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util/addr: check ip addrs before return
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
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parent
9a7a65f05e
commit
077063c212
@ -79,8 +79,8 @@ func Extract(addr string) (string, error) {
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}
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addrs = append(addrs, loAddrs...)
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var ipAddr []byte
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var publicIP []byte
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var ipAddr string
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var publicIP string
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for _, rawAddr := range addrs {
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var ip net.IP
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@ -94,22 +94,30 @@ func Extract(addr string) (string, error) {
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}
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if !isPrivateIP(ip.String()) {
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publicIP = ip
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publicIP = ip.String()
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continue
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}
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ipAddr = ip
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ipAddr = ip.String()
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break
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}
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// return private ip
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if ipAddr != nil {
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return net.IP(ipAddr).String(), nil
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if len(ipAddr) > 0 {
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a := net.ParseIP(ipAddr)
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if a == nil {
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return "", fmt.Errorf("ip addr %s is invalid", ipAddr)
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}
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return a.String(), nil
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}
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// return public or virtual ip
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if publicIP != nil {
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return net.IP(publicIP).String(), nil
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if len(publicIP) > 0 {
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a := net.ParseIP(publicIP)
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if a == nil {
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return "", fmt.Errorf("ip addr %s is invalid", publicIP)
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}
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return a.String(), nil
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}
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return "", fmt.Errorf("No IP address found, and explicit IP not provided")
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