mirror of https://github.com/keeweb/keeweb.git
432 lines
12 KiB
JavaScript
432 lines
12 KiB
JavaScript
import kdbxweb from 'kdbxweb';
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import { Events } from 'framework/events';
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import { Launcher } from 'comp/launcher';
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import { box as tweetnaclBox } from 'tweetnacl';
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import { PasswordGenerator } from 'util/generators/password-generator';
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import { GeneratorPresets } from 'comp/app/generator-presets';
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import { Alerts } from 'comp/ui/alerts';
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import { Locale } from 'util/locale';
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import { RuntimeInfo } from 'const/runtime-info';
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import { KnownAppVersions } from 'const/known-app-versions';
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const KeeWebAssociationId = 'KeeWeb';
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const KeeWebHash = '398d9c782ec76ae9e9877c2321cbda2b31fc6d18ccf0fed5ca4bd746bab4d64a'; // sha256('KeeWeb')
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const Errors = {
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noOpenFiles: {
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message: Locale.extensionErrorNoOpenFiles,
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code: '1'
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},
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userRejected: {
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message: Locale.extensionErrorUserRejected,
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code: '6'
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}
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};
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const connectedClients = new Map();
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let logger;
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let appModel;
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let sendEvent;
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function setupListeners() {
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Events.on('file-opened', () => {
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sendEvent({ action: 'database-unlocked' });
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});
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Events.on('one-file-closed', () => {
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if (!appModel.files.hasOpenFiles()) {
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sendEvent({ action: 'database-locked' });
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}
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});
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Events.on('all-files-closed', () => {
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sendEvent({ action: 'database-locked' });
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});
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}
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function incrementNonce(nonce) {
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// from libsodium/utils.c, like it is in KeePassXC
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let i = 0;
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let c = 1;
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for (; i < nonce.length; ++i) {
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c += nonce[i];
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nonce[i] = c;
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c >>= 8;
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}
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}
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function getClient(request) {
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if (!request.clientID) {
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throw new Error('Empty clientID');
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}
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const client = connectedClients.get(request.clientID);
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if (!client) {
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throw new Error(`Client not connected: ${request.clientID}`);
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}
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return client;
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}
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function decryptRequest(request) {
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const client = getClient(request);
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if (!request.nonce) {
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throw new Error('Empty nonce');
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}
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if (!request.message) {
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throw new Error('Empty message');
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}
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const nonce = kdbxweb.ByteUtils.base64ToBytes(request.nonce);
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const message = kdbxweb.ByteUtils.base64ToBytes(request.message);
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const data = tweetnaclBox.open(message, nonce, client.publicKey, client.keys.secretKey);
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const json = new TextDecoder().decode(data);
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const payload = JSON.parse(json);
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logger.debug('Extension -> KeeWeb -> (decrypted)', payload);
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if (!payload) {
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throw new Error('Empty request payload');
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}
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if (payload.action !== request.action) {
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throw new Error(`Bad action in decrypted payload`);
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}
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return payload;
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}
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function encryptResponse(request, payload) {
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logger.debug('KeeWeb -> Extension (decrypted)', payload);
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const nonceBytes = kdbxweb.ByteUtils.base64ToBytes(request.nonce);
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incrementNonce(nonceBytes);
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const nonce = kdbxweb.ByteUtils.bytesToBase64(nonceBytes);
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const client = getClient(request);
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payload.nonce = nonce;
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const json = JSON.stringify(payload);
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const data = new TextEncoder().encode(json);
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const encrypted = tweetnaclBox(data, nonceBytes, client.publicKey, client.keys.secretKey);
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const message = kdbxweb.ByteUtils.bytesToBase64(encrypted);
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return {
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action: request.action,
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message,
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nonce
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};
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}
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function makeError(def) {
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const e = new Error(def.message);
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e.code = def.code;
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return e;
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}
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function ensureAtLeastOneFileIsOpen() {
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if (!appModel.files.hasOpenFiles()) {
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throw makeError(Errors.noOpenFiles);
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}
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}
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function checkContentRequestPermissions(request) {
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ensureAtLeastOneFileIsOpen();
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const client = getClient(request);
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if (client.authorized) {
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return;
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}
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return new Promise((resolve, reject) => {
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if (Alerts.alertDisplayed) {
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return reject(new Error(Locale.extensionErrorAlertDisplayed));
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}
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focusKeeWeb();
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// TODO: make a proper dialog here instead of a simple question
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if (Launcher) {
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Alerts.yesno({
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header: 'Extension connection',
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body: 'Allow this extension to connect?',
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success: () => {
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resolve();
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},
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cancel: () => reject(makeError(Errors.userRejected))
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});
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} else {
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// it's 'confirm' here because other browser extensions can't interact with browser alerts
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// while they can easily press a button on our alert
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// eslint-disable-next-line no-alert
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const allowed = confirm('Allow this extension to connect?');
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if (allowed) {
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resolve();
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} else {
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reject(makeError(Errors.userRejected));
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}
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}
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})
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.then(() => {
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client.authorized = true;
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Launcher.hideApp();
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})
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.catch((e) => {
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Launcher.hideApp();
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throw e;
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});
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}
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function getVersion(request) {
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const extensionName = getClient(request).connection.extensionName;
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return extensionName ? RuntimeInfo.version : KnownAppVersions.KeePassXC;
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}
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function isKeeWebConnect(request) {
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return getClient(request).connection.extensionName === 'keeweb-connect';
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}
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function focusKeeWeb() {
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logger.debug('Focus KeeWeb');
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if (Launcher) {
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Launcher.showMainWindow();
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} else {
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sendEvent({ action: 'attention-required' });
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}
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}
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const ProtocolHandlers = {
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'ping'({ data }) {
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return { data };
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},
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'change-public-keys'(request, connection) {
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let { publicKey, version, clientID: clientId } = request;
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if (connectedClients.has(clientId)) {
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throw new Error('Changing keys is not allowed');
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}
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if (!Launcher) {
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// on web there can be only one connected client
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connectedClients.clear();
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}
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const keys = tweetnaclBox.keyPair();
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publicKey = kdbxweb.ByteUtils.base64ToBytes(publicKey);
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connectedClients.set(clientId, { connection, publicKey, version, keys });
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logger.info('New client key created', clientId, version);
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const nonceBytes = kdbxweb.ByteUtils.base64ToBytes(request.nonce);
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incrementNonce(nonceBytes);
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const nonce = kdbxweb.ByteUtils.bytesToBase64(nonceBytes);
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return {
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action: 'change-public-keys',
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version: getVersion(request),
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publicKey: kdbxweb.ByteUtils.bytesToBase64(keys.publicKey),
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nonce,
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success: 'true',
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...(isKeeWebConnect(request) ? { appName: 'KeeWeb' } : undefined)
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};
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},
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'get-databasehash'(request) {
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decryptRequest(request);
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ensureAtLeastOneFileIsOpen();
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return encryptResponse(request, {
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hash: KeeWebHash,
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success: 'true',
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version: getVersion(request)
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});
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},
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'generate-password'(request) {
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const password = PasswordGenerator.generate(GeneratorPresets.browserExtensionPreset);
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return encryptResponse(request, {
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version: getVersion(request),
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success: 'true',
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entries: [{ password }]
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});
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},
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'lock-database'(request) {
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decryptRequest(request);
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ensureAtLeastOneFileIsOpen();
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Events.emit('lock-workspace');
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if (Alerts.alertDisplayed) {
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focusKeeWeb();
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}
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return encryptResponse(request, {
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success: 'true',
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version: getVersion(request)
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});
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},
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'associate'(request) {
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decryptRequest(request);
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ensureAtLeastOneFileIsOpen();
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return encryptResponse(request, {
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success: 'true',
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version: getVersion(request),
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hash: KeeWebHash,
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id: KeeWebAssociationId
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});
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},
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'test-associate'(request) {
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const payload = decryptRequest(request);
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ensureAtLeastOneFileIsOpen();
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if (payload.id !== KeeWebAssociationId) {
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throw makeError(Errors.noOpenFiles);
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}
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return encryptResponse(request, {
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success: 'true',
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version: getVersion(request),
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hash: KeeWebHash,
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id: payload.id
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});
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},
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async 'get-logins'(request) {
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decryptRequest(request);
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await checkContentRequestPermissions(request);
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throw new Error('Not implemented');
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},
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async 'get-totp'(request) {
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decryptRequest(request);
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await checkContentRequestPermissions(request);
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throw new Error('Not implemented');
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},
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async 'set-login'(request) {
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decryptRequest(request);
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await checkContentRequestPermissions(request);
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throw new Error('Not implemented');
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},
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async 'get-database-groups'(request) {
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decryptRequest(request);
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await checkContentRequestPermissions(request);
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const makeGroups = (group) => {
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const res = {
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name: group.title,
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uuid: kdbxweb.ByteUtils.bytesToHex(group.group.uuid.bytes),
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children: []
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};
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for (const subGroup of group.items) {
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if (subGroup.matches()) {
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res.children.push(makeGroups(subGroup));
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}
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}
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return res;
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};
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const groups = [];
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for (const file of appModel.files.filter((f) => f.active)) {
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for (const group of file.groups) {
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groups.push(makeGroups(group));
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}
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}
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return encryptResponse(request, {
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success: 'true',
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version: getVersion(request),
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groups: { groups }
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});
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},
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async 'create-new-group'(request) {
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const payload = decryptRequest(request);
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await checkContentRequestPermissions(request);
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if (!payload.groupName) {
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throw new Error('No groupName');
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}
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// TODO: show file selector
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// throw makeError(Errors.userRejected);
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const groupNames = payload.groupName
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.split('/')
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.map((g) => g.trim())
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.filter((g) => g);
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if (!groupNames.length) {
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throw new Error('Empty group path');
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}
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// TODO: create a new group
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throw new Error('Not implemented');
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// return encryptResponse(request, {
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// success: 'true',
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// version: getVersion(request),
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// name: groupNames[groupNames.length - 1],
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// uuid: kdbxweb.ByteUtils.bytesToHex(appModel.files[0].groups[0].group.uuid.bytes)
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// });
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}
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};
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const ProtocolImpl = {
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init(vars) {
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appModel = vars.appModel;
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logger = vars.logger;
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sendEvent = vars.sendEvent;
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setupListeners();
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},
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cleanup() {
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connectedClients.clear();
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},
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deleteConnection(connectionId) {
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for (const client of connectedClients.values()) {
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if (client.connection.connectionId === connectionId) {
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connectedClients.delete(client);
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}
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}
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},
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errorToResponse(e, request) {
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return {
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action: request?.action,
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error: e.message || 'Unknown error',
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errorCode: e.code || 0
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};
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},
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async handleRequest(request, connectionInfo) {
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try {
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const handler = ProtocolHandlers[request.action];
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if (!handler) {
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throw new Error(`Handler not found: ${request.action}`);
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}
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return await handler(request, connectionInfo);
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} catch (e) {
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return this.errorToResponse(e, request);
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}
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}
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};
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export { ProtocolImpl };
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