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| /*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is 'JSignPdf, a free application for PDF signing'.
*
* The Initial Developer of the Original Code is Josef Cacek.
* Portions created by Josef Cacek are Copyright (C) Josef Cacek. All Rights Reserved.
*
* Contributor(s): Josef Cacek.
*
* Alternatively, the contents of this file may be used under the terms
* of the GNU Lesser General Public License, version 2.1 (the "LGPL License"), in which case the
* provisions of LGPL License are applicable instead of those
* above. If you wish to allow use of your version of this file only
* under the terms of the LGPL License and not to allow others to use
* your version of this file under the MPL, indicate your decision by
* deleting the provisions above and replace them with the notice and
* other provisions required by the LGPL License. If you do not delete
* the provisions above, a recipient may use your version of this file
* under either the MPL or the LGPL License.
*/
package net.sf.jsignpdf;
import static net.sf.jsignpdf.Constants.*;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.Proxy;
import java.security.MessageDigest;
import java.security.PrivateKey;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import net.sf.jsignpdf.crl.CRLInfo;
import net.sf.jsignpdf.ssl.SSLInitializer;
import net.sf.jsignpdf.types.HashAlgorithm;
import net.sf.jsignpdf.types.PDFEncryption;
import net.sf.jsignpdf.types.RenderMode;
import net.sf.jsignpdf.types.ServerAuthentication;
import net.sf.jsignpdf.utils.FontUtils;
import net.sf.jsignpdf.utils.KeyStoreUtils;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.text.StrSubstitutor;
import org.apache.log4j.Logger;
import com.lowagie.text.Font;
import com.lowagie.text.Image;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.AcroFields;
import com.lowagie.text.pdf.OcspClientBouncyCastle;
import com.lowagie.text.pdf.PdfDate;
import com.lowagie.text.pdf.PdfDictionary;
import com.lowagie.text.pdf.PdfName;
import com.lowagie.text.pdf.PdfPKCS7;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfSignature;
import com.lowagie.text.pdf.PdfSignatureAppearance;
import com.lowagie.text.pdf.PdfStamper;
import com.lowagie.text.pdf.PdfString;
import com.lowagie.text.pdf.PdfWriter;
import com.lowagie.text.pdf.TSAClientBouncyCastle;
/**
* Main logic of signer application. It uses iText to create signature in PDF.
*
* @author Josef Cacek
*/
public class SignerLogic implements Runnable {
private final static Logger LOGGER = Logger.getLogger(SignerLogic.class);
private final BasicSignerOptions options;
/**
* Constructor with all necessary parameters.
*
* @param anOptions
* options of signer
*/
public SignerLogic(final BasicSignerOptions anOptions) {
if (anOptions == null) {
throw new NullPointerException("Options has to be filled.");
}
options = anOptions;
}
/*
* (non-Javadoc)
*
* @see java.lang.Runnable#run()
*/
public void run() {
signFile();
}
/**
* Signs a single file.
*
* @return true when signing is finished succesfully, false otherwise
*/
public boolean signFile() {
final String outFile = options.getOutFileX();
if (!validateInOutFiles(options.getInFile(), outFile)) {
LOGGER.info(RES.get("console.skippingSigning"));
return false;
}
boolean finished = false;
Throwable tmpException = null;
FileOutputStream fout = null;
try {
SSLInitializer.init(options);
final PrivateKeyInfo pkInfo = KeyStoreUtils.getPkInfo(options);
final PrivateKey key = pkInfo.getKey();
final Certificate[] chain = pkInfo.getChain();
if (ArrayUtils.isEmpty(chain)) {
// the certificate was not found
LOGGER.info(RES.get("console.certificateChainEmpty"));
return false;
}
LOGGER.info(RES.get("console.createPdfReader", options.getInFile()));
PdfReader reader;
try {
reader = new PdfReader(options.getInFile(), options.getPdfOwnerPwdStrX().getBytes());
} catch (Exception e) {
try {
reader = new PdfReader(options.getInFile(), new byte[0]);
} catch (Exception e2) {
// try to read without password
reader = new PdfReader(options.getInFile());
}
}
LOGGER.info(RES.get("console.createOutPdf", outFile));
fout = new FileOutputStream(outFile);
final HashAlgorithm hashAlgorithm = options.getHashAlgorithmX();
LOGGER.info(RES.get("console.createSignature"));
char tmpPdfVersion = '\0'; // default version - the same as input
if (reader.getPdfVersion() < hashAlgorithm.getPdfVersion()) {
// this covers also problems with visible signatures (embedded
// fonts) in PDF 1.2, because the minimal version
// for hash algorithms is 1.3 (for SHA1)
if (options.isAppendX()) {
// if we are in append mode and version should be updated
// then return false (not possible)
LOGGER.info(RES.get("console.updateVersionNotPossibleInAppendMode"));
return false;
}
tmpPdfVersion = hashAlgorithm.getPdfVersion();
LOGGER.info(RES.get("console.updateVersion", new String[] { String.valueOf(reader.getPdfVersion()),
String.valueOf(tmpPdfVersion) }));
}
final PdfStamper stp = PdfStamper.createSignature(reader, fout, tmpPdfVersion, null, options.isAppendX());
if (!options.isAppendX()) {
// we are not in append mode, let's remove existing signatures
// (otherwise we're getting to troubles)
final AcroFields acroFields = stp.getAcroFields();
@SuppressWarnings("unchecked")
final List<String> sigNames = acroFields.getSignatureNames();
for (String sigName : sigNames) {
acroFields.removeField(sigName);
}
}
if (options.isAdvanced() && options.getPdfEncryption() != PDFEncryption.NONE) {
LOGGER.info(RES.get("console.setEncryption"));
final int tmpRight = options.getRightPrinting().getRight()
| (options.isRightCopy() ? PdfWriter.ALLOW_COPY : 0)
| (options.isRightAssembly() ? PdfWriter.ALLOW_ASSEMBLY : 0)
| (options.isRightFillIn() ? PdfWriter.ALLOW_FILL_IN : 0)
| (options.isRightScreanReaders() ? PdfWriter.ALLOW_SCREENREADERS : 0)
| (options.isRightModifyAnnotations() ? PdfWriter.ALLOW_MODIFY_ANNOTATIONS : 0)
| (options.isRightModifyContents() ? PdfWriter.ALLOW_MODIFY_CONTENTS : 0);
switch (options.getPdfEncryption()) {
case PASSWORD:
stp.setEncryption(true, options.getPdfUserPwdStr(), options.getPdfOwnerPwdStrX(), tmpRight);
break;
case CERTIFICATE:
final X509Certificate encCert = KeyStoreUtils.loadCertificate(options.getPdfEncryptionCertFile());
if (encCert == null) {
LOGGER.error(RES.get("console.pdfEncError.wrongCertificateFile",
StringUtils.defaultString(options.getPdfEncryptionCertFile())));
return false;
}
if (!KeyStoreUtils.isEncryptionSupported(encCert)) {
LOGGER.error(RES
.get("console.pdfEncError.cantUseCertificate", encCert.getSubjectDN().getName()));
return false;
}
stp.setEncryption(new Certificate[] { encCert }, new int[] { tmpRight },
PdfWriter.ENCRYPTION_AES_128);
break;
default:
LOGGER.error(RES.get("console.unsupportedEncryptionType"));
return false;
}
}
final PdfSignatureAppearance sap = stp.getSignatureAppearance();
sap.setCrypto(key, chain, null, PdfSignatureAppearance.WINCER_SIGNED);
final String reason = options.getReason();
if (StringUtils.isNotEmpty(reason)) {
LOGGER.info(RES.get("console.setReason", reason));
sap.setReason(reason);
}
final String location = options.getLocation();
if (StringUtils.isNotEmpty(location)) {
LOGGER.info(RES.get("console.setLocation", location));
sap.setLocation(location);
}
final String contact = options.getContact();
if (StringUtils.isNotEmpty(contact)) {
LOGGER.info(RES.get("console.setContact", contact));
sap.setContact(contact);
}
LOGGER.info(RES.get("console.setCertificationLevel"));
sap.setCertificationLevel(options.getCertLevelX().getLevel());
if (options.isVisible()) {
// visible signature is enabled
LOGGER.info(RES.get("console.configureVisible"));
LOGGER.info(RES.get("console.setAcro6Layers", Boolean.toString(options.isAcro6Layers())));
sap.setAcro6Layers(options.isAcro6Layers());
final String tmpImgPath = options.getImgPath();
if (tmpImgPath != null) {
LOGGER.info(RES.get("console.createImage", tmpImgPath));
final Image img = Image.getInstance(tmpImgPath);
LOGGER.info(RES.get("console.setSignatureGraphic"));
sap.setSignatureGraphic(img);
}
final String tmpBgImgPath = options.getBgImgPath();
if (tmpBgImgPath != null) {
LOGGER.info(RES.get("console.createImage", tmpBgImgPath));
final Image img = Image.getInstance(tmpBgImgPath);
LOGGER.info(RES.get("console.setImage"));
sap.setImage(img);
}
LOGGER.info(RES.get("console.setImageScale"));
sap.setImageScale(options.getBgImgScale());
LOGGER.info(RES.get("console.setL2Text"));
final String signer = PdfPKCS7.getSubjectFields((X509Certificate) chain[0]).getField("CN");
final String timestamp = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss z").format(sap.getSignDate()
.getTime());
if (options.getL2Text() != null) {
final Map<String, String> replacements = new HashMap<String, String>();
replacements.put(L2TEXT_PLACEHOLDER_SIGNER, StringUtils.defaultString(signer));
replacements.put(L2TEXT_PLACEHOLDER_TIMESTAMP, timestamp);
replacements.put(L2TEXT_PLACEHOLDER_LOCATION, StringUtils.defaultString(location));
replacements.put(L2TEXT_PLACEHOLDER_REASON, StringUtils.defaultString(reason));
replacements.put(L2TEXT_PLACEHOLDER_CONTACT, StringUtils.defaultString(contact));
final String l2text = StrSubstitutor.replace(options.getL2Text(), replacements);
sap.setLayer2Text(l2text);
} else {
final StringBuilder buf = new StringBuilder();
buf.append(RES.get("default.l2text.signedBy")).append(" ").append(signer).append('\n');
buf.append(RES.get("default.l2text.date")).append(" ").append(timestamp);
if (StringUtils.isNotEmpty(reason))
buf.append('\n').append(RES.get("default.l2text.reason")).append(" ").append(reason);
if (StringUtils.isNotEmpty(location))
buf.append('\n').append(RES.get("default.l2text.location")).append(" ").append(location);
sap.setLayer2Text(buf.toString());
}
if (FontUtils.getL2BaseFont() != null) {
sap.setLayer2Font(new Font(FontUtils.getL2BaseFont(), options.getL2TextFontSize()));
}
LOGGER.info(RES.get("console.setL4Text"));
sap.setLayer4Text(options.getL4Text());
LOGGER.info(RES.get("console.setRender"));
RenderMode renderMode = options.getRenderMode();
if (renderMode == RenderMode.GRAPHIC_AND_DESCRIPTION && sap.getSignatureGraphic() == null) {
LOGGER.warn("Render mode of visible signature is set to GRAPHIC_AND_DESCRIPTION, but no image is loaded. Fallback to DESCRIPTION_ONLY.");
LOGGER.info(RES.get("console.renderModeFallback"));
renderMode = RenderMode.DESCRIPTION_ONLY;
}
sap.setRender(renderMode.getRender());
LOGGER.info(RES.get("console.setVisibleSignature"));
sap.setVisibleSignature(
new Rectangle(options.getPositionLLX(), options.getPositionLLY(), options.getPositionURX(),
options.getPositionURY()), options.getPage(), null);
}
LOGGER.info(RES.get("console.processing"));
final PdfSignature dic = new PdfSignature(PdfName.ADOBE_PPKLITE, new PdfName("adbe.pkcs7.detached"));
if (!StringUtils.isEmpty(reason)) {
dic.setReason(sap.getReason());
}
if (!StringUtils.isEmpty(location)) {
dic.setLocation(sap.getLocation());
}
if (!StringUtils.isEmpty(contact)) {
dic.setContact(sap.getContact());
}
dic.setDate(new PdfDate(sap.getSignDate()));
sap.setCryptoDictionary(dic);
final Proxy tmpProxy = options.createProxy();
final CRLInfo crlInfo = new CRLInfo(options, chain);
// CRLs are stored twice in PDF c.f.
// PdfPKCS7.getAuthenticatedAttributeBytes
final int contentEstimated = (int) (Constants.DEFVAL_SIG_SIZE + 2L * crlInfo.getByteCount());
final Map<PdfName, Integer> exc = new HashMap<PdfName, Integer>();
exc.put(PdfName.CONTENTS, new Integer(contentEstimated * 2 + 2));
sap.preClose(exc);
PdfPKCS7 sgn = new PdfPKCS7(key, chain, crlInfo.getCrls(), hashAlgorithm.getAlgorithmName(), null, false);
InputStream data = sap.getRangeStream();
final MessageDigest messageDigest = MessageDigest.getInstance(hashAlgorithm.getAlgorithmName());
byte buf[] = new byte[8192];
int n;
while ((n = data.read(buf)) > 0) {
messageDigest.update(buf, 0, n);
}
byte hash[] = messageDigest.digest();
Calendar cal = Calendar.getInstance();
byte[] ocsp = null;
if (options.isOcspEnabledX() && chain.length >= 2) {
LOGGER.info(RES.get("console.getOCSPURL"));
String url = PdfPKCS7.getOCSPURL((X509Certificate) chain[0]);
if (StringUtils.isEmpty(url)) {
// get from options
LOGGER.info(RES.get("console.noOCSPURL"));
url = options.getOcspServerUrl();
}
if (!StringUtils.isEmpty(url)) {
LOGGER.info(RES.get("console.readingOCSP", url));
final OcspClientBouncyCastle ocspClient = new OcspClientBouncyCastle((X509Certificate) chain[0],
(X509Certificate) chain[1], url);
ocspClient.setProxy(tmpProxy);
ocsp = ocspClient.getEncoded();
}
}
byte sh[] = sgn.getAuthenticatedAttributeBytes(hash, cal, ocsp);
sgn.update(sh, 0, sh.length);
TSAClientBouncyCastle tsc = null;
if (options.isTimestampX() && !StringUtils.isEmpty(options.getTsaUrl())) {
LOGGER.info(RES.get("console.creatingTsaClient"));
if (options.getTsaServerAuthn() == ServerAuthentication.PASSWORD) {
tsc = new TSAClientBouncyCastle(options.getTsaUrl(),
StringUtils.defaultString(options.getTsaUser()), StringUtils.defaultString(options
.getTsaPasswd()));
} else {
tsc = new TSAClientBouncyCastle(options.getTsaUrl());
}
tsc.setProxy(tmpProxy);
final String policyOid = options.getTsaPolicy();
if (StringUtils.isNotEmpty(policyOid)) {
LOGGER.info(RES.get("console.settingTsaPolicy", policyOid));
tsc.setPolicy(policyOid);
}
}
byte[] encodedSig = sgn.getEncodedPKCS7(hash, cal, tsc, ocsp);
if (contentEstimated + 2 < encodedSig.length) {
System.err.println("SigSize - contentEstimated=" + contentEstimated + ", sigLen=" + encodedSig.length);
throw new Exception("Not enough space");
}
byte[] paddedSig = new byte[contentEstimated];
System.arraycopy(encodedSig, 0, paddedSig, 0, encodedSig.length);
PdfDictionary dic2 = new PdfDictionary();
dic2.put(PdfName.CONTENTS, new PdfString(paddedSig).setHexWriting(true));
LOGGER.info(RES.get("console.closeStream"));
sap.close(dic2);
fout.close();
fout = null;
finished = true;
} catch (Exception e) {
LOGGER.error(RES.get("console.exception"), e);
} catch (OutOfMemoryError e) {
LOGGER.fatal(RES.get("console.memoryError"), e);
} finally {
if (fout != null) {
try {
fout.close();
} catch (Exception e) {
e.printStackTrace();
}
}
LOGGER.info(RES.get("console.finished." + (finished ? "ok" : "error")));
options.fireSignerFinishedEvent(tmpException);
}
return finished;
}
/**
* Validates if input and output files are valid for signing.
*
* @param inFile
* input file
* @param outFile
* output file
* @return true if valid, false otherwise
*/
private boolean validateInOutFiles(final String inFile, final String outFile) {
LOGGER.info(RES.get("console.validatingFiles"));
if (StringUtils.isEmpty(inFile) || StringUtils.isEmpty(outFile)) {
LOGGER.info(RES.get("console.fileNotFilled.error"));
return false;
}
final File tmpInFile = new File(inFile);
final File tmpOutFile = new File(outFile);
if (!(tmpInFile.exists() && tmpInFile.isFile() && tmpInFile.canRead())) {
LOGGER.info(RES.get("console.inFileNotFound.error"));
return false;
}
if (tmpInFile.getAbsolutePath().equals(tmpOutFile.getAbsolutePath())) {
LOGGER.info(RES.get("console.filesAreEqual.error"));
return false;
}
return true;
}
} |
Débutant - API Path
Répondre avec citation
), que je trouve la variable où est renseignée le nom de répertoire entré, comment s'enregistre le document de sortie (car il faut soit : rien renseigner et il se met dans le même répertoire + même nom avec "_signed" en plus soit : avoir renseigner le chemin de sortie AVEC son nom) et ce qu'il se passe dans l'appli lorsqu'on "signe" pour appeler ce même code lorsqu'il y a un nouveau document dans le répertoire
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