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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
*/
package wgcfg
import (
"regexp"
"strings"
)
var reservedNames = []string{
"CON", "PRN", "AUX", "NUL",
"COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9",
"LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9",
}
const specialChars = "/\\<>:\"|?*\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x00"
var allowedNameFormat *regexp.Regexp
func init() {
allowedNameFormat = regexp.MustCompile("^[a-zA-Z0-9_=+.-]{1,32}$")
}
func isReserved(name string) bool {
if len(name) == 0 {
return false
}
for _, reserved := range reservedNames {
if strings.EqualFold(name, reserved) {
return true
}
}
return false
}
func hasSpecialChars(name string) bool {
return strings.ContainsAny(name, specialChars)
}
func TunnelNameIsValid(name string) bool {
// Aside from our own restrictions, let's impose the Windows restrictions first
if isReserved(name) || hasSpecialChars(name) {
return false
}
return allowedNameFormat.MatchString(name)
}
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