/usr/include/podofo/doc/PdfSignOutputDevice.h is in libpodofo-dev 0.9.4-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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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. *
* *
* In addition, as a special exception, the copyright holders give *
* permission to link the code of portions of this program with the *
* OpenSSL library under certain conditions as described in each *
* individual source file, and distribute linked combinations *
* including the two. *
* You must obey the GNU General Public License in all respects *
* for all of the code used other than OpenSSL. If you modify *
* file(s) with this exception, you may extend this exception to your *
* version of the file(s), but you are not obligated to do so. If you *
* do not wish to do so, delete this exception statement from your *
* version. If you delete this exception statement from all source *
* files in the program, then also delete it here. *
***************************************************************************/
#ifndef _PODOFO_SIGN_OUTPUT_DEVICE_H_
#define _PODOFO_SIGN_OUTPUT_DEVICE_H_
#include "../base/PdfOutputDevice.h"
#include "../base/PdfData.h"
#include "../base/PdfString.h"
namespace PoDoFo
{
/** Signer class
*
* Class is used to locate place for signature in the stream.
* Usage:
* 1. Locate signature and adjust ByteRange
* 2. Generate signature
* 3. Insert new signature
*/
class PODOFO_DOC_API PdfSignOutputDevice :public PdfOutputDevice
{
public:
PdfSignOutputDevice(PdfOutputDevice *pRealDevice);
PdfSignOutputDevice(const char* pszFilename);
#ifdef WIN32
PdfSignOutputDevice( const wchar_t* pszFilename );
#endif
virtual ~PdfSignOutputDevice();
/** Set string to lookup for
*
* \param lSignatureSize Total space reserved for signature
*/
virtual void SetSignatureSize(size_t lSignatureSize);
/** Get expected size of signature.
*
* If reserved size if zero no signatures will be added.
* \return Total space reserved for signature.
*/
virtual size_t GetSignatureSize()const;
/** Return signature beacon
*
*/
virtual const PdfData *GetSignatureBeacon()const{ return m_pSignatureBeacon; }
virtual bool HasSignaturePosition()const { return m_bBeaconFound; }
/** Modify ByteRange entry according to signature position
*
*/
virtual void AdjustByteRange();
/** Read data for signature
*/
virtual size_t ReadForSignature(char* pBuffer, size_t lLen);
/** Embed real signature in the PDF
*/
virtual void SetSignature(const PdfData &sigData);
virtual inline size_t GetLength() const
{
return m_pRealDevice->GetLength();
}
virtual void Print( const char* pszFormat, ... )
{
va_list args;
long lBytes;
va_start( args, pszFormat );
lBytes = m_pRealDevice->PrintVLen(pszFormat, args);
va_end( args );
va_start( args, pszFormat );
m_pRealDevice->PrintV(pszFormat, lBytes, args);
va_end( args );
}
virtual void Write( const char* pBuffer, size_t lLen );
virtual size_t Read( char* pBuffer, size_t lLen )
{
return m_pRealDevice->Read(pBuffer, lLen);
}
virtual void Seek( size_t offset )
{
m_pRealDevice->Seek(offset);
}
virtual inline size_t Tell() const
{
return m_pRealDevice->Tell();
}
virtual void Flush()
{
m_pRealDevice->Flush();
}
private:
void Init();
PdfOutputDevice* m_pRealDevice;
bool m_bDevOwner;
PdfData* m_pSignatureBeacon;
size_t m_sBeaconPos;
bool m_bBeaconFound;
};
}
#endif
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