CL-S3

CL-S3 is a Common Lisp library that implements a client interface to the Amazon S3 Web Service.

More specifically, CL-S3

• uses the Amazon S3 REST interface
• does proper authorization
• implements all S3 API calls with all options
• parses the XML returned by some of the API
• converts S3 error responses to proper Common Lisp condition objects
• allows custom meta header (including canned access policies) and query parameters
• does proper keep-alive processing (courtesy s-http-client)
• is portable over Common Lisp implementations (courtesy s-sysdeps)
• can optionally validate get and put object calls using MD5 hashing
• contains 2 example higher level functions converting XML to simpler data
• contains 2 example higher level functions for uplaoding and downloading files to and from S3
• is properly packaged and has a documented public API
• should be installed using ASDF

You can download the code using the URL http://homepage.mac.com/svc/cl-s3/cl-s3.tgz or from S3 itself using the URL http://s3.amazonaws.com:80/be-wolf359-test/cl-s3.tgz.

CL-S3 was written by Sven Van Caekenberghe and is available under an LLGPL license. The current release, dated May 30 2007, is available as a tarball only.

Please read the full Amazon S3 documentation and study the Common Lisp source code before contacting me with ;-)

There is an interesting post on Nicky Peeters' Blog showing how to get started using CL-S3.