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Add support for passphrase to publicKey() #24

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Add support for passphrase to publicKey() #24

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16 changes: 16 additions & 0 deletions ssh.go
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Original file line number Diff line number Diff line change
Expand Up @@ -258,6 +258,22 @@ func publicKey(file string) (ssh.AuthMethod, error) {
}

key, err := ssh.ParsePrivateKey(buffer)
if err != nil && err.Error() == "ssh: this private key is passphrase protected" {
// Note: Newer version of Go support the error type `PassphraseMissingError'. Using that, the error check is:
// if err, ok := err.(*PassphraseMissingError); !ok {...}
// Note: Put the variable name just into a variable; would need to be passed through from fx/middlewares/ssh.go
// using context.Contexter.
envName := "SSH_PASS_PHRASE"
passphrase := os.Getenv(envName)
if passphrase != "" {
key, err = ssh.ParsePrivateKeyWithPassphrase(buffer, []byte(passphrase))
if err != nil {
err = fmt.Errorf("Using passphrase from environment: %s, %v", envName, err)
}
} else {
err = fmt.Errorf("No passphrase defined by environment: %s, %v", envName, err)
}
}
if err != nil {
return nil, err
}
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