libt2n: (gerd) fixes & improvements

[libt2n] / src / server.cpp

/***************************************************************************
 *   Copyright (C) 2006 by Gerd v. Egidy                                   *
 *   gve@intra2net.com                                                     *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU Lesser General Public License version   *
 *   2.1 as published by the Free Software Foundation.                     *
 *                                                                         *
 *   This library is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU Lesser General Public License for more details.                   *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this program; if not, write to the                 *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#include "server.hxx"

namespace libt2n
{

void connection::check_timeout()
{
    if (timeout != -1 && last_action_time+timeout >= time(NULL))
        this->close();
}

void connection::reset_timeout()
{
    last_action_time=time(NULL);
}

bool connection::get_packet(std::string& data, unsigned int& conn_id)
{
    // max packet size is unsigned int

    // no size information -> no packet
    if (buffer.size() < sizeof(unsigned int))
        return false;

    unsigned int psize=*((unsigned int*)(buffer.data()));

    // enough data for one packet in buffer?
    if (buffer.size() < sizeof(unsigned int)+psize)
        return false;

    data.assign(buffer,sizeof(unsigned int),psize);
    buffer.erase(0,sizeof(unsigned int)+psize);

    return true;
}

server::~server()
{
    std::map<unsigned int, connection*>::iterator ie=connections.end();
    for(std::map<unsigned int, connection*>::iterator i=connections.begin(); i != ie; i++)
        delete i->second;
}

connection* server::get_connection(unsigned int conn_id)
{
    std::map<unsigned int, connection*>::iterator p=connections.find(conn_id);
    if (p==connections.end())
        return NULL;
    else
        return p->second;
}

void server::check_timeout()
{
    std::map<unsigned int, connection*>::iterator ie=connections.end();
    for(std::map<unsigned int, connection*>::iterator i=connections.begin(); i != ie; i++)
        i->second->check_timeout();
}

void server::fill_connection_buffers(void)
{
    std::map<unsigned int, connection*>::iterator ie=connections.end();
    for(std::map<unsigned int, connection*>::iterator i=connections.begin(); i != ie; i++)
        if (!i->second->is_closed())
            i->second->fill_buffer();
}

bool server::get_packet(std::string& data, unsigned int& conn_id)
{
    // todo: this is somehow unfair: the first connections in the map get checked more
    // often than the others and can thus block them out

    std::map<unsigned int, connection*>::iterator ie=connections.end();
    for(std::map<unsigned int, connection*>::iterator i=connections.begin(); i != ie; i++)
        if (i->second->get_packet(data,conn_id))
            return true;
}

void server::log(log_level_values level, const char* message)
{
    if (logstream && level >= log_level)
        (*logstream) << message << std::endl;
}

};