111 lines
2.8 KiB
C++
111 lines
2.8 KiB
C++
/*
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* Copyright 2003-2021 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "Bonjour.hxx"
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#include "Internal.hxx"
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#include "event/SocketEvent.hxx"
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#include "util/Domain.hxx"
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#include "Log.hxx"
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#include "util/Compiler.h"
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#include <dns_sd.h>
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#include <arpa/inet.h>
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static constexpr Domain bonjour_domain("bonjour");
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class BonjourHelper final {
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DNSServiceRef service_ref;
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SocketEvent socket_event;
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public:
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BonjourHelper(EventLoop &_loop, DNSServiceRef _service_ref)
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:service_ref(_service_ref),
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socket_event(_loop,
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BIND_THIS_METHOD(OnSocketReady),
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SocketDescriptor(DNSServiceRefSockFD(service_ref)))
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{
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socket_event.ScheduleRead();
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}
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~BonjourHelper() {
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DNSServiceRefDeallocate(service_ref);
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}
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void Cancel() noexcept {
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socket_event.Cancel();
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}
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protected:
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/* virtual methods from class SocketMonitor */
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void OnSocketReady([[maybe_unused]] unsigned flags) noexcept {
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DNSServiceProcessResult(service_ref);
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}
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};
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static BonjourHelper *bonjour_monitor;
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static void
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dnsRegisterCallback([[maybe_unused]] DNSServiceRef sdRef,
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[[maybe_unused]] DNSServiceFlags flags,
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DNSServiceErrorType errorCode, const char *name,
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[[maybe_unused]] const char *regtype,
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[[maybe_unused]] const char *domain,
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[[maybe_unused]] void *context)
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{
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if (errorCode != kDNSServiceErr_NoError) {
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LogError(bonjour_domain,
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"Failed to register zeroconf service");
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bonjour_monitor->Cancel();
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} else {
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FormatDebug(bonjour_domain,
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"Registered zeroconf service with name '%s'",
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name);
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}
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}
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void
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BonjourInit(EventLoop &loop, const char *service_name, unsigned port)
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{
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DNSServiceRef dnsReference;
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DNSServiceErrorType error = DNSServiceRegister(&dnsReference,
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0, 0, service_name,
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SERVICE_TYPE, nullptr, nullptr,
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htons(port), 0,
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nullptr,
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dnsRegisterCallback,
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nullptr);
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if (error != kDNSServiceErr_NoError) {
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LogError(bonjour_domain,
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"Failed to register zeroconf service");
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return;
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}
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bonjour_monitor = new BonjourHelper(loop, dnsReference);
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}
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void
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BonjourDeinit()
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{
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delete bonjour_monitor;
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}
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