From 0956baecf958bc6db35a26b3af74da8eb4ed8214 Mon Sep 17 00:00:00 2001
From: Benoit Marty <benoitm@matrix.org>
Date: Wed, 9 Dec 2020 12:27:37 +0100
Subject: [PATCH] Delete unencrypted files each time the app is started

---
 .../im/vector/app/features/home/HomeActivityViewModel.kt    | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/vector/src/main/java/im/vector/app/features/home/HomeActivityViewModel.kt b/vector/src/main/java/im/vector/app/features/home/HomeActivityViewModel.kt
index 680ec17415..90d128320b 100644
--- a/vector/src/main/java/im/vector/app/features/home/HomeActivityViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/home/HomeActivityViewModel.kt
@@ -71,12 +71,18 @@ class HomeActivityViewModel @AssistedInject constructor(
     private var onceTrusted = false
 
     init {
+        cleanupFiles()
         observeInitialSync()
         mayBeInitializeCrossSigning()
         checkSessionPushIsOn()
         observeCrossSigningReset()
     }
 
+    private fun cleanupFiles() {
+        // Mitigation: delete all cached decrypted files each time the application is started.
+        activeSessionHolder.getSafeActiveSession()?.fileService()?.clearDecryptedCache()
+    }
+
     private fun observeCrossSigningReset() {
         val safeActiveSession = activeSessionHolder.getSafeActiveSession() ?: return