DGNum/Stirling-PDF
15
0
Fork 0
Code Issues 4 Pull requests 1 Projects Releases Packages Wiki Activity

Merge pull request #1360 from Ludy87/remove_digi_sign

Browse source 
new workaround for remove digital signature
This commit is contained in:
Anthony Stirling 2024-06-01 22:31:05 +01:00 committed by GitHub
commit c5f7000e72
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
34 changed files with 137 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

52
src/main/java/stirling/software/SPDF/controller/api/converters/ConvertPDFToPDFA.java
View file

@ -1,10 +1,22 @@
package stirling.software.SPDF.controller.api.converters;
import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
import org.apache.pdfbox.Loader;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
import org.apache.pdfbox.pdmodel.interactive.form.PDField;
import org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PostMapping;
@ -26,6 +38,8 @@ import stirling.software.SPDF.utils.WebResponseUtils;
@Tag(name = "Convert", description = "Convert APIs")
public class ConvertPDFToPDFA {
private static final Logger logger = LoggerFactory.getLogger(ConvertPDFToPDFA.class);
@PostMapping(consumes = "multipart/form-data", value = "/pdf/pdfa")
@Operation(
summary = "Convert a PDF to a PDF/A",
@ -36,9 +50,39 @@ public class ConvertPDFToPDFA {
MultipartFile inputFile = request.getFileInput();
String outputFormat = request.getOutputFormat();
// Save the uploaded file to a temporary location
// Convert MultipartFile to byte[]
byte[] pdfBytes = inputFile.getBytes();
// Load the PDF document
PDDocument document = Loader.loadPDF(pdfBytes);
// Get the document catalog
PDDocumentCatalog catalog = document.getDocumentCatalog();
// Get the AcroForm
PDAcroForm acroForm = catalog.getAcroForm();
if (acroForm != null) {
// Remove signature fields safely
List<PDField> fieldsToRemove =
acroForm.getFields().stream()
.filter(field -> field instanceof PDSignatureField)
.collect(Collectors.toList());
if (!fieldsToRemove.isEmpty()) {
acroForm.flatten(fieldsToRemove, false);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
document.save(baos);
pdfBytes = baos.toByteArray();
}
}
document.close();
// Save the uploaded (and possibly modified) file to a temporary location
Path tempInputFile = Files.createTempFile("input_", ".pdf");
inputFile.transferTo(tempInputFile.toFile());
try (OutputStream outputStream = new FileOutputStream(tempInputFile.toFile())) {
outputStream.write(pdfBytes);
}
// Prepare the output file path
Path tempOutputFile = Files.createTempFile("output_", ".pdf");
@ -58,7 +102,7 @@ public class ConvertPDFToPDFA {
.runCommandWithOutputHandling(command);
// Read the optimized PDF file
byte[] pdfBytes = Files.readAllBytes(tempOutputFile);
byte[] optimizedPdfBytes = Files.readAllBytes(tempOutputFile);
// Clean up the temporary files
Files.deleteIfExists(tempInputFile);
@ -69,6 +113,6 @@ public class ConvertPDFToPDFA {
Filenames.toSimpleFileName(inputFile.getOriginalFilename())
.replaceFirst("[.][^.]+$", "")
+ "_PDFA.pdf";
return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
return WebResponseUtils.bytesToWebResponse(optimizedPdfBytes, outputFilename);
}
}

14
src/main/java/stirling/software/SPDF/controller/api/security/RemoveCertSignController.java
View file

@ -1,11 +1,14 @@
package stirling.software.SPDF.controller.api.security;
import java.io.ByteArrayOutputStream;
import java.util.List;
import java.util.stream.Collectors;
import org.apache.pdfbox.Loader;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
import org.apache.pdfbox.pdmodel.interactive.form.PDField;
import org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -54,8 +57,15 @@ public class RemoveCertSignController {
// Get the AcroForm
PDAcroForm acroForm = catalog.getAcroForm();
if (acroForm != null) {
// Remove signature fields
acroForm.getFields().removeIf(field -> field instanceof PDSignatureField);
// Remove signature fields safely
List<PDField> fieldsToRemove =
acroForm.getFields().stream()
.filter(field -> field instanceof PDSignatureField)
.collect(Collectors.toList());
if (!fieldsToRemove.isEmpty()) {
acroForm.flatten(fieldsToRemove, false);
}
}
// Save the modified document to the ByteArrayOutputStream

1
src/main/resources/messages_ar_AR.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=تستخدم هذه الخدمة OCRmyPDF لتحويل PDF / A.
pdfToPDFA.submit=تحويل
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_bg_BG.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Тази услуга използва OCRmyPDF за PDF/A пр
pdfToPDFA.submit=Преобразуване
pdfToPDFA.tip=В момента не работи за няколко входа наведнъж
pdfToPDFA.outputFormat=Изходен формат
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_ca_CA.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Utilitza OCRmyPDF per la conversió a PDF/A
pdfToPDFA.submit=Converteix
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_cs_CZ.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Tato služba používá OCRmyPDF pro konverzi do formátu PDF/A
pdfToPDFA.submit=Převést
pdfToPDFA.tip=V současné době nepracuje pro více vstupů najednou
pdfToPDFA.outputFormat=Výstupní formát
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_de_DE.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Dieser Dienst verwendet OCRmyPDF für die PDF/A-Konvertierung
pdfToPDFA.submit=Konvertieren
pdfToPDFA.tip=Dieser Dienst kann nur einzelne Eingangsdateien verarbeiten.
pdfToPDFA.outputFormat=Ausgabeformat
pdfToPDFA.pdfWithDigitalSignature=Das PDF enthält eine digitale Signatur. Sie wird im nächsten Schritt entfernt.
#PDFToWord

1
src/main/resources/messages_el_GR.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Αυτή η υπηρεσία χρησιμοποιεί OCRmyPDF
pdfToPDFA.submit=Μετατροπή
pdfToPDFA.tip=Προς το παρόν δεν λειτουργεί για πολλαπλές εισόδους ταυτόχρονα
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_en_GB.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=This service uses OCRmyPDF for PDF/A conversion
pdfToPDFA.submit=Convert
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_en_US.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=This service uses OCRmyPDF for PDF/A conversion
pdfToPDFA.submit=Convert
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_es_ES.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Este servicio usa OCRmyPDF para la conversión a PDF/A
pdfToPDFA.submit=Convertir
pdfToPDFA.tip=Actualmente no funciona para múltiples entrada a la vez
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_eu_ES.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Zerbitzu honek OCRmyPDF erabiltzen du PDFak PDF/A bihurtzeko
pdfToPDFA.submit=Bihurtu
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_fr_FR.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Ce service utilise OCRmyPDF pour la conversion en PDF/A.
pdfToPDFA.submit=Convertir
pdfToPDFA.tip=Ne fonctionne actuellement pas pour plusieurs entrées à la fois
pdfToPDFA.outputFormat=Format de sortie
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_hi_IN.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=इस सेवा में PDF/A परिवर्तन
pdfToPDFA.submit=परिवर्तित करें
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

8
src/main/resources/messages_hr_HR.properties
View file

@ -331,6 +331,9 @@ compare.tags=razlikovati,kontrast,izmjene,analiza
home.certSign.title=Potpišite s certifikatom
home.certSign.desc=Potpisuje PDF s certifikatom/ključem (PEM/P12)
certSign.tags=autentifikacija,PEM,P12,zvanično,šifriranje
# home.removeCertSign.title=Remove Certificate Sign
# home.removeCertSign.desc=Remove certificate signature from PDF
# removeCertSign.tags=authenticate,PEM,P12,official,decrypt
home.pageLayout.title=Izgled s više stranica
home.pageLayout.desc=Spojite više stranica PDF dokumenta u jednu stranicu
@ -653,6 +656,10 @@ certSign.reason=Razlog
certSign.location=Mjesto
certSign.name=Ime
certSign.submit=Potpiši PDF
# removeCertSign.title=Remove Certificate Signature
# removeCertSign.header=Remove the digital certificate from the PDF
# removeCertSign.selectPDF=Select a PDF file:
# removeCertSign.submit=Remove Signature
#removeBlanks
@ -965,6 +972,7 @@ pdfToPDFA.credit=Ova usluga koristi OCRmyPDF za PDF/A pretvorbu
pdfToPDFA.submit=Pretvoriti
pdfToPDFA.tip=Trenutno ne radi za više unosa odjednom
pdfToPDFA.outputFormat=Izlazni format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_hu_HU.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Ez a szolgáltatás az OCRmyPDF-t használja a PDF/A konverzió
pdfToPDFA.submit=Konvertálás
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_id_ID.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Layanan ini menggunakan OCRmyPDF untuk konversi PDF/A.
pdfToPDFA.submit=Konversi
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_it_IT.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Questo servizio utilizza OCRmyPDF per la conversione in PDF/A.
pdfToPDFA.submit=Converti
pdfToPDFA.tip=Attualmente non funziona per più input contemporaneamente
pdfToPDFA.outputFormat=Formato di output
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_ja_JP.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=本サービスはPDF/Aの変換にOCRmyPDFを使用してい
pdfToPDFA.submit=変換
pdfToPDFA.tip=現在、一度に複数の入力に対して機能しません
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_ko_KR.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=이 서비스는 PDF/A 변환을 위해 OCRmyPDF 문서를 사
pdfToPDFA.submit=변환
pdfToPDFA.tip=현재 한 번에 여러 입력에 대해 작동하지 않습니다.
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_nl_NL.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Deze service gebruikt OCRmyPDF voor PDF/A-conversie
pdfToPDFA.submit=Converteren
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_pl_PL.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Ta usługa używa OCRmyPDF do konwersji PDF/A
pdfToPDFA.submit=Konwertuj
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_pt_BR.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Este serviço usa OCRmyPDF para Conversão de PDF/A
pdfToPDFA.submit=Converter
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_pt_PT.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Este serviço usa OCRmyPDF para Conversão de PDF/A
pdfToPDFA.submit=Converter
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_ro_RO.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Acest serviciu utilizează OCRmyPDF pentru conversia în PDF/A
pdfToPDFA.submit=Convert
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_ru_RU.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Этот сервис использует OCRmyPDF для пр
pdfToPDFA.submit=Конвертировать
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_sk_SK.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Táto služba používa OCRmyPDF na konverziu PDF/A
pdfToPDFA.submit=Konvertovať
pdfToPDFA.tip=Momentálne nefunguje pre viacero vstupov naraz
pdfToPDFA.outputFormat=Výstupný formát
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_sr_LATN_RS.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Ova usluga koristi OCRmyPDF za konverziju u PDF/A format
pdfToPDFA.submit=Konvertuj
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_sv_SE.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Denna tjänst använder OCRmyPDF för PDF/A-konvertering
pdfToPDFA.submit=Konvertera
pdfToPDFA.tip=Currently does not work for multiple inputs at once
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_tr_TR.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Bu hizmet PDF/A dönüşümü için OCRmyPDF kullanır
pdfToPDFA.submit=Dönüştür
pdfToPDFA.tip=Şu anda aynı anda birden fazla giriş için çalışmıyor
pdfToPDFA.outputFormat=Çıkış formatı
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_uk_UA.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=Цей сервіс використовує OCRmyPDF для п
pdfToPDFA.submit=Конвертувати
pdfToPDFA.tip=Наразі не працює для кількох вхідних файлів одночасно
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_zh_CN.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=此服务使用OCRmyPDF进行PDF/A转换
pdfToPDFA.submit=转换
pdfToPDFA.tip=目前不支持上传多个
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

1
src/main/resources/messages_zh_TW.properties
View file

@ -976,6 +976,7 @@ pdfToPDFA.credit=此服務使用 OCRmyPDF 進行 PDF/A 轉換
pdfToPDFA.submit=轉換
pdfToPDFA.tip=目前不支援上傳多個
pdfToPDFA.outputFormat=Output format
pdfToPDFA.pdfWithDigitalSignature=The PDF contains a digital signature. This will be removed in the next step.
#PDFToWord

42
src/main/resources/templates/convert/pdf-to-pdfa.html
View file

@ -21,15 +21,51 @@
<form method="post" enctype="multipart/form-data" th:action="@{api/v1/convert/pdf/pdfa}">
<div th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false, accept='application/pdf')}"></div>
<div class="mb-3">
<label th:text="#{pdfToPDFA.outputFormat}"></label>
<select class="form-control" name="outputFormat">
<label for="outputFormat" th:text="#{pdfToPDFA.outputFormat}"></label>
<select class="form-control" name="outputFormat" id="outputFormat">
<option value="pdfa-1">PDF/A-1b</option>
<option value="pdfa">PDF/A-2b</option>
</select>
</div>
<br>
<div id="result" class="alert-warning"></div>
<button type="submit" id="submitBtn" class="btn btn-primary" th:text="#{pdfToPDFA.submit}"></button>
</form>
<script th:inline="javascript">
document.getElementById('fileInput-input').addEventListener('change', async () => {
pdfjsLib.GlobalWorkerOptions.workerSrc = './pdfjs/pdf.worker.mjs';
const fileInput = document.getElementById('fileInput-input');
const resultDiv = document.getElementById('result');
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
try {
const pdf = await pdfjsLib.getDocument({ data: arrayBuffer }).promise;
let hasSignature = false;
for (let i = 1; i <= pdf.numPages; i++) {
const page = await pdf.getPage(i);
const annotations = await page.getAnnotations({ intent: 'display' });
annotations.forEach(annotation => {
console.log(annotation)
if (annotation.subtype === 'Widget' && annotation.fieldType === 'Sig') {
hasSignature = true;
}
});
}
if (hasSignature) {
/*<![CDATA[*/
resultDiv.textContent = /*[[#{pdfToPDFA.pdfWithDigitalSignature}]]*/ "The PDF contains a digital signature. This will be removed in the next step.";
/*]]>*/
}
} catch (error) {
resultDiv.textContent = 'Error reading the PDF: ' + error.message;
}
});
</script>
<p class="mt-3" th:text="#{pdfToPDFA.credit}"></p>
</div>
</div>