--- /dev/null
+/*\r
+ device.c -- Interaction with CIPE driver in a MinGW environment\r
+ Copyright (C) 2002-2003 Ivo Timmermans <ivo@o2w.nl>,\r
+ 2002-2003 Guus Sliepen <guus@sliepen.eu.org>\r
+\r
+ This program is free software; you can redistribute it and/or modify\r
+ it under the terms of the GNU General Public License as published by\r
+ the Free Software Foundation; either version 2 of the License, or\r
+ (at your option) any later version.\r
+\r
+ This program is distributed in the hope that it will be useful,\r
+ but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ GNU General Public License for more details.\r
+\r
+ You should have received a copy of the GNU General Public License\r
+ along with this program; if not, write to the Free Software\r
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.\r
+\r
+ $Id: device.c,v 1.1.2.1 2003/07/21 15:51:00 guus Exp $\r
+*/\r
+\r
+#error "Device driver for MinGW environment not written yet!"\r
+\r
+#include "system.h"\r
+\r
+#include <winioctl.h>\r
+\r
+#include "conf.h"\r
+#include "logger.h"\r
+#include "net.h"\r
+#include "route.h"\r
+#include "utils.h"\r
+#include "xalloc.h"\r
+\r
+/* Definitions from CIPE */\r
+\r
+#define NETCARD_REG_KEY_2000 "SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E972-E325-11CE-BFC1-08002BE10318}"\r
+#define NETCARD_REG_KEY "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\NetworkCards"\r
+#define REG_SERVICE_KEY "SYSTEM\\CurrentControlSet\\Services"\r
+\r
+#define USERMODEDEVICEDIR "\\\\.\\"\r
+#define SYSDEVICEDIR "\\Device\\"\r
+#define USERDEVICEDIR "\\??\\"\r
+#define TAPSUFFIX ".tap"\r
+\r
+#define PRODUCT_STRING "DKW Heavy Industries VPN Adapter."\r
+#define CIPE_SERVICE_NAME "CIPE_Daemon"\r
+#define CIPE_DRIVER_NAME "CIPE"\r
+\r
+#define CIPE_NDIS_MAJOR_VERSION 4\r
+#define CIPE_NDIS_MINOR_VERSION 0\r
+\r
+#ifndef CIPE_DRIVER_MAJOR_VERSION\r
+# define CIPE_DRIVER_MAJOR_VERSION 2\r
+#endif\r
+\r
+#ifndef CIPE_DRIVER_MINOR_VERSION\r
+# define CIPE_DRIVER_MINOR_VERSION 1\r
+#endif\r
+\r
+#ifndef CIPE_MAC_ROOT_ADDRESS\r
+# define CIPE_MAC_ROOT_ADDRESS "8:0:58:0:0:1"\r
+#endif\r
+\r
+#define CIPE_CONTROL_CODE(request,method) CTL_CODE (FILE_DEVICE_PHYSICAL_NETCARD | 8000, request, method, FILE_ANY_ACCESS)\r
+\r
+#define CIPE_IOCTL_GET_LASTMAC CIPE_CONTROL_CODE (0, METHOD_BUFFERED)\r
+#define CIPE_IOCTL_GET_MAC CIPE_CONTROL_CODE (1, METHOD_BUFFERED)\r
+#define CIPE_IOCTL_SET_STATISTICS CIPE_CONTROL_CODE (2, METHOD_BUFFERED)\r
+\r
+/* Windows 2000 */\r
+#define OSTYPE 5\r
+\r
+int device_fd = -1;\r
+char *device = NULL;\r
+char *iface = NULL;\r
+char *device_info = NULL;\r
+\r
+int device_total_in = 0;\r
+int device_total_out = 0;\r
+\r
+HANDLE handle;\r
+\r
+pid_t reader_pid;\r
+int sp[2];\r
+\r
+int setup_device(void)\r
+{\r
+ HKEY key, key2, adapterkey;\r
+ int i;\r
+\r
+ char adapterid[1024];\r
+ char manufacturer[1024];\r
+ char productname[1024];\r
+ char adaptername[1024];\r
+ char tapname[1024];\r
+ char gelukt = 0;\r
+ long len;\r
+\r
+ FILETIME filetime;\r
+ bool found = false;\r
+\r
+ cp();\r
+\r
+ get_config_string(lookup_config(config_tree, "Device"), &device);\r
+\r
+ /* Open registry and look for network adapters */\r
+\r
+ if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, (OSTYPE > 4 ? NETCARD_REG_KEY_2000 : NETCARD_REG_KEY), 0, KEY_READ, &key)) {\r
+ logger(LOG_ERR, _("Unable to read registry"));\r
+ return -1;\r
+ }\r
+\r
+ for (i = 0; ; i++) {\r
+ len = sizeof(adapterid);\r
+ if(RegEnumKeyEx (key, i, adapterid, &len, 0, 0, 0, &filetime))\r
+ break;\r
+\r
+ /* Find out more about this adapter */\r
+\r
+ if(RegOpenKeyEx (key, adapterid, 0, KEY_READ, &adapterkey)) {\r
+ logger(LOG_ERR, _("Unable to read registry"));\r
+ return -1;\r
+ }\r
+\r
+ len = sizeof(productname);\r
+ if(RegQueryValueEx(adapterkey, "ProductName", 0, 0, productname, &len))\r
+ goto skip;\r
+\r
+ len = sizeof(manufacturer);\r
+ if(RegQueryValueEx(adapterkey, "Manufacturer", 0, 0, manufacturer, &len))\r
+ goto skip;\r
+\r
+ if(!strcmp(productname, "CIPE") && !strcmp(manufacturer, "DKWHeavyIndustries")) {\r
+ if(device && strcmp(adapterid, device))\r
+ continue;\r
+ if(!device)\r
+ device = xstrdup(adapterid);\r
+ found = true;\r
+ break;\r
+ }\r
+ \r
+skip:\r
+ RegCloseKey (adapterkey);\r
+ }\r
+\r
+ if(!found) {\r
+ logger(LOG_ERR, _("No CIPE adapters found!"));\r
+ return -1;\r
+ }\r
+\r
+ /* Get adapter name */\r
+\r
+ len = sizeof(adaptername);\r
+ RegQueryValueEx(adapterkey, (OSTYPE > 4 ? "NetCfgInstanceId" : "ServiceName"), 0, 0, adaptername, &len);\r
+\r
+ /* FIXME? cipsrvr checks if the device is in use at this point */\r
+\r
+ /* Try to open the corresponding tap device */\r
+\r
+ snprintf(tapname, sizeof(tapname), USERMODEDEVICEDIR "%s" TAPSUFFIX, adaptername);\r
+ \r
+ /* Now we are going to open this device twice: once for reading and once for writing.\r
+ We do this because apparently it isn't possible to check for activity in the select() loop.\r
+ Furthermore I don't really know how to do it the "Windows" way. */\r
+\r
+ if(socketpair(AF_UNIX, SOCK_DGRAM, PF_UNIX, sp)) {\r
+ logger(LOG_DEBUG, _("System call `%s' failed: %s"), "socketpair", strerror(errno));\r
+ return -1;\r
+ }\r
+\r
+ reader_pid = fork();\r
+\r
+ if(reader_pid == -1) {\r
+ logger(LOG_DEBUG, _("System call `%s' failed: %s"), "fork", strerror(errno));\r
+ return -1;\r
+ }\r
+\r
+ if(!reader_pid) {\r
+ /* The child opens the tap device for reading, blocking.\r
+ It passes everything it reads to the socket. */\r
+ \r
+ char buf[MTU];\r
+ int lenin;\r
+\r
+ handle = CreateFile(tapname, GENERIC_READ, FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM , 0);\r
+\r
+ if(handle == INVALID_HANDLE_VALUE) {\r
+ logger(LOG_ERR, _("Could not open CIPE tap device for reading!"));\r
+ buf[0] = 0;\r
+ write(sp[1], buf, 1);\r
+ exit(1);\r
+ }\r
+\r
+ logger(LOG_DEBUG, _("Tap reader forked and running."));\r
+\r
+ /* Notify success */\r
+\r
+ buf[0] = 1;\r
+ write(sp[1], buf, 1);\r
+\r
+ /* Pass packets */\r
+\r
+ for(;;) {\r
+ ReadFile (handle, buf, MTU, &lenin, NULL);\r
+ write(sp[1], buf, lenin);\r
+ }\r
+ }\r
+\r
+ /* The parent opens the tap device for writing. */\r
+ \r
+ handle = CreateFile(tapname, GENERIC_WRITE, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM , 0);\r
+ \r
+ if(handle == INVALID_HANDLE_VALUE) {\r
+ logger(LOG_ERR, _("Could not open CIPE tap device for writing!"));\r
+ return -1;\r
+ }\r
+\r
+ device_fd = sp[0];\r
+\r
+ /* Get MAC address from tap device */\r
+\r
+ if(routing_mode == RMODE_ROUTER) {\r
+ DeviceIoControl (handle, CIPE_IOCTL_GET_MAC, mymac.x, sizeof(mymac.x), mymac.x, sizeof(mymac.x), &len, 0);\r
+ overwrite_mac = 1;\r
+ }\r
+\r
+ read(device_fd, &gelukt, 1);\r
+ if(gelukt != 1) {\r
+ logger(LOG_DEBUG, "Tap reader failed!");\r
+ return -1;\r
+ }\r
+\r
+ if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))\r
+ iface = device;\r
+\r
+ device_info = _("Cygwin CIPE device");\r
+\r
+ logger(LOG_INFO, _("%s is a %s"), device, device_info);\r
+\r
+ return 0;\r
+}\r
+\r
+void close_device(void)\r
+{\r
+ cp();\r
+\r
+ close(sp[0]);\r
+ close(sp[1]);\r
+ CloseHandle(handle);\r
+\r
+ kill(reader_pid, SIGKILL);\r
+}\r
+\r
+int read_packet(vpn_packet_t *packet)\r
+{\r
+ int lenin;\r
+\r
+ cp();\r
+\r
+ if((lenin = read(sp[0], packet->data, MTU)) <= 0) {\r
+ logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,\r
+ device, strerror(errno));\r
+ return -1;\r
+ }\r
+ \r
+ packet->len = lenin;\r
+\r
+ device_total_in += packet->len;\r
+\r
+ ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,\r
+ device_info);\r
+\r
+ return 0;\r
+}\r
+\r
+int write_packet(vpn_packet_t *packet)\r
+{\r
+ int lenout;\r
+\r
+ cp();\r
+\r
+ ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"),\r
+ packet->len, device_info);\r
+\r
+ if(!WriteFile (handle, packet->data, packet->len, &lenout, NULL)) {\r
+ logger(LOG_ERR, "Error while writing to %s %s", device_info, device);\r
+ return -1;\r
+ }\r
+\r
+ device_total_out += packet->len;\r
+\r
+ return 0;\r
+}\r
+\r
+void dump_device_stats(void)\r
+{\r
+ cp();\r
+\r
+ logger(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);\r
+ logger(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);\r
+ logger(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out);\r
+}\r
projects / oweals / tinc.git / commitdiff