/* dtkDistributedUnixServerSocket.cpp ---
 *
 * Author: Julien Wintz
 * Copyright (C) 2008 - Julien Wintz, Inria.
 * Created: Thu May 26 11:03:52 2011 (+0200)
 * Version: $Id: 96c9527833a8cd17ae6c7c4676a645e5eabf106b $
 * Last-Updated: Thu May 26 11:04:58 2011 (+0200)
 *           By: Julien Wintz
 *     Update #: 7
 */

/* Commentary:
 *
 */

/* Change log:
 *
 */

#include "dtkDistributedUnixServerSocket.h"

#include <sys/types.h>
#include <sys/un.h>
#include <sys/socket.h>
#include <string.h>
#include <unistd.h>

#ifndef SUN_LEN
#define SUN_LEN(ptr) ((size_t)(((struct sockaddr_un *) 0)->sun_path) \
                      +strlen ((ptr)->sun_path))
#endif

dtkDistributedUnixServerSocket::dtkDistributedUnixServerSocket(const QString& path, QObject *parent) : QTcpServer(parent)
{
    setPath(path);
}

dtkDistributedUnixServerSocket::dtkDistributedUnixServerSocket(QObject *parent) : QTcpServer(parent)
{

}

void dtkDistributedUnixServerSocket::setPath(const QString& path)
{
    path_.clear();

    int sock = ::socket(PF_UNIX, SOCK_STREAM, 0);

    if (sock != -1) {
        struct sockaddr_un addr;
        ::memset(&addr, 0, sizeof(struct sockaddr_un));
        addr.sun_family = AF_UNIX;
        ::unlink(path.toLatin1().constData()); // ### This might need to be changed
        unsigned int pathlen = strlen(path.toLatin1().constData());

        if (pathlen > sizeof(addr.sun_path)) pathlen = sizeof(addr.sun_path);

        ::memcpy(addr.sun_path, path.toLatin1().constData(), pathlen);

        if ((::bind(sock, (struct sockaddr *)&addr, SUN_LEN(&addr)) != -1) &&
                (::listen(sock, 5) != -1)) {
            setSocketDescriptor(sock);
            path_ = path;
        }
    }
}

void dtkDistributedUnixServerSocket::close(void)
{
    QTcpServer::close();

    if (!path_.isEmpty()) {
        ::unlink(path_.toLatin1().constData());
        path_.clear();
    }
}

// /////////////////////////////////////////////////////////////////
// Credits
// /////////////////////////////////////////////////////////////////

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