From bf0b5e857fa14831252c5d0d929be8bdff626067 Mon Sep 17 00:00:00 2001
From: Tim Eertmoed <tim@eertmoed.de>
Date: Mon, 28 Oct 2024 18:53:03 +0100
Subject: [PATCH] usr/bin/custom/watchdog aktualisiert

---
 usr/bin/custom/watchdog | 90 ++++++++++++++++++++++++++---------------
 1 file changed, 57 insertions(+), 33 deletions(-)

diff --git a/usr/bin/custom/watchdog b/usr/bin/custom/watchdog
index b457f0a..316b9f8 100644
--- a/usr/bin/custom/watchdog
+++ b/usr/bin/custom/watchdog
@@ -3,44 +3,68 @@
 # Log file
 log_file="/var/log/watchdog.log"
 
-# Extract watchdog IP addresses
-watchdog=$(sudo cat /var/lib/dhcp/* | grep -a "option watchdog" | tail -1 | \
-awk '{for (i=3; i<=NF; i++) printf "%s ", $i}' | tr -d '";')
-IFS=' ' read -r -a ip_array <<< "$watchdog"
-
 # Configuration file
 config_file="/etc/watchdog.conf"
 
-# Backup current configuration
-if sudo cp "$config_file" "$config_file.bak"; then
-    echo "Backup of $config_file created successfully." >> "$log_file"
-else
-    echo "Failed to create backup of $config_file." >> "$log_file"
-fi
+# Function to update watchdog configuration
+update_watchdog_config() {
+    # Extract watchdog IP addresses
+    watchdog=$(sudo cat /var/lib/dhcp/* | grep -a "option watchdog" | tail -1 | \
+    awk '{for (i=3; i<=NF; i++) printf "%s ", $i}' | tr -d '";')
+    
+    IFS=' ' read -r -a ip_array <<< "$watchdog"
 
-# Clean existing configurations
-sudo sed -i '/ping/d' "$config_file"
-sudo sed -i '/^interval/d' "$config_file"
+    # Backup current configuration
+    if sudo cp "$config_file" "$config_file.bak"; then
+        echo "Backup of $config_file created successfully." >> "$log_file"
+    else
+        echo "Failed to create backup of $config_file." >> "$log_file"
+    fi
 
-# Set interval
-echo "interval = 60" | sudo tee -a "$config_file" > /dev/null
+    # Clean existing configurations
+    sudo sed -i '/ping/d' "$config_file"
+    sudo sed -i '/^interval/d' "$config_file"
 
-if [ ${#ip_array[@]} -eq 0 ]; then
-    echo "No IP addresses found. Watchdog configuration cleared." >> "$log_file"
-    sudo systemctl stop watchdog
-else
-    for ip in "${ip_array[@]}"; do
-        echo "ping = $ip" | sudo tee -a "$config_file" > /dev/null
-    done
-    echo "Configured watchdog to ping: ${ip_array[*]}" >> "$log_file"
-fi
+    # Set interval
+    echo "interval = 60" | sudo tee -a "$config_file" > /dev/null
 
-# Restart watchdog service
-if sudo systemctl restart watchdog; then
-    echo "Watchdog service restarted successfully." >> "$log_file"
-else
-    echo "Failed to restart watchdog service." >> "$log_file"
-fi
+    if [ ${#ip_array[@]} -eq 0 ]; then
+        echo "No IP addresses found. Watchdog configuration cleared." >> "$log_file"
+    else
+        for ip in "${ip_array[@]}"; do
+            echo "ping = $ip" | sudo tee -a "$config_file" > /dev/null
+        done
+        echo "Configured watchdog to ping: ${ip_array[*]}" >> "$log_file"
+    fi
 
-#  Version 1.1:
-#  Created 2024 by Tim Eertmoed @ WiS IT-Solutions GmbH, Germany to work on Raspian as custom pxe init script.
+    # Restart watchdog service
+    if sudo systemctl restart watchdog; then
+        echo "Watchdog service restarted successfully." >> "$log_file"
+    else
+        echo "Failed to restart watchdog service." >> "$log_file"
+    fi
+}
+
+# Main loop
+start_time=$(date +%s)
+end_time=$((start_time + 300))  # 5 minutes in seconds
+interval=30  # Initial interval of 30 seconds
+
+while true; do
+    update_watchdog_config
+    
+    current_time=$(date +%s)
+    
+    # Check if 5 minutes have passed
+    if [ "$current_time" -ge "$end_time" ]; then
+        echo "5 minutes have passed. Stopping the watchdog service." >> "$log_file"
+        sudo systemctl stop watchdog
+        break  # Exit the loop
+    fi
+    
+    echo "Waiting for $interval seconds before checking for IP addresses again..." >> "$log_file"
+    sleep $interval
+done
+
+# Version 1.4:
+# Created 2024 by Tim Eertmoed @ WiS IT-Solutions GmbH, Germany to work on Raspian as custom PXE init script.