X11, Wayland: only give access to the current display, not all of them

[bubblebox.git] / profiles.py

diff --git a/profiles.py b/profiles.py
index 70e8b81abf66b1117d0e3cff3dce68b9baf1f08b..18c3116517f828a71b8e2d8ecf0d477bcb775d9b 100644 (file)
--- a/profiles.py
+++ b/profiles.py
@@ -9,6 +9,11 @@ DEFAULT = group(
   # However, some applications will not like this unless the hostname also exists in `/etc/hosts`!
   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.
+  # Possible code to use for that: <https://gist.github.com/sloonz/4b7f5f575a96b6fe338534dbc2480a5d#file-sandbox-py-L129>
+  # There is also a good list of possible-syscalls-to-block at
+  # <https://github.com/flatpak/flatpak/blob/f16e064fd9454fb8f754b769ad1ffce0e42b51db/common/flatpak-run.c#L1791>.
   bwrap_flags("--new-session"),
   # basic directories
   bwrap_flags("--proc", "/proc", "--dev", "/dev", "--dir", "/tmp", "--dir", "/var", "--dir", "/run", "--symlink", "../run", "/var/run"),
@@ -37,10 +42,12 @@ def DESKTOP(name):
       "dev": {
         ("dri", "snd"): Access.Device,
       },
-      "/tmp/.X11-unix/": Access.Read,
+      "/tmp/.X11-unix/": {
+        "X"+os.environ["DISPLAY"].removeprefix(":"): Access.Read,
+      },
       os.environ["XAUTHORITY"]: Access.Read,
       XDG_RUNTIME_DIR: {
-        ("wayland*", "pulse"): Access.Read,
+        (os.environ["WAYLAND_DISPLAY"], "pulse"): Access.Read,
       },
     }),
     # Access to some key user configuration