pupdns/include/dns_packet_buffer.h

#pragma once
#include <stddef.h>

#define PB_SIZE 512
#define PB_OUT_OF_BOUNDS 9999;

struct DNSPacketBuffer {
    unsigned char buf[PB_SIZE];
    size_t pos;
};

struct DNSPacketBuffer *new_dns_packet_buffer();

struct DNSPacketHeader *dns_header(struct DNSPacketBuffer);

unsigned char pb_read_byte(struct DNSPacketBuffer *);