a1feca39c2
crypto/keyring: `Keybase` interface gives way to its successor: `Keyring`. `LegacyKeybase` interface is added in order to guarantee limited backward compatibility with the old `Keybase` interface for the sole purpose of migrating keys across the new keyring backends. The package no longer depends on the `github.com/types.Config` singleton. `SupportedAlgos` and `SupportedLedgerAlgos` methods have been removed. The keyring just fails when trying to perform an action with an unsupported algorithm. crypto/ subdirs reorganization: `crypto/keys/hd` was moved to `crypto/hd`, which now groups together all HD wallets related types and utilities. client/input: * Removal of unnecessary `GetCheckPassword`, `PrintPrefixed` functions. * `GetConfirmation`'s signature changed to take in a io.Writer for better integration with `cobra.Command` types. client/context: * In-memory keyring is allocated in the context when `--gen-only` flag is passed in. `GetFromFields` does no longer silently allocate a keyring, it takes one as argument. Co-authored with @jgimeno Co-authored-by: Jonathan Gimeno <jgimeno@gmail.com>
95 lines
2.3 KiB
Go
95 lines
2.3 KiB
Go
package input
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import (
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"bufio"
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"fmt"
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"io"
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"os"
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"strings"
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"github.com/bgentry/speakeasy"
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isatty "github.com/mattn/go-isatty"
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)
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// MinPassLength is the minimum acceptable password length
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const MinPassLength = 8
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// GetPassword will prompt for a password one-time (to sign a tx)
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// It enforces the password length
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func GetPassword(prompt string, buf *bufio.Reader) (pass string, err error) {
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if inputIsTty() {
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pass, err = speakeasy.FAsk(os.Stderr, prompt)
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} else {
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pass, err = readLineFromBuf(buf)
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}
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if err != nil {
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return "", err
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}
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if len(pass) < MinPassLength {
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// Return the given password to the upstream client so it can handle a
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// non-STDIN failure gracefully.
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return pass, fmt.Errorf("password must be at least %d characters", MinPassLength)
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}
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return pass, nil
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}
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// GetConfirmation will request user give the confirmation from stdin.
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// "y", "Y", "yes", "YES", and "Yes" all count as confirmations.
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// If the input is not recognized, it returns false and a nil error.
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func GetConfirmation(prompt string, r *bufio.Reader, w io.Writer) (bool, error) {
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if inputIsTty() {
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fmt.Printf("%s [y/N]: ", prompt)
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}
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response, err := readLineFromBuf(r)
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if err != nil {
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return false, err
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}
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response = strings.TrimSpace(response)
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if len(response) == 0 {
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return false, nil
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}
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response = strings.ToLower(response)
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if response[0] == 'y' {
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return true, nil
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}
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return false, nil
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}
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// GetString simply returns the trimmed string output of a given reader.
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func GetString(prompt string, buf *bufio.Reader) (string, error) {
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if inputIsTty() && prompt != "" {
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fmt.Fprintf(os.Stderr, "> %s\n", prompt)
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}
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out, err := readLineFromBuf(buf)
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if err != nil {
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return "", err
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}
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return strings.TrimSpace(out), nil
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}
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// inputIsTty returns true iff we have an interactive prompt,
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// where we can disable echo and request to repeat the password.
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// If false, we can optimize for piped input from another command
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func inputIsTty() bool {
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return isatty.IsTerminal(os.Stdin.Fd()) || isatty.IsCygwinTerminal(os.Stdin.Fd())
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}
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// readLineFromBuf reads one line from stdin.
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// Subsequent calls reuse the same buffer, so we don't lose
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// any input when reading a password twice (to verify)
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func readLineFromBuf(buf *bufio.Reader) (string, error) {
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pass, err := buf.ReadString('\n')
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if err != nil {
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return "", err
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}
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return strings.TrimSpace(pass), nil
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}
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