Added public suffix list loader

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1623462 13f79535-47bb-0310-9956-ffa450edef68

httpclient/src/main/java/org/apache/http/conn/ssl/SSLConnectionSocketFactory.java

@@ -46,6 +46,7 @@ import javax.security.auth.x500.X500Principal;
 import org.apache.http.HttpHost;
 import org.apache.http.annotation.ThreadSafe;
 import org.apache.http.conn.socket.LayeredConnectionSocketFactory;
+import org.apache.http.conn.util.PublicSuffixMatcherLoader;
 import org.apache.http.protocol.HttpContext;
 import org.apache.http.util.Args;
 import org.apache.http.util.TextUtils;
@@ -148,7 +149,7 @@ public class SSLConnectionSocketFactory implements LayeredConnectionSocketFactor
      * @since 4.4
      */
     public static HostnameVerifier getDefaultHostnameVerifier() {
-        return new DefaultHostnameVerifier();
+        return new DefaultHostnameVerifier(PublicSuffixMatcherLoader.getDefault());
     }
 
     /**

httpclient/src/main/java/org/apache/http/conn/util/PublicSuffixListParser.java

@@ -105,7 +105,7 @@ public final class PublicSuffixListParser {
                 sb.append(c);
             }
             if (sb.length() > MAX_LINE_LEN) {
-                throw new IOException("Line too long"); // prevent excess memory usage
+                return false; // prevent excess memory usage
             }
         }
         return (b != -1);

httpclient/src/main/java/org/apache/http/conn/util/PublicSuffixMatcherLoader.java

@@ -0,0 +1,86 @@
+/*
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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
+ *
+ *   http://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.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+package org.apache.http.conn.util;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.URL;
+import java.util.Arrays;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.http.Consts;
+import org.apache.http.annotation.ThreadSafe;
+import org.apache.http.util.Args;
+
+/**
+ * @since 4.4
+ */
+@ThreadSafe
+public final class PublicSuffixMatcherLoader {
+
+    public static PublicSuffixMatcher load(final URL url) throws IOException {
+        Args.notNull(url, "URL");
+        final InputStream in = url.openStream();
+        try {
+            final PublicSuffixList list = new PublicSuffixListParser().parse(
+                    new InputStreamReader(in, Consts.UTF_8));
+            return new PublicSuffixMatcher(list.getRules(), list.getExceptions());
+        } finally {
+            in.close();
+        }
+    }
+
+    private static volatile PublicSuffixMatcher DEFAULT_INSTANCE;
+
+    public static PublicSuffixMatcher getDefault() {
+        if (DEFAULT_INSTANCE == null) {
+            synchronized (PublicSuffixMatcherLoader.class) {
+                if (DEFAULT_INSTANCE == null){
+                    final URL url = PublicSuffixMatcherLoader.class.getResource(
+                            "mozilla/public-suffix-list.txt");
+                    if (url != null) {
+                        try {
+                            DEFAULT_INSTANCE = load(url);
+                        } catch (IOException ex) {
+                            // Should never happen
+                            final Log log = LogFactory.getLog(PublicSuffixMatcherLoader.class);
+                            if (log.isWarnEnabled()) {
+                                log.warn("Failure loading public suffix list from default resource", ex);
+                            }
+                        }
+                    } else {
+                        DEFAULT_INSTANCE = new PublicSuffixMatcher(Arrays.asList("com"), null);
+                    }
+                }
+            }
+        }
+        return DEFAULT_INSTANCE;
+    }
+
+}