1 files changed, 371 insertions, 0 deletions

diff --git a/OpenSim/Framework/Util.cs b/OpenSim/Framework/Util.cs
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+/*
+* Copyright (c) Contributors, http://opensimulator.org/
+* See CONTRIBUTORS.TXT for a full list of copyright holders.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above copyright
+*       notice, this list of conditions and the following disclaimer in the
+*       documentation and/or other materials provided with the distribution.
+*     * Neither the name of the OpenSim Project nor the
+*       names of its contributors may be used to endorse or promote products
+*       derived from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS AND ANY
+* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+* 
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.IO;
+using System.Net;
+using System.Net.Sockets;
+using System.Security.Cryptography;
+using System.Text;
+using libsecondlife;
+using Nini.Config;
+
+namespace OpenSim.Framework
+{
+    public class Util
+    {
+        private static Random randomClass = new Random();
+        private static uint nextXferID = 5000;
+        private static object XferLock = new object();
+        private static Dictionary<LLUUID, string> capsURLS = new Dictionary<LLUUID, string>();
+
+
+        public static ulong UIntsToLong(uint X, uint Y)
+        {
+            return Helpers.UIntsToLong(X, Y);
+        }
+
+        public static Random RandomClass
+        {
+            get { return randomClass; }
+        }
+
+        public static uint GetNextXferID()
+        {
+            uint id = 0;
+            lock (XferLock)
+            {
+                id = nextXferID;
+                nextXferID++;
+            }
+            return id;
+        }
+
+        public Util()
+        {
+        }
+
+        public static string GetFileName(string file)
+        {
+            // Return just the filename on UNIX platforms
+            // TODO: this should be customisable with a prefix, but that's something to do later.
+            if (Environment.OSVersion.Platform == PlatformID.Unix)
+            {
+                return file;
+            }
+
+            // Return %APPDATA%/OpenSim/file for 2K/XP/NT/2K3/VISTA
+            // TODO: Switch this to System.Enviroment.SpecialFolders.ApplicationData
+            if (Environment.OSVersion.Platform == PlatformID.Win32NT)
+            {
+                if (!Directory.Exists("%APPDATA%\\OpenSim\\"))
+                {
+                    Directory.CreateDirectory("%APPDATA%\\OpenSim");
+                }
+
+                return "%APPDATA%\\OpenSim\\" + file;
+            }
+
+            // Catch all - covers older windows versions
+            // (but those probably wont work anyway)
+            return file;
+        }
+
+        public static bool IsEnvironmentSupported(ref string reason)
+        {
+            // Must have .NET 2.0 (Generics / libsl)
+            if (Environment.Version.Major < 2)
+            {
+                reason = ".NET 1.0/1.1 lacks components that is used by OpenSim";
+                return false;
+            }
+
+            // Windows 95/98/ME are unsupported
+            if (Environment.OSVersion.Platform == PlatformID.Win32Windows &&
+                Environment.OSVersion.Platform != PlatformID.Win32NT)
+            {
+                reason = "Windows 95/98/ME will not run OpenSim";
+                return false;
+            }
+
+            // Windows 2000 / Pre-SP2 XP
+            if (Environment.OSVersion.Version.Major == 5 && (
+                                                                Environment.OSVersion.Version.Minor == 0))
+            {
+                reason = "Please update to Windows XP Service Pack 2 or Server2003";
+                return false;
+            }
+
+            return true;
+        }
+
+        public static int UnixTimeSinceEpoch()
+        {
+            TimeSpan t = (DateTime.UtcNow - new DateTime(1970, 1, 1));
+            int timestamp = (int) t.TotalSeconds;
+            return timestamp;
+        }
+
+        public static string Md5Hash(string pass)
+        {
+            MD5 md5 = MD5CryptoServiceProvider.Create();
+            byte[] dataMd5 = md5.ComputeHash(Encoding.Default.GetBytes(pass));
+            StringBuilder sb = new StringBuilder();
+            for (int i = 0; i < dataMd5.Length; i++)
+                sb.AppendFormat("{0:x2}", dataMd5[i]);
+            return sb.ToString();
+        }
+
+        public static string GetRandomCapsPath()
+        {
+            LLUUID caps = LLUUID.Random();
+            string capsPath = caps.ToStringHyphenated();
+            capsPath = capsPath.Remove(capsPath.Length - 4, 4);
+            return capsPath;
+        }
+
+        public static int fast_distance2d(int x, int y)
+        {
+            x = Math.Abs(x);
+            y = Math.Abs(y);
+
+            int min = Math.Min(x, y);
+
+            return (x + y - (min >> 1) - (min >> 2) + (min >> 4));
+        }
+
+        public static string FieldToString(byte[] bytes)
+        {
+            return FieldToString(bytes, String.Empty);
+        }
+
+        /// <summary>
+        /// Convert a variable length field (byte array) to a string, with a
+        /// field name prepended to each line of the output
+        /// </summary>
+        /// <remarks>If the byte array has unprintable characters in it, a 
+        /// hex dump will be put in the string instead</remarks>
+        /// <param name="bytes">The byte array to convert to a string</param>
+        /// <param name="fieldName">A field name to prepend to each line of output</param>
+        /// <returns>An ASCII string or a string containing a hex dump, minus 
+        /// the null terminator</returns>
+        public static string FieldToString(byte[] bytes, string fieldName)
+        {
+            // Check for a common case
+            if (bytes.Length == 0) return String.Empty;
+
+            StringBuilder output = new StringBuilder();
+            bool printable = true;
+
+            for (int i = 0; i < bytes.Length; ++i)
+            {
+                // Check if there are any unprintable characters in the array
+                if ((bytes[i] < 0x20 || bytes[i] > 0x7E) && bytes[i] != 0x09
+                    && bytes[i] != 0x0D && bytes[i] != 0x0A && bytes[i] != 0x00)
+                {
+                    printable = false;
+                    break;
+                }
+            }
+
+            if (printable)
+            {
+                if (fieldName.Length > 0)
+                {
+                    output.Append(fieldName);
+                    output.Append(": ");
+                }
+
+                if (bytes[bytes.Length - 1] == 0x00)
+                    output.Append(UTF8Encoding.UTF8.GetString(bytes, 0, bytes.Length - 1));
+                else
+                    output.Append(UTF8Encoding.UTF8.GetString(bytes));
+            }
+            else
+            {
+                for (int i = 0; i < bytes.Length; i += 16)
+                {
+                    if (i != 0)
+                        output.Append(Environment.NewLine);
+                    if (fieldName.Length > 0)
+                    {
+                        output.Append(fieldName);
+                        output.Append(": ");
+                    }
+
+                    for (int j = 0; j < 16; j++)
+                    {
+                        if ((i + j) < bytes.Length)
+                            output.Append(String.Format("{0:X2} ", bytes[i + j]));
+                        else
+                            output.Append("   ");
+                    }
+
+                    for (int j = 0; j < 16 && (i + j) < bytes.Length; j++)
+                    {
+                        if (bytes[i + j] >= 0x20 && bytes[i + j] < 0x7E)
+                            output.Append((char) bytes[i + j]);
+                        else
+                            output.Append(".");
+                    }
+                }
+            }
+
+            return output.ToString();
+        }
+
+        /// <summary>
+        /// Returns a IP address from a specified DNS, favouring IPv4 addresses.
+        /// </summary>
+        /// <param name="dnsAddress">DNS Hostname</param>
+        /// <returns>An IP address, or null</returns>
+        public static IPAddress GetHostFromDNS(string dnsAddress)
+        {
+            // Is it already a valid IP? No need to look it up.
+            IPAddress ipa;
+            if (IPAddress.TryParse(dnsAddress, out ipa))
+                return ipa;
+
+            // Not an IP, lookup required
+            IPAddress[] hosts = Dns.GetHostEntry(dnsAddress).AddressList;
+
+            foreach (IPAddress host in hosts)
+            {
+                if (host.AddressFamily == AddressFamily.InterNetwork)
+                {
+                    return host;
+                }
+            }
+
+            if (hosts.Length > 0)
+                return hosts[0];
+
+            return null;
+        }
+
+        public static IPAddress GetLocalHost()
+        {
+            string dnsAddress = "localhost";
+
+            IPAddress[] hosts = Dns.GetHostEntry(dnsAddress).AddressList;
+
+            foreach (IPAddress host in hosts)
+            {
+                if (!IPAddress.IsLoopback(host) && host.AddressFamily == AddressFamily.InterNetwork)
+                {
+                    return host;
+                }
+            }
+
+            if (hosts.Length > 0)
+                return hosts[0];
+
+            return null;
+        }
+
+        //
+        // directory locations
+        //
+
+        public static string homeDir()
+        {
+            string temp;
+//            string personal=(Environment.GetFolderPath(Environment.SpecialFolder.Personal));
+//            temp = Path.Combine(personal,".OpenSim");
+            temp = ".";
+            return temp;
+        }
+
+        public static string configDir()
+        {
+            string temp;
+            temp = ".";
+            return temp;
+        }
+
+        public static string dataDir()
+        {
+            string temp;
+            temp = ".";
+            return temp;
+        }
+
+        public static string logDir()
+        {
+            string temp;
+            temp = ".";
+            return temp;
+        }
+
+        public static string GetCapsURL(LLUUID userID)
+        {
+            if (capsURLS.ContainsKey(userID))
+            {
+                return capsURLS[userID];
+            }
+            return "";
+        }
+
+        public static void SetCapsURL(LLUUID userID, string url)
+        {
+            if (capsURLS.ContainsKey(userID))
+            {
+                capsURLS[userID] = url;
+            }
+            else
+            {
+                capsURLS.Add(userID, url);
+            }
+        }
+
+        // Nini (config) related Methods
+        public static IConfigSource ConvertDataRowToXMLConfig(DataRow row, string fileName)
+        {
+            if (!File.Exists(fileName))
+            {
+                //create new file
+            }
+            XmlConfigSource config = new XmlConfigSource(fileName);
+            AddDataRowToConfig(config, row);
+            config.Save();
+
+            return config;
+        }
+
+        public static void AddDataRowToConfig(IConfigSource config, DataRow row)
+        {
+            config.Configs.Add((string) row[0]);
+            for (int i = 0; i < row.Table.Columns.Count; i++)
+            {
+                config.Configs[(string) row[0]].Set(row.Table.Columns[i].ColumnName, row[i]);
+            }
+        }
+    }
+}
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