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Allow leading * in ingress hostname

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This commit is contained in:
Manuel de Brito Fontes
2016-07-19 11:10:18 -04:00
parent a898438448
commit 60f4fbf4f2
4 changed files with 151 additions and 8 deletions
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21
pkg/util/validation/validation.go
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@@ -139,6 +139,27 @@ func IsDNS1035Label(value string) []string {
return errs
}
// wildcard definition - RFC 1034 section 4.3.3.
// examples:
// - valid: *.bar.com, *.foo.bar.com
// - invalid: *.*.bar.com, *.foo.*.com, *bar.com, f*.bar.com, *
const wildcardDNF1123SubdomainFmt = "\\*\\." + dns1123SubdomainFmt
// IsWildcardDNS1123Subdomain tests for a string that conforms to the definition of a
// wildcard subdomain in DNS (RFC 1034 section 4.3.3).
func IsWildcardDNS1123Subdomain(value string) []string {
wildcardDNS1123SubdomainRegexp := regexp.MustCompile("^\\*\\." + dns1123SubdomainFmt + "$")
var errs []string
if len(value) > DNS1123SubdomainMaxLength {
errs = append(errs, MaxLenError(DNS1123SubdomainMaxLength))
}
if !wildcardDNS1123SubdomainRegexp.MatchString(value) {
errs = append(errs, RegexError(wildcardDNF1123SubdomainFmt, "*.example.com"))
}
return errs
}
const cIdentifierFmt string = "[A-Za-z_][A-Za-z0-9_]*"
var cIdentifierRegexp = regexp.MustCompile("^" + cIdentifierFmt + "$")