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#include "Swiften/LinkLocal/AvahiDNSSDService.h"
#include <boost/bind.hpp>
#include "Swiften/EventLoop/MainEventLoop.h"
#include "Swiften/LinkLocal/LinkLocalServiceInfo.h"
#include "Swiften/Network/HostAddress.h"
namespace Swift {
AvahiDNSSDService::AvahiDNSSDService() : client(NULL), threadedPoll(0), serviceBrowser(0) {
}
AvahiDNSSDService::~AvahiDNSSDService() {
}
void AvahiDNSSDService::start() {
threadedPoll = avahi_threaded_poll_new();
int error;
client = avahi_client_new(
avahi_threaded_poll_get(threadedPoll),
static_cast<AvahiClientFlags>(0), NULL, this, &error); // TODO
if (!client) {
// TODO
std::cerr << "Avahi Error: " << avahi_strerror(error) << std::endl;
return;
}
serviceBrowser = avahi_service_browser_new(
client, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC,
"_presence._tcp", NULL, static_cast<AvahiLookupFlags>(0),
handleServiceDiscoveredGlobal, this);
if (!serviceBrowser) {
// TODO
std::cerr << "Avahi Error: " << avahi_strerror(error) << std::endl;
return;
}
avahi_threaded_poll_start(threadedPoll);
}
void AvahiDNSSDService::stop() {
avahi_threaded_poll_stop(threadedPoll);
avahi_service_browser_free(serviceBrowser);
avahi_client_free(client);
avahi_threaded_poll_free(threadedPoll);
}
void AvahiDNSSDService::registerService(const String& name, int port, const LinkLocalServiceInfo& info) {
avahi_threaded_poll_lock(threadedPoll);
avahi_threaded_poll_unlock(threadedPoll);
}
void AvahiDNSSDService::updateService(const LinkLocalServiceInfo& info) {
avahi_threaded_poll_lock(threadedPoll);
avahi_threaded_poll_unlock(threadedPoll);
}
void AvahiDNSSDService::unregisterService() {
avahi_threaded_poll_lock(threadedPoll);
avahi_threaded_poll_unlock(threadedPoll);
}
void AvahiDNSSDService::startResolvingService(const DNSSDServiceID& service) {
avahi_threaded_poll_lock(threadedPoll);
AvahiServiceResolver* resolver = avahi_service_resolver_new(
client,
service.getNetworkInterfaceID(),
AVAHI_PROTO_INET,
service.getName().getUTF8Data(),
service.getType().getUTF8Data(),
service.getDomain().getUTF8Data(),
AVAHI_PROTO_UNSPEC,
static_cast<AvahiLookupFlags>(0),
&AvahiDNSSDService::handleServiceResolvedGlobal,
this);
assert(serviceResolvers.find(service) == serviceResolvers.end());
serviceResolvers[service] = resolver;
avahi_threaded_poll_unlock(threadedPoll);
}
void AvahiDNSSDService::stopResolvingService(const DNSSDServiceID& service) {
avahi_threaded_poll_lock(threadedPoll);
ServiceResolverMap::iterator i = serviceResolvers.find(service);
assert(i != serviceResolvers.end());
avahi_service_resolver_free(i->second);
serviceResolvers.erase(i);
avahi_threaded_poll_unlock(threadedPoll);
}
// TODO: Take interfaceIndex into account
void AvahiDNSSDService::resolveHostname(const String& hostname, int) {
HostnameAddressMap::const_iterator i = hostnameAddresses.find(hostname);
if (i == hostnameAddresses.end()) {
MainEventLoop::postEvent(boost::bind(boost::ref(onHostnameResolved), hostname, boost::optional<HostAddress>()), shared_from_this());
}
else {
MainEventLoop::postEvent(boost::bind(boost::ref(onHostnameResolved), hostname, boost::optional<HostAddress>(i->second)), shared_from_this());
}
}
void AvahiDNSSDService::handleServiceDiscovered(AvahiServiceBrowser *, AvahiIfIndex interfaceIndex, AvahiProtocol, AvahiBrowserEvent event, const char *name, const char *type, const char *domain, AvahiLookupResultFlags) {
switch(event) {
case AVAHI_BROWSER_FAILURE:
std::cerr << "Browse error" << std::endl;
// TODO
return;
case AVAHI_BROWSER_NEW: {
std::cerr << "Service added: " << name << " " << type << " " << domain << std::endl;
DNSSDServiceID service(name, type, domain, interfaceIndex);
MainEventLoop::postEvent(boost::bind(boost::ref(onServiceAdded), service), shared_from_this());
}
break;
case AVAHI_BROWSER_REMOVE: {
std::cerr << "Service removed: " << name << " " << type << " " << domain << std::endl;
DNSSDServiceID service(name, type, domain, interfaceIndex);
MainEventLoop::postEvent(boost::bind(boost::ref(onServiceRemoved), service), shared_from_this());
}
break;
case AVAHI_BROWSER_ALL_FOR_NOW:
case AVAHI_BROWSER_CACHE_EXHAUSTED:
break;
}
}
void AvahiDNSSDService::handleServiceResolved(AvahiServiceResolver *, AvahiIfIndex interfaceIndex, AvahiProtocol, AvahiResolverEvent event, const char *name, const char *type, const char *domain, const char *hostname, const AvahiAddress *address, uint16_t port, AvahiStringList *txt, AvahiLookupResultFlags) {
switch(event) {
case AVAHI_RESOLVER_FAILURE:
//TODO
std::cerr << "Resolve error" << std::endl;
break;
case AVAHI_RESOLVER_FOUND:
ByteArray data;
for(AvahiStringList* i = txt; i; i = avahi_string_list_get_next(i)) {
char size = i->size;
data += ByteArray(&size, 1);
data += ByteArray(reinterpret_cast<char*>(avahi_string_list_get_text(i)), avahi_string_list_get_size(i));
}
assert(address->proto == AVAHI_PROTO_INET);
HostAddress hostAddress(reinterpret_cast<const unsigned char*>(&address->data.ipv4.address), 4);
hostnameAddresses[String(hostname)] = hostAddress;
MainEventLoop::postEvent(boost::bind(boost::ref(onServiceResolved),
DNSSDServiceID(name, type, domain, interfaceIndex),
ResolveResult(hostname, port,
LinkLocalServiceInfo::createFromTXTRecord(data))),
shared_from_this());
break;
}
}
}
|
Swift