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322 lines
8.0 KiB
322 lines
8.0 KiB
/* This file is part of the KDE project
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*
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* Copyright (C) 2004, 2005 Jakub Stachowski <qbast@go2.pl>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#include "publicservice.h"
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <tqapplication.h>
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#include <network/tdesocketaddress.h>
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#include <kurl.h>
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#include <unistd.h>
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#ifdef HAVE_DNSSD
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#include <avahi-client/client.h>
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#ifdef AVAHI_API_0_6
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#include <avahi-client/publish.h>
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#endif
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#include <avahi-common/alternative.h>
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#include <avahi-common/strlst.h>
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#endif
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#include "sdevent.h"
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#include "responder.h"
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#include "servicebrowser.h"
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#include "settings.h"
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namespace DNSSD
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{
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static unsigned long publicIP();
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#ifdef HAVE_DNSSD
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void publish_callback (AvahiEntryGroup*, AvahiEntryGroupState s, void *context);
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#endif
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class PublicServicePrivate
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{
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public:
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PublicServicePrivate() : m_published(false), m_running(false), m_collision(false)
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#ifdef HAVE_DNSSD
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, m_group(0)
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#endif
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{}
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bool m_published;
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bool m_running;
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bool m_collision;
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#ifdef HAVE_DNSSD
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AvahiEntryGroup* m_group;
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#endif
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void commit()
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{
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#ifdef HAVE_DNSSD
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if (!m_collision) avahi_entry_group_commit(m_group);
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#endif
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}
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};
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PublicService::PublicService(const TQString& name, const TQString& type, unsigned int port,
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const TQString& domain)
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: TQObject(), ServiceBase(name, type, TQString::null, domain, port)
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{
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d = new PublicServicePrivate;
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#ifdef HAVE_DNSSD
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if (Responder::self().client()) {
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d->m_group = avahi_entry_group_new(Responder::self().client(), publish_callback,this);
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connect(&Responder::self(),TQT_SIGNAL(stateChanged(AvahiClientState)),this,TQT_SLOT(clientState(AvahiClientState)));
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}
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#endif
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if (domain.isNull())
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if (Configuration::publishType()==Configuration::EnumPublishType::LAN) m_domain="local.";
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else m_domain=Configuration::publishDomain();
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}
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PublicService::~PublicService()
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{
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#ifdef HAVE_DNSSD
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if (d->m_group) avahi_entry_group_free(d->m_group);
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#endif
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delete d;
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}
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void PublicService::tryApply()
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{
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if (fillEntryGroup()) d->commit();
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else {
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stop();
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emit published(false);
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}
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}
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void PublicService::setServiceName(const TQString& serviceName)
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{
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m_serviceName = serviceName;
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#ifdef HAVE_DNSSD
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if (d->m_running) {
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avahi_entry_group_reset(d->m_group);
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tryApply();
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}
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#endif
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}
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void PublicService::setDomain(const TQString& domain)
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{
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m_domain = domain;
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#ifdef HAVE_DNSSD
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if (d->m_running) {
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avahi_entry_group_reset(d->m_group);
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tryApply();
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}
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#endif
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}
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void PublicService::setType(const TQString& type)
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{
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m_type = type;
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#ifdef HAVE_DNSSD
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if (d->m_running) {
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avahi_entry_group_reset(d->m_group);
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tryApply();
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}
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#endif
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}
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void PublicService::setPort(unsigned short port)
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{
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m_port = port;
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#ifdef HAVE_DNSSD
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if (d->m_running) {
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avahi_entry_group_reset(d->m_group);
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tryApply();
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}
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#endif
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}
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void PublicService::setTextData(const TQMap<TQString,TQString>& textData)
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{
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m_textData = textData;
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#ifdef HAVE_DNSSD
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if (d->m_running) {
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avahi_entry_group_reset(d->m_group);
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tryApply();
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}
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#endif
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}
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bool PublicService::isPublished() const
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{
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return d->m_published;
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}
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bool PublicService::publish()
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{
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publishAsync();
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while (d->m_running && !d->m_published) Responder::self().process();
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return d->m_published;
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}
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void PublicService::stop()
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{
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#ifdef HAVE_DNSSD
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if (d->m_group) avahi_entry_group_reset(d->m_group);
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#endif
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d->m_published = false;
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}
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bool PublicService::fillEntryGroup()
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{
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#ifdef HAVE_DNSSD
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AvahiStringList *s=0;
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TQMap<TQString,TQString>::ConstIterator itEnd = m_textData.end();
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for (TQMap<TQString,TQString>::ConstIterator it = m_textData.begin(); it!=itEnd ; ++it)
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s = avahi_string_list_add_pair(s, it.key().utf8(),it.data().utf8());
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#ifdef AVAHI_API_0_6
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bool res = (!avahi_entry_group_add_service_strlst(d->m_group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, (AvahiPublishFlags)0,
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m_serviceName.isNull() ? avahi_client_get_host_name(Responder::self().client()) : m_serviceName.utf8().data(),
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m_type.ascii(),domainToDNS(m_domain),m_hostName.utf8(),m_port,s));
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#else
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bool res = (!avahi_entry_group_add_service_strlst(d->m_group, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC,
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m_serviceName.isNull() ? avahi_client_get_host_name(Responder::self().client()) : m_serviceName.utf8().data(),
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m_type.ascii(),m_domain.utf8(),m_hostName.utf8(),m_port,s));
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#endif
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avahi_string_list_free(s);
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return res;
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#else
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return FALSE;
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#endif
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}
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void PublicService::clientState(AvahiClientState s)
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{
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if (!d->m_running) return;
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#ifdef HAVE_DNSSD
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switch (s) {
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#ifdef AVAHI_API_0_6
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case AVAHI_CLIENT_FAILURE:
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#else
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case AVAHI_CLIENT_S_INVALID:
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case AVAHI_CLIENT_DISCONNECTED:
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#endif
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stop();
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emit published(false);
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break;
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case AVAHI_CLIENT_S_REGISTERING:
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case AVAHI_CLIENT_S_COLLISION:
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avahi_entry_group_reset(d->m_group);
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d->m_collision=true;
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break;
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case AVAHI_CLIENT_S_RUNNING:
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if (d->m_collision) {
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d->m_collision=false;
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tryApply();
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}
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}
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#endif
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}
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void PublicService::publishAsync()
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{
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if (d->m_running) stop();
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#ifdef HAVE_DNSSD
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if (!d->m_group) {
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emit published(false);
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return;
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}
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AvahiClientState s=Responder::self().state();
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#endif
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d->m_running=true;
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d->m_collision=true; // make it look like server is getting out of collision to force registering
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#ifdef HAVE_DNSSD
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clientState(s);
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#endif
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}
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#ifdef HAVE_DNSSD
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void publish_callback (AvahiEntryGroup*, AvahiEntryGroupState s, void *context)
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{
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TQObject *obj = reinterpret_cast<TQObject*>(context);
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if (s!=AVAHI_ENTRY_GROUP_ESTABLISHED && s!=AVAHI_ENTRY_GROUP_COLLISION) return;
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PublishEvent* pev=new PublishEvent(s==AVAHI_ENTRY_GROUP_ESTABLISHED);
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TQApplication::postEvent(obj, pev);
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}
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#endif
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const KURL PublicService::toInvitation(const TQString& host)
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{
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KURL url;
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url.setProtocol("invitation");
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if (host.isEmpty()) { // select best address
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unsigned long s_address = publicIP();
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if (!s_address) return KURL();
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KNetwork::KIpAddress addr(s_address);
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url.setHost(addr.toString());
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} else url.setHost(host);
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//FIXME: if there is no public interface, select any non-loopback
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url.setPort(m_port);
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url.setPath("/"+m_type+"/"+KURL::encode_string(m_serviceName));
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TQString query;
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TQMap<TQString,TQString>::ConstIterator itEnd = m_textData.end();
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for (TQMap<TQString,TQString>::ConstIterator it = m_textData.begin(); it!=itEnd ; ++it)
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url.addQueryItem(it.key(),it.data());;
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return url;
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}
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void PublicService::customEvent(TQCustomEvent* event)
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{
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#ifdef HAVE_DNSSD
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if (event->type()==TQEvent::User+SD_PUBLISH) {
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if (!static_cast<PublishEvent*>(event)->m_ok) {
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setServiceName(TQString::fromUtf8(avahi_alternative_service_name(m_serviceName.utf8())));
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return;
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}
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d->m_published=true;
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emit published(true);
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}
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#endif
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}
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void PublicService::virtual_hook(int, void*)
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{
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}
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static unsigned long publicIP()
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{
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struct sockaddr_in addr;
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socklen_t len = sizeof(addr);
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int sock = socket(AF_INET,SOCK_DGRAM,0);
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if (sock == -1) return 0;
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addr.sin_family = AF_INET;
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addr.sin_port = 1; // Not important, any port and public address will do
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addr.sin_addr.s_addr = 0x11111111;
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if ((connect(sock,(const struct sockaddr*)&addr,sizeof(addr))) == -1) { close(sock); return 0; }
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if ((getsockname(sock,(struct sockaddr*)&addr, &len)) == -1) { close(sock); return 0; }
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::close(sock);
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return addr.sin_addr.s_addr;
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}
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}
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#include "publicservice.moc"
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