The current way we generate the X.509 one-line subject for gridmap inputs is broken:

https://github.com/xrootd/xrootd/blob/master/src/XrdCrypto/XrdCryptosslAux.cc#L767

It takes the new-style defaults for DN generation (where RDNs are ", "-separated) and simply replaces ", " with "/" to generate the old-style.

This fails to work for DNs that contain a ", ". For example, here's a DN in the gridmap:

/DC=org/DC=incommon/C=US/ST=California/L=La Jolla/O=University of California, San Diego/CN=stashcache.t2.ucsd.edu

(Notice the ", " in "University of California, San Diego") To actually use this DN in a gridmap, one must do:

/DC=org/DC=incommon/C=US/ST=California/L=La Jolla/O=University of California/San Diego/CN=stashcache.t2.ucsd.edu

I think we'll need to implement our own "real" DN generation by iterating through the X509_NAME structure instead of just string munging.

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