Implements the "password" SSH authentication method.
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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