Mercurial > hg > release > icedtea-web-1.2
changeset 302:f1468696eda3
sun.misc.BASE64Encoder replaced by internal implementation
author | Jiri Vanek <jvanek@redhat.com> |
---|---|
date | Mon, 17 Oct 2011 18:41:42 +0200 |
parents | 2a7aa789f554 |
children | 9ecf7c8edfe0 |
files | ChangeLog configure.ac netx/net/sourceforge/jnlp/security/CertificateUtils.java netx/net/sourceforge/jnlp/util/replacements/BASE64Encoder.java netx/net/sourceforge/jnlp/util/replacements/CharacterEncoder.java tests/netx/unit/net/sourceforge/jnlp/util/replacements/BASE64EncoderTest.java |
diffstat | 6 files changed, 607 insertions(+), 3 deletions(-) [+] |
line wrap: on
line diff
--- a/ChangeLog Mon Oct 03 15:28:10 2011 +0200 +++ b/ChangeLog Mon Oct 17 18:41:42 2011 +0200 @@ -1,3 +1,17 @@ +2011-10-17 Jiri Vanek <jvanek@redhat.com> + + PR564: NetX depends on sun.misc.BASE64Encoder + * configure.ac: removed IT564 comment, removed check for sun.misc.BASE64Encoder + * netx/net/sourceforge/jnlp/security/CertificateUtils.java : sun.misc.BASE64Encoder; + replaced (just changed import) by internal implementation from + net.sourceforge.jnlp.util.replacements.BASE64Encoder; + * netx/net/sourceforge/jnlp/util/replacements/BASE64Encoder.java: + * netx/net/sourceforge/jnlp/util/replacements/CharacterEncoder.java: + New files, internal implementation of BASE64Encoder, copied from OpenJDK + * tests/netx/unit/net/sourceforge/jnlp/util/replacements/BASE64EncoderTest.java + New file, to test internal base64encoder implementation + + 2011-10-03 Jiri Vanek <jvanek@redhat.com> * tests/jnlp_tests/signed/ReadPropertiesBySignedHack/resources/ReadPropertiesBySignedHack.jnlp
--- a/configure.ac Mon Oct 03 15:28:10 2011 +0200 +++ b/configure.ac Mon Oct 17 18:41:42 2011 +0200 @@ -53,7 +53,6 @@ dnl PR46074 (gcc) - Missing java.net cookie code required by IcedTea plugin dnl IT563 - NetX uses sun.security code -dnl IT564 - NetX depends on sun.misc.BASE64Encoder dnl IT605 - NetX depends on sun.misc.HexDumpEncoder dnl IT570 - NetX depends on sun.applet.AppletViewPanel dnl IT571 - NetX depends on com.sun.net.ssl.internal.ssl.X509ExtendedTrustManager.java @@ -70,7 +69,6 @@ IT_CHECK_FOR_CLASS(SUN_SECURITY_UTIL_SECURITYCONSTANTS, [sun.security.util.SecurityConstants]) IT_CHECK_FOR_CLASS(SUN_SECURITY_UTIL_HOSTNAMECHECKER, [sun.security.util.HostnameChecker]) IT_CHECK_FOR_CLASS(SUN_SECURITY_X509_X500NAME, [sun.security.x509.X500Name]) -IT_CHECK_FOR_CLASS(SUN_MISC_BASE64ENCODER, [sun.misc.BASE64Encoder]) IT_CHECK_FOR_CLASS(SUN_MISC_HEXDUMPENCODER, [sun.misc.HexDumpEncoder]) IT_CHECK_FOR_CLASS(SUN_SECURITY_VALIDATOR_VALIDATOREXCEPTION, [sun.security.validator.ValidatorException]) IT_CHECK_FOR_CLASS(COM_SUN_NET_SSL_INTERNAL_SSL_X509EXTENDEDTRUSTMANAGER,
--- a/netx/net/sourceforge/jnlp/security/CertificateUtils.java Mon Oct 03 15:28:10 2011 +0200 +++ b/netx/net/sourceforge/jnlp/security/CertificateUtils.java Mon Oct 17 18:41:42 2011 +0200 @@ -60,7 +60,7 @@ import java.util.Random; import net.sourceforge.jnlp.runtime.JNLPRuntime; -import sun.misc.BASE64Encoder; +import net.sourceforge.jnlp.util.replacements.BASE64Encoder; import sun.security.provider.X509Factory; /**
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/netx/net/sourceforge/jnlp/util/replacements/BASE64Encoder.java Mon Oct 17 18:41:42 2011 +0200 @@ -0,0 +1,110 @@ +/* + * Copyright (c) 1995, 1997, 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. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * 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. + */ +package net.sourceforge.jnlp.util.replacements; + +import java.io.OutputStream; +import java.io.IOException; + +/** + * This class implements a BASE64 Character encoder as specified in RFC1521. + * This RFC is part of the MIME specification as published by the Internet + * Engineering Task Force (IETF). Unlike some other encoding schemes there + * is nothing in this encoding that indicates + * where a buffer starts or ends. + * + * This means that the encoded text will simply start with the first line + * of encoded text and end with the last line of encoded text. + * + * @author Chuck McManis + * @see CharacterEncoder + * @see BASE64Decoder + */ + +public class BASE64Encoder extends CharacterEncoder { + + /** this class encodes three bytes per atom. */ + protected int bytesPerAtom() { + return (3); + } + + /** + * this class encodes 57 bytes per line. This results in a maximum + * of 57/3 * 4 or 76 characters per output line. Not counting the + * line termination. + */ + protected int bytesPerLine() { + return (57); + } + + /** This array maps the characters to their 6 bit values */ + private final static char pem_array[] = { + // 0 1 2 3 4 5 6 7 + 'A','B','C','D','E','F','G','H', // 0 + 'I','J','K','L','M','N','O','P', // 1 + 'Q','R','S','T','U','V','W','X', // 2 + 'Y','Z','a','b','c','d','e','f', // 3 + 'g','h','i','j','k','l','m','n', // 4 + 'o','p','q','r','s','t','u','v', // 5 + 'w','x','y','z','0','1','2','3', // 6 + '4','5','6','7','8','9','+','/' // 7 + }; + + /** + * encodeAtom - Take three bytes of input and encode it as 4 + * printable characters. Note that if the length in len is less + * than three is encodes either one or two '=' signs to indicate + * padding characters. + */ + protected void encodeAtom(OutputStream outStream, byte data[], int offset, int len) + throws IOException { + byte a, b, c; + + if (len == 1) { + a = data[offset]; + b = 0; + c = 0; + outStream.write(pem_array[(a >>> 2) & 0x3F]); + outStream.write(pem_array[((a << 4) & 0x30) + ((b >>> 4) & 0xf)]); + outStream.write('='); + outStream.write('='); + } else if (len == 2) { + a = data[offset]; + b = data[offset+1]; + c = 0; + outStream.write(pem_array[(a >>> 2) & 0x3F]); + outStream.write(pem_array[((a << 4) & 0x30) + ((b >>> 4) & 0xf)]); + outStream.write(pem_array[((b << 2) & 0x3c) + ((c >>> 6) & 0x3)]); + outStream.write('='); + } else { + a = data[offset]; + b = data[offset+1]; + c = data[offset+2]; + outStream.write(pem_array[(a >>> 2) & 0x3F]); + outStream.write(pem_array[((a << 4) & 0x30) + ((b >>> 4) & 0xf)]); + outStream.write(pem_array[((b << 2) & 0x3c) + ((c >>> 6) & 0x3)]); + outStream.write(pem_array[c & 0x3F]); + } + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/netx/net/sourceforge/jnlp/util/replacements/CharacterEncoder.java Mon Oct 17 18:41:42 2011 +0200 @@ -0,0 +1,354 @@ +/* + * Copyright (c) 1995, 2005, 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. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * 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. + */ + +package net.sourceforge.jnlp.util.replacements; + +import java.io.InputStream; +import java.io.ByteArrayInputStream; +import java.io.OutputStream; +import java.io.ByteArrayOutputStream; +import java.io.PrintStream; +import java.io.IOException; +import java.nio.ByteBuffer; + + +/** + * This class defines the encoding half of character encoders. + * A character encoder is an algorithim for transforming 8 bit binary + * data into text (generally 7 bit ASCII or 8 bit ISO-Latin-1 text) + * for transmition over text channels such as e-mail and network news. + * + * The character encoders have been structured around a central theme + * that, in general, the encoded text has the form: + * + * <pre> + * [Buffer Prefix] + * [Line Prefix][encoded data atoms][Line Suffix] + * [Buffer Suffix] + * </pre> + * + * In the CharacterEncoder and CharacterDecoder classes, one complete + * chunk of data is referred to as a <i>buffer</i>. Encoded buffers + * are all text, and decoded buffers (sometimes just referred to as + * buffers) are binary octets. + * + * To create a custom encoder, you must, at a minimum, overide three + * abstract methods in this class. + * <DL> + * <DD>bytesPerAtom which tells the encoder how many bytes to + * send to encodeAtom + * <DD>encodeAtom which encodes the bytes sent to it as text. + * <DD>bytesPerLine which tells the encoder the maximum number of + * bytes per line. + * </DL> + * + * Several useful encoders have already been written and are + * referenced in the See Also list below. + * + * @author Chuck McManis + * @see CharacterDecoder; + * @see UCEncoder + * @see UUEncoder + * @see BASE64Encoder + */ +public abstract class CharacterEncoder { + + /** Stream that understands "printing" */ + protected PrintStream pStream; + + /** Return the number of bytes per atom of encoding */ + abstract protected int bytesPerAtom(); + + /** Return the number of bytes that can be encoded per line */ + abstract protected int bytesPerLine(); + + /** + * Encode the prefix for the entire buffer. By default is simply + * opens the PrintStream for use by the other functions. + */ + protected void encodeBufferPrefix(OutputStream aStream) throws IOException { + pStream = new PrintStream(aStream); + } + + /** + * Encode the suffix for the entire buffer. + */ + protected void encodeBufferSuffix(OutputStream aStream) throws IOException { + } + + /** + * Encode the prefix that starts every output line. + */ + protected void encodeLinePrefix(OutputStream aStream, int aLength) + throws IOException { + } + + /** + * Encode the suffix that ends every output line. By default + * this method just prints a <newline> into the output stream. + */ + protected void encodeLineSuffix(OutputStream aStream) throws IOException { + pStream.println(); + } + + /** Encode one "atom" of information into characters. */ + abstract protected void encodeAtom(OutputStream aStream, byte someBytes[], + int anOffset, int aLength) throws IOException; + + /** + * This method works around the bizarre semantics of BufferedInputStream's + * read method. + */ + protected int readFully(InputStream in, byte buffer[]) + throws java.io.IOException { + for (int i = 0; i < buffer.length; i++) { + int q = in.read(); + if (q == -1) + return i; + buffer[i] = (byte)q; + } + return buffer.length; + } + + /** + * Encode bytes from the input stream, and write them as text characters + * to the output stream. This method will run until it exhausts the + * input stream, but does not print the line suffix for a final + * line that is shorter than bytesPerLine(). + */ + public void encode(InputStream inStream, OutputStream outStream) + throws IOException { + int j; + int numBytes; + byte tmpbuffer[] = new byte[bytesPerLine()]; + + encodeBufferPrefix(outStream); + + while (true) { + numBytes = readFully(inStream, tmpbuffer); + if (numBytes == 0) { + break; + } + encodeLinePrefix(outStream, numBytes); + for (j = 0; j < numBytes; j += bytesPerAtom()) { + + if ((j + bytesPerAtom()) <= numBytes) { + encodeAtom(outStream, tmpbuffer, j, bytesPerAtom()); + } else { + encodeAtom(outStream, tmpbuffer, j, (numBytes)- j); + } + } + if (numBytes < bytesPerLine()) { + break; + } else { + encodeLineSuffix(outStream); + } + } + encodeBufferSuffix(outStream); + } + + /** + * Encode the buffer in <i>aBuffer</i> and write the encoded + * result to the OutputStream <i>aStream</i>. + */ + public void encode(byte aBuffer[], OutputStream aStream) + throws IOException { + ByteArrayInputStream inStream = new ByteArrayInputStream(aBuffer); + encode(inStream, aStream); + } + + /** + * A 'streamless' version of encode that simply takes a buffer of + * bytes and returns a string containing the encoded buffer. + */ + public String encode(byte aBuffer[]) { + ByteArrayOutputStream outStream = new ByteArrayOutputStream(); + ByteArrayInputStream inStream = new ByteArrayInputStream(aBuffer); + String retVal = null; + try { + encode(inStream, outStream); + // explicit ascii->unicode conversion + retVal = outStream.toString("8859_1"); + } catch (Exception IOException) { + // This should never happen. + throw new Error("CharacterEncoder.encode internal error"); + } + return (retVal); + } + + /** + * Return a byte array from the remaining bytes in this ByteBuffer. + * <P> + * The ByteBuffer's position will be advanced to ByteBuffer's limit. + * <P> + * To avoid an extra copy, the implementation will attempt to return the + * byte array backing the ByteBuffer. If this is not possible, a + * new byte array will be created. + */ + private byte [] getBytes(ByteBuffer bb) { + /* + * This should never return a BufferOverflowException, as we're + * careful to allocate just the right amount. + */ + byte [] buf = null; + + /* + * If it has a usable backing byte buffer, use it. Use only + * if the array exactly represents the current ByteBuffer. + */ + if (bb.hasArray()) { + byte [] tmp = bb.array(); + if ((tmp.length == bb.capacity()) && + (tmp.length == bb.remaining())) { + buf = tmp; + bb.position(bb.limit()); + } + } + + if (buf == null) { + /* + * This class doesn't have a concept of encode(buf, len, off), + * so if we have a partial buffer, we must reallocate + * space. + */ + buf = new byte[bb.remaining()]; + + /* + * position() automatically updated + */ + bb.get(buf); + } + + return buf; + } + + /** + * Encode the <i>aBuffer</i> ByteBuffer and write the encoded + * result to the OutputStream <i>aStream</i>. + * <P> + * The ByteBuffer's position will be advanced to ByteBuffer's limit. + */ + public void encode(ByteBuffer aBuffer, OutputStream aStream) + throws IOException { + byte [] buf = getBytes(aBuffer); + encode(buf, aStream); + } + + /** + * A 'streamless' version of encode that simply takes a ByteBuffer + * and returns a string containing the encoded buffer. + * <P> + * The ByteBuffer's position will be advanced to ByteBuffer's limit. + */ + public String encode(ByteBuffer aBuffer) { + byte [] buf = getBytes(aBuffer); + return encode(buf); + } + + /** + * Encode bytes from the input stream, and write them as text characters + * to the output stream. This method will run until it exhausts the + * input stream. It differs from encode in that it will add the + * line at the end of a final line that is shorter than bytesPerLine(). + */ + public void encodeBuffer(InputStream inStream, OutputStream outStream) + throws IOException { + int j; + int numBytes; + byte tmpbuffer[] = new byte[bytesPerLine()]; + + encodeBufferPrefix(outStream); + + while (true) { + numBytes = readFully(inStream, tmpbuffer); + if (numBytes == 0) { + break; + } + encodeLinePrefix(outStream, numBytes); + for (j = 0; j < numBytes; j += bytesPerAtom()) { + if ((j + bytesPerAtom()) <= numBytes) { + encodeAtom(outStream, tmpbuffer, j, bytesPerAtom()); + } else { + encodeAtom(outStream, tmpbuffer, j, (numBytes)- j); + } + } + encodeLineSuffix(outStream); + if (numBytes < bytesPerLine()) { + break; + } + } + encodeBufferSuffix(outStream); + } + + /** + * Encode the buffer in <i>aBuffer</i> and write the encoded + * result to the OutputStream <i>aStream</i>. + */ + public void encodeBuffer(byte aBuffer[], OutputStream aStream) + throws IOException { + ByteArrayInputStream inStream = new ByteArrayInputStream(aBuffer); + encodeBuffer(inStream, aStream); + } + + /** + * A 'streamless' version of encode that simply takes a buffer of + * bytes and returns a string containing the encoded buffer. + */ + public String encodeBuffer(byte aBuffer[]) { + ByteArrayOutputStream outStream = new ByteArrayOutputStream(); + ByteArrayInputStream inStream = new ByteArrayInputStream(aBuffer); + try { + encodeBuffer(inStream, outStream); + } catch (Exception IOException) { + // This should never happen. + throw new Error("CharacterEncoder.encodeBuffer internal error"); + } + return (outStream.toString()); + } + + /** + * Encode the <i>aBuffer</i> ByteBuffer and write the encoded + * result to the OutputStream <i>aStream</i>. + * <P> + * The ByteBuffer's position will be advanced to ByteBuffer's limit. + */ + public void encodeBuffer(ByteBuffer aBuffer, OutputStream aStream) + throws IOException { + byte [] buf = getBytes(aBuffer); + encodeBuffer(buf, aStream); + } + + /** + * A 'streamless' version of encode that simply takes a ByteBuffer + * and returns a string containing the encoded buffer. + * <P> + * The ByteBuffer's position will be advanced to ByteBuffer's limit. + */ + public String encodeBuffer(ByteBuffer aBuffer) { + byte [] buf = getBytes(aBuffer); + return encodeBuffer(buf); + } + +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tests/netx/unit/net/sourceforge/jnlp/util/replacements/BASE64EncoderTest.java Mon Oct 17 18:41:42 2011 +0200 @@ -0,0 +1,128 @@ +/* BASE64EncoderTest.java +Copyright (C) 2011 Red Hat, Inc. + +This file is part of IcedTea. + +IcedTea is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License as published by +the Free Software Foundation, version 2. + +IcedTea 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 for more details. + +You should have received a copy of the GNU General Public License +along with IcedTea; see the file COPYING. If not, write to +the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. + */ +package net.sourceforge.jnlp.util.replacements; + +import java.io.ByteArrayOutputStream; +import java.io.OutputStream; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.util.Arrays; +import org.junit.Assert; +import org.junit.Test; + +/** Test various corner cases of the parser */ +public class BASE64EncoderTest { + + private static final String sSrc = "abcdefgHIJKLMNOPQrstuvwxyz1234567890\r\n" + + "-=+_))(**&&&^^%%$$##@@!!~{}][\":'/\\.,><\n" + + "+ěšěčřžýáíé=ů/úěřťšďňéíáč"; + private static final byte[] encoded = {89, 87, 74, 106, 90, 71, 86, 109, 90, + 48, 104, 74, 83, 107, 116, 77, 84, 85, 53, 80, 85, 70, 70, 121, 99, 51, + 82, 49, 100, 110, 100, 52, 101, 88, 111, 120, 77, 106, 77, 48, 78, 84, + 89, 51, 79, 68, 107, 119, 68, 81, 111, 116, 80, 83, 116, 102, 75, 83, + 107, 111, 75, 105, 111, 109, 74, 105, 90, 101, 88, 105, 85, 108, 74, 67, + 81, 106, 10, 73, 48, 66, 65, 73, 83, 70, 43, 101, 51, 49, 100, 87, 121, + 73, 54, 74, 121, 57, 99, 76, 105, 119, 43, 80, 65, 111, 114, 120, 74, + 118, 70, 111, 99, 83, 98, 120, 73, 51, 70, 109, 99, 87, 43, 119, 55, 51, + 68, 111, 99, 79, 116, 119, 54, 107, 57, 120, 97, 56, 118, 119, 55, 114, + 69, 109, 56, 87, 90, 120, 97, 88, 70, 111, 99, 83, 80, 10, 120, 89, 106, + 68, 113, 99, 79, 116, 119, 54, 72, 69, 106, 81, 61, 61, 10}; + + public static final String sunClassE = "sun.misc.BASE64Encoder"; + public static final String sunClassD = "sun.misc.BASE64Decoder"; + + @Test + public void testEmbededBase64Encoder() throws Exception { + final byte[] data = sSrc.getBytes("utf-8"); +// ByteArrayOutputStream out1 = new ByteArrayOutputStream(); +// sun.misc.BASE64Encoder e1 = new sun.misc.BASE64Encoder(); +// e1.encode(data, out1); +// byte[] encoded1 = out1.toByteArray(); +// System.out.println(Arrays.toString(encoded1)); + ByteArrayOutputStream out2 = new ByteArrayOutputStream(); + BASE64Encoder e2 = new BASE64Encoder(); + e2.encodeBuffer(data, out2); + byte[] encoded2 = out2.toByteArray(); + Assert.assertArrayEquals(encoded, encoded2); +// System.out.println(Arrays.toString(encoded2)); + + + + } + + @Test + /* + * This test will fail, in case taht sun.misc.BASE64Decoder will be removed from builders java + */ + public void testEmbededBase64EncoderAgainstSunOne() throws Exception { + final byte[] data = sSrc.getBytes("utf-8"); + + ByteArrayOutputStream out2 = new ByteArrayOutputStream(); + BASE64Encoder e2 = new BASE64Encoder(); + e2.encodeBuffer(data, out2); + byte[] encoded2 = out2.toByteArray(); + Object decoder = createInsatnce(sunClassD); + byte[] decoded = (byte[]) (getAndInvokeMethod(decoder, "decodeBuffer", new String(encoded, "utf-8"))); + Assert.assertArrayEquals(data, decoded); + Assert.assertEquals(sSrc, new String(decoded, "utf-8")); + + + + + } + + private static Object createInsatnce(String ofCalss) throws ClassNotFoundException, InstantiationException, IllegalAccessException { + + Class classDefinition = Class.forName(ofCalss); + return classDefinition.newInstance(); + + } + + private static Object getAndInvokeMethod(Object instance, String methodName, Object... params) throws NoSuchMethodException, IllegalAccessException, IllegalArgumentException, InvocationTargetException { + Class<?>[] cs = new Class<?>[params.length]; + for (int i = 0; i < params.length; i++) { + Object object = params[i]; + cs[i] = object.getClass(); + if (object instanceof OutputStream) { + cs[i] = OutputStream.class; + } + } + Method m = instance.getClass().getMethod(methodName, cs); + return m.invoke(instance, params); + + } +}