81 lines
2.5 KiB
C++
81 lines
2.5 KiB
C++
/***************************************************************************
|
|
* By Théophile Bastian, 2017
|
|
* M1 Network course project at ENS Cachan, Juliusz Chroboczek.
|
|
* License: WTFPL v2 <http://www.wtfpl.net/>
|
|
**************************************************************************/
|
|
|
|
/***************************************************************************
|
|
* Reused from a former project, by Théophile Bastian & Nathanaël Courant
|
|
* git@github.com:tobast/sysres-pikern.git
|
|
**************************************************************************/
|
|
|
|
#pragma once
|
|
|
|
#include <cstdlib>
|
|
#include <vector>
|
|
#include <exception>
|
|
|
|
#include "data.h"
|
|
|
|
class Bytes {
|
|
public:
|
|
class OutOfRange : public std::exception {};
|
|
/// Exception -- thrown by operator[]
|
|
|
|
Bytes();
|
|
Bytes(const void* buff, size_t len);
|
|
/// Initializes the object with [buff], reading [len] bytes.
|
|
|
|
u8& operator[](const size_t pos);
|
|
u8 operator[](const size_t pos) const;
|
|
/// Accesses the [pos]th element. Throws OutOfRange if pos >= size()
|
|
|
|
u16 ushortAt(const size_t pos) const;
|
|
/// Accesses the 16 bits unsigned integet at position [pos].
|
|
/// Throws OutOfRange if [pos+15] >= size().
|
|
|
|
size_t size() const;
|
|
/// Returns the number of chars in the object.
|
|
|
|
Bytes& operator<<(char v);
|
|
Bytes& operator<<(u8 v);
|
|
Bytes& operator<<(u16 v);
|
|
Bytes& operator<<(u32 v);
|
|
Bytes& operator<<(u64 v);
|
|
Bytes& operator<<(const Bytes& v);
|
|
Bytes& operator<<(const char* str);
|
|
/// Appends the given data to the vector. Returns *this to allow
|
|
/// chaining.
|
|
|
|
Bytes& operator>>(u8& v);
|
|
Bytes& operator>>(u16& v);
|
|
Bytes& operator>>(u32& v);
|
|
Bytes& operator>>(u64& v);
|
|
Bytes& operator>>(char& c);
|
|
/// Extracts the given data type from the vector. Returns *this to
|
|
/// allow chaining.
|
|
|
|
void operator=(const Bytes& oth);
|
|
/// Copies the given Bytes object into its own data.
|
|
|
|
Bytes sub(size_t beg, size_t len) const;
|
|
/// Extracts a sub-bytes, beginning at character [beg], containing
|
|
/// [len] chars. If [beg+len] >= [size()], throws OutOfRange.
|
|
|
|
void writeToBuffer(void* buff, unsigned maxLen=0) const;
|
|
/// Writes the contents of this array in the buffer [buff].
|
|
/// The user must provide a buffer of at least [size()] bytes.
|
|
/// If [maxLen] != 0, writes at most [maxLen] bytes to buff.
|
|
|
|
void hexdump(Bytes& dest) const;
|
|
/// Dumps the packet to [dest] in hexadecimal form.
|
|
|
|
private: //meth
|
|
template<typename T> void insertData(T v);
|
|
template<typename T> void extractData(T& v);
|
|
|
|
private:
|
|
std::vector<u8> data;
|
|
size_t firstIndex;
|
|
};
|
|
|