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DNSSD

remoteservice.cpp

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/* This file is part of the KDE project
 *
 * Copyright (C) 2004, 2005 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 <config.h>

#include <qeventloop.h>
#include <qapplication.h>
#include <kurl.h>
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <netinet/in.h>
#include "remoteservice.h"
#include "responder.h"
#include "sdevent.h"
#include <kdebug.h>

namespace DNSSD
{
#ifdef HAVE_DNSSD
void resolve_callback    (    DNSServiceRef,
                DNSServiceFlags,
                uint32_t,
                DNSServiceErrorType                 errorCode,
                const char*,
                const char                          *hosttarget,
                uint16_t                            port,
                uint16_t                            txtLen,
                const unsigned char                 *txtRecord,
                void                                *context
             );

#endif
class RemoteServicePrivate : public Responder
{
public:
    RemoteServicePrivate() : Responder(), m_resolved(false)
    {};
    bool m_resolved;
};

RemoteService::RemoteService(const QString& label)
{
    decode(label);
    d =  new RemoteServicePrivate();
}
RemoteService::RemoteService(const QString& name,const QString& type,const QString& domain)
        : ServiceBase(name, type, domain)
{
    d = new RemoteServicePrivate();
}

RemoteService::RemoteService(const KURL& url)
{
    d = new RemoteServicePrivate();
    if (!url.isValid()) return;
    if (url.protocol()!="invitation") return;
    if (!url.hasPath()) return;
    m_hostName = url.host();
    m_port = url.port();
    m_type = url.path().section('/',1,1);
    m_serviceName = url.path().section('/',2);
    m_textData = url.queryItems();
    d->m_resolved=true;
}

RemoteService::~RemoteService()
{
    delete d;
}

bool RemoteService::resolve()
{
    resolveAsync();
    while (d->isRunning() && !d->m_resolved) d->process();
    d->stop();
    return d->m_resolved;
}

void RemoteService::resolveAsync()
{
    if (d->isRunning()) return;
    d->m_resolved = false;
    kdDebug() << this << ":Starting resolve of : " << m_serviceName << " " << m_type << " " << m_domain << "\n";
#ifdef HAVE_DNSSD
    DNSServiceRef ref;
    if (DNSServiceResolve(&ref,0,0,m_serviceName.utf8(), m_type.ascii(), 
        domainToDNS(m_domain),(DNSServiceResolveReply)resolve_callback,reinterpret_cast<void*>(this))
        == kDNSServiceErr_NoError) d->setRef(ref);
#endif
    if (!d->isRunning()) emit resolved(false);
}

bool RemoteService::isResolved() const
{
    return d->m_resolved;
}

void RemoteService::customEvent(QCustomEvent* event)
{
    if (event->type() == QEvent::User+SD_ERROR) {
        d->stop();
        d->m_resolved=false;
        emit resolved(false);
    }
    if (event->type() == QEvent::User+SD_RESOLVE) {
        ResolveEvent* rev = static_cast<ResolveEvent*>(event);
        m_hostName = rev->m_hostname;
        m_port = rev->m_port;
        m_textData = rev->m_txtdata;
        d->m_resolved = true;
        emit resolved(true);
    }
}

void RemoteService::virtual_hook(int, void*)
{
    // BASE::virtual_hook(int, void*);
}

QDataStream & operator<< (QDataStream & s, const RemoteService & a)
{
    s << (static_cast<ServiceBase>(a));
    Q_INT8 resolved = a.d->m_resolved ? 1:0;
    s << resolved;
    return s;
}

QDataStream & operator>> (QDataStream & s, RemoteService & a)
{
    // stop any possible resolve going on
    a.d->stop();
    Q_INT8 resolved;
    operator>>(s,(static_cast<ServiceBase&>(a)));
    s >> resolved;
    a.d->m_resolved = (resolved == 1);  
    return s;
}


#ifdef HAVE_DNSSD
void resolve_callback    (    DNSServiceRef,
                  DNSServiceFlags,
                  uint32_t,
                  DNSServiceErrorType                 errorCode,
                  const char*,
                  const char                          *hosttarget,
                  uint16_t                            port,
                  uint16_t                            txtLen,
                  const unsigned char                 *txtRecord,
                  void                                *context
             )
{
    QObject *obj = reinterpret_cast<QObject*>(context);
    if (errorCode != kDNSServiceErr_NoError) {
        ErrorEvent err;
        QApplication::sendEvent(obj, &err); 
        return;
    }
    char key[256];
    int index=0;
    unsigned char valueLen;
    kdDebug() << "Resolve callback\n";
    QMap<QString,QString> map;
        const void *voidValue = 0;
    while (TXTRecordGetItemAtIndex(txtLen,txtRecord,index++,256,key,&valueLen,
        &voidValue) == kDNSServiceErr_NoError)  
        {
        if (voidValue) map[QString::fromUtf8(key)]=QString::fromUtf8((const char*)voidValue,valueLen);
            else map[QString::fromUtf8(key)]=QString::null;
        }
    ResolveEvent rev(DNSToDomain(hosttarget),ntohs(port),map);
    QApplication::sendEvent(obj, &rev);
}
#endif


}

#include "remoteservice.moc"

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