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/*
data.h - wraps a gpgme data object
Copyright (C) 2003,2004 Klarälvdalens Datakonsult AB
This file is part of GPGME++.
GPGME++ 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.
GPGME++ 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with GPGME++; see the file COPYING.LIB. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef __GPGMEPP_DATA_H__
#define __GPGMEPP_DATA_H__
#include "global.h"
#include "key.h"
#include <sys/types.h> // for size_t, off_t
#include <cstdint> // unit64_t
#include <cstdio> // FILE
#include <algorithm>
#include <memory>
namespace GpgME
{
class DataProvider;
class Error;
class GPGMEPP_EXPORT Data
{
struct Null {
Null() {}
};
public:
/* implicit */ Data(const Null &);
Data();
explicit Data(gpgme_data_t data);
// Memory-Based Data Buffers:
Data(const char *buffer, size_t size, bool copy = true);
explicit Data(const char *filename);
Data(const char *filename, off_t offset, size_t length);
Data(std::FILE *fp, off_t offset, size_t length);
// File-Based Data Buffers:
explicit Data(std::FILE *fp);
explicit Data(int fd);
// Callback-Based Data Buffers:
explicit Data(DataProvider *provider);
static const Null null;
Data(const Data &other) = default;
const Data &operator=(Data other)
{
swap(other);
return *this;
}
void swap(Data &other)
{
using std::swap;
swap(this->d, other.d);
}
bool isNull() const;
enum Encoding {
AutoEncoding,
BinaryEncoding,
Base64Encoding,
ArmorEncoding,
MimeEncoding,
UrlEncoding,
UrlEscEncoding,
Url0Encoding,
};
Encoding encoding() const;
Error setEncoding(Encoding encoding);
enum Type {
Invalid,
Unknown,
PGPSigned,
PGPOther,
PGPKey,
CMSSigned,
CMSEncrypted,
CMSOther,
X509Cert,
PKCS12,
PGPEncrypted,
PGPSignature,
};
Type type() const;
char *fileName() const;
Error setFileName(const char *name);
Error setFileName(const std::string &name);
ssize_t read(void *buffer, size_t length);
ssize_t write(const void *buffer, size_t length);
off_t seek(off_t offset, int whence);
/* Convenience function to do a seek (0, SEEK_SET). */
Error rewind();
/** Try to parse the data to a key object using the
* Protocol proto. Returns an empty list on error.*/
std::vector<Key> toKeys(const Protocol proto = Protocol::OpenPGP) const;
/** Return a copy of the data as std::string. Sets seek pos to 0 */
std::string toString();
/** See gpgme_data_set_flag */
Error setFlag(const char *name, const char *value);
/** Set a size hint for this data e.g. for progress calculations. */
Error setSizeHint(uint64_t size);
class Private;
Private *impl()
{
return d.get();
}
const Private *impl() const
{
return d.get();
}
private:
std::shared_ptr<Private> d;
};
}
GPGMEPP_MAKE_STD_SWAP_SPECIALIZATION(Data)
#endif // __GPGMEPP_DATA_H__
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