/*
device.c -- Interaction with Solaris tun device
- Copyright (C) 2001-2002 Ivo Timmermans <ivo@o2w.nl>,
- 2001-2002 Guus Sliepen <guus@sliepen.eu.org>
+ Copyright (C) 2001-2005 Ivo Timmermans,
+ 2001-2009 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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: device.c,v 1.1.2.13 2003/07/06 22:11:37 guus Exp $
+ $Id$
*/
-#include "config.h"
+#include "system.h"
-#include <stdio.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <sys/socket.h>
-#include <net/if.h>
-#include <unistd.h>
-#include <string.h>
-#include <sys/ioctl.h>
#include <sys/stropts.h>
#include <sys/sockio.h>
#include <net/if_tun.h>
-#define DEFAULT_DEVICE "/dev/tun"
-
-#include <utils.h>
#include "conf.h"
-#include "net.h"
#include "logger.h"
+#include "net.h"
+#include "utils.h"
+#include "xalloc.h"
-#include "system.h"
+#define DEFAULT_DEVICE "/dev/tun"
int device_fd = -1;
-int device_type;
char *device = NULL;
-char *interface = NULL;
-char ifrname[IFNAMSIZ];
-char *device_info = NULL;
+char *iface = NULL;
+static char *device_info = NULL;
-int device_total_in = 0;
-int device_total_out = 0;
+static int device_total_in = 0;
+static int device_total_out = 0;
-int setup_device(void)
+bool setup_device(void)
{
int ip_fd = -1, if_fd = -1;
int ppa;
cp();
if(!get_config_string(lookup_config(config_tree, "Device"), &device))
- device = DEFAULT_DEVICE;
+ device = xstrdup(DEFAULT_DEVICE);
if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
- logger(DEBUG_ALWAYS, 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;
}
ppa = 0;
ppa = atoi(ptr);
if((ip_fd = open("/dev/ip", O_RDWR, 0)) < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Could not open /dev/ip: %s"), strerror(errno));
- return -1;
+ 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(DEBUG_ALWAYS, LOG_ERR, _("Can't assign new interface: %s"), strerror(errno));
- return -1;
+ logger(LOG_ERR, _("Can't assign new interface: %s"), strerror(errno));
+ return false;
}
if((if_fd = open(device, O_RDWR, 0)) < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Could not open %s twice: %s"), device,
+ logger(LOG_ERR, _("Could not open %s twice: %s"), device,
strerror(errno));
- return -1;
+ return false;
}
if(ioctl(if_fd, I_PUSH, "ip") < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Can't push IP module: %s"), strerror(errno));
- return -1;
+ logger(LOG_ERR, _("Can't push IP module: %s"), strerror(errno));
+ return false;
}
/* Assign ppa according to the unit number returned by tun device */
if(ioctl(if_fd, IF_UNITSEL, (char *) &ppa) < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Can't set PPA %d: %s"), ppa, strerror(errno));
- return -1;
+ logger(LOG_ERR, _("Can't set PPA %d: %s"), ppa, strerror(errno));
+ return false;
}
if(ioctl(ip_fd, I_LINK, if_fd) < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Can't link TUN device to IP: %s"), strerror(errno));
- return -1;
+ logger(LOG_ERR, _("Can't link TUN device to IP: %s"), strerror(errno));
+ return false;
}
- if(!get_config_string(lookup_config(config_tree, "Interface"), &interface))
- asprintf(&interface, "tun%d", ppa);
+ if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
+ xasprintf(&iface, "tun%d", ppa);
device_info = _("Solaris tun device");
- logger(DEBUG_ALWAYS, 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)
cp();
close(device_fd);
+
+ free(device);
+ free(iface);
}
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
{
int lenin;
cp();
if((lenin = read(device_fd, packet->data + 14, MTU - 14)) <= 0) {
- logger(DEBUG_ALWAYS, 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->data[12] = 0x08;
- packet->data[13] = 0x00;
+ 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;
- logger(DEBUG_TRAFFIC, 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();
- logger(DEBUG_TRAFFIC, 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 + 14, packet->len - 14) < 0) {
- logger(DEBUG_ALWAYS, LOG_ERR, _("Can't write to %s %s: %s"), device_info, packet->len,
- strerror(errno));
- return -1;
+ logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info,
+ device, strerror(errno));
+ return false;
}
device_total_out += packet->len;
- return 0;
+ return true;
}
void dump_device_stats(void)
{
cp();
- logger(DEBUG_ALWAYS, LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);
- logger(DEBUG_ALWAYS, LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);
- logger(DEBUG_ALWAYS, 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