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ensure updating ip job works only with ipv4

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This commit is contained in:
Viktor Barzin 2023-09-18 14:14:30 +00:00
parent 9b5ed514cd
commit 4a55d98f8c
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GPG key ID: 4056458DBDBF8863
1 changed files with 19 additions and 5 deletions
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24
cli/main.go
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@ -165,6 +165,15 @@ func run() error {
if len(publicDNSIps) < 1 {
return fmt.Errorf("no ips found for %s", *dynDnsDomain)
}
var publicDNSIp net.IP = nil
for _, ip := range publicDNSIps {
if ip.To4() != nil {
publicDNSIp = ip
}
}
if publicDNSIp == nil {
return errors.Wrapf(err, "failed to resolve IPv4 address for dyndns")
}
// Resolve the dynamic dns record
dynamicDNSIps, err := net.LookupIP(*dynDnsDomain)
@ -174,14 +183,19 @@ func run() error {
if len(dynamicDNSIps) < 1 {
return fmt.Errorf("no ips found for %s", *dynDnsDomain)
}
var dynamicDNSIp net.IP
for _, ip := range dynamicDNSIps {
if ip.To4() != nil {
dynamicDNSIp = ip
}
}
currIP, newIP := publicDNSIps[0], dynamicDNSIps[0]
if currIP.Equal(newIP) {
glog.Infof("IPs of dyndns and current ip match, nothing to do: current=%s, dyndns=%s", currIP, newIP)
if publicDNSIp.Equal(dynamicDNSIp) {
glog.Infof("IPs of dyndns and current ip match, nothing to do: current=%s, dyndns=%s", publicDNSIp, dynamicDNSIp)
return nil
}
// Send notification as glue records can't be modified programatically for godaddy :/
err = notifyForIPChange(currIP, newIP)
err = notifyForIPChange(publicDNSIp, dynamicDNSIp)
if err != nil {
return errors.Wrapf(err, "failed to notify for ip change. this must succeed otherwise the glue records won't be updated")
}
@ -194,7 +208,7 @@ func run() error {
if err != nil {
return errors.Wrapf(err, "failed to get worktree")
}
err = updatePublicIP(gitFs, currIP, newIP)
err = updatePublicIP(gitFs, publicDNSIp, dynamicDNSIp)
if err != nil {
return fmt.Errorf("failed to update public ip: %w", err)
}