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/*
* Copyright (c) 2010-2018 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#include <Swiften/Network/StaticDomainNameResolver.h>
#include <string>
#include <boost/bind.hpp>
#include <boost/lexical_cast.hpp>
#include <Swiften/EventLoop/EventOwner.h>
#include <Swiften/Network/DomainNameResolveError.h>
using namespace Swift;
namespace {
struct ServiceQuery : public DomainNameServiceQuery, public std::enable_shared_from_this<ServiceQuery> {
ServiceQuery(const std::string& service, Swift::StaticDomainNameResolver* resolver, EventLoop* eventLoop, std::shared_ptr<EventOwner> owner) : eventLoop(eventLoop), service(service), resolver(resolver), owner(owner) {}
virtual void run() {
if (!resolver->getIsResponsive()) {
return;
}
std::vector<DomainNameServiceQuery::Result> results;
for(const auto& i : resolver->getServices()) {
if (i.first == service) {
results.push_back(i.second);
}
}
eventLoop->postEvent(boost::bind(&ServiceQuery::emitOnResult, shared_from_this(), results), owner);
}
void emitOnResult(std::vector<DomainNameServiceQuery::Result> results) {
onResult(results);
}
EventLoop* eventLoop;
std::string service;
StaticDomainNameResolver* resolver;
std::shared_ptr<EventOwner> owner;
};
struct AddressQuery : public DomainNameAddressQuery, public std::enable_shared_from_this<AddressQuery> {
AddressQuery(const std::string& host, StaticDomainNameResolver* resolver, EventLoop* eventLoop, std::shared_ptr<EventOwner> owner) : eventLoop(eventLoop), host(host), resolver(resolver), owner(owner) {}
virtual void run() {
if (!resolver->getIsResponsive()) {
return;
}
if (auto address = HostAddress::fromString(host)) {
// IP Literals should resolve to themselves
resolver->addAddress(host, *address);
}
StaticDomainNameResolver::AddressesMap::const_iterator i = resolver->getAddresses().find(host);
if (i != resolver->getAddresses().end()) {
eventLoop->postEvent(
boost::bind(&AddressQuery::emitOnResult, shared_from_this(), i->second, boost::optional<DomainNameResolveError>()));
}
else {
eventLoop->postEvent(boost::bind(&AddressQuery::emitOnResult, shared_from_this(), std::vector<HostAddress>(), boost::optional<DomainNameResolveError>(DomainNameResolveError())), owner);
}
}
void emitOnResult(std::vector<HostAddress> results, boost::optional<DomainNameResolveError> error) {
onResult(results, error);
}
EventLoop* eventLoop;
std::string host;
StaticDomainNameResolver* resolver;
std::shared_ptr<EventOwner> owner;
};
}
class StaticDomainNameResolverEventOwner : public EventOwner {
public:
~StaticDomainNameResolverEventOwner() {
}
};
namespace Swift {
StaticDomainNameResolver::StaticDomainNameResolver(EventLoop* eventLoop) : eventLoop(eventLoop), isResponsive(true), owner(new StaticDomainNameResolverEventOwner()) {
}
StaticDomainNameResolver::~StaticDomainNameResolver() {
eventLoop->removeEventsFromOwner(owner);
}
void StaticDomainNameResolver::addAddress(const std::string& domain, const HostAddress& address) {
addresses[domain].push_back(address);
}
void StaticDomainNameResolver::addService(const std::string& service, const DomainNameServiceQuery::Result& result) {
services.push_back(std::make_pair(service, result));
}
void StaticDomainNameResolver::addXMPPClientService(const std::string& domain, const HostAddressPort& address) {
static int hostid = 0;
std::string hostname(std::string("host-") + std::to_string(hostid));
hostid++;
addService("_xmpp-client._tcp." + domain, ServiceQuery::Result(hostname, address.getPort(), 0, 0));
addAddress(hostname, address.getAddress());
}
void StaticDomainNameResolver::addXMPPClientService(const std::string& domain, const std::string& hostname, unsigned short port) {
addService("_xmpp-client._tcp." + domain, ServiceQuery::Result(hostname, port, 0, 0));
}
std::shared_ptr<DomainNameServiceQuery> StaticDomainNameResolver::createServiceQuery(const std::string& serviceLookupPrefix, const std::string& domain) {
return std::make_shared<ServiceQuery>(serviceLookupPrefix + domain, this, eventLoop, owner);
}
std::shared_ptr<DomainNameAddressQuery> StaticDomainNameResolver::createAddressQuery(const std::string& name) {
return std::make_shared<AddressQuery>(name, this, eventLoop, owner);
}
}
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Swift