Re: mod_rewrite/4276: Rewriting with {prg:/my/rewriteprog} fails if URI contains %0A

[Cliff Woolley <JW...@wlu.edu>]

The following reply was made to PR mod_rewrite/4276; it has been noted by GNATS.

From: "Cliff Woolley" <JW...@wlu.edu>
To: <ma...@schlund.de>
Cc: <ap...@Apache.Org>
Subject: Re: mod_rewrite/4276: Rewriting with {prg:/my/rewriteprog}
	fails if URI contains %0A
Date: Mon, 26 Jul 1999 03:27:45 -0400

 I had this happen to me as well, and came up with a different
 work-around that I thought I'd mention here.  Use the built-in
 RewriteMap functions int:escape and int:unescape immediately before and
 after any external prg: type Map.  That way, you avoid this and several
 other potential special-character related problems, such as sloppy Perl
 code interpreting backquotes in URLs as shell commands, which is bad
 (not that I've ever had it happen to me ;-] ).  So you re-escape the
 URL, thereby translating the carriage return back to %0A and the URL
 becomes one line again.  Not necessarily better for this one problem,
 but worth mentioning.
 
 -Cliff
 
 Cliff Woolley
 Central Systems Software Administrator
 Washington and Lee University
 http://www.wlu.edu/~jwoolley/
 
 Work: (540) 463-8089
 Pager: (540) 462-3472