1224 lines
44 KiB
Rust
1224 lines
44 KiB
Rust
use std::collections::HashMap;
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use std::str::FromStr;
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use std::time::Duration;
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use anyhow::{Error, anyhow, bail};
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use bitcoin_hashes::sha1::Hash as Sha1Hash;
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use gpui::{App, AppContext, Context, Entity, EventEmitter, Global, Task};
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use nostr::event::IntoEventBuilder;
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use nostr_connect::prelude::*;
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use nostr_sdk::client::SyncSummary;
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use nostr_sdk::prelude::*;
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use signed_core::{Announcement, build_state, filters, repo_addr};
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use signed_nostr::{SignedAuthUrlHandler, UniversalSigner, Update};
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use crate::git_store::GitStore;
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/// Keyring entry holding the user credential (`nsec1...` or `bunker://...`
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/// with an embedded `?master=<nsec>` NIP-46 session key).
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pub const USER_KEYRING: &str = "Signed Safe Storage";
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/// Timeout for NIP-46 signer responses.
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pub const NOSTR_CONNECT_TIMEOUT: u64 = 60;
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/// Relays connected at startup, before any user-specific relay config is known.
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pub const BOOTSTRAP_RELAYS: [&str; 4] = [
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"wss://relay.primal.net",
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"wss://relay.ditto.pub",
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"wss://index.ngit.dev",
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"wss://profiles.nostr1.com",
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];
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/// Relays used for indexing user's relay list (NIP-65).
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pub const INDEXER_RELAYS: [&str; 2] = ["wss://indexer.coracle.social", "wss://user.kindpag.es"];
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#[derive(Debug, Clone)]
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pub enum BackendEvent {
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/// User has no signer configured.
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SignerRequired,
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/// The stored identity is NIP-49 encrypted (`ncryptsec1...`); a
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/// passphrase is required to decrypt it before the session can resume.
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PassphraseRequired,
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/// The signer has changed (login/logout/account switch).
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SignerChanged,
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/// Relay bootstrap finished.
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Connected,
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/// A new event was received from a relay and stored in the database.
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NostrUpdate(Update),
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/// A negentropy sync completed; the database was updated directly,
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/// so stores should re-query (no [`BackendEvent::NostrUpdate`] is fired
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/// for synced events).
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Synced,
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/// A negentropy sync is in flight. Stores may re-query to render
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/// incrementally; UI can show `current`/`total` progress.
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SyncProgress {
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/// Total events to process.
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total: u64,
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/// Events processed so far.
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current: u64,
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},
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/// An event built locally was signed, broadcast and stored.
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Published(Box<Event>),
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/// An error occurred.
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Error(String),
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}
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impl BackendEvent {
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pub fn error<T>(error: T) -> Self
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where
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T: Into<String>,
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{
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Self::Error(error.into())
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}
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}
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/// Global backend entity: owns the nostr client, the signer and the
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/// notification pump. Stores subscribe to [`BackendEvent`] and re-query the
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/// local database when relevant updates arrive.
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pub struct Backend {
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client: Client,
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signer: UniversalSigner,
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current_user: Option<PublicKey>,
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connected: bool,
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sync_progress: Option<(u64, u64)>,
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/// Whether the stored credential is NIP-49 encrypted and a passphrase
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/// is still needed to resume the session.
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passphrase_required: bool,
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tasks: Vec<Task<Result<(), Error>>>,
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}
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struct GlobalBackend(Entity<Backend>);
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impl Global for GlobalBackend {}
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impl EventEmitter<BackendEvent> for Backend {}
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impl Backend {
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/// Retrieve the global backend.
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pub fn global(cx: &App) -> Entity<Self> {
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cx.global::<GlobalBackend>().0.clone()
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}
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pub(crate) fn set_global(entity: Entity<Self>, cx: &mut App) {
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cx.set_global(GlobalBackend(entity));
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}
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pub(crate) fn new(client: Client, signer: UniversalSigner, cx: &mut Context<Self>) -> Self {
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let pump_client = client.clone();
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let pump = cx.spawn(async move |this, cx| {
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let mut notifications = pump_client.notifications();
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while let Some(notification) = notifications.next().await {
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let ClientNotification::Event { event, .. } = notification else {
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continue;
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};
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let update = Update::from_event(&event);
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if this
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.update(cx, |_, cx| cx.emit(BackendEvent::NostrUpdate(update)))
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.is_err()
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{
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break;
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}
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}
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Ok(())
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});
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let mut this = Self {
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client,
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signer,
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current_user: None,
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connected: false,
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sync_progress: None,
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passphrase_required: false,
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tasks: vec![pump],
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};
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this.bootstrap(cx);
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this
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}
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/// Bootstrap the client: connect to the default relays (indexers as
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/// discovery-only) and restore the saved session, if any.
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fn bootstrap(&mut self, cx: &mut Context<Self>) {
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let client = self.client.clone();
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let task = cx.background_spawn(async move {
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for url in BOOTSTRAP_RELAYS {
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client.add_relay(url).await?;
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}
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for url in INDEXER_RELAYS {
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client
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.add_relay(url)
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.capabilities(RelayCapabilities::DISCOVERY)
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.await?;
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}
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client.connect().await;
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Ok::<(), Error>(())
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});
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self.tasks.push(cx.spawn(async move |this, cx| {
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match task.await {
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Ok(()) => {
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this.update(cx, |this, cx| {
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this.connected = true;
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cx.emit(BackendEvent::Connected);
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cx.notify();
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})?;
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}
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Err(e) => {
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this.update(cx, |_this, cx| cx.emit(BackendEvent::error(e.to_string())))?;
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}
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}
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Ok(())
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}));
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self.restore_session(cx);
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}
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/// Restore the saved session from the keyring. Emits
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/// [`BackendEvent::SignerRequired`] if no credential is stored, or
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/// [`BackendEvent::PassphraseRequired`] if the stored identity is
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/// NIP-49 encrypted.
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pub fn restore_session(&mut self, cx: &mut Context<Self>) {
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if cfg!(target_arch = "wasm32") {
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cx.emit(BackendEvent::SignerRequired);
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return;
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}
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let user = cx.read_credentials(USER_KEYRING);
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self.tasks.push(cx.spawn(async move |this, cx| {
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let content = match user.await {
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Ok(Some((_username, secret))) => String::from_utf8(secret)?,
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_ => {
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this.update(cx, |_, cx| cx.emit(BackendEvent::SignerRequired))?;
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return Ok(());
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}
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};
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let result = async {
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if content.starts_with("nsec1") {
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let keys = Keys::new(SecretKey::parse(&content)?);
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this.update(cx, |this, cx| this.set_signer(keys, cx))?;
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} else if content.starts_with("bunker://") {
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let (base, keys) = extract_master_key(&content);
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let uri = NostrConnectUri::parse(base)?;
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let mut signer = NostrConnect::new(
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uri,
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keys,
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Duration::from_secs(NOSTR_CONNECT_TIMEOUT),
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None,
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)?;
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signer.auth_url_handler(SignedAuthUrlHandler);
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this.update(cx, |this, cx| this.set_signer(signer, cx))?;
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} else if content.starts_with("ncryptsec1") {
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// Encrypted identity: a passphrase is required to
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// decrypt it before the session can resume.
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log::warn!("stored identity is ncryptsec-encrypted; waiting for passphrase");
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this.update(cx, |this, cx| {
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this.passphrase_required = true;
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cx.emit(BackendEvent::PassphraseRequired);
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})?;
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} else {
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this.update(cx, |_, cx| cx.emit(BackendEvent::SignerRequired))?;
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}
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Ok::<_, Error>(())
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}
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.await;
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if let Err(e) = result {
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this.update(cx, |_, cx| {
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cx.emit(BackendEvent::error(e.to_string()));
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cx.emit(BackendEvent::SignerRequired);
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})?;
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}
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Ok(())
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}));
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}
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/// Decrypt the NIP-49 encrypted credential stored in the keyring with
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/// the given passphrase and resume the session.
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///
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/// The scrypt decryption runs off the UI thread. The returned task
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/// yields the public key on success, or the failure reason (e.g. wrong
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/// passphrase), so callers can render inline errors.
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pub fn restore_with_passphrase(
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&mut self,
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password: &str,
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cx: &mut Context<Self>,
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) -> Task<Result<PublicKey, Error>> {
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let password = password.to_owned();
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let user = cx.read_credentials(USER_KEYRING);
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cx.spawn(async move |this, cx| {
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let content = user
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.await?
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.map(|(_username, secret)| String::from_utf8(secret))
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.transpose()?
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.ok_or_else(|| anyhow!("no stored credential; nothing to unlock"))?;
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if !content.starts_with("ncryptsec1") {
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return Err(anyhow!("stored credential is not passphrase-encrypted"));
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}
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let decrypt_task = cx.background_spawn(async move {
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let encrypted = EncryptedSecretKey::from_bech32(&content)?;
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let secret = encrypted.decrypt(&password)?;
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Ok::<_, Error>(Keys::new(secret))
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});
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let keys = decrypt_task.await?;
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let public_key = keys.public_key();
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this.update(cx, |this, cx| this.set_signer(keys, cx))?;
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Ok(public_key)
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})
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}
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/// Create a new identity: generate keys, encrypt the secret key with the
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/// passphrase (NIP-49) and persist it in the keyring, then publish the
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/// user's NIP-65 relay list, metadata and grasp list.
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///
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/// The heavy encryption runs off the UI thread. The returned task yields
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/// the new public key on success, or the failure reason, so callers can
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/// render progress and inline errors.
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pub fn create_identity(
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&mut self,
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name: &str,
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password: &str,
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cx: &mut Context<Self>,
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) -> Task<Result<PublicKey, Error>> {
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let name = name.trim().to_owned();
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let password = password.to_owned();
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if name.is_empty() || name.len() > 255 {
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return Task::ready(Err(anyhow!("Name must be 1-255 characters")));
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}
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if password.is_empty() {
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return Task::ready(Err(anyhow!("Passphrase must not be empty")));
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}
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cx.spawn(async move |this, cx| {
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let job = cx.background_spawn(async move {
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let keys = Keys::generate();
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let encrypted =
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EncryptedSecretKey::new(keys.secret_key(), &password, 16, KeySecurity::Medium)?;
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let ncryptsec = encrypted.to_bech32()?;
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Ok::<_, Error>((keys, ncryptsec))
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});
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let (keys, ncryptsec) = job.await?;
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let public_key = keys.public_key();
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// Persist the encrypted credential.
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let write = cx.update(|cx| {
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cx.write_credentials(USER_KEYRING, &public_key.to_hex(), ncryptsec.as_bytes())
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});
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write.await?;
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this.update(cx, |this, cx| {
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// Become the new identity, so the publishes below are
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// signed with the new keys.
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this.signer.swap_inner(keys);
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this.current_user = Some(public_key);
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this.bootstrap_user(public_key, cx);
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cx.emit(BackendEvent::SignerChanged);
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cx.notify();
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let relays: Vec<(RelayUrl, Option<RelayMetadata>)> = [
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(
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RelayUrl::parse("wss://relay.primal.net").unwrap(),
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Some(RelayMetadata::Read),
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),
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(
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RelayUrl::parse("wss://relay.ditto.pub").unwrap(),
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Some(RelayMetadata::Read),
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),
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(
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RelayUrl::parse("wss://relay.nostr.net").unwrap(),
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Some(RelayMetadata::Write),
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),
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(
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RelayUrl::parse("wss://nos.lol").unwrap(),
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Some(RelayMetadata::Write),
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),
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]
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.to_vec();
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this.send_fire_and_forget(RelayList::new(relays).into_event_builder(), cx);
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let metadata = Metadata::new()
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.name(&name)
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.display_name(&name)
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.into_event_builder();
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this.send_fire_and_forget(metadata, cx);
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let grasp_servers: Vec<RelayUrl> = ["wss://gitnostr.com", "wss://relay.ngit.dev"]
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.into_iter()
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.map(|url| RelayUrl::parse(url).expect("valid relay URL"))
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.collect();
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this.send_fire_and_forget(
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GitUserGraspList { grasp_servers }.into_event_builder(),
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cx,
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);
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})?;
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Ok(public_key)
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})
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}
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/// Create a new repository: initialize a local clone with a `main`
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/// branch and a `README.md`, publish the NIP-34 announcement and the
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/// repository state to the grasp relays, then push the initial commit
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/// to each grasp server.
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///
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/// The events must reach the grasp servers *before* the push: GRASP
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/// servers hold the signed state event in "purgatory" and only accept
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/// a push for a not-yet-existing repository while that authorization is
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/// pending (it expires after 30 minutes), like gitworkshop and ngit.
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///
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/// The git work (init, commit, push) runs on background threads. The
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/// returned task yields the published announcement on success, so
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/// callers can open the new repository right away. The announcement's
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/// `relays` tag carries the grasp servers, which are also added to the
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/// relay pool so the published events reach them.
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pub fn create_repository(
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&mut self,
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name: &str,
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description: &str,
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grasp_servers: Vec<RelayUrl>,
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cx: &mut Context<Self>,
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) -> Task<Result<Announcement, Error>> {
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let name = name.trim().to_owned();
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let description = description.trim().to_owned();
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if name.is_empty() {
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return Task::ready(Err(anyhow!("Repository name is required")));
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}
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if grasp_servers.is_empty() {
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return Task::ready(Err(anyhow!("Add at least one grasp server")));
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}
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let Some(public_key) = self.current_user else {
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return Task::ready(Err(anyhow!("Sign in to create a repository")));
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};
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// The repository identifier is derived from the name, like ngit and
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// gitworkshop: spaces become hyphens, other non-alphanumeric
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// characters (except `/`) become hyphens, case is preserved.
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let repo_id = identifier_from_name(&name);
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if repo_id.is_empty() || repo_id.len() > 100 {
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return Task::ready(Err(anyhow!(
|
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"Repository name must produce an identifier of 1-100 characters"
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)));
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}
|
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if !repo_id.chars().any(|c| c.is_ascii_alphanumeric()) {
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return Task::ready(Err(anyhow!(
|
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"Repository name must contain at least one alphanumeric character"
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)));
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}
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let addr = repo_addr(public_key, repo_id.clone());
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let cache = GitStore::global(cx).cache().clone();
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let path = cache.repo_path(&addr);
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let owner = public_key
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.to_bech32()
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.unwrap_or_else(|_| public_key.to_hex());
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let servers = grasp_servers.clone();
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|
|
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cx.spawn(async move |this, cx| {
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// 1. Initialize the local clone (main branch + README + initial
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// commit) on a background thread.
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let work = cx.background_spawn({
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let path = path.clone();
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let name = name.clone();
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let description = description.clone();
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let owner = owner.clone();
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let repo_id = repo_id.clone();
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let servers = servers.clone();
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|
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async move {
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let parent = path
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.parent()
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.ok_or_else(|| anyhow!("invalid repository path"))?;
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std::fs::create_dir_all(parent)?;
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let commit = signed_git::init_repository(&path, &name, &description)?;
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|
|
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// Point `origin` at the first grasp server so later
|
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// fetches (and pushes) have a target, like ngit.
|
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if let Some(base) = servers.first().and_then(grasp_base_url) {
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let url = format!("{base}/{owner}/{repo_id}.git");
|
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signed_git::ensure_origin(&path, &url).ok();
|
|
}
|
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Ok::<_, Error>(commit)
|
|
}
|
|
});
|
|
|
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let commit = work.await?;
|
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let commit_sha =
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Sha1Hash::from_str(&commit).map_err(|_| anyhow!("invalid initial commit id"))?;
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|
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// 2. Ensure the grasp servers are in the relay pool; the nostr
|
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// client queues events until each relay is connected.
|
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this.update(cx, |this, cx| {
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let urls: Vec<String> = servers.iter().map(ToString::to_string).collect();
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this.add_relays(urls, cx);
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})?;
|
|
|
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// 3. Publish the announcement, then the state event, to the
|
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// grasp relays. The state event is the push authorization
|
|
// ("purgatory"), so it must be accepted before step 4.
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let announcement = GitRepositoryAnnouncement {
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id: repo_id.clone(),
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name: Some(name.clone()),
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description: (!description.is_empty()).then_some(description.clone()),
|
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web: Vec::new(),
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clone: servers
|
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.iter()
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.filter_map(|relay| grasp_clone_url(relay, &owner, &repo_id))
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.collect(),
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relays: servers.clone(),
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euc: Some(commit_sha),
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maintainers: Vec::new(),
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};
|
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|
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let event = this
|
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.update(cx, |this, cx| {
|
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this.send(announcement.into_event_builder(), cx)
|
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})?
|
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.await?;
|
|
|
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this.update(cx, |this, cx| {
|
|
let builder = build_state(
|
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&repo_id,
|
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&[("refs/heads/main".to_owned(), commit)],
|
|
Some("main"),
|
|
);
|
|
this.send(builder, cx)
|
|
})?
|
|
.await?;
|
|
|
|
// 4. Push the initial commit to every grasp server. A server
|
|
// that fails to accept the push is logged, but the creation
|
|
// only fails when no server accepted it.
|
|
let push = cx.background_spawn({
|
|
let path = path.clone();
|
|
let owner = owner.clone();
|
|
let repo_id = repo_id.clone();
|
|
let servers = servers.clone();
|
|
|
|
async move {
|
|
let mut failures = Vec::new();
|
|
let mut pushed = 0;
|
|
for relay in &servers {
|
|
let Some(base_url) = grasp_base_url(relay) else {
|
|
failures.push(format!("{relay}: no domain"));
|
|
continue;
|
|
};
|
|
match signed_git::push_main(&path, &base_url, &owner, &repo_id) {
|
|
Ok(()) => pushed += 1,
|
|
Err(e) => failures.push(format!("{relay}: {e}")),
|
|
}
|
|
}
|
|
|
|
if pushed == 0 {
|
|
bail!(
|
|
"could not push the repository to any grasp server: {}",
|
|
failures.join("; ")
|
|
);
|
|
}
|
|
for failure in failures {
|
|
log::warn!("grasp push failed: {failure}");
|
|
}
|
|
|
|
Ok::<_, Error>(())
|
|
}
|
|
});
|
|
push.await?;
|
|
|
|
Announcement::from_event(&event)
|
|
.ok_or_else(|| anyhow!("failed to parse the published announcement"))
|
|
})
|
|
}
|
|
|
|
/// Login with an `nsec1...` key or a `bunker://...` URI, dispatching on
|
|
/// the credential's prefix.
|
|
pub fn login(&mut self, credential: &str, cx: &mut Context<Self>) {
|
|
let credential = credential.trim();
|
|
|
|
if credential.starts_with("nsec1") {
|
|
self.login_with_nsec(credential, cx);
|
|
} else if credential.starts_with("bunker://") {
|
|
self.login_with_bunker(credential, cx);
|
|
} else {
|
|
cx.emit(BackendEvent::error(
|
|
"Unsupported credential, expected nsec1... or bunker://...",
|
|
));
|
|
}
|
|
}
|
|
|
|
/// Create a fresh identity and login with it. The generated key is
|
|
/// persisted in the keyring like any other `nsec` credential.
|
|
pub fn login_with_new_identity(&mut self, cx: &mut Context<Self>) {
|
|
let nsec = Keys::generate()
|
|
.secret_key()
|
|
.to_bech32()
|
|
.expect("infallible");
|
|
self.login_with_nsec(&nsec, cx);
|
|
}
|
|
|
|
/// Login with an `nsec1...` secret key. The credential is verified by
|
|
/// the signer flow and persisted in the keyring.
|
|
pub fn login_with_nsec(&mut self, nsec: &str, cx: &mut Context<Self>) {
|
|
let nsec = nsec.trim().to_owned();
|
|
|
|
let keys = match SecretKey::parse(&nsec) {
|
|
Ok(secret) => Keys::new(secret),
|
|
Err(e) => {
|
|
cx.emit(BackendEvent::error(e.to_string()));
|
|
return;
|
|
}
|
|
};
|
|
|
|
let write =
|
|
cx.write_credentials(USER_KEYRING, &keys.public_key().to_hex(), nsec.as_bytes());
|
|
|
|
self.tasks.push(cx.spawn(async move |this, cx| {
|
|
if let Err(e) = write.await {
|
|
this.update(cx, |_, cx| cx.emit(BackendEvent::error(e.to_string())))?;
|
|
return Ok(());
|
|
}
|
|
|
|
this.update(cx, |this, cx| this.set_signer(keys, cx))?;
|
|
Ok(())
|
|
}));
|
|
}
|
|
|
|
/// Login with a `bunker://...` URI (NIP-46). A fresh session key is
|
|
/// generated and embedded into the stored URI as `?master=<nsec>`, so
|
|
/// no separate keyring entry is needed. The auth URL, if any, is opened
|
|
/// in the default browser. The credential is persisted in the keyring
|
|
/// after the signer proves reachable.
|
|
pub fn login_with_bunker(&mut self, uri: &str, cx: &mut Context<Self>) {
|
|
let uri_string = uri.trim().to_owned();
|
|
|
|
let connect_uri = match NostrConnectUri::parse(&uri_string) {
|
|
Ok(uri) => uri,
|
|
Err(e) => {
|
|
cx.emit(BackendEvent::error(e.to_string()));
|
|
return;
|
|
}
|
|
};
|
|
|
|
let keys = Keys::generate();
|
|
let credential = with_master_key(&uri_string, &keys);
|
|
let write = cx.write_credentials(USER_KEYRING, "bunker", credential.as_bytes());
|
|
|
|
self.tasks.push(cx.spawn(async move |this, cx| {
|
|
let result = async {
|
|
let mut signer = NostrConnect::new(
|
|
connect_uri,
|
|
keys,
|
|
Duration::from_secs(NOSTR_CONNECT_TIMEOUT),
|
|
None,
|
|
)?;
|
|
signer.auth_url_handler(SignedAuthUrlHandler);
|
|
|
|
// Verify the signer before persisting the credential.
|
|
signer.get_public_key_async().await?;
|
|
write.await?;
|
|
|
|
this.update(cx, |this, cx| this.set_signer(signer, cx))?;
|
|
|
|
Ok::<_, Error>(())
|
|
}
|
|
.await;
|
|
|
|
if let Err(e) = result {
|
|
this.update(cx, |_, cx| cx.emit(BackendEvent::error(e.to_string())))?;
|
|
}
|
|
|
|
Ok(())
|
|
}));
|
|
}
|
|
|
|
/// Remove the saved credential and reset to an anonymous session.
|
|
pub fn logout(&mut self, cx: &mut Context<Self>) {
|
|
let delete = cx.delete_credentials(USER_KEYRING);
|
|
|
|
self.tasks.push(cx.spawn(async move |this, cx| {
|
|
delete.await.ok();
|
|
|
|
this.update(cx, |this, cx| {
|
|
this.signer.swap_inner(Keys::generate());
|
|
this.current_user = None;
|
|
this.passphrase_required = false;
|
|
cx.emit(BackendEvent::SignerChanged);
|
|
cx.emit(BackendEvent::SignerRequired);
|
|
cx.notify();
|
|
})?;
|
|
|
|
Ok(())
|
|
}));
|
|
}
|
|
|
|
/// Fetch the user's grasp list (kind `10317`) and add the listed grasp
|
|
/// servers as relays.
|
|
fn bootstrap_user(&mut self, public_key: PublicKey, cx: &mut Context<Self>) {
|
|
let client = self.client.clone();
|
|
|
|
self.tasks.push(cx.spawn(async move |this, cx| {
|
|
let result = async {
|
|
let events = client.fetch_events(filters::grasp_list(public_key)).await?;
|
|
|
|
let urls: Vec<String> = events
|
|
.into_iter()
|
|
.max_by_key(|e| e.created_at)
|
|
.map(|e| {
|
|
e.tags
|
|
.iter()
|
|
.filter(|t| t.kind() == "g")
|
|
.filter_map(|t| t.content().map(str::to_owned))
|
|
.collect()
|
|
})
|
|
.unwrap_or_default();
|
|
|
|
for url in urls {
|
|
client.add_relay(&url).await.ok();
|
|
}
|
|
client.connect().await;
|
|
|
|
Ok::<_, Error>(())
|
|
}
|
|
.await;
|
|
|
|
if let Err(e) = result {
|
|
this.update(cx, |_, cx| cx.emit(BackendEvent::error(e.to_string())))?;
|
|
}
|
|
|
|
Ok(())
|
|
}));
|
|
}
|
|
|
|
/// Get the nostr client.
|
|
pub fn client(&self) -> Client {
|
|
self.client.clone()
|
|
}
|
|
|
|
/// Get the current signer.
|
|
pub fn signer(&self) -> UniversalSigner {
|
|
self.signer.clone()
|
|
}
|
|
|
|
/// Get the current user's public key.
|
|
pub fn current_user(&self) -> Option<PublicKey> {
|
|
self.current_user
|
|
}
|
|
|
|
/// Whether the stored credential is NIP-49 encrypted and a passphrase
|
|
/// is still needed to resume the session.
|
|
pub fn passphrase_required(&self) -> bool {
|
|
self.passphrase_required
|
|
}
|
|
|
|
/// Surface an error message through [`BackendEvent::Error`].
|
|
pub fn emit_error(&mut self, message: impl Into<String>, cx: &mut Context<Self>) {
|
|
cx.emit(BackendEvent::error(message));
|
|
}
|
|
|
|
/// Whether the relay bootstrap has completed.
|
|
pub fn is_connected(&self) -> bool {
|
|
self.connected
|
|
}
|
|
|
|
/// Progress of the in-flight negentropy sync, if any: `(total, current)`.
|
|
pub fn sync_progress(&self) -> Option<(u64, u64)> {
|
|
self.sync_progress
|
|
}
|
|
|
|
/// Update the signer (any type implementing the async signer traits,
|
|
/// e.g. `Keys`, `NostrConnect`, a browser extension proxy).
|
|
pub fn set_signer<T>(&mut self, new_signer: T, cx: &mut Context<Self>)
|
|
where
|
|
T: AsyncGetPublicKey + AsyncSignEvent + AsyncNip44 + 'static,
|
|
<T as AsyncGetPublicKey>::Error: std::error::Error + Send + Sync + 'static,
|
|
<T as AsyncSignEvent>::Error: std::error::Error + Send + Sync + 'static,
|
|
<T as AsyncNip44>::Error: std::error::Error + Send + Sync + 'static,
|
|
{
|
|
let task = cx.spawn(async move |this, cx| {
|
|
match new_signer.get_public_key_async().await {
|
|
Ok(public_key) => {
|
|
this.update(cx, |this, cx| {
|
|
this.signer.swap_inner(new_signer);
|
|
this.current_user = Some(public_key);
|
|
this.passphrase_required = false;
|
|
this.bootstrap_user(public_key, cx);
|
|
cx.emit(BackendEvent::SignerChanged);
|
|
cx.notify();
|
|
})?;
|
|
}
|
|
Err(e) => {
|
|
this.update(cx, |_this, cx| {
|
|
cx.emit(BackendEvent::error(e.to_string()));
|
|
})?;
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
});
|
|
self.tasks.push(task);
|
|
}
|
|
|
|
/// Add relays and connect to them.
|
|
pub fn add_relays(&mut self, urls: Vec<String>, cx: &mut Context<Self>) {
|
|
let client = self.client.clone();
|
|
|
|
let task = cx.background_spawn(async move {
|
|
for url in urls {
|
|
client.add_relay(&url).await?;
|
|
}
|
|
client.connect().await;
|
|
Ok::<(), Error>(())
|
|
});
|
|
|
|
self.tasks.push(cx.spawn(async move |this, cx| {
|
|
match task.await {
|
|
Ok(()) => {
|
|
this.update(cx, |this, cx| {
|
|
this.connected = true;
|
|
cx.emit(BackendEvent::Connected);
|
|
cx.notify();
|
|
})?;
|
|
}
|
|
Err(e) => {
|
|
this.update(cx, |_this, cx| cx.emit(BackendEvent::error(e.to_string())))?;
|
|
}
|
|
}
|
|
Ok(())
|
|
}));
|
|
}
|
|
|
|
/// Add relays used only for discovery (e.g. NIP-65 indexers) and
|
|
/// connect to them. No subscriptions or writes are routed through them.
|
|
pub fn add_discovery_relays(&mut self, urls: Vec<String>, cx: &mut Context<Self>) {
|
|
let client = self.client.clone();
|
|
|
|
let task = cx.background_spawn(async move {
|
|
for url in urls {
|
|
client
|
|
.add_relay(&url)
|
|
.capabilities(RelayCapabilities::DISCOVERY)
|
|
.await?;
|
|
}
|
|
client.connect().await;
|
|
Ok::<(), Error>(())
|
|
});
|
|
|
|
self.tasks.push(cx.spawn(async move |this, cx| {
|
|
if let Err(e) = task.await {
|
|
this.update(cx, |_this, cx| cx.emit(BackendEvent::error(e.to_string())))?;
|
|
}
|
|
Ok(())
|
|
}));
|
|
}
|
|
|
|
/// Start a persistent subscription. Matching events are stored in the
|
|
/// database automatically and surface as [`BackendEvent::NostrUpdate`].
|
|
pub fn subscribe(&mut self, filter: Filter, cx: &mut Context<Self>) {
|
|
let client = self.client.clone();
|
|
|
|
let task = cx.background_spawn(async move { client.subscribe(filter).await.map(|_| ()) });
|
|
|
|
self.tasks.push(cx.spawn(async move |this, cx| {
|
|
if let Err(e) = task.await {
|
|
this.update(cx, |_this, cx| cx.emit(BackendEvent::error(e.to_string())))?;
|
|
}
|
|
Ok(())
|
|
}));
|
|
}
|
|
|
|
/// Connect to relays announced by a repository (NIP-34 `relays` tag) and
|
|
/// fetch its events from them: a one-shot auto-closing subscription for
|
|
/// `filters`, plus a negentropy sync so issues, patches and PRs stored
|
|
/// only on those relays are not missed.
|
|
///
|
|
/// Best-effort: failures are logged, not surfaced, because the bootstrap
|
|
/// relays already cover the repository. The relays stay in the pool, so
|
|
/// events the user publishes for this repository also reach them.
|
|
pub fn connect_repo_relays(
|
|
&mut self,
|
|
relays: Vec<RelayUrl>,
|
|
filters: Vec<Filter>,
|
|
cx: &mut Context<Self>,
|
|
) {
|
|
let client = self.client.clone();
|
|
|
|
self.tasks.push(cx.spawn(async move |_this, _cx| {
|
|
if let Err(e) = connect_repo_relays_only(&client, relays, filters).await {
|
|
log::warn!("repo relay fetch failed: {e}");
|
|
}
|
|
Ok(())
|
|
}));
|
|
}
|
|
|
|
/// Start a one-shot subscription targeted only at the bootstrap relays,
|
|
/// auto-closing after EOSE or a short timeout. Matching events are stored
|
|
/// in the database and surface as [`BackendEvent::NostrUpdate`] while the
|
|
/// subscription is open.
|
|
pub fn subscribe_bootstrap(&mut self, filters: Vec<Filter>, cx: &mut Context<Self>) {
|
|
let client = self.client.clone();
|
|
|
|
let task =
|
|
cx.background_spawn(async move { subscribe_bootstrap_only(&client, filters).await });
|
|
|
|
self.tasks.push(cx.spawn(async move |this, cx| {
|
|
if let Err(e) = task.await {
|
|
this.update(cx, |_this, cx| cx.emit(BackendEvent::error(e.to_string())))?;
|
|
}
|
|
Ok(())
|
|
}));
|
|
}
|
|
|
|
/// Negentropy-sync the given filter against the bootstrap relays:
|
|
/// reconciles the local database with the relays in both directions.
|
|
/// Emits [`BackendEvent::SyncProgress`] while running (throttled to
|
|
/// whole-percent changes) and [`BackendEvent::Synced`] on completion.
|
|
pub fn sync_bootstrap(&mut self, filter: Filter, cx: &mut Context<Self>) {
|
|
let client = self.client.clone();
|
|
|
|
self.sync_progress = Some((0, 0));
|
|
cx.notify();
|
|
|
|
let (tx, mut rx) = SyncProgress::channel();
|
|
|
|
self.tasks.push(cx.spawn(async move |this, cx| {
|
|
let mut last_percent: u64 = 0;
|
|
|
|
while rx.changed().await.is_ok() {
|
|
let progress = *rx.borrow_and_update();
|
|
let percent = (progress.percentage() * 100.0) as u64;
|
|
|
|
if progress.current > 0 && percent != last_percent {
|
|
last_percent = percent;
|
|
|
|
let alive = this.update(cx, |this, cx| {
|
|
this.sync_progress = Some((progress.total, progress.current));
|
|
cx.emit(BackendEvent::SyncProgress {
|
|
total: progress.total,
|
|
current: progress.current,
|
|
});
|
|
cx.notify();
|
|
});
|
|
|
|
if alive.is_err() {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}));
|
|
|
|
let task = cx.background_spawn(async move {
|
|
let opts = SyncOptions::default().progress(tx);
|
|
sync_bootstrap_only(&client, filter, opts).await
|
|
});
|
|
|
|
self.tasks.push(cx.spawn(async move |this, cx| {
|
|
match task.await {
|
|
Ok(summary) => {
|
|
log::debug!(
|
|
"sync done: {} received, {} sent",
|
|
summary.received.len(),
|
|
summary.sent.len()
|
|
);
|
|
this.update(cx, |this, cx| {
|
|
this.sync_progress = None;
|
|
cx.emit(BackendEvent::Synced);
|
|
cx.notify();
|
|
})?;
|
|
}
|
|
Err(e) => {
|
|
this.update(cx, |this, cx| {
|
|
this.sync_progress = None;
|
|
cx.emit(BackendEvent::error(e.to_string()))
|
|
})?;
|
|
}
|
|
}
|
|
Ok(())
|
|
}));
|
|
}
|
|
|
|
/// Sign, broadcast and locally store an event. Emits
|
|
/// [`BackendEvent::Published`] on success so stores can refresh.
|
|
///
|
|
/// The returned task yields the outcome of this specific action, so
|
|
/// callers can show inline progress/errors instead of relying on
|
|
/// the global [`BackendEvent::Error`]. The task is owned by the caller;
|
|
/// dropping it cancels the publish.
|
|
pub fn send(
|
|
&mut self,
|
|
builder: EventBuilder,
|
|
cx: &mut Context<Self>,
|
|
) -> Task<Result<Event, Error>> {
|
|
let client = self.client.clone();
|
|
let signer = self.signer.clone();
|
|
|
|
cx.spawn(async move |this, cx| {
|
|
// Sign with the current signer, broadcast, and save locally so
|
|
// the event is immediately visible to database queries.
|
|
let work = cx.background_spawn(async move {
|
|
let event = builder.finalize_async(&signer).await?;
|
|
let output = client.send_event(&event).await?;
|
|
|
|
if output.success.is_empty() && !output.failed.is_empty() {
|
|
let reasons = output
|
|
.failed
|
|
.values()
|
|
.cloned()
|
|
.collect::<Vec<String>>()
|
|
.join(", ");
|
|
return Err(anyhow!("event not accepted by any relay: {reasons}"));
|
|
}
|
|
|
|
Ok(event)
|
|
});
|
|
|
|
let result = work.await;
|
|
|
|
match &result {
|
|
Ok(event) => {
|
|
this.update(cx, |_this, cx| {
|
|
cx.emit(BackendEvent::Published(Box::new(event.clone())));
|
|
})
|
|
.ok();
|
|
}
|
|
Err(e) => {
|
|
this.update(cx, |_this, cx| {
|
|
cx.emit(BackendEvent::error(e.to_string()));
|
|
})
|
|
.ok();
|
|
}
|
|
}
|
|
|
|
result
|
|
})
|
|
}
|
|
|
|
/// Publish a NIP-34 repository announcement (kind 30617) with the
|
|
/// current signer. The returned task yields the published event, so
|
|
/// callers can show inline progress/errors.
|
|
pub fn publish_announcement(
|
|
&mut self,
|
|
announcement: GitRepositoryAnnouncement,
|
|
cx: &mut Context<Self>,
|
|
) -> Task<Result<Event, Error>> {
|
|
self.send(announcement.into_event_builder(), cx)
|
|
}
|
|
|
|
/// Sign, broadcast and store an event without awaiting the result;
|
|
/// failures surface through [`BackendEvent::Error`]. The spawned task is
|
|
/// owned by the backend, so it is cancelled when the backend is dropped.
|
|
fn send_fire_and_forget(&mut self, builder: EventBuilder, cx: &mut Context<Self>) {
|
|
let task = self.send(builder, cx);
|
|
|
|
self.tasks.push(cx.spawn(async move |this, cx| {
|
|
if let Err(e) = task.await {
|
|
this.update(cx, |_this, cx| {
|
|
cx.emit(BackendEvent::error(e.to_string()));
|
|
})
|
|
.ok();
|
|
}
|
|
Ok(())
|
|
}));
|
|
}
|
|
}
|
|
|
|
/// Add the given relays, connect to them, and fetch the filters: a one-shot
|
|
/// subscription (auto-closing after EOSE) plus a negentropy sync per filter
|
|
/// as a second pass, so events that race with the subscription or relays
|
|
/// with flaky EOSE behavior can't be missed. Relays without NEG-XX support
|
|
/// just fail the sync step; the subscription already covered them.
|
|
async fn connect_repo_relays_only(
|
|
client: &Client,
|
|
relays: Vec<RelayUrl>,
|
|
filters: Vec<Filter>,
|
|
) -> Result<(), Error> {
|
|
if relays.is_empty() {
|
|
return Ok(());
|
|
}
|
|
|
|
for url in &relays {
|
|
client.add_relay(url).await?;
|
|
}
|
|
client.connect().await;
|
|
|
|
let opts = SubscribeAutoCloseOptions::default()
|
|
.exit_policy(ReqExitPolicy::ExitOnEOSE)
|
|
.timeout(Some(Duration::from_secs(10)));
|
|
|
|
let target: HashMap<&str, Vec<Filter>> = relays
|
|
.iter()
|
|
.map(|url| (url.as_str(), filters.clone()))
|
|
.collect();
|
|
client.subscribe(target).close_on(opts).await?;
|
|
|
|
for filter in filters {
|
|
let sync_opts = SyncOptions::default().initial_timeout(Duration::from_secs(5));
|
|
if let Err(e) = client
|
|
.sync(filter)
|
|
.with(relays.iter())
|
|
.opts(sync_opts)
|
|
.await
|
|
{
|
|
log::warn!("repo relay negentropy sync failed: {e}");
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
/// Subscribe only on the bootstrap relays, auto-closing after EOSE or a
|
|
/// short timeout. Use for one-shot data fetches (repo events, profiles)
|
|
/// instead of persistent gossip-routed subscriptions.
|
|
pub(crate) async fn subscribe_bootstrap_only(
|
|
client: &Client,
|
|
filters: Vec<Filter>,
|
|
) -> Result<(), Error> {
|
|
let opts = SubscribeAutoCloseOptions::default()
|
|
.exit_policy(ReqExitPolicy::ExitOnEOSE)
|
|
.timeout(Some(Duration::from_secs(10)));
|
|
|
|
let target: HashMap<&str, Vec<Filter>> = BOOTSTRAP_RELAYS
|
|
.iter()
|
|
.map(|relay| (*relay, filters.clone()))
|
|
.collect();
|
|
|
|
client.subscribe(target).close_on(opts).await?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
/// Negentropy-sync the filter against the bootstrap relays only.
|
|
pub(crate) async fn sync_bootstrap_only(
|
|
client: &Client,
|
|
filter: Filter,
|
|
opts: SyncOptions,
|
|
) -> Result<SyncSummary, Error> {
|
|
let output = client
|
|
.sync(filter)
|
|
.with(BOOTSTRAP_RELAYS)
|
|
.opts(opts)
|
|
.await?;
|
|
Ok(output.value)
|
|
}
|
|
|
|
/// Embed a NIP-46 session key into a bunker URI as `?master=<nsec>`.
|
|
fn with_master_key(uri: &str, keys: &Keys) -> String {
|
|
let separator = if uri.contains('?') { '&' } else { '?' };
|
|
let nsec = keys.secret_key().to_bech32().expect("infallible");
|
|
format!("{uri}{separator}master={nsec}")
|
|
}
|
|
|
|
/// Derive a repository identifier (d-tag) from the repo name, matching ngit
|
|
/// and gitworkshop: spaces become hyphens, other non-alphanumeric characters
|
|
/// (except `/`) become hyphens, case is preserved.
|
|
fn identifier_from_name(name: &str) -> String {
|
|
name.chars()
|
|
.map(|c| {
|
|
if c.is_ascii_alphanumeric() || c == '/' {
|
|
c
|
|
} else {
|
|
'-'
|
|
}
|
|
})
|
|
.collect()
|
|
}
|
|
|
|
/// A `https://<host>` (or `http://<host>` for `ws://` grasp servers, like
|
|
/// ngit) base URL for a grasp server. The repository then lives at
|
|
/// `{base}/{npub}/{repo-id}.git`.
|
|
fn grasp_base_url(relay: &RelayUrl) -> Option<String> {
|
|
// `domain()` drops the port; parse the full URL to keep it (local dev
|
|
// grasp servers commonly run on a custom port).
|
|
let parsed = Url::parse(relay.as_str()).ok()?;
|
|
let host = parsed.host_str()?;
|
|
let port = parsed.port().map(|p| format!(":{p}")).unwrap_or_default();
|
|
// `ws://` grasp servers (e.g. local dev relays) speak plain HTTP;
|
|
// everything else is HTTPS, matching ngit.
|
|
let scheme = if relay.scheme().is_secure() {
|
|
"https"
|
|
} else {
|
|
"http"
|
|
};
|
|
Some(format!("{scheme}://{host}{port}"))
|
|
}
|
|
|
|
/// The GRASP clone URL of a repository on a grasp server, matching the
|
|
/// format ngit announces: `https://<host>/<npub>/<repo-id>.git`.
|
|
fn grasp_clone_url(relay: &RelayUrl, owner: &str, repo_id: &str) -> Option<Url> {
|
|
let base = grasp_base_url(relay)?;
|
|
Url::parse(&format!("{base}/{owner}/{repo_id}.git")).ok()
|
|
}
|
|
|
|
/// Split a stored bunker credential into the plain URI and the session key.
|
|
/// Credentials without an embedded key (legacy) get a fresh one.
|
|
fn extract_master_key(credential: &str) -> (&str, Keys) {
|
|
match credential.split_once("master=") {
|
|
Some((base, nsec)) => {
|
|
let keys = SecretKey::parse(nsec)
|
|
.map(Keys::new)
|
|
.unwrap_or_else(|_| Keys::generate());
|
|
(base.trim_end_matches(['?', '&']), keys)
|
|
}
|
|
None => (credential, Keys::generate()),
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn identifier_from_name_slugs_like_gitworkshop() {
|
|
assert_eq!(identifier_from_name("My Repo"), "My-Repo");
|
|
assert_eq!(identifier_from_name("my-repo"), "my-repo");
|
|
assert_eq!(identifier_from_name("Foo_Bar!"), "Foo-Bar-");
|
|
assert_eq!(identifier_from_name("a/b"), "a/b");
|
|
assert_eq!(identifier_from_name("Café"), "Caf-");
|
|
}
|
|
|
|
#[test]
|
|
fn grasp_base_url_maps_schemes_like_ngit() {
|
|
let wss = RelayUrl::parse("wss://relay.ngit.dev").expect("url");
|
|
assert_eq!(
|
|
grasp_base_url(&wss).as_deref(),
|
|
Some("https://relay.ngit.dev")
|
|
);
|
|
|
|
let ws = RelayUrl::parse("ws://localhost:8080").expect("url");
|
|
assert_eq!(
|
|
grasp_base_url(&ws).as_deref(),
|
|
Some("http://localhost:8080")
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn grasp_clone_url_matches_ngit_format() {
|
|
let relay = RelayUrl::parse("wss://gitnostr.com").expect("url");
|
|
let url = grasp_clone_url(&relay, "npub1test", "my-repo").expect("url");
|
|
assert_eq!(
|
|
url.to_string(),
|
|
"https://gitnostr.com/npub1test/my-repo.git"
|
|
);
|
|
}
|
|
}
|