From 8407f2ff695e8956e4e8ded7b50ec26de814411f Mon Sep 17 00:00:00 2001
From: Alex Hart <alex@signal.org>
Date: Tue, 17 May 2022 09:28:17 -0300
Subject: [PATCH] Add guard against out of bounds indices in story viewer.

---
 .../securesms/stories/viewer/StoryViewerViewModel.kt          | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/src/main/java/org/thoughtcrime/securesms/stories/viewer/StoryViewerViewModel.kt b/app/src/main/java/org/thoughtcrime/securesms/stories/viewer/StoryViewerViewModel.kt
index 268f61fbc5..8d06fc7112 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/stories/viewer/StoryViewerViewModel.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/stories/viewer/StoryViewerViewModel.kt
@@ -108,7 +108,7 @@ class StoryViewerViewModel(
 
   fun onGoToNext(recipientId: RecipientId) {
     store.update {
-      if (it.pages[it.page] == recipientId) {
+      if (it.page in it.pages.indices && it.pages[it.page] == recipientId) {
         updatePages(it, it.page + 1)
       } else {
         it
@@ -118,7 +118,7 @@ class StoryViewerViewModel(
 
   fun onGoToPrevious(recipientId: RecipientId) {
     store.update {
-      if (it.pages[it.page] == recipientId) {
+      if (it.page in it.pages.indices && it.pages[it.page] == recipientId) {
         updatePages(it, max(0, it.page - 1))
       } else {
         it