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ClassANY: don't convert CLASS255 to ANY (#618) 

* ClassANY: don't convert CLASS255 to ANY

Class "ANY" is wireformat only. In zonefile you can use CLASS255, but
when String-ing we convert this into "ANY" which is wrong. I.e. this
means we can't read back our own update.

Bit of a kludge to work around this, as I'm not sure we can just remove
ANY from the ClassToString map.
This commit is contained in:
Miek Gieben 2018-01-07 17:57:04 +00:00 committed by GitHub
parent ac8cd7878c
commit dcdbddd810
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 12 additions and 7 deletions
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7
defaults.go
View File

@ -273,8 +273,11 @@ func (t Type) String() string {
// String returns the string representation for the class c.
func (c Class) String() string {
if c1, ok := ClassToString[uint16(c)]; ok {
return c1
if s, ok := ClassToString[uint16(c)]; ok {
// Only emit mnemonics when they are unambiguous, specically ANY is in both.
if _, ok := StringToType[s]; !ok {
return s
}
}
return "CLASS" + strconv.Itoa(int(c))
}

1
parse_test.go
View File

@ -433,6 +433,7 @@ func TestParseClass(t *testing.T) {
// ClassANY can not occur in zone files
// "t.example.com. ANY A 127.0.0.1": "t.example.com. 3600 ANY A 127.0.0.1",
"t.example.com. NONE A 127.0.0.1": "t.example.com. 3600 NONE A 127.0.0.1",
"t.example.com. CLASS255 A 127.0.0.1": "t.example.com. 3600 CLASS255 A 127.0.0.1",
}
for i, o := range tests {
rr, err := NewRR(i)

3
scan.go
View File

@ -577,6 +577,7 @@ func zlexer(s *scan, c chan lex) {
return
}
l.value = zRrtpe
rrtype = true
l.torc = t
}
}
@ -600,7 +601,7 @@ func zlexer(s *scan, c chan lex) {
c <- l
}
stri = 0
// I reverse space stuff here
if !space && !commt {
l.value = zBlank
l.token = " "

8
update_test.go
View File

@ -119,15 +119,15 @@ func TestPreReqAndRemovals(t *testing.T) {
;example.org. IN SOA
;; ANSWER SECTION:
name_used. 0 ANY ANY
name_used. 0 CLASS255 ANY
name_not_used. 0 NONE ANY
rrset_used1. 0 ANY A
rrset_used1. 0 CLASS255 A
rrset_used2. 3600 IN A 127.0.0.1
rrset_not_used. 0 NONE A
;; AUTHORITY SECTION:
remove1. 0 ANY ANY
remove2. 0 ANY A
remove1. 0 CLASS255 ANY
remove2. 0 CLASS255 A
remove3. 0 NONE A 127.0.0.1
insert. 3600 IN A 127.0.0.1
`