DNSSD

domainbrowser.cpp

00001 /* This file is part of the KDE project
00002  *
00003  * Copyright (C) 2004 Jakub Stachowski <qbast@go2.pl>
00004  *
00005  * This library is free software; you can redistribute it and/or
00006  * modify it under the terms of the GNU Library General Public
00007  * License as published by the Free Software Foundation; either
00008  * version 2 of the License, or (at your option) any later version.
00009  *
00010  * This library is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013  * Library General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU Library General Public License
00016  * along with this library; see the file COPYING.LIB.  If not, write to
00017  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00018  * Boston, MA 02110-1301, USA.
00019  */
00020 
00021 #include <qstringlist.h>
00022 #include "domainbrowser.h"
00023 #include "settings.h"
00024 #include "sdevent.h"
00025 #include "responder.h"
00026 #include "remoteservice.h"
00027 #include "query.h"
00028 #include "servicebrowser.h"
00029 #include <kapplication.h>
00030 
00031 namespace DNSSD
00032 {
00033 
00034 #ifdef HAVE_DNSSD
00035 void domain_callback(DNSServiceRef, DNSServiceFlags flags, uint32_t, DNSServiceErrorType errorCode, 
00036     const char *replyDomain, void *context);
00037 #endif
00038 
00039 class DomainBrowserPrivate : public Responder
00040 {
00041 public:
00042     DomainBrowserPrivate(DomainBrowser* owner) : Responder(), m_browseLAN(false), m_started(false), m_owner(owner) {}
00043     QStringList m_domains;
00044     virtual void customEvent(QCustomEvent* event);
00045     bool m_browseLAN;
00046     bool m_started;
00047     DomainBrowser* m_owner;
00048 };      
00049 
00050 void DomainBrowserPrivate::customEvent(QCustomEvent* event)
00051 {
00052     if (event->type()==QEvent::User+SD_ERROR) stop();
00053     if (event->type()==QEvent::User+SD_ADDREMOVE) {
00054         AddRemoveEvent *aev = static_cast<AddRemoveEvent*>(event);
00055         if (aev->m_op==AddRemoveEvent::Add) m_owner->gotNewDomain(aev->m_domain);
00056             else m_owner->gotRemoveDomain(aev->m_domain);
00057     }
00058 }
00059     
00060 DomainBrowser::DomainBrowser(QObject *parent) : QObject(parent)
00061 {
00062     d = new DomainBrowserPrivate(this);
00063     d->m_domains = Configuration::domainList();
00064     if (Configuration::browseLocal()) {
00065         d->m_domains+="local.";
00066         d->m_browseLAN=true;
00067     }
00068     connect(KApplication::kApplication(),SIGNAL(kipcMessage(int,int)),this,
00069             SLOT(domainListChanged(int,int)));
00070 }
00071 
00072 DomainBrowser::DomainBrowser(const QStringList& domains, bool recursive, QObject *parent) : QObject(parent)
00073 {
00074     d = new DomainBrowserPrivate(this);
00075     d->m_browseLAN = recursive;
00076     d->m_domains=domains;
00077 }
00078 
00079 
00080 DomainBrowser::~DomainBrowser()
00081 {
00082     delete d;
00083 }
00084 
00085 
00086 void DomainBrowser::startBrowse()
00087 {
00088     if (d->m_started) return;
00089     d->m_started=true;
00090     if (ServiceBrowser::isAvailable()!=ServiceBrowser::Working) return;
00091     QStringList::const_iterator itEnd = d->m_domains.end();
00092     for (QStringList::const_iterator it=d->m_domains.begin(); it!=itEnd; ++it ) emit domainAdded(*it);
00093 #ifdef HAVE_DNSSD       
00094     if (d->m_browseLAN) {
00095         DNSServiceRef ref;
00096         if (DNSServiceEnumerateDomains(&ref,kDNSServiceFlagsBrowseDomains,0,domain_callback,
00097         reinterpret_cast<void*>(d))==kDNSServiceErr_NoError) d->setRef(ref);
00098     }
00099 #endif
00100 }
00101 
00102 void DomainBrowser::gotNewDomain(const QString& domain)
00103 {
00104     if (d->m_domains.contains(domain)) return;
00105     d->m_domains.append(domain);
00106     emit domainAdded(domain);
00107 }
00108 
00109 void DomainBrowser::gotRemoveDomain(const QString& domain)
00110 {
00111     d->m_domains.remove(domain);
00112     emit domainRemoved(domain);
00113 }
00114 
00115 void DomainBrowser::domainListChanged(int message,int)
00116 {
00117     if (message!=KIPCDomainsChanged) return;
00118     bool was_started = d->m_started;
00119     if (d->isRunning()) d->stop(); // LAN query
00120     d->m_started = false;
00121     // remove all domains and resolvers
00122     if (was_started) {
00123         QStringList::const_iterator itEnd = d->m_domains.end();
00124         for (QStringList::const_iterator it=d->m_domains.begin(); it!=itEnd; ++it )
00125             emit domainRemoved(*it);
00126     }
00127     d->m_domains.clear();
00128     // now reread configuration and add domains
00129     Configuration::self()->readConfig();
00130     d->m_browseLAN = Configuration::browseLocal();
00131     d->m_domains = Configuration::domainList();
00132     if (Configuration::browseLocal()) d->m_domains+="local.";
00133     // this will emit domainAdded() for every domain if necessary
00134     if (was_started) startBrowse();
00135 }
00136 
00137 const QStringList& DomainBrowser::domains() const
00138 {
00139     return d->m_domains;
00140 }
00141 
00142 bool DomainBrowser::isRunning() const
00143 {
00144     return d->m_started;
00145 }
00146 
00147 void DomainBrowser::virtual_hook(int, void*)
00148 {}
00149 
00150 #ifdef HAVE_DNSSD
00151 void domain_callback(DNSServiceRef, DNSServiceFlags flags, uint32_t, DNSServiceErrorType errorCode, 
00152     const char *replyDomain, void *context)
00153 {
00154     QObject *obj = reinterpret_cast<QObject*>(context);
00155     if (errorCode != kDNSServiceErr_NoError) {
00156         ErrorEvent err;
00157         QApplication::sendEvent(obj, &err);
00158     } else {
00159         AddRemoveEvent arev((flags & kDNSServiceFlagsAdd) ? AddRemoveEvent::Add :
00160             AddRemoveEvent::Remove, QString::null, QString::null, 
00161             DNSToDomain(replyDomain), !(flags & kDNSServiceFlagsMoreComing));
00162         QApplication::sendEvent(obj, &arev);
00163     }
00164 }
00165 #endif
00166 
00167 }
00168 #include "domainbrowser.moc"
DNSSD

domainbrowser.cpp

DNSSD

API Reference
