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[NTCP2] fix socks proxy support

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Signed-off-by: R4SAS <r4sas@i2pmail.org>
This commit is contained in:
R4SAS 2020-04-30 04:44:13 +03:00
parent 27d69894d4
commit 1aa0da3382
6 changed files with 109 additions and 121 deletions
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42
libi2pd_client/SOCKS.cpp
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@ -118,7 +118,7 @@ namespace proxy
boost::asio::const_buffers_1 GenerateSOCKS5SelectAuth(authMethods method);
boost::asio::const_buffers_1 GenerateSOCKS4Response(errTypes error, uint32_t ip, uint16_t port);
boost::asio::const_buffers_1 GenerateSOCKS5Response(errTypes error, addrTypes type, const address &addr, uint16_t port);
boost::asio::const_buffers_1 GenerateUpstreamRequest();
boost::asio::const_buffers_1 GenerateUpstreamRequest();
bool Socks5ChooseAuth();
void SocksRequestFailed(errTypes error);
void SocksRequestSuccess();
@ -128,27 +128,27 @@ namespace proxy
void HandleStreamRequestComplete (std::shared_ptr<i2p::stream::Stream> stream);
void ForwardSOCKS();
void SocksUpstreamSuccess();
void AsyncUpstreamSockRead();
void SendUpstreamRequest();
void SocksUpstreamSuccess();
void AsyncUpstreamSockRead();
void SendUpstreamRequest();
void HandleUpstreamData(uint8_t * buff, std::size_t len);
void HandleUpstreamSockSend(const boost::system::error_code & ecode, std::size_t bytes_transfered);
void HandleUpstreamSockRecv(const boost::system::error_code & ecode, std::size_t bytes_transfered);
void HandleUpstreamConnected(const boost::system::error_code & ecode,
void HandleUpstreamSockSend(const boost::system::error_code & ecode, std::size_t bytes_transfered);
void HandleUpstreamSockRecv(const boost::system::error_code & ecode, std::size_t bytes_transfered);
void HandleUpstreamConnected(const boost::system::error_code & ecode,
boost::asio::ip::tcp::resolver::iterator itr);
void HandleUpstreamResolved(const boost::system::error_code & ecode,
void HandleUpstreamResolved(const boost::system::error_code & ecode,
boost::asio::ip::tcp::resolver::iterator itr);
boost::asio::ip::tcp::resolver m_proxy_resolver;
uint8_t m_sock_buff[socks_buffer_size];
std::shared_ptr<boost::asio::ip::tcp::socket> m_sock, m_upstreamSock;
boost::asio::ip::tcp::resolver m_proxy_resolver;
uint8_t m_sock_buff[socks_buffer_size];
std::shared_ptr<boost::asio::ip::tcp::socket> m_sock, m_upstreamSock;
std::shared_ptr<i2p::stream::Stream> m_stream;
uint8_t *m_remaining_data; //Data left to be sent
uint8_t *m_remaining_upstream_data; //upstream data left to be forwarded
uint8_t m_response[7+max_socks_hostname_size];
uint8_t m_upstream_response[SOCKS_UPSTREAM_SOCKS4A_REPLY_SIZE];
uint8_t m_upstream_request[14+max_socks_hostname_size];
std::size_t m_upstream_response_len;
uint8_t m_upstream_response[SOCKS_UPSTREAM_SOCKS4A_REPLY_SIZE];
uint8_t m_upstream_request[14+max_socks_hostname_size];
std::size_t m_upstream_response_len;
address m_address; //Address
std::size_t m_remaining_data_len; //Size of the data left to be sent
uint32_t m_4aip; //Used in 4a requests
@ -161,11 +161,11 @@ namespace proxy
cmdTypes m_cmd; // Command requested
state m_state;
const bool m_UseUpstreamProxy; // do we want to use the upstream proxy for non i2p addresses?
const std::string m_UpstreamProxyAddress;
const uint16_t m_UpstreamProxyPort;
const std::string m_UpstreamProxyAddress;
const uint16_t m_UpstreamProxyPort;
public:
SOCKSHandler(SOCKSServer * parent, std::shared_ptr<boost::asio::ip::tcp::socket> sock, const std::string & upstreamAddr, const uint16_t upstreamPort, const bool useUpstream) :
SOCKSHandler(SOCKSServer * parent, std::shared_ptr<boost::asio::ip::tcp::socket> sock, const std::string & upstreamAddr, const uint16_t upstreamPort, const bool useUpstream) :
I2PServiceHandler(parent),
m_proxy_resolver(parent->GetService()),
m_sock(sock), m_stream(nullptr),
@ -226,7 +226,7 @@ namespace proxy
boost::asio::const_buffers_1 SOCKSHandler::GenerateSOCKS5Response(SOCKSHandler::errTypes error, SOCKSHandler::addrTypes type, const SOCKSHandler::address &addr, uint16_t port)
{
size_t size = 6;
size_t size = 6; // header + port
assert(error <= SOCKS5_ADDR_UNSUP);
m_response[0] = '\x05'; //Version
m_response[1] = error; //Response code
@ -235,15 +235,15 @@ namespace proxy
switch (type)
{
case ADDR_IPV4:
size = 10;
size += 4;
htobe32buf(m_response + 4, addr.ip);
break;
case ADDR_IPV6:
size = 22;
size += 16;
memcpy(m_response + 4, addr.ipv6, 16);
break;
case ADDR_DNS:
size = 7 + addr.dns.size;
size += (1 + addr.dns.size); /* name length + domain name */
m_response[4] = addr.dns.size;
memcpy(m_response + 5, addr.dns.value, addr.dns.size);
// replace type to IPv4 for support socks5 clients