You've already forked ddns-updater
45 lines
856 B
Go
45 lines
856 B
Go
package public_resolvers
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import (
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"context"
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"fmt"
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"io"
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"net"
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"net/http"
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)
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type Doer interface {
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Do(*http.Request) (*http.Response, error)
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}
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type baseResolver struct {
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client Doer
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url string
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}
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func (i baseResolver) ResolvePublicIp(ctx context.Context) (net.IP, error) {
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, i.url, nil)
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if err != nil {
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return net.IP{}, fmt.Errorf("error creating ifconfig request: %w", err)
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}
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resp, err := i.client.Do(req)
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if err != nil {
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return net.IP{}, err
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}
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defer func() {
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_ = resp.Body.Close()
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}()
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if resp.StatusCode != http.StatusOK {
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return net.IP{}, fmt.Errorf("unexpected response code %d", resp.StatusCode)
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}
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ipText, err := io.ReadAll(resp.Body)
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if err != nil {
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return net.IP{}, fmt.Errorf("error reading body: %w", err)
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}
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return net.ParseIP(string(ipText)), nil
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}
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