From ce047efa923f98791c9b36345c199d2f6bc9dc16 Mon Sep 17 00:00:00 2001
From: Oskar Nyberg <oskar@mullvad.net>
Date: Tue, 29 Aug 2023 18:30:50 +0200
Subject: [PATCH] Clear GPU cache on upgrade on Linux

---
 dist-assets/linux/after-remove.sh | 62 +++++++++++++++++++++----------
 1 file changed, 42 insertions(+), 20 deletions(-)

diff --git a/dist-assets/linux/after-remove.sh b/dist-assets/linux/after-remove.sh
index 8dfe875a46da..2b3a93e5f26b 100644
--- a/dist-assets/linux/after-remove.sh
+++ b/dist-assets/linux/after-remove.sh
@@ -8,32 +8,50 @@ function remove_logs_and_cache {
     echo "Failed to remove mullvad-vpn cache"
 }
 
+function get_home_dirs {
+  if [[ -f "/etc/passwd" ]] && command -v cut > /dev/null; then
+      cut -d: -f6 /etc/passwd
+  fi
+}
+
+function clear_gpu_cache {
+  local home_dirs
+  home_dirs=$(get_home_dirs)
+
+  for home_dir in $home_dirs; do
+      local gpu_cache_dir="$home_dir/.config/Mullvad VPN/GPUCache"
+      if [[ -d "$gpu_cache_dir" ]]; then
+          echo "Clearing GPU cache in $gpu_cache_dir"
+          rm -r --interactive=never "$gpu_cache_dir" || \
+              echo "Failed to clear GPU cache"
+      fi
+  done
+}
+
 function remove_config {
   rm -r --interactive=never /etc/mullvad-vpn || \
     echo "Failed to remove mullvad-vpn config"
 
   # Remove app settings and auto-launcher for all users. This doesn't respect XDG_CONFIG_HOME due
   # to the complexity required.
-  if [[ -f "/etc/passwd" ]] && command -v cut > /dev/null; then
-      local home_dirs
-      home_dirs=$(cut -d: -f6 /etc/passwd)
-      for home_dir in $home_dirs; do
-          local mullvad_dir="$home_dir/.config/Mullvad VPN"
-          if [[ -d "$mullvad_dir" ]]; then
-              echo "Removing mullvad-vpn app settings from $mullvad_dir"
-              rm -r --interactive=never "$mullvad_dir" || \
-                  echo "Failed to remove mullvad-vpn app settings"
-          fi
-
-          local autostart_path="$home_dir/.config/autostart/mullvad-vpn.desktop"
-          # mullvad-vpn.desktop can be both a file or a symlink.
-          if [[ -f "$autostart_path" || -L "$autostart_path" ]]; then
-              echo "Removing mullvad-vpn app autostart file $autostart_path"
-              rm --interactive=never "$autostart_path" || \
-                  echo "Failed to remove mullvad-vpn autostart file"
-          fi
-      done
-  fi
+  local home_dirs
+  home_dirs=$(get_home_dirs)
+  for home_dir in $home_dirs; do
+      local mullvad_dir="$home_dir/.config/Mullvad VPN"
+      if [[ -d "$mullvad_dir" ]]; then
+          echo "Removing mullvad-vpn app settings from $mullvad_dir"
+          rm -r --interactive=never "$mullvad_dir" || \
+              echo "Failed to remove mullvad-vpn app settings"
+      fi
+
+      local autostart_path="$home_dir/.config/autostart/mullvad-vpn.desktop"
+      # mullvad-vpn.desktop can be both a file or a symlink.
+      if [[ -f "$autostart_path" || -L "$autostart_path" ]]; then
+          echo "Removing mullvad-vpn app autostart file $autostart_path"
+          rm --interactive=never "$autostart_path" || \
+              echo "Failed to remove mullvad-vpn autostart file"
+      fi
+  done
 }
 
 # checking what kind of an action is taking place
@@ -52,3 +70,7 @@ case $@ in
     remove_config
     ;;
 esac
+
+# Different electron versions can have incompatible GPU caches. Clearing it on upgrades makes sure
+# the same cache is not used across versions.
+clear_gpu_cache