github/kubernetes
1
0
Fork 0
mirror of https://github.com/k3s-io/kubernetes.git synced 2025-09-11 06:02:18 +00:00
Code Issues Projects Releases Wiki Activity

Loosen DNS 952 for labels

Browse Source
This commit is contained in:
Tim Hockin
2014-11-20 14:27:11 +08:00
parent c857dc1196
commit 89875ef09d
9 changed files with 109 additions and 76 deletions
Download Patch File Download Diff File Expand all files Collapse all files

66
pkg/util/validation.go
View File

@@ -20,28 +20,52 @@ import (
"regexp"
)
const dnsLabelFmt string = "[a-z0-9]([-a-z0-9]*[a-z0-9])?"
var dnsLabelRegexp = regexp.MustCompile("^" + dnsLabelFmt + "$")
const dnsLabelMaxLength int = 63
// IsDNSLabel tests for a string that conforms to the definition of a label in
// DNS (RFC 1035/1123).
// DNS (RFC 1123).
func IsDNSLabel(value string) bool {
return len(value) <= dnsLabelMaxLength && dnsLabelRegexp.MatchString(value)
return IsDNS1123Label(value)
}
const dnsSubdomainFmt string = dnsLabelFmt + "(\\." + dnsLabelFmt + ")*"
var dnsSubdomainRegexp = regexp.MustCompile("^" + dnsSubdomainFmt + "$")
const dnsSubdomainMaxLength int = 253
// IsDNSSubdomain tests for a string that conforms to the definition of a
// subdomain in DNS (RFC 1035/1123).
// subdomain in DNS (RFC 1123).
func IsDNSSubdomain(value string) bool {
return len(value) <= dnsSubdomainMaxLength && dnsSubdomainRegexp.MatchString(value)
return IsDNS1123Subdomain(value)
}
const dns1123LabelFmt string = "[a-z0-9]([-a-z0-9]*[a-z0-9])?"
var dns1123LabelRegexp = regexp.MustCompile("^" + dns1123LabelFmt + "$")
const dns1123LabelMaxLength int = 63
// IsDNS1123Label tests for a string that conforms to the definition of a label in
// DNS (RFC 1123).
func IsDNS1123Label(value string) bool {
return len(value) <= dns1123LabelMaxLength && dns1123LabelRegexp.MatchString(value)
}
const dns1123SubdomainFmt string = dns1123LabelFmt + "(\\." + dns1123LabelFmt + ")*"
var dns1123SubdomainRegexp = regexp.MustCompile("^" + dns1123SubdomainFmt + "$")
const dns1123SubdomainMaxLength int = 253
// IsDNS1123Subdomain tests for a string that conforms to the definition of a
// subdomain in DNS (RFC 1123).
func IsDNS1123Subdomain(value string) bool {
return len(value) <= dns1123SubdomainMaxLength && dns1123SubdomainRegexp.MatchString(value)
}
const dns952LabelFmt string = "[a-z]([-a-z0-9]*[a-z0-9])?"
var dns952LabelRegexp = regexp.MustCompile("^" + dns952LabelFmt + "$")
const dns952LabelMaxLength int = 24
// IsDNS952Label tests for a string that conforms to the definition of a label in
// DNS (RFC 952).
func IsDNS952Label(value string) bool {
return len(value) <= dns952LabelMaxLength && dns952LabelRegexp.MatchString(value)
}
const cIdentifierFmt string = "[A-Za-z_][A-Za-z0-9_]*"
@@ -58,13 +82,3 @@ func IsCIdentifier(value string) bool {
func IsValidPortNum(port int) bool {
return 0 < port && port < 65536
}
const dns952IdentifierFmt string = "[a-z]([-a-z0-9]*[a-z0-9])?"
var dns952Regexp = regexp.MustCompile("^" + dns952IdentifierFmt + "$")
const dns952MaxLength = 24
func IsDNS952Label(value string) bool {
return len(value) <= dns952MaxLength && dns952Regexp.MatchString(value)
}