如何从 Chrome 缓存中恢复页面内容？

Question 1

chrome://cache/列出缓存的项目。在 Firefox 中，它是about:cache。

从那里，您可以搜索.html网站。

将 URL 复制到您的多功能框，然后打开它。

Answer

chrome://cache/列出缓存的项目。在 Firefox 中，它是about:cache。

从那里，您可以搜索.html网站。

将 URL 复制到您的多功能框，然后打开它。

Question 2

如果您将 Chromium 转发到“chrome://view-http-cache/...”且不显示压缩的页面数据，您可以尝试以下方法恢复单个文件 - 请注意，依赖文件（图像、包含的脚本/css）不会自动恢复。

在“chrome://view-http-cache/...”中：

点击“F12”
进入“控制台”
复制/粘贴以下代码并按回车键

对于 Chrome，请使用下载链接下载扩展文件

var log = function(target, type, msg) {
    var elem = window.document.createElement('div');
    elem.innerHTML = new Date()+"<br /> - "+type+": "+msg+"<br />";
    target.appendChild(elem);
}

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e;f--,c+=a[o++]<<h,h+=8}if(_e<16)c>>>=me,h-=me,i.lens[i.have++]=_e;else{if(16===_e){for(Ee=me+2;h<Ee;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}if(c>>>=me,h-=me,0===i.have){e.msg="invalid bit length repeat",i.mode=ce;break}xe=i.lens[i.have-1],m=3+(3&c),c>>>=2,h-=2}else if(17===_e){for(Ee=me+3;h<Ee;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}c>>>=me,h-=me,xe=0,m=3+(7&c),c>>>=3,h-=3}else{for(Ee=me+7;h<Ee;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}c>>>=me,h-=me,xe=0,m=11+(127&c),c>>>=7,h-=7}if(i.have+m>i.nlen+i.ndist){e.msg="invalid bit length repeat",i.mode=ce;break}for(;m--;)i.lens[i.have++]=xe}}if(i.mode===ce)break;if(0===i.lens[256]){e.msg="invalid code -- missing end-of-block",i.mode=ce;break}if(i.lenbits=9,Se={bits:i.lenbits},ye=x(S,i.lens,0,i.nlen,i.lencode,0,i.work,Se),i.lenbits=Se.bits,ye){e.msg="invalid literal/lengths set",i.mode=ce;break}if(i.distbits=6,i.distcode=i.distdyn,Se={bits:i.distbits},ye=x(E,i.lens,i.nlen,i.ndist,i.distcode,0,i.work,Se),i.distbits=Se.bits,ye){e.msg="invalid distances set",i.mode=ce;break}if(i.mode=ie,t===A)break e;case ie:i.mode=ne;case ne:if(f>=6&&l>=258){e.next_out=s,e.avail_out=l,e.next_in=o,e.avail_in=f,i.hold=c,i.bits=h,p(e,w),s=e.next_out,r=e.output,l=e.avail_out,o=e.next_in,a=e.input,f=e.avail_in,c=i.hold,h=i.bits,i.mode===X&&(i.back=-1);break}for(i.back=0;Be=i.lencode[c&(1<<i.lenbits)-1],me=Be>>>24,ke=Be>>>16&255,_e=65535&Be,!(me<=h);){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}if(ke&&0===(240&ke)){for(ge=me,ve=ke,pe=_e;Be=i.lencode[pe+((c&(1<<ge+ve)-1)>>ge)],me=Be>>>24,ke=Be>>>16&255,_e=65535&Be,!(ge+me<=h);){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}c>>>=ge,h-=ge,i.back+=ge}if(c>>>=me,h-=me,i.back+=me,i.length=_e,0===ke){i.mode=fe;break}if(32&ke){i.back=-1,i.mode=X;break}if(64&ke){e.msg="invalid literal/length code",i.mode=ce;break}i.extra=15&ke,i.mode=ae;case ae:if(i.extra){for(Ee=i.extra;h<Ee;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}i.length+=c&(1<<i.extra)-1,c>>>=i.extra,h-=i.extra,i.back+=i.extra}i.was=i.length,i.mode=re;case re:for(;Be=i.distcode[c&(1<<i.distbits)-1],me=Be>>>24,ke=Be>>>16&255,_e=65535&Be,!(me<=h);){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}if(0===(240&ke)){for(ge=me,ve=ke,pe=_e;Be=i.distcode[pe+((c&(1<<ge+ve)-1)>>ge)],me=Be>>>24,ke=Be>>>16&255,_e=65535&Be,!(ge+me<=h);){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}c>>>=ge,h-=ge,i.back+=ge}if(c>>>=me,h-=me,i.back+=me,64&ke){e.msg="invalid distance code",i.mode=ce;break}i.offset=_e,i.extra=15&ke,i.mode=oe;case oe:if(i.extra){for(Ee=i.extra;h<Ee;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}i.offset+=c&(1<<i.extra)-1,c>>>=i.extra,h-=i.extra,i.back+=i.extra}if(i.offset>i.dmax){e.msg="invalid distance too far back",i.mode=ce;break}i.mode=se;case se:if(0===l)break e;if(m=w-l,i.offset>m){if(m=i.offset-m,m>i.whave&&i.sane){e.msg="invalid distance too far back",i.mode=ce;break}m>i.wnext?(m-=i.wnext,k=i.wsize-m):k=i.wnext-m,m>i.length&&(m=i.length),we=i.window}else we=r,k=s-i.offset,m=i.length;m>l&&(m=l),l-=m,i.length-=m;do r[s++]=we[k++];while(--m);0===i.length&&(i.mode=ne);break;case fe:if(0===l)break e;r[s++]=i.length,l--,i.mode=ne;break;case le:if(i.wrap){for(;h<32;){if(0===f)break e;f--,c|=a[o++]<<h,h+=8}if(w-=l,e.total_out+=w,i.total+=w,w&&(e.adler=i.check=i.flags?v(i.check,r,w,s-w):g(i.check,r,w,s-w)),w=l,(i.flags?c:n(c))!==i.check){e.msg="incorrect data check",i.mode=ce;break}c=0,h=0}i.mode=de;case de:if(i.wrap&&i.flags){for(;h<32;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}if(c!==(4294967295&i.total)){e.msg="incorrect length check",i.mode=ce;break}c=0,h=0}i.mode=ue;case ue:ye=R;break e;case ce:ye=O;break e;case he:return I;case be:default:return C}return e.next_out=s,e.avail_out=l,e.next_in=o,e.avail_in=f,i.hold=c,i.bits=h,(i.wsize||w!==e.avail_out&&i.mode<ce&&(i.mode<le||t!==B))&&u(e,e.output,e.next_out,w-e.avail_out)?(i.mode=he,I):(b-=e.avail_in,w-=e.avail_out,e.total_in+=b,e.total_out+=w,i.total+=w,i.wrap&&w&&(e.adler=i.check=i.flags?v(i.check,r,w,e.next_out-w):g(i.check,r,w,e.next_out-w)),e.data_type=i.bits+(i.last?64:0)+(i.mode===X?128:0)+(i.mode===ie||i.mode===Q?256:0),(0===b&&0===w||t===B)&&ye===z&&(ye=T),ye)}function h(e){if(!e||!e.state)return C;var t=e.state;return t.window&&(t.window=null),e.state=null,z}function b(e,t){var i;return e&&e.state?(i=e.state,0===(2&i.wrap)?C:(i.head=t,t.done=!1,z)):C}function w(e,t){var i,n,a,r=t.length;return e&&e.state?(i=e.state,0!==i.wrap&&i.mode!==G?C:i.mode===G&&(n=1,n=g(n,t,r,0),n!==i.check)?O:(a=u(e,t,r,r))?(i.mode=he,I):(i.havedict=1,z)):C}var m,k,_=e("../utils/common"),g=e("./adler32"),v=e("./crc32"),p=e("./inffast"),x=e("./inftrees"),y=0,S=1,E=2,B=4,Z=5,A=6,z=0,R=1,N=2,C=-2,O=-3,I=-4,T=-5,U=8,D=1,F=2,L=3,H=4,M=5,j=6,K=7,P=8,Y=9,q=10,G=11,X=12,W=13,J=14,Q=15,V=16,$=17,ee=18,te=19,ie=20,ne=21,ae=22,re=23,oe=24,se=25,fe=26,le=27,de=28,ue=29,ce=30,he=31,be=32,we=852,me=592,ke=15,_e=ke,ge=!0;i.inflateReset=o,i.inflateReset2=s,i.inflateResetKeep=r,i.inflateInit=l,i.inflateInit2=f,i.inflate=c,i.inflateEnd=h,i.inflateGetHeader=b,i.inflateSetDictionary=w,i.inflateInfo="pako inflate (from Nodeca project)"},{"../utils/common":1,"./adler32":3,"./crc32":5,"./inffast":7,"./inftrees":9}],9:[function(e,t,i){"use strict";var n=e("../utils/common"),a=15,r=852,o=592,s=0,f=1,l=2,d=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],u=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],c=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],h=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];t.exports=function(e,t,i,b,w,m,k,_){var g,v,p,x,y,S,E,B,Z,A=_.bits,z=0,R=0,N=0,C=0,O=0,I=0,T=0,U=0,D=0,F=0,L=null,H=0,M=new n.Buf16(a+1),j=new n.Buf16(a+1),K=null,P=0;for(z=0;z<=a;z++)M[z]=0;for(R=0;R<b;R++)M[t[i+R]]++;for(O=A,C=a;C>=1&&0===M[C];C--);if(O>C&&(O=C),0===C)return w[m++]=20971520,w[m++]=20971520,_.bits=1,0;for(N=1;N<C&&0===M[N];N++);for(O<N&&(O=N),U=1,z=1;z<=a;z++)if(U<<=1,U-=M[z],U<0)return-1;if(U>0&&(e===s||1!==C))return-1;for(j[1]=0,z=1;z<a;z++)j[z+1]=j[z]+M[z];for(R=0;R<b;R++)0!==t[i+R]&&(k[j[t[i+R]]++]=R);if(e===s?(L=K=k,S=19):e===f?(L=d,H-=257,K=u,P-=257,S=256):(L=c,K=h,S=-1),F=0,R=0,z=N,y=m,I=O,T=0,p=-1,D=1<<O,x=D-1,e===f&&D>r||e===l&&D>o)return 1;for(;;){E=z-T,k[R]<S?(B=0,Z=k[R]):k[R]>S?(B=K[P+k[R]],Z=L[H+k[R]]):(B=96,Z=0),g=1<<z-T,v=1<<I,N=v;do v-=g,w[y+(F>>T)+v]=E<<24|B<<16|Z|0;while(0!==v);for(g=1<<z-1;F&g;)g>>=1;if(0!==g?(F&=g-1,F+=g):F=0,R++,0===--M[z]){if(z===C)break;z=t[i+k[R]]}if(z>O&&(F&x)!==p){for(0===T&&(T=O),y+=N,I=z-T,U=1<<I;I+T<C&&(U-=M[I+T],!(U<=0));)I++,U<<=1;if(D+=1<<I,e===f&&D>r||e===l&&D>o)return 1;p=F&x,w[p]=O<<24|I<<16|y-m|0}}return 0!==F&&(w[y+F]=z-T<<24|64<<16|0),_.bits=O,0}},{"../utils/common":1}],10:[function(e,t,i){"use strict";t.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],11:[function(e,t,i){"use strict";function n(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0}t.exports=n},{}],"/lib/inflate.js":[function(e,t,i){"use strict";function n(e){if(!(this instanceof n))return new n(e);this.options=s.assign({chunkSize:16384,windowBits:0,to:""},e||{});var t=this.options;t.raw&&t.windowBits>=0&&t.windowBits<16&&(t.windowBits=-t.windowBits,0===t.windowBits&&(t.windowBits=-15)),!(t.windowBits>=0&&t.windowBits<16)||e&&e.windowBits||(t.windowBits+=32),t.windowBits>15&&t.windowBits<48&&0===(15&t.windowBits)&&(t.windowBits|=15),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new u,this.strm.avail_out=0;var i=o.inflateInit2(this.strm,t.windowBits);if(i!==l.Z_OK)throw new Error(d[i]);this.header=new c,o.inflateGetHeader(this.strm,this.header)}function a(e,t){var i=new n(t);if(i.push(e,!0),i.err)throw i.msg||d[i.err];return i.result}function r(e,t){return t=t||{},t.raw=!0,a(e,t)}var o=e("./zlib/inflate"),s=e("./utils/common"),f=e("./utils/strings"),l=e("./zlib/constants"),d=e("./zlib/messages"),u=e("./zlib/zstream"),c=e("./zlib/gzheader"),h=Object.prototype.toString;n.prototype.push=function(e,t){var i,n,a,r,d,u,c=this.strm,b=this.options.chunkSize,w=this.options.dictionary,m=!1;if(this.ended)return!1;n=t===~~t?t:t===!0?l.Z_FINISH:l.Z_NO_FLUSH,"string"==typeof e?c.input=f.binstring2buf(e):"[object ArrayBuffer]"===h.call(e)?c.input=new Uint8Array(e):c.input=e,c.next_in=0,c.avail_in=c.input.length;do{if(0===c.avail_out&&(c.output=new s.Buf8(b),c.next_out=0,c.avail_out=b),i=o.inflate(c,l.Z_NO_FLUSH),i===l.Z_NEED_DICT&&w&&(u="string"==typeof w?f.string2buf(w):"[object ArrayBuffer]"===h.call(w)?new Uint8Array(w):w,i=o.inflateSetDictionary(this.strm,u)),i===l.Z_BUF_ERROR&&m===!0&&(i=l.Z_OK,m=!1),i!==l.Z_STREAM_END&&i!==l.Z_OK)return this.onEnd(i),this.ended=!0,!1;c.next_out&&(0!==c.avail_out&&i!==l.Z_STREAM_END&&(0!==c.avail_in||n!==l.Z_FINISH&&n!==l.Z_SYNC_FLUSH)||("string"===this.options.to?(a=f.utf8border(c.output,c.next_out),r=c.next_out-a,d=f.buf2string(c.output,a),c.next_out=r,c.avail_out=b-r,r&&s.arraySet(c.output,c.output,a,r,0),this.onData(d)):this.onData(s.shrinkBuf(c.output,c.next_out)))),0===c.avail_in&&0===c.avail_out&&(m=!0)}while((c.avail_in>0||0===c.avail_out)&&i!==l.Z_STREAM_END);return i===l.Z_STREAM_END&&(n=l.Z_FINISH),n===l.Z_FINISH?(i=o.inflateEnd(this.strm),this.onEnd(i),this.ended=!0,i===l.Z_OK):n!==l.Z_SYNC_FLUSH||(this.onEnd(l.Z_OK),c.avail_out=0,!0)},n.prototype.onData=function(e){this.chunks.push(e)},n.prototype.onEnd=function(e){e===l.Z_OK&&("string"===this.options.to?this.result=this.chunks.join(""):this.result=s.flattenChunks(this.chunks)),this.chunks=[],this.err=e,this.msg=this.strm.msg},i.Inflate=n,i.inflate=a,i.inflateRaw=r,i.ungzip=a},{"./utils/common":1,"./utils/strings":2,"./zlib/constants":4,"./zlib/gzheader":6,"./zlib/inflate":8,"./zlib/messages":10,"./zlib/zstream":11}]},{},[])("/lib/inflate.js")});

var DR_outputDisplay = document.getElementById("DR_outputDisplay");
if(DR_outputDisplay == undefined) {
  DR_outputDisplay = window.document.createElement('div');
  DR_outputDisplay.setAttribute("id", "DR_outputDisplay");
  DR_outputDisplay.setAttribute("style", "position: absolute; top:15px; left: 15px; width: 480px; height: 200px; overflow: auto; background-color: rgba(255, 255, 255, 0.8); border: 1px solid #000000; padding: 15px; font-size: 13px;");
  window.document.body.appendChild(DR_outputDisplay);
}

var p = window.document.createElement('div');
p.innerHTML = new Date()+"<br /> - INFO Looking for deflated data in &lt;pre&gt;-Tag...<br />";
DR_outputDisplay.appendChild(p);

// assuming potential HEX-Table is shown in pre-tag.
var elements = document.getElementsByTagName('pre');
var hexElement = -1;
// look for pre Tag that contains something like a HEX-Table with '1f 8b' and 14 more hex vals values in a row 
for(var index = 0; index < elements.length; index++) {
  if(elements[index].innerHTML.search(/ 1f +8b +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] /i) >= 0) {
    hexElement = index;

    log(DR_outputDisplay, "INFO", "Found deflated data: "+elements[index].innerHTML.substring(1, 40)+"...");
//    console.log(elements[index].innerHTML);

    break;
  }
}
if(hexElement >= 0) {
  // split for easier data processing
  var hexRows = elements[hexElement].innerHTML.split('\n');

  // analyze first line to get an idea of how the HEX-Table is layoutted
  // - offset for data before actual HEX Values start
  // - delimiter for empty spaces used in between HEX values
  // - values per line is currently assumed to be 16
  var hexRowsOffset = hexRows[0].search(/ [0-9|a-f][0-9|a-f] /i);
  var hexDelimiter = -1; 
  while(hexRows[0][hexRowsOffset+3+(++hexDelimiter)] === ' ');
  var hexValuesPerLine = 16;

  log(DR_outputDisplay, "INFO", "Calculated: Offset for HEX of "+hexRowsOffset+", Delimiter Length of HEX of "+hexDelimiter+", Length of HEX per Line of "+hexValuesPerLine);

  // process in two steps. first push binary information in this hexValues Array. second shift everything in   ByteArray
  var hexValues = [];
  var hexRowOffset = 0;
  var stop = false;

  // first step: Run through all hexRows but stopping in case spaces are found in case of HEX-Values
  for(var index = 0; index < hexRows.length; index++) {
    hexRowOffset = hexRowsOffset+1;

    for(var iindex = 0; iindex < hexValuesPerLine; iindex++) {
      if(hexRows[index][hexRowOffset] === " ") { stop=true; break; }

      var val = hexRows[index].charCodeAt(hexRowOffset++);
      var val2 = hexRows[index].charCodeAt(hexRowOffset++);
      hexValues.push((val-48>9?val-96+9:val-48)*16+(val2-48>9?val2-96+9:val2-48));
      hexRowOffset += hexDelimiter;
    }
    if(stop) { break; }
  }

  // second step: Create a perfectly fitting ArrayBuffer as base for typed array Uint8Array and run through   hexValues shifting everything inside ArrayBuffer
  var ab = new ArrayBuffer(hexValues.length);
  var storage = new Uint8Array(ab);
  var value = 0;
  hexRowOffset=0;
  while((value = hexValues.shift())>=0) {
    storage[hexRowOffset++] = value;
  }

  var p = window.document.createElement('div');
  var blob = new Blob([String.fromCharCode.apply(null, new Uint16Array(pako.inflate(storage)))], {type: "text/plain"});
  var url = window.URL.createObjectURL(blob);
  log(DR_outputDisplay, "SUCCESS", "<a href="+url+" download='"+new Date()+".bin'>Download</a><br /><span style='font-size:14px; color: red;'>If link doesnt work, use link in textbox and open in new tab: </span><input type='text' value='"+url+"' style='width: 470px'/><br />");
} else {
  log(DR_outputDisplay, "ERROR", "Could not find deflated data.<br />");
}

Answer

如果您将 Chromium 转发到“chrome://view-http-cache/...”且不显示压缩的页面数据，您可以尝试以下方法恢复单个文件 - 请注意，依赖文件（图像、包含的脚本/css）不会自动恢复。

在“chrome://view-http-cache/...”中：

点击“F12”
进入“控制台”
复制/粘贴以下代码并按回车键

对于 Chrome，请使用下载链接下载扩展文件

var log = function(target, type, msg) {
    var elem = window.document.createElement('div');
    elem.innerHTML = new Date()+"<br /> - "+type+": "+msg+"<br />";
    target.appendChild(elem);
}

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i.head&&(i.head.comment=null);i.mode=Y;case Y:if(512&i.flags){for(;h<16;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}if(c!==(65535&i.check)){e.msg="header crc mismatch",i.mode=ce;break}c=0,h=0}i.head&&(i.head.hcrc=i.flags>>9&1,i.head.done=!0),e.adler=i.check=0,i.mode=X;break;case q:for(;h<32;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}e.adler=i.check=n(c),c=0,h=0,i.mode=G;case G:if(0===i.havedict)return e.next_out=s,e.avail_out=l,e.next_in=o,e.avail_in=f,i.hold=c,i.bits=h,N;e.adler=i.check=1,i.mode=X;case X:if(t===Z||t===A)break e;case W:if(i.last){c>>>=7&h,h-=7&h,i.mode=le;break}for(;h<3;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}switch(i.last=1&c,c>>>=1,h-=1,3&c){case 0:i.mode=J;break;case 1:if(d(i),i.mode=ie,t===A){c>>>=2,h-=2;break e}break;case 2:i.mode=$;break;case 3:e.msg="invalid block type",i.mode=ce}c>>>=2,h-=2;break;case J:for(c>>>=7&h,h-=7&h;h<32;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}if((65535&c)!==(c>>>16^65535)){e.msg="invalid stored block lengths",i.mode=ce;break}if(i.length=65535&c,c=0,h=0,i.mode=Q,t===A)break e;case Q:i.mode=V;case V:if(m=i.length){if(m>f&&(m=f),m>l&&(m=l),0===m)break e;_.arraySet(r,a,o,m,s),f-=m,o+=m,l-=m,s+=m,i.length-=m;break}i.mode=X;break;case $:for(;h<14;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}if(i.nlen=(31&c)+257,c>>>=5,h-=5,i.ndist=(31&c)+1,c>>>=5,h-=5,i.ncode=(15&c)+4,c>>>=4,h-=4,i.nlen>286||i.ndist>30){e.msg="too many length or distance symbols",i.mode=ce;break}i.have=0,i.mode=ee;case ee:for(;i.have<i.ncode;){for(;h<3;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}i.lens[Ae[i.have++]]=7&c,c>>>=3,h-=3}for(;i.have<19;)i.lens[Ae[i.have++]]=0;if(i.lencode=i.lendyn,i.lenbits=7,Se={bits:i.lenbits},ye=x(y,i.lens,0,19,i.lencode,0,i.work,Se),i.lenbits=Se.bits,ye){e.msg="invalid code lengths set",i.mode=ce;break}i.have=0,i.mode=te;case te:for(;i.have<i.nlen+i.ndist;){for(;Be=i.lencode[c&(1<<i.lenbits)-1],me=Be>>>24,ke=Be>>>16&255,_e=65535&Be,!(me<=h);){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}if(_e<16)c>>>=me,h-=me,i.lens[i.have++]=_e;else{if(16===_e){for(Ee=me+2;h<Ee;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}if(c>>>=me,h-=me,0===i.have){e.msg="invalid bit length repeat",i.mode=ce;break}xe=i.lens[i.have-1],m=3+(3&c),c>>>=2,h-=2}else if(17===_e){for(Ee=me+3;h<Ee;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}c>>>=me,h-=me,xe=0,m=3+(7&c),c>>>=3,h-=3}else{for(Ee=me+7;h<Ee;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}c>>>=me,h-=me,xe=0,m=11+(127&c),c>>>=7,h-=7}if(i.have+m>i.nlen+i.ndist){e.msg="invalid bit length repeat",i.mode=ce;break}for(;m--;)i.lens[i.have++]=xe}}if(i.mode===ce)break;if(0===i.lens[256]){e.msg="invalid code -- missing end-of-block",i.mode=ce;break}if(i.lenbits=9,Se={bits:i.lenbits},ye=x(S,i.lens,0,i.nlen,i.lencode,0,i.work,Se),i.lenbits=Se.bits,ye){e.msg="invalid literal/lengths set",i.mode=ce;break}if(i.distbits=6,i.distcode=i.distdyn,Se={bits:i.distbits},ye=x(E,i.lens,i.nlen,i.ndist,i.distcode,0,i.work,Se),i.distbits=Se.bits,ye){e.msg="invalid distances set",i.mode=ce;break}if(i.mode=ie,t===A)break e;case ie:i.mode=ne;case ne:if(f>=6&&l>=258){e.next_out=s,e.avail_out=l,e.next_in=o,e.avail_in=f,i.hold=c,i.bits=h,p(e,w),s=e.next_out,r=e.output,l=e.avail_out,o=e.next_in,a=e.input,f=e.avail_in,c=i.hold,h=i.bits,i.mode===X&&(i.back=-1);break}for(i.back=0;Be=i.lencode[c&(1<<i.lenbits)-1],me=Be>>>24,ke=Be>>>16&255,_e=65535&Be,!(me<=h);){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}if(ke&&0===(240&ke)){for(ge=me,ve=ke,pe=_e;Be=i.lencode[pe+((c&(1<<ge+ve)-1)>>ge)],me=Be>>>24,ke=Be>>>16&255,_e=65535&Be,!(ge+me<=h);){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}c>>>=ge,h-=ge,i.back+=ge}if(c>>>=me,h-=me,i.back+=me,i.length=_e,0===ke){i.mode=fe;break}if(32&ke){i.back=-1,i.mode=X;break}if(64&ke){e.msg="invalid literal/length code",i.mode=ce;break}i.extra=15&ke,i.mode=ae;case ae:if(i.extra){for(Ee=i.extra;h<Ee;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}i.length+=c&(1<<i.extra)-1,c>>>=i.extra,h-=i.extra,i.back+=i.extra}i.was=i.length,i.mode=re;case re:for(;Be=i.distcode[c&(1<<i.distbits)-1],me=Be>>>24,ke=Be>>>16&255,_e=65535&Be,!(me<=h);){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}if(0===(240&ke)){for(ge=me,ve=ke,pe=_e;Be=i.distcode[pe+((c&(1<<ge+ve)-1)>>ge)],me=Be>>>24,ke=Be>>>16&255,_e=65535&Be,!(ge+me<=h);){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}c>>>=ge,h-=ge,i.back+=ge}if(c>>>=me,h-=me,i.back+=me,64&ke){e.msg="invalid distance code",i.mode=ce;break}i.offset=_e,i.extra=15&ke,i.mode=oe;case oe:if(i.extra){for(Ee=i.extra;h<Ee;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}i.offset+=c&(1<<i.extra)-1,c>>>=i.extra,h-=i.extra,i.back+=i.extra}if(i.offset>i.dmax){e.msg="invalid distance too far back",i.mode=ce;break}i.mode=se;case se:if(0===l)break e;if(m=w-l,i.offset>m){if(m=i.offset-m,m>i.whave&&i.sane){e.msg="invalid distance too far back",i.mode=ce;break}m>i.wnext?(m-=i.wnext,k=i.wsize-m):k=i.wnext-m,m>i.length&&(m=i.length),we=i.window}else we=r,k=s-i.offset,m=i.length;m>l&&(m=l),l-=m,i.length-=m;do r[s++]=we[k++];while(--m);0===i.length&&(i.mode=ne);break;case fe:if(0===l)break e;r[s++]=i.length,l--,i.mode=ne;break;case le:if(i.wrap){for(;h<32;){if(0===f)break e;f--,c|=a[o++]<<h,h+=8}if(w-=l,e.total_out+=w,i.total+=w,w&&(e.adler=i.check=i.flags?v(i.check,r,w,s-w):g(i.check,r,w,s-w)),w=l,(i.flags?c:n(c))!==i.check){e.msg="incorrect data check",i.mode=ce;break}c=0,h=0}i.mode=de;case de:if(i.wrap&&i.flags){for(;h<32;){if(0===f)break e;f--,c+=a[o++]<<h,h+=8}if(c!==(4294967295&i.total)){e.msg="incorrect length check",i.mode=ce;break}c=0,h=0}i.mode=ue;case ue:ye=R;break e;case ce:ye=O;break e;case he:return I;case be:default:return C}return e.next_out=s,e.avail_out=l,e.next_in=o,e.avail_in=f,i.hold=c,i.bits=h,(i.wsize||w!==e.avail_out&&i.mode<ce&&(i.mode<le||t!==B))&&u(e,e.output,e.next_out,w-e.avail_out)?(i.mode=he,I):(b-=e.avail_in,w-=e.avail_out,e.total_in+=b,e.total_out+=w,i.total+=w,i.wrap&&w&&(e.adler=i.check=i.flags?v(i.check,r,w,e.next_out-w):g(i.check,r,w,e.next_out-w)),e.data_type=i.bits+(i.last?64:0)+(i.mode===X?128:0)+(i.mode===ie||i.mode===Q?256:0),(0===b&&0===w||t===B)&&ye===z&&(ye=T),ye)}function h(e){if(!e||!e.state)return C;var t=e.state;return t.window&&(t.window=null),e.state=null,z}function b(e,t){var i;return e&&e.state?(i=e.state,0===(2&i.wrap)?C:(i.head=t,t.done=!1,z)):C}function w(e,t){var i,n,a,r=t.length;return e&&e.state?(i=e.state,0!==i.wrap&&i.mode!==G?C:i.mode===G&&(n=1,n=g(n,t,r,0),n!==i.check)?O:(a=u(e,t,r,r))?(i.mode=he,I):(i.havedict=1,z)):C}var m,k,_=e("../utils/common"),g=e("./adler32"),v=e("./crc32"),p=e("./inffast"),x=e("./inftrees"),y=0,S=1,E=2,B=4,Z=5,A=6,z=0,R=1,N=2,C=-2,O=-3,I=-4,T=-5,U=8,D=1,F=2,L=3,H=4,M=5,j=6,K=7,P=8,Y=9,q=10,G=11,X=12,W=13,J=14,Q=15,V=16,$=17,ee=18,te=19,ie=20,ne=21,ae=22,re=23,oe=24,se=25,fe=26,le=27,de=28,ue=29,ce=30,he=31,be=32,we=852,me=592,ke=15,_e=ke,ge=!0;i.inflateReset=o,i.inflateReset2=s,i.inflateResetKeep=r,i.inflateInit=l,i.inflateInit2=f,i.inflate=c,i.inflateEnd=h,i.inflateGetHeader=b,i.inflateSetDictionary=w,i.inflateInfo="pako inflate (from Nodeca project)"},{"../utils/common":1,"./adler32":3,"./crc32":5,"./inffast":7,"./inftrees":9}],9:[function(e,t,i){"use strict";var n=e("../utils/common"),a=15,r=852,o=592,s=0,f=1,l=2,d=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],u=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],c=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],h=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];t.exports=function(e,t,i,b,w,m,k,_){var g,v,p,x,y,S,E,B,Z,A=_.bits,z=0,R=0,N=0,C=0,O=0,I=0,T=0,U=0,D=0,F=0,L=null,H=0,M=new n.Buf16(a+1),j=new n.Buf16(a+1),K=null,P=0;for(z=0;z<=a;z++)M[z]=0;for(R=0;R<b;R++)M[t[i+R]]++;for(O=A,C=a;C>=1&&0===M[C];C--);if(O>C&&(O=C),0===C)return w[m++]=20971520,w[m++]=20971520,_.bits=1,0;for(N=1;N<C&&0===M[N];N++);for(O<N&&(O=N),U=1,z=1;z<=a;z++)if(U<<=1,U-=M[z],U<0)return-1;if(U>0&&(e===s||1!==C))return-1;for(j[1]=0,z=1;z<a;z++)j[z+1]=j[z]+M[z];for(R=0;R<b;R++)0!==t[i+R]&&(k[j[t[i+R]]++]=R);if(e===s?(L=K=k,S=19):e===f?(L=d,H-=257,K=u,P-=257,S=256):(L=c,K=h,S=-1),F=0,R=0,z=N,y=m,I=O,T=0,p=-1,D=1<<O,x=D-1,e===f&&D>r||e===l&&D>o)return 1;for(;;){E=z-T,k[R]<S?(B=0,Z=k[R]):k[R]>S?(B=K[P+k[R]],Z=L[H+k[R]]):(B=96,Z=0),g=1<<z-T,v=1<<I,N=v;do v-=g,w[y+(F>>T)+v]=E<<24|B<<16|Z|0;while(0!==v);for(g=1<<z-1;F&g;)g>>=1;if(0!==g?(F&=g-1,F+=g):F=0,R++,0===--M[z]){if(z===C)break;z=t[i+k[R]]}if(z>O&&(F&x)!==p){for(0===T&&(T=O),y+=N,I=z-T,U=1<<I;I+T<C&&(U-=M[I+T],!(U<=0));)I++,U<<=1;if(D+=1<<I,e===f&&D>r||e===l&&D>o)return 1;p=F&x,w[p]=O<<24|I<<16|y-m|0}}return 0!==F&&(w[y+F]=z-T<<24|64<<16|0),_.bits=O,0}},{"../utils/common":1}],10:[function(e,t,i){"use strict";t.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],11:[function(e,t,i){"use strict";function n(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0}t.exports=n},{}],"/lib/inflate.js":[function(e,t,i){"use strict";function n(e){if(!(this instanceof n))return new n(e);this.options=s.assign({chunkSize:16384,windowBits:0,to:""},e||{});var t=this.options;t.raw&&t.windowBits>=0&&t.windowBits<16&&(t.windowBits=-t.windowBits,0===t.windowBits&&(t.windowBits=-15)),!(t.windowBits>=0&&t.windowBits<16)||e&&e.windowBits||(t.windowBits+=32),t.windowBits>15&&t.windowBits<48&&0===(15&t.windowBits)&&(t.windowBits|=15),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new u,this.strm.avail_out=0;var i=o.inflateInit2(this.strm,t.windowBits);if(i!==l.Z_OK)throw new Error(d[i]);this.header=new c,o.inflateGetHeader(this.strm,this.header)}function a(e,t){var i=new n(t);if(i.push(e,!0),i.err)throw i.msg||d[i.err];return i.result}function r(e,t){return t=t||{},t.raw=!0,a(e,t)}var o=e("./zlib/inflate"),s=e("./utils/common"),f=e("./utils/strings"),l=e("./zlib/constants"),d=e("./zlib/messages"),u=e("./zlib/zstream"),c=e("./zlib/gzheader"),h=Object.prototype.toString;n.prototype.push=function(e,t){var i,n,a,r,d,u,c=this.strm,b=this.options.chunkSize,w=this.options.dictionary,m=!1;if(this.ended)return!1;n=t===~~t?t:t===!0?l.Z_FINISH:l.Z_NO_FLUSH,"string"==typeof e?c.input=f.binstring2buf(e):"[object ArrayBuffer]"===h.call(e)?c.input=new Uint8Array(e):c.input=e,c.next_in=0,c.avail_in=c.input.length;do{if(0===c.avail_out&&(c.output=new s.Buf8(b),c.next_out=0,c.avail_out=b),i=o.inflate(c,l.Z_NO_FLUSH),i===l.Z_NEED_DICT&&w&&(u="string"==typeof w?f.string2buf(w):"[object ArrayBuffer]"===h.call(w)?new Uint8Array(w):w,i=o.inflateSetDictionary(this.strm,u)),i===l.Z_BUF_ERROR&&m===!0&&(i=l.Z_OK,m=!1),i!==l.Z_STREAM_END&&i!==l.Z_OK)return this.onEnd(i),this.ended=!0,!1;c.next_out&&(0!==c.avail_out&&i!==l.Z_STREAM_END&&(0!==c.avail_in||n!==l.Z_FINISH&&n!==l.Z_SYNC_FLUSH)||("string"===this.options.to?(a=f.utf8border(c.output,c.next_out),r=c.next_out-a,d=f.buf2string(c.output,a),c.next_out=r,c.avail_out=b-r,r&&s.arraySet(c.output,c.output,a,r,0),this.onData(d)):this.onData(s.shrinkBuf(c.output,c.next_out)))),0===c.avail_in&&0===c.avail_out&&(m=!0)}while((c.avail_in>0||0===c.avail_out)&&i!==l.Z_STREAM_END);return i===l.Z_STREAM_END&&(n=l.Z_FINISH),n===l.Z_FINISH?(i=o.inflateEnd(this.strm),this.onEnd(i),this.ended=!0,i===l.Z_OK):n!==l.Z_SYNC_FLUSH||(this.onEnd(l.Z_OK),c.avail_out=0,!0)},n.prototype.onData=function(e){this.chunks.push(e)},n.prototype.onEnd=function(e){e===l.Z_OK&&("string"===this.options.to?this.result=this.chunks.join(""):this.result=s.flattenChunks(this.chunks)),this.chunks=[],this.err=e,this.msg=this.strm.msg},i.Inflate=n,i.inflate=a,i.inflateRaw=r,i.ungzip=a},{"./utils/common":1,"./utils/strings":2,"./zlib/constants":4,"./zlib/gzheader":6,"./zlib/inflate":8,"./zlib/messages":10,"./zlib/zstream":11}]},{},[])("/lib/inflate.js")});

var DR_outputDisplay = document.getElementById("DR_outputDisplay");
if(DR_outputDisplay == undefined) {
  DR_outputDisplay = window.document.createElement('div');
  DR_outputDisplay.setAttribute("id", "DR_outputDisplay");
  DR_outputDisplay.setAttribute("style", "position: absolute; top:15px; left: 15px; width: 480px; height: 200px; overflow: auto; background-color: rgba(255, 255, 255, 0.8); border: 1px solid #000000; padding: 15px; font-size: 13px;");
  window.document.body.appendChild(DR_outputDisplay);
}

var p = window.document.createElement('div');
p.innerHTML = new Date()+"<br /> - INFO Looking for deflated data in &lt;pre&gt;-Tag...<br />";
DR_outputDisplay.appendChild(p);

// assuming potential HEX-Table is shown in pre-tag.
var elements = document.getElementsByTagName('pre');
var hexElement = -1;
// look for pre Tag that contains something like a HEX-Table with '1f 8b' and 14 more hex vals values in a row 
for(var index = 0; index < elements.length; index++) {
  if(elements[index].innerHTML.search(/ 1f +8b +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] +[0-9|a-f][0-9|a-f] /i) >= 0) {
    hexElement = index;

    log(DR_outputDisplay, "INFO", "Found deflated data: "+elements[index].innerHTML.substring(1, 40)+"...");
//    console.log(elements[index].innerHTML);

    break;
  }
}
if(hexElement >= 0) {
  // split for easier data processing
  var hexRows = elements[hexElement].innerHTML.split('\n');

  // analyze first line to get an idea of how the HEX-Table is layoutted
  // - offset for data before actual HEX Values start
  // - delimiter for empty spaces used in between HEX values
  // - values per line is currently assumed to be 16
  var hexRowsOffset = hexRows[0].search(/ [0-9|a-f][0-9|a-f] /i);
  var hexDelimiter = -1; 
  while(hexRows[0][hexRowsOffset+3+(++hexDelimiter)] === ' ');
  var hexValuesPerLine = 16;

  log(DR_outputDisplay, "INFO", "Calculated: Offset for HEX of "+hexRowsOffset+", Delimiter Length of HEX of "+hexDelimiter+", Length of HEX per Line of "+hexValuesPerLine);

  // process in two steps. first push binary information in this hexValues Array. second shift everything in   ByteArray
  var hexValues = [];
  var hexRowOffset = 0;
  var stop = false;

  // first step: Run through all hexRows but stopping in case spaces are found in case of HEX-Values
  for(var index = 0; index < hexRows.length; index++) {
    hexRowOffset = hexRowsOffset+1;

    for(var iindex = 0; iindex < hexValuesPerLine; iindex++) {
      if(hexRows[index][hexRowOffset] === " ") { stop=true; break; }

      var val = hexRows[index].charCodeAt(hexRowOffset++);
      var val2 = hexRows[index].charCodeAt(hexRowOffset++);
      hexValues.push((val-48>9?val-96+9:val-48)*16+(val2-48>9?val2-96+9:val2-48));
      hexRowOffset += hexDelimiter;
    }
    if(stop) { break; }
  }

  // second step: Create a perfectly fitting ArrayBuffer as base for typed array Uint8Array and run through   hexValues shifting everything inside ArrayBuffer
  var ab = new ArrayBuffer(hexValues.length);
  var storage = new Uint8Array(ab);
  var value = 0;
  hexRowOffset=0;
  while((value = hexValues.shift())>=0) {
    storage[hexRowOffset++] = value;
  }

  var p = window.document.createElement('div');
  var blob = new Blob([String.fromCharCode.apply(null, new Uint16Array(pako.inflate(storage)))], {type: "text/plain"});
  var url = window.URL.createObjectURL(blob);
  log(DR_outputDisplay, "SUCCESS", "<a href="+url+" download='"+new Date()+".bin'>Download</a><br /><span style='font-size:14px; color: red;'>If link doesnt work, use link in textbox and open in new tab: </span><input type='text' value='"+url+"' style='width: 470px'/><br />");
} else {
  log(DR_outputDisplay, "ERROR", "Could not find deflated data.<br />");
}

如何从 Chrome 缓存中恢复页面内容？

答案1

答案2

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