[CentOS] Apache sources?

To install some perl modules (ugh) I need to install a dependency module: Apache In order that perl's Apache installs, it needs the apache sources. The apache sources are not listed in the yum repository for the centos version installed (2.0.52-22.ent.centos4)

I managed to find httpd-2.0.52-22.ent.centos4.src.rpm But an rpm -iv yielded a buch of messages warning: user updatecentos does not exist - using root warning: group updatecentos does not exist - using root

It appears that more is done than just put files somewhere. In fact, the src.rpm consists mostly of patches.

Question: is there a way to get the sources?