diff options
Diffstat (limited to 'vendor/github.com/miekg/dns/duplicate.go')
-rw-r--r-- | vendor/github.com/miekg/dns/duplicate.go | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/vendor/github.com/miekg/dns/duplicate.go b/vendor/github.com/miekg/dns/duplicate.go new file mode 100644 index 000000000..6372e8a19 --- /dev/null +++ b/vendor/github.com/miekg/dns/duplicate.go @@ -0,0 +1,25 @@ +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. Return true +// is so, otherwise false. +// It's is a protocol violation to have identical RRs in a message. +func IsDuplicate(r1, r2 RR) bool { + if r1.Header().Class != r2.Header().Class { + return false + } + if r1.Header().Rrtype != r2.Header().Rrtype { + return false + } + if !isDulicateName(r1.Header().Name, r2.Header().Name) { + return false + } + // ignore TTL + + return isDuplicateRdata(r1, r2) +} + +// isDulicateName checks if the domain names s1 and s2 are equal. +func isDulicateName(s1, s2 string) bool { return equal(s1, s2) } |