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118 lines
4.0 KiB
118 lines
4.0 KiB
// **********************************************************************************
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// CassiniDev - http://cassinidev.codeplex.com
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//
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// Copyright (c) 2010 Sky Sanders. All rights reserved.
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//
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// This source code is subject to terms and conditions of the Microsoft Public
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// License (Ms-PL). A copy of the license can be found in the license.txt file
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// included in this distribution.
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//
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// You must not remove this notice, or any other, from this software.
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//
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// **********************************************************************************
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#region
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using System;
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using System.Diagnostics;
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using System.IO;
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using System.Reflection;
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using System.Text.RegularExpressions;
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#endregion
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namespace CassiniDev
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{
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public static class HostsFile
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{
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/// <summary>
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///
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/// </summary>
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/// <param name="ipAddress"></param>
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/// <param name="hostname"></param>
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/// <returns></returns>
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public static int AddHostEntry(string ipAddress, string hostname)
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{
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try
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{
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SetHostsEntry(true, ipAddress, hostname);
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return 0;
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}
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// ReSharper disable EmptyGeneralCatchClause
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catch
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// ReSharper restore EmptyGeneralCatchClause
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{
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}
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string executablePath = Assembly.GetExecutingAssembly().Location;
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return StartElevated(executablePath, string.Format("Hostsfile /ah+ /h:{0} /i:{1}", hostname, ipAddress));
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="ipAddress"></param>
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/// <param name="hostname"></param>
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/// <returns></returns>
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public static int RemoveHostEntry(string ipAddress, string hostname)
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{
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try
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{
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SetHostsEntry(false, ipAddress, hostname);
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return 0;
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}
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// ReSharper disable EmptyGeneralCatchClause
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catch
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// ReSharper restore EmptyGeneralCatchClause
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{
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}
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string executablePath = Assembly.GetExecutingAssembly().Location;
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return StartElevated(executablePath, string.Format("Hostsfile /ah- /h:{0} /i:{1}", hostname, ipAddress));
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}
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private static void SetHostsEntry(bool addHost, string ipAddress, string hostname)
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{
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// limitation: while windows allows mulitple entries for a single host, we currently allow only one
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string windir = Environment.GetEnvironmentVariable("SystemRoot") ?? @"c:\windows";
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string hostsFilePath = Path.Combine(windir, @"system32\drivers\etc\hosts");
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string hostsFileContent = File.ReadAllText(hostsFilePath);
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hostsFileContent = Regex.Replace(hostsFileContent,
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string.Format(@"\r\n^\s*[\d\w\.:]+\s{0}\s#\sadded\sby\scassini$",
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hostname), "", RegexOptions.Multiline);
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if (addHost)
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{
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hostsFileContent += string.Format("\r\n{0} {1} # added by cassini", ipAddress, hostname);
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}
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File.WriteAllText(hostsFilePath, hostsFileContent);
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}
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private static int StartElevated(string filename, string args)
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{
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ProcessStartInfo startInfo = new ProcessStartInfo
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{
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UseShellExecute = true,
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WorkingDirectory = Environment.CurrentDirectory,
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FileName = filename,
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Arguments = args,
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Verb = "runas"
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};
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try
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{
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Process p = Process.Start(startInfo);
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if (p != null)
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{
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p.WaitForExit();
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return p.ExitCode;
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}
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return -2;
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}
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catch
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{
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return -2;
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}
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}
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}
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} |