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/***************************************************************************
* Copyright (C) 2011 by Dominik Seichter *
* domseichter@web.de *
* by Petr Pytelka *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Library General Public License as *
* published by the Free Software Foundation; either version 2 of the *
* License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "../../src/podofo.h"
#include "../PdfTest.h"
#include <iostream>
#include <cstdio>
#include <fstream>
using namespace PoDoFo;
#define CONVERSION_CONSTANT 0.002834645669291339
void CreateSimpleForm( PdfPage* pPage, PdfStreamedDocument* pDoc, const PdfData &signatureData )
{
PdfPainter painter;
PdfFont* pFont = pDoc->CreateFont( "Courier" );
painter.SetPage( pPage );
painter.SetFont( pFont );
painter.DrawText( 10000 * CONVERSION_CONSTANT, 280000 * CONVERSION_CONSTANT, "PoDoFo Sign Test" );
painter.FinishPage();
PdfSignatureField signField( pPage, PdfRect( 70000 * CONVERSION_CONSTANT, 10000 * CONVERSION_CONSTANT,
50000 * CONVERSION_CONSTANT, 50000 * CONVERSION_CONSTANT ), pDoc );
signField.SetFieldName("SignatureFieldName");
signField.SetSignature(signatureData);
signField.SetSignatureReason("I agree");
}
int main( int argc, char* argv[] )
{
PdfPage* pPage;
if( argc != 2 )
{
printf("Usage: SignTest [output_filename]\n");
printf(" - Create a PDF ready to be signed\n");
return 0;
}
PdfSignOutputDevice signer(argv[1]);
// Reserve space for signature
signer.SetSignatureSize(1024);
PdfStreamedDocument writer( &signer, PoDoFo::ePdfVersion_1_5 );
// Disable default appearance
writer.GetAcroForm(ePdfCreateObject, PdfAcroForm::ePdfAcroFormDefaultAppearance_None);
pPage = writer.CreatePage( PdfPage::CreateStandardPageSize( ePdfPageSize_A4 ) );
TEST_SAFE_OP( CreateSimpleForm( pPage, &writer, *signer.GetSignatureBeacon() ) );
TEST_SAFE_OP( writer.Close() );
// Adjust ByteRange for signature
if(signer.HasSignaturePosition()) {
signer.AdjustByteRange();
// read data for signature and count it
signer.Seek(0);
// generate digest and count signature
// use NSS, MS Crypto API or OpenSSL
// to generate signature in DER format
char buff[65536];
size_t len;
while( (len = signer.ReadForSignature(buff, 65536))>0 )
{
}
// Paste signature to the file
PdfData sigData("my-real-signature");
signer.SetSignature(sigData);
}
signer.Flush();
return 0;
}
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