include/socket.h File Reference

#include <arpa/inet.h>
#include "class.h"
#include "logger.h"

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Data Structures
struct	Sock
Functions
void	socketConnect (Sock this, const char *addr, char(*)[16])
void	socketListen (Sock this, int backlog)
Sock	socketAccept (Sock this, char(*remoteAddr)[16])

---

Detailed Description

Abstraction layer above BSD sockets. Capsules and simplifies connect accept and listen.

Author:

Georg Hopp

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/>.

Definition in file socket.h.

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Function Documentation

Sock socketAccept	(	Sock	this,
		char(*)	remoteAddr[16]
	)

Todo:

Uhh, this is bad. we open a new socket additionally to the one we get from the accept call. i have to change the socket constructor to be able to create the data structure without creation of a socket at all. For now i simply close the socket here.... :D

Definition at line 31 of file accept.c.

{
    Sock         sock;   // Socket for client
    unsigned int len;    // Length of client address data structure

    // Set the size of the in-out parameter
    len = sizeof(this->addr);

        sock = new(Sock, this->log, -1);

    // Wait for a client to connect
    sock->handle = accept(this->handle, (struct sockaddr *) &(sock->addr), &len);
    if (-1 == sock->handle) {
        loggerLog(this->log, LOGGER_WARNING,
                "error accepting connection: %s", strerror(errno));
    } else {
                strcpy(*remoteAddr, inet_ntoa((sock->addr).sin_addr));

        loggerLog(this->log, LOGGER_INFO,
                                "handling client %s\n", inet_ntoa((sock->addr).sin_addr));
    }

    return sock;
}

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void socketConnect	(	Sock	this,
		const char *	addr,
		char(*)	[16]
	)

Definition at line 32 of file connect.c.

{
        inet_pton(AF_INET, addr, &((this->addr).sin_addr));
    (this->addr).sin_family = AF_INET;           // Internet address family
    (this->addr).sin_port   = htons(this->port); // Local port

        if (-1 == connect(
                                this->handle,
                                (struct sockaddr*) &(this->addr),
                                sizeof(this->addr)))
        {
        loggerLog(this->log, LOGGER_CRIT,
                "error connection socket: %s - service terminated",
                strerror(errno));
        exit(EXIT_FAILURE);
    } else {
                strcpy(*remoteAddr, inet_ntoa((this->addr).sin_addr));

        loggerLog(this->log, LOGGER_INFO,
                                "handling connection %s\n", inet_ntoa((this->addr).sin_addr));
    }
}

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void socketListen	(	Sock	this,
		int	backlog
	)

Bind to the local address

Mark the socket so it will listen for incoming connections

Definition at line 32 of file listen.c.

{
    (this->addr).sin_family      = AF_INET;           // Internet address family
    (this->addr).sin_addr.s_addr = htonl(INADDR_ANY); // Any incoming interface
    (this->addr).sin_port        = htons(this->port); // Local port

    if (-1 == bind(this->handle, (struct sockaddr *) &(this->addr), sizeof(this->addr))) {
        loggerLog(this->log, LOGGER_CRIT,
                "error binding socket: %s - service terminated",
                strerror(errno));
        exit(EXIT_FAILURE);
    }

    if (-1 == listen(this->handle, backlog)) {
        loggerLog(this->log, LOGGER_CRIT,
                "error binding socket: %s - service terminated",
                strerror(errno));
        exit(EXIT_FAILURE);
    }
}

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