compress finalise, cert test, locale test

build.gradle

@@ -24,8 +24,9 @@ dependencies {
     
 	//general PDF
     implementation 'org.apache.pdfbox:pdfbox:2.0.28'
-    
+    implementation 'org.bouncycastle:bcprov-jdk15on:1.70'
-    
+    implementation 'org.bouncycastle:bcpkix-jdk15on:1.70' 
+    implementation 'com.itextpdf:itext7-core:7.2.5'
     implementation 'org.springframework.boot:spring-boot-starter-actuator'
     implementation 'io.micrometer:micrometer-core'
     

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

@@ -2,8 +2,10 @@ package stirling.software.SPDF.config;
 
 import java.util.Locale;
 
+import org.springframework.context.MessageSource;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.support.ReloadableResourceBundleMessageSource;
 import org.springframework.web.servlet.LocaleResolver;
 import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@@ -50,4 +52,15 @@ public class Beans implements WebMvcConfigurer {
         return slr;
     }
 
+    @Bean
+    public MessageSource messageSource() {
+        ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
+        //messageSource.setBasename("classpath:messages");
+        messageSource.setDefaultEncoding("UTF-8");
+        messageSource.setUseCodeAsDefaultMessage(true);
+        messageSource.setDefaultLocale(Locale.UK); // setting default locale
+        return messageSource;
+    }
+
+    
 }

src/main/java/stirling/software/SPDF/controller/api/other/CompressController.java

@@ -56,8 +56,10 @@ public class CompressController {
         }
 
         Long expectedOutputSize = 0L;
-        if (expectedOutputSizeString != null) {
+        boolean autoMode = false;
+        if (expectedOutputSizeString != null && expectedOutputSizeString.length() > 1 ) {
             expectedOutputSize = PdfUtils.convertSizeToBytes(expectedOutputSizeString);
+            autoMode = true;
         }
 
         // Save the uploaded file to a temporary location
@@ -69,8 +71,8 @@ public class CompressController {
         // Prepare the output file path
         Path tempOutputFile = Files.createTempFile("output_", ".pdf");
 
-        // Determine initial optimization level based on expected size reduction, only if optimizeLevel is not provided
+        // Determine initial optimization level based on expected size reduction, only if in autoMode
-        if(optimizeLevel == null) {
+        if(autoMode) {
             double sizeReductionRatio = expectedOutputSize / (double) inputFileSize;
             if (sizeReductionRatio > 0.7) {
                 optimizeLevel = 1;
@@ -79,12 +81,12 @@ public class CompressController {
             } else if (sizeReductionRatio > 0.35) {
                 optimizeLevel = 3;
             } else {
-                optimizeLevel = 4;
+                optimizeLevel = 3;
             }
         }
 
-        boolean sizeMet = expectedOutputSize == 0L;
+        boolean sizeMet = false;
-        while (!sizeMet && optimizeLevel <= 5) {
+        while (!sizeMet && optimizeLevel <= 4) {
             // Prepare the Ghostscript command
             List<String> command = new ArrayList<>();
             command.add("gs");
@@ -99,12 +101,9 @@ public class CompressController {
                 command.add("-dPDFSETTINGS=/printer");
                 break;    
             case 3:
-                command.add("-dPDFSETTINGS=/default");
-                break;
-            case 4:
                 command.add("-dPDFSETTINGS=/ebook");
                 break;
-            case 5:
+            case 4:
                 command.add("-dPDFSETTINGS=/screen");
                 break;
             default:
@@ -119,20 +118,27 @@ public class CompressController {
 
             int returnCode = ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT).runCommandWithOutputHandling(command);
 
-            // Check if file size is within expected size
+            // Check if file size is within expected size or not auto mode so instantly finish
             long outputFileSize = Files.size(tempOutputFile);
-            if (outputFileSize <= expectedOutputSize) {
+            if (outputFileSize <= expectedOutputSize || !autoMode) {
                 sizeMet = true;
             } else {
                 // Increase optimization level for next iteration
                 optimizeLevel++;
-                System.out.println("Increasing ghostscript optimisation level to " + optimizeLevel);
+                if(autoMode && optimizeLevel > 3) {
+                    System.out.println("Skipping level 4 due to bad results in auto mode");
+                    sizeMet = true;
+                } else if(optimizeLevel == 5) {
+                    
+                } else {
+                    System.out.println("Increasing ghostscript optimisation level to " + optimizeLevel);
+                }
             }
         }
 
         
 
-        if (expectedOutputSize != null) {
+        if (expectedOutputSize != null && autoMode) {
             long outputFileSize = Files.size(tempOutputFile);
             if (outputFileSize > expectedOutputSize) {
                 try (PDDocument doc = PDDocument.load(new File(tempOutputFile.toString()))) {

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

@@ -0,0 +1,144 @@
+package stirling.software.SPDF.controller.api.security;
+
+import java.io.ByteArrayOutputStream;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.NoSuchProviderException;
+import java.security.Principal;
+import java.security.PrivateKey;
+import java.security.Security;
+import java.security.UnrecoverableKeyException;
+import java.security.cert.Certificate;
+import java.security.cert.CertificateEncodingException;
+import java.security.cert.CertificateException;
+import java.security.cert.X509Certificate;
+import java.security.spec.PKCS8EncodedKeySpec;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.List;
+
+import javax.naming.ldap.LdapName;
+import javax.naming.ldap.Rdn;
+
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.interactive.digitalsignature.PDSignature;
+import org.apache.pdfbox.pdmodel.interactive.digitalsignature.SignatureInterface;
+import org.apache.pdfbox.pdmodel.interactive.digitalsignature.SignatureOptions;
+import org.apache.pdfbox.pdmodel.interactive.digitalsignature.visible.PDVisibleSigProperties;
+import org.apache.pdfbox.pdmodel.interactive.digitalsignature.visible.PDVisibleSignDesigner;
+import org.bouncycastle.jce.provider.BouncyCastleProvider;
+import org.bouncycastle.util.io.pem.PemReader;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import com.itextpdf.kernel.pdf.*;
+import com.itextpdf.signatures.*;
+import org.bouncycastle.jce.provider.BouncyCastleProvider;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.*;
+import java.security.*;
+import java.security.cert.Certificate;
+import java.security.cert.CertificateFactory;
+import java.security.cert.X509Certificate;
+
+
+@RestController
+public class CertSignController {
+
+    private static final Logger logger = LoggerFactory.getLogger(CertSignController.class);
+
+    static {
+        Security.addProvider(new BouncyCastleProvider());
+    }
+
+    @PostMapping(consumes = "multipart/form-data", value = "/cert-sign")
+    public ResponseEntity<String> signPDF(
+            @RequestParam("pdf") MultipartFile pdf,
+            @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 {
+        BouncyCastleProvider provider = new BouncyCastleProvider();
+        Security.addProvider(provider);
+
+        PrivateKey privateKey = null;
+        X509Certificate cert = null;
+
+        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 {
+            // Load private key
+            KeyFactory keyFactory = KeyFactory.getInstance("RSA", provider);
+            if (isPEM(privateKeyFile.getBytes())) {
+                privateKey = keyFactory.generatePrivate(new PKCS8EncodedKeySpec(parsePEM(privateKeyFile.getBytes())));
+            } else {
+                privateKey = keyFactory.generatePrivate(new PKCS8EncodedKeySpec(privateKeyFile.getBytes()));
+            }
+
+            // Load certificate
+            CertificateFactory certFactory = CertificateFactory.getInstance("X.509", provider);
+            if (isPEM(certFile.getBytes())) {
+                cert = (X509Certificate) certFactory.generateCertificate(new ByteArrayInputStream(parsePEM(certFile.getBytes())));
+            } else {
+                cert = (X509Certificate) certFactory.generateCertificate(new ByteArrayInputStream(certFile.getBytes()));
+            }
+        }
+
+        // Set up the PDF reader and stamper
+        PdfReader reader = new PdfReader(new ByteArrayInputStream(pdf.getBytes()));
+        ByteArrayOutputStream signedPdf = new ByteArrayOutputStream();
+        PdfSigner signer = new PdfSigner(reader, signedPdf, new StampingProperties());
+
+        // Set up the signing appearance
+        PdfSignatureAppearance appearance = signer.getSignatureAppearance()
+                .setReason("Test")
+                .setLocation("TestLocation");
+
+        // Set up the signer
+        PrivateKeySignature pks = new PrivateKeySignature(privateKey, DigestAlgorithms.SHA256, provider.getName());
+        IExternalSignature pss = new PrivateKeySignature(privateKey, DigestAlgorithms.SHA256, provider.getName());
+        IExternalDigest digest = new BouncyCastleDigest();
+
+        // 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");
+    }
+
+    private byte[] parsePEM(byte[] content) throws IOException {
+        PemReader pemReader = new PemReader(new InputStreamReader(new ByteArrayInputStream(content)));
+        return pemReader.readPemObject().getContent();
+    }
+
+    private boolean isPEM(byte[] content) {
+        String contentStr = new String(content);
+        return contentStr.contains("-----BEGIN") && contentStr.contains("-----END");
+    }
+   
+
+    
+
+
+}

src/main/java/stirling/software/SPDF/utils/PdfUtils.java

@@ -297,11 +297,11 @@ public class PdfUtils {
         sizeStr = sizeStr.trim().toUpperCase();
         try {
             if (sizeStr.endsWith("KB")) {
-                return Long.parseLong(sizeStr.substring(0, sizeStr.length() - 2)) * 1024;
+                return (long) (Double.parseDouble(sizeStr.substring(0, sizeStr.length() - 2)) * 1024);
             } else if (sizeStr.endsWith("MB")) {
-                return Long.parseLong(sizeStr.substring(0, sizeStr.length() - 2)) * 1024 * 1024;
+                return (long) (Double.parseDouble(sizeStr.substring(0, sizeStr.length() - 2)) * 1024 * 1024);
             } else if (sizeStr.endsWith("GB")) {
-                return Long.parseLong(sizeStr.substring(0, sizeStr.length() - 2)) * 1024 * 1024 * 1024;
+                return (long) (Double.parseDouble(sizeStr.substring(0, sizeStr.length() - 2)) * 1024 * 1024 * 1024);
             } else if (sizeStr.endsWith("B")) {
                 return Long.parseLong(sizeStr.substring(0, sizeStr.length() - 1));
             } else {
@@ -313,5 +313,6 @@ public class PdfUtils {
         
         return null;
     }
+
     
 }

src/main/resources/messages_en_GB.properties

@@ -223,8 +223,11 @@ fileToPDF.submit=Convert to PDF
 compress.title=Compress
 compress.header=Compress PDF
 compress.credit=This service uses OCRmyPDF for PDF Compress/Optimisation.
-compress.selectText.1=Optimization level:
+compress.selectText.1=Manual Mode - From 1 to 4
-compress.selectText.2=Expected PDF Size (e.g. 100MB, 25KB, 500B) 
+compress.selectText.2=Optimization level:
+compress.selectText.3=4 (Terrible for text images)
+compress.selectText.4=Auto mode - Auto adjusts quality to get PDF to exact size
+compress.selectText.5=Expected PDF Size (e.g. 25MB, 10.8MB, 25KB) 
 compress.submit=Compress
 
 

src/main/resources/templates/other/compress-pdf.html

@@ -11,7 +11,7 @@
         <div id="content-wrap">
             <div th:insert="~{fragments/navbar.html :: navbar}"></div>
             <br> <br>
-            <div class="container">R
+            <div class="container">
                 <div class="row justify-content-center">
                     <div class="col-md-6">
                         <h2 th:text="#{compress.header}"></h2>
@@ -19,22 +19,21 @@
                             <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false, accept='application/pdf')}"></div>
                             <div class="card mb-3">
                                 <div class="card-body">
-                                    <h4>Manual Mode - From 1 to 5</h4>
+                                    <h4 th:text="#{compress.selectText.1}"></h4>
-                                    <label for="optimizeLevel" th:text="#{compress.selectText.1}"></label>
+                                    <label for="optimizeLevel" th:text="#{compress.selectText.2}"></label>
                                     <select name="optimizeLevel" id="optimizeLevel" class="form-control">
                                         <option value="1">1</option>
                                         <option value="2" selected>2</option>
                                         <option value="3">3</option>
-                                        <option value="4">4</option>
+                                        <option value="4" th:text="#{compress.selectText.3}"></option>
-                                        <option value="5">5</option>
                                     </select>
                                 </div>
                             </div>
                             
                             <div class="card mb-3">
                                 <div class="card-body">
-                                    <h4>Auto mode - Auto adjusts quality to get PDF to exact size</h4>
+                                    <h4 th:text="#{compress.selectText.4}"></h4>
-                                    <label for="expectedOutputSize" th:text="#{compress.selectText.2}"></label>
+                                    <label for="expectedOutputSize" th:text="#{compress.selectText.5}"></label>
                                     <input type="text" name="expectedOutputSize" id="expectedOutputSize" min="1" class="form-control">
                                 </div>
                             </div>