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Merge pull request #49 from chertov/master

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use HTTPConnection as the base class for proxy
This commit is contained in:
orignal 2014-03-29 20:05:19 -04:00
parent 69c013d6ab df0e235de2
commit 9d373dba1e
4 changed files with 141 additions and 338 deletions
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281
HTTPProxy.cpp
View file

@ -1,80 +1,13 @@
#include <boost/bind.hpp>
#include <boost/lexical_cast.hpp> #include <boost/lexical_cast.hpp>
#include <boost/bind/protect.hpp>
#include <boost/regex.hpp> #include <boost/regex.hpp>
#include "base64.h"
#include "Log.h"
#include "Tunnel.h"
#include "TransitTunnel.h"
#include "Transports.h"
#include "NetDb.h"
#include "Streaming.h"
#include "HTTPProxy.h" #include "HTTPProxy.h"
namespace i2p namespace i2p
{ {
namespace proxy namespace proxy
{ {
namespace misc_strings void HTTPProxyConnection::parseHeaders(const std::string& h, std::vector<header>& hm) {
{
const char name_value_separator[] = { ':', ' ' };
const char crlf[] = { '\r', '\n' };
} // namespace misc_strings
std::vector<boost::asio::const_buffer> HTTPConnection::reply::to_buffers()
{
std::vector<boost::asio::const_buffer> buffers;
if (headers.size () > 0)
{
buffers.push_back (boost::asio::buffer ("HTTP/1.0 200 OK\r\n")); // always OK
for (std::size_t i = 0; i < headers.size(); ++i)
{
header& h = headers[i];
buffers.push_back(boost::asio::buffer(h.name));
buffers.push_back(boost::asio::buffer(misc_strings::name_value_separator));
buffers.push_back(boost::asio::buffer(h.value));
buffers.push_back(boost::asio::buffer(misc_strings::crlf));
}
buffers.push_back(boost::asio::buffer(misc_strings::crlf));
}
buffers.push_back(boost::asio::buffer(content));
return buffers;
}
void HTTPConnection::Terminate ()
{
m_Socket->close ();
delete this;
}
void HTTPConnection::Receive ()
{
m_Socket->async_read_some (boost::asio::buffer (m_Buffer, 8192),
boost::bind(&HTTPConnection::HandleReceive, this,
boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred));
}
void HTTPConnection::HandleReceive (const boost::system::error_code& ecode, std::size_t bytes_transferred)
{
if (!ecode)
{
m_Buffer[bytes_transferred] = 0;
request m_Request;
ExtractRequest (m_Request);
parseHeaders (m_Buffer, m_Request.headers);
LogPrint("Requesting ", m_Request.host, " with path ", m_Request.uri, " and method ", m_Request.method);
HandleDestinationRequest (m_Request.host, m_Request.uri);
}
else if (ecode != boost::asio::error::operation_aborted)
Terminate ();
}
void HTTPConnection::parseHeaders(const std::string& h, std::vector<header>& hm) {
std::string str (h); std::string str (h);
std::string::size_type idx; std::string::size_type idx;
std::string t; std::string t;
@ -97,7 +30,7 @@ namespace proxy
} }
} }
void HTTPConnection::ExtractRequest (request &m_Request) void HTTPProxyConnection::ExtractRequest(request &m_Request)
{ {
std::string requestString = m_Buffer; std::string requestString = m_Buffer;
int idx=requestString.find(" "); int idx=requestString.find(" ");
@ -123,162 +56,68 @@ namespace proxy
m_Request.method = method; m_Request.method = method;
m_Request.host = server; m_Request.host = server;
} }
void HTTPConnection::HandleWriteReply (const boost::system::error_code& ecode)
void HTTPProxyConnection::RunRequest()
{ {
Terminate (); request m_Request;
ExtractRequest(m_Request);
parseHeaders(m_Buffer, m_Request.headers);
LogPrint("Requesting ", m_Request.host, " with path ", m_Request.uri, " and method ", m_Request.method);
HandleDestinationRequest(m_Request.host, m_Request.uri);
} }
void HTTPConnection::HandleWrite (const boost::system::error_code& ecode) //void HTTPConnection::HandleDestinationRequest (const std::string& address, const std::string& uri)
{ //{
if (ecode || (m_Stream && !m_Stream->IsOpen ())) // i2p::data::IdentHash destination;
Terminate (); // std::string fullAddress;
else // data keeps coming // if (address.find (".b32.i2p") != std::string::npos)
AsyncStreamReceive (); // {
} // int li = address.find_first_of (".");
// std::string newaddress = address.substr (0, li);
// if (i2p::data::Base32ToByteStream (newaddress.c_str (), newaddress.length (), (uint8_t *)destination, 32) != 32)
// {
// LogPrint ("Invalid Base32 address ", newaddress);
// return;
// }
// fullAddress = newaddress + ".b32.i2p";
// }
// else
// {
// auto addr = i2p::data::netdb.FindAddress (address);
// if (!addr)
// {
// LogPrint ("Unknown address ", address);
// SendReply("<html>"+ i2p::proxy::itoopieImage +"<br>Unknown address " + address + "</html>");
// return;
// }
// destination = *addr;
// fullAddress = address;
// }
//
// auto leaseSet = i2p::data::netdb.FindLeaseSet (destination);
// if (!leaseSet || !leaseSet->HasNonExpiredLeases ())
// {
// i2p::data::netdb.Subscribe(destination);
// std::this_thread::sleep_for (std::chrono::seconds(10)); // wait for 10 seconds
// leaseSet = i2p::data::netdb.FindLeaseSet (destination);
// if (!leaseSet || !leaseSet->HasNonExpiredLeases ()) // still no LeaseSet
// {
// SendReply(leaseSet ? "<html>"+ i2p::proxy::itoopieImage +"<br>Leases expired</html>" : "<html>"+ i2p::proxy::itoopieImage +"LeaseSet not found</html>");
// return;
// }
// }
// if (!m_Stream)
// m_Stream = i2p::stream::CreateStream (*leaseSet);
// if (m_Stream)
// {
// std::string request = "GET " + uri + " HTTP/1.1\n Host:" + fullAddress + "\n";
// m_Stream->Send ((uint8_t *)request.c_str (), request.length (), 10);
// AsyncStreamReceive ();
// }
//}
void HTTPConnection::HandleDestinationRequest (const std::string& address, const std::string& uri)
{
i2p::data::IdentHash destination;
std::string fullAddress;
if (address.find (".b32.i2p") != std::string::npos)
{
int li = address.find_first_of (".");
std::string newaddress = address.substr (0, li);
if (i2p::data::Base32ToByteStream (newaddress.c_str (), newaddress.length (), (uint8_t *)destination, 32) != 32)
{
LogPrint ("Invalid Base32 address ", newaddress);
return;
}
fullAddress = newaddress + ".b32.i2p";
}
else
{
auto addr = i2p::data::netdb.FindAddress (address);
if (!addr)
{
LogPrint ("Unknown address ", address);
SendReply("<html>"+ i2p::proxy::itoopieImage +"<br>Unknown address " + address + "</html>");
return;
}
destination = *addr;
fullAddress = address;
}
auto leaseSet = i2p::data::netdb.FindLeaseSet (destination);
if (!leaseSet || !leaseSet->HasNonExpiredLeases ())
{
i2p::data::netdb.Subscribe(destination);
std::this_thread::sleep_for (std::chrono::seconds(10)); // wait for 10 seconds
leaseSet = i2p::data::netdb.FindLeaseSet (destination);
if (!leaseSet || !leaseSet->HasNonExpiredLeases ()) // still no LeaseSet
{
SendReply(leaseSet ? "<html>"+ i2p::proxy::itoopieImage +"<br>Leases expired</html>" : "<html>"+ i2p::proxy::itoopieImage +"LeaseSet not found</html>");
return;
}
}
if (!m_Stream)
m_Stream = i2p::stream::CreateStream (*leaseSet);
if (m_Stream)
{
std::string request = "GET " + uri + " HTTP/1.1\n Host:" + fullAddress + "\n";
m_Stream->Send ((uint8_t *)request.c_str (), request.length (), 10);
AsyncStreamReceive ();
}
}
void HTTPConnection::AsyncStreamReceive ()
{
if (m_Stream)
m_Stream->AsyncReceive (boost::asio::buffer (m_StreamBuffer, 8192),
boost::protect (boost::bind (&HTTPConnection::HandleStreamReceive, this,
boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred)),
45); // 45 seconds timeout
}
void HTTPConnection::HandleStreamReceive (const boost::system::error_code& ecode, std::size_t bytes_transferred)
{
if (bytes_transferred)
{
boost::asio::async_write (*m_Socket, boost::asio::buffer (m_StreamBuffer, bytes_transferred),
boost::bind (&HTTPConnection::HandleWrite, this, boost::asio::placeholders::error));
}
else
{
if (m_Stream && m_Stream->IsOpen ())
SendReply ("<html>"+ i2p::proxy::itoopieImage +"<br>Not responding</html>");
else
Terminate ();
}
}
void HTTPConnection::SendReply (const std::string& content)
{
m_Reply.content = content;
m_Reply.headers.resize(2);
m_Reply.headers[0].name = "Content-Length";
m_Reply.headers[0].value = boost::lexical_cast<std::string>(m_Reply.content.size());
m_Reply.headers[1].name = "Content-Type";
m_Reply.headers[1].value = "text/html";
boost::asio::async_write (*m_Socket, m_Reply.to_buffers(),
boost::bind (&HTTPConnection::HandleWriteReply, this,
boost::asio::placeholders::error));
}
HTTPProxy::HTTPProxy (int port):
m_Thread (nullptr), m_Work (m_Service),
m_Acceptor (m_Service, boost::asio::ip::tcp::endpoint (boost::asio::ip::tcp::v4(), port)),
m_NewSocket (nullptr)
{
}
HTTPProxy::~HTTPProxy ()
{
Stop ();
}
void HTTPProxy::Start ()
{
m_Thread = new std::thread (std::bind (&HTTPProxy::Run, this));
m_Acceptor.listen ();
Accept ();
}
void HTTPProxy::Stop ()
{
m_Acceptor.close();
m_Service.stop ();
if (m_Thread)
{
m_Thread->join ();
delete m_Thread;
m_Thread = nullptr;
}
}
void HTTPProxy::Run ()
{
m_Service.run ();
}
void HTTPProxy::Accept ()
{
m_NewSocket = new boost::asio::ip::tcp::socket (m_Service);
m_Acceptor.async_accept (*m_NewSocket, boost::bind (&HTTPProxy::HandleAccept, this,
boost::asio::placeholders::error));
}
void HTTPProxy::HandleAccept(const boost::system::error_code& ecode)
{
if (!ecode)
{
new HTTPConnection (m_NewSocket);
Accept ();
}
}
} }
} }

87
HTTPProxy.h
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55
HTTPServer.cpp
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@ -64,28 +64,33 @@ namespace util
if (!ecode) if (!ecode)
{ {
m_Buffer[bytes_transferred] = 0; m_Buffer[bytes_transferred] = 0;
auto address = ExtractAddress (); RunRequest();
if (address.length () > 1) // not just '/'
{
std::string uri ("/"), b32;
size_t pos = address.find ('/', 1);
if (pos == std::string::npos)
b32 = address.substr (1); // excluding leading '/' to end of line
else
{
b32 = address.substr (1, pos - 1); // excluding leading '/' to next '/'
uri = address.substr (pos); // rest of line
}
HandleDestinationRequest (b32, uri);
}
else
HandleRequest ();
} }
else if (ecode != boost::asio::error::operation_aborted) else if (ecode != boost::asio::error::operation_aborted)
Terminate (); Terminate ();
} }
void HTTPConnection::RunRequest ()
{
auto address = ExtractAddress ();
if (address.length () > 1) // not just '/'
{
std::string uri ("/"), b32;
size_t pos = address.find ('/', 1);
if (pos == std::string::npos)
b32 = address.substr (1); // excluding leading '/' to end of line
else
{
b32 = address.substr (1, pos - 1); // excluding leading '/' to next '/'
uri = address.substr (pos); // rest of line
}
HandleDestinationRequest (b32, uri);
}
else
HandleRequest ();
}
std::string HTTPConnection::ExtractAddress () std::string HTTPConnection::ExtractAddress ()
{ {
char * get = strstr (m_Buffer, "GET"); char * get = strstr (m_Buffer, "GET");
@ -215,7 +220,7 @@ namespace util
if (!addr) if (!addr)
{ {
LogPrint ("Unknown address ", address); LogPrint ("Unknown address ", address);
SendReply ("Unknown address"); SendReply ("<html>" + itoopieImage + "<br>Unknown address " + address + "</html>");
return; return;
} }
destination = *addr; destination = *addr;
@ -226,7 +231,7 @@ namespace util
if (i2p::data::Base32ToByteStream (address.c_str (), address.length (), (uint8_t *)destination, 32) != 32) if (i2p::data::Base32ToByteStream (address.c_str (), address.length (), (uint8_t *)destination, 32) != 32)
{ {
LogPrint ("Invalid Base32 address ", address); LogPrint ("Invalid Base32 address ", address);
SendReply ("Invalid Base32 address"); SendReply ("<html>" + itoopieImage + "<br>Invalid Base32 address");
return; return;
} }
fullAddress = address + ".b32.i2p"; fullAddress = address + ".b32.i2p";
@ -240,7 +245,7 @@ namespace util
leaseSet = i2p::data::netdb.FindLeaseSet (destination); leaseSet = i2p::data::netdb.FindLeaseSet (destination);
if (!leaseSet || !leaseSet->HasNonExpiredLeases ()) // still no LeaseSet if (!leaseSet || !leaseSet->HasNonExpiredLeases ()) // still no LeaseSet
{ {
SendReply (leaseSet ? "<html>Leases expired</html>" : "<html>LeaseSet not found</html>"); SendReply (leaseSet ? "<html>" + itoopieImage + "<br>Leases expired</html>" : "<html>" + itoopieImage + "LeaseSet not found</html>");
return; return;
} }
} }
@ -273,7 +278,7 @@ namespace util
else else
{ {
if (m_Stream && m_Stream->IsOpen ()) if (m_Stream && m_Stream->IsOpen ())
SendReply ("Not responding"); SendReply ("<html>" + itoopieImage + "<br>Not responding</html>");
else else
Terminate (); Terminate ();
} }
@ -341,10 +346,16 @@ namespace util
{ {
if (!ecode) if (!ecode)
{ {
new HTTPConnection (m_NewSocket); CreateConnection(m_NewSocket); // new HTTPConnection(m_NewSocket);
Accept (); Accept ();
} }
} }
void HTTPServer::CreateConnection(boost::asio::ip::tcp::socket * m_NewSocket)
{
new HTTPConnection (m_NewSocket);
}
} }
} }

56
HTTPServer.h
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