vcl: add initial CppunitTest_vcl_pdfexport

Invoke the PDF export filter and then use the PDF tokenizer from
xmlsecurity to assert the contents of created PDF file. The testcase
fails with commit 6db0f1feb1d9931d2726dd11a889c58815710ce0 (tdf#106059
PDF export: create a reference XObject for PDF images, 2017-02-22)
reverted.

Reviewed-on: https://gerrit.libreoffice.org/34609
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>
(cherry picked from commit 58eac1105f8504bd5320911fc6fe967ccaa3d469)

 Conflicts:
	vcl/Module_vcl.mk

Change-Id: I90526fef41d9560ae447f586df766bc50a491c43

10 files changed, 24 insertions, 306 deletions

diff --git a/xmlsecurity/inc/documentsignaturehelper.hxx b/xmlsecurity/inc/documentsignaturehelper.hxx
index 10268e79c6af..c2b5b85e34a2 100644
--- a/xmlsecurity/inc/documentsignaturehelper.hxx
+++ b/xmlsecurity/inc/documentsignaturehelper.hxx
@@ -24,7 +24,7 @@
 #include <com/sun/star/xml/sax/XDocumentHandler.hpp>
 #include <rtl/ustring.hxx>
 #include "sigstruct.hxx"
-#include "xmlsecuritydllapi.h"
+#include "xmlsecurity/xmlsecuritydllapi.h"
 
 #include <vector>
 
diff --git a/xmlsecurity/inc/documentsignaturemanager.hxx b/xmlsecurity/inc/documentsignaturemanager.hxx
index fe9f9a405d38..af3465462a5a 100644
--- a/xmlsecurity/inc/documentsignaturemanager.hxx
+++ b/xmlsecurity/inc/documentsignaturemanager.hxx
@@ -20,7 +20,7 @@
 #ifndef INCLUDED_XMLSECURITY_INC_DOCUMENTSIGNATUREMANAGER_HXX
 #define INCLUDED_XMLSECURITY_INC_DOCUMENTSIGNATUREMANAGER_HXX
 
-#include "xmlsecuritydllapi.h"
+#include "xmlsecurity/xmlsecuritydllapi.h"
 
 #include <memory>
 
diff --git a/xmlsecurity/inc/pdfio/pdfdocument.hxx b/xmlsecurity/inc/pdfio/pdfdocument.hxx
deleted file mode 100644
index e2f2913e863c..000000000000
--- a/xmlsecurity/inc/pdfio/pdfdocument.hxx
+++ /dev/null
@@ -1,250 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*
- * This file is part of the LibreOffice project.
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- */
-
-#ifndef INCLUDED_XMLSECURITY_INC_PDFIO_PDFDOCUMENT_HXX
-#define INCLUDED_XMLSECURITY_INC_PDFIO_PDFDOCUMENT_HXX
-
-#include <map>
-#include <vector>
-
-#include <com/sun/star/security/XCertificate.hpp>
-
-#include <tools/stream.hxx>
-
-#include <xmlsecuritydllapi.h>
-#include <sigstruct.hxx>
-
-namespace xmlsecurity
-{
-namespace pdfio
-{
-
-class PDFTrailerElement;
-class PDFHexStringElement;
-class PDFReferenceElement;
-class PDFDocument;
-class PDFDictionaryElement;
-class PDFArrayElement;
-class PDFStreamElement;
-
-/// A byte range in a PDF file.
-class PDFElement
-{
-public:
-    virtual bool Read(SvStream& rStream) = 0;
-    virtual ~PDFElement() { }
-};
-
-/// Indirect object: something with a unique ID.
-class XMLSECURITY_DLLPUBLIC PDFObjectElement : public PDFElement
-{
-    PDFDocument& m_rDoc;
-    double m_fObjectValue;
-    double m_fGenerationValue;
-    std::map<OString, PDFElement*> m_aDictionary;
-    /// Position after the '<<' token.
-    sal_uInt64 m_nDictionaryOffset;
-    /// Length of the dictionary buffer till (before) the '<<' token.
-    sal_uInt64 m_nDictionaryLength;
-    PDFDictionaryElement* m_pDictionaryElement;
-    /// The contained direct array, if any.
-    PDFArrayElement* m_pArrayElement;
-    /// The stream of this object, used when this is an object stream.
-    PDFStreamElement* m_pStreamElement;
-    /// Objects of an object stream.
-    std::vector< std::unique_ptr<PDFObjectElement> > m_aStoredElements;
-    /// Elements of an object in an object stream.
-    std::vector< std::unique_ptr<PDFElement> > m_aElements;
-    /// Uncompressed buffer of an object in an object stream.
-    std::unique_ptr<SvMemoryStream> m_pStreamBuffer;
-
-public:
-    PDFObjectElement(PDFDocument& rDoc, double fObjectValue, double fGenerationValue);
-    bool Read(SvStream& rStream) override;
-    PDFElement* Lookup(const OString& rDictionaryKey);
-    PDFObjectElement* LookupObject(const OString& rDictionaryKey);
-    double GetObjectValue() const;
-    void SetDictionaryOffset(sal_uInt64 nDictionaryOffset);
-    sal_uInt64 GetDictionaryOffset();
-    void SetDictionaryLength(sal_uInt64 nDictionaryLength);
-    sal_uInt64 GetDictionaryLength();
-    PDFDictionaryElement* GetDictionary() const;
-    void SetDictionary(PDFDictionaryElement* pDictionaryElement);
-    void SetArray(PDFArrayElement* pArrayElement);
-    void SetStream(PDFStreamElement* pStreamElement);
-    PDFArrayElement* GetArray() const;
-    /// Parse objects stored in this object stream.
-    void ParseStoredObjects();
-    std::vector< std::unique_ptr<PDFElement> >& GetStoredElements();
-    SvMemoryStream* GetStreamBuffer() const;
-    void SetStreamBuffer(std::unique_ptr<SvMemoryStream>& pStreamBuffer);
-};
-
-/// Name object: a key string.
-class XMLSECURITY_DLLPUBLIC PDFNameElement : public PDFElement
-{
-    OString m_aValue;
-    /// Offset after the '/' token.
-    sal_uInt64 m_nLocation;
-    /// Length till the next token start.
-    sal_uInt64 m_nLength;
-public:
-    PDFNameElement();
-    bool Read(SvStream& rStream) override;
-    const OString& GetValue() const;
-    sal_uInt64 GetLocation() const;
-    sal_uInt64 GetLength() const;
-};
-
-enum class TokenizeMode
-{
-    /// Full file.
-    END_OF_STREAM,
-    /// Till the first %%EOF token.
-    EOF_TOKEN,
-    /// Till the end of the current object.
-    END_OF_OBJECT,
-    /// Same as END_OF_OBJECT, but for object streams (no endobj keyword).
-    STORED_OBJECT
-};
-
-/// The type column of an entry in a cross-reference stream.
-enum class XRefEntryType
-{
-    /// xref "f" or xref stream "0".
-    FREE,
-    /// xref "n" or xref stream "1".
-    NOT_COMPRESSED,
-    /// xref stream "2.
-    COMPRESSED
-};
-
-/// An entry in a cross-reference stream.
-struct XRefEntry
-{
-    XRefEntryType m_eType;
-    /**
-     * Non-compressed: The byte offset of the object, starting from the
-     * beginning of the file.
-     * Compressed: The object number of the object stream in which this object is
-     * stored.
-     */
-    sal_uInt64 m_nOffset;
-    /**
-     * Non-compressed: The generation number of the object.
-     * Compressed: The index of this object within the object stream.
-     */
-    sal_uInt64 m_nGenerationNumber;
-    /// Are changed as part of an incremental update?.
-    bool m_bDirty;
-
-    XRefEntry();
-};
-
-/**
- * In-memory representation of an on-disk PDF document.
- *
- * The PDF element list is not meant to be saved back to disk, but some
- * elements remember their source offset / length, and based on that it's
- * possible to modify the input file.
- */
-class XMLSECURITY_DLLPUBLIC PDFDocument
-{
-    /// This vector owns all elements.
-    std::vector< std::unique_ptr<PDFElement> > m_aElements;
-    /// Object ID <-> object offset map.
-    std::map<size_t, XRefEntry> m_aXRef;
-    /// Object offset <-> Object pointer map.
-    std::map<size_t, PDFObjectElement*> m_aOffsetObjects;
-    /// Object ID <-> Object pointer map.
-    std::map<size_t, PDFObjectElement*> m_aIDObjects;
-    /// List of xref offsets we know.
-    std::vector<size_t> m_aStartXRefs;
-    /// List of EOF offsets we know.
-    std::vector<size_t> m_aEOFs;
-    PDFTrailerElement* m_pTrailer;
-    /// When m_pTrailer is nullptr, this can still have a dictionary.
-    PDFObjectElement* m_pXRefStream;
-    /// All editing takes place in this buffer, if it happens.
-    SvMemoryStream m_aEditBuffer;
-
-    static int AsHex(char ch);
-    /// Decode a hex dump.
-    static std::vector<unsigned char> DecodeHexString(PDFHexStringElement* pElement);
-    /// Suggest a minimal, yet free signature ID to use for the next signature.
-    sal_uInt32 GetNextSignature();
-    /// Write the signature object as part of signing.
-    sal_Int32 WriteSignatureObject(const OUString& rDescription, bool bAdES, sal_uInt64& rLastByteRangeOffset, sal_Int64& rSignatureContentOffset);
-    /// Write the appearance object as part of signing.
-    sal_Int32 WriteAppearanceObject();
-    /// Write the annot object as part of signing.
-    sal_Int32 WriteAnnotObject(PDFObjectElement& rFirstPage, sal_Int32 nSignatureId, sal_Int32 nAppearanceId);
-    /// Write the updated Page object as part of signing.
-    bool WritePageObject(PDFObjectElement& rFirstPage, sal_Int32 nAnnotId);
-    /// Write the updated Catalog object as part of signing.
-    bool WriteCatalogObject(sal_Int32 nAnnotId, PDFReferenceElement*& pRoot);
-    /// Write the updated cross-references as part of signing.
-    void WriteXRef(sal_uInt64 nXRefOffset, PDFReferenceElement* pRoot);
-
-public:
-    PDFDocument();
-    PDFDocument& operator=(const PDFDocument&) = delete;
-    PDFDocument(const PDFDocument&) = delete;
-    /// @name Low-level functions, to be used by PDFElement subclasses.
-    //@{
-    static OString ReadKeyword(SvStream& rStream);
-    static size_t FindStartXRef(SvStream& rStream);
-    void ReadXRef(SvStream& rStream);
-    void ReadXRefStream(SvStream& rStream);
-    static void SkipWhitespace(SvStream& rStream);
-    /// Instead of all whitespace, just skip CR and NL characters.
-    static void SkipLineBreaks(SvStream& rStream);
-    size_t GetObjectOffset(size_t nIndex) const;
-    const std::vector< std::unique_ptr<PDFElement> >& GetElements();
-    std::vector<PDFObjectElement*> GetPages();
-    /// Remember the end location of an EOF token.
-    void PushBackEOF(size_t nOffset);
-    /// Look up object based on object number, possibly by parsing object streams.
-    PDFObjectElement* LookupObject(size_t nObjectNumber);
-    /// Access to the input document, even after the input stream is gone.
-    SvMemoryStream& GetEditBuffer();
-    /// Tokenize elements from current offset.
-    bool Tokenize(SvStream& rStream, TokenizeMode eMode, std::vector< std::unique_ptr<PDFElement> >& rElements, PDFObjectElement* pObject);
-    /// Register an object (owned directly or indirectly by m_aElements) as a provider for a given ID.
-    void SetIDObject(size_t nID, PDFObjectElement* pObject);
-    //@}
-
-    /// @name High-level functions, to be used by others.
-    //@{
-    /// Read elements from the start of the stream till its end.
-    bool Read(SvStream& rStream);
-    /// Sign the read document with xCertificate in the edit buffer.
-    bool Sign(const css::uno::Reference<css::security::XCertificate>& xCertificate, const OUString& rDescription, bool bAdES);
-    /// Serializes the contents of the edit buffer.
-    bool Write(SvStream& rStream);
-    /// Get a list of signatures embedded into this document.
-    std::vector<PDFObjectElement*> GetSignatureWidgets();
-    /**
-     * @param rInformation The actual result.
-     * @param bLast If this is the last signature in the file, so it covers the whole file physically.
-     * @return If we can determinate a result.
-     */
-    static bool ValidateSignature(SvStream& rStream, PDFObjectElement* pSignature, SignatureInformation& rInformation, bool bLast);
-    /// Remove the nth signature from read document in the edit buffer.
-    bool RemoveSignature(size_t nPosition);
-    //@}
-};
-
-} // namespace pdfio
-} // namespace xmlsecurity
-
-#endif // INCLUDED_XMLSECURITY_INC_PDFIO_PDFDOCUMENT_HXX
-
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/xmlsecurity/inc/pdfsignaturehelper.hxx b/xmlsecurity/inc/pdfsignaturehelper.hxx
index 7efdbfba421f..5667c53e734b 100644
--- a/xmlsecurity/inc/pdfsignaturehelper.hxx
+++ b/xmlsecurity/inc/pdfsignaturehelper.hxx
@@ -11,7 +11,7 @@
 #ifndef INCLUDED_XMLSECURITY_INC_PDFSIGNATUREHELPER_HXX
 #define INCLUDED_XMLSECURITY_INC_PDFSIGNATUREHELPER_HXX
 
-#include <xmlsecuritydllapi.h>
+#include <xmlsecurity/xmlsecuritydllapi.h>
 
 #include <com/sun/star/io/XInputStream.hpp>
 #include <com/sun/star/security/DocumentSignatureInformation.hpp>
diff --git a/xmlsecurity/inc/xmlsecuritydllapi.h b/xmlsecurity/inc/xmlsecuritydllapi.h
deleted file mode 100644
index 2349d239b862..000000000000
--- a/xmlsecurity/inc/xmlsecuritydllapi.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*
- * This file is part of the LibreOffice project.
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- */
-
-#ifndef INCLUDED_XMLSECURITY_INCDLLAPI_H
-#define INCLUDED_XMLSECURITY_INCDLLAPI_H
-
-#include <sal/types.h>
-
-#if defined(XMLSECURITY_DLLIMPLEMENTATION)
-#define XMLSECURITY_DLLPUBLIC SAL_DLLPUBLIC_EXPORT
-#else
-#define XMLSECURITY_DLLPUBLIC SAL_DLLPUBLIC_IMPORT
-#endif
-
-#endif // INCLUDED_XMLSECURITY_INCDLLAPI_H
-
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/xmlsecurity/inc/xmlsignaturehelper.hxx b/xmlsecurity/inc/xmlsignaturehelper.hxx
index edc09d02e430..eb44e52a2f83 100644
--- a/xmlsecurity/inc/xmlsignaturehelper.hxx
+++ b/xmlsecurity/inc/xmlsignaturehelper.hxx
@@ -27,7 +27,7 @@
 #include <rtl/ref.hxx>
 #include <sigstruct.hxx>
 #include <xsecctl.hxx>
-#include <xmlsecuritydllapi.h>
+#include <xmlsecurity/xmlsecuritydllapi.h>
 
 #include <com/sun/star/uno/XComponentContext.hpp>
 #include <com/sun/star/xml/sax/XWriter.hpp>
diff --git a/xmlsecurity/qa/unit/pdfsigning/pdfsigning.cxx b/xmlsecurity/qa/unit/pdfsigning/pdfsigning.cxx
index 51fc15ebc407..b0df29f26e34 100644
--- a/xmlsecurity/qa/unit/pdfsigning/pdfsigning.cxx
+++ b/xmlsecurity/qa/unit/pdfsigning/pdfsigning.cxx
@@ -17,7 +17,7 @@
 #include <unotools/ucbstreamhelper.hxx>
 
 #include <documentsignaturemanager.hxx>
-#include <pdfio/pdfdocument.hxx>
+#include <xmlsecurity/pdfio/pdfdocument.hxx>
 
 using namespace com::sun::star;
 
diff --git a/xmlsecurity/source/helper/pdfsignaturehelper.cxx b/xmlsecurity/source/helper/pdfsignaturehelper.cxx
index 4218a8305ee4..9e652f944201 100644
--- a/xmlsecurity/source/helper/pdfsignaturehelper.cxx
+++ b/xmlsecurity/source/helper/pdfsignaturehelper.cxx
@@ -19,7 +19,7 @@
 #include <tools/stream.hxx>
 #include <unotools/ucbstreamhelper.hxx>
 
-#include <pdfio/pdfdocument.hxx>
+#include <xmlsecurity/pdfio/pdfdocument.hxx>
 
 using namespace ::com::sun::star;
 
diff --git a/xmlsecurity/source/pdfio/pdfdocument.cxx b/xmlsecurity/source/pdfio/pdfdocument.cxx
index 0d6c7e13e06e..50e00d79c067 100644
--- a/xmlsecurity/source/pdfio/pdfdocument.cxx
+++ b/xmlsecurity/source/pdfio/pdfdocument.cxx
@@ -7,7 +7,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-#include <pdfio/pdfdocument.hxx>
+#include <xmlsecurity/pdfio/pdfdocument.hxx>
 
 #include <map>
 #include <memory>
@@ -31,6 +31,8 @@
 #include <xmloff/xmluconv.hxx>
 #include <o3tl/make_unique.hxx>
 
+#include <sigstruct.hxx>
+
 #ifdef XMLSEC_CRYPTO_NSS
 #include <cert.h>
 #include <cms.h>
@@ -87,31 +89,6 @@ public:
 
 class PDFReferenceElement;
 
-/// Dictionary object: a set key-value pairs.
-class PDFDictionaryElement : public PDFElement
-{
-    /// Key-value pairs when the dictionary is a nested value.
-    std::map<OString, PDFElement*> m_aItems;
-    /// Offset after the '<<' token.
-    sal_uInt64 m_nLocation = 0;
-    /// Position after the '/' token.
-    std::map<OString, sal_uInt64> m_aDictionaryKeyOffset;
-    /// Length of the dictionary key and value, till (before) the next token.
-    std::map<OString, sal_uInt64> m_aDictionaryKeyValueLength;
-
-public:
-    PDFDictionaryElement();
-    bool Read(SvStream& rStream) override;
-
-    static size_t Parse(const std::vector< std::unique_ptr<PDFElement> >& rElements, PDFElement* pThis, std::map<OString, PDFElement*>& rDictionary);
-    static PDFElement* Lookup(const std::map<OString, PDFElement*>& rDictionary, const OString& rKey);
-    void SetKeyOffset(const OString& rKey, sal_uInt64 nOffset);
-    sal_uInt64 GetKeyOffset(const OString& rKey) const;
-    void SetKeyValueLength(const OString& rKey, sal_uInt64 nLength);
-    sal_uInt64 GetKeyValueLength(const OString& rKey) const;
-    const std::map<OString, PDFElement*>& GetItems() const;
-};
-
 /// End of a dictionary: '>>'.
 class PDFEndDictionaryElement : public PDFElement
 {
@@ -3182,6 +3159,18 @@ PDFElement* PDFDictionaryElement::Lookup(const std::map<OString, PDFElement*>& r
     return it->second;
 }
 
+PDFObjectElement* PDFDictionaryElement::LookupObject(const OString& rDictionaryKey)
+{
+    auto pKey = dynamic_cast<PDFReferenceElement*>(PDFDictionaryElement::Lookup(m_aItems, rDictionaryKey));
+    if (!pKey)
+    {
+        SAL_WARN("xmlsecurity.pdfio", "PDFDictionaryElement::LookupObject: no such key with reference value: " << rDictionaryKey);
+        return nullptr;
+    }
+
+    return pKey->LookupObject();
+}
+
 PDFElement* PDFObjectElement::Lookup(const OString& rDictionaryKey)
 {
     if (m_aDictionary.empty())
diff --git a/xmlsecurity/workben/pdfverify.cxx b/xmlsecurity/workben/pdfverify.cxx
index d481d15e0472..5e19601ea284 100644
--- a/xmlsecurity/workben/pdfverify.cxx
+++ b/xmlsecurity/workben/pdfverify.cxx
@@ -31,7 +31,9 @@
 #include <vcl/pngwrite.hxx>
 #include <vcl/svapp.hxx>
 
-#include <pdfio/pdfdocument.hxx>
+#include <xmlsecurity/pdfio/pdfdocument.hxx>
+
+#include <sigstruct.hxx>
 
 using namespace com::sun::star;