#include "util/rbtree.h"
Data Structures | |
struct | iter_forwards |
Iterator forward zones structure. More... | |
struct | iter_forward_zone |
Iterator forward servers for a particular zone. More... | |
Functions | |
struct iter_forwards * | forwards_create (void) |
Create forwards. More... | |
void | forwards_delete (struct iter_forwards *fwd) |
Delete forwards. More... | |
int | forwards_apply_cfg (struct iter_forwards *fwd, struct config_file *cfg) |
Process forwards config. More... | |
struct delegpt * | forwards_find (struct iter_forwards *fwd, uint8_t *qname, uint16_t qclass) |
Find forward zone exactly by name. More... | |
struct delegpt * | forwards_lookup (struct iter_forwards *fwd, uint8_t *qname, uint16_t qclass) |
Find forward zone information For this qname/qclass find forward zone information, returns delegation point with server names and addresses, or NULL if no forwarding is needed. More... | |
struct delegpt * | forwards_lookup_root (struct iter_forwards *fwd, uint16_t qclass) |
Same as forwards_lookup, but for the root only. More... | |
int | forwards_next_root (struct iter_forwards *fwd, uint16_t *qclass) |
Find next root item in forwards lookup tree. More... | |
size_t | forwards_get_mem (struct iter_forwards *fwd) |
Get memory in use by forward storage. More... | |
int | fwd_cmp (const void *k1, const void *k2) |
compare two fwd entries | |
int | forwards_add_zone (struct iter_forwards *fwd, uint16_t c, struct delegpt *dp) |
Add zone to forward structure. More... | |
void | forwards_delete_zone (struct iter_forwards *fwd, uint16_t c, uint8_t *nm) |
Remove zone from forward structure. More... | |
int | forwards_add_stub_hole (struct iter_forwards *fwd, uint16_t c, uint8_t *nm) |
Add stub hole (empty entry in forward table, that makes resolution skip a forward-zone because the stub zone should override the forward zone). More... | |
void | forwards_delete_stub_hole (struct iter_forwards *fwd, uint16_t c, uint8_t *nm) |
Remove stub hole, if one exists. More... | |
This file contains functions to assist the iterator module. Keep track of forward zones, and read those from config.
struct iter_forwards* forwards_create | ( | void | ) |
Create forwards.
Referenced by check_fwd(), and libworker_setup().
void forwards_delete | ( | struct iter_forwards * | fwd | ) |
Delete forwards.
fwd | to delete. |
Referenced by libworker_delete_env(), libworker_setup(), and worker_delete().
int forwards_apply_cfg | ( | struct iter_forwards * | fwd, |
struct config_file * | cfg | ||
) |
Process forwards config.
fwd | where to store. |
cfg | config options. |
Referenced by check_fwd(), and libworker_setup().
struct delegpt* forwards_find | ( | struct iter_forwards * | fwd, |
uint8_t * | qname, | ||
uint16_t | qclass | ||
) |
Find forward zone exactly by name.
fwd | forward storage. |
qname | The qname of the query. |
qclass | The qclass of the query. |
References iter_forward_zone::dclass, dname_count_size_labels(), rbnode_type::key, iter_forward_zone::name, iter_forward_zone::namelabs, iter_forward_zone::namelen, iter_forward_zone::node, rbtree_search(), and iter_forwards::tree.
Referenced by can_have_last_resort().
struct delegpt* forwards_lookup | ( | struct iter_forwards * | fwd, |
uint8_t * | qname, | ||
uint16_t | qclass | ||
) |
Find forward zone information For this qname/qclass find forward zone information, returns delegation point with server names and addresses, or NULL if no forwarding is needed.
fwd | forward storage. |
qname | The qname of the query. |
qclass | The qclass of the query. |
References iter_forward_zone::dclass, dname_count_size_labels(), dname_lab_cmp(), iter_forward_zone::dp, rbnode_type::key, iter_forward_zone::name, iter_forward_zone::namelabs, iter_forward_zone::namelen, iter_forward_zone::node, iter_forward_zone::parent, rbtree_find_less_equal(), and iter_forwards::tree.
Referenced by forward_request(), forwards_lookup_root(), iter_stub_fwd_no_cache(), and print_root_fwds().
struct delegpt* forwards_lookup_root | ( | struct iter_forwards * | fwd, |
uint16_t | qclass | ||
) |
Same as forwards_lookup, but for the root only.
fwd | forward storage. |
qclass | The qclass of the query. |
References forwards_lookup().
int forwards_next_root | ( | struct iter_forwards * | fwd, |
uint16_t * | qclass | ||
) |
Find next root item in forwards lookup tree.
fwd | the forward storage |
qclass | class to look at next, or higher. |
References iter_forward_zone::dclass, dname_is_root(), forwards_next_root(), rbnode_type::key, iter_forward_zone::name, iter_forward_zone::namelabs, iter_forward_zone::namelen, iter_forward_zone::node, rbtree_find_less_equal(), rbtree_first(), rbtree_next(), RBTREE_NULL, and iter_forwards::tree.
Referenced by forwards_next_root(), and iter_get_next_root().
size_t forwards_get_mem | ( | struct iter_forwards * | fwd | ) |
Get memory in use by forward storage.
fwd | forward storage. |
References delegpt_get_mem(), iter_forward_zone::dp, iter_forward_zone::namelen, RBTREE_FOR, and iter_forwards::tree.
int forwards_add_zone | ( | struct iter_forwards * | fwd, |
uint16_t | c, | ||
struct delegpt * | dp | ||
) |
Add zone to forward structure.
For external use since it recalcs the tree parents.
fwd | the forward data structure |
c | class of zone |
dp | delegation point with name and target nameservers for new forward zone. malloced. |
Referenced by do_forward().
void forwards_delete_zone | ( | struct iter_forwards * | fwd, |
uint16_t | c, | ||
uint8_t * | nm | ||
) |
Remove zone from forward structure.
For external use since it recalcs the tree parents.
fwd | the forward data structure |
c | class of zone |
nm | name of zone (in uncompressed wireformat). |
Referenced by do_forward().
int forwards_add_stub_hole | ( | struct iter_forwards * | fwd, |
uint16_t | c, | ||
uint8_t * | nm | ||
) |
Add stub hole (empty entry in forward table, that makes resolution skip a forward-zone because the stub zone should override the forward zone).
Does not add one if not necessary.
fwd | the forward data structure |
c | class of zone |
nm | name of zone (in uncompressed wireformat). |
References fwd_add_stub_hole(), and fwd_init_parents().
void forwards_delete_stub_hole | ( | struct iter_forwards * | fwd, |
uint16_t | c, | ||
uint8_t * | nm | ||
) |
Remove stub hole, if one exists.
fwd | the forward data structure |
c | class of zone |
nm | name of zone (in uncompressed wireformat). |