X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fbsd%2Fdevice.c;h=bbd7c00efaf35e25f84bb416eeb9cd3f6b921de5;hp=ee1c988e3c6d50a25625f7dda76d84e7aed65462;hb=c217d214f4f071c235bc7c463a1da6124e2570a6;hpb=c6830ba821e6387be961ca68b32992382a74a0e9

diff --git a/src/bsd/device.c b/src/bsd/device.c
index ee1c988e..bbd7c00e 100644
--- a/src/bsd/device.c
+++ b/src/bsd/device.c
@@ -1,7 +1,7 @@
 /*
     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
@@ -16,8 +16,6 @@
     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 $
 */
 
 #include "system.h"
@@ -27,6 +25,11 @@
 #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"
 
@@ -34,15 +37,20 @@ typedef enum device_type {
 	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;
-#if defined(HAVE_OPENBSD) || defined(HAVE_FREEBSD)
+#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;
@@ -54,19 +62,18 @@ bool setup_device(void) {
 	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"))
@@ -82,6 +89,23 @@ bool setup_device(void) {
 			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;
@@ -128,6 +152,11 @@ bool setup_device(void) {
 				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);
@@ -138,7 +167,18 @@ bool setup_device(void) {
 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) {
@@ -148,7 +188,16 @@ 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;
@@ -224,6 +273,7 @@ bool read_packet(vpn_packet_t *packet) {
 	ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"),
 			   packet->len, device_info);
 
+	logger(LOG_INFO, "E:fd_read");
 	return true;
 }
 
@@ -280,6 +330,16 @@ bool write_packet(vpn_packet_t *packet)
 			}
 			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;
 	}