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moby--moby/vendor/github.com/miekg/dns/reverse.go
Sam Whited 021258661b Update libnetwork and DNS library
This makes sure that we don't become vulnerable to CVE-2018-17419 or
CVE-2019-19794 in the future. While we are not currently vulnerable to
either, there is a risk that a PR could be made which uses one of the
vulnerable methods in the future, so it's worth going ahead and updating
to ensure that a simple PR that would easily pass code review doesn't
lead to a vulnerability.

Signed-off-by: Sam Whited <sam@samwhited.com>
2020-03-27 09:53:11 -04:00

52 lines
1.3 KiB
Go

package dns
// StringToType is the reverse of TypeToString, needed for string parsing.
var StringToType = reverseInt16(TypeToString)
// StringToClass is the reverse of ClassToString, needed for string parsing.
var StringToClass = reverseInt16(ClassToString)
// StringToOpcode is a map of opcodes to strings.
var StringToOpcode = reverseInt(OpcodeToString)
// StringToRcode is a map of rcodes to strings.
var StringToRcode = reverseInt(RcodeToString)
func init() {
// Preserve previous NOTIMP typo, see github.com/miekg/dns/issues/733.
StringToRcode["NOTIMPL"] = RcodeNotImplemented
}
// StringToAlgorithm is the reverse of AlgorithmToString.
var StringToAlgorithm = reverseInt8(AlgorithmToString)
// StringToHash is a map of names to hash IDs.
var StringToHash = reverseInt8(HashToString)
// StringToCertType is the reverseof CertTypeToString.
var StringToCertType = reverseInt16(CertTypeToString)
// Reverse a map
func reverseInt8(m map[uint8]string) map[string]uint8 {
n := make(map[string]uint8, len(m))
for u, s := range m {
n[s] = u
}
return n
}
func reverseInt16(m map[uint16]string) map[string]uint16 {
n := make(map[string]uint16, len(m))
for u, s := range m {
n[s] = u
}
return n
}
func reverseInt(m map[int]string) map[string]int {
n := make(map[string]int, len(m))
for u, s := range m {
n[s] = u
}
return n
}