Merge Add InetAddressMatcher

Author: rwinch

web/src/main/java/org/springframework/security/web/util/matcher/InetAddressMatcher.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2004-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.security.web.util.matcher;
+
+import java.net.InetAddress;
+
+import org.jspecify.annotations.Nullable;
+
+/**
+ * Matches an {@link InetAddress}.
+ *
+ * @author Rossen Stoyanchev
+ * @author Rob Winch
+ * @since 7.1
+ */
+@FunctionalInterface
+public interface InetAddressMatcher {
+
+	/**
+	 * Whether the given address matches.
+	 * @param address the {@link InetAddress} to check
+	 * @return {@code true} if the address matches, {@code false} otherwise
+	 */
+	boolean matches(InetAddress address);
+
+	/**
+	 * Whether the given address string matches.
+	 * @param address the IP address string to check (may be {@code null})
+	 * @return {@code true} if the address matches, {@code false} otherwise or if
+	 * {@code null}
+	 * @since 7.1
+	 */
+	default boolean matches(@Nullable String address) {
+		return (address != null) ? matches(InetAddressParser.parseAddress(address)) : false;
+	}
+
+}