# dnssd Library API Documentation

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# remoteservice.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., 59 Temple Place - Suite 330,
    00018  * Boston, MA 02111-1307, USA.
    00019  */
    00020
    00021 #include <config.h>
    00022
    00023 #include <qeventloop.h>
    00024 #include <qapplication.h>
    00025 #ifdef HAVE_SYS_TYPES_H
    00026 #include <sys/types.h>
    00027 #endif
    00028 #include <netinet/in.h>
    00029 #include "remoteservice.h"
    00030 #include "responder.h"
    00031 #include "sdevent.h"
    00032 #include <kdebug.h>
    00033
    00034 namespace DNSSD
    00035 {
    00036 #ifdef HAVE_DNSSD
    00037 void resolve_callback    (    DNSServiceRef,
    00038                 DNSServiceFlags,
    00039                 uint32_t,
    00040                 DNSServiceErrorType                 errorCode,
    00041                 const char*,
    00042                 const char                          *hosttarget,
    00043                 uint16_t                            port,
    00044                 uint16_t                            txtLen,
    00045                 const char                          *txtRecord,
    00046                 void                                *context
    00047              );
    00048
    00049 #endif
    00050 class RemoteServicePrivate : public Responder
    00051 {
    00052 public:
    00053     RemoteServicePrivate() : Responder(), m_resolved(false)
    00054     {};
    00055     bool m_resolved;
    00056 };
    00057
    00058 RemoteService::RemoteService(const QString& label)
    00059 {
    00060     decode(label);
    00061     d =  new RemoteServicePrivate();
    00062 }
    00063 RemoteService::RemoteService(const QString& name,const QString& type,const QString& domain)
    00064         : ServiceBase(name, type, domain)
    00065 {
    00066     d = new RemoteServicePrivate();
    00067 }
    00068
    00069 RemoteService::~RemoteService()
    00070 {
    00071     delete d;
    00072 }
    00073
    00074 bool RemoteService::resolve()
    00075 {
    00076     resolveAsync();
    00077     while (d->isRunning() && !d->m_resolved) d->process();
    00078     d->stop();
    00079     return d->m_resolved;
    00080 }
    00081
    00082 void RemoteService::resolveAsync()
    00083 {
    00084     if (d->isRunning()) return;
    00085     d->m_resolved = false;
    00086     kdDebug() << this << ":Starting resolve of : " << m_serviceName << " " << m_type << " " << m_domain << "\n";
    00087 #ifdef HAVE_DNSSD
    00088     DNSServiceRef ref;
    00089     if (DNSServiceResolve(&ref,0,0,m_serviceName.utf8(), m_type.ascii(),
    00090         domainToDNS(m_domain),resolve_callback,reinterpret_cast<void*>(this))
    00091         == kDNSServiceErr_NoError) d->setRef(ref);
    00092 #endif
    00093     if (!d->isRunning()) emit resolved(false);
    00094 }
    00095
    00096 bool RemoteService::isResolved() const
    00097 {
    00098     return d->m_resolved;
    00099 }
    00100
    00101 void RemoteService::customEvent(QCustomEvent* event)
    00102 {
    00103     if (event->type() == QEvent::User+SD_ERROR) {
    00104         d->stop();
    00105         d->m_resolved=false;
    00106         emit resolved(false);
    00107     }
    00108     if (event->type() == QEvent::User+SD_RESOLVE) {
    00109         ResolveEvent* rev = static_cast<ResolveEvent*>(event);
    00110         m_hostName = rev->m_hostname;
    00111         m_port = rev->m_port;
    00112         m_textData = rev->m_txtdata;
    00113         d->m_resolved = true;
    00114         emit resolved(true);
    00115     }
    00116 }
    00117
    00118 void RemoteService::virtual_hook(int, void*)
    00119 {
    00120     // BASE::virtual_hook(int, void*);
    00121 }
    00122
    00123 QDataStream & operator<< (QDataStream & s, const RemoteService & a)
    00124 {
    00125     s << (static_cast<ServiceBase>(a));
    00126     Q_INT8 resolved = a.d->m_resolved ? 1:0;
    00127     s << resolved;
    00128     return s;
    00129 }
    00130
    00131 QDataStream & operator>> (QDataStream & s, RemoteService & a)
    00132 {
    00133     // stop any possible resolve going on
    00134     a.d->stop();
    00135     Q_INT8 resolved;
    00136     operator>>(s,(static_cast<ServiceBase&>(a)));
    00137     s >> resolved;
    00138     a.d->m_resolved = (resolved == 1);
    00139     return s;
    00140 }
    00141
    00142
    00143 #ifdef HAVE_DNSSD
    00144 void resolve_callback    (    DNSServiceRef,
    00145                   DNSServiceFlags,
    00146                   uint32_t,
    00147                   DNSServiceErrorType                 errorCode,
    00148                   const char*,
    00149                   const char                          *hosttarget,
    00150                   uint16_t                            port,
    00151                   uint16_t                            txtLen,
    00152                   const char                          *txtRecord,
    00153                   void                                *context
    00154              )
    00155 {
    00156     QObject *obj = reinterpret_cast<QObject*>(context);
    00157     if (errorCode != kDNSServiceErr_NoError) {
    00158         ErrorEvent err;
    00159         QApplication::sendEvent(obj, &err);
    00160         return;
    00161     }
    00162     char key[256];
    00163     const char *value;
    00164     int index=0;
    00165     unsigned char valueLen;
    00166     kdDebug() << "Resolve callback\n";
    00167     QMap<QString,QString> map;
    00168     while (TXTRecordGetItemAtIndex(txtLen,txtRecord,index++,256,key,&valueLen,
    00169         reinterpret_cast<const void **>(&value)) == kDNSServiceErr_NoError)
    00170         if (value) map[QString::fromUtf8(key)]=QString::fromUtf8(value,valueLen);
    00171             else map[QString::fromUtf8(key)]=QString::null;
    00172     ResolveEvent rev(DNSToDomain(hosttarget),ntohs(port),map);
    00173     QApplication::sendEvent(obj, &rev);
    00174 }
    00175 #endif
    00176
    00177
    00178 }
    00179
    00180 #include "remoteservice.moc"

This file is part of the documentation for dnssd Library Version 3.4.1.
Documentation copyright © 1996-2004 the KDE developers.
Generated on Sat Jun 11 20:28:18 2005 by doxygen 1.4.1 written by Dimitri van Heesch, © 1997-2003