i2pd/UPnP.cpp

227 lines
7.6 KiB
C++

#ifdef USE_UPNP
#include <string>
#include <thread>
#include <boost/thread/thread.hpp>
#include <boost/asio.hpp>
#include <boost/bind.hpp>
#include "Log.h"
#include "RouterContext.h"
#include "UPnP.h"
#include "NetDb.h"
#include "util.h"
#include <miniupnpc/miniupnpc.h>
#include <miniupnpc/upnpcommands.h>
#include <dlfcn.h>
#ifndef UPNPDISCOVER_SUCCESS
/* miniupnpc 1.5 */
typedef UPNPDev* (*upnp_upnpDiscoverFunc) (int, const char *, const char *, int);
typedef int (*upnp_UPNP_AddPortMappingFunc) (const char *, const char *, const char *, const char *,
const char *, const char *, const char *, const char *);
#else
/* miniupnpc 1.6 */
typedef UPNPDev* (*upnp_upnpDiscoverFunc) (int, const char *, const char *, int, int, int *);
typedef int (*upnp_UPNP_AddPortMappingFunc) (const char *, const char *, const char *, const char *,
const char *, const char *, const char *, const char *, const char *);
#endif
typedef int (*upnp_UPNP_GetValidIGDFunc) (struct UPNPDev *, struct UPNPUrls *, struct IGDdatas *, char *, int);
typedef int (*upnp_UPNP_GetExternalIPAddressFunc) (const char *, const char *, char *);
typedef int (*upnp_UPNP_DeletePortMappingFunc) (const char *, const char *, const char *, const char *, const char *);
typedef void (*upnp_freeUPNPDevlistFunc) (struct UPNPDev *);
typedef void (*upnp_FreeUPNPUrlsFunc) (struct UPNPUrls *);
namespace i2p
{
namespace UPnP
{
UPnP upnpc;
UPnP::UPnP () : m_Thread (nullptr) , m_IsModuleLoaded (false)
{
}
void UPnP::Stop ()
{
if (m_Thread)
{
m_Thread->join ();
delete m_Thread;
m_Thread = nullptr;
}
}
void UPnP::Start()
{
m_Thread = new std::thread (std::bind (&UPnP::Run, this));
}
UPnP::~UPnP ()
{
}
void UPnP::Run ()
{
#ifdef MAC_OSX
m_Module = dlopen ("libminiupnpc.dylib", RTLD_LAZY);
#elif WIN32
m_Module = dlopen ("libminiupnpc.dll", RTLD_LAZY);
#else
m_Module = dlopen ("libminiupnpc.so", RTLD_LAZY);
#endif
if (!m_Module)
{
LogPrint ("no UPnP module available (", dlerror (), ")");
return;
}
else
{
m_IsModuleLoaded = true;
}
for (auto& address : context.GetRouterInfo ().GetAddresses ())
{
if (!address.host.is_v6 ())
{
m_Port = std::to_string (util::config::GetArg ("-port", address.port));
Discover ();
if (address.transportStyle == data::RouterInfo::eTransportSSU )
{
TryPortMapping (I2P_UPNP_UDP);
}
else if (address.transportStyle == data::RouterInfo::eTransportNTCP )
{
TryPortMapping (I2P_UPNP_TCP);
}
}
}
}
void UPnP::Discover ()
{
const char *error;
upnp_upnpDiscoverFunc upnpDiscoverFunc = (upnp_upnpDiscoverFunc) dlsym (m_Module, "upnpDiscover");
// reinterpret_cast<upnp_upnpDiscoverFunc> (dlsym(...));
if ( (error = dlerror ()))
{
LogPrint ("Error loading UPNP library. This often happens if there is version mismatch!");
return;
}
#ifndef UPNPDISCOVER_SUCCESS
/* miniupnpc 1.5 */
m_Devlist = upnpDiscoverFunc (2000, m_MulticastIf, m_Minissdpdpath, 0);
#else
/* miniupnpc 1.6 */
int nerror = 0;
m_Devlist = upnpDiscoverFunc (2000, m_MulticastIf, m_Minissdpdpath, 0, 0, &nerror);
#endif
int r;
upnp_UPNP_GetValidIGDFunc UPNP_GetValidIGDFunc = (upnp_UPNP_GetValidIGDFunc) dlsym (m_Module, "UPNP_GetValidIGD");
r = (*UPNP_GetValidIGDFunc) (m_Devlist, &m_upnpUrls, &m_upnpData, m_NetworkAddr, sizeof (m_NetworkAddr));
if (r == 1)
{
upnp_UPNP_GetExternalIPAddressFunc UPNP_GetExternalIPAddressFunc = (upnp_UPNP_GetExternalIPAddressFunc) dlsym (m_Module, "UPNP_GetExternalIPAddress");
r = UPNP_GetExternalIPAddressFunc (m_upnpUrls.controlURL, m_upnpData.first.servicetype, m_externalIPAddress);
if(r != UPNPCOMMAND_SUCCESS)
{
LogPrint ("UPnP: UPNP_GetExternalIPAddress () returned ", r);
return;
}
else
{
if (m_externalIPAddress[0])
{
LogPrint ("UPnP: ExternalIPAddress = ", m_externalIPAddress);
i2p::context.UpdateAddress (boost::asio::ip::address::from_string (m_externalIPAddress));
return;
}
else
{
LogPrint ("UPnP: GetExternalIPAddress failed.");
return;
}
}
}
}
void UPnP::TryPortMapping (int type)
{
std::string strType;
switch (type)
{
case I2P_UPNP_TCP:
strType = "TCP";
break;
case I2P_UPNP_UDP:
default:
strType = "UDP";
}
int r;
std::string strDesc = "I2Pd";
try {
for (;;) {
upnp_UPNP_AddPortMappingFunc UPNP_AddPortMappingFunc = (upnp_UPNP_AddPortMappingFunc) dlsym(m_Module, "UPNP_AddPortMapping");
#ifndef UPNPDISCOVER_SUCCESS
/* miniupnpc 1.5 */
r = UPNP_AddPortMappingFunc (m_upnpUrls.controlURL, m_upnpData.first.servicetype, m_Port.c_str (), m_Port.c_str (), m_NetworkAddr, strDesc.c_str (), strType.c_str (), 0);
#else
/* miniupnpc 1.6 */
r = UPNP_AddPortMappingFunc (m_upnpUrls.controlURL, m_upnpData.first.servicetype, m_Port.c_str (), m_Port.c_str (), m_NetworkAddr, strDesc.c_str (), strType.c_str (), 0, "0");
#endif
if (r!=UPNPCOMMAND_SUCCESS)
{
LogPrint ("AddPortMapping (", m_Port.c_str () ,", ", m_Port.c_str () ,", ", m_NetworkAddr, ") failed with code ", r);
return;
}
else
{
LogPrint ("UPnP Port Mapping successful. (", m_NetworkAddr ,":", m_Port.c_str(), " type ", strType.c_str () ," -> ", m_externalIPAddress ,":", m_Port.c_str() ,")");
return;
}
sleep(20*60);
}
}
catch (boost::thread_interrupted)
{
CloseMapping(type);
Close();
throw;
}
}
void UPnP::CloseMapping (int type)
{
std::string strType;
switch (type)
{
case I2P_UPNP_TCP:
strType = "TCP";
break;
case I2P_UPNP_UDP:
default:
strType = "UDP";
}
int r = 0;
upnp_UPNP_DeletePortMappingFunc UPNP_DeletePortMappingFunc = (upnp_UPNP_DeletePortMappingFunc) dlsym (m_Module, "UPNP_DeletePortMapping");
r = UPNP_DeletePortMappingFunc (m_upnpUrls.controlURL, m_upnpData.first.servicetype, m_Port.c_str (), strType.c_str (), 0);
LogPrint ("UPNP_DeletePortMapping() returned : ", r, "\n");
}
void UPnP::Close ()
{
upnp_freeUPNPDevlistFunc freeUPNPDevlistFunc = (upnp_freeUPNPDevlistFunc) dlsym (m_Module, "freeUPNPDevlist");
freeUPNPDevlistFunc (m_Devlist);
m_Devlist = 0;
upnp_FreeUPNPUrlsFunc FreeUPNPUrlsFunc = (upnp_FreeUPNPUrlsFunc) dlsym (m_Module, "FreeUPNPUrlsFunc");
FreeUPNPUrlsFunc (&m_upnpUrls);
dlclose (m_Module);
}
}
}
#endif