/*

 * Copyright (c) 2019, 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.

 */

import java.util.List;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import java.util.stream.Collectors;

import jdk.jpackage.test.TKit;

import jdk.jpackage.test.Executor;

import jdk.jpackage.internal.MacCertificate;

public class SigningCheck {

    public static void checkCertificates() {

        List<String> result = findCertificate(SigningBase.APP_CERT, SigningBase.KEYCHAIN);

        String key = findKey(SigningBase.APP_CERT, result);

        validateCertificate(key);

        validateCertificateTrust(SigningBase.APP_CERT);

        result = findCertificate(SigningBase.INSTALLER_CERT, SigningBase.KEYCHAIN);

        key = findKey(SigningBase.INSTALLER_CERT, result);

        validateCertificate(key);

        validateCertificateTrust(SigningBase.INSTALLER_CERT);

    }

    private static List<String> findCertificate(String name, String keyChain) {

        List<String> result = new Executor()

                .setExecutable("security")

                .addArguments("find-certificate", "-c", name, "-a", keyChain)

                .executeAndGetOutput();

        return result;

    }

    private static String findKey(String name, List<String> result) {

        Pattern p = Pattern.compile("\"alis\"<blob>=\"([^\"]+)\"");

        Matcher m = p.matcher(result.stream().collect(Collectors.joining()));

        if (!m.find()) {

            TKit.trace("Did not found a key for '" + name + "'");

            return null;

        }

        String matchedKey = m.group(1);

        if (m.find()) {

            TKit.trace("Found more than one key for '" + name + "'");

            return null;

        }

        TKit.trace("Using key '" + matchedKey);

        return matchedKey;

    }

    private static void validateCertificate(String key) {

        if (key != null) {

            MacCertificate certificate = new MacCertificate(key);

            if (!certificate.isValid()) {

                TKit.throwSkippedException("Certifcate expired: " + key);

            } else {

                return;

            }

        }

        TKit.throwSkippedException("Cannot find required certifciates: " + key);

    }

    private static void validateCertificateTrust(String name) {

        List<String> result = new Executor()

                .setExecutable("security")

                .addArguments("dump-trust-settings")

                .executeAndGetOutput();

    }

}