81 lines
1.6 KiB
Go
81 lines
1.6 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package net
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import (
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"net"
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"sort"
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"strings"
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)
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// IPNet maps string to net.IPNet.
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type IPNet map[string]*net.IPNet
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// IP maps string to net.IP.
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type IP map[string]net.IP
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// ParseIPNets parses string slice to IPNet.
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func ParseIPNets(specs ...string) (IPNet, IP, error) {
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ipnetset := make(IPNet)
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ipset := make(IP)
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for _, spec := range specs {
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spec = strings.TrimSpace(spec)
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_, ipnet, err := net.ParseCIDR(spec)
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if err != nil {
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ip := net.ParseIP(spec)
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if ip == nil {
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return nil, nil, err
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}
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i := ip.String()
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ipset[i] = ip
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continue
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}
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k := ipnet.String()
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ipnetset[k] = ipnet
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}
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return ipnetset, ipset, nil
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}
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// ParseCIDRs parses comma separated CIDRs into a sorted string array
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func ParseCIDRs(s string) ([]string, error) {
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if s == "" {
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return []string{}, nil
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}
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values := strings.Split(s, ",")
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ipnets, ips, err := ParseIPNets(values...)
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if err != nil {
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return nil, err
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}
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cidrs := []string{}
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for k := range ipnets {
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cidrs = append(cidrs, k)
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}
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for k := range ips {
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cidrs = append(cidrs, k)
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}
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sort.Strings(cidrs)
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return cidrs, nil
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}
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