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get Stdin/Stdout on running process?


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Is there way a to access the Stdin and Stdout of a process that is already running?

I'm trying to figure out a way to access this on a console application that is launched via a Citrix server command (and I cannot launch it any other way to my knowledge).

I'm hoping I could possibly pass this a process of a non-child window in somehow, but I can't get anything working.

Thanks!

-Chad

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Is there way a to access the Stdin and Stdout of a process that is already running?

I'm trying to figure out a way to access this on a console application that is launched via a Citrix server command (and I cannot launch it any other way to my knowledge).

I'm hoping I could possibly pass this a process of a non-child window in somehow, but I can't get anything working.

Thanks!

-Chad

I think the only way you can get the console handles when a process is running is by using the GetStartupInfo API call, but it only returns the console handles for the current process. However, if you are the author of the app running on the Citrix server, you can use pipes to redirect the input/output to your other app. Take a look at the CreatePipes demo in Auto3Lib for more info.
Auto3Lib: A library of over 1200 functions for AutoIt
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I think the only way you can get the console handles when a process is running is by using the GetStartupInfo API call, but it only returns the console handles for the current process. However, if you are the author of the app running on the Citrix server, you can use pipes to redirect the input/output to your other app. Take a look at the CreatePipes demo in Auto3Lib for more info.

I was searching through MSDN, and came arcoss something that looks to be what I need.

http://msdn2.microsoft.com/en-us/library/ms684969.aspx

I'm not so good with the Win32 API, so what do you think? Is using this a possibility?

Thanks,

-Chad

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i'm trying to play with handle, but it still need some improvements

it's really difficult, but it could be done

one solution is , like in the createpipe demo that i've created and that paulIA fixed, is to use the API createprocess

all of the solution seen on internet use this method

look on msdn for the child process

PS : if the application is run through Citrix, it's logical that it's not possible

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i'm trying to play with handle, but it still need some improvements

it's really difficult, but it could be done

one solution is , like in the createpipe demo that i've created and that paulIA fixed, is to use the API createprocess

all of the solution seen on internet use this method

look on msdn for the child process

PS : if the application is run through Citrix, it's logical that it's not possible

Any updates?

I'm no expert on Citrix, but it would seem that even if it's a remote application, data still must be passed into and out of said application. The console is displaying what is on the remote side, so logically there must be data on my computer if I am able to see it. I can only assume that since it is a console window, that data is held in some console buffer. The problem is trying to find that buffer.

Then again, I could be totally wrong about how this all works, as I don't have experience in this particular area.

Thanks for the input guys!

-Chad

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Any updates?

I'm no expert on Citrix, but it would seem that even if it's a remote application, data still must be passed into and out of said application. The console is displaying what is on the remote side, so logically there must be data on my computer if I am able to see it. I can only assume that since it is a console window, that data is held in some console buffer. The problem is trying to find that buffer.

Then again, I could be totally wrong about how this all works, as I don't have experience in this particular area.

Thanks for the input guys!

-Chad

Console buffer is held on the server, what you really see is nothing but an image. That's how I understand on these virtual sessions like Citrix, Terminal server, DameWare, and etc.

Edited by Joon
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Console buffer is held on the server, what you really see is nothing but an image. That's how I understand on these virtual sessions like Citrix, Terminal server, DameWare, and etc.

I'd have to disagree with this, because if I turn on "quick edit" on the specified console, I can then select text and copy it into the clipboard (which is actually how I am pulling the data out at the moment, but it is incredible slow, and not at all elegant).

I'd imagine that stdin gets sent to the server, the stdout comes back from the server, through the citrix client, and gets piped into the console. Therefore there would hypothetically be a buffer somewhere out there. And of course, I really have no idea how to test this hypothesis :)

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I'd have to disagree with this, because if I turn on "quick edit" on the specified console, I can then select text and copy it into the clipboard (which is actually how I am pulling the data out at the moment, but it is incredible slow, and not at all elegant).

This is because clipboard is share through the session. Example, I can RDP to server copy text then paste onto my client notepad.

I'd imagine that stdin gets sent to the server, the stdout comes back from the server, through the citrix client, and gets piped into the console. Therefore there would hypothetically be a buffer somewhere out there. And of course, I really have no idea how to test this hypothesis :)

Back to the your main question. I really don't think you can attached to the Citrix console application. Stdin is not sent to server, just your keystrokes.. I think.

Edited by Joon
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  • 6 years later...

Because this is the first post that shows up when goggling "site:autoitscript.com attach STDout running process", how would someone call GetStartupInfo to attach to a process's STDout? Something running locally, not on a server or anything like that.

Edited by corgano

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Why would you resurrect a thread that's 6 years dead to post something only slightly related to it? Start a new thread with a LOT more information, and don't revive dead topics with no answers.

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