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/*
* We need a registy of name server addresses. For each, we retain an RTT
* and a list of name server names which have used this address.
*/
tree_t *by_nsaddr;
struct by_nsaddr {
u_int32_t rtt; /* measured. */
char **names; /* NULL terminated array; strdup'd. */
};
/*
* "struct server" is a name server, which can have many addresses. There
* is no central registry of servers, since each creator can have a different
* idea of what the addresses are.
*/
struct server {
char *name; /* made with strdup. */
struct sockaddr_in *addrs; /* counted array. */
int n_addrs; /* array size. */
};
/*
* "struct zone" is a zone cut.
*/
tree_t *by_class; /* zone[class]. */
struct zone {
enum {master, slave, cache, boot}
type;
/* Servers learned from boot cache, a parent zone, or !auth answer. */
struct server *servers_notauth;
/* Servers learned from authoritative answer or local zone. */
struct server *servers_auth;
/* Root node of zone. */
struct node *root;
};
struct node {
char *label; /* made with strdup. */
tree_t *subs; /* subdomains (node[label]). */
/* really this is "data" since for the zone cut tree we have no sets.*/
tree_t *rrsets; /* rr sets (rrset[type]). */
};
struct rrset {
rrtype type;
u_int32_t ttl;
u_char data[1]; /* struct size constrains this. */
};
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