/*
 * 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.
 */
package org.apache.harmony.tests.java.util.jar;


import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.security.CodeSigner;
import java.security.InvalidKeyException;
import java.security.InvalidParameterException;
import java.security.Permission;
import java.security.PrivateKey;
import java.security.Provider;
import java.security.PublicKey;
import java.security.Security;
import java.security.SignatureException;
import java.security.SignatureSpi;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.Vector;
import java.util.jar.Attributes;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.jar.JarOutputStream;
import java.util.jar.Manifest;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import junit.framework.TestCase;

import libcore.io.IoUtils;

import tests.support.resource.Support_Resources;


public class JarFileTest extends TestCase {

    // BEGIN Android-added
    public byte[] getAllBytesFromStream(InputStream is) throws IOException {
        ByteArrayOutputStream bs = new ByteArrayOutputStream();
        byte[] buf = new byte[666];
        int iRead;
        int off;
        while (is.available() > 0) {
            iRead = is.read(buf, 0, buf.length);
            if (iRead > 0) bs.write(buf, 0, iRead);
        }
        return bs.toByteArray();
    }

    // END Android-added

    private final String jarName = "hyts_patch.jar"; // a 'normal' jar file

    private final String jarName2 = "hyts_patch2.jar";

    private final String jarName3 = "hyts_manifest1.jar";

    private final String jarName4 = "hyts_signed.jar";

    private final String jarName5 = "hyts_signed_inc.jar";

    private final String jarName6 = "hyts_signed_sha256withrsa.jar";

    private final String jarName7 = "hyts_signed_sha256digest_sha256withrsa.jar";

    private final String jarName8 = "hyts_signed_sha512digest_sha512withecdsa.jar";

    private final String jarName9 = "hyts_signed_sha256digest_sha256withecdsa.jar";

    private final String authAttrsJar = "hyts_signed_authAttrs.jar";

    private final String entryName = "foo/bar/A.class";

    private final String entryName3 = "coucou/FileAccess.class";

    private final String integrateJar = "Integrate.jar";

    private final String integrateJarEntry = "Test.class";

    private final String emptyEntryJar = "EmptyEntries_signed.jar";

    /*
     * /usr/bin/openssl genrsa 2048 > root1.pem
     * /usr/bin/openssl req -new -key root1.pem -out root1.csr -subj '/CN=root1'
     * /usr/bin/openssl x509 -req -days 3650 -in root1.csr -signkey root1.pem -out root1.crt
     * /usr/bin/openssl genrsa 2048 > root2.pem
     * /usr/bin/openssl req -new -key root2.pem -out root2.csr -subj '/CN=root2'
     * echo 4000 > root1.srl
     * echo 8000 > root2.srl
     * /usr/bin/openssl x509 -req -days 3650 -in root2.csr -CA root1.crt -CAkey root1.pem -out root2.crt
     * /usr/bin/openssl x509 -req -days 3650 -in root1.csr -CA root2.crt -CAkey root2.pem -out root1.crt
     * /usr/bin/openssl genrsa 2048 > signer.pem
     * /usr/bin/openssl req -new -key signer.pem -out signer.csr -subj '/CN=signer'
     * /usr/bin/openssl x509 -req -days 3650 -in signer.csr -CA root1.crt -CAkey root1.pem -out signer.crt
     * /usr/bin/openssl pkcs12 -inkey signer.pem -in signer.crt -export -out signer.p12 -name signer -passout pass:certloop
     * keytool -importkeystore -srckeystore signer.p12 -srcstoretype PKCS12 -destkeystore signer.jks -srcstorepass certloop -deststorepass certloop
     * cat signer.crt root1.crt root2.crt > chain.crt
     * zip -d hyts_certLoop.jar 'META-INF/*'
     * jarsigner -keystore signer.jks -certchain chain.crt -storepass certloop hyts_certLoop.jar signer
     */
    private final String certLoopJar = "hyts_certLoop.jar";

    private final String emptyEntry1 = "subfolder/internalSubset01.js";

    private final String emptyEntry2 = "svgtest.js";

    private final String emptyEntry3 = "svgunit.js";

    private static final String VALID_CHAIN_JAR = "hyts_signed_validChain.jar";

    private static final String INVALID_CHAIN_JAR = "hyts_signed_invalidChain.jar";

    private static final String AMBIGUOUS_SIGNERS_JAR = "hyts_signed_ambiguousSignerArray.jar";

    private File resources;

    // custom security manager
    SecurityManager sm = new SecurityManager() {
        final String forbidenPermissionName = "user.dir";

        public void checkPermission(Permission perm) {
            if (perm.getName().equals(forbidenPermissionName)) {
                throw new SecurityException();
            }
        }
    };

    @Override
    protected void setUp() {
        resources = Support_Resources.createTempFolder();
    }

    /**
     * java.util.jar.JarFile#JarFile(java.io.File)
     */
    public void test_ConstructorLjava_io_File() {
        try {
            JarFile jarFile = new JarFile(new File("Wrong.file"));
            fail("Should throw IOException");
        } catch (IOException e) {
            // expected
        }

        try {
            File file = Support_Resources.copyFile(resources, null, jarName);
            JarFile jarFile = new JarFile(file);
            jarFile.close();
        } catch (IOException e) {
            fail("Should not throw IOException");
        }
    }

    /**
     * java.util.jar.JarFile#JarFile(java.lang.String)
     */
    public void test_ConstructorLjava_lang_String() {
        try {
            JarFile jarFile = new JarFile("Wrong.file");
            fail("Should throw IOException");
        } catch (IOException e) {
            // expected
        }

        try {
            File file = Support_Resources.copyFile(resources, null, jarName);
            String fileName = file.getCanonicalPath();
            JarFile jarFile = new JarFile(fileName);
            jarFile.close();
        } catch (IOException e) {
            fail("Should not throw IOException");
        }
    }

    /**
     * java.util.jar.JarFile#JarFile(java.lang.String, boolean)
     */
    public void test_ConstructorLjava_lang_StringZ() {
        try {
            JarFile jarFile = new JarFile("Wrong.file", false);
            fail("Should throw IOException");
        } catch (IOException e) {
            // expected
        }

        try {
            File file = Support_Resources.copyFile(resources, null, jarName);
            String fileName = file.getCanonicalPath();
            JarFile jarFile = new JarFile(fileName, true);
            jarFile.close();
        } catch (IOException e) {
            fail("Should not throw IOException");
        }
    }

    /**
     * java.util.jar.JarFile#JarFile(java.io.File, boolean)
     */
    public void test_ConstructorLjava_io_FileZ() {
        try {
            JarFile jarFile = new JarFile(new File("Wrong.file"), true);
            fail("Should throw IOException");
        } catch (IOException e) {
            // expected
        }

        try {
            File file = Support_Resources.copyFile(resources, null, jarName);
            JarFile jarFile = new JarFile(file, false);
            jarFile.close();
        } catch (IOException e) {
            fail("Should not throw IOException");
        }
    }

    /**
     * java.util.jar.JarFile#JarFile(java.io.File, boolean, int)
     */
    public void test_ConstructorLjava_io_FileZI() {
        try {
            JarFile jarFile = new JarFile(new File("Wrong.file"), true,
                    ZipFile.OPEN_READ);
            fail("Should throw IOException");
        } catch (IOException e) {
            // expected
        }

        try {
            File file = Support_Resources.copyFile(resources, null, jarName);
            JarFile jarFile = new JarFile(file, false, ZipFile.OPEN_READ);
            jarFile.close();
        } catch (IOException e) {
            fail("Should not throw IOException");
        }

        try {
            File file = Support_Resources.copyFile(resources, null, jarName);
            JarFile jarFile = new JarFile(file, false,
                    ZipFile.OPEN_READ | ZipFile.OPEN_DELETE + 33);
            fail("Should throw IllegalArgumentException");
        } catch (IOException e) {
            fail("Should not throw IOException");
        } catch (IllegalArgumentException e) {
            // expected
        }
    }

    /**
     * Constructs JarFile object.
     *
     * java.util.jar.JarFile#JarFile(java.io.File)
     * java.util.jar.JarFile#JarFile(java.lang.String)
     */
    public void testConstructor_file() throws IOException {
        File f = Support_Resources.copyFile(resources, null, jarName);
        try (JarFile jarFile = new JarFile(f)) {
            assertTrue(jarFile.getEntry(entryName).getName().equals(entryName));
        }

        try (JarFile jarFile = new JarFile(f.getPath())) {
            assertTrue(jarFile.getEntry(entryName).getName().equals(entryName));
        }
    }

    /**
     * java.util.jar.JarFile#entries()
     */
    public void test_entries() throws Exception {
        /*
         * Note only (and all of) the following should be contained in the file
         * META-INF/ META-INF/MANIFEST.MF foo/ foo/bar/ foo/bar/A.class Blah.txt
         */
        File file = Support_Resources.copyFile(resources, null, jarName);
        JarFile jarFile = new JarFile(file);
        Enumeration<JarEntry> e = jarFile.entries();
        int i;
        for (i = 0; e.hasMoreElements(); i++) {
            e.nextElement();
        }
        assertEquals(jarFile.size(), i);
        jarFile.close();
        assertEquals(6, i);
    }

    /**
     * @throws IOException
     * java.util.jar.JarFile#getJarEntry(java.lang.String)
     */
    public void test_getEntryLjava_lang_String() throws IOException {
        try {
            File file = Support_Resources.copyFile(resources, null, jarName);
            JarFile jarFile = new JarFile(file);
            assertEquals("Error in returned entry", 311, jarFile.getEntry(
                    entryName).getSize());
            jarFile.close();
        } catch (Exception e) {
            fail("Exception during test: " + e.toString());
        }

        File file = Support_Resources.copyFile(resources, null, jarName);
        JarFile jarFile = new JarFile(file);
        Enumeration<JarEntry> enumeration = jarFile.entries();
        assertTrue(enumeration.hasMoreElements());
        while (enumeration.hasMoreElements()) {
            JarEntry je = enumeration.nextElement();
            jarFile.getEntry(je.getName());
        }

        enumeration = jarFile.entries();
        assertTrue(enumeration.hasMoreElements());
        JarEntry je = enumeration.nextElement();
        try {
            jarFile.close();
            jarFile.getEntry(je.getName());
            // fail("IllegalStateException expected.");
        } catch (IllegalStateException ee) { // Per documentation exception
            // may be thrown.
            // expected
        }
    }

    /**
     * @throws IOException
     * java.util.jar.JarFile#getJarEntry(java.lang.String)
     */
    public void test_getJarEntryLjava_lang_String() throws IOException {
        try {
            File file = Support_Resources.copyFile(resources, null, jarName);
            JarFile jarFile = new JarFile(file);
            assertEquals("Error in returned entry", 311, jarFile.getJarEntry(
                    entryName).getSize());
            jarFile.close();
        } catch (Exception e) {
            fail("Exception during test: " + e.toString());
        }

        File file = Support_Resources.copyFile(resources, null, jarName);
        JarFile jarFile = new JarFile(file);
        Enumeration<JarEntry> enumeration = jarFile.entries();
        assertTrue(enumeration.hasMoreElements());
        while (enumeration.hasMoreElements()) {
            JarEntry je = enumeration.nextElement();
            jarFile.getJarEntry(je.getName());
        }

        enumeration = jarFile.entries();
        assertTrue(enumeration.hasMoreElements());
        JarEntry je = enumeration.nextElement();
        try {
            jarFile.close();
            jarFile.getJarEntry(je.getName());
            // fail("IllegalStateException expected.");
        } catch (IllegalStateException ee) { // Per documentation exception
            // may be thrown.
            // expected
        }
    }

    /**
     * java.util.jar.JarFile#getManifest()
     */
    public void test_getManifest() {
        // Test for method java.util.jar.Manifest
        // java.util.jar.JarFile.getManifest()
        try {
            File file = Support_Resources.copyFile(resources, null, jarName);
            JarFile jarFile = new JarFile(file);
            assertNotNull("Error--Manifest not returned", jarFile.getManifest());
            jarFile.close();
        } catch (Exception e) {
            fail("Exception during 1st test: " + e.toString());
        }
        try {
            File file = Support_Resources.copyFile(resources, null, jarName2);
            JarFile jarFile = new JarFile(file);
            assertNull("Error--should have returned null", jarFile
                    .getManifest());
            jarFile.close();
        } catch (Exception e) {
            fail("Exception during 2nd test: " + e.toString());
        }

        try {
            // jarName3 was created using the following test
            File file = Support_Resources.copyFile(resources, null, jarName3);
            JarFile jarFile = new JarFile(file);
            assertNotNull("Should find manifest without verifying", jarFile
                    .getManifest());
            jarFile.close();
        } catch (Exception e) {
            fail("Exception during 3rd test: " + e.toString());
        }

        try {
            // this is used to create jarName3 used in the previous test
            Manifest manifest = new Manifest();
            Attributes attributes = manifest.getMainAttributes();
            attributes.put(new Attributes.Name("Manifest-Version"), "1.0");
            ByteArrayOutputStream manOut = new ByteArrayOutputStream();
            manifest.write(manOut);
            byte[] manBytes = manOut.toByteArray();
            File file = File.createTempFile("hyts_manifest1", ".jar");
            JarOutputStream jarOut = new JarOutputStream(new FileOutputStream(
                    file.getAbsolutePath()));
            ZipEntry entry = new ZipEntry("META-INF/");
            entry.setSize(0);
            jarOut.putNextEntry(entry);
            entry = new ZipEntry(JarFile.MANIFEST_NAME);
            entry.setSize(manBytes.length);
            jarOut.putNextEntry(entry);
            jarOut.write(manBytes);
            entry = new ZipEntry("myfile");
            entry.setSize(1);
            jarOut.putNextEntry(entry);
            jarOut.write(65);
            jarOut.close();
            JarFile jar = new JarFile(file.getAbsolutePath(), false);
            assertNotNull("Should find manifest without verifying", jar
                    .getManifest());
            jar.close();
            file.delete();
        } catch (IOException e) {
            fail("IOException 3");
        }
        try {
            File file = Support_Resources.copyFile(resources, null, jarName2);
            JarFile jF = new JarFile(file);
            jF.close();
            jF.getManifest();
            fail("FAILED: expected IllegalStateException");
        } catch (IllegalStateException ise) {
            // expected;
        } catch (Exception e) {
            fail("Exception during 4th test: " + e.toString());
        }

        File file = Support_Resources.copyFile(resources, null, "Broken_manifest.jar");
        JarFile jf = null;
        try {
            jf = new JarFile(file);
            jf.getManifest();
            fail("IOException expected.");
        } catch (IOException e) {
            // expected.
        } finally {
            IoUtils.closeQuietly(jf);
        }
    }

    /**
     * java.util.jar.JarFile#getInputStream(java.util.zip.ZipEntry)
     */
    // This test doesn't pass on RI. If entry size is set up incorrectly,
    // SecurityException is thrown. But SecurityException is thrown on RI only
    // if jar file is signed incorrectly.
    public void test_getInputStreamLjava_util_jar_JarEntry_subtest0() throws Exception {
        File signedFile = null;
        try {
            signedFile = Support_Resources.copyFile(resources, null, jarName4);
        } catch (Exception e) {
            fail("Failed to create local file 2: " + e);
        }

        try (JarFile jar = new JarFile(signedFile)) {
            JarEntry entry = new JarEntry(entryName3);
            InputStream in = jar.getInputStream(entry);
            in.read();
        } catch (Exception e) {
            fail("Exception during test 3: " + e);
        }

        try (JarFile jar = new JarFile(signedFile)) {
            JarEntry entry = new JarEntry(entryName3);
            InputStream in = jar.getInputStream(entry);
            // BEGIN Android-added
            byte[] dummy = getAllBytesFromStream(in);
            // END Android-added
            assertNull("found certificates", entry.getCertificates());
        } catch (Exception e) {
            fail("Exception during test 4: " + e);
        }

        try (JarFile jar = new JarFile(signedFile)) {
            JarEntry entry = jar.getJarEntry(entryName3);
            entry.setSize(1076);
            InputStream in = jar.getInputStream(entry);
            // BEGIN Android-added
            byte[] dummy = getAllBytesFromStream(in);
            // END Android-added
            fail("SecurityException should be thrown.");
        } catch (SecurityException e) {
            // expected
        } catch (Exception e) {
            fail("Exception during test 5: " + e);
        }

        try {
            signedFile = Support_Resources.copyFile(resources, null, jarName5);
        } catch (Exception e) {
            fail("Failed to create local file 5: " + e);
        }

        try (JarFile jar = new JarFile(signedFile)) {
            JarEntry entry = new JarEntry(entryName3);
            InputStream in = jar.getInputStream(entry);
            fail("SecurityException should be thrown.");
        } catch (SecurityException e) {
            // expected
        } catch (Exception e) {
            fail("Exception during test 5: " + e);
        }

        // SHA1 digest, SHA256withRSA signed JAR
        checkSignedJar(jarName6);

        // SHA-256 digest, SHA256withRSA signed JAR
        checkSignedJar(jarName7);

        // SHA-512 digest, SHA512withECDSA signed JAR
        checkSignedJar(jarName8);

        // JAR with a signature that has PKCS#7 Authenticated Attributes
        checkSignedJar(authAttrsJar);

        // JAR with certificates that loop
        checkSignedJar(certLoopJar, 3);
    }

    /**
     * This test uses a jar file signed with an algorithm that has its own OID
     * that is valid as a signature type. SHA256withECDSA is an algorithm that
     * isn't combined as DigestAlgorithm + "with" + DigestEncryptionAlgorithm
     * like RSAEncryption needs to be.
     */
    public void testJarFile_Signed_Valid_DigestEncryptionAlgorithm() throws Exception {
        checkSignedJar(jarName9);
    }

    /**
     * Checks that a JAR is signed correctly with a signature length of 1.
     */
    private void checkSignedJar(String jarName) throws Exception {
        checkSignedJar(jarName, 1);
    }

    /**
     * Checks that a JAR is signed correctly with a signature length of sigLength.
     */
    private void checkSignedJar(String jarName, final int sigLength) throws Exception {
        File file = Support_Resources.copyFile(resources, null, jarName);
        assertFirstSignedEntryCertificateLength(file, sigLength);
    }

    /**
     * Opens the specified File as a verified JarFile and iterates through the entries, checking the
     * certificates length is as expected for the first entry found that return a non-null /
     * non-empty array from {@link JarEntry#getCertificates()}. Fails if no entry can be found with
     * certificates.
     */
    private static void assertFirstSignedEntryCertificateLength(File file, int expectedCertsLength)
            throws IOException {
        try (JarFile jarFile = new JarFile(file, true)) {
            Enumeration<JarEntry> e = jarFile.entries();
            while (e.hasMoreElements()) {
                JarEntry entry = e.nextElement();
                InputStream is = jarFile.getInputStream(entry);
                is.skip(100000);
                is.close();
                Certificate[] certs = entry.getCertificates();
                if (certs != null && certs.length > 0) {
                    assertEquals(expectedCertsLength, certs.length);
                    return;
                }
            }
            fail("No certificates found during signed jar test for jar \"" + file + "\"");
        }
    }

    private static class Results {
        public Certificate[] certificates;
        public CodeSigner[] signers;
    }

    private Results getSignedJarCerts(String jarName) throws Exception {
        File file = Support_Resources.copyFile(resources, null, jarName);
        Results results = new Results();

        JarFile jarFile = new JarFile(file, true, ZipFile.OPEN_READ);
        try {

            Enumeration<JarEntry> e = jarFile.entries();
            while (e.hasMoreElements()) {
                JarEntry entry = e.nextElement();
                InputStream is = jarFile.getInputStream(entry);
                // Skip bytes because we have to read the entire file for it to read signatures.
                is.skip(entry.getSize());
                is.close();
                Certificate[] certs = entry.getCertificates();
                CodeSigner[] signers = entry.getCodeSigners();
                if (certs != null && certs.length > 0) {
                    results.certificates = certs;
                    results.signers = signers;
                    break;
                }
            }
        } finally {
            jarFile.close();
        }

        return results;
    }

    public void testJarFile_Signed_ValidChain() throws Exception {
        Results result = getSignedJarCerts(VALID_CHAIN_JAR);
        assertNotNull(result);
        assertEquals(Arrays.deepToString(result.certificates), 3, result.certificates.length);
        assertEquals(Arrays.deepToString(result.signers), 1, result.signers.length);
        assertEquals(3, result.signers[0].getSignerCertPath().getCertificates().size());
        assertEquals("CN=fake-chain", ((X509Certificate) result.certificates[0]).getSubjectDN().toString());
        assertEquals("CN=intermediate1", ((X509Certificate) result.certificates[1]).getSubjectDN().toString());
        assertEquals("CN=root1", ((X509Certificate) result.certificates[2]).getSubjectDN().toString());
    }

    public void testJarFile_Signed_InvalidChain() throws Exception {
        Results result = getSignedJarCerts(INVALID_CHAIN_JAR);
        assertNotNull(result);
        assertEquals(Arrays.deepToString(result.certificates), 3, result.certificates.length);
        assertEquals(Arrays.deepToString(result.signers), 1, result.signers.length);
        assertEquals(3, result.signers[0].getSignerCertPath().getCertificates().size());
        assertEquals("CN=fake-chain", ((X509Certificate) result.certificates[0]).getSubjectDN().toString());
        assertEquals("CN=intermediate1", ((X509Certificate) result.certificates[1]).getSubjectDN().toString());
        assertEquals("CN=root1", ((X509Certificate) result.certificates[2]).getSubjectDN().toString());
    }

    public void testJarFile_Signed_AmbiguousSigners() throws Exception {
        Results result = getSignedJarCerts(AMBIGUOUS_SIGNERS_JAR);
        assertNotNull(result);
        assertEquals(Arrays.deepToString(result.certificates), 2, result.certificates.length);
        assertEquals(Arrays.deepToString(result.signers), 2, result.signers.length);
        assertEquals(1, result.signers[0].getSignerCertPath().getCertificates().size());
        assertEquals(1, result.signers[1].getSignerCertPath().getCertificates().size());
    }

    /*
     * The jar created by 1.4 which does not provide a
     * algorithm-Digest-Manifest-Main-Attributes entry in .SF file.
     */
    public void test_Jar_created_before_java_5() throws IOException {
        String modifiedJarName = "Created_by_1_4.jar";
        File file = Support_Resources.copyFile(resources, null, modifiedJarName);
        try (JarFile jarFile = new JarFile(file, true)) {
            Enumeration<JarEntry> entries = jarFile.entries();
            while (entries.hasMoreElements()) {
                ZipEntry zipEntry = entries.nextElement();
                jarFile.getInputStream(zipEntry);
            }
        }
    }

    /* The jar is intact, then everything is all right. */
    public void test_JarFile_Integrate_Jar() throws IOException {
        String modifiedJarName = "Integrate.jar";
        File file = Support_Resources.copyFile(resources, null, modifiedJarName);
        try (JarFile jarFile = new JarFile(file, true)) {
            Enumeration<JarEntry> entries = jarFile.entries();
            while (entries.hasMoreElements()) {
                ZipEntry zipEntry = entries.nextElement();
                jarFile.getInputStream(zipEntry).skip(Long.MAX_VALUE);
            }
        }
    }

    /**
     * The jar is intact, but the entry object is modified.
     */
    public void testJarVerificationModifiedEntry() throws IOException {
        File f = Support_Resources.copyFile(resources, null, integrateJar);

        try (JarFile jarFile = new JarFile(f)) {
            ZipEntry zipEntry = jarFile.getJarEntry(integrateJarEntry);
            zipEntry.setSize(zipEntry.getSize() + 1);
            jarFile.getInputStream(zipEntry).skip(Long.MAX_VALUE);
        }

        try (JarFile jarFile = new JarFile(f)) {
            ZipEntry zipEntry = jarFile.getJarEntry(integrateJarEntry);
            zipEntry.setSize(zipEntry.getSize() - 1);
            try {
                //jarFile.getInputStream(zipEntry).skip(Long.MAX_VALUE);
                jarFile.getInputStream(zipEntry).read(new byte[5000], 0, 5000);
                fail("SecurityException expected");
            } catch (SecurityException e) {
                // desired
            }
        }
    }

    /*
     * If another entry is inserted into Manifest, no security exception will be
     * thrown out.
     */
    public void test_JarFile_InsertEntry_in_Manifest_Jar() throws IOException {
        String modifiedJarName = "Inserted_Entry_Manifest.jar";
        File file = Support_Resources.copyFile(resources, null, modifiedJarName);
        try (JarFile jarFile = new JarFile(file, true)) {
            Enumeration<JarEntry> entries = jarFile.entries();
            int count = 0;
            while (entries.hasMoreElements()) {

                ZipEntry zipEntry = entries.nextElement();
                jarFile.getInputStream(zipEntry);
                count++;
            }
            assertEquals(5, count);
        }
    }

    /*
     * If another entry is inserted into Manifest, no security exception will be
     * thrown out.
     */
    public void test_Inserted_Entry_Manifest_with_DigestCode()
            throws IOException {
        String modifiedJarName = "Inserted_Entry_Manifest_with_DigestCode.jar";
        File file = Support_Resources.copyFile(resources, null, modifiedJarName);
        try (JarFile jarFile = new JarFile(file, true)) {
            Enumeration<JarEntry> entries = jarFile.entries();
            int count = 0;
            while (entries.hasMoreElements()) {
                ZipEntry zipEntry = entries.nextElement();
                jarFile.getInputStream(zipEntry);
                count++;
            }
            assertEquals(5, count);
        }
    }

    /*
     * The content of Test.class is modified, jarFile.getInputStream will not
     * throw security Exception, but it will anytime before the inputStream got
     * from getInputStream method has been read to end.
     */
    public void test_JarFile_Modified_Class() throws IOException {
        String modifiedJarName = "Modified_Class.jar";
        File file = Support_Resources.copyFile(resources, null, modifiedJarName);
        try (JarFile jarFile = new JarFile(file, true)) {
            Enumeration<JarEntry> entries = jarFile.entries();
            while (entries.hasMoreElements()) {
                ZipEntry zipEntry = entries.nextElement();
                jarFile.getInputStream(zipEntry);
            }
            /* The content of Test.class has been tampered. */
            ZipEntry zipEntry = jarFile.getEntry("Test.class");
            InputStream in = jarFile.getInputStream(zipEntry);
            byte[] buffer = new byte[1024];
            try {
                while (in.available() > 0) {
                    in.read(buffer);
                }
                fail("SecurityException expected");
            } catch (SecurityException e) {
                // desired
            }
        }
    }

    /*
     * In the Modified.jar, the main attributes of META-INF/MANIFEST.MF is
     * tampered manually. Hence the RI 5.0 JarFile.getInputStream of any
     * JarEntry will throw security exception.
     */
    public void test_JarFile_Modified_Manifest_MainAttributes()
            throws IOException {
        String modifiedJarName = "Modified_Manifest_MainAttributes.jar";
        File file = Support_Resources.copyFile(resources, null, modifiedJarName);
        try (JarFile jarFile = new JarFile(file, true)) {
            Enumeration<JarEntry> entries = jarFile.entries();
            while (entries.hasMoreElements()) {
                ZipEntry zipEntry = entries.nextElement();
                try {
                    jarFile.getInputStream(zipEntry);
                    fail("SecurityException expected");
                } catch (SecurityException e) {
                    // desired
                }
            }
        }
    }

    /*
     * It is all right in our original JarFile. If the Entry Attributes, for
     * example Test.class in our jar, the jarFile.getInputStream will throw
     * Security Exception.
     */
    public void test_JarFile_Modified_Manifest_EntryAttributes()
            throws IOException {
        String modifiedJarName = "Modified_Manifest_EntryAttributes.jar";
        File file = Support_Resources.copyFile(resources, null, modifiedJarName);
        try (JarFile jarFile = new JarFile(file, true)) {
            Enumeration<JarEntry> entries = jarFile.entries();
            while (entries.hasMoreElements()) {
                ZipEntry zipEntry = entries.nextElement();
                try {
                    jarFile.getInputStream(zipEntry);
                    fail("should throw Security Exception");
                } catch (SecurityException e) {
                    // desired
                }
            }
        }
    }

    /*
     * If the content of the .SA file is modified, no matter what it resides,
     * JarFile.getInputStream of any JarEntry will throw Security Exception.
     */
    public void test_JarFile_Modified_SF_EntryAttributes() throws IOException {
        String modifiedJarName = "Modified_SF_EntryAttributes.jar";
        File file = Support_Resources.copyFile(resources, null, modifiedJarName);
        try (JarFile jarFile = new JarFile(file, true)) {
            Enumeration<JarEntry> entries = jarFile.entries();
            while (entries.hasMoreElements()) {
                ZipEntry zipEntry = entries.nextElement();
                try {
                    jarFile.getInputStream(zipEntry);
                    fail("should throw Security Exception");
                } catch (SecurityException e) {
                    // desired
                }
            }
        }
    }

    public void test_close() throws IOException {
        String modifiedJarName = "Modified_SF_EntryAttributes.jar";
        File file = Support_Resources.copyFile(resources, null, modifiedJarName);
        JarFile jarFile = new JarFile(file, true);
        Enumeration<JarEntry> entries = jarFile.entries();

        jarFile.close();
        jarFile.close();

        // Can not check IOException
    }

    /**
     * @throws IOException
     * java.util.jar.JarFile#getInputStream(java.util.zip.ZipEntry)
     */
    public void test_getInputStreamLjava_util_jar_JarEntry() throws IOException {
        File localFile = null;
        try {
            localFile = Support_Resources.copyFile(resources, null, jarName);
        } catch (Exception e) {
            fail("Failed to create local file: " + e);
        }

        byte[] b = new byte[1024];
        try (JarFile jf = new JarFile(localFile)) {
            java.io.InputStream is = jf.getInputStream(jf.getEntry(entryName));
            assertTrue("Returned invalid stream", is.available() > 0);
            int r = is.read(b, 0, 1024);
            is.close();
            StringBuffer sb = new StringBuffer(r);
            for (int i = 0; i < r; i++) {
                sb.append((char) (b[i] & 0xff));
            }
            String contents = sb.toString();
            assertTrue("Incorrect stream read", contents.indexOf("bar") > 0);
        } catch (Exception e) {
            fail("Exception during test: " + e.toString());
        }

        try (JarFile jf = new JarFile(localFile)) {
            InputStream in = jf.getInputStream(new JarEntry("invalid"));
            assertNull("Got stream for non-existent entry", in);
        } catch (Exception e) {
            fail("Exception during test 2: " + e);
        }

        {
            File signedFile = Support_Resources.copyFile(resources, null, jarName);
            try (JarFile jf = new JarFile(signedFile)) {
                JarEntry jre = new JarEntry("foo/bar/A.class");
                jf.getInputStream(jre);
                // InputStream returned in any way, exception can be thrown in case
                // of reading from this stream only.
                // fail("Should throw ZipException");
            } catch (ZipException ee) {
                // expected
            }
        }

        {
            File signedFile = Support_Resources.copyFile(resources, null, jarName);
            try {
                JarFile jf = new JarFile(signedFile);
                JarEntry jre = new JarEntry("foo/bar/A.class");
                jf.close();
                jf.getInputStream(jre);
                // InputStream returned in any way, exception can be thrown in case
                // of reading from this stream only.
                // The same for IOException
                fail("Should throw IllegalStateException");
            } catch (IllegalStateException ee) {
                // expected
            }
        }
    }

    /**
     * The jar is intact, but the entry object is modified.
     */
    // Regression test for issue introduced by HARMONY-4569: signed archives containing files with size 0 could not get verified.
    public void testJarVerificationEmptyEntry() throws IOException {
        File f = Support_Resources.copyFile(resources, null, emptyEntryJar);

        try (JarFile jarFile = new JarFile(f)) {

            ZipEntry zipEntry = jarFile.getJarEntry(emptyEntry1);
            int res = jarFile.getInputStream(zipEntry).read(new byte[100], 0, 100);
            assertEquals("Wrong length of empty jar entry", -1, res);

            zipEntry = jarFile.getJarEntry(emptyEntry2);
            res = jarFile.getInputStream(zipEntry).read(new byte[100], 0, 100);
            assertEquals("Wrong length of empty jar entry", -1, res);

            zipEntry = jarFile.getJarEntry(emptyEntry3);
            res = jarFile.getInputStream(zipEntry).read();
            assertEquals("Wrong length of empty jar entry", -1, res);
        }
    }

    public void testJarFile_BadSignatureProvider_Success() throws Exception {
        Security.insertProviderAt(new JarFileBadProvider(), 1);
        try {
            // Needs a JAR with "RSA" as digest encryption algorithm
            checkSignedJar(jarName6);
        } finally {
            Security.removeProvider(JarFileBadProvider.NAME);
        }
    }

    public static class JarFileBadProvider extends Provider {
        public static final String NAME = "JarFileBadProvider";

        public JarFileBadProvider() {
            super(NAME, 1.0, "Bad provider for JarFileTest");

            put("Signature.RSA", NotReallyASignature.class.getName());
        }

        /**
         * This should never be instantiated, so everything throws an exception.
         */
        public static class NotReallyASignature extends SignatureSpi {
            @Override
            protected void engineInitVerify(PublicKey publicKey) throws InvalidKeyException {
                fail("Should not call this provider");
            }

            @Override
            protected void engineInitSign(PrivateKey privateKey) throws InvalidKeyException {
                fail("Should not call this provider");
            }

            @Override
            protected void engineUpdate(byte b) throws SignatureException {
                fail("Should not call this provider");
            }

            @Override
            protected void engineUpdate(byte[] b, int off, int len) throws SignatureException {
                fail("Should not call this provider");
            }

            @Override
            protected byte[] engineSign() throws SignatureException {
                fail("Should not call this provider");
                return null;
            }

            @Override
            protected boolean engineVerify(byte[] sigBytes) throws SignatureException {
                fail("Should not call this provider");
                return false;
            }

            @Override
            protected void engineSetParameter(String param, Object value)
                    throws InvalidParameterException {
                fail("Should not call this provider");
            }

            @Override
            protected Object engineGetParameter(String param) throws InvalidParameterException {
                fail("Should not call this provider");
                return null;
            }
        }
    }

    /**
     * java.util.jar.JarFile#stream()
     */
    public void test_stream() throws Exception {
        /*
         * Note only (and all of) the following should be contained in the file
         * META-INF/ META-INF/MANIFEST.MF Blah.txt  foo/ foo/bar/ foo/bar/A.class
         */
        File file = Support_Resources.copyFile(resources, null, jarName);
        JarFile jarFile = new JarFile(file);

        final List<String> names = new ArrayList<>();
        jarFile.stream().forEach((ZipEntry entry) -> names.add(entry.getName()));
        assertEquals(Arrays.asList("META-INF/", "META-INF/MANIFEST.MF", "Blah.txt", "foo/", "foo/bar/",
                                   "foo/bar/A.class"), names);
        jarFile.close();
    }


    /**
     * hyts_metainf.jar contains an additional entry in META-INF (META-INF/bad_checksum.txt),
     * that has been altered since jar signing - we expect to detect a mismatching digest.
     */
    public void test_metainf_verification() throws Exception {
        String jarFilename = "hyts_metainf.jar";
        File file = Support_Resources.copyFile(resources, null, jarFilename);
        try (JarFile jarFile = new JarFile(file)) {

            JarEntry jre = new JarEntry("META-INF/bad_checksum.txt");
            InputStream in = jarFile.getInputStream(jre);

            byte[] buffer = new byte[1024];
            try {
                while (in.available() > 0) {
                    in.read(buffer);
                }
                fail("SecurityException expected");
            } catch (SecurityException expected) {}
        }
    }
}
