49 lines
1.0 KiB
Go
49 lines
1.0 KiB
Go
package iokitregistry
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import (
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"errors"
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"fmt"
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"os/exec"
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"howett.net/plist"
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)
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var ErrFailed = errors.New("failed to query I/O Kit registry")
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type Entry struct {
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IOPlatformUUID string
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}
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func PlatformUUID() (string, error) {
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ioregPath, err := exec.LookPath("ioreg")
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if err != nil {
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// Fallback since on some systems the PATH
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// variable does not include /usr/sbin
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ioregPath = "/usr/sbin/ioreg"
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}
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ioregCmd := exec.Command(ioregPath, "-a", "-c", "IOPlatformExpertDevice", "-rd1")
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ioregOutput, err := ioregCmd.Output()
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if err != nil {
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return "", fmt.Errorf("%w: failed to run ioreg command: %v", ErrFailed, err)
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}
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var entries []Entry
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_, err = plist.Unmarshal(ioregOutput, &entries)
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if err != nil {
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return "", fmt.Errorf("%w: failed to unmarshal ioreg command's output: %v",
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ErrFailed, err)
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}
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for _, entry := range entries {
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if entry.IOPlatformUUID != "" {
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return entry.IOPlatformUUID, nil
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}
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}
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return "", fmt.Errorf("%w: no platform UUID found in the ioreg command's output",
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ErrFailed)
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}
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