forgejo/vendor/github.com/miekg/dns/duplicate.go
techknowlogick d2ea21d0d8
Use caddy's certmagic library for extensible/robust ACME handling (#14177)
* use certmagic for more extensible/robust ACME cert handling

* accept TOS based on config option

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: Lauris BH <lauris@nix.lv>
2021-01-25 01:37:35 +02:00

37 lines
953 B
Go
Vendored

package dns
//go:generate go run duplicate_generate.go
// IsDuplicate checks of r1 and r2 are duplicates of each other, excluding the TTL.
// So this means the header data is equal *and* the RDATA is the same. Returns true
// if so, otherwise false. It's a protocol violation to have identical RRs in a message.
func IsDuplicate(r1, r2 RR) bool {
// Check whether the record header is identical.
if !r1.Header().isDuplicate(r2.Header()) {
return false
}
// Check whether the RDATA is identical.
return r1.isDuplicate(r2)
}
func (r1 *RR_Header) isDuplicate(_r2 RR) bool {
r2, ok := _r2.(*RR_Header)
if !ok {
return false
}
if r1.Class != r2.Class {
return false
}
if r1.Rrtype != r2.Rrtype {
return false
}
if !isDuplicateName(r1.Name, r2.Name) {
return false
}
// ignore TTL
return true
}
// isDuplicateName checks if the domain names s1 and s2 are equal.
func isDuplicateName(s1, s2 string) bool { return equal(s1, s2) }