/usr/include/Poco/Crypto/CryptoStream.h is in libpoco-dev 1.3.6p1-1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 | //
// CryptoStream.h
//
// $Id: //poco/1.3/Crypto/include/Poco/Crypto/CryptoStream.h#4 $
//
// Library: Crypto
// Package: Cipher
// Module: CryptoStream
//
// Definition of the CryptoStreamBuf, CryptoInputStream and CryptoOutputStream
// classes.
//
// Copyright (c) 2008, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#ifndef Crypto_CryptoStream_INCLUDED
#define Crypto_CryptoStream_INCLUDED
#include "Poco/Crypto/Crypto.h"
#include "Poco/BufferedStreamBuf.h"
#include "Poco/Buffer.h"
#include <iostream>
namespace Poco {
namespace Crypto {
class CryptoTransform;
class Cipher;
class Crypto_API CryptoStreamBuf: public Poco::BufferedStreamBuf
/// This stream buffer performs cryptographic transformation on the data
/// going through it.
{
public:
CryptoStreamBuf(std::istream& istr, CryptoTransform* pTransform, std::streamsize bufferSize = 8192);
CryptoStreamBuf(std::ostream& ostr, CryptoTransform* pTransform, std::streamsize bufferSize = 8192);
virtual ~CryptoStreamBuf();
void close();
/// Flushes all buffers and finishes the encryption.
protected:
int readFromDevice(char* buffer, std::streamsize length);
int writeToDevice(const char* buffer, std::streamsize length);
private:
CryptoTransform* _pTransform;
std::istream* _pIstr;
std::ostream* _pOstr;
bool _eof;
Poco::Buffer<unsigned char> _buffer;
CryptoStreamBuf(const CryptoStreamBuf&);
CryptoStreamBuf& operator = (const CryptoStreamBuf&);
};
class Crypto_API CryptoIOS: public virtual std::ios
/// The base class for CryptoInputStream and CryptoOutputStream.
///
/// This class is needed to ensure correct initialization order of the
/// stream buffer and base classes.
{
public:
CryptoIOS(std::istream& istr, CryptoTransform* pTransform, std::streamsize bufferSize = 8192);
CryptoIOS(std::ostream& ostr, CryptoTransform* pTransform, std::streamsize bufferSize = 8192);
~CryptoIOS();
CryptoStreamBuf* rdbuf();
protected:
CryptoStreamBuf _buf;
};
class Crypto_API CryptoInputStream: public CryptoIOS, public std::istream
/// This stream transforms all data passing through it using the given
/// CryptoTransform.
///
/// Use a CryptoTransform object provided by Cipher::createEncrytor() or
/// Cipher::createDecryptor() to create an encrypting or decrypting stream,
/// respectively.
{
public:
CryptoInputStream(std::istream& istr, CryptoTransform* pTransform, std::streamsize bufferSize = 8192);
/// Create a new CryptoInputStream object. The CryptoInputStream takes the
/// ownership of the given CryptoTransform object.
CryptoInputStream(std::istream& istr, Cipher& cipher, std::streamsize bufferSize = 8192);
/// Create a new encrypting CryptoInputStream object using the given cipher.
~CryptoInputStream();
/// Destroys the CryptoInputStream.
};
class Crypto_API CryptoOutputStream: public CryptoIOS, public std::ostream
/// This stream transforms all data passing through it using the given
/// CryptoTransform.
///
/// Use a CryptoTransform object provided by Cipher::createEncrytor() or
/// Cipher::createDecryptor() to create an encrypting or decrypting stream,
/// respectively.
///
/// After all data has been passed through the stream, close() must be called
/// to ensure completion of cryptographic transformation.
{
public:
CryptoOutputStream(std::ostream& ostr, CryptoTransform* pTransform, std::streamsize bufferSize = 8192);
/// Create a new CryptoOutputStream object. The CryptoOutputStream takes the
/// ownership of the given CryptoTransform object.
CryptoOutputStream(std::ostream& ostr, Cipher& cipher, std::streamsize bufferSize = 8192);
/// Create a new decrypting CryptoOutputStream object using the given cipher.
~CryptoOutputStream();
/// Destroys the CryptoOutputStream.
void close();
/// Flushes all buffers and finishes the encryption.
};
} } // namespace Poco::Crypto
#endif // Crypto_CryptoStream_INCLUDED
|