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validation: allow up to 200 chars of txt content

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This commit is contained in:
InsanePrawn 2025-02-23 19:18:50 +01:00
parent b7a0a8a7bc
commit 2702bfbd89
2 changed files with 4 additions and 2 deletions
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2
util.go
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@ -59,7 +59,7 @@ func prepareConfig(conf DNSConfig) (DNSConfig, error) {
func sanitizeString(s string) string { func sanitizeString(s string) string {
// URL safe base64 alphabet without padding as defined in ACME // URL safe base64 alphabet without padding as defined in ACME
re, _ := regexp.Compile(`[^A-Za-z\-\_0-9]+`) re, _ := regexp.Compile(`[^A-Za-z\-\_\.0-9]+`)
return re.ReplaceAllString(s, "") return re.ReplaceAllString(s, "")
} }

4
validation.go
View File

@ -33,7 +33,9 @@ func validSubdomain(s string) bool {
func validTXT(s string) bool { func validTXT(s string) bool {
sn := sanitizeString(s) sn := sanitizeString(s)
if utf8.RuneCountInString(s) == 43 && utf8.RuneCountInString(sn) == 43 { cnt := utf8.RuneCountInString(s)
cnt_sn := utf8.RuneCountInString(sn)
if (43 <= cnt && cnt <= 200 && cnt_sn == cnt) {
// 43 chars is the current LE auth key size, but not limited / defined by ACME // 43 chars is the current LE auth key size, but not limited / defined by ACME
return true return true
} }