1 files changed, 47 insertions, 0 deletions
diff --git a/node_modules/mysql2/lib/commands/change_user.js b/node_modules/mysql2/lib/commands/change_user.js
new file mode 100644
index 0000000..e2b2a09
--- /dev/null
+++ b/node_modules/mysql2/lib/commands/change_user.js
@@ -0,0 +1,47 @@
+'use strict';
+
+const Command = require('./command.js');
+const Packets = require('../packets/index.js');
+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;
+    this.database = options.database;
+    this.passwordSha1 = options.passwordSha1;
+    this.charsetNumber = options.charsetNumber;
+    this.currentConfig = options.currentConfig;
+  }
+  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];
+    // reset prepared statements cache as all statements become invalid after changeUser
+    connection._statements.reset();
+    connection.writePacket(newPacket.toPacket());
+    return ChangeUser.prototype.handshakeResult;
+  }
+}
+
+ChangeUser.prototype.handshakeResult =
+  ClientHandshake.prototype.handshakeResult;
+ChangeUser.prototype.calculateNativePasswordAuthToken =
+  ClientHandshake.prototype.calculateNativePasswordAuthToken;
+
+module.exports = ChangeUser;