mirror of https://github.com/PurpleI2P/i2pd
split Streaming to stream and destination
orignal
10 years ago
parent
6da55d10ab
commit
482fc0e8b1
@ -0,0 +1,414 @@
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#include <fstream>
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#include <algorithm>
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#include <cryptopp/dh.h>
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#include <cryptopp/gzip.h>
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#include "Log.h"
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#include "util.h"
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#include "Destination.h"
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namespace i2p
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{
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namespace stream
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{
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StreamingDestination::StreamingDestination (boost::asio::io_service& service, bool isPublic):
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m_Service (service), m_LeaseSet (nullptr), m_IsPublic (isPublic)
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{
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m_Keys = i2p::data::PrivateKeys::CreateRandomKeys (/*i2p::data::SIGNING_KEY_TYPE_ECDSA_SHA256_P256*/); // uncomment for ECDSA
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CryptoPP::DH dh (i2p::crypto::elgp, i2p::crypto::elgg);
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dh.GenerateKeyPair(i2p::context.GetRandomNumberGenerator (), m_EncryptionPrivateKey, m_EncryptionPublicKey);
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m_Pool = i2p::tunnel::tunnels.CreateTunnelPool (*this, 3); // 3-hops tunnel
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if (m_IsPublic)
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LogPrint ("Local address ", GetIdentHash ().ToBase32 (), ".b32.i2p created");
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}
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StreamingDestination::StreamingDestination (boost::asio::io_service& service, const std::string& fullPath, bool isPublic):
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m_Service (service), m_LeaseSet (nullptr), m_IsPublic (isPublic)
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{
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std::ifstream s(fullPath.c_str (), std::ifstream::binary);
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if (s.is_open ())
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{
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s.seekg (0, std::ios::end);
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size_t len = s.tellg();
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s.seekg (0, std::ios::beg);
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uint8_t * buf = new uint8_t[len];
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s.read ((char *)buf, len);
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m_Keys.FromBuffer (buf, len);
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delete[] buf;
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LogPrint ("Local address ", GetIdentHash ().ToBase32 (), ".b32.i2p loaded");
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}
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else
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{
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LogPrint ("Can't open file ", fullPath, " Creating new one");
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m_Keys = i2p::data::PrivateKeys::CreateRandomKeys (/*i2p::data::SIGNING_KEY_TYPE_ECDSA_SHA256_P256*/);
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std::ofstream f (fullPath, std::ofstream::binary | std::ofstream::out);
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size_t len = m_Keys.GetFullLen ();
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uint8_t * buf = new uint8_t[len];
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len = m_Keys.ToBuffer (buf, len);
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f.write ((char *)buf, len);
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delete[] buf;
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LogPrint ("New private keys file ", fullPath, " for ", m_Keys.GetPublic ().GetIdentHash ().ToBase32 (), ".b32.i2p created");
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}
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CryptoPP::DH dh (i2p::crypto::elgp, i2p::crypto::elgg);
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dh.GenerateKeyPair(i2p::context.GetRandomNumberGenerator (), m_EncryptionPrivateKey, m_EncryptionPublicKey);
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m_Pool = i2p::tunnel::tunnels.CreateTunnelPool (*this, 3); // 3-hops tunnel
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}
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StreamingDestination::StreamingDestination (boost::asio::io_service& service, const i2p::data::PrivateKeys& keys, bool isPublic):
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m_Service (service), m_Keys (keys), m_LeaseSet (nullptr), m_IsPublic (isPublic)
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{
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CryptoPP::DH dh (i2p::crypto::elgp, i2p::crypto::elgg);
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dh.GenerateKeyPair(i2p::context.GetRandomNumberGenerator (), m_EncryptionPrivateKey, m_EncryptionPublicKey);
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m_Pool = i2p::tunnel::tunnels.CreateTunnelPool (*this, 3); // 3-hops tunnel
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if (m_IsPublic)
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LogPrint ("Local address ", GetIdentHash ().ToBase32 (), ".b32.i2p created");
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}
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StreamingDestination::~StreamingDestination ()
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{
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{
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std::unique_lock<std::mutex> l(m_StreamsMutex);
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for (auto it: m_Streams)
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delete it.second;
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m_Streams.clear ();
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}
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if (m_Pool)
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i2p::tunnel::tunnels.DeleteTunnelPool (m_Pool);
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delete m_LeaseSet;
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}
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void StreamingDestination::HandleNextPacket (Packet * packet)
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{
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uint32_t sendStreamID = packet->GetSendStreamID ();
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if (sendStreamID)
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{
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auto it = m_Streams.find (sendStreamID);
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if (it != m_Streams.end ())
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it->second->HandleNextPacket (packet);
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else
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{
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LogPrint ("Unknown stream ", sendStreamID);
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delete packet;
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}
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}
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else // new incoming stream
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{
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auto incomingStream = CreateNewIncomingStream ();
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incomingStream->HandleNextPacket (packet);
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if (m_Acceptor != nullptr)
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m_Acceptor (incomingStream);
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else
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{
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LogPrint ("Acceptor for incoming stream is not set");
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DeleteStream (incomingStream);
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}
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}
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}
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Stream * StreamingDestination::CreateNewOutgoingStream (const i2p::data::LeaseSet& remote)
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{
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Stream * s = new Stream (m_Service, this, remote);
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std::unique_lock<std::mutex> l(m_StreamsMutex);
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m_Streams[s->GetRecvStreamID ()] = s;
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return s;
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}
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Stream * StreamingDestination::CreateNewIncomingStream ()
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{
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Stream * s = new Stream (m_Service, this);
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std::unique_lock<std::mutex> l(m_StreamsMutex);
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m_Streams[s->GetRecvStreamID ()] = s;
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return s;
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}
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void StreamingDestination::DeleteStream (Stream * stream)
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{
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if (stream)
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{
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std::unique_lock<std::mutex> l(m_StreamsMutex);
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auto it = m_Streams.find (stream->GetRecvStreamID ());
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if (it != m_Streams.end ())
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{
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m_Streams.erase (it);
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delete stream;
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}
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}
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}
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const i2p::data::LeaseSet * StreamingDestination::GetLeaseSet ()
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{
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if (!m_Pool) return nullptr;
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if (!m_LeaseSet)
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UpdateLeaseSet ();
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return m_LeaseSet;
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}
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void StreamingDestination::UpdateLeaseSet ()
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{
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auto newLeaseSet = new i2p::data::LeaseSet (*m_Pool);
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if (!m_LeaseSet)
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m_LeaseSet = newLeaseSet;
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else
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{
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// TODO: implement it better
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*m_LeaseSet = *newLeaseSet;
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delete newLeaseSet;
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}
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}
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void StreamingDestination::SetLeaseSetUpdated ()
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{
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UpdateLeaseSet ();
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for (auto it: m_Streams)
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it.second->SetLeaseSetUpdated ();
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if (m_IsPublic)
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i2p::data::netdb.PublishLeaseSet (m_LeaseSet, m_Pool);
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}
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StreamingDestinations destinations;
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void StreamingDestinations::Start ()
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{
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if (!m_SharedLocalDestination)
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{
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m_SharedLocalDestination = new StreamingDestination (m_Service, false); // non-public
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m_Destinations[m_SharedLocalDestination->GetIdentity ().GetIdentHash ()] = m_SharedLocalDestination;
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}
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// LoadLocalDestinations ();
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m_IsRunning = true;
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m_Thread = new std::thread (std::bind (&StreamingDestinations::Run, this));
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}
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void StreamingDestinations::Stop ()
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{
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for (auto it: m_Destinations)
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delete it.second;
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m_Destinations.clear ();
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m_SharedLocalDestination = 0; // deleted through m_Destination
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m_IsRunning = false;
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m_Service.stop ();
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if (m_Thread)
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{
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m_Thread->join ();
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delete m_Thread;
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m_Thread = 0;
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}
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}
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void StreamingDestinations::Run ()
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{
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m_Service.run ();
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}
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void StreamingDestinations::LoadLocalDestinations ()
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{
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int numDestinations = 0;
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boost::filesystem::path p (i2p::util::filesystem::GetDataDir());
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boost::filesystem::directory_iterator end;
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for (boost::filesystem::directory_iterator it (p); it != end; ++it)
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{
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if (boost::filesystem::is_regular_file (*it) && it->path ().extension () == ".dat")
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{
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auto fullPath =
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#if BOOST_VERSION > 10500
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it->path().string();
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#else
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it->path();
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#endif
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auto localDestination = new StreamingDestination (m_Service, fullPath, true);
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m_Destinations[localDestination->GetIdentHash ()] = localDestination;
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numDestinations++;
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}
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}
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if (numDestinations > 0)
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LogPrint (numDestinations, " local destinations loaded");
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}
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StreamingDestination * StreamingDestinations::LoadLocalDestination (const std::string& filename, bool isPublic)
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{
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auto localDestination = new StreamingDestination (m_Service, i2p::util::filesystem::GetFullPath (filename), isPublic);
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std::unique_lock<std::mutex> l(m_DestinationsMutex);
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m_Destinations[localDestination->GetIdentHash ()] = localDestination;
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return localDestination;
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}
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StreamingDestination * StreamingDestinations::CreateNewLocalDestination (bool isPublic)
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{
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auto localDestination = new StreamingDestination (m_Service, isPublic);
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std::unique_lock<std::mutex> l(m_DestinationsMutex);
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m_Destinations[localDestination->GetIdentHash ()] = localDestination;
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return localDestination;
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}
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void StreamingDestinations::DeleteLocalDestination (StreamingDestination * destination)
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{
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if (!destination) return;
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auto it = m_Destinations.find (destination->GetIdentHash ());
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if (it != m_Destinations.end ())
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{
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auto d = it->second;
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{
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std::unique_lock<std::mutex> l(m_DestinationsMutex);
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m_Destinations.erase (it);
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}
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delete d;
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}
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}
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StreamingDestination * StreamingDestinations::CreateNewLocalDestination (const i2p::data::PrivateKeys& keys, bool isPublic)
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{
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auto it = m_Destinations.find (keys.GetPublic ().GetIdentHash ());
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if (it != m_Destinations.end ())
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{
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LogPrint ("Local destination ", keys.GetPublic ().GetIdentHash ().ToBase32 (), ".b32.i2p exists");
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return nullptr;
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}
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auto localDestination = new StreamingDestination (m_Service, keys, isPublic);
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std::unique_lock<std::mutex> l(m_DestinationsMutex);
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m_Destinations[keys.GetPublic ().GetIdentHash ()] = localDestination;
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return localDestination;
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}
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Stream * StreamingDestinations::CreateClientStream (const i2p::data::LeaseSet& remote)
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{
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if (!m_SharedLocalDestination) return nullptr;
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return m_SharedLocalDestination->CreateNewOutgoingStream (remote);
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}
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void StreamingDestinations::DeleteStream (Stream * stream)
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{
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if (stream)
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stream->GetLocalDestination ()->DeleteStream (stream);
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}
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void StreamingDestinations::HandleNextPacket (i2p::data::IdentHash destination, Packet * packet)
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{
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m_Service.post (boost::bind (&StreamingDestinations::PostNextPacket, this, destination, packet));
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}
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void StreamingDestinations::PostNextPacket (i2p::data::IdentHash destination, Packet * packet)
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{
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auto it = m_Destinations.find (destination);
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if (it != m_Destinations.end ())
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it->second->HandleNextPacket (packet);
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else
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{
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LogPrint ("Local destination ", destination.ToBase64 (), " not found");
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delete packet;
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}
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}
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StreamingDestination * StreamingDestinations::FindLocalDestination (const i2p::data::IdentHash& destination) const
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{
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auto it = m_Destinations.find (destination);
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if (it != m_Destinations.end ())
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return it->second;
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return nullptr;
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}
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Stream * CreateStream (const i2p::data::LeaseSet& remote)
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{
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return destinations.CreateClientStream (remote);
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}
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void DeleteStream (Stream * stream)
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{
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destinations.DeleteStream (stream);
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}
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void StartStreaming ()
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{
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destinations.Start ();
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}
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void StopStreaming ()
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{
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destinations.Stop ();
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}
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StreamingDestination * GetSharedLocalDestination ()
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{
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return destinations.GetSharedLocalDestination ();
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}
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StreamingDestination * CreateNewLocalDestination (bool isPublic)
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{
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return destinations.CreateNewLocalDestination (isPublic);
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}
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StreamingDestination * CreateNewLocalDestination (const i2p::data::PrivateKeys& keys, bool isPublic)
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{
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return destinations.CreateNewLocalDestination (keys, isPublic);
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}
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void DeleteLocalDestination (StreamingDestination * destination)
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{
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destinations.DeleteLocalDestination (destination);
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}
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StreamingDestination * FindLocalDestination (const i2p::data::IdentHash& destination)
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{
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return destinations.FindLocalDestination (destination);
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}
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StreamingDestination * LoadLocalDestination (const std::string& filename, bool isPublic)
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{
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return destinations.LoadLocalDestination (filename, isPublic);
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}
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const StreamingDestinations& GetLocalDestinations ()
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{
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return destinations;
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}
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void HandleDataMessage (i2p::data::IdentHash destination, const uint8_t * buf, size_t len)
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{
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uint32_t length = be32toh (*(uint32_t *)buf);
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buf += 4;
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// we assume I2CP payload
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if (buf[9] == 6) // streaming protocol
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{
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// unzip it
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CryptoPP::Gunzip decompressor;
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decompressor.Put (buf, length);
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decompressor.MessageEnd();
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Packet * uncompressed = new Packet;
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uncompressed->offset = 0;
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uncompressed->len = decompressor.MaxRetrievable ();
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if (uncompressed->len > MAX_PACKET_SIZE)
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{
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LogPrint ("Received packet size ", uncompressed->len, " exceeds max packet size");
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uncompressed->len = MAX_PACKET_SIZE;
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}
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decompressor.Get (uncompressed->buf, uncompressed->len);
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// then forward to streaming engine thread
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destinations.HandleNextPacket (destination, uncompressed);
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}
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else
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LogPrint ("Data: protocol ", buf[9], " is not supported");
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}
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I2NPMessage * CreateDataMessage (Stream * s, const uint8_t * payload, size_t len)
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{
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I2NPMessage * msg = NewI2NPShortMessage ();
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CryptoPP::Gzip compressor; // DEFAULT_DEFLATE_LEVEL
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if (len <= COMPRESSION_THRESHOLD_SIZE)
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compressor.SetDeflateLevel (CryptoPP::Gzip::MIN_DEFLATE_LEVEL);
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compressor.Put (payload, len);
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compressor.MessageEnd();
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int size = compressor.MaxRetrievable ();
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uint8_t * buf = msg->GetPayload ();
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*(uint32_t *)buf = htobe32 (size); // length
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buf += 4;
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compressor.Get (buf, size);
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memset (buf + 4, 0, 4); // source and destination ports. TODO: fill with proper values later
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buf[9] = 6; // streaming protocol
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msg->len += size + 4;
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FillI2NPMessageHeader (msg, eI2NPData);
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return msg;
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}
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}
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}
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@ -0,0 +1,125 @@
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#ifndef DESTINATION_H__
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#define DESTINATION_H__
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#include <thread>
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#include <mutex>
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#include "Identity.h"
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#include "TunnelPool.h"
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#include "CryptoConst.h"
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#include "NetDb.h"
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#include "Streaming.h"
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namespace i2p
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{
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namespace stream
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{
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class StreamingDestination: public i2p::data::LocalDestination
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{
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public:
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StreamingDestination (boost::asio::io_service& service, bool isPublic);
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StreamingDestination (boost::asio::io_service& service, const std::string& fullPath, bool isPublic);
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StreamingDestination (boost::asio::io_service& service, const i2p::data::PrivateKeys& keys, bool isPublic);
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~StreamingDestination ();
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const i2p::data::LeaseSet * GetLeaseSet ();
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i2p::tunnel::TunnelPool * GetTunnelPool () const { return m_Pool; };
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Stream * CreateNewOutgoingStream (const i2p::data::LeaseSet& remote);
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void DeleteStream (Stream * stream);
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void SetAcceptor (const std::function<void (Stream *)>& acceptor) { m_Acceptor = acceptor; };
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void ResetAcceptor () { m_Acceptor = nullptr; };
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bool IsAcceptorSet () const { return m_Acceptor != nullptr; };
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void HandleNextPacket (Packet * packet);
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// implements LocalDestination
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const i2p::data::PrivateKeys& GetPrivateKeys () const { return m_Keys; };
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const uint8_t * GetEncryptionPrivateKey () const { return m_EncryptionPrivateKey; };
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const uint8_t * GetEncryptionPublicKey () const { return m_EncryptionPublicKey; };
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void SetLeaseSetUpdated ();
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private:
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Stream * CreateNewIncomingStream ();
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void UpdateLeaseSet ();
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private:
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boost::asio::io_service& m_Service;
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std::mutex m_StreamsMutex;
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std::map<uint32_t, Stream *> m_Streams;
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i2p::data::PrivateKeys m_Keys;
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uint8_t m_EncryptionPublicKey[256], m_EncryptionPrivateKey[256];
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i2p::tunnel::TunnelPool * m_Pool;
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i2p::data::LeaseSet * m_LeaseSet;
|
||||
bool m_IsPublic;
|
||||
|
||||
std::function<void (Stream *)> m_Acceptor;
|
||||
};
|
||||
|
||||
class StreamingDestinations
|
||||
{
|
||||
public:
|
||||
|
||||
StreamingDestinations (): m_IsRunning (false), m_Thread (nullptr),
|
||||
m_Work (m_Service), m_SharedLocalDestination (nullptr) {};
|
||||
~StreamingDestinations () {};
|
||||
|
||||
void Start ();
|
||||
void Stop ();
|
||||
|
||||
void HandleNextPacket (i2p::data::IdentHash destination, Packet * packet);
|
||||
|
||||
Stream * CreateClientStream (const i2p::data::LeaseSet& remote);
|
||||
void DeleteStream (Stream * stream);
|
||||
StreamingDestination * GetSharedLocalDestination () const { return m_SharedLocalDestination; };
|
||||
StreamingDestination * CreateNewLocalDestination (bool isPublic);
|
||||
StreamingDestination * CreateNewLocalDestination (const i2p::data::PrivateKeys& keys, bool isPublic);
|
||||
void DeleteLocalDestination (StreamingDestination * destination);
|
||||
StreamingDestination * FindLocalDestination (const i2p::data::IdentHash& destination) const;
|
||||
StreamingDestination * LoadLocalDestination (const std::string& filename, bool isPublic);
|
||||
|
||||
private:
|
||||
|
||||
void Run ();
|
||||
void LoadLocalDestinations ();
|
||||
void PostNextPacket (i2p::data::IdentHash destination, Packet * packet);
|
||||
|
||||
private:
|
||||
|
||||
bool m_IsRunning;
|
||||
std::thread * m_Thread;
|
||||
boost::asio::io_service m_Service;
|
||||
boost::asio::io_service::work m_Work;
|
||||
|
||||
std::mutex m_DestinationsMutex;
|
||||
std::map<i2p::data::IdentHash, StreamingDestination *> m_Destinations;
|
||||
StreamingDestination * m_SharedLocalDestination;
|
||||
|
||||
public:
|
||||
// for HTTP
|
||||
const decltype(m_Destinations)& GetDestinations () const { return m_Destinations; };
|
||||
};
|
||||
|
||||
|
||||
Stream * CreateStream (const i2p::data::LeaseSet& remote);
|
||||
void DeleteStream (Stream * stream);
|
||||
void StartStreaming ();
|
||||
void StopStreaming ();
|
||||
StreamingDestination * GetSharedLocalDestination ();
|
||||
StreamingDestination * CreateNewLocalDestination (bool isPublic = true);
|
||||
StreamingDestination * CreateNewLocalDestination (const i2p::data::PrivateKeys& keys, bool isPublic = true);
|
||||
void DeleteLocalDestination (StreamingDestination * destination);
|
||||
StreamingDestination * FindLocalDestination (const i2p::data::IdentHash& destination);
|
||||
StreamingDestination * LoadLocalDestination (const std::string& filename, bool isPublic);
|
||||
// for HTTP
|
||||
const StreamingDestinations& GetLocalDestinations ();
|
||||
|
||||
// assuming data is I2CP message
|
||||
void HandleDataMessage (i2p::data::IdentHash destination, const uint8_t * buf, size_t len);
|
||||
I2NPMessage * CreateDataMessage (Stream * s, const uint8_t * payload, size_t len);
|
||||
}
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue