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790. [bug] Wildcards created using dynamic update or IXFR

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could fail to match. [RT #1111]
This commit is contained in:
Andreas Gustafsson
2001-03-27 00:06:34 +00:00
parent 34613b2e39
commit b52a5b0630
2 changed files with 48 additions and 25 deletions
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3
CHANGES
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@@ -1,4 +1,7 @@
790. [bug] Wildcards created using dynamic update or IXFR
could fail to match. [RT #1111]
789. [bug] The "localhost" and "localnets" ACLs did not match
when used as the second element of a two-element
sortlist item.

70
lib/dns/rbtdb.c
View File

@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: rbtdb.c,v 1.151 2001/03/08 03:31:29 tale Exp $ */
/* $Id: rbtdb.c,v 1.152 2001/03/27 00:06:34 gson Exp $ */
/*
* Principal Author: Bob Halley
@@ -1019,6 +1019,40 @@ closeversion(dns_db_t *db, dns_dbversion_t **versionp, isc_boolean_t commit) {
*versionp = NULL;
}
/*
* Add the necessary magic for the wildcard name 'name'
* to be found in 'rbtdb'.
*
* In order for wildcard matching to work correctly in
* zone_find(), we must ensure that a node for the wildcarding
* level exists in the database, and has its 'find_callback'
* and 'wild' bits set.
*
* E.g. if the wildcard name is "*.sub.example." then we
* must ensure that "sub.example." exists and is marked as
* a wildcard level.
*/
static isc_result_t
add_wildcard_magic(dns_rbtdb_t *rbtdb, dns_name_t *name) {
isc_result_t result;
dns_name_t foundname;
dns_offsets_t offsets;
unsigned int n;
dns_rbtnode_t *node = NULL;
dns_name_init(&foundname, offsets);
n = dns_name_countlabels(name);
INSIST(n >= 2);
n--;
dns_name_getlabelsequence(name, 1, n, &foundname);
result = dns_rbt_addnode(rbtdb->tree, &foundname, &node);
if (result != ISC_R_SUCCESS && result != ISC_R_EXISTS)
return (result);
node->find_callback = 1;
node->wild = 1;
return (ISC_R_SUCCESS);
}
static isc_result_t
findnode(dns_db_t *db, dns_name_t *name, isc_boolean_t create,
dns_dbnode_t **nodep)
@@ -1059,6 +1093,13 @@ findnode(dns_db_t *db, dns_name_t *name, isc_boolean_t create,
node->locknum = dns_name_hash(&nodename, ISC_TRUE) %
rbtdb->node_lock_count;
#endif
if (dns_name_iswildcard(name)) {
result = add_wildcard_magic(rbtdb, name);
if (result != ISC_R_SUCCESS) {
RWUNLOCK(&rbtdb->tree_lock, locktype);
return (result);
}
}
} else if (result != ISC_R_EXISTS) {
RWUNLOCK(&rbtdb->tree_lock, locktype);
return (result);
@@ -3806,9 +3847,6 @@ loading_addrdataset(void *arg, dns_name_t *name, dns_rdataset_t *rdataset) {
isc_result_t result;
isc_region_t region;
rdatasetheader_t *newheader;
dns_name_t foundname;
dns_offsets_t offsets;
unsigned int n;
/*
* This routine does no node locking. See comments in
@@ -3830,28 +3868,9 @@ loading_addrdataset(void *arg, dns_name_t *name, dns_rdataset_t *rdataset) {
*/
if (rdataset->type == dns_rdatatype_ns)
return (DNS_R_INVALIDNS);
/*
* In order for wildcard matching to work correctly in
* zone_find(), we must ensure that a node for the wildcarding
* level exists in the database, and has its 'find_callback'
* and 'wild' bits set.
*
* E.g. if the wildcard name is "*.sub.example." then we
* must ensure that "sub.example." exists and is marked as
* a wildcard level.
*/
dns_name_init(&foundname, offsets);
n = dns_name_countlabels(name);
INSIST(n >= 2);
n--;
dns_name_getlabelsequence(name, 1, n, &foundname);
node = NULL;
result = dns_rbt_addnode(rbtdb->tree, &foundname, &node);
if (result != ISC_R_SUCCESS && result != ISC_R_EXISTS)
result = add_wildcard_magic(rbtdb, name);
if (result != ISC_R_SUCCESS)
return (result);
node->find_callback = 1;
node->wild = 1;
}
node = NULL;
@@ -3859,6 +3878,7 @@ loading_addrdataset(void *arg, dns_name_t *name, dns_rdataset_t *rdataset) {
if (result != ISC_R_SUCCESS && result != ISC_R_EXISTS)
return (result);
if (result != ISC_R_EXISTS) {
dns_name_t foundname;
dns_name_init(&foundname, NULL);
dns_rbt_namefromnode(node, &foundname);
#ifdef DNS_RBT_USEHASH