X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fmingw%2Fdevice.c;h=4a962fe47808763f62bb87325f6a395e01302103;hp=d8aabcc4526bc6cdd187d25f7aaa61fa3682d1e1;hb=c15e8a96bf7e45adf750b7a36b0e8446ea049468;hpb=83263b74460656ba557fd9bb84dc27258549e9cd 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 , - 2002-2003 Guus Sliepen - - 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 - -#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 , + 2002-2003 Guus Sliepen + + 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 +#include + +#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); +}