/*
device.c -- Interaction with Windows tap driver in a MinGW environment
- Copyright (C) 2002-2003 Ivo Timmermans <ivo@o2w.nl>,
- 2002-2003 Guus Sliepen <guus@sliepen.eu.org>
+ Copyright (C) 2002-2005 Ivo Timmermans <ivo@tinc-vpn.org>,
+ 2002-2005 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 1.1.2.6 2003/07/29 22:59:01 guus Exp $
+ $Id$
*/
#include "system.h"
#include "utils.h"
#include "xalloc.h"
-#define NETCARD_REG_KEY_2000 "SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E972-E325-11CE-BFC1-08002BE10318}"
-#define NETCARD_REG_KEY "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\NetworkCards"
-#define REG_SERVICE_KEY "SYSTEM\\CurrentControlSet\\Services"
-#define REG_CONTROL_NET "SYSTEM\\CurrentControlSet\\Control\\Network\\{4D36E972-E325-11CE-BFC1-08002BE10318}"
-
-#define USERMODEDEVICEDIR "\\\\.\\"
-#define SYSDEVICEDIR "\\Device\\"
-#define USERDEVICEDIR "\\??\\"
-#define TAPSUFFIX ".tap"
-
-#define TAP_CONTROL_CODE(request,method) CTL_CODE(FILE_DEVICE_PHYSICAL_NETCARD | 8000, request, method, FILE_ANY_ACCESS)
-
-#define TAP_IOCTL_GET_LASTMAC TAP_CONTROL_CODE(0, METHOD_BUFFERED)
-#define TAP_IOCTL_GET_MAC TAP_CONTROL_CODE(1, METHOD_BUFFERED)
-#define TAP_IOCTL_SET_STATISTICS TAP_CONTROL_CODE(2, METHOD_BUFFERED)
-
-/* FIXME: This only works for Windows 2000 */
-#define OSTYPE 5
+#include "mingw/common.h"
int device_fd = 0;
-HANDLE device_handle = INVALID_HANDLE_VALUE;
+static HANDLE device_handle = INVALID_HANDLE_VALUE;
char *device = NULL;
char *iface = NULL;
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;
+
+extern char *myport;
DWORD WINAPI tapreader(void *bla) {
int sock, err, status;
/* Open a socket to the parent process */
- err = getaddrinfo(NULL, "12345", &hint, &ai);
+ err = getaddrinfo(NULL, myport, &hint, &ai);
if(err || !ai) {
logger(LOG_ERR, _("System call `%s' failed: %s"), "getaddrinfo", gai_strerror(errno));
char adaptername[1024];
char tapname[1024];
long len;
+ unsigned long status;
bool found = false;
.ai_family = AF_UNSPEC,
.ai_socktype = SOCK_DGRAM,
.ai_protocol = IPPROTO_UDP,
- .ai_flags = AI_PASSIVE,
+ .ai_flags = 0,
};
cp();
/* Open registry and look for network adapters */
- if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, REG_CONTROL_NET, 0, KEY_READ, &key)) {
- logger(LOG_ERR, _("Unable to read registry"));
+ if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, NETWORK_CONNECTIONS_KEY, 0, KEY_READ, &key)) {
+ logger(LOG_ERR, _("Unable to read registry: %s"), winerror(GetLastError()));
return false;
}
/* Find out more about this adapter */
- snprintf(regpath, sizeof(regpath), "%s\\%s\\Connection", REG_CONTROL_NET, adapterid);
+ snprintf(regpath, sizeof(regpath), "%s\\%s\\Connection", NETWORK_CONNECTIONS_KEY, adapterid);
if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, regpath, 0, KEY_READ, &key2))
continue;
len = sizeof(adaptername);
- RegQueryValueEx(key2, "Name", 0, 0, adaptername, &len);
+ err = RegQueryValueEx(key2, "Name", 0, 0, adaptername, &len);
+
+ RegCloseKey(key2);
+
+ if(err)
+ continue;
if(device) {
if(!strcmp(device, adapterid)) {
}
}
+ RegCloseKey(key);
+
if(!found) {
logger(LOG_ERR, _("No Windows tap device found!"));
return false;
}
if(device_handle == INVALID_HANDLE_VALUE) {
- logger(LOG_ERR, _("%s (%s) is no a usable Windows tap device!"), device, iface);
+ logger(LOG_ERR, _("%s (%s) is not a usable Windows tap device: %s"), device, iface, winerror(GetLastError()));
return false;
}
/* Get MAC address from tap device */
if(!DeviceIoControl(device_handle, TAP_IOCTL_GET_MAC, mymac.x, sizeof(mymac.x), mymac.x, sizeof(mymac.x), &len, 0)) {
- logger(LOG_ERR, _("Could not get MAC address from Windows tap device!"));
+ logger(LOG_ERR, _("Could not get MAC address from Windows tap device %s (%s): %s"), device, iface, winerror(GetLastError()));
return false;
}
/* Create a listening socket */
- err = getaddrinfo(NULL, "12345", &hint, &ai);
+ err = getaddrinfo(NULL, myport, &hint, &ai);
if(err || !ai) {
logger(LOG_ERR, _("System call `%s' failed: %s"), "getaddrinfo", gai_strerror(errno));
thread = CreateThread(NULL, 0, tapreader, NULL, 0, NULL);
if(!thread) {
- logger(LOG_ERR, _("System call `%s' failed: %s"), "CreateThread", strerror(errno));
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "CreateThread", winerror(GetLastError()));
return false;
}
closesocket(sock);
+ /* Set media status for newer TAP-Win32 devices */
+
+ status = true;
+ DeviceIoControl(device_handle, TAP_IOCTL_SET_MEDIA_STATUS, &status, sizeof(status), &status, sizeof(status), &len, NULL);
+
device_info = _("Windows tap device");
logger(LOG_INFO, _("%s (%s) is a %s"), device, iface, device_info);
packet->len, device_info);
if(!WriteFile(device_handle, packet->data, packet->len, &lenout, &overlapped)) {
- logger(LOG_ERR, _("Error while writing to %s %s"), device_info, device);
+ logger(LOG_ERR, _("Error while writing to %s %s: %s"), device_info, device, winerror(GetLastError()));
return false;
}