LDAP Accounting

[Arran Cudbard-Bell]

Just pushed up a few patches to add LDAP accounting.

Not well tested, but managed to modify attributes in my test directory.

https://github.com/FreeRADIUS/freeradius-server/commit/8a62cce4a224c03b5b5fe40cc308215c1d1b5c5e

For the moment it doesn't support adding new LDAP objects, just modifying existing ones. If someone really really wants that I could take a look at adding it.

Probably need to do something about the behaviour of post-auth now, suggestions welcome.

Just drop :

	#
	#  Modify user object on receiving Accounting-Request
	#
	#  Useful for recording things like the last time the user logged
	#  in, or the Acct-Session-ID for CoA/DM.
	#
	#  LDAP modification items are in the format:
	# 	<ldap attr> <op> <value>
	# 
	#  Where:
	#  	<ldap attr>:	The LDAP attribute to add modify or delete.
	#  	<op>: 		One of the assignment operators (:=, +=, -=).
	#				Note: '=' is *not* supported.
	#  	<value>:		The value to add modify or delete.
	# 
	accounting {
		reference = "%{tolower:type.%{Acct-Status-Type}}"
		
		type {
			start {
				update {
					description := "Online at %S"
				}
			}
			
			interim-update {
				update {
					description := "Online at %S"
				}
			}
			
			stop {
				update {
					description := "Offline at %S"
				}
			}
		}
	}

Into your existing config.

-Arran