[Tutorial]Editing hosts file in C# (blocking them from sites)

tarafından **EMO** Perş. Mayıs 19, 2011 10:37 pm

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C#

Kod:: using System.IO;

Kod:: string system = Environment.GetFolderPath(Environment.SpecialFolder.System); //^ Above creates the string system, and stores the system folder path in it string hosts = system + "\\" + "drivers" + "\\" + "etc" + "\\" + "hosts"; //^ In VB.NET you would only need one slash, but in C# you need two // ^ basically this takes the string system and adds the path to it StreamWriter writer = new StreamWriter(hosts); // ^ Creates a new StreamWriter with the path of our hosts string writer.Write("##Hosts file edit"); //^ Writes ##Hosts file edit in our hosts file writer.Write(Environment.NewLine); //^ Creates a new line, important so text is not all in 1 line writer.Write("127.0.0.1 www.google.ca"); //^ Writes 127.0.0.1 www.google.ca in our hosts file, redirecting anybody who //^ goes to google to 127.0.0.1 which is localhost writer.Write(Environment.NewLine); //^ See above writer.Write("127.0.0.1 google.ca"); //^ This is important, because the user cannot go to www.google.ca, but he will //^ be able to go to google.ca!! writer.Write(Environment.NewLine); //^ See above writer.Write("127.0.0.1 209.85.135.99"); //^ Okay, 209.85.135.99 is the IP address of google. //^ if you redirect google.ca and www.google.ca then the user will still //^ be able to go to 209.85.135.99, which is google so we want to block that //^ Now, if the user tries to go to www.google.ca he will be redirected to //^ localhost, if he goes to google.ca he will be redirected to localhost //^ and finally, if he is smart and pings google then he will //^ get the address 209.85.135.99, but when he tries to go to that he will be //^ redirected to localhost bwahahahahah writer.Dispose(); //^ This is important, it closes our streamwriter and saves the data, please //^ remember writer.Write will clear everything in the hosts file if the style //^ is not append, but I will not get into that now. //^ if we did not have our newline this is what our hosts file would look like //^ ##Hosts file edit127.0.0.1 www.google.ca127.0.0.1 google.ca127.0.0.1 209.85.135.99 //^ but our hosts file has to look like the following in order to be read //^ ##Hosts file edit //^ 127.0.0.1 www.google.ca //^ 127.0.0.1 google.ca //^ 127.0.0.1 209.85.135.99 //^ I hope you enjoyed my tutorial, feel free to ask for more in C# or VB.NET!

Credits to scriptkiddy !!
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