Fix bug where any non-empty hostname would not be updated
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parent
0400c2f406
commit
c1746de8eb
2 changed files with 45 additions and 3 deletions
15
api/api.go
15
api/api.go
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@ -80,7 +80,20 @@ func (api API) performRequest(method, url string, body io.Reader) (response []by
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// Create a DNS record for a given domain. The name
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// field in DNSRecord is in the format [hostname].[domainname]
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func (api API) CreateDNSRecord(domain string, record DNSRecord) error {
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b, err := json.Marshal(record)
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// We need to transform name -> hostname for JSON.
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var body struct {
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Hostname string `json:"hostname"`
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Type string `json:"type"`
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Content string `json:"content"`
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Ttl string `json:"ttl"`
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}
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body.Hostname = record.Name
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body.Type = record.Type
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body.Content = record.Content
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body.Ttl = record.Ttl
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b, err := json.Marshal(body)
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if err != nil {
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return err
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}
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@ -3,14 +3,29 @@
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package dyndns
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import (
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"fmt"
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"github.com/mfycheng/name-dyndns/api"
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"github.com/mfycheng/name-dyndns/log"
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"strings"
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"sync"
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"time"
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)
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var wg sync.WaitGroup
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func contains(c api.Config, val string) bool {
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if val == c.Domain {
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return true
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}
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for _, v := range c.Hostnames {
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if fmt.Sprintf("%s.%s", v, c.Domain) == val {
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return true
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}
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}
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return false
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}
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func updateDNSRecord(a api.API, domain, recordId string, newRecord api.DNSRecord) error {
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log.Logger.Printf("Deleting DNS record for %s.\n", newRecord.Name)
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err := a.DeleteDNSRecord(domain, newRecord.RecordId)
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@ -19,6 +34,16 @@ func updateDNSRecord(a api.API, domain, recordId string, newRecord api.DNSRecord
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}
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log.Logger.Printf("Creating DNS record for %s: %s\n", newRecord.Name, newRecord)
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// Remove the domain from the DNSRecord name.
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// This is an unfortunate inconsistency from the API
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// implementation (returns full name, but only requires host)
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if newRecord.Name == domain {
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newRecord.Name = ""
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} else {
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newRecord.Name = strings.TrimSuffix(newRecord.Name, fmt.Sprintf(".%s", domain))
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}
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return a.CreateDNSRecord(domain, newRecord)
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}
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@ -27,7 +52,6 @@ func runConfig(c api.Config, daemon bool) {
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a := api.NewAPIFromConfig(c)
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for {
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log.Logger.Printf("Running update check for %s.", c.Domain)
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ip, err := GetExternalIP()
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if err != nil {
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log.Logger.Print("Failed to retreive IP: ")
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@ -59,13 +83,18 @@ func runConfig(c api.Config, daemon bool) {
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}
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for _, r := range records {
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if !contains(c, r.Name) {
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continue
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}
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log.Logger.Printf("Running update check for %s.", r.Name)
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if r.Content != ip {
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r.Content = ip
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err = updateDNSRecord(a, c.Domain, r.RecordId, r)
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if err != nil {
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log.Logger.Printf("Failed to update record %s [%s] with IP: %s\n\t%s\n", r.RecordId, r.Name, ip, err)
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} else {
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log.Logger.Printf("Attempting to update record %s [%s] with IP: %s\n", r.RecordId, r.Name, ip)
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log.Logger.Printf("Updated record %s [%s] with IP: %s\n", r.RecordId, r.Name, ip)
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}
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}
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}
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