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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 "ZeroconfBrowser.h"
#include "utils/log.h"
#include <cassert>
#include <mutex>
#include <stdexcept>
#if defined (HAS_AVAHI)
#include "platform/linux/network/zeroconf/ZeroconfBrowserAvahi.h"
#elif defined(TARGET_DARWIN)
//on osx use the native implementation
#include "platform/darwin/network/ZeroconfBrowserDarwin.h"
#elif defined(TARGET_ANDROID)
#include "platform/android/network/ZeroconfBrowserAndroid.h"
#elif defined(HAS_MDNS)
#include "mdns/ZeroconfBrowserMDNS.h"
#endif
#include "threads/CriticalSection.h"
namespace
{
std::mutex singletonMutex;
}
#if !defined(HAS_ZEROCONF)
//dummy implementation used if no zeroconf is present
//should be optimized away
class CZeroconfBrowserDummy : public CZeroconfBrowser
{
virtual bool doAddServiceType(const std::string&){return false;}
virtual bool doRemoveServiceType(const std::string&){return false;}
virtual std::vector<ZeroconfService> doGetFoundServices(){return std::vector<ZeroconfService>();}
virtual bool doResolveService(ZeroconfService&, double){return false;}
};
#endif
CZeroconfBrowser* CZeroconfBrowser::smp_instance = 0;
CZeroconfBrowser::CZeroconfBrowser():mp_crit_sec(new CCriticalSection)
{
#ifdef HAS_FILESYSTEM_SMB
AddServiceType("_smb._tcp.");
#endif
AddServiceType("_ftp._tcp.");
AddServiceType("_webdav._tcp.");
#ifdef HAS_FILESYSTEM_NFS
AddServiceType("_nfs._tcp.");
#endif// HAS_FILESYSTEM_NFS
}
CZeroconfBrowser::~CZeroconfBrowser()
{
delete mp_crit_sec;
}
void CZeroconfBrowser::Start()
{
std::unique_lock<CCriticalSection> lock(*mp_crit_sec);
if(m_started)
return;
m_started = true;
for (const auto& it : m_services)
doAddServiceType(it);
}
void CZeroconfBrowser::Stop()
{
std::unique_lock<CCriticalSection> lock(*mp_crit_sec);
if(!m_started)
return;
for (const auto& it : m_services)
RemoveServiceType(it);
m_started = false;
}
bool CZeroconfBrowser::AddServiceType(const std::string& fcr_service_type /*const std::string& domain*/ )
{
std::unique_lock<CCriticalSection> lock(*mp_crit_sec);
std::pair<tServices::iterator, bool> ret = m_services.insert(fcr_service_type);
if(!ret.second)
{
//service already in list
return false;
}
if(m_started)
return doAddServiceType(*ret.first);
//not yet started, so its just queued
return true;
}
bool CZeroconfBrowser::RemoveServiceType(const std::string& fcr_service_type)
{
std::unique_lock<CCriticalSection> lock(*mp_crit_sec);
tServices::iterator ret = m_services.find(fcr_service_type);
if(ret == m_services.end())
return false;
if(m_started)
return doRemoveServiceType(fcr_service_type);
//not yet started, so its just queued
return true;
}
std::vector<CZeroconfBrowser::ZeroconfService> CZeroconfBrowser::GetFoundServices()
{
std::unique_lock<CCriticalSection> lock(*mp_crit_sec);
if(m_started)
return doGetFoundServices();
else
{
CLog::Log(LOGDEBUG, "CZeroconfBrowser::GetFoundServices asked for services without browser running");
return std::vector<ZeroconfService>();
}
}
bool CZeroconfBrowser::ResolveService(ZeroconfService& fr_service, double f_timeout)
{
std::unique_lock<CCriticalSection> lock(*mp_crit_sec);
if(m_started)
{
return doResolveService(fr_service, f_timeout);
}
CLog::Log(LOGDEBUG, "CZeroconfBrowser::GetFoundServices asked for services without browser running");
return false;
}
CZeroconfBrowser* CZeroconfBrowser::GetInstance()
{
std::lock_guard<std::mutex> lock(singletonMutex);
if(!smp_instance)
{
#if !defined(HAS_ZEROCONF)
smp_instance = new CZeroconfBrowserDummy;
#else
#if defined(TARGET_DARWIN)
smp_instance = new CZeroconfBrowserDarwin;
#elif defined(HAS_AVAHI)
smp_instance = new CZeroconfBrowserAvahi;
#elif defined(TARGET_ANDROID)
// WIP
smp_instance = new CZeroconfBrowserAndroid;
#elif defined(HAS_MDNS)
smp_instance = new CZeroconfBrowserMDNS;
#endif
#endif
}
assert(smp_instance);
return smp_instance;
}
void CZeroconfBrowser::ReleaseInstance()
{
std::lock_guard<std::mutex> lock(singletonMutex);
delete smp_instance;
smp_instance = 0;
}
CZeroconfBrowser::ZeroconfService::ZeroconfService(const std::string& fcr_name, const std::string& fcr_type, const std::string& fcr_domain):
m_name(fcr_name),
m_domain(fcr_domain)
{
SetType(fcr_type);
}
void CZeroconfBrowser::ZeroconfService::SetName(const std::string& fcr_name)
{
m_name = fcr_name;
}
void CZeroconfBrowser::ZeroconfService::SetType(const std::string& fcr_type)
{
if(fcr_type.empty())
throw std::runtime_error("CZeroconfBrowser::ZeroconfService::SetType invalid type: "+ fcr_type);
//make sure there's a "." as last char (differs for avahi and osx implementation of browsers)
if(fcr_type[fcr_type.length() - 1] != '.')
m_type = fcr_type + ".";
else
m_type = fcr_type;
}
void CZeroconfBrowser::ZeroconfService::SetDomain(const std::string& fcr_domain)
{
m_domain = fcr_domain;
}
void CZeroconfBrowser::ZeroconfService::SetHostname(const std::string& fcr_hostname)
{
m_hostname = fcr_hostname;
}
void CZeroconfBrowser::ZeroconfService::SetIP(const std::string& fcr_ip)
{
m_ip = fcr_ip;
}
void CZeroconfBrowser::ZeroconfService::SetPort(int f_port)
{
m_port = f_port;
}
void CZeroconfBrowser::ZeroconfService::SetTxtRecords(const tTxtRecordMap& txt_records)
{
m_txtrecords_map = txt_records;
CLog::Log(LOGDEBUG,"CZeroconfBrowser: dump txt-records");
for (const auto& it : m_txtrecords_map)
{
CLog::Log(LOGDEBUG, "CZeroconfBrowser: key: {} value: {}", it.first, it.second);
}
}
std::string CZeroconfBrowser::ZeroconfService::toPath(const ZeroconfService& fcr_service)
{
return fcr_service.m_type + '@' + fcr_service.m_domain + '@' + fcr_service.m_name;
}
CZeroconfBrowser::ZeroconfService CZeroconfBrowser::ZeroconfService::fromPath(const std::string& fcr_path)
{
if( fcr_path.empty() )
throw std::runtime_error("CZeroconfBrowser::ZeroconfService::fromPath input string empty!");
size_t pos1 = fcr_path.find('@'); //first @
size_t pos2 = fcr_path.find('@', pos1 + 1); //second
if(pos1 == std::string::npos || pos2 == std::string::npos)
throw std::runtime_error("CZeroconfBrowser::ZeroconfService::fromPath invalid input path");
return ZeroconfService(
fcr_path.substr(pos2 + 1, fcr_path.length()), //name
fcr_path.substr(0, pos1), //type
fcr_path.substr(pos1 + 1, pos2-(pos1+1)) //domain
);
}
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