unbound
0.1
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This file contains functions to assist the iterator module. More...
#include "config.h"
#include <ldns/rdata.h>
#include <ldns/dname.h>
#include <ldns/rr.h>
#include "iterator/iter_fwd.h"
#include "iterator/iter_delegpt.h"
#include "util/log.h"
#include "util/config_file.h"
#include "util/net_help.h"
#include "util/data/dname.h"
Functions | |
int | fwd_cmp (const void *k1, const void *k2) |
compare two fwd entries | |
struct iter_forwards * | forwards_create (void) |
Create forwards. | |
static void | fwd_zone_free (struct iter_forward_zone *n) |
static void | delfwdnode (rbnode_t *n, void *ATTR_UNUSED(arg)) |
static void | fwd_del_tree (struct iter_forwards *fwd) |
void | forwards_delete (struct iter_forwards *fwd) |
Delete forwards. | |
static int | forwards_insert_data (struct iter_forwards *fwd, uint16_t c, uint8_t *nm, size_t nmlen, int nmlabs, struct delegpt *dp) |
insert info into forward structure | |
static int | forwards_insert (struct iter_forwards *fwd, uint16_t c, struct delegpt *dp) |
insert new info into forward structure given dp | |
static void | fwd_init_parents (struct iter_forwards *fwd) |
initialise parent pointers in the tree | |
static struct delegpt * | read_fwds_name (struct config_stub *s) |
set zone name | |
static int | read_fwds_host (struct config_stub *s, struct delegpt *dp) |
set fwd host names | |
static int | read_fwds_addr (struct config_stub *s, struct delegpt *dp) |
set fwd server addresses | |
static int | read_forwards (struct iter_forwards *fwd, struct config_file *cfg) |
read forwards config | |
static int | need_hole_insert (rbtree_t *tree, struct iter_forward_zone *zone) |
see if zone needs to have a hole inserted | |
static int | fwd_add_stub_hole (struct iter_forwards *fwd, uint16_t c, uint8_t *nm) |
insert a stub hole (if necessary) for stub name | |
static int | make_stub_holes (struct iter_forwards *fwd, struct config_file *cfg) |
make NULL entries for stubs | |
int | forwards_apply_cfg (struct iter_forwards *fwd, struct config_file *cfg) |
Process forwards config. | |
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. | |
struct delegpt * | forwards_lookup_root (struct iter_forwards *fwd, uint16_t qclass) |
Same as forwards_lookup, but for the root only. | |
int | forwards_next_root (struct iter_forwards *fwd, uint16_t *dclass) |
Find next root item in forwards lookup tree. | |
size_t | forwards_get_mem (struct iter_forwards *fwd) |
Get memory in use by forward storage. | |
static struct iter_forward_zone * | fwd_zone_find (struct iter_forwards *fwd, uint16_t c, uint8_t *nm) |
int | forwards_add_zone (struct iter_forwards *fwd, uint16_t c, struct delegpt *dp) |
Add zone to forward structure. | |
void | forwards_delete_zone (struct iter_forwards *fwd, uint16_t c, uint8_t *nm) |
Remove zone from forward structure. | |
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). | |
void | forwards_delete_stub_hole (struct iter_forwards *fwd, uint16_t c, uint8_t *nm) |
Remove stub hole, if one exists. |
This file contains functions to assist the iterator module.
Keep track of forward zones and config settings.
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Create forwards.
Referenced by check_fwd(), libworker_setup(), and worker_init().
void forwards_delete | ( | struct iter_forwards * | fwd | ) |
Delete forwards.
fwd,: | to delete. |
Referenced by check_fwd(), libworker_delete(), 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. |
References fwd_cmp(), fwd_init_parents(), make_stub_holes(), rbtree_create(), read_forwards(), and iter_forwards::tree.
Referenced by check_fwd(), libworker_setup(), and worker_init().
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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_t::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(), and print_root_fwds().
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Same as forwards_lookup, but for the root only.
fwd,: | forward storage. |
qclass,: | The qclass of the query. |
References forwards_lookup().
Referenced by processInitRequest().
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_t::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.
Referenced by worker_mem_report().
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. |
References forwards_insert(), fwd_init_parents(), delegpt::name, iter_forward_zone::node, rbtree_delete(), and iter_forwards::tree.
Referenced by do_forward(), and do_forward_add().
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). |
References fwd_init_parents(), iter_forward_zone::node, rbtree_delete(), and iter_forwards::tree.
Referenced by do_forward(), and do_forward_remove().
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().
Referenced by do_stub_add().
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). |
References iter_forward_zone::dp, fwd_init_parents(), iter_forward_zone::node, rbtree_delete(), and iter_forwards::tree.
Referenced by do_stub_add(), and do_stub_remove().