Download source code from Apple's website
apple-open-source, macos, wget
Solution
I finally figured it out, sources can be conveniently downloaded from http://opensource.apple.com/tarballs/
Problem
How do I download source code from Apple's website (http://opensource.apple.com/source/). In particular, I am interested in http://opensource.apple.com/source/Security/Security-55110/. `wget -r` is downloading HTML files instead of source files. Thanks!