/**

* @file prefix6.h

* @author Nato Morichika <nat@nat.moe>

* @brief IPv6 Route/Prefix related utilities.

* @version 0.1

* @date 2019-07-21

*

* @copyright Copyright (c) 2019

*

*/

#ifndef BGP_PREFIX6_H_

#define BGP_PREFIX6_H_

#include <stdint.h>

#include <unistd.h>

#include "prefix.h"

namespace libbgp {

bool cidr_to_mask6(uint8_t src, uint8_t dst[16]);

bool mask_ipv6(const uint8_t prefix[16], uint8_t mask, uint8_t masked_addr[16]);

bool v6addr_is_zero(const uint8_t prefix[16]);

/**

* @brief IPv6 Route/Prefix related utilities.

*

*/

class Prefix6 : public Prefix {

public:

Prefix6();

Prefix6(const uint8_t prefix[16], uint8_t length);

Prefix6(const char* prefix, uint8_t length);

ssize_t parse(const uint8_t *buffer, size_t buf_sz);

ssize_t write(uint8_t *buffer, size_t buf_sz) const;

// static utility functions for route include test

static bool Includes (const uint8_t prefix[16], uint8_t length, const uint8_t address[16]);

static bool Includes (const uint8_t prefix_a[16], uint8_t length_a, const uint8_t prefix_b[16], uint8_t length_b);

// test if address in prefix

bool includes (const uint8_t address[16]) const;

bool includes (const char* address) const;

// test if route other is sub-prefix

bool includes (const Prefix &other) const;

bool includes (const uint8_t prefix[16], uint8_t length) const;

bool includes (const char* prefix, uint8_t length) const;

// test if length & prefix equals to other

bool operator== (const Prefix &other) const;

// test if length smaller (prefix size bigger) then other. prefix must be

// same to do this.

bool operator> (const Prefix &other) const;

// test if length bigger (prefix size smaller) then other. prefix must be

// same to do this.

bool operator< (const Prefix &other) const;

bool operator>= (const Prefix &other) const;

bool operator<= (const Prefix &other) const;

bool operator!= (const Prefix &other) const;

bool set(const uint8_t prefix[16], uint8_t length);

bool setPrefix(const uint8_t prefix[16]);

bool setLength(uint8_t length);

void getPrefix(uint8_t prefix[16]) const;

uint8_t getLength() const;

void getMask(uint8_t mask[16]) const;

private:

uint8_t length;

uint8_t prefix[16];

};

}

#endif // BGP_PREFIX6_H_