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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commitce4a32fe52ef09d8f5ff1dd22c001110902b60a2 (patch)
tree5ac38a06f3dde268dc7927dc155896926aaf7012 /dnssd/servicebrowser.cpp
downloadtdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.tar.gz
tdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'dnssd/servicebrowser.cpp')
-rw-r--r--dnssd/servicebrowser.cpp232
1 files changed, 232 insertions, 0 deletions
diff --git a/dnssd/servicebrowser.cpp b/dnssd/servicebrowser.cpp
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+++ b/dnssd/servicebrowser.cpp
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+/* 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 "query.h"
+#include "servicebrowser.h"
+#include <config.h>
+#ifdef HAVE_DNSSD
+#include <dns_sd.h>
+#endif
+
+#define MDNSD_PID "/var/run/mdnsd.pid"
+
+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()
+{
+#ifdef HAVE_DNSSD
+ QFile f(MDNSD_PID);
+ if (!f.open(IO_ReadOnly)) return Stopped; // no pidfile
+ QString line;
+ if (f.readLine(line,16)<1) return Stopped;
+ unsigned int pid = line.toUInt();
+ if (pid==0) return Stopped; // not a pid
+ return (kill(pid,0)==0 || errno==EPERM) ? Working : Stopped;
+ // signal 0 only checks if process is running, mdnsd is probably owned by 'nobody' so we will
+ // get EPERM, if mdnsd is not running error will be ESRCH
+
+#else
+ return Unsupported;
+#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"