oracledb
Version:
A Node.js module for Oracle Database access from JavaScript and TypeScript
84 lines (75 loc) • 3.09 kB
JavaScript
// Copyright (c) 2023, 2025, Oracle and/or its affiliates.
//-----------------------------------------------------------------------------
//
// This software is dual-licensed to you under the Universal Permissive License
// (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
// 2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose
// either license.
//
// If you elect to accept the software under the Apache License, Version 2.0,
// the following applies:
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//-----------------------------------------------------------------------------
'use strict';
const constants = require("../constants.js");
const Message = require("./base.js");
/**
* Executes a Fast Negotiation RPC function.
* It sends Protocol Negotiation, Datatype Negotiation
* and OSESS Key RPC in single round trip.
*
* @class FastAuthMessage
* @extends {Message}
*/
class FastAuthMessage extends Message {
/**
* Serializes the FastAuthMessage function arguments
*
* @param {object} buf input arguments
*/
encode(buf) {
buf.writeUInt8(constants.TNS_MSG_TYPE_FAST_AUTH);
buf.writeUInt8(1); // Fast Auth version
buf.writeUInt8(constants.TNS_SERVER_CONVERTS_CHARS); // flag 1
buf.writeUInt8(0); // flag 2
this.protocolMessage.encode(buf);
buf.writeUInt16BE(0); // server charset (unused)
buf.writeUInt8(0); // server charset flag (unused)
buf.writeUInt16BE(0); // server ncharset (unused)
buf.caps.ttcFieldVersion = constants.TNS_CCAP_FIELD_VERSION_19_1_EXT_1;
buf.writeUInt8(buf.caps.ttcFieldVersion);
this.dataTypeMessage.encode(buf);
this.authMessage.encode(buf);
buf.caps.ttcFieldVersion = constants.TNS_CCAP_FIELD_VERSION_MAX;
}
processMessage(buf, messageType) {
if (messageType === constants.TNS_MSG_TYPE_RENEGOTIATE) {
this.reNegotiate = true;
} else if (messageType === constants.TNS_MSG_TYPE_PROTOCOL) {
this.protocolMessage.processMessage(buf, messageType);
} else if (messageType === constants.TNS_MSG_TYPE_DATA_TYPES) {
this.dataTypeMessage.processMessage(buf, messageType);
} else {
this.authMessage.processMessage(buf, messageType);
this.endOfResponse = this.authMessage.endOfResponse;
if (this.authMessage.errorOccurred) {
// Capture the Error returned in TNS_MSG_TYPE_ERROR processing.
this.errorOccurred = this.authMessage.errorOccurred;
this.errorInfo = this.authMessage.errorInfo;
}
}
}
}
module.exports = FastAuthMessage;