-int device_type;
-char *device;
-char *interface;
-char *device_info;
-
-int device_total_in = 0;
-int device_total_out = 0;
-
-extern subnet_t mymac;
-
-int setup_device(void)
-{
- struct ifreq ifr;
-
-cp
- if(!get_config_string(lookup_config(config_tree, "Device"), &device))
- device = DEFAULT_DEVICE;
-
- if(!get_config_string(lookup_config(config_tree, "Interface"), &interface))
- interface = rindex(device, '/')?rindex(device, '/')+1:device;
-cp
- if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0)
- {
- syslog(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
- return -1;
- }
-cp
- /* Set default MAC address for ethertap devices */
-
- mymac.type = SUBNET_MAC;
- mymac.net.mac.address.x[0] = 0xfe;
- mymac.net.mac.address.x[1] = 0xfd;
- mymac.net.mac.address.x[2] = 0x00;
- mymac.net.mac.address.x[3] = 0x00;
- mymac.net.mac.address.x[4] = 0x00;
- mymac.net.mac.address.x[5] = 0x00;
-
- device_info = _("Stub device for Cygwin environment");
-
- syslog(LOG_INFO, _("%s is a %s"), device, device_info);
-cp
- return 0;
+static HANDLE device_handle = INVALID_HANDLE_VALUE;
+char *device = NULL;
+char *iface = NULL;
+static char *device_info = NULL;
+
+static uint64_t device_total_in = 0;
+static uint64_t device_total_out = 0;
+
+static pid_t reader_pid;
+static int sp[2];
+
+bool setup_device(void) {
+ HKEY key, key2;
+ int i, err;
+
+ char regpath[1024];
+ char adapterid[1024];
+ char adaptername[1024];
+ char tapname[1024];
+ char gelukt = 0;
+ long len;
+
+ bool found = false;
+
+ get_config_string(lookup_config(config_tree, "Device"), &device);
+ get_config_string(lookup_config(config_tree, "Interface"), &iface);
+
+ /* Open registry and look for network adapters */
+
+ if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, NETWORK_CONNECTIONS_KEY, 0, KEY_READ, &key)) {
+ logger(LOG_ERR, "Unable to read registry: %s", winerror(GetLastError()));
+ return false;
+ }
+
+ for (i = 0; ; i++) {
+ len = sizeof(adapterid);
+ if(RegEnumKeyEx(key, i, adapterid, &len, 0, 0, 0, NULL))
+ break;
+
+ /* Find out more about this adapter */
+
+ 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);
+ err = RegQueryValueEx(key2, "Name", 0, 0, adaptername, &len);
+
+ RegCloseKey(key2);
+
+ if(err)
+ continue;
+
+ if(device) {
+ if(!strcmp(device, adapterid)) {
+ found = true;
+ break;
+ } else
+ continue;
+ }
+
+ if(iface) {
+ if(!strcmp(iface, adaptername)) {
+ found = true;
+ break;
+ } else
+ continue;
+ }
+
+ snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, adapterid);
+ device_handle = CreateFile(tapname, GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM, 0);
+ if(device_handle != INVALID_HANDLE_VALUE) {
+ CloseHandle(device_handle);
+ found = true;
+ break;
+ }
+ }
+
+ RegCloseKey(key);
+
+ if(!found) {
+ logger(LOG_ERR, "No Windows tap device found!");
+ return false;
+ }
+
+ if(!device)
+ device = xstrdup(adapterid);
+
+ if(!iface)
+ iface = xstrdup(adaptername);
+
+ snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, device);
+
+ /* Now we are going to open this device twice: once for reading and once for writing.
+ We do this because apparently it isn't possible to check for activity in the select() loop.
+ Furthermore I don't really know how to do it the "Windows" way. */
+
+ if(socketpair(AF_UNIX, SOCK_DGRAM, PF_UNIX, sp)) {
+ logger(LOG_DEBUG, "System call `%s' failed: %s", "socketpair", strerror(errno));
+ return false;
+ }
+
+ /* The parent opens the tap device for writing. */
+
+ device_handle = CreateFile(tapname, GENERIC_WRITE, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM , 0);
+
+ if(device_handle == INVALID_HANDLE_VALUE) {
+ logger(LOG_ERR, "Could not open Windows tap device %s (%s) for writing: %s", device, iface, winerror(GetLastError()));
+ return false;
+ }
+
+ device_fd = sp[0];
+
+ /* 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 %s (%s): %s", device, iface, winerror(GetLastError()));
+ return false;
+ }
+
+ if(routing_mode == RMODE_ROUTER) {
+ overwrite_mac = 1;
+ }
+
+ /* Now we start the child */
+
+ reader_pid = fork();
+
+ if(reader_pid == -1) {
+ logger(LOG_DEBUG, "System call `%s' failed: %s", "fork", strerror(errno));
+ return false;
+ }
+
+ if(!reader_pid) {
+ /* The child opens the tap device for reading, blocking.
+ It passes everything it reads to the socket. */
+
+ char buf[MTU];
+ long lenin;
+
+ CloseHandle(device_handle);
+
+ device_handle = CreateFile(tapname, GENERIC_READ, FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM, 0);
+
+ if(device_handle == INVALID_HANDLE_VALUE) {
+ logger(LOG_ERR, "Could not open Windows tap device %s (%s) for reading: %s", device, iface, winerror(GetLastError()));
+ buf[0] = 0;
+ write(sp[1], buf, 1);
+ exit(1);
+ }
+
+ logger(LOG_DEBUG, "Tap reader forked and running.");
+
+ /* Notify success */
+
+ buf[0] = 1;
+ write(sp[1], buf, 1);
+
+ /* Pass packets */
+
+ for(;;) {
+ ReadFile(device_handle, buf, MTU, &lenin, NULL);
+ write(sp[1], buf, lenin);
+ }
+ }
+
+ read(device_fd, &gelukt, 1);
+ if(gelukt != 1) {
+ logger(LOG_DEBUG, "Tap reader failed!");
+ return false;
+ }
+
+ device_info = "Windows tap device";
+
+ logger(LOG_INFO, "%s (%s) is a %s", device, iface, device_info);
+
+ return true;