背景
之前爬虫 驱动个selenium基本上就可以了.
但是现在各种检测浏览器环境...特别是不熟悉 js 的同学就更烦了
本文是直接把seleniumpyppeteer 以及正常打开浏览器 的环境差异直接列出来
这样你就可以更愉快的爬虫了（可以直接把环境全部模拟上,或者大概看看有啥,下次看人家混淆 js 的时候心里有个数）
原理
就是遍历 window 对象,把属性全部保存成 json 文件
代码语言：javascript复制function recur(obj) {
var result = {},
_tmp;
for (var i in obj) {
// enabledPlugin is too nested, also skip functions
if (i === 'enabledPlugin' || typeof obj[i] === 'function') {
continue;
} else if (typeof obj[i] === 'object') {
// get props recursively
_tmp = recur(obj[i]);
// if object is not {}
if (Object.keys(_tmp).length) {
result[i] = _tmp;
}
} else {
// string, number or boolean
result[i] = obj[i];
}
}
return result;
}
function go() {
var j = new Object();
var propertys = Object.getOwnPropertyNames(window);
propertys.forEach(element => {
if (element === 'globalThis' ||
element === 'Illegal' ||
element === 'parent' ||
element === 'top' ||
element === 'frames' ||
element === 'self' ||
element === 'window' ||
element === 'document'
) {} else {
eval("j." element "=recur(window." element ")")
}
});
console.log(JSON.stringify(j))
}
go()然后分别正常打开,selenium打开，pyppeteer 打开
再查看方法的差异
操作
获取 json
下载本项目
启动本地 server python -m http.server 80
打开 http://localhost/
正常打开最好是无痕模式,因为浏览器扩展可能会导致多出很多浏览器扩展的属性
打开网页以后 -> 打开开发者工具 -> 切换到 console
然后点击 copy,粘贴 json 到对应的文件内
seleniumpyppeteer 打开可以参考getEnvironment.py
比较
直接运行 python diff.py就可以了.
下面可以看到
差异有
root['navigator']['webdriver'], root['clientInformation']['webdriver'] 等等
这个算是目前检测用的比较多的,还有一些其他的可以自己运行看看
代码语言：javascript复制selenuim 与正常环境的差异
############################################################
{ 'dictionary_item_added': [root['cdc_adoQpoasnfa76pfcZLmcfl_Symbol'], root['cdc_adoQpoasnfa76pfcZLmcfl_Array'], root['cdc_adoQpoasnfa76pfcZLmcfl_Promise'], root['navigator']['webdriver'], root['clientInformation']['webdriver']],
'dictionary_item_removed': [root['chrome']['runtime'], root['navigator']['doNotTrack'], root['navigator']['languages']['2'], root['clientInformation']['doNotTrack'], root['clientInformation']['languages']['2']],
'type_changes': { "root['visualViewport']['height']": { 'new_type': <class 'int'>,
'new_value': 948,
'old_type': <class 'float'>,
'old_value': 751.2000122070312}},
'values_changed': { "root['clientInformation']['connection']['downlink']": { 'new_value': 1.3,
'old_value': 1.45},
"root['screen']['availHeight']": { 'new_value': 1027,
'old_value': 1050},
"root['screen']['availTop']": { 'new_value': 23,
'old_value': 0},
"root['visualViewport']['width']": { 'new_value': 840,
'old_value': 1344}}}
pyppeteer 与正常环境的差异
############################################################
{ 'dictionary_item_added': [root['WebKitAnimationEvent'], root['RTCRtpContributingSource'], root['SVGDiscardElement'], root['MediaCapabilitiesInfo'], root['WebKitTransitionEvent'], root['chrome']['webstore'], root['navigator']['webdriver'], root['clientInformation']['webdriver']],
'dictionary_item_removed': [root['BackgroundFetchManager'], root['RTCPeerConnectionIceErrorEvent'], root['WritableStreamDefaultWriter'], root['XRDOMOverlayState'], root['TrustedTypePolicy'], root['GeolocationCoordinates'], root['External'], root['ClipboardItem'], root['XRTransientInputHitTestSource'], root['XRRay'], root['PerformanceElementTiming'], root['XRViewerPose'], root['RTCError'], root['TextDecoderStream'], root['BackgroundFetchRegistration'], root['TrustedHTML'], root['onpointerrawupdate'], root['XRSession'], root['XRSessionEvent'], root['XRReferenceSpaceEvent'], root['XRReferenceSpace'], root['BarcodeDetector'], root['SubmitEvent'], root['AnimationEffect'], root['PeriodicSyncManager'], root['onformdata'], root['onselectstart'], root['TrustedScriptURL'], root['XRRenderState'], root['SpeechSynthesisErrorEvent'], root['RTCIceTransport'], root['TextEncoderStream'], root['MediaSession'], root['XRHitTestSource'], root['GeolocationPositionError'], root['XRPose'], root['XRView'], root['ElementInternals'], root['XRInputSourceArray'], root['XRInputSourceEvent'], root['XRFrame'], root['DecompressionStream'], root['TrustedScript'], root['Geolocation'], root['TrustedTypePolicyFactory'], root['XRBoundedReferenceSpace'], root['FeaturePolicy'], root['PerformanceEventTiming'], root['LargestContentfulPaint'], root['VideoPlaybackQuality'], root['onselectionchange'], root['XRSpace'], root['XRInputSourcesChangeEvent'], root['GeolocationPosition'], root['XRViewport'], root['XRHitTestResult'], root['queueMicrotask'], root['XRWebGLLayer'], root['DeviceMotionEventRotationRate'], root['ReadableStreamDefaultReader'], root['BackgroundFetchRecord'], root['LayoutShift'], root['DeviceMotionEventAcceleration'], root['MediaMetadata'], root['XRTransientInputHitTestResult'], root['PaymentMethodChangeEvent'], root['trustedTypes'], root['FragmentDirective'], root['UserActivation'], root['RTCErrorEvent'], root['CompressionStream'], root['XRRigidTransform'], root['Animation'], root['RTCSctpTransport'], root['XRInputSource'], root['FormDataEvent'], root['XRSystem'], root['EnterPictureInPictureEvent'], root['KeyframeEffect'], root['RTCDtlsTransport'], root['chrome']['runtime'], root['SVGFEBlendElement']['SVG_FEBLEND_MODE_OVERLAY'], root['SVGFEBlendElement']['SVG_FEBLEND_MODE_HUE'], root['SVGFEBlendElement']['SVG_FEBLEND_MODE_SATURATION'], root['SVGFEBlendElement']['SVG_FEBLEND_MODE_COLOR_DODGE'], root['SVGFEBlendElement']['SVG_FEBLEND_MODE_LUMINOSITY'], root['SVGFEBlendElement']['SVG_FEBLEND_MODE_EXCLUSION'], root['SVGFEBlendElement']['SVG_FEBLEND_MODE_DIFFERENCE'], root['SVGFEBlendElement']['SVG_FEBLEND_MODE_SOFT_LIGHT'], root['SVGFEBlendElement']['SVG_FEBLEND_MODE_HARD_LIGHT'], root['SVGFEBlendElement']['SVG_FEBLEND_MODE_COLOR_BURN'], root['SVGFEBlendElement']['SVG_FEBLEND_MODE_COLOR'], root['navigator']['userActivation'], root['navigator']['doNotTrack'], root['navigator']['mediaSession'], root['navigator']['languages']['2'], root['clientInformation']['userActivation'], root['clientInformation']['doNotTrack'], root['clientInformation']['mediaSession'], root['clientInformation']['languages']['2'], root['PerformanceObserver']['supportedEntryTypes']],
'type_changes': { "root['visualViewport']['height']": { 'new_type': <class 'int'>,
'new_value': 600,
'old_type': <class 'float'>,
'old_value': 751.2000122070312}},
'values_changed': { "root['clientInformation']['appVersion']": { 'new_value': '5.0 '
'(Macintosh; '
'Intel '
'Mac '
'OS '
'X '
'10_15_4) '
'AppleWebKit/537.36 '
'(KHTML, '
'like '
'Gecko) '
'Chrome/71.0.3542.0 '
'Safari/537.36',
'old_value': '5.0 '
'(Macintosh; '
'Intel '
'Mac '
'OS '
'X '
'10_15_4) '
'AppleWebKit/537.36 '
'(KHTML, '
'like '
'Gecko) '
'Chrome/83.0.4103.61 '
'Safari/537.36'},
"root['clientInformation']['connection']['rtt']": { 'new_value': 100,
'old_value': 150},
"root['clientInformation']['plugins']['0']['name']": { 'new_value': 'Chromium '
'PDF '
'Plugin',
'old_value': 'Chrome '
'PDF '
'Plugin'},
"root['clientInformation']['plugins']['1']['name']": { 'new_value': 'Chromium '
'PDF '
'Viewer',
'old_value': 'Chrome '
'PDF '
'Viewer'},
"root['clientInformation']['userAgent']": { 'new_value': 'Mozilla/5.0 '
'(Macintosh; '
'Intel '
'Mac '
'OS '
'X '
'10_15_4) '
'AppleWebKit/537.36 '
'(KHTML, '
'like '
'Gecko) '
'Chrome/71.0.3542.0 '
'Safari/537.36',
'old_value': 'Mozilla/5.0 '
'(Macintosh; '
'Intel '
'Mac '
'OS '
'X '
'10_15_4) '
'AppleWebKit/537.36 '
'(KHTML, '
'like '
'Gecko) '
'Chrome/83.0.4103.61 '
'Safari/537.36'},
"root['console']['memory']['jsHeapSizeLimit']": { 'new_value': 2330000000,
'old_value': 3760000000},
"root['history']['length']": { 'new_value': 2,
'old_value': 3},
"root['location']['href']": { 'new_value': 'http://localhost/',
'old_value': 'http://localhost/t.html'},
"root['location']['pathname']": { 'new_value': '/',
'old_value': '/t.html'},
"root['navigator']['appVersion']": { 'new_value': '5.0 '
'(Macintosh; '
'Intel '
'Mac '
'OS X '
'10_15_4) '
'AppleWebKit/537.36 '
'(KHTML, '
'like '
'Gecko) '
'Chrome/71.0.3542.0 '
'Safari/537.36',
'old_value': '5.0 '
'(Macintosh; '
'Intel '
'Mac '
'OS X '
'10_15_4) '
'AppleWebKit/537.36 '
'(KHTML, '
'like '
'Gecko) '
'Chrome/83.0.4103.61 '
'Safari/537.36'},
"root['navigator']['connection']['rtt']": { 'new_value': 100,
'old_value': 150},
"root['navigator']['plugins']['0']['name']": { 'new_value': 'Chromium '
'PDF '
'Plugin',
'old_value': 'Chrome '
'PDF '
'Plugin'},
"root['navigator']['plugins']['1']['name']": { 'new_value': 'Chromium '
'PDF '
'Viewer',
'old_value': 'Chrome '
'PDF '
'Viewer'},
"root['screen']['availHeight']": { 'new_value': 1027,
'old_value': 1050},
"root['screen']['availTop']": { 'new_value': 23,
'old_value': 0},
"root['screen']['colorDepth']": { 'new_value': 24,
'old_value': 30},
"root['screen']['orientation']['type']": { 'new_value': 'portrait-primary',
'old_value': 'landscape-primary'},
"root['screen']['pixelDepth']": { 'new_value': 24,
'old_value': 30},
"root['visualViewport']['width']": { 'new_value': 800,
'old_value': 1344}}}项目地址
https://github.com/jin10086/browser-environment-test
