mirror of
https://github.com/ilyakooo0/urbit.git
synced 2024-12-19 21:02:01 +03:00
ames: move various types and gates into lull
So that userspace may also en- and decode (scry) packets.
This commit is contained in:
fang
parent
8731ac191d
commit
12ca0f45e5
@ -1153,6 +1153,9 @@
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++ com |~(a=pass ^?(..nu)) :: from pass
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-- ::nu ::
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-- ::acru ::
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:: +protocol-version: current version of the ames wire protocol
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::
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++ protocol-version `?(%0 %1 %2 %3 %4 %5 %6 %7)`%0
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:: $address: opaque atomic transport address to or from unix
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::
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+$ address @uxaddress
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@ -1194,6 +1197,25 @@
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+$ song (list purr) :: full response
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::
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:: +| %kinetics
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:: $dyad: pair of sender and receiver ships
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::
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+$ dyad [sndr=ship rcvr=ship]
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:: $packet: noun representation of an ames datagram packet
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::
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:: Roundtrips losslessly through atom encoding and decoding.
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::
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:: .origin is ~ unless the packet is being forwarded. If present,
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:: it's an atom that encodes a route to another ship, such as an IPv4
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:: address. Routes are opaque to Arvo and only have meaning in the
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:: interpreter. This enforces that Ames is transport-agnostic.
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::
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+$ packet
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$: dyad
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sndr-tick=@ubC
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rcvr-tick=@ubC
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origin=(unit @uxaddress)
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content=@uxcontent
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==
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:: $ack: positive ack, nack packet, or nack trace
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::
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+$ ack
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@ -1287,6 +1309,14 @@
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siz=@ud
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byts
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==
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+$ peep :: request data
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$: =path
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num=@ud
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==
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+$ twit :: signed request
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$: signature=@
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peep
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==
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:: $qos: quality of service; how is our connection to a peer doing?
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::
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:: .last-contact: last time we heard from peer, or if %unborn, when
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@ -1465,6 +1495,170 @@
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num-received=fragment-num
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fragments=(map fragment-num fragment)
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==
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:: $rank: which kind of ship address, by length
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::
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:: 0b0: galaxy or star -- 2 bytes
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:: 0b1: planet -- 4 bytes
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:: 0b10: moon -- 8 bytes
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:: 0b11: comet -- 16 bytes
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::
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+$ rank ?(%0b0 %0b1 %0b10 %0b11)
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::
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:: +| %coding
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:: +decode-ship-size: decode a 2-bit ship type specifier into a byte width
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::
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:: Type 0: galaxy or star -- 2 bytes
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:: Type 1: planet -- 4 bytes
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:: Type 2: moon -- 8 bytes
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:: Type 3: comet -- 16 bytes
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::
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++ decode-ship-size
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|= rank=@ubC
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^- @
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::
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?+ rank !!
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%0b0 2
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%0b1 4
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%0b10 8
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%0b11 16
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==
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:: +is-valid-rank: does .ship match its stated .size?
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::
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++ is-valid-rank
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|= [=ship size=@ubC]
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^- ?
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.= size
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=/ wid (met 3 ship)
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?: (lte wid 1) 2
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?: =(2 wid) 2
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?: (lte wid 4) 4
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?: (lte wid 8) 8
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?> (lte wid 16) 16
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:: +decode-packet: deserialize packet from bytestream or crash
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::
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++ decode-packet
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|= =blob
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^- [ames=? =packet]
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~| %decode-packet-fail
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:: first 32 (2^5) bits are header; the rest is body
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::
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=/ header (end 5 blob)
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=/ body (rsh 5 blob)
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:: read header; first three bits are reserved
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::
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=/ is-ames (cut 0 [3 1] header)
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:- =(& is-ames)
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::
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=/ version (cut 0 [4 3] header)
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?. =(protocol-version version)
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~& [%ames-protocol-version protocol-version version]
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~| ames-protocol-version+version !!
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::
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=/ sndr-size (decode-ship-size (cut 0 [7 2] header))
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=/ rcvr-size (decode-ship-size (cut 0 [9 2] header))
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=/ checksum (cut 0 [11 20] header)
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=/ relayed (cut 0 [31 1] header)
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:: origin, if present, is 6 octets long, at the end of the body
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::
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=^ origin=(unit @) body
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?: =(| relayed)
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[~ body]
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=/ len (sub (met 3 body) 6)
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[`(end [3 6] body) (rsh [3 6] body)]
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:: .checksum does not apply to the origin
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::
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?. =(checksum (end [0 20] (mug body)))
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~& >>> %ames-checksum
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~| %ames-checksum !!
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:: read fixed-length sndr and rcvr life data from body
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::
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:: These represent the last four bits of the sender and receiver
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:: life fields, to be used for quick dropping of honest packets to
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:: or from the wrong life.
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::
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=/ sndr-tick (cut 0 [0 4] body)
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=/ rcvr-tick (cut 0 [4 4] body)
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:: read variable-length .sndr and .rcvr addresses
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::
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=/ off 1
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=^ sndr off [(cut 3 [off sndr-size] body) (add off sndr-size)]
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?. (is-valid-rank sndr sndr-size)
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~& >>> [%ames-sender-imposter sndr sndr-size]
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~| ames-sender-impostor+[sndr sndr-size] !!
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::
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=^ rcvr off [(cut 3 [off rcvr-size] body) (add off rcvr-size)]
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?. (is-valid-rank rcvr rcvr-size)
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~& >>> [%ames-receiver-imposter rcvr rcvr-size]
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~| ames-receiver-impostor+[rcvr rcvr-size] !!
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:: read variable-length .content from the rest of .body
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::
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=/ content (cut 3 [off (sub (met 3 body) off)] body)
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[[sndr rcvr] sndr-tick rcvr-tick origin content]
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::
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++ decode-request
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|= =hoot
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^- twit
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:- sig=(cut 3 [0 64] hoot)
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-:(decode-request-info (rsh 3^64 hoot))
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::
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++ decode-request-info
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|= =hoot
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^- [=peep =purr]
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=+ num=(cut 3 [0 4] hoot)
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=+ len=(cut 3 [4 2] hoot)
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=+ pat=(cut 3 [6 len] hoot)
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:- [(stab pat) num]
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:: if there is data remaining, it's the response
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(rsh [3 (add 6 len)] hoot)
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:: +encode-packet: serialize a packet into a bytestream
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::
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++ encode-packet
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|= [ames=? packet]
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^- blob
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::
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=/ sndr-meta (encode-ship-metadata sndr)
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=/ rcvr-meta (encode-ship-metadata rcvr)
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::
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=/ body=@
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;: mix
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sndr-tick
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(lsh 2 rcvr-tick)
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(lsh 3 sndr)
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(lsh [3 +(size.sndr-meta)] rcvr)
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(lsh [3 +((add size.sndr-meta size.rcvr-meta))] content)
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==
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=/ checksum (end [0 20] (mug body))
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=? body ?=(^ origin) (mix u.origin (lsh [3 6] body))
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::
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=/ header=@
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%+ can 0
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:~ [3 reserved=0]
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[1 is-ames=ames]
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[3 protocol-version]
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[2 rank.sndr-meta]
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[2 rank.rcvr-meta]
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[20 checksum]
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[1 relayed=.?(origin)]
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==
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(mix header (lsh 5 body))
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::
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:: +encode-ship-metadata: produce size (in bytes) and address rank for .ship
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::
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:: 0: galaxy or star
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:: 1: planet
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:: 2: moon
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:: 3: comet
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::
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++ encode-ship-metadata
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|= =ship
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^- [size=@ =rank]
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::
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=/ size=@ (met 3 ship)
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::
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?: (lte size 2) [2 %0b0]
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?: (lte size 4) [4 %0b1]
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?: (lte size 8) [8 %0b10]
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[16 %0b11]
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-- ::ames
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:: ::::
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:::: ++behn :: (1b) timekeeping
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@ -90,10 +90,7 @@
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:: - sending packets: +on-plea -> +make-peer-core (make a function kind of like +on-memo) -> call +on-pump-send kind of like how +run-message-pump does
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:: (assuming as event, scry just stateless)
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::
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:: protocol-version: current version of the ames wire protocol
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::
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!:
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=/ protocol-version=?(%0 %1 %2 %3 %4 %5 %6 %7) %0
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=, ames
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=* point point:jael
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=* public-keys-result public-keys-result:jael
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@ -253,53 +250,6 @@
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=. private-key (rsh 8 (rsh 3 private-key))
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::
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`@`(shar:ed:crypto public-key private-key)
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:: +encode-packet: serialize a packet into a bytestream
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::
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++ encode-packet
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|= [ames=? packet]
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^- blob
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::
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=/ sndr-meta (encode-ship-metadata sndr)
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=/ rcvr-meta (encode-ship-metadata rcvr)
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::
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=/ body=@
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;: mix
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sndr-tick
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(lsh 2 rcvr-tick)
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(lsh 3 sndr)
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(lsh [3 +(size.sndr-meta)] rcvr)
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(lsh [3 +((add size.sndr-meta size.rcvr-meta))] content)
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==
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=/ checksum (end [0 20] (mug body))
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=? body ?=(^ origin) (mix u.origin (lsh [3 6] body))
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::
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=/ header=@
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%+ can 0
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:~ [3 reserved=0]
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[1 is-ames=ames]
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[3 protocol-version]
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[2 rank.sndr-meta]
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[2 rank.rcvr-meta]
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[20 checksum]
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[1 relayed=.?(origin)]
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==
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(mix header (lsh 5 body))
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::
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++ decode-request
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|= =hoot
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^- twit
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:- sig=(cut 3 [0 64] hoot)
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-:(decode-request-info (rsh 3^64 hoot))
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::
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++ decode-request-info
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|= =hoot
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^- [=peep =purr]
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=+ num=(cut 3 [0 4] hoot)
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=+ len=(cut 3 [4 2] hoot)
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=+ pat=(cut 3 [6 len] hoot)
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:- [(stab pat) num]
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:: if there is data remaining, it's the response
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(rsh [3 (add 6 len)] hoot)
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::
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++ decode-response-packet
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|= =purr
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@ -326,74 +276,6 @@
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?~ dat ~
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~| [%fine %response-not-cask]
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;;((cask) (cue dat))
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:: +decode-packet: deserialize packet from bytestream or crash
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::
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++ decode-packet
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|= =blob
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^- [ames=? =packet]
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~| %decode-packet-fail
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:: first 32 (2^5) bits are header; the rest is body
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::
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=/ header (end 5 blob)
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=/ body (rsh 5 blob)
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:: read header; first three bits are reserved
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::
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=/ is-ames (cut 0 [3 1] header)
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:- =(& is-ames)
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::
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=/ version (cut 0 [4 3] header)
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?. =(protocol-version version)
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~| ames-protocol-version+version !!
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::
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=/ sndr-size (decode-ship-size (cut 0 [7 2] header))
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=/ rcvr-size (decode-ship-size (cut 0 [9 2] header))
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=/ checksum (cut 0 [11 20] header)
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=/ relayed (cut 0 [31 1] header)
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:: origin, if present, is 6 octets long, at the end of the body
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::
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=^ origin=(unit @) body
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?: =(| relayed)
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[~ body]
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=/ len (sub (met 3 body) 6)
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[`(end [3 6] body) (rsh [3 6] body)]
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:: .checksum does not apply to the origin
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::
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?. =(checksum (end [0 20] (mug body)))
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~| %ames-checksum !!
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:: read fixed-length sndr and rcvr life data from body
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::
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:: These represent the last four bits of the sender and receiver
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:: life fields, to be used for quick dropping of honest packets to
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:: or from the wrong life.
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::
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=/ sndr-tick (cut 0 [0 4] body)
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=/ rcvr-tick (cut 0 [4 4] body)
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:: read variable-length .sndr and .rcvr addresses
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::
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=/ off 1
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=^ sndr off [(cut 3 [off sndr-size] body) (add off sndr-size)]
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?. (is-valid-rank sndr sndr-size)
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~| ames-sender-impostor+[sndr sndr-size] !!
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::
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=^ rcvr off [(cut 3 [off rcvr-size] body) (add off rcvr-size)]
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?. (is-valid-rank rcvr rcvr-size)
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~| ames-receiver-impostor+[rcvr rcvr-size] !!
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:: read variable-length .content from the rest of .body
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::
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=/ content (cut 3 [off (sub (met 3 body) off)] body)
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[[sndr rcvr] sndr-tick rcvr-tick origin content]
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:: +is-valid-rank: does .ship match its stated .size?
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::
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++ is-valid-rank
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|= [=ship size=@ubC]
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^- ?
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.= size
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=/ wid (met 3 ship)
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?: (lte wid 1) 2
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?: =(2 wid) 2
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?: (lte wid 4) 4
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?: (lte wid 8) 8
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?> (lte wid 16) 16
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:: +welt: like +weld but first argument is reversed
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:: TODO: move to hoon.hoon
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++ welt
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@ -486,52 +368,10 @@
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=/ vec ~[sndr.packet rcvr.packet sndr-life rcvr-life]
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;; shut-packet %- cue %- need
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(~(de sivc:aes:crypto (shaz symmetric-key) vec) siv len cyf)
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:: +decode-ship-size: decode a 2-bit ship type specifier into a byte width
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::
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:: Type 0: galaxy or star -- 2 bytes
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:: Type 1: planet -- 4 bytes
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:: Type 2: moon -- 8 bytes
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:: Type 3: comet -- 16 bytes
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::
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++ decode-ship-size
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|= rank=@ubC
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^- @
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::
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?+ rank !!
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%0b0 2
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%0b1 4
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%0b10 8
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%0b11 16
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==
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:: +encode-ship-metadata: produce size (in bytes) and address rank for .ship
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::
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:: 0: galaxy or star
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:: 1: planet
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:: 2: moon
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:: 3: comet
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::
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++ encode-ship-metadata
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|= =ship
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^- [size=@ =rank]
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::
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=/ size=@ (met 3 ship)
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::
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?: (lte size 2) [2 %0b0]
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?: (lte size 4) [4 %0b1]
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?: (lte size 8) [8 %0b10]
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[16 %0b11]
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+| %atomics
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::
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+$ private-key @uwprivatekey
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+$ signature @uwsignature
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:: $rank: which kind of ship address, by length
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::
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:: 0b0: galaxy or star -- 2 bytes
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:: 0b1: planet -- 4 bytes
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:: 0b10: moon -- 8 bytes
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:: 0b11: comet -- 16 bytes
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::
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+$ rank ?(%0b0 %0b1 %0b10 %0b11)
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+$ byuts [wid=@ud dat=@ux]
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::
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+| %kinetics
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@ -553,25 +393,6 @@
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=her=public-key
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her-sponsor=ship
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== ==
|
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:: $dyad: pair of sender and receiver ships
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::
|
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+$ dyad [sndr=ship rcvr=ship]
|
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:: $packet: noun representation of an ames datagram packet
|
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::
|
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:: Roundtrips losslessly through atom encoding and decoding.
|
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::
|
||||
:: .origin is ~ unless the packet is being forwarded. If present,
|
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:: it's an atom that encodes a route to another ship, such as an IPv4
|
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:: address. Routes are opaque to Arvo and only have meaning in the
|
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:: interpreter. This enforces that Ames is transport-agnostic.
|
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::
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+$ packet
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$: dyad
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sndr-tick=@ubC
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rcvr-tick=@ubC
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origin=(unit @uxaddress)
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content=@uxcontent
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==
|
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:: $open-packet: unencrypted packet payload, for comet self-attestation
|
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::
|
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:: This data structure gets signed and jammed to form the .contents
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@ -687,22 +508,6 @@
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--
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--
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::
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+$ twit :: signed request
|
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$: signature=@
|
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peep
|
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==
|
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::
|
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+$ peep :: request data
|
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$: =path
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num=@ud
|
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==
|
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::
|
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+$ rawr :: response packet ::TODO meow
|
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$: sig=@
|
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siz=@ud
|
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byts
|
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==
|
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::
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+$ roar :: response message
|
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$: sig=@
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dat=$@(~ (cask))
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@ -1286,7 +1091,7 @@
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--
|
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:: |per-event: inner event-handling core
|
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::
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~% %per-event ..decode-packet ~
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~% %per-event ..trace ~
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|%
|
||||
++ per-event
|
||||
=| moves=(list move)
|
||||
|
||||
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Reference in New Issue
Block a user