/*
device.c -- Interaction BSD tun/tap device
- Copyright (C) 2001-2005 Ivo Timmermans <ivo@tinc-vpn.org>,
- 2001-2005 Guus Sliepen <guus@tinc-vpn.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
#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;
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();
- close(device_fd);
+ switch(device_type) {
+#ifdef HAVE_TUNEMU
+ case DEVICE_TYPE_TUNEMU:
+ tunemu_close(device_fd);
+ break;
+#endif
+ default:
+ close(device_fd);
+ }
+
+ free(device);
+ free(iface);
}
bool read_packet(vpn_packet_t *packet) {
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;
}
case DEVICE_TYPE_TUNIFHEAD: {
u_int32_t type;
- struct iovec vector[2] = {{&type, sizeof(type)}, {packet->data + 14, MTU - 14}};
+ struct iovec vector[2] = {{&type, sizeof(type)}, {packet->data + 14, packet->len - 14}};
int af;
af = (packet->data[12] << 8) + packet->data[13];
}
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;
}