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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LEARN ABOUT DEBIAN
bb-findhost.cgi
BB-FINDHOST.CGI(1) General Commands Manual BB-FINDHOST.CGI(1)
NAME
bb-findhost.cgi - Xymon CGI script to find hosts
SYNOPSIS
bb-findhost.cgi?host=REGEX
DESCRIPTION
bb-findhost.cgi is invoked as a CGI script via the bb-findhost.sh CGI wrapper.
bb-findhost.cgi is passed a QUERY_STRING environment variable with the "host=REGEX" parameter. The REGEX is a Posix regular expression (see
regex(7) ) describing the hostnames to look for. A trailing wildcard is assumed on all hostnames - e.g. requesting the hostname "www" will
match any host whose name begins with "www".
It then produces a single web page, listing all of the hosts that matched any of the hostnames, with links to the Xymon webpages where they
are located.
The output page lists hosts in the order they appear in the bb-hosts(5) file.
A sample web page implementing the search facility is included with bbgen, you access it via the URL /bb/help/bb-findhost.html.
OPTIONS
--env=FILENAME
Loads the environment from FILENAME before executing the CGI.
FILES
$BBHOME/web/findhost_header
HTML header file for the generated web page
$BBHOME/web/findhost_footer
HTML footer file for the generated web page
$BBHOME/web/findhost_form
Query form displayed when bb-findhost.cgi is called with no parameters.
ENVIRONMENT VARIABLES
BBHOSTS
bb-findhost.cgi uses the BBHOSTS environment variable to find the bb-hosts file listing all known hosts and their page locations.
BBHOME Used to locate the template files for the generated web pages.
SEE ALSO
bbgen(1), bb-hosts(5), hobbitserver.cfg(5)
Xymon Version 4.2.3: 4 Feb 2009 BB-FINDHOST.CGI(1)