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25 lines
555 B
Go
25 lines
555 B
Go
package wireguard
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import (
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"fmt"
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"net"
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)
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// GetIP returns the IPv4 address of the wg0 interface.
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func GetIP() (string, error) {
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iface, err := net.InterfaceByName("wg0")
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if err != nil {
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return "", fmt.Errorf("wg0 interface not found: %w", err)
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}
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addrs, err := iface.Addrs()
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if err != nil {
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return "", fmt.Errorf("failed to get wg0 addresses: %w", err)
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}
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for _, addr := range addrs {
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if ipnet, ok := addr.(*net.IPNet); ok && ipnet.IP.To4() != nil {
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return ipnet.IP.String(), nil
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}
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}
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return "", fmt.Errorf("no IPv4 address on wg0")
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}
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