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import * as commander from 'commander';
import * as path from 'path';
import { TInputCLIOptions } from '../types/options/TInputCLIOptions';
import { TInputOptions } from '../types/options/TInputOptions';
import { TSourceCodeData } from '../types/cli/TSourceCodeData';
import { IFileData } from '../interfaces/cli/IFileData';
import { IInitializable } from '../interfaces/IInitializable';
import { IObfuscatedCode } from '../interfaces/source-code/IObfuscatedCode';
import { initializable } from '../decorators/Initializable';
import { DEFAULT_PRESET } from '../options/presets/Default';
import { ArraySanitizer } from './sanitizers/ArraySanitizer';
import { BooleanSanitizer } from './sanitizers/BooleanSanitizer';
import { IdentifierNamesGeneratorSanitizer } from './sanitizers/IdentifierNamesGeneratorSanitizer';
import { ObfuscationTargetSanitizer } from './sanitizers/ObfuscatingTargetSanitizer';
import { SourceMapModeSanitizer } from './sanitizers/SourceMapModeSanitizer';
import { StringArrayEncodingSanitizer } from './sanitizers/StringArrayEncodingSanitizer';
import { CLIUtils } from './utils/CLIUtils';
import { JavaScriptObfuscator } from '../JavaScriptObfuscatorFacade';
import { SourceCodeReader } from './utils/SourceCodeReader';
export class JavaScriptObfuscatorCLI implements IInitializable {
/**
* @type {BufferEncoding}
*/
public static readonly encoding: BufferEncoding = 'utf8';
/**
* @type {string}
*/
public static obfuscatedFilePrefix: string = '-obfuscated';
/**
* @type {string}
*/
private static readonly baseIdentifiersPrefix: string = 'a';
/**
* @type {string[]}
*/
private readonly arguments: string[];
/**
* @type {string[]}
*/
private readonly rawArguments: string[];
/**
* @type {commander.CommanderStatic}
*/
@initializable()
private commands!: commander.CommanderStatic;
/**
* @type {TInputCLIOptions}
*/
@initializable()
private inputCLIOptions!: TInputCLIOptions;
/**
* @type {string}
*/
@initializable()
private inputPath!: string;
/**
* @param {string[]} argv
*/
constructor (argv: string[]) {
this.rawArguments = argv;
this.arguments = argv.slice(2);
}
/**
* @param {TObject} options
* @returns {TInputOptions}
*/
private static filterOptions (options: TInputCLIOptions): TInputOptions {
const filteredOptions: TInputOptions = {};
Object
.keys(options)
.forEach((option: keyof TInputCLIOptions) => {
if (options[option] === undefined) {
return;
}
filteredOptions[option] = options[option];
});
return filteredOptions;
}
/**
* @param {string} sourceCode
* @param {string} outputCodePath
* @param {TInputOptions} options
*/
private static processSourceCodeWithoutSourceMap (
sourceCode: string,
outputCodePath: string,
options: TInputOptions
): void {
const obfuscatedCode: string = JavaScriptObfuscator.obfuscate(sourceCode, options).getObfuscatedCode();
CLIUtils.writeFile(outputCodePath, obfuscatedCode);
}
/**
* @param {string} sourceCode
* @param {string} outputCodePath
* @param {TInputOptions} options
*/
private static processSourceCodeWithSourceMap (
sourceCode: string,
outputCodePath: string,
options: TInputOptions
): void {
const outputSourceMapPath: string = CLIUtils.getOutputSourceMapPath(
outputCodePath,
options.sourceMapFileName || ''
);
options = {
...options,
sourceMapFileName: path.basename(outputSourceMapPath)
};
const obfuscatedCode: IObfuscatedCode = JavaScriptObfuscator.obfuscate(sourceCode, options);
CLIUtils.writeFile(outputCodePath, obfuscatedCode.getObfuscatedCode());
if (options.sourceMapMode === 'separate' && obfuscatedCode.getSourceMap()) {
CLIUtils.writeFile(outputSourceMapPath, obfuscatedCode.getSourceMap());
}
}
public initialize (): void {
this.inputPath = path.normalize(this.arguments[0] || '');
this.commands = <commander.CommanderStatic>(new commander.Command());
this.configureCommands();
this.configureHelp();
this.inputCLIOptions = this.commands.opts();
}
public run (): void {
const canShowHelp: boolean = !this.arguments.length || this.arguments.includes('--help');
if (canShowHelp) {
this.commands.outputHelp();
return;
}
const sourceCodeData: TSourceCodeData = new SourceCodeReader(this.inputCLIOptions)
.readSourceCode(this.inputPath);
this.processSourceCodeData(sourceCodeData);
}
/**
* @returns {TInputOptions}
*/
private buildOptions (): TInputOptions {
const inputCLIOptions: TInputOptions = JavaScriptObfuscatorCLI.filterOptions(this.inputCLIOptions);
const configFilePath: string | undefined = this.inputCLIOptions.config;
const configFileLocation: string = configFilePath ? path.resolve(configFilePath, '.') : '';
const configFileOptions: TInputOptions = configFileLocation ? CLIUtils.getUserConfig(configFileLocation) : {};
const inputFileName: string = path.basename(this.inputPath);
return {
...DEFAULT_PRESET,
...configFileOptions,
...inputCLIOptions,
inputFileName
};
}
private configureCommands (): void {
this.commands
.usage('<inputPath> [options]')
.version(
process.env.VERSION || 'unknown',
'-v, --version'
)
.option(
'-o, --output <path>',
'Output path for obfuscated code'
)
.option(
'--compact <boolean>',
'Disable one line output code compacting',
BooleanSanitizer
)
.option(
'--config <boolean>',
'Name of js / json config file'
)
.option(
'--control-flow-flattening <boolean>',
'Enables control flow flattening',
BooleanSanitizer
)
.option(
'--control-flow-flattening-threshold <number>',
'The probability that the control flow flattening transformation will be applied to the node',
parseFloat
)
.option(
'--dead-code-injection <boolean>',
'Enables dead code injection',
BooleanSanitizer
)
.option(
'--dead-code-injection-threshold <number>',
'The probability that the dead code injection transformation will be applied to the node',
parseFloat
)
.option(
'--debug-protection <boolean>',
'Disable browser Debug panel (can cause DevTools enabled browser freeze)',
BooleanSanitizer
)
.option(
'--debug-protection-interval <boolean>',
'Disable browser Debug panel even after page was loaded (can cause DevTools enabled browser freeze)',
BooleanSanitizer
)
.option(
'--disable-console-output <boolean>',
'Allow console.log, console.info, console.error and console.warn messages output into browser console',
BooleanSanitizer
)
.option(
'--domain-lock <list> (comma separated, without whitespaces)',
'Blocks the execution of the code in domains that do not match the passed RegExp patterns (comma separated)',
ArraySanitizer
)
.option(
'--exclude <list> (comma separated, without whitespaces)',
'A filename or glob which indicates files to exclude from obfuscation',
ArraySanitizer
)
.option(
'--identifier-names-generator <string>',
'Sets identifier names generator. ' +
'Values: hexadecimal, mangled, dictionary. ' +
'Default: hexadecimal',
IdentifierNamesGeneratorSanitizer
)
.option(
'--identifiers-prefix <string>',
'Sets prefix for all global identifiers.'
)
.option(
'--identifiers-dictionary <list> (comma separated, without whitespaces)',
'Identifiers dictionary (comma separated) for `--identifier-names-generator dictionary` option',
ArraySanitizer
)
.option(
'--log <boolean>', 'Enables logging of the information to the console',
BooleanSanitizer
)
.option(
'--reserved-names <list> (comma separated, without whitespaces)',
'Disables obfuscation and generation of identifiers, which being matched by passed RegExp patterns (comma separated)',
ArraySanitizer
)
.option(
'--reserved-strings <list> (comma separated, without whitespaces)',
'Disables transformation of string literals, which being matched by passed RegExp patterns (comma separated)',
ArraySanitizer
)
.option(
'--rename-globals <boolean>', 'Allows to enable obfuscation of global variable and function names with declaration.',
BooleanSanitizer
)
.option(
'--rotate-string-array <boolean>', 'Enable rotation of string array values during obfuscation',
BooleanSanitizer
)
.option(
'--seed <string|number>',
'Sets seed for random generator. This is useful for creating repeatable results.',
parseFloat
)
.option(
'--self-defending <boolean>',
'Disables self-defending for obfuscated code',
BooleanSanitizer
)
.option(
'--shuffle-string-array <boolean>', 'Randomly shuffles string array items',
BooleanSanitizer
)
.option(
'--source-map <boolean>',
'Enables source map generation',
BooleanSanitizer
)
.option(
'--source-map-base-url <string>',
'Sets base url to the source map import url when `--source-map-mode=separate`'
)
.option(
'--source-map-file-name <string>',
'Sets file name for output source map when `--source-map-mode=separate`'
)
.option(
'--source-map-mode <string>',
'Specify source map output mode. ' +
'Values: inline, separate. ' +
'Default: separate',
SourceMapModeSanitizer
)
.option(
'--split-strings <boolean>',
'Splits literal strings into chunks with length of `splitStringsChunkLength` option value',
BooleanSanitizer
)
.option(
'--split-strings-chunk-length <number>',
'Sets chunk length of `splitStrings` option',
parseFloat
)
.option(
'--string-array <boolean>',
'Disables gathering of all literal strings into an array and replacing every literal string with an array call',
BooleanSanitizer
)
.option(
'--string-array-encoding <string|boolean>',
'Encodes all strings in strings array using base64 or rc4 (this option can slow down your code speed. ' +
'Values: true, false, base64, rc4. ' +
'Default: false',
StringArrayEncodingSanitizer
)
.option(
'--string-array-threshold <number>',
'The probability that the literal string will be inserted into stringArray (Default: 0.8, Min: 0, Max: 1)',
parseFloat
)
.option(
'--target <string>',
'Allows to set target environment for obfuscated code. ' +
'Values: browser, browser-no-eval, node. ' +
'Default: browser',
ObfuscationTargetSanitizer
)
.option(
'--transform-object-keys <boolean>',
'Enables transformation of object keys',
BooleanSanitizer
)
.option(
'--unicode-escape-sequence <boolean>',
'Allows to enable/disable string conversion to unicode escape sequence',
BooleanSanitizer
)
.parse(this.rawArguments);
}
private configureHelp (): void {
this.commands.on('--help', () => {
console.log(' Examples:\n');
console.log(' %> javascript-obfuscator input_file_name.js --compact true --self-defending false');
console.log(' %> javascript-obfuscator input_file_name.js --output output_file_name.js --compact true --self-defending false');
console.log(' %> javascript-obfuscator input_directory_name --compact true --self-defending false');
console.log('');
});
}
/**
* @param {TSourceCodeData} sourceCodeData
*/
private processSourceCodeData (sourceCodeData: TSourceCodeData): void {
const outputPath: string = this.inputCLIOptions.output
? path.normalize(this.inputCLIOptions.output)
: '';
if (!Array.isArray(sourceCodeData)) {
const outputCodePath: string = outputPath || CLIUtils.getOutputCodePath(this.inputPath);
this.processSourceCode(sourceCodeData, outputCodePath, null);
} else {
sourceCodeData.forEach(({ filePath, content }: IFileData, index: number) => {
const outputCodePath: string = outputPath
? path.join(outputPath, filePath)
: CLIUtils.getOutputCodePath(filePath);
this.processSourceCode(content, outputCodePath, index);
});
}
}
/**
* @param {string} sourceCode
* @param {string} outputCodePath
* @param {number | null} sourceCodeIndex
*/
private processSourceCode (
sourceCode: string,
outputCodePath: string,
sourceCodeIndex: number | null
): void {
let options: TInputOptions = this.buildOptions();
if (sourceCodeIndex !== null) {
const baseIdentifiersPrefix: string = this.inputCLIOptions.identifiersPrefix
|| JavaScriptObfuscatorCLI.baseIdentifiersPrefix;
const identifiersPrefix: string = `${baseIdentifiersPrefix}${sourceCodeIndex}`;
options = {
...options,
identifiersPrefix
};
}
if (options.sourceMap) {
JavaScriptObfuscatorCLI.processSourceCodeWithSourceMap(sourceCode, outputCodePath, options);
} else {
JavaScriptObfuscatorCLI.processSourceCodeWithoutSourceMap(sourceCode, outputCodePath, options);
}
}
}