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// Copyright (C) 2005 Open Source Telecom Corporation.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#include <engine.h>
#ifdef ZEROCONF_AVAHI
#include <cc++/slog.h>
#include <cc++/socket.h>
#include <avahi-client/client.h>
#include <avahi-client/publish.h>
#include <avahi-common/alternative.h>
#include <avahi-common/simple-watch.h>
#include <avahi-common/malloc.h>
#include <avahi-common/error.h>
#include <avahi-common/timeval.h>
namespace moduleZeroconf {
using namespace ost;
using namespace std;
class Service : public BayonneService, public StaticKeydata
{
private:
AvahiSimplePoll *poller;
AvahiClient *client;
AvahiEntryGroup *group;
char *name;
int error;
void run(void);
void stopService(void);
public:
static Service zeroconf;
Service();
inline void setClient(AvahiClient *c)
{client = c;};
void setClient(AvahiClientState state);
void setGroup(AvahiEntryGroupState state);
};
extern "C" {
static void client_callback(AvahiClient *c, AvahiClientState state, void *userdata)
{
if(!c)
return;
Service::zeroconf.setClient(c);
Service::zeroconf.setClient(state);
}
static void group_callback(AvahiEntryGroup *g, AvahiEntryGroupState state, void *userdata)
{
Service::zeroconf.setGroup(state);
}
};
Service Service::zeroconf;
static Keydata::Define defkeys[] = {
{"name", "bayonne"},
{NULL, NULL}};
Service::Service() :
BayonneService(0, 0),
StaticKeydata("/bayonne/module/zeroconf", defkeys)
{
name = avahi_strdup(getString("name"));
group = NULL;
client = NULL;
}
void Service::setGroup(AvahiEntryGroupState state)
{
char *newname;
switch(state)
{
case AVAHI_ENTRY_GROUP_ESTABLISHED:
slog.info("zeroconf: %s service(s) established", name);
break;
case AVAHI_ENTRY_GROUP_COLLISION:
newname = avahi_alternative_service_name(name);
slog.notice("zeroconf: service %s renamed %s", name, newname);
avahi_free(name);
name = newname;
setClient(AVAHI_CLIENT_S_RUNNING);
case AVAHI_ENTRY_GROUP_FAILURE:
slog.error("zeroconf: service failure; error=%s",
avahi_strerror(avahi_client_errno(client)));
avahi_simple_poll_quit(poller);
default:
break;
}
}
void Service::setClient(AvahiClientState state)
{
BayonneZeroconf *node;
int ret;
unsigned count = 0;
AvahiProtocol family = AVAHI_PROTO_UNSPEC;
switch(state)
{
case AVAHI_CLIENT_S_RUNNING:
goto add;
case AVAHI_CLIENT_FAILURE:
failed:
slog.error("zeroconf failure; error=%s",
avahi_strerror(avahi_client_errno(client)));
avahi_simple_poll_quit(poller);
break;
case AVAHI_CLIENT_S_COLLISION:
case AVAHI_CLIENT_S_REGISTERING:
if(group)
avahi_entry_group_reset(group);
default:
break;
}
return;
add:
if(!group)
group = avahi_entry_group_new(client, group_callback, NULL);
if(!group)
goto failed;
node = BayonneZeroconf::getFirst();
while(node)
{
switch(node->getFamily())
{
case BayonneZeroconf::ZEROCONF_IPANY:
family = AVAHI_PROTO_UNSPEC;
break;
case BayonneZeroconf::ZEROCONF_IPV4:
family = AVAHI_PROTO_INET;
break;
case BayonneZeroconf::ZEROCONF_IPV6:
family = AVAHI_PROTO_INET6;
break;
}
if(node->getPort())
{
SLOG_DEBUG("zeroconf: adding service=%s, type=%s, port=%d",
name, node->getType(), node->getPort());
ret = avahi_entry_group_add_service(group,
AVAHI_IF_UNSPEC, family,
(AvahiPublishFlags)0, name,
node->getType(), NULL, NULL,
node->getPort(), NULL);
}
else
ret = 0;
if(ret < 0)
slog.error("zeroconf: %s failed; error=%s",
node->getType(), avahi_strerror(ret));
else if(node->getPort())
++count;
node = node->getNext();
}
if(!count)
{
slog.error("zeroconf: no services registered");
avahi_simple_poll_quit(poller);
return;
}
ret = avahi_entry_group_commit(group);
if(ret >= 0)
return;
slog.error("zeroconf service commit failure; error=%s",
avahi_strerror(ret));
}
void Service::stopService(void)
{
terminate();
if(client)
avahi_client_free(client);
if(poller)
avahi_simple_poll_free(poller);
if(name)
avahi_free(name);
client = NULL;
poller = NULL;
name = NULL;
}
void Service::run(void)
{
poller = avahi_simple_poll_new();
if(!poller)
{
slog.debug("zeroconf service failed to start");
Thread::sync();
}
client = avahi_client_new(avahi_simple_poll_get(poller),
(AvahiClientFlags)0,
client_callback, NULL, &error);
slog.debug("zeroconf service started");
Thread::setCancel(cancelImmediate);
avahi_simple_poll_loop(poller);
Thread::sync();
}
} // namespace
#endif
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