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domainrange.go
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domainrange.go
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/*
* Copyright 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
*
*/
package utils
import "strings"
// NormalizeDomainRange normalizes domain to lower case, drops wildcard and suffix dot.
func NormalizeDomainRange(domainRange string) string {
normalized := strings.ToLower(domainRange)
if strings.HasPrefix(normalized, "*.") {
normalized = normalized[1:]
}
if strings.HasSuffix(normalized, ".") {
normalized = normalized[0 : len(normalized)-1]
}
return normalized
}
// IsInDomainRanges returns true if domain is in domain ranges.
func IsInDomainRanges(domain string, domainRanges []string) bool {
if domainRanges == nil {
return true
}
for _, domainRange := range domainRanges {
if IsInDomainRange(domain, domainRange) {
return true
}
}
return false
}
// IsInDomainRange returns true if domain is in domain range.
func IsInDomainRange(domain, domainRange string) bool {
if domainRange == "" {
return true
}
domain = strings.ToLower(domain)
if strings.HasSuffix(domain, ".") {
domain = domain[0 : len(domain)-1]
}
if !strings.HasSuffix(domain, domainRange) {
return false
}
if len(domain) == len(domainRange) {
return true
}
return domainRange[0] == '.' || domain[len(domain)-len(domainRange)-1] == '.'
}