:: btc-provider.hoon :: Proxy that serves a BTC full node and ElectRS address indexer :: :: Subscriptions: none :: To Subscribers: /clients :: current connection state :: results/errors of RPC calls :: :: Scrys :: x/is-whitelisted/SHIP: bool, whether ship is whitelisted :: /- btc, json-rpc /+ *btc-provider, dbug, default-agent, groupl=group, resource |% +$ versioned-state $% state-0 == :: +$ state-0 [%0 =host-info =whitelist] :: +$ card card:agent:gall :: -- %- agent:dbug =| state-0 =* state - ^- agent:gall =< |_ =bowl:gall +* this . def ~(. (default-agent this %|) bowl) hc ~(. +> bowl) :: ++ on-init ^- (quip card _this) ~& > '%btc-provider initialized successfully' =| wl=^whitelist :- ~ %_ this host-info ['' connected=%.n %main block=0 clients=*(set ship)] whitelist wl(public %.n, kids %.n) == :: ++ on-save ^- vase !>(state) :: ++ on-load |= old-state=vase ^- (quip card _this) ~& > '%btc-provider recompiled successfully ' `this(state !<(versioned-state old-state)) :: ++ on-poke |= [=mark =vase] ^- (quip card _this) ?> ?|((team:title our.bowl src.bowl) (is-client:hc src.bowl)) =^ cards state ?+ mark (on-poke:def mark vase) %btc-provider-command ?> (team:title our.bowl src.bowl) (handle-command:hc !<(command vase)) %btc-provider-action (handle-action:hc !<(action vase)) == [cards this] :: ++ on-watch |= pax=path ^- (quip card _this) ?> ?=([%clients *] pax) ?. (is-whitelisted:hc src.bowl) ~& >>> "btc-provider: blocked client {}" [~[[%give %kick ~ ~]] this] ~& > "btc-provider: accepted client {}" :- do-ping:hc this(clients.host-info (~(put in clients.host-info) src.bowl)) :: ++ on-arvo |= [=wire =sign-arvo] ^- (quip card _this) :: check for connectivity every 30 seconds :: ?: ?=([%ping-timer *] wire) [do-ping:hc this] =^ cards state ?+ +<.sign-arvo (on-arvo:def wire sign-arvo) %http-response (handle-rpc-response:hc wire client-response.sign-arvo) == [cards this] :: ++ on-peek |= pax=path ^- (unit (unit cage)) ?+ pax (on-peek:def pax) [%x %is-whitelisted @t ~] ``noun+!>((is-whitelisted:hc (ship (slav %p +>-.pax)))) :: [%x %is-client @t ~] ``noun+!>((is-client (ship (slav %p +>-.pax)))) == :: ++ on-leave on-leave:def ++ on-agent on-agent:def ++ on-fail on-fail:def -- :: helper core |_ =bowl:gall ++ handle-command |= comm=command ^- (quip card _state) ?- -.comm %set-credentials :- do-ping state(host-info [api-url.comm connected=%.n network.comm block=0 clients=*(set ship)]) :: %add-whitelist ?- -.wt.comm %public `state(public.whitelist %.y) :: %kids `state(kids.whitelist %.y) :: %users `state(users.whitelist (~(uni in users.whitelist) users.wt.comm)) :: %groups `state(groups.whitelist (~(uni in groups.whitelist) groups.wt.comm)) == :: %remove-whitelist =. state ?- -.wt.comm %public state(public.whitelist %.n) :: %kids state(kids.whitelist %.n) :: %users state(users.whitelist (~(dif in users.whitelist) users.wt.comm)) :: %groups state(groups.whitelist (~(dif in groups.whitelist) groups.wt.comm)) == clean-client-list == :: if not connected, only %ping action is allowed :: ++ handle-action |= act=action ^- (quip card _state) ?. ?|(connected.host-info =(-.act %ping)) ~& >>> "Not connected to RPC" [~[(send-update [%| %not-connected 500])] state] ?: ?&(?=(%check-network -.act) ?!(=(network.act network.host-info))) %- (slog ~[leaf+"network mismatch with client {}"]) (kick-client src.bowl) =/ ract=action:rpc-types ?+ -.act ~|("Invalid action" !!) %address-info [%get-address-info address.act] :: %tx-info [%get-tx-vals txid.act] :: %raw-tx [%get-raw-tx txid.act] :: %broadcast-tx [%broadcast-tx rawtx.act] :: %ping [%get-block-info ~] == [~[(req-card act ract)] state] :: ++ req-card |= [act=action ract=action:rpc-types] =| out=outbound-config:iris =/ req=request:http (gen-request host-info ract) [%pass (rpc-wire act) %arvo %i %request req out] :: wire structure: /action-tas/now :: ++ rpc-wire |= act=action ^- wire /[-.act]/[(scot %ux (cut 3 [0 20] eny.bowl))] :: ++ kick-client |= client=ship ^- (quip card _state) ~& >>> "dropping client {}" :- ~[[%give %kick ~[/clients] `client]] state(clients.host-info (~(dif in clients.host-info) (sy ~[client]))) :: :: Handles HTTP responses from RPC servers. Parses for errors, then handles response. :: For actions that require collating multiple RPC calls, uses req-card to call out :: to RPC again if more information is required. :: ++ handle-rpc-response |= [=wire response=client-response:iris] ^- (quip card _state) ?. ?=(%finished -.response) `state =* status status-code.response-header.response :: handle error types: connection errors, RPC errors (in order) :: =^ conn-err state (connection-error status) ?^ conn-err :_ state(connected.host-info %.n) ~[(send-status [%disconnected ~]) (send-update [%| u.conn-err])] :: %+ handle-rpc-result wire %- parse-result:rpc (get-rpc-response response) :: ++ connection-error |= status=@ud ^- [(unit error) _state] ?+ status [`[%rpc-error ~] state] %200 [~ state] %400 [`[%bad-request status] state] %401 [`[%no-auth status] state(connected.host-info %.n)] %502 [`[%not-connected status] state(connected.host-info %.n)] %504 [`[%not-connected status] state(connected.host-info %.n)] == :: ++ handle-rpc-result |= [=wire r=result:rpc-types] ^- (quip card _state) ?+ -.wire ~|("Unexpected HTTP response" !!) %address-info ?> ?=([%get-address-info *] r) :_ state ~[(send-update [%.y %address-info +.r])] :: %tx-info ?> ?=([%get-tx-vals *] r) :_ state ~[(send-update [%.y %tx-info +.r])] :: %raw-tx ?> ?=([%get-raw-tx *] r) :_ state ~[(send-update [%.y %raw-tx +.r])] :: %broadcast-tx ?> ?=([%broadcast-tx *] r) :_ state ~[(send-update [%.y %broadcast-tx +.r])] :: %ping ?> ?=([%get-block-info *] r) :_ state(connected.host-info %.y, block.host-info block.r) ?: =(block.host-info block.r) ~[(send-status [%connected network.host-info block.r fee.r])] ~[(send-status [%new-block network.host-info block.r fee.r blockhash.r blockfilter.r])] == :: ++ send-status |= =status ^- card %- ?: ?=(%new-block -.status) ~&(>> "%new-block: {}" same) same [%give %fact ~[/clients] %btc-provider-status !>(status)] :: ++ send-update |= =update ^- card =+ c=[%give %fact ~[/clients] %btc-provider-update !>(update)] ?: ?=(%.y -.update) :: ~& >> "prov. update: {}" c ~& >> "prov. err: {}" c :: ++ is-whitelisted |= user=ship ^- ? |^ ?| public.whitelist =(our.bowl user) ?&(kids.whitelist is-kid) (~(has in users.whitelist) user) in-group == ++ is-kid =(our.bowl (sein:title our.bowl now.bowl user)) ++ in-group =/ gs ~(tap in groups.whitelist) |- ?~ gs %.n ?: (~(is-member groupl bowl) user (en-path:resource i.gs)) %.y $(gs t.gs) :: .^((unit group:g) %gx ;:(weld /=group-store=/groups p /noun)) -- :: +clean-client-list: remove clients who are no longer whitelisted :: called after a whitelist change :: ++ clean-client-list ^- (quip card _state) =/ to-kick=(set ship) %- sy %+ murn ~(tap in clients.host-info) |= c=ship ^- (unit ship) ?:((is-whitelisted c) ~ `c) :_ state(clients.host-info (~(dif in clients.host-info) to-kick)) %+ turn ~(tap in to-kick) |=(c=ship [%give %kick ~[/clients] `c]) :: ++ is-client |= user=ship ^- ? (~(has in clients.host-info) user) :: ++ start-ping-timer |= interval=@dr ^- card [%pass /ping-timer %arvo %b %wait (add now.bowl interval)] :: ++ do-ping ^- (list card) =/ act=action [%ping ~] :~ :* %pass /ping/[(scot %da now.bowl)] %agent [our.bowl %btc-provider] %poke %btc-provider-action !>(act) == (start-ping-timer ~s30) == --