Is it a good idea to fork a sed for each request?
The RewriteRule condition will accept any URL path _containing_ /exchange/... and proxy it to what host?
There are built-in functions available for RewriteMap, including functions for encoding and decoding URLs. I suggest that you use them instead of the prg: method.
RewriteEngine on
RewriteMap damnpercent int:escape
RewriteRule ^(/exchange/.*)$ http://exchange.server.com/${damnpercent:$1} [P]
-ascs
-----Original Message-----
From: Covington, Chris [mailto:Chris.Covington@xxxxxxxxxxx]
Sent: Thursday, September 29, 2005 10:15 PM
To: users@xxxxxxxxxxxxxxxx
Subject: [users@httpd] % mod_proxy URL issue
Is it possible to have a mod_rewrite rule which will rewrite a % with a %25? Below is a hack for Outlook Web Access which, when reverse-proxied, apache2 chokes on when a % is in a subject of an email (and thus in the URL) unless the following is done.
Chris
Insert this right before your "front-end" Proxy* directives in httpd.conf.
# Using mod_rewrite to fix a problem when percent symbols are in # the subject line of the OWA email (the email subject is used # in the web query - WTF?). The entire URI is passed to a small # bash script I wrote that replaces all occurrences of the % symbol # with the URI escape sequence (%25). That seems to make everything # happy.
RewriteEngine On
RewriteMap damnpercent prg:/usr/local/bin/percent_rewrite
RewriteCond $1 ^/exchange/.*\%.*$
RewriteRule (/exchange/.*) ${damnpercent:$1} [P]
The simple bash script uses sed to work its magic. You'll notice I am also sending the original and changed URL to a log file in /tmp. This helps with troubleshooting and can be shut off when you're confidant everything is working. (This could easily be rewritten in any language.) #!/bin/bash
LOGFILE=/tmp/percent_rewrite.log
cat /dev/null > $LOGFILE
while read URL
do
NEWURL=$(echo "$URL" | sed -e "s/%/%25/g")
echo "Changing $URL to $NEWURL" >> $LOGFILE
echo $NEWURL
done
---
Chris Covington
IT
Plus One Health Management
75 Maiden Lane Suite 801
NY, NY 10038
646-312-6269
http://www.plusoneactive.com
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