401 lines
16 KiB
JavaScript
401 lines
16 KiB
JavaScript
/**
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* NIP-07 Nostr Provider Shim — Archipelago
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*
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* In an Archipelago iframe, requests go directly to the parent dashboard.
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* In a browser tab or companion WebView, a dashboard-origin signer frame
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* supplies the same identity picker and consent UI. No opener is required,
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* and private keys never leave the node backend.
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*/
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(function () {
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'use strict';
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if (window.__archipelagoNostr) return;
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window.__archipelagoNostr = true;
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var providerScript = document.currentScript;
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var autoNip98 = !(providerScript && providerScript.hasAttribute('data-no-nip98'));
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var embedded = window !== window.top;
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var pending = {}, nextId = 1, queuedMessages = [];
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var identitySelection = null;
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var selectedIdentity = null, identitySubscribers = [];
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var selectedPublicKey = null, selectedPublicKeyTimer = null;
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var signerFrame = null, signerReady = embedded, signerInitialised = embedded;
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var signerVisible = false, signerHideWaiters = [];
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var appReady = embedded || document.readyState === 'complete';
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function dashboardOrigin() {
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var url = new URL(window.location.href);
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url.port = '';
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return url.origin;
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}
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function inferAppId() {
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var configured = providerScript && providerScript.getAttribute('data-app-id');
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if (configured) return configured;
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var route = window.location.pathname.match(/^\/app\/([a-z0-9._-]+)(?:\/|$)/i);
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if (route) return route[1].toLowerCase();
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var ports = { '7778': 'indeedhub', '8337': 'archipelago-source' };
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return ports[window.location.port] || ('app-' + (window.location.port || 'dashboard'));
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}
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function sendToSignerFrame(message) {
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if (!signerFrame || !signerFrame.contentWindow) return;
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signerFrame.contentWindow.postMessage(message, dashboardOrigin());
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}
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function postToSigner(message) {
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if (embedded) {
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window.parent.postMessage(message, '*');
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return;
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}
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if (!signerFrame) createSignerFrame();
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// A loaded iframe is not yet an initialised signer. Requests that arrive
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// while the host app is still booting must follow signer-init, otherwise
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// the signer correctly rejects them because it has no app id/origin yet.
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if (!signerReady || !signerInitialised || !signerFrame || !signerFrame.contentWindow) {
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queuedMessages.push(message);
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return;
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}
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sendToSignerFrame(message);
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}
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function setSignerVisible(visible) {
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if (!signerFrame) return;
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signerVisible = visible;
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signerFrame.style.display = 'block';
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signerFrame.style.visibility = 'visible';
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signerFrame.style.pointerEvents = visible ? 'auto' : 'none';
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signerFrame.style.opacity = visible ? '1' : '0';
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signerFrame.style.top = '0';
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signerFrame.style.left = '0';
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signerFrame.style.width = visible ? '100vw' : '1px';
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signerFrame.style.height = visible ? '100vh' : '1px';
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signerFrame.style.transform = visible ? 'none' : 'translate(-10000px, -10000px)';
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signerFrame.setAttribute('aria-hidden', visible ? 'false' : 'true');
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if (!visible && signerHideWaiters.length) {
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var waiters = signerHideWaiters.splice(0);
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waiters.forEach(function (resolve) { resolve(); });
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}
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}
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// NIP-98 returns before the signer's short success animation has closed.
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// Reloading an Android WebView while that topmost cross-origin frame is
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// still visible can leave a blank compositor surface until the user reloads
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// again. Let the broker finish and hide first, with a bounded fallback so a
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// lost UI message can never prevent authentication from completing.
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function waitForSignerToHide() {
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if (embedded || !signerVisible) return Promise.resolve();
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return new Promise(function (resolve) {
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var settled = false;
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function finish() {
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if (settled) return;
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settled = true;
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resolve();
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}
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signerHideWaiters.push(finish);
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setTimeout(finish, 1500);
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});
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}
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function createSignerFrame() {
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if (embedded || signerFrame) return;
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signerFrame = document.createElement('iframe');
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signerFrame.id = 'archipelago-nostr-signer';
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signerFrame.title = 'Archipelago Nostr signer';
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signerFrame.src = dashboardOrigin() + '/nostr-signer';
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// Keep the broker document alive between requests, but park its compositor
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// surface physically off-screen. Removing or display-hiding a full-screen
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// cross-origin iframe can leave Android WebView (and some mobile Chromium
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// builds) showing that stale black/grey surface until a manual refresh.
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// A 1px off-screen frame cannot obscure the app and also avoids reloading
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// the signer between getPublicKey/signEvent calls.
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signerFrame.style.cssText = 'position:fixed;top:0;left:0;width:1px;height:1px;transform:translate(-10000px,-10000px);border:0;z-index:2147483647;background:transparent;display:block;visibility:visible;opacity:0;pointer-events:none;';
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signerFrame.setAttribute('aria-hidden', 'true');
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document.documentElement.appendChild(signerFrame);
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}
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function initialiseSignerWhenReady() {
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if (embedded || signerInitialised || !signerReady || !appReady) return;
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sendToSignerFrame({
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type: 'archipelago:signer-init',
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appId: inferAppId(),
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appName: (document.title || 'App').replace(/\s*[|—-]\s*Archipelago\s*$/i, ''),
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});
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signerInitialised = true;
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while (queuedMessages.length) sendToSignerFrame(queuedMessages.shift());
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}
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function request(method, params) {
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return new Promise(function (resolve, reject) {
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var id = nextId++;
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pending[id] = { resolve: resolve, reject: reject };
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postToSigner({ type: 'nostr-request', id: id, method: method, params: params || {} });
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setTimeout(function () {
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if (pending[id]) {
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pending[id].reject(new Error('NIP-07 timeout'));
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delete pending[id];
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}
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}, 30000);
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});
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}
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// Archipelago-aware apps can call this immediately before an explicit login
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// action. Standard NIP-07 intentionally has no "choose account" method, so
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// getPublicKey() alone cannot distinguish a fresh login from a routine signer
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// call. Keeping this as an optional companion API preserves NIP-07 compatibility
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// while allowing users to change their node identity when they log in again.
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function selectIdentity() {
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if (identitySelection) {
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identitySelection.reject(new Error('A node identity choice is already open'));
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clearTimeout(identitySelection.timer);
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}
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return new Promise(function (resolve, reject) {
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var timer = setTimeout(function () {
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if (!identitySelection) return;
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identitySelection = null;
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reject(new Error('Identity selection timed out'));
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}, 30000);
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identitySelection = { resolve: resolve, reject: reject, timer: timer };
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postToSigner({
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type: embedded
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? 'archipelago:identity:request'
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: 'archipelago:signer-select-identity',
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force: true,
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});
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});
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}
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function finishIdentitySelection(identity) {
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// The identity picker is itself an explicit choice to disclose this key.
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// Keep it briefly so the login library's immediately-following
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// getPublicKey() does not depend on another cross-origin WebView round trip.
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// This is deliberately one-shot and short-lived.
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if (identity && typeof identity.nostr_pubkey === 'string' && identity.nostr_pubkey) {
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selectedIdentity = { nostr_pubkey: identity.nostr_pubkey };
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selectedPublicKey = identity.nostr_pubkey;
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clearTimeout(selectedPublicKeyTimer);
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selectedPublicKeyTimer = setTimeout(function () {
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selectedPublicKey = null;
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selectedPublicKeyTimer = null;
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}, 15000);
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identitySubscribers.slice().forEach(function (subscriber) {
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try { subscriber(selectedIdentity); } catch (error) {
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console.error('[nostr-provider] identity listener failed:', error);
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}
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});
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}
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if (!identitySelection) return;
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var selection = identitySelection;
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identitySelection = null;
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clearTimeout(selection.timer);
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selection.resolve(identity);
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}
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function cancelIdentitySelection() {
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if (!identitySelection) return;
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var selection = identitySelection;
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identitySelection = null;
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clearTimeout(selection.timer);
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selection.reject(new Error('Identity selection cancelled'));
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}
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function getPublicKey() {
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// Most NIP-07 apps call getPublicKey directly from their login button. A
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// live user activation lets the node offer account switching to those apps
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// without making background account restoration reopen the picker. Apps
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// with an async login flow should call archipelagoNostr.selectIdentity()
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// explicitly; its result is consumed here so the picker is not shown twice.
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if (selectedPublicKey) {
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var publicKey = selectedPublicKey;
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selectedPublicKey = null;
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clearTimeout(selectedPublicKeyTimer);
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selectedPublicKeyTimer = null;
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return Promise.resolve(publicKey);
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}
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if (navigator.userActivation && navigator.userActivation.isActive) {
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return selectIdentity().then(function () {
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return getPublicKey();
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});
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}
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return request('getPublicKey');
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}
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// Framework components often mount just after the provider receives the
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// eager first-launch identity. A sticky subscription prevents that choice
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// from being lost between window.load and React/Vue effect registration.
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function onIdentitySelected(subscriber) {
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if (typeof subscriber !== 'function') {
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throw new TypeError('Identity subscriber must be a function');
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}
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identitySubscribers.push(subscriber);
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if (selectedIdentity) {
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try { subscriber(selectedIdentity); } catch (error) {
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console.error('[nostr-provider] identity listener failed:', error);
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}
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}
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return function () {
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identitySubscribers = identitySubscribers.filter(function (entry) {
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return entry !== subscriber;
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});
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};
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}
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function getSelectedIdentity() {
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return selectedIdentity && { nostr_pubkey: selectedIdentity.nostr_pubkey };
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}
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window.addEventListener('message', function (e) {
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var validSource = embedded
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? e.source === window.parent
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: signerFrame && e.source === signerFrame.contentWindow && e.origin === dashboardOrigin();
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if (!validSource || !e.data) return;
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if (!embedded && e.data.type === 'archipelago:signer-ready') {
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signerReady = true;
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initialiseSignerWhenReady();
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return;
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}
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if (!embedded && e.data.type === 'archipelago:signer-show') {
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setSignerVisible(true);
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return;
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}
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if (!embedded && e.data.type === 'archipelago:signer-hide') {
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setSignerVisible(false);
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return;
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}
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if (!embedded && e.data.type === 'archipelago:signer-identity') {
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finishIdentitySelection(e.data.identity);
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window.postMessage({
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type: 'archipelago:identity',
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nostr_pubkey: e.data.identity && e.data.identity.nostr_pubkey,
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}, window.location.origin);
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return;
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}
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if (embedded && e.data.type === 'archipelago:identity') {
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finishIdentitySelection(e.data);
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return;
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}
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if (e.data.type === 'archipelago:identity-cancelled' ||
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e.data.type === 'archipelago:signer-identity-cancelled') {
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cancelIdentitySelection();
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return;
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}
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if (e.data.type !== 'nostr-response') return;
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var handler = pending[e.data.id];
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if (!handler) return;
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delete pending[e.data.id];
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e.data.error ? handler.reject(new Error(e.data.error)) : handler.resolve(e.data.result);
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});
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window.nostr = {
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getPublicKey: getPublicKey,
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signEvent: function (event) { return request('signEvent', { event: event }); },
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sign: function (event) { return request('signEvent', { event: event }); },
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getRelays: function () { return request('getRelays'); },
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nip04: {
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encrypt: function (pubkey, plaintext) { return request('nip04.encrypt', { pubkey: pubkey, plaintext: plaintext }); },
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decrypt: function (pubkey, ciphertext) { return request('nip04.decrypt', { pubkey: pubkey, ciphertext: ciphertext }); },
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},
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nip44: {
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encrypt: function (pubkey, plaintext) { return request('nip44.encrypt', { pubkey: pubkey, plaintext: plaintext }); },
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decrypt: function (pubkey, ciphertext) { return request('nip44.decrypt', { pubkey: pubkey, ciphertext: ciphertext }); },
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},
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};
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window.archipelagoNostr = {
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selectIdentity: selectIdentity,
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onIdentitySelected: onIdentitySelected,
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getSelectedIdentity: getSelectedIdentity,
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};
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// Optional direct NIP-98 session bootstrap for apps that use it. Signing
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// itself is shown by the shared broker, so this deliberately adds no second
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// full-screen loader inside the app.
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var authDone = false;
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function doNip98Auth(pubkey) {
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if (authDone) return;
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authDone = true;
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var healthUrl = window.location.origin + '/api/nostr-auth/health';
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var sessionUrl = window.location.origin + '/api/auth/nostr/session';
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var healthController = new AbortController();
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var healthTimeout = setTimeout(function () { healthController.abort(); }, 3000);
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fetch(healthUrl, { signal: healthController.signal }).then(function (response) {
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clearTimeout(healthTimeout);
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if (!response.ok) throw new Error('Health ' + response.status);
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return window.nostr.signEvent({
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kind: 27235,
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created_at: Math.floor(Date.now() / 1000),
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content: '',
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pubkey: pubkey,
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tags: [['u', sessionUrl], ['method', 'POST']],
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});
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}).then(function (signed) {
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var controller = new AbortController();
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setTimeout(function () { controller.abort(); }, 10000);
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return fetch(sessionUrl, {
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method: 'POST',
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headers: { 'Authorization': 'Nostr ' + btoa(JSON.stringify(signed)) },
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signal: controller.signal,
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});
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}).then(function (response) {
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if (!response.ok) throw new Error('Auth failed: ' + response.status);
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return response.json();
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}).then(function (data) {
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if (!data.accessToken) throw new Error('Authentication returned no access token');
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sessionStorage.setItem('nostr_token', data.accessToken);
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sessionStorage.setItem('nostr_pubkey', pubkey);
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if (data.refreshToken) sessionStorage.setItem('refresh_token', data.refreshToken);
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return waitForSignerToHide().then(function () {
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// Give WebView one paint after the iframe is hidden before replacing
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// the document. The stored session is already durable at this point.
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return new Promise(function (resolve) {
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window.requestAnimationFrame(function () {
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window.requestAnimationFrame(resolve);
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});
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});
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}).then(function () {
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if (window.ArchipelagoSurface &&
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typeof window.ArchipelagoSurface.expectPageTransition === 'function') {
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window.ArchipelagoSurface.expectPageTransition();
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}
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window.location.reload();
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});
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}).catch(function (error) {
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authDone = false;
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var message = error && error.message ? error.message : String(error);
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if (message.toLowerCase().indexOf('abort') > -1) message = 'API timeout';
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console.warn('[nostr-provider] NIP-98 skipped:', message);
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});
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}
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window.addEventListener('message', function (e) {
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if (!e.data || e.data.type !== 'archipelago:identity' || !autoNip98) return;
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if (e.source !== window && e.source !== window.parent) return;
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var pubkey = e.data.nostr_pubkey;
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if (!pubkey) return;
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try {
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var token = sessionStorage.getItem('nostr_token');
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if (token && token.indexOf('mock-') === -1) return;
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} catch (_) {}
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setTimeout(function () { doNip98Auth(pubkey); }, 1500);
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});
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// Only identity-aware apps open the chooser eagerly. The provider is also
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// injected into several ordinary app proxies; those stay untouched unless
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// they actually invoke a NIP-07 method, which lazily creates the broker.
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if (!embedded && ['indeedhub', 'nostrudel', 'archipelago-source'].indexOf(inferAppId()) !== -1) {
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createSignerFrame();
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}
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// The provider is injected in <head>, before framework startup. Waiting for
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// load makes the first-launch picker meaningful: React/Vue login listeners
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// and account stores exist before a fast identity choice can be emitted.
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if (!embedded && !appReady) {
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window.addEventListener('load', function () {
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appReady = true;
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initialiseSignerWhenReady();
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}, { once: true });
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}
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})();
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