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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