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--- linux:notifications [2020/07/17 20:22] – created Wulf Rajek
+++ linux:notifications [2023/05/29 11:55] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
-====== Notifications ======
+====== VNC Notifications ======
 VNC notifications example:
@@ Line 21: / Line 21: @@
 <code>
 ./notify-send.sh --expire-time=-1 --icon=/usr/share/icons/Humanity/apps/24/application-x-vnc.svg Subject Message
+</code>
+Alternative bash script inspired by notify-send:
+<code>
+#!/bin/bash
+NOTIFY_ARGS=(--session
+             --dest org.freedesktop.Notifications
+             --object-path /org/freedesktop/Notifications)
+APP_NAME="${0##*/}"
+REPLACE_ID=0
+EXPIRE_TIME=4000
+ICON="/usr/share/icons/Humanity/apps/48/application-x-vnc.svg"
+parse_notification_id(){
+    sed 's/(uint32 \([0-9]\+\),)/\1/g'
+}
+HOSTNAME_TO_IGNORE_REGEX="\.example\.com"
+#VNC loop
+while true
+do
+  LOGGEDON=$(netstat -a -n | grep ":5900" | grep ESTABLISHED | sed 's/.*:5900 *\(.*\):.*/\1/g' | while read i; do host -t CNAME $i | head -1; done | sed 's/.* \(.*\)$HOSTNAME_TO_IGNORE_REGEX\./\1/g')
+  if [ "`echo $LOGGEDON|wc -l`" -lt "2" ]
+  then
+    #Single VNC user, check again in 5 seconds
+    sleep 5
+  else
+    #zenity --notification --text "Multiple VNC Conenctions:\n$LOGGEDON"
+    HINTS="\"urgency\": <byte 1>"
+    NOTIFICATION_ID=$(gdbus call "${NOTIFY_ARGS[@]}"  \
+                            --method org.freedesktop.Notifications.Notify \
+                            "$APP_NAME" "$REPLACE_ID" "$ICON" "Multiple VNC Connections" \
+                            "$LOGGEDON" \
+                            "[$ACTION]" "{$HINTS}" "int32 $EXPIRE_TIME" \
+                          | parse_notification_id)
+    sleep 4
+    gdbus call "${NOTIFY_ARGS[@]}"  --method org.freedesktop.Notifications.CloseNotification "$NOTIFICATION_ID" >/dev/null
+    NOTIFICATION_ID=$(gdbus call "${NOTIFY_ARGS[@]}"  \
+                            --method org.freedesktop.Notifications.Notify \
+                            "$APP_NAME" "$REPLACE_ID" "$ICON" "Multiple VNC Connections" \
+                            "$LOGGEDON" \
+                            "[$ACTION]" "{$HINTS}" "int32 $EXPIRE_TIME" \
+                          | parse_notification_id)
+    sleep 4
+    gdbus call "${NOTIFY_ARGS[@]}"  --method org.freedesktop.Notifications.CloseNotification "$NOTIFICATION_ID" >/dev/null
+  fi
+  sleep 4
+done
 </code>