--- /dev/null
+/* *************************************************************************
+
+ IT Mill Toolkit
+
+ Development of Browser User Intarfaces Made Easy
+
+ Copyright (C) 2000-2006 IT Mill Ltd
+
+ *************************************************************************
+
+ This product is distributed under commercial license that can be found
+ from the product package on license/license.txt. Use of this product might
+ require purchasing a commercial license from IT Mill Ltd. For guidelines
+ on usage, see license/licensing-guidelines.html
+
+ *************************************************************************
+
+ For more information, contact:
+
+ IT Mill Ltd phone: +358 2 4802 7180
+ Ruukinkatu 2-4 fax: +358 2 4802 7181
+ 20540, Turku email: info@itmill.com
+ Finland company www: www.itmill.com
+
+ Primary source for information and releases: www.itmill.com
+
+ ********************************************************************** */
+
+package com.itmill.toolkit.service;
+
+import java.io.ByteArrayInputStream;
+import java.io.CharArrayWriter;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.UnsupportedEncodingException;
+import java.io.Writer;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+import java.security.PublicKey;
+import java.security.Signature;
+import java.security.SignatureException;
+import java.security.cert.CertificateException;
+import java.security.cert.CertificateFactory;
+import java.security.cert.X509Certificate;
+import java.util.Iterator;
+import java.util.TreeSet;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.SAXException;
+
+public class License {
+
+ /** IT Mill License Manager certificate */
+ private static String certificate = "-----BEGIN CERTIFICATE-----\n"
+ + "MIIDJjCCAuQCBEVqxNwwCwYHKoZIzjgEAwUAMHkxCzAJBgNVBAYTAkZJMRAwDgYDVQQIEwdVbmtu\n"
+ + "b3duMQ4wDAYDVQQHEwVUdXJrdTEUMBIGA1UEChMLSVQgTWlsbCBMdGQxEDAOBgNVBAsTB1Vua25v\n"
+ + "d24xIDAeBgNVBAMTF0lUIE1pbGwgTGljZW5zZSBNYW5hZ2VyMB4XDTA2MTEyNzEwNTgzNloXDTQ3\n"
+ + "MTIyMjEwNTgzNloweTELMAkGA1UEBhMCRkkxEDAOBgNVBAgTB1Vua25vd24xDjAMBgNVBAcTBVR1\n"
+ + "cmt1MRQwEgYDVQQKEwtJVCBNaWxsIEx0ZDEQMA4GA1UECxMHVW5rbm93bjEgMB4GA1UEAxMXSVQg\n"
+ + "TWlsbCBMaWNlbnNlIE1hbmFnZXIwggG3MIIBLAYHKoZIzjgEATCCAR8CgYEA/X9TgR11EilS30qc\n"
+ + "Luzk5/YRt1I870QAwx4/gLZRJmlFXUAiUftZPY1Y+r/F9bow9subVWzXgTuAHTRv8mZgt2uZUKWk\n"
+ + "n5/oBHsQIsJPu6nX/rfGG/g7V+fGqKYVDwT7g/bTxR7DAjVUE1oWkTL2dfOuK2HXKu/yIgMZndFI\n"
+ + "AccCFQCXYFCPFSMLzLKSuYKi64QL8Fgc9QKBgQD34aCF1ps93su8q1w2uFe5eZSvu/o66oL5V0wL\n"
+ + "PQeCZ1FZV4661FlP5nEHEIGAtEkWcSPoTCgWE7fPCTKMyKbhPBZ6i1R8jSjgo64eK7OmdZFuo38L\n"
+ + "+iE1YvH7YnoBJDvMpPG+qFGQiaiD3+Fa5Z8GkotmXoB7VSVkAUw7/s9JKgOBhAACgYB2wjpuZXqK\n"
+ + "Ldgw1uZRlNCON7vo4m420CSna0mhETqzW9UMFHmZfn9edD0B1dDh6NwmRIDjljf8+ODuhwZKkzl8\n"
+ + "DHUq3HPnipEsr0C3g1Dz7ZbjcvUhzsPDElpKBZhHRaoqfAfWiNxeVF2Kh2IlIMwuJ2xZeSaUH7Pj\n"
+ + "LwAkKye6dzALBgcqhkjOOAQDBQADLwAwLAIUDgvWt7ItRyZfpWNEeJ0P9yaxOwoCFC21LRtwLi1t\n"
+ + "c+yomHtX+mpxF7VO\n" + "-----END CERTIFICATE-----\n";
+
+ /** Public key that is used to check the license signature */
+ static private PublicKey publicKey;
+
+ /** Initialize public key */
+ static {
+
+ try {
+ // Get X.509 factory implementation
+ CertificateFactory x509factory = CertificateFactory
+ .getInstance("X.509");
+
+ // Decode statically linked X.509 certificate
+ X509Certificate cert = (X509Certificate) x509factory
+ .generateCertificate(new ByteArrayInputStream(certificate
+ .getBytes()));
+
+ publicKey = cert.getPublicKey();
+ } catch (CertificateException e) {
+ e.printStackTrace();
+ }
+ }
+
+ private static Document licenseXML = null;
+
+ /** Has the license already been verified */
+ private static boolean isVerified = false;
+
+ public static void readLicenseFile(InputStream is) throws SAXException,
+ IOException {
+
+ // Once the license has been read, it stays
+ if (licenseXML != null)
+ return;
+
+ // Parse XML
+ DocumentBuilder db;
+ try {
+ db = DocumentBuilderFactory.newInstance().newDocumentBuilder();
+ licenseXML = db.parse(is);
+ } catch (ParserConfigurationException e) {
+ // This should succees
+ e.printStackTrace();
+ }
+ }
+
+ public String getDescription() {
+
+ // TODO
+ return "";
+ }
+
+ public boolean hasBeenVerified() {
+
+ return isVerified;
+ }
+
+ public void verifyLicense() {
+
+ // License is only verified once
+ if (isVerified)
+ return;
+
+ }
+
+ private static String getNormalizedLisenceData()
+ throws LicenseFileCanNotBeRead, InvalidLicenseFile {
+
+ // License must be read before
+ if (licenseXML == null)
+ throw new LicenseFileCanNotBeRead(
+ "File was not found in standard location and it has not been explicitely read during Application.init().");
+
+ // Initialize result
+ CharArrayWriter sink = new CharArrayWriter();
+
+ // Serialize document to sink
+ try {
+ serialize(licenseXML, sink);
+ } catch (IOException e) {
+ throw new InvalidLicenseFile("Can not serialize the license file.");
+ }
+
+ return new String(sink.toCharArray());
+ }
+
+ private static void serialize(Node node, Writer sink) throws IOException {
+
+ // Do not serialize comments and processing instructions
+ if (node.getNodeType() == Node.COMMENT_NODE
+ || node.getNodeType() == Node.PROCESSING_INSTRUCTION_NODE)
+ return;
+
+ // Do not serialize whitespace text-nodes
+ if (node.getNodeType() == Node.TEXT_NODE) {
+ String value = node.getNodeValue();
+ if (value.matches("^\\s*$"))
+ return;
+ }
+
+ // Do not serialize signature
+ if (node.getNodeType() == Node.ELEMENT_NODE
+ && "signature".equals(node.getNodeName()))
+ return;
+
+ // Serialize node name
+ sink.write(node.getNodeName().toLowerCase());
+
+ // Serialize value of the node
+ String value = node.getNodeValue();
+ if (value != null)
+ sink.write("='" + value + "'");
+
+ // Serialize attributes if it has any, in sorted order
+ NamedNodeMap attrs = node.getAttributes();
+ if (attrs != null) {
+ TreeSet names = new TreeSet();
+ for (int i = 0; i < attrs.getLength(); i++)
+ names.add(attrs.item(i).getNodeName());
+ for (Iterator i = names.iterator(); i.hasNext();)
+ serialize(attrs.getNamedItem((String) i.next()), sink);
+ }
+
+ // Serialize child nodes (other than attributes)
+ Node child = node.getFirstChild();
+ if (child != null && node.getNodeType() != Node.ATTRIBUTE_NODE) {
+ sink.write("{");
+ while (child != null) {
+ if (child.getNodeType() != Node.ATTRIBUTE_NODE)
+ serialize(child, sink);
+ child = child.getNextSibling();
+ }
+ sink.write("}");
+ }
+
+ }
+
+ private static byte[] getSignature() throws InvalidLicenseFile {
+
+ if (licenseXML == null)
+ return null;
+
+ // Get the base64 encoded signature from license-file
+ NodeList nl = licenseXML.getElementsByTagName("signature");
+ if (nl == null || nl.getLength() != 1)
+ throw new InvalidLicenseFile("Signature element not found");
+ Node text = nl.item(0).getFirstChild();
+ if (text == null || text.getNodeType() != Node.TEXT_NODE)
+ throw new InvalidLicenseFile("Invalid signature element");
+ String base64 = text.getNodeValue();
+
+ // Decode base64
+
+ // TODO
+ return null;
+
+ }
+
+ private boolean isSignatureValid() throws LicenseFileCanNotBeRead, InvalidLicenseFile {
+
+ // Get signature algorithm instance
+ Signature dsa;
+ try {
+
+ // Verify signature with DSA
+ dsa = Signature.getInstance("SHA1withDSA");
+ dsa.initVerify(publicKey);
+ dsa.update(getNormalizedLisenceData().getBytes("UTF-8"));
+ boolean verifies = dsa.verify(getSignature());
+ System.out.println("signature verifies: " + verifies);
+
+ } catch (NoSuchAlgorithmException e) {
+ e.printStackTrace();
+ return false;
+ } catch (InvalidKeyException e) {
+ e.printStackTrace();
+ return false;
+ } catch (SignatureException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ } catch (UnsupportedEncodingException e) {
+ e.printStackTrace();
+ return false;
+ }
+
+ /* Update and verify the data */
+ /*
+ */
+ // TODO
+ return false;
+ }
+
+ public static class LicenseViolation extends Exception {
+ // TODO
+
+ }
+
+ public static class TooManyConcurrentUsers extends LicenseViolation {
+ // TODO
+
+ }
+
+ public static class LicenseHasExpired extends LicenseViolation {
+ // TODO
+
+ }
+
+ public static class ApplicationClassNameDoesNotMatch extends
+ LicenseViolation {
+
+ }
+
+ public static class InvalidLicenseFile extends Exception {
+ InvalidLicenseFile(String message) {
+ super(message);
+ }
+ }
+
+ public static class LicenseFileCanNotBeRead extends Exception {
+ LicenseFileCanNotBeRead(String message) {
+ super(message);
+ }
+
+ }
+
+ public static void main(String[] attrs) {
+
+ File f = new File(
+ "/Users/phoenix/Documents/workspace/itmill-toolkit/doc/project/license-system/license-file-template.xml");
+ try {
+ License.readLicenseFile(new FileInputStream(f));
+ System.out.println(getNormalizedLisenceData());
+ System.out.println("Signature='" + getSignature() + "'");
+
+ } catch (FileNotFoundException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ } catch (SAXException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ } catch (IOException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ } catch (LicenseFileCanNotBeRead e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ } catch (InvalidLicenseFile e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ }
+
+ }
+
+ /*
+ * Encodes and decodes to and from Base64 notation.
+ *
+ * @author Robert Harder @author rob@iharder.net
+ *
+ * @version 2.1
+ */
+
+ /* ******** P U B L I C F I E L D S ******** */
+
+ /** No options specified. Value is zero. */
+ private final static int Base64_NO_OPTIONS = 0;
+
+ /** Specify encoding. */
+ private final static int Base64_ENCODE = 1;
+
+ /** Specify decoding. */
+ private final static int Base64_DECODE = 0;
+
+ /** Specify that data should be gzip-compressed. */
+ private final static int Base64_GZIP = 2;
+
+ /** Don't break lines when encoding (violates strict Base64 specification) */
+ private final static int Base64_DONT_BREAK_LINES = 8;
+
+ /* ******** P R I V A T E F I E L D S ******** */
+
+ /** Maximum line length (76) of Base64 output. */
+ private final static int Base64_MAX_LINE_LENGTH = 76;
+
+ /** The equals sign (=) as a byte. */
+ private final static byte Base64_EQUALS_SIGN = (byte) '=';
+
+ /** The new line character (\n) as a byte. */
+ private final static byte Base64_NEW_LINE = (byte) '\n';
+
+ /** Preferred encoding. */
+ private final static String Base64_PREFERRED_ENCODING = "UTF-8";
+
+ /** The 64 valid Base64 values. */
+ private final static byte[] Base64_ALPHABET;
+
+ private final static byte[] Base64_NATIVE_ALPHABET =
+ { (byte) 'A', (byte) 'B', (byte) 'C', (byte) 'D', (byte) 'E', (byte) 'F',
+ (byte) 'G', (byte) 'H', (byte) 'I', (byte) 'J', (byte) 'K',
+ (byte) 'L', (byte) 'M', (byte) 'N', (byte) 'O', (byte) 'P',
+ (byte) 'Q', (byte) 'R', (byte) 'S', (byte) 'T', (byte) 'U',
+ (byte) 'V', (byte) 'W', (byte) 'X', (byte) 'Y', (byte) 'Z',
+ (byte) 'a', (byte) 'b', (byte) 'c', (byte) 'd', (byte) 'e',
+ (byte) 'f', (byte) 'g', (byte) 'h', (byte) 'i', (byte) 'j',
+ (byte) 'k', (byte) 'l', (byte) 'm', (byte) 'n', (byte) 'o',
+ (byte) 'p', (byte) 'q', (byte) 'r', (byte) 's', (byte) 't',
+ (byte) 'u', (byte) 'v', (byte) 'w', (byte) 'x', (byte) 'y',
+ (byte) 'z', (byte) '0', (byte) '1', (byte) '2', (byte) '3',
+ (byte) '4', (byte) '5', (byte) '6', (byte) '7', (byte) '8',
+ (byte) '9', (byte) '+', (byte) '/' };
+
+ /** Determine which ALPHABET to use. */
+ static {
+ byte[] __bytes;
+ try {
+ __bytes = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
+ .getBytes(Base64_PREFERRED_ENCODING);
+ } // end try
+ catch (java.io.UnsupportedEncodingException use) {
+ __bytes = Base64_NATIVE_ALPHABET; // Fall back to native encoding
+ } // end catch
+ Base64_ALPHABET = __bytes;
+ } // end static
+
+ /**
+ * Translates a Base64 value to either its 6-bit reconstruction value or a
+ * negative number indicating some other meaning.
+ */
+ private final static byte[] Base64_DECODABET = { -9, -9, -9, -9, -9, -9,
+ -9, -9, -9, // Decimal 0 - 8
+ -5, -5, // Whitespace: Tab and Linefeed
+ -9, -9, // Decimal 11 - 12
+ -5, // Whitespace: Carriage Return
+ -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, // Decimal 14 -
+ // 26
+ -9, -9, -9, -9, -9, // Decimal 27 - 31
+ -5, // Whitespace: Space
+ -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, // Decimal 33 - 42
+ 62, // Plus sign at decimal 43
+ -9, -9, -9, // Decimal 44 - 46
+ 63, // Slash at decimal 47
+ 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, // Numbers zero through nine
+ -9, -9, -9, // Decimal 58 - 60
+ -1, // Equals sign at decimal 61
+ -9, -9, -9, // Decimal 62 - 64
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, // Letters 'A'
+ // through 'N'
+ 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, // Letters 'O'
+ // through 'Z'
+ -9, -9, -9, -9, -9, -9, // Decimal 91 - 96
+ 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, // Letters 'a'
+ // through 'm'
+ 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, // Letters 'n'
+ // through 'z'
+ -9, -9, -9, -9 // Decimal 123 - 126
+ /*
+ * ,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 127 - 139
+ * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 140 - 152
+ * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 153 - 165
+ * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 166 - 178
+ * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 179 - 191
+ * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 192 - 204
+ * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 205 - 217
+ * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 218 - 230
+ * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9, // Decimal 231 - 243
+ * -9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9,-9 // Decimal 244 - 255
+ */
+ };
+
+ // I think I end up not using the BAD_ENCODING indicator.
+ // private final static byte BAD_ENCODING = -9; // Indicates error in
+ // encoding
+ private final static byte Base64_WHITE_SPACE_ENC = -5; // Indicates white
+ // space in encoding
+
+ private final static byte Base64_EQUALS_SIGN_ENC = -1; // Indicates equals
+ // sign in encoding
+
+ /* ******** E N C O D I N G M E T H O D S ******** */
+
+ /**
+ * Encodes up to the first three bytes of array <var>threeBytes</var> and
+ * returns a four-byte array in Base64 notation. The actual number of
+ * significant bytes in your array is given by <var>numSigBytes</var>. The
+ * array <var>threeBytes</var> needs only be as big as <var>numSigBytes</var>.
+ * Code can reuse a byte array by passing a four-byte array as <var>b4</var>.
+ *
+ * @param b4
+ * A reusable byte array to reduce array instantiation
+ * @param threeBytes
+ * the array to convert
+ * @param numSigBytes
+ * the number of significant bytes in your array
+ * @return four byte array in Base64 notation.
+ * @since 1.5.1
+ */
+ private static byte[] base64_encode3to4(byte[] b4, byte[] threeBytes,
+ int numSigBytes) {
+ base64_encode3to4(threeBytes, 0, numSigBytes, b4, 0);
+ return b4;
+ } // end encode3to4
+
+ /**
+ * Encodes up to three bytes of the array <var>source</var> and writes the
+ * resulting four Base64 bytes to <var>destination</var>. The source and
+ * destination arrays can be manipulated anywhere along their length by
+ * specifying <var>srcOffset</var> and <var>destOffset</var>. This method
+ * does not check to make sure your arrays are large enough to accomodate
+ * <var>srcOffset</var> + 3 for the <var>source</var> array or
+ * <var>destOffset</var> + 4 for the <var>destination</var> array. The
+ * actual number of significant bytes in your array is given by
+ * <var>numSigBytes</var>.
+ *
+ * @param source
+ * the array to convert
+ * @param srcOffset
+ * the index where conversion begins
+ * @param numSigBytes
+ * the number of significant bytes in your array
+ * @param destination
+ * the array to hold the conversion
+ * @param destOffset
+ * the index where output will be put
+ * @return the <var>destination</var> array
+ * @since 1.3
+ */
+ private static byte[] base64_encode3to4(byte[] source, int srcOffset,
+ int numSigBytes, byte[] destination, int destOffset) {
+ // 1 2 3
+ // 01234567890123456789012345678901 Bit position
+ // --------000000001111111122222222 Array position from threeBytes
+ // --------| || || || | Six bit groups to index ALPHABET
+ // >>18 >>12 >> 6 >> 0 Right shift necessary
+ // 0x3f 0x3f 0x3f Additional AND
+
+ // Create buffer with zero-padding if there are only one or two
+ // significant bytes passed in the array.
+ // We have to shift left 24 in order to flush out the 1's that appear
+ // when Java treats a value as negative that is cast from a byte to an
+ // int.
+ int inBuff = (numSigBytes > 0 ? ((source[srcOffset] << 24) >>> 8) : 0)
+ | (numSigBytes > 1 ? ((source[srcOffset + 1] << 24) >>> 16) : 0)
+ | (numSigBytes > 2 ? ((source[srcOffset + 2] << 24) >>> 24) : 0);
+
+ switch (numSigBytes) {
+ case 3:
+ destination[destOffset] = Base64_ALPHABET[(inBuff >>> 18)];
+ destination[destOffset + 1] = Base64_ALPHABET[(inBuff >>> 12) & 0x3f];
+ destination[destOffset + 2] = Base64_ALPHABET[(inBuff >>> 6) & 0x3f];
+ destination[destOffset + 3] = Base64_ALPHABET[(inBuff) & 0x3f];
+ return destination;
+
+ case 2:
+ destination[destOffset] = Base64_ALPHABET[(inBuff >>> 18)];
+ destination[destOffset + 1] = Base64_ALPHABET[(inBuff >>> 12) & 0x3f];
+ destination[destOffset + 2] = Base64_ALPHABET[(inBuff >>> 6) & 0x3f];
+ destination[destOffset + 3] = Base64_EQUALS_SIGN;
+ return destination;
+
+ case 1:
+ destination[destOffset] = Base64_ALPHABET[(inBuff >>> 18)];
+ destination[destOffset + 1] = Base64_ALPHABET[(inBuff >>> 12) & 0x3f];
+ destination[destOffset + 2] = Base64_EQUALS_SIGN;
+ destination[destOffset + 3] = Base64_EQUALS_SIGN;
+ return destination;
+
+ default:
+ return destination;
+ } // end switch
+ } // end encode3to4
+
+
+
+ /**
+ * Serializes an object and returns the Base64-encoded version of that
+ * serialized object. If the object cannot be serialized or there is another
+ * error, the method will return <tt>null</tt>.
+ * <p>
+ * Valid options:
+ *
+ * <pre>
+ * GZIP: gzip-compresses object before encoding it.
+ * DONT_BREAK_LINES: don't break lines at 76 characters
+ * <i>Note: Technically, this makes your encoding non-compliant.</i>
+ * </pre>
+ *
+ * <p>
+ * Example: <code>encodeObject( myObj, Base64.GZIP )</code> or
+ * <p>
+ * Example:
+ * <code>encodeObject( myObj, Base64.GZIP | Base64.DONT_BREAK_LINES )</code>
+ *
+ * @param serializableObject
+ * The object to encode
+ * @param options
+ * Specified options
+ * @return The Base64-encoded object
+ * @see Base64#Base64_GZIP
+ * @see Base64#Base64_DONT_BREAK_LINES
+ * @since 2.0
+ */
+ private static String base64_encodeObject(
+ java.io.Serializable serializableObject, int options) {
+ // Streams
+ java.io.ByteArrayOutputStream baos = null;
+ java.io.OutputStream b64os = null;
+ java.io.ObjectOutputStream oos = null;
+ java.util.zip.GZIPOutputStream gzos = null;
+
+ // Isolate options
+ int gzip = (options & Base64_GZIP);
+ int dontBreakLines = (options & Base64_DONT_BREAK_LINES);
+
+ try {
+ // ObjectOutputStream -> (GZIP) -> Base64 -> ByteArrayOutputStream
+ baos = new java.io.ByteArrayOutputStream();
+ b64os = new Base64_OutputStream(baos, Base64_ENCODE
+ | dontBreakLines);
+
+ // GZip?
+ if (gzip == Base64_GZIP) {
+ gzos = new java.util.zip.GZIPOutputStream(b64os);
+ oos = new java.io.ObjectOutputStream(gzos);
+ } // end if: gzip
+ else
+ oos = new java.io.ObjectOutputStream(b64os);
+
+ oos.writeObject(serializableObject);
+ } // end try
+ catch (java.io.IOException e) {
+ e.printStackTrace();
+ return null;
+ } // end catch
+ finally {
+ try {
+ oos.close();
+ } catch (Exception e) {
+ }
+ try {
+ gzos.close();
+ } catch (Exception e) {
+ }
+ try {
+ b64os.close();
+ } catch (Exception e) {
+ }
+ try {
+ baos.close();
+ } catch (Exception e) {
+ }
+ } // end finally
+
+ // Return value according to relevant encoding.
+ try {
+ return new String(baos.toByteArray(), Base64_PREFERRED_ENCODING);
+ } // end try
+ catch (java.io.UnsupportedEncodingException uue) {
+ return new String(baos.toByteArray());
+ } // end catch
+
+ } // end encode
+
+ /**
+ * Encodes a byte array into Base64 notation. Does not GZip-compress data.
+ *
+ * @param source
+ * The data to convert
+ * @since 1.4
+ */
+ private static String base64_encodeBytes(byte[] source) {
+ return base64_encodeBytes(source, 0, source.length, Base64_NO_OPTIONS);
+ } // end encodeBytes
+
+ /**
+ * Encodes a byte array into Base64 notation.
+ * <p>
+ * Valid options:
+ *
+ * <pre>
+ * GZIP: gzip-compresses object before encoding it.
+ * DONT_BREAK_LINES: don't break lines at 76 characters
+ * <i>Note: Technically, this makes your encoding non-compliant.</i>
+ * </pre>
+ *
+ * <p>
+ * Example: <code>encodeBytes( myData, Base64.GZIP )</code> or
+ * <p>
+ * Example:
+ * <code>encodeBytes( myData, Base64.GZIP | Base64.DONT_BREAK_LINES )</code>
+ *
+ *
+ * @param source
+ * The data to convert
+ * @param options
+ * Specified options
+ * @see Base64#Base64_GZIP
+ * @see Base64#Base64_DONT_BREAK_LINES
+ * @since 2.0
+ */
+ private static String base64_encodeBytes(byte[] source, int options) {
+ return base64_encodeBytes(source, 0, source.length, options);
+ } // end encodeBytes
+
+ /**
+ * Encodes a byte array into Base64 notation. Does not GZip-compress data.
+ *
+ * @param source
+ * The data to convert
+ * @param off
+ * Offset in array where conversion should begin
+ * @param len
+ * Length of data to convert
+ * @since 1.4
+ */
+ private static String base64_encodeBytes(byte[] source, int off, int len) {
+ return base64_encodeBytes(source, off, len, Base64_NO_OPTIONS);
+ } // end encodeBytes
+
+ /**
+ * Encodes a byte array into Base64 notation.
+ * <p>
+ * Valid options:
+ *
+ * <pre>
+ * GZIP: gzip-compresses object before encoding it.
+ * DONT_BREAK_LINES: don't break lines at 76 characters
+ * <i>Note: Technically, this makes your encoding non-compliant.</i>
+ * </pre>
+ *
+ * <p>
+ * Example: <code>encodeBytes( myData, Base64.GZIP )</code> or
+ * <p>
+ * Example:
+ * <code>encodeBytes( myData, Base64.GZIP | Base64.DONT_BREAK_LINES )</code>
+ *
+ *
+ * @param source
+ * The data to convert
+ * @param off
+ * Offset in array where conversion should begin
+ * @param len
+ * Length of data to convert
+ * @param options
+ * Specified options
+ * @see Base64#Base64_GZIP
+ * @see Base64#Base64_DONT_BREAK_LINES
+ * @since 2.0
+ */
+ private static String base64_encodeBytes(byte[] source, int off, int len,
+ int options) {
+ // Isolate options
+ int dontBreakLines = (options & Base64_DONT_BREAK_LINES);
+ int gzip = (options & Base64_GZIP);
+
+ // Compress?
+ if (gzip == Base64_GZIP) {
+ java.io.ByteArrayOutputStream baos = null;
+ java.util.zip.GZIPOutputStream gzos = null;
+ Base64_OutputStream b64os = null;
+
+ try {
+ // GZip -> Base64 -> ByteArray
+ baos = new java.io.ByteArrayOutputStream();
+ b64os = new Base64_OutputStream(baos, Base64_ENCODE
+ | dontBreakLines);
+ gzos = new java.util.zip.GZIPOutputStream(b64os);
+
+ gzos.write(source, off, len);
+ gzos.close();
+ } // end try
+ catch (java.io.IOException e) {
+ e.printStackTrace();
+ return null;
+ } // end catch
+ finally {
+ try {
+ gzos.close();
+ } catch (Exception e) {
+ }
+ try {
+ b64os.close();
+ } catch (Exception e) {
+ }
+ try {
+ baos.close();
+ } catch (Exception e) {
+ }
+ } // end finally
+
+ // Return value according to relevant encoding.
+ try {
+ return new String(baos.toByteArray(), Base64_PREFERRED_ENCODING);
+ } // end try
+ catch (java.io.UnsupportedEncodingException uue) {
+ return new String(baos.toByteArray());
+ } // end catch
+ } // end if: compress
+
+ // Else, don't compress. Better not to use streams at all then.
+ else {
+ // Convert option to boolean in way that code likes it.
+ boolean breakLines = dontBreakLines == 0;
+
+ int len43 = len * 4 / 3;
+ byte[] outBuff = new byte[(len43) // Main 4:3
+ + ((len % 3) > 0 ? 4 : 0) // Account for padding
+ + (breakLines ? (len43 / Base64_MAX_LINE_LENGTH) : 0)]; // New
+ // lines
+ int d = 0;
+ int e = 0;
+ int len2 = len - 2;
+ int lineLength = 0;
+ for (; d < len2; d += 3, e += 4) {
+ base64_encode3to4(source, d + off, 3, outBuff, e);
+
+ lineLength += 4;
+ if (breakLines && lineLength == Base64_MAX_LINE_LENGTH) {
+ outBuff[e + 4] = Base64_NEW_LINE;
+ e++;
+ lineLength = 0;
+ } // end if: end of line
+ } // en dfor: each piece of array
+
+ if (d < len) {
+ base64_encode3to4(source, d + off, len - d, outBuff, e);
+ e += 4;
+ } // end if: some padding needed
+
+ // Return value according to relevant encoding.
+ try {
+ return new String(outBuff, 0, e, Base64_PREFERRED_ENCODING);
+ } // end try
+ catch (java.io.UnsupportedEncodingException uue) {
+ return new String(outBuff, 0, e);
+ } // end catch
+
+ } // end else: don't compress
+
+ } // end encodeBytes
+
+ /* ******** D E C O D I N G M E T H O D S ******** */
+
+ /**
+ * Decodes four bytes from array <var>source</var> and writes the resulting
+ * bytes (up to three of them) to <var>destination</var>. The source and
+ * destination arrays can be manipulated anywhere along their length by
+ * specifying <var>srcOffset</var> and <var>destOffset</var>. This method
+ * does not check to make sure your arrays are large enough to accomodate
+ * <var>srcOffset</var> + 4 for the <var>source</var> array or
+ * <var>destOffset</var> + 3 for the <var>destination</var> array. This
+ * method returns the actual number of bytes that were converted from the
+ * Base64 encoding.
+ *
+ *
+ * @param source
+ * the array to convert
+ * @param srcOffset
+ * the index where conversion begins
+ * @param destination
+ * the array to hold the conversion
+ * @param destOffset
+ * the index where output will be put
+ * @return the number of decoded bytes converted
+ * @since 1.3
+ */
+ private static int base64_decode4to3(byte[] source, int srcOffset,
+ byte[] destination, int destOffset) {
+ // Example: Dk==
+ if (source[srcOffset + 2] == Base64_EQUALS_SIGN) {
+ // Two ways to do the same thing. Don't know which way I like best.
+ // int outBuff = ( ( DECODABET[ source[ srcOffset ] ] << 24 ) >>> 6
+ // )
+ // | ( ( DECODABET[ source[ srcOffset + 1] ] << 24 ) >>> 12 );
+ int outBuff = ((Base64_DECODABET[source[srcOffset]] & 0xFF) << 18)
+ | ((Base64_DECODABET[source[srcOffset + 1]] & 0xFF) << 12);
+
+ destination[destOffset] = (byte) (outBuff >>> 16);
+ return 1;
+ }
+
+ // Example: DkL=
+ else if (source[srcOffset + 3] == Base64_EQUALS_SIGN) {
+ // Two ways to do the same thing. Don't know which way I like best.
+ // int outBuff = ( ( DECODABET[ source[ srcOffset ] ] << 24 ) >>> 6
+ // )
+ // | ( ( DECODABET[ source[ srcOffset + 1 ] ] << 24 ) >>> 12 )
+ // | ( ( DECODABET[ source[ srcOffset + 2 ] ] << 24 ) >>> 18 );
+ int outBuff = ((Base64_DECODABET[source[srcOffset]] & 0xFF) << 18)
+ | ((Base64_DECODABET[source[srcOffset + 1]] & 0xFF) << 12)
+ | ((Base64_DECODABET[source[srcOffset + 2]] & 0xFF) << 6);
+
+ destination[destOffset] = (byte) (outBuff >>> 16);
+ destination[destOffset + 1] = (byte) (outBuff >>> 8);
+ return 2;
+ }
+
+ // Example: DkLE
+ else {
+ try {
+ // Two ways to do the same thing. Don't know which way I like
+ // best.
+ // int outBuff = ( ( DECODABET[ source[ srcOffset ] ] << 24 )
+ // >>> 6 )
+ // | ( ( DECODABET[ source[ srcOffset + 1 ] ] << 24 ) >>> 12 )
+ // | ( ( DECODABET[ source[ srcOffset + 2 ] ] << 24 ) >>> 18 )
+ // | ( ( DECODABET[ source[ srcOffset + 3 ] ] << 24 ) >>> 24 );
+ int outBuff = ((Base64_DECODABET[source[srcOffset]] & 0xFF) << 18)
+ | ((Base64_DECODABET[source[srcOffset + 1]] & 0xFF) << 12)
+ | ((Base64_DECODABET[source[srcOffset + 2]] & 0xFF) << 6)
+ | ((Base64_DECODABET[source[srcOffset + 3]] & 0xFF));
+
+ destination[destOffset] = (byte) (outBuff >> 16);
+ destination[destOffset + 1] = (byte) (outBuff >> 8);
+ destination[destOffset + 2] = (byte) (outBuff);
+
+ return 3;
+ } catch (Exception e) {
+ System.out.println("" + source[srcOffset] + ": "
+ + (Base64_DECODABET[source[srcOffset]]));
+ System.out.println("" + source[srcOffset + 1] + ": "
+ + (Base64_DECODABET[source[srcOffset + 1]]));
+ System.out.println("" + source[srcOffset + 2] + ": "
+ + (Base64_DECODABET[source[srcOffset + 2]]));
+ System.out.println("" + source[srcOffset + 3] + ": "
+ + (Base64_DECODABET[source[srcOffset + 3]]));
+ return -1;
+ } // e nd catch
+ }
+ } // end decodeToBytes
+
+ /**
+ * Very low-level access to decoding ASCII characters in the form of a byte
+ * array. Does not support automatically gunzipping or any other "fancy"
+ * features.
+ *
+ * @param source
+ * The Base64 encoded data
+ * @param off
+ * The offset of where to begin decoding
+ * @param len
+ * The length of characters to decode
+ * @return decoded data
+ * @since 1.3
+ */
+ private static byte[] base64_decode(byte[] source, int off, int len) {
+ int len34 = len * 3 / 4;
+ byte[] outBuff = new byte[len34]; // Upper limit on size of output
+ int outBuffPosn = 0;
+
+ byte[] b4 = new byte[4];
+ int b4Posn = 0;
+ int i = 0;
+ byte sbiCrop = 0;
+ byte sbiDecode = 0;
+ for (i = off; i < off + len; i++) {
+ sbiCrop = (byte) (source[i] & 0x7f); // Only the low seven bits
+ sbiDecode = Base64_DECODABET[sbiCrop];
+
+ if (sbiDecode >= Base64_WHITE_SPACE_ENC) // White space, Equals
+ // sign or better
+ {
+ if (sbiDecode >= Base64_EQUALS_SIGN_ENC) {
+ b4[b4Posn++] = sbiCrop;
+ if (b4Posn > 3) {
+ outBuffPosn += base64_decode4to3(b4, 0, outBuff,
+ outBuffPosn);
+ b4Posn = 0;
+
+ // If that was the equals sign, break out of 'for' loop
+ if (sbiCrop == Base64_EQUALS_SIGN)
+ break;
+ } // end if: quartet built
+
+ } // end if: equals sign or better
+
+ } // end if: white space, equals sign or better
+ else {
+ System.err.println("Bad Base64 input character at " + i + ": "
+ + source[i] + "(decimal)");
+ return null;
+ } // end else:
+ } // each input character
+
+ byte[] out = new byte[outBuffPosn];
+ System.arraycopy(outBuff, 0, out, 0, outBuffPosn);
+ return out;
+ } // end decode
+
+ /**
+ * Decodes data from Base64 notation, automatically detecting
+ * gzip-compressed data and decompressing it.
+ *
+ * @param s
+ * the string to decode
+ * @return the decoded data
+ * @since 1.4
+ */
+ private static byte[] base64_decode(String s) {
+ byte[] bytes;
+ try {
+ bytes = s.getBytes(Base64_PREFERRED_ENCODING);
+ } // end try
+ catch (java.io.UnsupportedEncodingException uee) {
+ bytes = s.getBytes();
+ } // end catch
+ // </change>
+
+ // Decode
+ bytes = base64_decode(bytes, 0, bytes.length);
+
+ // Check to see if it's gzip-compressed
+ // GZIP Magic Two-Byte Number: 0x8b1f (35615)
+ if (bytes != null && bytes.length >= 4) {
+
+ int head = ((int) bytes[0] & 0xff) | ((bytes[1] << 8) & 0xff00);
+ if (java.util.zip.GZIPInputStream.GZIP_MAGIC == head) {
+ java.io.ByteArrayInputStream bais = null;
+ java.util.zip.GZIPInputStream gzis = null;
+ java.io.ByteArrayOutputStream baos = null;
+ byte[] buffer = new byte[2048];
+ int length = 0;
+
+ try {
+ baos = new java.io.ByteArrayOutputStream();
+ bais = new java.io.ByteArrayInputStream(bytes);
+ gzis = new java.util.zip.GZIPInputStream(bais);
+
+ while ((length = gzis.read(buffer)) >= 0) {
+ baos.write(buffer, 0, length);
+ } // end while: reading input
+
+ // No error? Get new bytes.
+ bytes = baos.toByteArray();
+
+ } // end try
+ catch (java.io.IOException e) {
+ // Just return originally-decoded bytes
+ } // end catch
+ finally {
+ try {
+ baos.close();
+ } catch (Exception e) {
+ }
+ try {
+ gzis.close();
+ } catch (Exception e) {
+ }
+ try {
+ bais.close();
+ } catch (Exception e) {
+ }
+ } // end finally
+
+ } // end if: gzipped
+ } // end if: bytes.length >= 2
+
+ return bytes;
+ } // end decode
+
+
+ /* ******** I N N E R C L A S S I N P U T S T R E A M ******** */
+
+ /**
+ * A {@link Base64_InputStream} will read data from another
+ * <tt>java.io.InputStream</tt>, given in the constructor, and
+ * encode/decode to/from Base64 notation on the fly.
+ *
+ * @see Base64
+ * @since 1.3
+ */
+ private static class Base64_InputStream extends java.io.FilterInputStream {
+ private boolean encode; // Encoding or decoding
+
+ private int position; // Current position in the buffer
+
+ private byte[] buffer; // Small buffer holding converted data
+
+ private int bufferLength; // Length of buffer (3 or 4)
+
+ private int numSigBytes; // Number of meaningful bytes in the buffer
+
+ private int lineLength;
+
+ private boolean breakLines; // Break lines at less than 80 characters
+
+ /**
+ * Constructs a {@link Base64_InputStream} in DECODE mode.
+ *
+ * @param in
+ * the <tt>java.io.InputStream</tt> from which to read
+ * data.
+ * @since 1.3
+ */
+ public Base64_InputStream(java.io.InputStream in) {
+ this(in, Base64_DECODE);
+ } // end constructor
+
+ /**
+ * Constructs a {@link Base64_InputStream} in either ENCODE or DECODE
+ * mode.
+ * <p>
+ * Valid options:
+ *
+ * <pre>
+ * ENCODE or DECODE: Encode or Decode as data is read.
+ * DONT_BREAK_LINES: don't break lines at 76 characters
+ * (only meaningful when encoding)
+ * <i>Note: Technically, this makes your encoding non-compliant.</i>
+ * </pre>
+ *
+ * <p>
+ * Example: <code>new Base64.InputStream( in, Base64.DECODE )</code>
+ *
+ *
+ * @param in
+ * the <tt>java.io.InputStream</tt> from which to read
+ * data.
+ * @param options
+ * Specified options
+ * @see Base64#Base64_ENCODE
+ * @see Base64#Base64_DECODE
+ * @see Base64#Base64_DONT_BREAK_LINES
+ * @since 2.0
+ */
+ public Base64_InputStream(java.io.InputStream in, int options) {
+ super(in);
+ this.breakLines = (options & Base64_DONT_BREAK_LINES) != Base64_DONT_BREAK_LINES;
+ this.encode = (options & Base64_ENCODE) == Base64_ENCODE;
+ this.bufferLength = encode ? 4 : 3;
+ this.buffer = new byte[bufferLength];
+ this.position = -1;
+ this.lineLength = 0;
+ } // end constructor
+
+ /**
+ * Reads enough of the input stream to convert to/from Base64 and
+ * returns the next byte.
+ *
+ * @return next byte
+ * @since 1.3
+ */
+ public int read() throws java.io.IOException {
+ // Do we need to get data?
+ if (position < 0) {
+ if (encode) {
+ byte[] b3 = new byte[3];
+ int numBinaryBytes = 0;
+ for (int i = 0; i < 3; i++) {
+ try {
+ int b = in.read();
+
+ // If end of stream, b is -1.
+ if (b >= 0) {
+ b3[i] = (byte) b;
+ numBinaryBytes++;
+ } // end if: not end of stream
+
+ } // end try: read
+ catch (java.io.IOException e) {
+ // Only a problem if we got no data at all.
+ if (i == 0)
+ throw e;
+
+ } // end catch
+ } // end for: each needed input byte
+
+ if (numBinaryBytes > 0) {
+ base64_encode3to4(b3, 0, numBinaryBytes, buffer, 0);
+ position = 0;
+ numSigBytes = 4;
+ } // end if: got data
+ else {
+ return -1;
+ } // end else
+ } // end if: encoding
+
+ // Else decoding
+ else {
+ byte[] b4 = new byte[4];
+ int i = 0;
+ for (i = 0; i < 4; i++) {
+ // Read four "meaningful" bytes:
+ int b = 0;
+ do {
+ b = in.read();
+ } while (b >= 0
+ && Base64_DECODABET[b & 0x7f] <= Base64_WHITE_SPACE_ENC);
+
+ if (b < 0)
+ break; // Reads a -1 if end of stream
+
+ b4[i] = (byte) b;
+ } // end for: each needed input byte
+
+ if (i == 4) {
+ numSigBytes = base64_decode4to3(b4, 0, buffer, 0);
+ position = 0;
+ } // end if: got four characters
+ else if (i == 0) {
+ return -1;
+ } // end else if: also padded correctly
+ else {
+ // Must have broken out from above.
+ throw new java.io.IOException(
+ "Improperly padded Base64 input.");
+ } // end
+
+ } // end else: decode
+ } // end else: get data
+
+ // Got data?
+ if (position >= 0) {
+ // End of relevant data?
+ if ( /* !encode && */position >= numSigBytes)
+ return -1;
+
+ if (encode && breakLines
+ && lineLength >= Base64_MAX_LINE_LENGTH) {
+ lineLength = 0;
+ return '\n';
+ } // end if
+ else {
+ lineLength++; // This isn't important when decoding
+ // but throwing an extra "if" seems
+ // just as wasteful.
+
+ int b = buffer[position++];
+
+ if (position >= bufferLength)
+ position = -1;
+
+ return b & 0xFF; // This is how you "cast" a byte that's
+ // intended to be unsigned.
+ } // end else
+ } // end if: position >= 0
+
+ // Else error
+ else {
+ // When JDK1.4 is more accepted, use an assertion here.
+ throw new java.io.IOException(
+ "Error in Base64 code reading stream.");
+ } // end else
+ } // end read
+
+ /**
+ * Calls {@link #read()} repeatedly until the end of stream is reached
+ * or <var>len</var> bytes are read. Returns number of bytes read into
+ * array or -1 if end of stream is encountered.
+ *
+ * @param dest
+ * array to hold values
+ * @param off
+ * offset for array
+ * @param len
+ * max number of bytes to read into array
+ * @return bytes read into array or -1 if end of stream is encountered.
+ * @since 1.3
+ */
+ public int read(byte[] dest, int off, int len)
+ throws java.io.IOException {
+ int i;
+ int b;
+ for (i = 0; i < len; i++) {
+ b = read();
+
+ // if( b < 0 && i == 0 )
+ // return -1;
+
+ if (b >= 0)
+ dest[off + i] = (byte) b;
+ else if (i == 0)
+ return -1;
+ else
+ break; // Out of 'for' loop
+ } // end for: each byte read
+ return i;
+ } // end read
+
+ } // end inner class InputStream
+
+ /* ******** I N N E R C L A S S O U T P U T S T R E A M ******** */
+
+ /**
+ * A {@link Base64_OutputStream} will write data to another
+ * <tt>java.io.OutputStream</tt>, given in the constructor, and
+ * encode/decode to/from Base64 notation on the fly.
+ *
+ * @see Base64
+ * @since 1.3
+ */
+ private static class Base64_OutputStream extends java.io.FilterOutputStream {
+ private boolean encode;
+
+ private int position;
+
+ private byte[] buffer;
+
+ private int bufferLength;
+
+ private int lineLength;
+
+ private boolean breakLines;
+
+ private byte[] b4; // Scratch used in a few places
+
+ private boolean suspendEncoding;
+
+ /**
+ * Constructs a {@link Base64_OutputStream} in ENCODE mode.
+ *
+ * @param out
+ * the <tt>java.io.OutputStream</tt> to which data will be
+ * written.
+ * @since 1.3
+ */
+ public Base64_OutputStream(java.io.OutputStream out) {
+ this(out, Base64_ENCODE);
+ } // end constructor
+
+ /**
+ * Constructs a {@link Base64_OutputStream} in either ENCODE or DECODE
+ * mode.
+ * <p>
+ * Valid options:
+ *
+ * <pre>
+ * ENCODE or DECODE: Encode or Decode as data is read.
+ * DONT_BREAK_LINES: don't break lines at 76 characters
+ * (only meaningful when encoding)
+ * <i>Note: Technically, this makes your encoding non-compliant.</i>
+ * </pre>
+ *
+ * <p>
+ * Example: <code>new Base64.OutputStream( out, Base64.ENCODE )</code>
+ *
+ * @param out
+ * the <tt>java.io.OutputStream</tt> to which data will be
+ * written.
+ * @param options
+ * Specified options.
+ * @see Base64#Base64_ENCODE
+ * @see Base64#Base64_DECODE
+ * @see Base64#Base64_DONT_BREAK_LINES
+ * @since 1.3
+ */
+ public Base64_OutputStream(java.io.OutputStream out, int options) {
+ super(out);
+ this.breakLines = (options & Base64_DONT_BREAK_LINES) != Base64_DONT_BREAK_LINES;
+ this.encode = (options & Base64_ENCODE) == Base64_ENCODE;
+ this.bufferLength = encode ? 3 : 4;
+ this.buffer = new byte[bufferLength];
+ this.position = 0;
+ this.lineLength = 0;
+ this.suspendEncoding = false;
+ this.b4 = new byte[4];
+ } // end constructor
+
+ /**
+ * Writes the byte to the output stream after converting to/from Base64
+ * notation. When encoding, bytes are buffered three at a time before
+ * the output stream actually gets a write() call. When decoding, bytes
+ * are buffered four at a time.
+ *
+ * @param theByte
+ * the byte to write
+ * @since 1.3
+ */
+ public void write(int theByte) throws java.io.IOException {
+ // Encoding suspended?
+ if (suspendEncoding) {
+ super.out.write(theByte);
+ return;
+ } // end if: supsended
+
+ // Encode?
+ if (encode) {
+ buffer[position++] = (byte) theByte;
+ if (position >= bufferLength) // Enough to encode.
+ {
+ out.write(base64_encode3to4(b4, buffer, bufferLength));
+
+ lineLength += 4;
+ if (breakLines && lineLength >= Base64_MAX_LINE_LENGTH) {
+ out.write(Base64_NEW_LINE);
+ lineLength = 0;
+ } // end if: end of line
+
+ position = 0;
+ } // end if: enough to output
+ } // end if: encoding
+
+ // Else, Decoding
+ else {
+ // Meaningful Base64 character?
+ if (Base64_DECODABET[theByte & 0x7f] > Base64_WHITE_SPACE_ENC) {
+ buffer[position++] = (byte) theByte;
+ if (position >= bufferLength) // Enough to output.
+ {
+ int len = base64_decode4to3(buffer, 0, b4, 0);
+ out.write(b4, 0, len);
+ // out.write( Base64.decode4to3( buffer ) );
+ position = 0;
+ } // end if: enough to output
+ } // end if: meaningful base64 character
+ else if (Base64_DECODABET[theByte & 0x7f] != Base64_WHITE_SPACE_ENC) {
+ throw new java.io.IOException(
+ "Invalid character in Base64 data.");
+ } // end else: not white space either
+ } // end else: decoding
+ } // end write
+
+ /**
+ * Calls {@link #write(int)} repeatedly until <var>len</var> bytes are
+ * written.
+ *
+ * @param theBytes
+ * array from which to read bytes
+ * @param off
+ * offset for array
+ * @param len
+ * max number of bytes to read into array
+ * @since 1.3
+ */
+ public void write(byte[] theBytes, int off, int len)
+ throws java.io.IOException {
+ // Encoding suspended?
+ if (suspendEncoding) {
+ super.out.write(theBytes, off, len);
+ return;
+ } // end if: supsended
+
+ for (int i = 0; i < len; i++) {
+ write(theBytes[off + i]);
+ } // end for: each byte written
+
+ } // end write
+
+ /**
+ * Method added by PHIL. [Thanks, PHIL. -Rob] This pads the buffer
+ * without closing the stream.
+ */
+ public void flushBase64() throws java.io.IOException {
+ if (position > 0) {
+ if (encode) {
+ out.write(base64_encode3to4(b4, buffer, position));
+ position = 0;
+ } // end if: encoding
+ else {
+ throw new java.io.IOException(
+ "Base64 input not properly padded.");
+ } // end else: decoding
+ } // end if: buffer partially full
+
+ } // end flush
+
+ /**
+ * Flushes and closes (I think, in the superclass) the stream.
+ *
+ * @since 1.3
+ */
+ public void close() throws java.io.IOException {
+ // 1. Ensure that pending characters are written
+ flushBase64();
+
+ // 2. Actually close the stream
+ // Base class both flushes and closes.
+ super.close();
+
+ buffer = null;
+ out = null;
+ } // end close
+
+ /**
+ * Suspends encoding of the stream. May be helpful if you need to embed
+ * a piece of base640-encoded data in a stream.
+ *
+ * @since 1.5.1
+ */
+ public void suspendEncoding() throws java.io.IOException {
+ flushBase64();
+ this.suspendEncoding = true;
+ } // end suspendEncoding
+
+ /**
+ * Resumes encoding of the stream. May be helpful if you need to embed a
+ * piece of base640-encoded data in a stream.
+ *
+ * @since 1.5.1
+ */
+ public void resumeEncoding() {
+ this.suspendEncoding = false;
+ } // end resumeEncoding
+
+ } // end inner class OutputStream
+
+}
projects / vaadin-framework.git / commitdiff