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fix memory leak with udp tunnel

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pull/662/head
Jeff Becker 8 years ago
parent 43c3bdf7c5
commit 577d9ddf65
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GPG Key ID: AB950234D6EA286B
4 changed files with 26 additions and 26 deletions
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31
Datagram.cpp
Unescape Escape View File

@ -12,8 +12,10 @@ namespace i2p
namespace datagram
{
DatagramDestination::DatagramDestination (std::shared_ptr<i2p::client::ClientDestination> owner):
m_Owner (owner.get()), m_Receiver (nullptr)
m_Owner (owner.get()),
m_Receiver (nullptr)
{
m_Identity.FromBase64 (owner->GetIdentity()->ToBase64());
}
DatagramDestination::~DatagramDestination ()
@ -24,16 +26,16 @@ namespace datagram
void DatagramDestination::SendDatagramTo (const uint8_t * payload, size_t len, const i2p::data::IdentHash& ident, uint16_t fromPort, uint16_t toPort)
{
auto owner = m_Owner;
auto i = owner->GetIdentity();
uint8_t buf[MAX_DATAGRAM_SIZE];
auto identityLen = i->ToBuffer (buf, MAX_DATAGRAM_SIZE);
std::vector<uint8_t> v(MAX_DATAGRAM_SIZE);
uint8_t * buf = v.data();
auto identityLen = m_Identity.ToBuffer (buf, MAX_DATAGRAM_SIZE);
uint8_t * signature = buf + identityLen;
auto signatureLen = i->GetSignatureLen ();
auto signatureLen = m_Identity.GetSignatureLen ();
uint8_t * buf1 = signature + signatureLen;
size_t headerLen = identityLen + signatureLen;
memcpy (buf1, payload, len);
if (i->GetSigningKeyType () == i2p::data::SIGNING_KEY_TYPE_DSA_SHA1)
if (m_Identity.GetSigningKeyType () == i2p::data::SIGNING_KEY_TYPE_DSA_SHA1)
{
uint8_t hash[32];
SHA256(buf1, len, hash);
@ -48,7 +50,7 @@ namespace datagram
}
void DatagramDestination::HandleDatagram (uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len)
void DatagramDestination::HandleDatagram (uint16_t fromPort, uint16_t toPort,uint8_t * const &buf, size_t len)
{
i2p::data::IdentityEx identity;
size_t identityLen = identity.FromBuffer (buf, len);
@ -93,7 +95,7 @@ namespace datagram
uint8_t uncompressed[MAX_DATAGRAM_SIZE];
size_t uncompressedLen = m_Inflator.Inflate (buf, len, uncompressed, MAX_DATAGRAM_SIZE);
if (uncompressedLen)
HandleDatagram (fromPort, toPort, uncompressed, uncompressedLen);
HandleDatagram (fromPort, toPort, uncompressed, uncompressedLen);
}
std::shared_ptr<I2NPMessage> DatagramDestination::CreateDataMessage (const uint8_t * payload, size_t len, uint16_t fromPort, uint16_t toPort)
@ -121,7 +123,7 @@ namespace datagram
if (m_Sessions.empty ()) return;
auto now = i2p::util::GetMillisecondsSinceEpoch();
LogPrint(eLogDebug, "DatagramDestination: clean up sessions");
std::lock_guard<std::mutex> lock(m_SessionsMutex);
std::unique_lock<std::mutex> lock(m_SessionsMutex);
// for each session ...
for (auto it = m_Sessions.begin (); it != m_Sessions.end (); )
{
@ -270,13 +272,16 @@ namespace datagram
bool DatagramSession::ShouldUpdateRoutingPath() const
{
bool dead = m_RoutingSession == nullptr || m_RoutingSession->GetSharedRoutingPath () == nullptr;
auto now = i2p::util::GetMillisecondsSinceEpoch ();
// we need to rotate paths becuase the routing path is too old
if (now - m_LastPathChange >= DATAGRAM_SESSION_PATH_SWITCH_INTERVAL) return true;
// our path looks dead so we need to rotate paths
if (now - m_LastSuccess >= DATAGRAM_SESSION_PATH_TIMEOUT) return true;
// if (now - m_LastPathChange >= DATAGRAM_SESSION_PATH_SWITCH_INTERVAL) return true;
// too fast switching paths
if (now - m_LastPathChange < DATAGRAM_SESSION_PATH_MIN_LIFETIME ) return false;
// our path looks dead so we need to rotate paths
if (now - m_LastSuccess >= DATAGRAM_SESSION_PATH_TIMEOUT) return !dead;
// if we have a routing session and routing path we don't need to switch paths
return m_RoutingSession == nullptr || m_RoutingSession->GetSharedRoutingPath () == nullptr;
return dead;
}

3
Datagram.h
Unescape Escape View File

@ -133,13 +133,14 @@ namespace datagram
std::shared_ptr<I2NPMessage> CreateDataMessage (const uint8_t * payload, size_t len, uint16_t fromPort, uint16_t toPort);
void HandleDatagram (uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len);
void HandleDatagram (uint16_t fromPort, uint16_t toPort, uint8_t *const& buf, size_t len);
/** find a receiver by port, if none by port is found try default receiever, otherwise returns nullptr */
Receiver FindReceiver(uint16_t port);
private:
i2p::client::ClientDestination * m_Owner;
i2p::data::IdentityEx m_Identity;
Receiver m_Receiver; // default
std::mutex m_SessionsMutex;
std::map<i2p::data::IdentHash, std::shared_ptr<DatagramSession> > m_Sessions;

16
I2PTunnel.cpp
Unescape Escape View File

@ -559,23 +559,23 @@ namespace client
}
/** create new udp session */
boost::asio::ip::udp::endpoint ep(m_LocalAddress, 0);
m_Sessions.push_back(new UDPSession(ep, m_LocalDest, m_RemoteEndpoint, ih, localPort, remotePort));
m_Sessions.push_back(new UDPSession(ep, m_LocalDest, m_RemoteEndpoint, &ih, localPort, remotePort));
return m_Sessions.back();
}
UDPSession::UDPSession(boost::asio::ip::udp::endpoint localEndpoint,
const std::shared_ptr<i2p::client::ClientDestination> & localDestination,
boost::asio::ip::udp::endpoint endpoint, const i2p::data::IdentHash to,
boost::asio::ip::udp::endpoint endpoint, const i2p::data::IdentHash * to,
uint16_t ourPort, uint16_t theirPort) :
m_Destination(localDestination->GetDatagramDestination()),
m_Service(localDestination->GetService()),
IPSocket(localDestination->GetService(), localEndpoint),
Identity(to),
SendEndpoint(endpoint),
LastActivity(i2p::util::GetMillisecondsSinceEpoch()),
LocalPort(ourPort),
RemotePort(theirPort)
{
memcpy(Identity, to->data(), 32);
Receive();
}
@ -592,13 +592,7 @@ namespace client
{
LogPrint(eLogDebug, "UDPSession: forward ", len, "B from ", FromEndpoint);
LastActivity = i2p::util::GetMillisecondsSinceEpoch();
uint8_t * data = new uint8_t[len];
memcpy(data, m_Buffer, len);
m_Service.post([&,len, data] () {
m_Destination->SendDatagramTo(data, len, Identity, 0, 0);
delete [] data;
});
m_Destination->SendDatagramTo(m_Buffer, len, Identity, 0, 0);
Receive();
} else {
LogPrint(eLogError, "UDPSession: ", ecode.message());
@ -727,7 +721,7 @@ namespace client
if(m_Session) delete m_Session;
boost::asio::ip::udp::endpoint ep(boost::asio::ip::address::from_string("127.0.0.1"), 0);
m_Session = new UDPSession(m_LocalEndpoint, m_LocalDest, ep, *m_RemoteIdent, LocalPort, RemotePort);
m_Session = new UDPSession(m_LocalEndpoint, m_LocalDest, ep, m_RemoteIdent, LocalPort, RemotePort);
}
void I2PUDPClientTunnel::HandleRecvFromI2P(const i2p::data::IdentityEx& from, uint16_t /*fromPort*/,

2
I2PTunnel.h
Unescape Escape View File

@ -155,7 +155,7 @@ namespace client
UDPSession(boost::asio::ip::udp::endpoint localEndpoint,
const std::shared_ptr<i2p::client::ClientDestination> & localDestination,
boost::asio::ip::udp::endpoint remote, const i2p::data::IdentHash ident,
boost::asio::ip::udp::endpoint remote, const i2p::data::IdentHash * ident,
uint16_t ourPort, uint16_t theirPort);
void HandleReceived(const boost::system::error_code & ecode, std::size_t len);
void Receive();

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