+ 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(DEBUG_ALWAYS, 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(DEBUG_ALWAYS, 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(DEBUG_ALWAYS, LOG_ERR, "Could not open Windows tap device %s (%s) for writing: %s", device, iface, winerror(GetLastError()));
+ return false;
+ }