/*
device.c -- Interaction with FreeBSD tap device
- Copyright (C) 2001-2002 Ivo Timmermans <ivo@o2w.nl>,
- 2001-2002 Guus Sliepen <guus@sliepen.eu.org>
+ Copyright (C) 2001-2004 Ivo Timmermans <ivo@tinc-vpn.org>,
+ 2001-2004 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 1.1.2.9 2003/06/11 19:28:37 guus Exp $
+ $Id$
*/
-#include "config.h"
-
-#include <stdio.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <fcntl.h>
-#include <net/if.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <string.h>
-
-#include <utils.h>
+#include "system.h"
+
#include "conf.h"
+#include "logger.h"
#include "net.h"
-#include "subnet.h"
-
-#include "system.h"
+#include "utils.h"
#define DEFAULT_DEVICE "/dev/tap0"
int device_fd = -1;
-int device_type;
char *device;
-char *interface;
+char *iface;
char *device_info;
-int device_total_in = 0;
-int device_total_out = 0;
+static int device_total_in = 0;
+static int device_total_out = 0;
-/*
- open the local ethertap device
-*/
-int setup_device(void)
+bool setup_device(void)
{
cp();
if(!get_config_string(lookup_config(config_tree, "Device"), &device))
device = DEFAULT_DEVICE;
- if(!get_config_string(lookup_config(config_tree, "Interface"), &interface))
- interface = rindex(device, '/') ? rindex(device, '/') + 1 : device;
+ if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
+ iface = rindex(device, '/') ? rindex(device, '/') + 1 : device;
if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
- syslog(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
- return -1;
+ logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
+ return false;
}
device_info = _("FreeBSD tap device");
- syslog(LOG_INFO, _("%s is a %s"), device, device_info);
+ logger(LOG_INFO, _("%s is a %s"), device, device_info);
- return 0;
+ return true;
}
void close_device(void)
close(device_fd);
}
-/*
- read, encrypt and send data that is
- available through the ethertap device
-*/
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
{
int lenin;
cp();
if((lenin = read(device_fd, packet->data, MTU)) <= 0) {
- syslog(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
+ logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
device, strerror(errno));
- return -1;
+ return false;
}
packet->len = lenin;
device_total_in += packet->len;
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_DEBUG, _("Read packet of %d bytes from %s"),
+ 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(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_DEBUG, _("Writing packet of %d bytes to %s"),
+ ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"),
packet->len, device_info);
if(write(device_fd, packet->data, packet->len) < 0) {
- syslog(LOG_ERR, _("Error while writing to %s %s: %s"), device_info,
+ logger(LOG_ERR, _("Error while writing to %s %s: %s"), device_info,
device, strerror(errno));
- return -1;
+ return false;
}
device_total_out += packet->len;
+
+ return true;
}
void dump_device_stats(void)
{
cp();
- syslog(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);
- syslog(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);
- syslog(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out);
+ logger(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);
+ logger(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);
+ logger(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out);
}