github.com/nuvolaris/nuv@v0.0.0-20240511174247-a74e3a52bfd8/auth/password_reader.go (about)

     1  // Licensed to the Apache Software Foundation (ASF) under one
     2  // or more contributor license agreements.  See the NOTICE file
     3  // distributed with this work for additional information
     4  // regarding copyright ownership.  The ASF licenses this file
     5  // to you under the Apache License, Version 2.0 (the
     6  // "License"); you may not use this file except in compliance
     7  // with the License.  You may obtain a copy of the License at
     8  //
     9  //   http://www.apache.org/licenses/LICENSE-2.0
    10  //
    11  // Unless required by applicable law or agreed to in writing,
    12  // software distributed under the License is distributed on an
    13  // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    14  // KIND, either express or implied.  See the License for the
    15  // specific language governing permissions and limitations
    16  // under the License.
    17  
    18  package auth
    19  
    20  import (
    21  	"errors"
    22  	"syscall"
    23  
    24  	"golang.org/x/term"
    25  )
    26  
    27  type PasswordReader interface {
    28  	ReadPassword() (string, error)
    29  }
    30  
    31  type StdInPasswordReader struct{}
    32  
    33  func (r StdInPasswordReader) ReadPassword() (string, error) {
    34  	pwd, error := term.ReadPassword(int(syscall.Stdin))
    35  	return string(pwd), error
    36  }
    37  
    38  var pwdReader PasswordReader = StdInPasswordReader{}
    39  
    40  func AskPassword() (string, error) {
    41  	pwd, err := pwdReader.ReadPassword()
    42  	if err != nil {
    43  		return "", err
    44  	}
    45  	if len(pwd) == 0 {
    46  		return "", errors.New("password is empty")
    47  	}
    48  	return pwd, nil
    49  }