GeoIP: ignore local addresses

2017-07-07 20:41:10 +02:00
parent 001e5d0376
commit cd4693eedf
3 changed files with 53 additions and 2 deletions
@@ -0,0 +1,28 @@
+package fr.xephi.authme.util;
+
+import java.util.regex.Pattern;
+
+/**
+ * Utility class about the InternetProtocol
+ */
+public class InternetProtocolUtils {
+
+    private final static Pattern LOCAL_ADDRESS_PATTERN =
+        Pattern.compile("(^127\\.)|(^(0)?10\\.)|(^172\\.(0)?1[6-9]\\.)|(^172\\.(0)?2[0-9]\\.)" +
+            "|(^172\\.(0)?3[0-1]\\.)|(^169\\.254\\.)|(^192\\.168\\.)");
+
+    // Utility class
+    private InternetProtocolUtils() {
+    }
+
+    /**
+     * Checks if the specified address is a private or loopback address
+     *
+     * @param address address to check
+     *
+     * @return true if the address is a local or loopback address, false otherwise
+     */
+    public static boolean isLocalAddress(String address) {
+        return LOCAL_ADDRESS_PATTERN.matcher(address).find();
+    }
+}