/*
device.c -- raw socket
- Copyright (C) 2002-2003 Ivo Timmermans <ivo@o2w.nl>,
- 2002-2003 Guus Sliepen <guus@sliepen.eu.org>
+ Copyright (C) 2002-2004 Ivo Timmermans <ivo@tinc-vpn.org>,
+ 2002-2004 Guus Sliepen <guus@tinc-vpn.org>
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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: device.c,v 1.1.2.7 2003/07/12 17:41:48 guus Exp $
+ $Id$
*/
#include "config.h"
#include "system.h"
int device_fd = -1;
-int device_type;
char *device;
char *interface;
char ifrname[IFNAMSIZ];
int device_total_in = 0;
int device_total_out = 0;
-int setup_device(void)
+bool setup_device(void)
{
struct ifreq ifr;
struct sockaddr_ll sa;
if((device_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) < 0) {
logger(LOG_ERR, _("Could not open %s: %s"), device_info,
strerror(errno));
- return -1;
+ return false;
}
memset(&ifr, 0, sizeof(ifr));
close(device_fd);
logger(LOG_ERR, _("Can't find interface %s: %s"), interface,
strerror(errno));
- return -1;
+ return false;
}
memset(&sa, '0', sizeof(sa));
if(bind(device_fd, (struct sockaddr *) &sa, (socklen_t) sizeof(sa))) {
logger(LOG_ERR, _("Could not bind to %s: %s"), device, strerror(errno));
- return -1;
+ return false;
}
logger(LOG_INFO, _("%s is a %s"), device, device_info);
- return 0;
+ return true;
}
void close_device(void)
close(device_fd);
}
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
{
int lenin;
if((lenin = read(device_fd, packet->data, MTU)) <= 0) {
logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
device, strerror(errno));
- return -1;
+ return false;
}
packet->len = lenin;
ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
device_info);
- }
- return 0;
+ return true;
}
-int write_packet(vpn_packet_t *packet)
+bool write_packet(vpn_packet_t *packet)
{
cp();
if(write(device_fd, packet->data, packet->len) < 0) {
logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device,
strerror(errno));
- return -1;
+ return false;
}
device_total_out += packet->len;
- return 0;
+ return true;
}
void dump_device_stats(void)