1a74510ac9
* Parcel overlays are tracked per region * New sim connections reuse the original circuit code * Teleporting is functional git-svn-id: http://libopenmetaverse.googlecode.com/svn/trunk@32 52acb1d6-8a22-11de-b505-999d5b087335
303 lines
10 KiB
C#
303 lines
10 KiB
C#
/*
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* Copyright (c) 2006, Second Life Reverse Engineering Team
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* All rights reserved.
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*
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* - Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* - Neither the name of the Second Life Reverse Engineering Team nor the names
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* of its contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Collections;
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using System.Threading;
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namespace libsecondlife
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{
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/// <summary>
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/// Main class to expose Second Life functionality to clients. All of the
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/// classes are accessible through this class.
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/// </summary>
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public class SecondLife
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{
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public ProtocolManager Protocol;
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public NetworkManager Network;
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public ParcelManager Parcels;
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public MainAvatar Avatar;
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public ArrayList Regions;
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public Mutex RegionsMutex;
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public Region CurrentRegion;
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public byte[] CurrentParcelOverlay;
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public uint ParcelOverlaysReceived;
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public SecondLife(string keywordFile, string mapFile)
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{
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Protocol = new ProtocolManager(keywordFile, mapFile);
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Network = new NetworkManager(this, Protocol);
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Parcels = new ParcelManager(this);
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Avatar = new MainAvatar(this);
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Regions = new ArrayList();
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RegionsMutex = new Mutex(false, "RegionsMutex");
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CurrentRegion = null;
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CurrentParcelOverlay = new byte[4096];
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ParcelOverlaysReceived = 0;
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}
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public void Tick()
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{
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System.Threading.Thread.Sleep(0);
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}
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public Region FindRegion(string name)
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{
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RegionsMutex.WaitOne();
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foreach (Region region in Regions)
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{
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if (region.Name == name)
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{
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RegionsMutex.ReleaseMutex();
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return region;
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}
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}
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RegionsMutex.ReleaseMutex();
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return null;
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}
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}
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/// <summary>
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/// Static helper functions and global variables
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/// </summary>
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public class Helpers
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{
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public readonly static string VERSION = "libsecondlife-cs 0.0.4";
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public const byte MSG_APPENDED_ACKS = 0x10;
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public const byte MSG_RESENT = 0x20;
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public const byte MSG_RELIABLE = 0x40;
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public const byte MSG_ZEROCODED = 0x80;
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public const ushort MSG_FREQ_HIGH = 0x0000;
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public const ushort MSG_FREQ_MED = 0xFF00;
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public const ushort MSG_FREQ_LOW = 0xFFFF;
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public enum LogLevel
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{
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Info,
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Warning,
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Error
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};
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private readonly static uint[] crcLookup = new uint[] {
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0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
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0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
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0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
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0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
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0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
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0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
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0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
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0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
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0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
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0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
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0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
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0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
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0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
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0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
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0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
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0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
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0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
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0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
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0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
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0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
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0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
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0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
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0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
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0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
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0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
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0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
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0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
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0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
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0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
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0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
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0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
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0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
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0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
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0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
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0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
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0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
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0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
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0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
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0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
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0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
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0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
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0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
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0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
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0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
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0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
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0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
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0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
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0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
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0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
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0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
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0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
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0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
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0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
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0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
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0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
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0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
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0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
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0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
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0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
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0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
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0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
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0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
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0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
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0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D};
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/// <summary>
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/// Send a log message to the debugging output system
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/// </summary>
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/// <param name="message">The log message</param>
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/// <param name="level">From the LogLevel enum, either Info, Warning, or Error</param>
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public static void Log(string message, LogLevel level)
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{
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Console.WriteLine(level.ToString() + ": " + message);
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}
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/// <summary>
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/// Decode a zerocoded byte array. Used to decompress packets marked
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/// with the zerocoded flag. Any time a zero is encountered, the
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/// next byte is a count of how many zeroes to expand. One zero is
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/// encoded with 0x00 0x01, two zeroes is 0x00 0x02, three zeroes is
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/// 0x00 0x03, etc. The first four bytes are copied directly to the
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/// output buffer.
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/// </summary>
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/// <param name="src">The byte array to decode</param>
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/// <param name="srclen">The length of the byte array to decode</param>
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/// <param name="dest">The output byte array to decode to</param>
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/// <returns>The length of the output buffer</returns>
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public static int ZeroDecode(byte[] src, int srclen, byte[] dest)
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{
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uint zerolen = 0;
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try
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{
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Array.Copy(src, 0, dest, 0, 4);
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zerolen += 4;
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for (uint i = zerolen; i < srclen; i++)
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{
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if (src[i] == 0x00)
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{
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for (byte j = 0; j < src[i + 1]; j++)
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{
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dest[zerolen++] = 0x00;
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}
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i++;
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}
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else
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{
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dest[zerolen++] = src[i];
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}
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}
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}
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catch (Exception e)
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{
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Helpers.Log(e.ToString(), Helpers.LogLevel.Error);
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}
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return (int)zerolen;
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}
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/// <summary>
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/// Encode a byte array with zerocoding. Used to compress packets marked
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/// with the zerocoded flag. Any zeroes in the array are compressed down
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/// to a single zero byte followed by a count of how many zeroes to expand
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/// out. A single zero becomes 0x00 0x01, two zeroes becomes 0x00 0x02,
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/// three zeroes becomes 0x00 0x03, etc. The first four bytes are copied
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/// directly to the output buffer.
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/// </summary>
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/// <param name="src">The byte array to encode</param>
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/// <param name="srclen">The length of the byte array to encode</param>
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/// <param name="dest">The output byte array to encode to</param>
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/// <returns>The length of the output buffer</returns>
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public static int ZeroEncode(byte[] src, int srclen, byte[] dest)
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{
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uint zerolen = 0;
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byte zerocount = 0;
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Array.Copy(src, 0, dest, 0, 4);
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zerolen += 4;
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for (uint i = zerolen; i < srclen; i++)
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{
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if (src[i] == 0x00)
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{
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zerocount++;
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if (zerocount == 0)
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{
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dest[zerolen++] = 0x00;
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dest[zerolen++] = 0xff;
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zerocount++;
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}
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}
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else
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{
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if (zerocount != 0)
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{
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dest[zerolen++] = 0x00;
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dest[zerolen++] = (byte)zerocount;
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zerocount = 0;
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}
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dest[zerolen++] = src[i];
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}
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}
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if (zerocount != 0)
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{
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dest[zerolen++] = 0x00;
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dest[zerolen++] = (byte)zerocount;
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}
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return (int)zerolen;
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}
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/// <summary>
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/// Get the CRC-32 value for a byte array
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/// </summary>
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/// <param name="byteArray">The byte array to calculate the crc32 value for</param>
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/// <returns>The CRC-32 checksum</returns>
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public static uint CRC(byte[] byteArray)
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{
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uint CRC = 0x04C11DB7;
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for(int i = 0; i < byteArray.Length; i++)
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{
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CRC = (CRC >> 8) ^ crcLookup[(CRC & 0xFF) ^ byteArray[i]];
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}
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return Convert.ToUInt32(CRC ^ 0x04C11DB7);
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}
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}
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}
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