gmoc.py prepends a URN prefix onto invalid URNs provided by callers

[chaos@bbn.com]

When i invoke:

gmoc.Interface(
  'urn:publicid:IDN+rothe008am.gpolab.bbn.com+interface+04:4d:00:26:f1:3f:3b:00:gi0/1',
  resource = <gmoc.Resource object at 0x9cfc12c>, # ID: urn:publicid:IDN+openflow:foam:rothe008am.gpolab.bbn.com+datapath+04:4d:00:26:f1:3f:3b:00
)

the interface id parameter gets set to:

urn:publicid:IDN+gmoc.geni.net+interface+urn:publicid:IDN+rothe008am.gpolab.bbn.com+interface+04:4d:00:26:f1:3f:3b:00:gi0/1

This is because the / character is invalid in a URN, so the check for whether the submitted value is already a valid URN fails, at which point validateInterfaceURN() adds another URN prefix. Whenever gmoc.py generates a URN using a custom prefix, it should:

1. Fail (either before or after generating the URN) if the resulting URN would not pass a URN validity check
2. Fail (either before or after generating the URN) if the resulting URN would contain more than one instance of the string urn:publicid:IDN+

All of the validate<type>URN() methods generate URNs, so this should be fixed in all of them.

[chaos@bbn.com]

Just updating the keyword to indicate that this issue still exists in 1.2.1. (This is not a surprise.)

[chaos@bbn.com]

Sorry, that was my stupidity --- i was actually testing against 1.2.0. The implementation of the Interface type is different enough in 1.2.1 that my test doesn't run out of the box, so i'll have to look more carefully.