From 2cb6283d004b37c145cfd08e8a1a1521651e7868 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Fri, 6 Apr 2018 15:23:56 -0400
Subject: [PATCH] outproxy authorization

---
 libi2pd/Base.cpp             | 15 +++++++++++++++
 libi2pd/Base.h               |  9 ++++++---
 libi2pd_client/HTTPProxy.cpp | 18 +++++++++++++++---
 3 files changed, 36 insertions(+), 6 deletions(-)

diff --git a/libi2pd/Base.cpp b/libi2pd/Base.cpp
index 09f04c05..f80f2751 100644
--- a/libi2pd/Base.cpp
+++ b/libi2pd/Base.cpp
@@ -210,6 +210,21 @@ namespace data
 		return 4*d.quot;
 	}
 
+	std::string ToBase64Standard (const std::string& in)
+	{
+		auto len = Base64EncodingBufferSize (in.length ());	
+		char * str = new char[len+1];
+		auto l = ByteStreamToBase64 ((const uint8_t *)in.c_str (), in.length (), str, len);
+		str[l] = 0;
+		// replace '-' by '+' and '~' by '/'
+		for (size_t i = 0; i < l; i++)
+			if (str[i] == '-') str[i] = '+';
+			else if (str[i] == '~') str[i] = '/';
+		std::string s(str);
+		delete[] str;
+		return s;
+	}
+
 	/*
 	*
 	* iT64
diff --git a/libi2pd/Base.h b/libi2pd/Base.h
index bc92376f..a273f468 100644
--- a/libi2pd/Base.h
+++ b/libi2pd/Base.h
@@ -15,10 +15,13 @@ namespace data {
 	size_t Base32ToByteStream (const char * inBuf, size_t len, uint8_t * outBuf, size_t outLen);
 	size_t ByteStreamToBase32 (const uint8_t * InBuf, size_t len, char * outBuf, size_t outLen);
 
-  /**
+ 	/**
      Compute the size for a buffer to contain encoded base64 given that the size of the input is input_size bytes
-   */
-  size_t Base64EncodingBufferSize(const size_t input_size);
+   	*/
+	size_t Base64EncodingBufferSize(const size_t input_size);
+	
+	std::string ToBase64Standard (const std::string& in); // using standard table, for Proxy-Authorization	
+	
 } // data
 } // i2p
 
diff --git a/libi2pd_client/HTTPProxy.cpp b/libi2pd_client/HTTPProxy.cpp
index ac5d907d..47f756d3 100644
--- a/libi2pd_client/HTTPProxy.cpp
+++ b/libi2pd_client/HTTPProxy.cpp
@@ -389,11 +389,19 @@ namespace proxy {
 		m_ClientRequestURL.host   = "";
 		m_ClientRequest.uri = m_ClientRequestURL.to_string();
 
+		if (m_ProxyURL.schema == "http" && (!m_ProxyURL.user.empty () || !m_ProxyURL.pass.empty ()))
+		{
+			// http proxy authorization
+			std::string s = "basic " + i2p::data::ToBase64Standard (m_ProxyURL.user + ":" + m_ProxyURL.pass);
+			m_ClientRequest.AddHeader("Proxy-Authorization", s);
+		}
+
 		m_ClientRequest.write(m_ClientRequestBuffer);
 		m_ClientRequestBuffer << m_recv_buf.substr(m_req_len);
 
 		// assume http if empty schema
-		if (m_ProxyURL.schema == "" || m_ProxyURL.schema == "http") {
+		if (m_ProxyURL.schema == "" || m_ProxyURL.schema == "http") 
+		{
 			// handle upstream http proxy
 			if (!m_ProxyURL.port) m_ProxyURL.port = 80;
 			if (m_ProxyURL.is_i2p())
@@ -409,14 +417,18 @@ namespace proxy {
 					m_proxysock->async_connect(ep, std::bind(&HTTPReqHandler::HandleUpstreamHTTPProxyConnect, this, std::placeholders::_1));
 				}));
 			}
-		} else if (m_ProxyURL.schema == "socks") {
+		} 
+		else if (m_ProxyURL.schema == "socks") 
+		{
 			// handle upstream socks proxy
 			if (!m_ProxyURL.port) m_ProxyURL.port = 9050; // default to tor default if not specified
 			boost::asio::ip::tcp::resolver::query q(m_ProxyURL.host, std::to_string(m_ProxyURL.port));
 			m_proxy_resolver.async_resolve(q, std::bind(&HTTPReqHandler::HandleUpstreamProxyResolved, this, std::placeholders::_1, std::placeholders::_2, [&](boost::asio::ip::tcp::endpoint ep) {
 						m_proxysock->async_connect(ep, std::bind(&HTTPReqHandler::HandleUpstreamSocksProxyConnect, this, std::placeholders::_1));
 			}));
-		} else {
+		} 
+		else 
+		{
 			// unknown type, complain
 			GenericProxyError("unknown outproxy url", m_ProxyURL.to_string().c_str());
 		}