if-then-else condition in apache virtual host - apache

Question

I have an Apache virtual host defined for https ://sb.domain1.com and I need to do a different action depending on the IP address which calls the virtual host. If the call comes from 172.16.xxx.yyy then i need to redirect to http ://sb.domain2.com else i need to redirect to http ://sb.domain1.com.
That is I don't know how to translate the following lines (which come from /etc/http/conf.d/ssl.conf file):
<VirtualHost 192.168.254.68:443>
ServerName sb.domain1.com
SSLProxyEngine on
SSLCertificateKeyFile /etc/httpd/conf/ssl.key/server.key
SSLCertificateFile /etc/httpd/conf/ssl.crt/server.crt
SSLCertificateChainFile /etc/httpd/conf/ssl.crt/STAR.ca-bundle
SSLEngine on
SSLSessionCacheTimeout 600
if IP = 172.16.xxx.yyy
then
Redirect to http ://sb.domain2.com
else
ProxyPass / http ://sb.domain1.com/
ProxyPassReverse / http ://sb.domain1.com/
else
ErrorLog "|/usr/sbin/rotatelogs /var/log/httpd/sb/ssl_error_log 86400"
CustomLog "|/usr/sbin/rotatelogs /var/log/httpd/sb/ssl_access_log 86400" combined
</VirtualHost>
can you suggest me translating the above directives?

Answer 1

Something along the lines of this should work:
RewriteEngine On
RewriteCond %{REMOTE_ADDR} ^172\.16\.
RewriteRule ^/(.*) http://sb.domain2.com/$1 [L,QSA]
and then just
ProxyPass / http://sb.domain1.com/
ProxyPassReverse / http://sb.domain1.com/
After all, if you match the IP, you will be redirected, so no other requests will be made here. Everyone else will then be proxied.