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[gzip] do not initialize deflator if gzip is not enabled for tunnel

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Signed-off-by: R4SAS <r4sas@i2pmail.org>
This commit is contained in:
R4SAS 2021-09-14 14:48:21 +03:00
parent e5c773a3eb
commit d2faec70be
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GPG Key ID: 66F6C87B98EBCFE2
5 changed files with 60 additions and 46 deletions
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14
libi2pd/Datagram.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2020, The PurpleI2P Project
* Copyright (c) 2013-2021, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -21,6 +21,9 @@ namespace datagram
DatagramDestination::DatagramDestination (std::shared_ptr<i2p::client::ClientDestination> owner, bool gzip):
m_Owner (owner), m_Receiver (nullptr), m_RawReceiver (nullptr), m_Gzip (gzip)
{
if (m_Gzip)
m_Deflator.reset (new i2p::data::GzipDeflator);
auto identityLen = m_Owner->GetIdentity ()->GetFullLen ();
m_From.resize (identityLen);
m_Owner->GetIdentity ()->ToBuffer (m_From.data (), identityLen);
@ -152,11 +155,16 @@ namespace datagram
const std::vector<std::pair<const uint8_t *, size_t> >& payloads,
uint16_t fromPort, uint16_t toPort, bool isRaw, bool checksum)
{
size_t size;
auto msg = m_I2NPMsgsPool.AcquireShared ();
uint8_t * buf = msg->GetPayload ();
buf += 4; // reserve for length
size_t size = m_Gzip ? m_Deflator.Deflate (payloads, buf, msg->maxLen - msg->len) :
i2p::data::GzipNoCompression (payloads, buf, msg->maxLen - msg->len);
if (m_Gzip && m_Deflator)
size = m_Deflator->Deflate (payloads, buf, msg->maxLen - msg->len);
else
size = i2p::data::GzipNoCompression (payloads, buf, msg->maxLen - msg->len);
if (size)
{
htobe32buf (msg->GetPayload (), size); // length

4
libi2pd/Datagram.h
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2020, The PurpleI2P Project
* Copyright (c) 2013-2021, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -164,7 +164,7 @@ namespace datagram
std::map<uint16_t, Receiver> m_ReceiversByPorts;
i2p::data::GzipInflator m_Inflator;
i2p::data::GzipDeflator m_Deflator;
std::unique_ptr<i2p::data::GzipDeflator> m_Deflator;
std::vector<uint8_t> m_From, m_Signature;
i2p::util::MemoryPool<I2NPMessageBuffer<I2NP_MAX_MESSAGE_SIZE> > m_I2NPMsgsPool;
};

72
libi2pd/I2NPProtocol.cpp
View File

@ -40,7 +40,7 @@ namespace i2p
{
I2NPMessage * msg = nullptr;
if (endpoint)
{
{
// should fit two tunnel message + tunnel gateway header, enough for one garlic encrypted streaming packet
msg = new I2NPMessageBuffer<2*i2p::tunnel::TUNNEL_DATA_MSG_SIZE + I2NP_HEADER_SIZE + TUNNEL_GATEWAY_HEADER_SIZE + 28>(); // reserved for alignment and NTCP 16 + 6 + 6
msg->Align (6);
@ -50,7 +50,7 @@ namespace i2p
{
msg = new I2NPMessageBuffer<i2p::tunnel::TUNNEL_DATA_MSG_SIZE + I2NP_HEADER_SIZE + 34>(); // reserved for alignment and NTCP 16 + 6 + 12
msg->Align (12);
}
}
return std::shared_ptr<I2NPMessage>(msg);
}
@ -222,12 +222,12 @@ namespace i2p
{
memcpy (buf + 33, replyTag, 8); // 8 bytes tag
buf += 41;
}
else
{
}
else
{
memcpy (buf + 33, replyTag, 32); // 32 bytes tag
buf += 65;
}
}
m->len += (buf - m->GetPayload ());
m->FillI2NPMessageHeader (eI2NPDatabaseLookup);
@ -267,7 +267,7 @@ namespace i2p
LogPrint (eLogError, "I2NP: Invalid RouterInfo buffer for DatabaseStore");
return nullptr;
}
auto m = NewI2NPShortMessage ();
uint8_t * payload = m->GetPayload ();
@ -285,12 +285,12 @@ namespace i2p
buf += 32; // reply tunnel gateway
}
else
{
{
memset (buf, 0, 4); // zero tunnelID means direct reply
buf += 4;
memcpy (buf, context.GetIdentHash (), 32);
buf += 32;
}
}
}
uint8_t * sizePtr = buf;
@ -303,7 +303,7 @@ namespace i2p
{
i2p::data::GzipDeflator deflator;
size = deflator.Deflate (router->GetBuffer (), router->GetBufferLen (), buf, m->maxLen -m->len);
}
}
if (size)
{
htobe16buf (sizePtr, size); // size
@ -427,14 +427,14 @@ namespace i2p
{
LogPrint (eLogWarning, "I2NP: Reply AEAD encryption failed");
return false;
}
}
}
else
{
{
encryption.SetKey (clearText + ECIES_BUILD_REQUEST_RECORD_REPLY_KEY_OFFSET);
encryption.SetIV (clearText + ECIES_BUILD_REQUEST_RECORD_REPLY_IV_OFFSET);
encryption.SetIV (clearText + ECIES_BUILD_REQUEST_RECORD_REPLY_IV_OFFSET);
encryption.Encrypt(reply, TUNNEL_BUILD_RECORD_SIZE, reply);
}
}
}
return true;
}
@ -561,7 +561,7 @@ namespace i2p
LogPrint (eLogDebug, "I2NP: Short request record ", i, " is ours");
uint8_t clearText[SHORT_REQUEST_RECORD_CLEAR_TEXT_SIZE];
if (!i2p::context.DecryptTunnelShortRequestRecord (record + SHORT_REQUEST_RECORD_ENCRYPTED_OFFSET, clearText))
{
{
LogPrint (eLogWarning, "I2NP: Can't decrypt short request record ", i);
return;
}
@ -569,7 +569,7 @@ namespace i2p
{
LogPrint (eLogWarning, "I2NP: Unknown layer encryption type ", clearText[SHORT_REQUEST_RECORD_LAYER_ENCRYPTION_TYPE], " in short request record");
return;
}
}
auto& noiseState = i2p::context.GetCurrentNoiseState ();
uint8_t replyKey[32], layerKey[32], ivKey[32];
i2p::crypto::HKDF (noiseState.m_CK, nullptr, 0, "SMTunnelReplyKey", noiseState.m_CK);
@ -581,7 +581,7 @@ namespace i2p
{
i2p::crypto::HKDF (noiseState.m_CK, nullptr, 0, "TunnelLayerIVKey", noiseState.m_CK);
memcpy (ivKey, noiseState.m_CK + 32, 32);
}
}
else
memcpy (ivKey, noiseState.m_CK , 32);
@ -593,7 +593,7 @@ namespace i2p
i2p::transport::transports.IsTransitBandwidthExceeded ())
retCode = 30;
if (!retCode)
{
{
// create new transit tunnel
auto transitTunnel = i2p::tunnel::CreateTransitTunnel (
bufbe32toh (clearText + SHORT_REQUEST_RECORD_RECEIVE_TUNNEL_OFFSET),
@ -604,13 +604,13 @@ namespace i2p
clearText[SHORT_REQUEST_RECORD_FLAG_OFFSET] & TUNNEL_BUILD_RECORD_ENDPOINT_FLAG);
i2p::tunnel::tunnels.AddTransitTunnel (transitTunnel);
}
// encrypt reply
uint8_t nonce[12];
memset (nonce, 0, 12);
uint8_t * reply = buf + 1;
for (int j = 0; j < num; j++)
{
{
nonce[4] = j; // nonce is record #
if (j == i)
{
@ -621,29 +621,29 @@ namespace i2p
{
LogPrint (eLogWarning, "I2NP: Short reply AEAD encryption failed");
return;
}
}
}
else
i2p::crypto::ChaCha20 (reply, SHORT_TUNNEL_BUILD_RECORD_SIZE, replyKey, nonce, reply);
reply += SHORT_TUNNEL_BUILD_RECORD_SIZE;
reply += SHORT_TUNNEL_BUILD_RECORD_SIZE;
}
// send reply
if (isEndpoint)
{
{
auto replyMsg = NewI2NPShortMessage ();
replyMsg->Concat (buf, len);
replyMsg->FillI2NPMessageHeader (eI2NPShortTunnelBuildReply, bufbe32toh (clearText + SHORT_REQUEST_RECORD_SEND_MSG_ID_OFFSET));
if (memcmp ((const uint8_t *)i2p::context.GetIdentHash (),
clearText + SHORT_REQUEST_RECORD_NEXT_IDENT_OFFSET, 32)) // reply IBGW is not local?
{
i2p::crypto::HKDF (noiseState.m_CK, nullptr, 0, "RGarlicKeyAndTag", noiseState.m_CK);
i2p::crypto::HKDF (noiseState.m_CK, nullptr, 0, "RGarlicKeyAndTag", noiseState.m_CK);
uint64_t tag;
memcpy (&tag, noiseState.m_CK, 8);
// we send it to reply tunnel
transports.SendMessage (clearText + SHORT_REQUEST_RECORD_NEXT_IDENT_OFFSET,
CreateTunnelGatewayMsg (bufbe32toh (clearText + SHORT_REQUEST_RECORD_NEXT_TUNNEL_OFFSET),
i2p::garlic::WrapECIESX25519Message (replyMsg, noiseState.m_CK + 32, tag)));
}
}
else
{
// IBGW is local
@ -653,18 +653,18 @@ namespace i2p
tunnel->SendTunnelDataMsg (replyMsg);
else
LogPrint (eLogWarning, "I2NP: Tunnel ", tunnelID, " not found for short tunnel build reply");
}
}
else
}
}
else
transports.SendMessage (clearText + SHORT_REQUEST_RECORD_NEXT_IDENT_OFFSET,
CreateI2NPMessage (eI2NPShortTunnelBuild, buf, len,
bufbe32toh (clearText + SHORT_REQUEST_RECORD_SEND_MSG_ID_OFFSET)));
return;
}
}
record += SHORT_TUNNEL_BUILD_RECORD_SIZE;
}
}
}
}
std::shared_ptr<I2NPMessage> CreateTunnelDataMsg (const uint8_t * buf)
{
auto msg = NewI2NPTunnelMessage (false);
@ -781,13 +781,13 @@ namespace i2p
break;
case eI2NPShortTunnelBuild:
HandleShortTunnelBuildMsg (msgID, buf, size);
break;
break;
case eI2NPVariableTunnelBuildReply:
HandleTunnelBuildReplyMsg (msgID, buf, size, false);
break;
case eI2NPShortTunnelBuildReply:
HandleTunnelBuildReplyMsg (msgID, buf, size, true);
break;
break;
case eI2NPTunnelBuild:
HandleTunnelBuildMsg (buf, size);
break;
@ -844,8 +844,8 @@ namespace i2p
case eI2NPVariableTunnelBuildReply:
case eI2NPTunnelBuild:
case eI2NPTunnelBuildReply:
case eI2NPShortTunnelBuild:
case eI2NPShortTunnelBuildReply:
case eI2NPShortTunnelBuild:
case eI2NPShortTunnelBuildReply:
// forward to tunnel thread
i2p::tunnel::tunnels.PostTunnelData (msg);
break;

14
libi2pd/Streaming.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2020, The PurpleI2P Project
* Copyright (c) 2013-2021, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -1040,6 +1040,8 @@ namespace stream
m_Owner (owner), m_LocalPort (localPort), m_Gzip (gzip),
m_PendingIncomingTimer (m_Owner->GetService ())
{
if (m_Gzip)
m_Deflator.reset (new i2p::data::GzipDeflator);
}
StreamingDestination::~StreamingDestination ()
@ -1296,13 +1298,17 @@ namespace stream
std::shared_ptr<I2NPMessage> StreamingDestination::CreateDataMessage (
const uint8_t * payload, size_t len, uint16_t toPort, bool checksum)
{
size_t size;
auto msg = m_I2NPMsgsPool.AcquireShared ();
uint8_t * buf = msg->GetPayload ();
buf += 4; // reserve for lengthlength
msg->len += 4;
size_t size = (!m_Gzip || len <= i2p::stream::COMPRESSION_THRESHOLD_SIZE)?
i2p::data::GzipNoCompression (payload, len, buf, msg->maxLen - msg->len):
m_Deflator.Deflate (payload, len, buf, msg->maxLen - msg->len);
if (m_Gzip && m_Deflator)
size = m_Deflator->Deflate (payload, len, buf, msg->maxLen - msg->len);
else
size = i2p::data::GzipNoCompression (payload, len, buf, msg->maxLen - msg->len);
if (size)
{
htobe32buf (msg->GetPayload (), size); // length

2
libi2pd/Streaming.h
View File

@ -312,7 +312,7 @@ namespace stream
public:
i2p::data::GzipInflator m_Inflator;
i2p::data::GzipDeflator m_Deflator;
std::unique_ptr<i2p::data::GzipDeflator> m_Deflator;
// for HTTP only
const decltype(m_Streams)& GetStreams () const { return m_Streams; };