parse folder /etc/X11/Xsession.d

https://forums.whonix.org/t/system-wide-sandboxing-framework-sandbox-app-launcher/9008/210

usr/bin/sandbox-app-launcher

@@ -144,19 +144,53 @@ setup() {
     wrapper_dir="${wrapper_dir_wx}"
   fi
 
-  ## Create wrappers.
-  if ! [ -e "${wrapper_dir}/${app_name}" ]; then
-    cat <<EOF > "${wrapper_dir}/${app_name}"
-#!/bin/bash
+  ## Create wrapper.
 
-if [ -x /etc/X11/Xsession.d/20torbrowser ]; then
-  source /etc/X11/Xsession.d/20torbrowser
-fi
+  rm --force "${wrapper_dir}/${app_name}"
+  touch "${wrapper_dir}/${app_name}"
+
+  ## dbus-launch is run by /etc/X11/Xsession.d/75dbus_dbus-launch
+
+  cat >> "${wrapper_dir}/${app_name}" << 'EOF'
+#!/bin/sh
 
-dbus-launch
-"${app_path}" "\${@}" 1>/dev/null
+## Using sh because /etc/X11/Xsession is written in sh.
+
+## Debugging.
+set -x
+
+export sandbox_app_launcher_wrapper_script=true
 EOF
-    chmod 755 "${wrapper_dir}/${app_name}"
+
+  ## /etc/X11/Xsession.d/99x11-common_start
+  ## Does not work.
+  ## + . /etc/X11/Xsession.d/99x11-common_start
+  ## + exec /home/sandbox-app-launcher-appdata/torbrowser/.tb/tor-browser/Browser/start-tor-browser
+  ## with exit code 139
+  #echo "STARTUP=\"${app_path}\" \"\${@}\"" | tee --append "${wrapper_dir}/${app_name}" 1>/dev/null
+
+  ## Copied from /etc/X11/Xsession and adjusted.
+  cat >> "${wrapper_dir}/${app_name}" << 'EOF'
+SYSSESSIONDIR=/etc/X11/Xsession.d
+SESSIONFILES=$(run-parts --list $SYSSESSIONDIR)
+if [ -n "$SESSIONFILES" ]; then
+  set +e
+  for SESSIONFILE in $SESSIONFILES; do
+    if [ "$SESSIONFILE" = "/etc/X11/Xsession.d/99x11-common_start" ]; then
+       continue
+    fi
+    . $SESSIONFILE
+  done
+  set -e
+fi
+EOF
+
+  echo "\"${app_path}\" \"\${@}\"" | tee --append "${wrapper_dir}/${app_name}" 1>/dev/null
+
+  chmod 755 "${wrapper_dir}/${app_name}"
+
+  if [ -o xtrace ]; then
+    cat "${wrapper_dir}/${app_name}"
   fi
 }