867 lines
35 KiB
Rust
867 lines
35 KiB
Rust
//! Optional matrix-tuwunel wiring: shared registration token (host) +
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//! per-agent UIAA registration → `<agent-state>/matrix-token`. No-op
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//! when the `hive-matrix` container isn't running, so operators who
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//! haven't flipped `hyperhive.matrix.enable = true` pay nothing.
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//!
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//! See `docs/matrix.md::Provisioning flow (registration token)` for
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//! the full UIAA round-trip, token-file shape, and host/container
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//! bind-mount layout.
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use std::path::{Path, PathBuf};
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use anyhow::{Context, Result};
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use reqwest::StatusCode;
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use crate::coordinator::Coordinator;
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/// nspawn container name for the matrix homeserver — mirrors
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/// `hive-forge` and matches the bare-name allow-list the lifecycle
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/// scanner skips over.
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const MATRIX_CONTAINER: &str = "hive-matrix";
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/// Local-host URL of the tuwunel client-server API. Shares the host
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/// netns so `localhost:<port>` resolves both from the daemon and from
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/// inside any sub-agent container.
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const MATRIX_HTTP: &str = "http://localhost:8008";
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/// Host path of the matrix registration token. Must match
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/// `hyperhive.matrix.registrationTokenFile` in `nix/modules/hive-matrix.nix`
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/// (same path is bind-mounted read-only into the tuwunel container so
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/// the homeserver can read it via `registration_token_file`).
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const REGISTER_TOKEN_PATH: &str = "/var/lib/hyperhive/matrix-register-token";
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/// Length (bytes) of the random registration token. 32 raw bytes ⇒
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/// 64-char hex string; comfortable for a long-lived shared secret.
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const REGISTER_TOKEN_BYTES: usize = 32;
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/// HTTP timeout for registration round-trips. UIAA is two POSTs; even
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/// the slow path should finish well inside this budget.
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const HTTP_TIMEOUT_SECS: u64 = 10;
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/// Length (bytes) of the throwaway per-agent matrix password. Random
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/// 32-byte hex — agents never log in with the password (they
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/// authenticate by `access_token`), so it's protocol overhead. We
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/// store it nowhere.
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const PASSWORD_BYTES: usize = 32;
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/// Matrix localpart for the hive system admin account. Registered
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/// before any agent account in [`ensure_all`] so it becomes the first
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/// user on the homeserver — Conduit/tuwunel grants admin rights to the
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/// first registered user automatically. Not an agent; has no state dir.
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pub const HIVE_ADMIN_LOCALPART: &str = "hive";
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/// Host path for the hive admin matrix access token. Outside every
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/// purgeable path — not deleted by `destroy --purge` on any agent.
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#[must_use]
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pub fn admin_token_path() -> PathBuf {
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PathBuf::from("/var/lib/hyperhive/matrix-admin-token")
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}
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/// Token file inside the agent's bind-mounted state dir (visible as
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/// `/state/matrix-token` from inside the container).
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fn token_path(name: &str) -> PathBuf {
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Coordinator::agent_notes_dir(name).join("matrix-token")
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}
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/// Password file for the agent's matrix account. Stored OUTSIDE the
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/// purgeable `agent_state_root` tree so it survives `destroy --purge`
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/// and allows re-login recovery when the same agent name is re-spawned.
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///
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/// Path: `/var/lib/hyperhive/matrix-creds/<name>-password`
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///
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/// The token file lives inside the agent's bind-mounted state dir (under
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/// `agent_notes_dir`) so the agent container can read it; the password
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/// file is host-side only (agents never log in by password — they use
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/// the access token exclusively) and belongs with other hive-c0re
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/// credential state, not inside the purgeable per-agent tree.
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fn password_path(name: &str) -> PathBuf {
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PathBuf::from("/var/lib/hyperhive/matrix-creds").join(format!("{name}-password"))
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}
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/// Legacy password path (inside the old purgeable `agent_notes_dir`).
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/// Used only during the one-time migration in [`ensure_user_for`] to
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/// move credentials from old deployments to the new location. Safe to
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/// call after `destroy --purge` — the path will simply not exist and
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/// the migration is a no-op.
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fn legacy_password_path(name: &str) -> PathBuf {
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Coordinator::agent_notes_dir(name).join("matrix-password")
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}
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/// Host path where the hive Matrix Space room ID is persisted.
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/// Outside every purgeable path — not deleted by `destroy --purge`.
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#[must_use]
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pub fn hive_space_room_id_path() -> PathBuf {
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PathBuf::from("/var/lib/hyperhive/matrix-space-room-id")
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}
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/// Probe whether `hive-matrix` exists as a nixos-container. Cheap —
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/// `nixos-container list` is just a directory scan in /etc. Same shape
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/// as `forge::is_present` — routed through hive-priv since
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/// `nixos-container` needs root and hive-c0re runs unprivileged.
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pub async fn is_present() -> bool {
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let Ok(stdout) = crate::priv_client::list_containers().await else {
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return false;
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};
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stdout.lines().any(|l| l.trim() == MATRIX_CONTAINER)
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}
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/// Read `n` cryptographic-quality bytes from `/dev/urandom` and return
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/// them hex-encoded. Avoids pulling a workspace `rand` dep just for
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/// 32 bytes of randomness; the kernel's CSPRNG is more than enough for
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/// a long-lived shared secret on the same host.
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fn random_hex(n: usize) -> Result<String> {
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use std::io::Read;
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let mut buf = vec![0_u8; n];
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let mut f = std::fs::File::open("/dev/urandom").context("open /dev/urandom")?;
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f.read_exact(&mut buf).context("read /dev/urandom")?;
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let mut hex = String::with_capacity(n * 2);
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for b in &buf {
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use std::fmt::Write as _;
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write!(hex, "{b:02x}").ok();
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}
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Ok(hex)
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}
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/// Ensure the registration token file exists; returns its contents.
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/// Generates a fresh 32-byte hex token on first call (mode 0600,
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/// root-only), then re-reads on subsequent calls. The hive-matrix
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/// nixos module bind-mounts this file read-only into the tuwunel
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/// container so the homeserver can authenticate registration requests
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/// against the same secret hive-c0re holds.
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pub fn ensure_register_token() -> Result<String> {
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use std::os::unix::fs::PermissionsExt;
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let path = Path::new(REGISTER_TOKEN_PATH);
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if let Ok(existing) = std::fs::read_to_string(path) {
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let trimmed = existing.trim().to_owned();
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if !trimmed.is_empty() {
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return Ok(trimmed);
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}
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}
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let token = random_hex(REGISTER_TOKEN_BYTES)?;
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if let Some(parent) = path.parent() {
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std::fs::create_dir_all(parent).ok();
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}
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std::fs::write(path, format!("{token}\n"))
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.with_context(|| format!("write registration token to {}", path.display()))?;
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let _ = std::fs::set_permissions(path, std::fs::Permissions::from_mode(0o600));
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tracing::info!(path = %path.display(), "matrix: generated registration token");
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Ok(token)
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}
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/// Build the localpart of a matrix user id for `agent`. Matrix
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/// usernames are 1-255 chars from the `[a-z0-9._=-/]` alphabet; agent
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/// names already conform (hyperhive enforces a strict subset), so no
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/// escaping is needed at the boundary.
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fn user_localpart(agent: &str) -> &str {
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agent
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}
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/// Send a single registration POST and parse the response. Returns
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/// `Ok((status, body))` on any successful HTTP round-trip (including
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/// the expected 401 from the first UIAA leg); errors only on transport
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/// failure. Body is the parsed JSON value — UIAA passes session +
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/// flow state via JSON, never via headers.
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async fn register_post(
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client: &reqwest::Client,
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body: &serde_json::Value,
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) -> Result<(StatusCode, serde_json::Value)> {
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let url = format!("{MATRIX_HTTP}/_matrix/client/v3/register");
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let resp = client
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.post(&url)
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.json(body)
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.send()
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.await
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.context("matrix: POST /register")?;
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let status = resp.status();
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let json = resp
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.json::<serde_json::Value>()
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.await
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.context("matrix: parse /register response")?;
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Ok((status, json))
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}
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/// Generate a throwaway random password for matrix UIAA registration.
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/// `PASSWORD_BYTES` raw bytes ⇒ 64-char hex string. Agents authenticate
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/// by `access_token` so the password is protocol overhead we never
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/// persist; the operator path in `hivectl` lets the caller supply a
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/// real password instead so they can log into a matrix web client
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/// (`m.login.password`).
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pub fn random_password() -> Result<String> {
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random_hex(PASSWORD_BYTES)
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}
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/// Run the matrix-spec UIAA flow to register `agent` with the given
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/// `password` and return the resulting access token. Two round-trips:
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/// first POST elicits the 401 + session id, second POST supplies the
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/// registration token in the `auth` block. If the homeserver returns
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/// 200 on the first POST (no flow stages required — `allow_registration`
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/// with no token), we take the access token directly.
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///
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/// Caller picks the password: agents use [`random_password`] (throwaway
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/// — they auth by `access_token`), operators on the `hivectl` path
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/// supply their own so they can log into matrix web clients.
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async fn register_user(
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client: &reqwest::Client,
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agent: &str,
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register_token: &str,
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password: &str,
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) -> Result<String> {
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let localpart = user_localpart(agent);
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let initial = serde_json::json!({
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"username": localpart,
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"password": password,
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// device_id stays stable across re-runs of ensure_user_for so
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// a re-mint doesn't strand orphan devices in tuwunel.
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"device_id": format!("hyperhive-{agent}"),
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"initial_device_display_name": format!("hyperhive ({agent})"),
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"inhibit_login": false,
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});
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let (status, body) = register_post(client, &initial).await?;
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// Some servers accept the first POST when allow_registration is
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// open. Take the access_token + we're done.
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if status.is_success() {
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return extract_access_token(&body);
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}
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if status != StatusCode::UNAUTHORIZED {
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anyhow::bail!("matrix: /register first leg HTTP {status}, body: {body}");
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}
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let session = body["session"]
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.as_str()
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.with_context(|| format!("matrix: missing UIAA session in 401, body: {body}"))?;
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let authed = serde_json::json!({
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"username": localpart,
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"password": password,
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"device_id": format!("hyperhive-{agent}"),
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"initial_device_display_name": format!("hyperhive ({agent})"),
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"inhibit_login": false,
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"auth": {
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"type": "m.login.registration_token",
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"token": register_token,
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"session": session,
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},
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});
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let (status, body) = register_post(client, &authed).await?;
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if !status.is_success() {
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anyhow::bail!("matrix: /register auth leg HTTP {status}, body: {body}");
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}
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extract_access_token(&body)
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}
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/// Pull `access_token` out of a successful /register response.
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fn extract_access_token(body: &serde_json::Value) -> Result<String> {
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body["access_token"]
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.as_str()
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.map(str::to_owned)
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.with_context(|| format!("matrix: missing access_token in response: {body}"))
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}
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/// Login with `m.login.password` and return the access token. Fallback
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/// for when registration fails with `M_USER_IN_USE` — the account
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/// already exists in the homeserver but the token file was lost. Fails
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/// if the stored password no longer matches (e.g. homeserver wiped),
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/// in which case manual recovery via `hivectl matrix create-user` is
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/// required.
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async fn login_user(client: &reqwest::Client, agent: &str, password: &str) -> Result<String> {
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let url = format!("{MATRIX_HTTP}/_matrix/client/v3/login");
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let body = serde_json::json!({
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"type": "m.login.password",
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"identifier": {
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"type": "m.id.user",
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"user": user_localpart(agent),
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},
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"password": password,
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"device_id": format!("hyperhive-{agent}"),
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"initial_device_display_name": format!("hyperhive ({agent})"),
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});
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let resp = client
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.post(&url)
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.json(&body)
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.send()
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.await
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.context("matrix: POST /login")?;
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let status = resp.status();
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let json = resp
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.json::<serde_json::Value>()
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.await
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.context("matrix: parse /login response")?;
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if !status.is_success() {
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anyhow::bail!("matrix: /login HTTP {status} for agent {agent}, body: {json}");
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}
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extract_access_token(&json)
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}
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/// Ensure `name` has a matrix user + token file on the local
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/// homeserver. Skips provisioning entirely if the token file already
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/// exists (treating a present token as proof the account is good).
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/// To force re-provisioning, delete the token file.
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///
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/// When registration fails with `M_USER_IN_USE` (account exists in the
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/// homeserver but the token file was deleted) this falls back to
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/// `m.login.password` using the persisted `matrix-password` file. If
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/// that file is also missing, recovery requires manual intervention:
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/// `hivectl matrix create-user <name> --password <pw>`.
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///
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/// `client` is shared across the sweep so we build one reqwest
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/// connection pool for all agents rather than one per call.
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pub async fn ensure_user_for(
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client: &reqwest::Client,
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name: &str,
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register_token: &str,
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) -> Result<()> {
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use std::os::unix::fs::PermissionsExt;
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let path = token_path(name);
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if path.exists()
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&& let Ok(existing) = std::fs::read_to_string(&path)
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&& !existing.trim().is_empty()
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{
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tracing::debug!(%name, "matrix: token already present");
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return Ok(());
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}
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// One-time migration: move the password from the old location inside
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// agent_notes_dir (purgeable) to the new location outside it.
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let new_pw_path = password_path(name);
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let old_pw_path = legacy_password_path(name);
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if !new_pw_path.exists() && old_pw_path.exists() {
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if let Some(parent) = new_pw_path.parent() {
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std::fs::create_dir_all(parent).ok();
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}
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if let Err(e) = std::fs::rename(&old_pw_path, &new_pw_path) {
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// Rename across filesystems or read-only src — copy + delete.
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if let Ok(content) = std::fs::read(&old_pw_path) {
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if std::fs::write(&new_pw_path, &content).is_ok() {
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let _ = std::fs::remove_file(&old_pw_path);
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tracing::info!(%name, "matrix: migrated password file to non-purgeable location");
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}
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} else {
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tracing::warn!(%name, rename_error = ?e, "matrix: password migration failed — could not read old path (old path stays)");
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}
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} else {
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tracing::info!(%name, "matrix: migrated password file to non-purgeable location");
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}
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}
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let password = random_password()?;
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let access_token = match register_user(client, name, register_token, &password).await {
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Ok(token) => {
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// Successful registration — persist the password so we can
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// fall back to login if the token file is deleted later.
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let pw_path = password_path(name);
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if let Some(parent) = pw_path.parent() {
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std::fs::create_dir_all(parent).ok();
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}
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if let Err(e) = std::fs::write(&pw_path, format!("{password}\n")) {
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tracing::warn!(%name, error = ?e, "matrix: failed to persist password (token still saved)");
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} else {
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let _ = std::fs::set_permissions(&pw_path, std::fs::Permissions::from_mode(0o600));
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}
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token
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}
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Err(reg_err) if reg_err.to_string().contains("M_USER_IN_USE") => {
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// Account already exists — try to re-login with the stored password.
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tracing::info!(%name, "matrix: user already exists, attempting login with stored password");
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let pw_path = password_path(name);
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let stored = std::fs::read_to_string(&pw_path)
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.ok()
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.map(|s| s.trim().to_owned())
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.filter(|s| !s.is_empty())
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.with_context(|| {
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format!(
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"matrix: user {name} already exists in homeserver but the stored \
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password is missing — run:\n\
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hivectl matrix reset-password {name}\n\
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hivectl matrix create-user {name}"
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)
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})?;
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login_user(client, name, &stored).await.with_context(|| {
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format!(
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"matrix: login fallback for {name} failed — if homeserver was wiped, delete \
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the matrix-password file and retry"
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)
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})?
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}
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Err(other) => return Err(other),
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};
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if let Some(parent) = path.parent() {
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std::fs::create_dir_all(parent).ok();
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}
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std::fs::write(&path, format!("{access_token}\n"))
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.with_context(|| format!("matrix: write token to {}", path.display()))?;
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let _ = std::fs::set_permissions(&path, std::fs::Permissions::from_mode(0o600));
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crate::lifecycle::chown_to_agent(name, &path, "matrix");
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tracing::info!(%name, path = %path.display(), "matrix: provisioned access token");
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Ok(())
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}
|
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|
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/// Register a matrix account for `name` with the supplied `password`
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/// and return the freshly-minted access token. Unlike [`ensure_user_for`],
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/// the token is **not** persisted to disk — the caller is responsible
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/// for storing it. Used by `hivectl matrix create-user` for human
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/// (non-agent) accounts so we don't create stray
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/// `/var/lib/hyperhive/agents/<name>/` directories for users that
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/// aren't agents. For operator accounts the caller passes a real
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/// password so the operator can `m.login.password` into matrix web
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/// clients afterwards; for headless agent re-provisioning the caller
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/// can pass [`random_password`] to keep the existing throwaway
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/// behaviour.
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///
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/// **Not idempotent** (unlike [`forge::provision_user_token`]): the
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/// matrix UIAA `/register` endpoint returns `M_USER_IN_USE` (HTTP 400)
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/// on second call for the same localpart. Callers re-running this for
|
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/// a known-existing matrix user should expect a hard error from this
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/// fn and route to a password-reset path instead.
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pub async fn provision_user_token(
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client: &reqwest::Client,
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name: &str,
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register_token: &str,
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password: &str,
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) -> Result<String> {
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register_user(client, name, register_token, password).await
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}
|
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|
|
/// Per-agent matrix sync: ensure the agent has a matrix account + token.
|
|
/// All operations are idempotent; failures are logged as warnings but
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/// don't abort the caller.
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|
pub async fn sync_agent(client: &reqwest::Client, name: &str, register_token: &str) {
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if let Err(e) = ensure_user_for(client, name, register_token).await {
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tracing::warn!(%name, error = ?e, "matrix: ensure_user failed");
|
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}
|
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}
|
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|
|
/// Standalone per-agent sync that handles its own setup: checks if
|
|
/// hive-matrix is present, reads the registration token, and builds
|
|
/// an HTTP client before delegating to [`sync_agent`]. Mirrors the
|
|
/// setup in [`ensure_all`] so the rebuild path and the startup sweep
|
|
/// stay equivalent. No-op when the matrix container is absent.
|
|
pub async fn sync_agent_standalone(name: &str) {
|
|
if !is_present().await {
|
|
return;
|
|
}
|
|
let register_token = match ensure_register_token() {
|
|
Ok(t) => t,
|
|
Err(e) => {
|
|
tracing::warn!(%name, error = ?e, "matrix: ensure_register_token failed");
|
|
return;
|
|
}
|
|
};
|
|
let client = match reqwest::Client::builder()
|
|
.timeout(std::time::Duration::from_secs(HTTP_TIMEOUT_SECS))
|
|
.build()
|
|
{
|
|
Ok(c) => c,
|
|
Err(e) => {
|
|
tracing::warn!(%name, error = ?e, "matrix: build HTTP client failed");
|
|
return;
|
|
}
|
|
};
|
|
sync_agent(&client, name, ®ister_token).await;
|
|
}
|
|
|
|
/// Ensure the hive system admin matrix user exists and its token is
|
|
/// persisted at [`admin_token_path()`]. Must be called BEFORE
|
|
/// [`ensure_all`]'s agent loop so this account is the first to register
|
|
/// and becomes the homeserver admin automatically (Conduit/tuwunel:
|
|
/// first registered user = admin).
|
|
///
|
|
/// Idempotent — skips when the token file already exists and is
|
|
/// non-empty. Does NOT promote the account via API (that requires
|
|
/// admin rights which this fn bootstraps); on a fresh homeserver the
|
|
/// first-registered rule fires automatically; on an existing homeserver
|
|
/// the operator must promote the account once via `hivectl matrix
|
|
/// `hivectl matrix promote-user hive` or the conduit admin room.
|
|
pub async fn ensure_admin_user(client: &reqwest::Client, register_token: &str) -> Result<()> {
|
|
use std::os::unix::fs::PermissionsExt;
|
|
let path = admin_token_path();
|
|
if path.exists()
|
|
&& let Ok(existing) = std::fs::read_to_string(&path)
|
|
&& !existing.trim().is_empty()
|
|
{
|
|
tracing::debug!("matrix: hive admin token already present");
|
|
return Ok(());
|
|
}
|
|
let password = random_password()?;
|
|
let access_token = match register_user(client, HIVE_ADMIN_LOCALPART, register_token, &password)
|
|
.await
|
|
{
|
|
Ok(token) => {
|
|
let pw_path = password_path(HIVE_ADMIN_LOCALPART);
|
|
if let Some(parent) = pw_path.parent() {
|
|
std::fs::create_dir_all(parent).ok();
|
|
}
|
|
if let Err(e) = std::fs::write(&pw_path, format!("{password}\n")) {
|
|
tracing::warn!(error = ?e, "matrix: failed to persist hive admin password");
|
|
} else {
|
|
let _ = std::fs::set_permissions(
|
|
&pw_path,
|
|
std::fs::Permissions::from_mode(0o600),
|
|
);
|
|
}
|
|
token
|
|
}
|
|
Err(reg_err) if reg_err.to_string().contains("M_USER_IN_USE") => {
|
|
tracing::info!("matrix: hive admin user already exists, re-logging in");
|
|
let pw_path = password_path(HIVE_ADMIN_LOCALPART);
|
|
let stored = std::fs::read_to_string(&pw_path)
|
|
.ok()
|
|
.map(|s| s.trim().to_owned())
|
|
.filter(|s| !s.is_empty())
|
|
.with_context(|| {
|
|
format!(
|
|
"matrix: hive admin user exists but password missing at {} — \
|
|
manual recovery: reset password via admin API or conduit admin room",
|
|
pw_path.display()
|
|
)
|
|
})?;
|
|
login_user(client, HIVE_ADMIN_LOCALPART, &stored).await?
|
|
}
|
|
Err(other) => return Err(other),
|
|
};
|
|
if let Some(parent) = path.parent() {
|
|
std::fs::create_dir_all(parent).ok();
|
|
}
|
|
std::fs::write(&path, format!("{access_token}\n"))
|
|
.with_context(|| format!("matrix: write hive admin token to {}", path.display()))?;
|
|
let _ = std::fs::set_permissions(&path, std::fs::Permissions::from_mode(0o600));
|
|
tracing::info!(path = %path.display(), "matrix: provisioned hive admin token");
|
|
Ok(())
|
|
}
|
|
|
|
/// Call `PUT /_synapse/admin/v2/users/@{localpart}:{server_name}` with
|
|
/// `{"admin": true}` to promote a user to homeserver admin.
|
|
/// Requires the hive admin access token at [`admin_token_path()`].
|
|
pub async fn promote_user_to_admin(
|
|
client: &reqwest::Client,
|
|
admin_token: &str,
|
|
localpart: &str,
|
|
server_name: &str,
|
|
) -> Result<()> {
|
|
// URL-encode the @user:server path segment manually — only `@` and
|
|
// `:` need escaping; localpart + server_name use only safe chars.
|
|
let url = format!(
|
|
"{MATRIX_HTTP}/_synapse/admin/v2/users/%40{localpart}%3A{server_name}"
|
|
);
|
|
let resp = client
|
|
.put(&url)
|
|
.bearer_auth(admin_token)
|
|
.json(&serde_json::json!({"admin": true}))
|
|
.send()
|
|
.await
|
|
.context("matrix: PUT /_synapse/admin/v2/users (promote)")?;
|
|
let status = resp.status();
|
|
if status.is_success() {
|
|
return Ok(());
|
|
}
|
|
let body = resp.json::<serde_json::Value>().await.unwrap_or_default();
|
|
anyhow::bail!(
|
|
"matrix: promote @{localpart}:{server_name} to admin: HTTP {status}, body: {body}\n\
|
|
note: tuwunel must implement /_synapse/admin/v2/users; if 404 use the conduit admin room instead"
|
|
)
|
|
}
|
|
|
|
/// Call `PUT /_synapse/admin/v2/users/@{localpart}:{server_name}` with
|
|
/// `{"password": new_password}` to reset a user's password.
|
|
/// Writes the new password to the non-purgeable creds path so
|
|
/// [`ensure_user_for`] can re-login on next provisioning sweep.
|
|
pub async fn reset_user_password(
|
|
client: &reqwest::Client,
|
|
admin_token: &str,
|
|
localpart: &str,
|
|
server_name: &str,
|
|
new_password: &str,
|
|
) -> Result<()> {
|
|
let url = format!(
|
|
"{MATRIX_HTTP}/_synapse/admin/v2/users/%40{localpart}%3A{server_name}"
|
|
);
|
|
let resp = client
|
|
.put(&url)
|
|
.bearer_auth(admin_token)
|
|
.json(&serde_json::json!({"password": new_password}))
|
|
.send()
|
|
.await
|
|
.context("matrix: PUT /_synapse/admin/v2/users (reset password)")?;
|
|
let status = resp.status();
|
|
if status.is_success() {
|
|
// Persist the new password so ensure_user_for can re-login.
|
|
let pw_path = password_path(localpart);
|
|
if let Some(parent) = pw_path.parent() {
|
|
std::fs::create_dir_all(parent).ok();
|
|
}
|
|
if let Err(e) = std::fs::write(&pw_path, format!("{new_password}\n")) {
|
|
tracing::warn!(%localpart, error = ?e, "matrix: failed to persist reset password");
|
|
} else {
|
|
use std::os::unix::fs::PermissionsExt;
|
|
let _ = std::fs::set_permissions(
|
|
&pw_path,
|
|
std::fs::Permissions::from_mode(0o600),
|
|
);
|
|
}
|
|
return Ok(());
|
|
}
|
|
let body = resp.json::<serde_json::Value>().await.unwrap_or_default();
|
|
anyhow::bail!(
|
|
"matrix: reset password for @{localpart}:{server_name}: HTTP {status}, body: {body}\n\
|
|
note: tuwunel must implement /_synapse/admin/v2/users; if 404 use the conduit admin room instead"
|
|
)
|
|
}
|
|
|
|
/// Discover the matrix `server_name` from the running homeserver via
|
|
/// `GET /_matrix/key/v2/server` (unauthenticated federation key endpoint).
|
|
/// The response JSON always includes `"server_name"` per the matrix spec.
|
|
pub async fn discover_server_name(client: &reqwest::Client) -> Result<String> {
|
|
let url = format!("{MATRIX_HTTP}/_matrix/key/v2/server");
|
|
let resp = client
|
|
.get(&url)
|
|
.send()
|
|
.await
|
|
.context("matrix: GET /_matrix/key/v2/server")?;
|
|
let status = resp.status();
|
|
let body = resp
|
|
.json::<serde_json::Value>()
|
|
.await
|
|
.context("matrix: parse /_matrix/key/v2/server response")?;
|
|
if !status.is_success() {
|
|
anyhow::bail!(
|
|
"matrix: /_matrix/key/v2/server returned HTTP {status}, body: {body}"
|
|
);
|
|
}
|
|
body["server_name"]
|
|
.as_str()
|
|
.map(str::to_owned)
|
|
.with_context(|| {
|
|
format!("matrix: /_matrix/key/v2/server response missing server_name field: {body}")
|
|
})
|
|
}
|
|
|
|
/// Read the hive admin access token from disk. Returns an error if it
|
|
/// is absent — callers should gate their admin-API calls on this.
|
|
pub fn read_admin_token() -> Result<String> {
|
|
let path = admin_token_path();
|
|
std::fs::read_to_string(&path)
|
|
.ok()
|
|
.map(|s| s.trim().to_owned())
|
|
.filter(|s| !s.is_empty())
|
|
.with_context(|| {
|
|
format!(
|
|
"hive admin matrix token not found at {} — \
|
|
ensure hive-c0re has started at least once with matrix enabled \
|
|
(it provisions the admin account on boot)",
|
|
path.display()
|
|
)
|
|
})
|
|
}
|
|
|
|
/// Create the hive Matrix Space room using the admin account and persist
|
|
/// its room ID to [`hive_space_room_id_path()`]. Idempotent — returns
|
|
/// the stored room ID immediately if the file already exists.
|
|
///
|
|
/// The Space is a private `m.space` room owned by `@hive`. All agents
|
|
/// are invited after their accounts are provisioned in [`ensure_all`].
|
|
pub async fn ensure_hive_space(
|
|
client: &reqwest::Client,
|
|
admin_token: &str,
|
|
) -> Result<String> {
|
|
use std::os::unix::fs::PermissionsExt;
|
|
let path = hive_space_room_id_path();
|
|
if let Ok(existing) = std::fs::read_to_string(&path) {
|
|
let trimmed = existing.trim().to_owned();
|
|
if !trimmed.is_empty() {
|
|
tracing::debug!(room_id = %trimmed, "matrix: hive space already provisioned");
|
|
return Ok(trimmed);
|
|
}
|
|
}
|
|
let url = format!("{MATRIX_HTTP}/_matrix/client/v3/createRoom");
|
|
let body = serde_json::json!({
|
|
"name": "hive",
|
|
"creation_content": { "type": "m.space" },
|
|
"preset": "private_chat",
|
|
"visibility": "private",
|
|
});
|
|
let resp = client
|
|
.post(&url)
|
|
.bearer_auth(admin_token)
|
|
.json(&body)
|
|
.send()
|
|
.await
|
|
.context("matrix: POST /createRoom (hive space)")?;
|
|
let status = resp.status();
|
|
let json = resp
|
|
.json::<serde_json::Value>()
|
|
.await
|
|
.context("matrix: parse /createRoom response")?;
|
|
if !status.is_success() {
|
|
anyhow::bail!("matrix: createRoom HTTP {status}, body: {json}");
|
|
}
|
|
let room_id = json["room_id"]
|
|
.as_str()
|
|
.with_context(|| format!("matrix: createRoom missing room_id: {json}"))?
|
|
.to_owned();
|
|
if let Some(parent) = path.parent() {
|
|
std::fs::create_dir_all(parent).ok();
|
|
}
|
|
std::fs::write(&path, format!("{room_id}\n"))
|
|
.with_context(|| format!("matrix: write space room_id to {}", path.display()))?;
|
|
let _ = std::fs::set_permissions(&path, std::fs::Permissions::from_mode(0o600));
|
|
tracing::info!(%room_id, "matrix: created hive space");
|
|
Ok(room_id)
|
|
}
|
|
|
|
/// Invite `@{localpart}:{server_name}` to `room_id` using the admin
|
|
/// account. Idempotent — treats already-member responses as success.
|
|
async fn invite_to_room(
|
|
client: &reqwest::Client,
|
|
admin_token: &str,
|
|
room_id: &str,
|
|
localpart: &str,
|
|
server_name: &str,
|
|
) -> Result<()> {
|
|
// `:` must be percent-encoded in the room-id path segment; `!` is
|
|
// permitted in URL path characters per RFC 3986.
|
|
let encoded_room_id = room_id.replace(':', "%3A");
|
|
let url = format!("{MATRIX_HTTP}/_matrix/client/v3/rooms/{encoded_room_id}/invite");
|
|
let user_id = format!("@{localpart}:{server_name}");
|
|
let resp = client
|
|
.post(&url)
|
|
.bearer_auth(admin_token)
|
|
.json(&serde_json::json!({ "user_id": user_id }))
|
|
.send()
|
|
.await
|
|
.with_context(|| format!("matrix: POST /rooms/.../invite for {user_id}"))?;
|
|
let status = resp.status();
|
|
if status.is_success() {
|
|
tracing::debug!(%user_id, %room_id, "matrix: invited to hive space");
|
|
return Ok(());
|
|
}
|
|
// 403 with M_FORBIDDEN or M_BAD_STATE typically means the user is
|
|
// already a member or has a pending invite — both are fine.
|
|
if status == StatusCode::FORBIDDEN {
|
|
let body = resp.json::<serde_json::Value>().await.unwrap_or_default();
|
|
let errcode = body["errcode"].as_str().unwrap_or("");
|
|
if errcode == "M_FORBIDDEN" || errcode == "M_BAD_STATE" {
|
|
tracing::debug!(%user_id, %room_id, %errcode, "matrix: invite skipped (already member/invited)");
|
|
return Ok(());
|
|
}
|
|
anyhow::bail!("matrix: invite {user_id} to {room_id}: HTTP {status}, body: {body}");
|
|
}
|
|
let body = resp.json::<serde_json::Value>().await.unwrap_or_default();
|
|
anyhow::bail!("matrix: invite {user_id} to {room_id}: HTTP {status}, body: {body}")
|
|
}
|
|
|
|
/// Sweep every existing container (manager + sub-agents) and ensure
|
|
/// each has a matrix user + token on the local homeserver. Called once
|
|
/// at hive-c0re startup, alongside `forge::ensure_all`. No-op when the
|
|
/// hive-matrix container isn't running. Per-step failures are logged
|
|
/// but don't abort the sweep.
|
|
pub async fn ensure_all() {
|
|
if !is_present().await {
|
|
tracing::debug!("matrix: hive-matrix container absent, skipping user sweep");
|
|
return;
|
|
}
|
|
let register_token = match ensure_register_token() {
|
|
Ok(t) => t,
|
|
Err(e) => {
|
|
tracing::warn!(error = ?e, "matrix: ensure_register_token failed");
|
|
return;
|
|
}
|
|
};
|
|
// One HTTP client for the whole sweep — connection pool is
|
|
// reused across agents.
|
|
let client = match reqwest::Client::builder()
|
|
.timeout(std::time::Duration::from_secs(HTTP_TIMEOUT_SECS))
|
|
.build()
|
|
{
|
|
Ok(c) => c,
|
|
Err(e) => {
|
|
tracing::warn!(error = ?e, "matrix: build HTTP client failed; skipping sweep");
|
|
return;
|
|
}
|
|
};
|
|
// Provision hive admin user FIRST so it's the first registered
|
|
// account on a fresh homeserver (Conduit/tuwunel makes the first
|
|
// registered user admin automatically).
|
|
if let Err(e) = ensure_admin_user(&client, ®ister_token).await {
|
|
tracing::warn!(error = ?e, "matrix: ensure_admin_user failed");
|
|
}
|
|
let Ok(containers) = crate::lifecycle::list().await else {
|
|
tracing::warn!("matrix: nixos-container list failed; skipping user sweep");
|
|
return;
|
|
};
|
|
let mut agent_names: Vec<String> = Vec::new();
|
|
for c in &containers {
|
|
let Some(name) = c.strip_prefix(crate::lifecycle::AGENT_PREFIX) else {
|
|
continue;
|
|
};
|
|
sync_agent(&client, name, ®ister_token).await;
|
|
agent_names.push(name.to_owned());
|
|
}
|
|
|
|
// Provision the hive Space and invite all agents (+ the admin account).
|
|
// server_name is needed to form full Matrix user IDs for invites.
|
|
let admin_token = match read_admin_token() {
|
|
Ok(t) => t,
|
|
Err(e) => {
|
|
tracing::warn!(error = ?e, "matrix: skipping hive space provisioning (no admin token)");
|
|
return;
|
|
}
|
|
};
|
|
let room_id = match ensure_hive_space(&client, &admin_token).await {
|
|
Ok(id) => id,
|
|
Err(e) => {
|
|
tracing::warn!(error = ?e, "matrix: ensure_hive_space failed");
|
|
return;
|
|
}
|
|
};
|
|
let server_name = match discover_server_name(&client).await {
|
|
Ok(s) => s,
|
|
Err(e) => {
|
|
tracing::warn!(error = ?e, "matrix: discover_server_name failed; skipping space invites");
|
|
return;
|
|
}
|
|
};
|
|
// Invite @hive admin first, then all agents.
|
|
if let Err(e) =
|
|
invite_to_room(&client, &admin_token, &room_id, HIVE_ADMIN_LOCALPART, &server_name).await
|
|
{
|
|
tracing::warn!(error = ?e, "matrix: invite @hive to space failed");
|
|
}
|
|
for name in &agent_names {
|
|
if let Err(e) =
|
|
invite_to_room(&client, &admin_token, &room_id, name, &server_name).await
|
|
{
|
|
tracing::warn!(%name, error = ?e, "matrix: invite agent to space failed");
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn random_hex_is_well_formed_and_correct_length() {
|
|
let h = random_hex(16).expect("/dev/urandom readable");
|
|
assert_eq!(h.len(), 32);
|
|
assert!(h.chars().all(|c| c.is_ascii_hexdigit()));
|
|
}
|
|
|
|
#[test]
|
|
fn random_hex_two_calls_differ() {
|
|
// Sanity check — not a statistical claim, just guards
|
|
// against ever accidentally returning a constant.
|
|
let a = random_hex(16).expect("/dev/urandom readable");
|
|
let b = random_hex(16).expect("/dev/urandom readable");
|
|
assert_ne!(a, b);
|
|
}
|
|
|
|
#[test]
|
|
fn extract_access_token_pulls_from_success_body() {
|
|
let body = serde_json::json!({
|
|
"user_id": "@alice:matrix.example.org",
|
|
"access_token": "syt_abc123",
|
|
"device_id": "ABC",
|
|
});
|
|
assert_eq!(extract_access_token(&body).unwrap(), "syt_abc123");
|
|
}
|
|
|
|
#[test]
|
|
fn extract_access_token_errors_on_missing_field() {
|
|
let body = serde_json::json!({"user_id": "@alice:matrix.example.org"});
|
|
let err = extract_access_token(&body).unwrap_err();
|
|
assert!(err.to_string().contains("missing access_token"));
|
|
}
|
|
}
|