Web based X11 access Post: 302366082

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Operating Systems Linux Web based X11 access Post 302366082 by Smiling Dragon on Wednesday 28th of October 2009 07:18:58 PM

Old

10-28-2009

Registered User

I would guess that you will want a bit of cgi or php code on your webserver.
It will need to read the address of the requester (that info is readily available to both cgi and php scripts as a predefined variable).
You can then either do some clever port probing to find which display number, or ask for that on a web form, or just assume display number 0.
Once you have those, you can determine which X11 display to send the X11 application to (eg yourwebsurfingcompter.address.domain:0). You'd then either need to authorise the webserver on your web browsing computer or have it allow any X11 connections (quite dangerous). Another option would be to have the user supply their X11 MIT cookie via a web form but that feels like overkill.

Once you have these bits of information, it's just a matter of having your cgi or php run a local application (as the webserver user most likely) with the display (usually either the DISPLAY environment variable or the -display parameter) set to be the display of your web browsing client (determined near the start). Remember to background the application so your script doesn't hang.

Smiling Dragon

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LEARN ABOUT HPUX

xserver

Xserver(1)						      General Commands Manual							Xserver(1)

NAME

       X - X Window System display server dispatcher

SYNOPSIS

       X [ option ...]

DESCRIPTION
:
       Hewlett-Packard	supports  two  X  servers on HP-UX platforms, the Xhp X server which supports HP VISUALIZE graphics devices and the Xf86 X
       server which supports all other graphics devices.  These X servers are delivered as /usr/bin/X11/Xhp and /usr/bin/X11/Xf86.

       The X dispatcher determines which X server to launch based on the available graphics devices.  The control file /etc/X11/Xstart can provide
       additional  guidance to the X dispatcher.  The control file allows the user to specify which X server to start for given display connection
       numbers. The only X servers supported by the X dispatcher are Xhp, Xf86 and Xvfb.  If no Xstart	file  exists,  the  dispatcher	loads  the
       appropriate  X server for the graphics device in the system.  HP-UX does not deliver the /etc/X11/Xstart file.  This file can be created by
       using the SAM/SMH utility.

OPTIONS

       If the X dispatcher is invoked with no arguments, the display connection is assumed to be :0.  The X dispatcher checks for display  connec-
       tion  options  and, if found, uses that display connection number when it checks the Xstart file.  All other options are passed on to the X
       server when it is started and it is the X server's responsibility to validate these options.  Not all options may be supported  on  both  X
       servers; refer to Xhp(1) and Xf86(1) to verify supported options for each X server.

RETURN VALUE

       None

Xstart EXAMPLES
       The control file syntax is the X server to start followed by the display connection number.  Valid entries take the form of:

       Xhp :0				       Start the Xhp X server on display connection 0

       Xf86 :10 			       Start the Xf86 X server on display 10

       /usr/bin/X11/Xhp :5		       Start the Xhp X server on display connection 5

       /usr/bin/X11/Xvfb :7		       Start the X Virtual Framebuffer server on display connection 7

FILES

       /etc/X11/Xstart			       Dispatcher control file.

       /var/X11/Xserver/logs/Xstartup.N.log    X dispatcher log file for display N.

SEE ALSO

       X(1), Xhp(1), Xf86(1)

STANDARDS CONFORMANCE

       See the appropriate section in Xhp(1) or Xf86(1).

																	Xserver(1)