Generating RDP file on the fly

Question

I want to create a web application similar to TS Web Access, where I can create rdp files on the fly for Remote Apps configured on the server. Any idea??

Teratogenic

Answer 1

We had to do this exact thing.

private void InvokeRDPSign(String fileName, String certificateThumbPrint)
{
    Process signingProcess = new Process();
    signingProcess.StartInfo.FileName = @"rdpsign.exe";

    String arguments = String.Format("/sha1 {0} {1}", certificateThumbPrint, fileName);
    signingProcess.StartInfo.Arguments = arguments;
    signingProcess.StartInfo.UseShellExecute = false;
    signingProcess.StartInfo.RedirectStandardOutput = true;
    signingProcess.StartInfo.WorkingDirectory = Environment.SystemDirectory;
    signingProcess.Start();

    String signingOutput = signingProcess.StandardOutput.ReadToEnd();
    signingProcess.WaitForExit();
    int exitCode = signingProcess.ExitCode;
    //TODO:  should we throw an error if the exitcode is not 0
}

Be aware that that the RDPSign.exe is different on each version of windows. You will find that an older version of the utility will ignore newer settings from the signature.

Stonecrop

I had to use an elevated account for the app pool identity to make this work. As other posts have suggested, I'm probably going to move this code to a service on the machine with elevated privileges rather than permanently changing the app pool identity. – Crapulous

Answer 2

well Having looked at a 'rdp' file this is the contents:

screen mode id:i:2
desktopwidth:i:1280
desktopheight:i:768
session bpp:i:32
winposstr:s:2,3,1430,104,2230,704
compression:i:1
keyboardhook:i:2
displayconnectionbar:i:1
disable wallpaper:i:1
disable full window drag:i:1
allow desktop composition:i:0
allow font smoothing:i:0
disable menu anims:i:1
disable themes:i:0
disable cursor setting:i:0
bitmapcachepersistenable:i:1
full address:s: [YOUR IP]
audiomode:i:0
redirectprinters:i:1
redirectcomports:i:0
redirectsmartcards:i:1
redirectclipboard:i:1
redirectposdevices:i:0
autoreconnection enabled:i:1
authentication level:i:0
prompt for credentials:i:0
negotiate security layer:i:1
remoteapplicationmode:i:0
alternate shell:s:
shell working directory:s:
gatewayhostname:s:
gatewayusagemethod:i:4
gatewaycredentialssource:i:4
gatewayprofileusagemethod:i:0
promptcredentialonce:i:1
drivestoredirect:s:

Just create that as a string, seems straightforward.

ps I have no idea what the 'winposstr' parameter is...

Entire

this is perfectly fine, but my remoteapps are digitally signed with a certificate, which adds 2 additional parameters in my rdp file: 1. signscope:s 2. signature:s How can I create values for these parameters, these are using SHA1 hash...??? – Teratogenic

I don't know whats going on with these certs. can't you create a valid 'remote application' RDP and then copy that sig? or is the sig different each time? – Entire

Signature is same everytime, but i hv to open diff. app on diff buttons, and signature depends on the remote app program name, so i hv to change the signature on the fly. Sample rdp file content: – Teratogenic

span monitors:i:1 prompt for credentials on client:i:1 remoteapplicationmode:i:1 server port:i:3389 allow font smoothing:i:1 promptcredentialonce:i:1 authentication level:i:0 gatewayusagemethod:i:2 gatewayprofileusagemethod:i:0 gatewaycredentialssource:i:0 full address:s:LUTRONTS1 alternate shell:s:||TSClient_TS2 remoteapplicationprogram:s:||TSClient_TS2 gatewayhostname:s: remoteapplicationname:s:TSClient_TS2 remoteapplicationcmdline:s: – Teratogenic

signscope:s:Full Address,Server Port,GatewayHostname,GatewayUsageMethod,GatewayProfileUsageMethod,GatewayCredentialsSource,PromptCredentialOnce,Alternate Shell,RemoteApplicationProgram,RemoteApplicationMode,RemoteApplicationName,RemoteApplicationCmdLine,Authentication Level,RedirectDrives,RedirectPrinters,RedirectCOMPorts,RedirectSmartCards,RedirectPOSDevices,RedirectClipboard,DevicesToRedirect,DrivesToRedirect – Teratogenic

signature:s:AQABAAEAAACVBAAAMIIEkQYJKoZIhvcNAQcCoIIEgjCCBH4CAQExCzAJBgUrDgMC GgUAMAsGCSqGSIb3DQEHAaCCAvowggL2MIIB3qADAgECAhCMel1Y/5YAjUXCeMhU Fzi8MA0GCSqGSIb3DQEBBQUAMCQxIjAgBgNVBAMTGWx1dHJvbnRzMS5nZ24ubmFn YXJyby5jb20wHhcNMDkxMTE5MDc0NTIyWhcNMTAxMTE4MDAwMDAwWjAkMSIwIAYD VQQDExlsdXRyb250czEuZ2duLm5hZ2Fycm8uY29tMIIBIjANBgkqhkiG9w0BAQEF AAOCAQ8AMIIBCgKCAQEAn+ExkAWD10vOi0TDOyZl9XGuh6Q7qSKVTzaumgUx1S88 H3KS8wLgO6eWThGKaFzLhPhO98G6RRbtxcdcSjeP+3RSQPNA8chbYZ5I3zhPQ8J3 D1d7fvdgWodL+ltvrnTMr0cxZWGR5xtCljwqcKhoUDHnPJQiU9g2WGhs7PqmPOFA – Teratogenic

QtFrHUo1hrHyawYWfqekNhVnWtyI0xxnM3rpnwile6LWJAPGPYolHc/qTV9NaLwq 7c3a4NfshM24UN7WUo/0I4pnHbwjjyUHWxCDOQPO5nRGGmVdFh2Jwn5F+P82qLUE TvT2vJJ0tRn/TEMXZEEMOztBEONN9QtKhaRI+2HJdwIDAQABoyQwIjALBgNVHQ8E BAMCBDAwEwYDVR0lBAwwCgYIKwYBBQUHAwEwDQYJKoZIhvcNAQEFBQADggEBAEDj cor3tOY/4JnwNuQxOWbdV2yIW/gITWsJXpkM6X+0XcFTKHtPjmthGphwxAniiw7D rgpBokzh/8tRNMIZDeQej+JkgYLKO4Q+fzBhvxz4qHQqYZlSVPwBhcjrPFK88ggo JqYh2JTAttC5V969YMOVYc//OAKLoVMravaHUmlRAC6NvkHiVV+HoeDZbAQwnQaa zNpMwy1A6Mre6hQI4NsCFOaZEeJwtTuvd8RgpIdzI3oNL5Vy2dfXj9dvSu8OtrPU r2Kk34gEhC6a/owFSQOc208WJfOvX0G1TFKl8Tyx6vcgqWfohlUNDAxxd68Fl22f – Teratogenic

R0EANq3XNPjp4aoyn74xggFfMIIBWwIBATA4MCQxIjAgBgNVBAMTGWx1dHJvbnRz MS5nZ24ubmFnYXJyby5jb20CEIx6XVj/lgCNRcJ4yFQXOLwwCQYFKw4DAhoFADAN BgkqhkiG9w0BAQEFAASCAQAsjUwyBxFpBHFTCFKJixLIZoOb2HK0/hu/vWNeIOfe fJ9OakxSzzHYYRZSrWKCbcl3Mp1/La1/D7L9vXlotPMB3qzeT5voczxLrY0J0Hly 08EALAYywbRki60brA2AKJ6Ri3ph3KUzD2aZQiV8kVZTJzqWPp20dCvL5Cl38qG6 I30ZtN1zadkgdg3vI0Ulh8IbfgNv9uQxvtGh9R55t8GRgTpexbGAx1r9ocKTSTW3 bFwds/l25ZKWrEiA1S+4r4J8QYLnoStVZcdOPBbp9z8CFfLxFoljA8pVVFqSQb51 PWV5+k2lqwBngp290Hoi6VL6HdXkA6eLYO8DqNuOJiFY – Teratogenic

winposstr might be the client window position and size (top left point, bottom right point, width and height). – Typecast

Yep, looks like it: tiredblogger.wordpress.com/2008/11/05/… – Typecast