[Jetty-support] Specifying environment variables that should be passed to a CGI script

[Craig L. C. <cc...@mq...>]

To resolve the issue I'm having with my perl script (see the recent =
thread about using gethostbyname in a CGI), I'm going to add a way to =
allow a user to alter the environment that the CGI servlet creates when =
it executes a CGI script.  My plan is to search the system properties =
(via System.getProperties()) for properties that are named using a =
specific convention.  For instance, I was thinking of allowing the user =
to specify the variable they want passed like this:

java -Djetty.cgi-env.SYSTEMROOT=3D%SYSTEMROOT% -jar start.jar

Then I would modify org/mortbay/servlet/CGI.java to look for system =
properties that have the "jetty.cgi-env" prefix and add the last part of =
the prefix (e.g. SYSTEMROOT) as an environment variable to the =
environment that is created by              =
"Runtime.getRuntime().exec(execCmd, env.getEnvArray())".

Does this sound reasonable?  I'll be happy to send a patch to the list =
as I'd like to see this implemented as a standard feature of Jetty.  =
Also, I'd like to cache these values somewhere so that I don't have to =
iterate over the list every time a script is executed.  Would it be =
appropriate to do that in the constructor for CGI?  Or would somewhere =
else be more appropriate?  I'm not 100% comfortable with the code yet =
(just started looking at it on Monday ;-) ), so any pointers would be =
much appreciated.

Cheers,
Craig
--
Craig L. Ching
Chief Product Architect
IBM Certified Specialist, MQSeries
IBM Certified Developer, MQSeries
MQSoftware, Inc.
(952) 345-8720
www.mqsoftware.com=20
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