josh
9bb4b09a04
CI / Lint + build + test (push) Has been cancelled
Post-repair hardware validation pipeline for Proxmox cluster hosts. Go orchestrator + in-image agent + mkosi live image + bundled dnsmasq PXE + SQLite + HTMX/SSE UI + notify registry + janitor + full docs.
58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
package orchestrator
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import (
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"encoding/hex"
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"fmt"
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"net"
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"strconv"
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"strings"
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)
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// SendWoL sends a Wake-on-LAN magic packet to broadcastIP:port for the
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// given MAC (aa:bb:cc:dd:ee:ff). The packet is 6 bytes of 0xFF followed
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// by the MAC repeated 16 times.
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func SendWoL(mac, broadcastIP string, port int) error {
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macBytes, err := parseMAC(mac)
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if err != nil {
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return err
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}
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packet := make([]byte, 6+16*6)
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for i := 0; i < 6; i++ {
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packet[i] = 0xff
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}
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for i := 0; i < 16; i++ {
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copy(packet[6+i*6:], macBytes)
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}
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conn, err := net.Dial("udp", net.JoinHostPort(broadcastIP, strconv.Itoa(port)))
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if err != nil {
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return fmt.Errorf("dial wol: %w", err)
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}
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defer conn.Close()
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if _, err := conn.Write(packet); err != nil {
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return fmt.Errorf("write wol: %w", err)
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}
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return nil
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}
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func parseMAC(s string) ([]byte, error) {
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s = strings.ToLower(strings.TrimSpace(s))
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parts := strings.Split(s, ":")
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if len(parts) != 6 {
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return nil, fmt.Errorf("invalid MAC %q", s)
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}
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out := make([]byte, 6)
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for i, p := range parts {
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if len(p) != 2 {
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return nil, fmt.Errorf("invalid MAC octet %q", p)
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}
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b, err := hex.DecodeString(p)
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if err != nil {
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return nil, fmt.Errorf("invalid MAC %q: %w", s, err)
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}
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out[i] = b[0]
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}
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return out, nil
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}
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