I2P: End-to-End encrypted and anonymous Internet https://i2pd.website/
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#include <fstream>
#include <iostream>
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/ini_parser.hpp>
#include "util.h"
#include "Log.h"
#include "Identity.h"
#include "ClientContext.h"
namespace i2p
{
namespace client
{
ClientContext context;
ClientContext::ClientContext (): m_SharedLocalDestination (nullptr),
m_HttpProxy (nullptr), m_SocksProxy (nullptr), m_SamBridge (nullptr),
m_BOBCommandChannel (nullptr)
{
}
ClientContext::~ClientContext ()
{
delete m_HttpProxy;
delete m_SocksProxy;
delete m_SamBridge;
delete m_BOBCommandChannel;
}
void ClientContext::Start ()
{
if (!m_SharedLocalDestination)
{
m_SharedLocalDestination = CreateNewLocalDestination (); // non-public, DSA
m_Destinations[m_SharedLocalDestination->GetIdentity ()->GetIdentHash ()] = m_SharedLocalDestination;
m_SharedLocalDestination->Start ();
}
std::shared_ptr<ClientDestination> localDestination;
// proxies
std::string proxyKeys = i2p::util::config::GetArg("-proxykeys", "");
if (proxyKeys.length () > 0)
{
i2p::data::PrivateKeys keys;
LoadPrivateKeys (keys, proxyKeys);
localDestination = CreateNewLocalDestination (keys, false);
}
LogPrint(eLogInfo, "Clients: starting HTTP Proxy");
m_HttpProxy = new i2p::proxy::HTTPProxy(i2p::util::config::GetArg("-httpproxyaddress", "127.0.0.1"), i2p::util::config::GetArg("-httpproxyport", 4446), localDestination);
m_HttpProxy->Start();
LogPrint(eLogInfo, "Clients: starting SOCKS Proxy");
m_SocksProxy = new i2p::proxy::SOCKSProxy(i2p::util::config::GetArg("-socksproxyaddress", "127.0.0.1"), i2p::util::config::GetArg("-socksproxyport", 4447), localDestination);
m_SocksProxy->Start();
// I2P tunnels
ReadTunnels ();
// SAM
int samPort = i2p::util::config::GetArg("-samport", 0);
if (samPort)
{
LogPrint(eLogInfo, "Clients: starting SAM bridge");
m_SamBridge = new SAMBridge (i2p::util::config::GetArg("-samaddress", "127.0.0.1"), samPort);
m_SamBridge->Start ();
}
// BOB
int bobPort = i2p::util::config::GetArg("-bobport", 0);
if (bobPort)
{
LogPrint(eLogInfo, "Clients: starting BOB command channel");
m_BOBCommandChannel = new BOBCommandChannel (i2p::util::config::GetArg("-bobaddress", "127.0.0.1"), bobPort);
m_BOBCommandChannel->Start ();
}
m_AddressBook.Start ();
}
void ClientContext::Stop ()
{
LogPrint(eLogInfo, "Clients: stopping HTTP Proxy");
m_HttpProxy->Stop();
delete m_HttpProxy;
m_HttpProxy = nullptr;
LogPrint(eLogInfo, "Clients: stopping SOCKS Proxy");
m_SocksProxy->Stop();
delete m_SocksProxy;
m_SocksProxy = nullptr;
for (auto& it: m_ClientTunnels)
{
LogPrint(eLogInfo, "Clients: stopping I2P client tunnel on port ", it.first);
it.second->Stop ();
}
m_ClientTunnels.clear ();
for (auto& it: m_ServerTunnels)
{
LogPrint(eLogInfo, "Clients: stopping I2P server tunnel");
it.second->Stop ();
}
m_ServerTunnels.clear ();
if (m_SamBridge)
{
LogPrint(eLogInfo, "Clients: stopping SAM bridge");
m_SamBridge->Stop ();
delete m_SamBridge;
m_SamBridge = nullptr;
}
if (m_BOBCommandChannel)
{
LogPrint(eLogInfo, "Clients: stopping BOB command channel");
m_BOBCommandChannel->Stop ();
delete m_BOBCommandChannel;
m_BOBCommandChannel = nullptr;
}
LogPrint(eLogInfo, "Clients: stopping AddressBook");
m_AddressBook.Stop ();
for (auto it: m_Destinations)
it.second->Stop ();
m_Destinations.clear ();
m_SharedLocalDestination = nullptr;
}
void ClientContext::LoadPrivateKeys (i2p::data::PrivateKeys& keys, const std::string& filename, i2p::data::SigningKeyType sigType)
{
std::string fullPath = i2p::util::filesystem::GetFullPath (filename);
std::ifstream s(fullPath.c_str (), std::ifstream::binary);
if (s.is_open ())
{
s.seekg (0, std::ios::end);
size_t len = s.tellg();
s.seekg (0, std::ios::beg);
uint8_t * buf = new uint8_t[len];
s.read ((char *)buf, len);
keys.FromBuffer (buf, len);
delete[] buf;
LogPrint (eLogInfo, "Clients: Local address ", m_AddressBook.ToAddress(keys.GetPublic ()->GetIdentHash ()), " loaded");
}
else
{
LogPrint (eLogError, "Clients: can't open file ", fullPath, " Creating new one with signature type ", sigType);
keys = i2p::data::PrivateKeys::CreateRandomKeys (sigType);
std::ofstream f (fullPath, std::ofstream::binary | std::ofstream::out);
size_t len = keys.GetFullLen ();
uint8_t * buf = new uint8_t[len];
len = keys.ToBuffer (buf, len);
f.write ((char *)buf, len);
delete[] buf;
LogPrint (eLogInfo, "Clients: New private keys file ", fullPath, " for ", m_AddressBook.ToAddress(keys.GetPublic ()->GetIdentHash ()), " created");
}
}
std::shared_ptr<ClientDestination> ClientContext::CreateNewLocalDestination (bool isPublic, i2p::data::SigningKeyType sigType,
const std::map<std::string, std::string> * params)
{
i2p::data::PrivateKeys keys = i2p::data::PrivateKeys::CreateRandomKeys (sigType);
auto localDestination = std::make_shared<ClientDestination> (keys, isPublic, params);
std::unique_lock<std::mutex> l(m_DestinationsMutex);
m_Destinations[localDestination->GetIdentHash ()] = localDestination;
localDestination->Start ();
return localDestination;
}
void ClientContext::DeleteLocalDestination (std::shared_ptr<ClientDestination> destination)
{
if (!destination) return;
auto it = m_Destinations.find (destination->GetIdentHash ());
if (it != m_Destinations.end ())
{
auto d = it->second;
{
std::unique_lock<std::mutex> l(m_DestinationsMutex);
m_Destinations.erase (it);
}
d->Stop ();
}
}
std::shared_ptr<ClientDestination> ClientContext::CreateNewLocalDestination (const i2p::data::PrivateKeys& keys, bool isPublic,
const std::map<std::string, std::string> * params)
{
auto it = m_Destinations.find (keys.GetPublic ()->GetIdentHash ());
if (it != m_Destinations.end ())
{
LogPrint (eLogWarning, "Clients: Local destination ", m_AddressBook.ToAddress(keys.GetPublic ()->GetIdentHash ()), " exists");
if (!it->second->IsRunning ())
{
it->second->Start ();
return it->second;
}
return nullptr;
}
auto localDestination = std::make_shared<ClientDestination> (keys, isPublic, params);
std::unique_lock<std::mutex> l(m_DestinationsMutex);
m_Destinations[keys.GetPublic ()->GetIdentHash ()] = localDestination;
localDestination->Start ();
return localDestination;
}
std::shared_ptr<ClientDestination> ClientContext::FindLocalDestination (const i2p::data::IdentHash& destination) const
{
auto it = m_Destinations.find (destination);
if (it != m_Destinations.end ())
return it->second;
return nullptr;
}
template<typename Section, typename Type>
std::string ClientContext::GetI2CPOption (const Section& section, const std::string& name, const Type& value) const
{
return section.second.get (boost::property_tree::ptree::path_type (name, '/'), std::to_string (value));
}
template<typename Section>
void ClientContext::ReadI2CPOptions (const Section& section, std::map<std::string, std::string>& options) const
{
options[I2CP_PARAM_INBOUND_TUNNEL_LENGTH] = GetI2CPOption (section, I2CP_PARAM_INBOUND_TUNNEL_LENGTH, DEFAULT_INBOUND_TUNNEL_LENGTH);
options[I2CP_PARAM_OUTBOUND_TUNNEL_LENGTH] = GetI2CPOption (section, I2CP_PARAM_OUTBOUND_TUNNEL_LENGTH, DEFAULT_OUTBOUND_TUNNEL_LENGTH);
options[I2CP_PARAM_INBOUND_TUNNELS_QUANTITY] = GetI2CPOption (section, I2CP_PARAM_INBOUND_TUNNELS_QUANTITY, DEFAULT_INBOUND_TUNNELS_QUANTITY);
options[I2CP_PARAM_OUTBOUND_TUNNELS_QUANTITY] = GetI2CPOption (section, I2CP_PARAM_OUTBOUND_TUNNELS_QUANTITY, DEFAULT_OUTBOUND_TUNNELS_QUANTITY);
}
void ClientContext::ReadTunnels ()
{
boost::property_tree::ptree pt;
std::string pathTunnelsConfigFile = i2p::util::filesystem::GetTunnelsConfigFile().string();
try
{
boost::property_tree::read_ini (pathTunnelsConfigFile, pt);
}
catch (std::exception& ex)
{
LogPrint (eLogWarning, "Clients: Can't read ", pathTunnelsConfigFile, ": ", ex.what ());
return;
}
int numClientTunnels = 0, numServerTunnels = 0;
for (auto& section: pt)
{
std::string name = section.first;
try
{
std::string type = section.second.get<std::string> (I2P_TUNNELS_SECTION_TYPE);
if (type == I2P_TUNNELS_SECTION_TYPE_CLIENT)
{
// mandatory params
std::string dest = section.second.get<std::string> (I2P_CLIENT_TUNNEL_DESTINATION);
int port = section.second.get<int> (I2P_CLIENT_TUNNEL_PORT);
// optional params
std::string keys = section.second.get (I2P_CLIENT_TUNNEL_KEYS, "");
std::string address = section.second.get (I2P_CLIENT_TUNNEL_ADDRESS, "127.0.0.1");
int destinationPort = section.second.get (I2P_CLIENT_TUNNEL_DESTINATION_PORT, 0);
i2p::data::SigningKeyType sigType = section.second.get (I2P_CLIENT_TUNNEL_SIGNATURE_TYPE, i2p::data::SIGNING_KEY_TYPE_ECDSA_SHA256_P256);
// I2CP
std::map<std::string, std::string> options;
ReadI2CPOptions (section, options);
std::shared_ptr<ClientDestination> localDestination = nullptr;
if (keys.length () > 0)
{
i2p::data::PrivateKeys k;
LoadPrivateKeys (k, keys, sigType);
localDestination = CreateNewLocalDestination (k, false, &options);
}
auto clientTunnel = new I2PClientTunnel (name, dest, address, port, localDestination, destinationPort);
if (m_ClientTunnels.insert (std::make_pair (port, std::unique_ptr<I2PClientTunnel>(clientTunnel))).second)
clientTunnel->Start ();
else
LogPrint (eLogError, "Clients: I2P client tunnel with port ", port, " already exists");
numClientTunnels++;
}
else if (type == I2P_TUNNELS_SECTION_TYPE_SERVER || type == I2P_TUNNELS_SECTION_TYPE_HTTP)
{
// mandatory params
std::string host = section.second.get<std::string> (I2P_SERVER_TUNNEL_HOST);
int port = section.second.get<int> (I2P_SERVER_TUNNEL_PORT);
std::string keys = section.second.get<std::string> (I2P_SERVER_TUNNEL_KEYS);
// optional params
int inPort = section.second.get (I2P_SERVER_TUNNEL_INPORT, 0);
std::string accessList = section.second.get (I2P_SERVER_TUNNEL_ACCESS_LIST, "");
i2p::data::SigningKeyType sigType = section.second.get (I2P_SERVER_TUNNEL_SIGNATURE_TYPE, i2p::data::SIGNING_KEY_TYPE_ECDSA_SHA256_P256);
// I2CP
std::map<std::string, std::string> options;
ReadI2CPOptions (section, options);
i2p::data::PrivateKeys k;
LoadPrivateKeys (k, keys, sigType);
auto localDestination = CreateNewLocalDestination (k, true, &options);
I2PServerTunnel * serverTunnel = (type == I2P_TUNNELS_SECTION_TYPE_HTTP) ?
new I2PServerTunnelHTTP (name, host, port, localDestination, inPort) :
new I2PServerTunnel (name, host, port, localDestination, inPort);
if (accessList.length () > 0)
{
std::set<i2p::data::IdentHash> idents;
size_t pos = 0, comma;
do
{
comma = accessList.find (',', pos);
i2p::data::IdentHash ident;
ident.FromBase32 (accessList.substr (pos, comma != std::string::npos ? comma - pos : std::string::npos));
idents.insert (ident);
pos = comma + 1;
}
while (comma != std::string::npos);
serverTunnel->SetAccessList (idents);
}
if (m_ServerTunnels.insert (std::make_pair (localDestination->GetIdentHash (), std::unique_ptr<I2PServerTunnel>(serverTunnel))).second)
serverTunnel->Start ();
else
LogPrint (eLogError, "Clients: I2P server tunnel for destination ", m_AddressBook.ToAddress(localDestination->GetIdentHash ()), " already exists");
numServerTunnels++;
}
else
LogPrint (eLogWarning, "Clients: Unknown section type=", type, " of ", name, " in ", pathTunnelsConfigFile);
}
catch (std::exception& ex)
{
LogPrint (eLogError, "Clients: Can't read tunnel ", name, " params: ", ex.what ());
}
}
LogPrint (eLogInfo, "Clients: ", numClientTunnels, " I2P client tunnels created");
LogPrint (eLogInfo, "Clients: ", numServerTunnels, " I2P server tunnels created");
}
}
}