iter_priv.c File Reference

This file contains functions to assist the iterator module. More...

#include "config.h"
#include "iterator/iter_priv.h"
#include "util/regional.h"
#include "util/log.h"
#include "util/config_file.h"
#include "util/data/dname.h"
#include "util/data/msgparse.h"
#include "util/net_help.h"
#include "util/storage/dnstree.h"

Functions

struct iter_privpriv_create ()
 Create priv structure.
void priv_delete (struct iter_priv *priv)
 Delete priv structure.
static int read_addrs (struct iter_priv *priv, struct config_file *cfg)
 Read private-addr declarations from config.
static int read_names (struct iter_priv *priv, struct config_file *cfg)
 Read private-domain declarations from config.
int priv_apply_cfg (struct iter_priv *priv, struct config_file *cfg)
 Process priv config.
static int priv_lookup_addr (struct iter_priv *priv, struct sockaddr_storage *addr, socklen_t addrlen)
 See if an address is blocked.
static int priv_lookup_name (struct iter_priv *priv, ldns_buffer *pkt, uint8_t *name, size_t name_len, uint16_t dclass)
 See if a name is whitelisted.
size_t priv_get_mem (struct iter_priv *priv)
 Get memory used by priv structure.
int priv_rrset_bad (struct iter_priv *priv, ldns_buffer *pkt, struct rrset_parse *rrset)
 See if rrset is bad.


Detailed Description

This file contains functions to assist the iterator module.

Keep track of the private addresses and lookup fast.


Function Documentation

struct iter_priv* priv_create (  )  [read]

Create priv structure.

Returns:
new structure or NULL on error.

References iter_priv::a, addr_tree_init(), iter_priv::n, name_tree_init(), priv_delete(), iter_priv::region, and regional_create().

Referenced by iter_apply_cfg().

void priv_delete ( struct iter_priv priv  ) 

Delete priv structure.

Parameters:
priv,: to delete.

References iter_priv::region, and regional_destroy().

Referenced by iter_deinit(), and priv_create().

int priv_apply_cfg ( struct iter_priv priv,
struct config_file cfg 
)

Process priv config.

Parameters:
priv,: where to store.
cfg,: config options.
Returns:
0 on error.

References iter_priv::a, addr_tree_init(), addr_tree_init_parents(), iter_priv::n, name_tree_init(), name_tree_init_parents(), read_addrs(), read_names(), iter_priv::region, and regional_free_all().

Referenced by iter_apply_cfg().

static int priv_lookup_addr ( struct iter_priv priv,
struct sockaddr_storage *  addr,
socklen_t  addrlen 
) [static]

See if an address is blocked.

Parameters:
priv,: structure for address storage.
addr,: address to check
addrlen,: length of addr.
Returns:
: true if the address must not be queried. false if unlisted.

References iter_priv::a, and addr_tree_lookup().

Referenced by priv_rrset_bad().

static int priv_lookup_name ( struct iter_priv priv,
ldns_buffer *  pkt,
uint8_t *  name,
size_t  name_len,
uint16_t  dclass 
) [static]

See if a name is whitelisted.

Parameters:
priv,: structure for address storage.
pkt,: the packet (for compression ptrs).
name,: name to check.
name_len,: uncompressed length of the name to check.
dclass,: class to check.
Returns:
: true if the name is OK. false if unlisted.

References dname_count_size_labels(), dname_pkt_copy(), name_tree_node::labs, name_tree_node::len, log_assert, iter_priv::n, and name_tree_lookup().

Referenced by priv_rrset_bad().

size_t priv_get_mem ( struct iter_priv priv  ) 

Get memory used by priv structure.

Parameters:
priv,: structure for address storage.
Returns:
bytes in use.

References iter_priv::region, and regional_get_mem().

int priv_rrset_bad ( struct iter_priv priv,
ldns_buffer *  pkt,
struct rrset_parse rrset 
)

See if rrset is bad.

Parameters:
priv,: structure for private address storage.
pkt,: packet to decompress rrset name in.
rrset,: the rrset to examine, A or AAAA.
Returns:
true if the rrset is bad and should be removed.

References iter_priv::a, rbtree_t::count, rrset_parse::dname, rrset_parse::dname_len, INET6_SIZE, INET_SIZE, name_tree_node::len, rr_parse::next, priv_lookup_addr(), priv_lookup_name(), rrset_parse::rr_first, rrset_parse::rrset_class, rr_parse::ttl_data, and rrset_parse::type.

Referenced by scrub_sanitize().


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