veilid/veilid-flutter/lib/veilid_js.dart
2023-05-16 21:34:34 -04:00

631 lines
19 KiB
Dart

import 'veilid.dart';
import 'dart:html' as html;
import 'dart:js' as js;
import 'dart:js_util' as js_util;
import 'dart:async';
import 'dart:convert';
import 'dart:typed_data';
import 'veilid_encoding.dart';
//////////////////////////////////////////////////////////
Veilid getVeilid() => VeilidJS();
Object wasm = js_util.getProperty(html.window, "veilid_wasm");
Future<T> _wrapApiPromise<T>(Object p) {
return js_util.promiseToFuture(p).then((value) => value as T).catchError(
(error) => Future<T>.error(
VeilidAPIException.fromJson(jsonDecode(error as String))));
}
class _Ctx {
final int id;
final VeilidJS js;
_Ctx(this.id, this.js);
}
// JS implementation of VeilidRoutingContext
class VeilidRoutingContextJS implements VeilidRoutingContext {
final _Ctx _ctx;
static final Finalizer<_Ctx> _finalizer = Finalizer((ctx) => {
js_util.callMethod(wasm, "release_routing_context", [ctx.id])
});
VeilidRoutingContextJS._(this._ctx) {
_finalizer.attach(this, _ctx, detach: this);
}
@override
VeilidRoutingContextJS withPrivacy() {
int newId =
js_util.callMethod(wasm, "routing_context_with_privacy", [_ctx.id]);
return VeilidRoutingContextJS._(_Ctx(newId, _ctx.js));
}
@override
VeilidRoutingContextJS withCustomPrivacy(Stability stability) {
final newId = js_util.callMethod(
wasm,
"routing_context_with_custom_privacy",
[_ctx.id, jsonEncode(stability)]);
return VeilidRoutingContextJS._(_Ctx(newId, _ctx.js));
}
@override
VeilidRoutingContextJS withSequencing(Sequencing sequencing) {
final newId = js_util.callMethod(wasm, "routing_context_with_sequencing",
[_ctx.id, jsonEncode(sequencing)]);
return VeilidRoutingContextJS._(_Ctx(newId, _ctx.js));
}
@override
Future<Uint8List> appCall(String target, Uint8List request) async {
var encodedRequest = base64UrlNoPadEncode(request);
return base64UrlNoPadDecode(await _wrapApiPromise(js_util.callMethod(
wasm, "routing_context_app_call", [_ctx.id, target, encodedRequest])));
}
@override
Future<void> appMessage(String target, Uint8List message) {
var encodedMessage = base64UrlNoPadEncode(message);
return _wrapApiPromise(js_util.callMethod(wasm,
"routing_context_app_message", [_ctx.id, target, encodedMessage]));
}
@override
Future<DHTRecordDescriptor> createDHTRecord(
CryptoKind kind, DHTSchema schema) async {
return DHTRecordDescriptor.fromJson(jsonDecode(await _wrapApiPromise(js_util
.callMethod(wasm, "routing_context_create_dht_record",
[_ctx.id, kind, jsonEncode(schema)]))));
}
@override
Future<DHTRecordDescriptor> openDHTRecord(
TypedKey key, KeyPair? writer) async {
return DHTRecordDescriptor.fromJson(jsonDecode(await _wrapApiPromise(js_util
.callMethod(wasm, "routing_context_open_dht_record", [
_ctx.id,
jsonEncode(key),
writer != null ? jsonEncode(writer) : null
]))));
}
@override
Future<void> closeDHTRecord(TypedKey key) {
return _wrapApiPromise(js_util.callMethod(
wasm, "routing_context_close_dht_record", [_ctx.id, jsonEncode(key)]));
}
@override
Future<void> deleteDHTRecord(TypedKey key) {
return _wrapApiPromise(js_util.callMethod(
wasm, "routing_context_delete_dht_record", [_ctx.id, jsonEncode(key)]));
}
@override
Future<ValueData?> getDHTValue(
TypedKey key, int subkey, bool forceRefresh) async {
final opt = await _wrapApiPromise(js_util.callMethod(
wasm,
"routing_context_get_dht_value",
[_ctx.id, jsonEncode(key), subkey, forceRefresh]));
return opt == null ? null : ValueData.fromJson(jsonDecode(opt));
}
@override
Future<ValueData?> setDHTValue(
TypedKey key, int subkey, Uint8List data) async {
final opt = await _wrapApiPromise(js_util.callMethod(
wasm,
"routing_context_set_dht_value",
[_ctx.id, jsonEncode(key), subkey, base64UrlNoPadEncode(data)]));
return opt == null ? null : ValueData.fromJson(jsonDecode(opt));
}
@override
Future<Timestamp> watchDHTValues(TypedKey key, ValueSubkeyRange subkeys,
Timestamp expiration, int count) async {
final ts = await _wrapApiPromise(js_util.callMethod(
wasm, "routing_context_watch_dht_values", [
_ctx.id,
jsonEncode(key),
jsonEncode(subkeys),
expiration.toString(),
count
]));
return Timestamp.fromString(ts);
}
@override
Future<bool> cancelDHTWatch(TypedKey key, ValueSubkeyRange subkeys) {
return _wrapApiPromise(js_util.callMethod(
wasm,
"routing_context_cancel_dht_watch",
[_ctx.id, jsonEncode(key), jsonEncode(subkeys)]));
}
}
// JS implementation of VeilidCryptoSystem
class VeilidCryptoSystemJS implements VeilidCryptoSystem {
final CryptoKind _kind;
final VeilidJS _js;
VeilidCryptoSystemJS._(this._js, this._kind) {
// Keep the reference
_js;
}
@override
CryptoKind kind() {
return _kind;
}
@override
Future<SharedSecret> cachedDH(PublicKey key, SecretKey secret) async {
return SharedSecret.fromJson(jsonDecode(await _wrapApiPromise(js_util
.callMethod(wasm, "crypto_cached_dh",
[_kind, jsonEncode(key), jsonEncode(secret)]))));
}
@override
Future<SharedSecret> computeDH(PublicKey key, SecretKey secret) async {
return SharedSecret.fromJson(jsonDecode(await _wrapApiPromise(js_util
.callMethod(wasm, "crypto_compute_dh",
[_kind, jsonEncode(key), jsonEncode(secret)]))));
}
@override
Future<Uint8List> randomBytes(int len) async {
return base64UrlNoPadDecode(await _wrapApiPromise(
js_util.callMethod(wasm, "crypto_random_bytes", [_kind, len])));
}
@override
Future<int> defaultSaltLength() {
return _wrapApiPromise(
js_util.callMethod(wasm, "crypto_default_salt_length", [_kind]));
}
@override
Future<String> hashPassword(Uint8List password, Uint8List salt) {
return _wrapApiPromise(js_util.callMethod(wasm, "crypto_hash_password",
[_kind, base64UrlNoPadEncode(password), base64UrlNoPadEncode(salt)]));
}
@override
Future<bool> verifyPassword(Uint8List password, String passwordHash) {
return _wrapApiPromise(js_util.callMethod(wasm, "crypto_verify_password",
[_kind, base64UrlNoPadEncode(password), passwordHash]));
}
@override
Future<SharedSecret> deriveSharedSecret(
Uint8List password, Uint8List salt) async {
return SharedSecret.fromJson(jsonDecode(await _wrapApiPromise(js_util
.callMethod(wasm, "crypto_derive_shared_secret", [
_kind,
base64UrlNoPadEncode(password),
base64UrlNoPadEncode(salt)
]))));
}
@override
Future<Nonce> randomNonce() async {
return Nonce.fromJson(jsonDecode(await _wrapApiPromise(
js_util.callMethod(wasm, "crypto_random_nonce", [_kind]))));
}
@override
Future<SharedSecret> randomSharedSecret() async {
return SharedSecret.fromJson(jsonDecode(await _wrapApiPromise(
js_util.callMethod(wasm, "crypto_random_shared_secret", [_kind]))));
}
@override
Future<KeyPair> generateKeyPair() async {
return KeyPair.fromJson(jsonDecode(await _wrapApiPromise(
js_util.callMethod(wasm, "crypto_generate_key_pair", [_kind]))));
}
@override
Future<HashDigest> generateHash(Uint8List data) async {
return HashDigest.fromJson(jsonDecode(await _wrapApiPromise(js_util
.callMethod(wasm, "crypto_generate_hash",
[_kind, base64UrlNoPadEncode(data)]))));
}
@override
Future<bool> validateKeyPair(PublicKey key, SecretKey secret) {
return _wrapApiPromise(js_util.callMethod(wasm, "crypto_validate_key_pair",
[_kind, jsonEncode(key), jsonEncode(secret)]));
}
@override
Future<bool> validateHash(Uint8List data, HashDigest hash) {
return _wrapApiPromise(js_util.callMethod(wasm, "crypto_validate_hash",
[_kind, base64UrlNoPadEncode(data), jsonEncode(hash)]));
}
@override
Future<CryptoKeyDistance> distance(CryptoKey key1, CryptoKey key2) async {
return CryptoKeyDistance.fromJson(jsonDecode(await _wrapApiPromise(js_util
.callMethod(wasm, "crypto_distance",
[_kind, jsonEncode(key1), jsonEncode(key2)]))));
}
@override
Future<Signature> sign(
PublicKey key, SecretKey secret, Uint8List data) async {
return Signature.fromJson(jsonDecode(await _wrapApiPromise(js_util
.callMethod(wasm, "crypto_sign", [
_kind,
jsonEncode(key),
jsonEncode(secret),
base64UrlNoPadEncode(data)
]))));
}
@override
Future<void> verify(PublicKey key, Uint8List data, Signature signature) {
return _wrapApiPromise(js_util.callMethod(wasm, "crypto_verify", [
_kind,
jsonEncode(key),
base64UrlNoPadEncode(data),
jsonEncode(signature),
]));
}
@override
Future<int> aeadOverhead() {
return _wrapApiPromise(
js_util.callMethod(wasm, "crypto_aead_overhead", [_kind]));
}
@override
Future<Uint8List> decryptAead(Uint8List body, Nonce nonce,
SharedSecret sharedSecret, Uint8List? associatedData) async {
return base64UrlNoPadDecode(
await _wrapApiPromise(js_util.callMethod(wasm, "crypto_decrypt_aead", [
_kind,
base64UrlNoPadEncode(body),
jsonEncode(nonce),
jsonEncode(sharedSecret),
associatedData != null ? base64UrlNoPadEncode(associatedData) : null
])));
}
@override
Future<Uint8List> encryptAead(Uint8List body, Nonce nonce,
SharedSecret sharedSecret, Uint8List? associatedData) async {
return base64UrlNoPadDecode(
await _wrapApiPromise(js_util.callMethod(wasm, "crypto_encrypt_aead", [
_kind,
base64UrlNoPadEncode(body),
jsonEncode(nonce),
jsonEncode(sharedSecret),
associatedData != null ? base64UrlNoPadEncode(associatedData) : null
])));
}
@override
Future<Uint8List> cryptNoAuth(
Uint8List body, Nonce nonce, SharedSecret sharedSecret) async {
return base64UrlNoPadDecode(await _wrapApiPromise(js_util.callMethod(
wasm, "crypto_crypt_no_auth", [
_kind,
base64UrlNoPadEncode(body),
jsonEncode(nonce),
jsonEncode(sharedSecret)
])));
}
}
class _TDBT {
final int id;
VeilidTableDBJS tdbjs;
VeilidJS js;
_TDBT(this.id, this.tdbjs, this.js);
}
// JS implementation of VeilidTableDBTransaction
class VeilidTableDBTransactionJS extends VeilidTableDBTransaction {
final _TDBT _tdbt;
static final Finalizer<_TDBT> _finalizer = Finalizer((tdbt) => {
js_util.callMethod(wasm, "release_table_db_transaction", [tdbt.id])
});
VeilidTableDBTransactionJS._(this._tdbt) {
_finalizer.attach(this, _tdbt, detach: this);
}
@override
Future<void> commit() {
return _wrapApiPromise(
js_util.callMethod(wasm, "table_db_transaction_commit", [_tdbt.id]));
}
@override
Future<void> rollback() {
return _wrapApiPromise(
js_util.callMethod(wasm, "table_db_transaction_rollback", [_tdbt.id]));
}
@override
Future<void> store(int col, Uint8List key, Uint8List value) {
final encodedKey = base64UrlNoPadEncode(key);
final encodedValue = base64UrlNoPadEncode(value);
return _wrapApiPromise(js_util.callMethod(
wasm,
"table_db_transaction_store",
[_tdbt.id, col, encodedKey, encodedValue]));
}
@override
Future<bool> delete(int col, Uint8List key) {
final encodedKey = base64UrlNoPadEncode(key);
return _wrapApiPromise(js_util.callMethod(
wasm, "table_db_transaction_delete", [_tdbt.id, col, encodedKey]));
}
}
class _TDB {
final int id;
VeilidJS js;
_TDB(this.id, this.js);
}
// JS implementation of VeilidTableDB
class VeilidTableDBJS extends VeilidTableDB {
final _TDB _tdb;
static final Finalizer<_TDB> _finalizer = Finalizer((tdb) => {
js_util.callMethod(wasm, "release_table_db", [tdb.id])
});
VeilidTableDBJS._(this._tdb) {
_finalizer.attach(this, _tdb, detach: this);
}
@override
int getColumnCount() {
return js_util.callMethod(wasm, "table_db_get_column_count", [_tdb.id]);
}
@override
List<Uint8List> getKeys(int col) {
String? s = js_util.callMethod(wasm, "table_db_get_keys", [_tdb.id, col]);
if (s == null) {
throw VeilidAPIExceptionInternal("No db for id");
}
List<dynamic> jarr = jsonDecode(s);
return jarr.map((e) => base64UrlNoPadDecode(e)).toList();
}
@override
VeilidTableDBTransaction transact() {
final id = js_util.callMethod(wasm, "table_db_transact", [_tdb.id]);
return VeilidTableDBTransactionJS._(_TDBT(id, this, _tdb.js));
}
@override
Future<void> store(int col, Uint8List key, Uint8List value) {
final encodedKey = base64UrlNoPadEncode(key);
final encodedValue = base64UrlNoPadEncode(value);
return _wrapApiPromise(js_util.callMethod(
wasm, "table_db_store", [_tdb.id, col, encodedKey, encodedValue]));
}
@override
Future<Uint8List?> load(int col, Uint8List key) async {
final encodedKey = base64UrlNoPadEncode(key);
String? out = await _wrapApiPromise(
js_util.callMethod(wasm, "table_db_load", [_tdb.id, col, encodedKey]));
if (out == null) {
return null;
}
return base64UrlNoPadDecode(out);
}
@override
Future<bool> delete(int col, Uint8List key) {
final encodedKey = base64UrlNoPadEncode(key);
return _wrapApiPromise(js_util
.callMethod(wasm, "table_db_delete", [_tdb.id, col, encodedKey]));
}
}
// JS implementation of high level Veilid API
class VeilidJS implements Veilid {
@override
void initializeVeilidCore(Map<String, dynamic> platformConfigJson) {
var platformConfigJsonString = jsonEncode(platformConfigJson);
js_util
.callMethod(wasm, "initialize_veilid_core", [platformConfigJsonString]);
}
@override
void changeLogLevel(String layer, VeilidConfigLogLevel logLevel) {
var logLevelJsonString = jsonEncode(logLevel);
js_util.callMethod(wasm, "change_log_level", [layer, logLevelJsonString]);
}
@override
Future<Stream<VeilidUpdate>> startupVeilidCore(VeilidConfig config) async {
var streamController = StreamController<VeilidUpdate>();
updateCallback(String update) {
var updateJson = jsonDecode(update);
if (updateJson["kind"] == "Shutdown") {
streamController.close();
} else {
var update = VeilidUpdate.fromJson(updateJson);
streamController.add(update);
}
}
await _wrapApiPromise(js_util.callMethod(wasm, "startup_veilid_core",
[js.allowInterop(updateCallback), jsonEncode(config)]));
return streamController.stream;
}
@override
Future<VeilidState> getVeilidState() async {
return VeilidState.fromJson(jsonDecode(await _wrapApiPromise(
js_util.callMethod(wasm, "get_veilid_state", []))));
}
@override
Future<void> attach() {
return _wrapApiPromise(js_util.callMethod(wasm, "attach", []));
}
@override
Future<void> detach() {
return _wrapApiPromise(js_util.callMethod(wasm, "detach", []));
}
@override
Future<void> shutdownVeilidCore() {
return _wrapApiPromise(
js_util.callMethod(wasm, "shutdown_veilid_core", []));
}
@override
List<CryptoKind> validCryptoKinds() {
return jsonDecode(js_util.callMethod(wasm, "valid_crypto_kinds", []));
}
@override
Future<VeilidCryptoSystem> getCryptoSystem(CryptoKind kind) async {
if (!validCryptoKinds().contains(kind)) {
throw VeilidAPIExceptionGeneric("unsupported cryptosystem");
}
return VeilidCryptoSystemJS._(this, kind);
}
@override
Future<VeilidCryptoSystem> bestCryptoSystem() async {
return VeilidCryptoSystemJS._(
this, js_util.callMethod(wasm, "best_crypto_kind", []));
}
@override
Future<List<TypedKey>> verifySignatures(List<TypedKey> nodeIds,
Uint8List data, List<TypedSignature> signatures) async {
return jsonListConstructor(TypedKey.fromJson)(jsonDecode(
await _wrapApiPromise(js_util.callMethod(wasm, "verify_signatures", [
jsonEncode(nodeIds),
base64UrlNoPadEncode(data),
jsonEncode(signatures)
]))));
}
@override
Future<List<TypedSignature>> generateSignatures(
Uint8List data, List<TypedKeyPair> keyPairs) async {
return jsonListConstructor(TypedSignature.fromJson)(jsonDecode(
await _wrapApiPromise(js_util.callMethod(wasm, "generate_signatures",
[base64UrlNoPadEncode(data), jsonEncode(keyPairs)]))));
}
@override
Future<TypedKeyPair> generateKeyPair(CryptoKind kind) async {
return TypedKeyPair.fromJson(jsonDecode(await _wrapApiPromise(
js_util.callMethod(wasm, "generate_key_pair", [kind]))));
}
@override
Future<VeilidRoutingContext> routingContext() async {
int id =
await _wrapApiPromise(js_util.callMethod(wasm, "routing_context", []));
return VeilidRoutingContextJS._(_Ctx(id, this));
}
@override
Future<RouteBlob> newPrivateRoute() async {
return RouteBlob.fromJson(jsonDecode(await _wrapApiPromise(
js_util.callMethod(wasm, "new_private_route", []))));
}
@override
Future<RouteBlob> newCustomPrivateRoute(
Stability stability, Sequencing sequencing) async {
var stabilityString = jsonEncode(stability);
var sequencingString = jsonEncode(sequencing);
return RouteBlob.fromJson(jsonDecode(await _wrapApiPromise(js_util
.callMethod(
wasm, "new_private_route", [stabilityString, sequencingString]))));
}
@override
Future<String> importRemotePrivateRoute(Uint8List blob) {
var encodedBlob = base64UrlNoPadEncode(blob);
return _wrapApiPromise(
js_util.callMethod(wasm, "import_remote_private_route", [encodedBlob]));
}
@override
Future<void> releasePrivateRoute(String key) {
return _wrapApiPromise(
js_util.callMethod(wasm, "release_private_route", [key]));
}
@override
Future<void> appCallReply(String id, Uint8List message) {
var encodedMessage = base64UrlNoPadEncode(message);
return _wrapApiPromise(
js_util.callMethod(wasm, "app_call_reply", [id, encodedMessage]));
}
@override
Future<VeilidTableDB> openTableDB(String name, int columnCount) async {
int id = await _wrapApiPromise(
js_util.callMethod(wasm, "open_table_db", [name, columnCount]));
return VeilidTableDBJS._(_TDB(id, this));
}
@override
Future<bool> deleteTableDB(String name) {
return _wrapApiPromise(js_util.callMethod(wasm, "delete_table_db", [name]));
}
@override
Timestamp now() {
return Timestamp.fromString(js_util.callMethod(wasm, "now", []));
}
@override
Future<String> debug(String command) async {
return await _wrapApiPromise(js_util.callMethod(wasm, "debug", [command]));
}
@override
String veilidVersionString() {
return js_util.callMethod(wasm, "veilid_version_string", []);
}
@override
VeilidVersion veilidVersion() {
Map<String, dynamic> jsonVersion =
jsonDecode(js_util.callMethod(wasm, "veilid_version", []));
return VeilidVersion(
jsonVersion["major"], jsonVersion["minor"], jsonVersion["patch"]);
}
}