util

Documentation

Index

• Constants
• Variables
• func ByteSliceToString(bs []byte) string
• func ClearDirectory(inputdir string)
• func DomainList(domain string) []string
• func GetAnswerValues(response *dns.Msg) []string
• func GetFileAsArray(inputfile string) ([]string, error)
• func GetFirstIPResponse(response *dns.Msg) string
• func GetRecordValue(record interface{}) string
• func IsEmptyResponse(response *dns.Msg) bool
• func IsRecordEmpty(record interface{}) bool
• func LineCount(inputfile string) (uint, error)
• func LookupNetBIOSName(address string) (string, error)
• func ParseDuration(input string) (time.Duration, error)
• func ReverseDomainTree(domain string) string
• func ReverseLookupDomain(ip *net.IP) string
• func ReverseLookupDomainString(ipString string) string
• func SaferBytes(input string) []byte
• func StartsWithAny(value string, any []string) bool
• func StringIn(value string, in []string) bool
• func SubDomain(domain string) string
• func TrimComments(line string, commentPrefixes ...string) string

Constants

const (
	Hours = 1
	Day   = 24
	Week  = 24 * 7
)

Variables

var DefaultCommentPrefixes = []string{
	"#",
	"//",
}

takes a line and removes commented section

var Json = jsoniter.Config{
	EscapeHTML:                    false,
	MarshalFloatWith6Digits:       true,
	ObjectFieldMustBeSimpleString: true,
	SortMapKeys:                   false,
	ValidateJsonRawMessage:        true,
	DisallowUnknownFields:         false,
}.Froze()

write all metrics out to encoder

Functions

func ByteSliceToString

func ByteSliceToString(bs []byte) string

from: https://github.com/golang/go/issues/25484

func ClearDirectory

func ClearDirectory(inputdir string)

clears the contents of a directory but leaves it

func DomainList

func DomainList(domain string) []string

based on a domain name ("sub.google.com") returns a slice of domains that should be matched EXACTLY against ["sub.google.com", "google.com", "com"]

func GetAnswerValues

func GetAnswerValues(response *dns.Msg) []string

func GetFileAsArray

func GetFileAsArray(inputfile string) ([]string, error)

func GetFirstIPResponse

func GetFirstIPResponse(response *dns.Msg) string

get the first A record response value

func GetRecordValue

func GetRecordValue(record interface{}) string

based on the string value for a RR

func IsEmptyResponse

func IsEmptyResponse(response *dns.Msg) bool

returns true if the response is "empty" nil response empty response (no answers or other sections) answers with no content

func IsRecordEmpty

func IsRecordEmpty(record interface{}) bool

func LineCount

func LineCount(inputfile string) (uint, error)

count file lines from: https://stackoverflow.com/a/24563853

func LookupNetBIOSName

func LookupNetBIOSName(address string) (string, error)

this is an experimental feature pulled from: https://github.com/jpillora/icmpscan i made some changes to make it a little more readable and, more importantly, to set the outbound dns flags to 0 so this would work

func ParseDuration

func ParseDuration(input string) (time.Duration, error)

func ReverseDomainTree

func ReverseDomainTree(domain string) string

take a domain like "sub.main.top.tld" and transform to "tld.top.main.sub"

func ReverseLookupDomain

func ReverseLookupDomain(ip *net.IP) string

returns the reverse lookup arpa domain for the given IP

func ReverseLookupDomainString

func ReverseLookupDomainString(ipString string) string

func SaferBytes

func SaferBytes(input string) []byte

func StartsWithAny

func StartsWithAny(value string, any []string) bool

func StringIn

func StringIn(value string, in []string) bool

determines if the given string is in the array of strings

func SubDomain

func SubDomain(domain string) string

finds the subdomain of a requested domain, so "www.google.com" returns "google.com" and "google.com" returns "google.com"

func TrimComments

func TrimComments(line string, commentPrefixes ...string) string