autoip-bash3.patch

--- autoip.sh	2024-09-21 11:55:18.318920993 -0600
+++ autoip.sh.bak	2024-09-21 11:56:58.661574532 -0600
@@ -60,7 +60,7 @@
   [[ "$ip" =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]
 }
 
-# Function to update the IP in NO-IP
+# Function to update the IP in No-IP
 update_noip() {
   local current_ip_file="/tmp/autoip"
 
@@ -74,36 +74,49 @@
   if validate_ip "$current_ip"; then
     response=$(curl -s -X GET "http://dynupdate.no-ip.com/nic/update?hostname=${hostname}&myip=${current_ip}" -u "${user}:${password}" -H "User-Agent: ${user_agent}")
 
-    # List of possible responses with their log levels and associated messages
-    declare -A responses=(
-      ["good"]="INFO: DNS hostname updated successfully: ${response}"
-      ["nochg"]="INFO: The IP is current, no update performed: ${response}"
-      ["nohost"]="ERROR: The hostname does not exist under the specified account."
-      ["badauth"]="ERROR: Invalid username and password combination."
-      ["badagent"]="ERROR: Client disabled. No further updates should be made without user intervention."
-      ["!donator"]="ERROR: Attempted to use a feature not available to the user."
-      ["abuse"]="ERROR: Username blocked due to abuse. Updates halted."
-      ["911"]="ERROR: Fatal error at No-IP. Retry no sooner than 30 minutes."
-    )
-
-    # Flags to find a match
-    found=false
-
-    # Search the list of possible responses
-    for key in "${!responses[@]}"; do
-      if echo "$response" | grep -q "^$key"; then
-        # Extract level and message from the array value
-        IFS=':' read -r level message <<< "${responses[$key]}"
-        log_message "$level" "$message"
-        found=true
-        break
-      fi
-    done
-
-    # Message for unexpected responses
-    if [[ "$found" == false ]]; then
-      log_message "WARNING" "Unexpected response from the server: ${response}"
-    fi
+    # Use case to handle different server responses
+    case "$response" in
+      good*)
+        level="INFO"
+        message="DNS hostname updated successfully: ${response}"
+        ;;
+      nochg*)
+        level="INFO"
+        message="The IP is current, no update performed: ${response}"
+        ;;
+      nohost*)
+        level="ERROR"
+        message="The hostname does not exist under the specified account."
+        ;;
+      badauth*)
+        level="ERROR"
+        message="Invalid username and password combination."
+        ;;
+      badagent*)
+        level="ERROR"
+        message="Client disabled. No further updates should be made without user intervention."
+        ;;
+      !donator*)
+        level="ERROR"
+        message="Attempted to use a feature not available to the user."
+        ;;
+      abuse*)
+        level="ERROR"
+        message="Username blocked due to abuse. Updates halted."
+        ;;
+      911*)
+        level="ERROR"
+        message="Fatal error at No-IP. Retry no sooner than 30 minutes."
+        ;;
+      *)
+        level="WARNING"
+        message="Unexpected response from the server: ${response}"
+        ;;
+    esac
+
+    # Log the message
+    log_message "$level" "$message"
+
   else
     log_message "WARNING" "The IP ${current_ip} is invalid."
     return 1