X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fmingw%2Fdevice.c;h=5494796a11ff289d544650ac3ee545d9a6234503;hp=dfda08951f01de73ab8b47828004042a47f19771;hb=b069da90d67b49dce041f513a3855b8da3d82f80;hpb=721e4caee0f7c6e003c297c95fb6d93bd4102219 diff --git a/src/mingw/device.c b/src/mingw/device.c index dfda0895..5494796a 100644 --- a/src/mingw/device.c +++ b/src/mingw/device.c @@ -1,7 +1,7 @@ /* device.c -- Interaction with Windows tap driver in a MinGW environment - Copyright (C) 2002-2003 Ivo Timmermans , - 2002-2003 Guus Sliepen + Copyright (C) 2002-2005 Ivo Timmermans, + 2002-2007 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 1.1.2.6 2003/07/29 22:59:01 guus Exp $ + $Id$ */ #include "system.h" @@ -32,70 +32,64 @@ #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 = 0; -HANDLE device_handle = INVALID_HANDLE_VALUE; +static HANDLE device_handle = INVALID_HANDLE_VALUE; char *device = NULL; char *iface = NULL; -char *device_info = NULL; +static char *device_info = NULL; + +static int device_total_in = 0; +static int device_total_out = 0; + +extern char *myport; -int device_total_in = 0; -int device_total_out = 0; +static struct packetbuf { + uint8_t data[MTU]; + length_t len; +} *bufs; -DWORD WINAPI tapreader(void *bla) { +static int nbufs = 64; + +static DWORD WINAPI tapreader(void *bla) { int sock, err, status; struct addrinfo *ai; struct addrinfo hint = { .ai_family = AF_UNSPEC, - .ai_socktype = SOCK_DGRAM, - .ai_protocol = IPPROTO_UDP, + .ai_socktype = SOCK_STREAM, + .ai_protocol = IPPROTO_TCP, .ai_flags = 0, }; - char buf[MTU]; + unsigned char bufno = 0; long len; OVERLAPPED overlapped; /* Open a socket to the parent process */ - err = getaddrinfo(NULL, "12345", &hint, &ai); + err = getaddrinfo(NULL, myport, &hint, &ai); if(err || !ai) { logger(LOG_ERR, _("System call `%s' failed: %s"), "getaddrinfo", gai_strerror(errno)); return -1; } - sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); - - freeaddrinfo(ai); + sock = socket(ai->ai_family, SOCK_STREAM, IPPROTO_TCP); if(sock < 0) { logger(LOG_ERR, _("System call `%s' failed: %s"), "socket", strerror(errno)); + freeaddrinfo(ai); return -1; } if(connect(sock, ai->ai_addr, ai->ai_addrlen)) { logger(LOG_ERR, _("System call `%s' failed: %s"), "connect", strerror(errno)); + freeaddrinfo(ai); return -1; } + freeaddrinfo(ai); + logger(LOG_DEBUG, _("Tap reader running")); /* Read from tap device and send to parent */ @@ -107,7 +101,7 @@ DWORD WINAPI tapreader(void *bla) { overlapped.OffsetHigh = 0; ResetEvent(overlapped.hEvent); - status = ReadFile(device_handle, buf, sizeof(buf), &len, &overlapped); + status = ReadFile(device_handle, bufs[bufno].data, MTU, &len, &overlapped); if(!status) { if(GetLastError() == ERROR_IO_PENDING) { @@ -121,8 +115,11 @@ DWORD WINAPI tapreader(void *bla) { } } - if(send(sock, buf, len, 0) <= 0) + bufs[bufno].len = len; + if(send(sock, &bufno, 1, 0) <= 0) return -1; + if(++bufno >= nbufs) + bufno = 0; } } @@ -136,6 +133,7 @@ bool setup_device(void) char adaptername[1024]; char tapname[1024]; long len; + unsigned long status; bool found = false; @@ -145,9 +143,9 @@ bool setup_device(void) struct addrinfo *ai; struct addrinfo hint = { .ai_family = AF_UNSPEC, - .ai_socktype = SOCK_DGRAM, - .ai_protocol = IPPROTO_UDP, - .ai_flags = AI_PASSIVE, + .ai_socktype = SOCK_STREAM, + .ai_protocol = IPPROTO_TCP, + .ai_flags = 0, }; cp(); @@ -157,8 +155,8 @@ 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; } @@ -169,13 +167,18 @@ bool setup_device(void) /* Find out more about this adapter */ - snprintf(regpath, sizeof(regpath), "%s\\%s\\Connection", REG_CONTROL_NET, adapterid); + 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); - RegQueryValueEx(key2, "Name", 0, 0, adaptername, &len); + err = RegQueryValueEx(key2, "Name", 0, 0, adaptername, &len); + + RegCloseKey(key2); + + if(err) + continue; if(device) { if(!strcmp(device, adapterid)) { @@ -201,6 +204,8 @@ bool setup_device(void) } } + RegCloseKey(key); + if(!found) { logger(LOG_ERR, _("No Windows tap device found!")); return false; @@ -220,14 +225,14 @@ bool setup_device(void) } if(device_handle == INVALID_HANDLE_VALUE) { - logger(LOG_ERR, _("%s (%s) is no a usable Windows tap device!"), device, iface); + logger(LOG_ERR, _("%s (%s) is not a usable Windows tap device: %s"), device, iface, winerror(GetLastError())); return false; } /* Get MAC address from 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!")); + logger(LOG_ERR, _("Could not get MAC address from Windows tap device %s (%s): %s"), device, iface, winerror(GetLastError())); return false; } @@ -235,16 +240,26 @@ bool setup_device(void) overwrite_mac = 1; } + /* Set up ringbuffer */ + + get_config_int(lookup_config(config_tree, "RingBufferSize"), &nbufs); + if(nbufs <= 1) + nbufs = 1; + else if(nbufs > 256) + nbufs = 256; + + bufs = xmalloc_and_zero(nbufs * sizeof *bufs); + /* Create a listening socket */ - err = getaddrinfo(NULL, "12345", &hint, &ai); + err = getaddrinfo(NULL, myport, &hint, &ai); if(err || !ai) { logger(LOG_ERR, _("System call `%s' failed: %s"), "getaddrinfo", gai_strerror(errno)); return false; } - sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); + sock = socket(ai->ai_family, SOCK_STREAM, IPPROTO_TCP); if(sock < 0) { logger(LOG_ERR, _("System call `%s' failed: %s"), "socket", strerror(errno)); @@ -268,7 +283,7 @@ bool setup_device(void) thread = CreateThread(NULL, 0, tapreader, NULL, 0, NULL); if(!thread) { - logger(LOG_ERR, _("System call `%s' failed: %s"), "CreateThread", strerror(errno)); + logger(LOG_ERR, _("System call `%s' failed: %s"), "CreateThread", winerror(GetLastError())); return false; } @@ -281,6 +296,11 @@ bool setup_device(void) closesocket(sock); + /* Set media status for newer TAP-Win32 devices */ + + status = true; + DeviceIoControl(device_handle, TAP_IOCTL_SET_MEDIA_STATUS, &status, sizeof(status), &status, sizeof(status), &len, NULL); + device_info = _("Windows tap device"); logger(LOG_INFO, _("%s (%s) is a %s"), device, iface, device_info); @@ -297,17 +317,18 @@ void close_device(void) bool read_packet(vpn_packet_t *packet) { - int lenin; + unsigned char bufno; cp(); - if((lenin = recv(device_fd, packet->data, MTU, 0)) <= 0) { + if((recv(device_fd, &bufno, 1, 0)) <= 0) { logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info, device, strerror(errno)); return false; } - packet->len = lenin; + packet->len = bufs[bufno].len; + memcpy(packet->data, bufs[bufno].data, bufs[bufno].len); device_total_in += packet->len; @@ -328,7 +349,7 @@ bool write_packet(vpn_packet_t *packet) packet->len, device_info); if(!WriteFile(device_handle, packet->data, packet->len, &lenout, &overlapped)) { - logger(LOG_ERR, _("Error while writing to %s %s"), device_info, device); + logger(LOG_ERR, _("Error while writing to %s %s: %s"), device_info, device, winerror(GetLastError())); return false; }