49 lines
2.0 KiB
Racket
49 lines
2.0 KiB
Racket
#lang syndicate
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;;; SPDX-License-Identifier: LGPL-3.0-or-later
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;;; SPDX-FileCopyrightText: Copyright © 2021 Tony Garnock-Jones <tonyg@leastfixedpoint.com>
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(require (only-in sha bytes->hex-string))
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(require (only-in racket/list append-map))
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(require syndicate/relay)
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(require syndicate/rewrite)
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(require syndicate/sturdy)
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(require syndicate/schemas/gen/gatekeeper)
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(require syndicate/sturdy)
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(require syndicate/drivers/tcp)
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(module+ main
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(standard-actor-system (ds)
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(define ds-oid "syndicate")
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(define ds-key (make-bytes KEY_LENGTH))
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(at ds (assert (Bind ds-oid ds-key ds)))
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(define root-cap (mint ds-oid ds-key))
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(write-preserve/text (->preserve root-cap) #:indent 4 #:commas? #f)
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(newline)
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(displayln (bytes->hex-string (sturdy-encode (->preserve root-cap))))
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(define spec (TcpLocal "0.0.0.0" 5999))
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(at ds
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(stop-on (asserted (StreamListenerError spec _)))
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(during/spawn (StreamConnection $source $sink spec)
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#:name (list 'tcp-server source)
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(run-relay #:packet-writer (lambda (bs) (send-data sink bs))
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#:setup-inputs
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(lambda (tr)
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(handle-connection source sink
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#:on-data (lambda (d _m) (accept-bytes tr d))))
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#:initial-ref
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(object #:name 'gatekeeper
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[(Resolve unvalidated-sturdyref observer)
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(at ds
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(during (Bind (SturdyRef-oid unvalidated-sturdyref) $key $target)
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(define sturdyref (validate unvalidated-sturdyref key))
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(define attenuation
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(append-map Attenuation-value
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(reverse (SturdyRef-caveatChain sturdyref))))
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(define attenuated-target
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(apply attenuate-entity-ref target attenuation))
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(at observer (assert (embedded attenuated-target)))))]))))))
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