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/*
* libjingle
* Copyright 2004--2005, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __SOCKETADAPTERS_H__
#define __SOCKETADAPTERS_H__
#include <map>
#include "talk/base/asyncsocket.h"
#include "talk/base/logging.h"
#include "talk/xmpp/xmpppassword.h" // TODO: move xmpppassword to base
namespace cricket {
///////////////////////////////////////////////////////////////////////////////
class BufferedReadAdapter : public AsyncSocketAdapter {
public:
BufferedReadAdapter(AsyncSocket* socket, size_t buffer_size);
virtual ~BufferedReadAdapter();
virtual int Send(const void *pv, size_t cb);
virtual int Recv(void *pv, size_t cb);
protected:
int DirectSend(const void *pv, size_t cb) { return AsyncSocketAdapter::Send(pv, cb); }
void BufferInput(bool on = true);
virtual void ProcessInput(char * data, size_t& len) = 0;
virtual void OnReadEvent(AsyncSocket * socket);
private:
char * buffer_;
size_t buffer_size_, data_len_;
bool buffering_;
};
///////////////////////////////////////////////////////////////////////////////
class AsyncSSLSocket : public BufferedReadAdapter {
public:
AsyncSSLSocket(AsyncSocket* socket);
virtual int Connect(const SocketAddress& addr);
protected:
virtual void OnConnectEvent(AsyncSocket * socket);
virtual void ProcessInput(char * data, size_t& len);
};
///////////////////////////////////////////////////////////////////////////////
class AsyncHttpsProxySocket : public BufferedReadAdapter {
public:
AsyncHttpsProxySocket(AsyncSocket* socket, const SocketAddress& proxy,
const std::string& username, const buzz::XmppPassword& password);
virtual ~AsyncHttpsProxySocket();
virtual int Connect(const SocketAddress& addr);
virtual SocketAddress GetRemoteAddress() const;
virtual int Close();
struct AuthContext {
std::string auth_method;
AuthContext(const std::string& auth) : auth_method(auth) { }
virtual ~AuthContext() { }
};
// 'context' is used by this function to record information between calls.
// Start by passing a null pointer, then pass the same pointer each additional
// call. When the authentication attempt is finished, delete the context.
enum AuthResult { AR_RESPONSE, AR_IGNORE, AR_CREDENTIALS, AR_ERROR };
static AuthResult Authenticate(const char * challenge, size_t len,
const SocketAddress& server,
const std::string& method, const std::string& uri,
const std::string& username, const buzz::XmppPassword& password,
AuthContext *& context, std::string& response, std::string& auth_method);
protected:
virtual void OnConnectEvent(AsyncSocket * socket);
virtual void OnCloseEvent(AsyncSocket * socket, int err);
virtual void ProcessInput(char * data, size_t& len);
void SendRequest();
void ProcessLine(char * data, size_t len);
void EndResponse();
void Error(int error);
static void ParseAuth(const char * data, size_t len, std::string& method, std::map<std::string,std::string>& args);
private:
SocketAddress proxy_, dest_;
std::string user_, headers_;
buzz::XmppPassword pass_;
size_t content_length_;
int defer_error_;
bool expect_close_;
enum ProxyState { PS_LEADER, PS_AUTHENTICATE, PS_SKIP_HEADERS, PS_ERROR_HEADERS, PS_TUNNEL_HEADERS, PS_SKIP_BODY, PS_TUNNEL, PS_WAIT_CLOSE, PS_ERROR } state_;
AuthContext * context_;
std::string unknown_mechanisms_;
};
///////////////////////////////////////////////////////////////////////////////
class AsyncSocksProxySocket : public BufferedReadAdapter {
public:
AsyncSocksProxySocket(AsyncSocket* socket, const SocketAddress& proxy,
const std::string& username, const buzz::XmppPassword& password);
virtual int Connect(const SocketAddress& addr);
virtual SocketAddress GetRemoteAddress() const;
protected:
virtual void OnConnectEvent(AsyncSocket * socket);
virtual void ProcessInput(char * data, size_t& len);
void SendHello();
void SendConnect();
void SendAuth();
void Error(int error);
private:
SocketAddress proxy_, dest_;
std::string user_;
buzz::XmppPassword pass_;
enum SocksState { SS_HELLO, SS_AUTH, SS_CONNECT, SS_TUNNEL, SS_ERROR } state_;
};
///////////////////////////////////////////////////////////////////////////////
class LoggingAdapter : public AsyncSocketAdapter {
public:
LoggingAdapter(AsyncSocket* socket, LoggingSeverity level,
const char * label);
virtual int Send(const void *pv, size_t cb);
virtual int SendTo(const void *pv, size_t cb, const SocketAddress& addr);
virtual int Recv(void *pv, size_t cb);
virtual int RecvFrom(void *pv, size_t cb, SocketAddress *paddr);
protected:
virtual void OnConnectEvent(AsyncSocket * socket);
virtual void OnCloseEvent(AsyncSocket * socket, int err);
private:
void LogMultiline(bool input, const char * data, size_t len);
LoggingSeverity level_;
std::string label_;
};
///////////////////////////////////////////////////////////////////////////////
} // namespace cricket
#endif // __SOCKETADAPTERS_H__
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