2 device.c -- Interaction with CIPE driver in a MinGW environment
\r
3 Copyright (C) 2002-2003 Ivo Timmermans <ivo@o2w.nl>,
\r
4 2002-2003 Guus Sliepen <guus@sliepen.eu.org>
\r
6 This program is free software; you can redistribute it and/or modify
\r
7 it under the terms of the GNU General Public License as published by
\r
8 the Free Software Foundation; either version 2 of the License, or
\r
9 (at your option) any later version.
\r
11 This program is distributed in the hope that it will be useful,
\r
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
\r
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\r
14 GNU General Public License for more details.
\r
16 You should have received a copy of the GNU General Public License
\r
17 along with this program; if not, write to the Free Software
\r
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
\r
20 $Id: device.c,v 1.1.2.1 2003/07/21 15:51:00 guus Exp $
\r
23 #error "Device driver for MinGW environment not written yet!"
\r
27 #include <winioctl.h>
\r
36 /* Definitions from CIPE */
\r
38 #define NETCARD_REG_KEY_2000 "SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E972-E325-11CE-BFC1-08002BE10318}"
\r
39 #define NETCARD_REG_KEY "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\NetworkCards"
\r
40 #define REG_SERVICE_KEY "SYSTEM\\CurrentControlSet\\Services"
\r
42 #define USERMODEDEVICEDIR "\\\\.\\"
\r
43 #define SYSDEVICEDIR "\\Device\\"
\r
44 #define USERDEVICEDIR "\\??\\"
\r
45 #define TAPSUFFIX ".tap"
\r
47 #define PRODUCT_STRING "DKW Heavy Industries VPN Adapter."
\r
48 #define CIPE_SERVICE_NAME "CIPE_Daemon"
\r
49 #define CIPE_DRIVER_NAME "CIPE"
\r
51 #define CIPE_NDIS_MAJOR_VERSION 4
\r
52 #define CIPE_NDIS_MINOR_VERSION 0
\r
54 #ifndef CIPE_DRIVER_MAJOR_VERSION
\r
55 # define CIPE_DRIVER_MAJOR_VERSION 2
\r
58 #ifndef CIPE_DRIVER_MINOR_VERSION
\r
59 # define CIPE_DRIVER_MINOR_VERSION 1
\r
62 #ifndef CIPE_MAC_ROOT_ADDRESS
\r
63 # define CIPE_MAC_ROOT_ADDRESS "8:0:58:0:0:1"
\r
66 #define CIPE_CONTROL_CODE(request,method) CTL_CODE (FILE_DEVICE_PHYSICAL_NETCARD | 8000, request, method, FILE_ANY_ACCESS)
\r
68 #define CIPE_IOCTL_GET_LASTMAC CIPE_CONTROL_CODE (0, METHOD_BUFFERED)
\r
69 #define CIPE_IOCTL_GET_MAC CIPE_CONTROL_CODE (1, METHOD_BUFFERED)
\r
70 #define CIPE_IOCTL_SET_STATISTICS CIPE_CONTROL_CODE (2, METHOD_BUFFERED)
\r
76 char *device = NULL;
\r
78 char *device_info = NULL;
\r
80 int device_total_in = 0;
\r
81 int device_total_out = 0;
\r
88 int setup_device(void)
\r
90 HKEY key, key2, adapterkey;
\r
93 char adapterid[1024];
\r
94 char manufacturer[1024];
\r
95 char productname[1024];
\r
96 char adaptername[1024];
\r
102 bool found = false;
\r
106 get_config_string(lookup_config(config_tree, "Device"), &device);
\r
108 /* Open registry and look for network adapters */
\r
110 if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, (OSTYPE > 4 ? NETCARD_REG_KEY_2000 : NETCARD_REG_KEY), 0, KEY_READ, &key)) {
\r
111 logger(LOG_ERR, _("Unable to read registry"));
\r
115 for (i = 0; ; i++) {
\r
116 len = sizeof(adapterid);
\r
117 if(RegEnumKeyEx (key, i, adapterid, &len, 0, 0, 0, &filetime))
\r
120 /* Find out more about this adapter */
\r
122 if(RegOpenKeyEx (key, adapterid, 0, KEY_READ, &adapterkey)) {
\r
123 logger(LOG_ERR, _("Unable to read registry"));
\r
127 len = sizeof(productname);
\r
128 if(RegQueryValueEx(adapterkey, "ProductName", 0, 0, productname, &len))
\r
131 len = sizeof(manufacturer);
\r
132 if(RegQueryValueEx(adapterkey, "Manufacturer", 0, 0, manufacturer, &len))
\r
135 if(!strcmp(productname, "CIPE") && !strcmp(manufacturer, "DKWHeavyIndustries")) {
\r
136 if(device && strcmp(adapterid, device))
\r
139 device = xstrdup(adapterid);
\r
145 RegCloseKey (adapterkey);
\r
149 logger(LOG_ERR, _("No CIPE adapters found!"));
\r
153 /* Get adapter name */
\r
155 len = sizeof(adaptername);
\r
156 RegQueryValueEx(adapterkey, (OSTYPE > 4 ? "NetCfgInstanceId" : "ServiceName"), 0, 0, adaptername, &len);
\r
158 /* FIXME? cipsrvr checks if the device is in use at this point */
\r
160 /* Try to open the corresponding tap device */
\r
162 snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, adaptername);
\r
164 /* Now we are going to open this device twice: once for reading and once for writing.
\r
165 We do this because apparently it isn't possible to check for activity in the select() loop.
\r
166 Furthermore I don't really know how to do it the "Windows" way. */
\r
168 if(socketpair(AF_UNIX, SOCK_DGRAM, PF_UNIX, sp)) {
\r
169 logger(LOG_DEBUG, _("System call `%s' failed: %s"), "socketpair", strerror(errno));
\r
173 reader_pid = fork();
\r
175 if(reader_pid == -1) {
\r
176 logger(LOG_DEBUG, _("System call `%s' failed: %s"), "fork", strerror(errno));
\r
181 /* The child opens the tap device for reading, blocking.
\r
182 It passes everything it reads to the socket. */
\r
187 handle = CreateFile(tapname, GENERIC_READ, FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM , 0);
\r
189 if(handle == INVALID_HANDLE_VALUE) {
\r
190 logger(LOG_ERR, _("Could not open CIPE tap device for reading!"));
\r
192 write(sp[1], buf, 1);
\r
196 logger(LOG_DEBUG, _("Tap reader forked and running."));
\r
198 /* Notify success */
\r
201 write(sp[1], buf, 1);
\r
206 ReadFile (handle, buf, MTU, &lenin, NULL);
\r
207 write(sp[1], buf, lenin);
\r
211 /* The parent opens the tap device for writing. */
\r
213 handle = CreateFile(tapname, GENERIC_WRITE, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM , 0);
\r
215 if(handle == INVALID_HANDLE_VALUE) {
\r
216 logger(LOG_ERR, _("Could not open CIPE tap device for writing!"));
\r
222 /* Get MAC address from tap device */
\r
224 if(routing_mode == RMODE_ROUTER) {
\r
225 DeviceIoControl (handle, CIPE_IOCTL_GET_MAC, mymac.x, sizeof(mymac.x), mymac.x, sizeof(mymac.x), &len, 0);
\r
229 read(device_fd, &gelukt, 1);
\r
231 logger(LOG_DEBUG, "Tap reader failed!");
\r
235 if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
\r
238 device_info = _("Cygwin CIPE device");
\r
240 logger(LOG_INFO, _("%s is a %s"), device, device_info);
\r
245 void close_device(void)
\r
251 CloseHandle(handle);
\r
253 kill(reader_pid, SIGKILL);
\r
256 int read_packet(vpn_packet_t *packet)
\r
262 if((lenin = read(sp[0], packet->data, MTU)) <= 0) {
\r
263 logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
\r
264 device, strerror(errno));
\r
268 packet->len = lenin;
\r
270 device_total_in += packet->len;
\r
272 ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
\r
278 int write_packet(vpn_packet_t *packet)
\r
284 ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"),
\r
285 packet->len, device_info);
\r
287 if(!WriteFile (handle, packet->data, packet->len, &lenout, NULL)) {
\r
288 logger(LOG_ERR, "Error while writing to %s %s", device_info, device);
\r
292 device_total_out += packet->len;
\r
297 void dump_device_stats(void)
\r
301 logger(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);
\r
302 logger(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);
\r
303 logger(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out);
\r