along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: device.c,v 1.1.2.5 2003/07/29 12:38:49 guus Exp $
+ $Id: device.c,v 1.1.2.14 2003/10/08 11:37:53 guus Exp $
*/
#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)
+#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)
+#define TAP_IOCTL_GET_VERSION TAP_CONTROL_CODE(3, METHOD_BUFFERED)
+#define TAP_IOCTL_GET_MTU TAP_CONTROL_CODE(4, METHOD_BUFFERED)
+#define TAP_IOCTL_GET_INFO TAP_CONTROL_CODE(5, METHOD_BUFFERED)
+#define TAP_IOCTL_CONFIG_POINT_TO_POINT TAP_CONTROL_CODE(6, METHOD_BUFFERED)
+#define TAP_IOCTL_SET_MEDIA_STATUS TAP_CONTROL_CODE(7, METHOD_BUFFERED)
-/* FIXME: This only works for Windows 2000 */
-#define OSTYPE 5
-HANDLE device_fd = INVALID_HANDLE_VALUE;
+int device_fd = 0;
+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;
+extern char *myport;
+
+DWORD WINAPI tapreader(void *bla) {
+ int sock, err, status;
+ struct addrinfo *ai;
+ struct addrinfo hint = {
+ .ai_family = AF_UNSPEC,
+ .ai_socktype = SOCK_DGRAM,
+ .ai_protocol = IPPROTO_UDP,
+ .ai_flags = 0,
+ };
+ char buf[MTU];
+ long len;
+ OVERLAPPED overlapped;
+
+ /* Open a socket to the parent process */
+
+ err = getaddrinfo(NULL, myport, &hint, &ai);
+
+ if(err || !ai) {
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "getaddrinfo", gai_strerror(errno));
+ return -1;
+ }
+
+ sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+
+ freeaddrinfo(ai);
+
+ if(sock < 0) {
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "socket", strerror(errno));
+ return -1;
+ }
+
+ if(connect(sock, ai->ai_addr, ai->ai_addrlen)) {
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "connect", strerror(errno));
+ return -1;
+ }
+
+ logger(LOG_DEBUG, _("Tap reader running"));
+
+ /* Read from tap device and send to parent */
+
+ overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+
+ for(;;) {
+ overlapped.Offset = 0;
+ overlapped.OffsetHigh = 0;
+ ResetEvent(overlapped.hEvent);
+
+ status = ReadFile(device_handle, buf, sizeof(buf), &len, &overlapped);
+
+ if(!status) {
+ if(GetLastError() == ERROR_IO_PENDING) {
+ WaitForSingleObject(overlapped.hEvent, INFINITE);
+ if(!GetOverlappedResult(device_handle, &overlapped, &len, FALSE))
+ continue;
+ } else {
+ logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
+ device, strerror(errno));
+ return -1;
+ }
+ }
+
+ if(send(sock, buf, len, 0) <= 0)
+ return -1;
+ }
+}
+
bool setup_device(void)
{
HKEY key, key2;
char adapterid[1024];
char adaptername[1024];
char tapname[1024];
- char gelukt = 0;
long len;
+ unsigned long status;
bool found = false;
+ int sock, err;
+ HANDLE thread;
+
+ struct addrinfo *ai;
+ struct addrinfo hint = {
+ .ai_family = AF_UNSPEC,
+ .ai_socktype = SOCK_DGRAM,
+ .ai_protocol = IPPROTO_UDP,
+ .ai_flags = 0,
+ };
+
cp();
get_config_string(lookup_config(config_tree, "Device"), &device);
/* 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"));
+ logger(LOG_ERR, _("Unable to read registry: %s"), winerror(GetLastError()));
return false;
}
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)) {
}
snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, adapterid);
- device_fd = CreateFile(tapname, GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM, 0);
- if(device_fd != INVALID_HANDLE_VALUE) {
+ device_handle = CreateFile(tapname, GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, 0);
+ if(device_handle != INVALID_HANDLE_VALUE) {
found = true;
break;
}
}
+ RegCloseKey(key);
+
if(!found) {
logger(LOG_ERR, _("No Windows tap device found!"));
return false;
}
- device = adapterid;
- iface = adaptername;
+ if(!device)
+ device = xstrdup(adapterid);
+
+ if(!iface)
+ iface = xstrdup(adaptername);
/* Try to open the corresponding tap device */
- if(device_fd == INVALID_HANDLE_VALUE) {
+ if(device_handle == INVALID_HANDLE_VALUE) {
snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, device);
- device_fd = CreateFile(tapname, GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM, 0);
+ device_handle = CreateFile(tapname, GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, 0);
}
- if(device_fd == INVALID_HANDLE_VALUE) {
- logger(LOG_ERR, _("%s (%s) is no a usable Windows tap device!"), device, iface);
+ if(device_handle == INVALID_HANDLE_VALUE) {
+ 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_fd, 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!"));
+ 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;
}
overwrite_mac = 1;
}
+ /* Create a listening socket */
+
+ err = getaddrinfo(NULL, myport, &hint, &ai);
+
+ if(err || !ai) {
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "getaddrinfo", gai_strerror(errno));
+ return false;
+ }
+
+ sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+
+ if(sock < 0) {
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "socket", strerror(errno));
+ return false;
+ }
+
+ if(bind(sock, ai->ai_addr, ai->ai_addrlen)) {
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "bind", strerror(errno));
+ return false;
+ }
+
+ freeaddrinfo(ai);
+
+ if(listen(sock, 1)) {
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "listen", strerror(errno));
+ return false;
+ }
+
+ /* Start the tap reader */
+
+ thread = CreateThread(NULL, 0, tapreader, NULL, 0, NULL);
+
+ if(!thread) {
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "CreateThread", winerror(GetLastError()));
+ return false;
+ }
+
+ /* Wait for the tap reader to connect back to us */
+
+ if((device_fd = accept(sock, NULL, 0)) == -1) {
+ logger(LOG_ERR, _("System call `%s' failed: %s"), "accept", strerror(errno));
+ 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);
{
cp();
- CloseHandle(device_fd);
+ CloseHandle(device_handle);
}
bool read_packet(vpn_packet_t *packet)
{
- long lenin;
+ int lenin;
cp();
- if(!ReadFile(device_fd, packet->data, MTU, &lenin, NULL)) {
+ if((lenin = recv(device_fd, packet->data, MTU, 0)) <= 0) {
logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
device, strerror(errno));
return false;
bool write_packet(vpn_packet_t *packet)
{
long lenout;
+ OVERLAPPED overlapped = {0};
cp();
ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"),
packet->len, device_info);
- if(!WriteFile(device_fd, packet->data, packet->len, &lenout, NULL)) {
- logger(LOG_ERR, _("Error while writing to %s %s"), device_info, device);
+ if(!WriteFile(device_handle, packet->data, packet->len, &lenout, &overlapped)) {
+ logger(LOG_ERR, _("Error while writing to %s %s: %s"), device_info, device, winerror(GetLastError()));
return false;
}
projects / tinc / blobdiff