/*
device.c -- Interaction with Solaris tun device
- Copyright (C) 2001 Ivo Timmermans <itimmermans@bigfoot.com>,
- 2001 Guus Sliepen <guus@sliepen.warande.net>
+ 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 1.1.2.1 2001/10/12 15:33:21 guus Exp $
+ $Id$
*/
-#include <sys/sockio.h>
+
+#include "system.h"
+
#include <sys/stropts.h>
+#include <sys/sockio.h>
#include <net/if_tun.h>
+#include "conf.h"
+#include "logger.h"
+#include "net.h"
+#include "utils.h"
+
#define DEFAULT_DEVICE "/dev/tun"
int device_fd = -1;
-int device_type;
-char *device_fname;
-char *device_info;
+char *device = NULL;
+char *iface = NULL;
+char *device_info = NULL;
+
+static int device_total_in = 0;
+static int device_total_out = 0;
+
+bool setup_device(void)
+{
+ int ip_fd = -1, if_fd = -1;
+ int ppa;
+ char *ptr;
+
+ cp();
+
+ if(!get_config_string(lookup_config(config_tree, "Device"), &device))
+ device = DEFAULT_DEVICE;
+
+ if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
+ logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
+ return false;
+ }
+
+ ppa = 0;
+
+ ptr = device;
+ while(*ptr && !isdigit((int) *ptr))
+ ptr++;
+ ppa = atoi(ptr);
+
+ if((ip_fd = open("/dev/ip", O_RDWR, 0)) < 0) {
+ logger(LOG_ERR, _("Could not open /dev/ip: %s"), strerror(errno));
+ return false;
+ }
+
+ /* Assign a new PPA and get its unit number. */
+ if((ppa = ioctl(device_fd, TUNNEWPPA, ppa)) < 0) {
+ logger(LOG_ERR, _("Can't assign new interface: %s"), strerror(errno));
+ return false;
+ }
+
+ if((if_fd = open(device, O_RDWR, 0)) < 0) {
+ logger(LOG_ERR, _("Could not open %s twice: %s"), device,
+ strerror(errno));
+ return false;
+ }
-int device_total_in = 0;
-int device_total_out = 0;
+ if(ioctl(if_fd, I_PUSH, "ip") < 0) {
+ logger(LOG_ERR, _("Can't push IP module: %s"), strerror(errno));
+ return false;
+ }
-int setup_device(void)
+ /* Assign ppa according to the unit number returned by tun device */
+ if(ioctl(if_fd, IF_UNITSEL, (char *) &ppa) < 0) {
+ logger(LOG_ERR, _("Can't set PPA %d: %s"), ppa, strerror(errno));
+ return false;
+ }
+
+ if(ioctl(ip_fd, I_LINK, if_fd) < 0) {
+ logger(LOG_ERR, _("Can't link TUN device to IP: %s"), strerror(errno));
+ return false;
+ }
+
+ if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
+ asprintf(&iface, "tun%d", ppa);
+
+ device_info = _("Solaris tun device");
+
+ logger(LOG_INFO, _("%s is a %s"), device, device_info);
+
+ return true;
+}
+
+void close_device(void)
+{
+ cp();
+
+ close(device_fd);
+}
+
+bool read_packet(vpn_packet_t *packet)
{
- int ip_fd = -1, if_fd = -1;
- int ppa;
- char *ptr;
-
-cp
- if(!get_config_string(lookup_config(config_tree, "Device"), &device_fname)))
- device_fname = DEFAULT_DEVICE;
-
-cp
- if((device_fd = open(device_fname, O_RDWR | O_NONBLOCK)) < 0)
- {
- syslog(LOG_ERR, _("Could not open %s: %m"), device_fname);
- return -1;
- }
-cp
- ppa = 0;
-
- ptr = fname;
- while(*ptr && !isdigit((int)*ptr)) ptr++;
- ppa = atoi(ptr);
-
- if( (ip_fd = open("/dev/ip", O_RDWR, 0)) < 0){
- syslog(LOG_ERR, _("Could not open /dev/ip: %m"));
- return -1;
- }
-
- /* Assign a new PPA and get its unit number. */
- if( (ppa = ioctl(fd, TUNNEWPPA, ppa)) < 0){
- syslog(LOG_ERR, _("Can't assign new interface: %m"));
- return -1;
- }
-
- if( (if_fd = open(fname, O_RDWR, 0)) < 0){
- syslog(LOG_ERR, _("Could not open %s twice: %m"), fname);
- return -1;
- }
-
- if(ioctl(if_fd, I_PUSH, "ip") < 0){
- syslog(LOG_ERR, _("Can't push IP module: %m"));
- return -1;
- }
-
- /* Assign ppa according to the unit number returned by tun device */
- if(ioctl(if_fd, IF_UNITSEL, (char *)&ppa) < 0){
- syslog(LOG_ERR, _("Can't set PPA %d: %m"), ppa);
- return -1;
- }
-
- if(ioctl(ip_fd, I_LINK, if_fd) < 0){
- syslog(LOG_ERR, _("Can't link TUN device to IP: %m"));
- return -1;
- }
-
- device_info = _("Solaris tun device");
-
- /* 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_fname, device_info);
-cp
- return 0;
+ int lenin;
+
+ cp();
+
+ if((lenin = read(device_fd, packet->data + 14, MTU - 14)) <= 0) {
+ logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
+ device, strerror(errno));
+ return false;
+ }
+
+ switch(packet->data[14] >> 4) {
+ case 4:
+ packet->data[12] = 0x08;
+ packet->data[13] = 0x00;
+ break;
+ case 6:
+ packet->data[12] = 0x86;
+ packet->data[13] = 0xDD;
+ break;
+ default:
+ ifdebug(TRAFFIC) logger(LOG_ERR,
+ _ ("Unknown IP version %d while reading packet from %s %s"),
+ packet->data[14] >> 4, device_info, device);
+ return false;
+ }
+
+ packet->len = lenin + 14;
+
+ device_total_in += packet->len;
+
+ ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
+ device_info);
+
+ return true;
}
-#ifdef HAVE_SOLARIS
- if((lenin = read(tap_fd, vp.data + 14, MTU)) <= 0)
- {
- syslog(LOG_ERR, _("Error while reading from tun device: %m"));
- return;
- }
- memcpy(vp.data, mymac.net.mac.address.x, 6);
- memcpy(vp.data + 6, mymac.net.mac.address.x, 6);
- vp.data[12] = 0x08;
- vp.data[13] = 0x00;
- vp.len = lenin + 14;
-#else
-
-int read_packet(vpn_packet_t *packet)
+bool write_packet(vpn_packet_t *packet)
{
- int lenin;
-cp
- if((lenin = read(device_fd, packet->data + 14, MTU - 14)) <= 0)
- {
- syslog(LOG_ERR, _("Error while reading from %s %s: %m"), device_info, device_fname);
- return -1;
- }
-
- memcpy(vp->data, mymac.net.mac.address.x, 6);
- memcpy(vp->data + 6, mymac.net.mac.address.x, 6);
- vp->data[12] = 0x08;
- vp->data[13] = 0x00;
-
- packet->len = lenin + 14;
-
- device_total_in += packet->len;
-
- if(debug_lvl >= DEBUG_TRAFFIC)
- {
- syslog(LOG_DEBUG, _("Read packet of %d bytes from %s"), device_info, packet.len);
- }
-
- return 0;
-cp
+ cp();
+
+ ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"),
+ packet->len, device_info);
+
+ if(write(device_fd, packet->data + 14, packet->len - 14) < 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;
}
-int write_packet(vpn_packet_t *packet)
+void dump_device_stats(void)
{
-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 + 14, packet->len - 14) < 0)
- {
- syslog(LOG_ERR, _("Can't write to %s %s: %m"), device_info, packet.len);
- return -1;
- }
-
- device_total_out += packet->len;
-cp
+ cp();
+
+ 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