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341 lines
8.8 KiB
Plaintext
341 lines
8.8 KiB
Plaintext
:: permission-hook: mirror remote permissions
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::
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:: allows mirroring permissions between local and foreign ships.
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:: local permission path are exposed according to the permssion paths
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:: configured for them as `access-control`.
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::
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/- *permission-hook
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/+ *permission-json, default-agent, verb, dbug
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::
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~% %permission-hook-top ..is ~
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|%
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+$ state
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$% [%0 state-0]
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==
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::
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+$ owner-access [ship=ship access-control=path]
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::
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+$ state-0
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$: synced=(map path owner-access)
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access-control=(map path (set path))
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boned=(map wire (list bone))
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==
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::
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+$ card card:agent:gall
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--
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::
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=| state-0
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=* state -
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::
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%- agent:dbug
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%+ verb |
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^- agent:gall
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=<
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|_ =bowl:gall
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+* this .
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do ~(. +> bowl)
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def ~(. (default-agent this %|) bowl)
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::
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++ on-init on-init:def
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++ on-save !>(state)
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++ on-load
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|= old=vase
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^- (quip card _this)
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[~ this(state !<(state-0 old))]
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::
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++ on-poke
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|= [=mark =vase]
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^- (quip card _this)
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?+ mark (on-poke:def mark vase)
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%permission-hook-action
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=^ cards state
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(handle-permission-hook-action:do !<(permission-hook-action vase))
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[cards this]
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==
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::
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++ on-watch
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|= =path
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^- (quip card _this)
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?. ?=([%permission ^] path) (on-watch:def path)
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=^ cards state
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(handle-watch-permission:do t.path)
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[cards this]
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::
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++ on-agent
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|= [=wire =sign:agent:gall]
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^- (quip card _this)
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?- -.sign
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%poke-ack (on-agent:def wire sign)
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::
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%fact
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?. ?=(%permission-update p.cage.sign)
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(on-agent:def wire sign)
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=^ cards state
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(handle-permission-update:do wire !<(permission-update q.cage.sign))
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[cards this]
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::
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%watch-ack
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?~ p.sign [~ this]
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?> ?=(^ wire)
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:_ this(synced (~(del by synced) t.wire))
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::NOTE we could've gotten rejected for permission reasons, so we don't
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:: try to resubscribe automatically.
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%. ~
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%- slog
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:* leaf+"permission-hook failed subscribe on {(spud t.wire)}"
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leaf+"stack trace:"
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u.p.sign
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==
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::
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%kick
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?> ?=([* ^] wire)
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:: if we're not actively using it, we can safely ignore the %kick.
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::
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?. (~(has by synced) t.wire)
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[~ this]
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:: otherwise, resubscribe.
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::
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=/ =owner-access (~(got by synced) t.wire)
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:_ this
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[%pass wire %agent [ship.owner-access %permission-hook] %watch wire]~
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==
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::
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++ on-leave on-leave:def
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++ on-peek on-peek:def
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++ on-arvo on-arvo:def
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++ on-fail on-fail:def
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--
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::
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|_ =bowl:gall
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++ handle-permission-hook-action
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|= act=permission-hook-action
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^- (quip card _state)
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?- -.act
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%add-owned
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?> (team:title our.bowl src.bowl)
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?: (~(has by synced) owned.act)
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[~ state]
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=. synced (~(put by synced) owned.act [our.bowl access.act])
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=. access-control
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(~(put ju access-control) access.act owned.act)
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=/ perm-path [%permission owned.act]
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:_ state
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[%pass perm-path %agent [our.bowl %permission-store] %watch perm-path]~
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::
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%add-synced
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?> (team:title our.bowl src.bowl)
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?: (~(has by synced) path.act)
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[~ state]
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=. synced (~(put by synced) path.act [ship.act ~])
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=/ perm-path [%permission path.act]
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:_ state
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[%pass perm-path %agent [ship.act %permission-hook] %watch perm-path]~
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::
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%remove
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=/ owner-access=(unit owner-access)
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(~(get by synced) path.act)
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?~ owner-access
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[~ state]
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:: if we own it, and it's us asking,
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::
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?: ?& =(ship.u.owner-access our.bowl)
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(team:title our.bowl src.bowl)
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==
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:: delete the permission path and its subscriptions from this hook.
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::
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:- :- [%give %kick [%permission path.act]~ ~]
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(leave-permission path.act)
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%_ state
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synced (~(del by synced) path.act)
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::
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access-control
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(~(del by access-control) access-control.u.owner-access)
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==
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:: else, if either source = ship or source = us,
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::
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?: |(=(ship.u.owner-access src.bowl) (team:title our.bowl src.bowl))
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:: delete a foreign ship's path.
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::
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:- (leave-permission path.act)
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%_ state
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synced (~(del by synced) path.act)
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boned (~(del by boned) [%permission path.act])
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==
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:: else, ignore action entirely.
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::
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[~ state]
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==
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::
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++ handle-watch-permission
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|= =path
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^- (quip card _state)
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=/ =owner-access (~(got by synced) path)
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?> =(our.bowl ship.owner-access)
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:: scry permissions to check if subscriber is allowed
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::
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?> (permitted src.bowl access-control.owner-access)
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=/ pem (permission-scry path)
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:_ state
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[%give %fact ~ %permission-update !>([%create path pem])]~
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::
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++ handle-permission-update
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|= [=wire diff=permission-update]
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^- (quip card _state)
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?: (team:title our.bowl src.bowl)
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(handle-local diff)
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(handle-foreign diff)
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::
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++ handle-local
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|= diff=permission-update
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^- (quip card _state)
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?- -.diff
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%create [~ state]
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%add (change-local-permission %add [path who]:diff)
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%remove (change-local-permission %remove [path who]:diff)
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::
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%delete
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?. (~(has by synced) path.diff)
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[~ state]
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=/ control=(unit path)
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=+ (~(got by synced) path.diff)
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?. =(our.bowl ship) ~
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`access-control
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:_ %_ state
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synced (~(del by synced) path.diff)
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access-control ?~ control access-control
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(~(del ju access-control) u.control path.diff)
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==
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:_ ~
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:* %pass
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[%permission path.diff]
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%agent
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[our.bowl %permission-store]
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[%leave ~]
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==
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==
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::
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++ change-local-permission
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|= [kind=?(%add %remove) pax=path who=(set ship)]
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^- (quip card _state)
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:_ state
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:- ?- kind
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%add (update-subscribers [%permission pax] [%add pax who])
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%remove (update-subscribers [%permission pax] [%remove pax who])
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==
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=/ access-paths=(unit (set path)) (~(get by access-control) pax)
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:: check if this path changes the access permissions for other paths
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?~ access-paths ~
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(quit-subscriptions kind pax who u.access-paths)
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::
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++ handle-foreign
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|= diff=permission-update
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^- (quip card _state)
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?- -.diff
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?(%create %add %remove)
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(change-foreign-permission path.diff diff)
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::
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%delete
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?> ?=([* ^] path.diff)
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=/ owner-access=(unit owner-access)
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(~(get by synced) path.diff)
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?~ owner-access
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[~ state]
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?. =(ship.u.owner-access src.bowl)
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[~ state]
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:_ state(synced (~(del by synced) path.diff))
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:~ (permission-poke diff)
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::
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:* %pass
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[%permission path.diff]
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%agent
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[src.bowl %permission-hook]
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[%leave ~]
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==
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==
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==
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::
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++ change-foreign-permission
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|= [=path diff=permission-update]
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^- (quip card _state)
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?> ?=([* ^] path)
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=/ owner-access=(unit owner-access)
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(~(get by synced) path)
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:_ state
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?~ owner-access ~
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?. =(src.bowl ship.u.owner-access) ~
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[(permission-poke diff)]~
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::
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++ quit-subscriptions
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|= $: kind=?(%add %remove)
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perm-path=path
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who=(set ship)
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access-paths=(set path)
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==
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^- (list card)
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=/ perm (permission-scry perm-path)
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:: if the change resolves to "allow",
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::
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?. ?| ?&(=(%black kind.perm) =(%add kind))
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?&(=(%white kind.perm) =(%remove kind))
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==
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:: do nothing.
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~
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:: else, it resolves to "deny"/"ban".
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:: kick subscriptions for all ships, at all affected paths.
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::
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%- zing
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%+ turn ~(tap in who)
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|= check-ship=ship
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^- (list card)
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%+ turn ~(tap in access-paths)
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|= access-path=path
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[%give %kick [%permission access-path]~ `check-ship]
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::
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++ permission-scry
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|= pax=path
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^- permission
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=. pax ;:(weld /=permission-store/(scot %da now.bowl)/permission pax /noun)
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(need .^((unit permission) %gx pax))
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::
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++ permitted
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|= [who=ship =path]
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.^ ?
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%gx
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(scot %p our.bowl)
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%permission-store
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(scot %da now.bowl)
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%permitted
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(scot %p src.bowl)
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(snoc path %noun)
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==
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::
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++ permission-poke
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|= act=permission-action
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^- card
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:* %pass
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/permission-action
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%agent
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[our.bowl %permission-store]
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%poke
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%permission-action
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!>(act)
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==
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::
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++ update-subscribers
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|= [=path upd=permission-update]
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^- card
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[%give %fact ~[path] %permission-update !>(upd)]
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::
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++ leave-permission
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|= =path
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^- (list card)
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=/ owner-access=(unit owner-access)
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(~(get by synced) path)
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?~ owner-access ~
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:_ ~
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=/ perm-path [%permission path]
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?: =(ship.u.owner-access our.bowl)
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[%pass perm-path %agent [our.bowl %permission-store] %leave ~]
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[%pass perm-path %agent [ship.u.owner-access %permission-hook] %leave ~]
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--
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