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xmlsecurity: use pdfium to generate a preview in pdfverify

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This is just test code to check if the bundled pdfium is usable.

Change-Id: I1f1d808796fe77924518cd004d99affe70279e88
Reviewed-on: https://gerrit.libreoffice.org/34081
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>
This commit is contained in:
Miklos Vajna 2017-02-09 13:47:33 +01:00
parent 3b536279ed
commit ea92b7cc2e
2 changed files with 94 additions and 0 deletions
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5
xmlsecurity/Executable_pdfverify.mk
View File

@ -11,6 +11,10 @@ $(eval $(call gb_Executable_Executable,pdfverify))
$(eval $(call gb_Executable_use_sdk_api,pdfverify))
$(eval $(call gb_Executable_use_externals,pdfverify,\
pdfium \
))
$(eval $(call gb_Executable_set_include,pdfverify,\
$$(INCLUDE) \
-I$(SRCDIR)/xmlsecurity/inc \
@ -22,6 +26,7 @@ $(eval $(call gb_Executable_use_libraries,pdfverify,\
cppuhelper \
sal \
tl \
vcl \
xmlsecurity \
))

89
xmlsecurity/workben/pdfverify.cxx
View File

@ -9,6 +9,15 @@
#include <iostream>
#ifdef WNT
#include <prewin.h>
#endif
#include <fpdfview.h>
#include <fpdf_edit.h>
#ifdef WNT
#include <postwin.h>
#endif
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <com/sun/star/xml/crypto/SEInitializer.hpp>
@ -17,6 +26,10 @@
#include <cppuhelper/bootstrap.hxx>
#include <osl/file.hxx>
#include <sal/main.h>
#include <vcl/bitmap.hxx>
#include <vcl/bitmapaccess.hxx>
#include <vcl/pngwrite.hxx>
#include <vcl/svapp.hxx>
#include <pdfio/pdfdocument.hxx>
@ -24,6 +37,73 @@ using namespace com::sun::star;
namespace
{
/// Convert to inch, then assume 96 DPI.
double pointToPixel(double fPoint)
{
return fPoint / 72 * 96;
}
/// Does PDF to PNG conversion using pdfium.
void generatePreview(const OString& rPdfPath, const OString& rPngPath)
{
FPDF_LIBRARY_CONFIG aConfig;
aConfig.version = 2;
aConfig.m_pUserFontPaths = nullptr;
aConfig.m_pIsolate = nullptr;
aConfig.m_v8EmbedderSlot = 0;
FPDF_InitLibraryWithConfig(&aConfig);
// Read input into a buffer.
OUString aInURL;
osl::FileBase::getFileURLFromSystemPath(OUString::fromUtf8(rPdfPath), aInURL);
SvFileStream aInStream(aInURL, StreamMode::READ);
SvMemoryStream aInBuffer;
aInBuffer.WriteStream(aInStream);
// Load the buffer using pdfium.
FPDF_DOCUMENT pPdfDocument = FPDF_LoadMemDocument(aInBuffer.GetData(), aInBuffer.GetSize(), /*password=*/nullptr);
if (!pPdfDocument)
return;
// Render the first page.
FPDF_PAGE pPdfPage = FPDF_LoadPage(pPdfDocument, /*page_index=*/0);
if (!pPdfPage)
return;
// Returned unit is points, convert that to pixel.
int nPageWidth = pointToPixel(FPDF_GetPageWidth(pPdfPage));
int nPageHeight = pointToPixel(FPDF_GetPageHeight(pPdfPage));
FPDF_BITMAP pPdfBitmap = FPDFBitmap_Create(nPageWidth, nPageHeight, /*alpha=*/1);
if (!pPdfBitmap)
return;
FPDF_DWORD nColor = FPDFPage_HasTransparency(pPdfPage) ? 0x00000000 : 0xFFFFFFFF;
FPDFBitmap_FillRect(pPdfBitmap, 0, 0, nPageWidth, nPageHeight, nColor);
FPDF_RenderPageBitmap(pPdfBitmap, pPdfPage, /*start_x=*/0, /*start_y=*/0, nPageWidth, nPageHeight, /*rotate=*/0, /*flags=*/0);
// Save the buffer as a PNG file.
Bitmap aBitmap(Size(nPageWidth, nPageHeight), 32);
{
Bitmap::ScopedWriteAccess pWriteAccess(aBitmap);
const void* pPdfBuffer = FPDFBitmap_GetBuffer(pPdfBitmap);
std::memcpy(pWriteAccess->GetBuffer(), pPdfBuffer, nPageWidth * nPageHeight * 4);
}
BitmapEx aBitmapEx(aBitmap);
#ifdef WNT
aBitmapEx.Mirror(BmpMirrorFlags::Vertical);
#endif
vcl::PNGWriter aWriter(aBitmapEx);
OUString aOutURL;
osl::FileBase::getFileURLFromSystemPath(OUString::fromUtf8(rPngPath), aOutURL);
SvFileStream aOutStream(aOutURL, StreamMode::WRITE);
aWriter.Write(aOutStream);
FPDFBitmap_Destroy(pPdfBitmap);
FPDF_ClosePage(pPdfPage);
FPDF_CloseDocument(pPdfDocument);
FPDF_DestroyLibrary();
}
int pdfVerify(int nArgc, char** pArgv)
{
if (nArgc < 2)
@ -46,6 +126,15 @@ int pdfVerify(int nArgc, char** pArgv)
uno::Reference<lang::XMultiComponentFactory> xMultiComponentFactory = xComponentContext->getServiceManager();
uno::Reference<lang::XMultiServiceFactory> xMultiServiceFactory(xMultiComponentFactory, uno::UNO_QUERY);
comphelper::setProcessServiceFactory(xMultiServiceFactory);
if (nArgc > 3 && OString(pArgv[3]) == "-p")
{
InitVCL();
generatePreview(pArgv[1], pArgv[2]);
DeInitVCL();
return 0;
}
uno::Reference<xml::crypto::XSEInitializer> xSEInitializer;
try
{