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.
492 lines
14 KiB
492 lines
14 KiB
#include <fstream> |
|
#include "Config.h" |
|
#include "Crypto.h" |
|
#include "Timestamp.h" |
|
#include "I2NPProtocol.h" |
|
#include "NetDb.hpp" |
|
#include "FS.h" |
|
#include "util.h" |
|
#include "version.h" |
|
#include "Log.h" |
|
#include "Family.h" |
|
#include "RouterContext.h" |
|
|
|
namespace i2p |
|
{ |
|
RouterContext context; |
|
|
|
RouterContext::RouterContext (): |
|
m_LastUpdateTime (0), m_AcceptsTunnels (true), m_IsFloodfill (false), |
|
m_StartupTime (0), m_ShareRatio (100), m_Status (eRouterStatusOK), |
|
m_Error (eRouterErrorNone), m_NetID (I2PD_NET_ID) |
|
{ |
|
} |
|
|
|
void RouterContext::Init () |
|
{ |
|
srand (i2p::util::GetMillisecondsSinceEpoch () % 1000); |
|
m_StartupTime = i2p::util::GetSecondsSinceEpoch (); |
|
if (!Load ()) |
|
CreateNewRouter (); |
|
m_Decryptor = m_Keys.CreateDecryptor (nullptr); |
|
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 |
|
bool ipv4; i2p::config::GetOption("ipv4", ipv4); |
|
bool ipv6; i2p::config::GetOption("ipv6", ipv6); |
|
bool nat; i2p::config::GetOption("nat", nat); |
|
std::string ifname; i2p::config::GetOption("ifname", ifname); |
|
std::string ifname4; i2p::config::GetOption("ifname4", ifname4); |
|
std::string ifname6; i2p::config::GetOption("ifname6", ifname6); |
|
if (ipv4) |
|
{ |
|
std::string host = "127.0.0.1"; |
|
if (!i2p::config::IsDefault("host")) |
|
i2p::config::GetOption("host", host); |
|
else if (!nat && !ifname.empty()) |
|
/* bind to interface, we have no NAT so set external address too */ |
|
host = i2p::util::net::GetInterfaceAddress(ifname, false).to_string(); // v4 |
|
|
|
if(ifname4.size()) |
|
host = i2p::util::net::GetInterfaceAddress(ifname4, false).to_string(); |
|
|
|
routerInfo.AddSSUAddress (host.c_str(), port, routerInfo.GetIdentHash ()); |
|
routerInfo.AddNTCPAddress (host.c_str(), port); |
|
} |
|
if (ipv6) |
|
{ |
|
std::string host = "::"; |
|
if (!i2p::config::IsDefault("host") && !ipv4) // override if v6 only |
|
i2p::config::GetOption("host", host); |
|
else if (!ifname.empty()) |
|
host = i2p::util::net::GetInterfaceAddress(ifname, true).to_string(); // v6 |
|
|
|
if(ifname6.size()) |
|
host = i2p::util::net::GetInterfaceAddress(ifname6, true).to_string(); |
|
|
|
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 (m_NetID)); |
|
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; |
|
m_Error = eRouterErrorNone; |
|
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 (i2p::data::ROUTER_INFO_PROPERTY_LEASESETS); |
|
m_RouterInfo.DeleteProperty (i2p::data::ROUTER_INFO_PROPERTY_ROUTERS); |
|
} |
|
UpdateRouterInfo (); |
|
} |
|
|
|
std::string RouterContext::GetFamily () const |
|
{ |
|
return m_RouterInfo.GetProperty (i2p::data::ROUTER_INFO_PROPERTY_FAMILY); |
|
} |
|
|
|
void RouterContext::SetFamily (const std::string& family) |
|
{ |
|
std::string signature; |
|
if (family.length () > 0) |
|
signature = i2p::data::CreateFamilySignature (family, GetIdentHash ()); |
|
if (signature.length () > 0) |
|
{ |
|
m_RouterInfo.SetProperty (i2p::data::ROUTER_INFO_PROPERTY_FAMILY, family); |
|
m_RouterInfo.SetProperty (i2p::data::ROUTER_INFO_PROPERTY_FAMILY_SIG, signature); |
|
} |
|
else |
|
{ |
|
m_RouterInfo.DeleteProperty (i2p::data::ROUTER_INFO_PROPERTY_FAMILY); |
|
m_RouterInfo.DeleteProperty (i2p::data::ROUTER_INFO_PROPERTY_FAMILY_SIG); |
|
} |
|
} |
|
|
|
void RouterContext::SetBandwidth (char L) |
|
{ |
|
uint32_t limit = 0; |
|
enum { low, high, extra, unlim } type = high; |
|
/* detect parameters */ |
|
switch (L) |
|
{ |
|
case i2p::data::CAPS_FLAG_LOW_BANDWIDTH1 : limit = 12; type = low; break; |
|
case i2p::data::CAPS_FLAG_LOW_BANDWIDTH2 : limit = 48; type = low; break; |
|
case i2p::data::CAPS_FLAG_HIGH_BANDWIDTH1 : limit = 64; type = high; break; |
|
case i2p::data::CAPS_FLAG_HIGH_BANDWIDTH2 : limit = 128; type = high; break; |
|
case i2p::data::CAPS_FLAG_HIGH_BANDWIDTH3 : limit = 256; type = high; break; |
|
case i2p::data::CAPS_FLAG_EXTRA_BANDWIDTH1 : limit = 2048; type = extra; break; |
|
case i2p::data::CAPS_FLAG_EXTRA_BANDWIDTH2 : limit = 1000000; type = unlim; break; // 1Gbyte/s |
|
default: |
|
limit = 48; type = low; |
|
} |
|
/* update caps & flags in RI */ |
|
auto caps = m_RouterInfo.GetCaps (); |
|
caps &= ~i2p::data::RouterInfo::eHighBandwidth; |
|
caps &= ~i2p::data::RouterInfo::eExtraBandwidth; |
|
switch (type) |
|
{ |
|
case low : /* not set */; break; |
|
case extra : caps |= i2p::data::RouterInfo::eExtraBandwidth; break; // 'P' |
|
case unlim : caps |= i2p::data::RouterInfo::eExtraBandwidth; // no break here, extra + high means 'X' |
|
case high : caps |= i2p::data::RouterInfo::eHighBandwidth; break; |
|
} |
|
m_RouterInfo.SetCaps (caps); |
|
UpdateRouterInfo (); |
|
m_BandwidthLimit = limit; |
|
} |
|
|
|
void RouterContext::SetBandwidth (int limit) |
|
{ |
|
if (limit > 2000) { SetBandwidth('X'); } |
|
else if (limit > 256) { SetBandwidth('P'); } |
|
else if (limit > 128) { SetBandwidth('O'); } |
|
else if (limit > 64) { SetBandwidth('N'); } |
|
else if (limit > 48) { SetBandwidth('M'); } |
|
else if (limit > 12) { SetBandwidth('L'); } |
|
else { SetBandwidth('K'); } |
|
} |
|
|
|
void RouterContext::SetShareRatio (int percents) |
|
{ |
|
if (percents < 0) percents = 0; |
|
if (percents > 100) percents = 100; |
|
m_ShareRatio = percents; |
|
} |
|
|
|
bool RouterContext::IsUnreachable () const |
|
{ |
|
return m_RouterInfo.GetCaps () & i2p::data::RouterInfo::eUnreachable; |
|
} |
|
|
|
void RouterContext::SetUnreachable () |
|
{ |
|
// set caps |
|
uint8_t caps = m_RouterInfo.GetCaps (); |
|
caps &= ~i2p::data::RouterInfo::eReachable; |
|
caps |= i2p::data::RouterInfo::eUnreachable; |
|
caps &= ~i2p::data::RouterInfo::eFloodfill; // can't be floodfill |
|
caps &= ~i2p::data::RouterInfo::eSSUIntroducer; // can't be introducer |
|
m_RouterInfo.SetCaps (caps); |
|
// remove NTCP address |
|
auto& addresses = m_RouterInfo.GetAddresses (); |
|
for (auto it = addresses.begin (); it != addresses.end (); ++it) |
|
{ |
|
if ((*it)->transportStyle == i2p::data::RouterInfo::eTransportNTCP && |
|
(*it)->host.is_v4 ()) |
|
{ |
|
addresses.erase (it); |
|
break; |
|
} |
|
} |
|
// delete previous introducers |
|
for (auto& addr : addresses) |
|
if (addr->ssu) |
|
addr->ssu->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 (const auto& addr : addresses) |
|
{ |
|
if (addr->transportStyle == i2p::data::RouterInfo::eTransportSSU && |
|
addr->host.is_v4 ()) |
|
{ |
|
// insert NTCP address with host/port from SSU |
|
m_RouterInfo.AddNTCPAddress (addr->host.to_string ().c_str (), addr->port); |
|
break; |
|
} |
|
} |
|
// delete previous introducers |
|
for (auto& addr : addresses) |
|
if (addr->ssu) |
|
addr->ssu->introducers.clear (); |
|
|
|
// update |
|
UpdateRouterInfo (); |
|
} |
|
|
|
void RouterContext::SetSupportsV6 (bool supportsV6) |
|
{ |
|
if (supportsV6) |
|
m_RouterInfo.EnableV6 (); |
|
else |
|
m_RouterInfo.DisableV6 (); |
|
UpdateRouterInfo (); |
|
} |
|
|
|
void RouterContext::SetSupportsV4 (bool supportsV4) |
|
{ |
|
if (supportsV4) |
|
m_RouterInfo.EnableV4 (); |
|
else |
|
m_RouterInfo.DisableV4 (); |
|
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 (i2p::data::ROUTER_INFO_PROPERTY_LEASESETS, std::to_string(i2p::data::netdb.GetNumLeaseSets ())); |
|
m_RouterInfo.SetProperty (i2p::data::ROUTER_INFO_PROPERTY_ROUTERS, std::to_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; |
|
} |
|
|
|
m_RouterInfo.SetRouterIdentity (GetIdentity ()); |
|
i2p::data::RouterInfo routerInfo(i2p::fs::DataDirPath (ROUTER_INFO)); |
|
if (!routerInfo.IsUnreachable ()) // router.info looks good |
|
{ |
|
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"); |
|
} |
|
else |
|
{ |
|
LogPrint (eLogError, ROUTER_INFO, " is malformed. Creating new"); |
|
NewRouterInfo (); |
|
} |
|
|
|
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, len), 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); |
|
} |
|
|
|
void RouterContext::CleanupDestination () |
|
{ |
|
std::unique_lock<std::mutex> l(m_GarlicMutex); |
|
i2p::garlic::GarlicDestination::CleanupExpiredTags (); |
|
} |
|
|
|
uint32_t RouterContext::GetUptime () const |
|
{ |
|
return i2p::util::GetSecondsSinceEpoch () - m_StartupTime; |
|
} |
|
|
|
bool RouterContext::Decrypt (const uint8_t * encrypted, uint8_t * data, BN_CTX * ctx) const |
|
{ |
|
return m_Decryptor ? m_Decryptor->Decrypt (encrypted, data, ctx, true) : false; |
|
} |
|
|
|
bool RouterContext::DecryptTunnelBuildRecord (const uint8_t * encrypted, uint8_t * data, BN_CTX * ctx) const |
|
{ |
|
return m_Decryptor ? m_Decryptor->Decrypt (encrypted, data, ctx, false) : false; |
|
} |
|
}
|
|
|