iris-chat 0.1.67

Iris Chat command line client and shared encrypted chat core
Documentation 
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use super::account::{device_approval_bootstrap_label, device_approval_pairing_invite};
use super::*;

impl AppCore {
    pub(super) fn start_linked_device(&mut self, _owner_input: &str) {
        self.push_debug_log("session.start_linked", "create device approval request");
        self.state.busy.linking_device = true;
        self.emit_state();

        if let Err(error) = self.create_pending_linked_device() {
            self.state.toast = Some(error.to_string());
        }

        self.state.busy.linking_device = false;
        self.screen_stack = vec![Screen::AddDevice];
        self.rebuild_state();
        self.emit_state();
    }

    fn create_pending_linked_device(&mut self) -> anyhow::Result<()> {
        self.stop_pending_linked_device();
        if self.device_approval_relay_urls.len() != 1 {
            anyhow::bail!("Device approval requires exactly one approval relay.");
        }

        let device_keys = Keys::generate();
        let device_pubkey = device_keys.public_key();
        let current_device_labels = self.current_device_labels.clone();
        let local_request = create_nostr_identity_device_approval_request(
            &device_keys,
            CreateNostrIdentityDeviceApprovalRequestOptions {
                request_keys: None,
                request_secret: None,
                requested_at: i64::try_from(unix_now().get()).unwrap_or(i64::MAX),
                request_type: Some("device_link".to_string()),
                resources: Vec::new(),
                expires_at: None,
                profile_id: None,
                admin_app_key_pubkey: None,
                label: current_device_labels
                    .as_ref()
                    .and_then(|labels| labels.device_label.as_deref())
                    .and_then(device_approval_bootstrap_label),
            },
        )?;
        let invite =
            device_approval_pairing_invite(device_pubkey, &local_request.request.request_secret)?;
        let bootstrap = nostr_identity_device_approval_bootstrap(&local_request.request)?;
        let url = encode_nostr_identity_device_approval_bootstrap(&bootstrap, None)?;
        self.install_pending_linked_device(device_keys, bootstrap, invite, url, true);
        Ok(())
    }

    pub(super) fn restore_pending_linked_device(
        &mut self,
        device_nsec: &str,
        approval_bootstrap_json: &str,
    ) {
        self.deferred_startup_restore = None;
        self.state.busy.restoring_session = true;
        self.emit_state();
        let result = (|| -> anyhow::Result<()> {
            let device_keys = Keys::parse(device_nsec.trim())?;
            let bootstrap: NostrIdentityDeviceApprovalBootstrap =
                serde_json::from_str(approval_bootstrap_json)?;
            if PublicKey::parse(&bootstrap.device_app_key_npub)? != device_keys.public_key() {
                anyhow::bail!("Stored device link does not match its secret key.");
            }
            let invite = device_approval_pairing_invite(
                device_keys.public_key(),
                &bootstrap.request_secret,
            )?;
            let url = encode_nostr_identity_device_approval_bootstrap(&bootstrap, None)?;
            self.stop_pending_linked_device();
            self.install_pending_linked_device(device_keys, bootstrap, invite, url, false);
            Ok(())
        })();
        if let Err(error) = result {
            self.state.toast = Some(error.to_string());
            let _ = self.update_tx.send(AppUpdate::ClearPendingDeviceLink);
        }
        self.state.busy.restoring_session = false;
        self.screen_stack = vec![Screen::AddDevice];
        self.rebuild_state();
        self.emit_state();
    }
}

pub(super) fn validate_link_authorization(
    event: &Event,
    owner: PublicKey,
    device: &Keys,
    peer_device_id: &str,
) -> anyhow::Result<()> {
    if !link_approver_is_authorized(event, owner, peer_device_id)
        || resolve_app_keys_owner_for_device(event, device.public_key())? != Some(owner)
    {
        anyhow::bail!("Link authorization is incomplete.");
    }
    Ok(())
}

pub(super) fn link_approver_is_authorized(
    event: &Event,
    owner: PublicKey,
    peer_device_id: &str,
) -> bool {
    if event.pubkey != owner {
        return false;
    }
    let Ok(peer_device) = PublicKey::from_hex(peer_device_id) else {
        return false;
    };
    let Ok(app_keys) = AppKeys::from_event(event) else {
        return false;
    };
    peer_device == owner || app_keys.get_device(&peer_device).is_some()
}

pub(super) async fn connect_pending_device_link_client(client: &Client, relay_urls: &[RelayUrl]) {
    // SDK disconnect reports Terminated before its connection task has stopped.
    // Reusing that relay immediately can set Pending while the old task is still
    // running, leaving reconnect stuck in its backoff. This dedicated client uses
    // default relay options and Client-level notifications, so replace only its
    // terminated relay instances; normal network reconnection stays untouched.
    for (url, relay) in client.relays().await {
        if relay_urls.contains(&url) && relay.status() == RelayStatus::Terminated {
            let _ = client.force_remove_relay(url).await;
        }
    }
    ensure_session_relays_configured(client, relay_urls).await;
    connect_client_with_timeout(
        client,
        Duration::from_secs(PENDING_DEVICE_LINK_CONNECT_TIMEOUT_SECS),
    )
    .await;
}