authelia/internal/utils/strings.go
James Elliott 29a900226d
[FEATURE] Enhance LDAP/SMTP TLS Configuration and Unify Them (#1557)
* add new directive in the global scope `certificates_directory` which is used to bulk load certs and trust them in Authelia
* this is in ADDITION to system certs and are trusted by both LDAP and SMTP
* added a shared TLSConfig struct to be used by both SMTP and LDAP, and anything else in the future that requires tuning the TLS
* remove usage of deprecated LDAP funcs Dial and DialTLS in favor of DialURL which is also easier to use
* use the server name from LDAP URL or SMTP host when validating the certificate unless otherwise defined in the TLS section
* added temporary translations from the old names to the new ones for all deprecated options
* added docs
* updated example configuration
* final deprecations to be done in 4.28.0
* doc updates
* fix misc linting issues
* uniform deprecation notices for ease of final removal
* added additional tests covering previously uncovered areas and the new configuration options
* add non-fatal to certificate loading when system certs could not be loaded
* adjust timeout of Suite ShortTimeouts
* add warnings pusher for the StructValidator
* make the schema suites uninform
* utilize the warnings in the StructValidator
* fix test suite usage for skip_verify
* extract LDAP filter parsing into it's own function to make it possible to test
* test LDAP filter parsing
* update ErrorContainer interface
* add tests to the StructValidator
* add NewTLSConfig test
* move baseDN for users/groups into parsed values
* add tests to cover many of the outstanding areas in LDAP
* add explicit deferred LDAP conn close to UpdatePassword
* add some basic testing to SMTP notifier
* suggestions from code review
2021-01-04 21:28:55 +11:00

106 lines
2.3 KiB
Go

package utils
import (
"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)
}