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Introduction

My original project can be found here.

I've been trying for a while to come up with a .NET control that would handle VT100/ANSI formatting and connect to SSH2 servers.

I've been through the commercial ones and still haven't found one that suited me.

My last project was based on Granados SSH library (open source SSH .NET implementation) and AckTerm (open source partially completed VT100 control).

Background

This library is an attempt at creating a library based on the "Poderosa" project which can be found here.

Poderosa IMO is the best terminal emulator. It's open source, and is better than the commercial clients. Go check it out for yourself, it's worth it. You can find the original Poderosa CSV source there.

I tried for a couple of weeks to encapsulate components of Poderosa, but the code comments are all in Japanese and I couldn't find any good docs that described the source code. The developer community for Poderosa also appears to be all Japanese, so I felt pretty much on my own.

Using the Code

What I pretty much did here was encapsulate the entire Poderosa application into a library. Then I exposed certain elements so an application developer can simply drop the "Terminal Control.dll" into his/her app and have a control that acts like you would expect any .NET control to act.

This code was written using Visual Studio .NET 2005 Professional and requires .NET Framework 2.0.

Points of Interest

The Poderosa solution is made up of 5 projects:

1. Container - This is the actual Poderosa application
2. Terminal - A library providing Telnet capabilities as well as the Terminal Emulation
3. Common - Code that is shared between the Poderosa application and the Port Forwarding Tool
4. Granados - SSH library that supports just about every feature of SSH
5. Portforwarding - A standalone application (uses Terminal, Common, and Granados libraries) that provides SSH portforwarding functionality

First Step

What I've done with my library, was to change "Container" into a Library output, and implement a public class based on System.Windows.Forms.Control.

Second Step

The first time my class ("WalburySoftware.TerminalControl") is instanced, it runs Poderosa code:

GApp.Run(args); GApp._frame._multiPaneControl.InitUI(null, GApp.Options);
GEnv.InterThreadUIService.MainFrameHandle = GApp._frame.Handle; 

Poderosa has lots and lots and lots of static variables. Until I can get the time and motivation to go through them and make the appropriate changes, these variables will need to be initialized before you can use any of Poderosa's classes.

Third Step

If you look at the method Poderosa.ConnectionCommandTarget.Resize, you'll see the line:

if(GEnv.Connections.FindTag(_connection).ModalTerminalTask!=null) 
	return CommandResult.Denied 

This throws an exception. I took it out because it doesn't do anything for my library. I'm not sure what the ModalTerminalTask variable is used for. If you include that line, the terminal will not resize properly.

Final Step

Now we are free to create and use TerminalPanes as we need.

You'll see the steps in WalburySoftware.TerminalControl.Connect() that connect the TerminalPane to an SSH2 connection.

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Unable to connect to SSH session agohil 23:57 11 Oct '09   Sardaan, I need to replace existing Dart components (in one of our product) by some other open source terminal emulator. We come across Poderosa and went through its code base. I had a same experience with the code and their documentation that u faced. I googled for some components based on Poderosa and i found yours. I downloaded your demo project and made a build and ran it but i could not connect to the SSH terminal session. I have made chnages to the code to use port 57 for SSH instead of 22 in the code. No other changes were made. I have debugged the same and identified the spot where the issue happens. In fact MakeConnection() ensures that the Socket is opened and SSH session is enabled. But after that when Negotiate() is called , SSH session gets disconnected somehow. I have narrowed it town to observe that as soon as it returns from r.OpenShell() , SSH session gets disconnected. Please can you narrowed it down further or let me know the root cause of this ? Thanks in advance Ajay Sign In·View Thread·PermaLink How to get the information in the terminal into a strin Member 3382638 12:38 4 Sep '09   Hi There this looks cool I just have one question how can I grab the text out of the terminal and store it in a string If you could help would be great Many Thanks Sign In·View Thread·PermaLink 3.00/5 VT100 - PF1 to PF4 key Jean-Christophe GOFFIN 23:39 31 Aug '09   Hello, I want to use the terminal control and allow using of PF1 to PF4 key. (replaced by F1 to F4) I tried, but this is not working with the new terminal control. The previous version of terminal control was working fine with these keys, but, with the new version, this not working anymore. The old version was not supporting the cursor key, this is why I switched to the new one. Can anyone help me ? Thanks. Sign In·View Thread·PermaLink control graphic with terminal parabole 3:41 3 Aug '09   hello , i'm looking for only the graphic control for display terminal . What is the control wich you are using ??? For the VT100 protocol and other , it's me with my class . I need this for the personal application . I'm testing Richtextbox . It's very hard for this application . I have the problem with CHAR(32). Excuse for my english .... Lol Best regard .... Sign In·View Thread·PermaLink Run Command Without UI mahdavi 5:40 26 Jun '09   Hi Sardaan, How I can use your code for run some Command without GUI ? I need send some command to my Server, but I dont need show UI. I must send a string of my commands. Can you help me ? http://www.mahdavy.com Sign In·View Thread·PermaLink 1.00/5 How export content to file prcjunior 19:44 14 Jun '09   Hello, Great JOB. How extport the content in string or file. And please, how can change the port?? THX! Sign In·View Thread·PermaLink Read output from the terminal namalpk 11:03 10 Jun '09   This is a great app. If there anyway I could read the output in the terminal pane into a file? Thanks. NK Sign In·View Thread·PermaLink problem while drawing RightToLeft Chars [modified] Tamer Fahmy 0:57 26 Apr '09   hello, a great effort for this application ,but i met a problems while customizing application in encoding to arabic language but i succses to do it, but i met another problem it is "How to enable RightToLeft drawing into the Black drawing area" how to solve this case, can any one help me? i solve the arabic encoding by:- byte[] data = Encoding.Unicode.GetBytes(CurChar.ToString()); string chars = Encoding.GetEncoding("ISO-8859-6").GetString(data); Tamer Fahmy (Junior C-Sharp Developer) modified on Sunday, April 26, 2009 6:21 AM Sign In·View Thread·PermaLink VI error message. WMBWMB 8:21 5 Feb '09   When trying to attempt a vi edit session I will get the following error message that appears to be generated from vi : "screen too large for internal buffer". What seems strange is that this error will occur when the terminal control's screen is made larger or smaller prior to a vi edit. Any thoughts? I have tried changing the TERM environment variable as per one suggestion, that had no effect. Thanks, WMB Sign In·View Thread·PermaLink VI editor via this Terminal Control WMBWMB 4:31 5 Feb '09   Has anyone used the unix vi editor within this terminal control? I am getting mixed results. When the terminal window is resized sometimes the screen will just go blank when entering the vi editor. Other times I will get a buffer error. Also when returning from a vi edit the cursor will be completely off the screen (beyond where you can scroll to), so I have to type "clear" to regain the cursor within the control window. Are there some terminal commands that have to be run prior to entering vi? Are there some preferences that have to be set within vi? Thanks, WMB Sign In·View Thread·PermaLink NullReferenceException while running C-Sharp Example gvcrash 4:13 3 Feb '09   Hi,    I am getting the following expeption when I try run the C# sample in the new archive:    System.NullReferenceException: Object reference not set to an instance of an object.    at WalburySoftware.TerminalControl.SetPaneColors(Color TextColor, Color BackColor) in c:\Terminal_Control\Terminal Control\TerminalControl.cs:line 209    at C_Sharp_Usage_Eample.Form1.button1_Click(Object sender, EventArgs e) in c:\Terminal_Control\C-Sharp Usage Eample\Form1.cs:line 29 I think the ConnectionTag is not properly initialized. I am not sure why. Anyone having the same problem? Thanks Sign In·View Thread·PermaLink 2.00/5 Re: NullReferenceException while running C-Sharp Example jbeersm 7:46 10 Feb '09   Same problen connectionTag = null Sign In·View Thread·PermaLink 5.00/5 Re: NullReferenceException while running C-Sharp Example gvcrash 0:15 20 Feb '09   The reason , in my case, was that the connection failed, because the server required keyboard-interactive authentication (there is no message indicating connection timeout). It works fine now. Sign In·View Thread·PermaLink 5.00/5 Re: NullReferenceException while running C-Sharp Example PCBuilder 18:19 8 Mar '09   You say "It works fine now". I am having the same issue when trying to connect to an old Alpha server. What did you do to get it to work? Sign In·View Thread·PermaLink Font Scotty Couturier 10:31 21 Oct '08   This is great! How would I scale the font? Sign In·View Thread·PermaLink 1.00/5 Re: Font Sardaan Frostreaver 5:54 26 Dec '08   I ran into the same question, implemented it... and completely forgot I left it out of the public TerminalControl....... sorry anyway, if you get to it before I update the control, there's a dialog box in the Poderosa library that has options for changing font size, color, background color... hell they even LET YOU PUT A PICTURE IN THE BACKGROUND....... it's way cool and it's something else i need to update my library with Sign In·View Thread·PermaLink 5.00/5 Re: Font Sardaan Frostreaver 2:55 2 Jan '09   k, check the updates, I put in an example of how to modify the display (font, colors, etc). Refer to the "C# Usage Example" project Sign In·View Thread·PermaLink 5.00/5 VT100 or 3270 App to do some tests Manuel64 23:51 8 Jul '08   Hi, I've been working on similar (but closed) project some years ago I have some questions: - Are there any example or test applications (running on emulators or unix) to do some regression tests? how are you testing the library itself? - Would it be possible to port this project (or the core at least) in java? Thanx Sign In·View Thread·PermaLink 3.50/5 Re: VT100 or 3270 App to do some tests Sardaan Frostreaver 5:50 26 Dec '08   To answer your questions 1a.) no 1b.) I tested it on Sun Solaris servers 2.) knock yourself out Sign In·View Thread·PermaLink Ponderosa version 4.0.2 WMBWMB 7:37 12 Jun '08   How did you ever get any of it to work. It looks like the open source sight has had little activity since 2006. I downloaded the latest version found, which was apparently built for VisualStudio 2005. There are two solutions at the top directory. Both do not build with different issues. The Ponderosa_monolithic.sln appears to have several files missing, including an entire sub project (which I am not sure is needed). The other solution Ponderosa.sln has several build errors with obvious errors that would have made it impossible to build. For example, one object is trying to call private methods of another object. Even after fixing the basic errors all I got was exceptions being thrown. I could not find any help or manual to explain the startup commands for the "Executable" (which seems to be the only project in the solution that has an EXE). It seems to need parameters passed in, but what? Sorry, I am completely lost with this version. Any help out there? WMB Sign In·View Thread·PermaLink 2.00/5 Re: Ponderosa version 4.0.2 Sardaan Frostreaver 6:01 26 Dec '08   If I understand what you're asking... it's that you can't compile the Poderosa source you downloaded? and how I did it? i don't remember exactly but it wasn't a simple download->compile the Poderosa people are awesome for putting their project out there for the public. Regardless of how much trouble we have getting it up and running, I can allmost guarantee it's a hell of a lot cleaner than some of the "professional" clients. Hell, go download Putty and let me know how that works out anyway i'm deviating from your question... the answer is... i had to modify a lot of stuff. Poderosa doesn't lend itself well to integration (or i'm just not seeing the hooks) but it is very hackable..... so easy to chop and dice and make it act anyway you want to. the trick is getting a starting point 3 common things i've heard about............ -- make sure you have ALL the associated projects and that they're referenced correctly (through the namespaces, using statements, etc) -- get the culture locales straightened out (this won't stop it from compiling but you will get some runtime errors) -- i forgot the last one..... Sign In·View Thread·PermaLink 1.00/5 Wait for reply from Server code3005 8:33 30 May '08   Is there a better way to wait for a reply from the server? Thread.Sleep is not the most efficient as the server does not always reply in the same time. Is there something like WaitForText or something similar? Sign In·View Thread·PermaLink Re: Wait for reply from Server Kevin James 7:28 17 Sep '08   maybe rewrite the code to use asynchronous I/O Sign In·View Thread·PermaLink Re: Wait for reply from Server Sardaan Frostreaver 5:46 26 Dec '08   no, Thread.Sleep sucks horribly I'll dig around and post an update that has that extention. It seems to be the most glaring oversight on my part, because anyone wanting a TeminalControl damn sure wants a scripted dialog like the Expect language does. but to summarize 1.) yes there's a better way 2.) no it isn't easy 3.) i'll hook ya up, but don't wait up, it might be a few weeks Sign In·View Thread·PermaLink Re: Wait for reply from Server carlsiy 3:05 13 Sep '09   You could try placing your sequential command within a timer loop where in the timer adds its own delay. Cheers. Sign In·View Thread·PermaLink

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