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Added dns_name_matcheswildcard

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This commit is contained in:
Brian Wellington 2000-02-02 20:11:55 +00:00
parent 5726326ccd
commit d2b77d720f
2 changed files with 49 additions and 0 deletions
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33
lib/dns/include/dns/name.h
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@ -497,6 +497,39 @@ dns_name_issubdomain(dns_name_t *name1, dns_name_t *name2);
* FALSE 'name1' is not a subdomain of 'name2'
*/
isc_boolean_t
dns_name_matcheswildcard(dns_name_t *name, dns_name_t *wname);
/*
* Does 'name' match the wildcard specified in 'wname'?
*
* Notes:
* name matches the wildcard specified in wname if all labels
* following the wildcard in wname are identical to the same number
* of labels at the end of name.
*
* It makes no sense for one of the names to be relative and the
* other absolute. If both names are relative, then to be meaningfully
* compared the caller must ensure that they are both relative to the
* same domain.
*
* Requires:
* 'name' is a valid name
*
* dns_name_countlabels(name) > 0
*
* 'wname' is a valid name
*
* dns_name_countlabels(wname) > 0
*
* dns_name_iswildcard(wname) is true
*
* Either name is absolute and wname is absolute, or neither is.
*
* Returns:
* TRUE 'name' matches the wildcard specified in 'wname'
* FALSE 'name' does not match the wildcard specified in 'wname'
*/
/***
*** Labels

16
lib/dns/name.c
View file

@ -820,6 +820,22 @@ dns_name_issubdomain(dns_name_t *name1, dns_name_t *name2) {
return (ISC_FALSE);
}
isc_boolean_t
dns_name_matcheswildcard(dns_name_t *name, dns_name_t *wname) {
unsigned int labels;
dns_name_t tname;
REQUIRE(VALID_NAME(name));
REQUIRE(dns_name_countlabels(name) > 0);
REQUIRE(VALID_NAME(wname));
REQUIRE((labels = dns_name_countlabels(wname)) > 0);
REQUIRE(dns_name_iswildcard(wname));
dns_name_init(&tname, NULL);
dns_name_getlabelsequence(wname, 1, labels - 1, &tname);
return (dns_name_issubdomain(name, &tname));
}
unsigned int
dns_name_countlabels(dns_name_t *name) {
/*