diff options
| author | dnobori <da.git@softether.co.jp> | 2014-01-07 00:40:52 +0400 |
|---|---|---|
| committer | dnobori <da.git@softether.co.jp> | 2014-01-07 00:40:52 +0400 |
| commit | d1bc9c57c5adf2162f27e072a4d05f99dd55963a (patch) | |
| tree | ba80fa819bb6c0aa6c435ab69016b9cd0ada52f7 /src/BuildUtil/CoreUtil/GZip.cs | |
| parent | 52e6ca39c13d5dcfd9522bfac9bff4e43552d7f8 (diff) | |
v4.03-9411-rtm
Diffstat (limited to 'src/BuildUtil/CoreUtil/GZip.cs')
| -rw-r--r-- | src/BuildUtil/CoreUtil/GZip.cs | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/src/BuildUtil/CoreUtil/GZip.cs b/src/BuildUtil/CoreUtil/GZip.cs new file mode 100644 index 00000000..c6eae41d --- /dev/null +++ b/src/BuildUtil/CoreUtil/GZip.cs @@ -0,0 +1,233 @@ +// CoreUtil
+//
+// Copyright (C) 2012-2014 Daiyuu Nobori. All Rights Reserved.
+// Copyright (C) 2012-2014 SoftEther VPN Project at University of Tsukuba. All Rights Reserved.
+// Comments: Tetsuo Sugiyama, Ph.D.
+//
+//
+// 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 version 2
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+// THE LICENSE AGREEMENT IS ATTACHED ON THE SOURCE-CODE PACKAGE
+// AS "LICENSE.TXT" FILE. READ THE TEXT FILE IN ADVANCE TO USE THE SOFTWARE.
+//
+//
+// THIS SOFTWARE IS DEVELOPED IN JAPAN, AND DISTRIBUTED FROM JAPAN,
+// UNDER JAPANESE LAWS. YOU MUST AGREE IN ADVANCE TO USE, COPY, MODIFY,
+// MERGE, PUBLISH, DISTRIBUTE, SUBLICENSE, AND/OR SELL COPIES OF THIS
+// SOFTWARE, THAT ANY JURIDICAL DISPUTES WHICH ARE CONCERNED TO THIS
+// SOFTWARE OR ITS CONTENTS, AGAINST US (SOFTETHER PROJECT, SOFTETHER
+// CORPORATION, DAIYUU NOBORI OR OTHER SUPPLIERS), OR ANY JURIDICAL
+// DISPUTES AGAINST US WHICH ARE CAUSED BY ANY KIND OF USING, COPYING,
+// MODIFYING, MERGING, PUBLISHING, DISTRIBUTING, SUBLICENSING, AND/OR
+// SELLING COPIES OF THIS SOFTWARE SHALL BE REGARDED AS BE CONSTRUED AND
+// CONTROLLED BY JAPANESE LAWS, AND YOU MUST FURTHER CONSENT TO
+// EXCLUSIVE JURISDICTION AND VENUE IN THE COURTS SITTING IN TOKYO,
+// JAPAN. YOU MUST WAIVE ALL DEFENSES OF LACK OF PERSONAL JURISDICTION
+// AND FORUM NON CONVENIENS. PROCESS MAY BE SERVED ON EITHER PARTY IN
+// THE MANNER AUTHORIZED BY APPLICABLE LAW OR COURT RULE.
+//
+// USE ONLY IN JAPAN. DO NOT USE IT IN OTHER COUNTRIES. IMPORTING THIS
+// SOFTWARE INTO OTHER COUNTRIES IS AT YOUR OWN RISK. SOME COUNTRIES
+// PROHIBIT ENCRYPTED COMMUNICATIONS. USING THIS SOFTWARE IN OTHER
+// COUNTRIES MIGHT BE RESTRICTED.
+//
+//
+// DEAR SECURITY EXPERTS
+// ---------------------
+//
+// If you find a bug or a security vulnerability please kindly inform us
+// about the problem immediately so that we can fix the security problem
+// to protect a lot of users around the world as soon as possible.
+//
+// Our e-mail address for security reports is:
+// softether-vpn-security [at] softether.org
+//
+// Please note that the above e-mail address is not a technical support
+// inquiry address. If you need technical assistance, please visit
+// http://www.softether.org/ and ask your question on the users forum.
+//
+// Thank you for your cooperation.
+
+
+using System;
+using System.Threading;
+using System.Data;
+using System.Data.Sql;
+using System.Data.SqlClient;
+using System.Data.SqlTypes;
+using System.Text;
+using System.Configuration;
+using System.Collections;
+using System.Collections.Generic;
+using System.Security.Cryptography;
+using System.Web;
+using System.Web.Security;
+using System.Web.UI;
+using System.Web.UI.WebControls;
+using System.Web.UI.WebControls.WebParts;
+using System.Web.UI.HtmlControls;
+using System.IO;
+using System.IO.Compression;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.Drawing.Drawing2D;
+using System.Runtime.InteropServices;
+using CoreUtil.Internal;
+
+namespace CoreUtil
+{
+ [StructLayout(LayoutKind.Sequential, Pack = 1)]
+ public struct GZipHeader
+ {
+ public byte ID1, ID2, CM, FLG;
+ public uint MTIME;
+ public byte XFL, OS;
+ }
+
+ [StructLayout(LayoutKind.Sequential, Pack = 1)]
+ public struct GZipFooter
+ {
+ public uint CRC32;
+ public uint ISIZE;
+ }
+
+ public static class GZipUtil
+ {
+ public static byte[] Decompress(byte[] gzip)
+ {
+ using (GZipStream stream = new GZipStream(new MemoryStream(gzip), CompressionMode.Decompress))
+ {
+ const int size = 4096;
+ byte[] buffer = new byte[size];
+ using (MemoryStream memory = new MemoryStream())
+ {
+ int count = 0;
+ do
+ {
+ count = stream.Read(buffer, 0, size);
+ if (count > 0)
+ {
+ memory.Write(buffer, 0, count);
+ }
+ }
+ while (count > 0);
+ return memory.ToArray();
+ }
+ }
+ }
+ }
+
+ public class GZipPacker
+ {
+ Fifo fifo;
+ ZStream zs;
+ long currentSize;
+ uint crc32;
+ bool finished;
+
+ public bool Finished
+ {
+ get { return finished; }
+ }
+
+ public Fifo GeneratedData
+ {
+ get
+ {
+ return this.fifo;
+ }
+ }
+
+ public GZipPacker()
+ {
+ fifo = new Fifo();
+
+ zs = new ZStream();
+ zs.deflateInit(-1, -15);
+
+ this.currentSize = 0;
+ this.crc32 = 0xffffffff;
+ this.finished = false;
+
+ GZipHeader h = new GZipHeader();
+ h.ID1 = 0x1f;
+ h.ID2 = 0x8b;
+ h.FLG = 0;
+ h.MTIME = Util.DateTimeToUnixTime(DateTime.Now.ToUniversalTime());
+ h.XFL = 0;
+ h.OS = 3;
+ h.CM = 8;
+
+ fifo.Write(Util.StructToByte(h));
+ }
+
+ public void Write(byte[] data, int pos, int len, bool finish)
+ {
+ byte[] srcData = Util.ExtractByteArray(data, pos, len);
+ byte[] dstData = new byte[srcData.Length * 2 + 100];
+
+ if (this.finished)
+ {
+ throw new ApplicationException("already finished");
+ }
+
+ zs.next_in = srcData;
+ zs.avail_in = srcData.Length;
+ zs.next_in_index = 0;
+
+ zs.next_out = dstData;
+ zs.avail_out = dstData.Length;
+ zs.next_out_index = 0;
+
+ if (finish)
+ {
+ zs.deflate(zlibConst.Z_FINISH);
+ }
+ else
+ {
+ zs.deflate(zlibConst.Z_SYNC_FLUSH);
+ }
+
+ fifo.Write(dstData, 0, dstData.Length - zs.avail_out);
+
+ currentSize += len;
+
+ this.crc32 = ZipUtil.Crc32Next(data, pos, len, this.crc32);
+
+ if (finish)
+ {
+ this.finished = true;
+ this.crc32 = ~this.crc32;
+
+ GZipFooter f = new GZipFooter();
+ f.CRC32 = this.crc32;
+ f.ISIZE = (uint)(this.currentSize % 0x100000000);
+
+ fifo.Write(Util.StructToByte(f));
+ }
+ }
+ }
+}
+
+// Developed by SoftEther VPN Project at University of Tsukuba in Japan.
+// Department of Computer Science has dozens of overly-enthusiastic geeks.
+// Join us: http://www.tsukuba.ac.jp/english/admission/
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