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

[Martin Brennfleck <ma...@schlund.de>]

>Number:         4276
>Category:       mod_rewrite
>Synopsis:       Rewriting with {prg:/my/rewriteprog} fails if URI contains %0A
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Tue Apr 20 06:10:01 PDT 1999
>Last-Modified:
>Originator:     martin@schlund.de
>Organization:
apache
>Release:        1.3.6
>Environment:
Linux infong1 2.0.36 #1 Wed Mar 24 21:40:07 MET 1999 i686 unknown
gcc version egcs-2.91.60 19981201 (egcs-1.1.1 release) 
>Description:
passing a URL to the rewriteprog wich contains %0A in fact 
passes 2 lines to the rewriteprog. Because of the recommeded 
structure of the rewriteprog (one line in, one line out)
the apache gets back two lines wich is very confusing for it.
>How-To-Repeat:
Install a {prg:/my/rewriteprog} and pass a url containing
%0A to it.
>Fix:
A workaround is to prepend a magic string to the url.
If the rewriteprg cannot find the magic string at the begin of a
inputline it should produce no output
>Audit-Trail:
>Unformatted:
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