/usr/include/dclib-0.3/dclib/core/csocket.h is in libdc-dev 0.3.24~svn3121-1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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csocket.h - description
-------------------
begin : Sat Oct 6 2001
copyright : (C) 2001-2003 by Mathias Küster
email : mathen@users.berlios.de
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef CSOCKET_H
#define CSOCKET_H
/**
*@author Mathias Küster
*
* A network socket, including SSL support.
*
* On WIN32 this class will not work until CSocket::SysInit() has been
* called, normally by dclibInitDepLibs(), but that should
* be better than initialising WinSock2 every time
* a CSocket is created.
*/
#include <dclib/dcos.h>
#include <dclib/dclib-ssl-use.h>
#include <dclib/core/cstring.h>
#include <dclib/core/ctraffic.h>
#if DCLIB_USES_OPENSSL == 1
#include <openssl/ssl.h>
#include <openssl/err.h>
#else
/* this may also work for SSL builds */
typedef struct ssl_st SSL;
typedef struct ssl_ctx_st SSL_CTX;
#endif
enum eSocketType {
estTCP=0,
estUDP
};
/*
* esmSSLCLIENT and esmSSLSERVER are the old values for
* changing to SSL mode during the NMDC protocol exchange
*
* esmFULLSSLCLIENT and esmFULLSSLSERVER are the new values
* where the socket starts in SSL mode
*/
enum eSocketMode {
esmSOCKET=0,
esmSSLCLIENT,
esmSSLSERVER,
esmFULLSSLCLIENT,
esmFULLSSLSERVER
};
enum eSocketLog {
eslNONE=0,
eslSEND,
eslRECV,
eslBOTH
};
enum eConnectState {
ecsSUCCESS=0,
ecsAGAIN,
ecsERROR
};
class CSocket {
public:
/** */
CSocket( eSocketType type = estTCP );
/** */
virtual ~CSocket();
/** */
static CTraffic m_Traffic;
/** */
static eSocketLog m_eSocketLog;
/** */
eConnectState Connect( CString Host, bool iAsync );
/** */
eConnectState Connect( CString Host, int Port, bool iAsync );
/** */
int IsConnect();
/** */
int Disconnect();
/** */
int Read( char * buffer, int len, int sec_timeout=0, int usec_timeout=0 );
/** */
int Write( const unsigned char * buffer, int len, int sec_timeout=0, int usec_timeout=0 );
/** */
int GetFreeSendBufferSize();
/** */
int SetSocket( int handle, eSocketType sockettype );
/** */
int Accept();
/** */
int Listen( int port, CString ip = CString() );
/** */
bool GetPeerName( CString * host, int * port );
/** */
CString GetSocketError() { return sError; };
/** */
virtual bool ChangeSocketMode( eSocketMode mode, CString cert = CString(), CString key = CString() );
/** Get SSL version */
CString GetSSLVersion();
/** Get SSL cipher */
CString GetSSLCipher();
/** Verify peer SSL certificate */
CString VerifyPeerCertificate();
/** */
eSocketMode GetSocketMode() { return m_eSocketMode; }
/** Gets the IP address with port of most recent connection attempt */
CString GetResolvedIP() const { return m_sIP; }
/**
* Initialises WinSock2 DLL, does nothing on non WIN32.
* Returns 0 if successful or some other WSA error code otherwise.
* Should be called once on program startup.
*/
static int SysInit();
/**
* Shuts down WinSock2 DLL, does nothing on non WIN32.
* Returns 0 if successful or some other WSA error code otherwise.
* Should be called once on program shutdown.
*/
static int SysDeInit();
protected:
/** */
eSocketType SocketType;
/** */
SOCKET iHandle;
/** */
eSocketMode m_eSocketMode;
/** */
SSL_CTX * m_pCTX;
/** */
SSL * m_pSSL;
private:
/** */
int SocketError();
/** */
CString ext_strerror( int err );
/** */
CString sError;
/** the IP address and port of the most recent connection attempt */
CString m_sIP;
};
#endif
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