SecureTCPSocket.h

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#pragma once
 
#include <openssl/x509.h>
 
#include <string>
#include <vector>
 
#include <minitscript/minitscript.h>
#include <minitscript/os/network/fwd-minitscript.h>
#include <minitscript/os/network/TCPSocket.h>
#include <minitscript/os/threading/Mutex.h>
 
using std::string;
using std::vector;
 
using minitscript::os::network::TCPSocket;
using minitscript::os::threading::Mutex;
 
/**
 * Class representing a secure TCP socket
 * @author Andreas Drewke
 */
class minitscript::os::network::SecureTCPSocket : public TCPSocket {
    public:
        // forbid class copy
        _FORBID_CLASS_COPY(SecureTCPSocket)
 
        /**
         * Public Constructor
         */
        SecureTCPSocket();
 
        /**
         * Public destructor
         */
        virtual ~SecureTCPSocket();
 
        /**
         * Connects a socket to given remote IP and port
         * @param hostname hostname
         * @param port port
         * @throws minitscript::os::network::NetworkSocketException
         */
        void connect(const string& hostname, const unsigned int port);
 
        /**
         * Reads up to "bytes" bytes from socket
         * @param buf buffer to write to
         * @param bytes bytes to receive
         * @throws minitscript::os::network::NetworkIOException
         * @return bytes read
         */
        size_t read(void* buf, const size_t bytes);
 
        /**
         * Writes up to "bytes" bytes to socket
         * @param buf buffer to read from
         * @param bytes bytes to send
         * @throws minitscript::os::network::NetworkIOException
         * @return bytes written
         */
        size_t write(void* buf, const size_t bytes);
 
        /**
         * shuts socket down for reading and writing
         */
        virtual void shutdown();
 
        /**
         * Closes the socket
         */
        virtual void close();
 
    private:
        /**
         * OpenSSL verify callback
         * @param preverify preverify
         * @param x509_ctx x509_ctx
         */
        static int openSSLVerifyCallback(int preverify, X509_STORE_CTX* x509_ctx);
 
        /**
         * @return OpenSSL get errors
         */
        const string openSSLGetErrors();
 
        //
        SSL* ssl = nullptr;
        SSL_CTX* ctx = nullptr;
        BIO* bio = nullptr, *out = nullptr;
};