- 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;
+
+ 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;
+ }
+
+ 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(DEBUG_ALWAYS, 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(DEBUG_ALWAYS, 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 inlen;
+
+ 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(DEBUG_ALWAYS, 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(DEBUG_ALWAYS, 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, &inlen, NULL);
+ write(sp[1], buf, inlen);
+ }
+ }
+
+ read(device_fd, &gelukt, 1);
+ if(gelukt != 1) {
+ logger(DEBUG_ALWAYS, LOG_DEBUG, "Tap reader failed!");
+ return false;
+ }
+
+ device_info = "Windows tap device";
+
+ logger(DEBUG_ALWAYS, LOG_INFO, "%s (%s) is a %s", device, iface, device_info);
+
+ return true;