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Adding some catalog entry - PDF 2.0 conformance

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This commit is contained in:
Jakub Melka 2020-07-11 18:02:30 +02:00
parent 1ef7d08d47
commit 6a7005675f
3 changed files with 67 additions and 1 deletions
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34
PdfForQtLib/sources/pdfcatalog.cpp
View File

@ -170,6 +170,7 @@ PDFCatalog PDFCatalog::parse(const PDFObject& catalog, const PDFDocument* docume
}
catalogObject.m_formObject = catalogDictionary->get("AcroForm");
catalogObject.m_extensions = PDFDeveloperExtensions::parse(catalogDictionary->get("Extensions"), document);
catalogObject.m_documentSecurityStore = PDFDocumentSecurityStore::parse(catalogDictionary->get("DSS"), document);
return catalogObject;
@ -539,4 +540,37 @@ PDFDocumentSecurityStore PDFDocumentSecurityStore::parse(const PDFObject& object
return store;
}
PDFDeveloperExtensions PDFDeveloperExtensions::parse(const PDFObject& object, const PDFDocument* document)
{
PDFDeveloperExtensions extensions;
if (const PDFDictionary* dictionary = document->getDictionaryFromObject(object))
{
const size_t extensionsCount = dictionary->getCount();
extensions.m_extensions.reserve(extensionsCount);
for (size_t i = 0; i < extensionsCount; ++i)
{
// Skip type entry
if (dictionary->getKey(i) == "Type")
{
continue;
}
if (const PDFDictionary* extensionsDictionary = document->getDictionaryFromObject(dictionary->getValue(i)))
{
PDFDocumentDataLoaderDecorator loader(document);
Extension extension;
extension.name = dictionary->getKey(i).getString();
extension.baseVersion = loader.readNameFromDictionary(extensionsDictionary, "BaseName");
extension.extensionLevel = loader.readIntegerFromDictionary(extensionsDictionary, "ExtensionLevel", 0);
extension.url = loader.readStringFromDictionary(extensionsDictionary, "URL");
extensions.m_extensions.emplace_back(qMove(extension));
}
}
}
return extensions;
}
} // namespace pdf

32
PdfForQtLib/sources/pdfcatalog.h
View File

@ -225,6 +225,36 @@ private:
std::map<QByteArray, SecurityStoreItem> m_VRI;
};
/// Document extensions. Contains information about developer's extensions
/// used in document.
class PDFFORQTLIBSHARED_EXPORT PDFDeveloperExtensions
{
public:
explicit PDFDeveloperExtensions() = default;
struct Extension
{
QByteArray name;
QByteArray baseVersion;
PDFInteger extensionLevel = 0;
QByteArray url;
};
using Extensions = std::vector<Extension>;
/// Returns list of extensions
const Extensions& getExtensions() const { return m_extensions; }
/// Parses extensions from catalog dictionary. If object cannot be parsed, or error occurs,
/// then empty object is returned, no exception is thrown.
/// \param object Extensions dictionary
/// \param document Document
static PDFDeveloperExtensions parse(const PDFObject& object, const PDFDocument* document);
private:
Extensions m_extensions;
};
class PDFFORQTLIBSHARED_EXPORT PDFCatalog
{
public:
@ -267,6 +297,7 @@ public:
const QByteArray& getBaseURI() const { return m_baseURI; }
const std::map<QByteArray, PDFFileSpecification>& getEmbeddedFiles() const { return m_embeddedFiles; }
const PDFObject& getFormObject() const { return m_formObject; }
const PDFDeveloperExtensions& getExtensions() const { return m_extensions; }
const PDFDocumentSecurityStore& getDocumentSecurityStore() const { return m_documentSecurityStore; }
/// Returns destination using the key. If destination with the key is not found,
@ -291,6 +322,7 @@ private:
PageMode m_pageMode = PageMode::UseNone;
QByteArray m_baseURI;
PDFObject m_formObject;
PDFDeveloperExtensions m_extensions;
PDFDocumentSecurityStore m_documentSecurityStore;
// Maps from Names dictionary

2
PdfForQtLib/sources/pdfsecurityhandler.cpp
View File

@ -811,7 +811,7 @@ QByteArray PDFStandardSecurityHandler::createFileEncryptionKey(const QByteArray&
const int keyByteLength = m_keyLength / 8;
if (keyByteLength > MD5_DIGEST_LENGTH)
{
throw PDFException(PDFTranslationContext::tr("Encryption key length (%1) exceeded maximal value of.").arg(keyByteLength).arg(MD5_DIGEST_LENGTH));
throw PDFException(PDFTranslationContext::tr("Encryption key length (%1) exceeded maximal value of %2.").arg(keyByteLength).arg(MD5_DIGEST_LENGTH));
}
if (m_R >= 3)