tedious
Version:
A TDS driver, for connecting to MS SQLServer databases.
209 lines (208 loc) • 26.2 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _sprintfJs = require("sprintf-js");
var _writableTrackingBuffer = _interopRequireDefault(require("./tracking-buffer/writable-tracking-buffer"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const optionBufferSize = 20;
const TOKEN = {
VERSION: 0x00,
ENCRYPTION: 0x01,
INSTOPT: 0x02,
THREADID: 0x03,
MARS: 0x04,
FEDAUTHREQUIRED: 0x06,
TERMINATOR: 0xFF
};
const ENCRYPT = {
OFF: 0x00,
ON: 0x01,
NOT_SUP: 0x02,
REQ: 0x03
};
const encryptByValue = {};
for (const name in ENCRYPT) {
const value = ENCRYPT[name];
encryptByValue[value] = name;
}
const MARS = {
OFF: 0x00,
ON: 0x01
};
const marsByValue = {};
for (const name in MARS) {
const value = MARS[name];
marsByValue[value] = name;
}
/*
s2.2.6.4
*/
class PreloginPayload {
constructor(bufferOrOptions = {
encrypt: false,
version: {
major: 0,
minor: 0,
build: 0,
subbuild: 0
}
}) {
if (bufferOrOptions instanceof Buffer) {
this.data = bufferOrOptions;
this.options = {
encrypt: false,
version: {
major: 0,
minor: 0,
build: 0,
subbuild: 0
}
};
} else {
this.options = bufferOrOptions;
this.createOptions();
}
this.extractOptions();
}
createOptions() {
const options = [this.createVersionOption(), this.createEncryptionOption(), this.createInstanceOption(), this.createThreadIdOption(), this.createMarsOption(), this.createFedAuthOption()];
let length = 0;
for (let i = 0, len = options.length; i < len; i++) {
const option = options[i];
length += 5 + option.data.length;
}
length++; // terminator
this.data = Buffer.alloc(length, 0);
let optionOffset = 0;
let optionDataOffset = 5 * options.length + 1;
for (let j = 0, len = options.length; j < len; j++) {
const option = options[j];
this.data.writeUInt8(option.token, optionOffset + 0);
this.data.writeUInt16BE(optionDataOffset, optionOffset + 1);
this.data.writeUInt16BE(option.data.length, optionOffset + 3);
optionOffset += 5;
option.data.copy(this.data, optionDataOffset);
optionDataOffset += option.data.length;
}
this.data.writeUInt8(TOKEN.TERMINATOR, optionOffset);
}
createVersionOption() {
const buffer = new _writableTrackingBuffer.default(optionBufferSize);
buffer.writeUInt8(this.options.version.major);
buffer.writeUInt8(this.options.version.minor);
buffer.writeUInt16BE(this.options.version.build);
buffer.writeUInt16BE(this.options.version.subbuild);
return {
token: TOKEN.VERSION,
data: buffer.data
};
}
createEncryptionOption() {
const buffer = new _writableTrackingBuffer.default(optionBufferSize);
if (this.options.encrypt) {
buffer.writeUInt8(ENCRYPT.ON);
} else {
buffer.writeUInt8(ENCRYPT.NOT_SUP);
}
return {
token: TOKEN.ENCRYPTION,
data: buffer.data
};
}
createInstanceOption() {
const buffer = new _writableTrackingBuffer.default(optionBufferSize);
buffer.writeUInt8(0x00);
return {
token: TOKEN.INSTOPT,
data: buffer.data
};
}
createThreadIdOption() {
const buffer = new _writableTrackingBuffer.default(optionBufferSize);
buffer.writeUInt32BE(0x00);
return {
token: TOKEN.THREADID,
data: buffer.data
};
}
createMarsOption() {
const buffer = new _writableTrackingBuffer.default(optionBufferSize);
buffer.writeUInt8(MARS.OFF);
return {
token: TOKEN.MARS,
data: buffer.data
};
}
createFedAuthOption() {
const buffer = new _writableTrackingBuffer.default(optionBufferSize);
buffer.writeUInt8(0x01);
return {
token: TOKEN.FEDAUTHREQUIRED,
data: buffer.data
};
}
extractOptions() {
let offset = 0;
while (this.data[offset] !== TOKEN.TERMINATOR) {
let dataOffset = this.data.readUInt16BE(offset + 1);
const dataLength = this.data.readUInt16BE(offset + 3);
switch (this.data[offset]) {
case TOKEN.VERSION:
this.extractVersion(dataOffset);
break;
case TOKEN.ENCRYPTION:
this.extractEncryption(dataOffset);
break;
case TOKEN.INSTOPT:
this.extractInstance(dataOffset);
break;
case TOKEN.THREADID:
if (dataLength > 0) {
this.extractThreadId(dataOffset);
}
break;
case TOKEN.MARS:
this.extractMars(dataOffset);
break;
case TOKEN.FEDAUTHREQUIRED:
this.extractFedAuth(dataOffset);
break;
}
offset += 5;
dataOffset += dataLength;
}
}
extractVersion(offset) {
this.version = {
major: this.data.readUInt8(offset + 0),
minor: this.data.readUInt8(offset + 1),
build: this.data.readUInt16BE(offset + 2),
subbuild: this.data.readUInt16BE(offset + 4)
};
}
extractEncryption(offset) {
this.encryption = this.data.readUInt8(offset);
this.encryptionString = encryptByValue[this.encryption];
}
extractInstance(offset) {
this.instance = this.data.readUInt8(offset);
}
extractThreadId(offset) {
this.threadId = this.data.readUInt32BE(offset);
}
extractMars(offset) {
this.mars = this.data.readUInt8(offset);
this.marsString = marsByValue[this.mars];
}
extractFedAuth(offset) {
this.fedAuthRequired = this.data.readUInt8(offset);
}
toString(indent = '') {
return indent + 'PreLogin - ' + (0, _sprintfJs.sprintf)('version:%d.%d.%d.%d, encryption:0x%02X(%s), instopt:0x%02X, threadId:0x%08X, mars:0x%02X(%s)', this.version.major, this.version.minor, this.version.build, this.version.subbuild, this.encryption ? this.encryption : 0, this.encryptionString ? this.encryptionString : '', this.instance ? this.instance : 0, this.threadId ? this.threadId : 0, this.mars ? this.mars : 0, this.marsString ? this.marsString : '');
}
}
var _default = exports.default = PreloginPayload;
module.exports = PreloginPayload;
//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"names":["_sprintfJs","require","_writableTrackingBuffer","_interopRequireDefault","obj","__esModule","default","optionBufferSize","TOKEN","VERSION","ENCRYPTION","INSTOPT","THREADID","MARS","FEDAUTHREQUIRED","TERMINATOR","ENCRYPT","OFF","ON","NOT_SUP","REQ","encryptByValue","name","value","marsByValue","PreloginPayload","constructor","bufferOrOptions","encrypt","version","major","minor","build","subbuild","Buffer","data","options","createOptions","extractOptions","createVersionOption","createEncryptionOption","createInstanceOption","createThreadIdOption","createMarsOption","createFedAuthOption","length","i","len","option","alloc","optionOffset","optionDataOffset","j","writeUInt8","token","writeUInt16BE","copy","buffer","WritableTrackingBuffer","writeUInt32BE","offset","dataOffset","readUInt16BE","dataLength","extractVersion","extractEncryption","extractInstance","extractThreadId","extractMars","extractFedAuth","readUInt8","encryption","encryptionString","instance","threadId","readUInt32BE","mars","marsString","fedAuthRequired","toString","indent","sprintf","_default","exports","module"],"sources":["../src/prelogin-payload.ts"],"sourcesContent":["import { sprintf } from 'sprintf-js';\n\nimport WritableTrackingBuffer from './tracking-buffer/writable-tracking-buffer';\n\nconst optionBufferSize = 20;\n\nconst TOKEN = {\n  VERSION: 0x00,\n  ENCRYPTION: 0x01,\n  INSTOPT: 0x02,\n  THREADID: 0x03,\n  MARS: 0x04,\n  FEDAUTHREQUIRED: 0x06,\n  TERMINATOR: 0xFF\n};\n\nconst ENCRYPT: { [key: string]: number } = {\n  OFF: 0x00,\n  ON: 0x01,\n  NOT_SUP: 0x02,\n  REQ: 0x03\n};\n\nconst encryptByValue: { [key: number]: string } = {};\n\nfor (const name in ENCRYPT) {\n  const value = ENCRYPT[name];\n  encryptByValue[value] = name;\n}\n\nconst MARS: { [key: string]: number } = {\n  OFF: 0x00,\n  ON: 0x01\n};\n\nconst marsByValue: { [key: number]: string } = {};\n\nfor (const name in MARS) {\n  const value = MARS[name];\n  marsByValue[value] = name;\n}\n\ninterface Options {\n  encrypt: boolean;\n  version: {\n    major: number;\n    minor: number;\n    build: number;\n    subbuild: number;\n  };\n}\n\n/*\n  s2.2.6.4\n */\nclass PreloginPayload {\n  declare data: Buffer;\n  declare options: Options;\n\n  declare version: {\n    major: number;\n    minor: number;\n    build: number;\n    subbuild: number;\n  };\n\n  declare encryption: number;\n  declare encryptionString: string;\n\n  declare instance: number;\n\n  declare threadId: number;\n\n  declare mars: number;\n  declare marsString: string;\n  declare fedAuthRequired: number;\n\n  constructor(bufferOrOptions: Buffer | Options = { encrypt: false, version: { major: 0, minor: 0, build: 0, subbuild: 0 } }) {\n    if (bufferOrOptions instanceof Buffer) {\n      this.data = bufferOrOptions;\n      this.options = { encrypt: false, version: { major: 0, minor: 0, build: 0, subbuild: 0 } };\n    } else {\n      this.options = bufferOrOptions;\n      this.createOptions();\n    }\n    this.extractOptions();\n  }\n\n  createOptions() {\n    const options = [\n      this.createVersionOption(),\n      this.createEncryptionOption(),\n      this.createInstanceOption(),\n      this.createThreadIdOption(),\n      this.createMarsOption(),\n      this.createFedAuthOption()\n    ];\n\n    let length = 0;\n    for (let i = 0, len = options.length; i < len; i++) {\n      const option = options[i];\n      length += 5 + option.data.length;\n    }\n    length++; // terminator\n    this.data = Buffer.alloc(length, 0);\n    let optionOffset = 0;\n    let optionDataOffset = 5 * options.length + 1;\n\n    for (let j = 0, len = options.length; j < len; j++) {\n      const option = options[j];\n      this.data.writeUInt8(option.token, optionOffset + 0);\n      this.data.writeUInt16BE(optionDataOffset, optionOffset + 1);\n      this.data.writeUInt16BE(option.data.length, optionOffset + 3);\n      optionOffset += 5;\n      option.data.copy(this.data, optionDataOffset);\n      optionDataOffset += option.data.length;\n    }\n\n    this.data.writeUInt8(TOKEN.TERMINATOR, optionOffset);\n  }\n\n  createVersionOption() {\n    const buffer = new WritableTrackingBuffer(optionBufferSize);\n    buffer.writeUInt8(this.options.version.major);\n    buffer.writeUInt8(this.options.version.minor);\n    buffer.writeUInt16BE(this.options.version.build);\n    buffer.writeUInt16BE(this.options.version.subbuild);\n    return {\n      token: TOKEN.VERSION,\n      data: buffer.data\n    };\n  }\n\n  createEncryptionOption() {\n    const buffer = new WritableTrackingBuffer(optionBufferSize);\n    if (this.options.encrypt) {\n      buffer.writeUInt8(ENCRYPT.ON);\n    } else {\n      buffer.writeUInt8(ENCRYPT.NOT_SUP);\n    }\n    return {\n      token: TOKEN.ENCRYPTION,\n      data: buffer.data\n    };\n  }\n\n  createInstanceOption() {\n    const buffer = new WritableTrackingBuffer(optionBufferSize);\n    buffer.writeUInt8(0x00);\n    return {\n      token: TOKEN.INSTOPT,\n      data: buffer.data\n    };\n  }\n\n  createThreadIdOption() {\n    const buffer = new WritableTrackingBuffer(optionBufferSize);\n    buffer.writeUInt32BE(0x00);\n    return {\n      token: TOKEN.THREADID,\n      data: buffer.data\n    };\n  }\n\n  createMarsOption() {\n    const buffer = new WritableTrackingBuffer(optionBufferSize);\n    buffer.writeUInt8(MARS.OFF);\n    return {\n      token: TOKEN.MARS,\n      data: buffer.data\n    };\n  }\n\n  createFedAuthOption() {\n    const buffer = new WritableTrackingBuffer(optionBufferSize);\n    buffer.writeUInt8(0x01);\n    return {\n      token: TOKEN.FEDAUTHREQUIRED,\n      data: buffer.data\n    };\n  }\n\n  extractOptions() {\n    let offset = 0;\n    while (this.data[offset] !== TOKEN.TERMINATOR) {\n      let dataOffset = this.data.readUInt16BE(offset + 1);\n      const dataLength = this.data.readUInt16BE(offset + 3);\n      switch (this.data[offset]) {\n        case TOKEN.VERSION:\n          this.extractVersion(dataOffset);\n          break;\n        case TOKEN.ENCRYPTION:\n          this.extractEncryption(dataOffset);\n          break;\n        case TOKEN.INSTOPT:\n          this.extractInstance(dataOffset);\n          break;\n        case TOKEN.THREADID:\n          if (dataLength > 0) {\n            this.extractThreadId(dataOffset);\n          }\n          break;\n        case TOKEN.MARS:\n          this.extractMars(dataOffset);\n          break;\n        case TOKEN.FEDAUTHREQUIRED:\n          this.extractFedAuth(dataOffset);\n          break;\n      }\n      offset += 5;\n      dataOffset += dataLength;\n    }\n  }\n\n  extractVersion(offset: number) {\n    this.version = {\n      major: this.data.readUInt8(offset + 0),\n      minor: this.data.readUInt8(offset + 1),\n      build: this.data.readUInt16BE(offset + 2),\n      subbuild: this.data.readUInt16BE(offset + 4)\n    };\n  }\n\n  extractEncryption(offset: number) {\n    this.encryption = this.data.readUInt8(offset);\n    this.encryptionString = encryptByValue[this.encryption];\n  }\n\n  extractInstance(offset: number) {\n    this.instance = this.data.readUInt8(offset);\n  }\n\n  extractThreadId(offset: number) {\n    this.threadId = this.data.readUInt32BE(offset);\n  }\n\n  extractMars(offset: number) {\n    this.mars = this.data.readUInt8(offset);\n    this.marsString = marsByValue[this.mars];\n  }\n\n  extractFedAuth(offset: number) {\n    this.fedAuthRequired = this.data.readUInt8(offset);\n  }\n\n  toString(indent = '') {\n    return indent + 'PreLogin - ' + sprintf(\n      'version:%d.%d.%d.%d, encryption:0x%02X(%s), instopt:0x%02X, threadId:0x%08X, mars:0x%02X(%s)',\n      this.version.major, this.version.minor, this.version.build, this.version.subbuild,\n      this.encryption ? this.encryption : 0,\n      this.encryptionString ? this.encryptionString : '',\n      this.instance ? this.instance : 0,\n      this.threadId ? this.threadId : 0,\n      this.mars ? this.mars : 0,\n      this.marsString ? this.marsString : ''\n    );\n  }\n}\n\nexport default PreloginPayload;\nmodule.exports = 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