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fuzz.go

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//go:build fuzz

// +build fuzz

package dns

import "strings"

func Fuzz(data []byte) int {

msg := new(Msg)

if err := msg.Unpack(data); err != nil {

return 0

}

if _, err := msg.Pack(); err != nil {

return 0

}

return 1

}

func FuzzNewRR(data []byte) int {

str := string(data)

// Do not fuzz lines that include the $INCLUDE keyword and hint the fuzzer

// at avoiding them.

// See GH#1025 for context.

if strings.Contains(strings.ToUpper(str), "$INCLUDE") {

return -1

}

if _, err := NewRR(str); err != nil {

return 0

}

return 1

}