/*
- device.c -- Interaction with CIPE driver in a Cygwin environment
+ device.c -- Interaction with Windows tap driver in a Cygwin environment
Copyright (C) 2002-2003 Ivo Timmermans <ivo@o2w.nl>,
2002-2003 Guus Sliepen <guus@sliepen.eu.org>
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: device.c,v 1.1.2.11 2003/07/28 21:54:03 guus Exp $
+ $Id: device.c,v 1.1.2.17 2003/10/08 11:37:20 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 REG_CONTROL_NET "SYSTEM\\CurrentControlSet\\Control\\Network\\{4D36E972-E325-11CE-BFC1-08002BE10318}"
#define USERMODEDEVICEDIR "\\\\.\\"
-#define SYSDEVICEDIR "\\Device\\"
#define USERDEVICEDIR "\\??\\"
-#define TAPSUFFIX ".tap"
+#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_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
-
int device_fd = -1;
+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;
-HANDLE handle;
-
pid_t reader_pid;
int sp[2];
bool setup_device(void)
{
HKEY key, key2;
- int i;
+ int i, err;
char regpath[1024];
char adapterid[1024];
/* 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;
}
if(RegEnumKeyEx(key, i, adapterid, &len, 0, 0, 0, NULL))
break;
+ /* Find out more about this adapter */
+
+ snprintf(regpath, sizeof(regpath), "%s\\%s\\Connection", REG_CONTROL_NET, 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;
continue;
}
- /* Find out more about this adapter */
-
- snprintf(regpath, sizeof(regpath), "%s\\%s\\Connection", REG_CONTROL_NET, adapterid);
-
- if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, regpath, 0, KEY_READ, &key2)) {
- logger(LOG_ERR, _("Unable to read registry"));
- return false;
- }
-
- len = sizeof(adaptername);
- RegQueryValueEx(key2, "Name", 0, 0, adaptername, &len);
-
if(iface) {
if(!strcmp(iface, adaptername)) {
found = true;
}
snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, adapterid);
- handle = CreateFile(tapname, GENERIC_WRITE | GENERIC_READ, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM, 0);
- if(handle != INVALID_HANDLE_VALUE) {
- CloseHandle(handle);
+ 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;
}
- device = adapterid;
- iface = adaptername;
+ if(!device)
+ device = xstrdup(adapterid);
+
+ if(!iface)
+ iface = xstrdup(adaptername);
snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, device);
/* The parent opens the tap device for writing. */
- handle = CreateFile(tapname, GENERIC_WRITE, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM , 0);
+ device_handle = CreateFile(tapname, GENERIC_WRITE, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM , 0);
- if(handle == INVALID_HANDLE_VALUE) {
- logger(LOG_ERR, _("Could not open CIPE tap device for writing!"));
+ 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;
}
/* 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;
}
It passes everything it reads to the socket. */
char buf[MTU];
- int lenin;
+ long lenin;
- handle = CreateFile(tapname, GENERIC_READ, FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM , 0);
+ CloseHandle(device_handle);
- if(handle == INVALID_HANDLE_VALUE) {
- logger(LOG_ERR, _("Could not open CIPE tap device for reading!"));
+ 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);
/* Pass packets */
for(;;) {
- ReadFile (handle, buf, MTU, &lenin, NULL);
+ 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!");
+ logger(LOG_DEBUG, _("Tap reader failed!"));
return false;
}
- if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
- iface = device;
-
device_info = _("Windows tap device");
logger(LOG_INFO, _("%s (%s) is a %s"), device, iface, device_info);
- return false;
+ return true;
}
void close_device(void)
close(sp[0]);
close(sp[1]);
- CloseHandle(handle);
+ CloseHandle(device_handle);
kill(reader_pid, SIGKILL);
}
bool write_packet(vpn_packet_t *packet)
{
- int lenout;
+ long lenout;
cp();
ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"),
packet->len, device_info);
- if(!WriteFile (handle, 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, NULL)) {
+ logger(LOG_ERR, _("Error while writing to %s %s: %s"), device_info, device, winerror(GetLastError()));
return false;
}
projects / tinc / blobdiff