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8c0f6142a8
This makes sure that we don't become vulnerable to CVE-2018-17419 or CVE-2019-19794 in the future. Signed-off-by: Sam Whited <sam@samwhited.com>
52 lines
1.3 KiB
Go
52 lines
1.3 KiB
Go
package dns
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// StringToType is the reverse of TypeToString, needed for string parsing.
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var StringToType = reverseInt16(TypeToString)
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// StringToClass is the reverse of ClassToString, needed for string parsing.
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var StringToClass = reverseInt16(ClassToString)
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// StringToOpcode is a map of opcodes to strings.
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var StringToOpcode = reverseInt(OpcodeToString)
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// StringToRcode is a map of rcodes to strings.
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var StringToRcode = reverseInt(RcodeToString)
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func init() {
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// Preserve previous NOTIMP typo, see github.com/miekg/dns/issues/733.
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StringToRcode["NOTIMPL"] = RcodeNotImplemented
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}
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// StringToAlgorithm is the reverse of AlgorithmToString.
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var StringToAlgorithm = reverseInt8(AlgorithmToString)
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// StringToHash is a map of names to hash IDs.
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var StringToHash = reverseInt8(HashToString)
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// StringToCertType is the reverseof CertTypeToString.
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var StringToCertType = reverseInt16(CertTypeToString)
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// Reverse a map
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func reverseInt8(m map[uint8]string) map[string]uint8 {
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n := make(map[string]uint8, len(m))
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for u, s := range m {
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n[s] = u
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}
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return n
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}
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func reverseInt16(m map[uint16]string) map[string]uint16 {
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n := make(map[string]uint16, len(m))
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for u, s := range m {
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n[s] = u
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}
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return n
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}
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func reverseInt(m map[int]string) map[string]int {
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n := make(map[string]int, len(m))
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for u, s := range m {
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n[s] = u
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}
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return n
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}
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