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.
607 lines
19 KiB
607 lines
19 KiB
#include <string.h> |
|
#include <atomic> |
|
#include "I2PEndian.h" |
|
#include <cryptopp/gzip.h> |
|
#include "ElGamal.h" |
|
#include "Timestamp.h" |
|
#include "RouterContext.h" |
|
#include "NetDb.h" |
|
#include "Tunnel.h" |
|
#include "base64.h" |
|
#include "Transports.h" |
|
#include "Garlic.h" |
|
#include "I2NPProtocol.h" |
|
|
|
using namespace i2p::transport; |
|
|
|
namespace i2p |
|
{ |
|
I2NPMessage * NewI2NPMessage () |
|
{ |
|
return new I2NPMessageBuffer<I2NP_MAX_MESSAGE_SIZE>(); |
|
} |
|
|
|
I2NPMessage * NewI2NPShortMessage () |
|
{ |
|
return new I2NPMessageBuffer<I2NP_MAX_SHORT_MESSAGE_SIZE>(); |
|
} |
|
|
|
I2NPMessage * NewI2NPMessage (size_t len) |
|
{ |
|
return (len < I2NP_MAX_SHORT_MESSAGE_SIZE/2) ? NewI2NPShortMessage () : NewI2NPMessage (); |
|
} |
|
|
|
void DeleteI2NPMessage (I2NPMessage * msg) |
|
{ |
|
delete msg; |
|
} |
|
|
|
static std::atomic<uint32_t> I2NPmsgID(0); // TODO: create class |
|
void FillI2NPMessageHeader (I2NPMessage * msg, I2NPMessageType msgType, uint32_t replyMsgID) |
|
{ |
|
msg->SetTypeID (msgType); |
|
if (replyMsgID) // for tunnel creation |
|
msg->SetMsgID (replyMsgID); |
|
else |
|
{ |
|
msg->SetMsgID (I2NPmsgID); |
|
I2NPmsgID++; |
|
} |
|
msg->SetExpiration (i2p::util::GetMillisecondsSinceEpoch () + 5000); // TODO: 5 secs is a magic number |
|
msg->UpdateSize (); |
|
msg->UpdateChks (); |
|
} |
|
|
|
void RenewI2NPMessageHeader (I2NPMessage * msg) |
|
{ |
|
if (msg) |
|
{ |
|
msg->SetMsgID (I2NPmsgID); |
|
I2NPmsgID++; |
|
msg->SetExpiration (i2p::util::GetMillisecondsSinceEpoch () + 5000); |
|
} |
|
} |
|
|
|
I2NPMessage * CreateI2NPMessage (I2NPMessageType msgType, const uint8_t * buf, int len, uint32_t replyMsgID) |
|
{ |
|
I2NPMessage * msg = NewI2NPMessage (len); |
|
memcpy (msg->GetPayload (), buf, len); |
|
msg->len += len; |
|
FillI2NPMessageHeader (msg, msgType, replyMsgID); |
|
return msg; |
|
} |
|
|
|
I2NPMessage * CreateI2NPMessage (const uint8_t * buf, int len, std::shared_ptr<i2p::tunnel::InboundTunnel> from) |
|
{ |
|
I2NPMessage * msg = NewI2NPMessage (); |
|
memcpy (msg->GetBuffer (), buf, len); |
|
msg->len = msg->offset + len; |
|
msg->from = from; |
|
return msg; |
|
} |
|
|
|
I2NPMessage * CreateDeliveryStatusMsg (uint32_t msgID) |
|
{ |
|
I2NPMessage * m = NewI2NPMessage (); |
|
uint8_t * buf = m->GetPayload (); |
|
if (msgID) |
|
{ |
|
htobe32buf (buf + DELIVERY_STATUS_MSGID_OFFSET, msgID); |
|
htobe64buf (buf + DELIVERY_STATUS_TIMESTAMP_OFFSET, i2p::util::GetMillisecondsSinceEpoch ()); |
|
} |
|
else // for SSU establishment |
|
{ |
|
htobe32buf (buf + DELIVERY_STATUS_MSGID_OFFSET, i2p::context.GetRandomNumberGenerator ().GenerateWord32 ()); |
|
htobe64buf (buf + DELIVERY_STATUS_TIMESTAMP_OFFSET, 2); // netID = 2 |
|
} |
|
m->len += DELIVERY_STATUS_SIZE; |
|
FillI2NPMessageHeader (m, eI2NPDeliveryStatus); |
|
return m; |
|
} |
|
|
|
I2NPMessage * CreateRouterInfoDatabaseLookupMsg (const uint8_t * key, const uint8_t * from, |
|
uint32_t replyTunnelID, bool exploratory, std::set<i2p::data::IdentHash> * excludedPeers) |
|
{ |
|
I2NPMessage * m = NewI2NPMessage (); |
|
uint8_t * buf = m->GetPayload (); |
|
memcpy (buf, key, 32); // key |
|
buf += 32; |
|
memcpy (buf, from, 32); // from |
|
buf += 32; |
|
uint8_t flag = exploratory ? DATABASE_LOOKUP_TYPE_EXPLORATORY_LOOKUP : DATABASE_LOOKUP_TYPE_ROUTERINFO_LOOKUP; |
|
if (replyTunnelID) |
|
{ |
|
*buf = flag | DATABASE_LOOKUP_DELIVERY_FLAG; // set delivery flag |
|
htobe32buf (buf+1, replyTunnelID); |
|
buf += 5; |
|
} |
|
else |
|
{ |
|
*buf = flag; // flag |
|
buf++; |
|
} |
|
|
|
if (excludedPeers) |
|
{ |
|
int cnt = excludedPeers->size (); |
|
htobe16buf (buf, cnt); |
|
buf += 2; |
|
for (auto& it: *excludedPeers) |
|
{ |
|
memcpy (buf, it, 32); |
|
buf += 32; |
|
} |
|
} |
|
else |
|
{ |
|
// nothing to exclude |
|
htobuf16 (buf, 0); |
|
buf += 2; |
|
} |
|
|
|
m->len += (buf - m->GetPayload ()); |
|
FillI2NPMessageHeader (m, eI2NPDatabaseLookup); |
|
return m; |
|
} |
|
|
|
I2NPMessage * CreateLeaseSetDatabaseLookupMsg (const i2p::data::IdentHash& dest, |
|
const std::set<i2p::data::IdentHash>& excludedFloodfills, |
|
const i2p::tunnel::InboundTunnel * replyTunnel, const uint8_t * replyKey, const uint8_t * replyTag) |
|
{ |
|
I2NPMessage * m = NewI2NPMessage (); |
|
uint8_t * buf = m->GetPayload (); |
|
memcpy (buf, dest, 32); // key |
|
buf += 32; |
|
memcpy (buf, replyTunnel->GetNextIdentHash (), 32); // reply tunnel GW |
|
buf += 32; |
|
*buf = DATABASE_LOOKUP_DELIVERY_FLAG | DATABASE_LOOKUP_ENCYPTION_FLAG | DATABASE_LOOKUP_TYPE_LEASESET_LOOKUP; // flags |
|
htobe32buf (buf + 1, replyTunnel->GetNextTunnelID ()); // reply tunnel ID |
|
buf += 5; |
|
|
|
// excluded |
|
int cnt = excludedFloodfills.size (); |
|
htobe16buf (buf, cnt); |
|
buf += 2; |
|
if (cnt > 0) |
|
{ |
|
for (auto& it: excludedFloodfills) |
|
{ |
|
memcpy (buf, it, 32); |
|
buf += 32; |
|
} |
|
} |
|
// encryption |
|
memcpy (buf, replyKey, 32); |
|
buf[32] = 1; // 1 tag |
|
memcpy (buf + 33, replyTag, 32); |
|
buf += 65; |
|
|
|
m->len += (buf - m->GetPayload ()); |
|
FillI2NPMessageHeader (m, eI2NPDatabaseLookup); |
|
return m; |
|
} |
|
|
|
|
|
|
|
I2NPMessage * CreateDatabaseSearchReply (const i2p::data::IdentHash& ident, |
|
std::vector<i2p::data::IdentHash> routers) |
|
{ |
|
I2NPMessage * m = NewI2NPShortMessage (); |
|
uint8_t * buf = m->GetPayload (); |
|
size_t len = 0; |
|
memcpy (buf, ident, 32); |
|
len += 32; |
|
buf[len] = routers.size (); |
|
len++; |
|
for (auto it: routers) |
|
{ |
|
memcpy (buf + len, it, 32); |
|
len += 32; |
|
} |
|
memcpy (buf + len, i2p::context.GetRouterInfo ().GetIdentHash (), 32); |
|
len += 32; |
|
m->len += len; |
|
FillI2NPMessageHeader (m, eI2NPDatabaseSearchReply); |
|
return m; |
|
} |
|
|
|
I2NPMessage * CreateDatabaseStoreMsg (const i2p::data::RouterInfo * router, uint32_t replyToken) |
|
{ |
|
if (!router) // we send own RouterInfo |
|
router = &context.GetRouterInfo (); |
|
|
|
I2NPMessage * m = NewI2NPShortMessage (); |
|
uint8_t * payload = m->GetPayload (); |
|
|
|
memcpy (payload + DATABASE_STORE_KEY_OFFSET, router->GetIdentHash (), 32); |
|
payload[DATABASE_STORE_TYPE_OFFSET] = 0; // RouterInfo |
|
htobe32buf (payload + DATABASE_STORE_REPLY_TOKEN_OFFSET, replyToken); |
|
uint8_t * buf = payload + DATABASE_STORE_HEADER_SIZE; |
|
if (replyToken) |
|
{ |
|
memset (buf, 0, 4); // zero tunnelID means direct reply |
|
buf += 4; |
|
memcpy (buf, router->GetIdentHash (), 32); |
|
buf += 32; |
|
} |
|
|
|
CryptoPP::Gzip compressor; |
|
compressor.Put (router->GetBuffer (), router->GetBufferLen ()); |
|
compressor.MessageEnd(); |
|
auto size = compressor.MaxRetrievable (); |
|
htobe16buf (buf, size); // size |
|
buf += 2; |
|
// TODO: check if size doesn't exceed buffer |
|
compressor.Get (buf, size); |
|
buf += size; |
|
m->len += (buf - payload); // payload size |
|
FillI2NPMessageHeader (m, eI2NPDatabaseStore); |
|
|
|
return m; |
|
} |
|
|
|
I2NPMessage * CreateDatabaseStoreMsg (const i2p::data::LeaseSet * leaseSet, uint32_t replyToken) |
|
{ |
|
if (!leaseSet) return nullptr; |
|
I2NPMessage * m = NewI2NPShortMessage (); |
|
uint8_t * payload = m->GetPayload (); |
|
memcpy (payload + DATABASE_STORE_KEY_OFFSET, leaseSet->GetIdentHash (), 32); |
|
payload[DATABASE_STORE_TYPE_OFFSET] = 1; // LeaseSet |
|
htobe32buf (payload + DATABASE_STORE_REPLY_TOKEN_OFFSET, replyToken); |
|
size_t size = DATABASE_STORE_HEADER_SIZE; |
|
if (replyToken) |
|
{ |
|
auto leases = leaseSet->GetNonExpiredLeases (); |
|
if (leases.size () > 0) |
|
{ |
|
htobe32buf (payload + size, leases[0].tunnelID); |
|
size += 4; // reply tunnelID |
|
memcpy (payload + size, leases[0].tunnelGateway, 32); |
|
size += 32; // reply tunnel gateway |
|
} |
|
else |
|
htobe32buf (payload + DATABASE_STORE_REPLY_TOKEN_OFFSET, 0); |
|
} |
|
memcpy (payload + size, leaseSet->GetBuffer (), leaseSet->GetBufferLen ()); |
|
size += leaseSet->GetBufferLen (); |
|
m->len += size; |
|
FillI2NPMessageHeader (m, eI2NPDatabaseStore); |
|
return m; |
|
} |
|
|
|
bool HandleBuildRequestRecords (int num, uint8_t * records, uint8_t * clearText) |
|
{ |
|
for (int i = 0; i < num; i++) |
|
{ |
|
uint8_t * record = records + i*TUNNEL_BUILD_RECORD_SIZE; |
|
if (!memcmp (record + BUILD_REQUEST_RECORD_TO_PEER_OFFSET, (const uint8_t *)i2p::context.GetRouterInfo ().GetIdentHash (), 16)) |
|
{ |
|
LogPrint ("Record ",i," is ours"); |
|
|
|
i2p::crypto::ElGamalDecrypt (i2p::context.GetEncryptionPrivateKey (), record + BUILD_REQUEST_RECORD_ENCRYPTED_OFFSET, clearText); |
|
// replace record to reply |
|
if (i2p::context.AcceptsTunnels ()) |
|
{ |
|
i2p::tunnel::TransitTunnel * transitTunnel = |
|
i2p::tunnel::CreateTransitTunnel ( |
|
bufbe32toh (clearText + BUILD_REQUEST_RECORD_RECEIVE_TUNNEL_OFFSET), |
|
clearText + BUILD_REQUEST_RECORD_NEXT_IDENT_OFFSET, |
|
bufbe32toh (clearText + BUILD_REQUEST_RECORD_NEXT_TUNNEL_OFFSET), |
|
clearText + BUILD_REQUEST_RECORD_LAYER_KEY_OFFSET, |
|
clearText + BUILD_REQUEST_RECORD_IV_KEY_OFFSET, |
|
clearText[BUILD_REQUEST_RECORD_FLAG_OFFSET] & 0x80, |
|
clearText[BUILD_REQUEST_RECORD_FLAG_OFFSET ] & 0x40); |
|
i2p::tunnel::tunnels.AddTransitTunnel (transitTunnel); |
|
record[BUILD_RESPONSE_RECORD_RET_OFFSET] = 0; |
|
} |
|
else |
|
record[BUILD_RESPONSE_RECORD_RET_OFFSET] = 30; // always reject with bandwidth reason (30) |
|
|
|
//TODO: fill filler |
|
CryptoPP::SHA256().CalculateDigest(record + BUILD_RESPONSE_RECORD_HASH_OFFSET, |
|
record + BUILD_RESPONSE_RECORD_PADDING_OFFSET, BUILD_RESPONSE_RECORD_PADDING_SIZE + 1); // + 1 byte of ret |
|
// encrypt reply |
|
i2p::crypto::CBCEncryption encryption; |
|
for (int j = 0; j < num; j++) |
|
{ |
|
encryption.SetKey (clearText + BUILD_REQUEST_RECORD_REPLY_KEY_OFFSET); |
|
encryption.SetIV (clearText + BUILD_REQUEST_RECORD_REPLY_IV_OFFSET); |
|
uint8_t * reply = records + j*TUNNEL_BUILD_RECORD_SIZE; |
|
encryption.Encrypt(reply, TUNNEL_BUILD_RECORD_SIZE, reply); |
|
} |
|
return true; |
|
} |
|
} |
|
return false; |
|
} |
|
|
|
void HandleVariableTunnelBuildMsg (uint32_t replyMsgID, uint8_t * buf, size_t len) |
|
{ |
|
int num = buf[0]; |
|
LogPrint ("VariableTunnelBuild ", num, " records"); |
|
|
|
auto tunnel = i2p::tunnel::tunnels.GetPendingInboundTunnel (replyMsgID); |
|
if (tunnel) |
|
{ |
|
// endpoint of inbound tunnel |
|
LogPrint ("VariableTunnelBuild reply for tunnel ", tunnel->GetTunnelID ()); |
|
if (tunnel->HandleTunnelBuildResponse (buf, len)) |
|
{ |
|
LogPrint ("Inbound tunnel ", tunnel->GetTunnelID (), " has been created"); |
|
tunnel->SetState (i2p::tunnel::eTunnelStateEstablished); |
|
i2p::tunnel::tunnels.AddInboundTunnel (tunnel); |
|
} |
|
else |
|
{ |
|
LogPrint ("Inbound tunnel ", tunnel->GetTunnelID (), " has been declined"); |
|
tunnel->SetState (i2p::tunnel::eTunnelStateBuildFailed); |
|
} |
|
} |
|
else |
|
{ |
|
uint8_t clearText[BUILD_REQUEST_RECORD_CLEAR_TEXT_SIZE]; |
|
if (HandleBuildRequestRecords (num, buf + 1, clearText)) |
|
{ |
|
if (clearText[BUILD_REQUEST_RECORD_FLAG_OFFSET] & 0x40) // we are endpoint of outboud tunnel |
|
{ |
|
// so we send it to reply tunnel |
|
transports.SendMessage (clearText + BUILD_REQUEST_RECORD_NEXT_IDENT_OFFSET, |
|
CreateTunnelGatewayMsg (bufbe32toh (clearText + BUILD_REQUEST_RECORD_NEXT_TUNNEL_OFFSET), |
|
eI2NPVariableTunnelBuildReply, buf, len, |
|
bufbe32toh (clearText + BUILD_REQUEST_RECORD_SEND_MSG_ID_OFFSET))); |
|
} |
|
else |
|
transports.SendMessage (clearText + BUILD_REQUEST_RECORD_NEXT_IDENT_OFFSET, |
|
CreateI2NPMessage (eI2NPVariableTunnelBuild, buf, len, |
|
bufbe32toh (clearText + BUILD_REQUEST_RECORD_SEND_MSG_ID_OFFSET))); |
|
} |
|
} |
|
} |
|
|
|
void HandleTunnelBuildMsg (uint8_t * buf, size_t len) |
|
{ |
|
uint8_t clearText[BUILD_REQUEST_RECORD_CLEAR_TEXT_SIZE]; |
|
if (HandleBuildRequestRecords (NUM_TUNNEL_BUILD_RECORDS, buf, clearText)) |
|
{ |
|
if (clearText[BUILD_REQUEST_RECORD_FLAG_OFFSET] & 0x40) // we are endpoint of outbound tunnel |
|
{ |
|
// so we send it to reply tunnel |
|
transports.SendMessage (clearText + BUILD_REQUEST_RECORD_NEXT_IDENT_OFFSET, |
|
CreateTunnelGatewayMsg (bufbe32toh (clearText + BUILD_REQUEST_RECORD_NEXT_TUNNEL_OFFSET), |
|
eI2NPTunnelBuildReply, buf, len, |
|
bufbe32toh (clearText + BUILD_REQUEST_RECORD_SEND_MSG_ID_OFFSET))); |
|
} |
|
else |
|
transports.SendMessage (clearText + BUILD_REQUEST_RECORD_NEXT_IDENT_OFFSET, |
|
CreateI2NPMessage (eI2NPTunnelBuild, buf, len, |
|
bufbe32toh (clearText + BUILD_REQUEST_RECORD_SEND_MSG_ID_OFFSET))); |
|
} |
|
} |
|
|
|
void HandleVariableTunnelBuildReplyMsg (uint32_t replyMsgID, uint8_t * buf, size_t len) |
|
{ |
|
LogPrint ("VariableTunnelBuildReplyMsg replyMsgID=", replyMsgID); |
|
auto tunnel = i2p::tunnel::tunnels.GetPendingOutboundTunnel (replyMsgID); |
|
if (tunnel) |
|
{ |
|
// reply for outbound tunnel |
|
if (tunnel->HandleTunnelBuildResponse (buf, len)) |
|
{ |
|
LogPrint ("Outbound tunnel ", tunnel->GetTunnelID (), " has been created"); |
|
tunnel->SetState (i2p::tunnel::eTunnelStateEstablished); |
|
i2p::tunnel::tunnels.AddOutboundTunnel (tunnel); |
|
} |
|
else |
|
{ |
|
LogPrint ("Outbound tunnel ", tunnel->GetTunnelID (), " has been declined"); |
|
tunnel->SetState (i2p::tunnel::eTunnelStateBuildFailed); |
|
} |
|
} |
|
else |
|
LogPrint ("Pending tunnel for message ", replyMsgID, " not found"); |
|
} |
|
|
|
|
|
I2NPMessage * CreateTunnelDataMsg (const uint8_t * buf) |
|
{ |
|
I2NPMessage * msg = NewI2NPMessage (); |
|
memcpy (msg->GetPayload (), buf, i2p::tunnel::TUNNEL_DATA_MSG_SIZE); |
|
msg->len += i2p::tunnel::TUNNEL_DATA_MSG_SIZE; |
|
FillI2NPMessageHeader (msg, eI2NPTunnelData); |
|
return msg; |
|
} |
|
|
|
I2NPMessage * CreateTunnelDataMsg (uint32_t tunnelID, const uint8_t * payload) |
|
{ |
|
I2NPMessage * msg = NewI2NPMessage (); |
|
memcpy (msg->GetPayload () + 4, payload, i2p::tunnel::TUNNEL_DATA_MSG_SIZE - 4); |
|
htobe32buf (msg->GetPayload (), tunnelID); |
|
msg->len += i2p::tunnel::TUNNEL_DATA_MSG_SIZE; |
|
FillI2NPMessageHeader (msg, eI2NPTunnelData); |
|
return msg; |
|
} |
|
|
|
I2NPMessage * CreateTunnelGatewayMsg (uint32_t tunnelID, const uint8_t * buf, size_t len) |
|
{ |
|
I2NPMessage * msg = NewI2NPMessage (len); |
|
uint8_t * payload = msg->GetPayload (); |
|
htobe32buf (payload + TUNNEL_GATEWAY_HEADER_TUNNELID_OFFSET, tunnelID); |
|
htobe16buf (payload + TUNNEL_GATEWAY_HEADER_LENGTH_OFFSET, len); |
|
memcpy (payload + TUNNEL_GATEWAY_HEADER_SIZE, buf, len); |
|
msg->len += TUNNEL_GATEWAY_HEADER_SIZE + len; |
|
FillI2NPMessageHeader (msg, eI2NPTunnelGateway); |
|
return msg; |
|
} |
|
|
|
I2NPMessage * CreateTunnelGatewayMsg (uint32_t tunnelID, I2NPMessage * msg) |
|
{ |
|
if (msg->offset >= I2NP_HEADER_SIZE + TUNNEL_GATEWAY_HEADER_SIZE) |
|
{ |
|
// message is capable to be used without copying |
|
uint8_t * payload = msg->GetBuffer () - TUNNEL_GATEWAY_HEADER_SIZE; |
|
htobe32buf (payload + TUNNEL_GATEWAY_HEADER_TUNNELID_OFFSET, tunnelID); |
|
int len = msg->GetLength (); |
|
htobe16buf (payload + TUNNEL_GATEWAY_HEADER_LENGTH_OFFSET, len); |
|
msg->offset -= (I2NP_HEADER_SIZE + TUNNEL_GATEWAY_HEADER_SIZE); |
|
msg->len = msg->offset + I2NP_HEADER_SIZE + TUNNEL_GATEWAY_HEADER_SIZE +len; |
|
FillI2NPMessageHeader (msg, eI2NPTunnelGateway); |
|
return msg; |
|
} |
|
else |
|
{ |
|
I2NPMessage * msg1 = CreateTunnelGatewayMsg (tunnelID, msg->GetBuffer (), msg->GetLength ()); |
|
DeleteI2NPMessage (msg); |
|
return msg1; |
|
} |
|
} |
|
|
|
I2NPMessage * CreateTunnelGatewayMsg (uint32_t tunnelID, I2NPMessageType msgType, |
|
const uint8_t * buf, size_t len, uint32_t replyMsgID) |
|
{ |
|
I2NPMessage * msg = NewI2NPMessage (len); |
|
size_t gatewayMsgOffset = I2NP_HEADER_SIZE + TUNNEL_GATEWAY_HEADER_SIZE; |
|
msg->offset += gatewayMsgOffset; |
|
msg->len += gatewayMsgOffset; |
|
memcpy (msg->GetPayload (), buf, len); |
|
msg->len += len; |
|
FillI2NPMessageHeader (msg, msgType, replyMsgID); // create content message |
|
len = msg->GetLength (); |
|
msg->offset -= gatewayMsgOffset; |
|
uint8_t * payload = msg->GetPayload (); |
|
htobe32buf (payload + TUNNEL_GATEWAY_HEADER_TUNNELID_OFFSET, tunnelID); |
|
htobe16buf (payload + TUNNEL_GATEWAY_HEADER_LENGTH_OFFSET, len); |
|
FillI2NPMessageHeader (msg, eI2NPTunnelGateway); // gateway message |
|
return msg; |
|
} |
|
|
|
size_t GetI2NPMessageLength (const uint8_t * msg) |
|
{ |
|
return bufbe16toh (msg + I2NP_HEADER_SIZE_OFFSET) + I2NP_HEADER_SIZE; |
|
} |
|
|
|
void HandleI2NPMessage (uint8_t * msg, size_t len) |
|
{ |
|
uint8_t typeID = msg[I2NP_HEADER_TYPEID_OFFSET]; |
|
uint32_t msgID = bufbe32toh (msg + I2NP_HEADER_MSGID_OFFSET); |
|
LogPrint ("I2NP msg received len=", len,", type=", (int)typeID, ", msgID=", (unsigned int)msgID); |
|
|
|
uint8_t * buf = msg + I2NP_HEADER_SIZE; |
|
int size = bufbe16toh (msg + I2NP_HEADER_SIZE_OFFSET); |
|
switch (typeID) |
|
{ |
|
case eI2NPVariableTunnelBuild: |
|
LogPrint ("VariableTunnelBuild"); |
|
HandleVariableTunnelBuildMsg (msgID, buf, size); |
|
break; |
|
case eI2NPVariableTunnelBuildReply: |
|
LogPrint ("VariableTunnelBuildReply"); |
|
HandleVariableTunnelBuildReplyMsg (msgID, buf, size); |
|
break; |
|
case eI2NPTunnelBuild: |
|
LogPrint ("TunnelBuild"); |
|
HandleTunnelBuildMsg (buf, size); |
|
break; |
|
case eI2NPTunnelBuildReply: |
|
LogPrint ("TunnelBuildReply"); |
|
// TODO: |
|
break; |
|
default: |
|
LogPrint ("Unexpected message ", (int)typeID); |
|
} |
|
} |
|
|
|
void HandleI2NPMessage (I2NPMessage * msg) |
|
{ |
|
if (msg) |
|
{ |
|
switch (msg->GetTypeID ()) |
|
{ |
|
case eI2NPTunnelData: |
|
LogPrint ("TunnelData"); |
|
i2p::tunnel::tunnels.PostTunnelData (msg); |
|
break; |
|
case eI2NPTunnelGateway: |
|
LogPrint ("TunnelGateway"); |
|
i2p::tunnel::tunnels.PostTunnelData (msg); |
|
break; |
|
case eI2NPGarlic: |
|
LogPrint ("Garlic"); |
|
if (msg->from) |
|
{ |
|
if (msg->from->GetTunnelPool ()) |
|
msg->from->GetTunnelPool ()->ProcessGarlicMessage (msg); |
|
else |
|
{ |
|
LogPrint (eLogInfo, "Local destination for garlic doesn't exist anymore"); |
|
DeleteI2NPMessage (msg); |
|
} |
|
} |
|
else |
|
i2p::context.ProcessGarlicMessage (msg); |
|
break; |
|
case eI2NPDatabaseStore: |
|
case eI2NPDatabaseSearchReply: |
|
case eI2NPDatabaseLookup: |
|
// forward to netDb |
|
i2p::data::netdb.PostI2NPMsg (msg); |
|
break; |
|
case eI2NPDeliveryStatus: |
|
LogPrint ("DeliveryStatus"); |
|
if (msg->from && msg->from->GetTunnelPool ()) |
|
msg->from->GetTunnelPool ()->ProcessDeliveryStatus (msg); |
|
else |
|
i2p::context.ProcessDeliveryStatusMessage (msg); |
|
break; |
|
case eI2NPVariableTunnelBuild: |
|
case eI2NPVariableTunnelBuildReply: |
|
case eI2NPTunnelBuild: |
|
case eI2NPTunnelBuildReply: |
|
// forward to tunnel thread |
|
i2p::tunnel::tunnels.PostTunnelData (msg); |
|
break; |
|
default: |
|
HandleI2NPMessage (msg->GetBuffer (), msg->GetLength ()); |
|
DeleteI2NPMessage (msg); |
|
} |
|
} |
|
} |
|
|
|
I2NPMessagesHandler::~I2NPMessagesHandler () |
|
{ |
|
Flush (); |
|
} |
|
|
|
void I2NPMessagesHandler::PutNextMessage (I2NPMessage * msg) |
|
{ |
|
if (msg) |
|
{ |
|
switch (msg->GetTypeID ()) |
|
{ |
|
case eI2NPTunnelData: |
|
LogPrint ("TunnelData"); |
|
m_TunnelMsgs.push_back (msg); |
|
break; |
|
case eI2NPTunnelGateway: |
|
LogPrint ("TunnelGateway"); |
|
m_TunnelGatewayMsgs.push_back (msg); |
|
break; |
|
default: |
|
HandleI2NPMessage (msg); |
|
} |
|
} |
|
} |
|
|
|
void I2NPMessagesHandler::Flush () |
|
{ |
|
if (!m_TunnelMsgs.empty ()) |
|
{ |
|
i2p::tunnel::tunnels.PostTunnelData (m_TunnelMsgs); |
|
m_TunnelMsgs.clear (); |
|
} |
|
if (!m_TunnelGatewayMsgs.empty ()) |
|
{ |
|
i2p::tunnel::tunnels.PostTunnelData (m_TunnelGatewayMsgs); |
|
m_TunnelGatewayMsgs.clear (); |
|
} |
|
} |
|
}
|
|
|