/*

 * Copyright (c) 2003, 2016, 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

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 * questions.

 */

import com.sun.net.httpserver.*;

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.math.BigInteger;

import java.net.InetSocketAddress;

import java.nio.file.Files;

import java.nio.file.Paths;

import java.security.KeyStore;

import java.security.PrivateKey;

import java.security.Signature;

import java.security.cert.Certificate;

import java.security.cert.X509Certificate;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Calendar;

import java.util.List;

import java.util.jar.JarEntry;

import java.util.jar.JarFile;

import jdk.testlibrary.*;

import jdk.testlibrary.JarUtils;

import sun.security.pkcs.ContentInfo;

import sun.security.pkcs.PKCS7;

import sun.security.pkcs.PKCS9Attribute;

import sun.security.pkcs.SignerInfo;

import sun.security.timestamp.TimestampToken;

import sun.security.util.DerOutputStream;

import sun.security.util.DerValue;

import sun.security.util.ObjectIdentifier;

import sun.security.x509.AlgorithmId;

import sun.security.x509.X500Name;

/*

 * @test

 * @bug 6543842 6543440 6939248 8009636 8024302 8163304 8169911

 * @summary checking response of timestamp

 * @modules java.base/sun.security.pkcs

 *          java.base/sun.security.timestamp

 *          java.base/sun.security.x509

 *          java.base/sun.security.util

 *          java.base/sun.security.tools.keytool

 * @library /lib/testlibrary

 * @run main/timeout=600 TimestampCheck

 */

public class TimestampCheck {

    static final String defaultPolicyId = "2.3.4";

    static String host = null;

    static class Handler implements HttpHandler, AutoCloseable {

        private final HttpServer httpServer;

        private final String keystore;

        @Override

        public void handle(HttpExchange t) throws IOException {

            int len = 0;

            for (String h: t.getRequestHeaders().keySet()) {

                if (h.equalsIgnoreCase("Content-length")) {

                    len = Integer.valueOf(t.getRequestHeaders().get(h).get(0));

                }

            }

            byte[] input = new byte[len];

            t.getRequestBody().read(input);

            try {

                String path = t.getRequestURI().getPath().substring(1);

                byte[] output = sign(input, path);

                Headers out = t.getResponseHeaders();

                out.set("Content-Type", "application/timestamp-reply");

                t.sendResponseHeaders(200, output.length);

                OutputStream os = t.getResponseBody();

                os.write(output);

            } catch (Exception e) {

                e.printStackTrace();

                t.sendResponseHeaders(500, 0);

            }

            t.close();

        }

        /**

         * @param input The data to sign

         * @param path different cases to simulate, impl on URL path

         * @returns the signed

         */

        byte[] sign(byte[] input, String path) throws Exception {

            DerValue value = new DerValue(input);

            System.err.println("\nIncoming Request\n===================");

            System.err.println("Version: " + value.data.getInteger());

            DerValue messageImprint = value.data.getDerValue();

            AlgorithmId aid = AlgorithmId.parse(

                    messageImprint.data.getDerValue());

            System.err.println("AlgorithmId: " + aid);

            ObjectIdentifier policyId = new ObjectIdentifier(defaultPolicyId);

            BigInteger nonce = null;

            while (value.data.available() > 0) {

                DerValue v = value.data.getDerValue();

                if (v.tag == DerValue.tag_Integer) {

                    nonce = v.getBigInteger();

                    System.err.println("nonce: " + nonce);

                } else if (v.tag == DerValue.tag_Boolean) {

                    System.err.println("certReq: " + v.getBoolean());

                } else if (v.tag == DerValue.tag_ObjectId) {

                    policyId = v.getOID();

                    System.err.println("PolicyID: " + policyId);

                }

            }

            System.err.println("\nResponse\n===================");

            KeyStore ks = KeyStore.getInstance(

                    new File(keystore), "changeit".toCharArray());

            String alias = "ts";

            if (path.startsWith("bad") || path.equals("weak")) {

                alias = "ts" + path;

            }

            if (path.equals("diffpolicy")) {

                policyId = new ObjectIdentifier(defaultPolicyId);

            }

            DerOutputStream statusInfo = new DerOutputStream();

            statusInfo.putInteger(0);

            AlgorithmId[] algorithms = {aid};

            Certificate[] chain = ks.getCertificateChain(alias);

            X509Certificate[] signerCertificateChain;

            X509Certificate signer = (X509Certificate)chain[0];

            if (path.equals("fullchain")) {   // Only case 5 uses full chain

                signerCertificateChain = new X509Certificate[chain.length];

                for (int i=0; i<chain.length; i++) {

                    signerCertificateChain[i] = (X509Certificate)chain[i];

                }

            } else if (path.equals("nocert")) {

                signerCertificateChain = new X509Certificate[0];

            } else {

                signerCertificateChain = new X509Certificate[1];

                signerCertificateChain[0] = (X509Certificate)chain[0];

            }

            DerOutputStream tst = new DerOutputStream();

            tst.putInteger(1);

            tst.putOID(policyId);

            if (!path.equals("baddigest") && !path.equals("diffalg")) {

                tst.putDerValue(messageImprint);

            } else {

                byte[] data = messageImprint.toByteArray();

                if (path.equals("diffalg")) {

                    data[6] = (byte)0x01;

                } else {

                    data[data.length-1] = (byte)0x01;

                    data[data.length-2] = (byte)0x02;

                    data[data.length-3] = (byte)0x03;

                }

                tst.write(data);

            }

            tst.putInteger(1);

            Calendar cal = Calendar.getInstance();

            tst.putGeneralizedTime(cal.getTime());

            if (path.equals("diffnonce")) {

                tst.putInteger(1234);

            } else if (path.equals("nononce")) {

                // no noce

            } else {

                tst.putInteger(nonce);

            }

            DerOutputStream tstInfo = new DerOutputStream();

            tstInfo.write(DerValue.tag_Sequence, tst);

            DerOutputStream tstInfo2 = new DerOutputStream();

            tstInfo2.putOctetString(tstInfo.toByteArray());

            // Always use the same algorithm at timestamp signing

            // so it is different from the hash algorithm.

            Signature sig = Signature.getInstance("SHA1withRSA");

            sig.initSign((PrivateKey)(ks.getKey(

                    alias, "changeit".toCharArray())));

            sig.update(tstInfo.toByteArray());

            ContentInfo contentInfo = new ContentInfo(new ObjectIdentifier(

                    "1.2.840.113549.1.9.16.1.4"),

                    new DerValue(tstInfo2.toByteArray()));

            System.err.println("Signing...");

            System.err.println(new X500Name(signer

                    .getIssuerX500Principal().getName()));

            System.err.println(signer.getSerialNumber());

            SignerInfo signerInfo = new SignerInfo(

                    new X500Name(signer.getIssuerX500Principal().getName()),

                    signer.getSerialNumber(),

                    AlgorithmId.get("SHA-1"), AlgorithmId.get("RSA"), sig.sign());

            SignerInfo[] signerInfos = {signerInfo};

            PKCS7 p7 = new PKCS7(algorithms, contentInfo,

                    signerCertificateChain, signerInfos);

            ByteArrayOutputStream p7out = new ByteArrayOutputStream();

            p7.encodeSignedData(p7out);

            DerOutputStream response = new DerOutputStream();

            response.write(DerValue.tag_Sequence, statusInfo);

            response.putDerValue(new DerValue(p7out.toByteArray()));

            DerOutputStream out = new DerOutputStream();

            out.write(DerValue.tag_Sequence, response);

            return out.toByteArray();

        }

        private Handler(HttpServer httpServer, String keystore) {

            this.httpServer = httpServer;

            this.keystore = keystore;

        }

        /**

         * Initialize TSA instance.

         *

         * Extended Key Info extension of certificate that is used for

         * signing TSA responses should contain timeStamping value.

         */

        static Handler init(int port, String keystore) throws IOException {

            HttpServer httpServer = HttpServer.create(

                    new InetSocketAddress(port), 0);

            Handler tsa = new Handler(httpServer, keystore);

            httpServer.createContext("/", tsa);

            return tsa;

        }

        /**

         * Start TSA service.

         */

        void start() {

            httpServer.start();

        }

        /**

         * Stop TSA service.

         */

        void stop() {

            httpServer.stop(0);

        }

        /**

         * Return server port number.

         */

        int getPort() {

            return httpServer.getAddress().getPort();

        }

        @Override

        public void close() throws Exception {

            stop();

        }

    }

    public static void main(String[] args) throws Throwable {

        prepare();

        try (Handler tsa = Handler.init(0, "tsks");) {

            tsa.start();

            int port = tsa.getPort();

            host = "http://localhost:" + port + "/";

            if (args.length == 0) {         // Run this test

                sign("none")

                        .shouldContain("is not timestamped")

                        .shouldHaveExitValue(0);

                sign("badku")

                        .shouldHaveExitValue(0);

                checkBadKU("badku.jar");

                sign("normal")

                        .shouldNotContain("is not timestamped")

                        .shouldHaveExitValue(0);

                sign("nononce")

                        .shouldHaveExitValue(1);

                sign("diffnonce")

                        .shouldHaveExitValue(1);

                sign("baddigest")

                        .shouldHaveExitValue(1);

                sign("diffalg")

                        .shouldHaveExitValue(1);

                sign("fullchain")

                        .shouldHaveExitValue(0);   // Success, 6543440 solved.

                sign("bad1")

                        .shouldHaveExitValue(1);

                sign("bad2")

                        .shouldHaveExitValue(1);

                sign("bad3")

                        .shouldHaveExitValue(1);

                sign("nocert")

                        .shouldHaveExitValue(1);

                sign("policy", "-tsapolicyid",  "1.2.3")

                        .shouldHaveExitValue(0);

                checkTimestamp("policy.jar", "1.2.3", "SHA-256");

                sign("diffpolicy", "-tsapolicyid", "1.2.3")

                        .shouldHaveExitValue(1);

                sign("tsaalg", "-tsadigestalg", "SHA")

                        .shouldHaveExitValue(0);

                checkTimestamp("tsaalg.jar", defaultPolicyId, "SHA-1");

                sign("weak", "-digestalg", "MD5",

                                "-sigalg", "MD5withRSA", "-tsadigestalg", "MD5")

                        .shouldHaveExitValue(0)

                        .shouldMatch("MD5.*-digestalg.*risk")

                        .shouldMatch("MD5.*-tsadigestalg.*risk")

                        .shouldMatch("MD5withRSA.*-sigalg.*risk");

                checkWeak("weak.jar");

                signWithAliasAndTsa("halfWeak", "old.jar", "old", "-digestalg", "MD5")

                        .shouldHaveExitValue(0);

                checkHalfWeak("halfWeak.jar");

                // sign with DSA key

                signWithAliasAndTsa("sign1", "old.jar", "dsakey")

                        .shouldHaveExitValue(0);

                // sign with RSAkeysize < 1024

                signWithAliasAndTsa("sign2", "sign1.jar", "weakkeysize")

                        .shouldHaveExitValue(0);

                checkMultiple("sign2.jar");

                // When .SF or .RSA is missing or invalid

                checkMissingOrInvalidFiles("normal.jar");

            } else {                        // Run as a standalone server

                System.err.println("Press Enter to quit server");

                System.in.read();

            }

        }

    }

    private static void checkMissingOrInvalidFiles(String s)

            throws Throwable {

        JarUtils.updateJar(s, "1.jar", "-", "META-INF/OLD.SF");

        verify("1.jar", "-verbose")

                .shouldHaveExitValue(0)

                .shouldContain("treated as unsigned")

                .shouldContain("Missing signature-related file META-INF/OLD.SF");

        JarUtils.updateJar(s, "2.jar", "-", "META-INF/OLD.RSA");

        verify("2.jar", "-verbose")

                .shouldHaveExitValue(0)

                .shouldContain("treated as unsigned")

                .shouldContain("Missing block file for signature-related file META-INF/OLD.SF");

        JarUtils.updateJar(s, "3.jar", "META-INF/OLD.SF");

        verify("3.jar", "-verbose")

                .shouldHaveExitValue(0)

                .shouldContain("treated as unsigned")

                .shouldContain("Unparsable signature-related file META-INF/OLD.SF");

        JarUtils.updateJar(s, "4.jar", "META-INF/OLD.RSA");

        verify("4.jar", "-verbose")

                .shouldHaveExitValue(0)

                .shouldContain("treated as unsigned")

                .shouldContain("Unparsable signature-related file META-INF/OLD.RSA");

    }

    static OutputAnalyzer jarsigner(List<String> extra)

            throws Throwable {

        JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jarsigner")

                .addVMArg("-Duser.language=en")

                .addVMArg("-Duser.country=US")

                .addToolArg("-keystore")

                .addToolArg("tsks")

                .addToolArg("-storepass")

                .addToolArg("changeit");

        for (String s : extra) {

            if (s.startsWith("-J")) {

                launcher.addVMArg(s.substring(2));

            } else {

                launcher.addToolArg(s);

            }

        }

        return ProcessTools.executeCommand(launcher.getCommand());

    }

    static OutputAnalyzer verify(String file, String... extra)

            throws Throwable {

        List<String> args = new ArrayList<>();

        args.add("-verify");

        args.add(file);

        args.addAll(Arrays.asList(extra));

        return jarsigner(args);

    }

    static void checkBadKU(String file) throws Throwable {

        verify(file)

                .shouldHaveExitValue(0)

                .shouldContain("treated as unsigned")

                .shouldContain("re-run jarsigner with debug enabled");

        verify(file, "-verbose")

                .shouldHaveExitValue(0)

                .shouldContain("Signed by")

                .shouldContain("treated as unsigned")

                .shouldContain("re-run jarsigner with debug enabled");

        verify(file, "-J-Djava.security.debug=jar")

                .shouldHaveExitValue(0)

                .shouldContain("SignatureException: Key usage restricted")

                .shouldContain("treated as unsigned")

                .shouldContain("re-run jarsigner with debug enabled");

    }

    static void checkWeak(String file) throws Throwable {

        verify(file)

                .shouldHaveExitValue(0)

                .shouldContain("treated as unsigned")

                .shouldMatch("weak algorithm that is now disabled.")

                .shouldMatch("Re-run jarsigner with the -verbose option for more details");

        verify(file, "-verbose")

                .shouldHaveExitValue(0)

                .shouldContain("treated as unsigned")

                .shouldMatch("weak algorithm that is now disabled by")

                .shouldMatch("Digest algorithm: .*weak")

                .shouldMatch("Signature algorithm: .*weak")

                .shouldMatch("Timestamp digest algorithm: .*weak")

                .shouldNotMatch("Timestamp signature algorithm: .*weak.*weak")

                .shouldMatch("Timestamp signature algorithm: .*key.*weak");

        verify(file, "-J-Djava.security.debug=jar")

                .shouldHaveExitValue(0)

    }

    static void checkHalfWeak(String file) throws Throwable {

        verify(file)

                .shouldHaveExitValue(0)

                .shouldContain("treated as unsigned")

                .shouldMatch("weak algorithm that is now disabled.")

                .shouldMatch("Re-run jarsigner with the -verbose option for more details");

        verify(file, "-verbose")

                .shouldHaveExitValue(0)

                .shouldContain("treated as unsigned")

                .shouldMatch("weak algorithm that is now disabled by")

                .shouldMatch("Digest algorithm: .*weak")

                .shouldNotMatch("Signature algorithm: .*weak")

                .shouldNotMatch("Timestamp digest algorithm: .*weak")

                .shouldNotMatch("Timestamp signature algorithm: .*weak.*weak")

                .shouldNotMatch("Timestamp signature algorithm: .*key.*weak");

     }

    static void checkMultiple(String file) throws Throwable {

        verify(file)

                .shouldHaveExitValue(0)

                .shouldContain("jar verified");

        verify(file, "-verbose", "-certs")

                .shouldHaveExitValue(0)

                .shouldContain("jar verified")

                .shouldMatch("X.509.*CN=dsakey")

                .shouldNotMatch("X.509.*CN=weakkeysize")

                .shouldMatch("Signed by .*CN=dsakey")

                .shouldMatch("Signed by .*CN=weakkeysize")

                .shouldMatch("Signature algorithm: .*key.*weak");

     }

    static void checkTimestamp(String file, String policyId, String digestAlg)

            throws Exception {

        try (JarFile jf = new JarFile(file)) {

            JarEntry je = jf.getJarEntry("META-INF/OLD.RSA");

            try (InputStream is = jf.getInputStream(je)) {

                byte[] content = is.readAllBytes();

                PKCS7 p7 = new PKCS7(content);

                SignerInfo[] si = p7.getSignerInfos();

                if (si == null || si.length == 0) {