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cmd/tailscale: modify empty hostname case

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Signed-Off-By: Dmytro Shynkevych <dmytro@tailscale.com>
This commit is contained in:
Dmytro Shynkevych 2020-07-15 17:22:13 -04:00 committed by Brad Fitzpatrick
parent 8163521c33
commit 65d2537c05
1 changed files with 3 additions and 2 deletions
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5
cmd/tailscale/cli/up.go
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@ -80,12 +80,13 @@ var upArgs struct {
hostname string hostname string
} }
// validateHostname checks that name is a valid non-empty domain name label // validateHostname checks that name is a valid domain name label
// pursuant to https://tools.ietf.org/html/rfc1034#section-3.1. // pursuant to https://tools.ietf.org/html/rfc1034#section-3.1.
func validateHostname(name string) error { func validateHostname(name string) error {
switch { switch {
// Empty string is treated as missing hostname and replaced downstream.
case len(name) == 0: case len(name) == 0:
return fmt.Errorf("empty") return nil
case len(name) > 63: case len(name) > 63:
return fmt.Errorf("longer than 63 characters") return fmt.Errorf("longer than 63 characters")
} }