37 lines
806 B
Go
37 lines
806 B
Go
package machineid
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import (
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"crypto/hmac"
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"crypto/sha256"
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"encoding/hex"
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"io"
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"io/ioutil"
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"os"
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"os/exec"
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"strings"
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)
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// run wraps `exec.Command` with easy access to stdout and stderr.
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func run(stdout, stderr io.Writer, cmd string, args ...string) error {
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c := exec.Command(cmd, args...)
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c.Stdin = os.Stdin
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c.Stdout = stdout
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c.Stderr = stderr
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return c.Run()
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}
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// protect calculates HMAC-SHA256 of the application ID, keyed by the machine ID and returns a hex-encoded string.
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func protect(appID, id string) string {
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mac := hmac.New(sha256.New, []byte(id))
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mac.Write([]byte(appID))
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return hex.EncodeToString(mac.Sum(nil))
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}
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func readFile(filename string) ([]byte, error) {
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return ioutil.ReadFile(filename)
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}
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func trim(s string) string {
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return strings.TrimSpace(strings.Trim(s, "\n"))
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}
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