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HostsManager.clsCoreFunctions.cs
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HostsManager.clsCoreFunctions.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using HostsManager.Settings;
using System.Security.Principal;
using System.Net;
using System.Security.AccessControl;
using System.Windows.Forms;
using System.Diagnostics;
using System.ServiceProcess;
using System.Net.NetworkInformation;
using System.Management;
using System.IO;
namespace HostsManager
{
public static class clsCoreFunctions
{
//The update process
public static void updateHostsFile(object f)
{
bool err = false;
Thread start = null;
try
{
/*
clsUtilitys.Dialogs.dlgOptions o = new clsUtilitys.Dialogs.dlgOptions();
o.frm = (frmCore)f;
o.txt = "Updating hosts file...";
start = new Thread(new ParameterizedThreadStart(clsUtilitys.Dialogs.showDialog));
start.Start(o);*/
/* if (clsSettingsData.urls.Count == 0 && clsSettingsData.UseCustomBlacklist && !clsSettingsData.isHidden)
{
frmDialog d = new frmDialog();
d.action = "Your personal hosts file is empty.";
d.showButton = true;
d.ShowDialog();
err = true;
}*/
if(true)
{
//Get name of admin group
SecurityIdentifier id = new SecurityIdentifier("S-1-5-32-544");
string adminGroupName = id.Translate(typeof(NTAccount)).Value;
if (!clsSettingsData.isHidden && !err)
{
clsUtilitys.Dialogs.dlgOptions o1 = new clsUtilitys.Dialogs.dlgOptions();
o1.frm = (frmCore)f;
o1.txt = "Updating hosts file(s)...";
start = new Thread(new ParameterizedThreadStart(clsUtilitys.Dialogs.showDialog));
start.Start(o1);
}
String fileText = "";
//Read hosts files from web
if (clsSettingsData.UseHostsFileBlacklist)
{
fileText += clsUtilitys.Downloader.DownloadString("https://hosts-file.net/download/hosts.txt");
fileText += clsUtilitys.Downloader.DownloadString("https://hosts-file.net/hphosts-partial.txt");
}
if (clsSettingsData.UseStevensBlacklist)
{
fileText += clsUtilitys.Downloader.DownloadString(
"https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts");
if (clsSettingsData.showFakeNews)
fileText += clsUtilitys.Downloader.DownloadString(
"https://raw.githubusercontent.com/StevenBlack/hosts/master/extensions/fakenews/hosts");
if (clsSettingsData.showGambling)
fileText += clsUtilitys.Downloader.DownloadString(
"https://raw.githubusercontent.com/StevenBlack/hosts/master/extensions/gambling/hosts");
if (clsSettingsData.showPorn)
{
fileText += clsUtilitys.Downloader.DownloadString(
"https://raw.githubusercontent.com/StevenBlack/hosts/master/extensions/porn/clefspeare13/hosts");
fileText += clsUtilitys.Downloader.DownloadString(
"https://raw.githubusercontent.com/StevenBlack/hosts/master/extensions/porn/sinfonietta/hosts");
}
if (clsSettingsData.showSocial)
fileText += clsUtilitys.Downloader.DownloadString(
"https://raw.githubusercontent.com/StevenBlack/hosts/master/extensions/social/hosts");
}
if (clsSettingsData.UseCustomBlacklist)
{
foreach (String u in clsSettingsData.urls)
fileText += "\r\n" + clsUtilitys.Downloader.DownloadString(u);
}
if (!clsSettingsData.isHidden)
{
if (start != null)
{
clsUtilitys.Dialogs.closeDialog();
start.Abort();
}
clsUtilitys.Dialogs.dlgOptions o2 = new clsUtilitys.Dialogs.dlgOptions();
o2.frm = (frmCore)f;
o2.txt = "Replacing IP's";
start = new Thread(new ParameterizedThreadStart(clsUtilitys.Dialogs.showDialog));
start.Start(o2);
}
//IP Overwrite
if (clsSettingsData.replaceMethod == clsSettingsData.mIPReplaceMethod.KEEP_LOCALHOST)
clsSettingsData.ipTo = clsSettingsData.ipFrom;
else if (clsSettingsData.replaceMethod == clsSettingsData.mIPReplaceMethod.SET_CUSTOM)
{
clsSettingsData.ipTo = clsSettingsData.replaceIP;
}
else
{
clsSettingsData.ipTo = clsBrandingData.DefaultBlockPage;
clsSettingsData.ipTo = Dns.GetHostAddresses(clsSettingsData.ipTo)[0].ToString();
}
if (clsSettingsData.replaceMethod != clsSettingsData.mIPReplaceMethod.KEEP_LOCALHOST)
{
fileText = fileText.Replace("0.0.0.0", clsSettingsData.ipTo);
fileText = fileText.Replace("127.0.0.1", clsSettingsData.ipTo);
fileText = fileText.Replace("::1", clsSettingsData.ipTo);
fileText = fileText.Replace("0\t", clsSettingsData.ipTo + "\t");
}
foreach (String host in clsSettingsData.addHosts)
fileText += "\r\n" + clsSettingsData.ipTo + " " + host;
//CR/LF detection
fileText = fileText.Replace("\r", "");
fileText = fileText.Replace("\n", "\r\n");
//Write temp hosts file
System.IO.File.Delete(Path.GetTempPath()+"\\hosts.tmp");
System.IO.File.WriteAllText(Path.GetTempPath()+"\\hosts.tmp", fileText);
//Set permissions of hosts file to be writable by group admins
FileSecurity fs = clsUtilitys.HostsFile.setHostsFilePermissions();
//Copy hosts file to real hosts file
System.IO.File.Copy(Path.GetTempPath()+"\\hosts.tmp",
Environment.GetEnvironmentVariable("windir") + "\\system32\\drivers\\etc\\hosts", true);
System.IO.File.Delete(Path.GetTempPath()+"\\hosts.tmp");
//Reset permissions
clsUtilitys.HostsFile.resetHostsFilePermissions(fs);
}
if (start != null)
{
clsUtilitys.Dialogs.closeDialog();
start.Abort();
}
if (!clsSettingsData.isHidden && !err)
{
clsUtilitys.Dialogs.dlgOptions o1 = new clsUtilitys.Dialogs.dlgOptions();
o1.frm = (frmCore)f;
o1.txt = "Hosts file updated.";
o1.okbutton = true;
start = new Thread(new ParameterizedThreadStart(clsUtilitys.Dialogs.showDialog));
start.Start(o1);
}
clsUtilitys.executeNoWindow("ipconfig.exe", "/flushdns");
}
catch (Exception ex) //Hosts file update
{
if (start != null)
{
clsUtilitys.Dialogs.closeDialog();
start.Abort();
}
//generate error string
String add = "";
if (!clsSettingsData.isHidden)
if (clsUtilitys.Info.isAntivir())
{
frmNotifyAntivirus fr = new frmNotifyAntivirus();
fr.ShowDialog();
}
if (!clsSettingsData.isHidden)
MessageBox.Show("Error: " + add + ex.Message);
}
}
//Create Task for auto update
public static void doAutoUpdate()
{
//prepare ProcessStartInfo
ProcessStartInfo psi = new ProcessStartInfo();
psi.UseShellExecute = false;
psi.RedirectStandardOutput = true;
psi.RedirectStandardError = true;
psi.CreateNoWindow = true;
psi.FileName = "schtasks.exe";
String name = clsBrandingData.COMPANY + " " + clsBrandingData.PRODUCT;
if (clsSettingsData.autoUpdate)
{
//Create task using schtasks.exe
//FileSecurity fs=setHostsFilePermissions(); !!! 080417DH - muss evtl wieder reingemacht werden.
String Arguments = "/Create /tn \""+name+"\" /tr \"" +
System.Reflection.Assembly.GetEntryAssembly().Location +
" /auto\" /sc DAILY /RL HIGHEST /F";
Process p = clsUtilitys.executeNoWindow("schtasks.exe", Arguments);
}
else
{
//Delete task using schtasks.exe
clsUtilitys.executeNoWindow("schtasks.exe", "/Delete /tn "+name+" /F");
}
}
public static void disableDNSService(frmCore frm)
{
System.Threading.Thread start = null;
bool err = false;
clsUtilitys.Dialogs.dlgOptions o = new clsUtilitys.Dialogs.dlgOptions();
o.frm = (frmCore)frm;
o.txt = "Disabling DNS-Client Service...";
start = new Thread(new ParameterizedThreadStart(clsUtilitys.Dialogs.showDialog));
start.Start(o);
ServiceController _ServiceController = new ServiceController("dnscache");
if (!_ServiceController.ServiceHandle.IsInvalid)
{
try
{
_ServiceController.Stop();
_ServiceController.WaitForStatus(ServiceControllerStatus.Stopped,
TimeSpan.FromMilliseconds(10000));
}
catch (Exception)
{
err = true;
}
try
{
if (!err)
{
Process p = clsUtilitys.executeNoWindow("sc.exe", "config dnscache start=disabled");
p.WaitForExit();
clsSettingsData.DNServiceDisabled = true;
frm.setServiceButtonText("Enable DNS Service");
}
}
catch (Exception)
{
err = true;
}
}
if (start != null)
start.Abort();
if (!err)
{
clsUtilitys.Dialogs.dlgOptions o1 = new clsUtilitys.Dialogs.dlgOptions();
o1.frm = (frmCore)frm;
o1.txt = "DNS-Client service disabled.";
o1.okbutton = true;
start = new Thread(new ParameterizedThreadStart(clsUtilitys.Dialogs.showDialog));
start.Start(o1);
}
else
{
clsUtilitys.Dialogs.dlgOptions o1 = new clsUtilitys.Dialogs.dlgOptions();
o1.frm = (frmCore)frm;
o1.txt = "Erro disabling DNS-Client service. Please retry..";
o1.okbutton = true;
start = new Thread(new ParameterizedThreadStart(clsUtilitys.Dialogs.showDialog));
start.Start(o1);
}
}
public static void setDNS(String DNS)
{
foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
{
if ((nic.NetworkInterfaceType == NetworkInterfaceType.Ethernet) || (nic.NetworkInterfaceType == NetworkInterfaceType.Wireless80211)) //&& (nic.OperationalStatus == OperationalStatus.Up))
{
ManagementClass objMC = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection objMOC = objMC.GetInstances();
foreach (ManagementObject objMO in objMOC)
{
if ((bool)objMO["IPEnabled"])
{
try
{
ManagementBaseObject newDNS =
objMO.GetMethodParameters("SetDNSServerSearchOrder");
newDNS["DNSServerSearchOrder"] = DNS.Split(',');
ManagementBaseObject setDNS =
objMO.InvokeMethod("SetDNSServerSearchOrder", newDNS, null);
}
catch (Exception)
{
throw;
}
}
}
}
}
}
public static String[] getBackups()
{
String[] f = Directory.GetFiles((Environment.GetEnvironmentVariable("windir") + "\\system32\\drivers\\etc\\"));
String[] r = new String[f.Length];
int count = 0;
for (int i = 0; i < f.Length; i++)
{
if (f[i] != null)
{
if (f[i].Contains(clsBrandingData.PRODUCT + ".bak"))
{
r[count] = f[i];
count++;
}
}
}
return r;
}
}
}