fenix/PDF4QT
1
0
Fork 0
mirror of https://github.com/JakubMelka/PDF4QT.git synced 2025-06-05 21:59:17 +02:00
Code Issues Packages Projects Releases Wiki Activity

Handling CAdES signatures

Browse Source
This commit is contained in:
Jakub Melka
2020-07-04 15:10:28 +02:00
parent 73cebb184e
commit 03dac20314
6 changed files with 318 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

78
PdfForQtLib/sources/pdfcatalog.cpp
View File

@ -20,6 +20,7 @@
#include "pdfexception.h"
#include "pdfnumbertreeloader.h"
#include "pdfnametreeloader.h"
#include "pdfencoding.h"
namespace pdf
{
@ -169,6 +170,7 @@ PDFCatalog PDFCatalog::parse(const PDFObject& catalog, const PDFDocument* docume
}
catalogObject.m_formObject = catalogDictionary->get("AcroForm");
catalogObject.m_documentSecurityStore = PDFDocumentSecurityStore::parse(catalogDictionary->get("DSS"), document);
return catalogObject;
}
@ -461,4 +463,80 @@ PDFPageLabel PDFPageLabel::parse(PDFInteger pageIndex, const PDFDocument* docume
return PDFPageLabel();
}
const PDFDocumentSecurityStore::SecurityStoreItem* PDFDocumentSecurityStore::getItem(const QByteArray& hash) const
{
auto it = m_VRI.find(hash);
if (it != m_VRI.cend())
{
return &it->second;
}
return getMasterItem();
}
PDFDocumentSecurityStore PDFDocumentSecurityStore::parse(const PDFObject& object, const PDFDocument* document)
{
PDFDocumentSecurityStore store;
try
{
if (const PDFDictionary* dssDictionary = document->getDictionaryFromObject(object))
{
PDFDocumentDataLoaderDecorator loader(document);
auto getDecodedStreams = [document, &loader](const PDFObject& object) -> std::vector<QByteArray>
{
std::vector<QByteArray> result;
std::vector<PDFObjectReference> references = loader.readReferenceArray(object);
result.reserve(references.size());
for (const PDFObjectReference& reference : references)
{
PDFObject object = document->getObjectByReference(reference);
if (object.isStream())
{
result.emplace_back(document->getDecodedStream(object.getStream()));
}
}
return result;
};
store.m_master.Cert = getDecodedStreams(dssDictionary->get("Certs"));
store.m_master.OCSP = getDecodedStreams(dssDictionary->get("OCSPs"));
store.m_master.CRL = getDecodedStreams(dssDictionary->get("CRLs"));
if (const PDFDictionary* vriDictionary = document->getDictionaryFromObject(dssDictionary->get("VRI")))
{
for (size_t i = 0, count = vriDictionary->getCount(); i < count; ++i)
{
const PDFObject& vriItemObject = vriDictionary->getValue(i);
if (const PDFDictionary* vriItemDictionary = document->getDictionaryFromObject(vriItemObject))
{
QByteArray key = vriDictionary->getKey(i).getString();
SecurityStoreItem& item = store.m_VRI[key];
item.Cert = getDecodedStreams(vriItemDictionary->get("Cert"));
item.CRL = getDecodedStreams(vriItemDictionary->get("CRL"));
item.OCSP = getDecodedStreams(vriItemDictionary->get("OCSP"));
item.created = PDFEncoding::convertToDateTime(loader.readStringFromDictionary(vriDictionary, "TU"));
PDFObject timestampObject = document->getObject(vriItemDictionary->get("TS"));
if (timestampObject.isStream())
{
item.timestamp = document->getDecodedStream(timestampObject.getStream());
}
}
}
}
}
}
catch (PDFException)
{
return PDFDocumentSecurityStore();
}
return store;
}
} // namespace pdf