authelia/internal/utils/strings.go
Amir Zarrinkafsh 7c6a86882f
[MISC] Catch OpenLDAP ppolicy error (#1508)
* [MISC] Catch OpenLDAP ppolicy error

Further to the discussion over at #361, this change now ensures that OpenLDAP password complexity errors are caught and appropriately handled.

This change also includes the PasswordComplexity test suite in the LDAP integration suite. This is because a ppolicy has been setup and enforced.

* Remove password history for integration tests

* Adjust max failures due to regulation trigger

* Fix error handling for password resets

* Refactor and include code suggestions
2020-12-16 12:30:03 +11:00

123 lines
2.8 KiB
Go

package utils
import (
"crypto/tls"
"math/rand"
"strings"
"time"
"unicode"
)
// IsStringAlphaNumeric returns false if any rune in the string is not alpha-numeric.
func IsStringAlphaNumeric(input string) bool {
for _, r := range input {
if !unicode.IsLetter(r) && !unicode.IsNumber(r) {
return false
}
}
return true
}
// IsStringInSlice checks if a single string is in an array of strings.
func IsStringInSlice(a string, list []string) (inSlice bool) {
for _, b := range list {
if b == a {
return true
}
}
return false
}
// IsStringInSliceContains checks if a single string is in an array of strings.
func IsStringInSliceContains(a string, list []string) (inSlice bool) {
for _, b := range list {
if strings.Contains(a, b) {
return true
}
}
return false
}
// SliceString splits a string s into an array with each item being a max of int d
// d = denominator, n = numerator, q = quotient, r = remainder.
func SliceString(s string, d int) (array []string) {
n := len(s)
q := n / d
r := n % d
for i := 0; i < q; i++ {
array = append(array, s[i*d:i*d+d])
if i+1 == q && r != 0 {
array = append(array, s[i*d+d:])
}
}
return
}
// IsStringSlicesDifferent checks two slices of strings and on the first occurrence of a string item not existing in the
// other slice returns true, otherwise returns false.
func IsStringSlicesDifferent(a, b []string) (different bool) {
for _, s := range a {
if !IsStringInSlice(s, b) {
return true
}
}
for _, s := range b {
if !IsStringInSlice(s, a) {
return true
}
}
return false
}
// StringSlicesDelta takes a before and after []string and compares them returning a added and removed []string.
func StringSlicesDelta(before, after []string) (added, removed []string) {
for _, s := range before {
if !IsStringInSlice(s, after) {
removed = append(removed, s)
}
}
for _, s := range after {
if !IsStringInSlice(s, before) {
added = append(added, s)
}
}
return added, removed
}
// RandomString generate a random string of n characters.
func RandomString(n int, characters []rune) (randomString string) {
rand.Seed(time.Now().UnixNano())
b := make([]rune, n)
for i := range b {
b[i] = characters[rand.Intn(len(characters))] //nolint:gosec // Likely isn't necessary to use the more expensive crypto/rand for this utility func.
}
return string(b)
}
// TLSStringToTLSConfigVersion returns a go crypto/tls version for a tls.Config based on string input.
func TLSStringToTLSConfigVersion(input string) (version uint16, err error) {
switch strings.ToUpper(input) {
case "TLS1.3", TLS13:
return tls.VersionTLS13, nil
case "TLS1.2", TLS12:
return tls.VersionTLS12, nil
case "TLS1.1", TLS11:
return tls.VersionTLS11, nil
case "TLS1.0", TLS10:
return tls.VersionTLS10, nil
}
return 0, ErrTLSVersionNotSupported
}