Add debug logging to watchdog scripts

- Log START configuration values and validation
- Add detailed startup debugging in start case
- Track main() function PID and PID file creation
- Help identify why watchdog fails to start properly
- Applied to both wssshd and wssshc watchdogs

wsssh-server/debian/wssshd-watchdog

@@ -199,13 +199,20 @@ trap cleanup SIGTERM SIGINT
 
 # Main watchdog function (continuous monitoring)
 main() {
+    # Debug: Log the START value
+    log_message "START configuration value: '$START'"
+
     # Check if START is enabled (accept various forms: yes, YES, Y, 1, true, TRUE)
     START_LOWER=$(echo "$START" | tr '[:upper:]' '[:lower:]')
+    log_message "START_LOWER: '$START_LOWER'"
+
     if [ "$START_LOWER" != "yes" ] && [ "$START_LOWER" != "y" ] && [ "$START_LOWER" != "1" ] && [ "$START_LOWER" != "true" ]; then
         log_message "START is not set to a valid enabled value in /etc/default/wssshd. Exiting."
         exit 0
     fi
 
+    log_message "START validation passed, proceeding with watchdog initialization"
+
     # Store watchdog PID
     echo $$ > "$WATCHDOG_PID_FILE"
 
@@ -241,21 +248,33 @@ main() {
 # Handle command line arguments
 case "$1" in
     start)
+        echo "Starting watchdog..."
         if [ -f "$WATCHDOG_PID_FILE" ]; then
             echo "Watchdog is already running"
             exit 1
         fi
+        echo "Calling main() function..."
         main &
+        main_pid=$!
+        echo "main() started with PID: $main_pid"
         # Wait for PID file to be created (max 5 seconds)
         count=0
         while [ $count -lt 10 ] && [ ! -f "$WATCHDOG_PID_FILE" ]; do
+            echo "Waiting for PID file... (attempt $count)"
             sleep 0.5
             count=$((count + 1))
         done
         if [ -f "$WATCHDOG_PID_FILE" ]; then
-            echo "Watchdog started"
+            watchdog_pid=$(cat "$WATCHDOG_PID_FILE")
+            echo "Watchdog started successfully (PID: $watchdog_pid)"
         else
             echo "Watchdog failed to create PID file"
+            echo "Checking if main() process is still running..."
+            if kill -0 "$main_pid" 2>/dev/null; then
+                echo "main() process $main_pid is still running"
+            else
+                echo "main() process $main_pid has exited"
+            fi
             exit 1
         fi
         ;;

wssshtools/debian/wssshc-watchdog

@@ -199,13 +199,20 @@ trap cleanup SIGTERM SIGINT
 
 # Main watchdog function (continuous monitoring)
 main() {
+    # Debug: Log the START value
+    log_message "START configuration value: '$START'"
+
     # Check if START is enabled (accept various forms: yes, YES, Y, 1, true, TRUE)
     START_LOWER=$(echo "$START" | tr '[:upper:]' '[:lower:]')
+    log_message "START_LOWER: '$START_LOWER'"
+
     if [ "$START_LOWER" != "yes" ] && [ "$START_LOWER" != "y" ] && [ "$START_LOWER" != "1" ] && [ "$START_LOWER" != "true" ]; then
         log_message "START is not set to a valid enabled value in /etc/default/wssshc. Exiting."
         exit 0
     fi
 
+    log_message "START validation passed, proceeding with watchdog initialization"
+
     # Store watchdog PID
     echo $$ > "$WATCHDOG_PID_FILE"
 
@@ -241,21 +248,33 @@ main() {
 # Handle command line arguments
 case "$1" in
     start)
+        echo "Starting watchdog..."
         if [ -f "$WATCHDOG_PID_FILE" ]; then
             echo "Watchdog is already running"
             exit 1
         fi
+        echo "Calling main() function..."
         main &
+        main_pid=$!
+        echo "main() started with PID: $main_pid"
         # Wait for PID file to be created (max 5 seconds)
         count=0
         while [ $count -lt 10 ] && [ ! -f "$WATCHDOG_PID_FILE" ]; do
+            echo "Waiting for PID file... (attempt $count)"
             sleep 0.5
             count=$((count + 1))
         done
         if [ -f "$WATCHDOG_PID_FILE" ]; then
-            echo "Watchdog started"
+            watchdog_pid=$(cat "$WATCHDOG_PID_FILE")
+            echo "Watchdog started successfully (PID: $watchdog_pid)"
         else
             echo "Watchdog failed to create PID file"
+            echo "Checking if main() process is still running..."
+            if kill -0 "$main_pid" 2>/dev/null; then
+                echo "main() process $main_pid is still running"
+            else
+                echo "main() process $main_pid has exited"
+            fi
             exit 1
         fi
         ;;