/*
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,
+ 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
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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id: device.c,v 1.1.2.1 2002/07/18 14:30:45 guus Exp $
+ 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 "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 "device.h"
#include "net.h"
-#include "subnet.h"
-
-#include "system.h"
+#include "logger.h"
+#include "utils.h"
+#include "route.h"
+#include "xalloc.h"
int device_fd = -1;
-int device_type;
-char *device;
-char *interface;
-char ifrname[IFNAMSIZ];
-char *device_info;
-
-int device_total_in = 0;
-int device_total_out = 0;
-
-extern subnet_t mymac;
-
-/*
- open the local ethertap device
-*/
-int setup_device(void)
-{
- struct ifreq ifr;
- struct sockaddr_ll sa;
-cp
- if(!get_config_string(lookup_config(config_tree, "Interface"), &interface))
- interface = "eth0";
-
- if(!get_config_string(lookup_config(config_tree, "Device"), &device))
- device = interface;
-
- device_info = _("raw socket");
-cp
- if((device_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) < 0)
- {
- syslog(LOG_ERR, _("Could not open %s: %s"), device_info, strerror(errno));
- return -1;
- }
-
- memset(&ifr, 0, sizeof(ifr));
- strncpy(ifr.ifr_ifrn.ifrn_name, interface, IFNAMSIZ);
- if(ioctl(device_fd, SIOCGIFINDEX, &ifr))
- {
- close(device_fd);
- syslog(LOG_ERR, _("Can't find interface %s: %s"), interface, strerror(errno));
- return -1;
- }
-
- 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)))
- {
- syslog(LOG_ERR, _("Could not bind to %s: %s"), device, strerror(errno));
- return -1;
- }
-cp
- /* 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);
-cp
- return 0;
+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)
-{
-cp
- close(device_fd);
+void close_device(void) {
+ close(device_fd);
+
+ free(device);
+ free(iface);
}
-/*
- read, encrypt and send data that is
- available through the ethertap device
-*/
-int read_packet(vpn_packet_t *packet)
-{
- int lenin;
-cp
+bool read_packet(vpn_packet_t *packet) {
+ int lenin;
- if((lenin = read(device_fd, packet->data, MTU)) <= 0)
- {
- syslog(LOG_ERR, _("Error while reading from %s %s: %s"), device_info, device, strerror(errno));
- return -1;
- }
+ 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;
+ packet->len = lenin;
- device_total_in += packet->len;
+ device_total_in += packet->len;
- if(debug_lvl >= DEBUG_TRAFFIC)
- {
- syslog(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len, device_info);
- }
+ ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", packet->len,
+ device_info);
- return 0;
-cp
+ return true;
}
-int write_packet(vpn_packet_t *packet)
-{
-cp
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(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, strerror(errno));
- return -1;
- }
-
- device_total_out += packet->len;
-cp
- return 0;
+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)
-{
-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);
-cp
+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);
}
projects / oweals / tinc.git / blobdiff