Show current ip address on dynamic dns screen

src/freedombone-installer

@@ -139,6 +139,14 @@ ICECAST_DIR=/icestream
 ICECAST_JINGLES=/jingles
 liquidsoap_script=/etc/liquidsoapuser/radio.liq
 
+IPV4_ADDRESS_TEST_DESTINATION='85.214.73.63'
+webadmin_ipv4_address=
+
+function get_ipv4_address {
+    IPv4dev=$(ip route get $IPV4_ADDRESS_TEST_DESTINATION | awk '{for(i=1;i<=NF;i++)if($i~/dev/)print $(i+1)}')
+    ip -o -f inet addr show dev "$IPv4dev" | awk '{print $4}' | awk 'END {print}' | awk -F '/' '{print $1}'
+}
+
 function web_admin_background_color {
     if ! grep -q 'WEBADMIN_BACKGROUND_COLOR=' "/root/${PROJECT_NAME}.cfg"; then
         echo 'WEBADMIN_BACKGROUND_COLOR=white' >> "/root/${PROJECT_NAME}.cfg"
@@ -1848,6 +1856,7 @@ function regenerate_dynamic_dns {
         fi
         sed -i "s|\"$ddns\"|\"$ddns\" selected|g" "$webadmin_install_dir/dynamicdns.html"
         sed -i "s|DDNS_USERNAME|$ddns_username|g" "$webadmin_install_dir/dynamicdns.html"
+        sed -i "s|CURRENT_IP_ADDRESS|$(get_ipv4_address)|g" "$webadmin_install_dir/dynamicdns.html"
         # Note: For security don't populate the password
         #sed -i "s|DDNS_PASSWORD|$ddns_password|g" "$webadmin_install_dir/dynamicdns.html"
         chown www-data:www-data "$webadmin_install_dir/dynamicdns.html"
@@ -2590,6 +2599,14 @@ function update_dynamic_dns {
     fi
 }
 
+function webadmin_monitor_ip_changes {
+    curr_ipv4=$(get_ipv4_address)
+    if [[ "$curr_ipv4" != "$webadmin_ipv4_address" ]]; then
+        webadmin_ipv4_address=$curr_ipv4
+        update_dynamic_dns
+    fi
+}
+
 function change_theme {
     if [ -f "$theme_file" ]; then
         bg_color=$(awk -F ',' '{print $1}' < "$theme_file")
@@ -2895,6 +2912,7 @@ do
                     webadmin_change_password
                     update_blocklist
                     update_dynamic_dns
+                    webadmin_monitor_ip_changes
                     update_system_monitor
                     change_language
                     change_theme

webadmin/EN/dynamicdns_template.html

@@ -127,6 +127,8 @@
 
         <p class="headertext" translate="yes">Dynamic DNS</p>
 
+        <p class="headertext" translate="no">CURRENT_IP_ADDRESS</p>
+
         <form action="dynamicdns.php" method="post">
           <select class="ddnslist" name="dynamicdns" size="5">
             <option value="none" translate="yes">none</option>