remoteservice.cpp
/* 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"
DNSSD::RemoteService::resolveAsync
void resolveAsync()
Resolves host name and port of service.
Definition: remoteservice.cpp:97
DNSSD::RemoteService::RemoteService
RemoteService(const QString &label)
Creates unresolved service from given DNS label.
Definition: remoteservice.cpp:59
DNSSD::ServiceBase
This class is used to carry information about service.
Definition: servicebase.h:40
DNSSD::ServiceBase::m_textData
QMap< QString, QString > m_textData
Map of TXT properties.
Definition: servicebase.h:99
DNSSD::RemoteService::isResolved
bool isResolved() const
Returns true if service has been successfully resolved.
Definition: remoteservice.cpp:111
DNSSD::RemoteService::resolve
bool resolve()
Synchronous version of resolveAsync().
Definition: remoteservice.cpp:89
DNSSD::RemoteService::resolved
void resolved(bool)
Emitted when resolving is complete.
DNSSD::ServiceBase::decode
void decode(const QString &name)
Decode PTR label returned by DNS resolver into service name, type and domain.
Definition: servicebase.cpp:45

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