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Diffstat (limited to 'vendor/github.com/miekg/dns/nsecx.go')
-rw-r--r--vendor/github.com/miekg/dns/nsecx.go95
1 files changed, 0 insertions, 95 deletions
diff --git a/vendor/github.com/miekg/dns/nsecx.go b/vendor/github.com/miekg/dns/nsecx.go
deleted file mode 100644
index f8826817b..000000000
--- a/vendor/github.com/miekg/dns/nsecx.go
+++ /dev/null
@@ -1,95 +0,0 @@
-package dns
-
-import (
- "crypto/sha1"
- "encoding/hex"
- "strings"
-)
-
-// HashName hashes a string (label) according to RFC 5155. It returns the hashed string in uppercase.
-func HashName(label string, ha uint8, iter uint16, salt string) string {
- if ha != SHA1 {
- return ""
- }
-
- wireSalt := make([]byte, hex.DecodedLen(len(salt)))
- n, err := packStringHex(salt, wireSalt, 0)
- if err != nil {
- return ""
- }
- wireSalt = wireSalt[:n]
-
- name := make([]byte, 255)
- off, err := PackDomainName(strings.ToLower(label), name, 0, nil, false)
- if err != nil {
- return ""
- }
- name = name[:off]
-
- s := sha1.New()
- // k = 0
- s.Write(name)
- s.Write(wireSalt)
- nsec3 := s.Sum(nil)
-
- // k > 0
- for k := uint16(0); k < iter; k++ {
- s.Reset()
- s.Write(nsec3)
- s.Write(wireSalt)
- nsec3 = s.Sum(nsec3[:0])
- }
-
- return toBase32(nsec3)
-}
-
-// Cover returns true if a name is covered by the NSEC3 record.
-func (rr *NSEC3) Cover(name string) bool {
- nameHash := HashName(name, rr.Hash, rr.Iterations, rr.Salt)
- owner := strings.ToUpper(rr.Hdr.Name)
- labelIndices := Split(owner)
- if len(labelIndices) < 2 {
- return false
- }
- ownerHash := owner[:labelIndices[1]-1]
- ownerZone := owner[labelIndices[1]:]
- if !IsSubDomain(ownerZone, strings.ToUpper(name)) { // name is outside owner zone
- return false
- }
-
- nextHash := rr.NextDomain
-
- // if empty interval found, try cover wildcard hashes so nameHash shouldn't match with ownerHash
- if ownerHash == nextHash && nameHash != ownerHash { // empty interval
- return true
- }
- if ownerHash > nextHash { // end of zone
- if nameHash > ownerHash { // covered since there is nothing after ownerHash
- return true
- }
- return nameHash < nextHash // if nameHash is before beginning of zone it is covered
- }
- if nameHash < ownerHash { // nameHash is before ownerHash, not covered
- return false
- }
- return nameHash < nextHash // if nameHash is before nextHash is it covered (between ownerHash and nextHash)
-}
-
-// Match returns true if a name matches the NSEC3 record
-func (rr *NSEC3) Match(name string) bool {
- nameHash := HashName(name, rr.Hash, rr.Iterations, rr.Salt)
- owner := strings.ToUpper(rr.Hdr.Name)
- labelIndices := Split(owner)
- if len(labelIndices) < 2 {
- return false
- }
- ownerHash := owner[:labelIndices[1]-1]
- ownerZone := owner[labelIndices[1]:]
- if !IsSubDomain(ownerZone, strings.ToUpper(name)) { // name is outside owner zone
- return false
- }
- if ownerHash == nameHash {
- return true
- }
- return false
-}