From: Ralf Jung <post@ralfj.de>
Date: Fri, 9 Aug 2024 09:22:55 +0000 (+0200)
Subject: don't change hostname, it doesn't work well for GUI apps under Gnome
X-Git-Url: https://git.ralfj.de/bubblebox.git/commitdiff_plain/HEAD?hp=27fecd30b8dc7969e9cd10d9f09b62b5eda374c9

don't change hostname, it doesn't work well for GUI apps under Gnome
---

diff --git a/README.md b/README.md
index cee1e66..32aa2ec 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ This is the documentation of [BubbleBox](https://www.ralfj.de/projects/bubblebox
 tool to easily sandbox Linux applications.
 
 The primary use-case for BubbleBox is running applications that you do not trust enough
-to give them full access to hour home directory, and in particular the secret keys stored there.
+to give them full access to your home directory, and in particular the secret keys stored there.
 BubbleBox is based on [bubblewrap] and [xdg-dbus-proxy] which do all of the heavy lifting.
 
 The goals of this project are similar to [firejail], but I found firejail's configuration to be extremely hard to maintain and debug.
diff --git a/profiles.py b/profiles.py
index 3d395c5..d2d7841 100644
--- a/profiles.py
+++ b/profiles.py
@@ -7,7 +7,8 @@ DEFAULT = group(
   bwrap_flags("--unshare-user", "--unshare-pid", "--unshare-cgroup"),
   # A different hostname is useful to be able to see when we are inside the sandbox.
   # However, some applications will not like this unless the hostname also exists in `/etc/hosts`!
-  bwrap_flags("--unshare-uts", "--hostname", "bubblebox"),
+  # Also, gnome-shell doesn't display window icons properly when this is set.
+  #bwrap_flags("--unshare-uts", "--hostname", "bubblebox"),
   # Make sure the sandbox cannot inject commands into the host terminal.
   # TODO: This flag breaks some CLI applications, like job control in shells.
   # Consider using SECCOMP instead.
@@ -56,10 +57,13 @@ def DESKTOP(name):
       },
     }),
     X11(),
-    # Access to some key user configuration
+    # Access to some key user configuration.
+    # We set GSETTINGS_BACKEND to make GTK3 apps use the config file in ~/.config/glib-2.0.
+    # (The "right" solution here is probably the settings portal...)
     home_access({
-      (".config/fontconfig", ".XCompose", ".local/share/applications"): Access.Read,
+      (".config/fontconfig", ".config/glib-2.0", ".XCompose", ".local/share/applications"): Access.Read,
     }),
+    bwrap_flags("--setenv", "GSETTINGS_BACKEND", "keyfile"),
     # Access to basic d-bus services (that are hopefully safe to expose...)
     dbus_proxy_flags(
       "--call=org.kde.StatusNotifierWatcher=@/StatusNotifierWatcher",