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35 lines
566 B
Go
35 lines
566 B
Go
package main
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import (
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"fmt"
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"io"
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"os"
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"os/exec"
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"crypto/md5"
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)
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// hashBinary computes MD5SUM of a binary file on disk
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func hashBinary(progName string) (string, error) {
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path, err := exec.LookPath(progName)
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if err != nil {
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return "", err
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}
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m := md5.New()
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file, err := os.Open(path) // For read access.
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if err != nil {
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return "", err
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}
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io.Copy(m, file)
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return fmt.Sprintf("%x", m.Sum(nil)), nil
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}
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// mustHashBinarySelf masks any error returned by hashBinary
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func mustHashBinarySelf() string {
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hash, _ := hashBinary(os.Args[0])
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return hash
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}
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