Class: Net::SSH::Authentication::Methods::Password

### Home Classes Methods

### In Files

- lib/net/ssh/authentication/methods/password.rb

### Parent

Net::SSH::Authentication::Methods::Abstract

### Methods

- #authenticate

### Included Modules

- Prompt

### Files

- README.rdoc

### Class/Module Index

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No matching classes.

# Net::SSH::Authentication::Methods::Password

Implements the "password" SSH authentication method.

### Constants

NUMBER_OF_PASSWORD_PROMPTS

### Public Instance Methods

authenticate(next_service, username, password=nil) click to toggle source

Attempt to authenticate the given user for the given service. If the password parameter is nil, this will ask for password

    # File lib/net/ssh/authentication/methods/password.rb, line 16
    def authenticate(next_service, username, password=nil)
      retries = 0
      max_retries =  get_max_retries
      return false if !password && max_retries == 0

      begin
        password_to_send = password || ask_password(username)

        send_message(userauth_request(username, next_service, "password", false, password_to_send))
        message = session.next_message
        retries += 1

        if message.type == USERAUTH_FAILURE
          debug { "password failed" }

          raise Net::SSH::Authentication::DisallowedMethod unless
            message[:authentications].split(/,/).include? 'password'
          password = nil
        end
      end until (message.type != USERAUTH_FAILURE || retries >= max_retries)

      case message.type
        when USERAUTH_SUCCESS
          debug { "password succeeded" }
          return true
        when USERAUTH_FAILURE
          return false
        when USERAUTH_PASSWD_CHANGEREQ
          debug { "password change request received, failing" }
          return false
        else
          raise Net::SSH::Exception, "unexpected reply to USERAUTH_REQUEST: #{message.type} (#{message.inspect})"
      end
    end

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