pdf-as-lib maven project files moved to pdf-as-lib

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/pdf-as/trunk@926 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c

1 files changed, 0 insertions, 2145 deletions

diff --git a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java
deleted file mode 100644
index ece9525..0000000
--- a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java
+++ /dev/null
@@ -1,2145 +0,0 @@
-/**

- * <copyright> Copyright 2006 by Know-Center, Graz, Austria </copyright>

- * PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a

- * joint initiative of the Federal Chancellery Austria and Graz University of

- * Technology.

- *

- * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by

- * the European Commission - subsequent versions of the EUPL (the "Licence");

- * You may not use this work except in compliance with the Licence.

- * You may obtain a copy of the Licence at:

- * http://www.osor.eu/eupl/

- *

- * Unless required by applicable law or agreed to in writing, software

- * distributed under the Licence is distributed on an "AS IS" basis,

- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

- * See the Licence for the specific language governing permissions and

- * limitations under the Licence.

- *

- * This product combines work with different licenses. See the "NOTICE" text

- * file for details on the various modules and licenses.

- * The "NOTICE" text file is part of the distribution. Any derivative works

- * that you distribute must include a readable copy of the "NOTICE" text file.

- *

- * $Id: BinarySignature.java,v 1.4 2006/10/11 07:57:58 wprinz Exp $

- */

-package at.knowcenter.wag.egov.egiz.pdf;

-

-import java.io.ByteArrayOutputStream;

-import java.io.IOException;

-import java.io.OutputStream;

-import java.io.UnsupportedEncodingException;

-import java.net.MalformedURLException;

-import java.security.MessageDigest;

-import java.security.NoSuchAlgorithmException;

-import java.security.cert.CertificateEncodingException;

-import java.security.cert.X509Certificate;

-import java.util.ArrayList;

-import java.util.Collections;

-import java.util.Comparator;

-import java.util.Iterator;

-import java.util.List;

-

-import org.apache.commons.lang.ArrayUtils;

-import org.apache.commons.logging.Log;

-import org.apache.commons.logging.LogFactory;

-

-import at.gv.egiz.pdfas.api.timestamp.TimeStamper;

-import at.gv.egiz.pdfas.exceptions.ErrorCode;

-import at.gv.egiz.pdfas.exceptions.pdf.CaptionNotFoundException;

-import at.gv.egiz.pdfas.exceptions.pdf.KZSettingNotFoundException;

-import at.gv.egiz.pdfas.framework.input.PdfDataSource;

-import at.gv.egiz.pdfas.framework.output.DataSink;

-import at.gv.egiz.pdfas.framework.signator.SignatorInformation;

-import at.gv.egiz.pdfas.placeholder.SignaturePlaceholderContext;

-import at.gv.egiz.pdfas.placeholder.SignaturePlaceholderData;

-import at.gv.egiz.pdfas.utils.PDFASUtils;

-import at.knowcenter.wag.egov.egiz.cfg.SettingsReader;

-import at.knowcenter.wag.egov.egiz.exceptions.PDFDocumentException;

-import at.knowcenter.wag.egov.egiz.exceptions.PlaceholderException;

-import at.knowcenter.wag.egov.egiz.exceptions.PresentableException;

-import at.knowcenter.wag.egov.egiz.exceptions.SettingNotFoundException;

-import at.knowcenter.wag.egov.egiz.exceptions.SettingsException;

-import at.knowcenter.wag.egov.egiz.sig.SignatureFieldDefinition;

-import at.knowcenter.wag.egov.egiz.sig.SignatureObject;

-import at.knowcenter.wag.egov.egiz.sig.SignatureTypeDefinition;

-import at.knowcenter.wag.egov.egiz.sig.SignatureTypes;

-import at.knowcenter.wag.egov.egiz.tools.CodingHelper;

-import at.knowcenter.wag.exactparser.ByteArrayUtils;

-

-import com.lowagie.text.BadElementException;

-import com.lowagie.text.Document;

-import com.lowagie.text.DocumentException;

-import com.lowagie.text.Image;

-import com.lowagie.text.Rectangle;

-import com.lowagie.text.pdf.BadPdfFormatException;

-import com.lowagie.text.pdf.PRStream;

-import com.lowagie.text.pdf.PdfArray;

-import com.lowagie.text.pdf.PdfContentByte;

-import com.lowagie.text.pdf.PdfDictionary;

-import com.lowagie.text.pdf.PdfImage;

-import com.lowagie.text.pdf.PdfIndirectObject;

-import com.lowagie.text.pdf.PdfIndirectReference;

-import com.lowagie.text.pdf.PdfName;

-import com.lowagie.text.pdf.PdfNumber;

-import com.lowagie.text.pdf.PdfObject;

-import com.lowagie.text.pdf.PdfPTable;

-import com.lowagie.text.pdf.PdfReader;

-import com.lowagie.text.pdf.PdfStamper;

-import com.lowagie.text.pdf.PdfStamperImp;

-import com.lowagie.text.pdf.PdfString;

-import com.lowagie.text.pdf.PdfTemplate;

-

-/**

- * Contains various extension functions to digitally sign documents.

- * 

- * <p>

- * These functions are used to replace parts of the original Egiz plain text

- * signature mechanism.

- * </p>

- * 

- * @author wprinz

- */

-public abstract class BinarySignature

-{

-//23.11.2010 changed by exthex - added replacePlaceholder(PdfStamper stamper, int pageNr, String placeholderName) method

-  

-  protected static Log logger = LogFactory.getLog(BinarySignature.class);

-  /**

-   * The tolerance area of the line break algorithm.

-   * 

-   * @see Placeholder#replacePlaceholderWithTolerance(byte[], List, byte[], int)

-   */

-  public static final int LINE_BREAK_TOLERANCE = 10;

-

-  /**

-   * The number of bytes left out for the certificate placeholder.

-   */

-  public static final int CERTIFICATE_PLACEHOLDER_LENGTH = 10000;

-  

-  /**

-   * The number of bytes left out for the timestamp placeholder.

-   */

-  public static final int TIMESTAMP_PLACEHOLDER_LENGTH = 5000;  

-

-  /**

-   * The placeholder character used to fill out Strings in the layout process.

-   */

-  public static final byte LAYOUT_PLACEHOLDER = 'w';

-

-  /**

-   * This placeholder is used to fill out holes between the byte ranges before

-   * the document is signed.

-   */

-  public static final byte SIGN_PLACEHOLDER = 0;

-

-  /**

-   * The nil brev used to define an unrecognized value.

-   */

-  public static final byte[] BREV_NIL = { 'n', 'i', 'l' };

-

-  /**

-   * The date brev.

-   */

-  public static final byte[] BREV_DAT = { 'd', 'a', 't' };

-

-  /**

-   * The issure brev.

-   */

-  public static final byte[] BREV_ISS = { 'i', 's', 's' };

-

-  /**

-   * The serial number brev.

-   */

-  public static final byte[] BREV_SNR = { 's', 'n', 'r' };

-

-  /**

-   * The value brev.

-   */

-  public static final byte[] BREV_VAL = { 'v', 'a', 'l' };

-

-  /**

-   * The SIG_ID brev.

-   */

-  public static final byte[] BREV_SID = { 's', 'i', 'd' };

-  

-  /**

-   * The SIG_ALG brev.

-   */

-  public static final byte[] BREV_ALG = { 'a', 'l', 'g' };  

-

-  /**

-   * No explicit encoding.

-   */

-  public static final byte[] ENCODING_NIL = { 'n', 'i', 'l' };

-

-  /**

-   * PDF WinAnsiEncoding.

-   */

-  public static final byte[] ENCODING_WIN = { 'w', 'i', 'n' };

-

-  /**

-   * URL encoding.

-   */

-  public static final byte[] ENCODING_URL = { 'u', 'r', 'l' };

-

-  /**

-   * The PDFName of the Egiz Dictionary.

-   * 

-   * <p>

-   * Used to locate and identify the Egiz Dictionary in the document.

-   * </p>

-   */

-  public static final PdfName EGIZ_DICT_NAME = new PdfName("EGIZSigDict");

-

-  /**

-   * The PDFName of the Original Document Size (ODS) field in an Egiz

-   * Dictionary.

-   * 

-   * <p>

-   * The ODS must be a positive integral number.

-   * </p>

-   */

-  public static final PdfName EGIZ_ODS_NAME = new PdfName("ODS");

-

-  /**

-   * The PDFName of the Kennzeichnung attribute.

-   */

-  public static final PdfName EGIZ_KZ_NAME = new PdfName("ID");

-

-  /**

-   * The PDFName of the /replaces field in an Egiz Dictionary.

-   */

-  public static final PdfName EGIZ_REPLACES_NAME = new PdfName("replaces");

-

-  /**

-   * The PDFName of the /encodings field in an Egiz Dictionary.

-   */

-  public static final PdfName EGIZ_ENCODINGS_NAME = new PdfName("encodings");

-

-  /**

-   * The PDFName of the byte ranges array.

-   */

-  public static final PdfName EGIZ_BYTERANGES_NAME = new PdfName("ByteRange");

-

-  /**

-   * The PdfName of the certificate array.

-   */

-  public static final PdfName EGIZ_CERTIFICATE_NAME = new PdfName("Cert");

-  

-  /**

-   * The PdfName of the Timestamp

-   */

-  public static final PdfName EGIZ_TIMESTAMP_NAME = new PdfName("TimeStamp");

-

-  /**

-   * The PdfName of the data array that contains various egiz-dict data.

-   */

-  public static final PdfName EGIZ_DATA_NAME = new PdfName("Data");

-

-  /**

-   * The PDFName of the Signature XObject field in an Egiz Dictionary.

-   * 

-   * <p>

-   * This must be an indirect reference to the XObject containing the Signature

-   * table.

-   * </p>

-   */

-  public static final PdfName EGIZ_XOBJ_NAME = new PdfName("SigXObject");

-

-  /**

-   * The number placeholder that is used to give numbers a fixed length.

-   */

-  protected static final PdfNumber NUMBER_PLACEHOLDER = new PdfNumber(999999999);

-  

-  /**

-   * Extracts the signature text only.

-   * 

-   * <p>

-   * The signature text is the text of the Signature XObject.

-   * </p>

-   * 

-   * @param egiz_dict

-   *          The Egiz Dictionary.

-   * 

-   * @return Returns the signature text.

-   */

-  public static String extractSignatureTextOnly(PdfDictionary egiz_dict) throws IOException

-  {

-    PdfIndirectReference xobj_ir = (PdfIndirectReference) egiz_dict.get(EGIZ_XOBJ_NAME);

-    PRStream temp_stream = (PRStream) PdfReader.getPdfObject(xobj_ir);

-

-    byte[] stream_bytes = PdfReader.getStreamBytes(temp_stream);

-

-    return Utils.extractPureTextFromContentStream(stream_bytes);

-  }

-

-  /**

-   * Retrieves the size of the original document from the Egiz Dictionary.

-   * 

-   * @param egiz_dict

-   *          The Egiz Dictionary.

-   * @return Returns the size (in bytes) of the original document.

-   */

-  public static int getOriginalDocumentSizeFromEgizDict(PdfDictionary egiz_dict)

-  {

-    PdfObject ods_obj = egiz_dict.get(EGIZ_ODS_NAME);

-    PdfNumber ods_number = (PdfNumber) PdfReader.getPdfObject(ods_obj);

-

-    return ods_number.intValue();

-  }

-

-  /**

-   * Retrieves the previous Egiz dictionary from the given one, if a previous

-   * dictionary exists.

-   * 

-   * @param egiz_dict

-   *          The Egiz Dictionary.

-   * @return Returns the previous Egiz Dictionary, or null if there is none.

-   */

-  public static PdfDictionary getPreviousFromEgizDict(PdfDictionary egiz_dict)

-  {

-    PdfObject prev_obj = egiz_dict.get(PdfName.PREV);

-    PdfDictionary previous_dict = (PdfDictionary) PdfReader.getPdfObject(prev_obj);

-    return previous_dict;

-  }

-

-  /**

-   * Retrieves the Egiz Dictionary from the document if present.

-   * 

-   * @param reader

-   *          The reader to retrieve the dictionary from.

-   * @return Returns the Egiz Dictionary, if present, or returns null, if no

-   *         egiz dictionary was found.

-   */

-  public static PdfDictionary getEgizDictFromReader(PdfReader reader)

-  {

-    PdfIndirectReference dict_ir = getEgizDictIndRefFromReader(reader);

-    if (dict_ir == null)

-    {

-      return null;

-    }

-

-    PdfDictionary egiz_dict = (PdfDictionary) PdfReader.getPdfObject(dict_ir);

-

-    return egiz_dict;

-  }

-

-  /**

-   * Retrieves the Egiz Dictionary's indirect reference from the reader.

-   * 

-   * @param reader

-   *          The reader.

-   * @return Returns the indirect reference of the Egiz Dictionary, or null, if

-   *         none exists.

-   */

-  public static PdfIndirectReference getEgizDictIndRefFromReader(PdfReader reader)

-  {

-    PdfDictionary catalog = reader.getCatalog();

-    PdfIndirectReference dict_ir = (PdfIndirectReference) catalog.get(EGIZ_DICT_NAME);

-    return dict_ir;

-  }

-

-  /**

-   * Retrieves the chain of Egiz Dictionaries from the reader.

-   * 

-   * <p>

-   * The first element in the List will be the top most (oldest) Egiz

-   * Dictionary. The last element in the List will be the bottom most (latest)

-   * Egiz Dictionary. If the list is empty, no dictionary could be found at all,

-   * which means that the document is not digitally signed.

-   * </p>

-   * 

-   * @param reader

-   *          The reader.

-   * @return Returns the List of PdfDictionaries from the document.

-   */

-  public static List getEgizDictChainFromReader(PdfReader reader)

-  {

-    List dicts = new ArrayList();

-

-    PdfDictionary current_dict = getEgizDictFromReader(reader);

-    if (current_dict != null)

-    {

-      dicts.add(0, current_dict);

-

-      while ((current_dict = getPreviousFromEgizDict(current_dict)) != null)

-      {

-        dicts.add(0, current_dict);

-      }

-    }

-

-    return dicts;

-  }

-

-  /**

-   * Builds a digest of the given data.

-   * 

-   * @param data

-   *          The data to be digested.

-   * @param length

-   *          The length of the data portion that should be used for digesting.

-   *          This allows to build the digest only over parts of the data.

-   * @return Returns the created digest.

-   * @throws PDFDocumentException

-   *           Forwarded exception.

-   */

-  public static byte[] buildDigest(final byte[] data, final int length) throws PDFDocumentException

-  {

-    MessageDigest sha_512 = null;

-    try

-    {

-      sha_512 = MessageDigest.getInstance("SHA-512");

-    }

-    catch (NoSuchAlgorithmException e)

-    {

-      e.printStackTrace();

-      throw new PDFDocumentException(202, "Digest algorithm not supported - NoSuchAlgorithmException", e);

-    }

-

-    sha_512.reset();

-    sha_512.update(data, 0, length);

-    byte[] digest = sha_512.digest();

-

-    return digest;

-  }

-

-  /**

-   * Retrieves the signable text from the given document.

-   * 

-   * @param data

-   *          The data.

-   * @param ods

-   *          The original document size.

-   * @return Returns the signable text.

-   */

-  public static String retrieveSignableTextFromData(final byte[] data, final int ods)

-  {

-    // byte[] digest = buildDigest(data, ods);

-    String raw_text = CodingHelper.encodeBase64(data);// digest); // data);

-

-    return raw_text;

-  }

-

-  /**

-   * Fills the holes in the byte ranges with the SIGN_PLACEHOLDER.

-   * 

-   * @param data

-   *          The given byte ranged data.

-   * @param byte_ranges

-   *          The byte ranges.

-   * @return Returns the filled text.

-   */

-  public static byte[] prepareDataToSign(final byte[] data, final List byte_ranges)

-  {

-    ByteArrayOutputStream baos = new ByteArrayOutputStream();

-    Iterator it = byte_ranges.iterator();

-    int last_end = 0;

-    while (it.hasNext())

-    {

-      StringInfo si = (StringInfo) it.next();

-

-      for (int i = last_end; i < si.string_start; i++)

-      {

-        baos.write(SIGN_PLACEHOLDER);

-      }

-

-      baos.write(data, si.string_start, si.string_length);

-

-      last_end = si.string_start + si.string_length;

-    }

-    byte[] data_to_sign = baos.toByteArray();

-

-    return data_to_sign;

-  }

-

-  // TODO old code - remove

-  // /**

-  // * Extracts the binary 'text' of a document.

-  // *

-  // * <p>

-  // * If the document contains an Egiz Dictionary, which means that it is

-  // already

-  // * signed, the binary text is the Base64 coded string of the original

-  // document

-  // * followed by the Ascii representation of the signature block.

-  // * </p>

-  // * <p>

-  // * If the document does not contain an Egiz Dictionary, which means that it

-  // is

-  // * unsigned, only the binary Base64 coded original document is returned as

-  // * binary text.

-  // * </p>

-  // * <p>

-  // * This function is intented for being used instead of the "text extraction"

-  // * mechanism used in the plain text Egiz project.

-  // * </p>

-  // *

-  // * @param doc

-  // * The file.

-  // * @return Returns the binary text of the document.

-  // * @throws PDFDocumentException

-  // * Forwarded exception.

-  // */

-  // public static String extractTextBinary(File doc) throws

-  // PDFDocumentException

-  // {

-  // try

-  // {

-  // FileInputStream fis = new FileInputStream(doc);

-  // return extractTextBinary(fis);

-  // }

-  // catch (FileNotFoundException e)

-  // {

-  // throw new PDFDocumentException(202, e);

-  // }

-  // }

-  //

-  // /**

-  // * Extracts the text binary.

-  // *

-  // * @param is

-  // * @return Returns the binary text.

-  // * @throws PDFDocumentException

-  // */

-  // public static String extractTextBinary(InputStream is) throws

-  // PDFDocumentException

-  // {

-  // try

-  // {

-  // // for some stupid reason this produces a read error if the is comes from

-  // // a

-  // // multipart servlet form..???

-  // ByteArrayOutputStream baos = new ByteArrayOutputStream();

-  // int i = -1;

-  // int acc = 0;

-  // byte[] b = new byte[1000];

-  // while ((i = is.read(b)) > 0)

-  // {

-  // acc += i;

-  // System.out.print(" " + i);

-  // baos.write(b, 0, i);

-  // }

-  // System.out.println("acc = " + acc);

-  // byte[] pdf = baos.toByteArray();

-  //

-  // return extractTextBinary(pdf);

-  // }

-  // catch (IOException e)

-  // {

-  // throw new PDFDocumentException(202, e);

-  // }

-  // }

-  //

-  // /**

-  // * Extracts the signable text from a binary pdf document.

-  // *

-  // * <p>

-  // * The signable text is the text that will be signed or verified afterwards.

-  // * </p>

-  // *

-  // * @param pdf

-  // * The pdf document.

-  // * @return Returns the extracted text String.

-  // * @throws PDFDocumentException

-  // * Forwarded exception.

-  // */

-  // public static String extractTextBinary(final byte[] pdf) throws

-  // PDFDocumentException

-  // {

-  // try

-  // {

-  // PdfReader reader = new PdfReader(new ByteArrayInputStream(pdf));

-  // PdfDictionary egiz_dict = getEgizDictFromReader(reader);

-  // if (egiz_dict == null)

-  // {

-  // System.out.println("NO Egiz Dict found - whole doc = original doc");

-  //

-  // int ods = pdf.length;

-  // return retrieveSignableTextFromData(pdf, ods);

-  // }

-  //

-  // String sig_text = extractSignatureTextOnly(egiz_dict);

-  //

-  // int ods = getOriginalDocumentSizeFromEgizDict(egiz_dict);

-  //

-  // String raw_text = retrieveSignableTextFromData(pdf, ods);

-  // raw_text += "\n";

-  // raw_text += sig_text;

-  //

-  // return raw_text;

-  // }

-  // catch (IOException e)

-  // {

-  // throw new PDFDocumentException(202, e);

-  // }

-  // }

-

-  // TODO obsolete code - remove

-  // /**

-  // * Retrieves the List of SignatureHolders containing the information of all

-  // * digital signatures of the given document.

-  // *

-  // * <p>

-  // * If the List of SignatureHolders is empty, the document is not signed

-  // * anyways.

-  // * </p>

-  // *

-  // * @param pdf

-  // * The complete pdf document.

-  // * @return Returns the List of SignatureHolders.

-  // * @throws PDFDocumentException

-  // * @throws SignatureTypesException

-  // * @throws SignatureException

-  // */

-  // public static List extractSignatureHoldersBinary(final byte[] pdf) throws

-  // PDFDocumentException, SignatureTypesException, SignatureException

-  // {

-  // try

-  // {

-  // PdfReader reader = new PdfReader(new ByteArrayInputStream(pdf));

-  // List chain = getEgizDictChainFromReader(reader);

-  //

-  // List signatures = new ArrayList();

-  // Iterator it = chain.iterator();

-  // while (it.hasNext())

-  // {

-  // PdfDictionary dict = (PdfDictionary) it.next();

-  //

-  // int ods = getOriginalDocumentSizeFromEgizDict(dict);

-  // String signature_text = extractSignatureTextOnly(dict);

-  //

-  // SignatureTypes sig_types = SignatureTypes.getInstance();

-  // List types = sig_types.getSignatureTypeDefinitions();

-  // SignatureBlock sig_block = new SignatureBlock(types);

-  // boolean could_separate = sig_block.separateBlockFromRawText(signature_text,

-  // false);

-  //

-  // if (could_separate)

-  // {

-  // SignatureObject sig_object = sig_block.getSignatureObject();

-  //

-  // SignatureHolder holder = new BinarySignatureHolder(pdf, ods, sig_object);

-  // signatures.add(holder);

-  // }

-  // }

-  //

-  // return signatures;

-  // }

-  // catch (IOException e)

-  // {

-  // throw new PDFDocumentException(201, e);

-  // }

-  // }

-

-  // /**

-  // * Signs a document with the given signature table using the Incremental

-  // * Update method.

-  // *

-  // * <p>

-  // * The table containing the signature text will be appended. As specified by

-  // * the parameters, the signature will be appended to the last page, or a

-  // plain

-  // * new page will be created for the signature to hold.

-  // * </p>

-  // * <p>

-  // * The table will be completely wrapped by an XObject, which will also be

-  // * indirectly referenced by the Egiz Dictionary. This will ease the

-  // * verification process.

-  // * </p>

-  // * <p>

-  // * An Egiz Dictionary will be added to the new document that contains

-  // * information about the signature. Basically the size of the original

-  // * document and the reference of the signature table.

-  // * </p>

-  // *

-  // * @param original_document

-  // * The file name of the original document.

-  // * @param new_document

-  // * The file name of the new document to be created.

-  // * @param pdf_table

-  // * The PdfPTable that contains the signature block.

-  // * @param pos_x

-  // * The x position where the table should be inserted.

-  // * @param pos_y

-  // * The y position where the table should be inserted (on the last

-  // * page). If this is negative, a new page will be appended to the

-  // * document. Then the table will be inserted on that new page using

-  // * the absolute value of pos_y. Note that pos_y specifies the top

-  // * line of the table.

-  // * @throws PresentableException

-  // * Forwarded exception.

-  // *

-  // * @see #writeIncrementalUpdate(byte[], PdfPTable, float, float, boolean)

-  // */

-  // public static void writeIncrementalUpdate(String original_document,

-  // String new_document, PdfPTable pdf_table, float pos_x, float pos_y,

-  // int egiz_dict_num_replaces) throws PresentableException

-  // {

-  // try

-  // {

-  // File original_document_file = new File(original_document);

-  // FileInputStream fis = new FileInputStream(original_document_file);

-  // byte[] pdf = new byte[(int) original_document_file.length()];

-  // fis.read(pdf);

-  // fis.close();

-  //

-  // byte[] signed_pdf = writeIncrementalUpdate(pdf, pdf_table, pos_x, pos_y,

-  // egiz_dict_num_replaces);

-  //

-  // File new_document_file = new File(new_document);

-  // FileOutputStream fos = new FileOutputStream(new_document_file);

-  // fos.write(signed_pdf);

-  // fos.close();

-  // }

-  // catch (IOException e)

-  // {

-  // throw new PresentableException(e);

-  // }

-  // }

-  

-  protected static int getLineBreakTolerance(IncrementalUpdateInformation iui) throws PDFDocumentException

-  {

-    SettingsReader settings;

-    try

-    {

-      settings = SettingsReader.getInstance();

-    }

-    catch (SettingsException e)

-    {

-      throw new PDFDocumentException(e.getErrorCode(), e);

-    }

-    String phLineBreakTolerance = SignatureTypeDefinition.readPhLenStringFromSettings(settings, iui.signProfile, "line_break_tolerance");

-    int lineBreakTolerance = LINE_BREAK_TOLERANCE;

-    if (phLineBreakTolerance != null)

-    {

-      lineBreakTolerance = Integer.parseInt(phLineBreakTolerance);

-    }

-    return lineBreakTolerance;

-  }

-  

-  protected static int getCertificatePlaceholderLength(IncrementalUpdateInformation iui) throws SettingNotFoundException

-  {

-    SettingsReader settings;

-    try

-    {

-      settings = SettingsReader.getInstance();

-    }

-    catch (SettingsException e)

-    {

-      throw new SettingNotFoundException(e);

-    }

-    String certPhLen = SignatureTypeDefinition.readPhLenStringFromSettings(settings, iui.signProfile, "certificate");

-    int certLen = CERTIFICATE_PLACEHOLDER_LENGTH;

-    if (certPhLen != null)

-    {

-      certLen = Integer.parseInt(certPhLen);

-    }

-    return certLen;

-  }

-  

-  protected static int getTimestampPlaceholderLength(IncrementalUpdateInformation iui) throws SettingNotFoundException

-  {

-    SettingsReader settings;

-    try

-    {

-      settings = SettingsReader.getInstance();

-    }

-    catch (SettingsException e)

-    {

-      throw new SettingNotFoundException(e);

-    }

-    String phLen = SignatureTypeDefinition.readPhLenStringFromSettings(settings, iui.signProfile, "timestamp");

-    int tsLen = TIMESTAMP_PLACEHOLDER_LENGTH;

-    if (phLen != null)

-    {

-      tsLen = Integer.parseInt(phLen);

-    }

-    return tsLen;

-  }

-

-  /**

-   * Signs a document with the given signature table using the Incremental

-   * Update method.

-   * 

-   * <p>

-   * The table containing the signature text will be appended. As specified by

-   * the parameters, the signature will be appended to the last page, or a plain

-   * new page will be created for the signature to hold.

-   * </p>

-   * <p>

-   * The table will be completely wrapped by an XObject, which will also be

-   * indirectly referenced by the Egiz Dictionary. This will ease the

-   * verification process.

-   * </p>

-   * <p>

-   * An Egiz Dictionary will be added to the new document that contains

-   * information about the signature. Basically the size of the original

-   * document and the reference of the signature table.

-   * </p>

-   * 

-   * @param original_document

-   *          The original document.

-   * @param pdf_table

-   *          The PdfPTable that contains the signature block.

-   * @param pi

-   *          The PositioningInstruction telling the algorithm where to place

-   *          the signature block.

-   * @param invisible_field_definitions

-   *          List of invisible field definitions to be added to the egiz dict.

-   *          May be null or empty, if there are no invisible fields.

-   * @param invisibleKZString

-   *          If not null, thins String is the KZ String to be written into the

-   *          /Data array.

-   * @return Returns the new document.

-   * @throws PresentableException

-   *           Forwarded exception.

-   */

-  public static IncrementalUpdateInformation writeIncrementalUpdate(PdfDataSource original_document, DataSink written_pdf, PdfPTable pdf_table, String profile, PositioningInstruction pi,

-      List variable_field_definitions, List all_field_definitions, List invisible_field_definitions, String invisibleKZString, TimeStamper timeStamper, SignatorInformation si, SignatureObject so) throws PresentableException

-  {

-    try

-    {

-      IncrementalUpdateInformation iui = new IncrementalUpdateInformation();

-      iui.original_document = original_document;

-      iui.start_index = original_document.getLength();

-      iui.signProfile = profile;

-      iui.timeStamper = timeStamper;

-

-      Document.compress = true; // exthex : compress now, excluding the xobject later

-

-      // System.out.println("wprinz: STAMPING PDF");

-

-      // InputStream is = original_document.createInputStream();

-      byte[] pdf_data = original_document.getAsByteArray();

-      PdfReader reader = new PdfReader(pdf_data);

-      PDFASUtils.checkReaderPermissions(reader);

-      // is.close();

-

-      OutputStream baos = written_pdf.createOutputStream("application/pdf");

-      // ByteArrayOutputStream baos = new ByteArrayOutputStream();

-

-      // IMPORTANT: append the new content to the original document using

-      // incremental updated

-      // The stamper allows this by setting append = true

-      boolean adobeSigField = AdobeSignatureHelper.isAdobeSignatureFieldEnabled(so.getSignatureTypeDefinition().getType());

-      PdfStamper stamper = null;     

-      if (adobeSigField) {

-         stamper = PdfStamper.createSignature(reader, baos, '\0', null, true);

-      } else {

-         stamper = new PdfStamper(reader, baos, '\0', true);

-      }

-

-      if (pi.isMakeNewPage())

-      {

-        int pdf_page_num = reader.getNumberOfPages();

-

-        Rectangle psize = reader.getPageSizeWithRotation(pdf_page_num);

-        Rectangle rect = new Rectangle(psize);

-        stamper.insertPage(pdf_page_num + 1, rect);

-      }

-

-      if (pi.getPage() < 1 || pi.getPage() > stamper.getReader().getNumberOfPages())

-      {

-        throw new PDFDocumentException(224, "The provided page (=" + pi.getPage() + ") is out of range.");

-      }

-      

-      if (SignaturePlaceholderContext.isSignaturePlaceholderDataSet() &&

-            SignaturePlaceholderContext.getSignaturePlaceholderData().getPlaceholderName() != null)

-      {

-         replacePlaceholder(stamper, pi.getPage(), SignaturePlaceholderContext.getSignaturePlaceholderData().getPlaceholderName());

-      }

-      

-      PdfContentByte content = stamper.getOverContent(pi.getPage());

-      // content = StampContent einer PageStamp.

-

-      // System.out.println("table_width = " + pdf_table.getTotalWidth() + ",

-      // table_height = " + pdf_table.getTotalHeight());

-

-      PdfTemplate table_template = content.createTemplate(pdf_table.getTotalWidth(), pdf_table.getTotalHeight());

-      table_template.setCompress(Boolean.FALSE); // do not compress sigblock because we rewrite it afterwards for bin sig      

-

-      // exthex

-      StructContentHelper structHelper = new StructContentHelper(stamper, content, pi.getPage());

-      structHelper.prepareStructData(table_template);

-      

-      pdf_table.writeSelectedRows(0, -1, 0, pdf_table.getTotalHeight(), table_template);

-

-      // table_template.moveTo(0, 0);

-      // table_template.lineTo(pdf_table.getTotalWidth(),

-      // pdf_table.getTotalHeight());

-      // table_template.stroke();

-      // table_template.moveTo(0, 0);

-      // table_template.lineTo(100, 100);

-      // table_template.stroke();

-

-      // pdf_table.writeSelectedRows(0, -1, SIGNATURE_BORDER / 2,

-      // table_position, content);

-

-            

-      structHelper.beginSigBlockContent();

-      

-      content.addTemplate(table_template, pi.getX(), pi.getY() - pdf_table.getTotalHeight());

-      

-      structHelper.endSigBlockContent();     

-      

-

-      ActualTablePos atp = new ActualTablePos();

-      atp.page = pi.getPage();

-      atp.x = pi.getX();

-      atp.y = pi.getY(); // TODO is this correct or flipped?

-      atp.width = pdf_table.getTotalWidth();

-      atp.height = pdf_table.getTotalHeight();

-      iui.actualTablePos = atp;

-      

-      structHelper.buildFigureStructData(so, table_template);

-      structHelper.buildSigBlockStructData();

-      structHelper.finishMainStructData();

-      

-      structHelper.buildVerifyLinkStructData(table_template, atp);

-      

-      // For debugging print a 100x100 grid

-      // {

-      // Rectangle psize = reader.getPageSizeWithRotation(pos.page);

-      // float page_width = psize.width();

-      // float page_height = psize.height();

-      // for (float x = 0; x < page_width; x += 100)

-      // {

-      // content.moveTo(x, 0);

-      // content.lineTo(x, page_height);

-      // content.stroke();

-      // }

-      // for (float y = 0; y < page_height; y += 100)

-      // {

-      // content.moveTo(0, y);

-      // content.lineTo(page_width, y);

-      // content.stroke();

-      // }

-      // }

-

-      // content.setLineWidth(10.0f);

-      // content.moveTo(0, 0);

-      // content.lineTo(100, 100);

-      // content.stroke();

-

-      // PdfIndirectReference page_ref =

-      // stamper.getWriter().getPageReference(signature_page);

-      // System.out.println("page_ref = " + page_ref.toString());

-

-      // PdfObject page_obj = PdfReader.getPdfObject(page_ref);

-      // System.out.println("page_obj = " + page_obj);

-

-      // PdfDictionary page_dict = (PdfDictionary) page_obj;

-      // PdfObject resources_obj = page_dict.get(PdfName.RESOURCES);

-      // System.out.println("resources_obj = " + resources_obj);

-      // PdfDictionary resources = (PdfDictionary)

-      // PdfReader.getPdfObject(resources_obj);

-      // for (Iterator it = resources.getKeys().iterator(); it.hasNext();)

-      // {

-      // PdfName key = (PdfName) it.next();

-      // PdfObject value = resources.get(key);

-      // System.out.println(" " + key + " = " + value);

-      // }

-      

-      // add the EGIZ dict:

-      if (variable_field_definitions != null)

-      {

-        createEgizDict(stamper, table_template, iui, variable_field_definitions, all_field_definitions, invisible_field_definitions, invisibleKZString);

-      }

-

-      if (adobeSigField) {

-         AdobeSignatureHelper.createAdobeSignatureField(stamper, si, so, atp, structHelper);  // here..., stamper is closed

-      } else {

-         stamper.close();

-      }

-      // System.out.println("wprinz: STAMPING FINISHED");

-

-      // just to make sure the stream is really closed

-      baos.close();//

-      //org.apache.commons.io.FileUtils.writeByteArrayToFile(new java.io.File("C:/out.pdf"), ((at.gv.egiz.pdfas.impl.output.ByteArrayDataSink) written_pdf).getByteArray());

-      // iui.signed_pdf = baos.toByteArray();

-

-      structHelper.removeCurrent();

-      return iui;

-    }

-    catch (IOException e)

-    {

-      e.printStackTrace();

-      throw new PresentableException(ErrorCode.CANNOT_WRITE_PDF, e);

-    }

-    catch (DocumentException e)

-    {

-      e.printStackTrace();

-      throw new PresentableException(ErrorCode.CANNOT_WRITE_PDF, e);

-    }

-  }

-  

-  private static void replacePlaceholder(PdfStamper stamper, int pageNr, String placeholderName) throws BadElementException, MalformedURLException, IOException, BadPdfFormatException, PresentableException {

-     Image img = Image.getInstance(SignaturePlaceholderData.class.getResource("empty.jpg"));

-     PdfImage pImg = new PdfImage(img, "Imwurscht", null);

-     PdfStamperImp stamperImp = (PdfStamperImp)stamper.getWriter();

-     PdfIndirectObject ind = stamperImp.addToBody(pImg);

-     

-     PdfDictionary resources = stamper.getReader().getPageN(pageNr).getAsDict(PdfName.RESOURCES);

-     if (ind != null && resources != null)

-     {

-        PdfDictionary xobjDict = resources.getAsDict(PdfName.XOBJECT);

-        if (xobjDict != null)

-        {

-           xobjDict.put(new PdfName(placeholderName), ind.getIndirectReference());

-           stamperImp.markUsed(resources);

-        }

-        else

-        {

-           throw new PresentableException(ErrorCode.CANNOT_WRITE_PDF, new NullPointerException("Image dictionary not found in document structure!"));

-        }

-     }

-     else

-     {

-        throw new PresentableException(ErrorCode.CANNOT_WRITE_PDF, new NullPointerException("Resource dictionary not found in document structure!"));

-     }

-  }

-  

-

-  /**

-   * Creates the EGIZ Dictionary and adds it to the document.

-   * 

-   * @param stamper

-   *          The PdfStamper.

-   * @param table_template

-   *          The Template of the Signature block.

-   * @param iui

-   *          The IncrementalUpdateInformation.

-   * @param variable_field_definitions

-   *          The field definitions.

-   * @throws IOException

-   * @throws SettingNotFoundException

-   * @throws CaptionNotFoundException

-   */

-  protected static void createEgizDict(PdfStamper stamper, PdfTemplate table_template, IncrementalUpdateInformation iui, List variable_field_definitions, List all_field_definitions,

-      List invisible_field_definitions, String invisibleKZString) throws IOException, SettingNotFoundException, CaptionNotFoundException

-  {

-    // iui.temp_ir = table_template.getIndirectReference();

-    iui.temp_ir_number = table_template.getIndirectReference().getNumber();

-    iui.temp_ir_generation = table_template.getIndirectReference().getGeneration();

-

-    byte[] content_stream = table_template.toPdf(null);

-    iui.content_stream_length = content_stream.length;

-

-    iui.replaces = determineReplacesInContentStream(content_stream, 0, content_stream.length, variable_field_definitions);

-    if (invisibleKZString == null)

-    {

-      iui.kz_list = determineKZ(content_stream, 0, content_stream.length, all_field_definitions);

-    }

-    else

-    {

-      StringInfo si = new StringInfo();

-      si.string_start = -1;

-      si.string_length = invisibleKZString.length();

-

-      iui.kz_list = new ArrayList();

-      iui.kz_list.add(si);

-    }

-

-    // PdfIndirectReference previous_egiz_dict_ind_ref =

-    // getEgizDictIndRefFromReader(reader);

-

-    PdfDictionary egiz_dict = new PdfDictionary(EGIZ_DICT_NAME);

-    egiz_dict.put(EGIZ_XOBJ_NAME, table_template.getIndirectReference());

-    egiz_dict.put(EGIZ_ODS_NAME, NUMBER_PLACEHOLDER);

-

-    // /ID

-    PdfArray kz_array = new PdfArray();

-    for (int i = 0; i < iui.kz_list.size(); i++)

-    {

-      kz_array.add(NUMBER_PLACEHOLDER); // start

-      kz_array.add(NUMBER_PLACEHOLDER); // length

-    }

-    egiz_dict.put(EGIZ_KZ_NAME, kz_array);

-

-    // ByteRanges

-    int num_replaces = calcNumReps(iui.replaces);

-    int num_holes = num_replaces + 1 + 1;

-    // +1 = the /encodings hole

-    // +1 = the /Cert

-    // +1 = the /Timestamp

-    if (iui.timeStamper != null) {

-       num_holes += 1;

-    }

-    boolean has_hidden_variable_fields = invisible_field_definitions != null && !invisible_field_definitions.isEmpty();

-    if (has_hidden_variable_fields)

-    {

-      num_holes += invisible_field_definitions.size();

-    }

-    int num_byte_ranges = num_holes + 1;

-

-    PdfArray byte_ranges_array = new PdfArray();

-    for (int i = 0; i < num_byte_ranges; i++)

-    {

-      byte_ranges_array.add(NUMBER_PLACEHOLDER); // start

-      byte_ranges_array.add(NUMBER_PLACEHOLDER); // length

-    }

-    egiz_dict.put(EGIZ_BYTERANGES_NAME, byte_ranges_array);

-

-    PdfArray encodings_array = new PdfArray();

-    encodings_array.add(new PdfName(new String(ENCODING_NIL))); // the

-    // /encodings

-    encodings_array.add(new PdfName(new String(ENCODING_NIL))); // the /Cert

-

-    // array itself

-    PdfArray replaces_array = new PdfArray();

-    replaces_array.add(new PdfName(new String(BREV_NIL, "US-ASCII"))); // the

-    // /encodings

-    replaces_array.add(new PdfName(new String(BREV_NIL, "US-ASCII"))); // the

-    // /Cert

-    

-    if (iui.timeStamper != null) {

-       encodings_array.add(new PdfName(new String(ENCODING_NIL))); // the /Timestamp

-       replaces_array.add(new PdfName(new String(BREV_NIL, "US-ASCII"))); // the /timestamp

-       

-    }

-

-    // hidden replaces

-    List hidden_replaces = null;

-    if (has_hidden_variable_fields)

-    {

-      hidden_replaces = new ArrayList();

-

-      Iterator it = invisible_field_definitions.iterator();

-      while (it.hasNext())

-      {

-        SignatureFieldDefinition sfd = (SignatureFieldDefinition) it.next();

-        byte[] brev = typeToBrev(sfd.field_name);

-        encodings_array.add(new PdfName(new String(ENCODING_WIN, "US-ASCII")));

-        replaces_array.add(new PdfName(new String(brev, "US-ASCII")));

-

-        ReplaceInfo ri = new ReplaceInfo();

-        ri.brev = brev;

-        ri.enc = ENCODING_WIN;

-        ri.sfd = sfd;

-        ri.replaces = new ArrayList();

-

-        StringInfo si = new StringInfo();

-        si.string_start = -1; // to be determined later on

-        si.string_length = sfd.placeholder_length;

-        ri.replaces.add(si);

-

-        hidden_replaces.add(ri);

-      }

-    }

-

-    // content stream replaces

-    Iterator it = iui.replaces.iterator();

-    while (it.hasNext())

-    {

-      ReplaceInfo ri = (ReplaceInfo) it.next();

-      for (int i = 0; i < ri.replaces.size(); i++)

-      {

-        byte[] brev = typeToBrev(ri.sfd.field_name);

-        encodings_array.add(new PdfName(new String(ENCODING_WIN, "US-ASCII")));

-        replaces_array.add(new PdfName(new String(brev, "US-ASCII")));

-      }

-    }

-    egiz_dict.put(EGIZ_REPLACES_NAME, replaces_array);

-

-    egiz_dict.put(EGIZ_ENCODINGS_NAME, encodings_array);

-

-    PdfArray cert_array = new PdfArray();

-    iui.cert_length = getCertificatePlaceholderLength(iui);

-    byte[] cert_bytes = new byte[iui.cert_length];

-    for (int i = 0; i < cert_bytes.length; i++)

-    {

-      cert_bytes[i] = 0;

-    }

-    PdfString cert_placeholder = new PdfString(cert_bytes);

-    cert_array.add(cert_placeholder);

-    egiz_dict.put(EGIZ_CERTIFICATE_NAME, cert_array); 

-    

-    // Timestamp    

-    if (iui.timeStamper != null) {

-       // only if handler is available

-       PdfArray timestamp_array = new PdfArray();

-       iui.timestamp_length = getTimestampPlaceholderLength(iui);

-       byte[] timestamp_bytes = new byte[iui.timestamp_length];

-       for (int i = 0; i < timestamp_bytes.length; i++)

-       {

-          timestamp_bytes[i] = 0;

-       }

-       PdfString timestamp_placeholder = new PdfString(timestamp_bytes);

-       timestamp_array.add(timestamp_placeholder);

-       egiz_dict.put(EGIZ_TIMESTAMP_NAME, timestamp_array); 

-    }

-

-    

-    // /Data array with hidden information

-    if (has_hidden_variable_fields || invisibleKZString != null)

-    {

-      PdfArray hidden_fields_array = new PdfArray();

-

-      if (invisibleKZString != null)

-      {

-        PdfString str = new PdfString(invisibleKZString);

-        hidden_fields_array.add(str);

-      }

-

-      if (has_hidden_variable_fields)

-      {

-        iui.replaces.addAll(0, hidden_replaces);

-

-        for (int i = 0; i < invisible_field_definitions.size(); i++)

-        {

-          SignatureFieldDefinition sfd = (SignatureFieldDefinition) invisible_field_definitions.get(i);

-          byte[] placeholder = new byte[sfd.placeholder_length];

-          for (int phIdx = 0; phIdx < placeholder.length; phIdx++)

-          {

-            placeholder[phIdx] = SIGN_PLACEHOLDER;

-          }

-          PdfString str = new PdfString(placeholder);

-          hidden_fields_array.add(str);

-        }

-      }

-

-      egiz_dict.put(EGIZ_DATA_NAME, hidden_fields_array);

-    }

-

-

-    PdfIndirectObject dict_ref = stamper.getWriter().addToBody(egiz_dict);

-    // iui.egiz_dict_ir = dict_ref.getIndirectReference();

-    iui.egiz_dict_ir_number = dict_ref.getIndirectReference().getNumber();

-    iui.egiz_dict_ir_generation = dict_ref.getIndirectReference().getGeneration();

-

-    PdfIndirectReference root_ref = (PdfIndirectReference) stamper.getReader().getTrailer().get(PdfName.ROOT);

-    PdfDictionary root = (PdfDictionary) PdfReader.getPdfObject(root_ref);

-    // root.put(EGIZ_DICT_NAME, dict_ref.getIndirectReference());

-    ((PdfStamperImp) stamper.getWriter()).markUsed(root);

-

-    // PdfDictionary extra_cata = stamper.getWriter().getExtraCatalog();

-    // extra_cata.put(dict_type, dict_ref.getIndirectReference());

-

-    ((PdfStamperImp) stamper.getWriter()).setEgizDictTrailerInfo(EGIZ_DICT_NAME, dict_ref.getIndirectReference());

-  }

-

-  /**

-   * Converts a field name (type) to the corresponding BREV.

-   * 

-   * @param type

-   *          The field name (type).

-   * @return Returns the corresponding BREV, or BREV_NIL if the type is not

-   *         recognized.

-   */

-  protected static byte[] typeToBrev(String type)

-  {

-    if (type.equals(SignatureTypes.SIG_DATE))

-    {

-      return BREV_DAT;

-    }

-    if (type.equals(SignatureTypes.SIG_ISSUER))

-    {

-      return BREV_ISS;

-    }

-    if (type.equals(SignatureTypes.SIG_VALUE))

-    {

-      return BREV_VAL;

-    }

-    if (type.equals(SignatureTypes.SIG_NUMBER))

-    {

-      return BREV_SNR;

-    }

-    if (type.equals(SignatureTypes.SIG_ID))

-    {

-      return BREV_SID;

-    }

-    if (type.equals(SignatureTypes.SIG_ALG))

-    {

-      return BREV_ALG;

-    }

-

-

-    return BREV_NIL;

-  }

-

-  /**

-   * Updates the information in the egiz dictionary to reflect the real offsets

-   * of the byte ranges.

-   * 

-   * <p>

-   * This replaces the "dummy numbers" in the egiz dictionary with the correct

-   * values.

-   * </p>

-   * 

-   * @param iui

-   *          The IncrementalUpdateInformation.

-   * @throws PDFDocumentException

-   */

-  public static void markByteRanges(IncrementalUpdateInformation iui) throws PDFDocumentException

-  {

-    try

-    {

-      iui.byte_ranges = new ArrayList();

-

-      int num_digits = Integer.toString(NUMBER_PLACEHOLDER.intValue()).length();

-      byte[] signed_pdf = iui.signed_pdf;

-

-      String str = iui.egiz_dict_ir_number + " " + iui.egiz_dict_ir_generation + " obj";

-      byte[] obj_bytes = ArrayUtils.add(str.getBytes("US-ASCII"), 0, (byte) 0x0A);

-      int obj_index = ByteArrayUtils.lastIndexOf(signed_pdf, obj_bytes);

-      int obj_start = obj_index + obj_bytes.length;

-

-      String ods_str = "/ODS ";

-      byte[] ods_bytes = ods_str.getBytes("US-ASCII");

-      int ods_index = ByteArrayUtils.indexOf(signed_pdf, obj_start, ods_bytes);

-      int ods_start = ods_index + ods_bytes.length;

-

-      String kz_str = "/ID[";

-      byte[] kz_bytes = kz_str.getBytes("US-ASCII");

-      int kz_index = ByteArrayUtils.indexOf(signed_pdf, obj_start, kz_bytes);

-      int kz_start = kz_index + kz_bytes.length;

-

-      String br_str = "/ByteRange[";

-      byte[] br_bytes = br_str.getBytes("US-ASCII");

-      int br_index = ByteArrayUtils.indexOf(signed_pdf, obj_start, br_bytes);

-      int array_start = br_index + br_bytes.length;

-

-      String enc_str = "/encodings[";

-      byte[] enc_bytes = enc_str.getBytes("US-ASCII");

-      int enc_index = ByteArrayUtils.indexOf(signed_pdf, obj_start, enc_bytes);

-      int enc_start = enc_index + enc_bytes.length;

-

-      String cert_str = "/Cert[(";

-      byte[] cert_bytes = cert_str.getBytes("US-ASCII");

-      int cert_index = ByteArrayUtils.indexOf(signed_pdf, obj_start, cert_bytes);

-      int cert_start = cert_index + cert_bytes.length;

-      

-      //Timestamp

-      int timestamp_index = 0;

-      int timestamp_start = 0;

-      if (iui.timeStamper != null) {

-         String timestamp_str = "/TimeStamp[(";

-         byte[] timestamp_bytes = timestamp_str.getBytes("US-ASCII");

-         timestamp_index = ByteArrayUtils.indexOf(signed_pdf, obj_start, timestamp_bytes);

-         timestamp_start = timestamp_index + timestamp_bytes.length;

-      }

-

-      replaceNumber(signed_pdf, ods_start, signed_pdf.length, num_digits);

-

-

-      int cur_pos = array_start;

-      int cur_br_start = 0;

-      

-

-      // write the /encodings byte range

-      {

-        int num_replaces = calcNumReps(iui.replaces);

-        int num_holes = num_replaces + 1 + 1; 

-        // +1 = the /encodings hole

-        // +1 = the /Cert        

-        //  +1 = the /Timestamp

-        if (iui.timeStamper != null) {

-           num_holes += 1;

-        }

-

-        int enc_length = (1 + 3) * num_holes;

-

-        StringInfo byte_range = new StringInfo();

-        byte_range.string_start = cur_br_start;

-        byte_range.string_length = enc_start;

-        iui.byte_ranges.add(byte_range);

-

-        replaceNumber(signed_pdf, cur_pos, byte_range.string_start, num_digits);

-        cur_pos += num_digits;

-        cur_pos += 1;

-        replaceNumber(signed_pdf, cur_pos, byte_range.string_length, num_digits);

-        cur_pos += num_digits;

-        cur_pos += 1;

-

-        cur_br_start = enc_start + enc_length;

-

-        iui.enc_start = enc_start;

-        iui.enc_length = enc_length;

-      }

-

-      // write the /Cert byte range

-      {

-        StringInfo byte_range = new StringInfo();

-        byte_range.string_start = cur_br_start;

-        byte_range.string_length = cert_start - cur_br_start;

-        iui.byte_ranges.add(byte_range);

-

-        replaceNumber(signed_pdf, cur_pos, byte_range.string_start, num_digits);

-        cur_pos += num_digits;

-        cur_pos += 1;

-        replaceNumber(signed_pdf, cur_pos, byte_range.string_length, num_digits);

-        cur_pos += num_digits;

-        cur_pos += 1;

-

-        cur_br_start = cert_start + iui.cert_length;

-

-        iui.cert_start = cert_start;

-      }

-      

-      // write the /Timestamp byte range

-      if (iui.timeStamper != null) {

-        StringInfo byte_range = new StringInfo();

-        byte_range.string_start = cur_br_start;

-        byte_range.string_length = timestamp_start - cur_br_start;

-        iui.byte_ranges.add(byte_range);

-

-        replaceNumber(signed_pdf, cur_pos, byte_range.string_start, num_digits);

-        cur_pos += num_digits;

-        cur_pos += 1;

-        replaceNumber(signed_pdf, cur_pos, byte_range.string_length, num_digits);

-        cur_pos += num_digits;

-        cur_pos += 1;

-

-        cur_br_start = timestamp_start + iui.timestamp_length;

-

-        iui.timestamp_start = timestamp_start;

-      }      

-

-      // determine the /Data byte ranges if any

-      List ifd = iui.invisible_field_definitions;

-      if (!ifd.isEmpty() || iui.invisibleKZString != null)

-      {

-        String data_str = "/Data[(";

-        byte[] data_bytes = data_str.getBytes("US-ASCII");

-        int data_index = ByteArrayUtils.indexOf(signed_pdf, obj_start, data_bytes);

-        int data_start = data_index + data_bytes.length;

-

-        int hole_start = data_start;

-

-        if (iui.invisibleKZString != null)

-        {

-          StringInfo si = (StringInfo) iui.kz_list.get(0);

-          si.string_start = hole_start;

-          

-          hole_start += si.string_length + 2;

-        }

-

-        for (int i = 0; i < ifd.size(); i++)

-        {

-          ReplaceInfo ri = (ReplaceInfo) iui.replaces.get(i);

-          StringInfo si = (StringInfo) ri.replaces.get(0);

-          si.string_start = hole_start;

-

-          hole_start += si.string_length + 2;

-        }

-

-      }

-

-      Iterator rit = iui.replaces.iterator();

-      while (rit.hasNext())

-      {

-        ReplaceInfo ri = (ReplaceInfo) rit.next();

-

-        // byte [] value_bytes = ri.value.getBytes("ISO-8859-1");

-        // int write_pos = 0;

-

-        Iterator sit = ri.replaces.iterator();

-        while (sit.hasNext())

-        {

-          StringInfo si = (StringInfo) sit.next();

-

-          StringInfo byte_range = new StringInfo();

-          byte_range.string_start = cur_br_start;

-          byte_range.string_length = si.string_start - cur_br_start;

-          iui.byte_ranges.add(byte_range);

-

-          replaceNumber(signed_pdf, cur_pos, byte_range.string_start, num_digits);

-          cur_pos += num_digits;

-          cur_pos += 1;

-          replaceNumber(signed_pdf, cur_pos, byte_range.string_length, num_digits);

-          cur_pos += num_digits;

-          cur_pos += 1;

-

-          cur_br_start = si.string_start + si.string_length;

-        }

-

-      }

-

-      StringInfo byte_range = new StringInfo();

-      byte_range.string_start = cur_br_start;

-      byte_range.string_length = signed_pdf.length - cur_br_start;

-      iui.byte_ranges.add(byte_range);

-

-      replaceNumber(signed_pdf, cur_pos, byte_range.string_start, num_digits);

-      cur_pos += num_digits;

-      cur_pos += 1;

-      replaceNumber(signed_pdf, cur_pos, byte_range.string_length, num_digits);

-      cur_pos += num_digits;

-      cur_pos += 1;

-

-      

-      // update the Kennzeichnung byte ranges

-      cur_pos = kz_start;

-      for (int i = 0; i < iui.kz_list.size(); i++)

-      {

-        StringInfo si = (StringInfo) iui.kz_list.get(i);

-

-        replaceNumber(signed_pdf, cur_pos, si.string_start, num_digits);

-        cur_pos += num_digits;

-        cur_pos += 1;

-        replaceNumber(signed_pdf, cur_pos, si.string_length, num_digits);

-        cur_pos += num_digits;

-        cur_pos += 1;

-      }

-

-    }

-    catch (IOException e)

-    {

-      throw new PDFDocumentException(201, e);

-    }

-

-  }

-

-  /**

-   * Replaces the certificate placeholder with the certificate from the signed

-   * Signature Object.

-   * 

-   * @param iui

-   *          The IncrementalUpdateInformation.

-   * @throws PDFDocumentException

-   */

-  public static void replaceCertificate(IncrementalUpdateInformation iui) throws PDFDocumentException

-  {

-    X509Certificate certificate = iui.signed_signature_object.getX509Certificate();

-    try

-    {

-      byte[] der = certificate.getEncoded();

-      byte[] encoded = CodingHelper.encodeBase64(der).getBytes("US-ASCII");

-      byte[] escaped = Placeholder.escapePDFString(encoded);

-      if (escaped.length > iui.cert_length)

-      {

-        throw new PlaceholderException("certificate", escaped.length - iui.cert_length);

-      }

-      System.arraycopy(escaped, 0, iui.signed_pdf, iui.cert_start, escaped.length);

-    }

-    catch (CertificateEncodingException e)

-    {

-      throw new PDFDocumentException(300, e);

-    }

-    catch (UnsupportedEncodingException e)

-    {

-      throw new PDFDocumentException(300, e);

-    }

-

-    // X509Cert cert = iui.signed_signature_object.getX509Cert();

-    // // X509Certificate certificate = cert.getX509Certificate();

-    // try

-    // {

-    // byte[] encoded = cert.getCertString().getBytes("US-ASCII"); //

-    // certificate.getEncoded();

-    // byte[] escaped = Placeholder.escapePDFString(encoded);

-    // if (escaped.length > iui.cert_length)

-    // {

-    // throw new PlaceholderException("certificate", escaped.length -

-    // iui.cert_length);

-    // }

-    // System.arraycopy(escaped, 0, iui.signed_pdf, iui.cert_start,

-    // escaped.length);

-    // }

-    // // catch (CertificateEncodingException e)

-    // // {

-    // // throw new PDFDocumentException(300, e);

-    // // }

-    // catch (UnsupportedEncodingException e)

-    // {

-    // throw new PDFDocumentException(300, e);

-    // }

-  }

-

-  /**

-   * Replaces the timestam placeholder with the timestamp from the signed

-   * Signature Object.

-   * 

-   * @param iui

-   *          The IncrementalUpdateInformation.

-   * @throws PDFDocumentException

-   */

-  public static void replaceTimestamp(IncrementalUpdateInformation iui) throws PDFDocumentException

-  {

-    String timestamp = iui.signed_signature_object.getSigTimeStamp();

-    if (timestamp != null) {       

-      byte[] escaped = Placeholder.escapePDFString(timestamp.getBytes());

-      if (escaped.length > iui.timestamp_length)

-      {

-        throw new PlaceholderException("timestamp", escaped.length - iui.timestamp_length);

-      }

-      System.arraycopy(escaped, 0, iui.signed_pdf, iui.timestamp_start, escaped.length);       

-    }

-  }

-  

-  /**

-   * Replaces the placeholders with values from the signed SignatureObject.

-   * 

-   * @param iui

-   *          The IncrementalUpdateInformation.

-   * @throws PDFDocumentException

-   */

-  public static void replacePlaceholders(IncrementalUpdateInformation iui) throws PDFDocumentException

-  {

-    final int lineBreakTolerance = getLineBreakTolerance(iui); 

-    

-    final byte[] signed_pdf = iui.signed_pdf;

-

-    // int num_replaces = calcNumReps(iui.replaces);

-    // int num_holes = num_replaces + 1 + 1; // +1 = the /encodings hole; +1 =

-    // the

-    // /Cert

-

-    int encoding_entry_index = 0;

-    {// /encodings itself

-      int enc_offset = iui.enc_start + encoding_entry_index * 4;

-      signed_pdf[enc_offset] = '/';

-      System.arraycopy(ENCODING_NIL, 0, signed_pdf, enc_offset + 1, ENCODING_NIL.length);

-      encoding_entry_index++;

-    }

-    {// /Cert itself

-      int enc_offset = iui.enc_start + encoding_entry_index * 4;

-      signed_pdf[enc_offset] = '/';

-      System.arraycopy(ENCODING_NIL, 0, signed_pdf, enc_offset + 1, ENCODING_NIL.length);

-      encoding_entry_index++;

-    }

-    if (iui.signed_signature_object.getSigTimeStamp() != null)

-    {// /Timestamp itself

-       int enc_offset = iui.enc_start + encoding_entry_index * 4;

-       signed_pdf[enc_offset] = '/';

-       System.arraycopy(ENCODING_NIL, 0, signed_pdf, enc_offset + 1, ENCODING_NIL.length);

-       encoding_entry_index++;

-     }

-

-    for (int i = 0; i < iui.replaces.size(); i++)

-    {

-      ReplaceInfo ri = (ReplaceInfo) iui.replaces.get(i);

-

-      try

-      {

-        String value = ri.value;

-

-        if (value == null)

-        {

-          value = "";

-        }

-

-        byte[] encoding = ENCODING_WIN;

-        byte[] replace_bytes = Placeholder.applyWinAnsiEncoding(value);

-

-        String restored_value = Placeholder.unapplyWinAnsiEncoding(replace_bytes);

-        if (!value.equals(restored_value))

-        {

-          // debug:

-          logger.warn("WinAnsiEncoding doesn't fit - using URL instead!");

-          // /debug!

-

-          replace_bytes = Placeholder.applyURLEncoding(value);

-

-          encoding = ENCODING_URL;

-        }

-

-        for (int string_index = 0; string_index < ri.replaces.size(); string_index++)

-        {

-          int enc_offset = iui.enc_start + encoding_entry_index * 4;

-          signed_pdf[enc_offset] = '/';

-          System.arraycopy(encoding, 0, signed_pdf, enc_offset + 1, encoding.length);

-          encoding_entry_index++;

-        }

-

-        Placeholder.replacePlaceholderWithTolerance(signed_pdf, ri.replaces, replace_bytes, lineBreakTolerance);

-      }

-      catch (PlaceholderException e)

-      {

-        throw new PlaceholderException(ri.sfd.field_name, e.getMissing());

-      }

-

-    }

-  }

-

-  /**

-   * Calculates the number of actual String replaces from a given ReplaceInfo

-   * list.

-   * <p>

-   * This is used to determine the number of actual replaces that has to be

-   * carried out. Accordingly to this number, entries in the dictionary are

-   * created.

-   * </p>

-   * 

-   * @param replaces

-   *          The ReplaceInfo list.

-   * @return Returns the number of string replaces.

-   */

-  protected static int calcNumReps(List replaces)

-  {

-    int number = 0;

-    Iterator it = replaces.iterator();

-    while (it.hasNext())

-    {

-      ReplaceInfo ri = (ReplaceInfo) it.next();

-      number += ri.replaces.size();

-    }

-    return number;

-  }

-

-  /**

-   * Determines the List of ReplaceInfo objects of replaces in the content

-   * stream regarding the given field definitions.

-   * 

-   * <p>

-   * This method collects all variable String fields in a content stream and

-   * orders them according to their start offset.

-   * </p>

-   * 

-   * @param pdf

-   *          The PDF.

-   * @param begin

-   *          The start of the content stream.

-   * @param end

-   *          The end of the content stream.

-   * @param field_definitions

-   *          The field definitions that are counceled to find out which and

-   *          where varaible strings are.

-   * @return Returns the list of ReplaceInfo objects specifying the variable

-   *         areas.

-   * @throws CaptionNotFoundException

-   */

-  protected static List determineReplacesInContentStream(final byte[] pdf, int begin, int end, List field_definitions) throws CaptionNotFoundException

-  {

-    List replaces = new ArrayList();

-    try

-    {

-

-      List strings = Placeholder.parseStrings(pdf, begin, end);

-

-      for (int index = 0; index < field_definitions.size(); index++)

-      {

-        SignatureFieldDefinition sfd = (SignatureFieldDefinition) field_definitions.get(index);

-

-        if (sfd.placeholder_length > 0)

-        {

-          ReplaceInfo ri = new ReplaceInfo();

-          ri.sfd = sfd;

-          ri.replaces = new ArrayList();

-

-          byte[] caption = sfd.caption.getBytes("ISO-8859-1");

-

-          int caption_index = findIndex(strings, caption);

-          if (caption_index < 0)

-          {

-            throw new CaptionNotFoundException(sfd.caption);

-          }

-          int start_index = skipStrings(strings, caption_index, caption);

-          int next_index = findFirstNotPlaceholder(strings, start_index);

-

-          for (int i = start_index; i < next_index; i++)

-          {

-            StringInfo si = (StringInfo) strings.get(i);

-            ri.replaces.add(si);

-          }

-

-          replaces.add(ri);

-        }

-      }

-    }

-    catch (UnsupportedEncodingException e)

-    {

-      logger.error(e.getMessage(), e);

-    }

-

-    // sort replaces

-    Collections.sort(replaces, new Comparator() {

-      public int compare(Object arg0, Object arg1)

-      {

-        ReplaceInfo ri0 = (ReplaceInfo) arg0;

-        ReplaceInfo ri1 = (ReplaceInfo) arg1;

-        int start0 = ((StringInfo) ri0.replaces.get(0)).string_start;

-        int start1 = ((StringInfo) ri1.replaces.get(0)).string_start;

-        return start0 - start1;

-      }

-    });

-

-    return replaces;

-  }

-

-  /**

-   * Determines the Kennzeichnug in the content stream.

-   * 

-   * @param pdf

-   *          The PDF.

-   * @param begin

-   *          The start of the content stream.

-   * @param end

-   *          The end of the content stream.

-   * @param field_definitions

-   *          The field definitions.

-   * @return Returns the List of StringInfo objects representing the KZ field.

-   * @throws SettingNotFoundException

-   *           F.e.

-   */

-  protected static List determineKZ(final byte[] pdf, int begin, int end, List field_definitions) throws SettingNotFoundException

-  {

-    try

-    {

-      List strings = Placeholder.parseStrings(pdf, begin, end);

-

-      for (int index = 0; index < field_definitions.size(); index++)

-      {

-        SignatureFieldDefinition sfd = (SignatureFieldDefinition) field_definitions.get(index);

-

-        if (sfd.field_name.equals(SignatureTypes.SIG_KZ))

-        {

-          List kz_list = new ArrayList();

-

-          byte[] caption = sfd.caption.getBytes("ISO-8859-1");

-

-          int caption_index = findIndex(strings, caption);

-          int start_index = skipStrings(strings, caption_index, caption);

-

-          int end_index = -1;

-          for (end_index = start_index; end_index < strings.size(); end_index++)

-          {

-            StringInfo si = (StringInfo) strings.get(end_index);

-

-            if (startsWithCaption(si, field_definitions))

-            {

-              break;

-            }

-

-            kz_list.add(si);

-          }

-

-          return kz_list;

-        }

-      }

-    }

-    catch (UnsupportedEncodingException e)

-    {

-       logger.error(e.getMessage(), e);

-    }

-    throw new KZSettingNotFoundException("Field " + SignatureTypes.SIG_KZ + " not found.");

-  }

-

-  /**

-   * Finds the index of the StringInfo within the StringInfo list that has the

-   * given content (caption).

-   * 

-   * @param strings

-   *          The list of StringInfos.

-   * @param caption

-   *          The text to be matched to the strings.

-   * @return Returns the index of the found string, or -1 if no string matched.

-   */

-  protected static int findIndex(List strings, byte[] caption)

-  {

-    for (int i = 0; i < strings.size(); i++)

-    {

-      if (isCaption(strings, i, caption))

-      {

-        return i;

-      }

-    }

-    return -1;

-  }

-

-  protected static boolean isCaption(List strings, int index, byte[] caption)

-  {

-    try

-    {

-

-      ByteArrayOutputStream baos = new ByteArrayOutputStream();

-      for (int i = index; i < strings.size(); i++)

-      {

-        StringInfo si = (StringInfo) strings.get(i);

-        baos.write(si.copyStringBytes());

-      }

-      byte[] str_data = baos.toByteArray();

-      byte[] unescaped = Placeholder.unescapePDFString(str_data);

-      if (ByteArrayUtils.compareByteArrays(unescaped, 0, caption))

-      {

-        return true;

-      }

-      else

-      {

-        return false;

-      }

-    }

-    catch (IOException e)

-    {

-      logger.error(e.getMessage(), e);

-      return false;

-    }

-

-  }

-

-  protected static int skipStrings(List strings, int index, byte[] caption)

-  {

-    int length = 0;

-    for (int i = index; i < strings.size(); i++)

-    {

-      StringInfo si = (StringInfo) strings.get(i);

-      length += si.string_length;

-

-      if (length >= caption.length)

-      {

-        return i + 1;

-      }

-    }

-    return -1;

-  }

-

-  /**

-   * Tells, if the given StringInfo contains only placeholder characters.

-   * 

-   * @param si

-   *          The StringInfo.

-   * @param placeholder

-   *          The placeholder character.

-   * @return Returns true, if the string contains only the given placeholder

-   *         characters, false otherwise.

-   */

-  protected static boolean isPlaceholder(StringInfo si, byte placeholder)

-  {

-    byte[] string_bytes = si.copyStringBytes();

-    for (int i = 0; i < string_bytes.length; i++)

-    {

-      if (string_bytes[i] != placeholder)

-      {

-        return false;

-      }

-    }

-    return true;

-  }

-

-  protected static boolean startsWithCaption(StringInfo si, List field_definitions)

-  {

-    try

-    {

-      for (int i = 0; i < field_definitions.size(); i++)

-      {

-        SignatureFieldDefinition sfd = (SignatureFieldDefinition) field_definitions.get(i);

-

-        String caption = sfd.caption;

-        String str = si.getString("ISO-8859-1");

-

-        if (caption.startsWith(str))

-        {

-          return true;

-        }

-      }

-      return false;

-    }

-    catch (UnsupportedEncodingException e)

-    {

-      logger.error(e.getMessage(), e);

-      return false;

-    }

-  }

-

-  /**

-   * Finds the first string after and at the given index not being a placeholder

-   * string.

-   * 

-   * @param strings

-   *          The list of StringInfos.

-   * @param start

-   *          The index where to start the search.

-   * @return Returns the index of the first not placeholder string, or

-   *         strings.size() if no more non placeholder strings could be found.

-   */

-  protected static int findFirstNotPlaceholder(List strings, int start)

-  {

-    for (int i = start; i < strings.size(); i++)

-    {

-      StringInfo si = (StringInfo) strings.get(i);

-      if (!isPlaceholder(si, LAYOUT_PLACEHOLDER))

-      {

-        return i;

-      }

-    }

-    return strings.size();

-  }

-

-  /**

-   * Restores the given String to its placeholder.

-   * 

-   * @param pdf

-   *          The PDF.

-   * @param si

-   *          The string.

-   * @param placeholder

-   *          The placeholder the string should be filled with.

-   */

-  public static void restorePlaceholder(final byte[] pdf, StringInfo si, final byte placeholder)

-  {

-    byte[] ph = new byte[si.string_length];

-    for (int i = 0; i < ph.length; i++)

-    {

-      ph[i] = placeholder;

-    }

-    System.arraycopy(ph, 0, pdf, si.string_start, ph.length);

-  }

-

-  /**

-   * Reconstructs the replaces from the PDF and forms suitable value strings.

-   * 

-   * @param pdf

-   *          The PDF.

-   * @param brevs

-   *          The brevs.

-   * @param sis

-   *          The StringInfo objects of the strings.

-   * @return Returns the List of ReplaceInfo objects containing the restored

-   *         values.

-   * @throws PDFDocumentException

-   */

-  public static List reconstructReplaces(final byte[] pdf, byte[][] brevs, StringInfo[] sis, byte[][] encodings) throws PDFDocumentException

-  {

-    try

-    {

-      List replaces = new ArrayList();

-

-      ReplaceInfo cur_ri = null;

-

-      for (int cur = 0; cur < brevs.length; cur++)

-      {

-        if (ByteArrayUtils.compareByteArrays(brevs[cur], 0, BREV_NIL))

-        {

-          continue;

-        }

-

-        if (cur_ri == null || !ByteArrayUtils.compareByteArrays(cur_ri.brev, 0, brevs[cur]))

-        {

-        	if (cur >= encodings.length) {

-        		throw new PDFDocumentException(ErrorCode.INVALID_SIGNATURE_DICTIONARY, "Invalid EGIZ signature dictionary.");

-        	}

-          cur_ri = new ReplaceInfo();

-

-          cur_ri.replaces = new ArrayList();

-

-          cur_ri.brev = brevs[cur];

-          cur_ri.enc = encodings[cur];

-

-          replaces.add(cur_ri);

-        }

-

-        cur_ri.replaces.add(sis[cur]);

-      }

-

-      // restore value Strings

-      Iterator rit = replaces.iterator();

-      while (rit.hasNext())

-      {

-        ReplaceInfo ri = (ReplaceInfo) rit.next();

-        ri.value = Placeholder.reconstructStringFromPartition(pdf, ri.replaces, ri.enc);

-

-        // System.out.println(new String(ri.brev, "US-ASCII") + ": " +

-        // ri.value);

-      }

-

-      return replaces;

-    }

-    catch (IOException e)

-    {

-      throw new PDFDocumentException(310, e);

-    }

-

-  }

-

-  /**

-   * Reads an unsigned integer number.

-   * 

-   * @param pdf

-   *          The PDF.

-   * @param start_index

-   *          The start index of the number.

-   * @param num_digits

-   *          The number of digits.

-   * @return Returns the read number.

-   */

-  public static int readNumber(final byte[] pdf, final int start_index, final int num_digits)

-  {

-    try

-    {

-      byte[] n_bytes = new byte[num_digits];

-      System.arraycopy(pdf, start_index, n_bytes, 0, num_digits);

-      String n_string = new String(n_bytes, "US-ASCII");

-

-      int n = Integer.parseInt(n_string);

-      return n;

-    }

-    catch (UnsupportedEncodingException e)

-    {

-      logger.error(e.getMessage(), e);

-      return -1;

-    }

-  }

-

-  /**

-   * Replaces a number by the new value.

-   * 

-   * @param pdf

-   *          The PDF.

-   * @param start_index

-   *          The start index of the number.

-   * @param number

-   *          The new number.

-   * @param num_digits

-   *          The number of digits.

-   */

-  public static void replaceNumber(final byte[] pdf, final int start_index, final int number, final int num_digits)

-  {

-    try

-    {

-      if (number < 0)

-      {

-        throw new IllegalArgumentException("The given number " + number + " must not be negative.");

-      }

-      String number_string = Integer.toString(number);

-      if (number_string.length() > num_digits)

-      {

-        throw new IllegalArgumentException("The given number " + number + " has more than " + num_digits + " digits.");

-      }

-

-      int leading_zeros = num_digits - number_string.length();

-      String zeros_string = "";

-      for (int i = 0; i < leading_zeros; i++)

-      {

-        zeros_string += "0";

-      }

-

-      String total_string = zeros_string + number_string;

-      byte[] total_bytes = total_string.getBytes("US-ASCII");

-      System.arraycopy(total_bytes, 0, pdf, start_index, num_digits);

-    }

-    catch (UnsupportedEncodingException e)

-    {

-      logger.error(e.getMessage(), e);

-    }

-  }

-

-

-  // TODO old code - remove

-  // /**

-  // * For debugging purposes.

-  // *

-  // * @param args

-  // * @throws IOException

-  // */

-  // public static void main(String[] args) throws IOException

-  // {

-  // File signed_doc = new File("C:/wprinz/temp.pdf");

-  //

-  // PdfReader reader = new PdfReader(new FileInputStream(signed_doc));

-  // PdfDictionary egiz_dict = getEgizDictFromReader(reader);

-  // if (egiz_dict == null)

-  // {

-  // System.out.println("NO Egiz Dict");

-  // return;

-  // }

-  //

-  // String sig_text = extractSignatureTextOnly(egiz_dict);

-  // System.out.println("Sig Text:");

-  // System.out.println(sig_text);

-  //

-  // int ods = getOriginalDocumentSizeFromEgizDict(egiz_dict);

-  // System.out.println("Original Document Size = " + ods);

-  // }

-

-}