249 lines
7.6 KiB
C#
249 lines
7.6 KiB
C#
// CoreUtil
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//
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// Copyright (C) 2012-2014 Daiyuu Nobori. All Rights Reserved.
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// Copyright (C) 2012-2014 SoftEther VPN Project at University of Tsukuba. All Rights Reserved.
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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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using System;
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using System.Threading;
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using System.Data;
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using System.Data.Sql;
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using System.Data.SqlClient;
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using System.Data.SqlTypes;
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using System.Text;
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using System.Configuration;
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using System.Collections;
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using System.Collections.Generic;
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using System.Security.Cryptography;
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using System.Web;
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using System.Web.Security;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using System.Web.UI.WebControls.WebParts;
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using System.Web.UI.HtmlControls;
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using System.IO;
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using System.IO.Compression;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.Drawing.Drawing2D;
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using System.Runtime.InteropServices;
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using CoreUtil.Internal;
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namespace CoreUtil
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{
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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public struct GZipHeader
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{
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public byte ID1, ID2, CM, FLG;
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public uint MTIME;
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public byte XFL, OS;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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public struct GZipFooter
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{
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public uint CRC32;
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public uint ISIZE;
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}
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public static class GZipUtil
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{
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public static byte[] Decompress(byte[] gzip)
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{
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using (GZipStream stream = new GZipStream(new MemoryStream(gzip), CompressionMode.Decompress))
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{
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const int size = 4096;
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byte[] buffer = new byte[size];
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using (MemoryStream memory = new MemoryStream())
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{
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int count = 0;
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do
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{
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count = stream.Read(buffer, 0, size);
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if (count > 0)
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{
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memory.Write(buffer, 0, count);
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}
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}
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while (count > 0);
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return memory.ToArray();
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}
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}
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}
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}
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public class GZipPacker
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{
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Fifo fifo;
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ZStream zs;
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long currentSize;
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uint crc32;
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bool finished;
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public bool Finished
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{
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get { return finished; }
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}
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public Fifo GeneratedData
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{
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get
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{
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return this.fifo;
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}
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}
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public GZipPacker()
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{
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fifo = new Fifo();
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zs = new ZStream();
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zs.deflateInit(-1, -15);
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this.currentSize = 0;
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this.crc32 = 0xffffffff;
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this.finished = false;
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GZipHeader h = new GZipHeader();
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h.ID1 = 0x1f;
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h.ID2 = 0x8b;
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h.FLG = 0;
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h.MTIME = Util.DateTimeToUnixTime(DateTime.Now.ToUniversalTime());
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h.XFL = 0;
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h.OS = 3;
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h.CM = 8;
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fifo.Write(Util.StructToByte(h));
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}
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public void Write(byte[] data, int pos, int len, bool finish)
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{
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byte[] srcData = Util.ExtractByteArray(data, pos, len);
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byte[] dstData = new byte[srcData.Length * 2 + 100];
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if (this.finished)
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{
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throw new ApplicationException("already finished");
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}
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zs.next_in = srcData;
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zs.avail_in = srcData.Length;
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zs.next_in_index = 0;
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zs.next_out = dstData;
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zs.avail_out = dstData.Length;
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zs.next_out_index = 0;
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if (finish)
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{
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zs.deflate(zlibConst.Z_FINISH);
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}
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else
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{
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zs.deflate(zlibConst.Z_SYNC_FLUSH);
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}
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fifo.Write(dstData, 0, dstData.Length - zs.avail_out);
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currentSize += len;
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this.crc32 = ZipUtil.Crc32Next(data, pos, len, this.crc32);
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if (finish)
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{
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this.finished = true;
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this.crc32 = ~this.crc32;
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GZipFooter f = new GZipFooter();
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f.CRC32 = this.crc32;
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f.ISIZE = (uint)(this.currentSize % 0x100000000);
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fifo.Write(Util.StructToByte(f));
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}
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}
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}
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}
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