FM / dns

/usr/include/bind9/dns

Name	Size	Mode	Actions
acl.h	6477	0644	edit dl rm
adb.h	22267	0644	edit dl rm
badcache.h	3387	0644	edit dl rm
bit.h	798	0644	edit dl rm
byaddr.h	3598	0644	edit dl rm
cache.h	8730	0644	edit dl rm
callbacks.h	2280	0644	edit dl rm
catz.h	11881	0644	edit dl rm
cert.h	1465	0644	edit dl rm
client.h	14527	0644	edit dl rm
clientinfo.h	2015	0644	edit dl rm
compress.h	7047	0644	edit dl rm
db.h	50446	0644	edit dl rm
dbiterator.h	7385	0644	edit dl rm
dbtable.h	3167	0644	edit dl rm
diff.h	7039	0644	edit dl rm
dispatch.h	15538	0644	edit dl rm
dlz.h	10876	0644	edit dl rm
dlz_dlopen.h	4394	0644	edit dl rm
dns64.h	5720	0644	edit dl rm
dnsrps.h	2572	0644	edit dl rm
dnssec.h	12841	0644	edit dl rm
dnstap.h	10193	0644	edit dl rm
ds.h	1665	0644	edit dl rm
dsdigest.h	1713	0644	edit dl rm
dyndb.h	4869	0644	edit dl rm
ecdb.h	806	0644	edit dl rm
ecs.h	1250	0644	edit dl rm
edns.h	783	0644	edit dl rm
enumclass.h	1220	0644	edit dl rm
enumtype.h	8485	0644	edit dl rm
events.h	4451	0644	edit dl rm
fixedname.h	1652	0644	edit dl rm
forward.h	3060	0644	edit dl rm
geoip.h	2340	0644	edit dl rm
ipkeylist.h	2219	0644	edit dl rm
iptable.h	1521	0644	edit dl rm
journal.h	9712	0644	edit dl rm
kasp.h	12124	0644	edit dl rm
keydata.h	1047	0644	edit dl rm
keyflags.h	1277	0644	edit dl rm
keymgr.h	4107	0644	edit dl rm
keytable.h	7871	0644	edit dl rm
keyvalues.h	4083	0644	edit dl rm
lib.h	993	0644	edit dl rm
librpz.h	31401	0644	edit dl rm
lmdb.h	779	0644	edit dl rm
log.h	4029	0644	edit dl rm
lookup.h	2921	0644	edit dl rm
master.h	8786	0644	edit dl rm
masterdump.h	10133	0644	edit dl rm
message.h	39567	0644	edit dl rm
name.h	37781	0644	edit dl rm
ncache.h	4960	0644	edit dl rm
nsec.h	3065	0644	edit dl rm
nsec3.h	8258	0644	edit dl rm
nta.h	4846	0644	edit dl rm
opcode.h	1006	0644	edit dl rm
order.h	2010	0644	edit dl rm
peer.h	6475	0644	edit dl rm
portlist.h	2101	0644	edit dl rm
private.h	1962	0644	edit dl rm
rbt.h	37484	0644	edit dl rm
rcode.h	2472	0644	edit dl rm
rdata.h	22564	0644	edit dl rm
rdataclass.h	2248	0644	edit dl rm
rdatalist.h	2557	0644	edit dl rm
rdataset.h	18714	0644	edit dl rm
rdatasetiter.h	3912	0644	edit dl rm
rdataslab.h	4267	0644	edit dl rm
rdatastruct.h	62703	0644	edit dl rm
rdatatype.h	2290	0644	edit dl rm
request.h	9187	0644	edit dl rm
resolver.h	20152	0644	edit dl rm
result.h	9196	0644	edit dl rm
rootns.h	891	0644	edit dl rm
rpz.h	12156	0644	edit dl rm
rriterator.h	4214	0644	edit dl rm
rrl.h	6959	0644	edit dl rm
sdb.h	7350	0644	edit dl rm
sdlz.h	14090	0644	edit dl rm
secalg.h	1705	0644	edit dl rm
secproto.h	1556	0644	edit dl rm
soa.h	2179	0644	edit dl rm
ssu.h	7182	0644	edit dl rm
stats.h	24689	0644	edit dl rm
tcpmsg.h	3128	0644	edit dl rm
time.h	1693	0644	edit dl rm
timer.h	1050	0644	edit dl rm
tkey.h	7655	0644	edit dl rm
tsec.h	2946	0644	edit dl rm
tsig.h	8497	0644	edit dl rm
ttl.h	1876	0644	edit dl rm
types.h	14584	0644	edit dl rm
update.h	2004	0644	edit dl rm
validator.h	6679	0644	edit dl rm
version.h	679	0644	edit dl rm
view.h	35341	0644	edit dl rm
xfrin.h	2314	0644	edit dl rm
zone.h	65543	0644	edit dl rm
zonekey.h	776	0644	edit dl rm
zoneverify.h	1393	0644	edit dl rm
zt.h	5241	0644	edit dl rm

Edit: /usr/include/bind9/dns/acl.h (6477B)

/*
 * 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>

#include <dns/geoip.h>
#include <dns/iptable.h>
#include <dns/name.h>
#include <dns/types.h>

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

typedef enum {
	dns_aclelementtype_ipprefix,
	dns_aclelementtype_keyname,
	dns_aclelementtype_nestedacl,
	dns_aclelementtype_localhost,
	dns_aclelementtype_localnets,
#if defined(HAVE_GEOIP2)
	dns_aclelementtype_geoip,
#endif /* 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_GEOIP2)
	dns_geoip_elem_t geoip_elem;
#endif /* 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_GEOIP2)
	dns_geoip_databases_t *geoip;
#endif /* HAVE_GEOIP2 */
};

#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.
 */

bool
dns_acl_allowed(isc_netaddr_t *addr, const dns_name_t *signer, dns_acl_t *acl,
		dns_aclenv_t *aclenv);
/*%<
 * Return #true iff the 'addr', 'signer', or ECS values are
 * permitted by 'acl' in environment 'aclenv'.
 */

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);
/*%<
 * 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',
 * against 'acl'.  'reqsigner' may be NULL.
 *
 * 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);
/*%<
 * 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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