/*
device.c -- Interaction BSD tun/tap device
Copyright (C) 2001-2005 Ivo Timmermans,
- 2001-2007 Guus Sliepen <guus@tinc-vpn.org>
+ 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
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 1398 2004-11-01 15:18:53Z guus $
+ 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 "net.h"
#include "route.h"
#include "utils.h"
+#include "xalloc.h"
+
+#ifdef HAVE_TUNEMU
+#include "bsd/tunemu.h"
+#endif
#define DEFAULT_DEVICE "/dev/tun0"
DEVICE_TYPE_TUN,
DEVICE_TYPE_TUNIFHEAD,
DEVICE_TYPE_TAP,
+#ifdef HAVE_TUNEMU
+ DEVICE_TYPE_TUNEMU,
+#endif
} device_type_t;
int device_fd = -1;
-char *device;
-char *iface;
-char *device_info;
+char *device = NULL;
+char *iface = NULL;
+static char *device_info = NULL;
static int device_total_in = 0;
static int device_total_out = 0;
-#ifdef HAVE_OPENBSD
+#if defined(TUNEMU)
+static device_type_t device_type = DEVICE_TYPE_TUNEMU;
+#elif defined(HAVE_OPENBSD) || defined(HAVE_FREEBSD)
static device_type_t device_type = DEVICE_TYPE_TUNIFHEAD;
#else
static device_type_t device_type = DEVICE_TYPE_TUN;
bool setup_device(void) {
char *type;
- cp();
-
if(!get_config_string(lookup_config(config_tree, "Device"), &device))
- device = DEFAULT_DEVICE;
+ device = xstrdup(DEFAULT_DEVICE);
if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
- iface = rindex(device, '/') ? rindex(device, '/') + 1 : device;
-
- if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
- logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
- return false;
- }
+ iface = xstrdup(rindex(device, '/') ? rindex(device, '/') + 1 : device);
if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) {
if(!strcasecmp(type, "tun"))
/* use default */;
+#ifdef HAVE_TUNEMU
+ else if(!strcasecmp(type, "tunemu"))
+ device_type = DEVICE_TYPE_TUNEMU;
+#endif
else if(!strcasecmp(type, "tunnohead"))
device_type = DEVICE_TYPE_TUN;
else if(!strcasecmp(type, "tunifhead"))
return false;
}
} else {
- if(strstr(device, "tap"))
+ if(strstr(device, "tap") || routing_mode != RMODE_ROUTER)
device_type = DEVICE_TYPE_TAP;
}
+ switch(device_type) {
+#ifdef HAVE_TUNEMU
+ case DEVICE_TYPE_TUNEMU: {
+ char dynamic_name[256] = "";
+ device_fd = tunemu_open(dynamic_name);
+ }
+ break;
+#endif
+ default:
+ device_fd = open(device, O_RDWR | O_NONBLOCK);
+ }
+
+ if(device_fd < 0) {
+ logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
+ return false;
+ }
+
switch(device_type) {
default:
device_type = DEVICE_TYPE_TUN;
overwrite_mac = true;
device_info = _("Generic BSD tap device");
break;
+#ifdef HAVE_TUNEMU
+ case DEVICE_TYPE_TUNEMU:
+ device_info = _("BSD tunemu device");
+ break;
+#endif
}
logger(LOG_INFO, _("%s is a %s"), device, device_info);
}
void close_device(void) {
- cp();
+ switch(device_type) {
+#ifdef HAVE_TUNEMU
+ case DEVICE_TYPE_TUNEMU:
+ tunemu_close(device_fd);
+ break;
+#endif
+ default:
+ close(device_fd);
+ }
- close(device_fd);
+ free(device);
+ free(iface);
}
bool read_packet(vpn_packet_t *packet) {
int lenin;
- cp();
-
switch(device_type) {
case DEVICE_TYPE_TUN:
- if((lenin = read(device_fd, packet->data + 14, MTU - 14)) <= 0) {
+#ifdef HAVE_TUNEMU
+ case DEVICE_TYPE_TUNEMU:
+ if(device_type == DEVICE_TYPE_TUNEMU)
+ lenin = tunemu_read(device_fd, packet->data + 14, MTU - 14);
+ else
+#else
+ lenin = read(device_fd, packet->data + 14, MTU - 14);
+#endif
+
+ if(lenin <= 0) {
logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
device, strerror(errno));
return false;
ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"),
packet->len, device_info);
+ logger(LOG_INFO, "E:fd_read");
return true;
}
-bool write_packet(vpn_packet_t *packet)
-{
- cp();
-
+bool write_packet(vpn_packet_t *packet) {
ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"),
packet->len, device_info);
}
break;
+#ifdef HAVE_TUNEMU
+ case DEVICE_TYPE_TUNEMU:
+ if(tunemu_write(device_fd, packet->data + 14, packet->len - 14) < 0) {
+ logger(LOG_ERR, _("Error while writing to %s %s: %s"), device_info,
+ device, strerror(errno));
+ return false;
+ }
+ break;
+#endif
+
default:
return false;
}
return true;
}
-void dump_device_stats(void)
-{
- cp();
-
+void dump_device_stats(void) {
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);
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