further sign stuff

src/main/java/stirling/software/SPDF/config/Beans.java

@@ -52,15 +52,15 @@ public class Beans implements WebMvcConfigurer {
         return slr;
     }
 
-    @Bean
+//    @Bean
-    public MessageSource messageSource() {
+//    public MessageSource messageSource() {
-        ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
+//        ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
-        //messageSource.setBasename("classpath:messages");
+//        //messageSource.setBasename("classpath:messages");
-        messageSource.setDefaultEncoding("UTF-8");
+//        messageSource.setDefaultEncoding("UTF-8");
-        messageSource.setUseCodeAsDefaultMessage(true);
+//        messageSource.setUseCodeAsDefaultMessage(true);
-        messageSource.setDefaultLocale(Locale.UK); // setting default locale
+//        messageSource.setDefaultLocale(Locale.UK); // setting default locale
-        return messageSource;
+//        return messageSource;
-    }
+//    }
 
     
 }

src/main/java/stirling/software/SPDF/controller/api/security/CertSignController.java

@@ -44,6 +44,9 @@ import org.springframework.web.multipart.MultipartFile;
 
 import com.itextpdf.kernel.pdf.*;
 import com.itextpdf.signatures.*;
+
+import stirling.software.SPDF.utils.PdfUtils;
+
 import org.bouncycastle.jce.provider.BouncyCastleProvider;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
@@ -55,7 +58,7 @@ import java.security.cert.Certificate;
 import java.security.cert.CertificateFactory;
 import java.security.cert.X509Certificate;
 
-
+import com.itextpdf.kernel.geom.Rectangle;
 @RestController
 public class CertSignController {
 
@@ -66,25 +69,38 @@ public class CertSignController {
     }
 
     @PostMapping(consumes = "multipart/form-data", value = "/cert-sign")
-    public ResponseEntity<String> signPDF(
+    public ResponseEntity<byte[]> signPDF(
             @RequestParam("pdf") MultipartFile pdf,
+            @RequestParam(value = "certType", required = false) String certType,
             @RequestParam(value = "key", required = false) MultipartFile privateKeyFile,
             @RequestParam(value = "cert", required = false) MultipartFile certFile,
             @RequestParam(value = "p12", required = false) MultipartFile p12File,
-            @RequestParam(value = "password", required = false) String password) throws Exception {
+            @RequestParam(value = "password", required = false) String password,
+            @RequestParam(value = "showSignature", required = false) Boolean showSignature,
+            @RequestParam(value = "reason", required = false) String reason,
+            @RequestParam(value = "location", required = false) String location,
+            @RequestParam(value = "name", required = false) String name,
+            @RequestParam(value = "pageNumber", required = false) Integer pageNumber) throws Exception {
+        
         BouncyCastleProvider provider = new BouncyCastleProvider();
         Security.addProvider(provider);
 
         PrivateKey privateKey = null;
         X509Certificate cert = null;
         
+        if (certType != null) {
+            switch (certType) {
+                case "PKCS12":
                     if (p12File != null) {
                         KeyStore ks = KeyStore.getInstance("PKCS12");
                         ks.load(new ByteArrayInputStream(p12File.getBytes()), password.toCharArray());
                         String alias = ks.aliases().nextElement();
                         privateKey = (PrivateKey) ks.getKey(alias, password.toCharArray());
                         cert = (X509Certificate) ks.getCertificate(alias);
-        } else {
+                    }
+                    break;
+                case "PEM":
+                    if (privateKeyFile != null && certFile != null) {
                         // Load private key
                         KeyFactory keyFactory = KeyFactory.getInstance("RSA", provider);
                         if (isPEM(privateKeyFile.getBytes())) {
@@ -101,6 +117,9 @@ public class CertSignController {
                             cert = (X509Certificate) certFactory.generateCertificate(new ByteArrayInputStream(certFile.getBytes()));
                         }
                     }
+                    break;
+            }
+        }
 
         // Set up the PDF reader and stamper
         PdfReader reader = new PdfReader(new ByteArrayInputStream(pdf.getBytes()));
@@ -112,6 +131,42 @@ public class CertSignController {
                 .setReason("Test")
                 .setLocation("TestLocation");
 
+        if (showSignature != null && showSignature) {
+        	// Get the page size
+        	PdfPage page = signer.getDocument().getPage(1);
+        	Rectangle pageSize = page.getPageSize();
+
+        	// Define the size of the signature rectangle
+        	float sigWidth = 200;  // adjust this as needed
+        	float sigHeight = 100; // adjust this as needed
+
+        	// Define the margins from the page edges
+        	float marginRight = 36; // adjust this as needed
+        	float marginBottom = 36; // adjust this as needed
+
+        	// Define the position and dimension of the signature field
+        	Rectangle rect = new Rectangle(
+        	    pageSize.getRight() - sigWidth - marginRight, 
+        	    pageSize.getBottom() + marginBottom, 
+        	    sigWidth, 
+        	    sigHeight
+        	);
+            
+            // Creating the appearance
+            appearance
+                .setPageRect(rect)
+                .setPageNumber(pageNumber)
+                .setReason(reason)
+                .setLocation(location)
+                .setLayer2Text(name) // Set the signer name to be displayed in the signature field
+                .setReuseAppearance(false);
+            signer.setFieldName("sig");
+                
+            signer.setFieldName("sig");
+        } else {
+            appearance.setRenderingMode(PdfSignatureAppearance.RenderingMode.DESCRIPTION);
+        }
+        
         // Set up the signer
         PrivateKeySignature pks = new PrivateKeySignature(privateKey, DigestAlgorithms.SHA256, provider.getName());
         IExternalSignature pss = new PrivateKeySignature(privateKey, DigestAlgorithms.SHA256, provider.getName());
@@ -120,13 +175,48 @@ public class CertSignController {
         // Call iTex7 to sign the PDF
         signer.signDetached(digest, pks, new Certificate[] {cert}, null, null, null, 0, PdfSigner.CryptoStandard.CMS);
 
-        // This is just an example, you might want to save this signed PDF into your system or send it back in the response.
+        
-        // For simplicity, we will just print out the size of the signed PDF.
         System.out.println("Signed PDF size: " + signedPdf.size());
 
-        return ResponseEntity.ok("Signed PDF successfully");
+        System.out.println("PDF signed = " + isPdfSigned(signedPdf.toByteArray()));
+        return PdfUtils.bytesToWebResponse(signedPdf.toByteArray(), "example.pdf");
     }
 
+public boolean isPdfSigned(byte[] pdfData) throws IOException {
+    InputStream pdfStream = new ByteArrayInputStream(pdfData);
+    PdfDocument pdfDoc = new PdfDocument(new PdfReader(pdfStream));
+    SignatureUtil signatureUtil = new SignatureUtil(pdfDoc);
+    List<String> names = signatureUtil.getSignatureNames();
+
+    boolean isSigned = false;
+
+    for (String name : names) {
+        PdfPKCS7 pkcs7 = signatureUtil.readSignatureData(name);
+        if (pkcs7 != null) {
+            System.out.println("Signature found.");
+
+            // Log certificate details
+            Certificate[] signChain = pkcs7.getSignCertificateChain();
+            for (Certificate cert : signChain) {
+                if (cert instanceof X509Certificate) {
+                    X509Certificate x509 = (X509Certificate) cert;
+                    System.out.println("Certificate Details:");
+                    System.out.println("Subject: " + x509.getSubjectDN());
+                    System.out.println("Issuer: " + x509.getIssuerDN());
+                    System.out.println("Serial: " + x509.getSerialNumber());
+                    System.out.println("Not Before: " + x509.getNotBefore());
+                    System.out.println("Not After: " + x509.getNotAfter());
+                }
+            }
+
+            isSigned = true;
+        }
+    }
+
+    pdfDoc.close();
+
+    return isSigned;
+}
     private byte[] parsePEM(byte[] content) throws IOException {
         PemReader pemReader = new PemReader(new InputStreamReader(new ByteArrayInputStream(content)));
         return pemReader.readPemObject().getContent();

src/main/java/stirling/software/SPDF/controller/web/SecurityWebController.java

@@ -34,4 +34,11 @@ public class SecurityWebController {
         model.addAttribute("currentPage", "add-watermark");
         return "security/add-watermark";
     }
+    
+    @GetMapping("/cert-sign")
+    @Hidden
+    public String certSignForm(Model model) {
+        model.addAttribute("currentPage", "cert-sign");
+        return "security/cert-sign";
+    }
 }

src/main/resources/messages_en_GB.properties

@@ -129,6 +129,17 @@ downloadPdf=Download PDF
 text=Text
 font=Font
 
+certSign.title=Certificate Signing
+certSign.header=Sign a PDF with your certificate
+certSign.selectPDF=Select a PDF File for Signing: 
+certSign.selectKey=Select Your Private Key File (PKCS#8 format, could be .pem or .der): 
+certSign.selectCert=Select Your Certificate File (X.509 format, could be .pem or .der): 
+certSign.selectP12=Select Your PKCS#12 Keystore File (.p12 or .pfx) (Optional, If provided, it should contain your private key and certificate): 
+certSign.password=Enter Your Keystore or Private Key Password (If Any): 
+certSign.submit=Sign PDF
+
+
+
 removeBlanks.title=Remove Blanks
 removeBlanks.header=Remove Blank Pages
 removeBlanks.threshold=Threshold:

src/main/resources/templates/fragments/common.html

@@ -218,7 +218,7 @@ document.addEventListener("DOMContentLoaded", function () {
     </dialog>
 </th:block>
 
-<th:block th:fragment="fileSelector(name, multiple)"  th:with="accept=${accept} ?: '*/*', inputText=${inputText} ?: #{pdfPrompt}, remoteCall=${remoteCall} ?: 'true'">
+<th:block th:fragment="fileSelector(name, multiple)"  th:with="accept=${accept} ?: '*/*', inputText=${inputText} ?: #{pdfPrompt}, remoteCall=${remoteCall} ?: 'true', notRequired=${notRequired} ?: false">
     <script>
         $(document).ready(function() {
             $('form').submit(async function(event) {
@@ -486,7 +486,7 @@ document.addEventListener("DOMContentLoaded", function () {
 
     <div class="custom-file-chooser">
         <div class="custom-file">
-            <input type="file" class="custom-file-input" th:name="${name}" th:id="${name}+'-input'" th:accept="${accept}" multiple required>
+            <input type="file" class="custom-file-input" th:name="${name}" th:id="${name}+'-input'" th:accept="${accept}" multiple th:classappend="${notRequired ? '' : 'required'}">
             <label class="custom-file-label" th:for="${name}+'-input'" th:text="${inputText}"></label>
         </div>
         <div class="selected-files"></div>

src/main/resources/templates/security/cert-sign.html

@@ -0,0 +1,134 @@
+<!DOCTYPE html>
+<html th:lang="${#locale.toString()}"
+	th:lang-direction="#{language.direction}"
+	xmlns:th="http://www.thymeleaf.org">
+
+<th:block
+	th:insert="~{fragments/common :: head(title=#{certSign.title})}"></th:block>
+
+<body>
+	<div id="page-container">
+		<div id="content-wrap">
+			<div th:insert="~{fragments/navbar.html :: navbar}"></div>
+			<br> <br>
+			<div class="container">
+				<div class="row justify-content-center">
+					<div class="col-md-6">
+						<h2 th:text="#{certSign.header}"></h2>
+
+						<form action="/cert-sign" method="post"
+							enctype="multipart/form-data">
+							<div class="form-group">
+								<label th:text="#{certSign.selectPDF}"></label>
+								<div
+									th:replace="~{fragments/common :: fileSelector(name='pdf', multiple=false, accept='application/pdf')}"></div>
+							</div>
+							<div class="form-group">
+								<label for="certType">Certificate Type</label> <select
+									class="form-control" id="certType" name="certType">
+									<option value="">-- Select --</option>
+									<option value="PKCS12">PKCS12</option>
+									<option value="PEM">PEM</option>
+								</select>
+							</div>
+
+							<div class="form-group" id="p12Group" style="display: none;">
+								<label th:text="#{certSign.selectP12}"></label>
+								<div
+									th:replace="~{fragments/common :: fileSelector(name='p12', notRequired=true, multiple=false, accept='.p12,.pfx')}"></div>
+							</div>
+
+							<div id="pemGroup" style="display: none;">
+								<div class="form-group">
+									<label th:text="#{certSign.selectKey}"></label>
+									<div
+										th:replace="~{fragments/common :: fileSelector(name='key', multiple=false, notRequired=true, accept='.pem,.der')}"></div>
+								</div>
+								<div class="form-group">
+									<label th:text="#{certSign.selectCert}"></label>
+									<div
+										th:replace="~{fragments/common :: fileSelector(name='cert', multiple=false, notRequired=true, accept='.pem,.der')}"></div>
+								</div>
+							</div>
+
+							<div class="form-group">
+								<label th:text="#{certSign.password}"></label> <input
+									type="password" class="form-control" id="password"
+									name="password">
+							</div>
+							<div class="form-group">
+								<label><input type="checkbox" id="showSignature"
+									name="showSignature"> Show Signature</label>
+							</div>
+
+							<div id="signatureDetails" style="display: none;">
+								<div class="form-group">
+									<label for="reason">Reason</label> <input type="text"
+										class="form-control" id="reason" name="reason">
+								</div>
+								<div class="form-group">
+									<label for="location">Location</label> <input type="text"
+										class="form-control" id="location" name="location">
+								</div>
+								<div class="form-group">
+									<label for="name">Name</label> <input type="text"
+										class="form-control" id="name" name="name">
+								</div>
+								<div class="form-group">
+									<label for="pageNumber">Page Number</label> <input
+										type="number" class="form-control" id="pageNumber"
+										name="pageNumber" min="1">
+								</div>
+							</div>
+
+							<script type="text/javascript">
+								document
+										.getElementById('certType')
+										.addEventListener(
+												'change',
+												function() {
+													var p12Group = document
+															.getElementById('p12Group');
+													var pemGroup = document
+															.getElementById('pemGroup');
+													if (this.value === 'PKCS12') {
+														p12Group.style.display = 'block';
+														pemGroup.style.display = 'none';
+													} else if (this.value === 'PEM') {
+														p12Group.style.display = 'none';
+														pemGroup.style.display = 'block';
+													} else {
+														p12Group.style.display = 'none';
+														pemGroup.style.display = 'none';
+													}
+												});
+
+								document
+										.getElementById('showSignature')
+										.addEventListener(
+												'change',
+												function() {
+													var signatureDetails = document
+															.getElementById('signatureDetails');
+													if (this.checked) {
+														signatureDetails.style.display = 'block';
+													} else {
+														signatureDetails.style.display = 'none';
+													}
+												});
+							</script>
+
+
+							<div class="form-group text-center">
+								<button type="submit" id="submitBtn" class="btn btn-primary"
+									th:text="#{certSign.submit}"></button>
+							</div>
+						</form>
+					</div>
+				</div>
+			</div>
+		</div>
+		<div th:insert="~{fragments/footer.html :: footer}"></div>
+	</div>
+</body>
+</html>