Update 'k3os-toggle-sshd-password-auth.sh'

k3os-toggle-sshd-password-auth.sh

@@ -6,14 +6,12 @@ AUTH_LINE="PasswordAuthentication"
 
 # --- Function to check the current state ---
 get_current_state() {
-    # Search the file, handle lines commented out with #, and extract the effective value.
-    # The 'yq' tool (or similar) is ideal for YAML/JSON, but 'grep' is standard for config files.
-    # We use a pattern that handles optional whitespace and comments.
+    # Using -E for extended regular expressions instead of -P for broader compatibility
     
-    # 1. Use grep to find the line, ignoring comments that start the line
+    # 1. Use grep to find the line, including commented lines
     # 2. Use sed to remove leading/trailing whitespace and the setting name
     # 3. Use tr to convert to lowercase for reliable comparison
-    CURRENT_STATE=$(grep -iP "^\s*#?\s*${AUTH_LINE}\s+" "$SSH_CONFIG_FILE" | \
+    CURRENT_STATE=$(grep -iE "^\s*#?\s*${AUTH_LINE}\s+" "$SSH_CONFIG_FILE" 2>/dev/null | \
                     sed -E "s/^\s*#?\s*${AUTH_LINE}\s*//" | \
                     tr '[:upper:]' '[:lower:]' | \
                     head -n 1)
@@ -24,9 +22,8 @@ get_current_state() {
     elif [[ "$CURRENT_STATE" == "yes" ]]; then
         echo "yes"
     else
-        # Handle cases where the setting is missing, which usually defaults to 'no' 
-        # but check for an explicit 'no' in the file.
-        if grep -qP "^\s*${AUTH_LINE}\s+no" "$SSH_CONFIG_FILE"; then
+        # Handle cases where the setting is missing or invalid. Check for an explicit 'no'.
+        if grep -qE "^\s*${AUTH_LINE}\s+no" "$SSH_CONFIG_FILE" 2>/dev/null; then
             echo "no"
         else
             echo "no" # Defaulting to the most secure setting if not explicitly 'yes'
@@ -64,7 +61,7 @@ if [[ "$response" =~ ^([yY])$ ]]; then
     sudo sed -i.bak -E "s/^\s*#?\s*${AUTH_LINE}\s+(yes|no)/${AUTH_LINE} ${NEW_STATE}/" "$SSH_CONFIG_FILE"
     
     # 2. If the line was missing or not matched (a rare edge case), ensure it is added
-    if ! grep -qP "^\s*${AUTH_LINE}\s+${NEW_STATE}" "$SSH_CONFIG_FILE"; then
+    if ! grep -qE "^\s*${AUTH_LINE}\s+${NEW_STATE}" "$SSH_CONFIG_FILE" 2>/dev/null; then
         echo "${AUTH_LINE} ${NEW_STATE}" | sudo tee -a "$SSH_CONFIG_FILE" > /dev/null
     fi