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.
369 lines
10 KiB
369 lines
10 KiB
#include <fstream> |
|
#include <boost/lexical_cast.hpp> |
|
#include "Config.h" |
|
#include "Crypto.h" |
|
#include "Timestamp.h" |
|
#include "I2NPProtocol.h" |
|
#include "NetDb.h" |
|
#include "FS.h" |
|
#include "util.h" |
|
#include "version.h" |
|
#include "Log.h" |
|
#include "RouterContext.h" |
|
|
|
namespace i2p |
|
{ |
|
RouterContext context; |
|
|
|
RouterContext::RouterContext (): |
|
m_LastUpdateTime (0), m_AcceptsTunnels (true), m_IsFloodfill (false), |
|
m_StartupTime (0), m_Status (eRouterStatusOK ) |
|
{ |
|
} |
|
|
|
void RouterContext::Init () |
|
{ |
|
srand (i2p::util::GetMillisecondsSinceEpoch () % 1000); |
|
m_StartupTime = i2p::util::GetSecondsSinceEpoch (); |
|
if (!Load ()) |
|
CreateNewRouter (); |
|
UpdateRouterInfo (); |
|
} |
|
|
|
void RouterContext::CreateNewRouter () |
|
{ |
|
#if defined(__x86_64__) || defined(__i386__) || defined(_MSC_VER) |
|
m_Keys = i2p::data::PrivateKeys::CreateRandomKeys (i2p::data::SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519); |
|
#else |
|
m_Keys = i2p::data::PrivateKeys::CreateRandomKeys (i2p::data::SIGNING_KEY_TYPE_DSA_SHA1); |
|
#endif |
|
SaveKeys (); |
|
NewRouterInfo (); |
|
} |
|
|
|
void RouterContext::NewRouterInfo () |
|
{ |
|
i2p::data::RouterInfo routerInfo; |
|
routerInfo.SetRouterIdentity (GetIdentity ()); |
|
uint16_t port; i2p::config::GetOption("port", port); |
|
if (!port) |
|
port = rand () % (30777 - 9111) + 9111; // I2P network ports range |
|
std::string host; i2p::config::GetOption("host", host); |
|
if (i2p::config::IsDefault("host")) |
|
host = "127.0.0.1"; // replace default address with safe value |
|
routerInfo.AddSSUAddress (host.c_str(), port, routerInfo.GetIdentHash ()); |
|
routerInfo.AddNTCPAddress (host.c_str(), port); |
|
routerInfo.SetCaps (i2p::data::RouterInfo::eReachable | |
|
i2p::data::RouterInfo::eSSUTesting | i2p::data::RouterInfo::eSSUIntroducer); // LR, BC |
|
routerInfo.SetProperty ("netId", std::to_string (I2PD_NET_ID)); |
|
routerInfo.SetProperty ("router.version", I2P_VERSION); |
|
routerInfo.CreateBuffer (m_Keys); |
|
m_RouterInfo.SetRouterIdentity (GetIdentity ()); |
|
m_RouterInfo.Update (routerInfo.GetBuffer (), routerInfo.GetBufferLen ()); |
|
} |
|
|
|
void RouterContext::UpdateRouterInfo () |
|
{ |
|
m_RouterInfo.CreateBuffer (m_Keys); |
|
m_RouterInfo.SaveToFile (i2p::fs::DataDirPath (ROUTER_INFO)); |
|
m_LastUpdateTime = i2p::util::GetSecondsSinceEpoch (); |
|
} |
|
|
|
void RouterContext::SetStatus (RouterStatus status) |
|
{ |
|
if (status != m_Status) |
|
{ |
|
m_Status = status; |
|
switch (m_Status) |
|
{ |
|
case eRouterStatusOK: |
|
SetReachable (); |
|
break; |
|
case eRouterStatusFirewalled: |
|
SetUnreachable (); |
|
break; |
|
default: |
|
; |
|
} |
|
} |
|
} |
|
|
|
void RouterContext::UpdatePort (int port) |
|
{ |
|
bool updated = false; |
|
for (auto& address : m_RouterInfo.GetAddresses ()) |
|
{ |
|
if (address.port != port) |
|
{ |
|
address.port = port; |
|
updated = true; |
|
} |
|
} |
|
if (updated) |
|
UpdateRouterInfo (); |
|
} |
|
|
|
void RouterContext::UpdateAddress (const boost::asio::ip::address& host) |
|
{ |
|
bool updated = false; |
|
for (auto& address : m_RouterInfo.GetAddresses ()) |
|
{ |
|
if (address.host != host && address.IsCompatible (host)) |
|
{ |
|
address.host = host; |
|
updated = true; |
|
} |
|
} |
|
auto ts = i2p::util::GetSecondsSinceEpoch (); |
|
if (updated || ts > m_LastUpdateTime + ROUTER_INFO_UPDATE_INTERVAL) |
|
UpdateRouterInfo (); |
|
} |
|
|
|
bool RouterContext::AddIntroducer (const i2p::data::RouterInfo::Introducer& introducer) |
|
{ |
|
bool ret = m_RouterInfo.AddIntroducer (introducer); |
|
if (ret) |
|
UpdateRouterInfo (); |
|
return ret; |
|
} |
|
|
|
void RouterContext::RemoveIntroducer (const boost::asio::ip::udp::endpoint& e) |
|
{ |
|
if (m_RouterInfo.RemoveIntroducer (e)) |
|
UpdateRouterInfo (); |
|
} |
|
|
|
void RouterContext::SetFloodfill (bool floodfill) |
|
{ |
|
m_IsFloodfill = floodfill; |
|
if (floodfill) |
|
m_RouterInfo.SetCaps (m_RouterInfo.GetCaps () | i2p::data::RouterInfo::eFloodfill); |
|
else |
|
{ |
|
m_RouterInfo.SetCaps (m_RouterInfo.GetCaps () & ~i2p::data::RouterInfo::eFloodfill); |
|
// we don't publish number of routers and leaseset for non-floodfill |
|
m_RouterInfo.DeleteProperty (ROUTER_INFO_PROPERTY_LEASESETS); |
|
m_RouterInfo.DeleteProperty (ROUTER_INFO_PROPERTY_ROUTERS); |
|
} |
|
UpdateRouterInfo (); |
|
} |
|
|
|
void RouterContext::SetHighBandwidth () |
|
{ |
|
if (!m_RouterInfo.IsHighBandwidth () || m_RouterInfo.IsExtraBandwidth ()) |
|
{ |
|
m_RouterInfo.SetCaps ((m_RouterInfo.GetCaps () | i2p::data::RouterInfo::eHighBandwidth) & ~i2p::data::RouterInfo::eExtraBandwidth); |
|
UpdateRouterInfo (); |
|
} |
|
} |
|
|
|
void RouterContext::SetLowBandwidth () |
|
{ |
|
if (m_RouterInfo.IsHighBandwidth () || m_RouterInfo.IsExtraBandwidth ()) |
|
{ |
|
m_RouterInfo.SetCaps (m_RouterInfo.GetCaps () & ~i2p::data::RouterInfo::eHighBandwidth & ~i2p::data::RouterInfo::eExtraBandwidth); |
|
UpdateRouterInfo (); |
|
} |
|
} |
|
|
|
void RouterContext::SetExtraBandwidth () |
|
{ |
|
if (!m_RouterInfo.IsExtraBandwidth () || !m_RouterInfo.IsHighBandwidth ()) |
|
{ |
|
m_RouterInfo.SetCaps (m_RouterInfo.GetCaps () | i2p::data::RouterInfo::eExtraBandwidth | i2p::data::RouterInfo::eHighBandwidth); |
|
UpdateRouterInfo (); |
|
} |
|
} |
|
|
|
bool RouterContext::IsUnreachable () const |
|
{ |
|
return m_RouterInfo.GetCaps () & i2p::data::RouterInfo::eUnreachable; |
|
} |
|
|
|
void RouterContext::SetUnreachable () |
|
{ |
|
// set caps |
|
m_RouterInfo.SetCaps (i2p::data::RouterInfo::eUnreachable | i2p::data::RouterInfo::eSSUTesting); // LU, B |
|
// remove NTCP address |
|
auto& addresses = m_RouterInfo.GetAddresses (); |
|
for (size_t i = 0; i < addresses.size (); i++) |
|
{ |
|
if (addresses[i].transportStyle == i2p::data::RouterInfo::eTransportNTCP) |
|
{ |
|
addresses.erase (addresses.begin () + i); |
|
break; |
|
} |
|
} |
|
// delete previous introducers |
|
for (auto& addr : addresses) |
|
addr.introducers.clear (); |
|
|
|
// update |
|
UpdateRouterInfo (); |
|
} |
|
|
|
void RouterContext::SetReachable () |
|
{ |
|
// update caps |
|
uint8_t caps = m_RouterInfo.GetCaps (); |
|
caps &= ~i2p::data::RouterInfo::eUnreachable; |
|
caps |= i2p::data::RouterInfo::eReachable; |
|
caps |= i2p::data::RouterInfo::eSSUIntroducer; |
|
if (m_IsFloodfill) |
|
caps |= i2p::data::RouterInfo::eFloodfill; |
|
m_RouterInfo.SetCaps (caps); |
|
|
|
// insert NTCP back |
|
auto& addresses = m_RouterInfo.GetAddresses (); |
|
for (size_t i = 0; i < addresses.size (); i++) |
|
{ |
|
if (addresses[i].transportStyle == i2p::data::RouterInfo::eTransportSSU) |
|
{ |
|
// insert NTCP address with host/port from SSU |
|
m_RouterInfo.AddNTCPAddress (addresses[i].host.to_string ().c_str (), addresses[i].port); |
|
break; |
|
} |
|
} |
|
// delete previous introducers |
|
for (auto& addr : addresses) |
|
addr.introducers.clear (); |
|
|
|
// update |
|
UpdateRouterInfo (); |
|
} |
|
|
|
void RouterContext::SetSupportsV6 (bool supportsV6) |
|
{ |
|
if (supportsV6) |
|
m_RouterInfo.EnableV6 (); |
|
else |
|
m_RouterInfo.DisableV6 (); |
|
UpdateRouterInfo (); |
|
} |
|
|
|
void RouterContext::UpdateNTCPV6Address (const boost::asio::ip::address& host) |
|
{ |
|
bool updated = false, found = false; |
|
int port = 0; |
|
auto& addresses = m_RouterInfo.GetAddresses (); |
|
for (auto& addr : addresses) |
|
{ |
|
if (addr.host.is_v6 () && addr.transportStyle == i2p::data::RouterInfo::eTransportNTCP) |
|
{ |
|
if (addr.host != host) |
|
{ |
|
addr.host = host; |
|
updated = true; |
|
} |
|
found = true; |
|
} |
|
else |
|
port = addr.port; |
|
} |
|
if (!found) |
|
{ |
|
// create new address |
|
m_RouterInfo.AddNTCPAddress (host.to_string ().c_str (), port); |
|
auto mtu = i2p::util::net::GetMTU (host); |
|
if (mtu) |
|
{ |
|
LogPrint (eLogDebug, "Router: Our v6 MTU=", mtu); |
|
if (mtu > 1472) { // TODO: magic constant |
|
mtu = 1472; |
|
LogPrint(eLogWarning, "Router: MTU dropped to upper limit of 1472 bytes"); |
|
} |
|
} |
|
m_RouterInfo.AddSSUAddress (host.to_string ().c_str (), port, GetIdentHash (), mtu ? mtu : 1472); // TODO |
|
updated = true; |
|
} |
|
if (updated) |
|
UpdateRouterInfo (); |
|
} |
|
|
|
void RouterContext::UpdateStats () |
|
{ |
|
if (m_IsFloodfill) |
|
{ |
|
// update routers and leasesets |
|
m_RouterInfo.SetProperty (ROUTER_INFO_PROPERTY_LEASESETS, boost::lexical_cast<std::string>(i2p::data::netdb.GetNumLeaseSets ())); |
|
m_RouterInfo.SetProperty (ROUTER_INFO_PROPERTY_ROUTERS, boost::lexical_cast<std::string>(i2p::data::netdb.GetNumRouters ())); |
|
UpdateRouterInfo (); |
|
} |
|
} |
|
|
|
bool RouterContext::Load () |
|
{ |
|
std::ifstream fk (i2p::fs::DataDirPath (ROUTER_KEYS), std::ifstream::in | std::ifstream::binary); |
|
if (!fk.is_open ()) return false; |
|
fk.seekg (0, std::ios::end); |
|
size_t len = fk.tellg(); |
|
fk.seekg (0, std::ios::beg); |
|
|
|
if (len == sizeof (i2p::data::Keys)) // old keys file format |
|
{ |
|
i2p::data::Keys keys; |
|
fk.read ((char *)&keys, sizeof (keys)); |
|
m_Keys = keys; |
|
} |
|
else // new keys file format |
|
{ |
|
uint8_t * buf = new uint8_t[len]; |
|
fk.read ((char *)buf, len); |
|
m_Keys.FromBuffer (buf, len); |
|
delete[] buf; |
|
} |
|
|
|
i2p::data::RouterInfo routerInfo(i2p::fs::DataDirPath (ROUTER_INFO)); // TODO |
|
m_RouterInfo.SetRouterIdentity (GetIdentity ()); |
|
m_RouterInfo.Update (routerInfo.GetBuffer (), routerInfo.GetBufferLen ()); |
|
m_RouterInfo.SetProperty ("coreVersion", I2P_VERSION); |
|
m_RouterInfo.SetProperty ("router.version", I2P_VERSION); |
|
|
|
// Migration to 0.9.24. TODO: remove later |
|
m_RouterInfo.DeleteProperty ("coreVersion"); |
|
m_RouterInfo.DeleteProperty ("stat_uptime"); |
|
|
|
if (IsUnreachable ()) |
|
SetReachable (); // we assume reachable until we discover firewall through peer tests |
|
|
|
return true; |
|
} |
|
|
|
void RouterContext::SaveKeys () |
|
{ |
|
// save in the same format as .dat files |
|
std::ofstream fk (i2p::fs::DataDirPath (ROUTER_KEYS), std::ofstream::binary | std::ofstream::out); |
|
size_t len = m_Keys.GetFullLen (); |
|
uint8_t * buf = new uint8_t[len]; |
|
m_Keys.ToBuffer (buf, len); |
|
fk.write ((char *)buf, len); |
|
delete[] buf; |
|
} |
|
|
|
std::shared_ptr<i2p::tunnel::TunnelPool> RouterContext::GetTunnelPool () const |
|
{ |
|
return i2p::tunnel::tunnels.GetExploratoryPool (); |
|
} |
|
|
|
void RouterContext::HandleI2NPMessage (const uint8_t * buf, size_t len, std::shared_ptr<i2p::tunnel::InboundTunnel> from) |
|
{ |
|
i2p::HandleI2NPMessage (CreateI2NPMessage (buf, GetI2NPMessageLength (buf), from)); |
|
} |
|
|
|
void RouterContext::ProcessGarlicMessage (std::shared_ptr<I2NPMessage> msg) |
|
{ |
|
std::unique_lock<std::mutex> l(m_GarlicMutex); |
|
i2p::garlic::GarlicDestination::ProcessGarlicMessage (msg); |
|
} |
|
|
|
void RouterContext::ProcessDeliveryStatusMessage (std::shared_ptr<I2NPMessage> msg) |
|
{ |
|
std::unique_lock<std::mutex> l(m_GarlicMutex); |
|
i2p::garlic::GarlicDestination::ProcessDeliveryStatusMessage (msg); |
|
} |
|
|
|
uint32_t RouterContext::GetUptime () const |
|
{ |
|
return i2p::util::GetSecondsSinceEpoch () - m_StartupTime; |
|
} |
|
}
|
|
|