33 lines
1013 B
Fennel
33 lines
1013 B
Fennel
(local { : system } (require :anoia))
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(local svc (require :anoia.svc))
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(fn deletions [old-addresses new-addresses]
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(let [deleted {}]
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(each [n address (pairs old-addresses)]
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(let [now (. new-addresses n)]
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(if (or (not now) (not (= now.len address.len)))
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(table.insert deleted address))))
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deleted))
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(fn update-prefixes [wan-device addresses new-addresses exec]
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(each [_ p (ipairs (deletions addresses new-addresses))]
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(exec
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(.. "ip address del " p.address "1/" p.len " dev " wan-device)))
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(each [_ p (pairs new-addresses)]
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(exec
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(.. "ip address change " p.address "1/" p.len
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" dev " wan-device
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" valid_lft " p.valid
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" preferred_lft " p.preferred
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)))
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new-addresses)
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(fn run []
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(let [[state-directory lan-device] arg
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dir (svc.open state-directory)]
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(accumulate [addresses []
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v (dir:events)]
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(update-prefixes lan-device addresses (v:output "prefix") system))))
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{ : changes : run }
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