/*

 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @bug 8178699

 * @modules java.net.http

 * @run main/othervm RestrictedHeadersTest

 * @run main/othervm -Djdk.httpclient.allowRestrictedHeaders=content-length,connection RestrictedHeadersTest content-length connection

 * @run main/othervm -Djdk.httpclient.allowRestrictedHeaders=host,upgrade RestrictedHeadersTest host upgrade

 * @run main/othervm -Djdk.httpclient.allowRestrictedHeaders=via RestrictedHeadersTest via

 */

import java.net.URI;

import java.net.http.HttpRequest;

import java.util.Set;

public class RestrictedHeadersTest {

    public static void main(String[] args) {

        if (args.length == 0) {

            runDefaultTest();

        } else {

            runTest(Set.of(args));

        }

    }

    // This list must be same as impl

    static Set<String> defaultRestrictedHeaders =

            Set.of("connection", "content-length", "expect", "host", "upgrade");

    private static void runDefaultTest() {

        System.out.println("DEFAULT TEST: no property set");

        for (String header : defaultRestrictedHeaders) {

            checkHeader(header, "foo", false);

        }

        // miscellaneous others that should succeed

        checkHeader("foobar", "barfoo", true);

        checkHeader("date", "today", true);

    }

    private static void checkHeader(String name, String value, boolean succeed) {

        try {

            HttpRequest request = HttpRequest.newBuilder(URI.create("https://foo.com/"))

                    .header(name, value)

                    .GET()

                    .build();

            if (!succeed) {

                String s = name+"/"+value+" should have failed";

                throw new RuntimeException(s);

            }

            System.out.printf("%s = %s succeeded as expected\n", name, value);

        } catch (IllegalArgumentException iae) {

            if (succeed) {

                String s = name+"/"+value+" should have succeeded";

                throw new RuntimeException(s);

            }

            System.out.printf("%s = %s failed as expected\n", name, value);

        }

    }

    // args is the Set of allowed restricted headers

    private static void runTest(Set<String> args) {

        System.out.print("RUNTEST: allowed headers set in property: ");

        for (String arg : args) System.out.printf("%s ", arg);

        System.out.println("");

        for (String header : args) {

            checkHeader(header, "val", true);

        }

        for (String header : defaultRestrictedHeaders) {

            if (!args.contains(header)) {

                checkHeader(header, "foo", false);

            }

        }

    }

}