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ames: only forward downward

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This commit is contained in:
Ted Blackman 2019-08-15 21:12:59 -07:00
parent 1cde58b960
commit f26b71aa06
1 changed files with 19 additions and 1 deletions
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20
pkg/arvo/sys/vane/alef.hoon
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@ -754,6 +754,7 @@
=/ =task
?. ?=(%soft -.wrapped-task)
wrapped-task
~| our^%ames-fail-soft
;;(task p.wrapped-task)
:: %born: set .unix-duct and start draining .queued-events
::
@ -981,11 +982,28 @@
on-hear-open
:: +on-hear-forward: maybe forward a packet to someone else
::
:: TODO: filter for transitive closure of sponsors/sponsees.
:: Only forward downward, to limit DDoS amplification vectors:
:: Galaxies forward to stars and below.
:: Stars forward to planets and below.
:: Planets forward to moons.
::
:: Also, only stars forward to comets, since only a star can be a
:: comet's sponsor.
::
++ on-hear-forward
|= [=lane =packet ok=?]
^+ event-core
:: only forward downward
::
?: %+ lte
rank:(encode-ship-metadata sndr.packet)
rank:(encode-ship-metadata our)
::
event-core
:: only stars forward to comets
::
?: &(=(%pawn (clan:title sndr.packet)) !=(%king (clan:title our)))
event-core
::
=/ ship-state (~(get by peers.ames-state) rcvr.packet)
:: ignore packets to unfamiliar ships