none.hpp

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/*
 * Copyright (c) 2015, Peter Thorson. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of the WebSocket++ Project nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 PETER THORSON 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 WEBSOCKETPP_TRANSPORT_SECURITY_NONE_HPP
#define WEBSOCKETPP_TRANSPORT_SECURITY_NONE_HPP

#include <websocketpp/uri.hpp>

#include <websocketpp/transport/base/connection.hpp>
#include <websocketpp/transport/asio/security/base.hpp>

#include <websocketpp/common/asio.hpp>
#include <websocketpp/common/memory.hpp>

#include <sstream>
#include <string>

namespace websocketpp {
namespace transport {
namespace asio {
namespace basic_socket {

typedef lib::function<void(connection_hdl,lib::asio::ip::tcp::socket&)>
    socket_init_handler;


class connection : public lib::enable_shared_from_this<connection> {
public:
    typedef connection type;
    typedef lib::shared_ptr<type> ptr;

    typedef lib::asio::io_service* io_service_ptr;
    typedef lib::shared_ptr<lib::asio::io_service::strand> strand_ptr;
    typedef lib::asio::ip::tcp::socket socket_type;
    typedef lib::shared_ptr<socket_type> socket_ptr;

    explicit connection() : m_state(UNINITIALIZED) {
        //std::cout << "transport::asio::basic_socket::connection constructor"
        //          << std::endl;
    }

    ptr get_shared() {
        return shared_from_this();
    }


    bool is_secure() const {
        return false;
    }


    void set_socket_init_handler(socket_init_handler h) {
        m_socket_init_handler = h;
    }


    lib::asio::ip::tcp::socket & get_socket() {
        return *m_socket;
    }


    lib::asio::ip::tcp::socket & get_next_layer() {
        return *m_socket;
    }


    lib::asio::ip::tcp::socket & get_raw_socket() {
        return *m_socket;
    }


    std::string get_remote_endpoint(lib::error_code & ec) const {
        std::stringstream s;

        lib::asio::error_code aec;
        lib::asio::ip::tcp::endpoint ep = m_socket->remote_endpoint(aec);

        if (aec) {
            ec = error::make_error_code(error::pass_through);
            s << "Error getting remote endpoint: " << aec
               << " (" << aec.message() << ")";
            return s.str();
        } else {
            ec = lib::error_code();
            s << ep;
            return s.str();
        }
    }
protected:

    lib::error_code init_asio (io_service_ptr service, strand_ptr, bool)
    {
        if (m_state != UNINITIALIZED) {
            return socket::make_error_code(socket::error::invalid_state);
        }

        m_socket = lib::make_shared<lib::asio::ip::tcp::socket>(
            lib::ref(*service));

        m_state = READY;

        return lib::error_code();
    }


    void set_uri(uri_ptr) {}


    void pre_init(init_handler callback) {
        if (m_state != READY) {
            callback(socket::make_error_code(socket::error::invalid_state));
            return;
        }

        if (m_socket_init_handler) {
            m_socket_init_handler(m_hdl,*m_socket);
        }

        m_state = READING;

        callback(lib::error_code());
    }


    void post_init(init_handler callback) {
        callback(lib::error_code());
    }


    void set_handle(connection_hdl hdl) {
        m_hdl = hdl;
    }


    lib::asio::error_code cancel_socket() {
        lib::asio::error_code ec;
        m_socket->cancel(ec);
        return ec;
    }

    void async_shutdown(socket::shutdown_handler h) {
        lib::asio::error_code ec;
        m_socket->shutdown(lib::asio::ip::tcp::socket::shutdown_both, ec);
        h(ec);
    }

    lib::error_code get_ec() const {
        return lib::error_code();
    }


    template <typename ErrorCodeType>
    lib::error_code translate_ec(ErrorCodeType) {
        // We don't know any more information about this error so pass through
        return make_error_code(transport::error::pass_through);
    }
    
    lib::error_code translate_ec(lib::error_code ec) {
        // We don't know any more information about this error, but the error is
        // the same type as the one we are translating to, so pass through
        // untranslated.
        return ec;
    }
private:
    enum state {
        UNINITIALIZED = 0,
        READY = 1,
        READING = 2
    };

    socket_ptr          m_socket;
    state               m_state;

    connection_hdl      m_hdl;
    socket_init_handler m_socket_init_handler;
};


class endpoint {
public:
    typedef endpoint type;

    typedef connection socket_con_type;
    typedef socket_con_type::ptr socket_con_ptr;

    explicit endpoint() {}


    bool is_secure() const {
        return false;
    }


    void set_socket_init_handler(socket_init_handler h) {
        m_socket_init_handler = h;
    }
protected:

    lib::error_code init(socket_con_ptr scon) {
        scon->set_socket_init_handler(m_socket_init_handler);
        return lib::error_code();
    }
private:
    socket_init_handler m_socket_init_handler;
};

} // namespace basic_socket
} // namespace asio
} // namespace transport
} // namespace websocketpp

#endif // WEBSOCKETPP_TRANSPORT_SECURITY_NONE_HPP