FM / dns

/usr/include/bind9/dns

Name	Size	Mode	Actions
acache.h	14232	0644	edit dl rm
acl.h	7242	0644	edit dl rm
adb.h	22595	0644	edit dl rm
badcache.h	3369	0644	edit dl rm
bit.h	807	0644	edit dl rm
byaddr.h	4002	0644	edit dl rm
cache.h	8643	0644	edit dl rm
callbacks.h	2271	0644	edit dl rm
catz.h	11833	0644	edit dl rm
cert.h	1466	0644	edit dl rm
client.h	22042	0644	edit dl rm
clientinfo.h	2006	0644	edit dl rm
compress.h	6646	0644	edit dl rm
db.h	47061	0644	edit dl rm
dbiterator.h	7422	0644	edit dl rm
dbtable.h	3165	0644	edit dl rm
diff.h	6980	0644	edit dl rm
dispatch.h	16427	0644	edit dl rm
dlz.h	10618	0644	edit dl rm
dlz_dlopen.h	4677	0644	edit dl rm
dns64.h	5635	0644	edit dl rm
dnssec.h	12371	0644	edit dl rm
dnstap.h	9364	0644	edit dl rm
ds.h	1225	0644	edit dl rm
dsdigest.h	1722	0644	edit dl rm
dyndb.h	4835	0644	edit dl rm
ecdb.h	809	0644	edit dl rm
edns.h	722	0644	edit dl rm
enumclass.h	1220	0644	edit dl rm
enumtype.h	8300	0644	edit dl rm
events.h	4059	0644	edit dl rm
fixedname.h	1663	0644	edit dl rm
forward.h	3452	0644	edit dl rm
geoip.h	2792	0644	edit dl rm
ipkeylist.h	2186	0644	edit dl rm
iptable.h	1621	0644	edit dl rm
journal.h	8227	0644	edit dl rm
keydata.h	1059	0644	edit dl rm
keyflags.h	1278	0644	edit dl rm
keytable.h	9462	0644	edit dl rm
keyvalues.h	4159	0644	edit dl rm
lib.h	1192	0644	edit dl rm
log.h	3964	0644	edit dl rm
lookup.h	2924	0644	edit dl rm
master.h	11289	0644	edit dl rm
masterdump.h	12647	0644	edit dl rm
message.h	39023	0644	edit dl rm
name.h	37115	0644	edit dl rm
ncache.h	4929	0644	edit dl rm
nsec.h	3397	0644	edit dl rm
nsec3.h	8032	0644	edit dl rm
nta.h	4548	0644	edit dl rm
opcode.h	1007	0644	edit dl rm
order.h	1999	0644	edit dl rm
peer.h	5966	0644	edit dl rm
portlist.h	2101	0644	edit dl rm
private.h	1935	0644	edit dl rm
rbt.h	40618	0644	edit dl rm
rcode.h	2481	0644	edit dl rm
rdata.h	21613	0644	edit dl rm
rdataclass.h	2257	0644	edit dl rm
rdatalist.h	2569	0644	edit dl rm
rdataset.h	21536	0644	edit dl rm
rdatasetiter.h	3926	0644	edit dl rm
rdataslab.h	4528	0644	edit dl rm
rdatastruct.h	61584	0644	edit dl rm
rdatatype.h	2298	0644	edit dl rm
request.h	11156	0644	edit dl rm
resolver.h	20227	0644	edit dl rm
result.h	9284	0644	edit dl rm
rootns.h	892	0644	edit dl rm
rpz.h	10335	0644	edit dl rm
rriterator.h	4230	0644	edit dl rm
rrl.h	6640	0644	edit dl rm
sdb.h	7224	0644	edit dl rm
sdlz.h	14214	0644	edit dl rm
secalg.h	1706	0644	edit dl rm
secproto.h	1557	0644	edit dl rm
soa.h	2186	0644	edit dl rm
ssu.h	8308	0644	edit dl rm
stats.h	13451	0644	edit dl rm
tcpmsg.h	3145	0644	edit dl rm
time.h	1695	0644	edit dl rm
timer.h	1051	0644	edit dl rm
tkey.h	7631	0644	edit dl rm
tsec.h	2949	0644	edit dl rm
tsig.h	8384	0644	edit dl rm
ttl.h	1945	0644	edit dl rm
types.h	14212	0644	edit dl rm
update.h	1653	0644	edit dl rm
validator.h	7161	0644	edit dl rm
version.h	868	0644	edit dl rm
view.h	35274	0644	edit dl rm
xfrin.h	2924	0644	edit dl rm
zone.h	60864	0644	edit dl rm
zonekey.h	777	0644	edit dl rm
zt.h	5562	0644	edit dl rm

Edit: /usr/include/bind9/dns/acl.h (7242B)

/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

#ifndef DNS_ACL_H
#define DNS_ACL_H 1

/*****
 ***** Module Info
 *****/

/*! \file dns/acl.h
 * \brief
 * Address match list handling.
 */

/***
 *** Imports
 ***/

#include <stdbool.h>

#include <isc/lang.h>
#include <isc/magic.h>
#include <isc/netaddr.h>
#include <isc/refcount.h>

#if defined(HAVE_GEOIP) || defined(HAVE_GEOIP2)
#include <dns/geoip.h>
#endif
#include <dns/name.h>
#include <dns/types.h>
#include <dns/iptable.h>

/***
 *** Types
 ***/

typedef enum {
	dns_aclelementtype_ipprefix,
	dns_aclelementtype_keyname,
	dns_aclelementtype_nestedacl,
	dns_aclelementtype_localhost,
	dns_aclelementtype_localnets,
#if defined(HAVE_GEOIP) || defined(HAVE_GEOIP2)
	dns_aclelementtype_geoip,
#endif /* HAVE_GEOIP || HAVE_GEOIP2 */
	dns_aclelementtype_any
} dns_aclelementtype_t;

typedef struct dns_aclipprefix dns_aclipprefix_t;

struct dns_aclipprefix {
	isc_netaddr_t address; /* IP4/IP6 */
	unsigned int prefixlen;
};

struct dns_aclelement {
	dns_aclelementtype_t	type;
	bool		negative;
	dns_name_t		keyname;
#if defined(HAVE_GEOIP) || defined(HAVE_GEOIP2)
	dns_geoip_elem_t	geoip_elem;
#endif /* HAVE_GEOIP || HAVE_GEOIP2 */
	dns_acl_t		*nestedacl;
	int			node_num;
};

#define dns_acl_node_count(acl) acl->iptable->radix->num_added_node

struct dns_acl {
	unsigned int		magic;
	isc_mem_t		*mctx;
	isc_refcount_t		refcount;
	dns_iptable_t		*iptable;
	dns_aclelement_t	*elements;
	bool			has_negatives;
	unsigned int		alloc;		/*%< Elements allocated */
	unsigned int		length;		/*%< Elements initialized */
	char			*name;		/*%< Temporary use only */
	ISC_LINK(dns_acl_t)	nextincache;	/*%< Ditto */
};

struct dns_aclenv {
	dns_acl_t *localhost;
	dns_acl_t *localnets;
	bool match_mapped;
#if defined(HAVE_GEOIP) || defined(HAVE_GEOIP2)
	dns_geoip_databases_t *geoip;
	bool geoip_use_ecs;
#endif
};

#define DNS_ACL_MAGIC		ISC_MAGIC('D','a','c','l')
#define DNS_ACL_VALID(a)	ISC_MAGIC_VALID(a, DNS_ACL_MAGIC)

/***
 *** Functions
 ***/

ISC_LANG_BEGINDECLS

isc_result_t
dns_acl_create(isc_mem_t *mctx, int n, dns_acl_t **target);
/*%<
 * Create a new ACL, including an IP table and an array with room
 * for 'n' ACL elements.  The elements are uninitialized and the
 * length is 0.
 */

isc_result_t
dns_acl_any(isc_mem_t *mctx, dns_acl_t **target);
/*%<
 * Create a new ACL that matches everything.
 */

isc_result_t
dns_acl_none(isc_mem_t *mctx, dns_acl_t **target);
/*%<
 * Create a new ACL that matches nothing.
 */

bool
dns_acl_isany(dns_acl_t *acl);
/*%<
 * Test whether ACL is set to "{ any; }"
 */

bool
dns_acl_isnone(dns_acl_t *acl);
/*%<
 * Test whether ACL is set to "{ none; }"
 */

isc_result_t
dns_acl_merge(dns_acl_t *dest, dns_acl_t *source, bool pos);
/*%<
 * Merge the contents of one ACL into another.  Call dns_iptable_merge()
 * for the IP tables, then concatenate the element arrays.
 *
 * If pos is set to false, then the nested ACL is to be negated.  This
 * means reverse the sense of each *positive* element or IP table node,
 * but leave negatives alone, so as to prevent a double-negative causing
 * an unexpected positive match in the parent ACL.
 */

void
dns_acl_attach(dns_acl_t *source, dns_acl_t **target);
/*%<
 * Attach to acl 'source'.
 *
 * Requires:
 *\li	'source' to be a valid acl.
 *\li	'target' to be non NULL and '*target' to be NULL.
 */

void
dns_acl_detach(dns_acl_t **aclp);
/*%<
 * Detach the acl. On final detach the acl must not be linked on any
 * list.
 *
 * Requires:
 *\li	'*aclp' to be a valid acl.
 *
 * Insists:
 *\li	'*aclp' is not linked on final detach.
 */

bool
dns_acl_isinsecure(const dns_acl_t *a);
/*%<
 * Return #true iff the acl 'a' is considered insecure, that is,
 * if it contains IP addresses other than those of the local host.
 * This is intended for applications such as printing warning
 * messages for suspect ACLs; it is not intended for making access
 * control decisions.  We make no guarantee that an ACL for which
 * this function returns #false is safe.
 */

isc_result_t
dns_aclenv_init(isc_mem_t *mctx, dns_aclenv_t *env);
/*%<
 * Initialize ACL environment, setting up localhost and localnets ACLs
 */

void
dns_aclenv_copy(dns_aclenv_t *t, dns_aclenv_t *s);

void
dns_aclenv_destroy(dns_aclenv_t *env);

isc_result_t
dns_acl_match(const isc_netaddr_t *reqaddr,
	      const dns_name_t *reqsigner,
	      const dns_acl_t *acl,
	      const dns_aclenv_t *env,
	      int *match,
	      const dns_aclelement_t **matchelt);

isc_result_t
dns_acl_match2(const isc_netaddr_t *reqaddr,
	       const dns_name_t *reqsigner,
	       const isc_netaddr_t *ecs,
	       uint8_t ecslen,
	       uint8_t *scope,
	       const dns_acl_t *acl,
	       const dns_aclenv_t *env,
	       int *match,
	       const dns_aclelement_t **matchelt);
/*%<
 * General, low-level ACL matching.  This is expected to
 * be useful even for weird stuff like the topology and sortlist statements.
 *
 * Match the address 'reqaddr', and optionally the key name 'reqsigner',
 * and optionally the client prefix 'ecs' of length 'ecslen'
 * (reported via EDNS client subnet option) against 'acl'.
 *
 * 'reqsigner' and 'ecs' may be NULL.  If an ACL matches against 'ecs'
 * and 'ecslen', then 'scope' will be set to indicate the netmask that
 * matched.
 *
 * If there is a match, '*match' will be set to an integer whose absolute
 * value corresponds to the order in which the matching value was inserted
 * into the ACL.  For a positive match, this value will be positive; for a
 * negative match, it will be negative.
 *
 * If there is no match, *match will be set to zero.
 *
 * If there is a match in the element list (either positive or negative)
 * and 'matchelt' is non-NULL, *matchelt will be pointed to the matching
 * element.
 *
 * 'env' points to the current ACL environment, including the
 * current values of localhost and localnets and (if applicable)
 * the GeoIP context.
 *
 * Returns:
 *\li	#ISC_R_SUCCESS		Always succeeds.
 */

bool
dns_aclelement_match(const isc_netaddr_t *reqaddr,
		     const dns_name_t *reqsigner,
		     const dns_aclelement_t *e,
		     const dns_aclenv_t *env,
		     const dns_aclelement_t **matchelt);

bool
dns_aclelement_match2(const isc_netaddr_t *reqaddr,
		      const dns_name_t *reqsigner,
		      const isc_netaddr_t *ecs,
		      uint8_t ecslen,
		      uint8_t *scope,
		      const dns_aclelement_t *e,
		      const dns_aclenv_t *env,
		      const dns_aclelement_t **matchelt);
/*%<
 * Like dns_acl_match, but matches against the single ACL element 'e'
 * rather than a complete ACL, and returns true iff it matched.
 *
 * To determine whether the match was positive or negative, the
 * caller should examine e->negative.  Since the element 'e' may be
 * a reference to a named ACL or a nested ACL, a matching element
 * returned through 'matchelt' is not necessarily 'e' itself.
 */

ISC_LANG_ENDDECLS

#endif /* DNS_ACL_H */

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