/*
device.c -- Interaction BSD tun/tap device
Copyright (C) 2001-2005 Ivo Timmermans,
- 2001-2009 Guus Sliepen <guus@tinc-vpn.org>
+ 2001-2016 Guus Sliepen <guus@tinc-vpn.org>
2009 Grzegorz Dymarek <gregd72002@googlemail.com>
This program is free software; you can redistribute it and/or modify
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#include "system.h"
+#include "../system.h"
-#include "conf.h"
-#include "logger.h"
-#include "net.h"
-#include "route.h"
-#include "utils.h"
-#include "xalloc.h"
+#include "../conf.h"
+#include "../device.h"
+#include "../logger.h"
+#include "../net.h"
+#include "../route.h"
+#include "../utils.h"
+#include "../xalloc.h"
-#ifdef HAVE_TUNEMU
-#include "bsd/tunemu.h"
+#ifdef ENABLE_TUNEMU
+#include "tunemu.h"
#endif
-#define DEFAULT_DEVICE "/dev/tun0"
+#define DEFAULT_TUN_DEVICE "/dev/tun0"
+#define DEFAULT_TAP_DEVICE "/dev/tap0"
typedef enum device_type {
DEVICE_TYPE_TUN,
DEVICE_TYPE_TUNIFHEAD,
DEVICE_TYPE_TAP,
-#ifdef HAVE_TUNEMU
+#ifdef ENABLE_TUNEMU
DEVICE_TYPE_TUNEMU,
#endif
} device_type_t;
char *device = NULL;
char *iface = NULL;
static char *device_info = NULL;
-static int device_total_in = 0;
-static int device_total_out = 0;
-#if defined(TUNEMU)
+static uint64_t device_total_in = 0;
+static uint64_t device_total_out = 0;
+#if defined(ENABLE_TUNEMU)
static device_type_t device_type = DEVICE_TYPE_TUNEMU;
-#elif defined(HAVE_OPENBSD) || defined(HAVE_FREEBSD)
+#elif defined(HAVE_OPENBSD) || defined(HAVE_FREEBSD) || defined(HAVE_DRAGONFLY)
static device_type_t device_type = DEVICE_TYPE_TUNIFHEAD;
#else
static device_type_t device_type = DEVICE_TYPE_TUN;
#endif
-bool setup_device(void) {
+static bool setup_device(void) {
char *type;
- if(!get_config_string(lookup_config(config_tree, "Device"), &device))
- device = xstrdup(DEFAULT_DEVICE);
+ if(!get_config_string(lookup_config(config_tree, "Device"), &device)) {
+ if(routing_mode == RMODE_ROUTER)
+ device = xstrdup(DEFAULT_TUN_DEVICE);
+ else
+ device = xstrdup(DEFAULT_TAP_DEVICE);
+ }
if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
- iface = xstrdup(rindex(device, '/') ? rindex(device, '/') + 1 : device);
+ iface = xstrdup(strrchr(device, '/') ? strrchr(device, '/') + 1 : device);
+ else if(strcmp(iface, strrchr(device, '/') ? strrchr(device, '/') + 1 : device))
+ logger(LOG_WARNING, "Warning: Interface does not match Device. $INTERFACE might be set incorrectly.");
if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) {
if(!strcasecmp(type, "tun"))
/* use default */;
-#ifdef HAVE_TUNEMU
+#ifdef ENABLE_TUNEMU
else if(!strcasecmp(type, "tunemu"))
device_type = DEVICE_TYPE_TUNEMU;
#endif
}
switch(device_type) {
-#ifdef HAVE_TUNEMU
+#ifdef ENABLE_TUNEMU
case DEVICE_TYPE_TUNEMU: {
char dynamic_name[256] = "";
device_fd = tunemu_open(dynamic_name);
return false;
}
+#ifdef FD_CLOEXEC
+ fcntl(device_fd, F_SETFD, FD_CLOEXEC);
+#endif
+
switch(device_type) {
default:
device_type = DEVICE_TYPE_TUN;
if(routing_mode == RMODE_ROUTER)
overwrite_mac = true;
device_info = "Generic BSD tap device";
+#ifdef TAPGIFNAME
+ {
+ struct ifreq ifr;
+ if(ioctl(device_fd, TAPGIFNAME, (void*)&ifr) == 0) {
+ if(iface)
+ free(iface);
+ iface = xstrdup(ifr.ifr_name);
+ }
+ }
+
+#endif
break;
-#ifdef HAVE_TUNEMU
+#ifdef ENABLE_TUNEMU
case DEVICE_TYPE_TUNEMU:
device_info = "BSD tunemu device";
break;
return true;
}
-void close_device(void) {
+static void close_device(void) {
switch(device_type) {
-#ifdef HAVE_TUNEMU
+#ifdef ENABLE_TUNEMU
case DEVICE_TYPE_TUNEMU:
tunemu_close(device_fd);
break;
free(iface);
}
-bool read_packet(vpn_packet_t *packet) {
+static bool read_packet(vpn_packet_t *packet) {
int lenin;
switch(device_type) {
case DEVICE_TYPE_TUN:
-#ifdef HAVE_TUNEMU
+#ifdef ENABLE_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
+ lenin = read(device_fd, packet->data + 14, MTU - 14);
if(lenin <= 0) {
logger(LOG_ERR, "Error while reading from %s %s: %s", device_info,
break;
default:
ifdebug(TRAFFIC) logger(LOG_ERR,
- _ ("Unknown IP version %d while reading packet from %s %s"),
+ "Unknown IP version %d while reading packet from %s %s",
packet->data[14] >> 4, device_info, device);
return false;
}
+ memset(packet->data, 0, 12);
packet->len = lenin + 14;
break;
default:
ifdebug(TRAFFIC) logger(LOG_ERR,
- _ ("Unknown address family %x while reading packet from %s %s"),
+ "Unknown address family %x while reading packet from %s %s",
ntohl(type), device_info, device);
return false;
}
+ memset(packet->data, 0, 12);
packet->len = lenin + 10;
break;
}
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) {
+static 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
+#ifdef ENABLE_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,
return true;
}
-void dump_device_stats(void) {
+static 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);
+ logger(LOG_DEBUG, " total bytes in: %10"PRIu64, device_total_in);
+ logger(LOG_DEBUG, " total bytes out: %10"PRIu64, device_total_out);
}
+
+const devops_t os_devops = {
+ .setup = setup_device,
+ .close = close_device,
+ .read = read_packet,
+ .write = write_packet,
+ .dump_stats = dump_device_stats,
+};
projects / oweals / tinc.git / blobdiff