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/*
* Copyright (C) 2005-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#include "ZeroconfMDNS.h"
#include "dialogs/GUIDialogKaiToast.h"
#include "guilib/LocalizeStrings.h"
#include "utils/log.h"
#include <mutex>
#include <sstream>
#include <string>
#include <arpa/inet.h>
#if defined(TARGET_WINDOWS)
#include "platform/win32/WIN32Util.h"
#endif //TARGET_WINDOWS
#if defined(HAS_MDNS_EMBEDDED)
#include <mDnsEmbedded.h>
#endif //HAS_MDNS_EMBEDDED
extern HWND g_hWnd;
void CZeroconfMDNS::Process()
{
#if defined(HAS_MDNS_EMBEDDED)
CLog::Log(LOGDEBUG, "ZeroconfEmbedded - processing...");
struct timeval timeout;
timeout.tv_sec = 1;
while (( !m_bStop ))
embedded_mDNSmainLoop(timeout);
#endif //HAS_MDNS_EMBEDDED
}
CZeroconfMDNS::CZeroconfMDNS() : CThread("ZeroconfEmbedded")
{
m_service = NULL;
#if defined(HAS_MDNS_EMBEDDED)
embedded_mDNSInit();
Create();
#endif //HAS_MDNS_EMBEDDED
}
CZeroconfMDNS::~CZeroconfMDNS()
{
doStop();
#if defined(HAS_MDNS_EMBEDDED)
StopThread();
embedded_mDNSExit();
#endif //HAS_MDNS_EMBEDDED
}
bool CZeroconfMDNS::IsZCdaemonRunning()
{
#if !defined(HAS_MDNS_EMBEDDED)
uint32_t version;
uint32_t size = sizeof(version);
DNSServiceErrorType err = DNSServiceGetProperty(kDNSServiceProperty_DaemonVersion, &version, &size);
if(err != kDNSServiceErr_NoError)
{
CLog::Log(LOGERROR, "ZeroconfMDNS: Zeroconf can't be started probably because Apple's Bonjour Service isn't installed. You can get it by either installing Itunes or Apple's Bonjour Print Service for Windows (http://support.apple.com/kb/DL999)");
CGUIDialogKaiToast::QueueNotification(CGUIDialogKaiToast::Error, g_localizeStrings.Get(34300), g_localizeStrings.Get(34301), 10000, true);
return false;
}
CLog::Log(LOGDEBUG, "ZeroconfMDNS:Bonjour version is {}.{}", version / 10000,
version / 100 % 100);
#endif //!HAS_MDNS_EMBEDDED
return true;
}
//methods to implement for concrete implementations
bool CZeroconfMDNS::doPublishService(const std::string& fcr_identifier,
const std::string& fcr_type,
const std::string& fcr_name,
unsigned int f_port,
const std::vector<std::pair<std::string, std::string> >& txt)
{
DNSServiceRef netService = NULL;
TXTRecordRef txtRecord;
DNSServiceErrorType err;
TXTRecordCreate(&txtRecord, 0, NULL);
#if !defined(HAS_MDNS_EMBEDDED)
std::unique_lock<CCriticalSection> lock(m_data_guard);
if(m_service == NULL)
{
err = DNSServiceCreateConnection(&m_service);
if (err != kDNSServiceErr_NoError)
{
CLog::Log(LOGERROR, "ZeroconfMDNS: DNSServiceCreateConnection failed with error = {}",
(int)err);
return false;
}
#ifdef TARGET_WINDOWS_STORE
CLog::Log(LOGERROR, "ZeroconfMDNS: WSAAsyncSelect not yet supported for TARGET_WINDOWS_STORE");
#else
err = WSAAsyncSelect( (SOCKET) DNSServiceRefSockFD( m_service ), g_hWnd, BONJOUR_EVENT, FD_READ | FD_CLOSE );
if (err != kDNSServiceErr_NoError)
CLog::Log(LOGERROR, "ZeroconfMDNS: WSAAsyncSelect failed with error = {}", (int)err);
#endif
}
#endif //!HAS_MDNS_EMBEDDED
CLog::Log(LOGDEBUG, "ZeroconfMDNS: identifier: {} type: {} name:{} port:{}", fcr_identifier,
fcr_type, fcr_name, f_port);
//add txt records
if(!txt.empty())
{
for (const auto& it : txt)
{
CLog::Log(LOGDEBUG, "ZeroconfMDNS: key:{}, value:{}", it.first, it.second);
uint8_t txtLen = (uint8_t)strlen(it.second.c_str());
TXTRecordSetValue(&txtRecord, it.first.c_str(), txtLen, it.second.c_str());
}
}
{
std::unique_lock<CCriticalSection> lock(m_data_guard);
netService = m_service;
err = DNSServiceRegister(&netService, kDNSServiceFlagsShareConnection, 0, fcr_name.c_str(), fcr_type.c_str(), NULL, NULL, htons(f_port), TXTRecordGetLength(&txtRecord), TXTRecordGetBytesPtr(&txtRecord), registerCallback, NULL);
}
if (err != kDNSServiceErr_NoError)
{
// Something went wrong so lets clean up.
if (netService)
DNSServiceRefDeallocate(netService);
CLog::Log(LOGERROR, "ZeroconfMDNS: DNSServiceRegister returned (error = {})", (int)err);
}
else
{
std::unique_lock<CCriticalSection> lock(m_data_guard);
struct tServiceRef newService;
newService.serviceRef = netService;
newService.txtRecordRef = txtRecord;
newService.updateNumber = 0;
m_services.insert(make_pair(fcr_identifier, newService));
}
return err == kDNSServiceErr_NoError;
}
bool CZeroconfMDNS::doForceReAnnounceService(const std::string& fcr_identifier)
{
bool ret = false;
std::unique_lock<CCriticalSection> lock(m_data_guard);
tServiceMap::iterator it = m_services.find(fcr_identifier);
if(it != m_services.end())
{
// for force announcing a service with mdns we need
// to change a txt record - so we diddle between
// even and odd dummy records here
if ( (it->second.updateNumber % 2) == 0)
TXTRecordSetValue(&it->second.txtRecordRef, "xbmcdummy", strlen("evendummy"), "evendummy");
else
TXTRecordSetValue(&it->second.txtRecordRef, "xbmcdummy", strlen("odddummy"), "odddummy");
it->second.updateNumber++;
if (DNSServiceUpdateRecord(it->second.serviceRef, NULL, 0, TXTRecordGetLength(&it->second.txtRecordRef), TXTRecordGetBytesPtr(&it->second.txtRecordRef), 0) == kDNSServiceErr_NoError)
ret = true;
}
return ret;
}
bool CZeroconfMDNS::doRemoveService(const std::string& fcr_ident)
{
std::unique_lock<CCriticalSection> lock(m_data_guard);
tServiceMap::iterator it = m_services.find(fcr_ident);
if(it != m_services.end())
{
DNSServiceRefDeallocate(it->second.serviceRef);
TXTRecordDeallocate(&it->second.txtRecordRef);
m_services.erase(it);
CLog::Log(LOGDEBUG, "ZeroconfMDNS: Removed service {}", fcr_ident);
return true;
}
else
return false;
}
void CZeroconfMDNS::doStop()
{
{
std::unique_lock<CCriticalSection> lock(m_data_guard);
CLog::Log(LOGDEBUG, "ZeroconfMDNS: Shutdown services");
for (auto& it : m_services)
{
DNSServiceRefDeallocate(it.second.serviceRef);
TXTRecordDeallocate(&it.second.txtRecordRef);
CLog::Log(LOGDEBUG, "ZeroconfMDNS: Removed service {}", it.first);
}
m_services.clear();
}
{
std::unique_lock<CCriticalSection> lock(m_data_guard);
#if defined(TARGET_WINDOWS_STORE)
CLog::Log(LOGERROR, "ZeroconfMDNS: WSAAsyncSelect not yet supported for TARGET_WINDOWS_STORE");
#else
WSAAsyncSelect( (SOCKET) DNSServiceRefSockFD( m_service ), g_hWnd, BONJOUR_EVENT, 0 );
#endif //TARGET_WINDOWS
if (m_service)
DNSServiceRefDeallocate(m_service);
m_service = NULL;
}
}
void DNSSD_API CZeroconfMDNS::registerCallback(DNSServiceRef sdref, const DNSServiceFlags flags, DNSServiceErrorType errorCode, const char *name, const char *regtype, const char *domain, void *context)
{
(void)sdref; // Unused
(void)flags; // Unused
(void)context; // Unused
if (errorCode == kDNSServiceErr_NoError)
{
if (flags & kDNSServiceFlagsAdd)
CLog::Log(LOGDEBUG, "ZeroconfMDNS: {}.{}{} now registered and active", name, regtype, domain);
else
CLog::Log(LOGDEBUG, "ZeroconfMDNS: {}.{}{} registration removed", name, regtype, domain);
}
else if (errorCode == kDNSServiceErr_NameConflict)
CLog::Log(LOGDEBUG, "ZeroconfMDNS: {}.{}{} Name in use, please choose another", name, regtype,
domain);
else
CLog::Log(LOGDEBUG, "ZeroconfMDNS: {}.{}{} error code {}", name, regtype, domain, errorCode);
}
void CZeroconfMDNS::ProcessResults()
{
std::unique_lock<CCriticalSection> lock(m_data_guard);
DNSServiceErrorType err = DNSServiceProcessResult(m_service);
if (err != kDNSServiceErr_NoError)
CLog::Log(LOGERROR, "ZeroconfMDNS: DNSServiceProcessResult returned (error = {})", (int)err);
}
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