/*
device.c -- raw socket
- Copyright (C) 2002 Ivo Timmermans <ivo@o2w.nl>,
- 2002 Guus Sliepen <guus@sliepen.eu.org>
+ Copyright (C) 2002-2005 Ivo Timmermans <ivo@tinc-vpn.org>,
+ 2002-2005 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 1.1.2.4 2002/09/10 21:29:42 guus Exp $
+ $Id$
*/
-#include "config.h"
-
-#include <stdio.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <net/if.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
+#include "system.h"
+
#include <netpacket/packet.h>
-#include <net/ethernet.h>
-#include <utils.h>
#include "conf.h"
#include "net.h"
-#include "subnet.h"
-
-#include "system.h"
+#include "logger.h"
+#include "utils.h"
+#include "route.h"
int device_fd = -1;
-int device_type;
char *device;
-char *interface;
+char *iface;
char ifrname[IFNAMSIZ];
char *device_info;
-int device_total_in = 0;
-int device_total_out = 0;
-
-extern subnet_t mymac;
+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)
{
struct ifreq ifr;
struct sockaddr_ll sa;
cp();
if(!get_config_string
- (lookup_config(config_tree, "Interface"), &interface))
- interface = "eth0";
+ (lookup_config(config_tree, "Interface"), &iface))
+ iface = "eth0";
if(!get_config_string(lookup_config(config_tree, "Device"), &device))
- device = interface;
+ device = iface;
device_info = _("raw socket");
if((device_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) < 0) {
- syslog(LOG_ERR, _("Could not open %s: %s"), device_info,
+ logger(LOG_ERR, _("Could not open %s: %s"), device_info,
strerror(errno));
- return -1;
+ return false;
}
memset(&ifr, 0, sizeof(ifr));
- strncpy(ifr.ifr_ifrn.ifrn_name, interface, IFNAMSIZ);
+ strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
if(ioctl(device_fd, SIOCGIFINDEX, &ifr)) {
close(device_fd);
- syslog(LOG_ERR, _("Can't find interface %s: %s"), interface,
+ logger(LOG_ERR, _("Can't find interface %s: %s"), iface,
strerror(errno));
- return -1;
+ return false;
}
memset(&sa, '0', sizeof(sa));
sa.sll_ifindex = ifr.ifr_ifindex;
if(bind(device_fd, (struct sockaddr *) &sa, (socklen_t) sizeof(sa))) {
- syslog(LOG_ERR, _("Could not bind to %s: %s"), device, strerror(errno));
- return -1;
+ logger(LOG_ERR, _("Could not bind %s to %s: %s"), device, iface, strerror(errno));
+ return false;
}
- /* Set default MAC address for ethertap devices */
- mymac.type = SUBNET_MAC;
- mymac.net.mac.address.x[0] = 0xfe;
- mymac.net.mac.address.x[1] = 0xfd;
- mymac.net.mac.address.x[2] = 0x00;
- mymac.net.mac.address.x[3] = 0x00;
- mymac.net.mac.address.x[4] = 0x00;
- mymac.net.mac.address.x[5] = 0x00;
-
- 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"), packet->len,
+ 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, _("Can't write to %s %s: %s"), device_info, device,
+ 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)
{
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);
}
projects / tinc / blobdiff