From 794f62ae9369752e478913f65974cb785d1ae0dd Mon Sep 17 00:00:00 2001
From: chaxus <nouo18@163.com>
Date: Thu, 1 Feb 2024 16:49:39 +0800
Subject: [PATCH] feat: add fingerprinting funciton: (#211)

---
 packages/ranuts/src/utils/index.ts | 153 +++++++++++++++++++++++++++++
 packages/ranuts/typings.d.ts       |   1 +
 2 files changed, 154 insertions(+)

diff --git a/packages/ranuts/src/utils/index.ts b/packages/ranuts/src/utils/index.ts
index 680439d7b..a41e3e48c 100644
--- a/packages/ranuts/src/utils/index.ts
+++ b/packages/ranuts/src/utils/index.ts
@@ -968,3 +968,156 @@ export function mathjs(a: number, type: string, b: number): ComputeNumberResult
     },
   };
 }
+
+const fingerprinting = () => {
+  // userAgent(用户代理) 浏览器的语言 设备能够支持的最大同时触摸的点数 可用的逻辑处理器核心数
+  const { userAgent, language, maxTouchPoints, hardwareConcurrency } = navigator;
+  const { width, height, colorDepth } = screen;
+  // 格林威治时间和本地时间之间的时差
+  const timezone = new Date().getTimezoneOffset();
+};
+/**
+ * @description: 获取地区经纬度（会弹出提示让用户授权）
+ * @return {*}
+ */
+const getRegionalLatitudeAndLongitude = () => {
+  return new Promise((resolve, reject) => {
+    navigator.geolocation.getCurrentPosition(
+      function (position) {
+        resolve(position);
+      },
+      function (error) {
+        reject(error);
+        // error.code can be:
+        //   0: unknown error
+        //   1: permission denied
+        //   2: position unavailable (error response from location provider)
+        //   3: timed out
+      },
+    );
+  });
+};
+
+export const webglVendor = (): { vendor: string; renderer: string } | null => {
+  const glCanvas = document.createElement('canvas');
+  const gl = glCanvas.getContext('webgl2');
+  function getHardwareInfo(gl: WebGL2RenderingContext) {
+    const debugInfo = gl.getExtension('WEBGL_debug_renderer_info');
+    if (!debugInfo) {
+      return null;
+    }
+    const vendor = gl.getParameter(debugInfo.UNMASKED_VENDOR_WEBGL);
+    const renderer = gl.getParameter(debugInfo.UNMASKED_RENDERER_WEBGL);
+    return {
+      vendor: vendor,
+      renderer: renderer,
+    };
+  }
+  if (gl) {
+    return getHardwareInfo(gl);
+  }
+  return null;
+};
+
+export const canvasVendor = (): string | null => {
+  const outScreenCanvas = document.createElement('canvas');
+  const ctx = outScreenCanvas.getContext('2d');
+  const txt = 'BrowserLeaks,com <canvas> 1.0';
+  if (!ctx) return null;
+  ctx.textBaseline = 'top';
+  ctx.font = "14px 'Arial'";
+  ctx.textBaseline = 'alphabetic';
+  ctx.fillStyle = '#f60';
+  ctx.fillRect(125, 1, 62, 20);
+  ctx.fillStyle = '#069';
+  ctx.fillText(txt, 2, 15);
+  ctx.fillStyle = 'rgba(102, 204, 0, 0.7)';
+  ctx.fillText(txt, 4, 17);
+  const canvasImageData = outScreenCanvas.toDataURL();
+  return canvasImageData;
+};
+
+enum AudioCompressor {
+  THRESHOLD = 'threshold',
+  KNEE = 'knee',
+  RATIO = 'ratio',
+  REDUCTION = 'reduction',
+  ATTACK = 'attack',
+  RELEASE = 'release',
+}
+/**
+ * @description: 音频指纹，1.生成音频信息流(三角波)，对其进行FFT变换，计算SHA值作为指纹。2.生成音频信息流（正弦波），进行动态压缩处理，计算MD5值。
+ */
+export const audioVendor = (): Promise<string> => {
+
+  return new Promise((resolve, reject) => {
+    const each = function (
+      obj: Array<[AudioCompressor, number]>,
+      iterator: (value: [AudioCompressor, number], index: number, array: Array<[AudioCompressor, number]>) => void,
+    ) {
+      if (Array.prototype.forEach && obj.forEach === Array.prototype.forEach) {
+        obj.forEach(iterator);
+      } else if (obj.length === +obj.length) {
+        for (let i = 0, l = obj.length; i < l; i++) {
+          iterator(obj[i], i, obj);
+        }
+      } else {
+        for (const key in obj) {
+          if (Object.prototype.hasOwnProperty.call(obj, key)) {
+            iterator(obj[key], Number(key), obj);
+          }
+        }
+      }
+    };
+    const AudioContext = window.OfflineAudioContext || window.webkitOfflineAudioContext;
+    const context = new AudioContext(1, 44100, 44100);
+    const oscillator = context.createOscillator();
+    oscillator.type = 'triangle';
+    oscillator.frequency.setValueAtTime(10000, context.currentTime);
+    const compressor = context.createDynamicsCompressor();
+    each(
+      [
+        [AudioCompressor.THRESHOLD, -50],
+        [AudioCompressor.KNEE, 40],
+        [AudioCompressor.RATIO, 12],
+        [AudioCompressor.REDUCTION, -20],
+        [AudioCompressor.ATTACK, 0],
+        [AudioCompressor.RELEASE, 0.25],
+      ],
+      function (item: [AudioCompressor, number]) {
+        if (compressor[item[0]] && typeof compressor[item[0]] !== 'number') {
+          const { setValueAtTime } = compressor[item[0]] as AudioParam;
+          setValueAtTime(item[1], context.currentTime);
+        }
+      },
+    );
+    oscillator.connect(compressor);
+    compressor.connect(context.destination);
+    oscillator.start(0);
+    context.startRendering();
+    const audioTimeoutId = setTimeout(function () {
+      context.oncomplete = function () {};
+      reject('audioTimeout');
+      return 'audioTimeout';
+    }, 100);
+    context.oncomplete = (event) => {
+      try {
+        clearTimeout(audioTimeoutId);
+        const result = event.renderedBuffer
+          .getChannelData(0)
+          .slice(4500, 5000)
+          .reduce(function (acc, val) {
+            return acc + Math.abs(val);
+          }, 0)
+          .toString();
+        oscillator.disconnect();
+        compressor.disconnect();
+        resolve(result);
+        return result;
+      } catch (error) {
+        reject(error);
+        return;
+      }
+    };
+  });
+};
diff --git a/packages/ranuts/typings.d.ts b/packages/ranuts/typings.d.ts
index dcbca22b6..150fff5b9 100644
--- a/packages/ranuts/typings.d.ts
+++ b/packages/ranuts/typings.d.ts
@@ -24,6 +24,7 @@ interface Window {
     cname: string;
   };
   ranlog: boolean | undefined;
+  webkitOfflineAudioContext: OfflineAudioContext;
 }
 
 declare namespace NodeJS {