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Some machines have multiple network interfaces with the same MAC address. Updates tailscale/corp#21371 Signed-off-by: Anton Tolchanov <anton@tailscale.com>
27 lines
572 B
Go
27 lines
572 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package posture
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import (
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"net/netip"
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"slices"
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"tailscale.com/net/netmon"
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)
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// GetHardwareAddrs returns the hardware addresses of all non-loopback
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// network interfaces.
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func GetHardwareAddrs() (hwaddrs []string, err error) {
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err = netmon.ForeachInterface(func(i netmon.Interface, _ []netip.Prefix) {
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if i.IsLoopback() {
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return
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}
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if a := i.HardwareAddr.String(); a != "" {
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hwaddrs = append(hwaddrs, a)
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}
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})
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slices.Sort(hwaddrs)
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return slices.Compact(hwaddrs), err
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}
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