+++ /dev/null
-/*
- device.c -- raw socket
- Copyright (C) 2002-2005 Ivo Timmermans,
- 2002-2009 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
- 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.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
-
-#include "system.h"
-
-#include <netpacket/packet.h>
-
-#include "conf.h"
-#include "device.h"
-#include "net.h"
-#include "logger.h"
-#include "utils.h"
-#include "route.h"
-#include "xalloc.h"
-
-int device_fd = -1;
-char *device = NULL;
-char *iface = NULL;
-static char ifrname[IFNAMSIZ];
-static char *device_info;
-
-static uint64_t device_total_in = 0;
-static uint64_t device_total_out = 0;
-
-bool setup_device(void) {
- struct ifreq ifr;
- struct sockaddr_ll sa;
-
- if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
- iface = xstrdup("eth0");
-
- if(!get_config_string(lookup_config(config_tree, "Device"), &device))
- device = xstrdup(iface);
-
- device_info = "raw socket";
-
- 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 false;
- }
-
- memset(&ifr, 0, sizeof(ifr));
- strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
- if(ioctl(device_fd, SIOCGIFINDEX, &ifr)) {
- close(device_fd);
- logger(LOG_ERR, "Can't find interface %s: %s", iface,
- strerror(errno));
- return false;
- }
-
- memset(&sa, '0', sizeof(sa));
- sa.sll_family = AF_PACKET;
- sa.sll_protocol = htons(ETH_P_ALL);
- sa.sll_ifindex = ifr.ifr_ifindex;
-
- if(bind(device_fd, (struct sockaddr *) &sa, (socklen_t) sizeof(sa))) {
- logger(LOG_ERR, "Could not bind %s to %s: %s", device, iface, strerror(errno));
- return false;
- }
-
- logger(LOG_INFO, "%s is a %s", device, device_info);
-
- return true;
-}
-
-void close_device(void) {
- close(device_fd);
-
- free(device);
- free(iface);
-}
-
-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 false;
- }
-
- packet->len = lenin;
-
- device_total_in += packet->len;
-
- ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", packet->len,
- device_info);
-
- return true;
-}
-
-bool write_packet(vpn_packet_t *packet) {
- 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) {
- logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device,
- strerror(errno));
- return false;
- }
-
- device_total_out += packet->len;
-
- return true;
-}
-
-void dump_device_stats(void) {
- logger(LOG_DEBUG, "Statistics for %s %s:", device_info, device);
- logger(LOG_DEBUG, " total bytes in: %10"PRIu64, device_total_in);
- logger(LOG_DEBUG, " total bytes out: %10"PRIu64, device_total_out);
-}