mirror of
https://github.com/go-gitea/gitea.git
synced 2024-08-20 19:43:27 +02:00
- The current implementation of `RandomString` doesn't give you a most-possible unique randomness. It gives you 6*`length` instead of the possible 8*`length` bits(or as `length`x bytes) randomness. This is because `RandomString` is being limited to a max value of 63, this in order to represent the random byte as a letter/digit.
- The recommendation of pbkdf2 is to use 64+ bit salt, which the `RandomString` doesn't give with a length of 10, instead of increasing 10 to a higher number, this patch adds a new function called `RandomBytes` which does give you the guarentee of 8*`length` randomness and thus corresponding of `length`x bytes randomness.
- Use hexadecimal to store the bytes value in the database, as mentioned, it doesn't play nice in order to convert it to a string. This will always be a length of 32(with `length` being 16).
- When we detect on `Authenticate`(source: db) that a user has the old format of salt, re-hash the password such that the user will have it's password hashed with increased salt.
Thanks to @zeripath for working out the rouge edges from my first commit 😄.
Co-authored-by: lafriks <lauris@nix.lv>
Co-authored-by: zeripath <art27@cantab.net>
173 lines
3.9 KiB
Go
173 lines
3.9 KiB
Go
// Copyright 2017 The Gitea Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package util
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/rand"
|
|
"errors"
|
|
"math/big"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
// OptionalBool a boolean that can be "null"
|
|
type OptionalBool byte
|
|
|
|
const (
|
|
// OptionalBoolNone a "null" boolean value
|
|
OptionalBoolNone OptionalBool = iota
|
|
// OptionalBoolTrue a "true" boolean value
|
|
OptionalBoolTrue
|
|
// OptionalBoolFalse a "false" boolean value
|
|
OptionalBoolFalse
|
|
)
|
|
|
|
// IsTrue return true if equal to OptionalBoolTrue
|
|
func (o OptionalBool) IsTrue() bool {
|
|
return o == OptionalBoolTrue
|
|
}
|
|
|
|
// IsFalse return true if equal to OptionalBoolFalse
|
|
func (o OptionalBool) IsFalse() bool {
|
|
return o == OptionalBoolFalse
|
|
}
|
|
|
|
// IsNone return true if equal to OptionalBoolNone
|
|
func (o OptionalBool) IsNone() bool {
|
|
return o == OptionalBoolNone
|
|
}
|
|
|
|
// OptionalBoolOf get the corresponding OptionalBool of a bool
|
|
func OptionalBoolOf(b bool) OptionalBool {
|
|
if b {
|
|
return OptionalBoolTrue
|
|
}
|
|
return OptionalBoolFalse
|
|
}
|
|
|
|
// OptionalBoolParse get the corresponding OptionalBool of a string using strconv.ParseBool
|
|
func OptionalBoolParse(s string) OptionalBool {
|
|
b, e := strconv.ParseBool(s)
|
|
if e != nil {
|
|
return OptionalBoolNone
|
|
}
|
|
return OptionalBoolOf(b)
|
|
}
|
|
|
|
// Max max of two ints
|
|
func Max(a, b int) int {
|
|
if a < b {
|
|
return b
|
|
}
|
|
return a
|
|
}
|
|
|
|
// Min min of two ints
|
|
func Min(a, b int) int {
|
|
if a > b {
|
|
return b
|
|
}
|
|
return a
|
|
}
|
|
|
|
// IsEmptyString checks if the provided string is empty
|
|
func IsEmptyString(s string) bool {
|
|
return len(strings.TrimSpace(s)) == 0
|
|
}
|
|
|
|
// NormalizeEOL will convert Windows (CRLF) and Mac (CR) EOLs to UNIX (LF)
|
|
func NormalizeEOL(input []byte) []byte {
|
|
var right, left, pos int
|
|
if right = bytes.IndexByte(input, '\r'); right == -1 {
|
|
return input
|
|
}
|
|
length := len(input)
|
|
tmp := make([]byte, length)
|
|
|
|
// We know that left < length because otherwise right would be -1 from IndexByte.
|
|
copy(tmp[pos:pos+right], input[left:left+right])
|
|
pos += right
|
|
tmp[pos] = '\n'
|
|
left += right + 1
|
|
pos++
|
|
|
|
for left < length {
|
|
if input[left] == '\n' {
|
|
left++
|
|
}
|
|
|
|
right = bytes.IndexByte(input[left:], '\r')
|
|
if right == -1 {
|
|
copy(tmp[pos:], input[left:])
|
|
pos += length - left
|
|
break
|
|
}
|
|
copy(tmp[pos:pos+right], input[left:left+right])
|
|
pos += right
|
|
tmp[pos] = '\n'
|
|
left += right + 1
|
|
pos++
|
|
}
|
|
return tmp[:pos]
|
|
}
|
|
|
|
// MergeInto merges pairs of values into a "dict"
|
|
func MergeInto(dict map[string]interface{}, values ...interface{}) (map[string]interface{}, error) {
|
|
for i := 0; i < len(values); i++ {
|
|
switch key := values[i].(type) {
|
|
case string:
|
|
i++
|
|
if i == len(values) {
|
|
return nil, errors.New("specify the key for non array values")
|
|
}
|
|
dict[key] = values[i]
|
|
case map[string]interface{}:
|
|
m := values[i].(map[string]interface{})
|
|
for i, v := range m {
|
|
dict[i] = v
|
|
}
|
|
default:
|
|
return nil, errors.New("dict values must be maps")
|
|
}
|
|
}
|
|
|
|
return dict, nil
|
|
}
|
|
|
|
// RandomInt returns a random integer between 0 and limit, inclusive
|
|
func RandomInt(limit int64) (int64, error) {
|
|
rInt, err := rand.Int(rand.Reader, big.NewInt(limit))
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return rInt.Int64(), nil
|
|
}
|
|
|
|
const letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
|
|
|
|
// RandomString generates a random alphanumerical string
|
|
func RandomString(length int64) (string, error) {
|
|
bytes := make([]byte, length)
|
|
limit := int64(len(letters))
|
|
for i := range bytes {
|
|
num, err := RandomInt(limit)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
bytes[i] = letters[num]
|
|
}
|
|
return string(bytes), nil
|
|
}
|
|
|
|
// RandomBytes generates `length` bytes
|
|
// This differs from RandomString, as RandomString is limits each byte to have
|
|
// a maximum value of 63 instead of 255(max byte size)
|
|
func RandomBytes(length int64) ([]byte, error) {
|
|
bytes := make([]byte, length)
|
|
_, err := rand.Read(bytes)
|
|
return bytes, err
|
|
}
|