53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
package meshname
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import (
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"encoding/json"
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"errors"
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"fmt"
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"io/ioutil"
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"net"
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"github.com/miekg/dns"
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)
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func GenConf(target, zone string) (string, error) {
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ip := net.ParseIP(target)
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if ip == nil {
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return "", errors.New("Invalid IP address")
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}
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subDomain := DomainFromIP(&ip)
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selfRecord := fmt.Sprintf("\t\t\"%s.%s AAAA %s\"\n", subDomain, zone, target)
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confString := fmt.Sprintf("{\n\t\"%s\":[\n%s\t]\n}", subDomain, selfRecord)
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return confString, nil
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}
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// Load dnsRecords from a JSON file
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func ParseConfigFile(configPath string) (map[string][]dns.RR, error) {
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conf, err := ioutil.ReadFile(configPath)
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if err != nil {
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return nil, err
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}
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var dat map[string][]string
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if err := json.Unmarshal(conf, &dat); err == nil {
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return ParseDNSRecordsMap(dat)
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} else {
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return nil, err
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}
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}
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// ParseDNSRecordsMap takes a string map and returns a resource record map
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func ParseDNSRecordsMap(dnsRecordsMap map[string][]string) (map[string][]dns.RR, error) {
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var dnsRecords = make(map[string][]dns.RR)
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for subDomain, records := range dnsRecordsMap {
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for _, r := range records {
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if rr, err := dns.NewRR(r); err == nil {
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dnsRecords[subDomain] = append(dnsRecords[subDomain], rr)
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} else {
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return nil, err
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}
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}
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}
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return dnsRecords, nil
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}
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