diff options
Diffstat (limited to 'tap-win32')
| -rwxr-xr-x | tap-win32/MAKEFILE | 6 | ||||
| -rwxr-xr-x | tap-win32/SOURCES.in | 64 | ||||
| -rwxr-xr-x | tap-win32/common.h | 82 | ||||
| -rwxr-xr-x | tap-win32/constants.h | 52 | ||||
| -rwxr-xr-x | tap-win32/dhcp.c | 599 | ||||
| -rwxr-xr-x | tap-win32/dhcp.h | 164 | ||||
| -rwxr-xr-x | tap-win32/endian.h | 35 | ||||
| -rwxr-xr-x | tap-win32/error.c | 378 | ||||
| -rwxr-xr-x | tap-win32/error.h | 88 | ||||
| -rwxr-xr-x | tap-win32/hexdump.c | 69 | ||||
| -rwxr-xr-x | tap-win32/hexdump.h | 63 | ||||
| -rwxr-xr-x | tap-win32/i386/OemWin2k.inf.in | 195 | ||||
| -rwxr-xr-x | tap-win32/instance.c | 241 | ||||
| -rwxr-xr-x | tap-win32/lock.h | 75 | ||||
| -rwxr-xr-x | tap-win32/macinfo.c | 154 | ||||
| -rwxr-xr-x | tap-win32/macinfo.h | 38 | ||||
| -rwxr-xr-x | tap-win32/mem.c | 186 | ||||
| -rwxr-xr-x | tap-win32/proto.h | 224 | ||||
| -rwxr-xr-x | tap-win32/prototypes.h | 260 | ||||
| -rwxr-xr-x | tap-win32/resource.rc | 58 | ||||
| -rwxr-xr-x | tap-win32/tapdrvr.c | 3145 | ||||
| -rwxr-xr-x | tap-win32/types.h | 178 |
22 files changed, 0 insertions, 6354 deletions
diff --git a/tap-win32/MAKEFILE b/tap-win32/MAKEFILE deleted file mode 100755 index 6ee4f43..0000000 --- a/tap-win32/MAKEFILE +++ /dev/null @@ -1,6 +0,0 @@ -# -# DO NOT EDIT THIS FILE!!! Edit .\sources. if you want to add a new source -# file to this component. This file merely indirects to the real make file -# that is shared by all the components of NT OS/2 -# -!INCLUDE $(NTMAKEENV)\makefile.def diff --git a/tap-win32/SOURCES.in b/tap-win32/SOURCES.in deleted file mode 100755 index cf030f4..0000000 --- a/tap-win32/SOURCES.in +++ /dev/null @@ -1,64 +0,0 @@ -# Build TAP-Win32 driver. -# Build Command: build -cef - -MAJORCOMP=ntos -MINORCOMP=ndis - -TARGETNAME=@@PRODUCT_TAP_ID@@ -TARGETTYPE=DRIVER -TARGETPATH=. -TARGETLIBS=$(DDK_LIB_PATH)\ndis.lib $(DDK_LIB_PATH)\ntstrsafe.lib -INCLUDES=$(DDK_INCLUDE_PATH) .. - -# The TAP version numbers here must be >= -# PRODUCT_TAP_WIN32_MIN_x values defined in version.m4 -C_DEFINES= -C_DEFINES=$(C_DEFINES) -DTAP_DRIVER_MAJOR_VERSION=@@PRODUCT_TAP_MAJOR_VER@@ -C_DEFINES=$(C_DEFINES) -DTAP_DRIVER_MINOR_VERSION=@@PRODUCT_TAP_MINOR_VER@@ - -# Produce the same symbolic information for both free & checked builds. -# This will allow us to perform full source-level debugging on both -# builds without affecting the free build's performance. -!IF "$(DDKBUILDENV)" != "chk" -NTDEBUGTYPE=both -USE_PDB=1 -!ELSE -NTDEBUGTYPE=both -USE_PDB=1 -!ENDIF - -# Set compiler optimizations: -# /Ox - Full optimization enabled -# /Os - favor speed over size when optimizing -# /Od - Disable all optimizations -# /Oi - Enable optimization for intrinsic functions -# /Fc - Generate mixed assembler/source code files -# -# For both checked and free builds, make sure that any intrinsic -# functions are compiled correctly. To do this, ensure that /Oi -# is selected for both free and checked builds. There is a bug in -# VC++ 6.0 (at least through SP4) where, if you specify any -# intrinsic functions in your code with "#pragma intrinsic" but -# you don't have the /Oi optimization enabled, neither a call -# to the function, nor the intrinsic inline version of the function -# will end up in your object code. This bug only applies to free -# builds, but just to be safe we'll make sure that the flag is -# enabled for all builds. - -!IF "$(DDKBUILDENV)" != "chk" -MSC_OPTIMIZATION=/Ox /Oi /Fc -!ELSE -MSC_OPTIMIZATION=/Od /Oi /Fc -!ENDIF - -# Generate a linker map file just in case we need one for debugging -LINKER_FLAGS=$(LINKER_FLAGS) /INCREMENTAL:NO /MAP /MAPINFO:EXPORTS - -# Generate a browser information file for use in IDE development -#BROWSER_INFO=1 -#BROWSERFILE=$(TARGETNAME).BSC -n - -# Abort compilation on warnings by adding /WX -MSC_WARNING_LEVEL=/W3 - -SOURCES=tapdrvr.c resource.rc diff --git a/tap-win32/common.h b/tap-win32/common.h deleted file mode 100755 index bb8ab90..0000000 --- a/tap-win32/common.h +++ /dev/null @@ -1,82 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -//=============================================== -// This file is included both by OpenVPN and -// the TAP-Win32 driver and contains definitions -// common to both. -//=============================================== - -#ifndef HAVE_CONFIG_H -#include "autodefs.h" -#endif - -//============= -// TAP IOCTLs -//============= - -#define TAP_CONTROL_CODE(request,method) \ - CTL_CODE (FILE_DEVICE_UNKNOWN, request, method, FILE_ANY_ACCESS) - -// Present in 8.1 - -#define TAP_IOCTL_GET_MAC TAP_CONTROL_CODE (1, METHOD_BUFFERED) -#define TAP_IOCTL_GET_VERSION TAP_CONTROL_CODE (2, METHOD_BUFFERED) -#define TAP_IOCTL_GET_MTU TAP_CONTROL_CODE (3, METHOD_BUFFERED) -#define TAP_IOCTL_GET_INFO TAP_CONTROL_CODE (4, METHOD_BUFFERED) -#define TAP_IOCTL_CONFIG_POINT_TO_POINT TAP_CONTROL_CODE (5, METHOD_BUFFERED) -#define TAP_IOCTL_SET_MEDIA_STATUS TAP_CONTROL_CODE (6, METHOD_BUFFERED) -#define TAP_IOCTL_CONFIG_DHCP_MASQ TAP_CONTROL_CODE (7, METHOD_BUFFERED) -#define TAP_IOCTL_GET_LOG_LINE TAP_CONTROL_CODE (8, METHOD_BUFFERED) -#define TAP_IOCTL_CONFIG_DHCP_SET_OPT TAP_CONTROL_CODE (9, METHOD_BUFFERED) - -// Added in 8.2 - -/* obsoletes TAP_IOCTL_CONFIG_POINT_TO_POINT */ -#define TAP_IOCTL_CONFIG_TUN TAP_CONTROL_CODE (10, METHOD_BUFFERED) - -//================= -// Registry keys -//================= - -#define ADAPTER_KEY "SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E972-E325-11CE-BFC1-08002BE10318}" - -#define NETWORK_CONNECTIONS_KEY "SYSTEM\\CurrentControlSet\\Control\\Network\\{4D36E972-E325-11CE-BFC1-08002BE10318}" - -//====================== -// Filesystem prefixes -//====================== - -#define USERMODEDEVICEDIR "\\\\.\\Global\\" -#define SYSDEVICEDIR "\\Device\\" -#define USERDEVICEDIR "\\DosDevices\\Global\\" -#define TAPSUFFIX ".tap" - -//========================================================= -// TAP_COMPONENT_ID -- This string defines the TAP driver -// type -- different component IDs can reside in the system -// simultaneously. -//========================================================= - -#define TAP_COMPONENT_ID TAP_ID diff --git a/tap-win32/constants.h b/tap-win32/constants.h deleted file mode 100755 index 9bbd7ee..0000000 --- a/tap-win32/constants.h +++ /dev/null @@ -1,52 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -//==================================================================== -// Product and Version public settings -//==================================================================== - -#define PRODUCT_STRING PRODUCT_TAP_DEVICE_DESCRIPTION - -#define TAP_NDIS_MAJOR_VERSION 5 -#define TAP_NDIS_MINOR_VERSION 0 - -//=========================================================== -// Driver constants -//=========================================================== - -#define ETHERNET_HEADER_SIZE (sizeof (ETH_HEADER)) -#define ETHERNET_MTU 1500 -#define ETHERNET_PACKET_SIZE (ETHERNET_MTU + ETHERNET_HEADER_SIZE) -#define DEFAULT_PACKET_LOOKAHEAD (ETHERNET_PACKET_SIZE) - -#define NIC_MAX_MCAST_LIST 32 // Max length of multicast address list - -#define MINIMUM_MTU 576 // USE TCP Minimum MTU -#define MAXIMUM_MTU 65536 // IP maximum MTU - -#define PACKET_QUEUE_SIZE 64 // tap -> userspace queue size -#define IRP_QUEUE_SIZE 16 // max number of simultaneous i/o operations from userspace -#define INJECT_QUEUE_SIZE 16 // DHCP/ARP -> tap injection queue - -#define TAP_LITTLE_ENDIAN // affects ntohs, htonl, etc. functions diff --git a/tap-win32/dhcp.c b/tap-win32/dhcp.c deleted file mode 100755 index 3891d42..0000000 --- a/tap-win32/dhcp.c +++ /dev/null @@ -1,599 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -//========================= -// Code to set DHCP options -//========================= - -VOID -SetDHCPOpt (DHCPMsg *m, void *data, unsigned int len) -{ - if (!m->overflow) - { - if (m->optlen + len <= DHCP_OPTIONS_BUFFER_SIZE) - { - if (len) - { - NdisMoveMemory (m->msg.options + m->optlen, data, len); - m->optlen += len; - } - } - else - { - m->overflow = TRUE; - } - } -} - -VOID -SetDHCPOpt0 (DHCPMsg *msg, int type) -{ - DHCPOPT0 opt; - opt.type = (UCHAR) type; - SetDHCPOpt (msg, &opt, sizeof (opt)); -} - -VOID -SetDHCPOpt8 (DHCPMsg *msg, int type, ULONG data) -{ - DHCPOPT8 opt; - opt.type = (UCHAR) type; - opt.len = sizeof (opt.data); - opt.data = (UCHAR) data; - SetDHCPOpt (msg, &opt, sizeof (opt)); -} - -VOID -SetDHCPOpt32 (DHCPMsg *msg, int type, ULONG data) -{ - DHCPOPT32 opt; - opt.type = (UCHAR) type; - opt.len = sizeof (opt.data); - opt.data = data; - SetDHCPOpt (msg, &opt, sizeof (opt)); -} - -//============== -// Checksum code -//============== - -USHORT -ip_checksum (const UCHAR *buf, const int len_ip_header) -{ - USHORT word16; - ULONG sum = 0; - int i; - - // make 16 bit words out of every two adjacent 8 bit words in the packet - // and add them up - for (i = 0; i < len_ip_header - 1; i += 2) { - word16 = ((buf[i] << 8) & 0xFF00) + (buf[i+1] & 0xFF); - sum += (ULONG) word16; - } - - // take only 16 bits out of the 32 bit sum and add up the carries - while (sum >> 16) - sum = (sum & 0xFFFF) + (sum >> 16); - - // one's complement the result - return ((USHORT) ~sum); -} - -USHORT -udp_checksum (const UCHAR *buf, - const int len_udp, - const UCHAR *src_addr, - const UCHAR *dest_addr) -{ - USHORT word16; - ULONG sum = 0; - int i; - - // make 16 bit words out of every two adjacent 8 bit words and - // calculate the sum of all 16 bit words - for (i = 0; i < len_udp; i += 2){ - word16 = ((buf[i] << 8) & 0xFF00) + ((i + 1 < len_udp) ? (buf[i+1] & 0xFF) : 0); - sum += word16; - } - - // add the UDP pseudo header which contains the IP source and destination addresses - for (i = 0; i < 4; i += 2){ - word16 =((src_addr[i] << 8) & 0xFF00) + (src_addr[i+1] & 0xFF); - sum += word16; - } - for (i = 0; i < 4; i += 2){ - word16 =((dest_addr[i] << 8) & 0xFF00) + (dest_addr[i+1] & 0xFF); - sum += word16; - } - - // the protocol number and the length of the UDP packet - sum += (USHORT) IPPROTO_UDP + (USHORT) len_udp; - - // keep only the last 16 bits of the 32 bit calculated sum and add the carries - while (sum >> 16) - sum = (sum & 0xFFFF) + (sum >> 16); - - // Take the one's complement of sum - return ((USHORT) ~sum); -} - -//================================ -// Set IP and UDP packet checksums -//================================ - -VOID -SetChecksumDHCPMsg (DHCPMsg *m) -{ - // Set IP checksum - m->msg.pre.ip.check = htons (ip_checksum ((UCHAR *) &m->msg.pre.ip, sizeof (IPHDR))); - - // Set UDP Checksum - m->msg.pre.udp.check = htons (udp_checksum ((UCHAR *) &m->msg.pre.udp, - sizeof (UDPHDR) + sizeof (DHCP) + m->optlen, - (UCHAR *)&m->msg.pre.ip.saddr, - (UCHAR *)&m->msg.pre.ip.daddr)); -} - -//=================== -// DHCP message tests -//=================== - -int -GetDHCPMessageType (const DHCP *dhcp, const int optlen) -{ - const UCHAR *p = (UCHAR *) (dhcp + 1); - int i; - - for (i = 0; i < optlen; ++i) - { - const UCHAR type = p[i]; - const int room = optlen - i - 1; - if (type == DHCP_END) // didn't find what we were looking for - return -1; - else if (type == DHCP_PAD) // no-operation - ; - else if (type == DHCP_MSG_TYPE) // what we are looking for - { - if (room >= 2) - { - if (p[i+1] == 1) // message length should be 1 - return p[i+2]; // return message type - } - return -1; - } - else // some other message - { - if (room >= 1) - { - const int len = p[i+1]; // get message length - i += (len + 1); // advance to next message - } - } - } - return -1; -} - -BOOLEAN -DHCPMessageOurs (const TapAdapterPointer p_Adapter, - const ETH_HEADER *eth, - const IPHDR *ip, - const UDPHDR *udp, - const DHCP *dhcp) -{ - // Must be UDPv4 protocol - if (!(eth->proto == htons (ETH_P_IP) && ip->protocol == IPPROTO_UDP)) - return FALSE; - - // Source MAC must be our adapter - if (!MAC_EQUAL (eth->src, p_Adapter->m_MAC)) - return FALSE; - - // Dest MAC must be either broadcast or our virtual DHCP server - if (!(MAC_EQUAL (eth->dest, p_Adapter->m_MAC_Broadcast) - || MAC_EQUAL (eth->dest, p_Adapter->m_dhcp_server_mac))) - return FALSE; - - // Port numbers must be correct - if (!(udp->dest == htons (BOOTPS_PORT) - && udp->source == htons (BOOTPC_PORT))) - return FALSE; - - // Hardware address must be MAC addr sized - if (!(dhcp->hlen == sizeof (MACADDR))) - return FALSE; - - // Hardware address must match our adapter - if (!MAC_EQUAL (eth->src, dhcp->chaddr)) - return FALSE; - - return TRUE; -} - - -//===================================================== -// Build all of DHCP packet except for DHCP options. -// Assume that *p has been zeroed before we are called. -//===================================================== - -VOID -BuildDHCPPre (const TapAdapterPointer a, - DHCPPre *p, - const ETH_HEADER *eth, - const IPHDR *ip, - const UDPHDR *udp, - const DHCP *dhcp, - const int optlen, - const int type) -{ - // Should we broadcast or direct to a specific MAC / IP address? - const BOOLEAN broadcast = (type == DHCPNAK - || MAC_EQUAL (eth->dest, a->m_MAC_Broadcast)); - // Build ethernet header - - COPY_MAC (p->eth.src, a->m_dhcp_server_mac); - - if (broadcast) - COPY_MAC (p->eth.dest, a->m_MAC_Broadcast); - else - COPY_MAC (p->eth.dest, eth->src); - - p->eth.proto = htons (ETH_P_IP); - - // Build IP header - - p->ip.version_len = (4 << 4) | (sizeof (IPHDR) >> 2); - p->ip.tos = 0; - p->ip.tot_len = htons (sizeof (IPHDR) + sizeof (UDPHDR) + sizeof (DHCP) + optlen); - p->ip.id = 0; - p->ip.frag_off = 0; - p->ip.ttl = 16; - p->ip.protocol = IPPROTO_UDP; - p->ip.check = 0; - p->ip.saddr = a->m_dhcp_server_ip; - - if (broadcast) - p->ip.daddr = ~0; - else - p->ip.daddr = a->m_dhcp_addr; - - // Build UDP header - - p->udp.source = htons (BOOTPS_PORT); - p->udp.dest = htons (BOOTPC_PORT); - p->udp.len = htons (sizeof (UDPHDR) + sizeof (DHCP) + optlen); - p->udp.check = 0; - - // Build DHCP response - - p->dhcp.op = BOOTREPLY; - p->dhcp.htype = 1; - p->dhcp.hlen = sizeof (MACADDR); - p->dhcp.hops = 0; - p->dhcp.xid = dhcp->xid; - p->dhcp.secs = 0; - p->dhcp.flags = 0; - p->dhcp.ciaddr = 0; - - if (type == DHCPNAK) - p->dhcp.yiaddr = 0; - else - p->dhcp.yiaddr = a->m_dhcp_addr; - - p->dhcp.siaddr = a->m_dhcp_server_ip; - p->dhcp.giaddr = 0; - COPY_MAC (p->dhcp.chaddr, eth->src); - p->dhcp.magic = htonl (0x63825363); -} -//============================= -// Build specific DHCP messages -//============================= - -VOID -SendDHCPMsg (const TapAdapterPointer a, - const int type, - const ETH_HEADER *eth, - const IPHDR *ip, - const UDPHDR *udp, - const DHCP *dhcp) -{ - DHCPMsg *pkt; - - if (!(type == DHCPOFFER || type == DHCPACK || type == DHCPNAK)) - { - DEBUGP (("[TAP] SendDHCPMsg: Bad DHCP type: %d\n", type)); - return; - } - - pkt = (DHCPMsg *) MemAlloc (sizeof (DHCPMsg), TRUE); - - if (pkt) - { - //----------------------- - // Build DHCP options - //----------------------- - - // Message Type - SetDHCPOpt8 (pkt, DHCP_MSG_TYPE, type); - - // Server ID - SetDHCPOpt32 (pkt, DHCP_SERVER_ID, a->m_dhcp_server_ip); - - if (type == DHCPOFFER || type == DHCPACK) - { - // Lease Time - SetDHCPOpt32 (pkt, DHCP_LEASE_TIME, htonl (a->m_dhcp_lease_time)); - - // Netmask - SetDHCPOpt32 (pkt, DHCP_NETMASK, a->m_dhcp_netmask); - - // Other user-defined options - SetDHCPOpt (pkt, - a->m_dhcp_user_supplied_options_buffer, - a->m_dhcp_user_supplied_options_buffer_len); - } - - // End - SetDHCPOpt0 (pkt, DHCP_END); - - if (!DHCPMSG_OVERFLOW (pkt)) - { - // The initial part of the DHCP message (not including options) gets built here - BuildDHCPPre (a, - &pkt->msg.pre, - eth, - ip, - udp, - dhcp, - DHCPMSG_LEN_OPT (pkt), - type); - - SetChecksumDHCPMsg (pkt); - - DUMP_PACKET ("DHCPMsg", - DHCPMSG_BUF (pkt), - DHCPMSG_LEN_FULL (pkt)); - - // Return DHCP response to kernel - InjectPacketDeferred (a, - DHCPMSG_BUF (pkt), - DHCPMSG_LEN_FULL (pkt)); - } - else - { - DEBUGP (("[TAP] SendDHCPMsg: DHCP buffer overflow\n")); - } - - MemFree (pkt, sizeof (DHCPMsg)); - } -} - -//=================================================================== -// Handle a BOOTPS packet produced by the local system to -// resolve the address/netmask of this adapter. -// If we are in TAP_IOCTL_CONFIG_DHCP_MASQ mode, reply -// to the message. Return TRUE if we processed the passed -// message, so that downstream stages can ignore it. -//=================================================================== - -BOOLEAN -ProcessDHCP (TapAdapterPointer p_Adapter, - const ETH_HEADER *eth, - const IPHDR *ip, - const UDPHDR *udp, - const DHCP *dhcp, - int optlen) -{ - int msg_type; - - // Sanity check IP header - if (!(ntohs (ip->tot_len) == sizeof (IPHDR) + sizeof (UDPHDR) + sizeof (DHCP) + optlen - && (ntohs (ip->frag_off) & IP_OFFMASK) == 0)) - return TRUE; - - // Does this message belong to us? - if (!DHCPMessageOurs (p_Adapter, eth, ip, udp, dhcp)) - return FALSE; - - msg_type = GetDHCPMessageType (dhcp, optlen); - - // Drop non-BOOTREQUEST messages - if (dhcp->op != BOOTREQUEST) - return TRUE; - - // Drop any messages except DHCPDISCOVER or DHCPREQUEST - if (!(msg_type == DHCPDISCOVER || msg_type == DHCPREQUEST)) - return TRUE; - - // Should we reply with DHCPOFFER, DHCPACK, or DHCPNAK? - if (msg_type == DHCPREQUEST - && ((dhcp->ciaddr && dhcp->ciaddr != p_Adapter->m_dhcp_addr) - || !p_Adapter->m_dhcp_received_discover - || p_Adapter->m_dhcp_bad_requests >= BAD_DHCPREQUEST_NAK_THRESHOLD)) - SendDHCPMsg (p_Adapter, - DHCPNAK, - eth, ip, udp, dhcp); - else - SendDHCPMsg (p_Adapter, - (msg_type == DHCPDISCOVER ? DHCPOFFER : DHCPACK), - eth, ip, udp, dhcp); - - // Remember if we received a DHCPDISCOVER - if (msg_type == DHCPDISCOVER) - p_Adapter->m_dhcp_received_discover = TRUE; - - // Is this a bad DHCPREQUEST? - if (msg_type == DHCPREQUEST && dhcp->ciaddr != p_Adapter->m_dhcp_addr) - ++p_Adapter->m_dhcp_bad_requests; - - return TRUE; -} - -#if DBG - -const char * -message_op_text (int op) -{ - switch (op) - { - case BOOTREQUEST: - return "BOOTREQUEST"; - case BOOTREPLY: - return "BOOTREPLY"; - default: - return "???"; - } -} - -const char * -message_type_text (int type) -{ - switch (type) - { - case DHCPDISCOVER: - return "DHCPDISCOVER"; - case DHCPOFFER: - return "DHCPOFFER"; - case DHCPREQUEST: - return "DHCPREQUEST"; - case DHCPDECLINE: - return "DHCPDECLINE"; - case DHCPACK: - return "DHCPACK"; - case DHCPNAK: - return "DHCPNAK"; - case DHCPRELEASE: - return "DHCPRELEASE"; - case DHCPINFORM: - return "DHCPINFORM"; - default: - return "???"; - } -} - -const char * -port_name (int port) -{ - switch (port) - { - case BOOTPS_PORT: - return "BOOTPS"; - case BOOTPC_PORT: - return "BOOTPC"; - default: - return "unknown"; - } -} - -VOID -DumpDHCP (const ETH_HEADER *eth, - const IPHDR *ip, - const UDPHDR *udp, - const DHCP *dhcp, - const int optlen) -{ - DEBUGP ((" %s", message_op_text (dhcp->op))); - DEBUGP ((" %s ", message_type_text (GetDHCPMessageType (dhcp, optlen)))); - PrIP (ip->saddr); - DEBUGP ((":%s[", port_name (ntohs (udp->source)))); - PrMac (eth->src); - DEBUGP (("] -> ")); - PrIP (ip->daddr); - DEBUGP ((":%s[", port_name (ntohs (udp->dest)))); - PrMac (eth->dest); - DEBUGP (("]")); - if (dhcp->ciaddr) - { - DEBUGP ((" ci=")); - PrIP (dhcp->ciaddr); - } - if (dhcp->yiaddr) - { - DEBUGP ((" yi=")); - PrIP (dhcp->yiaddr); - } - if (dhcp->siaddr) - { - DEBUGP ((" si=")); - PrIP (dhcp->siaddr); - } - if (dhcp->hlen == sizeof (MACADDR)) - { - DEBUGP ((" ch=")); - PrMac (dhcp->chaddr); - } - - DEBUGP ((" xid=0x%08x", ntohl (dhcp->xid))); - - if (ntohl (dhcp->magic) != 0x63825363) - DEBUGP ((" ma=0x%08x", ntohl (dhcp->magic))); - if (dhcp->htype != 1) - DEBUGP ((" htype=%d", dhcp->htype)); - if (dhcp->hops) - DEBUGP ((" hops=%d", dhcp->hops)); - if (ntohs (dhcp->secs)) - DEBUGP ((" secs=%d", ntohs (dhcp->secs))); - if (ntohs (dhcp->flags)) - DEBUGP ((" flags=0x%04x", ntohs (dhcp->flags))); - - // extra stuff - - if (ip->version_len != 0x45) - DEBUGP ((" vl=0x%02x", ip->version_len)); - if (ntohs (ip->tot_len) != sizeof (IPHDR) + sizeof (UDPHDR) + sizeof (DHCP) + optlen) - DEBUGP ((" tl=%d", ntohs (ip->tot_len))); - if (ntohs (udp->len) != sizeof (UDPHDR) + sizeof (DHCP) + optlen) - DEBUGP ((" ul=%d", ntohs (udp->len))); - - if (ip->tos) - DEBUGP ((" tos=0x%02x", ip->tos)); - if (ntohs (ip->id)) - DEBUGP ((" id=0x%04x", ntohs (ip->id))); - if (ntohs (ip->frag_off)) - DEBUGP ((" frag_off=0x%04x", ntohs (ip->frag_off))); - - DEBUGP ((" ttl=%d", ip->ttl)); - DEBUGP ((" ic=0x%04x [0x%04x]", ntohs (ip->check), - ip_checksum ((UCHAR*)ip, sizeof (IPHDR)))); - DEBUGP ((" uc=0x%04x [0x%04x/%d]", ntohs (udp->check), - udp_checksum ((UCHAR *) udp, - sizeof (UDPHDR) + sizeof (DHCP) + optlen, - (UCHAR *) &ip->saddr, - (UCHAR *) &ip->daddr), - optlen)); - - // Options - { - const UCHAR *opt = (UCHAR *) (dhcp + 1); - int i; - - DEBUGP ((" OPT")); - for (i = 0; i < optlen; ++i) - { - const UCHAR data = opt[i]; - DEBUGP ((".%d", data)); - } - } -} - -#endif /* DBG */ diff --git a/tap-win32/dhcp.h b/tap-win32/dhcp.h deleted file mode 100755 index 4215f81..0000000 --- a/tap-win32/dhcp.h +++ /dev/null @@ -1,164 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#pragma pack(1) - -//=================================================== -// How many bad DHCPREQUESTs do we receive before we -// return a NAK? -// -// A bad DHCPREQUEST is defined to be one where the -// requestor doesn't know its IP address. -//=================================================== - -#define BAD_DHCPREQUEST_NAK_THRESHOLD 3 - -//============================================== -// Maximum number of DHCP options bytes supplied -//============================================== - -#define DHCP_USER_SUPPLIED_OPTIONS_BUFFER_SIZE 256 -#define DHCP_OPTIONS_BUFFER_SIZE 256 - -//=================================== -// UDP port numbers of DHCP messages. -//=================================== - -#define BOOTPS_PORT 67 -#define BOOTPC_PORT 68 - -//=========================== -// The DHCP message structure -//=========================== - -typedef struct { -# define BOOTREQUEST 1 -# define BOOTREPLY 2 - UCHAR op; /* message op */ - - UCHAR htype; /* hardware address type (e.g. '1' = 10Mb Ethernet) */ - UCHAR hlen; /* hardware address length (e.g. '6' for 10Mb Ethernet) */ - UCHAR hops; /* client sets to 0, may be used by relay agents */ - ULONG xid; /* transaction ID, chosen by client */ - USHORT secs; /* seconds since request process began, set by client */ - USHORT flags; - ULONG ciaddr; /* client IP address, client sets if known */ - ULONG yiaddr; /* 'your' IP address -- server's response to client */ - ULONG siaddr; /* server IP address */ - ULONG giaddr; /* relay agent IP address */ - UCHAR chaddr[16]; /* client hardware address */ - UCHAR sname[64]; /* optional server host name */ - UCHAR file[128]; /* boot file name */ - ULONG magic; /* must be 0x63825363 (network order) */ -} DHCP; - -typedef struct { - ETH_HEADER eth; - IPHDR ip; - UDPHDR udp; - DHCP dhcp; -} DHCPPre; - -typedef struct { - DHCPPre pre; - UCHAR options[DHCP_OPTIONS_BUFFER_SIZE]; -} DHCPFull; - -typedef struct { - unsigned int optlen; - BOOLEAN overflow; - DHCPFull msg; -} DHCPMsg; - -//=================== -// Macros for DHCPMSG -//=================== - -#define DHCPMSG_LEN_BASE(p) (sizeof (DHCPPre)) -#define DHCPMSG_LEN_OPT(p) ((p)->optlen) -#define DHCPMSG_LEN_FULL(p) (DHCPMSG_LEN_BASE(p) + DHCPMSG_LEN_OPT(p)) -#define DHCPMSG_BUF(p) ((UCHAR*) &(p)->msg) -#define DHCPMSG_OVERFLOW(p) ((p)->overflow) - -//======================================== -// structs to hold individual DHCP options -//======================================== - -typedef struct { - UCHAR type; -} DHCPOPT0; - -typedef struct { - UCHAR type; - UCHAR len; - UCHAR data; -} DHCPOPT8; - -typedef struct { - UCHAR type; - UCHAR len; - ULONG data; -} DHCPOPT32; - -#pragma pack() - -//================== -// DHCP Option types -//================== - -#define DHCP_MSG_TYPE 53 /* message type (u8) */ -#define DHCP_PARM_REQ 55 /* parameter request list: c1 (u8), ... */ -#define DHCP_CLIENT_ID 61 /* client ID: type (u8), i1 (u8), ... */ -#define DHCP_IP 50 /* requested IP addr (u32) */ -#define DHCP_NETMASK 1 /* subnet mask (u32) */ -#define DHCP_LEASE_TIME 51 /* lease time sec (u32) */ -#define DHCP_RENEW_TIME 58 /* renewal time sec (u32) */ -#define DHCP_REBIND_TIME 59 /* rebind time sec (u32) */ -#define DHCP_SERVER_ID 54 /* server ID: IP addr (u32) */ -#define DHCP_PAD 0 -#define DHCP_END 255 - -//==================== -// DHCP Messages types -//==================== - -#define DHCPDISCOVER 1 -#define DHCPOFFER 2 -#define DHCPREQUEST 3 -#define DHCPDECLINE 4 -#define DHCPACK 5 -#define DHCPNAK 6 -#define DHCPRELEASE 7 -#define DHCPINFORM 8 - -#if DBG - -VOID -DumpDHCP (const ETH_HEADER *eth, - const IPHDR *ip, - const UDPHDR *udp, - const DHCP *dhcp, - const int optlen); - -#endif diff --git a/tap-win32/endian.h b/tap-win32/endian.h deleted file mode 100755 index 128029a..0000000 --- a/tap-win32/endian.h +++ /dev/null @@ -1,35 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#ifdef TAP_LITTLE_ENDIAN -#define ntohs(x) RtlUshortByteSwap(x) -#define htons(x) RtlUshortByteSwap(x) -#define ntohl(x) RtlUlongByteSwap(x) -#define htonl(x) RtlUlongByteSwap(x) -#else -#define ntohs(x) ((USHORT)(x)) -#define htons(x) ((USHORT)(x)) -#define ntohl(x) ((ULONG)(x)) -#define htonl(x) ((ULONG)(x)) -#endif diff --git a/tap-win32/error.c b/tap-win32/error.c deleted file mode 100755 index 5b25f48..0000000 --- a/tap-win32/error.c +++ /dev/null @@ -1,378 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -//----------------- -// DEBUGGING OUTPUT -//----------------- - -const char *g_LastErrorFilename; -int g_LastErrorLineNumber; - -#if DBG - -DebugOutput g_Debug; - -BOOLEAN -NewlineExists (const char *str, int len) -{ - while (len-- > 0) - { - const char c = *str++; - if (c == '\n') - return TRUE; - else if (c == '\0') - break; - } - return FALSE; -} - -VOID -MyDebugInit (unsigned int bufsiz) -{ - NdisZeroMemory (&g_Debug, sizeof (g_Debug)); - g_Debug.text = (char *) MemAlloc (bufsiz, FALSE); - if (g_Debug.text) - g_Debug.capacity = bufsiz; -} - -VOID -MyDebugFree () -{ - if (g_Debug.text) - MemFree (g_Debug.text, g_Debug.capacity); - NdisZeroMemory (&g_Debug, sizeof (g_Debug)); -} - -VOID -MyDebugPrint (const unsigned char* format, ...) -{ - if (g_Debug.text && g_Debug.capacity > 0 && CAN_WE_PRINT) - { - BOOLEAN owned; - ACQUIRE_MUTEX_ADAPTIVE (&g_Debug.lock, owned); - if (owned) - { - const int remaining = (int)g_Debug.capacity - (int)g_Debug.out; - - if (remaining > 0) - { - va_list args; - NTSTATUS status; - char *end; - - va_start (args, format); - status = RtlStringCchVPrintfExA (g_Debug.text + g_Debug.out, - remaining, - &end, - NULL, - STRSAFE_NO_TRUNCATION | STRSAFE_IGNORE_NULLS, - format, - args); - va_end (args); - - if (status == STATUS_SUCCESS) - g_Debug.out = (unsigned int) (end - g_Debug.text); - else - g_Debug.error = TRUE; - } - else - g_Debug.error = TRUE; - - RELEASE_MUTEX (&g_Debug.lock); - } - else - g_Debug.error = TRUE; - } -} - -BOOLEAN -GetDebugLine (char *buf, const int len) -{ - static const char *truncated = "[OUTPUT TRUNCATED]\n"; - BOOLEAN ret = FALSE; - - NdisZeroMemory (buf, len); - - if (g_Debug.text && g_Debug.capacity > 0) - { - BOOLEAN owned; - ACQUIRE_MUTEX_ADAPTIVE (&g_Debug.lock, owned); - if (owned) - { - int i = 0; - - if (g_Debug.error || NewlineExists (g_Debug.text + g_Debug.in, (int)g_Debug.out - (int)g_Debug.in)) - { - while (i < (len - 1) && g_Debug.in < g_Debug.out) - { - const char c = g_Debug.text[g_Debug.in++]; - if (c == '\n') - break; - buf[i++] = c; - } - if (i < len) - buf[i] = '\0'; - } - - if (!i) - { - if (g_Debug.in == g_Debug.out) - { - g_Debug.in = g_Debug.out = 0; - if (g_Debug.error) - { - const unsigned int tlen = strlen (truncated); - if (tlen < g_Debug.capacity) - { - NdisMoveMemory (g_Debug.text, truncated, tlen+1); - g_Debug.out = tlen; - } - g_Debug.error = FALSE; - } - } - } - else - ret = TRUE; - - RELEASE_MUTEX (&g_Debug.lock); - } - } - return ret; -} - -VOID -MyAssert (const unsigned char *file, int line) -{ - DEBUGP (("MYASSERT failed %s/%d\n", file, line)); - KeBugCheckEx (0x0F00BABA, - (ULONG_PTR) line, - (ULONG_PTR) 0, - (ULONG_PTR) 0, - (ULONG_PTR) 0); -} - -VOID -PrMac (const MACADDR mac) -{ - DEBUGP (("%x:%x:%x:%x:%x:%x", - mac[0], mac[1], mac[2], - mac[3], mac[4], mac[5])); -} - -VOID -PrIP (IPADDR ip_addr) -{ - const unsigned char *ip = (const unsigned char *) &ip_addr; - - DEBUGP (("%d.%d.%d.%d", - ip[0], ip[1], ip[2], ip[3])); -} - -const char * -PrIPProto (int proto) -{ - switch (proto) - { - case IPPROTO_UDP: - return "UDP"; - case IPPROTO_TCP: - return "TCP"; - case IPPROTO_ICMP: - return "ICMP"; - case IPPROTO_IGMP: - return "IGMP"; - default: - return "???"; - } -} - -VOID -DumpARP (const char *prefix, const ARP_PACKET *arp) -{ - DEBUGP (("%s ARP src=", prefix)); - PrMac (arp->m_MAC_Source); - DEBUGP ((" dest=")); - PrMac (arp->m_MAC_Destination); - DEBUGP ((" OP=0x%04x", - (int)ntohs(arp->m_ARP_Operation))); - DEBUGP ((" M=0x%04x(%d)", - (int)ntohs(arp->m_MAC_AddressType), - (int)arp->m_MAC_AddressSize)); - DEBUGP ((" P=0x%04x(%d)", - (int)ntohs(arp->m_PROTO_AddressType), - (int)arp->m_PROTO_AddressSize)); - - DEBUGP ((" MacSrc=")); - PrMac (arp->m_ARP_MAC_Source); - DEBUGP ((" MacDest=")); - PrMac (arp->m_ARP_MAC_Destination); - - DEBUGP ((" IPSrc=")); - PrIP (arp->m_ARP_IP_Source); - DEBUGP ((" IPDest=")); - PrIP (arp->m_ARP_IP_Destination); - - DEBUGP (("\n")); -} - -struct ethpayload { - ETH_HEADER eth; - UCHAR payload[DEFAULT_PACKET_LOOKAHEAD]; -}; - -VOID -DumpPacket2 (const char *prefix, - const ETH_HEADER *eth, - const unsigned char *data, - unsigned int len) -{ - struct ethpayload *ep = (struct ethpayload *) MemAlloc (sizeof (struct ethpayload), TRUE); - if (ep) - { - if (len > DEFAULT_PACKET_LOOKAHEAD) - len = DEFAULT_PACKET_LOOKAHEAD; - ep->eth = *eth; - NdisMoveMemory (ep->payload, data, len); - DumpPacket (prefix, (unsigned char *) ep, sizeof (ETH_HEADER) + len); - MemFree (ep, sizeof (struct ethpayload)); - } -} - -VOID -DumpPacket (const char *prefix, - const unsigned char *data, - unsigned int len) -{ - const ETH_HEADER *eth = (const ETH_HEADER *) data; - const IPHDR *ip = (const IPHDR *) (data + sizeof (ETH_HEADER)); - - if (len < sizeof (ETH_HEADER)) - { - DEBUGP (("%s TRUNCATED PACKET LEN=%d\n", prefix, len)); - return; - } - - // ARP Packet? - if (len >= sizeof (ARP_PACKET) && eth->proto == htons (ETH_P_ARP)) - { - DumpARP (prefix, (const ARP_PACKET *) data); - return; - } - - // IPv4 packet? - if (len >= (sizeof (IPHDR) + sizeof (ETH_HEADER)) - && eth->proto == htons (ETH_P_IP) - && IPH_GET_VER (ip->version_len) == 4) - { - const int hlen = IPH_GET_LEN (ip->version_len); - const int blen = len - sizeof (ETH_HEADER); - BOOLEAN did = FALSE; - - DEBUGP (("%s IPv4 %s[%d]", prefix, PrIPProto (ip->protocol), len)); - - if (!(ntohs (ip->tot_len) == blen && hlen <= blen)) - { - DEBUGP ((" XXX")); - return; - } - - // TCP packet? - if (ip->protocol == IPPROTO_TCP - && blen - hlen >= (sizeof (TCPHDR))) - { - const TCPHDR *tcp = (TCPHDR *) (data + sizeof (ETH_HEADER) + hlen); - DEBUGP ((" ")); - PrIP (ip->saddr); - DEBUGP ((":%d", ntohs (tcp->source))); - DEBUGP ((" -> ")); - PrIP (ip->daddr); - DEBUGP ((":%d", ntohs (tcp->dest))); - did = TRUE; - } - - // UDP packet? - else if ((ntohs (ip->frag_off) & IP_OFFMASK) == 0 - && ip->protocol == IPPROTO_UDP - && blen - hlen >= (sizeof (UDPHDR))) - { - const UDPHDR *udp = (UDPHDR *) (data + sizeof (ETH_HEADER) + hlen); - - // DHCP packet? - if ((udp->dest == htons (BOOTPC_PORT) || udp->dest == htons (BOOTPS_PORT)) - && blen - hlen >= (sizeof (UDPHDR) + sizeof (DHCP))) - { - const DHCP *dhcp = (DHCP *) (data - + hlen - + sizeof (ETH_HEADER) - + sizeof (UDPHDR)); - - int optlen = len - - sizeof (ETH_HEADER) - - hlen - - sizeof (UDPHDR) - - sizeof (DHCP); - - if (optlen < 0) - optlen = 0; - - DumpDHCP (eth, ip, udp, dhcp, optlen); - did = TRUE; - } - - if (!did) - { - DEBUGP ((" ")); - PrIP (ip->saddr); - DEBUGP ((":%d", ntohs (udp->source))); - DEBUGP ((" -> ")); - PrIP (ip->daddr); - DEBUGP ((":%d", ntohs (udp->dest))); - did = TRUE; - } - } - - if (!did) - { - DEBUGP ((" ipproto=%d ", ip->protocol)); - PrIP (ip->saddr); - DEBUGP ((" -> ")); - PrIP (ip->daddr); - } - - DEBUGP (("\n")); - return; - } - - { - DEBUGP (("%s ??? src=", prefix)); - PrMac (eth->src); - DEBUGP ((" dest=")); - PrMac (eth->dest); - DEBUGP ((" proto=0x%04x len=%d\n", - (int) ntohs(eth->proto), - len)); - } -} - -#endif diff --git a/tap-win32/error.h b/tap-win32/error.h deleted file mode 100755 index d8436dc..0000000 --- a/tap-win32/error.h +++ /dev/null @@ -1,88 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -//----------------- -// DEBUGGING OUTPUT -//----------------- - -#define NOTE_ERROR() \ -{ \ - g_LastErrorFilename = __FILE__; \ - g_LastErrorLineNumber = __LINE__; \ -} - -#if DBG - -typedef struct { - unsigned int in; - unsigned int out; - unsigned int capacity; - char *text; - BOOLEAN error; - MUTEX lock; -} DebugOutput; - -VOID MyDebugPrint (const unsigned char* format, ...); - -VOID MyAssert (const unsigned char *file, int line); - -VOID DumpPacket (const char *prefix, - const unsigned char *data, - unsigned int len); - -VOID DumpPacket2 (const char *prefix, - const ETH_HEADER *eth, - const unsigned char *data, - unsigned int len); - -#define CAN_WE_PRINT (DEBUGP_AT_DISPATCH || KeGetCurrentIrql () < DISPATCH_LEVEL) - -#if ALSO_DBGPRINT -#define DEBUGP(fmt) { MyDebugPrint fmt; if (CAN_WE_PRINT) DbgPrint fmt; } -#else -#define DEBUGP(fmt) { MyDebugPrint fmt; } -#endif - -#define MYASSERT(exp) \ -{ \ - if (!(exp)) \ - { \ - MyAssert(__FILE__, __LINE__); \ - } \ -} - -#define DUMP_PACKET(prefix, data, len) \ - DumpPacket (prefix, data, len) - -#define DUMP_PACKET2(prefix, eth, data, len) \ - DumpPacket2 (prefix, eth, data, len) - -#else - -#define DEBUGP(fmt) -#define MYASSERT(exp) -#define DUMP_PACKET(prefix, data, len) -#define DUMP_PACKET2(prefix, eth, data, len) - -#endif diff --git a/tap-win32/hexdump.c b/tap-win32/hexdump.c deleted file mode 100755 index 49bc38c..0000000 --- a/tap-win32/hexdump.c +++ /dev/null @@ -1,69 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#ifdef __cplusplus -extern "C" { -#endif - -#include "hexdump.h" - -#ifndef NDIS_MINIPORT_DRIVER - -VOID (*DbgMessage)(char *p_Format, ...) = DisplayDebugString; - -VOID DisplayDebugString (char *p_Format, ...) - { - static char l_Buffer [4096]; - - va_list l_ArgumentList; - va_start (l_ArgumentList, p_Format); - vsprintf (l_Buffer, p_Format, l_ArgumentList); - va_end (l_ArgumentList); - - OutputDebugStringA (l_Buffer); - } - -#endif - -VOID HexDump (unsigned char *p_Buffer, unsigned long p_Size) - { - unsigned long l_Index, l_Idx; - unsigned char l_Row [17]; - - for (l_Index = l_Row [16] = 0; l_Index < p_Size || l_Index % 16; ++l_Index) - { - if (l_Index % 16 == 0) - DEBUGP (("%05x ", l_Index)); - DEBUGP (("%02x ", l_Row [l_Index % 16] = (l_Index < p_Size ? p_Buffer [l_Index] : 0))); - l_Row [l_Index % 16] = IfPrint (l_Row [l_Index % 16]); - if ((l_Index + 1) % 16 == 0) - DEBUGP ((" %s\n", l_Row)); - } - - DEBUGP (("\n")); - } - -#ifdef __cplusplus -} -#endif diff --git a/tap-win32/hexdump.h b/tap-win32/hexdump.h deleted file mode 100755 index c1af705..0000000 --- a/tap-win32/hexdump.h +++ /dev/null @@ -1,63 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#ifndef HEXDUMP_DEFINED -#define HEXDUMP_DEFINED - -#ifdef __cplusplus -extern "C" { -#endif - -//===================================================================================== -// Debug Routines -//===================================================================================== - -#ifndef NDIS_MINIPORT_DRIVER -# include <stdio.h> -# include <ctype.h> -# include <windows.h> -# include <winnt.h> -# include <memory.h> - -# ifndef DEBUGP -# define DEBUGP(fmt) { DbgMessage fmt; } -# endif - - extern VOID (*DbgMessage)(char *p_Format, ...); - - VOID DisplayDebugString (char *p_Format, ...); -#endif - -//=================================================================================== -// Reporting / Debugging -//=================================================================================== -#define IfPrint(c) (c >= 32 && c < 127 ? c : '.') - -VOID HexDump (unsigned char *p_Buffer, unsigned long p_Size); - -#ifdef __cplusplus -} -#endif - -#endif diff --git a/tap-win32/i386/OemWin2k.inf.in b/tap-win32/i386/OemWin2k.inf.in deleted file mode 100755 index 031b06c..0000000 --- a/tap-win32/i386/OemWin2k.inf.in +++ /dev/null @@ -1,195 +0,0 @@ -; **************************************************************************** -; * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. * -; * This program is free software; you can redistribute it and/or modify * -; * it under the terms of the GNU General Public License version 2 * -; * as published by the Free Software Foundation. * -; **************************************************************************** - -; SYNTAX CHECKER -; cd \WINDDK\3790\tools\chkinf -; chkinf c:\src\openvpn\tap-win32\i386\oemwin2k.inf -; OUTPUT -> file:///c:/WINDDK/3790/tools/chkinf/htm/c%23+src+openvpn+tap-win32+i386+__OemWin2k.htm - -; INSTALL/REMOVE DRIVER -; tapinstall install OemWin2k.inf TAP0901 -; tapinstall update OemWin2k.inf TAP0901 -; tapinstall remove TAP0901 - -;********************************************************* -; Note to Developers: -; -; If you are bundling the TAP-Win32 driver with your app, -; you should try to rename it in such a way that it will -; not collide with other instances of TAP-Win32 defined -; by other apps. Multiple versions of the TAP-Win32 -; driver, each installed by different apps, can coexist -; on the same machine if you follow these guidelines. -; NOTE: these instructions assume you are editing the -; generated OemWin2k.inf file, not the source -; OemWin2k.inf.in file which is preprocessed by winconfig -; and uses macro definitions from settings.in. -; -; (1) Rename all tapXXXX instances in this file to -; something different (use at least 5 characters -; for this name!) -; (2) Change the "!define TAP" definition in openvpn.nsi -; to match what you changed tapXXXX to. -; (3) Change TARGETNAME in SOURCES to match what you -; changed tapXXXX to. -; (4) Change TAP_COMPONENT_ID in common.h to match what -; you changed tapXXXX to. -; (5) Change SZDEPENDENCIES in service.h to match what -; you changed tapXXXX to. -; (6) Change DeviceDescription and Provider strings. -; (7) Change PRODUCT_STRING in constants.h to what you -; set DeviceDescription to. -; -;********************************************************* - -[Version] - Signature = "$Windows NT$" - CatalogFile = @@PRODUCT_TAP_ID@@.cat - ClassGUID = {4d36e972-e325-11ce-bfc1-08002be10318} - Provider = %Provider% - Class = Net - -; This version number should match the version -; number given in SOURCES. - DriverVer=@@PRODUCT_TAP_RELDATE@@,@@PRODUCT_TAP_MAJOR_VER@@.00.00.@@PRODUCT_TAP_MINOR_VER@@ - -[Strings] - DeviceDescription = "@@PRODUCT_TAP_DEVICE_DESCRIPTION@@" - Provider = "@@PRODUCT_TAP_PROVIDER@@" - -;---------------------------------------------------------------- -; Manufacturer + Product Section (Done) -;---------------------------------------------------------------- -[Manufacturer] -!ifdef AMD64 - %Provider% = @@PRODUCT_TAP_ID@@, NTamd64 -!else - %Provider% = @@PRODUCT_TAP_ID@@ -!endif - -!ifdef AMD64 -[@@PRODUCT_TAP_ID@@.NTamd64] -!else -[@@PRODUCT_TAP_ID@@] -!endif - %DeviceDescription% = @@PRODUCT_TAP_ID@@.ndi, @@PRODUCT_TAP_ID@@ - -;--------------------------------------------------------------- -; Driver Section (Done) -;--------------------------------------------------------------- - -;----------------- Characteristics ------------ -; NCF_PHYSICAL = 0x04 -; NCF_VIRTUAL = 0x01 -; NCF_SOFTWARE_ENUMERATED = 0x02 -; NCF_HIDDEN = 0x08 -; NCF_NO_SERVICE = 0x10 -; NCF_HAS_UI = 0x80 -;----------------- Characteristics ------------ - -[@@PRODUCT_TAP_ID@@.ndi] - CopyFiles = @@PRODUCT_TAP_ID@@.driver, @@PRODUCT_TAP_ID@@.files - AddReg = @@PRODUCT_TAP_ID@@.reg - AddReg = @@PRODUCT_TAP_ID@@.params.reg - Characteristics = @@PRODUCT_TAP_CHARACTERISTICS@@ - -[@@PRODUCT_TAP_ID@@.ndi.Services] - AddService = @@PRODUCT_TAP_ID@@, 2, @@PRODUCT_TAP_ID@@.service - -[@@PRODUCT_TAP_ID@@.reg] - HKR, Ndi, Service, 0, "@@PRODUCT_TAP_ID@@" - HKR, Ndi\Interfaces, UpperRange, 0, "ndis5" - HKR, Ndi\Interfaces, LowerRange, 0, "ethernet" - HKR, , Manufacturer, 0, "%Provider%" - HKR, , ProductName, 0, "%DeviceDescription%" - -[@@PRODUCT_TAP_ID@@.params.reg] - HKR, Ndi\params\MTU, ParamDesc, 0, "MTU" - HKR, Ndi\params\MTU, Type, 0, "int" - HKR, Ndi\params\MTU, Default, 0, "1500" - HKR, Ndi\params\MTU, Optional, 0, "0" - HKR, Ndi\params\MTU, Min, 0, "100" - HKR, Ndi\params\MTU, Max, 0, "1500" - HKR, Ndi\params\MTU, Step, 0, "1" - HKR, Ndi\params\MediaStatus, ParamDesc, 0, "Media Status" - HKR, Ndi\params\MediaStatus, Type, 0, "enum" - HKR, Ndi\params\MediaStatus, Default, 0, "0" - HKR, Ndi\params\MediaStatus, Optional, 0, "0" - HKR, Ndi\params\MediaStatus\enum, "0", 0, "Application Controlled" - HKR, Ndi\params\MediaStatus\enum, "1", 0, "Always Connected" - HKR, Ndi\params\MAC, ParamDesc, 0, "MAC Address" - HKR, Ndi\params\MAC, Type, 0, "edit" - HKR, Ndi\params\MAC, Optional, 0, "1" - HKR, Ndi\params\AllowNonAdmin, ParamDesc, 0, "Non-Admin Access" - HKR, Ndi\params\AllowNonAdmin, Type, 0, "enum" - HKR, Ndi\params\AllowNonAdmin, Default, 0, "1" - HKR, Ndi\params\AllowNonAdmin, Optional, 0, "0" - HKR, Ndi\params\AllowNonAdmin\enum, "0", 0, "Not Allowed" - HKR, Ndi\params\AllowNonAdmin\enum, "1", 0, "Allowed" - -;---------------------------------------------------------------- -; Service Section -;---------------------------------------------------------------- - -;---------- Service Type ------------- -; SERVICE_KERNEL_DRIVER = 0x01 -; SERVICE_WIN32_OWN_PROCESS = 0x10 -;---------- Service Type ------------- - -;---------- Start Mode --------------- -; SERVICE_BOOT_START = 0x0 -; SERVICE_SYSTEM_START = 0x1 -; SERVICE_AUTO_START = 0x2 -; SERVICE_DEMAND_START = 0x3 -; SERVICE_DISABLED = 0x4 -;---------- Start Mode --------------- - -[@@PRODUCT_TAP_ID@@.service] - DisplayName = %DeviceDescription% - ServiceType = 1 - StartType = 3 - ErrorControl = 1 - LoadOrderGroup = NDIS - ServiceBinary = %12%\@@PRODUCT_TAP_ID@@.sys - -;----------------------------------------------------------------- -; File Installation -;----------------------------------------------------------------- - -;----------------- Copy Flags ------------ -; COPYFLG_NOSKIP = 0x02 -; COPYFLG_NOVERSIONCHECK = 0x04 -;----------------- Copy Flags ------------ - -; SourceDisksNames -; diskid = description[, [tagfile] [, <unused>, subdir]] -; 1 = "Intel Driver Disk 1",e100bex.sys,, - -[SourceDisksNames] - 1 = %DeviceDescription%, @@PRODUCT_TAP_ID@@.sys - -; SourceDisksFiles -; filename_on_source = diskID[, [subdir][, size]] -; e100bex.sys = 1,, ; on distribution disk 1 - -[SourceDisksFiles] -@@PRODUCT_TAP_ID@@.sys = 1 - -[DestinationDirs] - @@PRODUCT_TAP_ID@@.files = 11 - @@PRODUCT_TAP_ID@@.driver = 12 - -[@@PRODUCT_TAP_ID@@.files] -; TapPanel.cpl,,,6 ; COPYFLG_NOSKIP | COPYFLG_NOVERSIONCHECK -; cipsrvr.exe,,,6 ; COPYFLG_NOSKIP | COPYFLG_NOVERSIONCHECK - -[@@PRODUCT_TAP_ID@@.driver] - @@PRODUCT_TAP_ID@@.sys,,,6 ; COPYFLG_NOSKIP | COPYFLG_NOVERSIONCHECK - -;--------------------------------------------------------------- -; End -;--------------------------------------------------------------- diff --git a/tap-win32/instance.c b/tap-win32/instance.c deleted file mode 100755 index 182cee8..0000000 --- a/tap-win32/instance.c +++ /dev/null @@ -1,241 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#define INSTANCE_KEY(a) ((PVOID)((a)->m_Extension.m_TapDevice)) - -#define N_INSTANCE_BUCKETS 256 - -typedef struct _INSTANCE { - struct _INSTANCE *next; - TapAdapterPointer m_Adapter; -} INSTANCE; - -typedef struct { - INSTANCE *list; - MUTEX lock; -} INSTANCE_BUCKET; - -typedef struct { - INSTANCE_BUCKET buckets[N_INSTANCE_BUCKETS]; -} INSTANCE_HASH; - -INSTANCE_HASH *g_InstanceHash = NULL; - -// must return a hash >= 0 and < N_INSTANCE_BUCKETS -int -InstanceHashValue (PVOID addr) -{ - UCHAR *p = (UCHAR *) &addr; - - if (sizeof (addr) == 4) - return p[0] ^ p[1] ^ p[2] ^ p[3]; - else if (sizeof (addr) == 8) - return p[0] ^ p[1] ^ p[2] ^ p[3] ^ p[4] ^ p[5] ^ p[6] ^ p[7]; - else - { - MYASSERT (0); - } -} - -BOOLEAN -InitInstanceList (VOID) -{ - MYASSERT (g_InstanceHash == NULL); - g_InstanceHash = MemAlloc (sizeof (INSTANCE_HASH), TRUE); - if (g_InstanceHash) - { - int i; - for (i = 0; i < N_INSTANCE_BUCKETS; ++i) - INIT_MUTEX (&g_InstanceHash->buckets[i].lock); - return TRUE; - } - else - return FALSE; -} - -int -NInstances (VOID) -{ - int i, n = 0; - - if (g_InstanceHash) - { - for (i = 0; i < N_INSTANCE_BUCKETS; ++i) - { - BOOLEAN got_lock; - INSTANCE_BUCKET *ib = &g_InstanceHash->buckets[i]; - ACQUIRE_MUTEX_ADAPTIVE (&ib->lock, got_lock); - - if (got_lock) - { - INSTANCE *current; - for (current = ib->list; current != NULL; current = current->next) - ++n; - RELEASE_MUTEX (&ib->lock); - } - else - return -1; - } - } - - return n; -} - -int -InstanceMaxBucketSize (VOID) -{ - int i, n = 0; - - if (g_InstanceHash) - { - for (i = 0; i < N_INSTANCE_BUCKETS; ++i) - { - BOOLEAN got_lock; - int bucket_size = 0; - INSTANCE_BUCKET *ib = &g_InstanceHash->buckets[i]; - ACQUIRE_MUTEX_ADAPTIVE (&ib->lock, got_lock); - - if (got_lock) - { - INSTANCE *current; - for (current = ib->list; current != NULL; current = current->next) - ++bucket_size; - if (bucket_size > n) - n = bucket_size; - RELEASE_MUTEX (&ib->lock); - } - else - return -1; - } - } - - return n; -} - -VOID -FreeInstanceList (VOID) -{ - if (g_InstanceHash) - { - MYASSERT (NInstances() == 0); - MemFree (g_InstanceHash, sizeof (INSTANCE_HASH)); - g_InstanceHash = NULL; - } -} - -BOOLEAN -AddAdapterToInstanceList (TapAdapterPointer p_Adapter) -{ - BOOLEAN got_lock; - BOOLEAN ret = FALSE; - const int hash = InstanceHashValue(INSTANCE_KEY(p_Adapter)); - INSTANCE_BUCKET *ib = &g_InstanceHash->buckets[hash]; - - DEBUGP (("[TAP] AddAdapterToInstanceList hash=%d\n", hash)); - - ACQUIRE_MUTEX_ADAPTIVE (&ib->lock, got_lock); - - if (got_lock) - { - INSTANCE *i = MemAlloc (sizeof (INSTANCE), FALSE); - if (i) - { - MYASSERT (p_Adapter); - i->m_Adapter = p_Adapter; - i->next = ib->list; - ib->list = i; - ret = TRUE; - } - RELEASE_MUTEX (&ib->lock); - } - - return ret; -} - -BOOLEAN -RemoveAdapterFromInstanceList (TapAdapterPointer p_Adapter) -{ - BOOLEAN got_lock; - BOOLEAN ret = FALSE; - INSTANCE_BUCKET *ib = &g_InstanceHash->buckets[InstanceHashValue(INSTANCE_KEY(p_Adapter))]; - - ACQUIRE_MUTEX_ADAPTIVE (&ib->lock, got_lock); - - if (got_lock) - { - INSTANCE *current, *prev=NULL; - for (current = ib->list; current != NULL; current = current->next) - { - if (current->m_Adapter == p_Adapter) // found match - { - if (prev) - prev->next = current->next; - else - ib->list = current->next; - MemFree (current->m_Adapter, sizeof (TapAdapter)); - MemFree (current, sizeof (INSTANCE)); - ret = TRUE; - break; - } - prev = current; - } - RELEASE_MUTEX (&ib->lock); - } - - return ret; -} - -TapAdapterPointer -LookupAdapterInInstanceList (PDEVICE_OBJECT p_DeviceObject) -{ - BOOLEAN got_lock; - TapAdapterPointer ret = NULL; - INSTANCE_BUCKET *ib = &g_InstanceHash->buckets[InstanceHashValue((PVOID)p_DeviceObject)]; - - ACQUIRE_MUTEX_ADAPTIVE (&ib->lock, got_lock); - - if (got_lock) - { - INSTANCE *current, *prev=NULL; - for (current = ib->list; current != NULL; current = current->next) - { - if (p_DeviceObject == INSTANCE_KEY (current->m_Adapter)) // found match - { - // move it to head of list - if (prev) - { - prev->next = current->next; - current->next = ib->list; - ib->list = current; - } - ret = ib->list->m_Adapter; - break; - } - prev = current; - } - RELEASE_MUTEX (&ib->lock); - } - - return ret; -} diff --git a/tap-win32/lock.h b/tap-win32/lock.h deleted file mode 100755 index ea75414..0000000 --- a/tap-win32/lock.h +++ /dev/null @@ -1,75 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -typedef struct -{ - volatile long count; -} MUTEX; - -#define MUTEX_SLEEP_TIME 10000 // microseconds - -#define INIT_MUTEX(m) { (m)->count = 0; } - -#define ACQUIRE_MUTEX_BLOCKING(m) \ -{ \ - while (NdisInterlockedIncrement (&((m)->count)) != 1) \ - { \ - NdisInterlockedDecrement(&((m)->count)); \ - NdisMSleep(MUTEX_SLEEP_TIME); \ - } \ -} - -#define RELEASE_MUTEX(m) \ -{ \ - NdisInterlockedDecrement(&((m)->count)); \ -} - -#define ACQUIRE_MUTEX_NONBLOCKING(m, result) \ -{ \ - if (NdisInterlockedIncrement (&((m)->count)) != 1) \ - { \ - NdisInterlockedDecrement(&((m)->count)); \ - result = FALSE; \ - } \ - else \ - { \ - result = TRUE; \ - } \ -} - -#define ACQUIRE_MUTEX_ADAPTIVE(m, result) \ -{ \ - result = TRUE; \ - while (NdisInterlockedIncrement (&((m)->count)) != 1) \ - { \ - NdisInterlockedDecrement(&((m)->count)); \ - if (KeGetCurrentIrql () < DISPATCH_LEVEL) \ - NdisMSleep(MUTEX_SLEEP_TIME); \ - else \ - { \ - result = FALSE; \ - break; \ - } \ - } \ -} diff --git a/tap-win32/macinfo.c b/tap-win32/macinfo.c deleted file mode 100755 index 8d512ec..0000000 --- a/tap-win32/macinfo.c +++ /dev/null @@ -1,154 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include "macinfo.h" - -int -HexStringToDecimalInt (const int p_Character) -{ - int l_Value = 0; - - if (p_Character >= 'A' && p_Character <= 'F') - l_Value = (p_Character - 'A') + 10; - else if (p_Character >= 'a' && p_Character <= 'f') - l_Value = (p_Character - 'a') + 10; - else if (p_Character >= '0' && p_Character <= '9') - l_Value = p_Character - '0'; - - return l_Value; -} - -BOOLEAN -ParseMAC (MACADDR dest, const char *src) -{ - int c; - int mac_index = 0; - BOOLEAN high_digit = FALSE; - int delim_action = 1; - - MYASSERT (src); - MYASSERT (dest); - - CLEAR_MAC (dest); - - while (c = *src++) - { - if (IsMacDelimiter (c)) - { - mac_index += delim_action; - high_digit = FALSE; - delim_action = 1; - } - else if (IsHexDigit (c)) - { - const int digit = HexStringToDecimalInt (c); - if (mac_index < sizeof (MACADDR)) - { - if (!high_digit) - { - dest[mac_index] = (char)(digit); - high_digit = TRUE; - delim_action = 1; - } - else - { - dest[mac_index] = (char)(dest[mac_index] * 16 + digit); - ++mac_index; - high_digit = FALSE; - delim_action = 0; - } - } - else - return FALSE; - } - else - return FALSE; - } - - return (mac_index + delim_action) >= sizeof (MACADDR); -} - -/* - * Generate a MAC using the GUID in the adapter name. - * - * The mac is constructed as 00:FF:xx:xx:xx:xx where - * the Xs are taken from the first 32 bits of the GUID in the - * adapter name. This is similar to the Linux 2.4 tap MAC - * generator, except linux uses 32 random bits for the Xs. - * - * In general, this solution is reasonable for most - * applications except for very large bridged TAP networks, - * where the probability of address collisions becomes more - * than infintesimal. - * - * Using the well-known "birthday paradox", on a 1000 node - * network the probability of collision would be - * 0.000116292153. On a 10,000 node network, the probability - * of collision would be 0.01157288998621678766. - */ - -VOID GenerateRandomMac (MACADDR mac, const unsigned char *adapter_name) -{ - unsigned const char *cp = adapter_name; - unsigned char c; - unsigned int i = 2; - unsigned int byte = 0; - int brace = 0; - int state = 0; - - CLEAR_MAC (mac); - - mac[0] = 0x00; - mac[1] = 0xFF; - - while (c = *cp++) - { - if (i >= sizeof (MACADDR)) - break; - if (c == '{') - brace = 1; - if (IsHexDigit (c) && brace) - { - const unsigned int digit = HexStringToDecimalInt (c); - if (state) - { - byte <<= 4; - byte |= digit; - mac[i++] = (unsigned char) byte; - state = 0; - } - else - { - byte = digit; - state = 1; - } - } - } -} - -VOID GenerateRelatedMAC (MACADDR dest, const MACADDR src, const int delta) -{ - COPY_MAC (dest, src); - dest[2] += (UCHAR) delta; -} diff --git a/tap-win32/macinfo.h b/tap-win32/macinfo.h deleted file mode 100755 index 51e930d..0000000 --- a/tap-win32/macinfo.h +++ /dev/null @@ -1,38 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#ifndef MacInfoDefined -#define MacInfoDefined - -//=================================================================================== -// Macros -//=================================================================================== -#define IsMacDelimiter(a) (a == ':' || a == '-' || a == '.') -#define IsHexDigit(c) ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f')) - -#define COPY_MAC(dest, src) NdisMoveMemory ((dest), (src), sizeof (MACADDR)) -#define CLEAR_MAC(dest) NdisZeroMemory ((dest), sizeof (MACADDR)) -#define MAC_EQUAL(a,b) (memcmp ((a), (b), sizeof (MACADDR)) == 0) - -#endif diff --git a/tap-win32/mem.c b/tap-win32/mem.c deleted file mode 100755 index 6fbbed5..0000000 --- a/tap-win32/mem.c +++ /dev/null @@ -1,186 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -//------------------ -// Memory Management -//------------------ - -PVOID -MemAlloc (ULONG p_Size, BOOLEAN zero) -{ - PVOID l_Return = NULL; - - if (p_Size) - { - __try - { - if (NdisAllocateMemoryWithTag (&l_Return, p_Size, 'APAT') - == NDIS_STATUS_SUCCESS) - { - if (zero) - NdisZeroMemory (l_Return, p_Size); - } - else - l_Return = NULL; - } - __except (EXCEPTION_EXECUTE_HANDLER) - { - l_Return = NULL; - } - } - - return l_Return; -} - -VOID -MemFree (PVOID p_Addr, ULONG p_Size) -{ - if (p_Addr && p_Size) - { - __try - { -#if DBG - NdisZeroMemory (p_Addr, p_Size); -#endif - NdisFreeMemory (p_Addr, p_Size, 0); - } - __except (EXCEPTION_EXECUTE_HANDLER) - { - } - } -} - -/* - * Circular queue management routines. - */ - -#define QUEUE_BYTE_ALLOCATION(size) \ - (sizeof (Queue) + (size * sizeof (PVOID))) - -#define QUEUE_ADD_INDEX(var, inc) \ -{ \ - var += inc; \ - if (var >= q->capacity) \ - var -= q->capacity; \ - MYASSERT (var < q->capacity); \ -} - -#define QUEUE_SANITY_CHECK() \ - MYASSERT (q != NULL && q->base < q->capacity && q->size <= q->capacity) - -#define QueueCount(q) (q->size) - -#define UPDATE_MAX_SIZE() \ -{ \ - if (q->size > q->max_size) \ - q->max_size = q->size; \ -} - -Queue * -QueueInit (ULONG capacity) -{ - Queue *q; - - MYASSERT (capacity > 0); - q = (Queue *) MemAlloc (QUEUE_BYTE_ALLOCATION (capacity), TRUE); - if (!q) - return NULL; - - q->base = q->size = 0; - q->capacity = capacity; - q->max_size = 0; - return q; -} - -VOID -QueueFree (Queue *q) -{ - if (q) - { - QUEUE_SANITY_CHECK (); - MemFree (q, QUEUE_BYTE_ALLOCATION (q->capacity)); - } -} - -PVOID -QueuePush (Queue *q, PVOID item) -{ - ULONG dest; - QUEUE_SANITY_CHECK (); - if (q->size == q->capacity) - return NULL; - dest = q->base; - QUEUE_ADD_INDEX (dest, q->size); - q->data[dest] = item; - ++q->size; - UPDATE_MAX_SIZE(); - return item; -} - -PVOID -QueuePop (Queue *q) -{ - ULONG oldbase; - QUEUE_SANITY_CHECK (); - if (!q->size) - return NULL; - oldbase = q->base; - QUEUE_ADD_INDEX (q->base, 1); - --q->size; - UPDATE_MAX_SIZE(); - return q->data[oldbase]; -} - -PVOID -QueueExtract (Queue *q, PVOID item) -{ - ULONG src, dest, count, n; - QUEUE_SANITY_CHECK (); - n = 0; - src = dest = q->base; - count = q->size; - while (count--) - { - if (item == q->data[src]) - { - ++n; - --q->size; - } - else - { - q->data[dest] = q->data[src]; - QUEUE_ADD_INDEX (dest, 1); - } - QUEUE_ADD_INDEX (src, 1); - } - if (n) - return item; - else - return NULL; -} - -#undef QUEUE_BYTE_ALLOCATION -#undef QUEUE_ADD_INDEX -#undef QUEUE_SANITY_CHECK -#undef UPDATE_MAX_SIZE diff --git a/tap-win32/proto.h b/tap-win32/proto.h deleted file mode 100755 index 894a37f..0000000 --- a/tap-win32/proto.h +++ /dev/null @@ -1,224 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -//============================================================ -// MAC address, Ethernet header, and ARP -//============================================================ - -#pragma pack(1) - -#define IP_HEADER_SIZE 20 -#define IPV6_HEADER_SIZE 40 - -typedef unsigned char MACADDR [6]; -typedef unsigned long IPADDR; -typedef unsigned char IPV6ADDR [16]; - -//----------------- -// Ethernet address -//----------------- - -typedef struct { - MACADDR addr; -} ETH_ADDR; - -typedef struct { - ETH_ADDR list[NIC_MAX_MCAST_LIST]; -} MC_LIST; - -//---------------- -// Ethernet header -//---------------- - -typedef struct -{ - MACADDR dest; /* destination eth addr */ - MACADDR src; /* source ether addr */ - -# define ETH_P_IP 0x0800 /* IPv4 protocol */ -# define ETH_P_IPV6 0x86DD /* IPv6 protocol */ -# define ETH_P_ARP 0x0806 /* ARP protocol */ - USHORT proto; /* packet type ID field */ -} ETH_HEADER, *PETH_HEADER; - -//---------------- -// ARP packet -//---------------- - -typedef struct - { - MACADDR m_MAC_Destination; // Reverse these two - MACADDR m_MAC_Source; // to answer ARP requests - USHORT m_Proto; // 0x0806 - -# define MAC_ADDR_TYPE 0x0001 - USHORT m_MAC_AddressType; // 0x0001 - - USHORT m_PROTO_AddressType; // 0x0800 - UCHAR m_MAC_AddressSize; // 0x06 - UCHAR m_PROTO_AddressSize; // 0x04 - -# define ARP_REQUEST 0x0001 -# define ARP_REPLY 0x0002 - USHORT m_ARP_Operation; // 0x0001 for ARP request, 0x0002 for ARP reply - - MACADDR m_ARP_MAC_Source; - IPADDR m_ARP_IP_Source; - MACADDR m_ARP_MAC_Destination; - IPADDR m_ARP_IP_Destination; - } -ARP_PACKET, *PARP_PACKET; - -//---------- -// IP Header -//---------- - -typedef struct { -# define IPH_GET_VER(v) (((v) >> 4) & 0x0F) -# define IPH_GET_LEN(v) (((v) & 0x0F) << 2) - UCHAR version_len; - - UCHAR tos; - USHORT tot_len; - USHORT id; - -# define IP_OFFMASK 0x1fff - USHORT frag_off; - - UCHAR ttl; - -# define IPPROTO_UDP 17 /* UDP protocol */ -# define IPPROTO_TCP 6 /* TCP protocol */ -# define IPPROTO_ICMP 1 /* ICMP protocol */ -# define IPPROTO_IGMP 2 /* IGMP protocol */ - UCHAR protocol; - - USHORT check; - ULONG saddr; - ULONG daddr; - /* The options start here. */ -} IPHDR; - -//----------- -// UDP header -//----------- - -typedef struct { - USHORT source; - USHORT dest; - USHORT len; - USHORT check; -} UDPHDR; - -//-------------------------- -// TCP header, per RFC 793. -//-------------------------- - -typedef struct { - USHORT source; /* source port */ - USHORT dest; /* destination port */ - ULONG seq; /* sequence number */ - ULONG ack_seq; /* acknowledgement number */ - -# define TCPH_GET_DOFF(d) (((d) & 0xF0) >> 2) - UCHAR doff_res; - -# define TCPH_FIN_MASK (1<<0) -# define TCPH_SYN_MASK (1<<1) -# define TCPH_RST_MASK (1<<2) -# define TCPH_PSH_MASK (1<<3) -# define TCPH_ACK_MASK (1<<4) -# define TCPH_URG_MASK (1<<5) -# define TCPH_ECE_MASK (1<<6) -# define TCPH_CWR_MASK (1<<7) - UCHAR flags; - - USHORT window; - USHORT check; - USHORT urg_ptr; -} TCPHDR; - -#define TCPOPT_EOL 0 -#define TCPOPT_NOP 1 -#define TCPOPT_MAXSEG 2 -#define TCPOLEN_MAXSEG 4 - -//------------ -// IPv6 Header -//------------ - -typedef struct { - UCHAR version_prio; - UCHAR flow_lbl[3]; - USHORT payload_len; -# define IPPROTO_ICMPV6 0x3a /* ICMP protocol v6 */ - UCHAR nexthdr; - UCHAR hop_limit; - IPV6ADDR saddr; - IPV6ADDR daddr; -} IPV6HDR; - -//-------------------------------------------- -// IPCMPv6 NS/NA Packets (RFC4443 and RFC4861) -//-------------------------------------------- - -// Neighbor Solictiation - RFC 4861, 4.3 -// (this is just the ICMPv6 part of the packet) -typedef struct { - UCHAR type; -# define ICMPV6_TYPE_NS 135 // neighbour solicitation - UCHAR code; -# define ICMPV6_CODE_0 0 // no specific sub-code for NS/NA - USHORT checksum; - ULONG reserved; - IPV6ADDR target_addr; -} ICMPV6_NS; - -// Neighbor Advertisement - RFC 4861, 4.4 + 4.6/4.6.1 -// (this is just the ICMPv6 payload) -typedef struct { - UCHAR type; -# define ICMPV6_TYPE_NA 136 // neighbour advertisement - UCHAR code; -# define ICMPV6_CODE_0 0 // no specific sub-code for NS/NA - USHORT checksum; - UCHAR rso_bits; // Router(0), Solicited(2), Ovrrd(4) - UCHAR reserved[3]; - IPV6ADDR target_addr; -// always include "Target Link-layer Address" option (RFC 4861 4.6.1) - UCHAR opt_type; -#define ICMPV6_OPTION_TLLA 2 - UCHAR opt_length; -#define ICMPV6_LENGTH_TLLA 1 // multiplied by 8 -> 1 = 8 bytes - MACADDR target_macaddr; -} ICMPV6_NA; - -// this is the complete packet with Ethernet and IPv6 headers -typedef struct { - ETH_HEADER eth; - IPV6HDR ipv6; - ICMPV6_NA icmpv6; -} ICMPV6_NA_PKT; - -#pragma pack() diff --git a/tap-win32/prototypes.h b/tap-win32/prototypes.h deleted file mode 100755 index 55454d5..0000000 --- a/tap-win32/prototypes.h +++ /dev/null @@ -1,260 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#ifndef TAP_PROTOTYPES_DEFINED -#define TAP_PROTOTYPES_DEFINED - -NTSTATUS DriverEntry - ( - IN PDRIVER_OBJECT p_DriverObject, - IN PUNICODE_STRING p_RegistryPath - ); - -VOID TapDriverUnload - ( - IN PDRIVER_OBJECT p_DriverObject - ); - -NDIS_STATUS AdapterCreate - ( - OUT PNDIS_STATUS p_ErrorStatus, - OUT PUINT p_MediaIndex, - IN PNDIS_MEDIUM p_Media, - IN UINT p_MediaCount, - IN NDIS_HANDLE p_AdapterHandle, - IN NDIS_HANDLE p_ConfigurationHandle - ); - -VOID AdapterHalt - ( - IN NDIS_HANDLE p_AdapterContext - ); - -VOID AdapterFreeResources - ( - TapAdapterPointer p_Adapter - ); - -NDIS_STATUS AdapterReset - ( - OUT PBOOLEAN p_AddressingReset, - IN NDIS_HANDLE p_AdapterContext - ); - -NDIS_STATUS AdapterQuery - ( - IN NDIS_HANDLE p_AdapterContext, - IN NDIS_OID p_OID, - IN PVOID p_Buffer, - IN ULONG p_BufferLength, - OUT PULONG p_BytesWritten, - OUT PULONG p_BytesNeeded - ); - -NDIS_STATUS AdapterModify - ( - IN NDIS_HANDLE p_AdapterContext, - IN NDIS_OID p_OID, - IN PVOID p_Buffer, - IN ULONG p_BufferLength, - OUT PULONG p_BytesRead, - OUT PULONG p_BytesNeeded - ); - -NDIS_STATUS AdapterTransmit - ( - IN NDIS_HANDLE p_AdapterContext, - IN PNDIS_PACKET p_Packet, - IN UINT p_Flags - ); - -NDIS_STATUS AdapterReceive - ( - OUT PNDIS_PACKET p_Packet, - OUT PUINT p_Transferred, - IN NDIS_HANDLE p_AdapterContext, - IN NDIS_HANDLE p_ReceiveContext, - IN UINT p_Offset, - IN UINT p_ToTransfer - ); - -NTSTATUS TapDeviceHook - ( - IN PDEVICE_OBJECT p_DeviceObject, - IN PIRP p_IRP - ); - -NDIS_STATUS CreateTapDevice - ( - TapExtensionPointer p_Extension, - const char *p_Name - ); - -VOID DestroyTapDevice - ( - TapExtensionPointer p_Extension - ); - -VOID TapDeviceFreeResources - ( - TapExtensionPointer p_Extension - ); - -NTSTATUS CompleteIRP - ( - IN PIRP p_IRP, - IN TapPacketPointer p_PacketBuffer, - IN CCHAR PriorityBoost - ); - -VOID CancelIRPCallback - ( - IN PDEVICE_OBJECT p_DeviceObject, - IN PIRP p_IRP - ); - -VOID CancelIRP - ( - TapExtensionPointer p_Extension, - IN PIRP p_IRP, - BOOLEAN callback - ); - -VOID FlushQueues - ( - TapExtensionPointer p_Extension - ); - -VOID ResetTapAdapterState - ( - TapAdapterPointer p_Adapter - ); - -BOOLEAN ProcessARP - ( - TapAdapterPointer p_Adapter, - const PARP_PACKET src, - const IPADDR adapter_ip, - const IPADDR ip_network, - const IPADDR ip_netmask, - const MACADDR mac - ); - -VOID SetMediaStatus - ( - TapAdapterPointer p_Adapter, - BOOLEAN state - ); - -VOID InjectPacketDeferred - ( - TapAdapterPointer p_Adapter, - UCHAR *packet, - const unsigned int len - ); - -VOID InjectPacketNow - ( - TapAdapterPointer p_Adapter, - UCHAR *packet, - const unsigned int len - ); - -// for KDEFERRED_ROUTINE and Static Driver Verifier -//#include <wdm.h> -//KDEFERRED_ROUTINE InjectPacketDpc; - -VOID InjectPacketDpc - ( - KDPC *Dpc, - PVOID DeferredContext, - PVOID SystemArgument1, - PVOID SystemArgument2 - ); - -VOID CheckIfDhcpAndTunMode - ( - TapAdapterPointer p_Adapter - ); - -VOID HookDispatchFunctions(); - -#if ENABLE_NONADMIN - -#if DDKVER_MAJOR < 5600 -/* - * Better solution for use on Vista DDK, but possibly not compatible with - * earlier DDKs: - * - * Eliminate the definition of SECURITY_DESCRIPTOR (and even ZwSetSecurityObject), - * and at the top of tapdrv.c change: - * - * #include <ndis.h> - * #include <ntstrsafe.h> - * #include <ntddk.h> - * - * To - * - * #include <ntifs.h> - * #include <ndis.h> - * #include <ntstrsafe.h> - */ -typedef struct _SECURITY_DESCRIPTOR { - unsigned char opaque[64]; -} SECURITY_DESCRIPTOR; - -NTSYSAPI -NTSTATUS -NTAPI -ZwSetSecurityObject ( - IN HANDLE Handle, - IN SECURITY_INFORMATION SecurityInformation, - IN PSECURITY_DESCRIPTOR SecurityDescriptor); - -#endif - -VOID AllowNonAdmin (TapExtensionPointer p_Extension); - -#endif - -struct WIN2K_NDIS_MINIPORT_BLOCK -{ - unsigned char opaque[16]; - UNICODE_STRING MiniportName; // how mini-port refers to us -}; - -#if PACKET_TRUNCATION_CHECK - -VOID IPv4PacketSizeVerify - ( - const UCHAR *data, - ULONG length, - BOOLEAN tun, - const char *prefix, - LONG *counter - ); - -#endif - -#endif diff --git a/tap-win32/resource.rc b/tap-win32/resource.rc deleted file mode 100755 index 84884cf..0000000 --- a/tap-win32/resource.rc +++ /dev/null @@ -1,58 +0,0 @@ -#include <windows.h> -#include <ntverp.h> - -/* get VERSION */ -#include "common.h" - -/* VER_FILETYPE, VER_FILESUBTYPE, VER_FILEDESCRIPTION_STR - * and VER_INTERNALNAME_STR must be defined before including COMMON.VER - * The strings don't need a '\0', since common.ver has them. - */ - -#define VER_FILETYPE VFT_DRV -/* possible values: VFT_UNKNOWN - VFT_APP - VFT_DLL - VFT_DRV - VFT_FONT - VFT_VXD - VFT_STATIC_LIB -*/ -#define VER_FILESUBTYPE VFT2_DRV_NETWORK -/* possible values VFT2_UNKNOWN - VFT2_DRV_PRINTER - VFT2_DRV_KEYBOARD - VFT2_DRV_LANGUAGE - VFT2_DRV_DISPLAY - VFT2_DRV_MOUSE - VFT2_DRV_NETWORK - VFT2_DRV_SYSTEM - VFT2_DRV_INSTALLABLE - VFT2_DRV_SOUND - VFT2_DRV_COMM -*/ - -#define VER_COMPANYNAME_STR "The OpenVPN Project" -#define VER_FILEDESCRIPTION_STR "TAP-Win32 Virtual Network Driver" -#define VER_ORIGINALFILENAME_STR TAP_COMPONENT_ID ".sys" -#define VER_LEGALCOPYRIGHT_YEARS "2003-2010" -#define VER_LEGALCOPYRIGHT_STR "OpenVPN Technologies, Inc." - - -#define VER_PRODUCTNAME_STR VER_FILEDESCRIPTION_STR -#define VER_PRODUCTVERSION TAP_DRIVER_MAJOR_VERSION,00,00,TAP_DRIVER_MINOR_VERSION - -#define XSTR(s) STR(s) -#define STR(s) #s - -#define VSTRING PACKAGE_VERSION " " XSTR(TAP_DRIVER_MAJOR_VERSION) "/" XSTR(TAP_DRIVER_MINOR_VERSION) - -#ifdef DBG -#define VER_PRODUCTVERSION_STR VSTRING " (DEBUG)" -#else -#define VER_PRODUCTVERSION_STR VSTRING -#endif - -#define VER_INTERNALNAME_STR VER_ORIGINALFILENAME_STR - -#include "common.ver" diff --git a/tap-win32/tapdrvr.c b/tap-win32/tapdrvr.c deleted file mode 100755 index 7ab3916..0000000 --- a/tap-win32/tapdrvr.c +++ /dev/null @@ -1,3145 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -//====================================================== -// This driver is designed to work on Win 2000 or higher -// versions of Windows. -// -// It is SMP-safe and handles NDIS 5 power management. -// -// By default we operate as a "tap" virtual ethernet -// 802.3 interface, but we can emulate a "tun" -// interface (point-to-point IPv4) through the -// TAP_IOCTL_CONFIG_POINT_TO_POINT or -// TAP_IOCTL_CONFIG_TUN ioctl. -//====================================================== - -#include "common.h" -#ifndef DDKVER_MAJOR -#error DDKVER_MAJOR must be defined as the major number of the DDK Version -#endif - -#define NDIS_MINIPORT_DRIVER -#define BINARY_COMPATIBLE 0 -#define NDIS50_MINIPORT 1 -#define NDIS_WDM 0 -#define NDIS50 1 -#define NTSTRSAFE_LIB - -// Debug info output -#define ALSO_DBGPRINT 1 -#define DEBUGP_AT_DISPATCH 0 - -//======================================================== -// Check for truncated IPv4 packets, log errors if found. -//======================================================== -#define PACKET_TRUNCATION_CHECK 0 - -//======================================================== -// EXPERIMENTAL -- Configure TAP device object to be -// accessible from non-administrative accounts, based -// on an advanced properties setting. -// -// Duplicates the functionality of OpenVPN's -// --allow-nonadmin directive. -//======================================================== -#define ENABLE_NONADMIN 1 - -#if DDKVER_MAJOR < 5600 -#include <ndis.h> -#include <ntstrsafe.h> -#include <ntddk.h> -#else -#include <ntifs.h> -#include <ndis.h> -#include <ntstrsafe.h> -#endif - -#include "lock.h" -#include "constants.h" -#include "proto.h" -#include "error.h" -#include "endian.h" -#include "dhcp.h" -#include "types.h" -#include "prototypes.h" - -#include "mem.c" -#include "macinfo.c" -#include "error.c" -#include "dhcp.c" -#include "instance.c" - -#define IS_UP(ta) \ - ((ta)->m_InterfaceIsRunning && (ta)->m_Extension.m_TapIsRunning) - -#define INCREMENT_STAT(s) ++(s) - -#define NAME_BUFFER_SIZE 80 - -//======================================================== -// Globals -//======================================================== - -NDIS_HANDLE g_NdisWrapperHandle; - -const UINT g_SupportedOIDList[] = { - OID_GEN_HARDWARE_STATUS, - OID_GEN_MEDIA_SUPPORTED, - OID_GEN_MEDIA_IN_USE, - OID_GEN_MAXIMUM_LOOKAHEAD, - OID_GEN_MAC_OPTIONS, - OID_GEN_LINK_SPEED, - OID_GEN_TRANSMIT_BLOCK_SIZE, - OID_GEN_RECEIVE_BLOCK_SIZE, - OID_GEN_VENDOR_DESCRIPTION, - OID_GEN_DRIVER_VERSION, - OID_GEN_XMIT_OK, - OID_GEN_RCV_OK, - OID_GEN_XMIT_ERROR, - OID_GEN_RCV_ERROR, - OID_802_3_PERMANENT_ADDRESS, - OID_802_3_CURRENT_ADDRESS, - OID_GEN_RCV_NO_BUFFER, - OID_802_3_RCV_ERROR_ALIGNMENT, - OID_802_3_XMIT_ONE_COLLISION, - OID_802_3_XMIT_MORE_COLLISIONS, - OID_802_3_MULTICAST_LIST, - OID_802_3_MAXIMUM_LIST_SIZE, - OID_GEN_VENDOR_ID, - OID_GEN_CURRENT_LOOKAHEAD, - OID_GEN_CURRENT_PACKET_FILTER, - OID_GEN_PROTOCOL_OPTIONS, - OID_GEN_MAXIMUM_TOTAL_SIZE, - OID_GEN_TRANSMIT_BUFFER_SPACE, - OID_GEN_RECEIVE_BUFFER_SPACE, - OID_GEN_MAXIMUM_FRAME_SIZE, - OID_GEN_VENDOR_DRIVER_VERSION, - OID_GEN_MAXIMUM_SEND_PACKETS, - OID_GEN_MEDIA_CONNECT_STATUS, - OID_GEN_SUPPORTED_LIST -}; - -//============================================================ -// Driver Entry -//============================================================ -#pragma NDIS_INIT_FUNCTION (DriverEntry) - -NTSTATUS -DriverEntry (IN PDRIVER_OBJECT p_DriverObject, - IN PUNICODE_STRING p_RegistryPath) -{ - NDIS_STATUS l_Status = NDIS_STATUS_FAILURE; - NDIS_MINIPORT_CHARACTERISTICS *l_Properties = NULL; - - //======================================================== - // Notify NDIS that a new miniport driver is initializing. - //======================================================== - - NdisMInitializeWrapper (&g_NdisWrapperHandle, - p_DriverObject, - p_RegistryPath, NULL); - - //====================== - // Global initialization - //====================== - -#if DBG - MyDebugInit (10000); // Allocate debugging text space -#endif - - if (!InitInstanceList ()) - { - DEBUGP (("[TAP] Allocation failed for adapter instance list\n")); - goto cleanup; - } - - //======================================= - // Set and register miniport entry points - //======================================= - - l_Properties = MemAlloc (sizeof (NDIS_MINIPORT_CHARACTERISTICS), TRUE); - - if (l_Properties == NULL) - { - DEBUGP (("[TAP] Allocation failed for miniport entry points\n")); - goto cleanup; - } - - l_Properties->MajorNdisVersion = TAP_NDIS_MAJOR_VERSION; - l_Properties->MinorNdisVersion = TAP_NDIS_MINOR_VERSION; - l_Properties->InitializeHandler = AdapterCreate; - l_Properties->HaltHandler = AdapterHalt; - l_Properties->ResetHandler = AdapterReset; /* DISPATCH_LEVEL */ - l_Properties->TransferDataHandler = AdapterReceive; /* DISPATCH_LEVEL */ - l_Properties->SendHandler = AdapterTransmit; /* DISPATCH_LEVEL */ - l_Properties->QueryInformationHandler = AdapterQuery; /* DISPATCH_LEVEL */ - l_Properties->SetInformationHandler = AdapterModify; /* DISPATCH_LEVEL */ - - switch (l_Status = - NdisMRegisterMiniport (g_NdisWrapperHandle, l_Properties, - sizeof (NDIS_MINIPORT_CHARACTERISTICS))) - { - case NDIS_STATUS_SUCCESS: - { - DEBUGP (("[TAP] version [%d.%d] %s %s registered miniport successfully\n", - TAP_DRIVER_MAJOR_VERSION, - TAP_DRIVER_MINOR_VERSION, - __DATE__, - __TIME__)); - DEBUGP (("Registry Path: '%.*S'\n", p_RegistryPath->Length/2, p_RegistryPath->Buffer)); - break; - } - - case NDIS_STATUS_BAD_CHARACTERISTICS: - { - DEBUGP (("[TAP] Miniport characteristics were badly defined\n")); - NdisTerminateWrapper (g_NdisWrapperHandle, NULL); - break; - } - - case NDIS_STATUS_BAD_VERSION: - { - DEBUGP - (("[TAP] NDIS Version is wrong for the given characteristics\n")); - NdisTerminateWrapper (g_NdisWrapperHandle, NULL); - break; - } - - case NDIS_STATUS_RESOURCES: - { - DEBUGP (("[TAP] Insufficient resources\n")); - NdisTerminateWrapper (g_NdisWrapperHandle, NULL); - break; - } - - default: - case NDIS_STATUS_FAILURE: - { - DEBUGP (("[TAP] Unknown fatal registration error\n")); - NdisTerminateWrapper (g_NdisWrapperHandle, NULL); - break; - } - } - - cleanup: - if (l_Properties) - MemFree (l_Properties, sizeof (NDIS_MINIPORT_CHARACTERISTICS)); - - if (l_Status == NDIS_STATUS_SUCCESS) - NdisMRegisterUnloadHandler (g_NdisWrapperHandle, TapDriverUnload); - else - TapDriverUnload (p_DriverObject); - - return l_Status; -} - -//============================================================ -// Driver Unload -//============================================================ -VOID -TapDriverUnload (IN PDRIVER_OBJECT p_DriverObject) -{ - DEBUGP (("[TAP] version [%d.%d] %s %s unloaded, instances=%d, imbs=%d\n", - TAP_DRIVER_MAJOR_VERSION, - TAP_DRIVER_MINOR_VERSION, - __DATE__, - __TIME__, - NInstances(), - InstanceMaxBucketSize())); - - FreeInstanceList (); - - //============================== - // Free debugging text space - //============================== -#if DBG - MyDebugFree (); -#endif -} - -//========================================================== -// Adapter Initialization -//========================================================== -NDIS_STATUS AdapterCreate -(OUT PNDIS_STATUS p_ErrorStatus, - OUT PUINT p_MediaIndex, - IN PNDIS_MEDIUM p_Media, - IN UINT p_MediaCount, - IN NDIS_HANDLE p_AdapterHandle, - IN NDIS_HANDLE p_ConfigurationHandle) -{ - TapAdapterPointer l_Adapter = NULL; - - NDIS_MEDIUM l_PreferredMedium = NdisMedium802_3; // Ethernet - BOOLEAN l_MacFromRegistry = FALSE; - UINT l_Index; - NDIS_STATUS status; - -#if ENABLE_NONADMIN - BOOLEAN enable_non_admin = FALSE; -#endif - - DEBUGP (("[TAP] AdapterCreate called\n")); - - //==================================== - // Make sure adapter type is supported - //==================================== - - for (l_Index = 0; - l_Index < p_MediaCount && p_Media[l_Index] != l_PreferredMedium; - ++l_Index); - - if (l_Index == p_MediaCount) - { - DEBUGP (("[TAP] Unsupported adapter type [wanted: %d]\n", - l_PreferredMedium)); - return NDIS_STATUS_UNSUPPORTED_MEDIA; - } - - *p_MediaIndex = l_Index; - - //========================================= - // Allocate memory for TapAdapter structure - //========================================= - - l_Adapter = MemAlloc (sizeof (TapAdapter), TRUE); - - if (l_Adapter == NULL) - { - DEBUGP (("[TAP] Couldn't allocate adapter memory\n")); - return NDIS_STATUS_RESOURCES; - } - - //========================================== - // Inform the NDIS library about significant - // features of our virtual NIC. - //========================================== - - NdisMSetAttributesEx - (p_AdapterHandle, - (NDIS_HANDLE) l_Adapter, - 16, - NDIS_ATTRIBUTE_DESERIALIZE - | NDIS_ATTRIBUTE_IGNORE_PACKET_TIMEOUT - | NDIS_ATTRIBUTE_IGNORE_REQUEST_TIMEOUT - | NDIS_ATTRIBUTE_NO_HALT_ON_SUSPEND, - NdisInterfaceInternal); - - //===================================== - // Initialize simple Adapter parameters - //===================================== - - l_Adapter->m_Lookahead = DEFAULT_PACKET_LOOKAHEAD; - l_Adapter->m_Medium = l_PreferredMedium; - l_Adapter->m_DeviceState = '?'; - l_Adapter->m_MiniportAdapterHandle = p_AdapterHandle; - - //================================== - // Allocate spinlock for controlling - // access to multicast address list. - //================================== - NdisAllocateSpinLock (&l_Adapter->m_MCLock); - l_Adapter->m_MCLockAllocated = TRUE; - - //==================================================== - // Register a shutdown handler which will be called - // on system restart/shutdown to halt our virtual NIC. - //==================================================== - - NdisMRegisterAdapterShutdownHandler (p_AdapterHandle, l_Adapter, - AdapterHalt); - l_Adapter->m_RegisteredAdapterShutdownHandler = TRUE; - - //============================================ - // Get parameters from registry which were set - // in the adapter advanced properties dialog. - //============================================ - { - NDIS_STATUS status; - NDIS_HANDLE configHandle; - NDIS_CONFIGURATION_PARAMETER *parm; - - // set defaults in case our registry query fails - l_Adapter->m_MTU = ETHERNET_MTU; - l_Adapter->m_MediaStateAlwaysConnected = FALSE; - l_Adapter->m_MediaState = FALSE; - - NdisOpenConfiguration (&status, &configHandle, p_ConfigurationHandle); - if (status != NDIS_STATUS_SUCCESS) - { - DEBUGP (("[TAP] Couldn't open adapter registry\n")); - AdapterFreeResources (l_Adapter); - return status; - } - - //==================================== - // Allocate and construct adapter name - //==================================== - { - - NDIS_STRING mkey = NDIS_STRING_CONST("MiniportName"); - NDIS_STRING vkey = NDIS_STRING_CONST("NdisVersion"); - NDIS_STATUS vstatus; - NDIS_CONFIGURATION_PARAMETER *vparm; - - NdisReadConfiguration (&vstatus, &vparm, configHandle, &vkey, NdisParameterInteger); - if (vstatus == NDIS_STATUS_SUCCESS) - DEBUGP (("[TAP] NdisReadConfiguration NdisVersion=%X\n", vparm->ParameterData.IntegerData)); - - NdisReadConfiguration (&status, &parm, configHandle, &mkey, NdisParameterString); - if (status == NDIS_STATUS_SUCCESS) - { - if (parm->ParameterType == NdisParameterString) - { - DEBUGP (("[TAP] NdisReadConfiguration (MiniportName=%.*S)\n", - parm->ParameterData.StringData.Length/2, - parm->ParameterData.StringData.Buffer)); - - if (RtlUnicodeStringToAnsiString ( - &l_Adapter->m_NameAnsi, - &parm->ParameterData.StringData, - TRUE) != STATUS_SUCCESS) - { - DEBUGP (("[TAP] MiniportName failed\n")); - status = NDIS_STATUS_RESOURCES; - } - } - } - else - { - /* "MiniportName" is available only XP and above. Not on Windows 2000. */ - if (vstatus == NDIS_STATUS_SUCCESS && vparm->ParameterData.IntegerData == 0x50000) - { - /* Fallback for Windows 2000 with NDIS version 5.00.00 - Don't use this on Vista, 'NDIS_MINIPORT_BLOCK' was changed! */ - if (RtlUnicodeStringToAnsiString (&l_Adapter->m_NameAnsi, - &((struct WIN2K_NDIS_MINIPORT_BLOCK *) p_AdapterHandle)->MiniportName, - TRUE) != STATUS_SUCCESS) - { - DEBUGP (("[TAP] MiniportName (W2K) failed\n")); - status = NDIS_STATUS_RESOURCES; - } - else - { - DEBUGP (("[TAP] MiniportName (W2K) succeeded: %s\n", l_Adapter->m_NameAnsi.Buffer)); - status = NDIS_STATUS_SUCCESS; - } - } - } - } - - /* Can't continue without name (see macro 'NAME') */ - if (status != NDIS_STATUS_SUCCESS || !l_Adapter->m_NameAnsi.Buffer) - { - NdisCloseConfiguration (configHandle); - AdapterFreeResources (l_Adapter); - DEBUGP (("[TAP] failed to get miniport name\n")); - return NDIS_STATUS_RESOURCES; - } - - /* Read MTU setting from registry */ - { - NDIS_STRING key = NDIS_STRING_CONST("MTU"); - NdisReadConfiguration (&status, &parm, configHandle, - &key, NdisParameterInteger); - if (status == NDIS_STATUS_SUCCESS) - { - if (parm->ParameterType == NdisParameterInteger) - { - int mtu = parm->ParameterData.IntegerData; - if (mtu < MINIMUM_MTU) - mtu = MINIMUM_MTU; - if (mtu > MAXIMUM_MTU) - mtu = MAXIMUM_MTU; - l_Adapter->m_MTU = mtu; - } - } - } - - /* Read Media Status setting from registry */ - { - NDIS_STRING key = NDIS_STRING_CONST("MediaStatus"); - NdisReadConfiguration (&status, &parm, configHandle, - &key, NdisParameterInteger); - if (status == NDIS_STATUS_SUCCESS) - { - if (parm->ParameterType == NdisParameterInteger) - { - if (parm->ParameterData.IntegerData) - { - l_Adapter->m_MediaStateAlwaysConnected = TRUE; - l_Adapter->m_MediaState = TRUE; - } - } - } - } - -#if ENABLE_NONADMIN - /* Read AllowNonAdmin setting from registry */ - { - NDIS_STRING key = NDIS_STRING_CONST("AllowNonAdmin"); - NdisReadConfiguration (&status, &parm, configHandle, - &key, NdisParameterInteger); - if (status == NDIS_STATUS_SUCCESS) - { - if (parm->ParameterType == NdisParameterInteger) - { - if (parm->ParameterData.IntegerData) - { - enable_non_admin = TRUE; - } - } - } - } -#endif - - /* Read optional MAC setting from registry */ - { - NDIS_STRING key = NDIS_STRING_CONST("MAC"); - ANSI_STRING mac_string; - NdisReadConfiguration (&status, &parm, configHandle, - &key, NdisParameterString); - if (status == NDIS_STATUS_SUCCESS) - { - if (parm->ParameterType == NdisParameterString) - { - if (RtlUnicodeStringToAnsiString (&mac_string, &parm->ParameterData.StringData, TRUE) == STATUS_SUCCESS) - { - l_MacFromRegistry = ParseMAC (l_Adapter->m_MAC, mac_string.Buffer); - RtlFreeAnsiString (&mac_string); - } - } - } - } - - NdisCloseConfiguration (configHandle); - - DEBUGP (("[%s] MTU=%d\n", NAME (l_Adapter), l_Adapter->m_MTU)); - } - - //================================== - // Store and update MAC address info - //================================== - - if (!l_MacFromRegistry) - GenerateRandomMac (l_Adapter->m_MAC, NAME (l_Adapter)); - - DEBUGP (("[%s] Using MAC %x:%x:%x:%x:%x:%x\n", - NAME (l_Adapter), - l_Adapter->m_MAC[0], l_Adapter->m_MAC[1], l_Adapter->m_MAC[2], - l_Adapter->m_MAC[3], l_Adapter->m_MAC[4], l_Adapter->m_MAC[5])); - - //================== - // Set broadcast MAC - //================== - { - int i; - for (i = 0; i < sizeof (MACADDR); ++i) - l_Adapter->m_MAC_Broadcast[i] = 0xFF; - } - - //==================================== - // Initialize TAP device - //==================================== - { - NDIS_STATUS tap_status; - tap_status = CreateTapDevice (&l_Adapter->m_Extension, NAME (l_Adapter)); - if (tap_status != NDIS_STATUS_SUCCESS) - { - AdapterFreeResources (l_Adapter); - DEBUGP (("[TAP] CreateTapDevice failed\n")); - return tap_status; - } - } - - if (!AddAdapterToInstanceList (l_Adapter)) - { - NOTE_ERROR (); - TapDeviceFreeResources (&l_Adapter->m_Extension); - AdapterFreeResources (l_Adapter); - DEBUGP (("[TAP] AddAdapterToInstanceList failed\n")); - return NDIS_STATUS_RESOURCES; - } - - l_Adapter->m_InterfaceIsRunning = TRUE; - -#if ENABLE_NONADMIN - if (enable_non_admin) - AllowNonAdmin (&l_Adapter->m_Extension); -#endif - - return NDIS_STATUS_SUCCESS; -} - -VOID -AdapterHalt (IN NDIS_HANDLE p_AdapterContext) -{ - BOOLEAN status; - - TapAdapterPointer l_Adapter = (TapAdapterPointer) p_AdapterContext; - - NOTE_ERROR (); - - l_Adapter->m_InterfaceIsRunning = FALSE; - - DEBUGP (("[%s] is being halted\n", NAME (l_Adapter))); - - DestroyTapDevice (&l_Adapter->m_Extension); - - // Free resources - DEBUGP (("[%s] Freeing Resources\n", NAME (l_Adapter))); - AdapterFreeResources (l_Adapter); - - status = RemoveAdapterFromInstanceList (l_Adapter); - DEBUGP (("[TAP] RemoveAdapterFromInstanceList returned %d\n", (int) status)); - - DEBUGP (("[TAP] version [%d.%d] %s %s AdapterHalt returning\n", - TAP_DRIVER_MAJOR_VERSION, - TAP_DRIVER_MINOR_VERSION, - __DATE__, - __TIME__)); -} - -VOID -AdapterFreeResources (TapAdapterPointer p_Adapter) -{ - MYASSERT (!p_Adapter->m_CalledAdapterFreeResources); - p_Adapter->m_CalledAdapterFreeResources = TRUE; - - if (p_Adapter->m_NameAnsi.Buffer) - RtlFreeAnsiString (&p_Adapter->m_NameAnsi); - - if (p_Adapter->m_RegisteredAdapterShutdownHandler) - NdisMDeregisterAdapterShutdownHandler (p_Adapter->m_MiniportAdapterHandle); - - if (p_Adapter->m_MCLockAllocated) - NdisFreeSpinLock (&p_Adapter->m_MCLock); -} - -VOID -DestroyTapDevice (TapExtensionPointer p_Extension) -{ - DEBUGP (("[%s] Destroying tap device\n", p_Extension->m_TapName)); - - //====================================== - // Let clients know we are shutting down - //====================================== - p_Extension->m_TapIsRunning = FALSE; - p_Extension->m_TapOpens = 0; - p_Extension->m_Halt = TRUE; - - //===================================== - // If we are concurrently executing in - // TapDeviceHook or AdapterTransmit, - // give those calls time to finish. - // Note that we must be running at IRQL - // < DISPATCH_LEVEL in order to call - // NdisMSleep. - //===================================== - NdisMSleep (500000); - - //=========================================================== - // Exhaust IRP and packet queues. Any pending IRPs will - // be cancelled, causing user-space to get this error - // on overlapped reads: - // The I/O operation has been aborted because of either a - // thread exit or an application request. (code=995) - // It's important that user-space close the device handle - // when this code is returned, so that when we finally - // do a NdisMDeregisterDevice, the device reference count - // is 0. Otherwise the driver will not unload even if the - // the last adapter has been halted. - //=========================================================== - FlushQueues (p_Extension); - NdisMSleep (500000); // give user space time to respond to IRP cancel - - TapDeviceFreeResources (p_Extension); -} - -VOID -TapDeviceFreeResources (TapExtensionPointer p_Extension) -{ - MYASSERT (p_Extension); - MYASSERT (!p_Extension->m_CalledTapDeviceFreeResources); - p_Extension->m_CalledTapDeviceFreeResources = TRUE; - - if (p_Extension->m_PacketQueue) - QueueFree (p_Extension->m_PacketQueue); - if (p_Extension->m_IrpQueue) - QueueFree (p_Extension->m_IrpQueue); - if (p_Extension->m_InjectQueue) - QueueFree (p_Extension->m_InjectQueue); - - if (p_Extension->m_CreatedUnicodeLinkName) - RtlFreeUnicodeString (&p_Extension->m_UnicodeLinkName); - - //========================================================== - // According to DDK docs, the device is not actually deleted - // until its reference count falls to zero. That means we - // still need to gracefully fail TapDeviceHook requests - // after this point, otherwise ugly things would happen if - // the device was disabled (e.g. in the network connections - // control panel) while a userspace app still held an open - // file handle to it. - //========================================================== - - if (p_Extension->m_TapDevice) - { - BOOLEAN status; - status = (NdisMDeregisterDevice (p_Extension->m_TapDeviceHandle) - == NDIS_STATUS_SUCCESS); - DEBUGP (("[TAP] Deregistering TAP device, status=%d\n", (int)status)); - } - - if (p_Extension->m_TapName) - MemFree (p_Extension->m_TapName, NAME_BUFFER_SIZE); - - if (p_Extension->m_InjectDpcInitialized) - KeRemoveQueueDpc (&p_Extension->m_InjectDpc); - - if (p_Extension->m_AllocatedSpinlocks) - { - NdisFreeSpinLock (&p_Extension->m_QueueLock); - NdisFreeSpinLock (&p_Extension->m_InjectLock); - } -} - -//======================================================================== -// Tap Device Initialization -//======================================================================== - -NDIS_STATUS -CreateTapDevice (TapExtensionPointer p_Extension, const char *p_Name) -{ -# define SIZEOF_DISPATCH (sizeof(PDRIVER_DISPATCH) * (IRP_MJ_MAXIMUM_FUNCTION + 1)) - PDRIVER_DISPATCH *l_Dispatch = NULL; - ANSI_STRING l_TapString, l_LinkString; - UNICODE_STRING l_TapUnicode; - BOOLEAN l_FreeTapUnicode = FALSE; - NTSTATUS l_Status, l_Return = NDIS_STATUS_SUCCESS; - const char *l_UsableName; - - DEBUGP (("[TAP] version [%d.%d] creating tap device: %s\n", - TAP_DRIVER_MAJOR_VERSION, - TAP_DRIVER_MINOR_VERSION, - p_Name)); - - NdisZeroMemory (p_Extension, sizeof (TapExtension)); - - INIT_MUTEX (&p_Extension->m_OpenCloseMutex); - - l_LinkString.Buffer = NULL; - l_TapString.Buffer = NULL; - - l_TapString.MaximumLength = l_LinkString.MaximumLength = NAME_BUFFER_SIZE; - - //======================================= - // Set TAP device entry points - //======================================= - - if ((l_Dispatch = MemAlloc (SIZEOF_DISPATCH, TRUE)) == NULL) - { - DEBUGP (("[%s] couldn't alloc TAP dispatch table\n", p_Name)); - l_Return = NDIS_STATUS_RESOURCES; - goto cleanup; - } - - l_Dispatch[IRP_MJ_DEVICE_CONTROL] = TapDeviceHook; - l_Dispatch[IRP_MJ_READ] = TapDeviceHook; - l_Dispatch[IRP_MJ_WRITE] = TapDeviceHook; - l_Dispatch[IRP_MJ_CREATE] = TapDeviceHook; - l_Dispatch[IRP_MJ_CLOSE] = TapDeviceHook; - - //================================== - // Find the beginning of the GUID - //================================== - l_UsableName = p_Name; - while (*l_UsableName != '{') - { - if (*l_UsableName == '\0') - { - DEBUGP (("[%s] couldn't find leading '{' in name\n", p_Name)); - l_Return = NDIS_STATUS_RESOURCES; - goto cleanup; - } - ++l_UsableName; - } - - //================================== - // Allocate pool for TAP device name - //================================== - - if ((p_Extension->m_TapName = l_TapString.Buffer = - MemAlloc (NAME_BUFFER_SIZE, TRUE)) == NULL) - { - DEBUGP (("[%s] couldn't alloc TAP name buffer\n", p_Name)); - l_Return = NDIS_STATUS_RESOURCES; - goto cleanup; - } - - //================================================ - // Allocate pool for TAP symbolic link name buffer - //================================================ - - if ((l_LinkString.Buffer = - MemAlloc (NAME_BUFFER_SIZE, TRUE)) == NULL) - { - DEBUGP (("[%s] couldn't alloc TAP symbolic link name buffer\n", - p_Name)); - l_Return = NDIS_STATUS_RESOURCES; - goto cleanup; - } - - //======================================================= - // Set TAP device name - //======================================================= - - l_Status = RtlStringCchPrintfExA - (l_TapString.Buffer, - l_TapString.MaximumLength, - NULL, - NULL, - STRSAFE_FILL_BEHIND_NULL | STRSAFE_IGNORE_NULLS, - "%s%s%s", - SYSDEVICEDIR, - l_UsableName, - TAPSUFFIX); - - if (l_Status != STATUS_SUCCESS) - { - DEBUGP (("[%s] couldn't format TAP device name\n", - p_Name)); - l_Return = NDIS_STATUS_RESOURCES; - goto cleanup; - } - l_TapString.Length = (USHORT) strlen (l_TapString.Buffer); - - DEBUGP (("TAP DEV NAME: '%s'\n", l_TapString.Buffer)); - - //======================================================= - // Set TAP link name - //======================================================= - - l_Status = RtlStringCchPrintfExA - (l_LinkString.Buffer, - l_LinkString.MaximumLength, - NULL, - NULL, - STRSAFE_FILL_BEHIND_NULL | STRSAFE_IGNORE_NULLS, - "%s%s%s", - USERDEVICEDIR, - l_UsableName, - TAPSUFFIX); - - if (l_Status != STATUS_SUCCESS) - { - DEBUGP (("[%s] couldn't format TAP device symbolic link\n", - p_Name)); - l_Return = NDIS_STATUS_RESOURCES; - goto cleanup; - } - l_LinkString.Length = (USHORT) strlen (l_LinkString.Buffer); - - DEBUGP (("TAP LINK NAME: '%s'\n", l_LinkString.Buffer)); - - //================================================== - // Convert strings to unicode - //================================================== - if (RtlAnsiStringToUnicodeString (&l_TapUnicode, &l_TapString, TRUE) != - STATUS_SUCCESS) - { - DEBUGP (("[%s] couldn't alloc TAP unicode name buffer\n", - p_Name)); - l_Return = NDIS_STATUS_RESOURCES; - goto cleanup; - } - l_FreeTapUnicode = TRUE; - - if (RtlAnsiStringToUnicodeString - (&p_Extension->m_UnicodeLinkName, &l_LinkString, TRUE) - != STATUS_SUCCESS) - { - DEBUGP - (("[%s] Couldn't allocate unicode string for symbolic link name\n", - p_Name)); - l_Return = NDIS_STATUS_RESOURCES; - goto cleanup; - } - p_Extension->m_CreatedUnicodeLinkName = TRUE; - - //================================================== - // Create new TAP device with symbolic - // link and associate with adapter. - //================================================== - - l_Status = NdisMRegisterDevice - (g_NdisWrapperHandle, - &l_TapUnicode, - &p_Extension->m_UnicodeLinkName, - l_Dispatch, - &p_Extension->m_TapDevice, - &p_Extension->m_TapDeviceHandle - ); - - if (l_Status != STATUS_SUCCESS) - { - DEBUGP (("[%s] couldn't be created\n", p_Name)); - l_Return = NDIS_STATUS_RESOURCES; - goto cleanup; - } - - /* Set TAP device flags */ - p_Extension->m_TapDevice->Flags |= DO_DIRECT_IO; - - //======================================================== - // Initialize Packet and IRP queues. - // - // The packet queue is used to buffer data which has been - // "transmitted" by the virtual NIC, before user space - // has had a chance to read it. - // - // The IRP queue is used to buffer pending I/O requests - // from userspace, i.e. read requests on the TAP device - // waiting for the system to "transmit" something through - // the virtual NIC. - // - // Basically, packets in the packet queue are used - // to satisfy IRP requests in the IRP queue. - // - // QueueLock is used to lock the packet queue used - // for the TAP-Win32 NIC -> User Space packet flow direction. - // - // All accesses to packet or IRP queues should be - // bracketed by the QueueLock spinlock, - // in order to be SMP-safe. - //======================================================== - - NdisAllocateSpinLock (&p_Extension->m_QueueLock); - NdisAllocateSpinLock (&p_Extension->m_InjectLock); - p_Extension->m_AllocatedSpinlocks = TRUE; - - p_Extension->m_PacketQueue = QueueInit (PACKET_QUEUE_SIZE); - p_Extension->m_IrpQueue = QueueInit (IRP_QUEUE_SIZE); - p_Extension->m_InjectQueue = QueueInit (INJECT_QUEUE_SIZE); - if (!p_Extension->m_PacketQueue - || !p_Extension->m_IrpQueue - || !p_Extension->m_InjectQueue) - { - DEBUGP (("[%s] couldn't alloc TAP queues\n", p_Name)); - l_Return = NDIS_STATUS_RESOURCES; - goto cleanup; - } - - //================================================================= - // Initialize deferred procedure call for DHCP/ARP packet injection - //================================================================= - - KeInitializeDpc (&p_Extension->m_InjectDpc, InjectPacketDpc, NULL); - p_Extension->m_InjectDpcInitialized = TRUE; - - //======================== - // Finalize initialization - //======================== - - p_Extension->m_TapIsRunning = TRUE; - - DEBUGP (("[%s] successfully created TAP device [%s]\n", p_Name, - p_Extension->m_TapName)); - - cleanup: - if (l_FreeTapUnicode) - RtlFreeUnicodeString (&l_TapUnicode); - if (l_LinkString.Buffer) - MemFree (l_LinkString.Buffer, NAME_BUFFER_SIZE); - if (l_Dispatch) - MemFree (l_Dispatch, SIZEOF_DISPATCH); - - if (l_Return != NDIS_STATUS_SUCCESS) - TapDeviceFreeResources (p_Extension); - - return l_Return; -} -#undef SIZEOF_DISPATCH - -//======================================================== -// Adapter Control -//======================================================== -NDIS_STATUS -AdapterReset (OUT PBOOLEAN p_AddressingReset, IN NDIS_HANDLE p_AdapterContext) -{ - TapAdapterPointer l_Adapter = (TapAdapterPointer) p_AdapterContext; - DEBUGP (("[%s] is resetting\n", NAME (l_Adapter))); - return NDIS_STATUS_SUCCESS; -} - -NDIS_STATUS AdapterReceive - (OUT PNDIS_PACKET p_Packet, - OUT PUINT p_Transferred, - IN NDIS_HANDLE p_AdapterContext, - IN NDIS_HANDLE p_ReceiveContext, - IN UINT p_Offset, - IN UINT p_ToTransfer) -{ - return NDIS_STATUS_SUCCESS; -} - -//============================================================== -// Adapter Option Query/Modification -//============================================================== -NDIS_STATUS AdapterQuery -(IN NDIS_HANDLE p_AdapterContext, - IN NDIS_OID p_OID, - IN PVOID p_Buffer, - IN ULONG p_BufferLength, - OUT PULONG p_BytesWritten, OUT PULONG p_BytesNeeded) -{ - TapAdapterPointer l_Adapter = (TapAdapterPointer) p_AdapterContext; - TapAdapterQuery l_Query, *l_QueryPtr = &l_Query; - NDIS_STATUS l_Status = NDIS_STATUS_SUCCESS; - UINT l_QueryLength = 4; - BOOLEAN lock_succeeded; - - NdisZeroMemory (&l_Query, sizeof (l_Query)); - - switch (p_OID) - { - //=================================================================== - // Vendor & Driver version Info - //=================================================================== - case OID_GEN_VENDOR_DESCRIPTION: - l_QueryPtr = (TapAdapterQueryPointer) PRODUCT_STRING; - l_QueryLength = strlen (PRODUCT_STRING) + 1; - break; - - case OID_GEN_VENDOR_ID: - l_Query.m_Long = 0xffffff; - break; - - case OID_GEN_DRIVER_VERSION: - l_Query.m_Short = - (((USHORT) TAP_NDIS_MAJOR_VERSION) << 8 | (USHORT) - TAP_NDIS_MINOR_VERSION); - l_QueryLength = sizeof (unsigned short); - break; - - case OID_GEN_VENDOR_DRIVER_VERSION: - l_Query.m_Long = - (((USHORT) TAP_DRIVER_MAJOR_VERSION) << 8 | (USHORT) - TAP_DRIVER_MINOR_VERSION); - break; - - //================================================================= - // Statistics - //================================================================= - case OID_GEN_RCV_NO_BUFFER: - l_Query.m_Long = 0; - break; - - case OID_802_3_RCV_ERROR_ALIGNMENT: - l_Query.m_Long = 0; - break; - - case OID_802_3_XMIT_ONE_COLLISION: - l_Query.m_Long = 0; - break; - - case OID_802_3_XMIT_MORE_COLLISIONS: - l_Query.m_Long = 0; - break; - - case OID_GEN_XMIT_OK: - l_Query.m_Long = l_Adapter->m_Tx; - break; - - case OID_GEN_RCV_OK: - l_Query.m_Long = l_Adapter->m_Rx; - break; - - case OID_GEN_XMIT_ERROR: - l_Query.m_Long = l_Adapter->m_TxErr; - break; - - case OID_GEN_RCV_ERROR: - l_Query.m_Long = l_Adapter->m_RxErr; - break; - - //=================================================================== - // Device & Protocol Options - //=================================================================== - case OID_GEN_SUPPORTED_LIST: - l_QueryPtr = (TapAdapterQueryPointer) g_SupportedOIDList; - l_QueryLength = sizeof (g_SupportedOIDList); - break; - - case OID_GEN_MAC_OPTIONS: - // This MUST be here !!! - l_Query.m_Long = (NDIS_MAC_OPTION_RECEIVE_SERIALIZED - | NDIS_MAC_OPTION_COPY_LOOKAHEAD_DATA - | NDIS_MAC_OPTION_NO_LOOPBACK - | NDIS_MAC_OPTION_TRANSFERS_NOT_PEND); - - break; - - case OID_GEN_CURRENT_PACKET_FILTER: - l_Query.m_Long = - (NDIS_PACKET_TYPE_ALL_LOCAL | - NDIS_PACKET_TYPE_BROADCAST | - NDIS_PACKET_TYPE_DIRECTED | NDIS_PACKET_TYPE_ALL_FUNCTIONAL); - - break; - - case OID_GEN_PROTOCOL_OPTIONS: - l_Query.m_Long = 0; - break; - - //================================================================== - // Device Info - //================================================================== - case OID_GEN_MEDIA_CONNECT_STATUS: - l_Query.m_Long = l_Adapter->m_MediaState - ? NdisMediaStateConnected : NdisMediaStateDisconnected; - break; - - case OID_GEN_HARDWARE_STATUS: - l_Query.m_HardwareStatus = NdisHardwareStatusReady; - l_QueryLength = sizeof (NDIS_HARDWARE_STATUS); - break; - - case OID_GEN_MEDIA_SUPPORTED: - case OID_GEN_MEDIA_IN_USE: - l_Query.m_Medium = l_Adapter->m_Medium; - l_QueryLength = sizeof (NDIS_MEDIUM); - break; - - case OID_GEN_PHYSICAL_MEDIUM: - l_Query.m_PhysicalMedium = NdisPhysicalMediumUnspecified; - l_QueryLength = sizeof (NDIS_PHYSICAL_MEDIUM); - break; - - case OID_GEN_LINK_SPEED: - l_Query.m_Long = 100000; // rate / 100 bps - break; - - case OID_802_3_PERMANENT_ADDRESS: - case OID_802_3_CURRENT_ADDRESS: - COPY_MAC (l_Query.m_MacAddress, l_Adapter->m_MAC); - l_QueryLength = sizeof (MACADDR); - break; - - //================================================================== - // Limits - //================================================================== - - case OID_GEN_MAXIMUM_SEND_PACKETS: - l_Query.m_Long = 1; - break; - - case OID_802_3_MAXIMUM_LIST_SIZE: - l_Query.m_Long = NIC_MAX_MCAST_LIST; - break; - - case OID_GEN_CURRENT_LOOKAHEAD: - l_Query.m_Long = l_Adapter->m_Lookahead; - break; - - case OID_GEN_MAXIMUM_LOOKAHEAD: - case OID_GEN_MAXIMUM_TOTAL_SIZE: - case OID_GEN_RECEIVE_BUFFER_SPACE: - case OID_GEN_RECEIVE_BLOCK_SIZE: - l_Query.m_Long = DEFAULT_PACKET_LOOKAHEAD; - break; - - case OID_GEN_MAXIMUM_FRAME_SIZE: - case OID_GEN_TRANSMIT_BLOCK_SIZE: - case OID_GEN_TRANSMIT_BUFFER_SPACE: - l_Query.m_Long = l_Adapter->m_MTU; - break; - - case OID_PNP_CAPABILITIES: - do - { - PNDIS_PNP_CAPABILITIES pPNPCapabilities; - PNDIS_PM_WAKE_UP_CAPABILITIES pPMstruct; - - if (p_BufferLength >= sizeof (NDIS_PNP_CAPABILITIES)) - { - pPNPCapabilities = (PNDIS_PNP_CAPABILITIES) (p_Buffer); - - // - // Setting up the buffer to be returned - // to the Protocol above the Passthru miniport - // - pPMstruct = &pPNPCapabilities->WakeUpCapabilities; - pPMstruct->MinMagicPacketWakeUp = NdisDeviceStateUnspecified; - pPMstruct->MinPatternWakeUp = NdisDeviceStateUnspecified; - pPMstruct->MinLinkChangeWakeUp = NdisDeviceStateUnspecified; - } - l_QueryLength = sizeof (NDIS_PNP_CAPABILITIES); - } - while (FALSE); - break; - case OID_PNP_QUERY_POWER: - break; - - // Required OIDs that we don't support - - case OID_GEN_SUPPORTED_GUIDS: - case OID_GEN_MEDIA_CAPABILITIES: - case OID_TCP_TASK_OFFLOAD: - case OID_FFP_SUPPORT: - l_Status = NDIS_STATUS_INVALID_OID; - break; - - // Optional stats OIDs - - case OID_GEN_DIRECTED_BYTES_XMIT: - case OID_GEN_DIRECTED_FRAMES_XMIT: - case OID_GEN_MULTICAST_BYTES_XMIT: - case OID_GEN_MULTICAST_FRAMES_XMIT: - case OID_GEN_BROADCAST_BYTES_XMIT: - case OID_GEN_BROADCAST_FRAMES_XMIT: - case OID_GEN_DIRECTED_BYTES_RCV: - case OID_GEN_DIRECTED_FRAMES_RCV: - case OID_GEN_MULTICAST_BYTES_RCV: - case OID_GEN_MULTICAST_FRAMES_RCV: - case OID_GEN_BROADCAST_BYTES_RCV: - case OID_GEN_BROADCAST_FRAMES_RCV: - l_Status = NDIS_STATUS_INVALID_OID; - break; - - //=================================================================== - // Not Handled - //=================================================================== - default: - DEBUGP (("[%s] Unhandled OID %lx\n", NAME (l_Adapter), p_OID)); - l_Status = NDIS_STATUS_INVALID_OID; - break; - } - - if (l_Status != NDIS_STATUS_SUCCESS) - ; - else if (l_QueryLength > p_BufferLength) - { - l_Status = NDIS_STATUS_INVALID_LENGTH; - *p_BytesNeeded = l_QueryLength; - } - else - NdisMoveMemory (p_Buffer, (PVOID) l_QueryPtr, - (*p_BytesWritten = l_QueryLength)); - - return l_Status; -} - -NDIS_STATUS AdapterModify -(IN NDIS_HANDLE p_AdapterContext, - IN NDIS_OID p_OID, - IN PVOID p_Buffer, - IN ULONG p_BufferLength, - OUT PULONG p_BytesRead, - OUT PULONG p_BytesNeeded) -{ - TapAdapterQueryPointer l_Query = (TapAdapterQueryPointer) p_Buffer; - TapAdapterPointer l_Adapter = (TapAdapterPointer) p_AdapterContext; - NDIS_STATUS l_Status = NDIS_STATUS_INVALID_OID; - ULONG l_Long; - - switch (p_OID) - { - //================================================================== - // Device Info - //================================================================== - case OID_802_3_MULTICAST_LIST: - DEBUGP (("[%s] Setting [OID_802_3_MULTICAST_LIST]\n", - NAME (l_Adapter))); - - *p_BytesNeeded = sizeof (ETH_ADDR); - *p_BytesRead = p_BufferLength; - - if (p_BufferLength % sizeof (ETH_ADDR)) - l_Status = NDIS_STATUS_INVALID_LENGTH; - else if (p_BufferLength > sizeof (MC_LIST)) - { - l_Status = NDIS_STATUS_MULTICAST_FULL; - *p_BytesNeeded = sizeof (MC_LIST); - } - else - { - NdisAcquireSpinLock (&l_Adapter->m_MCLock); - - NdisZeroMemory(&l_Adapter->m_MCList, sizeof (MC_LIST)); - - NdisMoveMemory(&l_Adapter->m_MCList, - p_Buffer, - p_BufferLength); - - l_Adapter->m_MCListSize = p_BufferLength / sizeof (ETH_ADDR); - - NdisReleaseSpinLock (&l_Adapter->m_MCLock); - - l_Status = NDIS_STATUS_SUCCESS; - } - break; - - case OID_GEN_CURRENT_PACKET_FILTER: - l_Status = NDIS_STATUS_INVALID_LENGTH; - *p_BytesNeeded = 4; - - if (p_BufferLength >= sizeof (ULONG)) - { - DEBUGP - (("[%s] Setting [OID_GEN_CURRENT_PACKET_FILTER] to [0x%02lx]\n", - NAME (l_Adapter), l_Query->m_Long)); - l_Status = NDIS_STATUS_SUCCESS; - *p_BytesRead = sizeof (ULONG); - } - break; - - case OID_GEN_CURRENT_LOOKAHEAD: - if (p_BufferLength < sizeof (ULONG)) - { - l_Status = NDIS_STATUS_INVALID_LENGTH; - *p_BytesNeeded = 4; - } - else if (l_Query->m_Long > DEFAULT_PACKET_LOOKAHEAD - || l_Query->m_Long <= 0) - { - l_Status = NDIS_STATUS_INVALID_DATA; - } - else - { - DEBUGP (("[%s] Setting [OID_GEN_CURRENT_LOOKAHEAD] to [%d]\n", - NAME (l_Adapter), l_Query->m_Long)); - l_Adapter->m_Lookahead = l_Query->m_Long; - l_Status = NDIS_STATUS_SUCCESS; - *p_BytesRead = sizeof (ULONG); - } - break; - - case OID_GEN_NETWORK_LAYER_ADDRESSES: - l_Status = NDIS_STATUS_SUCCESS; - *p_BytesRead = *p_BytesNeeded = 0; - break; - - case OID_GEN_TRANSPORT_HEADER_OFFSET: - l_Status = NDIS_STATUS_SUCCESS; - *p_BytesRead = *p_BytesNeeded = 0; - break; - - case OID_PNP_SET_POWER: - do - { - NDIS_DEVICE_POWER_STATE NewDeviceState; - - NewDeviceState = (*(PNDIS_DEVICE_POWER_STATE) p_Buffer); - - switch (NewDeviceState) - { - case NdisDeviceStateD0: - l_Adapter->m_DeviceState = '0'; - break; - case NdisDeviceStateD1: - l_Adapter->m_DeviceState = '1'; - break; - case NdisDeviceStateD2: - l_Adapter->m_DeviceState = '2'; - break; - case NdisDeviceStateD3: - l_Adapter->m_DeviceState = '3'; - break; - default: - l_Adapter->m_DeviceState = '?'; - break; - } - - l_Status = NDIS_STATUS_FAILURE; - - // - // Check for invalid length - // - if (p_BufferLength < sizeof (NDIS_DEVICE_POWER_STATE)) - { - l_Status = NDIS_STATUS_INVALID_LENGTH; - break; - } - - if (NewDeviceState > NdisDeviceStateD0) - { - l_Adapter->m_InterfaceIsRunning = FALSE; - DEBUGP (("[%s] Power management device state OFF\n", - NAME (l_Adapter))); - } - else - { - l_Adapter->m_InterfaceIsRunning = TRUE; - DEBUGP (("[%s] Power management device state ON\n", - NAME (l_Adapter))); - } - - l_Status = NDIS_STATUS_SUCCESS; - } - while (FALSE); - - if (l_Status == NDIS_STATUS_SUCCESS) - { - *p_BytesRead = sizeof (NDIS_DEVICE_POWER_STATE); - *p_BytesNeeded = 0; - } - else - { - *p_BytesRead = 0; - *p_BytesNeeded = sizeof (NDIS_DEVICE_POWER_STATE); - } - break; - - case OID_PNP_REMOVE_WAKE_UP_PATTERN: - case OID_PNP_ADD_WAKE_UP_PATTERN: - l_Status = NDIS_STATUS_SUCCESS; - *p_BytesRead = *p_BytesNeeded = 0; - break; - - default: - DEBUGP (("[%s] Can't set value for OID %lx\n", NAME (l_Adapter), - p_OID)); - l_Status = NDIS_STATUS_INVALID_OID; - *p_BytesRead = *p_BytesNeeded = 0; - break; - } - - return l_Status; -} - -// checksum code for ICMPv6 packet, taken from dhcp.c / udp_checksum -// see RFC 4443, 2.3, and RFC 2460, 8.1 -USHORT -icmpv6_checksum (const UCHAR *buf, - const int len_icmpv6, - const UCHAR *saddr6, - const UCHAR *daddr6) -{ - USHORT word16; - ULONG sum = 0; - int i; - - // make 16 bit words out of every two adjacent 8 bit words and - // calculate the sum of all 16 bit words - for (i = 0; i < len_icmpv6; i += 2){ - word16 = ((buf[i] << 8) & 0xFF00) + ((i + 1 < len_icmpv6) ? (buf[i+1] & 0xFF) : 0); - sum += word16; - } - - // add the IPv6 pseudo header which contains the IP source and destination addresses - for (i = 0; i < 16; i += 2){ - word16 =((saddr6[i] << 8) & 0xFF00) + (saddr6[i+1] & 0xFF); - sum += word16; - } - for (i = 0; i < 16; i += 2){ - word16 =((daddr6[i] << 8) & 0xFF00) + (daddr6[i+1] & 0xFF); - sum += word16; - } - - // the next-header number and the length of the ICMPv6 packet - sum += (USHORT) IPPROTO_ICMPV6 + (USHORT) len_icmpv6; - - // keep only the last 16 bits of the 32 bit calculated sum and add the carries - while (sum >> 16) - sum = (sum & 0xFFFF) + (sum >> 16); - - // Take the one's complement of sum - return ((USHORT) ~sum); -} - -// check IPv6 packet for "is this an IPv6 Neighbor Solicitation that -// the tap driver needs to answer?" -// see RFC 4861 4.3 for the different cases -static IPV6ADDR IPV6_NS_TARGET_MCAST = - { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x01, 0xff, 0x00, 0x00, 0x08 }; -static IPV6ADDR IPV6_NS_TARGET_UNICAST = - { 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08 }; - -BOOLEAN -HandleIPv6NeighborDiscovery( TapAdapterPointer p_Adapter, UCHAR * m_Data ) -{ - const ETH_HEADER * e = (ETH_HEADER *) m_Data; - const IPV6HDR *ipv6 = (IPV6HDR *) (m_Data + sizeof (ETH_HEADER)); - const ICMPV6_NS * icmpv6_ns = (ICMPV6_NS *) (m_Data + sizeof (ETH_HEADER) + sizeof (IPV6HDR)); - ICMPV6_NA_PKT *na; - USHORT icmpv6_len, icmpv6_csum; - - // we don't really care about the destination MAC address here - // - it's either a multicast MAC, or the userland destination MAC - // but since the TAP driver is point-to-point, all packets are "for us" - - // IPv6 target address must be ff02::1::ff00:8 (multicast for - // initial NS) or fe80::1 (unicast for recurrent NUD) - if ( memcmp( ipv6->daddr, IPV6_NS_TARGET_MCAST, - sizeof(IPV6ADDR) ) != 0 && - memcmp( ipv6->daddr, IPV6_NS_TARGET_UNICAST, - sizeof(IPV6ADDR) ) != 0 ) - { - return FALSE; // wrong target address - } - - // IPv6 Next-Header must be ICMPv6 - if ( ipv6->nexthdr != IPPROTO_ICMPV6 ) - { - return FALSE; // wrong next-header - } - - // ICMPv6 type+code must be 135/0 for NS - if ( icmpv6_ns->type != ICMPV6_TYPE_NS || - icmpv6_ns->code != ICMPV6_CODE_0 ) - { - return FALSE; // wrong ICMPv6 type - } - - // ICMPv6 target address must be fe80::8 (magic) - if ( memcmp( icmpv6_ns->target_addr, IPV6_NS_TARGET_UNICAST, - sizeof(IPV6ADDR) ) != 0 ) - { - return FALSE; // not for us - } - - // packet identified, build magic response packet - - na = (ICMPV6_NA_PKT *) MemAlloc (sizeof (ICMPV6_NA_PKT), TRUE); - if ( !na ) return FALSE; - - //------------------------------------------------ - // Initialize Neighbour Advertisement reply packet - //------------------------------------------------ - - // ethernet header - na->eth.proto = htons(ETH_P_IPV6); - COPY_MAC(na->eth.dest, p_Adapter->m_MAC); - COPY_MAC(na->eth.src, p_Adapter->m_TapToUser.dest); - - // IPv6 header - na->ipv6.version_prio = ipv6->version_prio; - NdisMoveMemory( na->ipv6.flow_lbl, ipv6->flow_lbl, - sizeof(na->ipv6.flow_lbl) ); - icmpv6_len = sizeof(ICMPV6_NA_PKT) - sizeof(ETH_HEADER) - sizeof(IPV6HDR); - na->ipv6.payload_len = htons(icmpv6_len); - na->ipv6.nexthdr = IPPROTO_ICMPV6; - na->ipv6.hop_limit = 255; - NdisMoveMemory( na->ipv6.saddr, IPV6_NS_TARGET_UNICAST, - sizeof(IPV6ADDR) ); - NdisMoveMemory( na->ipv6.daddr, ipv6->saddr, - sizeof(IPV6ADDR) ); - - // ICMPv6 - na->icmpv6.type = ICMPV6_TYPE_NA; - na->icmpv6.code = ICMPV6_CODE_0; - na->icmpv6.checksum = 0; - na->icmpv6.rso_bits = 0x60; // Solicited + Override - NdisZeroMemory( na->icmpv6.reserved, sizeof(na->icmpv6.reserved) ); - NdisMoveMemory( na->icmpv6.target_addr, IPV6_NS_TARGET_UNICAST, - sizeof(IPV6ADDR) ); - - // ICMPv6 option "Target Link Layer Address" - na->icmpv6.opt_type = ICMPV6_OPTION_TLLA; - na->icmpv6.opt_length = ICMPV6_LENGTH_TLLA; - COPY_MAC( na->icmpv6.target_macaddr, p_Adapter->m_TapToUser.dest ); - - // calculate and set checksum - icmpv6_csum = icmpv6_checksum ( (UCHAR*) &(na->icmpv6), - icmpv6_len, - na->ipv6.saddr, - na->ipv6.daddr ); - na->icmpv6.checksum = htons( icmpv6_csum ); - - DUMP_PACKET ("HandleIPv6NeighborDiscovery", - (unsigned char *) na, - sizeof (ICMPV6_NA_PKT)); - - InjectPacketDeferred (p_Adapter, (UCHAR *) na, sizeof (ICMPV6_NA_PKT)); - - MemFree (na, sizeof (ICMPV6_NA_PKT)); - - return TRUE; // all fine -} - -//==================================================================== -// Adapter Transmission -//==================================================================== -NDIS_STATUS -AdapterTransmit (IN NDIS_HANDLE p_AdapterContext, - IN PNDIS_PACKET p_Packet, - IN UINT p_Flags) -{ - TapAdapterPointer l_Adapter = (TapAdapterPointer) p_AdapterContext; - ULONG l_Index = 0, l_PacketLength = 0; - UINT l_BufferLength = 0; - PIRP l_IRP; - TapPacketPointer l_PacketBuffer; - PNDIS_BUFFER l_NDIS_Buffer; - PUCHAR l_Buffer; - PVOID result; - - NdisQueryPacket (p_Packet, NULL, NULL, &l_NDIS_Buffer, &l_PacketLength); - - //==================================================== - // Here we abandon the transmission attempt if any of - // the parameters is wrong or memory allocation fails - // but we do not indicate failure. The packet is - // silently dropped. - //==================================================== - - if (l_PacketLength < ETHERNET_HEADER_SIZE || l_PacketLength > 65535) - goto exit_fail; - else if (!l_Adapter->m_Extension.m_TapOpens || !l_Adapter->m_MediaState) - goto exit_success; // Nothing is bound to the TAP device - - if (NdisAllocateMemoryWithTag (&l_PacketBuffer, - TAP_PACKET_SIZE (l_PacketLength), - '5PAT') != NDIS_STATUS_SUCCESS) - goto exit_no_resources; - - if (l_PacketBuffer == NULL) - goto exit_no_resources; - - l_PacketBuffer->m_SizeFlags = (l_PacketLength & TP_SIZE_MASK); - - //=========================== - // Reassemble packet contents - //=========================== - - __try - { - l_Index = 0; - while (l_NDIS_Buffer && l_Index < l_PacketLength) - { - ULONG newlen; - NdisQueryBuffer (l_NDIS_Buffer, (PVOID *) & l_Buffer, - &l_BufferLength); - newlen = l_Index + l_BufferLength; - if (newlen > l_PacketLength) - { - NOTE_ERROR (); - goto no_queue; /* overflow */ - } - NdisMoveMemory (l_PacketBuffer->m_Data + l_Index, l_Buffer, - l_BufferLength); - l_Index = newlen; - NdisGetNextBuffer (l_NDIS_Buffer, &l_NDIS_Buffer); - } - if (l_Index != l_PacketLength) - { - NOTE_ERROR (); - goto no_queue; /* underflow */ - } - - DUMP_PACKET ("AdapterTransmit", l_PacketBuffer->m_Data, l_PacketLength); - - //===================================================== - // If IPv4 packet, check whether or not packet - // was truncated. - //===================================================== -#if PACKET_TRUNCATION_CHECK - IPv4PacketSizeVerify (l_PacketBuffer->m_Data, l_PacketLength, FALSE, "TX", &l_Adapter->m_TxTrunc); -#endif - - //===================================================== - // Are we running in DHCP server masquerade mode? - // - // If so, catch both DHCP requests and ARP queries - // to resolve the address of our virtual DHCP server. - //===================================================== - if (l_Adapter->m_dhcp_enabled) - { - const ETH_HEADER *eth = (ETH_HEADER *) l_PacketBuffer->m_Data; - const IPHDR *ip = (IPHDR *) (l_PacketBuffer->m_Data + sizeof (ETH_HEADER)); - const UDPHDR *udp = (UDPHDR *) (l_PacketBuffer->m_Data + sizeof (ETH_HEADER) + sizeof (IPHDR)); - - // ARP packet? - if (l_PacketLength == sizeof (ARP_PACKET) - && eth->proto == htons (ETH_P_ARP) - && l_Adapter->m_dhcp_server_arp) - { - if (ProcessARP (l_Adapter, - (PARP_PACKET) l_PacketBuffer->m_Data, - l_Adapter->m_dhcp_addr, - l_Adapter->m_dhcp_server_ip, - ~0, - l_Adapter->m_dhcp_server_mac)) - goto no_queue; - } - - // DHCP packet? - else if (l_PacketLength >= sizeof (ETH_HEADER) + sizeof (IPHDR) + sizeof (UDPHDR) + sizeof (DHCP) - && eth->proto == htons (ETH_P_IP) - && ip->version_len == 0x45 // IPv4, 20 byte header - && ip->protocol == IPPROTO_UDP - && udp->dest == htons (BOOTPS_PORT)) - { - const DHCP *dhcp = (DHCP *) (l_PacketBuffer->m_Data - + sizeof (ETH_HEADER) - + sizeof (IPHDR) - + sizeof (UDPHDR)); - - const int optlen = l_PacketLength - - sizeof (ETH_HEADER) - - sizeof (IPHDR) - - sizeof (UDPHDR) - - sizeof (DHCP); - - if (optlen > 0) // we must have at least one DHCP option - { - if (ProcessDHCP (l_Adapter, eth, ip, udp, dhcp, optlen)) - goto no_queue; - } - else - goto no_queue; - } - } - - //=============================================== - // In Point-To-Point mode, check to see whether - // packet is ARP (handled) or IPv4 (sent to app). - // IPv6 packets are inspected for neighbour discovery - // (to be handled locally), and the rest is forwarded - // all other protocols are dropped - //=============================================== - if (l_Adapter->m_tun) - { - ETH_HEADER *e; - - if (l_PacketLength < ETHERNET_HEADER_SIZE) - goto no_queue; - - e = (ETH_HEADER *) l_PacketBuffer->m_Data; - - switch (ntohs (e->proto)) - { - case ETH_P_ARP: - - // Make sure that packet is the - // right size for ARP. - if (l_PacketLength != sizeof (ARP_PACKET)) - goto no_queue; - - ProcessARP (l_Adapter, - (PARP_PACKET) l_PacketBuffer->m_Data, - l_Adapter->m_localIP, - l_Adapter->m_remoteNetwork, - l_Adapter->m_remoteNetmask, - l_Adapter->m_TapToUser.dest); - - default: - goto no_queue; - - case ETH_P_IP: - - // Make sure that packet is large - // enough to be IPv4. - if (l_PacketLength - < ETHERNET_HEADER_SIZE + IP_HEADER_SIZE) - goto no_queue; - - // Only accept directed packets, - // not broadcasts. - if (memcmp (e, &l_Adapter->m_TapToUser, ETHERNET_HEADER_SIZE)) - goto no_queue; - - // Packet looks like IPv4, queue it. - l_PacketBuffer->m_SizeFlags |= TP_TUN; - - case ETH_P_IPV6: - // make sure that packet is large - // enough to be IPv6 - if (l_PacketLength - < ETHERNET_HEADER_SIZE + IPV6_HEADER_SIZE) - goto no_queue; - - // broadcasts and multicasts are handled specially - // (to be implemented) - - // neighbor discovery packets to fe80::8 are special - // OpenVPN sets this next-hop to signal "handled by tapdrv" - if ( HandleIPv6NeighborDiscovery( l_Adapter, - l_PacketBuffer->m_Data )) - { - goto no_queue; - } - - // Packet looks like IPv6, queue it :-) - l_PacketBuffer->m_SizeFlags |= TP_TUN; - } - } - - //=============================================== - // Push packet onto queue to wait for read from - // userspace. - //=============================================== - - NdisAcquireSpinLock (&l_Adapter->m_Extension.m_QueueLock); - - result = NULL; - if (IS_UP (l_Adapter)) - result = QueuePush (l_Adapter->m_Extension.m_PacketQueue, l_PacketBuffer); - - NdisReleaseSpinLock (&l_Adapter->m_Extension.m_QueueLock); - - if ((TapPacketPointer) result != l_PacketBuffer) - { - // adapter receive overrun - INCREMENT_STAT (l_Adapter->m_TxErr); - goto no_queue; - } - else - { - INCREMENT_STAT (l_Adapter->m_Tx); - } - - //============================================================ - // Cycle through IRPs and packets, try to satisfy each pending - // IRP with a queued packet. - //============================================================ - while (TRUE) - { - l_IRP = NULL; - l_PacketBuffer = NULL; - - NdisAcquireSpinLock (&l_Adapter->m_Extension.m_QueueLock); - - if (IS_UP (l_Adapter) - && QueueCount (l_Adapter->m_Extension.m_PacketQueue) - && QueueCount (l_Adapter->m_Extension.m_IrpQueue)) - { - l_IRP = (PIRP) QueuePop (l_Adapter->m_Extension.m_IrpQueue); - l_PacketBuffer = (TapPacketPointer) - QueuePop (l_Adapter->m_Extension.m_PacketQueue); - } - - NdisReleaseSpinLock (&l_Adapter->m_Extension.m_QueueLock); - - MYASSERT ((l_IRP != NULL) + (l_PacketBuffer != NULL) != 1); - - if (l_IRP && l_PacketBuffer) - { - CompleteIRP (l_IRP, - l_PacketBuffer, - IO_NETWORK_INCREMENT); - } - else - break; - } - } - __except (EXCEPTION_EXECUTE_HANDLER) - { - } - - return NDIS_STATUS_SUCCESS; - - no_queue: - NdisFreeMemory (l_PacketBuffer, - TAP_PACKET_SIZE (l_PacketLength), - 0); - - exit_success: - return NDIS_STATUS_SUCCESS; - - exit_fail: - return NDIS_STATUS_FAILURE; - - exit_no_resources: - return NDIS_STATUS_RESOURCES; -} - -//====================================================================== -// Hooks for catching TAP device IRP's. -//====================================================================== - -NTSTATUS -TapDeviceHook (IN PDEVICE_OBJECT p_DeviceObject, IN PIRP p_IRP) -{ - TapAdapterPointer l_Adapter = LookupAdapterInInstanceList (p_DeviceObject); - PIO_STACK_LOCATION l_IrpSp; - NTSTATUS l_Status = STATUS_SUCCESS; - BOOLEAN accessible; - - l_IrpSp = IoGetCurrentIrpStackLocation (p_IRP); - - p_IRP->IoStatus.Status = STATUS_SUCCESS; - p_IRP->IoStatus.Information = 0; - - if (!l_Adapter || l_Adapter->m_Extension.m_Halt) - { - DEBUGP (("TapDeviceHook called when TAP device is halted, MajorFunction=%d\n", - (int)l_IrpSp->MajorFunction)); - - if (l_IrpSp->MajorFunction == IRP_MJ_CLOSE) - { - IoCompleteRequest (p_IRP, IO_NO_INCREMENT); - return STATUS_SUCCESS; - } - else - { - p_IRP->IoStatus.Status = STATUS_NO_SUCH_DEVICE; - IoCompleteRequest (p_IRP, IO_NO_INCREMENT); - return STATUS_NO_SUCH_DEVICE; - } - } - - switch (l_IrpSp->MajorFunction) - { - //=========================================================== - // Ioctl call handlers - //=========================================================== - case IRP_MJ_DEVICE_CONTROL: - { - switch (l_IrpSp->Parameters.DeviceIoControl.IoControlCode) - { - case TAP_IOCTL_GET_MAC: - { - if (l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength - >= sizeof (MACADDR)) - { - COPY_MAC (p_IRP->AssociatedIrp.SystemBuffer, - l_Adapter->m_MAC); - p_IRP->IoStatus.Information = sizeof (MACADDR); - } - else - { - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_BUFFER_TOO_SMALL; - } - break; - } - case TAP_IOCTL_GET_VERSION: - { - const ULONG size = sizeof (ULONG) * 3; - if (l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength - >= size) - { - ((PULONG) (p_IRP->AssociatedIrp.SystemBuffer))[0] - = TAP_DRIVER_MAJOR_VERSION; - ((PULONG) (p_IRP->AssociatedIrp.SystemBuffer))[1] - = TAP_DRIVER_MINOR_VERSION; - ((PULONG) (p_IRP->AssociatedIrp.SystemBuffer))[2] -#if DBG - = 1; -#else - = 0; -#endif - p_IRP->IoStatus.Information = size; - } - else - { - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_BUFFER_TOO_SMALL; - } - - break; - } - case TAP_IOCTL_GET_MTU: - { - const ULONG size = sizeof (ULONG) * 1; - if (l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength - >= size) - { - ((PULONG) (p_IRP->AssociatedIrp.SystemBuffer))[0] - = l_Adapter->m_MTU; - p_IRP->IoStatus.Information = size; - } - else - { - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_BUFFER_TOO_SMALL; - } - - break; - } - case TAP_IOCTL_GET_INFO: - { - char state[16]; - if (l_Adapter->m_InterfaceIsRunning) - state[0] = 'A'; - else - state[0] = 'a'; - if (l_Adapter->m_Extension.m_TapIsRunning) - state[1] = 'T'; - else - state[1] = 't'; - state[2] = l_Adapter->m_DeviceState; - if (l_Adapter->m_MediaStateAlwaysConnected) - state[3] = 'C'; - else - state[3] = 'c'; - state[4] = '\0'; - - p_IRP->IoStatus.Status = l_Status = RtlStringCchPrintfExA ( - ((LPTSTR) (p_IRP->AssociatedIrp.SystemBuffer)), - l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength, - NULL, - NULL, - STRSAFE_FILL_BEHIND_NULL | STRSAFE_IGNORE_NULLS, -#if PACKET_TRUNCATION_CHECK - "State=%s Err=[%s/%d] #O=%d Tx=[%d,%d,%d] Rx=[%d,%d,%d] IrpQ=[%d,%d,%d] PktQ=[%d,%d,%d] InjQ=[%d,%d,%d]", -#else - "State=%s Err=[%s/%d] #O=%d Tx=[%d,%d] Rx=[%d,%d] IrpQ=[%d,%d,%d] PktQ=[%d,%d,%d] InjQ=[%d,%d,%d]", -#endif - state, - g_LastErrorFilename, - g_LastErrorLineNumber, - (int)l_Adapter->m_Extension.m_NumTapOpens, - (int)l_Adapter->m_Tx, - (int)l_Adapter->m_TxErr, -#if PACKET_TRUNCATION_CHECK - (int)l_Adapter->m_TxTrunc, -#endif - (int)l_Adapter->m_Rx, - (int)l_Adapter->m_RxErr, -#if PACKET_TRUNCATION_CHECK - (int)l_Adapter->m_RxTrunc, -#endif - (int)l_Adapter->m_Extension.m_IrpQueue->size, - (int)l_Adapter->m_Extension.m_IrpQueue->max_size, - (int)IRP_QUEUE_SIZE, - (int)l_Adapter->m_Extension.m_PacketQueue->size, - (int)l_Adapter->m_Extension.m_PacketQueue->max_size, - (int)PACKET_QUEUE_SIZE, - (int)l_Adapter->m_Extension.m_InjectQueue->size, - (int)l_Adapter->m_Extension.m_InjectQueue->max_size, - (int)INJECT_QUEUE_SIZE - ); - - p_IRP->IoStatus.Information - = l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength; - - break; - } - -#if DBG - case TAP_IOCTL_GET_LOG_LINE: - { - if (GetDebugLine ((LPTSTR)p_IRP->AssociatedIrp.SystemBuffer, - l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength)) - p_IRP->IoStatus.Status = l_Status = STATUS_SUCCESS; - else - p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL; - - p_IRP->IoStatus.Information - = l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength; - - break; - } -#endif - - case TAP_IOCTL_CONFIG_TUN: - { - if (l_IrpSp->Parameters.DeviceIoControl.InputBufferLength >= - (sizeof (IPADDR) * 3)) - { - MACADDR dest; - - l_Adapter->m_tun = FALSE; - - GenerateRelatedMAC (dest, l_Adapter->m_MAC, 1); - - l_Adapter->m_localIP = ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[0]; - l_Adapter->m_remoteNetwork = ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[1]; - l_Adapter->m_remoteNetmask = ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[2]; - - // sanity check on network/netmask - if ((l_Adapter->m_remoteNetwork & l_Adapter->m_remoteNetmask) != l_Adapter->m_remoteNetwork) - { - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER; - break; - } - - COPY_MAC (l_Adapter->m_TapToUser.src, l_Adapter->m_MAC); - COPY_MAC (l_Adapter->m_TapToUser.dest, dest); - COPY_MAC (l_Adapter->m_UserToTap.src, dest); - COPY_MAC (l_Adapter->m_UserToTap.dest, l_Adapter->m_MAC); - - l_Adapter->m_TapToUser.proto = l_Adapter->m_UserToTap.proto = htons (ETH_P_IP); - l_Adapter->m_UserToTap_IPv6 = l_Adapter->m_UserToTap; - l_Adapter->m_UserToTap_IPv6.proto = htons(ETH_P_IPV6); - - l_Adapter->m_tun = TRUE; - - CheckIfDhcpAndTunMode (l_Adapter); - - p_IRP->IoStatus.Information = 1; // Simple boolean value - } - else - { - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER; - } - - break; - } - - case TAP_IOCTL_CONFIG_POINT_TO_POINT: // Obsoleted by TAP_IOCTL_CONFIG_TUN - { - if (l_IrpSp->Parameters.DeviceIoControl.InputBufferLength >= - (sizeof (IPADDR) * 2)) - { - MACADDR dest; - - l_Adapter->m_tun = FALSE; - - GenerateRelatedMAC (dest, l_Adapter->m_MAC, 1); - - l_Adapter->m_localIP = ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[0]; - l_Adapter->m_remoteNetwork = ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[1]; - l_Adapter->m_remoteNetmask = ~0; - - COPY_MAC (l_Adapter->m_TapToUser.src, l_Adapter->m_MAC); - COPY_MAC (l_Adapter->m_TapToUser.dest, dest); - COPY_MAC (l_Adapter->m_UserToTap.src, dest); - COPY_MAC (l_Adapter->m_UserToTap.dest, l_Adapter->m_MAC); - - l_Adapter->m_TapToUser.proto = l_Adapter->m_UserToTap.proto = htons (ETH_P_IP); - l_Adapter->m_UserToTap_IPv6 = l_Adapter->m_UserToTap; - l_Adapter->m_UserToTap_IPv6.proto = htons(ETH_P_IPV6); - - l_Adapter->m_tun = TRUE; - - CheckIfDhcpAndTunMode (l_Adapter); - - p_IRP->IoStatus.Information = 1; // Simple boolean value - } - else - { - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER; - } - - break; - } - - case TAP_IOCTL_SET_MEDIA_STATUS: - { - if (l_IrpSp->Parameters.DeviceIoControl.InputBufferLength >= - (sizeof (ULONG) * 1)) - { - ULONG parm = ((PULONG) (p_IRP->AssociatedIrp.SystemBuffer))[0]; - SetMediaStatus (l_Adapter, (BOOLEAN) parm); - p_IRP->IoStatus.Information = 1; - } - else - { - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER; - } - break; - } - - case TAP_IOCTL_CONFIG_DHCP_MASQ: - { - if (l_IrpSp->Parameters.DeviceIoControl.InputBufferLength >= - (sizeof (IPADDR) * 4)) - { - l_Adapter->m_dhcp_enabled = FALSE; - l_Adapter->m_dhcp_server_arp = FALSE; - l_Adapter->m_dhcp_user_supplied_options_buffer_len = 0; - - // Adapter IP addr / netmask - l_Adapter->m_dhcp_addr = - ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[0]; - l_Adapter->m_dhcp_netmask = - ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[1]; - - // IP addr of DHCP masq server - l_Adapter->m_dhcp_server_ip = - ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[2]; - - // Lease time in seconds - l_Adapter->m_dhcp_lease_time = - ((IPADDR*) (p_IRP->AssociatedIrp.SystemBuffer))[3]; - - GenerateRelatedMAC (l_Adapter->m_dhcp_server_mac, l_Adapter->m_MAC, 2); - - l_Adapter->m_dhcp_enabled = TRUE; - l_Adapter->m_dhcp_server_arp = TRUE; - - CheckIfDhcpAndTunMode (l_Adapter); - - p_IRP->IoStatus.Information = 1; // Simple boolean value - } - else - { - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER; - } - - break; - } - - case TAP_IOCTL_CONFIG_DHCP_SET_OPT: - { - if (l_IrpSp->Parameters.DeviceIoControl.InputBufferLength <= - DHCP_USER_SUPPLIED_OPTIONS_BUFFER_SIZE - && l_Adapter->m_dhcp_enabled) - { - l_Adapter->m_dhcp_user_supplied_options_buffer_len = 0; - - NdisMoveMemory (l_Adapter->m_dhcp_user_supplied_options_buffer, - p_IRP->AssociatedIrp.SystemBuffer, - l_IrpSp->Parameters.DeviceIoControl.InputBufferLength); - - l_Adapter->m_dhcp_user_supplied_options_buffer_len = - l_IrpSp->Parameters.DeviceIoControl.InputBufferLength; - - p_IRP->IoStatus.Information = 1; // Simple boolean value - } - else - { - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER; - } - - break; - } - - default: - { - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER; - break; - } - } - - IoCompleteRequest (p_IRP, IO_NO_INCREMENT); - break; - } - - //=========================================================== - // User mode thread issued a read request on the tap device - // If there are packets waiting to be read, then the request - // will be satisfied here. If not, then the request will be - // queued and satisfied by any packet that is not used to - // satisfy requests ahead of it. - //=========================================================== - case IRP_MJ_READ: - { - TapPacketPointer l_PacketBuffer; - BOOLEAN pending = FALSE; - - // Save IRP-accessible copy of buffer length - p_IRP->IoStatus.Information = l_IrpSp->Parameters.Read.Length; - - if (p_IRP->MdlAddress == NULL) - { - DEBUGP (("[%s] MdlAddress is NULL for IRP_MJ_READ\n", - NAME (l_Adapter))); - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER; - p_IRP->IoStatus.Information = 0; - IoCompleteRequest (p_IRP, IO_NO_INCREMENT); - break; - } - else if ((p_IRP->AssociatedIrp.SystemBuffer = - MmGetSystemAddressForMdlSafe - (p_IRP->MdlAddress, NormalPagePriority)) == NULL) - { - DEBUGP (("[%s] Could not map address in IRP_MJ_READ\n", - NAME (l_Adapter))); - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_INSUFFICIENT_RESOURCES; - p_IRP->IoStatus.Information = 0; - IoCompleteRequest (p_IRP, IO_NO_INCREMENT); - break; - } - else if (!l_Adapter->m_InterfaceIsRunning) - { - DEBUGP (("[%s] Interface is down in IRP_MJ_READ\n", - NAME (l_Adapter))); - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL; - p_IRP->IoStatus.Information = 0; - IoCompleteRequest (p_IRP, IO_NO_INCREMENT); - break; - } - - //================================== - // Can we provide immediate service? - //================================== - - l_PacketBuffer = NULL; - - NdisAcquireSpinLock (&l_Adapter->m_Extension.m_QueueLock); - - if (IS_UP (l_Adapter) - && QueueCount (l_Adapter->m_Extension.m_PacketQueue) - && QueueCount (l_Adapter->m_Extension.m_IrpQueue) == 0) - { - l_PacketBuffer = (TapPacketPointer) - QueuePop (l_Adapter->m_Extension.m_PacketQueue); - } - - NdisReleaseSpinLock (&l_Adapter->m_Extension.m_QueueLock); - - if (l_PacketBuffer) - { - l_Status = CompleteIRP (p_IRP, - l_PacketBuffer, - IO_NO_INCREMENT); - break; - } - - //============================= - // Attempt to pend read request - //============================= - - NdisAcquireSpinLock (&l_Adapter->m_Extension.m_QueueLock); - - if (IS_UP (l_Adapter) - && QueuePush (l_Adapter->m_Extension.m_IrpQueue, p_IRP) == (PIRP) p_IRP) - { - IoSetCancelRoutine (p_IRP, CancelIRPCallback); - l_Status = STATUS_PENDING; - IoMarkIrpPending (p_IRP); - pending = TRUE; - } - - NdisReleaseSpinLock (&l_Adapter->m_Extension.m_QueueLock); - - if (pending) - break; - - // Can't queue anymore IRP's - DEBUGP (("[%s] TAP [%s] read IRP overrun\n", - NAME (l_Adapter), l_Adapter->m_Extension.m_TapName)); - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL; - p_IRP->IoStatus.Information = 0; - IoCompleteRequest (p_IRP, IO_NO_INCREMENT); - break; - } - - //============================================================== - // User mode issued a WriteFile request on the TAP file handle. - // The request will always get satisfied here. The call may - // fail if there are too many pending packets (queue full). - //============================================================== - case IRP_MJ_WRITE: - { - if (p_IRP->MdlAddress == NULL) - { - DEBUGP (("[%s] MdlAddress is NULL for IRP_MJ_WRITE\n", - NAME (l_Adapter))); - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER; - p_IRP->IoStatus.Information = 0; - } - else if ((p_IRP->AssociatedIrp.SystemBuffer = - MmGetSystemAddressForMdlSafe - (p_IRP->MdlAddress, NormalPagePriority)) == NULL) - { - DEBUGP (("[%s] Could not map address in IRP_MJ_WRITE\n", - NAME (l_Adapter))); - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_INSUFFICIENT_RESOURCES; - p_IRP->IoStatus.Information = 0; - } - else if (!l_Adapter->m_InterfaceIsRunning) - { - DEBUGP (("[%s] Interface is down in IRP_MJ_WRITE\n", - NAME (l_Adapter))); - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL; - p_IRP->IoStatus.Information = 0; - } - else if (!l_Adapter->m_tun && ((l_IrpSp->Parameters.Write.Length) >= ETHERNET_HEADER_SIZE)) - { - __try - { - p_IRP->IoStatus.Information = l_IrpSp->Parameters.Write.Length; - - DUMP_PACKET ("IRP_MJ_WRITE ETH", - (unsigned char *) p_IRP->AssociatedIrp.SystemBuffer, - l_IrpSp->Parameters.Write.Length); - - //===================================================== - // If IPv4 packet, check whether or not packet - // was truncated. - //===================================================== -#if PACKET_TRUNCATION_CHECK - IPv4PacketSizeVerify ((unsigned char *) p_IRP->AssociatedIrp.SystemBuffer, - l_IrpSp->Parameters.Write.Length, - FALSE, - "RX", - &l_Adapter->m_RxTrunc); -#endif - - NdisMEthIndicateReceive - (l_Adapter->m_MiniportAdapterHandle, - (NDIS_HANDLE) l_Adapter, - (unsigned char *) p_IRP->AssociatedIrp.SystemBuffer, - ETHERNET_HEADER_SIZE, - (unsigned char *) p_IRP->AssociatedIrp.SystemBuffer + ETHERNET_HEADER_SIZE, - l_IrpSp->Parameters.Write.Length - ETHERNET_HEADER_SIZE, - l_IrpSp->Parameters.Write.Length - ETHERNET_HEADER_SIZE); - - NdisMEthIndicateReceiveComplete (l_Adapter->m_MiniportAdapterHandle); - - p_IRP->IoStatus.Status = l_Status = STATUS_SUCCESS; - } - __except (EXCEPTION_EXECUTE_HANDLER) - { - DEBUGP (("[%s] NdisMEthIndicateReceive failed in IRP_MJ_WRITE\n", - NAME (l_Adapter))); - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL; - p_IRP->IoStatus.Information = 0; - } - } - else if (l_Adapter->m_tun && ((l_IrpSp->Parameters.Write.Length) >= IP_HEADER_SIZE)) - { - __try - { - ETH_HEADER * p_UserToTap = &l_Adapter->m_UserToTap; - - // for IPv6, need to use ethernet header with IPv6 proto - if ( IPH_GET_VER( ((IPHDR*) p_IRP->AssociatedIrp.SystemBuffer)->version_len) == 6 ) - { - p_UserToTap = &l_Adapter->m_UserToTap_IPv6; - } - - p_IRP->IoStatus.Information = l_IrpSp->Parameters.Write.Length; - - DUMP_PACKET2 ("IRP_MJ_WRITE P2P", - p_UserToTap, - (unsigned char *) p_IRP->AssociatedIrp.SystemBuffer, - l_IrpSp->Parameters.Write.Length); - - //===================================================== - // If IPv4 packet, check whether or not packet - // was truncated. - //===================================================== -#if PACKET_TRUNCATION_CHECK - IPv4PacketSizeVerify ((unsigned char *) p_IRP->AssociatedIrp.SystemBuffer, - l_IrpSp->Parameters.Write.Length, - TRUE, - "RX", - &l_Adapter->m_RxTrunc); -#endif - - NdisMEthIndicateReceive - (l_Adapter->m_MiniportAdapterHandle, - (NDIS_HANDLE) l_Adapter, - (unsigned char *) p_UserToTap, - sizeof (ETH_HEADER), - (unsigned char *) p_IRP->AssociatedIrp.SystemBuffer, - l_IrpSp->Parameters.Write.Length, - l_IrpSp->Parameters.Write.Length); - - NdisMEthIndicateReceiveComplete (l_Adapter->m_MiniportAdapterHandle); - - p_IRP->IoStatus.Status = l_Status = STATUS_SUCCESS; - } - __except (EXCEPTION_EXECUTE_HANDLER) - { - DEBUGP (("[%s] NdisMEthIndicateReceive failed in IRP_MJ_WRITE (P2P)\n", - NAME (l_Adapter))); - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL; - p_IRP->IoStatus.Information = 0; - } - } - else - { - DEBUGP (("[%s] Bad buffer size in IRP_MJ_WRITE, len=%d\n", - NAME (l_Adapter), - l_IrpSp->Parameters.Write.Length)); - NOTE_ERROR (); - p_IRP->IoStatus.Information = 0; // ETHERNET_HEADER_SIZE; - p_IRP->IoStatus.Status = l_Status = STATUS_BUFFER_TOO_SMALL; - } - - if (l_Status == STATUS_SUCCESS) - INCREMENT_STAT (l_Adapter->m_Rx); - else - INCREMENT_STAT (l_Adapter->m_RxErr); - - IoCompleteRequest (p_IRP, IO_NO_INCREMENT); - break; - } - - //-------------------------------------------------------------- - // User mode thread has called CreateFile() on the tap device - //-------------------------------------------------------------- - case IRP_MJ_CREATE: - { - BOOLEAN succeeded = FALSE; - BOOLEAN mutex_succeeded; - - DEBUGP - (("[%s] [TAP] release [%d.%d] open request (m_TapOpens=%d)\n", - NAME (l_Adapter), TAP_DRIVER_MAJOR_VERSION, - TAP_DRIVER_MINOR_VERSION, l_Adapter->m_Extension.m_TapOpens)); - - ACQUIRE_MUTEX_ADAPTIVE (&l_Adapter->m_Extension.m_OpenCloseMutex, mutex_succeeded); - if (mutex_succeeded) - { - if (l_Adapter->m_Extension.m_TapIsRunning && !l_Adapter->m_Extension.m_TapOpens) - { - ResetTapAdapterState (l_Adapter); - l_Adapter->m_Extension.m_TapOpens = 1; - succeeded = TRUE; - } - - if (succeeded) - { - INCREMENT_STAT (l_Adapter->m_Extension.m_NumTapOpens); - p_IRP->IoStatus.Status = l_Status = STATUS_SUCCESS; - p_IRP->IoStatus.Information = 0; - } - else - { - DEBUGP (("[%s] TAP is presently unavailable (m_TapOpens=%d)\n", - NAME (l_Adapter), l_Adapter->m_Extension.m_TapOpens)); - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL; - p_IRP->IoStatus.Information = 0; - } - - RELEASE_MUTEX (&l_Adapter->m_Extension.m_OpenCloseMutex); - } - else - { - DEBUGP (("[%s] TAP is presently locked (m_TapOpens=%d)\n", - NAME (l_Adapter), l_Adapter->m_Extension.m_TapOpens)); - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL; - p_IRP->IoStatus.Information = 0; - } - - IoCompleteRequest (p_IRP, IO_NO_INCREMENT); - break; - } - - //----------------------------------------------------------- - // User mode thread called CloseHandle() on the tap device - //----------------------------------------------------------- - case IRP_MJ_CLOSE: - { - BOOLEAN mutex_succeeded; - - DEBUGP (("[%s] [TAP] release [%d.%d] close/cleanup request\n", - NAME (l_Adapter), TAP_DRIVER_MAJOR_VERSION, - TAP_DRIVER_MINOR_VERSION)); - - ACQUIRE_MUTEX_ADAPTIVE (&l_Adapter->m_Extension.m_OpenCloseMutex, mutex_succeeded); - if (mutex_succeeded) - { - l_Adapter->m_Extension.m_TapOpens = 0; - ResetTapAdapterState (l_Adapter); - FlushQueues (&l_Adapter->m_Extension); - SetMediaStatus (l_Adapter, FALSE); - RELEASE_MUTEX (&l_Adapter->m_Extension.m_OpenCloseMutex); - } - else - { - DEBUGP (("[%s] TAP is presently locked (m_TapOpens=%d)\n", - NAME (l_Adapter), l_Adapter->m_Extension.m_TapOpens)); - NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL; - p_IRP->IoStatus.Information = 0; - } - - IoCompleteRequest (p_IRP, IO_NO_INCREMENT); - break; - } - - //------------------ - // Strange Request - //------------------ - default: - { - //NOTE_ERROR (); - p_IRP->IoStatus.Status = l_Status = STATUS_UNSUCCESSFUL; - IoCompleteRequest (p_IRP, IO_NO_INCREMENT); - break; - } - } - - return l_Status; -} - -//============================================================= -// CompleteIRP is normally called with an adapter -> userspace -// network packet and an IRP (Pending I/O request) from userspace. -// -// The IRP will normally represent a queued overlapped read -// operation from userspace that is in a wait state. -// -// Use the ethernet packet to satisfy the IRP. -//============================================================= - -NTSTATUS -CompleteIRP (IN PIRP p_IRP, - IN TapPacketPointer p_PacketBuffer, - IN CCHAR PriorityBoost) -{ - NTSTATUS l_Status = STATUS_UNSUCCESSFUL; - - int offset; - int len; - - MYASSERT (p_IRP); - MYASSERT (p_PacketBuffer); - - IoSetCancelRoutine (p_IRP, NULL); // Disable cancel routine - - //------------------------------------------- - // While p_PacketBuffer always contains a - // full ethernet packet, including the - // ethernet header, in point-to-point mode, - // we only want to return the IPv4 - // component. - //------------------------------------------- - - if (p_PacketBuffer->m_SizeFlags & TP_TUN) - { - offset = ETHERNET_HEADER_SIZE; - len = (int) (p_PacketBuffer->m_SizeFlags & TP_SIZE_MASK) - ETHERNET_HEADER_SIZE; - } - else - { - offset = 0; - len = (p_PacketBuffer->m_SizeFlags & TP_SIZE_MASK); - } - - if (len < 0 || (int) p_IRP->IoStatus.Information < len) - { - p_IRP->IoStatus.Information = 0; - p_IRP->IoStatus.Status = STATUS_BUFFER_OVERFLOW; - NOTE_ERROR (); - } - else - { - p_IRP->IoStatus.Information = len; - p_IRP->IoStatus.Status = l_Status = STATUS_SUCCESS; - - __try - { - NdisMoveMemory (p_IRP->AssociatedIrp.SystemBuffer, - p_PacketBuffer->m_Data + offset, - len); - } - __except (EXCEPTION_EXECUTE_HANDLER) - { - NOTE_ERROR (); - p_IRP->IoStatus.Status = STATUS_UNSUCCESSFUL; - p_IRP->IoStatus.Information = 0; - } - } - - __try - { - NdisFreeMemory (p_PacketBuffer, - TAP_PACKET_SIZE (p_PacketBuffer->m_SizeFlags & TP_SIZE_MASK), - 0); - } - __except (EXCEPTION_EXECUTE_HANDLER) - { - } - - if (l_Status == STATUS_SUCCESS) - { - IoCompleteRequest (p_IRP, PriorityBoost); - } - else - IoCompleteRequest (p_IRP, IO_NO_INCREMENT); - - return l_Status; -} - -//============================================== -// IRPs get cancelled for a number of reasons. -// -// The TAP device could be closed by userspace -// when there are still pending read operations. -// -// The user could disable the TAP adapter in the -// network connections control panel, while the -// device is still open by a process. -//============================================== -VOID -CancelIRPCallback (IN PDEVICE_OBJECT p_DeviceObject, - IN PIRP p_IRP) -{ - TapAdapterPointer l_Adapter = LookupAdapterInInstanceList (p_DeviceObject); - CancelIRP (l_Adapter ? &l_Adapter->m_Extension : NULL, p_IRP, TRUE); -} - -VOID -CancelIRP (TapExtensionPointer p_Extension, - IN PIRP p_IRP, - BOOLEAN callback) -{ - BOOLEAN exists = FALSE; - - MYASSERT (p_IRP); - - if (p_Extension) - { - NdisAcquireSpinLock (&p_Extension->m_QueueLock); - exists = (QueueExtract (p_Extension->m_IrpQueue, p_IRP) == p_IRP); - NdisReleaseSpinLock (&p_Extension->m_QueueLock); - } - else - exists = TRUE; - - if (exists) - { - IoSetCancelRoutine (p_IRP, NULL); - p_IRP->IoStatus.Status = STATUS_CANCELLED; - p_IRP->IoStatus.Information = 0; - } - - if (callback) - IoReleaseCancelSpinLock (p_IRP->CancelIrql); - - if (exists) - IoCompleteRequest (p_IRP, IO_NO_INCREMENT); -} - -//=========================================== -// Exhaust packet, IRP, and injection queues. -//=========================================== -VOID -FlushQueues (TapExtensionPointer p_Extension) -{ - PIRP l_IRP; - TapPacketPointer l_PacketBuffer; - InjectPacketPointer l_InjectBuffer; - int n_IRP=0, n_Packet=0, n_Inject=0; - - MYASSERT (p_Extension); - MYASSERT (p_Extension->m_TapDevice); - - while (TRUE) - { - NdisAcquireSpinLock (&p_Extension->m_QueueLock); - l_IRP = QueuePop (p_Extension->m_IrpQueue); - NdisReleaseSpinLock (&p_Extension->m_QueueLock); - if (l_IRP) - { - ++n_IRP; - CancelIRP (NULL, l_IRP, FALSE); - } - else - break; - } - - while (TRUE) - { - NdisAcquireSpinLock (&p_Extension->m_QueueLock); - l_PacketBuffer = QueuePop (p_Extension->m_PacketQueue); - NdisReleaseSpinLock (&p_Extension->m_QueueLock); - if (l_PacketBuffer) - { - ++n_Packet; - MemFree (l_PacketBuffer, TAP_PACKET_SIZE (l_PacketBuffer->m_SizeFlags & TP_SIZE_MASK)); - } - else - break; - } - - while (TRUE) - { - NdisAcquireSpinLock (&p_Extension->m_InjectLock); - l_InjectBuffer = QueuePop (p_Extension->m_InjectQueue); - NdisReleaseSpinLock (&p_Extension->m_InjectLock); - if (l_InjectBuffer) - { - ++n_Inject; - INJECT_PACKET_FREE(l_InjectBuffer); - } - else - break; - } - - DEBUGP (( - "[%s] [TAP] FlushQueues n_IRP=[%d,%d,%d] n_Packet=[%d,%d,%d] n_Inject=[%d,%d,%d]\n", - p_Extension->m_TapName, - n_IRP, - p_Extension->m_IrpQueue->max_size, - IRP_QUEUE_SIZE, - n_Packet, - p_Extension->m_PacketQueue->max_size, - PACKET_QUEUE_SIZE, - n_Inject, - p_Extension->m_InjectQueue->max_size, - INJECT_QUEUE_SIZE - )); -} - -//=================================================== -// Tell Windows whether the TAP device should be -// considered "connected" or "disconnected". -//=================================================== -VOID -SetMediaStatus (TapAdapterPointer p_Adapter, BOOLEAN state) -{ - if (p_Adapter->m_MediaState != state && !p_Adapter->m_MediaStateAlwaysConnected) - { - if (state) - NdisMIndicateStatus (p_Adapter->m_MiniportAdapterHandle, - NDIS_STATUS_MEDIA_CONNECT, NULL, 0); - else - NdisMIndicateStatus (p_Adapter->m_MiniportAdapterHandle, - NDIS_STATUS_MEDIA_DISCONNECT, NULL, 0); - - NdisMIndicateStatusComplete (p_Adapter->m_MiniportAdapterHandle); - p_Adapter->m_MediaState = state; - } -} - - -//====================================================== -// If DHCP mode is used together with tun -// mode, consider the fact that the P2P remote subnet -// might enclose the DHCP masq server address. -//====================================================== -VOID -CheckIfDhcpAndTunMode (TapAdapterPointer p_Adapter) -{ - if (p_Adapter->m_tun && p_Adapter->m_dhcp_enabled) - { - if ((p_Adapter->m_dhcp_server_ip & p_Adapter->m_remoteNetmask) == p_Adapter->m_remoteNetwork) - { - COPY_MAC (p_Adapter->m_dhcp_server_mac, p_Adapter->m_TapToUser.dest); - p_Adapter->m_dhcp_server_arp = FALSE; - } - } -} - -//=================================================== -// Generate an ARP reply message for specific kinds -// ARP queries. -//=================================================== -BOOLEAN -ProcessARP (TapAdapterPointer p_Adapter, - const PARP_PACKET src, - const IPADDR adapter_ip, - const IPADDR ip_network, - const IPADDR ip_netmask, - const MACADDR mac) -{ - //----------------------------------------------- - // Is this the kind of packet we are looking for? - //----------------------------------------------- - if (src->m_Proto == htons (ETH_P_ARP) - && MAC_EQUAL (src->m_MAC_Source, p_Adapter->m_MAC) - && MAC_EQUAL (src->m_ARP_MAC_Source, p_Adapter->m_MAC) - && MAC_EQUAL (src->m_MAC_Destination, p_Adapter->m_MAC_Broadcast) - && src->m_ARP_Operation == htons (ARP_REQUEST) - && src->m_MAC_AddressType == htons (MAC_ADDR_TYPE) - && src->m_MAC_AddressSize == sizeof (MACADDR) - && src->m_PROTO_AddressType == htons (ETH_P_IP) - && src->m_PROTO_AddressSize == sizeof (IPADDR) - && src->m_ARP_IP_Source == adapter_ip - && (src->m_ARP_IP_Destination & ip_netmask) == ip_network - && src->m_ARP_IP_Destination != adapter_ip) - { - ARP_PACKET *arp = (ARP_PACKET *) MemAlloc (sizeof (ARP_PACKET), TRUE); - if (arp) - { - //---------------------------------------------- - // Initialize ARP reply fields - //---------------------------------------------- - arp->m_Proto = htons (ETH_P_ARP); - arp->m_MAC_AddressType = htons (MAC_ADDR_TYPE); - arp->m_PROTO_AddressType = htons (ETH_P_IP); - arp->m_MAC_AddressSize = sizeof (MACADDR); - arp->m_PROTO_AddressSize = sizeof (IPADDR); - arp->m_ARP_Operation = htons (ARP_REPLY); - - //---------------------------------------------- - // ARP addresses - //---------------------------------------------- - COPY_MAC (arp->m_MAC_Source, mac); - COPY_MAC (arp->m_MAC_Destination, p_Adapter->m_MAC); - COPY_MAC (arp->m_ARP_MAC_Source, mac); - COPY_MAC (arp->m_ARP_MAC_Destination, p_Adapter->m_MAC); - arp->m_ARP_IP_Source = src->m_ARP_IP_Destination; - arp->m_ARP_IP_Destination = adapter_ip; - - DUMP_PACKET ("ProcessARP", - (unsigned char *) arp, - sizeof (ARP_PACKET)); - - InjectPacketDeferred (p_Adapter, (UCHAR *) arp, sizeof (ARP_PACKET)); - - MemFree (arp, sizeof (ARP_PACKET)); - } - - return TRUE; - } - else - return FALSE; -} - -//=============================================================== -// Used in cases where internally generated packets such as -// ARP or DHCP replies must be returned to the kernel, to be -// seen as an incoming packet "arriving" on the interface. -//=============================================================== - -// Defer packet injection till IRQL < DISPATCH_LEVEL -VOID -InjectPacketDeferred (TapAdapterPointer p_Adapter, - UCHAR *packet, - const unsigned int len) -{ - InjectPacketPointer l_InjectBuffer; - PVOID result; - - if (NdisAllocateMemoryWithTag (&l_InjectBuffer, - INJECT_PACKET_SIZE (len), - 'IPAT') == NDIS_STATUS_SUCCESS) - { - l_InjectBuffer->m_Size = len; - NdisMoveMemory (l_InjectBuffer->m_Data, packet, len); - NdisAcquireSpinLock (&p_Adapter->m_Extension.m_InjectLock); - result = QueuePush (p_Adapter->m_Extension.m_InjectQueue, l_InjectBuffer); - NdisReleaseSpinLock (&p_Adapter->m_Extension.m_InjectLock); - if (result) - KeInsertQueueDpc (&p_Adapter->m_Extension.m_InjectDpc, p_Adapter, NULL); - else - INJECT_PACKET_FREE(l_InjectBuffer); - } -} - -// Handle the injection of previously deferred packets -VOID -InjectPacketDpc(KDPC *Dpc, - PVOID DeferredContext, - PVOID SystemArgument1, - PVOID SystemArgument2) -{ - InjectPacketPointer l_InjectBuffer; - TapAdapterPointer l_Adapter = (TapAdapterPointer)SystemArgument1; - while (TRUE) - { - NdisAcquireSpinLock (&l_Adapter->m_Extension.m_InjectLock); - l_InjectBuffer = QueuePop (l_Adapter->m_Extension.m_InjectQueue); - NdisReleaseSpinLock (&l_Adapter->m_Extension.m_InjectLock); - if (l_InjectBuffer) - { - InjectPacketNow(l_Adapter, l_InjectBuffer->m_Data, l_InjectBuffer->m_Size); - INJECT_PACKET_FREE(l_InjectBuffer); - } - else - break; - } -} - -// Do packet injection now -VOID -InjectPacketNow (TapAdapterPointer p_Adapter, - UCHAR *packet, - const unsigned int len) -{ - MYASSERT (len >= ETHERNET_HEADER_SIZE); - - __try - { - //------------------------------------------------------------ - // NdisMEthIndicateReceive and NdisMEthIndicateReceiveComplete - // could potentially be called reentrantly both here and in - // TapDeviceHook/IRP_MJ_WRITE. - // - // The DDK docs imply that this is okay. - // - // Note that reentrant behavior could only occur if the - // non-deferred version of InjectPacket is used. - //------------------------------------------------------------ - NdisMEthIndicateReceive - (p_Adapter->m_MiniportAdapterHandle, - (NDIS_HANDLE) p_Adapter, - packet, - ETHERNET_HEADER_SIZE, - packet + ETHERNET_HEADER_SIZE, - len - ETHERNET_HEADER_SIZE, - len - ETHERNET_HEADER_SIZE); - - NdisMEthIndicateReceiveComplete (p_Adapter->m_MiniportAdapterHandle); - } - __except (EXCEPTION_EXECUTE_HANDLER) - { - DEBUGP (("[%s] NdisMEthIndicateReceive failed in InjectPacketNow\n", - NAME (p_Adapter))); - NOTE_ERROR (); - } -} - -//=================================================================== -// Go back to default TAP mode from Point-To-Point mode. -// Also reset (i.e. disable) DHCP Masq mode. -//=================================================================== -VOID ResetTapAdapterState (TapAdapterPointer p_Adapter) -{ - // Point-To-Point - p_Adapter->m_tun = FALSE; - p_Adapter->m_localIP = 0; - p_Adapter->m_remoteNetwork = 0; - p_Adapter->m_remoteNetmask = 0; - NdisZeroMemory (&p_Adapter->m_TapToUser, sizeof (p_Adapter->m_TapToUser)); - NdisZeroMemory (&p_Adapter->m_UserToTap, sizeof (p_Adapter->m_UserToTap)); - NdisZeroMemory (&p_Adapter->m_UserToTap_IPv6, sizeof (p_Adapter->m_UserToTap_IPv6)); - - // DHCP Masq - p_Adapter->m_dhcp_enabled = FALSE; - p_Adapter->m_dhcp_server_arp = FALSE; - p_Adapter->m_dhcp_user_supplied_options_buffer_len = 0; - p_Adapter->m_dhcp_addr = 0; - p_Adapter->m_dhcp_netmask = 0; - p_Adapter->m_dhcp_server_ip = 0; - p_Adapter->m_dhcp_lease_time = 0; - p_Adapter->m_dhcp_received_discover = FALSE; - p_Adapter->m_dhcp_bad_requests = 0; - NdisZeroMemory (p_Adapter->m_dhcp_server_mac, sizeof (MACADDR)); -} - -#if ENABLE_NONADMIN - -//=================================================================== -// Set TAP device handle to be accessible without admin privileges. -//=================================================================== -VOID AllowNonAdmin (TapExtensionPointer p_Extension) -{ - NTSTATUS stat; - SECURITY_DESCRIPTOR sd; - OBJECT_ATTRIBUTES oa; - IO_STATUS_BLOCK isb; - HANDLE hand = NULL; - - NdisZeroMemory (&sd, sizeof (sd)); - NdisZeroMemory (&oa, sizeof (oa)); - NdisZeroMemory (&isb, sizeof (isb)); - - if (!p_Extension->m_CreatedUnicodeLinkName) - { - DEBUGP (("[TAP] AllowNonAdmin: UnicodeLinkName is uninitialized\n")); - NOTE_ERROR (); - return; - } - - stat = RtlCreateSecurityDescriptor (&sd, SECURITY_DESCRIPTOR_REVISION); - if (stat != STATUS_SUCCESS) - { - DEBUGP (("[TAP] AllowNonAdmin: RtlCreateSecurityDescriptor failed\n")); - NOTE_ERROR (); - return; - } - - InitializeObjectAttributes ( - &oa, - &p_Extension->m_UnicodeLinkName, - OBJ_KERNEL_HANDLE, - NULL, - NULL - ); - - stat = ZwOpenFile ( - &hand, - WRITE_DAC, - &oa, - &isb, - 0, - 0 - ); - if (stat != STATUS_SUCCESS) - { - DEBUGP (("[TAP] AllowNonAdmin: ZwOpenFile failed, status=0x%08x\n", (unsigned int)stat)); - NOTE_ERROR (); - return; - } - - stat = ZwSetSecurityObject (hand, DACL_SECURITY_INFORMATION, &sd); - if (stat != STATUS_SUCCESS) - { - DEBUGP (("[TAP] AllowNonAdmin: ZwSetSecurityObject failed\n")); - NOTE_ERROR (); - return; - } - - stat = ZwClose (hand); - if (stat != STATUS_SUCCESS) - { - DEBUGP (("[TAP] AllowNonAdmin: ZwClose failed\n")); - NOTE_ERROR (); - return; - } - - DEBUGP (("[TAP] AllowNonAdmin: SUCCEEDED\n")); -} - -#endif - -#if PACKET_TRUNCATION_CHECK - -VOID -IPv4PacketSizeVerify (const UCHAR *data, ULONG length, BOOLEAN tun, const char *prefix, LONG *counter) -{ - const IPHDR *ip; - int len = length; - - if (tun) - { - ip = (IPHDR *) data; - } - else - { - if (length >= sizeof (ETH_HEADER)) - { - const ETH_HEADER *eth = (ETH_HEADER *) data; - - if (eth->proto != htons (ETH_P_IP)) - return; - - ip = (IPHDR *) (data + sizeof (ETH_HEADER)); - len -= sizeof (ETH_HEADER); - } - else - return; - } - - if (len >= sizeof (IPHDR)) - { - const int totlen = ntohs (ip->tot_len); - - DEBUGP (("[TAP] IPv4PacketSizeVerify %s len=%d totlen=%d\n", prefix, len, totlen)); - - if (len != totlen) - ++(*counter); - } -} - -#endif - -//====================================================================== -// End of Source -//====================================================================== diff --git a/tap-win32/types.h b/tap-win32/types.h deleted file mode 100755 index bdc08e7..0000000 --- a/tap-win32/types.h +++ /dev/null @@ -1,178 +0,0 @@ -/* - * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap - * device functionality on Windows. - * - * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson. - * - * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc., - * and is released under the GPL version 2 (see below). - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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 (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#ifndef TAP_TYPES_DEFINED -#define TAP_TYPES_DEFINED - -typedef struct _Queue -{ - ULONG base; - ULONG size; - ULONG capacity; - ULONG max_size; - PVOID data[]; -} Queue; - -typedef struct _TapAdapter; -typedef struct _TapPacket; - -typedef union _TapAdapterQuery -{ - NDIS_HARDWARE_STATUS m_HardwareStatus; - NDIS_MEDIUM m_Medium; - NDIS_PHYSICAL_MEDIUM m_PhysicalMedium; - UCHAR m_MacAddress [6]; - UCHAR m_Buffer [256]; - ULONG m_Long; - USHORT m_Short; - UCHAR m_Byte; -} -TapAdapterQuery, *TapAdapterQueryPointer; - -typedef struct _TapExtension -{ - // TAP device object and packet queues - Queue *m_PacketQueue, *m_IrpQueue; - PDEVICE_OBJECT m_TapDevice; - NDIS_HANDLE m_TapDeviceHandle; - ULONG m_TapOpens; - - // Used to lock packet queues - NDIS_SPIN_LOCK m_QueueLock; - BOOLEAN m_AllocatedSpinlocks; - - // Used to bracket open/close - // state changes. - MUTEX m_OpenCloseMutex; - - // True if device has been permanently halted - BOOLEAN m_Halt; - - // TAP device name - unsigned char *m_TapName; - UNICODE_STRING m_UnicodeLinkName; - BOOLEAN m_CreatedUnicodeLinkName; - - // Used for device status ioctl only - const char *m_LastErrorFilename; - int m_LastErrorLineNumber; - LONG m_NumTapOpens; - - // Flags - BOOLEAN m_TapIsRunning; - BOOLEAN m_CalledTapDeviceFreeResources; - - // DPC queue for deferred packet injection - BOOLEAN m_InjectDpcInitialized; - KDPC m_InjectDpc; - NDIS_SPIN_LOCK m_InjectLock; - Queue *m_InjectQueue; -} -TapExtension, *TapExtensionPointer; - -typedef struct _TapPacket - { -# define TAP_PACKET_SIZE(data_size) (sizeof (TapPacket) + (data_size)) -# define TP_TUN 0x80000000 -# define TP_SIZE_MASK (~TP_TUN) - ULONG m_SizeFlags; - UCHAR m_Data []; // m_Data must be the last struct member - } -TapPacket, *TapPacketPointer; - -typedef struct _InjectPacket - { -# define INJECT_PACKET_SIZE(data_size) (sizeof (InjectPacket) + (data_size)) -# define INJECT_PACKET_FREE(ib) NdisFreeMemory ((ib), INJECT_PACKET_SIZE ((ib)->m_Size), 0) - ULONG m_Size; - UCHAR m_Data []; // m_Data must be the last struct member - } -InjectPacket, *InjectPacketPointer; - -typedef struct _TapAdapter -{ -# define NAME(a) ((a)->m_NameAnsi.Buffer) - ANSI_STRING m_NameAnsi; - MACADDR m_MAC; - BOOLEAN m_InterfaceIsRunning; - NDIS_HANDLE m_MiniportAdapterHandle; - LONG m_Rx, m_Tx, m_RxErr, m_TxErr; -#if PACKET_TRUNCATION_CHECK - LONG m_RxTrunc, m_TxTrunc; -#endif - NDIS_MEDIUM m_Medium; - ULONG m_Lookahead; - ULONG m_MTU; - - // TRUE if adapter should always be - // "connected" even when device node - // is not open by a userspace process. - BOOLEAN m_MediaStateAlwaysConnected; - - // TRUE if device is "connected" - BOOLEAN m_MediaState; - - // Adapter power state - char m_DeviceState; - - // Info for point-to-point mode - BOOLEAN m_tun; - IPADDR m_localIP; - IPADDR m_remoteNetwork; - IPADDR m_remoteNetmask; - ETH_HEADER m_TapToUser; - ETH_HEADER m_UserToTap; - ETH_HEADER m_UserToTap_IPv6; // same as UserToTap but proto=ipv6 - MACADDR m_MAC_Broadcast; - - // Used for DHCP server masquerade - BOOLEAN m_dhcp_enabled; - IPADDR m_dhcp_addr; - ULONG m_dhcp_netmask; - IPADDR m_dhcp_server_ip; - BOOLEAN m_dhcp_server_arp; - MACADDR m_dhcp_server_mac; - ULONG m_dhcp_lease_time; - UCHAR m_dhcp_user_supplied_options_buffer[DHCP_USER_SUPPLIED_OPTIONS_BUFFER_SIZE]; - ULONG m_dhcp_user_supplied_options_buffer_len; - BOOLEAN m_dhcp_received_discover; - ULONG m_dhcp_bad_requests; - - // Help to tear down the adapter by keeping - // some state information on allocated - // resources. - BOOLEAN m_CalledAdapterFreeResources; - BOOLEAN m_RegisteredAdapterShutdownHandler; - - // Multicast list info - NDIS_SPIN_LOCK m_MCLock; - BOOLEAN m_MCLockAllocated; - ULONG m_MCListSize; - MC_LIST m_MCList; - - // Information on the TAP device - TapExtension m_Extension; -} TapAdapter, *TapAdapterPointer; - -#endif |