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ClientContext.cpp
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ClientContext.cpp
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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), m_I2PControlService (nullptr)
{
}
ClientContext::~ClientContext ()
{
delete m_HttpProxy;
delete m_SocksProxy;
delete m_SamBridge;
delete m_BOBCommandChannel;
delete m_I2PControlService;
}
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)
localDestination = LoadLocalDestination (proxyKeys, false);
m_HttpProxy = new i2p::proxy::HTTPProxy(i2p::util::config::GetArg("-httpproxyport", 4446), localDestination);
m_HttpProxy->Start();
LogPrint("HTTP Proxy started");
m_SocksProxy = new i2p::proxy::SOCKSProxy(i2p::util::config::GetArg("-socksproxyport", 4447), localDestination);
m_SocksProxy->Start();
LogPrint("SOCKS Proxy Started");
// I2P tunnels
std::string ircDestination = i2p::util::config::GetArg("-ircdest", "");
if (ircDestination.length () > 0) // ircdest is presented
{
localDestination = nullptr;
std::string ircKeys = i2p::util::config::GetArg("-irckeys", "");
if (ircKeys.length () > 0)
localDestination = LoadLocalDestination (ircKeys, false);
auto ircPort = i2p::util::config::GetArg("-ircport", 6668);
auto ircTunnel = new I2PClientTunnel (ircDestination, ircPort, localDestination);
ircTunnel->Start ();
m_ClientTunnels.insert (std::make_pair(ircPort, std::unique_ptr<I2PClientTunnel>(ircTunnel)));
LogPrint("IRC tunnel started");
}
std::string eepKeys = i2p::util::config::GetArg("-eepkeys", "");
if (eepKeys.length () > 0) // eepkeys file is presented
{
localDestination = LoadLocalDestination (eepKeys, true);
auto serverTunnel = new I2PServerTunnel (i2p::util::config::GetArg("-eephost", "127.0.0.1"),
i2p::util::config::GetArg("-eepport", 80), localDestination);
serverTunnel->Start ();
m_ServerTunnels.insert (std::make_pair(localDestination->GetIdentHash (), std::unique_ptr<I2PServerTunnel>(serverTunnel)));
LogPrint("Server tunnel started");
}
ReadTunnels ();
// SAM
int samPort = i2p::util::config::GetArg("-samport", 0);
if (samPort)
{
m_SamBridge = new SAMBridge (samPort);
m_SamBridge->Start ();
LogPrint("SAM bridge started");
}
// BOB
int bobPort = i2p::util::config::GetArg("-bobport", 0);
if (bobPort)
{
m_BOBCommandChannel = new BOBCommandChannel (bobPort);
m_BOBCommandChannel->Start ();
LogPrint("BOB command channel started");
}
// I2P Control
int i2pcontrolPort = i2p::util::config::GetArg("-i2pcontrolport", 0);
if (i2pcontrolPort)
{
m_I2PControlService = new I2PControlService (i2pcontrolPort);
m_I2PControlService->Start ();
LogPrint("I2PControl started");
}
m_AddressBook.Start ();
}
void ClientContext::Stop ()
{
m_HttpProxy->Stop();
delete m_HttpProxy;
m_HttpProxy = nullptr;
LogPrint("HTTP Proxy stopped");
m_SocksProxy->Stop();
delete m_SocksProxy;
m_SocksProxy = nullptr;
LogPrint("SOCKS Proxy stopped");
for (auto& it: m_ClientTunnels)
{
it.second->Stop ();
LogPrint("I2P client tunnel on port ", it.first, " stopped");
}
m_ClientTunnels.clear ();
for (auto& it: m_ServerTunnels)
{
it.second->Stop ();
LogPrint("I2P server tunnel stopped");
}
m_ServerTunnels.clear ();
if (m_SamBridge)
{
m_SamBridge->Stop ();
delete m_SamBridge;
m_SamBridge = nullptr;
LogPrint("SAM brdige stopped");
}
if (m_BOBCommandChannel)
{
m_BOBCommandChannel->Stop ();
delete m_BOBCommandChannel;
m_BOBCommandChannel = nullptr;
LogPrint("BOB command channel stopped");
}
if (m_I2PControlService)
{
m_I2PControlService->Stop ();
delete m_I2PControlService;
m_I2PControlService = nullptr;
LogPrint("I2PControl stopped");
}
m_AddressBook.Stop ();
for (auto it: m_Destinations)
it.second->Stop ();
m_Destinations.clear ();
m_SharedLocalDestination = nullptr;
}
std::shared_ptr<ClientDestination> ClientContext::LoadLocalDestination (const std::string& filename, bool isPublic)
{
i2p::data::PrivateKeys keys;
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 ("Local address ", m_AddressBook.ToAddress(keys.GetPublic ().GetIdentHash ()), " loaded");
}
else
{
LogPrint ("Can't open file ", fullPath, " Creating new one");
keys = i2p::data::PrivateKeys::CreateRandomKeys (i2p::data::SIGNING_KEY_TYPE_ECDSA_SHA256_P256);
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 ("New private keys file ", fullPath, " for ", m_AddressBook.ToAddress(keys.GetPublic ().GetIdentHash ()), " created");
}
std::shared_ptr<ClientDestination> localDestination = nullptr;
std::unique_lock<std::mutex> l(m_DestinationsMutex);
auto it = m_Destinations.find (keys.GetPublic ().GetIdentHash ());
if (it != m_Destinations.end ())
{
LogPrint (eLogWarning, "Local destination ", m_AddressBook.ToAddress(keys.GetPublic ().GetIdentHash ()), " alreday exists");
localDestination = it->second;
}
else
{
localDestination = std::make_shared<ClientDestination> (keys, isPublic);
m_Destinations[localDestination->GetIdentHash ()] = localDestination;
localDestination->Start ();
}
return localDestination;
}
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 ("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;
}
void ClientContext::ReadTunnels ()
{
boost::property_tree::ptree pt;
try
{
boost::property_tree::read_ini (i2p::util::filesystem::GetFullPath (TUNNELS_CONFIG_FILENAME), pt);
}
catch (std::exception& ex)
{
LogPrint (eLogWarning, "Can't read ", TUNNELS_CONFIG_FILENAME, ": ", 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, "");
int destinationPort = section.second.get (I2P_CLIENT_TUNNEL_DESTINATION_PORT, 0);
std::shared_ptr<ClientDestination> localDestination = nullptr;
if (keys.length () > 0)
localDestination = LoadLocalDestination (keys, false);
auto clientTunnel = new I2PClientTunnel (dest, port, localDestination, destinationPort);
if (m_ClientTunnels.insert (std::make_pair (port, std::unique_ptr<I2PClientTunnel>(clientTunnel))).second)
clientTunnel->Start ();
else
LogPrint (eLogError, "I2P client tunnel with port ", port, " already exists");
numClientTunnels++;
}
else if (type == I2P_TUNNELS_SECTION_TYPE_SERVER)
{
// 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, "");
auto localDestination = LoadLocalDestination (keys, true);
auto serverTunnel = new I2PServerTunnel (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, "I2P server tunnel for destination ", m_AddressBook.ToAddress(localDestination->GetIdentHash ()), " already exists");
numServerTunnels++;
}
else
LogPrint (eLogWarning, "Unknown section type=", type, " of ", name, " in ", TUNNELS_CONFIG_FILENAME);
}
catch (std::exception& ex)
{
LogPrint (eLogError, "Can't read tunnel ", name, " params: ", ex.what ());
}
}
LogPrint (eLogInfo, numClientTunnels, " I2P client tunnels created");
LogPrint (eLogInfo, numServerTunnels, " I2P server tunnels created");
}
}
}