mirror of
https://github.com/SoftEtherVPN/SoftEtherVPN.git
synced 2025-03-13 15:49:59 +03:00
343 lines
13 KiB
C
343 lines
13 KiB
C
// SoftEther VPN Source Code
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// Kernel Device Driver
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//
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// SoftEther VPN Server, Client and Bridge are free software under GPLv2.
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//
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// Copyright (c) 2012-2015 Daiyuu Nobori.
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// Copyright (c) 2012-2015 SoftEther VPN Project, University of Tsukuba, Japan.
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// Copyright (c) 2012-2015 SoftEther Corporation.
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//
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// All Rights Reserved.
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//
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// http://www.softether.org/
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//
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// Author: Daiyuu Nobori
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// Comments: Tetsuo Sugiyama, Ph.D.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// version 2 as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License version 2
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// THE LICENSE AGREEMENT IS ATTACHED ON THE SOURCE-CODE PACKAGE
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// AS "LICENSE.TXT" FILE. READ THE TEXT FILE IN ADVANCE TO USE THE SOFTWARE.
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//
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//
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// THIS SOFTWARE IS DEVELOPED IN JAPAN, AND DISTRIBUTED FROM JAPAN,
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// UNDER JAPANESE LAWS. YOU MUST AGREE IN ADVANCE TO USE, COPY, MODIFY,
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// MERGE, PUBLISH, DISTRIBUTE, SUBLICENSE, AND/OR SELL COPIES OF THIS
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// SOFTWARE, THAT ANY JURIDICAL DISPUTES WHICH ARE CONCERNED TO THIS
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// SOFTWARE OR ITS CONTENTS, AGAINST US (SOFTETHER PROJECT, SOFTETHER
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// CORPORATION, DAIYUU NOBORI OR OTHER SUPPLIERS), OR ANY JURIDICAL
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// DISPUTES AGAINST US WHICH ARE CAUSED BY ANY KIND OF USING, COPYING,
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// MODIFYING, MERGING, PUBLISHING, DISTRIBUTING, SUBLICENSING, AND/OR
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// SELLING COPIES OF THIS SOFTWARE SHALL BE REGARDED AS BE CONSTRUED AND
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// CONTROLLED BY JAPANESE LAWS, AND YOU MUST FURTHER CONSENT TO
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// EXCLUSIVE JURISDICTION AND VENUE IN THE COURTS SITTING IN TOKYO,
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// JAPAN. YOU MUST WAIVE ALL DEFENSES OF LACK OF PERSONAL JURISDICTION
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// AND FORUM NON CONVENIENS. PROCESS MAY BE SERVED ON EITHER PARTY IN
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// THE MANNER AUTHORIZED BY APPLICABLE LAW OR COURT RULE.
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//
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// USE ONLY IN JAPAN. DO NOT USE THIS SOFTWARE IN ANOTHER COUNTRY UNLESS
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// YOU HAVE A CONFIRMATION THAT THIS SOFTWARE DOES NOT VIOLATE ANY
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// CRIMINAL LAWS OR CIVIL RIGHTS IN THAT PARTICULAR COUNTRY. USING THIS
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// SOFTWARE IN OTHER COUNTRIES IS COMPLETELY AT YOUR OWN RISK. THE
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// SOFTETHER VPN PROJECT HAS DEVELOPED AND DISTRIBUTED THIS SOFTWARE TO
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// COMPLY ONLY WITH THE JAPANESE LAWS AND EXISTING CIVIL RIGHTS INCLUDING
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// PATENTS WHICH ARE SUBJECTS APPLY IN JAPAN. OTHER COUNTRIES' LAWS OR
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// CIVIL RIGHTS ARE NONE OF OUR CONCERNS NOR RESPONSIBILITIES. WE HAVE
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// NEVER INVESTIGATED ANY CRIMINAL REGULATIONS, CIVIL LAWS OR
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// INTELLECTUAL PROPERTY RIGHTS INCLUDING PATENTS IN ANY OF OTHER 200+
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// COUNTRIES AND TERRITORIES. BY NATURE, THERE ARE 200+ REGIONS IN THE
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// WORLD, WITH DIFFERENT LAWS. IT IS IMPOSSIBLE TO VERIFY EVERY
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// COUNTRIES' LAWS, REGULATIONS AND CIVIL RIGHTS TO MAKE THE SOFTWARE
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// COMPLY WITH ALL COUNTRIES' LAWS BY THE PROJECT. EVEN IF YOU WILL BE
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// SUED BY A PRIVATE ENTITY OR BE DAMAGED BY A PUBLIC SERVANT IN YOUR
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// COUNTRY, THE DEVELOPERS OF THIS SOFTWARE WILL NEVER BE LIABLE TO
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// RECOVER OR COMPENSATE SUCH DAMAGES, CRIMINAL OR CIVIL
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// RESPONSIBILITIES. NOTE THAT THIS LINE IS NOT LICENSE RESTRICTION BUT
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// JUST A STATEMENT FOR WARNING AND DISCLAIMER.
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//
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//
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// SOURCE CODE CONTRIBUTION
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// ------------------------
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//
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// Your contribution to SoftEther VPN Project is much appreciated.
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// Please send patches to us through GitHub.
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// Read the SoftEther VPN Patch Acceptance Policy in advance:
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// http://www.softether.org/5-download/src/9.patch
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//
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//
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// DEAR SECURITY EXPERTS
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// ---------------------
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//
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// If you find a bug or a security vulnerability please kindly inform us
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// about the problem immediately so that we can fix the security problem
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// to protect a lot of users around the world as soon as possible.
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//
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// Our e-mail address for security reports is:
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// softether-vpn-security [at] softether.org
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//
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// Please note that the above e-mail address is not a technical support
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// inquiry address. If you need technical assistance, please visit
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// http://www.softether.org/ and ask your question on the users forum.
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//
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// Thank you for your cooperation.
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//
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//
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// NO MEMORY OR RESOURCE LEAKS
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// ---------------------------
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//
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// The memory-leaks and resource-leaks verification under the stress
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// test has been passed before release this source code.
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// Neo.h
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// Header of Neo.c
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#ifndef NEO_H
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#define NEO_H
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// Identification string (NDIS)
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#define NDIS_NEO_HARDWARE_ID "VPN Client Adapter - %s"
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#define NDIS_NEO_DEVICE_NAME "\\Device\\NEO_%s_DEVICE"
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#define NDIS_NEO_DEVICE_NAME_WIN32 "\\DosDevices\\NEO_%s_DEVICE"
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#define NDIS_NEO_DEVICE_FILE_NAME "\\\\.\\NEO_NEOADAPTER_%s_DEVICE"
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#define NDIS_NEO_EVENT_NAME "\\BaseNamedObjects\\NEO_EVENT_%s"
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#define NDIS_NEO_EVENT_NAME_WIN32 "Global\\NEO_EVENT_NEOADAPTER_%s"
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// Constant
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#define NEO_MAX_PACKET_SIZE 1600
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#define NEO_MAX_PACKET_SIZE_ANNOUNCE 1514
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#define NEO_MIN_PACKET_SIZE 14
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#define NEO_PACKET_HEADER_SIZE 14
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#define NEO_MAX_FRAME_SIZE (NEO_MAX_PACKET_SIZE - NEO_MIN_PACKET_SIZE)
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#define NEO_MAX_SPEED_DEFAULT 1000000
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#define NEO_MAC_ADDRESS_SIZE 6
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#define NEO_MAX_MULTICASE 32
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// IOCTL constant
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#define NEO_IOCTL_SET_EVENT CTL_CODE(0x8000, 0, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define NEO_IOCTL_PUT_PACKET CTL_CODE(0x8000, 1, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define NEO_IOCTL_GET_PACKET CTL_CODE(0x8000, 2, METHOD_BUFFERED, FILE_ANY_ACCESS)
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// Packet data exchange related
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#define NEO_MAX_PACKET_EXCHANGE 256 // Number of packets that can be exchanged at a time
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#define NEO_MAX_PACKET_QUEUED 4096 // Maximum number of packets that can be queued
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#define NEO_EX_SIZEOF_NUM_PACKET 4 // Packet count data (UINT)
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#define NEO_EX_SIZEOF_LENGTH_PACKET 4 // Length data of the packet data (UINT)
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#define NEO_EX_SIZEOF_LEFT_FLAG 4 // Flag to indicate that the packet is still
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#define NEO_EX_SIZEOF_ONE_PACKET 1600 // Data area occupied by a packet data
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#define NEO_EXCHANGE_BUFFER_SIZE (NEO_EX_SIZEOF_NUM_PACKET + NEO_EX_SIZEOF_LEFT_FLAG + \
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(NEO_EX_SIZEOF_LENGTH_PACKET + NEO_EX_SIZEOF_ONE_PACKET) * (NEO_MAX_PACKET_EXCHANGE + 1))
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#define NEO_NUM_PACKET(buf) (*((UINT *)((UCHAR *)buf + 0)))
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#define NEO_SIZE_OF_PACKET(buf, i) (*((UINT *)((UCHAR *)buf + NEO_EX_SIZEOF_NUM_PACKET + \
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(i * (NEO_EX_SIZEOF_LENGTH_PACKET + NEO_EX_SIZEOF_ONE_PACKET)))))
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#define NEO_ADDR_OF_PACKET(buf, i) (((UINT *)((UCHAR *)buf + NEO_EX_SIZEOF_NUM_PACKET + \
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NEO_EX_SIZEOF_LENGTH_PACKET + \
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(i * (NEO_EX_SIZEOF_LENGTH_PACKET + NEO_EX_SIZEOF_ONE_PACKET)))))
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#define NEO_LEFT_FLAG(buf) NEO_SIZE_OF_PACKET(buf, NEO_MAX_PACKET_EXCHANGE)
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// Definitions needed to compile as a device driver
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#ifdef NEO_DEVICE_DRIVER
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// OS determination
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#ifdef WIN32
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#define OS_WIN32 // Microsoft Windows
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#else
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#define OS_UNIX // UNIX / Linux
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#endif
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// Type declaration
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#ifndef WINDOWS_H_INCLUDED
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#ifndef WIN9X
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typedef unsigned long BOOL;
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#endif // WIN9X
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#define TRUE 1
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#define FALSE 0
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#endif
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typedef unsigned long bool;
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#define true 1
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#define false 0
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typedef unsigned long long UINT64;
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typedef signed long long INT64;
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typedef unsigned short WORD;
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typedef unsigned short USHORT;
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typedef signed short SHORT;
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typedef unsigned char BYTE;
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typedef unsigned char UCHAR;
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typedef signed char CHAR;
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typedef unsigned long DWORD;
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#define INFINITE 0xFFFFFFFF
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#define LESS(a, max_value) ((a) < (max_value) ? (a) : (max_value))
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#define MORE(a, min_value) ((a) > (min_value) ? (a) : (min_value))
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#define INNER(a, b, c) (((b) <= (c) && (a) >= (b) && (a) <= (c)) || ((b) >= (c) && (a) >= (c) && (a) <= (b)))
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#define OUTER(a, b, c) (!INNER((a), (b), (c)))
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#define MAKESURE(a, b, c) (((b) <= (c)) ? (MORE(LESS((a), (c)), (b))) : (MORE(LESS((a), (b)), (c))))
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#define MIN(a, b) ((a) >= (b) ? (b) : (a))
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#define MAX(a, b) ((a) >= (b) ? (a) : (b))
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#define EQUAL_BOOL(a, b) (((a) && (b)) || ((!(a)) && (!(b))))
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#ifdef OS_WIN32
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// NDIS 5.0 related
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#include "NDIS5.h"
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#endif // OS_WIN32
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// Lock
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typedef struct _NEO_LOCK
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{
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#ifdef OS_WIN32
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NDIS_SPIN_LOCK spin_lock;
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#endif
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} NEO_LOCK;
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// Event
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typedef struct _NEO_EVENT
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{
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#ifdef OS_WIN32
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#ifndef WIN9X
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KEVENT *event;
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HANDLE event_handle;
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#else // WIN9X
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DWORD win32_event;
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#endif // WIN9X
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#endif
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} NEO_EVENT;
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// Packet queue
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typedef struct _NEO_QUEUE
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{
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struct _NEO_QUEUE *Next;
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UINT Size;
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void *Buf;
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} NEO_QUEUE;
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// Status
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typedef struct _NEO_STATUS
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{
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UINT NumPacketSend;
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UINT NumPacketRecv;
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UINT NumPacketSendError;
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UINT NumPacketRecvError;
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UINT NumPacketRecvNoBuffer;
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} NEO_STATUS;
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// NDIS packet buffer
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typedef struct _PACKET_BUFFER
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{
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void *Buf; // Buffer
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NDIS_PACKET *NdisPacket; // NDIS packet
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NDIS_BUFFER *NdisBuffer; // NDIS packet buffer
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NDIS_HANDLE PacketPool; // Packet pool
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NDIS_HANDLE BufferPool; // Buffer pool
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} PACKET_BUFFER;
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// Context
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typedef struct _NEO_CTX
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{
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NEO_EVENT *Event; // Packet reception notification event
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BOOL Opened; // Flag of whether opened
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BOOL Inited; // Initialization flag
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BOOL Initing; // Starting-up flag
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volatile BOOL Halting; // Halting flag
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BYTE MacAddress[6]; // MAC address
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BYTE padding[2]; // padding
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NEO_QUEUE *PacketQueue; // Transmission packet queue
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NEO_QUEUE *Tail; // Tail of the transmission packet queue
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UINT NumPacketQueue; // Number of queued packet
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NEO_LOCK *PacketQueueLock; // Transmission packet queue lock
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NEO_STATUS Status; // Status
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UINT CurrentPacketFilter; // Current packet filter value
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UINT CurrentProtocolOptions; // Current protocol option value
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BOOL Connected, ConnectedOld; // Cable connection state
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BOOL ConnectedForce; // Connection state forcibly notification
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#ifdef OS_WIN32
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NDIS_HANDLE NdisWrapper; // NDIS wrapper handle
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NDIS_HANDLE NdisControl; // NDIS control handle
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NDIS_HANDLE NdisMiniport; // NDIS miniport handle
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NDIS_HANDLE NdisContext; // NDIS context handle
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NDIS_HANDLE NdisConfig; // NDIS Config handle
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DEVICE_OBJECT *NdisControlDevice; // NDIS control device
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PDRIVER_DISPATCH DispatchTable[IRP_MJ_MAXIMUM_FUNCTION];
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PACKET_BUFFER *PacketBuffer[NEO_MAX_PACKET_EXCHANGE]; // NDIS packet buffer
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NDIS_PACKET *PacketBufferArray[NEO_MAX_PACKET_EXCHANGE]; // NDIS packet buffer array
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NDIS_HARDWARE_STATUS HardwareStatus; // Hardware state
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char HardwareID[MAX_SIZE]; // Hardware ID
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char HardwareID_Raw[MAX_SIZE]; // Original hardware ID
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char HardwarePrintableID[MAX_SIZE]; // Hardware ID (for display)
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#endif
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} NEO_CTX;
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extern NEO_CTX *ctx;
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// Neo.c routine
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void NeoNewStatus(NEO_STATUS *s);
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void NeoFreeStatus(NEO_STATUS *s);
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BOOL NeoInit();
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void NeoShutdown();
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void NeoInitPacketQueue();
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void NeoFreePacketQueue();
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void NeoClearPacketQueue();
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void NeoLockPacketQueue();
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void NeoUnlockPacketQueue();
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NEO_QUEUE *NeoGetNextQueue();
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void NeoFreeQueue(NEO_QUEUE *q);
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void NeoInsertQueue(void *buf, UINT size);
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UINT NeoGetNumQueue();
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void NeoStartAdapter();
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void NeoStopAdapter();
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void NeoRead(void *buf);
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void NeoWrite(void *buf);
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// Common routine (platform dependent)
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void *NeoMalloc(UINT size);
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void *NeoZeroMalloc(UINT size);
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void NeoFree(void *p);
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void NeoCopy(void *dst, void *src, UINT size);
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void NeoZero(void *dst, UINT size);
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NEO_LOCK *NeoNewLock();
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void NeoLock(NEO_LOCK *lock);
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void NeoUnlock(NEO_LOCK *lock);
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void NeoFreeLock(NEO_LOCK *lock);
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NEO_EVENT *NeoNewEvent(char *name);
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NEO_EVENT *NeoCreateWin9xEvent(DWORD h);
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void NeoFreeEvent(NEO_EVENT *event);
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void NeoSet(NEO_EVENT *event);
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void NeoReset(NEO_EVENT *event);
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#endif // NEO_DEVICE_DRIVER
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#endif // NEO_H
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// Developed by SoftEther VPN Project at University of Tsukuba in Japan.
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// Department of Computer Science has dozens of overly-enthusiastic geeks.
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// Join us: http://www.tsukuba.ac.jp/english/admission/
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