Below is the software I have developed, modified, or maintained for HCoop.
I am a committer on the mod_waklog sourceforge project (possibly the only active one). Mostly I fuse together the enhancements from the various branches of it that people keep forking.
More recently I wrote up a patch that eliminates the need for WaklogDefaultPrincipal to work around an assumption in Apache's request processing. I also got mod_waklog to use the delete-after-close trick on the files it creates in /tmp.
The libnss-afs library is an NSS plugin which answers these queries using the information stored in the AFS ptserver, avoiding the need to duplicate (and update) this information in /etc/passwd or LDAP. The library also synthesizes the name AfsPag-XXXX for the fake group ids that are used to represent AFS PAGs.
More information is here.
I have created a debian package for filedrawers. This package includes the following changes:
The debian package can be found here:
kadmin DNS SRV support
All of the MIT Kerberos tools except kadmin support reading their configuration from DNS via SRV records. I have written a patch to libkadm5 which adds this ability to kadmin as well. Here is the request tracker issue (login:guest password:pass) to have it included in the main distribution. Here is why it still hasn't been included in the latest release.
Incremental AFS Backup Script
I've written a script that does byte-level incremental backups of AFS volumes by way of xdelta3
An earlier (pre-incremental) version of this script is currently in use at HCoop. The incremental script above has been running successfully on megacz.com since 23-Jan-2008.
Not really software, but I wrote the first version of SetupNewMachines, which – last time I checked – was the only comprehensive guide out there explaining how to set up an AFS client machine with all the PAM+NSS+SSH bells and whistles.