【未解决】搞懂google翻译网页源码内部中生成tk参数的逻辑

折腾：

【未解决】Python代码模拟google翻译把中文翻译为英文

期间，本以为已经写好模拟google翻译的python代码了。

结果换了个语言，换了要翻译的内容，结果发现tk值就变了，旧tk值就无效了。

所以只能想办法搞清楚生成tk参数的逻辑，才能用代码去模拟。

要翻译内容：test translate logic

英文-》中文

此时tk值：389397.220291

那接着去分析，何处生成这个值的

很明显，只能搜出一个，也就是之前知道的url：

1	`https://translate.google.cn/translate_a/single?client=webapp&sl=en&tl=zh-CN&hl=zh-CN&dt=at&dt=bd&dt=ex&dt=ld&dt=md&dt=qca&dt=rw&dt=rm&dt=ss&dt=t&pc=1&otf=1&ssel=0&tsel=0&kc=1&tk=389397.220291&q=test%20translate%20logic`

即：

https://translate.google.cn/translate_a/single

没啥帮助，不知道具体哪里生成的。

看来要去找tk了。

结果搜出来东西太多。

搜 tk=

搜出来不是太多

去分别看看

https://apis.google.com/_/scs/abc-static/_/js/k=gapi.gapi.en.7kWSr24wXFc.O/m=gapi_iframes,googleapis_client,plusone/rt=j/sv=1/d=1/ed=1/rs=AHpOoo-i9r7IbCTUQfJ0v-FPhRKRS8aihQ/cb=gapi.loaded_0
 
var ok,nk,uk,vk,pk,sk,qk,wk,rk;_.tk=function(){if(nk){var a=new _.ke.Uint32Array(1);ok.getRandomValues(a);a=Number("0."+a[0])}else a=pk,a+=parseInt(qk.substr(0,20),16),qk=rk(qk),a/=sk+Math.pow(16,20);return a};ok=_.ke.crypto;nk=!1;uk=0;vk=0;pk=1;sk=0;qk="";wk=function(a){a=a||_.ke.event;var b=a.screenX+a.clientX<<16;b+=a.screenY+a.clientY;b*=(new Date).getTime()%1E6;pk=pk*b%sk;0<uk&&++vk==uk&&_.ye(_.ke,"mousemove",wk,"remove","de")};rk=function(a){var b=new _.Kh;b.IE(a);return b.Pg()};

-》有点可能，像function去计算出来的？

以及：

https://www.gstatic.cn/inputtools/js/ita/inputtools_1.js
 
a.metaKey;this.G=lk?a.metaKey:a.ctrlKey;this.B=a;a.defaultPrevented&&this.preventDefault()}},pk=function(a){return(nk?0==a.B.button:a.type==n?!0:!!(a.B.button&ok[0]))&&!(N&&lk&&a.ctrlKey)},rk=function(a,b,c,d,e){this.listener=a;this.A=null;this.src=b;this.type=c;this.capture=!!d;this.ma=e;this.key=++qk;this.hd=this.wd=!1},sk=function(a){a.hd=!0;a.listener=null;a.A=null;a.src=null;a.ma=null},tk=function(a){this.src=a;this.A={};this.B=0},vk=function(a,b,c,d,e,g){var h=b.toString();b=a.A[h];b||(b=a.A[h]=

不是太像：只是赋值

https://www.gstatic.com/og/_/js/k=og.qtm.en_US.D7UMNFi9kB0.O/rt=j/m=q_d,qmd,qcwid,qmutsd,qapid/exm=qaaw,qabr,qadd,qaid,qalo,qebr,qein,qhaw,qhbr,qhch,qhga,qhid,qhin,qhlo,qhmn,qhpc,qhpr,qhsf,qhtb,qhtt/d=1/ed=1/rs=AA2YrTt_kg-hfAJB9XubfvSn4sJw-qSM8A
 
var sk,uk,wk,xk,zk,Ak,Ck,Dk,Ik;sk=function(a){if(_.Aa(a)){for(var c=Array(a.length),d=0;d<a.length;d++){var e=a[d];null!=e&&(c[d]="object"==typeof e?sk(e):e)}return c}if(_.sc&&a instanceof Uint8Array)return new Uint8Array(a);c={};for(d in a)e=a[d],null!=e&&(c[d]="object"==typeof e?sk(e):e);return c};_.tk=function(a){return new a.constructor(sk(a.tb()))};uk=function(a,c){a.f=c;a.Hb&&a.qc?(a.stop(),a.start()):a.Hb&&a.stop()};

也有点像：

1	`_.tk=function(a){return` `new a.constructor(sk(a.tb()))};`

-》调用别的函数

https://translate.google.cn/translate/releases/twsfe_w_20191118_RC00/r/js/translate_m_zh-CN.js
 
new Bi(this.g.Y());Mg(this,this.b);G(this.b,"tick",Ib(tk(this,m)),!1,this);this.w=new Bi(6E5);Mg(this,this.w);G(this.w,"tick",Ib(tk(this,m)),!1,this);this.C||this.w.start();this.Z||(G(Wf(),"beforeunload",this.o,!1,this),G(Wf(),"unload",this.o,!1,this),G(document,"pagehide",this.o,!1,this))};t(uk,J);var tk=function(a,b){return b?function(){b().then(a.flush.bind(a))}:a.flush};uk.prototype.T=function(){this.o();uk.D.T.call(this)};
 
sr:["sr-t-i0-handwrit"],su:["su-t-i0-handwrit"],sv:["sv-t-i0-handwrit"],sw:["sw-t-i0-handwrit"],ta:["ta-t-i0-handwrit"],te:["te-t-i0-handwrit"],tg:["tg-t-i0-handwrit"],th:["th-t-i0-handwrit"],tl:["fil-t-i0-handwrit"],tr:["tr-t-i0-handwrit"],uk:["uk-t-i0-handwrit"],ur:["ur-t-i0-handwrit"],uz:["uz-t-i0-handwrit"],vi:["vi-t-i0-handwrit"],xh:["xh-t-i0-handwrit"],"zh-CN":["zh-t-i0-handwrit"],zu:["zu-t-i0-handwrit"]};var Lk=function(a){hf(this,a,-1,null)};t(Lk,df);Lk.prototype.Nd=function(){return jf(this,1)};Lk.prototype.fb=function(){return jf(this,4)};var Mk=function(a){hf(this,a,-1,null)};t(Mk,df);var Ok=function(a){hf(this,a,-1,null)};t(Ok,df);var Pk=function(a){hf(this,a,-1,null)};t(Pk,df);var Rk=function(a){hf(this,a,-1,Qk)};t(Rk,df);var Qk=[1];var Sk=function(a){hf(this,a,-1,null)};t(Sk,df);var Tk=function(a){hf(this,a,-1,null)};t(Tk,df);var Uk=function(a){hf(this,a,-1,null)};t(Uk,df);var Vk=function(a){hf(this,a,-1,null)};t(Vk,df);var Wk=function(a){hf(this,a,-1,null)};t(Wk,df);Wk.prototype.Ua=function(){return jf(this,1)};var Xk=function(a){hf(this,a,-1,null)};t(Xk,df);var Zk=function(a){hf(this,a,-1,Yk)};t(Zk,df);var Yk=[1,3,4];var $k=function(a){hf(this,a,-1,null)};t($k,df);var al=function(){var a=new $k;return A(a,1,1)};var bl=function(a){hf(this,a,-1,null)};t(bl,df);bl.prototype.Kb=function(){return jf(this,1)};var cl=function(a){hf(this,a,-1,null)};t(cl,df);var el=function(a){hf(this,a,-1,dl)};t(el,df);var dl=[1];el.prototype.fb=function(){return jf(this,5)};var fl=function(a){hf(this,a,-1,null)};t(fl,df);var hl=function(a){hf(this,a,-1,gl)};t(hl,df);var gl=[2];var il=function(a){hf(this,a,-1,null)};t(il,df);var jl=function(){var a=new il;return A(a,1,3)};var kl=function(a){hf(this,a,-1,null)};t(kl,df);var ll=function(a){hf(this,a,-1,null)};t(ll,df);ll.prototype.qf=function(){return jf(this,4)};ll.prototype.Li=function(){return null!=jf(this,4)};var ml=function(a){hf(this,a,-1,null)};t(ml,df);var ol=function(a){hf(this,a,-1,nl)};t(ol,df);var nl=[3,4];var ql=function(a){hf(this,a,-1,pl)};t(ql,df);var pl=[3];ql.prototype.Be=function(){return jf(this,1)};var sl=function(a){hf(this,a,-1,rl)};t(sl,df);var rl=[2];var ul=function(a){hf(this,a,-1,tl)};t(ul,df);var tl=[26,80];ul.prototype.Ce=function(){return jf(this,1)};ul.prototype.Be=function(){return jf(this,53)};var vl=function(){this.h=0;this.G=this.o=this.g=this.c=this.w="";this.m=this.b=this.C=0;Fk.M();this.a=null},wl={bh:27,btn:1,clks:2,clkt:3,pb:4,sel:5,selalt:6,tws_confirm:7,tws_lsugg:8,tws_revert:9,tws_spell:10,is:11};Ga(vl);var xl=function(){var a=DATA.DisplayLanguage,b=vl.M();b.h=2;b.w=a;return b},yl=function(a,b){"string"===typeof b&&(b=wl[b],b=null!=b?b:0);a.C=b},zl=function(a,b){if("string"===typeof b){var c=0;0<=b.indexOf("-k0-")?c=2:Kk(b)?c=1:Jk(b)&&(c=5);b=c}a.b=b};
 
dF.prototype.ub=function(a,b,c,d,e,f){var g={cm:"g"};null!=b&&"all"!=b&&(g.sl=b);null!=c&&"all"!=c&&(g.tl=c);null!=d&&""!=d&&(g.q=d);null!=e&&""!=e&&(g.utrans=e);null!=f&&"0"!=f&&(g.od=f);""!=this.a&&(g.tk=this.a,this.a="");eF(this,"/translate_a/sg?client=webapp&"+Gj(g),a,"GET",void 0,{"cache-control":"no-cache"})};
 
R(b.SHOW_MORE)+"</div><div class='tlid-show-less-link truncate-link' style='display:none'>"+R(b.SHOW_LESS)+"</div></div>")},tK=function(a){var b=a.Qa,c="<div class='";a=a.jf;for(var d=a.length,e=0;e<d;e++)c+=S(a[e])+" ";c+="ttsbutton jfk-button-flat source-or-target-footer-button' aria-label='"+S(b.LISTEN)+"' data-tooltip='"+S(b.LISTEN)+"'><div class='jfk-button-img'></div></div>";return Q(c)},rK=function(a){var b=a.className,c=a.identifier,d=a.Si;a=a.selected;b='<div class="'+S(b)+'-selector lang_list"><div class="lang-btn"><a class="ls-select new-ls-select '+
 
LK.prototype.ia=function(){var a=this.a;a.mh=0;Xv(a);a=B("text-dummy",this.v);var b=B("text-dummy",this.v);this.a.Y().endsWith("\n")?E(b,this.a.Y()+"\n"):E(b,this.a.Y());Eg(a)?(b=Kq(a),a=(a.scrollHeight-b.top-b.bottom)/32):a=1;V(this.gb,"small-font",a>OK["small-font"]);Xv(this.a)};var TK=function(a){J.call(this);this.v=a;this.a=null;this.o=this.h="";this.g=this.c=!1};ka(TK,J);TK.prototype.w=function(a){null!=a&&null!=a.reset&&(this.c=a.reset,this.h=a.sourceLanguageCode||"",this.o=a.targetLanguageCode||"");this.dispatchEvent("close_requested")};TK.prototype.m=function(a){null!=a&&a.available&&!this.g&&(this.dispatchEvent("tasks_available"),this.g=!0)};TK.prototype.b=function(){return!0};var UK=function(a,b,c,d,e,f){var g=ov();pF.call(this,a,c,d,e,g);this.O=f;this.w=b};ka(UK,pF);UK.prototype.m=function(){this.h.style.left=Math.round(this.coords[0])+"px";this.h.style.bottom=Math.round(this.coords[1])+"px"};UK.prototype.g=function(){(new sF(this.w,this.O)).play()};var VK=function(){X.call(this);this.h=null};ka(VK,X);VK.prototype.b=function(){return""};VK.prototype.setVisible=function(a,b){var c=this,d=this.j();if(Aq(d)!=a){var e=B(this.b(),this.j());a?(eq(d,{opacity:1}),eq(e,{opacity:0}),W(d,!0),(new UK(d,e,WK,XK,225,100)).play(),b&&(this.h=window.setTimeout(function(){return c.setVisible(!1)},b))):((new tF(d,195)).play(),this.h&&(window.clearTimeout(this.h),this.h=null))}};var WK=[0,-48],XK=[0,0];var YK=function(){VK.call(this)};ka(YK,VK);YK.prototype.b=function(){return"ntfcn-ctr"};YK.prototype.Xc=function(a){if(!a||"DIV"!=a.tagName)return!1;a=B("ntfcn-ctr",a);return a&&"DIV"==a.tagName?(a=B("snck-msg",a))&&"SPAN"==a.tagName?!0:!1:!1};YK.prototype.aa=function(){};var ZK=function(){};ka(ZK,zr);ZK.prototype.Zc=function(a){return a&&"SPAN"==a.tagName?!0:!1};var $K=function(a,b,c,d){VK.call(this);this.m=a;this.c=b;this.R=c;this.N=d;this.W=new yv("######");this.V=new ZF(DATA.Messages.CHARACTER_LIMIT);this.X=new ZF(DATA.Messages.TRANSLATE_NEXT);this.g="";this.w=null;this.C=new Im;this.C.c="webapp";this.F=K.M()};ka($K,VK);$K.prototype.b=function(){return"ovfl-ctr"};$K.prototype.Xc=function(a){return a&&"DIV"==a.tagName?(a=B(this.b(),a))&&B("snck-msg",a)&&B("ovfl-xlt",a)?!0:!1:!1};