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bfc7e16d84
Closes #2828. Squashed commit of the following: commit 26c6cf81c32469e1c4955aafb40490c29b4d1a99 Author: Ainar Garipov <A.Garipov@AdGuard.COM> Date: Tue Mar 30 17:43:53 2021 +0300 dhcpd: do not assume mac addrs of 6 bytes
24 lines
523 B
Go
24 lines
523 B
Go
package aghnet
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import (
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"fmt"
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"net"
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"github.com/AdguardTeam/AdGuardHome/internal/agherr"
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)
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// ValidateHardwareAddress returns an error if hwa is not a valid EUI-48,
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// EUI-64, or 20-octet InfiniBand link-layer address.
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func ValidateHardwareAddress(hwa net.HardwareAddr) (err error) {
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defer agherr.Annotate("validating hardware address %q: %w", &err, hwa)
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switch l := len(hwa); l {
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case 0:
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return agherr.Error("address is empty")
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case 6, 8, 20:
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return nil
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default:
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return fmt.Errorf("bad len: %d", l)
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}
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}
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