325 lines
8.8 KiB
C
325 lines
8.8 KiB
C
// SoftEther VPN Source Code - Stable Edition Repository
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// Cedar Communication Module
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//
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// SoftEther VPN Server, Client and Bridge are free software under the Apache License, Version 2.0.
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//
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// Copyright (c) Daiyuu Nobori.
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// Copyright (c) SoftEther VPN Project, University of Tsukuba, Japan.
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// Copyright (c) SoftEther Corporation.
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// Copyright (c) all contributors on SoftEther VPN project in GitHub.
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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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// This stable branch is officially managed by Daiyuu Nobori, the owner of SoftEther VPN Project.
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// Pull requests should be sent to the Developer Edition Master Repository on https://github.com/SoftEtherVPN/SoftEtherVPN
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//
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// License: The Apache License, Version 2.0
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// DISCLAIMER
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// ==========
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// THIS SOFTWARE IS DEVELOPED IN JAPAN, AND DISTRIBUTED FROM JAPAN, UNDER
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// JAPANESE LAWS. YOU MUST AGREE IN ADVANCE TO USE, COPY, MODIFY, MERGE, PUBLISH,
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// DISTRIBUTE, SUBLICENSE, AND/OR SELL COPIES OF THIS SOFTWARE, THAT ANY
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// JURIDICAL DISPUTES WHICH ARE CONCERNED TO THIS SOFTWARE OR ITS CONTENTS,
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// AGAINST US (SOFTETHER PROJECT, SOFTETHER CORPORATION, DAIYUU NOBORI OR OTHER
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// SUPPLIERS), OR ANY JURIDICAL DISPUTES AGAINST US WHICH ARE CAUSED BY ANY KIND
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// OF USING, COPYING, MODIFYING, MERGING, PUBLISHING, DISTRIBUTING, SUBLICENSING,
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// AND/OR 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 EXCLUSIVE
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// JURISDICTION AND VENUE IN THE COURTS SITTING IN TOKYO, JAPAN. YOU MUST WAIVE
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// ALL DEFENSES OF LACK OF PERSONAL JURISDICTION AND FORUM NON CONVENIENS.
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// PROCESS MAY BE SERVED ON EITHER PARTY IN THE MANNER AUTHORIZED BY APPLICABLE
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// 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 YOU HAVE
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// A CONFIRMATION THAT THIS SOFTWARE DOES NOT VIOLATE ANY CRIMINAL LAWS OR CIVIL
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// RIGHTS IN THAT PARTICULAR COUNTRY. USING THIS SOFTWARE IN OTHER COUNTRIES IS
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// COMPLETELY AT YOUR OWN RISK. THE SOFTETHER VPN PROJECT HAS DEVELOPED AND
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// DISTRIBUTED THIS SOFTWARE TO COMPLY ONLY WITH THE JAPANESE LAWS AND EXISTING
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// CIVIL RIGHTS INCLUDING PATENTS WHICH ARE SUBJECTS APPLY IN JAPAN. OTHER
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// COUNTRIES' LAWS OR CIVIL RIGHTS ARE NONE OF OUR CONCERNS NOR RESPONSIBILITIES.
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// WE HAVE NEVER INVESTIGATED ANY CRIMINAL REGULATIONS, CIVIL LAWS OR
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// INTELLECTUAL PROPERTY RIGHTS INCLUDING PATENTS IN ANY OF OTHER 200+ COUNTRIES
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// AND TERRITORIES. BY NATURE, THERE ARE 200+ REGIONS IN THE WORLD, WITH
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// DIFFERENT LAWS. IT IS IMPOSSIBLE TO VERIFY EVERY COUNTRIES' LAWS, REGULATIONS
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// AND CIVIL RIGHTS TO MAKE THE SOFTWARE COMPLY WITH ALL COUNTRIES' LAWS BY THE
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// PROJECT. EVEN IF YOU WILL BE SUED BY A PRIVATE ENTITY OR BE DAMAGED BY A
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// PUBLIC SERVANT IN YOUR COUNTRY, THE DEVELOPERS OF THIS SOFTWARE WILL NEVER BE
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// LIABLE TO RECOVER OR COMPENSATE SUCH DAMAGES, CRIMINAL OR CIVIL
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// RESPONSIBILITIES. NOTE THAT THIS LINE IS NOT LICENSE RESTRICTION BUT JUST A
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// STATEMENT FOR WARNING AND DISCLAIMER.
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//
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// READ AND UNDERSTAND THE 'WARNING.TXT' FILE BEFORE USING THIS SOFTWARE.
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// SOME SOFTWARE PROGRAMS FROM THIRD PARTIES ARE INCLUDED ON THIS SOFTWARE WITH
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// LICENSE CONDITIONS WHICH ARE DESCRIBED ON THE 'THIRD_PARTY.TXT' FILE.
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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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// NullLan.c
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// Virtual LAN card device driver for testing
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#include "CedarPch.h"
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static UCHAR null_lan_broadcast_address[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
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// Get the packet adapter
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PACKET_ADAPTER *NullGetPacketAdapter()
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{
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PACKET_ADAPTER *pa = NewPacketAdapter(NullPaInit, NullPaGetCancel, NullPaGetNextPacket,
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NullPaPutPacket, NullPaFree);
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return pa;
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}
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// Generate MAC address
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void NullGenerateMacAddress(UCHAR *mac, UINT id, UINT seq)
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{
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UCHAR hash[SHA1_SIZE];
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char name[MAX_SIZE];
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BUF *b;
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// Validate arguments
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if (mac == NULL)
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{
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return;
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}
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b = NewBuf();
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WriteBufInt(b, id);
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WriteBufInt(b, seq);
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GetMachineHostName(name, sizeof(name));
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#ifdef OS_WIN32
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WriteBufInt(b, MsGetCurrentProcessId());
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#endif // OS_WIN32
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WriteBufStr(b, name);
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HashSha1(hash, b->Buf, b->Size);
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FreeBuf(b);
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Copy(mac, hash, 6);
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mac[0] = 0x7E;
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}
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// Packet generation thread
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void NullPacketGenerateThread(THREAD *t, void *param)
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{
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NULL_LAN *n = (NULL_LAN *)param;
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UINT64 end_tick = Tick64() + (UINT64)(60 * 1000);
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UINT seq = 0;
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// Validate arguments
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if (t == NULL || param == NULL)
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{
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return;
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}
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while (true)
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{
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/*if (Tick64() >= end_tick)
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{
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break;
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}*/
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Wait(n->Event, Rand32() % 1500);
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if (n->Halt)
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{
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break;
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}
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LockQueue(n->PacketQueue);
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{
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UCHAR *data;
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BLOCK *b;
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UINT size = Rand32() % 1500 + 14;
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UCHAR dst_mac[6];
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NullGenerateMacAddress(n->MacAddr, n->Id, seq);
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//NullGenerateMacAddress(dst_mac, n->Id + 1, 0);
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//StrToMac(dst_mac, "00-1B-21-A9-47-E6");
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StrToMac(dst_mac, "00-AC-7A-EF-83-FD");
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data = Malloc(size);
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Copy(data, null_lan_broadcast_address, 6);
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//Copy(data, dst_mac, 6);
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Copy(data + 6, n->MacAddr, 6);
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b = NewBlock(data, size, 0);
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InsertQueue(n->PacketQueue, b);
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}
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UnlockQueue(n->PacketQueue);
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Cancel(n->Cancel);
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//seq++;
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}
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}
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// Initialize the packet adapter
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bool NullPaInit(SESSION *s)
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{
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NULL_LAN *n;
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static UINT id_seed = 0;
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// Validate arguments
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if (s == NULL)
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{
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return false;
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}
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id_seed++;
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n = ZeroMalloc(sizeof(NULL_LAN));
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n->Id = id_seed;
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s->PacketAdapter->Param = (void *)n;
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n->Cancel = NewCancel();
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n->PacketQueue = NewQueue();
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n->Event = NewEvent();
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NullGenerateMacAddress(n->MacAddr, n->Id, 0);
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n->PacketGeneratorThread = NewThread(NullPacketGenerateThread, n);
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return true;
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}
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// Get the cancel object
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CANCEL *NullPaGetCancel(SESSION *s)
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{
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// Validate arguments
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NULL_LAN *n;
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if (s == NULL || (n = s->PacketAdapter->Param) == NULL)
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{
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return NULL;
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}
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AddRef(n->Cancel->ref);
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return n->Cancel;
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}
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// Get the next packet
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UINT NullPaGetNextPacket(SESSION *s, void **data)
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{
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UINT size = 0;
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// Validate arguments
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NULL_LAN *n;
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if (s == NULL || (n = s->PacketAdapter->Param) == NULL)
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{
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return INFINITE;
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}
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LockQueue(n->PacketQueue);
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{
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BLOCK *b = GetNext(n->PacketQueue);
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if (b != NULL)
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{
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*data = b->Buf;
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size = b->Size;
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Free(b);
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}
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}
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UnlockQueue(n->PacketQueue);
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return size;
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}
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// Write the packet
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bool NullPaPutPacket(SESSION *s, void *data, UINT size)
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{
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// Validate arguments
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if (s == NULL)
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{
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return false;
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}
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if (data == NULL)
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{
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return true;
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}
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// Packet ignored
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Free(data);
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return true;
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}
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// Release
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void NullPaFree(SESSION *s)
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{
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// Validate arguments
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NULL_LAN *n;
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BLOCK *b;
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if (s == NULL || (n = s->PacketAdapter->Param) == NULL)
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{
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return;
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}
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n->Halt = true;
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Set(n->Event);
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WaitThread(n->PacketGeneratorThread, INFINITE);
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ReleaseThread(n->PacketGeneratorThread);
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LockQueue(n->PacketQueue);
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{
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while (b = GetNext(n->PacketQueue))
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{
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FreeBlock(b);
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}
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}
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UnlockQueue(n->PacketQueue);
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ReleaseQueue(n->PacketQueue);
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ReleaseCancel(n->Cancel);
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ReleaseEvent(n->Event);
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s->PacketAdapter->Param = NULL;
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Free(n);
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}
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