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util/dns: fix variable redeclaration in ValidateDNSName

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This commit is contained in:
Kristoffer Dalby 2026-01-14 12:21:45 +00:00
parent 00f22a8443
commit a6696582a4
1 changed files with 8 additions and 2 deletions
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10
hscontrol/util/dns.go
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@ -43,6 +43,7 @@ func ValidateUsername(username string) error {
}
atCount := 0
for _, char := range username {
switch {
case unicode.IsLetter(char),
@ -87,18 +88,21 @@ func ValidateHostname(name string) error {
strings.ToLower(name),
)
}
if strings.HasPrefix(name, "-") || strings.HasSuffix(name, "-") {
return fmt.Errorf(
"hostname %q cannot start or end with a hyphen",
name,
)
}
if strings.HasPrefix(name, ".") || strings.HasSuffix(name, ".") {
return fmt.Errorf(
"hostname %q cannot start or end with a dot",
name,
)
}
if invalidDNSRegex.MatchString(name) {
return fmt.Errorf(
"hostname %q contains invalid characters, only lowercase letters, numbers, hyphens and dots are allowed",
@ -120,7 +124,8 @@ func ValidateHostname(name string) error {
// After transformation, validates the result.
func NormaliseHostname(name string) (string, error) {
// Early return if already valid
if err := ValidateHostname(name); err == nil {
err := ValidateHostname(name)
if err == nil {
return name, nil
}
@ -136,7 +141,8 @@ func NormaliseHostname(name string) (string, error) {
}
// Validate result after transformation
if err := ValidateHostname(name); err != nil {
err = ValidateHostname(name)
if err != nil {
return "", fmt.Errorf(
"hostname invalid after normalisation: %w",
err,