socket.c

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/**
 * \file
 *
 * \author  Georg Hopp
 *
 * \copyright
 * Copyright © 2012  Georg Hopp
 *
 * 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <errno.h>
#include <stdlib.h>
#include <unistd.h>

#include "socket.h"
#include "logger.h"
#include "class.h"

static
int
socketCtor(void * _this, va_list * params)
{
    Sock this = _this;
    int reUse   = 1;     //! \todo make this configurable
    int port;

    this->log  = va_arg(* params, Logger);
    port       = va_arg(* params, int);

    //! if port is -1 do not initialize the socket. (Used with accept)
    if (-1 == port) {
        return 0;
    } else {
        this->port = port;
    }

    //! Create socket for incoming connections
    if (-1 == (this->handle = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP))) {
        loggerLog(this->log, LOGGER_CRIT,
                "error opening socket: %s - service terminated",
                strerror(errno));
        return -1;
    }

    //! Make the socket REUSE a TIME_WAIT socket
    setsockopt(this->handle, SOL_SOCKET, SO_REUSEADDR, &reUse, sizeof(reUse));

    return 0;
}

static
void
socketDtor(void * _this)
{
    Sock this = _this;

    if (STDERR_FILENO < this->handle) {
        shutdown(this->handle, SHUT_RDWR);
        close(this->handle);
    }
}

INIT_IFACE(Class, socketCtor, socketDtor, NULL);
CREATE_CLASS(Sock, NULL, IFACE(Class));

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