Utility functions for Dwm::Dns. More...

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <cstdint>
#include <string>

Include dependency graph for DwmDnsUtils.hh:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Functions
bool	operator== (const in6_addr &addr1, const in6_addr &addr2)

bool	operator< (const in6_addr &addr1, const in6_addr &addr2)

bool	operator== (const in_addr &addr1, const in_addr &addr2)

bool	operator< (const in_addr &addr1, const in_addr &addr2)

uint8_t *	Dwm::Dns::EncodeCharacterString (const std::string &s, uint8_t pkt, uint8_t ptr, uint16_t pktlen)
	Encodes the given string `into` buffer `pkt` of length `pktlen` as a DNS 'character string' starting at `ptr`. More...

const uint8_t *	Dwm::Dns::DecodeCharacterString (std::string &s, const uint8_t pkt, const uint8_t ptr, uint16_t pktlen)
	Decodes a DNS 'character string' from buffer `pkt` of length `pktlen` into `s`, starting at `ptr`. More...

bool	Dwm::Dns::ToArpa (const std::string &ipAddr, std::string &arpa)
	Converts the given IP address `ipAddr` into `arpa` in ARPA domain form. More...

void	Dwm::Dns::ToArpa (const in_addr &inAddr, std::string &arpa)
	Converts the given IPv4 address `inAddr` into `arpa` in ARPA domain form. More...

void	Dwm::Dns::ToArpa (const in6_addr &in6Addr, std::string &arpa)
	Converts the given IPv6 address `in6Addr` into `arpa` in ARPA domain form. More...

bool	Dwm::Dns::FromArpa (const std::string &arpa, std::string &ipAddr)
	Converts the given ARPA domain `arpa` into `ipAddr`. More...

Detailed Description

Utility functions for Dwm::Dns.

Function Documentation

◆ DecodeCharacterString()

const uint8_t* Dwm::Dns::DecodeCharacterString	(	std::string &	s,
		const uint8_t *	pkt,
		const uint8_t *	ptr,
		uint16_t	pktlen
	)

Decodes a DNS 'character string' from buffer pkt of length pktlen into s, starting at ptr.

Returns the address immediately following the encoded character string in pkt on success. Throws std::out_of_range if pkt was too short to contain the encoded character string.

◆ EncodeCharacterString()

uint8_t* Dwm::Dns::EncodeCharacterString	(	const std::string &	s,
		uint8_t *	pkt,
		uint8_t *	ptr,
		uint16_t	pktlen
	)

Encodes the given string into buffer pkt of length pktlen as a DNS 'character string' starting at ptr.

Returns the address immediately following the encoded character string in pkt on success. Throws std::out_of_range if the encoded character string will not fit in pkt.

◆ FromArpa()

bool Dwm::Dns::FromArpa	(	const std::string &	arpa,
		std::string &	ipAddr
	)

Converts the given ARPA domain arpa into ipAddr.

Returns true on success, false on failure.

◆ ToArpa() [1/3]

bool Dwm::Dns::ToArpa	(	const std::string &	ipAddr,
		std::string &	arpa
	)

Converts the given IP address ipAddr into arpa in ARPA domain form.

ARPA form is used for PTR lookups. Returns true on success, false on failure.

◆ ToArpa() [2/3]

void Dwm::Dns::ToArpa	(	const in_addr &	inAddr,
		std::string &	arpa
	)

Converts the given IPv4 address inAddr into arpa in ARPA domain form.

ARPA form is used for PTR lookups.

◆ ToArpa() [3/3]

void Dwm::Dns::ToArpa	(	const in6_addr &	in6Addr,
		std::string &	arpa
	)

Converts the given IPv6 address in6Addr into arpa in ARPA domain form.