From c2930509fc8a4ad0402050a9540e957484c405a6 Mon Sep 17 00:00:00 2001
From: pitchum <pitchum@users.noreply.chapril.org>
Date: Sat, 16 May 2020 15:12:45 +0200
Subject: [PATCH] Add an admin script to check if mumble's WebUI is currently
 in use.

---
 active_web_users | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100755 active_web_users

diff --git a/active_web_users b/active_web_users
new file mode 100755
index 0000000..2da9567
--- /dev/null
+++ b/active_web_users
@@ -0,0 +1,31 @@
+#! /bin/bash
+
+# Parse mumble logs in order to determine if someone is currently accessing
+# mumble through the WebUI. If not it means we can safely restart nginx
+# on the reverse-proxy side without bothering anyone :)
+
+MUMBLE_LOG=/var/log/mumble-server/mumble-server.log
+
+
+main() {
+    candidates=$(last_connections)
+    for candidate in ${candidates}; do
+        grep "<${candidate}:" "${MUMBLE_LOG}" | tail -n 1 | grep -q 'Connection closed'
+        if [ $? -ne 0 ]; then
+            echo "At least one person is currently using mumble's Web interface."
+            grep "<${candidate}:" "${MUMBLE_LOG}" | tail -n 5
+            exit 1
+        fi
+    done
+    echo "It looks like nobody is currently using mumble's Web interface. You may restart nginx if you want ;)"
+    exit 0
+}
+
+last_connections() {
+    grep 'Client.*Node.js' "${MUMBLE_LOG}" \
+        | tail -n 10 \
+        | sed -r 's/^.*=> <([0-9]+):\(-1\)>.*$/\1/' \
+        | tac
+}
+
+main