utils

Documentation

Index

• func ASCIIBytesToPrintString(b []byte) string
• func CtIsZero(b []byte) bool
• func EnsureAddrIPPort(a string) error
• func ExplicitBzero(b []byte)
• func GetExternalIPv4Address() (net.IP, error)
• func MkDataDir(f string) error

Functions

func ASCIIBytesToPrintString

func ASCIIBytesToPrintString(b []byte) string

ASCIIBytesToPrintString converts the buffer b to the closest ASCII string equivalent, substituting '*' for unprintable characters.

func CtIsZero

func CtIsZero(b []byte) bool

CtIsZero returns true iff the buffer b is all 0x00, doing the check in constant time.

func EnsureAddrIPPort

func EnsureAddrIPPort(a string) error

EnsureAddrIPPort returns nil iff the address is a raw IP + Port combination.

func ExplicitBzero

func ExplicitBzero(b []byte)

ExplicitBzero explicitly clears out the buffer b, by filling it with 0x00 bytes.

func GetExternalIPv4Address

func GetExternalIPv4Address() (net.IP, error)

GetExternalIPv4Address attempts to guess an external IPv4 address by interface enumeration.

func MkDataDir

func MkDataDir(f string) error

MkDataDir creates a data directory of appropriate (paranoid) permissions if it does not exist, and validates that existing directories have the intended permissions if it does exist.