From: Chris Koeritz <cak0l@virginia.edu>
Date: Thu, 30 Apr 2020 19:36:17 +0000 (-0400)
Subject: approach for sudo to have X windows working
X-Git-Tag: 2.140.117^2~8
X-Git-Url: https://feistymeow.org/gitweb/?p=feisty_meow.git;a=commitdiff_plain;h=12d3b0a9a2dae8d187318c52465fd262c74b0c85

approach for sudo to have X windows working

this should enable root or other users to start X windows on the user's display, assuming that the DISPLAY variable is passed in and that the new xauth imported info is also available.
---

diff --git a/scripts/core/functions.sh b/scripts/core/functions.sh
index 19e4306c..865aa251 100644
--- a/scripts/core/functions.sh
+++ b/scripts/core/functions.sh
@@ -451,6 +451,9 @@ if [ -z "$skip_all" ]; then
   # label if they're doing an su with the sudo.
   function sudo() {
     save_terminal_title
+    # hoist our X authorization info in case environment is passed along;
+    # this can allow root to use our display to show Xorg windows.
+    export IMPORTED_XAUTH="$(xauth list $DISPLAY)"
     /usr/bin/sudo "$@"
     retval=$?
     restore_terminal_title
diff --git a/scripts/core/launch_feisty_meow.sh b/scripts/core/launch_feisty_meow.sh
index 0d7d54be..4a6184e6 100644
--- a/scripts/core/launch_feisty_meow.sh
+++ b/scripts/core/launch_feisty_meow.sh
@@ -92,6 +92,13 @@ if [ "$NO_REPAIRS_NEEDED" == "true" ]; then
   if [ -z "$USER" -a ! -z "$CRONUSER" ]; then
     export USER="$CRONUSER"
   fi
+
+  # use the xauth info if we were given one in the environment.
+  # this allows root or other su'd identities to create windows with same
+  # display variable.
+  if [ ! -z "$DISPLAY" -a ! -z "$IMPORTED_XAUTH" ]; then
+    xauth add "$IMPORTED_XAUTH"
+  fi
   
   ##############