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‎examples/electron/SECURITY.md

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# Electron Security Notes
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## Content Security Policy (CSP) Warning
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During development, you'll see a warning about Content Security Policy:
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```
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Electron Security Warning (Insecure Content-Security-Policy)
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```
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This is **expected and normal** during development because:
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1. **Development Mode**: Vite and other dev tools require `'unsafe-eval'` for hot module replacement (HMR) and dev features
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2. **The warning only appears in development**: It won't show in packaged production apps
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3. **Production builds have strict CSP**: The app applies a strict CSP policy in production mode
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## Security Features Implemented
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✅ **Context Isolation**: Enabled to isolate renderer process from Node.js
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✅ **Node Integration**: Disabled in renderer for security
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✅ **Web Security**: Enabled to enforce same-origin policy
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✅ **Secure IPC**: All API calls go through a secure preload bridge
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✅ **Domain Whitelisting**: Only allowed domains can be accessed
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✅ **Encrypted Storage**: Credentials stored with encryption
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## Production CSP Policy
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In production, the app enforces:
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- No `unsafe-eval` in scripts
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- Only self-hosted scripts allowed
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- API connections limited to Datalayer domains
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- No inline scripts (except styles with `unsafe-inline` for UI libraries)
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## Development vs Production
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| Feature | Development | Production |
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|---------|------------|------------|
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| CSP Warning | Shows | Hidden |
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| unsafe-eval | Allowed (for HMR) | Blocked |
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| DevTools | Open | Closed |
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| Debug Logs | Enabled | Disabled |
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The security warning is a helpful reminder but doesn't indicate a problem during development.

‎examples/electron/src/main/index.ts

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@@ -1,4 +1,4 @@
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import { app, BrowserWindow, Menu, ipcMain, shell } from 'electron';
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import { app, BrowserWindow, Menu, ipcMain, shell, session } from 'electron';
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import { join } from 'path';
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import { apiService } from './services/api-service';
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@@ -23,6 +23,28 @@ function createWindow() {
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mainWindow?.show();
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});
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// Set Content Security Policy
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// In development, we need 'unsafe-eval' for hot reload, but in production it should be removed
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const isDev = process.env.ELECTRON_RENDERER_URL ? true : false;
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if (!isDev) {
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// Production CSP - stricter
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session.defaultSession.webRequest.onHeadersReceived((details, callback) => {
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callback({
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responseHeaders: {
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...details.responseHeaders,
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'Content-Security-Policy': [
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"default-src 'self'; " +
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"script-src 'self'; " +
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"style-src 'self' 'unsafe-inline'; " +
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"img-src 'self' data: https:; " +
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"connect-src 'self' https://prod1.datalayer.run https://*.datalayer.io; " +
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"font-src 'self' data:;"
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]
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}
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});
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});
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}
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2648
// Load the app
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if (process.env.ELECTRON_RENDERER_URL) {
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// Development mode
@@ -243,6 +265,10 @@ ipcMain.handle('datalayer:request', async (_, { endpoint, options }) => {
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return apiService.makeRequest(endpoint, options);
244266
});
245267

268+
ipcMain.handle('datalayer:list-notebooks', async () => {
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return apiService.listNotebooks();
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});
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// App event handlers
247273
app.whenReady().then(() => {
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createWindow();

‎examples/electron/src/main/services/api-service.ts

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Original file line numberDiff line numberDiff line change
@@ -1,5 +1,4 @@
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import { net } from 'electron';
2-
import Store from 'electron-store';
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interface SecureStore {
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credentials?: {
@@ -8,11 +7,20 @@ interface SecureStore {
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};
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}
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11-
// Secure encrypted storage for credentials
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const store = new Store<SecureStore>({
13-
name: 'datalayer-secure',
14-
encryptionKey: 'datalayer-electron-app', // In production, use a more secure key
15-
});
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// Store instance will be initialized lazily
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let store: any = null;
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// Initialize store asynchronously
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async function getStore() {
15+
if (!store) {
16+
const { default: Store } = await import('electron-store');
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store = new Store<SecureStore>({
18+
name: 'datalayer-secure',
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encryptionKey: 'datalayer-electron-app', // In production, use a more secure key
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});
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}
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return store;
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}
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1725
// Whitelist of allowed domains for API requests
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const ALLOWED_DOMAINS = [
@@ -25,8 +33,13 @@ class DatalayerAPIService {
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private token: string = '';
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constructor() {
28-
// Load stored credentials on startup
29-
const stored = store.get('credentials');
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// Load stored credentials on startup (async)
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this.loadCredentials();
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}
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40+
private async loadCredentials() {
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const storeInstance = await getStore();
42+
const stored = storeInstance.get('credentials');
3043
if (stored) {
3144
this.baseUrl = stored.runUrl;
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this.token = stored.token;
@@ -69,7 +82,8 @@ class DatalayerAPIService {
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this.baseUrl = runUrl;
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this.token = token;
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72-
store.set('credentials', { runUrl, token });
85+
const storeInstance = await getStore();
86+
storeInstance.set('credentials', { runUrl, token });
7387

7488
// Test the credentials by fetching environments
7589
const testResponse = await this.getEnvironments();
@@ -90,7 +104,8 @@ class DatalayerAPIService {
90104
async logout(): Promise<{ success: boolean }> {
91105
this.token = '';
92106
this.baseUrl = 'https://prod1.datalayer.run';
93-
store.delete('credentials');
107+
const storeInstance = await getStore();
108+
storeInstance.delete('credentials');
94109
return { success: true };
95110
}
96111

@@ -242,6 +257,211 @@ class DatalayerAPIService {
242257
}
243258
}
244259

260+
/**
261+
* Get user spaces
262+
*/
263+
async getUserSpaces(): Promise<{
264+
success: boolean;
265+
data?: any[];
266+
error?: string;
267+
}> {
268+
try {
269+
const response = await this.request('/api/spacer/v1/spaces/users/me');
270+
return { success: true, data: response.spaces || [] };
271+
} catch (error) {
272+
console.error('Failed to fetch user spaces:', error);
273+
return {
274+
success: false,
275+
error:
276+
error instanceof Error ? error.message : 'Failed to fetch spaces',
277+
};
278+
}
279+
}
280+
281+
/**
282+
* Get all items in a space
283+
*/
284+
async getSpaceItems(spaceId: string): Promise<{
285+
success: boolean;
286+
data?: any[];
287+
error?: string;
288+
}> {
289+
try {
290+
const response = await this.request(
291+
`/api/spacer/v1/spaces/${spaceId}/items`
292+
);
293+
// The response has items directly or nested in the response
294+
return { success: true, data: response.items || response || [] };
295+
} catch (error) {
296+
console.error('Failed to fetch space items:', error);
297+
return {
298+
success: false,
299+
error:
300+
error instanceof Error ? error.message : 'Failed to fetch items',
301+
};
302+
}
303+
}
304+
305+
/**
306+
* List notebooks in a space
307+
*/
308+
async listNotebooks(spaceId?: string): Promise<{
309+
success: boolean;
310+
data?: any[];
311+
spaceInfo?: any;
312+
error?: string;
313+
}> {
314+
try {
315+
console.log('listNotebooks: Starting notebook fetch...');
316+
console.log('listNotebooks: Current token:', this.token ? 'Set' : 'Not set');
317+
console.log('listNotebooks: Current baseUrl:', this.baseUrl);
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319+
// Check if we're authenticated
320+
if (!this.token) {
321+
console.log('listNotebooks: No token available, returning mock data');
322+
// Return mock data for demo
323+
return {
324+
success: true,
325+
data: [
326+
{
327+
uid: 'mock-1',
328+
name_t: 'Sample Data Analysis.ipynb',
329+
creation_ts_dt: new Date(Date.now() - 86400000).toISOString(),
330+
last_update_ts_dt: new Date().toISOString(),
331+
type: 'notebook',
332+
},
333+
{
334+
uid: 'mock-2',
335+
name_t: 'Machine Learning Tutorial.ipynb',
336+
creation_ts_dt: new Date(Date.now() - 172800000).toISOString(),
337+
last_update_ts_dt: new Date(Date.now() - 3600000).toISOString(),
338+
type: 'notebook',
339+
},
340+
{
341+
uid: 'mock-3',
342+
name_t: 'Data Visualization.ipynb',
343+
creation_ts_dt: new Date(Date.now() - 259200000).toISOString(),
344+
last_update_ts_dt: new Date(Date.now() - 7200000).toISOString(),
345+
type: 'notebook',
346+
},
347+
],
348+
error: 'Using mock data - not authenticated'
349+
};
350+
}
351+
352+
// First get user spaces if no spaceId provided
353+
let selectedSpace: any;
354+
355+
if (!spaceId) {
356+
console.log('listNotebooks: No spaceId provided, fetching user spaces...');
357+
const spacesResponse = await this.getUserSpaces();
358+
console.log('listNotebooks: Spaces response:', JSON.stringify(spacesResponse, null, 2));
359+
360+
if (spacesResponse.success && spacesResponse.data && spacesResponse.data.length > 0) {
361+
// Find default space or one called "library"
362+
selectedSpace = spacesResponse.data.find(
363+
(space: any) =>
364+
space.handle === 'library' ||
365+
space.name === 'Library' ||
366+
space.is_default === true
367+
) || spacesResponse.data[0];
368+
369+
console.log('listNotebooks: Selected space:', selectedSpace);
370+
371+
if (selectedSpace) {
372+
spaceId = selectedSpace.id || selectedSpace.uid;
373+
}
374+
} else {
375+
console.log('listNotebooks: No spaces found, using mock data');
376+
// Return mock data if no spaces
377+
return {
378+
success: true,
379+
data: [
380+
{
381+
uid: 'mock-1',
382+
name_t: 'Welcome to Datalayer.ipynb',
383+
creation_ts_dt: new Date().toISOString(),
384+
last_update_ts_dt: new Date().toISOString(),
385+
type: 'notebook',
386+
},
387+
],
388+
error: spacesResponse.error || 'No spaces available'
389+
};
390+
}
391+
}
392+
393+
if (!spaceId) {
394+
console.log('listNotebooks: No space available, returning mock data');
395+
return {
396+
success: true,
397+
data: [
398+
{
399+
uid: 'mock-1',
400+
name_t: 'Getting Started.ipynb',
401+
creation_ts_dt: new Date().toISOString(),
402+
last_update_ts_dt: new Date().toISOString(),
403+
type: 'notebook',
404+
},
405+
],
406+
error: 'No spaces available'
407+
};
408+
}
409+
410+
console.log(`listNotebooks: Fetching items from space ${spaceId}...`);
411+
412+
// Fetch all items from the space
413+
const itemsResponse = await this.getSpaceItems(spaceId);
414+
console.log('listNotebooks: Items response:', JSON.stringify(itemsResponse, null, 2));
415+
416+
if (itemsResponse.success && itemsResponse.data && itemsResponse.data.length > 0) {
417+
// Filter only notebook items - the field is type_s in the actual response
418+
const notebooks = itemsResponse.data.filter(
419+
(item: any) => item.type === 'notebook' || item.type_s === 'notebook' || item.item_type === 'notebook'
420+
);
421+
422+
console.log(`listNotebooks: Found ${notebooks.length} notebooks out of ${itemsResponse.data.length} items`);
423+
424+
if (notebooks.length > 0) {
425+
return {
426+
success: true,
427+
data: notebooks,
428+
spaceInfo: selectedSpace
429+
};
430+
}
431+
}
432+
433+
// Fallback to specific notebook endpoint
434+
console.log('listNotebooks: Trying fallback notebook endpoint...');
435+
const response = await this.request(
436+
`/api/spacer/v1/spaces/${spaceId}/items/types/notebook`
437+
);
438+
439+
console.log('listNotebooks: Fallback response:', JSON.stringify(response, null, 2));
440+
441+
return {
442+
success: true,
443+
data: response.items || response || [],
444+
spaceInfo: selectedSpace
445+
};
446+
} catch (error) {
447+
console.error('listNotebooks: Error fetching notebooks:', error);
448+
// Return mock data on error
449+
return {
450+
success: true,
451+
data: [
452+
{
453+
uid: 'error-mock-1',
454+
name_t: 'Example Notebook.ipynb',
455+
creation_ts_dt: new Date().toISOString(),
456+
last_update_ts_dt: new Date().toISOString(),
457+
type: 'notebook',
458+
},
459+
],
460+
error: error instanceof Error ? error.message : 'Failed to fetch notebooks',
461+
};
462+
}
463+
}
464+
245465
/**
246466
* Generic API request handler for other endpoints
247467
*/

‎examples/electron/src/preload/index.ts

Lines changed: 8 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -47,6 +47,9 @@ contextBridge.exposeInMainWorld('datalayerAPI', {
4747
endpoint: string,
4848
options?: { method?: string; body?: any; headers?: Record<string, string> }
4949
) => ipcRenderer.invoke('datalayer:request', { endpoint, options }),
50+
51+
// Notebooks
52+
listNotebooks: () => ipcRenderer.invoke('datalayer:list-notebooks'),
5053
});
5154

5255
// Type definitions for TypeScript
@@ -87,6 +90,11 @@ export interface DatalayerAPI {
8790
endpoint: string,
8891
options?: { method?: string; body?: any; headers?: Record<string, string> }
8992
) => Promise<{ success: boolean; data?: any; error?: string }>;
93+
listNotebooks: () => Promise<{
94+
success: boolean;
95+
data?: any[];
96+
error?: string;
97+
}>;
9098
}
9199

92100
declare global {

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