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fixed small issues

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orignal 2014-04-07 18:54:28 -04:00
parent be563dcbd1
commit 9f8f91a2ee
2 changed files with 36 additions and 40 deletions
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51
SSU.cpp
View File

@ -138,8 +138,22 @@ namespace ssu
void SSUSession::ProcessIntroKeyMessage (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint) void SSUSession::ProcessIntroKeyMessage (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint)
{ {
if (ProcessIntroKeyEncryptedMessage (buf, len)) auto introKey = GetIntroKey ();
if (!introKey)
{ {
LogPrint ("SSU is not supported");
return;
}
// use intro key for verification and decryption
if (!Validate (buf, len, introKey))
{
LogPrint ("MAC verification intro key failed");
Failed ();
return;
}
Decrypt (buf, len, introKey);
CreateAESandMacKey (buf + sizeof (SSUHeader), m_SessionKey, m_MacKey);
SSUHeader * header = (SSUHeader *)buf; SSUHeader * header = (SSUHeader *)buf;
switch (header->GetPayloadType ()) switch (header->GetPayloadType ())
{ {
@ -149,13 +163,18 @@ namespace ssu
case PAYLOAD_TYPE_SESSION_CREATED: case PAYLOAD_TYPE_SESSION_CREATED:
ProcessSessionCreated (buf, len); ProcessSessionCreated (buf, len);
break; break;
case PAYLOAD_TYPE_SESSION_DESTROYED:
{
LogPrint ("SSU session destroy with into key received");
m_Server.DeleteSession (this); // delete this
break;
}
case PAYLOAD_TYPE_PEER_TEST: case PAYLOAD_TYPE_PEER_TEST:
// TODO // TODO
break; break;
default: ; default: ;
} }
} }
}
void SSUSession::ProcessSessionRequest (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint) void SSUSession::ProcessSessionRequest (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint)
{ {
@ -414,29 +433,6 @@ namespace ssu
} }
} }
bool SSUSession::ProcessIntroKeyEncryptedMessage (uint8_t * buf, size_t len)
{
auto introKey = GetIntroKey ();
if (introKey)
{
// use intro key for verification and decryption
if (Validate (buf, len, introKey))
{
Decrypt (buf, len, introKey);
CreateAESandMacKey (buf + sizeof (SSUHeader), m_SessionKey, m_MacKey);
return true;
}
else
{
LogPrint ("MAC verification failed");
Failed ();
}
}
else
LogPrint ("SSU is not supported");
return false;
}
void SSUSession::FillHeaderAndEncrypt (uint8_t payloadType, uint8_t * buf, size_t len, void SSUSession::FillHeaderAndEncrypt (uint8_t payloadType, uint8_t * buf, size_t len,
const uint8_t * aesKey, const uint8_t * iv, const uint8_t * macKey) const uint8_t * aesKey, const uint8_t * iv, const uint8_t * macKey)
{ {
@ -734,12 +730,13 @@ namespace ssu
void SSUSession::SendPeerTest () void SSUSession::SendPeerTest ()
{ {
auto introKey = GetIntroKey (); auto address = i2p::context.GetRouterInfo ().GetSSUAddress ();
if (!introKey) if (!address)
{ {
LogPrint ("SSU is not supported. Can't send peer test"); LogPrint ("SSU is not supported. Can't send peer test");
return; return;
} }
auto introKey = address->key;
uint8_t buf[80 + 18]; uint8_t buf[80 + 18];
uint8_t * payload = buf + sizeof (SSUHeader); uint8_t * payload = buf + sizeof (SSUHeader);
CryptoPP::RandomNumberGenerator& rnd = i2p::context.GetRandomNumberGenerator (); CryptoPP::RandomNumberGenerator& rnd = i2p::context.GetRandomNumberGenerator ();

1
SSU.h
View File

@ -110,7 +110,6 @@ namespace ssu
void Send (i2p::I2NPMessage * msg); void Send (i2p::I2NPMessage * msg);
void Send (uint8_t type, const uint8_t * payload, size_t len); // with session key void Send (uint8_t type, const uint8_t * payload, size_t len); // with session key
bool ProcessIntroKeyEncryptedMessage (uint8_t * buf, size_t len);
void FillHeaderAndEncrypt (uint8_t payloadType, uint8_t * buf, size_t len, const uint8_t * aesKey, const uint8_t * iv, const uint8_t * macKey); void FillHeaderAndEncrypt (uint8_t payloadType, uint8_t * buf, size_t len, const uint8_t * aesKey, const uint8_t * iv, const uint8_t * macKey);
void Decrypt (uint8_t * buf, size_t len, const uint8_t * aesKey); void Decrypt (uint8_t * buf, size_t len, const uint8_t * aesKey);
bool Validate (uint8_t * buf, size_t len, const uint8_t * macKey); bool Validate (uint8_t * buf, size_t len, const uint8_t * macKey);