From: Guus Sliepen <guus@tinc-vpn.org>
Date: Mon, 28 Jul 2003 21:54:03 +0000 (+0000)
Subject: More generic handling of tap device under Windows.
X-Git-Tag: release-1.0~41
X-Git-Url: https://tinc-vpn.org/git/browse?a=commitdiff_plain;h=c15e8a96bf7e45adf750b7a36b0e8446ea049468;p=tinc
More generic handling of tap device under Windows.
---
diff --git a/src/cygwin/device.c b/src/cygwin/device.c
index 49bbbea3..131a786b 100644
--- a/src/cygwin/device.c
+++ b/src/cygwin/device.c
@@ -1,303 +1,291 @@
-/*
- device.c -- Interaction with CIPE driver in a Cygwin environment
- Copyright (C) 2002-2003 Ivo Timmermans <ivo@o2w.nl>,
- 2002-2003 Guus Sliepen <guus@sliepen.eu.org>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id: device.c,v 1.1.2.10 2003/07/22 20:55:20 guus Exp $
-*/
-
-#include "system.h"
-
-#include <w32api/windows.h>
-#include <w32api/winioctl.h>
-
-#include "conf.h"
-#include "logger.h"
-#include "net.h"
-#include "route.h"
-#include "utils.h"
-#include "xalloc.h"
-
-/* Definitions from CIPE */
-
-#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 USERMODEDEVICEDIR "\\\\.\\"
-#define SYSDEVICEDIR "\\Device\\"
-#define USERDEVICEDIR "\\??\\"
-#define TAPSUFFIX ".tap"
-
-#define PRODUCT_STRING "DKW Heavy Industries VPN Adapter."
-#define CIPE_SERVICE_NAME "CIPE_Daemon"
-#define CIPE_DRIVER_NAME "CIPE"
-
-#define CIPE_NDIS_MAJOR_VERSION 4
-#define CIPE_NDIS_MINOR_VERSION 0
-
-#ifndef CIPE_DRIVER_MAJOR_VERSION
-# define CIPE_DRIVER_MAJOR_VERSION 2
-#endif
-
-#ifndef CIPE_DRIVER_MINOR_VERSION
-# define CIPE_DRIVER_MINOR_VERSION 1
-#endif
-
-#ifndef CIPE_MAC_ROOT_ADDRESS
-# define CIPE_MAC_ROOT_ADDRESS "8:0:58:0:0:1"
-#endif
-
-#define CIPE_CONTROL_CODE(request,method) CTL_CODE (FILE_DEVICE_PHYSICAL_NETCARD | 8000, request, method, FILE_ANY_ACCESS)
-
-#define CIPE_IOCTL_GET_LASTMAC CIPE_CONTROL_CODE (0, METHOD_BUFFERED)
-#define CIPE_IOCTL_GET_MAC CIPE_CONTROL_CODE (1, METHOD_BUFFERED)
-#define CIPE_IOCTL_SET_STATISTICS CIPE_CONTROL_CODE (2, METHOD_BUFFERED)
-
-/* Windows 2000 */
-#define OSTYPE 5
-
-int device_fd = -1;
-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, adapterkey;
- int i;
-
- char adapterid[1024];
- char manufacturer[1024];
- char productname[1024];
- char adaptername[1024];
- char tapname[1024];
- char gelukt = 0;
- long len;
-
- FILETIME filetime;
- bool found = false;
-
- cp();
-
- get_config_string(lookup_config(config_tree, "Device"), &device);
-
- /* Open registry and look for network adapters */
-
- if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, (OSTYPE > 4 ? NETCARD_REG_KEY_2000 : NETCARD_REG_KEY), 0, KEY_READ, &key)) {
- logger(LOG_ERR, _("Unable to read registry"));
- return false;
- }
-
- for (i = 0; ; i++) {
- len = sizeof(adapterid);
- if(RegEnumKeyEx (key, i, adapterid, &len, 0, 0, 0, &filetime))
- break;
-
- /* Find out more about this adapter */
-
- if(RegOpenKeyEx (key, adapterid, 0, KEY_READ, &adapterkey)) {
- logger(LOG_ERR, _("Unable to read registry"));
- return false;
- }
-
- len = sizeof(productname);
- if(RegQueryValueEx(adapterkey, "ProductName", 0, 0, productname, &len))
- goto skip;
-
- len = sizeof(manufacturer);
- if(RegQueryValueEx(adapterkey, "Manufacturer", 0, 0, manufacturer, &len))
- goto skip;
-
- if(!strcmp(productname, "CIPE") && !strcmp(manufacturer, "DKWHeavyIndustries")) {
- if(device && strcmp(adapterid, device))
- continue;
- if(!device)
- device = xstrdup(adapterid);
- found = true;
- break;
- }
-
-skip:
- RegCloseKey (adapterkey);
- }
-
- if(!found) {
- logger(LOG_ERR, _("No CIPE adapters found!"));
- return false;
- }
-
- /* Get adapter name */
-
- len = sizeof(adaptername);
- RegQueryValueEx(adapterkey, (OSTYPE > 4 ? "NetCfgInstanceId" : "ServiceName"), 0, 0, adaptername, &len);
-
- /* FIXME? cipsrvr checks if the device is in use at this point */
-
- /* Try to open the corresponding tap device */
-
- snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, adaptername);
-
- /* 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;
- }
-
- 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];
- int lenin;
-
- handle = CreateFile(tapname, GENERIC_READ, FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM , 0);
-
- if(handle == INVALID_HANDLE_VALUE) {
- logger(LOG_ERR, _("Could not open CIPE tap device for reading!"));
- 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 (handle, buf, MTU, &lenin, NULL);
- write(sp[1], buf, lenin);
- }
- }
-
- /* The parent opens the tap device for writing. */
-
- 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!"));
- return false;
- }
-
- device_fd = sp[0];
-
- /* Get MAC address from tap device */
-
- if(routing_mode == RMODE_ROUTER) {
- DeviceIoControl (handle, CIPE_IOCTL_GET_MAC, mymac.x, sizeof(mymac.x), mymac.x, sizeof(mymac.x), &len, 0);
- overwrite_mac = 1;
- }
-
- read(device_fd, &gelukt, 1);
- if(gelukt != 1) {
- logger(LOG_DEBUG, "Tap reader failed!");
- return false;
- }
-
- if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
- iface = device;
-
- device_info = _("Cygwin CIPE device");
-
- logger(LOG_INFO, _("%s is a %s"), device, device_info);
-
- return false;
-}
-
-void close_device(void)
-{
- cp();
-
- close(sp[0]);
- close(sp[1]);
- CloseHandle(handle);
-
- kill(reader_pid, SIGKILL);
-}
-
-bool read_packet(vpn_packet_t *packet)
-{
- int lenin;
-
- cp();
-
- if((lenin = read(sp[0], packet->data, MTU)) <= 0) {
- logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
- device, strerror(errno));
- return false;
- }
-
- packet->len = lenin;
-
- device_total_in += packet->len;
-
- ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
- device_info);
-
- return true;
-}
-
-bool write_packet(vpn_packet_t *packet)
-{
- int 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);
- return false;
- }
-
- device_total_out += packet->len;
-
- return true;
-}
-
-void dump_device_stats(void)
-{
- cp();
-
- logger(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);
- logger(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);
- logger(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out);
-}
+/*
+ device.c -- Interaction with CIPE driver in a Cygwin environment
+ Copyright (C) 2002-2003 Ivo Timmermans <ivo@o2w.nl>,
+ 2002-2003 Guus Sliepen <guus@sliepen.eu.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ 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 $
+*/
+
+#include "system.h"
+
+#include <w32api/windows.h>
+#include <w32api/winioctl.h>
+
+#include "conf.h"
+#include "logger.h"
+#include "net.h"
+#include "route.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)
+
+/* FIXME: This only works for Windows 2000 */
+#define OSTYPE 5
+
+int device_fd = -1;
+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;
+
+ char regpath[1024];
+ char adapterid[1024];
+ char adaptername[1024];
+ char tapname[1024];
+ char gelukt = 0;
+ long len;
+
+ bool found = false;
+
+ cp();
+
+ 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, REG_CONTROL_NET, 0, KEY_READ, &key)) {
+ logger(LOG_ERR, _("Unable to read registry"));
+ return false;
+ }
+
+ for (i = 0; ; i++) {
+ len = sizeof(adapterid);
+ if(RegEnumKeyEx(key, i, adapterid, &len, 0, 0, 0, NULL))
+ break;
+
+ if(device) {
+ if(!strcmp(device, adapterid)) {
+ found = true;
+ break;
+ } else
+ 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;
+ break;
+ } else
+ continue;
+ }
+
+ 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);
+ found = true;
+ break;
+ }
+ }
+
+ if(!found) {
+ logger(LOG_ERR, _("No Windows tap device found!"));
+ return false;
+ }
+
+ device = adapterid;
+ iface = 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. */
+
+ 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!"));
+ return false;
+ }
+
+ device_fd = sp[0];
+
+ /* 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!"));
+ 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];
+ int lenin;
+
+ handle = CreateFile(tapname, GENERIC_READ, FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM , 0);
+
+ if(handle == INVALID_HANDLE_VALUE) {
+ logger(LOG_ERR, _("Could not open CIPE tap device for reading!"));
+ 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 (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;
+ }
+
+ 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;
+}
+
+void close_device(void)
+{
+ cp();
+
+ close(sp[0]);
+ close(sp[1]);
+ CloseHandle(handle);
+
+ kill(reader_pid, SIGKILL);
+}
+
+bool read_packet(vpn_packet_t *packet)
+{
+ int lenin;
+
+ cp();
+
+ if((lenin = read(sp[0], packet->data, MTU)) <= 0) {
+ logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
+ device, strerror(errno));
+ return false;
+ }
+
+ packet->len = lenin;
+
+ device_total_in += packet->len;
+
+ ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
+ device_info);
+
+ return true;
+}
+
+bool write_packet(vpn_packet_t *packet)
+{
+ int 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);
+ return false;
+ }
+
+ device_total_out += packet->len;
+
+ return true;
+}
+
+void dump_device_stats(void)
+{
+ cp();
+
+ logger(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);
+ logger(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);
+ logger(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out);
+}
diff --git a/src/mingw/device.c b/src/mingw/device.c
index d8aabcc4..4a962fe4 100644
--- a/src/mingw/device.c
+++ b/src/mingw/device.c
@@ -1,304 +1,225 @@
-/*
- device.c -- Interaction with CIPE driver in a MinGW environment
- Copyright (C) 2002-2003 Ivo Timmermans <ivo@o2w.nl>,
- 2002-2003 Guus Sliepen <guus@sliepen.eu.org>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id: device.c,v 1.1.2.2 2003/07/22 20:55:21 guus Exp $
-*/
-
-#error "Device driver for MinGW environment not written yet!"
-
-#include "system.h"
-
-#include <winioctl.h>
-
-#include "conf.h"
-#include "logger.h"
-#include "net.h"
-#include "route.h"
-#include "utils.h"
-#include "xalloc.h"
-
-/* Definitions from CIPE */
-
-#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 USERMODEDEVICEDIR "\\\\.\\"
-#define SYSDEVICEDIR "\\Device\\"
-#define USERDEVICEDIR "\\??\\"
-#define TAPSUFFIX ".tap"
-
-#define PRODUCT_STRING "DKW Heavy Industries VPN Adapter."
-#define CIPE_SERVICE_NAME "CIPE_Daemon"
-#define CIPE_DRIVER_NAME "CIPE"
-
-#define CIPE_NDIS_MAJOR_VERSION 4
-#define CIPE_NDIS_MINOR_VERSION 0
-
-#ifndef CIPE_DRIVER_MAJOR_VERSION
-# define CIPE_DRIVER_MAJOR_VERSION 2
-#endif
-
-#ifndef CIPE_DRIVER_MINOR_VERSION
-# define CIPE_DRIVER_MINOR_VERSION 1
-#endif
-
-#ifndef CIPE_MAC_ROOT_ADDRESS
-# define CIPE_MAC_ROOT_ADDRESS "8:0:58:0:0:1"
-#endif
-
-#define CIPE_CONTROL_CODE(request,method) CTL_CODE (FILE_DEVICE_PHYSICAL_NETCARD | 8000, request, method, FILE_ANY_ACCESS)
-
-#define CIPE_IOCTL_GET_LASTMAC CIPE_CONTROL_CODE (0, METHOD_BUFFERED)
-#define CIPE_IOCTL_GET_MAC CIPE_CONTROL_CODE (1, METHOD_BUFFERED)
-#define CIPE_IOCTL_SET_STATISTICS CIPE_CONTROL_CODE (2, METHOD_BUFFERED)
-
-/* Windows 2000 */
-#define OSTYPE 5
-
-int device_fd = -1;
-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, adapterkey;
- int i;
-
- char adapterid[1024];
- char manufacturer[1024];
- char productname[1024];
- char adaptername[1024];
- char tapname[1024];
- char gelukt = 0;
- long len;
-
- FILETIME filetime;
- bool found = false;
-
- cp();
-
- get_config_string(lookup_config(config_tree, "Device"), &device);
-
- /* Open registry and look for network adapters */
-
- if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, (OSTYPE > 4 ? NETCARD_REG_KEY_2000 : NETCARD_REG_KEY), 0, KEY_READ, &key)) {
- logger(LOG_ERR, _("Unable to read registry"));
- return false;
- }
-
- for (i = 0; ; i++) {
- len = sizeof(adapterid);
- if(RegEnumKeyEx (key, i, adapterid, &len, 0, 0, 0, &filetime))
- break;
-
- /* Find out more about this adapter */
-
- if(RegOpenKeyEx (key, adapterid, 0, KEY_READ, &adapterkey)) {
- logger(LOG_ERR, _("Unable to read registry"));
- return false;
- }
-
- len = sizeof(productname);
- if(RegQueryValueEx(adapterkey, "ProductName", 0, 0, productname, &len))
- goto skip;
-
- len = sizeof(manufacturer);
- if(RegQueryValueEx(adapterkey, "Manufacturer", 0, 0, manufacturer, &len))
- goto skip;
-
- if(!strcmp(productname, "CIPE") && !strcmp(manufacturer, "DKWHeavyIndustries")) {
- if(device && strcmp(adapterid, device))
- continue;
- if(!device)
- device = xstrdup(adapterid);
- found = true;
- break;
- }
-
-skip:
- RegCloseKey (adapterkey);
- }
-
- if(!found) {
- logger(LOG_ERR, _("No CIPE adapters found!"));
- return false;
- }
-
- /* Get adapter name */
-
- len = sizeof(adaptername);
- RegQueryValueEx(adapterkey, (OSTYPE > 4 ? "NetCfgInstanceId" : "ServiceName"), 0, 0, adaptername, &len);
-
- /* FIXME? cipsrvr checks if the device is in use at this point */
-
- /* Try to open the corresponding tap device */
-
- snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, adaptername);
-
- /* 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;
- }
-
- 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];
- int lenin;
-
- handle = CreateFile(tapname, GENERIC_READ, FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM , 0);
-
- if(handle == INVALID_HANDLE_VALUE) {
- logger(LOG_ERR, _("Could not open CIPE tap device for reading!"));
- 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 (handle, buf, MTU, &lenin, NULL);
- write(sp[1], buf, lenin);
- }
- }
-
- /* The parent opens the tap device for writing. */
-
- 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!"));
- return false;
- }
-
- device_fd = sp[0];
-
- /* Get MAC address from tap device */
-
- if(routing_mode == RMODE_ROUTER) {
- DeviceIoControl (handle, CIPE_IOCTL_GET_MAC, mymac.x, sizeof(mymac.x), mymac.x, sizeof(mymac.x), &len, 0);
- overwrite_mac = 1;
- }
-
- read(device_fd, &gelukt, 1);
- if(gelukt != 1) {
- logger(LOG_DEBUG, "Tap reader failed!");
- return false;
- }
-
- if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
- iface = device;
-
- device_info = _("Cygwin CIPE device");
-
- logger(LOG_INFO, _("%s is a %s"), device, device_info);
-
- return true;
-}
-
-void close_device(void)
-{
- cp();
-
- close(sp[0]);
- close(sp[1]);
- CloseHandle(handle);
-
- kill(reader_pid, SIGKILL);
-}
-
-bool read_packet(vpn_packet_t *packet)
-{
- int lenin;
-
- cp();
-
- if((lenin = read(sp[0], packet->data, MTU)) <= 0) {
- logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
- device, strerror(errno));
- return false;
- }
-
- packet->len = lenin;
-
- device_total_in += packet->len;
-
- ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
- device_info);
-
- return true;
-}
-
-bool write_packet(vpn_packet_t *packet)
-{
- int 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);
- return false;
- }
-
- device_total_out += packet->len;
-
- return true;
-}
-
-void dump_device_stats(void)
-{
- cp();
-
- logger(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);
- logger(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);
- logger(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out);
-}
+/*
+ device.c -- Interaction with CIPE driver in a MinGW environment
+ Copyright (C) 2002-2003 Ivo Timmermans <ivo@o2w.nl>,
+ 2002-2003 Guus Sliepen <guus@sliepen.eu.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ $Id: device.c,v 1.1.2.3 2003/07/28 21:54:03 guus Exp $
+*/
+
+#include "system.h"
+
+#include <windows.h>
+#include <winioctl.h>
+
+#include "conf.h"
+#include "logger.h"
+#include "net.h"
+#include "route.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)
+
+/* FIXME: This only works for Windows 2000 */
+#define OSTYPE 5
+
+HANDLE device_fd = INVALID_HANDLE_VALUE;
+char *device = NULL;
+char *iface = NULL;
+char *device_info = NULL;
+
+int device_total_in = 0;
+int device_total_out = 0;
+
+bool setup_device(void)
+{
+ HKEY key, key2;
+ int i;
+
+ char regpath[1024];
+ char adapterid[1024];
+ char adaptername[1024];
+ char tapname[1024];
+ char gelukt = 0;
+ long len;
+
+ bool found = false;
+
+ cp();
+
+ 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, REG_CONTROL_NET, 0, KEY_READ, &key)) {
+ logger(LOG_ERR, _("Unable to read registry"));
+ return false;
+ }
+
+ for (i = 0; ; i++) {
+ len = sizeof(adapterid);
+ if(RegEnumKeyEx(key, i, adapterid, &len, 0, 0, 0, NULL))
+ break;
+
+ if(device) {
+ if(!strcmp(device, adapterid)) {
+ found = true;
+ break;
+ } else
+ 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;
+ break;
+ } else
+ continue;
+ }
+
+ 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) {
+ found = true;
+ break;
+ }
+ }
+
+ if(!found) {
+ logger(LOG_ERR, _("No Windows tap device found!"));
+ return false;
+ }
+
+ device = adapterid;
+ iface = adaptername;
+
+ /* Try to open the corresponding tap device */
+
+ if(device_fd == 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);
+ }
+
+ if(device_fd == INVALID_HANDLE_VALUE) {
+ logger(LOG_ERR, _("%s (%s) is no a usable Windows tap device!"), device, iface);
+ 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!"));
+ return false;
+ }
+
+ if(routing_mode == RMODE_ROUTER) {
+ overwrite_mac = 1;
+ }
+
+ 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 true;
+}
+
+void close_device(void)
+{
+ cp();
+
+ CloseHandle(device_fd);
+}
+
+bool read_packet(vpn_packet_t *packet)
+{
+ int lenin;
+
+ cp();
+
+ if(!ReadFile(device_fd, packet->data, MTU, &lenin, NULL)) {
+ logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
+ device, strerror(errno));
+ return false;
+ }
+
+ packet->len = lenin;
+
+ device_total_in += packet->len;
+
+ ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
+ device_info);
+
+ return true;
+}
+
+bool write_packet(vpn_packet_t *packet)
+{
+ int lenout;
+
+ 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);
+ return false;
+ }
+
+ device_total_out += packet->len;
+
+ return true;
+}
+
+void dump_device_stats(void)
+{
+ cp();
+
+ logger(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);
+ logger(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);
+ logger(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out);
+}