cachesyncd/unixsock.c

/***************************************************************************
 *   Copyright (C) 06/2006 by Olaf Rempel                                  *
 *   razzor@kopf-tisch.de                                                  *
 *                                                                         *
 *   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 2 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, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/stat.h>

#include "configfile.h"
#include "logging.h"

#define DEFAULT_SOCKET "/tmp/cachesyncd"

int sock_init()
{
	struct sockaddr_un addr;

	int sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
	if (sockfd == -1) {
		log_print(LOG_ERROR, "unixsock: socket()");
		return -1;
	}

	char *filename = config_get_string("global", "socket", DEFAULT_SOCKET);

	addr.sun_family = AF_UNIX;
	strncpy(addr.sun_path, filename, sizeof(addr.sun_path));
	int len = sizeof(addr.sun_family) + strlen(addr.sun_path);

	mode_t old_umask = umask(0077);
	int ret = bind(sockfd, (struct sockaddr *) &addr, len);
	umask(old_umask);

	if (ret == -1) {
		log_print(LOG_ERROR, "unixsock: bind()");
		close(sockfd);
		return -1;
	}

	ret = listen(sockfd, 5);
	if (ret == -1) {
		log_print(LOG_ERROR, "unixsock: listen()");
		close(sockfd);
		return -1;
	}

	return sockfd;
}

void sock_close(int sockfd)
{
	char *filename;

	close(sockfd);

	filename = config_get_string("global", "socket", DEFAULT_SOCKET);
	if (unlink(filename) == -1)
		log_print(LOG_WARN, "unixsock: unlink()");
}