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cmd/cli: make widcard rules match case-insensitively

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Domain name comparisons are done in case-insensitive manner.

See: https://datatracker.ietf.org/doc/html/rfc1034#section-3.1
This commit is contained in:
Cuong Manh Le
2024-11-11 15:29:51 +07:00
committed by Cuong Manh Le
parent 47a90ec2a1
commit c654398981
2 changed files with 4 additions and 2 deletions
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cmd/cli/dns_proxy.go
+3 -2
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@@ -630,14 +630,15 @@ func canonicalName(fqdn string) string {
return q
}
// wildcardMatches reports whether string str matches the wildcard pattern.
// wildcardMatches reports whether string str matches the wildcard pattern in case-insensitive manner.
func wildcardMatches(wildcard, str string) bool {
// Wildcard match.
wildCardParts := strings.Split(wildcard, "*")
wildCardParts := strings.Split(strings.ToLower(wildcard), "*")
if len(wildCardParts) != 2 {
return false
}
str = strings.ToLower(str)
switch {
case len(wildCardParts[0]) > 0 && len(wildCardParts[1]) > 0:
// Domain must match both prefix and suffix.