util

Documentation

Index

• func CalcPassword(scramble, sha1pwd []byte) []byte
• func DecodePassword(pwd string) ([]byte, error)
• func EncodePassword(pwd string) string
• func RunWithRetry(retryCnt int, backoff uint64, f func() (bool, error)) (err error)
• func Sha1Hash(bs []byte) []byte

Functions

func CalcPassword

func CalcPassword(scramble, sha1pwd []byte) []byte

CalcPassword is the algorithm convert hashed password to auth string. See https://dev.mysql.com/doc/internals/en/secure-password-authentication.html SHA1( password ) XOR SHA1( "20-bytes random data from server" <concat> SHA1( SHA1( password ) ) )

func DecodePassword

func DecodePassword(pwd string) ([]byte, error)

DecodePassword converts hex string password to byte array.

func EncodePassword

func EncodePassword(pwd string) string

EncodePassword converts plaintext password to hashed hex string.

func RunWithRetry

func RunWithRetry(retryCnt int, backoff uint64, f func() (bool, error)) (err error)

RunWithRetry will run the f with backoff and retry. retryCnt: Max retry count backoff: When run f failed, it will sleep backoff * triedCount time.Millisecond. Function f should have two return value. The first one is an bool which indicate if the err if retryable. The second is if the f meet any error.

func Sha1Hash

func Sha1Hash(bs []byte) []byte

Sha1Hash is an util function to calculate sha1 hash.