I'm using PDFBox for PDF encryption. There is a requirement to set all the Document Restriction Summary fields to "Not Allowed". I'm using the below code to set the permissions. But these are not reflecting on PDF Document Restriction Summary.
AccessPermission ap = new AccessPermission();
ap.setCanAssembleDocument(false);
ap.setCanExtractContent(false);
ap.setCanExtractForAccessibility(false);
ap.setCanFillInForm(false);
ap.setCanModify(false);
ap.setCanModifyAnnotations(false);
ap.setCanPrint(false);
ap.setCanPrintDegraded(false);
ap.setReadOnly();
StandardProtectionPolicy spp = new StandardProtectionPolicy(userPassword, globalPassword, ap);
spp.setPermissions(ap);
spp.setEncryptionKeyLength(128);
pddocument.protect(spp);
pddocument.save(outputpdf);
pddocument.close();
PDF Document Restriction Summary
Related
Looking for a way to add a user-uploaded PDF file to a Word document generated in the browser.
The user fills out a questionnaire and has the option to upload a document. At the end, the user clicks on a button and a Word document is generated with the gathered data (using docxtemplater).
The JSON data used for the doc generation is not stored anywhere after these steps.
Is there
a) a library that allows the uploaded file (which will be a PDF) to be added to/embedded in the generated Word document in the front end or
b) a way to display the file in the Word document by referencing the data URL in the template?
Example JSON (after generating the document):
"attachmentUpload": [
{
"name": "Example.pdf",
"type: "application/pdf",
"content": "data:application/pdf;base64,[.......]"
}
]
All I have found so far are libraries to merge two or more PDF files.
Any pointers would be highly appreciated!
Thanks!
Given a PDF (with multiple pages), a page (stream) and a index , how can i replace the page at target index with my stream and save the pdf ?
public Stream ReplacePDFPageAtIndex(Stream pdfStream,int index,Stream replacePageStream)
{
List<Stream> pdfPages= //fetch pdf pages
pdfPages.RemoveAt(index);
pdfPages.Insert(index,replacePageStream);
Stream newPdf=//create new pdf using the edited list
return newPdf;
}
I was wondering if there is any open source solution or i can roll my own with ease , given the fact that i just need to split the pdf in pages , and replace one of them.
I have also checked ITextSharp but i do not see the functionality that i require.
In the Adobe's ISO 32000 spec for PDF/A it states that XFA data can be stored in a special place in the PDF/A-2 confirming PDF. Here is the text of that section.
Incorporation of XFA Datasets into a PDF/A-2 Conforming File
To support PDF/A-2 conforming files, ExtensionLevel 3 adds support for XML form data (XFA datasets)
through the XFAResources name tree, which is part of the name dictionary of the document catalog.
(See “TABLE 3.28 Entries in the name dictionary” on page 23.) While Acrobat forms (and form data) are
permitted in a PDF/A-2 conforming file, XML forms are not. Such XML forms are specified as XDP streams
referenced from interactive form dictionaries. XDP streams can contain XFA datasets.
For applications that convert PDF documents to PDF/A-2, the XFAResources name tree supports
relocation of XML form data from XDP streams in a PDF document into the XFAResources name tree.
The XFAResources name tree consists of a string name and an indirect reference to a stream. The string
name is created at the time the document is converted to a PDF/A-2 conforming file. The stream contains
the element of the XFA, comprised of elements.
In addition to data values for XML form fields, the elements enable the storage and retrieval
of other types of information that may be useful for other workflows, including data that is not bound to
form fields, and one or more XML signature(s).
See the XML Architecture, XML Forms Architecture (XFA) Specification, version 2.6 in the Bibliography
We have an XFA Form that we pass xml to and now need to convert that document to PDF/A-2.
We are currently testing out XFA Worker to see if that will allow us to do this, I have been unable to find a sample of XFA Worker that will do this for us.
I first tried to flatten with XFA Worker but that removes the data completely and is no longer able to be extracted.
How do you get the XFA xml data into the place that Adobe says to put it in with XFA Worker?
UPDATE: Thanks Bruno, my code isn't allowing me to convert the XFA Form to PDF/A-2. Here is the code I used.
xfa.fillXfaForm(new ByteArrayInputStream(xmlSchemaStream.toByteArray()));
stamper.close();
reader.close();
try (ByteArrayOutputStream outputStreamDest = new ByteArrayOutputStream()) {
PdfReader pdfAReader = new PdfReader(output.toByteArray());
PdfAStamper pdfAStamper = new PdfAStamper(pdfAReader, outputStreamDest, PdfAConformanceLevel.PDF_A_2A);
....
and I get an error com.itextpdf.text.pdf.PdfAConformanceException: Only PDF/A documents can be opened in PdfAStamper.
So I am now assuming the new PdfAStamper isn't a converter but just reading in the byte array of the XFA PDF.
Allow me to start with some fatherly advice. XFA will be deprecated in ISO-32000-2 (PDF 2.0) and it is great that you are turning your XFA documents into PDF/A documents. However, why would you choose for PDF/A-2? PDF/A-3 is identical to PDF/A-2 with one exception: in PDF/A-3, you are allowed to embed XML files. You can even indicate the relationship between the attached XML and the PDF. Wouldn't it be smarter to create a PDF/A-3 file and to attach the original data (not the XFA file) as an attachment?
Suppose that you'd ignore this fatherly advice, what could you do?
Annex D of ISO-19005-2 (and -3) tells you that you have to add an entry to the Names dictionary of the document catalog. Unfortunately, iText 5 doesn't allow you to add your own entries to this names dictionary while creating a file, so you will have to post-process the document.
Suppose that you have a file located in filePath, then you can get the Catalog entry and the Names entry of the Catalog entry like this:
PdfReader reader = new PdfReader(filePath);
PdfDictionary catalog = reader.getCatalog();
PdfDictionary names = catalog.getAsDict(PdfName.NAMES);
You can add entries to this names dictionary. For instance: suppose that I want to add a stream with content some bytes as a custom entry, I would use this code:
public void manipulatePdf(String src, String dest) throws IOException, DocumentException {
PdfReader reader = new PdfReader(src);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
PdfDictionary catalog = reader.getCatalog();
PdfDictionary names = catalog.getAsDict(PdfName.NAMES);
if (names == null) {
names = new PdfDictionary();
}
PdfStream stream = new PdfStream("Some bytes".getBytes());
PdfIndirectObject objref = stamper.getWriter().addToBody(stream);
names.put(new PdfName("ITXT_Custom"), objref.getIndirectReference());
catalog.put(PdfName.NAMES, names);
stamper.close();
reader.close();
}
The result would look like this:
In your case, you don't want to entry named ITXT_Custom. You want to add an entry called XFAResources and the value of that entry should be a name tree consisting of a string name and an indirect reference to a stream. It should be fairly easy to adapt my example to achieve this.
Note: All code provided by me on Stack Overflow can be used under the CC-BY-SA as defined in the Stack Exchange Network Terms of Service. If you do not like the CC-BY-SA, I also provide this code under the same license as used for iText, more specifically the AGPL.
I create a PDF document with EVO PDF library from a HTML page using the code below:
HtmlToPdfConverter htmlToPdfConverter = new HtmlToPdfConverter();
byte[] outPdfBuffer = htmlToPdfConverter.ConvertUrl(url);
Response.AddHeader("Content-Type", "application/pdf");
Response.AddHeader("Content-Disposition", String.Format("attachment; filename=Merge_HTML_with_Existing_PDF.pdf; size={0}", outPdfBuffer.Length.ToString()));
Response.BinaryWrite(outPdfBuffer);
Response.End();
This produces a PDF document but I have another PDF document that I would like to use as cover page in the final PDF document.
One possiblity I was thinking about was to create the PDF document and then to merge my cover page PDF with the PDF produced by converter but this looks like an inefficient solution. Saving the PDF and loading back for merge seems to introduce a unnecessary overhead. I would like to merge the cover page while the PDF document produced by converter is still in memory.
The following line added in your code right after you create the HTML to PDF converter object should do the trick:
// Set the PDF file to be inserted before conversion result
htmlToPdfConverter.PdfDocumentOptions.AddStartDocument("CoverPage.pdf");
I am reading a PDF which has editable fields and the fields can be edited by opening it through Adobe Reader. I am using PDFBox APIs to generate an output PDF with data filled for the editable fields in input PDF. The output PDF can be opened using Adobe Reader and I am able to see the field values but I am unable to edit those fields directly from Adobe reader.
There is also a JIRA ticket for this issue and it is unresolved according to this link :
https://issues.apache.org/jira/browse/PDFBOX-1121
Can anybody please tell me if this got resolved? Also, if possible please answer the following questions related to my question:
Is there any protection policy or access permission that I need to explicitly set in order to edit the output PDF from Adobe reader?
Every time I open the PDF that was written to using pdfbox APIs, I get this message prompt:
" The document has been changed since it was created and use of extended features is no longer available...."
I am using PdfBox 1.8.6 jar and Adobe reader 11.0.8. I would really appreciate if anybody could help me with this issue.
Code snippet added to aid responders in debugging :
String outputFileNameWithPath = "C:\myfolder\testop.pdf";
PDDocument pdf = null;
pdf = PDDocument.load( outputFileNameWithPath );
PDDocumentCatal og docCatalog = pdf.getDocumentCatalog();
PDAcroForm acroForm = docCatalog.getAcroForm();
//The map pdfValues is a collection of the data that I need to set in the PDF
//I am unable to go into the details of my data soutce
// The key in the data map corresponds to the PDField's expanded name and data
// corresponds to the data that I am trying to set.
Iterator<Entry<String, String>> iter=pdfValues.entrySet().iterator();
String name=null;
String value=null;
PDField field=null;
//Iterate over all data and see if the PDF has a matching field.
while(iter.hasNext()) {
Map.Entry<String, String> currentEntry=iter.next();
name=currentEntry.getKey();
value=currentEntry.getValue();
if(name!=null) {
name=CommonUtils.fromSchemaNameToPdfName(name);
field=acroForm.getField(name);
}
if( field != null && value!=null )
{
field.setValue( value ); //setting the values once field is found.
}
}
// Set access permissions / encryption here before saving
pdf.save(outputFileNameWithPath);
Thanks.
The document has been changed since it was created and use of extended features is no longer available....
This indicates that the original form has been Reader-enabled, i.e. an integrated Usage-Rights digital signature has been applied to the document using a private key held by Adobe which tells the Adobe Reader that it shall make some extra functionality available to the user viewing that form.
If you don't want to break that signature during form fill-ins with PDFBox, you need to make sure that you
don't do any changes but form fill-ins and
save the changes as incremental update.
If you provided your form fill-in code and your source PDF, this could be analyzed in more detail.