C#

Updated Windows Sudo

Recently I updated my Windows sudo program and added a command for Super Conduit, this is what I call some tweaks that you can make to a Windows Vista+ system. This allows someone to copy sudo.exe to a systems, system32 folder; then after running “sudo cmd” you can run “sudo /write” so add ls, ifconfig, and superc as a option in the command line.

Superc has options of enable, disable, and show. Making it easy to run. ūüôā

Newest build is always here https://github.com/daberkow/win_sudo/raw/master/sudo/sudo/bin/Release/sudo.exe

Windows Sudo

I am back at RPI, finishing up my degree. Recently I have been working on hour tracking software for several departments at RPI.

Recently I have run into a minor annoyance where I am in the command line in Windows and need to elevate a command or program so that I can do a administrative task. (Such as moving a file to the system32 folder), the normal solution is to right click command line short cut and “Run as Administrator”. While that works its not fast,¬†I’m¬†sure there are other solutions out there, but I wanted to quickly build on in .Net. I did this a while ago for Vista and called it elev, but never saved it and since I am trying to make the transition between Windows and Linux easier I called it sudo.

All you do is put this in your %windir%\system32\ folder, and then at the command line type “sudo cmd” or whatever¬†command¬†you want. Commands like “dir” are actually part of cmd not a¬†separate¬†file called so “sudo dir” wont show anything, it will output the .Net error.

Link to exe: https://github.com/daberkow/win_sudo/blob/master/sudo/sudo/bin/Release/sudo.exe

Link to project: https://github.com/daberkow/win_sudo

Quick Compare

I wrote a quick little program to solve a problem for me. If you have two algorithms in webpages and want to benchmark them to see the difference, the program will work for you. You add the the below code to a PHP page, or do he same thing in other languages, then the app will run as many times as you tell it to and find the result in time. To lower the time it takes to get a result, you can up the thread count. Averages are not returned till all threads return information.

Start of PHP Page:
$time = microtime(TRUE);
End of page:
echo "seconds " . (microtime(TRUE) - $time);


Download:
https://github.com/daberkow/QuickCompare/blob/master/WebTest/bin/Release/WebTest.exe
Git:
https://github.com/daberkow/QuickCompare/

OpenAFS @RPI Client

Recently I was told ‚ÄúI can‚Äôt remember anyone getting OpenAFS to work on their own‚ÄĚ, by a staffer at my school. I took it on myself then to figure out how to get this working for students. And in the end I wrote an app that will automatically download and install the AFS client, then configure drives for you. This was an experiment in threading and using WPF instead of Windows Forms.

First the app goes and downloads the OpenAFS client, if it is a 64 bit machine it grabs the 32 bit tools first then the client. While downloading and installing these things it connects via SSH to a school server to get the location of the user’s home folder as well as verify the credentials given.

Once installation is complete the program runs ‚Äėklog‚Äô, this goes to the AFS server and requests tokens in the cluster using the credentials given earlier. Once we are past the installing point all these actions need to be run on the campus network. When the program starts it tries to ping a couple internal servers, if it can hit more than half of them in under 75 milliseconds then it considers itself on campus; if it thinks it‚Äôs off campus, then it notifies the user. One small problem with the first release is sometimes this system gets confused by vpn taking slightly longer.

Now that we have working token the system recommends drive letters that are not in use as well as AFS spaces to mount including the users folder and ‚Äėdept‚Äô to start. The configure button will activate these drives, they are not set to persistent at this time.

Below is the github link, as well as the direct exe link:

Github: https://github.com/daberkow/RPI_OpenAFS

EXE: https://github.com/daberkow/RPI_OpenAFS/blob/master/OpenAFS%20Installer%20WPF/bin/Release/OpenAFS%20Installer%20WPF.exe

C#/.Net SSH Framework

I needed a SSH framework for a program I am writing for my school. There are quite a few out there for .Net but I ended up going with the one from¬†http://sshnet.codeplex.com. It requires .Net 3.5 or 4.0, but its ease of use makes this not a problem. Below is a example of code using the pre-built binary for .Net 3.5, this code connects to a SSH server, then runs a command and stores the result in a string called ‘temp_holding’.

Renci.SshNet.SshClient MysshClient = new Renci.SshNet.SshClient(server, username, password); //these are varibles of strings
try{
MysshClient.Connect();
}catch{
//Something in here failed
return;
}
Renci.SshNet.SshCommand MyRanCommand = MysshClient.RunCommand(“pwd”);
lock (locker){
string temp_holding = MyRanCommand.Result;
}

IPv6

As IPv6 starts to roll out more and more, and Windows to update more and more, it may be time to turn IPv6 back on your computer. I wanted to put a reminder out that the IPv6 Cleaner also has a tool built in to change the IPv6 setting of the machine. After changing the setting reboot and Windows will take the new setting. IPv6 Activator is the same code that runs in the 6to4 Cleaner, just as a standalone app.

The following options are avaible:

  • Enable IPv6 – Windows Default
  • Disable IPv6 except critical components – Use if card problem persists
  • Disable native IPv6 interfaces
  • Disable all tunnel IPv6 interfaces
  • Disable all IPv6 interfaces except for the IPv6 loopback interface

Download:

https://github.com/daberkow/daberkow.github.io/tree/master/6to4CardCleaner

Download:

https://github.com/daberkow/daberkow.github.io/tree/master/IPv6Activator

Enstall Project

I am working on a project called Enstall with a partner for RCOS @ RPI, it’s¬†available¬†at enstall.wordpress.com, the goal is to make a package management system. One may say “but Dan there are like 10¬†available¬†and one or two are already open source…” That is true but¬†most¬†of them are aimed at IT personel, and controlling all the computers in a¬†corporation, this is just for a student to¬†install¬†and get software from their school on their PERSONAL computer. That’s the dream.

6to4 Card Cleaner Github!

Here it is! The source code (all be it not great) for 6to4 card cleaner¬†up on github. This program has become less useful recently because my school recently implemented IPv6¬†across¬†the network, and that has seemed to fixed the problem, along with new images. Anyway have fun with it, build it out, add to it…

 

https://github.com/daberkow/6to4-Card-Cleaner

PHP/JS and C# Encryption

Here is some code from a project I have been working on and then shelved. A C# (mono) project creates a RSA public/private key pair, then gives the public side to a MySQL database. The private side is saved to the hard drive for later. Then PHP¬†dynamically¬†adds the currently active key public¬†portion¬†into javascript, which encrypts the users input, and saves it to MySQL. Then the C# application can get the keys it has saved in a good place, and decrypt the data in the database. Benefits of this include the web data is secured from the client to the server, and even if somehow someone steals your database off your webserver, they dont have the encryption keys to take it away. This system also has a way to¬†deactivate¬†a old key and move to a new one, if more code was put into it someone could revoke a old key and migrate all the data using it to a new key, but that¬†wasn’t¬†implemented. I thought this would be a cool project and I learned a lot about RSA public private keys, a lot of languages handle the keys differently; some take it in hex, some do it differently, some call the parts one thing, some call them other names. The javascript portion is based mostly off this library (link). JQuery is used for ease.

Feel free to give feed back or use this, open source fun.

https://github.com/daberkow/PHP_PublicKeyDemo

Update

Hello Internet, I am back at school; along with working on some new and exciting things. https://github.com/daberkow is going to be my new GitHub place where I put up fun and exciting code, as well as add older things I have worked on and not released code for. Below I will list a couple projects and their state:

Javascript/C# SSL: I am slowly working on putting up open source code of the Javascript/C# SSL code

6to4 Card Cleaner: There was a error in the server side version library, that was fixed and clients should be able to update to newest version of 1.63

Duplicate Image Thing: I havent done much with this, I will be adding it to github for anyway to play with

New Project! Jukebox: I am working on a Jukebox from scratch, it will be based on raspberrypi.org computer. Designed as follows using EL lighting.