
#ifdef AVAHI_API_0_6
return (s==AVAHI_CLIENT_FAILURE) ? Stopped : Working;
#else
return (s==AVAHI_CLIENT_S_INVALID || s==AVAHI_CLIENT_DISCONNECTED) ? Stopped : Working;
#endif
}
ServiceBrowser::~ ServiceBrowser()
{
if (d->m_flags & AutoDelete) delete d->m_domains;
delete d;
}
const DomainBrowser* ServiceBrowser::browsedDomains() const
{
return d->m_domains;
}
void ServiceBrowser::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)));
QValueList<RemoteService::Ptr>::Iterator it = d->m_duringResolve.begin();
QValueList<RemoteService::Ptr>::Iterator itEnd = d->m_duringResolve.end();
while ( it!= itEnd && svr!= (*it)) ++it;
if (it != itEnd) {
if (success) {
d->m_services+=(*it);
emit serviceAdded(svr);
}
d->m_duringResolve.remove(it);
queryFinished();
}
}
void ServiceBrowser::startBrowse()
{
if (d->m_running) return;
d->m_running=true;
if (isAvailable()!=Working) return;
if (d->m_domains->isRunning()) {
QStringList::const_iterator itEnd = d->m_domains->domains().end();
for ( QStringList::const_iterator it = d->m_domains->domains().begin(); it != itEnd; ++it )
addDomain(*it);
} else d->m_domains->startBrowse();
}
void ServiceBrowser::gotNewService(RemoteService::Ptr svr)
{
if (findDuplicate(svr)==(d->m_services.end())) {
if (d->m_flags & AutoResolve) {
connect(svr,SIGNAL(resolved(bool )),this,SLOT(serviceResolved(bool )));
d->m_duringResolve+=svr;
svr->resolveAsync();
} else {
d->m_services+=svr;
emit serviceAdded(svr);
}
}
}
void ServiceBrowser::gotRemoveService(RemoteService::Ptr svr)
{
QValueList<RemoteService::Ptr>::Iterator it = findDuplicate(svr);
if (it!=(d->m_services.end())) {
emit serviceRemoved(*it);
d->m_services.remove(it);
}
}
void ServiceBrowser::removeDomain(const QString& domain)
{
while (d->resolvers[domain]) d->resolvers.remove(domain);
QValueList<RemoteService::Ptr>::Iterator it = d->m_services.begin();
while (it!=d->m_services.end())
// use section to skip possible trailing dot
if ((*it)->domain().section('.',0) == domain.section('.',0)) {
emit serviceRemoved(*it);
it = d->m_services.remove(it);
} else ++it;
}
void ServiceBrowser::addDomain(const QString& domain)
{
if (!d->m_running) return;
if (!(d->resolvers[domain])) {
QStringList::ConstIterator itEnd = d->m_types.end();
for (QStringList::ConstIterator it=d->m_types.begin(); it!=itEnd; ++it) {
Query* b = new Query((*it),domain);
connect(b,SIGNAL(serviceAdded(DNSSD::RemoteService::Ptr)),this,
SLOT(gotNewService(DNSSD::RemoteService::Ptr)));
connect(b,SIGNAL(serviceRemoved(DNSSD::RemoteService::Ptr )),this,
SLOT(gotRemoveService(DNSSD::RemoteService::Ptr)));
connect(b,SIGNAL(finished()),this,SLOT(queryFinished()));
b->startQuery();
d->resolvers.insert(domain,b);
}
}
}
void ServiceBrowser::queryFinished()
{
if (allFinished()) emit finished();
}
bool ServiceBrowser::allFinished()
{
if (d->m_duringResolve.count()) return false;
bool all = true;
QDictIterator<Query> it(d->resolvers);
for ( ; it.current(); ++it) all&=(*it)->isFinished();
return all;
}
const QValueList<RemoteService::Ptr>& ServiceBrowser::services() const
{
return d->m_services;
}
void ServiceBrowser::virtual_hook(int, void*)
{}
QValueList<RemoteService::Ptr>::Iterator ServiceBrowser::findDuplicate(RemoteService::Ptr src)
{
QValueList<RemoteService::Ptr>::Iterator itEnd = d->m_services.end();
for (QValueList<RemoteService::Ptr>::Iterator it = d->m_services.begin(); it!=itEnd; ++it)
if ((src->type()==(*it)->type()) && (src->serviceName()==(*it)->serviceName()) &&
(src->domain() == (*it)->domain())) return it;
return itEnd;
}
}
#include "servicebrowser.moc"
|
