feat: Certificate viewer

Show certificates with an interface modeled after firefox's certificate
viewer so that they can be inspected before trusting.

The current implementation assumes that each certificate has a unique
fingerprint (collisions are astronomically unlikely).

Signed-off-by: Kristóf Marussy <kristof@marussy.com>

1 files changed, 14 insertions, 1 deletions

diff --git a/packages/main/src/infrastructure/electron/impl/electronShell.ts b/packages/main/src/infrastructure/electron/impl/electronShell.ts
index be1cbe3..f7f7001 100644
--- a/packages/main/src/infrastructure/electron/impl/electronShell.ts
+++ b/packages/main/src/infrastructure/electron/impl/electronShell.ts
@@ -18,7 +18,9 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { app, shell } from 'electron';
+import { writeFile } from 'node:fs/promises';
+
+import { app, dialog, shell } from 'electron';
 import { getLogger } from 'loglevel';
 
 import type MainEnv from '../../../stores/MainEnv';
@@ -34,6 +36,17 @@ const electronShell: MainEnv = {
   openAboutDialog(): void {
     app.showAboutPanel();
   },
+  async saveTextFile(filename: string, value: string): Promise<void> {
+    const result = await dialog.showSaveDialog({
+      defaultPath: filename,
+    });
+    if (result.canceled || result.filePath === undefined) {
+      log.debug('Saving file', filename, 'canceled');
+      return;
+    }
+    await writeFile(result.filePath, value, 'utf8');
+    log.debug('Saved file', filename, 'to', result.filePath);
+  },
 };
 
 export default electronShell;