434 lines
14 KiB
Rust
434 lines
14 KiB
Rust
//! Host page routes with a software authenticator and the page's WebCrypto implementation.
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use anyhow::Result;
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use bytes::Bytes;
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use sausage::{
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api::{Api, handle},
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cred::{
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self, Caller, Cred,
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entry::{EntryKey, Envelope},
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webauthn::{Challenge, Passkeys},
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},
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};
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use serde_json::{Value, json};
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use webauthn_authenticator_rs::{WebauthnAuthenticator, softpasskey::SoftPasskey};
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use webauthn_rs::prelude::{CreationChallengeResponse, RequestChallengeResponse, Url};
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const ORIGIN: &str = "http://localhost:8081";
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const SECRET: &str = "browser-only-value";
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fn caller() -> Caller {
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Caller {
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pid: 17,
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program: "/bin/agent".into(),
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conversations: vec!["conversation".into()],
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}
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}
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async fn send(api: &Api<'_>, method: &str, path: &str, body: Value) -> Result<(u16, Value)> {
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let response = handle(
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api,
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caller(),
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http::Request::builder()
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.method(method)
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.uri(path)
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.body(Bytes::from(serde_json::to_vec(&body)?))?,
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)
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.await;
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assert!(!std::str::from_utf8(response.body())?.contains(SECRET));
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Ok((
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response.status().as_u16(),
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serde_json::from_slice(response.body())?,
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))
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}
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async fn ok(api: &Api<'_>, method: &str, path: &str, body: Value) -> Result<Value> {
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let (status, value) = send(api, method, path, body).await?;
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assert_eq!(status, 200, "unexpected API status");
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Ok(value)
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}
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async fn page(api: &Api<'_>, path: &str) -> Result<String> {
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let response = handle(
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api,
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caller(),
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http::Request::builder().uri(path).body(Bytes::new())?,
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)
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.await;
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assert_eq!(response.status(), 200);
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assert_eq!(
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response.headers()["content-type"],
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"text/html; charset=utf-8"
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);
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let text = std::str::from_utf8(response.body())?;
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assert!(!text.contains(SECRET));
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assert!(text.contains("/app.js"));
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Ok(text.into())
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}
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fn item(cred: &Cred, name: &str) -> Result<cred::items::Item> {
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Ok(cred.create_item(serde_json::from_value(json!({"name":name,"rules":[],"transform_js":"","fields":[{"name":"first","field_type":"text"},{"name":"second","field_type":"text"}]}))?,&caller(),cred.unlocked()?)?)
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}
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async fn file(api: &Api<'_>, item: &str, key: &str) -> Result<String> {
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let result = ok(
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api,
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"POST",
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"/cred/requests",
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json!({"kind":"grant","key":key,"request":{"items":[item],"duration_secs":300}}),
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)
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.await?;
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Ok(result["request"].as_str().unwrap().into())
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}
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async fn register(api: &Api<'_>) -> Result<WebauthnAuthenticator<SoftPasskey>> {
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let start: Challenge<CreationChallengeResponse> = serde_json::from_value(
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ok(
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api,
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"POST",
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"/cred/passkeys/register/start",
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json!({"label":"browser"}),
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)
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.await?,
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)?;
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let mut auth = WebauthnAuthenticator::new(SoftPasskey::new(true));
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let response = auth.do_registration(Url::parse(ORIGIN)?, start.options)?;
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ok(
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api,
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"POST",
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"/cred/passkeys/register/finish",
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json!({"challenge_id":start.id,"response":response}),
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)
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.await?;
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Ok(auth)
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}
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async fn assertion(
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api: &Api<'_>,
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auth: &mut WebauthnAuthenticator<SoftPasskey>,
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path: &str,
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body: Value,
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) -> Result<Value> {
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let start: Challenge<RequestChallengeResponse> =
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serde_json::from_value(ok(api, "POST", path, body).await?)?;
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let assertion = auth.do_authentication(Url::parse(ORIGIN)?, start.options)?;
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Ok(json!({"challenge_id":start.id,"assertion":assertion}))
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}
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#[tokio::test(flavor = "current_thread")]
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async fn approvals_registration_and_revocation() -> Result<()> {
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let dir = tempfile::tempdir()?;
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let db = rusqlite::Connection::open(dir.path().join("cred.sqlite"))?;
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let cred = Cred::open(dir.path())?;
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let first = item(&cred, "bootstrap")?;
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let second = item(&cred, "review <script>not markup</script>")?;
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let api = Api::new(
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cred,
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Passkeys::new(&db, "localhost", ORIGIN)?,
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EntryKey::open(&dir.path().join("entry.key"))?,
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);
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page(&api, "/register").await?;
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let bootstrap = file(&api, &first.id, "bootstrap").await?;
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let bootstrap_path = format!("/cred/requests/{bootstrap}");
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assert_eq!(
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ok(
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&api,
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"POST",
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&format!("{bootstrap_path}/challenge"),
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json!({"decision":"approve"})
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)
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.await?["unlocked"],
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true
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);
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ok(
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&api,
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"POST",
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&format!("{bootstrap_path}/decide"),
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json!({"decision":"approve"}),
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)
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.await?;
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assert!(
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api.cred
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.grant_list()?
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.iter()
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.any(|g| g.items.contains(&first.id))
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);
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let mut auth = register(&api).await?;
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let list = ok(&api, "GET", "/cred/passkeys", json!({})).await?;
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assert_eq!(list[0]["label"], "browser");
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assert!(!list[0]["id"].as_str().unwrap().contains('"'));
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assert_eq!(
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send(
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&api,
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"POST",
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"/cred/passkeys/register/start",
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json!({"label":"ungated"})
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)
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.await?
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.0,
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403
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);
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let id = file(&api, &second.id, "approval").await?;
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let other = file(&api, &second.id, "other").await?;
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let path = format!("/cred/requests/{id}");
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let review = page(&api, &format!("/approve/{id}")).await?;
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assert!(review.contains("data-grant=\"true\""));
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assert!(review.contains("value=\"300\""));
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assert!(review.contains("<script>not markup</script>"));
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assert!(!review.contains("<script>not markup</script>"));
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assert_ne!(
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send(
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&api,
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"POST",
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&format!("{path}/decide"),
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json!({"decision":"approve"})
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)
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.await?
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.0,
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200
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);
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assert_eq!(
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send(
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&api,
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"POST",
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&format!("{path}/challenge"),
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json!({"decision":"approve","overrides":{"max_use":1}})
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)
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.await?
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.0,
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400
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);
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let gate = assertion(
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&api,
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&mut auth,
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&format!("{path}/challenge"),
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json!({"decision":"approve"}),
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)
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.await?;
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assert_eq!(
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send(
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&api,
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"POST",
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&format!("/cred/requests/{other}/decide"),
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gate.clone()
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)
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.await?
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.0,
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403
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);
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assert_eq!(
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send(&api, "POST", &format!("{path}/decide"), gate).await?.0,
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403
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);
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let mut gate = assertion(
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&api,
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&mut auth,
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&format!("{path}/challenge"),
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json!({"decision":"deny"}),
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)
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.await?;
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gate["decision"] = json!("approve");
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assert_eq!(
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send(&api, "POST", &format!("{path}/decide"), gate).await?.0,
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403
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);
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let gate = assertion(
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&api,
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&mut auth,
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&format!("{path}/challenge"),
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json!({"decision":"approve","overrides":{"max_uses":2}}),
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)
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.await?;
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ok(&api, "POST", &format!("{path}/decide"), gate.clone()).await?;
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assert_eq!(
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send(&api, "POST", &format!("{path}/decide"), gate).await?.0,
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403
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);
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let grant = api
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.cred
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.grant_list()?
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.into_iter()
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.find(|g| g.items.contains(&second.id))
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.unwrap();
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assert!(grant.subject.covers(&caller()));
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assert_eq!(grant.max_uses, Some(2));
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let revoke = ok(
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&api,
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"POST",
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&format!("/cred/grants/{}/revoke", grant.id),
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json!({"key":"revoke"}),
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)
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.await?;
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assert!(!api.cred.grant_status(&grant.id)?.revoked);
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let revoke = revoke["request"].as_str().unwrap();
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let gate = assertion(
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&api,
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&mut auth,
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&format!("/cred/requests/{revoke}/challenge"),
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json!({"decision":"approve"}),
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)
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.await?;
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ok(
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&api,
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"POST",
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&format!("/cred/requests/{revoke}/decide"),
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gate,
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)
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.await?;
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assert!(api.cred.grant_status(&grant.id)?.revoked);
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let edit = ok(&api,"POST","/cred/requests",json!({"kind":"edit","key":"rename","request":{"item":second.id,"base_version":api.cred.item_get(&second.id)?.version,"change":[{"op":"set_name","name":"renamed"}]}})).await?;
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let edit = edit["request"].as_str().unwrap();
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let edit_page = page(&api, &format!("/approve/{edit}")).await?;
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assert!(edit_page.contains("data-grant=\"false\""));
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assert!(edit_page.contains("<fieldset hidden disabled>"));
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let edit_gate = assertion(
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&api,
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&mut auth,
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&format!("/cred/requests/{edit}/challenge"),
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json!({"decision":"approve"}),
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)
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.await?;
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ok(
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&api,
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"POST",
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&format!("/cred/requests/{edit}/decide"),
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edit_gate,
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)
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.await?;
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assert_eq!(api.cred.item_get(&second.id)?.name, "renamed");
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let gate = assertion(
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&api,
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&mut auth,
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"/cred/passkeys/register/challenge",
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json!({"label":"second"}),
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)
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.await?;
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let start: Challenge<CreationChallengeResponse> = serde_json::from_value(ok(&api,"POST","/cred/passkeys/register/start",json!({"label":"second","gate":{"id":gate["challenge_id"],"response":gate["assertion"]}})).await?)?;
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let mut another = WebauthnAuthenticator::new(SoftPasskey::new(true));
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let response = another.do_registration(Url::parse(ORIGIN)?, start.options)?;
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ok(
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&api,
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"POST",
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"/cred/passkeys/register/finish",
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json!({"challenge_id":start.id,"response":response}),
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)
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.await?;
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assert_eq!(
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ok(&api, "GET", "/cred/passkeys", json!({}))
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.await?
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.as_array()
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.unwrap()
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.len(),
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2
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);
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Ok(())
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}
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async fn encrypt(api: &Api<'_>, public_key: Value) -> Result<Envelope> {
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use deno_core::{JsRuntime, RuntimeOptions};
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let script = handle(
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api,
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caller(),
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http::Request::builder().uri("/app.js").body(Bytes::new())?,
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)
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.await;
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assert_eq!(script.status(), 200);
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assert!(!std::str::from_utf8(script.body())?.contains(SECRET));
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let mut runtime = JsRuntime::new(RuntimeOptions {
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extensions: vec![
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deno_webidl::deno_webidl::init(),
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deno_web::deno_web::init(
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std::sync::Arc::new(deno_web::BlobStore::default()),
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None,
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false,
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Default::default(),
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),
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deno_crypto::deno_crypto::init(None),
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],
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..Default::default()
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});
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runtime.execute_script("browser.js","globalThis.crypto = Deno.core.loadExtScript('ext:deno_crypto/00_crypto.js').crypto; globalThis.TextEncoder = Deno.core.loadExtScript('ext:deno_web/08_text_encoding.js').TextEncoder; globalThis.document = {querySelector: () => ({addEventListener() {}})};")?;
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runtime.execute_script("app.js", std::str::from_utf8(script.body())?.to_string())?;
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runtime.execute_script("encrypt.js",format!("globalThis.done = encrypt({public_key},'{SECRET}').then(result => globalThis.envelope = JSON.stringify(result.envelope));"))?;
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runtime.run_event_loop(Default::default()).await?;
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let value = runtime.execute_script("result.js", "envelope")?;
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let text = {
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deno_core::scope!(scope, &mut runtime);
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let value = deno_core::v8::Local::new(scope, value);
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value.to_rust_string_lossy(scope)
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};
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Ok(serde_json::from_str(&text)?)
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}
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#[tokio::test(flavor = "current_thread")]
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async fn encrypted_entry_uses_the_host_page_code() -> Result<()> {
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let dir = tempfile::tempdir()?;
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let db = rusqlite::Connection::open(dir.path().join("cred.sqlite"))?;
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let cred = Cred::open(dir.path())?;
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let item = item(&cred, "secret")?;
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let api = Api::new(
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cred,
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Passkeys::new(&db, "localhost", ORIGIN)?,
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EntryKey::open(&dir.path().join("entry.key"))?,
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);
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let mut auth = register(&api).await?;
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let public = ok(&api, "GET", "/cred/entry/key", json!({})).await?;
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let entry_page = page(
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&api,
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&format!("/entry/{}/{}", item.id, item.fields[0].field_id),
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)
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.await?;
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assert!(entry_page.contains(&public["public_key"].to_string()));
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let envelope = encrypt(&api, public["public_key"].clone()).await?;
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let path = format!("/cred/items/{}/fields/{}", item.id, item.fields[0].field_id);
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for target in [
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format!("/cred/items/{}/fields/{}", item.id, item.fields[1].field_id),
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format!("/cred/items/other/fields/{}", item.fields[0].field_id),
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] {
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let mut gate = assertion(
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&api,
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&mut auth,
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&format!("{path}/challenge"),
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json!({"ciphertext_sha256":envelope.sha256()}),
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)
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.await?;
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gate["envelope"] = serde_json::to_value(&envelope)?;
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assert_eq!(send(&api, "POST", &target, gate).await?.0, 403);
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}
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let mut gate = assertion(
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&api,
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&mut auth,
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&format!("{path}/challenge"),
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json!({"ciphertext_sha256":"0".repeat(64)}),
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)
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.await?;
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gate["envelope"] = serde_json::to_value(&envelope)?;
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assert_eq!(send(&api, "POST", &path, gate).await?.0, 403);
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assert!(api.cred.item_get(&item.id)?.fields[0].needs_value);
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let mut gate = assertion(
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&api,
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&mut auth,
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&format!("{path}/challenge"),
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json!({"ciphertext_sha256":envelope.sha256()}),
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)
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.await?;
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gate["envelope"] = serde_json::to_value(&envelope)?;
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ok(&api, "POST", &path, gate.clone()).await?;
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assert_eq!(send(&api, "POST", &path, gate).await?.0, 403);
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assert!(!api.cred.item_get(&item.id)?.fields[0].needs_value);
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ok(&api, "GET", &format!("/cred/items/{}", item.id), json!({})).await?;
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let master = std::fs::read(dir.path().join("cred.key"))?;
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let cipher: Vec<u8> = db.query_row(
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"SELECT ciphertext FROM fields WHERE item=?",
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[&item.id],
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|r| r.get(0),
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)?;
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use chacha20poly1305::{
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XChaCha20Poly1305, XNonce,
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aead::{Aead, KeyInit, Payload},
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};
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let aad = format!("{}|{}", item.id, item.fields[0].field_id);
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let plaintext = XChaCha20Poly1305::new_from_slice(&master)
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.unwrap()
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.decrypt(
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XNonce::from_slice(&cipher[..24]),
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Payload {
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msg: &cipher[24..],
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aad: aad.as_bytes(),
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},
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)
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.map_err(|_| anyhow::anyhow!("fixture decrypt failed"))?;
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assert!(plaintext == SECRET.as_bytes());
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Ok(())
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|
}
|