!: :: lighter than eyre :: |= pit=vase =, eyre :: internal data structures :: => =~ :: :: internal data structures that won't go in zuse :: |% +$ move :: $: :: duct: request identifier :: =duct :: :: card=(wind note gift:able) == :: +note: private request from http-server to another vane :: +$ note $% :: %b: to behn :: $: %b :: :: $% [%rest p=@da] [%wait p=@da] == == :: %d: to dill :: $: %d :: :: $% [%flog =flog:dill] == == :: %f: to ford :: $: %f :: :: $% [%build live=? schematic=schematic:ford] [%kill ~] == == :: %g: to gall :: $: %g :: :: $>(%deal task:able:gall) == == :: +sign: private response from another vane to ford :: +$ sign $% :: %b: from behn :: $: %b :: :: $% [%wake error=(unit tang)] == == :: %f: from ford :: $: %f :: :: $% [%made date=@da result=made-result:ford] == == :: %g: from gall :: $: %g :: :: gift:able:gall :: $>(%unto gift:able:gall) == == -- :: more structures :: |% ++ axle $: :: date: date at which http-server's state was updated to this data structure :: date=%~2019.10.6 :: server-state: state of inbound requests :: =server-state == :: +server-state: state relating to open inbound HTTP connections :: +$ server-state $: :: bindings: actions to dispatch to when a binding matches :: :: Eyre is responsible for keeping its bindings sorted so that it :: will trigger on the most specific binding first. Eyre should send :: back an error response if an already bound binding exists. :: :: TODO: It would be nice if we had a path trie. We could decompose :: the :binding into a (map (unit @t) (trie knot =action)). :: bindings=(list [=binding =duct =action]) :: connections: open http connections not fully complete :: connections=(map duct outstanding-connection) :: authentication-state: state managed by the +authentication core :: =authentication-state :: channel-state: state managed by the +channel core :: =channel-state :: domains: domain-names that resolve to us :: domains=(set turf) :: http-config: our server configuration :: =http-config :: ports: live servers :: ports=[insecure=@ud secure=(unit @ud)] :: outgoing-duct: to unix :: outgoing-duct=duct == :: +outstanding-connection: open http connections not fully complete: :: :: This refers to outstanding connections where the connection to :: outside is opened and we are currently waiting on ford or an app to :: produce the results. :: +$ outstanding-connection $: :: action: the action that had matched :: =action :: inbound-request: the original request which caused this connection :: =inbound-request :: response-header: set when we get our first %start :: response-header=(unit response-header:http) :: bytes-sent: the total bytes sent in response :: bytes-sent=@ud == :: +action: the action to take when a binding matches an incoming request :: +$ action $% :: dispatch to a generator :: [%gen =generator] :: dispatch to an application :: [%app app=term] :: internal authentication page :: [%authentication ~] :: gall channel system :: [%channel ~] :: respond with the default file not found page :: [%four-oh-four ~] == :: +authentication-state: state used in the login system :: +$ authentication-state $: :: sessions: a mapping of session cookies to session information :: sessions=(map @uv session) == :: +session: server side data about a session :: +$ session $: :: expiry-time: when this session expires :: :: We check this server side, too, so we aren't relying on the browser :: to properly handle cookie expiration as a security mechanism. :: expiry-time=@da :: :: TODO: We should add a system for individual capabilities; we should :: mint some sort of long lived cookie for mobile apps which only has :: access to a single application path. == :: channel-state: state used in the channel system :: +$ channel-state $: :: session: mapping between an arbitrary key to a channel :: session=(map @t channel) :: by-duct: mapping from ducts to session key :: duct-to-key=(map duct @t) == :: +timer: a reference to a timer so we can cancel or update it. :: +$ timer $: :: date: time when the timer will fire :: date=@da :: duct: duct that set the timer so we can cancel :: =duct == :: channel: connection to the browser :: :: Channels are the main method where a webpage communicates with Gall :: apps. Subscriptions and pokes are issues with PUT requests on a path, :: while GET requests on that same path open a persistent EventSource :: channel. :: :: The EventSource API is a sequence number based API that browser provide :: which allow the server to push individual events to the browser over a :: connection held open. In case of reconnection, the browser will send a :: 'Last-Event-Id: ' header to the server; the server then resends all :: events since then. :: +$ channel $: :: channel-state: expiration time or the duct currently listening :: :: For each channel, there is at most one open EventSource :: connection. A 400 is issues on duplicate attempts to connect to the :: same channel. When an EventSource isn't connected, we set a timer :: to reap the subscriptions. This timer shouldn't be too short :: because the :: state=(each timer duct) :: next-id: next sequence number to use :: next-id=@ud :: events: unacknowledged events :: :: We keep track of all events where we haven't received a :: 'Last-Event-Id: ' response from the client or a per-poke {'ack': :: ...} call. When there's an active EventSource connection on this :: channel, we send the event but we still add it to events because we :: can't assume it got received until we get an acknowledgment. :: events=(qeu [id=@ud lines=wall]) :: subscriptions: gall subscriptions :: :: We maintain a list of subscriptions so if a channel times out, we :: can cancel all the subscriptions we've made. :: subscriptions=(map wire [ship=@p app=term =path duc=duct]) :: heartbeat: sse heartbeat timer :: heartbeat=(unit timer) == :: channel-request: an action requested on a channel :: +$ channel-request $% :: %ack: acknowledges that the client has received events up to :id :: [%ack event-id=@ud] :: %poke: pokes an application, translating :json to :mark. :: [%poke request-id=@ud ship=@p app=term mark=@tas =json] :: %watch: subscribes to an application path :: [%subscribe request-id=@ud ship=@p app=term =path] :: %leave: unsubscribes from an application path :: [%unsubscribe request-id=@ud subscription-id=@ud] :: %delete: kills a channel :: [%delete ~] == :: channel-timeout: the delay before a channel should be reaped :: ++ channel-timeout ~h12 -- :: utilities :: |% :: +combine-octs: combine multiple octs into one :: ++ combine-octs |= a=(list octs) ^- octs :- %+ roll a |= [=octs sum=@ud] (add sum p.octs) (can 3 a) :: +prune-events: removes all items from the front of the queue up to :id :: ++ prune-events |= [q=(qeu [id=@ud lines=wall]) id=@ud] ^+ q :: if the queue is now empty, that's fine :: ?: =(~ q) ~ :: =/ next=[item=[id=@ud lines=wall] _q] ~(get to q) :: if the head of the queue is newer than the acknowledged id, we're done :: ?: (gth id.item.next id) q :: otherwise, check next item :: $(q +:next) :: +parse-channel-request: parses a list of channel-requests :: :: Parses a json array into a list of +channel-request. If any of the items :: in the list fail to parse, the entire thing fails so we can 400 properly :: to the client. :: ++ parse-channel-request |= request-list=json ^- (unit (list channel-request)) :: parse top :: =, dejs-soft:format =- ((ar -) request-list) :: |= item=json ^- (unit channel-request) :: ?~ maybe-key=((ot action+so ~) item) ~ ?: =('ack' u.maybe-key) ((pe %ack (ot event-id+ni ~)) item) ?: =('poke' u.maybe-key) ((pe %poke (ot id+ni ship+(su fed:ag) app+so mark+(su sym) json+some ~)) item) ?: =('subscribe' u.maybe-key) %. item %+ pe %subscribe (ot id+ni ship+(su fed:ag) app+so path+(su ;~(pfix fas (more fas urs:ab))) ~) ?: =('unsubscribe' u.maybe-key) %. item %+ pe %unsubscribe (ot id+ni subscription+ni ~) ?: =('delete' u.maybe-key) `[%delete ~] :: if we reached this, we have an invalid action key. fail parsing. :: ~ :: +login-page: internal page to login to an Urbit :: ++ login-page |= [redirect-url=(unit @t) our=@p] ^- octs =+ redirect-str=?~(redirect-url "" (trip u.redirect-url)) %- as-octs:mimes:html %- crip %- en-xml:html ;html ;head ;meta(charset "utf-8"); ;meta(name "viewport", content "width=device-width, initial-scale=1, shrink-to-fit=no"); ;title:"OS1" ;style:''' @import url("https://rsms.me/inter/inter.css"); @font-face { font-family: "Source Code Pro"; src: url("https://storage.googleapis.com/media.urbit.org/fonts/scp-regular.woff"); font-weight: 400; } html, body { font-family: Inter, sans-serif; height: 100%; margin: 0 !important; width: 100%; background: #fff; color: #000; -webkit-font-smoothing: antialiased; line-height: 1.5; font-size: 12pt; } a, a:visited { color: #000; text-decoration: none; font-size: 0.875rem; } p { margin-block-start: 0; margin-block-end: 0; font-size: 0.875rem; } input { width: 100%; padding: 0.75rem; border: 1px solid #e6e6e6; margin-top: 0.25rem; margin-bottom: 1rem; font-size: 0.875rem; } input:focus { outline: 0; border: 1px solid #000; } button { -webkit-appearance: none; padding: 0.75rem; background-color: #eee; border: 1px solid #d1d2d3; color: #666; font-size: 0.875rem; border-radius: 0; } footer { position: absolute; bottom: 0; } footer span { font-size: 0.875rem; } .mono { font-family: "Source Code Pro", monospace; } .gray2 { color: #7f7f7f; } .f9 { font-size: 0.75rem; } .relative { position: relative; } .absolute { position: absolute; } .w-100 { width: 100%; } .tr { text-align: right; } .pb2 { padding-bottom: 0.5rem; } .pr1 { padding-right: 0.25rem; } .pr2 { padding-right: .5rem; } .dn { display: none; } #main { width: 100%; height: 100%; } #inner { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); } @media all and (prefers-color-scheme: dark) { html, body { background-color: #333; color: #fff; } a, a:visited { color: #fff; } input { background: #333; color: #fff; border: 1px solid #7f7f7f; } input:focus { border: 1px solid #fff; } } @media all and (min-width: 34.375rem) { .tc-ns { text-align: center; } .pr0-ns { padding-right: 0; } .dib-ns { display: inline-block; } } ''' == ;body ;div#main ;div#inner ;p:"Urbit ID" ;input(value "{(scow %p our)}", disabled "true", class "mono"); ;p:"Access Key" ;p.f9.gray2 ; Get key from Bridge, or ;span.mono.pr1:"+code" ; in dojo == ;form(action "/~/login", method "post", enctype "application/x-www-form-urlencoded") ;input =type "password" =name "password" =placeholder "sampel-ticlyt-migfun-falmel" =class "mono" =autofocus "true"; ;input(type "hidden", name "redirect", value redirect-str); ;button(type "submit"):"Continue" == == ;footer.absolute.w-100 ;div.relative.w-100.tr.tc-ns ;span(class "absolute", style "left: 8px; bottom: 8px;") ; OS 1 ;span(class "gray2", style "margin-left: 4px;"): v0.0.1 == ;p.pr2.pr0-ns.pb2 ;a(href "https://bridge.urbit.org", target "_blank") ;span.dn.dib-ns.pr1:"Open" ; Bridge ↗ == ;a =href "https://urbit.org/using/install/#id" =style "margin-left: 8px; color: #2aa779;" =target "_blank" ; Purchase ;span.dn.dib-ns.pr1:"an Urbit ID" ; ↗ == == == == == == == :: +render-tang-to-marl: renders a tang and adds
tags between each line :: ++ render-tang-to-marl |= {wid/@u tan/tang} ^- marl =/ raw=(list tape) (zing (turn tan |=(a/tank (wash 0^wid a)))) :: |- ^- marl ?~ raw ~ [;/(i.raw) ;br; $(raw t.raw)] :: +render-tang-to-wall: renders tang as text lines :: ++ render-tang-to-wall |= {wid/@u tan/tang} ^- wall (zing (turn tan |=(a=tank (wash 0^wid a)))) :: +wall-to-octs: text to binary output :: ++ wall-to-octs |= =wall ^- (unit octs) :: ?: =(~ wall) ~ :: :- ~ %- as-octs:mimes:html %- crip %- zing %+ turn wall |= t=tape "{t}\0a" :: +internal-server-error: 500 page, with a tang :: ++ internal-server-error |= [authorized=? url=@t t=tang] ^- octs %- as-octs:mimes:html %- crip %- en-xml:html ;html ;head ;title:"500 Internal Server Error" == ;body ;h1:"Internal Server Error" ;p:"There was an error while handling the request for {<(trip url)>}." ;* ?: authorized ;= ;code:"*{(render-tang-to-marl 80 t)}" == ~ == == :: +error-page: error page, with an error string if logged in :: ++ error-page |= [code=@ud authorized=? url=@t t=tape] ^- octs :: =/ code-as-tape=tape (format-ud-as-integer code) =/ message=tape ?: =(code 400) "Bad Request" ?: =(code 403) "Forbidden" ?: =(code 404) "Not Found" "Unknown Error" :: %- as-octs:mimes:html %- crip %- en-xml:html ;html ;head ;title:"{code-as-tape} {message}" == ;body ;h1:"{message}" ;p:"There was an error while handling the request for {<(trip url)>}." ;* ?: authorized ;= ;code:"{t}" == ~ == == :: +channel-js: the urbit javascript interface :: :: TODO: Must send 'acks' to the server. :: ++ channel-js ^- octs %- as-octs:mimes:html ''' class Channel { constructor() { // unique identifier: current time and random number // this.uid = new Date().getTime().toString() + "-" + Math.random().toString(16).slice(-6); this.requestId = 1; // the currently connected EventSource // this.eventSource = null; // the id of the last EventSource event we received // this.lastEventId = 0; // this last event id acknowledgment sent to the server // this.lastAcknowledgedEventId = 0; // a registry of requestId to successFunc/failureFunc // // These functions are registered during a +poke and are executed // in the onServerEvent()/onServerError() callbacks. Only one of // the functions will be called, and the outstanding poke will be // removed after calling the success or failure function. // this.outstandingPokes = new Map(); // a registry of requestId to subscription functions. // // These functions are registered during a +subscribe and are // executed in the onServerEvent()/onServerError() callbacks. The // event function will be called whenever a new piece of data on this // subscription is available, which may be 0, 1, or many times. The // disconnect function may be called exactly once. // this.outstandingSubscriptions = new Map(); this.deleteOnUnload(); } deleteOnUnload() { window.addEventListener("unload", (event) => { this.delete(); }); } // sends a poke to an app on an urbit ship // poke(ship, app, mark, json, successFunc, failureFunc) { let id = this.nextId(); this.outstandingPokes.set( id, { success: successFunc, fail: failureFunc } ); this.sendJSONToChannel({ id, action: "poke", ship, app, mark, json }); } // subscribes to a path on an specific app and ship. // // Returns a subscription id, which is the same as the same internal id // passed to your Urbit. subscribe( ship, app, path, connectionErrFunc = () => {}, eventFunc = () => {}, quitFunc = () => {}) { let id = this.nextId(); this.outstandingSubscriptions.set( id, { err: connectionErrFunc, event: eventFunc, quit: quitFunc } ); this.sendJSONToChannel({ id, action: "subscribe", ship, app, path }); return id; } // quit the channel // delete() { let id = this.nextId(); navigator.sendBeacon(this.channelURL(), JSON.stringify([{ id, action: "delete" }])); } // unsubscribe to a specific subscription // unsubscribe(subscription) { let id = this.nextId(); this.sendJSONToChannel({ id, action: "unsubscribe", subscription }); } // sends a JSON command command to the server. // sendJSONToChannel(j) { let req = new XMLHttpRequest(); req.open("PUT", this.channelURL()); req.setRequestHeader("Content-Type", "application/json"); if (this.lastEventId == this.lastAcknowledgedEventId) { let x = JSON.stringify([j]); req.send(x); } else { // we add an acknowledgment to clear the server side queue // // The server side puts messages it sends us in a queue until we // acknowledge that we received it. // let x = JSON.stringify( [{action: "ack", "event-id": parseInt(this.lastEventId)}, j] ); req.send(x); this.lastEventId = this.lastAcknowledgedEventId; } this.connectIfDisconnected(); } // connects to the EventSource if we are not currently connected // connectIfDisconnected() { if (this.eventSource) { return; } this.eventSource = new EventSource(this.channelURL(), {withCredentials:true}); this.eventSource.onmessage = e => { this.lastEventId = e.lastEventId; let obj = JSON.parse(e.data); if (obj.response == "poke") { let funcs = this.outstandingPokes.get(obj.id); if (obj.hasOwnProperty("ok")) { funcs["success"](); } else if (obj.hasOwnProperty("err")) { funcs["fail"](obj.err); } else { console.error("Invalid poke response: ", obj); } this.outstandingPokes.delete(obj.id); } else if (obj.response == "subscribe") { // on a response to a subscribe, we only notify the caller on err // let funcs = this.outstandingSubscriptions.get(obj.id); if (obj.hasOwnProperty("err")) { funcs["err"](obj.err); this.outstandingSubscriptions.delete(obj.id); } } else if (obj.response == "diff") { let funcs = this.outstandingSubscriptions.get(obj.id); funcs["event"](obj.json); } else if (obj.response == "quit") { let funcs = this.outstandingSubscriptions.get(obj.id); funcs["quit"](obj); this.outstandingSubscriptions.delete(obj.id); } else { console.log("Unrecognized response: ", e); } } this.eventSource.onerror = e => { console.error("eventSource error:", e); this.delete(); } } channelURL() { return "/~/channel/" + this.uid; } nextId() { return this.requestId++; } }; ''' :: +format-ud-as-integer: prints a number for consumption outside urbit :: ++ format-ud-as-integer |= a=@ud ^- tape ?: =(0 a) ['0' ~] %- flop |- ^- tape ?:(=(0 a) ~ [(add '0' (mod a 10)) $(a (div a 10))]) :: +host-matches: %.y if the site :binding should be used to handle :host :: ++ host-matches |= [binding=(unit @t) host=(unit @t)] ^- ? :: if the binding allows for matching anything, match :: ?~ binding %.y :: if the host is ~, that means we're trying to bind nothing to a real :: binding. fail. :: ?~ host %.n :: otherwise, do a straight comparison :: =(u.binding u.host) :: +path-matches: returns %.y if :prefix is a prefix of :full :: ++ path-matches |= [prefix=path full=path] ^- ? ?~ prefix %.y ?~ full %.n ?. =(i.prefix i.full) %.n $(prefix t.prefix, full t.full) :: +simplified-url-parser: returns [(each @if @t) (unit port=@ud)] :: ++ simplified-url-parser ;~ plug ;~ pose %+ stag %ip =+ tod=(ape:ag ted:ab) %+ bass 256 ;~(plug tod (stun [3 3] ;~(pfix dot tod))) :: (stag %site (cook crip (star ;~(pose dot alp)))) == ;~ pose (stag ~ ;~(pfix col dim:ag)) (easy ~) == == :: +per-server-event: per-event server core :: ++ per-server-event :: gate that produces the +per-server-event core from event information :: |= [[our=@p eny=@ =duct now=@da scry=sley] state=server-state] =/ eyre-id (scot %ta (cat 3 'eyre_' (scot %uv (sham duct)))) |% :: +request-local: bypass authentication for local lens connections :: ++ request-local |= [secure=? =address =request:http] ^- [(list move) server-state] :: =/ act [%app app=%lens] :: =/ connection=outstanding-connection [act [& secure address request] ~ 0] :: =. connections.state (~(put by connections.state) duct connection) :: :_ state (subscribe-to-app app.act inbound-request.connection) :: +request: starts handling an inbound http request :: ++ request |= [secure=? =address =request:http] ^- [(list move) server-state] :: =/ host (get-header:http 'host' header-list.request) =/ action (get-action-for-binding host url.request) :: =/ authenticated (request-is-logged-in:authentication request) :: record that we started an asynchronous response :: =/ connection=outstanding-connection [action [authenticated secure address request] ~ 0] =. connections.state (~(put by connections.state) duct connection) :: ?- -.action :: %gen :: =- [[duct %pass /run-build %f %build live=%.n schematic=-]~ state] :: :+ %call :+ %call [%core [[our desk.generator.action] (flop path.generator.action)]] :: TODO: Figure out what goes in generators. We need to slop the :: prelude with the arguments passed in. :: [%$ %noun !>([[now=now eny=eny bek=[our desk.generator.action [%da now]]] ~ ~])] [%$ %noun !>([authenticated request])] :: %app :_ state (subscribe-to-app app.action inbound-request.connection) :: %authentication (handle-request:authentication secure address request) :: %channel (handle-request:by-channel secure authenticated address request) :: %four-oh-four %^ return-static-data-on-duct 404 'text/html' (error-page 404 authenticated url.request ~) == :: +subscribe-to-app: subscribe to app and poke it with request data :: ++ subscribe-to-app |= [app=term =inbound-request:eyre] ^- (list move) :~ :* duct %pass /watch-response/[eyre-id] %g %deal [our our] app %watch /http-response/[eyre-id] == :: :* duct %pass /run-app-request/[eyre-id] %g %deal [our our] app %poke %handle-http-request !>([eyre-id inbound-request]) == == :: +cancel-request: handles a request being externally aborted :: ++ cancel-request ^- [(list move) server-state] :: ?~ connection=(~(get by connections.state) duct) :: nothing has handled this connection :: [~ state] :: =. connections.state (~(del by connections.state) duct) :: ?- -.action.u.connection :: %gen :_ state [duct %pass /run-build %f %kill ~]~ :: %app :_ state :_ ~ :* duct %pass /watch-response/[eyre-id] %g %deal [our our] app.action.u.connection %leave ~ == :: %authentication [~ state] :: %channel on-cancel-request:by-channel :: %four-oh-four :: it should be impossible for a 404 page to be asynchronous :: !! == :: +return-static-data-on-duct: returns one piece of data all at once :: ++ return-static-data-on-duct |= [code=@ content-type=@t data=octs] ^- [(list move) server-state] :: %- handle-response :* %start :- status-code=code ^= headers :~ ['content-type' content-type] ['content-length' (crip (format-ud-as-integer p.data))] == data=[~ data] complete=%.y == :: +authentication: per-event authentication as this Urbit's owner :: :: Right now this hard codes the authentication page using the old +code :: system, but in the future should be pluggable so we can use U2F or :: WebAuthn or whatever is more secure than passwords. :: ++ authentication |% :: +handle-request: handles an http request for the :: ++ handle-request |= [secure=? =address =request:http] ^- [(list move) server-state] :: :: if we received a simple get, just return the page :: ?: =('GET' method.request) :: parse the arguments out of request uri :: =+ request-line=(parse-request-line url.request) %^ return-static-data-on-duct 200 'text/html' (login-page (get-header:http 'redirect' args.request-line) our) :: if we are not a post, return an error :: ?. =('POST' method.request) (return-static-data-on-duct 400 'text/html' (login-page ~ our)) :: we are a post, and must process the body type as form data :: ?~ body.request (return-static-data-on-duct 400 'text/html' (login-page ~ our)) :: =/ parsed=(unit (list [key=@t value=@t])) (rush q.u.body.request yquy:de-purl:html) ?~ parsed (return-static-data-on-duct 400 'text/html' (login-page ~ our)) :: ?~ password=(get-header:http 'password' u.parsed) (return-static-data-on-duct 400 'text/html' (login-page ~ our)) :: check that the password is correct :: ?. =(u.password code) (return-static-data-on-duct 400 'text/html' (login-page ~ our)) :: mint a unique session cookie :: =/ session=@uv |- =/ candidate=@uv (~(raw og eny) 128) ?. (~(has by sessions.authentication-state.state) candidate) candidate $(eny (shas %try-again candidate)) :: record cookie and record expiry time :: =/ expires-in=@dr ~d7 =. sessions.authentication-state.state (~(put by sessions.authentication-state.state) session (add now expires-in)) :: =/ max-age=tape (format-ud-as-integer `@ud`(div (msec:milly expires-in) 1.000)) =/ cookie-line %- crip "urbauth-{}={}; Path=/; Max-Age={max-age}" :: ?~ redirect=(get-header:http 'redirect' u.parsed) %- handle-response :* %start :- status-code=200 ^= headers :~ ['set-cookie' cookie-line] == data=~ complete=%.y == :: =/ actual-redirect ?:(=(u.redirect '') '/' u.redirect) %- handle-response :* %start :- status-code=307 ^= headers :~ ['location' actual-redirect] ['set-cookie' cookie-line] == data=~ complete=%.y == :: +request-is-logged-in: checks to see if the request is authenticated :: :: We are considered logged in if this request has an urbauth :: Cookie which is not expired. :: ++ request-is-logged-in |= =request:http ^- ? :: are there cookies passed with this request? :: :: TODO: In HTTP2, the client is allowed to put multiple 'Cookie' :: headers. :: ?~ cookie-header=(get-header:http 'cookie' header-list.request) %.n :: is the cookie line is valid? :: ?~ cookies=(rush u.cookie-header cock:de-purl:html) %.n :: is there an urbauth cookie? :: ?~ urbauth=(get-header:http (crip "urbauth-{}") u.cookies) %.n :: is this formatted like a valid session cookie? :: ?~ session-id=(rush u.urbauth ;~(pfix (jest '0v') viz:ag)) %.n :: is this a session that we know about? :: ?~ session=(~(get by sessions.authentication-state.state) `@uv`u.session-id) %.n :: is this session still valid? :: (lte now expiry-time.u.session) :: +code: returns the same as |code :: ++ code ^- @ta :: =+ pax=/(scot %p our)/code/(scot %da now)/(scot %p our) =+ res=((sloy scry) [151 %noun] %j pax) :: (rsh 3 1 (scot %p (@ (need (need res))))) -- :: +channel: per-event handling of requests to the channel system :: :: Eyre offers a remote interface to your Urbit through channels, which :: are persistent connections on the server which can be disconnected and :: reconnected on the client. :: ++ by-channel :: moves: the moves to be sent out at the end of this event, reversed :: =| moves=(list move) |% :: +handle-request: handles an http request for the subscription system :: ++ handle-request |= [secure=? authenticated=? =address =request:http] ^- [(list move) server-state] :: if we're not authenticated error, but don't redirect. :: :: We don't redirect because subscription stuff is never the toplevel :: page; issuing a redirect won't help. :: ?. authenticated %^ return-static-data-on-duct 403 'text/html' (error-page 403 authenticated url.request "unauthenticated channel usage") :: parse out the path key the subscription is on :: =+ request-line=(parse-request-line url.request) ?. ?=([@t @t @t ~] site.request-line) :: url is not of the form '/~/channel/' :: %^ return-static-data-on-duct 400 'text/html' (error-page 400 authenticated url.request "malformed channel url") :: channel-id: unique channel id parsed out of url :: =+ channel-id=i.t.t.site.request-line :: ?: ?& =('channel' channel-id) =([~ ~.js] ext.request-line) == :: client is requesting the javascript shim :: (return-static-data-on-duct 200 'text/javascript' channel-js) :: ?: =('PUT' method.request) :: PUT methods starts/modifies a channel, and returns a result immediately :: (on-put-request channel-id request) :: ?: =('GET' method.request) (on-get-request channel-id request) ?: =('POST' method.request) :: POST methods are used solely for deleting channels (on-put-request channel-id request) :: ~& %session-not-a-put [~ state] :: +on-cancel-request: cancels an ongoing subscription :: :: One of our long lived sessions just got closed. We put the associated :: session back into the waiting state. :: ++ on-cancel-request ^- [(list move) server-state] :: lookup the session id by duct :: ?~ maybe-channel-id=(~(get by duct-to-key.channel-state.state) duct) ~& [%canceling-nonexistent-channel duct] [~ state] :: ~& [%canceling-cancel duct] :: =/ maybe-session (~(get by session.channel-state.state) u.maybe-channel-id) ?~ maybe-session [~ state] :: =/ heartbeat-cancel=(list move) ?~ heartbeat.u.maybe-session ~ :~ %^ cancel-heartbeat-move u.maybe-channel-id date.u.heartbeat.u.maybe-session duct.u.heartbeat.u.maybe-session == :: =/ expiration-time=@da (add now channel-timeout) :: :- %+ weld heartbeat-cancel [(set-timeout-move u.maybe-channel-id expiration-time) moves] %_ state session.channel-state %+ ~(jab by session.channel-state.state) u.maybe-channel-id |= =channel :: if we are canceling a known channel, it should have a listener :: ?> ?=([%| *] state.channel) channel(state [%& [expiration-time duct]], heartbeat ~) :: duct-to-key.channel-state (~(del by duct-to-key.channel-state.state) duct) == :: +set-timeout-timer-for: sets a timeout timer on a channel :: :: This creates a channel if it doesn't exist, cancels existing timers :: if they're already set (we cannot have duplicate timers), and (if :: necessary) moves channels from the listening state to the expiration :: state. :: ++ update-timeout-timer-for |= channel-id=@t ^+ ..update-timeout-timer-for :: when our callback should fire :: =/ expiration-time=@da (add now channel-timeout) :: if the channel doesn't exist, create it and set a timer :: ?~ maybe-channel=(~(get by session.channel-state.state) channel-id) :: %_ ..update-timeout-timer-for session.channel-state.state %+ ~(put by session.channel-state.state) channel-id [[%& expiration-time duct] 0 ~ ~ ~] :: moves [(set-timeout-move channel-id expiration-time) moves] == :: if the channel has an active listener, we aren't setting any timers :: ?: ?=([%| *] state.u.maybe-channel) ..update-timeout-timer-for :: we have a previous timer; cancel the old one and set the new one :: %_ ..update-timeout-timer-for session.channel-state.state %+ ~(jab by session.channel-state.state) channel-id |= =channel channel(state [%& [expiration-time duct]]) :: moves :* (cancel-timeout-move channel-id p.state.u.maybe-channel) (set-timeout-move channel-id expiration-time) moves == == :: ++ set-heartbeat-move |= [channel-id=@t heartbeat-time=@da] ^- move :^ duct %pass /channel/heartbeat/[channel-id] [%b %wait heartbeat-time] :: ++ cancel-heartbeat-move |= [channel-id=@t heartbeat-time=@da =^duct] ^- move :^ duct %pass /channel/heartbeat/[channel-id] [%b %rest heartbeat-time] :: ++ set-timeout-move |= [channel-id=@t expiration-time=@da] ^- move [duct %pass /channel/timeout/[channel-id] %b %wait expiration-time] :: ++ cancel-timeout-move |= [channel-id=@t expiration-time=@da =^duct] ^- move :^ duct %pass /channel/timeout/[channel-id] [%b %rest expiration-time] :: +on-get-request: handles a GET request :: :: GET requests open a channel for the server to send events to the :: client in text/event-stream format. :: ++ on-get-request |= [channel-id=@t =request:http] ^- [(list move) server-state] :: if there's no channel-id, we must 404 :: ?~ maybe-channel=(~(get by session.channel-state.state) channel-id) %^ return-static-data-on-duct 404 'text/html' (error-page 404 %.y url.request ~) :: if there's already a duct listening to this channel, we must 400 :: ?: ?=([%| *] state.u.maybe-channel) %^ return-static-data-on-duct 400 'text/html' (error-page 400 %.y url.request "channel already bound") :: when opening an event-stream, we must cancel our timeout timer :: =. moves [(cancel-timeout-move channel-id p.state.u.maybe-channel) moves] :: the request may include a 'Last-Event-Id' header :: =/ maybe-last-event-id=(unit @ud) ?~ maybe-raw-header=(get-header:http 'Last-Event-ID' header-list.request) ~ (rush u.maybe-raw-header dum:ag) :: flush events older than the passed in 'Last-Event-ID' :: =? state ?=(^ maybe-last-event-id) (acknowledge-events channel-id u.maybe-last-event-id) :: combine the remaining queued events to send to the client :: =/ event-replay=wall %- zing %- flop =/ queue events.u.maybe-channel =| events=(list wall) |- ^+ events ?: =(~ queue) events =^ head queue ~(get to queue) $(events [lines.p.head events]) :: send the start event to the client :: =^ http-moves state %- handle-response :* %start :- 200 :~ ['content-type' 'text/event-stream'] ['cache-control' 'no-cache'] ['connection' 'keep-alive'] == (wall-to-octs event-replay) complete=%.n == :: associate this duct with this session key :: =. duct-to-key.channel-state.state (~(put by duct-to-key.channel-state.state) duct channel-id) :: initialize sse heartbeat :: =/ heartbeat-time=@da (add now ~s20) =/ heartbeat (set-heartbeat-move channel-id heartbeat-time) :: clear the event queue, record the duct for future output and :: record heartbeat-time for possible future cancel :: =. session.channel-state.state %+ ~(jab by session.channel-state.state) channel-id |= =channel channel(events ~, state [%| duct], heartbeat (some [heartbeat-time duct])) :: [[heartbeat (weld http-moves moves)] state] :: +acknowledge-events: removes events before :last-event-id on :channel-id :: ++ acknowledge-events |= [channel-id=@t last-event-id=@u] ^- server-state %_ state session.channel-state %+ ~(jab by session.channel-state.state) channel-id |= =channel ^+ channel channel(events (prune-events events.channel last-event-id)) == :: +on-put-request: handles a PUT request :: :: PUT requests send commands from the client to the server. We receive :: a set of commands in JSON format in the body of the message. :: ++ on-put-request |= [channel-id=@t =request:http] ^- [(list move) server-state] :: error when there's no body :: ?~ body.request %^ return-static-data-on-duct 400 'text/html' (error-page 400 %.y url.request "no put body") :: if the incoming body isn't json, this is a bad request, 400. :: ?~ maybe-json=(de-json:html q.u.body.request) %^ return-static-data-on-duct 400 'text/html' (error-page 400 %.y url.request "put body not json") :: parse the json into an array of +channel-request items :: ?~ maybe-requests=(parse-channel-request u.maybe-json) %^ return-static-data-on-duct 400 'text/html' (error-page 400 %.y url.request "invalid channel json") :: while weird, the request list could be empty :: ?: =(~ u.maybe-requests) %^ return-static-data-on-duct 400 'text/html' (error-page 400 %.y url.request "empty list of actions") :: check for the existence of the channel-id :: :: if we have no session, create a new one set to expire in :: :channel-timeout from now. if we have one which has a timer, update :: that timer. :: =. ..on-put-request (update-timeout-timer-for channel-id) :: for each request, execute the action passed in :: =+ requests=u.maybe-requests :: gall-moves: put moves here first so we can flop for ordering :: :: TODO: Have an error state where any invalid duplicate subscriptions :: or other errors cause the entire thing to fail with a 400 and a tang. :: =| gall-moves=(list move) |- :: ?~ requests :: this is a PUT request; we must mark it as complete :: =^ http-moves state %- handle-response :* %start [status-code=200 headers=~] data=~ complete=%.y == :: [:(weld (flop gall-moves) http-moves moves) state] :: ?- -.i.requests %ack :: client acknowledges that they have received up to event-id :: %_ $ state (acknowledge-events channel-id event-id.i.requests) requests t.requests == :: %poke :: =. gall-moves :_ gall-moves ^- move :^ duct %pass /channel/poke/[channel-id]/(scot %ud request-id.i.requests) =, i.requests :* %g %deal `sock`[our ship] app `task:agent:gall`[%poke-as mark %json !>(json)] == :: $(requests t.requests) :: %subscribe :: =/ channel-wire=wire /channel/subscription/[channel-id]/(scot %ud request-id.i.requests) :: =. gall-moves :_ gall-moves ^- move :^ duct %pass channel-wire =, i.requests :* %g %deal [our ship] app `task:agent:gall`[%watch-as %json path] == :: =. session.channel-state.state %+ ~(jab by session.channel-state.state) channel-id |= =channel =, i.requests channel(subscriptions (~(put by subscriptions.channel) channel-wire [ship app path duct])) :: $(requests t.requests) :: %unsubscribe =/ channel-wire=wire /channel/subscription/[channel-id]/(scot %ud subscription-id.i.requests) :: =/ usession (~(get by session.channel-state.state) channel-id) ?~ usession $(requests t.requests) =/ subscriptions subscriptions:u.usession :: ?~ maybe-subscription=(~(get by subscriptions) channel-wire) :: the client sent us a weird request referring to a subscription :: which isn't active. :: ~& [%missing-subscription-in-unsubscribe channel-wire] $(requests t.requests) :: =. gall-moves :_ gall-moves ^- move :^ duc.u.maybe-subscription %pass channel-wire =, u.maybe-subscription :* %g %deal [our ship] app `task:agent:gall`[%leave ~] == :: =. session.channel-state.state %+ ~(jab by session.channel-state.state) channel-id |= =channel channel(subscriptions (~(del by subscriptions.channel) channel-wire)) :: $(requests t.requests) :: %delete =/ unitsession (~(get by session.channel-state.state) channel-id) :: ?~ unitsession $(requests t.requests) :: =/ session u.unitsession =. session.channel-state.state (~(del by session.channel-state.state) channel-id) :: =. gall-moves %+ weld gall-moves :: :: produce a list of moves which cancels every gall subscription :: %+ turn ~(tap by subscriptions.session) |= [channel-wire=wire ship=@p app=term =path duc=^duct] ^- move :: [duc %pass channel-wire [%g %deal [our ship] app %leave ~]] :: ?: ?=([%& *] state.session) =. gall-moves :_ gall-moves :: ^- move ?> ?=([%& *] state.session) :^ duct.p.state.session %pass /channel/timeout/[channel-id] [%b %rest date.p.state.session] :: $(requests t.requests) :: ?> ?=([%| *] state.session) =. duct-to-key.channel-state.state (~(del by duct-to-key.channel-state.state) p.state.session) :: ?~ heartbeat.session $(requests t.requests) =. gall-moves %+ snoc gall-moves %^ cancel-heartbeat-move channel-id date.u.heartbeat.session duct.u.heartbeat.session :: $(requests t.requests) :: == :: +on-gall-response: turns a gall response into an event :: ++ on-gall-response |= [channel-id=@t request-id=@ud =sign:agent:gall] ^- [(list move) server-state] :: ?- -.sign %poke-ack =/ =json =, enjs:format %- pairs :~ ['response' [%s 'poke']] ['id' (numb request-id)] ?~ p.sign ['ok' [%s 'ok']] ['err' (wall (render-tang-to-wall 100 u.p.sign))] == :: (emit-event channel-id [(en-json:html json)]~) :: %fact =/ =json =, enjs:format %- pairs :~ ['response' [%s 'diff']] ['id' (numb request-id)] :- 'json' ?> =(%json p.cage.sign) ;;(json q.q.cage.sign) == :: (emit-event channel-id [(en-json:html json)]~) :: %kick =/ =json =, enjs:format %- pairs :~ ['response' [%s 'quit']] ['id' (numb request-id)] == :: (emit-event channel-id [(en-json:html json)]~) :: %watch-ack =/ =json =, enjs:format %- pairs :~ ['response' [%s 'subscribe']] ['id' (numb request-id)] ?~ p.sign ['ok' [%s 'ok']] ['err' (wall (render-tang-to-wall 100 u.p.sign))] == :: (emit-event channel-id [(en-json:html json)]~) == :: +emit-event: records an event occurred, possibly sending to client :: :: When an event occurs, we need to record it, even if we immediately :: send it to a connected browser so in case of disconnection, we can :: resend it. :: :: This function is responsible for taking the raw json lines and :: converting them into a text/event-stream. The :event-stream-lines :: then may get sent, and are stored for later resending until :: acknowledged by the client. :: ++ emit-event |= [channel-id=@t json-text=wall] ^- [(list move) server-state] :: =/ channel=(unit channel) (~(get by session.channel-state.state) channel-id) ?~ channel :_ state :_ ~ [duct %pass /flog %d %flog %crud %eyre-no-channel >id=channel-id< ~] :: =/ event-id next-id.u.channel :: =/ event-stream-lines=wall %- weld :_ [""]~ :- (weld "id: " (format-ud-as-integer event-id)) %+ turn json-text |= =tape (weld "data: " tape) :: if a client is connected, send this event to them. :: =? moves ?=([%| *] state.u.channel) ^- (list move) :_ moves :+ p.state.u.channel %give ^- gift:able :* %response %continue :: ^= data :- ~ %- as-octs:mimes:html (crip (of-wall:format event-stream-lines)) :: complete=%.n == :: :- moves %_ state session.channel-state %+ ~(jab by session.channel-state.state) channel-id |= =^channel ^+ channel :: %_ channel next-id +(next-id.channel) events (~(put to events.channel) [event-id event-stream-lines]) == == :: ++ on-channel-heartbeat |= channel-id=@t ^- [(list move) server-state] :: ?~ connection-state=(~(get by connections.state) duct) [~ state] :: =/ res %- handle-response :* %continue data=(some (as-octs:mimes:html '\0a')) complete=%.n == =/ http-moves -.res =/ new-state +.res =/ heartbeat-time=@da (add now ~s20) :_ %_ new-state session.channel-state %+ ~(jab by session.channel-state.state) channel-id |= =channel channel(heartbeat (some [heartbeat-time duct])) == (snoc http-moves (set-heartbeat-move channel-id heartbeat-time)) :: +on-channel-timeout: we received a wake to clear an old session :: ++ on-channel-timeout |= channel-id=@t ^- [(list move) server-state] :: =/ usession=(unit channel) (~(get by session.channel-state.state) channel-id) ?~ usession [~ state] =/ session=channel u.usession :: :_ %_ state session.channel-state (~(del by session.channel-state.state) channel-id) == =/ heartbeat-cancel=(list move) ?~ heartbeat.session ~ :~ %^ cancel-heartbeat-move channel-id date.u.heartbeat.session duct.u.heartbeat.session == %+ weld heartbeat-cancel :: produce a list of moves which cancels every gall subscription :: %+ turn ~(tap by subscriptions.session) |= [channel-wire=wire ship=@p app=term =path duc=^duct] ^- move :: [duc %pass channel-wire [%g %deal [our ship] app %leave ~]] -- :: +handle-ford-response: translates a ford response for the outside world :: ++ handle-ford-response |= made-result=made-result:ford ^- [(list move) server-state] :: =+ connection=(~(got by connections.state) duct) :: ?: ?=(%incomplete -.made-result) %^ return-static-data-on-duct 500 'text/html' :: %- internal-server-error :* authenticated.inbound-request.connection url.request.inbound-request.connection tang.made-result == :: ?: ?=(%error -.build-result.made-result) %^ return-static-data-on-duct 500 'text/html' :: %- internal-server-error :* authenticated.inbound-request.connection url.request.inbound-request.connection message.build-result.made-result == :: =/ =cage (result-to-cage:ford build-result.made-result) :: =/ result=simple-payload:http ;;(simple-payload:http q.q.cage) :: ensure we have a valid content-length header :: :: We pass on the response and the headers the generator produces, but :: ensure that we have a single content-length header set correctly in :: the returned if this has a body, and has no content-length if there :: is no body returned to the client. :: =. headers.response-header.result ?~ data.result (delete-header:http 'content-length' headers.response-header.result) :: %^ set-header:http 'content-length' (crip (format-ud-as-integer p.u.data.result)) headers.response-header.result :: %- handle-response :: ^- http-event:http :* %start response-header.result data.result complete=%.y == :: +handle-gall-error: a call to +poke-http-response resulted in a %coup :: ++ handle-gall-error |= =tang ^- [(list move) server-state] :: =+ connection=(~(got by connections.state) duct) =/ moves-1=(list move) ?. ?=(%app -.action.connection) ~ :_ ~ :* duct %pass /watch-response/[eyre-id] %g %deal [our our] app.action.connection %leave ~ == :: =^ moves-2 state %^ return-static-data-on-duct 500 'text/html' :: %- internal-server-error :* authenticated.inbound-request.connection url.request.inbound-request.connection tang == [(weld moves-1 moves-2) state] :: +handle-response: check a response for correctness and send to earth :: :: All outbound responses including %http-server generated responses need to go :: through this interface because we want to have one centralized place :: where we perform logging and state cleanup for connections that we're :: done with. :: ++ handle-response |= =http-event:http ^- [(list move) server-state] :: verify that this is a valid response on the duct :: ?~ connection-state=(~(get by connections.state) duct) ~& [%invalid-outstanding-connection duct] [~ state] :: |^ ^- [(list move) server-state] :: ?- -.http-event :: %start ?^ response-header.u.connection-state ~& [%http-multiple-start duct] error-connection :: =. connections.state %+ ~(jab by connections.state) duct |= connection=outstanding-connection %_ connection response-header `response-header.http-event bytes-sent ?~(data.http-event 0 p.u.data.http-event) == :: =? state complete.http-event log-complete-request :: pass-response :: %continue ?~ response-header.u.connection-state ~& [%http-continue-without-start duct] error-connection :: =. connections.state %+ ~(jab by connections.state) duct |= connection=outstanding-connection =+ size=?~(data.http-event 0 p.u.data.http-event) connection(bytes-sent (add bytes-sent.connection size)) :: =? state complete.http-event log-complete-request :: pass-response :: %cancel :: todo: log this differently from an ise. :: error-connection == :: ++ pass-response ^- [(list move) server-state] [[duct %give %response http-event]~ state] :: ++ log-complete-request :: todo: log the complete request :: :: remove all outstanding state for this connection :: =. connections.state (~(del by connections.state) duct) state :: ++ error-connection :: todo: log application error :: :: remove all outstanding state for this connection :: =. connections.state (~(del by connections.state) duct) :: respond to outside with %error :: ^- [(list move) server-state] :_ state :- [duct %give %response %cancel ~] ?. ?=(%app -.action.u.connection-state) ~ :_ ~ :* duct %pass /watch-response/[eyre-id] %g %deal [our our] app.action.u.connection-state %leave ~ == -- :: +add-binding: conditionally add a pairing between binding and action :: :: Adds =binding =action if there is no conflicting bindings. :: ++ add-binding |= [=binding =action] :: =/ to-search bindings.state |- ^- [(list move) server-state] ?~ to-search :- [duct %give %bound %.y binding]~ =. bindings.state :: store in reverse alphabetical order so that longer paths are first :: %- flop %+ sort [[binding duct action] bindings.state] |= [[a=^binding *] [b=^binding *]] :: ?: =(site.a site.b) (aor path.a path.b) :: alphabetize based on site :: (aor ?~(site.a '' u.site.a) ?~(site.b '' u.site.b)) state :: ?: =(binding binding.i.to-search) :- [duct %give %bound %.n binding]~ state :: $(to-search t.to-search) :: +remove-binding: removes a binding if it exists and is owned by this duct :: ++ remove-binding |= =binding :: ^- server-state %_ state bindings %+ skip bindings.state |= [item-binding=^binding item-duct=^duct =action] ^- ? &(=(item-binding binding) =(item-duct duct)) == :: +get-action-for-binding: finds an action for an incoming web request :: ++ get-action-for-binding |= [raw-host=(unit @t) url=@t] ^- action :: process :raw-host :: :: If we are missing a 'Host:' header, if that header is a raw IP :: address, or if the 'Host:' header refers to [our].urbit.org, we want :: to return ~ which means we're unidentified and will match against any :: wildcard matching. :: :: Otherwise, return the site given. :: =/ host=(unit @t) ?~ raw-host ~ :: Parse the raw-host so that we can ignore ports, usernames, etc. :: =+ parsed=(rush u.raw-host simplified-url-parser) ?~ parsed ~ :: if the url is a raw IP, assume default site. :: ?: ?=([%ip *] -.u.parsed) ~ :: if the url is "localhost", assume default site. :: ?: =([%site 'localhost'] -.u.parsed) ~ :: render our as a tape, and cut off the sig in front. :: =/ with-sig=tape (scow %p our) ?> ?=(^ with-sig) ?: =(u.raw-host (crip t.with-sig)) :: [our].urbit.org is the default site :: ~ :: raw-host :: url is the raw thing passed over the 'Request-Line'. :: :: todo: this is really input validation, and we should return a 500 to :: the client. :: =/ request-line (parse-request-line url) =/ parsed-url=(list @t) site.request-line :: =/ bindings bindings.state |- :: ?~ bindings [%four-oh-four ~] :: ?: ?& (host-matches site.binding.i.bindings raw-host) (path-matches path.binding.i.bindings parsed-url) == action.i.bindings :: $(bindings t.bindings) -- :: :: ++ parse-request-line |= url=@t ^- [[ext=(unit @ta) site=(list @t)] args=(list [key=@t value=@t])] (fall (rush url ;~(plug apat:de-purl:html yque:de-purl:html)) [[~ ~] ~]) -- :: end the =~ :: . == :: begin with a default +axle as a blank slate :: =| ax=axle :: a vane is activated with current date, entropy, and a namespace function :: |= [our=ship now=@da eny=@uvJ scry-gate=sley] :: allow jets to be registered within this core :: ~% %http-server ..is ~ |% ++ call |= [=duct dud=(unit goof) type=* wrapped-task=(hobo task:able)] ^- [(list move) _http-server-gate] :: =/ task=task:able ((harden task:able) wrapped-task) :: :: error notifications "downcast" to %crud :: =? task ?=(^ dud) ~| %crud-in-crud ?< ?=(%crud -.task) [%crud -.task tang.u.dud] :: :: %crud: notifies us of an event failure :: ?: ?=(%crud -.task) =/ moves=(list move) [[duct %slip %d %flog task] ~] [moves http-server-gate] :: %init: tells us what our ship name is :: ?: ?=(%init -.task) :: initial value for the login handler :: =. bindings.server-state.ax :~ [[~ /~/login] duct [%authentication ~]] [[~ /~/channel] duct [%channel ~]] == [~ http-server-gate] :: %trim: in response to memory pressure :: :: Cancel all inactive channels :: XX cancel active too if =(0 trim-priority) ? :: ?: ?=(%trim -.task) =/ event-args [[our eny duct now scry-gate] server-state.ax] =* by-channel by-channel:(per-server-event event-args) =* channel-state channel-state.server-state.ax :: =/ inactive=(list @t) =/ full=(set @t) ~(key by session.channel-state) =/ live=(set @t) (~(gas in *(set @t)) ~(val by duct-to-key.channel-state)) ~(tap in (~(dif in full) live)) :: ?: =(~ inactive) [~ http-server-gate] :: =/ len=tape (scow %ud (lent inactive)) ~> %slog.[0 leaf+"eyre: trim: closing {len} inactive channels"] :: =| moves=(list (list move)) |- ^- [(list move) _http-server-gate] =* channel-id i.inactive ?~ inactive [(zing (flop moves)) http-server-gate] :: discard channel state, and cancel any active gall subscriptions :: =^ mov server-state.ax (on-channel-timeout:by-channel channel-id) :: cancel channel timer :: =/ channel (~(got by session.channel-state) channel-id) =? mov ?=([%& *] state.channel) :_ mov (cancel-timeout-move:by-channel channel-id p.state.channel) $(moves [mov moves], inactive t.inactive) :: :: %vega: notifies us of a completed kernel upgrade :: ?: ?=(%vega -.task) [~ http-server-gate] :: %born: new unix process :: ?: ?=(%born -.task) :: close previously open connections :: :: When we have a new unix process, every outstanding open connection is :: dead. For every duct, send an implicit close connection. :: =^ closed-connections=(list move) server-state.ax =/ connections=(list [=^duct *]) ~(tap by connections.server-state.ax) :: =| closed-connections=(list move) |- ?~ connections [closed-connections server-state.ax] :: =/ event-args [[our eny duct.i.connections now scry-gate] server-state.ax] =/ cancel-request cancel-request:(per-server-event event-args) =^ moves server-state.ax cancel-request :: $(closed-connections (weld moves closed-connections), connections t.connections) :: save duct for future %give to unix :: =. outgoing-duct.server-state.ax duct :: :_ http-server-gate ;: weld :: hand back default configuration for now :: [duct %give %set-config http-config.server-state.ax]~ :: closed-connections == :: all other commands operate on a per-server-event :: =/ event-args [[our eny duct now scry-gate] server-state.ax] =/ server (per-server-event event-args) :: ?- -.task :: %live: notifies us of the ports of our live http servers :: %live =. ports.server-state.ax +.task [~ http-server-gate] :: %rule: updates our http configuration :: %rule ?- -.http-rule.task :: %cert: install tls certificate :: %cert =* config http-config.server-state.ax ?: =(secure.config cert.http-rule.task) [~ http-server-gate] =. secure.config cert.http-rule.task :_ http-server-gate =* out-duct outgoing-duct.server-state.ax ?~ out-duct ~ [out-duct %give %set-config config]~ :: %turf: add or remove domain name :: %turf =* domains domains.server-state.ax =/ mod/(set turf) ?: ?=(%put action.http-rule.task) (~(put in domains) turf.http-rule.task) (~(del in domains) turf.http-rule.task) ?: =(domains mod) [~ http-server-gate] =. domains mod :_ http-server-gate =/ cmd [%acme %poke `cage`[%acme-order !>(mod)]] [duct %pass /acme/order %g %deal [our our] cmd]~ == :: %request =^ moves server-state.ax (request:server +.task) [moves http-server-gate] :: %request-local =^ moves server-state.ax (request-local:server +.task) [moves http-server-gate] :: %cancel-request =^ moves server-state.ax cancel-request:server [moves http-server-gate] :: %connect =^ moves server-state.ax %+ add-binding:server binding.task [%app app.task] [moves http-server-gate] :: %serve =^ moves server-state.ax %+ add-binding:server binding.task [%gen generator.task] [moves http-server-gate] :: %disconnect =. server-state.ax (remove-binding:server binding.task) [~ http-server-gate] :: %wegh :_ http-server-gate :~ :* duct %give %mass ^- mass :+ %eyre %| :~ bindings+&+bindings.server-state.ax auth+&+authentication-state.server-state.ax connections+&+connections.server-state.ax channels+&+channel-state.server-state.ax axle+&+ax == == == == :: ++ take |= [=wire =duct dud=(unit goof) wrapped-sign=(hypo sign)] ^- [(list move) _http-server-gate] ?^ dud ~|(%eyre-take-dud (mean tang.u.dud)) :: unwrap :sign, ignoring unneeded +type in :p.wrapped-sign :: =/ =sign q.wrapped-sign => %= . sign ?: ?=(%g -.sign) ?> ?=(%unto +<.sign) sign sign == :: :wire must at least contain two parts, the type and the build :: ?> ?=([@ *] wire) :: |^ ^- [(list move) _http-server-gate] :: ?+ i.wire ~|([%bad-take-wire wire] !!) :: %run-app-request run-app-request %watch-response watch-response %run-build run-build %channel channel %acme acme-ack == :: ++ run-app-request :: ?> ?=([%g %unto *] sign) :: :: ?> ?=([%poke-ack *] p.sign) ?> ?=([@ *] t.wire) ?~ p.p.sign :: received a positive acknowledgment: take no action :: [~ http-server-gate] :: we have an error; propagate it to the client :: =/ event-args [[our eny duct now scry-gate] server-state.ax] =/ handle-gall-error handle-gall-error:(per-server-event event-args) =^ moves server-state.ax (handle-gall-error u.p.p.sign) [moves http-server-gate] :: ++ watch-response :: =/ event-args [[our eny duct now scry-gate] server-state.ax] :: ?> ?=([@ *] t.wire) ?: ?=([%g %unto %watch-ack *] sign) ?~ p.p.sign :: received a positive acknowledgment: take no action :: [~ http-server-gate] :: we have an error; propagate it to the client :: =/ handle-gall-error handle-gall-error:(per-server-event event-args) =^ moves server-state.ax (handle-gall-error u.p.p.sign) [moves http-server-gate] :: ?: ?=([%g %unto %kick ~] sign) =/ handle-response handle-response:(per-server-event event-args) =^ moves server-state.ax (handle-response %continue ~ &) [moves http-server-gate] :: ?> ?=([%g %unto %fact *] sign) =/ =mark p.cage.p.sign =/ =vase q.cage.p.sign ?. ?= ?(%http-response-header %http-response-data %http-response-cancel) mark =/ handle-gall-error handle-gall-error:(per-server-event event-args) =^ moves server-state.ax (handle-gall-error leaf+"eyre bad mark {}" ~) [moves http-server-gate] :: =/ =http-event:http ?- mark %http-response-header [%start !<(response-header:http vase) ~ |] %http-response-data [%continue !<((unit octs) vase) |] %http-response-cancel [%cancel ~] == =/ handle-response handle-response:(per-server-event event-args) =^ moves server-state.ax (handle-response http-event) [moves http-server-gate] :: ++ run-build :: ?> ?=([%f %made *] sign) :: =/ event-args [[our eny duct now scry-gate] server-state.ax] =/ handle-ford-response handle-ford-response:(per-server-event event-args) =^ moves server-state.ax (handle-ford-response result.sign) [moves http-server-gate] :: ++ channel :: =/ event-args [[our eny duct now scry-gate] server-state.ax] :: channel callback wires are triples. :: ?> ?=([@ @ @t *] wire) :: ?+ i.t.wire ~|([%bad-channel-wire wire] !!) :: %timeout ?> ?=([%b %wake *] sign) ?^ error.sign [[duct %slip %d %flog %crud %wake u.error.sign]~ http-server-gate] =/ on-channel-timeout on-channel-timeout:by-channel:(per-server-event event-args) =^ moves server-state.ax (on-channel-timeout i.t.t.wire) [moves http-server-gate] :: %heartbeat =/ on-channel-heartbeat on-channel-heartbeat:by-channel:(per-server-event event-args) =^ moves server-state.ax (on-channel-heartbeat i.t.t.wire) [moves http-server-gate] :: ?(%poke %subscription) ?> ?=([%g %unto *] sign) ?> ?=([@ @ @t @ *] wire) =/ on-gall-response on-gall-response:by-channel:(per-server-event event-args) :: ~& [%gall-response sign] =^ moves server-state.ax (on-gall-response i.t.t.wire `@ud`(slav %ud i.t.t.t.wire) p.sign) [moves http-server-gate] == :: ++ acme-ack ?> ?=([%g %unto *] sign) :: ?> ?=([%poke-ack *] p.sign) ?~ p.p.sign :: received a positive acknowledgment: take no action :: [~ http-server-gate] :: received a negative acknowledgment: XX do something :: [((slog u.p.p.sign) ~) http-server-gate] -- :: ++ http-server-gate ..$ :: +load: migrate old state to new state (called on vane reload) :: ++ load => |% +$ channel-old $: state=(each timer duct) next-id=@ud events=(qeu [id=@ud lines=wall]) subscriptions=(map wire [ship=@p app=term =path duc=duct]) == +$ channel-state-old $: session=(map @t channel-old) duct-to-key=(map duct @t) == ++ axle-old %+ cork axle |= =axle axle(date %~2019.1.7, channel-state.server-state (channel-state-old)) -- |= old=$%(axle axle-old) ^+ ..^$ :: ~! %loading ?- -.old %~2019.1.7 =/ add-heartbeat %- ~(run by session.channel-state.server-state.old) |= [c=channel-old] ^- channel [state.c next-id.c events.c subscriptions.c ~] :: =/ new %= old date %~2019.10.6 session.channel-state.server-state add-heartbeat == $(old new) :: %~2019.10.6 ..^$(ax old) == :: +stay: produce current state :: ++ stay `axle`ax :: +scry: request a path in the urbit namespace :: ++ scry |= [fur=(unit (set monk)) ren=@tas why=shop syd=desk lot=coin tyl=path] ^- (unit (unit cage)) ?. ?=(%& -.why) ~ =* who p.why ?. ?=(%$ ren) [~ ~] ?. ?=(%$ -.lot) [~ ~] ?. ?=(%host syd) [~ ~] %- (lift (lift |=(a=hart:eyre [%hart !>(a)]))) ^- (unit (unit hart:eyre)) ?. =(our who) ?. =([%da now] p.lot) [~ ~] ~& [%r %scry-foreign-host who] ~ =. p.lot ?.(=([%da now] p.lot) p.lot [%tas %real]) ?+ p.lot [~ ~] :: [%tas %fake] ``[& [~ 8.443] %& /localhost] :: [%tas %real] =* domains domains.server-state.ax =* ports ports.server-state.ax =/ =host:eyre [%& ?^(domains n.domains /localhost)] =/ secure=? &(?=(^ secure.ports) !?=(hoke:eyre host)) =/ port=(unit @ud) ?. secure ?:(=(80 insecure.ports) ~ `insecure.ports) ?> ?=(^ secure.ports) ?:(=(443 u.secure.ports) ~ secure.ports) ``[secure port host] == --