X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fcygwin%2Fdevice.c;h=acb0cfaeb5d4c9199be430d48dc372642e5a33bd;hp=131a786b1826aecce709ff47ac759cd62dd6869c;hb=b069da90d67b49dce041f513a3855b8da3d82f80;hpb=c15e8a96bf7e45adf750b7a36b0e8446ea049468 diff --git a/src/cygwin/device.c b/src/cygwin/device.c index 131a786b..acb0cfae 100644 --- a/src/cygwin/device.c +++ b/src/cygwin/device.c @@ -1,7 +1,7 @@ /* - device.c -- Interaction with CIPE driver in a Cygwin environment - Copyright (C) 2002-2003 Ivo Timmermans , - 2002-2003 Guus Sliepen + device.c -- Interaction with Windows tap driver in a Cygwin environment + Copyright (C) 2002-2005 Ivo Timmermans, + 2002-2006 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 @@ -17,7 +17,7 @@ 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 $ + $Id$ */ #include "system.h" @@ -32,42 +32,24 @@ #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 +#include "mingw/common.h" int device_fd = -1; +static HANDLE device_handle = INVALID_HANDLE_VALUE; char *device = NULL; char *iface = NULL; -char *device_info = NULL; +static char *device_info = NULL; -int device_total_in = 0; -int device_total_out = 0; +static int device_total_in = 0; +static int device_total_out = 0; -HANDLE handle; - -pid_t reader_pid; -int sp[2]; +static pid_t reader_pid; +static int sp[2]; bool setup_device(void) { HKEY key, key2; - int i; + int i, err; char regpath[1024]; char adapterid[1024]; @@ -85,8 +67,8 @@ bool setup_device(void) /* 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")); + if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, NETWORK_CONNECTIONS_KEY, 0, KEY_READ, &key)) { + logger(LOG_ERR, _("Unable to read registry: %s"), winerror(GetLastError())); return false; } @@ -95,6 +77,21 @@ bool setup_device(void) if(RegEnumKeyEx(key, i, adapterid, &len, 0, 0, 0, NULL)) break; + /* Find out more about this adapter */ + + snprintf(regpath, sizeof(regpath), "%s\\%s\\Connection", NETWORK_CONNECTIONS_KEY, 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; @@ -103,18 +100,6 @@ bool setup_device(void) 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; @@ -124,21 +109,26 @@ bool setup_device(void) } 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); @@ -153,10 +143,10 @@ bool setup_device(void) /* 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; } @@ -164,8 +154,8 @@ bool setup_device(void) /* 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; } @@ -187,12 +177,14 @@ bool setup_device(void) 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); @@ -208,25 +200,22 @@ bool setup_device(void) /* 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) @@ -235,7 +224,7 @@ void close_device(void) close(sp[0]); close(sp[1]); - CloseHandle(handle); + CloseHandle(device_handle); kill(reader_pid, SIGKILL); } @@ -264,15 +253,15 @@ bool read_packet(vpn_packet_t *packet) 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; }