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Full Discussion: Web based X11 access
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
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.
 

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pax11publish(1) 					      General Commands Manual						   pax11publish(1)

NAME
pax11publish - PulseAudio X11 Credential Utility SYNOPSIS
pax11publish -h pax11publish [options] [-d] pax11publish [options] -e pax11publish [options] -i pax11publish [options] -r DESCRIPTION
The pax11publish utility can be used to dump or manipulate the PulseAudio server credentials that can be stored as properties on the X11 root window. Please note that the loadable module module-x11-publish exports the same information directly from the PulseAudio sound server, and should in most cases be used in preference over this tool. Use the following command to dump the raw PulseAudio-specific data that is stored in your X11 root window: xprop -root | grep ^PULSE_ OPTIONS
-h Show help. -d Read the PulseAudio server credentials currently set on the X11 root window and dump them in a human readable form. This reads the PULSE_SERVER, PULSE_SINK, PULSE_SOURCE and PULSE_COOKIE properties. -i Similar to -d, however dumps them in a Bourne shell compatible format so they may be used together with the eval shell command to set the $PULSE_SERVER, $PULSE_SINK, $PULSE_SOURCE environment variables. Also reads the authentication cookie from the root window and stores it in ~/.config/pulse/cookie. -e Export the currently locally used sound server, sink, source configuration to the X11 root window. This takes the data from the $PULSE_SERVER, $PULSE_SINK, $PULSE_SOURCE environment variables and combines them with the data from ~/.config/pulse/client.conf (or /etc/pulse/client.conf if that file does not exist). If specific options are passed on the command line (-S, -O, -I, -c, see below), they take precedence. Also uploads the local authentication cookie ~/.config/pulse/cookie to the X11 server. -r Removes the configured PulseAudio configuration from the X11 root window. -D DISPLAY Connect to the specified X11 display, instead of the default one configured in $DISPLAY. -S SERVER Only valid for -e: export the specified PulseAudio server as default to the X11 display instead of the one configured via local con- figuration. -O SINK Only valid for -e: export the specified sink as default sink to the X11 display instead of the one configured via local configura- tion. -I SOURCE Only valid for -e: export the specified source as default to the X11 display instead of the one configured via local configuration. -c FILE Only valid for -e: export the PulseAudio authentication cookie stored in the specified file to the X11 display instead of the one stored in ~/.config/pulse/cookie. AUTHORS
The PulseAudio Developers <pulseaudio-discuss (at) lists (dot) freedesktop (dot) org>; PulseAudio is available from http://pulseaudio.org/ SEE ALSO
pulseaudio(1), xprop(1) Manuals User pax11publish(1)
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