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// This file was modified by Oracle on September 21, 2021.
// The changes involve saving additional authentication factor passwords
// in the command scope and enabling multi-factor authentication in the
// client-side when the server supports it.
// Modifications copyright (c) 2021, Oracle and/or its affiliates.
'use strict';
const Command = require('./command.js');
const Packets = require('../packets/index.js');
const ClientConstants = require('../constants/client');
const ClientHandshake = require('./client_handshake.js');
const CharsetToEncoding = require('../constants/charset_encodings.js');
class ChangeUser extends Command {
constructor(options, callback) {
super();
this.onResult = callback;
this.user = options.user;
this.password = options.password;
// "password1" is an alias of "password"
this.password1 = options.password;
this.password2 = options.password2;
this.password3 = options.password3;
this.database = options.database;
this.passwordSha1 = options.passwordSha1;
this.charsetNumber = options.charsetNumber;
this.currentConfig = options.currentConfig;
this.authenticationFactor = 0;
}
start(packet, connection) {
const newPacket = new Packets.ChangeUser({
flags: connection.config.clientFlags,
user: this.user,
database: this.database,
charsetNumber: this.charsetNumber,
password: this.password,
passwordSha1: this.passwordSha1,
authPluginData1: connection._handshakePacket.authPluginData1,
authPluginData2: connection._handshakePacket.authPluginData2
});
this.currentConfig.user = this.user;
this.currentConfig.password = this.password;
this.currentConfig.database = this.database;
this.currentConfig.charsetNumber = this.charsetNumber;
connection.clientEncoding = CharsetToEncoding[this.charsetNumber];
// clear prepared statements cache as all statements become invalid after changeUser
connection._statements.clear();
connection.writePacket(newPacket.toPacket());
// check if the server supports multi-factor authentication
const multiFactorAuthentication = connection.serverCapabilityFlags & ClientConstants.MULTI_FACTOR_AUTHENTICATION;
if (multiFactorAuthentication) {
// if the server supports multi-factor authentication, we enable it in
// the client
this.authenticationFactor = 1;
}
return ChangeUser.prototype.handshakeResult;
}
}
ChangeUser.prototype.handshakeResult =
ClientHandshake.prototype.handshakeResult;
ChangeUser.prototype.calculateNativePasswordAuthToken =
ClientHandshake.prototype.calculateNativePasswordAuthToken;
module.exports = ChangeUser;
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