/usr/include/botan-1.10/botan/data_src.h is in libbotan1.10-dev 1.10.12-1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 | /*
* DataSource
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_DATA_SRC_H__
#define BOTAN_DATA_SRC_H__
#include <botan/secmem.h>
#include <string>
#include <iosfwd>
namespace Botan {
/**
* This class represents an abstract data source object.
*/
class BOTAN_DLL DataSource
{
public:
/**
* Read from the source. Moves the internal offset so that every
* call to read will return a new portion of the source.
*
* @param out the byte array to write the result to
* @param length the length of the byte array out
* @return length in bytes that was actually read and put
* into out
*/
virtual size_t read(byte out[], size_t length) = 0;
/**
* Read from the source but do not modify the internal
* offset. Consecutive calls to peek() will return portions of
* the source starting at the same position.
*
* @param out the byte array to write the output to
* @param length the length of the byte array out
* @param peek_offset the offset into the stream to read at
* @return length in bytes that was actually read and put
* into out
*/
virtual size_t peek(byte out[], size_t length,
size_t peek_offset) const = 0;
/**
* Test whether the source still has data that can be read.
* @return true if there is still data to read, false otherwise
*/
virtual bool end_of_data() const = 0;
/**
* return the id of this data source
* @return std::string representing the id of this data source
*/
virtual std::string id() const { return ""; }
virtual bool check_available(size_t n) = 0;
/**
* Read one byte.
* @param out the byte to read to
* @return length in bytes that was actually read and put
* into out
*/
size_t read_byte(byte& out);
/**
* Peek at one byte.
* @param out an output byte
* @return length in bytes that was actually read and put
* into out
*/
size_t peek_byte(byte& out) const;
/**
* Discard the next N bytes of the data
* @param N the number of bytes to discard
* @return number of bytes actually discarded
*/
size_t discard_next(size_t N);
DataSource() {}
virtual ~DataSource() {}
private:
DataSource& operator=(const DataSource&) { return (*this); }
DataSource(const DataSource&);
};
/**
* This class represents a Memory-Based DataSource
*/
class BOTAN_DLL DataSource_Memory : public DataSource
{
public:
size_t read(byte[], size_t);
size_t peek(byte[], size_t, size_t) const;
bool check_available(size_t n);
bool end_of_data() const;
/**
* Construct a memory source that reads from a string
* @param in the string to read from
*/
DataSource_Memory(const std::string& in);
/**
* Construct a memory source that reads from a byte array
* @param in the byte array to read from
* @param length the length of the byte array
*/
DataSource_Memory(const byte in[], size_t length);
/**
* Construct a memory source that reads from a MemoryRegion
* @param in the MemoryRegion to read from
*/
DataSource_Memory(const MemoryRegion<byte>& in);
private:
SecureVector<byte> source;
size_t offset;
};
/**
* This class represents a Stream-Based DataSource.
*/
class BOTAN_DLL DataSource_Stream : public DataSource
{
public:
size_t read(byte[], size_t);
size_t peek(byte[], size_t, size_t) const;
bool check_available(size_t n);
bool end_of_data() const;
std::string id() const;
DataSource_Stream(std::istream&,
const std::string& id = "<std::istream>");
/**
* Construct a Stream-Based DataSource from file
* @param file the name of the file
* @param use_binary whether to treat the file as binary or not
*/
DataSource_Stream(const std::string& file, bool use_binary = false);
~DataSource_Stream();
private:
const std::string identifier;
std::istream* source_p;
std::istream& source;
size_t total_read;
};
}
#endif
|