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Code Issues Releases Activity

allow user/password authentication

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orignal 2023-05-22 08:58:04 -04:00
parent c984f89dfb
commit e95fb3ab89
1 changed files with 51 additions and 2 deletions
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53
libi2pd_client/SOCKS.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2020, The PurpleI2P Project
* Copyright (c) 2013-2023, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -66,6 +66,11 @@ namespace proxy
GET5_IPV6,
GET5_HOST_SIZE,
GET5_HOST,
GET5_USERPASSWD,
GET5_USER_SIZE,
GET5_USER,
GET5_PASSWD_SIZE,
GET5_PASSWD,
READY,
UPSTREAM_RESOLVE,
UPSTREAM_CONNECT,
@ -129,6 +134,7 @@ namespace proxy
boost::asio::const_buffers_1 GenerateSOCKS5Response(errTypes error, addrTypes type, const address &addr, uint16_t port);
boost::asio::const_buffers_1 GenerateUpstreamRequest();
bool Socks5ChooseAuth();
void Socks5UserPasswdResponse ();
void SocksRequestFailed(errTypes error);
void SocksRequestSuccess();
void SentSocksFailed(const boost::system::error_code & ecode);
@ -324,6 +330,15 @@ namespace proxy
}
}
void SOCKSHandler::Socks5UserPasswdResponse ()
{
m_response[0] = 5; // Version
m_response[1] = 0; // Response code
LogPrint(eLogDebug, "SOCKS: v5 user/password response");
boost::asio::async_write(*m_sock, boost::asio::const_buffers_1(m_response, 2),
std::bind(&SOCKSHandler::SentSocksResponse, shared_from_this(), std::placeholders::_1));
}
/* All hope is lost beyond this point */
void SOCKSHandler::SocksRequestFailed(SOCKSHandler::errTypes error)
{
@ -438,10 +453,15 @@ namespace proxy
m_parseleft --;
if (*sock_buff == AUTH_NONE)
m_authchosen = AUTH_NONE;
else if (*sock_buff == AUTH_USERPASSWD)
m_authchosen = AUTH_USERPASSWD;
if ( m_parseleft == 0 )
{
if (!Socks5ChooseAuth()) return false;
EnterState(GET5_REQUESTV);
if (m_authchosen == AUTH_USERPASSWD)
EnterState(GET5_USERPASSWD);
else
EnterState(GET5_REQUESTV);
}
break;
case GET_COMMAND:
@ -557,6 +577,35 @@ namespace proxy
m_parseleft--;
if (m_parseleft == 0) EnterState(GET_PORT);
break;
case GET5_USERPASSWD:
if (*sock_buff != 1)
{
LogPrint(eLogError,"SOCKS: v5 rejected invalid username/password subnegotiation: ", ((int)*sock_buff));
SocksRequestFailed(SOCKS5_GEN_FAIL);
return false;
}
EnterState(GET5_USER_SIZE);
break;
case GET5_USER_SIZE:
EnterState(GET5_USER, *sock_buff);
break;
case GET5_USER:
// skip user for now
m_parseleft--;
if (m_parseleft == 0) EnterState(GET5_PASSWD_SIZE);
break;
case GET5_PASSWD_SIZE:
EnterState(GET5_PASSWD, *sock_buff);
break;
case GET5_PASSWD:
// skip passwd for now
m_parseleft--;
if (m_parseleft == 0)
{
Socks5UserPasswdResponse ();
EnterState(GET5_REQUESTV);
}
break;
default:
LogPrint(eLogError, "SOCKS: Parse state?? ", m_state);
Terminate();