All files / src/custom-nodes/string-array-nodes StringArrayCallsWrapper.ts

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import * as format from 'string-template';
 
import { TNodeWithBlockStatement } from '../../types/node/TNodeWithBlockStatement';
import { TObfuscationEvent } from '../../types/event-emitters/TObfuscationEvent';
import { TStatement } from '../../types/node/TStatement';
 
import { ICustomNodeWithIdentifier } from '../../interfaces/custom-nodes/ICustomNodeWithIdentifier';
import { IOptions } from '../../interfaces/options/IOptions';
import { IStorage } from '../../interfaces/storages/IStorage';
 
import { ObfuscationEvents } from '../../enums/ObfuscationEvents';
import { StringArrayEncoding } from '../../enums/StringArrayEncoding';
 
import { NO_CUSTOM_NODES_PRESET } from '../../preset-options/NoCustomNodesPreset';
 
import { AtobTemplate } from '../../templates/custom-nodes/AtobTemplate';
import { Rc4Template } from '../../templates/custom-nodes/Rc4Template';
import { SelfDefendingTemplate } from '../../templates/custom-nodes/string-array-nodes/string-array-calls-wrapper/SelfDefendingTemplate';
import { StringArrayBase64DecodeNodeTemplate } from '../../templates/custom-nodes/string-array-nodes/string-array-calls-wrapper/StringArrayBase64DecodeNodeTemplate';
import { StringArrayCallsWrapperTemplate } from '../../templates/custom-nodes/string-array-nodes/string-array-calls-wrapper/StringArrayCallsWrapperTemplate';
import { StringArrayRc4DecodeNodeTemplate } from '../../templates/custom-nodes/string-array-nodes/string-array-calls-wrapper/StringArrayRC4DecodeNodeTemplate';
 
import { AbstractCustomNode } from '../AbstractCustomNode';
import { JavaScriptObfuscator } from '../../JavaScriptObfuscator';
import { NodeAppender } from '../../node/NodeAppender';
 
export class StringArrayCallsWrapper extends AbstractCustomNode implements ICustomNodeWithIdentifier {
    /**
     * @type {TObfuscationEvent}
     */
    protected readonly appendEvent: TObfuscationEvent = ObfuscationEvents.AfterObfuscation;
 
    /**
     * @type {IStorage <string>}
     */
    private stringArray: IStorage <string>;
 
    /**
     * @type {string}
     */
    private stringArrayName: string;
 
    /**
     * @type {string}
     */
    private stringArrayCallsWrapperName: string;
 
    /**
     * @param stringArrayCallsWrapperName
     * @param stringArrayName
     * @param stringArray
     * @param options
     */
    constructor (
        stringArrayCallsWrapperName: string,
        stringArrayName: string,
        stringArray: IStorage <string>,
        options: IOptions
    ) {
        super(options);
 
        this.stringArrayCallsWrapperName = stringArrayCallsWrapperName;
        this.stringArrayName = stringArrayName;
        this.stringArray = stringArray;
    }
 
    /**
     * @param blockScopeNode
     */
    public appendNode (blockScopeNode: TNodeWithBlockStatement): void {
        if (!this.stringArray.getLength()) {
            return;
        }
 
        NodeAppender.insertNodeAtIndex(blockScopeNode, this.getNode(), 1);
    }
 
    /**
     * @returns {string}
     */
    public getCode (): string {
        const decodeNodeTemplate: string = this.getDecodeStringArrayTemplate();
 
        return JavaScriptObfuscator.obfuscate(
            format(StringArrayCallsWrapperTemplate(), {
                decodeNodeTemplate,
                stringArrayCallsWrapperName: this.stringArrayCallsWrapperName,
                stringArrayName: this.stringArrayName
            }),
            Object.assign({}, NO_CUSTOM_NODES_PRESET, {
                seed: this.options.seed
            })
        ).getObfuscatedCode();
    }
 
    /**
     * @returns {string}
     */
    public getNodeIdentifier (): string {
        return this.stringArrayCallsWrapperName;
    };
 
    /**
     * @returns {TStatement[]}
     */
    public getNode (): TStatement[] {
        return super.getNode();
    }
 
    /**
     * @returns {string}
     */
    protected getDecodeStringArrayTemplate (): string {
        let decodeStringArrayTemplate: string = '',
            selfDefendingCode: string = '';
 
        if (this.options.selfDefending) {
            selfDefendingCode = format(SelfDefendingTemplate(), {
                stringArrayCallsWrapperName: this.stringArrayCallsWrapperName,
                stringArrayName: this.stringArrayName
            });
        }
 
        switch (this.options.stringArrayEncoding) {
            case StringArrayEncoding.base64:
                decodeStringArrayTemplate = format(StringArrayBase64DecodeNodeTemplate(), {
                    atobPolyfill: AtobTemplate(),
                    selfDefendingCode,
                    stringArrayCallsWrapperName: this.stringArrayCallsWrapperName
                });
 
                break;
 
            case StringArrayEncoding.rc4:
                decodeStringArrayTemplate = format(StringArrayRc4DecodeNodeTemplate(), {
                    atobPolyfill: AtobTemplate(),
                    rc4Polyfill: Rc4Template(),
                    selfDefendingCode,
                    stringArrayCallsWrapperName: this.stringArrayCallsWrapperName
                });
 
                break;
        }
 
        return decodeStringArrayTemplate;
    }
}