snowflake/common/namematcher/matcher.go
Shelikhoo 38f0e00e5d
Add Domain Name Matcher
Design difference from original vision: Skipped FQDN step to make it more generalized
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/28651#note_2787394
2022-06-16 13:57:33 +01:00

26 lines
559 B
Go

package namematcher
import "strings"
func NewNameMatcher(rule string) NameMatcher {
return NameMatcher{suffix: strings.TrimPrefix(rule, "^"), exact: strings.HasPrefix(rule, "^")}
}
type NameMatcher struct {
exact bool
suffix string
}
func (m *NameMatcher) IsSupersetOf(matcher NameMatcher) bool {
if m.exact {
return matcher.exact && m.suffix == matcher.suffix
}
return strings.HasSuffix(matcher.suffix, m.suffix)
}
func (m *NameMatcher) IsMember(s string) bool {
if m.exact {
return s == m.suffix
}
return strings.HasSuffix(s, m.suffix)
}