proto-dns-parse.h

#ifndef PROTO_DNS_PARSE_H
#define PROTO_DNS_PARSE_H
struct DomainPointer
{
    const unsigned char *name;
    unsigned length;
};
struct DNS_Incoming
{
    unsigned id;        /* transaction id */
    unsigned is_valid:1;
    unsigned is_formerr:1;
    unsigned is_edns0:1;/* edns0 features found */
    unsigned qr:1;      /* 'query' or 'response' */
    unsigned aa:1;      /* 'authoritative answer' */
    unsigned tc:1;      /* 'truncation' */
    unsigned rd:1;      /* 'recursion desired' */
    unsigned ra:1;      /* 'recursion available' */
    unsigned z:3;       /* reserved */
    unsigned opcode;
    unsigned rcode;     /* response error code */
    unsigned qdcount;   /* query count */
    unsigned ancount;   /* answer count */
    unsigned nscount;   /* name-server/authority count */
    unsigned arcount;   /* additional record count */
    struct {
        unsigned payload_size;
        unsigned version;
        unsigned z;
    } edns0;
    const unsigned char *req;
    unsigned req_length;

    /* the query name */
    struct DomainPointer query_name;
    unsigned query_type;
    unsigned char query_name_buffer[256];

    unsigned rr_count;
    unsigned short rr_offset[1024];
    unsigned edns0_offset;
};


void
proto_dns_parse(struct DNS_Incoming *dns, const unsigned char px[], unsigned offset, unsigned max);

unsigned
dns_name_skip(const unsigned char px[], unsigned offset, unsigned max);

#endif