mirror of https://github.com/PurpleI2P/i2pd.git
I2P: End-to-End encrypted and anonymous Internet
https://i2pd.website/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
280 lines
7.4 KiB
280 lines
7.4 KiB
/* |
|
* Copyright (c) 2013-2024, The PurpleI2P Project |
|
* |
|
* This file is part of Purple i2pd project and licensed under BSD3 |
|
* |
|
* See full license text in LICENSE file at top of project tree |
|
*/ |
|
|
|
#ifdef USE_UPNP |
|
#include <string> |
|
#include <thread> |
|
|
|
#include "Log.h" |
|
|
|
#include "RouterContext.h" |
|
#include "UPnP.h" |
|
#include "NetDb.hpp" |
|
#include "util.h" |
|
#include "RouterInfo.h" |
|
#include "Config.h" |
|
|
|
#include <miniupnpc/miniupnpc.h> |
|
#include <miniupnpc/upnpcommands.h> |
|
|
|
namespace i2p |
|
{ |
|
namespace transport |
|
{ |
|
UPnP::UPnP () : m_IsRunning(false), m_Thread (nullptr), m_Timer (m_Service) |
|
{ |
|
} |
|
|
|
void UPnP::Stop () |
|
{ |
|
if (m_IsRunning) |
|
{ |
|
LogPrint(eLogInfo, "UPnP: Stopping"); |
|
m_IsRunning = false; |
|
m_Timer.cancel (); |
|
m_Service.stop (); |
|
if (m_Thread) |
|
{ |
|
m_Thread->join (); |
|
m_Thread.reset (nullptr); |
|
} |
|
CloseMapping (); |
|
Close (); |
|
} |
|
} |
|
|
|
void UPnP::Start() |
|
{ |
|
m_IsRunning = true; |
|
LogPrint(eLogInfo, "UPnP: Starting"); |
|
m_Service.post (std::bind (&UPnP::Discover, this)); |
|
std::unique_lock<std::mutex> l(m_StartedMutex); |
|
m_Thread.reset (new std::thread (std::bind (&UPnP::Run, this))); |
|
m_Started.wait_for (l, std::chrono::seconds (5)); // 5 seconds maximum |
|
} |
|
|
|
UPnP::~UPnP () |
|
{ |
|
Stop (); |
|
} |
|
|
|
void UPnP::Run () |
|
{ |
|
i2p::util::SetThreadName("UPnP"); |
|
|
|
while (m_IsRunning) |
|
{ |
|
try |
|
{ |
|
m_Service.run (); |
|
// Discover failed |
|
break; // terminate the thread |
|
} |
|
catch (std::exception& ex) |
|
{ |
|
LogPrint (eLogError, "UPnP: Runtime exception: ", ex.what ()); |
|
PortMapping (); |
|
} |
|
} |
|
} |
|
|
|
void UPnP::Discover () |
|
{ |
|
bool isError; |
|
int err; |
|
|
|
#if ((MINIUPNPC_API_VERSION >= 8) || defined (UPNPDISCOVER_SUCCESS)) |
|
err = UPNPDISCOVER_SUCCESS; |
|
|
|
#if (MINIUPNPC_API_VERSION >= 14) |
|
m_Devlist = upnpDiscover (UPNP_RESPONSE_TIMEOUT, NULL, NULL, 0, 0, 2, &err); |
|
#else |
|
m_Devlist = upnpDiscover (UPNP_RESPONSE_TIMEOUT, NULL, NULL, 0, 0, &err); |
|
#endif |
|
|
|
isError = err != UPNPDISCOVER_SUCCESS; |
|
#else // MINIUPNPC_API_VERSION >= 8 |
|
err = 0; |
|
m_Devlist = upnpDiscover (UPNP_RESPONSE_TIMEOUT, NULL, NULL, 0); |
|
isError = m_Devlist == NULL; |
|
#endif // MINIUPNPC_API_VERSION >= 8 |
|
{ |
|
// notify starting thread |
|
std::unique_lock<std::mutex> l(m_StartedMutex); |
|
m_Started.notify_all (); |
|
} |
|
|
|
if (isError) |
|
{ |
|
LogPrint (eLogError, "UPnP: Unable to discover Internet Gateway Devices: error ", err); |
|
return; |
|
} |
|
|
|
#if (MINIUPNPC_API_VERSION >= 18) |
|
err = UPNP_GetValidIGD (m_Devlist, &m_upnpUrls, &m_upnpData, m_NetworkAddr, sizeof (m_NetworkAddr), |
|
m_externalIPAddress, sizeof (m_externalIPAddress)); |
|
#else |
|
err = UPNP_GetValidIGD (m_Devlist, &m_upnpUrls, &m_upnpData, m_NetworkAddr, sizeof (m_NetworkAddr)); |
|
#endif |
|
m_upnpUrlsInitialized=err!=0; |
|
if (err == UPNP_IGD_VALID_CONNECTED) |
|
{ |
|
#if (MINIUPNPC_API_VERSION < 18) |
|
err = UPNP_GetExternalIPAddress (m_upnpUrls.controlURL, m_upnpData.first.servicetype, m_externalIPAddress); |
|
if(err != UPNPCOMMAND_SUCCESS) |
|
{ |
|
LogPrint (eLogError, "UPnP: Unable to get external address: error ", err); |
|
return; |
|
} |
|
else |
|
#endif |
|
{ |
|
LogPrint (eLogError, "UPnP: Found Internet Gateway Device ", m_upnpUrls.controlURL); |
|
if (!m_externalIPAddress[0]) |
|
{ |
|
LogPrint (eLogError, "UPnP: Found Internet Gateway Device doesn't know our external address"); |
|
return; |
|
} |
|
} |
|
} |
|
else |
|
{ |
|
LogPrint (eLogError, "UPnP: Unable to find valid Internet Gateway Device: error ", err); |
|
return; |
|
} |
|
|
|
// UPnP discovered |
|
LogPrint (eLogDebug, "UPnP: ExternalIPAddress is ", m_externalIPAddress); |
|
i2p::context.UpdateAddress (boost::asio::ip::address::from_string (m_externalIPAddress)); |
|
// port mapping |
|
PortMapping (); |
|
} |
|
|
|
int UPnP::CheckMapping (const char* port, const char* type) |
|
{ |
|
int err = UPNPCOMMAND_SUCCESS; |
|
|
|
#if (MINIUPNPC_API_VERSION >= 10) |
|
err = UPNP_GetSpecificPortMappingEntry(m_upnpUrls.controlURL, m_upnpData.first.servicetype, port, type, NULL, NULL, NULL, NULL, NULL, NULL); |
|
#elif ((MINIUPNPC_API_VERSION >= 8) || defined (UPNPDISCOVER_SUCCESS)) |
|
err = UPNP_GetSpecificPortMappingEntry(m_upnpUrls.controlURL, m_upnpData.first.servicetype, port, type, NULL, NULL, NULL, NULL, NULL); |
|
#else |
|
err = UPNP_GetSpecificPortMappingEntry(m_upnpUrls.controlURL, m_upnpData.first.servicetype, port, type, NULL, NULL); |
|
#endif |
|
return err; |
|
} |
|
|
|
void UPnP::PortMapping () |
|
{ |
|
auto a = context.GetRouterInfo().GetAddresses(); |
|
if (!a) return; |
|
for (const auto& address : *a) |
|
{ |
|
if (address && !address->host.is_v6 () && address->port) |
|
TryPortMapping (address); |
|
} |
|
m_Timer.expires_from_now (boost::posix_time::minutes(UPNP_PORT_FORWARDING_INTERVAL)); // every 20 minutes |
|
m_Timer.async_wait ([this](const boost::system::error_code& ecode) |
|
{ |
|
if (ecode != boost::asio::error::operation_aborted) |
|
PortMapping (); |
|
}); |
|
} |
|
|
|
void UPnP::TryPortMapping (std::shared_ptr<i2p::data::RouterInfo::Address> address) |
|
{ |
|
std::string strType (GetProto (address)), strPort (std::to_string (address->port)); |
|
std::string strDesc; i2p::config::GetOption("upnp.name", strDesc); |
|
int err = UPNPCOMMAND_SUCCESS; |
|
|
|
// check for existing mapping |
|
err = CheckMapping (strPort.c_str (), strType.c_str ()); |
|
if (err != UPNPCOMMAND_SUCCESS) // if mapping not found |
|
{ |
|
LogPrint (eLogDebug, "UPnP: Port ", strPort, " is possibly not forwarded: return code ", err); |
|
|
|
#if ((MINIUPNPC_API_VERSION >= 8) || defined (UPNPDISCOVER_SUCCESS)) |
|
err = UPNP_AddPortMapping (m_upnpUrls.controlURL, m_upnpData.first.servicetype, strPort.c_str (), strPort.c_str (), m_NetworkAddr, strDesc.c_str (), strType.c_str (), NULL, NULL); |
|
#else |
|
err = UPNP_AddPortMapping (m_upnpUrls.controlURL, m_upnpData.first.servicetype, strPort.c_str (), strPort.c_str (), m_NetworkAddr, strDesc.c_str (), strType.c_str (), NULL); |
|
#endif |
|
if (err != UPNPCOMMAND_SUCCESS) |
|
{ |
|
LogPrint (eLogError, "UPnP: Port forwarding to ", m_NetworkAddr, ":", strPort, " failed: return code ", err); |
|
return; |
|
} |
|
else |
|
{ |
|
LogPrint (eLogInfo, "UPnP: Port successfully forwarded (", m_externalIPAddress ,":", strPort, " type ", strType, " -> ", m_NetworkAddr ,":", strPort ,")"); |
|
return; |
|
} |
|
} |
|
else |
|
{ |
|
LogPrint (eLogDebug, "UPnP: External forward from ", m_NetworkAddr, ":", strPort, " exists on current Internet Gateway Device"); |
|
return; |
|
} |
|
} |
|
|
|
void UPnP::CloseMapping () |
|
{ |
|
auto a = context.GetRouterInfo().GetAddresses(); |
|
if (!a) return; |
|
for (const auto& address : *a) |
|
{ |
|
if (address && !address->host.is_v6 () && address->port) |
|
CloseMapping (address); |
|
} |
|
} |
|
|
|
void UPnP::CloseMapping (std::shared_ptr<i2p::data::RouterInfo::Address> address) |
|
{ |
|
if(!m_upnpUrlsInitialized) { |
|
return; |
|
} |
|
std::string strType (GetProto (address)), strPort (std::to_string (address->port)); |
|
int err = UPNPCOMMAND_SUCCESS; |
|
|
|
err = CheckMapping (strPort.c_str (), strType.c_str ()); |
|
if (err == UPNPCOMMAND_SUCCESS) |
|
{ |
|
err = UPNP_DeletePortMapping (m_upnpUrls.controlURL, m_upnpData.first.servicetype, strPort.c_str (), strType.c_str (), NULL); |
|
LogPrint (eLogError, "UPnP: DeletePortMapping() returned : ", err); |
|
} |
|
} |
|
|
|
void UPnP::Close () |
|
{ |
|
freeUPNPDevlist (m_Devlist); |
|
m_Devlist = 0; |
|
if(m_upnpUrlsInitialized){ |
|
FreeUPNPUrls (&m_upnpUrls); |
|
m_upnpUrlsInitialized=false; |
|
} |
|
} |
|
|
|
std::string UPnP::GetProto (std::shared_ptr<i2p::data::RouterInfo::Address> address) |
|
{ |
|
switch (address->transportStyle) |
|
{ |
|
case i2p::data::RouterInfo::eTransportNTCP2: |
|
return "TCP"; |
|
break; |
|
case i2p::data::RouterInfo::eTransportSSU2: |
|
default: |
|
return "UDP"; |
|
} |
|
} |
|
} |
|
} |
|
#else /* USE_UPNP */ |
|
namespace i2p { |
|
namespace transport { |
|
} |
|
} |
|
#endif /* USE_UPNP */
|
|
|