mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-30 09:48:54 +00:00
334 lines
10 KiB
C++
334 lines
10 KiB
C++
/*
|
|
* ZeroTier One - Network Virtualization Everywhere
|
|
* Copyright (C) 2011-2017 ZeroTier, Inc. https://www.zerotier.com/
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* --
|
|
*
|
|
* You can be released from the requirements of the license by purchasing
|
|
* a commercial license. Buying such a license is mandatory as soon as you
|
|
* develop commercial closed-source software that incorporates or links
|
|
* directly against ZeroTier software without disclosing the source code
|
|
* of your own application.
|
|
*/
|
|
|
|
#ifdef ZT_USE_MINIUPNPC
|
|
|
|
// Uncomment to dump debug messages
|
|
//#define ZT_PORTMAPPER_TRACE 1
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <string>
|
|
|
|
#include "../node/Utils.hpp"
|
|
#include "OSUtils.hpp"
|
|
#include "PortMapper.hpp"
|
|
|
|
// These must be defined to get rid of dynamic export stuff in libminiupnpc and libnatpmp
|
|
#ifdef __WINDOWS__
|
|
#ifndef MINIUPNP_STATICLIB
|
|
#define MINIUPNP_STATICLIB
|
|
#endif
|
|
#ifndef STATICLIB
|
|
#define STATICLIB
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef ZT_USE_SYSTEM_MINIUPNPC
|
|
#include <miniupnpc/miniupnpc.h>
|
|
#include <miniupnpc/upnpcommands.h>
|
|
#else
|
|
#include "../ext/miniupnpc/miniupnpc.h"
|
|
#include "../ext/miniupnpc/upnpcommands.h"
|
|
#endif
|
|
|
|
#ifdef ZT_USE_SYSTEM_NATPMP
|
|
#include <natpmp.h>
|
|
#else
|
|
#include "../ext/libnatpmp/natpmp.h"
|
|
#endif
|
|
|
|
namespace ZeroTier {
|
|
|
|
class PortMapperImpl
|
|
{
|
|
public:
|
|
PortMapperImpl(int localUdpPortToMap,const char *un) :
|
|
run(true),
|
|
localPort(localUdpPortToMap),
|
|
uniqueName(un)
|
|
{
|
|
}
|
|
|
|
~PortMapperImpl() {}
|
|
|
|
void threadMain()
|
|
throw()
|
|
{
|
|
int mode = 0; // 0 == NAT-PMP, 1 == UPnP
|
|
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"PortMapper: started for UDP port %d"ZT_EOL_S,localPort);
|
|
#endif
|
|
|
|
while (run) {
|
|
|
|
// ---------------------------------------------------------------------
|
|
// NAT-PMP mode (preferred)
|
|
// ---------------------------------------------------------------------
|
|
if (mode == 0) {
|
|
natpmp_t natpmp;
|
|
natpmpresp_t response;
|
|
int r = 0;
|
|
|
|
bool natPmpSuccess = false;
|
|
for(int tries=0;tries<60;++tries) {
|
|
int tryPort = (int)localPort + tries;
|
|
if (tryPort >= 65535)
|
|
tryPort = (tryPort - 65535) + 1025;
|
|
|
|
memset(&natpmp,0,sizeof(natpmp));
|
|
memset(&response,0,sizeof(response));
|
|
|
|
if (initnatpmp(&natpmp,0,0) != 0) {
|
|
mode = 1;
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"PortMapper: NAT-PMP: init failed, switching to UPnP mode"ZT_EOL_S);
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
InetAddress publicAddress;
|
|
sendpublicaddressrequest(&natpmp);
|
|
uint64_t myTimeout = OSUtils::now() + 5000;
|
|
do {
|
|
fd_set fds;
|
|
struct timeval timeout;
|
|
FD_ZERO(&fds);
|
|
FD_SET(natpmp.s, &fds);
|
|
getnatpmprequesttimeout(&natpmp, &timeout);
|
|
select(FD_SETSIZE, &fds, NULL, NULL, &timeout);
|
|
r = readnatpmpresponseorretry(&natpmp, &response);
|
|
if (OSUtils::now() >= myTimeout)
|
|
break;
|
|
} while (r == NATPMP_TRYAGAIN);
|
|
if (r == 0) {
|
|
publicAddress = InetAddress((uint32_t)response.pnu.publicaddress.addr.s_addr,0);
|
|
} else {
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"PortMapper: NAT-PMP: request for external address failed, aborting..."ZT_EOL_S);
|
|
#endif
|
|
closenatpmp(&natpmp);
|
|
break;
|
|
}
|
|
|
|
sendnewportmappingrequest(&natpmp,NATPMP_PROTOCOL_UDP,localPort,tryPort,(ZT_PORTMAPPER_REFRESH_DELAY * 2) / 1000);
|
|
myTimeout = OSUtils::now() + 10000;
|
|
do {
|
|
fd_set fds;
|
|
struct timeval timeout;
|
|
FD_ZERO(&fds);
|
|
FD_SET(natpmp.s, &fds);
|
|
getnatpmprequesttimeout(&natpmp, &timeout);
|
|
select(FD_SETSIZE, &fds, NULL, NULL, &timeout);
|
|
r = readnatpmpresponseorretry(&natpmp, &response);
|
|
if (OSUtils::now() >= myTimeout)
|
|
break;
|
|
} while (r == NATPMP_TRYAGAIN);
|
|
if (r == 0) {
|
|
publicAddress.setPort(response.pnu.newportmapping.mappedpublicport);
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"PortMapper: NAT-PMP: mapped %u to %s"ZT_EOL_S,(unsigned int)localPort,publicAddress.toString().c_str());
|
|
#endif
|
|
Mutex::Lock sl(surface_l);
|
|
surface.clear();
|
|
surface.push_back(publicAddress);
|
|
natPmpSuccess = true;
|
|
closenatpmp(&natpmp);
|
|
break;
|
|
} else {
|
|
closenatpmp(&natpmp);
|
|
// continue
|
|
}
|
|
}
|
|
|
|
if (!natPmpSuccess) {
|
|
mode = 1;
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"PortMapper: NAT-PMP: request failed, switching to UPnP mode"ZT_EOL_S);
|
|
#endif
|
|
}
|
|
}
|
|
// ---------------------------------------------------------------------
|
|
|
|
// ---------------------------------------------------------------------
|
|
// UPnP mode
|
|
// ---------------------------------------------------------------------
|
|
if (mode == 1) {
|
|
char lanaddr[4096];
|
|
char externalip[4096]; // no range checking? so make these buffers larger than any UDP packet a uPnP server could send us as a precaution :P
|
|
char inport[16];
|
|
char outport[16];
|
|
struct UPNPUrls urls;
|
|
struct IGDdatas data;
|
|
|
|
int upnpError = 0;
|
|
UPNPDev *devlist = upnpDiscoverAll(5000,(const char *)0,(const char *)0,0,0,2,&upnpError);
|
|
if (devlist) {
|
|
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
{
|
|
UPNPDev *dev = devlist;
|
|
while (dev) {
|
|
fprintf(stderr,"PortMapper: found UPnP device at URL '%s': %s"ZT_EOL_S,dev->descURL,dev->st);
|
|
dev = dev->pNext;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
memset(lanaddr,0,sizeof(lanaddr));
|
|
memset(externalip,0,sizeof(externalip));
|
|
memset(&urls,0,sizeof(urls));
|
|
memset(&data,0,sizeof(data));
|
|
OSUtils::ztsnprintf(inport,sizeof(inport),"%d",localPort);
|
|
|
|
if ((UPNP_GetValidIGD(devlist,&urls,&data,lanaddr,sizeof(lanaddr)))&&(lanaddr[0])) {
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"PortMapper: UPnP: my LAN IP address: %s"ZT_EOL_S,lanaddr);
|
|
#endif
|
|
if ((UPNP_GetExternalIPAddress(urls.controlURL,data.first.servicetype,externalip) == UPNPCOMMAND_SUCCESS)&&(externalip[0])) {
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"PortMapper: UPnP: my external IP address: %s"ZT_EOL_S,externalip);
|
|
#endif
|
|
|
|
for(int tries=0;tries<60;++tries) {
|
|
int tryPort = (int)localPort + tries;
|
|
if (tryPort >= 65535)
|
|
tryPort = (tryPort - 65535) + 1025;
|
|
OSUtils::ztsnprintf(outport,sizeof(outport),"%u",tryPort);
|
|
|
|
// First check and see if this port is already mapped to the
|
|
// same unique name. If so, keep this mapping and don't try
|
|
// to map again since this can break buggy routers. But don't
|
|
// fail if this command fails since not all routers support it.
|
|
{
|
|
char haveIntClient[128]; // 128 == big enough for all these as per miniupnpc "documentation"
|
|
char haveIntPort[128];
|
|
char haveDesc[128];
|
|
char haveEnabled[128];
|
|
char haveLeaseDuration[128];
|
|
memset(haveIntClient,0,sizeof(haveIntClient));
|
|
memset(haveIntPort,0,sizeof(haveIntPort));
|
|
memset(haveDesc,0,sizeof(haveDesc));
|
|
memset(haveEnabled,0,sizeof(haveEnabled));
|
|
memset(haveLeaseDuration,0,sizeof(haveLeaseDuration));
|
|
if ((UPNP_GetSpecificPortMappingEntry(urls.controlURL,data.first.servicetype,outport,"UDP",(const char *)0,haveIntClient,haveIntPort,haveDesc,haveEnabled,haveLeaseDuration) == UPNPCOMMAND_SUCCESS)&&(uniqueName == haveDesc)) {
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"PortMapper: UPnP: reusing previously reserved external port: %s"ZT_EOL_S,outport);
|
|
#endif
|
|
Mutex::Lock sl(surface_l);
|
|
surface.clear();
|
|
InetAddress tmp(externalip);
|
|
tmp.setPort(tryPort);
|
|
surface.push_back(tmp);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Try to map this port
|
|
int mapResult = 0;
|
|
if ((mapResult = UPNP_AddPortMapping(urls.controlURL,data.first.servicetype,outport,inport,lanaddr,uniqueName.c_str(),"UDP",(const char *)0,"0")) == UPNPCOMMAND_SUCCESS) {
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"PortMapper: UPnP: reserved external port: %s"ZT_EOL_S,outport);
|
|
#endif
|
|
Mutex::Lock sl(surface_l);
|
|
surface.clear();
|
|
InetAddress tmp(externalip);
|
|
tmp.setPort(tryPort);
|
|
surface.push_back(tmp);
|
|
break;
|
|
} else {
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"PortMapper: UPnP: UPNP_AddPortMapping(%s) failed: %d"ZT_EOL_S,outport,mapResult);
|
|
#endif
|
|
Thread::sleep(1000);
|
|
}
|
|
}
|
|
|
|
} else {
|
|
mode = 0;
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"PortMapper: UPnP: UPNP_GetExternalIPAddress failed, returning to NAT-PMP mode"ZT_EOL_S);
|
|
#endif
|
|
}
|
|
} else {
|
|
mode = 0;
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"PortMapper: UPnP: UPNP_GetValidIGD failed, returning to NAT-PMP mode"ZT_EOL_S);
|
|
#endif
|
|
}
|
|
|
|
freeUPNPDevlist(devlist);
|
|
|
|
} else {
|
|
mode = 0;
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"PortMapper: upnpDiscover failed, returning to NAT-PMP mode: %d"ZT_EOL_S,upnpError);
|
|
#endif
|
|
}
|
|
}
|
|
// ---------------------------------------------------------------------
|
|
|
|
#ifdef ZT_PORTMAPPER_TRACE
|
|
fprintf(stderr,"UPNPClient: rescanning in %d ms"ZT_EOL_S,ZT_PORTMAPPER_REFRESH_DELAY);
|
|
#endif
|
|
Thread::sleep(ZT_PORTMAPPER_REFRESH_DELAY);
|
|
}
|
|
|
|
delete this;
|
|
}
|
|
|
|
volatile bool run;
|
|
int localPort;
|
|
std::string uniqueName;
|
|
|
|
Mutex surface_l;
|
|
std::vector<InetAddress> surface;
|
|
};
|
|
|
|
PortMapper::PortMapper(int localUdpPortToMap,const char *uniqueName)
|
|
{
|
|
_impl = new PortMapperImpl(localUdpPortToMap,uniqueName);
|
|
Thread::start(_impl);
|
|
}
|
|
|
|
PortMapper::~PortMapper()
|
|
{
|
|
_impl->run = false;
|
|
}
|
|
|
|
std::vector<InetAddress> PortMapper::get() const
|
|
{
|
|
Mutex::Lock _l(_impl->surface_l);
|
|
return _impl->surface;
|
|
}
|
|
|
|
} // namespace ZeroTier
|
|
|
|
#endif // ZT_USE_MINIUPNPC
|