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| import * as estraverse from 'estraverse';
import * as ESTree from 'estree';
import { TNodeGroup } from './types/TNodeGroup';
import { TNodeObfuscator } from './types/TNodeObfuscator';
import { ICustomNode } from './interfaces/custom-nodes/ICustomNode';
import { IObfuscator } from './interfaces/IObfuscator';
import { IOptions } from './interfaces/IOptions';
import { IStackTraceData } from './interfaces/stack-trace-analyzer/IStackTraceData';
import { AppendState } from './enums/AppendState';
import { NodeType } from './enums/NodeType';
import { CatchClauseObfuscator } from './node-obfuscators/CatchClauseObfuscator';
import { ConsoleOutputNodesGroup } from './node-groups/ConsoleOutputNodesGroup';
import { DebugProtectionNodesGroup } from './node-groups/DebugProtectionNodesGroup';
import { DomainLockNodesGroup } from './node-groups/DomainLockNodesGroup';
import { FunctionDeclarationObfuscator } from './node-obfuscators/FunctionDeclarationObfuscator';
import { FunctionObfuscator } from './node-obfuscators/FunctionObfuscator';
import { LabeledStatementObfuscator } from './node-obfuscators/LabeledStatementObfuscator';
import { LiteralObfuscator } from './node-obfuscators/LiteralObfuscator';
import { MemberExpressionObfuscator } from './node-obfuscators/MemberExpressionObfuscator';
import { MethodDefinitionObfuscator } from './node-obfuscators/MethodDefinitionObfuscator';
import { Node } from './node/Node';
import { NodeUtils } from './node/NodeUtils';
import { ObjectExpressionObfuscator } from './node-obfuscators/ObjectExpressionObfuscator';
import { SelfDefendingNodesGroup } from './node-groups/SelfDefendingNodesGroup';
import { StackTraceAnalyzer } from './stack-trace-analyzer/StackTraceAnalyzer';
import { StringArrayNodesGroup } from './node-groups/StringArrayNodesGroup';
import { VariableDeclarationObfuscator } from './node-obfuscators/VariableDeclarationObfuscator';
export class Obfuscator implements IObfuscator {
/**
* @type {TNodeGroup[]}
*/
private static nodeGroups: TNodeGroup[] = [
DomainLockNodesGroup,
SelfDefendingNodesGroup,
ConsoleOutputNodesGroup,
DebugProtectionNodesGroup,
StringArrayNodesGroup
];
/**
* @type {Map<string, TNodeObfuscator[]>}
*/
private static nodeObfuscators: Map <string, TNodeObfuscator[]> = new Map <string, TNodeObfuscator[]> ([
[NodeType.ArrowFunctionExpression, [FunctionObfuscator]],
[NodeType.ClassDeclaration, [FunctionDeclarationObfuscator]],
[NodeType.CatchClause, [CatchClauseObfuscator]],
[NodeType.FunctionDeclaration, [
FunctionDeclarationObfuscator,
FunctionObfuscator
]],
[NodeType.FunctionExpression, [FunctionObfuscator]],
[NodeType.MemberExpression, [MemberExpressionObfuscator]],
[NodeType.MethodDefinition, [MethodDefinitionObfuscator]],
[NodeType.ObjectExpression, [ObjectExpressionObfuscator]],
[NodeType.VariableDeclaration, [VariableDeclarationObfuscator]],
[NodeType.LabeledStatement, [LabeledStatementObfuscator]],
[NodeType.Literal, [LiteralObfuscator]]
]);
/**
* @type {Map<string, AbstractCustomNode>}
*/
private customNodes: Map <string, ICustomNode> = new Map <string, ICustomNode> ();
/**
* @type {IOptions}
*/
private options: IOptions;
/**
* @param options
*/
constructor (options: IOptions) {
this.options = options;
}
/**
* @param node
* @returns {ESTree.Node}
*/
public obfuscateNode (node: ESTree.Program): ESTree.Node {
if (Node.isProgramNode(node) && !node.body.length) {
return node;
}
NodeUtils.parentize(node);
const stackTraceData: IStackTraceData[] = new StackTraceAnalyzer(node.body).analyze();
this.initializeCustomNodes(stackTraceData);
this.beforeObfuscation(node);
this.obfuscate(node);
this.afterObfuscation(node);
return node;
}
/**
* @param astTree
*/
private afterObfuscation (astTree: ESTree.Node): void {
this.customNodes.forEach((node: ICustomNode) => {
if (node.getAppendState() === AppendState.AfterObfuscation) {
node.appendNode(astTree);
}
});
}
/**
* @param astTree
*/
private beforeObfuscation (astTree: ESTree.Node): void {
this.customNodes.forEach((node: ICustomNode) => {
if (node.getAppendState() === AppendState.BeforeObfuscation) {
node.appendNode(astTree);
}
});
};
/**
* @param stackTraceData
*/
private initializeCustomNodes (stackTraceData: IStackTraceData[]): void {
let customNodes: [string, ICustomNode][] = [];
Obfuscator.nodeGroups.forEach((nodeGroupConstructor: TNodeGroup) => {
const nodeGroupNodes: Map <string, ICustomNode> | undefined = new nodeGroupConstructor(
stackTraceData, this.options
).getNodes();
if (!nodeGroupNodes) {
return;
}
customNodes.push(...nodeGroupNodes);
});
this.customNodes = new Map <string, ICustomNode> (customNodes);
}
/**
* @param node
* @param parentNode
*/
private initializeNodeObfuscators (node: ESTree.Node, parentNode: ESTree.Node): void {
let nodeObfuscators: TNodeObfuscator[] | undefined = Obfuscator.nodeObfuscators.get(node.type);
if (!nodeObfuscators) {
return;
}
nodeObfuscators.forEach((obfuscator: TNodeObfuscator) => {
new obfuscator(this.customNodes, this.options).obfuscateNode(node, parentNode);
});
}
/**
* @param node
*/
private obfuscate (node: ESTree.Node): void {
estraverse.traverse(node, {
enter: (node: ESTree.Node, parentNode: ESTree.Node): void => {
this.initializeNodeObfuscators(node, parentNode);
}
});
}
}
|