67 lines
1.5 KiB
Go
67 lines
1.5 KiB
Go
package matching
|
|
|
|
import (
|
|
"strings"
|
|
|
|
"github.com/nbutton23/zxcvbn-go/entropy"
|
|
"github.com/nbutton23/zxcvbn-go/match"
|
|
)
|
|
|
|
const REPEAT_MATCHER_NAME = "REPEAT"
|
|
|
|
func FilterRepeatMatcher(m match.Matcher) bool {
|
|
return m.ID == REPEAT_MATCHER_NAME
|
|
}
|
|
|
|
func repeatMatch(password string) []match.Match {
|
|
var matches []match.Match
|
|
|
|
//Loop through password. if current == prev currentStreak++ else if currentStreak > 2 {buildMatch; currentStreak = 1} prev = current
|
|
var current, prev string
|
|
currentStreak := 1
|
|
var i int
|
|
var char rune
|
|
for i, char = range password {
|
|
current = string(char)
|
|
if i == 0 {
|
|
prev = current
|
|
continue
|
|
}
|
|
|
|
if strings.ToLower(current) == strings.ToLower(prev) {
|
|
currentStreak++
|
|
|
|
} else if currentStreak > 2 {
|
|
iPos := i - currentStreak
|
|
jPos := i - 1
|
|
matchRepeat := match.Match{
|
|
Pattern: "repeat",
|
|
I: iPos,
|
|
J: jPos,
|
|
Token: password[iPos : jPos+1],
|
|
DictionaryName: prev}
|
|
matchRepeat.Entropy = entropy.RepeatEntropy(matchRepeat)
|
|
matches = append(matches, matchRepeat)
|
|
currentStreak = 1
|
|
} else {
|
|
currentStreak = 1
|
|
}
|
|
|
|
prev = current
|
|
}
|
|
|
|
if currentStreak > 2 {
|
|
iPos := i - currentStreak + 1
|
|
jPos := i
|
|
matchRepeat := match.Match{
|
|
Pattern: "repeat",
|
|
I: iPos,
|
|
J: jPos,
|
|
Token: password[iPos : jPos+1],
|
|
DictionaryName: prev}
|
|
matchRepeat.Entropy = entropy.RepeatEntropy(matchRepeat)
|
|
matches = append(matches, matchRepeat)
|
|
}
|
|
return matches
|
|
}
|