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August 29, 2015 14:00
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simple js jail
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<!DOCTYPE html> | |
<html> | |
<head> | |
<script id="user-code" type="text"> | |
debugger; | |
</script> | |
<script type="text/javascript"> | |
(function() { | |
console.log("new Function"); | |
var Env = function(filename, source) { | |
this.filename = filename; | |
this.source = source; | |
this.this = {}; | |
this.module = {}; | |
this.exports = {}; | |
this.module.exports = this.exports; | |
this.window = {}; | |
this.require = function() {}; | |
} | |
Env.prototype = { | |
template: "return (function(module, exports, require, window) {%%code%%;}).call(this.this, this.module, this.exports, this.require, this.window);", | |
check: function(result) {}, | |
make: function() {}, | |
load:function() { | |
var code = this.template.replace("%%code%%", this.source); | |
console.log(code); | |
var func = new Function(code); | |
try { | |
var result = func.call(this); | |
} catch(error) { | |
console.log(error); | |
} | |
} | |
}; | |
var env = new Env("filename123", document.getElementById("user-code").text); | |
env.load(); | |
})(); | |
</script> | |
<script type="text/javascript"> | |
(function() { | |
console.log("EVAL"); | |
var Env = function(filename, source) { | |
this.filename = filename; | |
this.source = source; | |
this.this = {}; | |
this.module = {}; | |
this.exports = {}; | |
this.module.exports = this.exports; | |
this.window = {}; | |
this.require = function() {}; | |
} | |
Env.prototype = { | |
template: "(function() {(function(module, exports, require, window) {%%code%%;}).call(this.this, this.module, this.exports, this.require, this.window); })", | |
check: function(result) {}, | |
make: function() {}, | |
load:function() { | |
var code = this.template.replace("%%code%%", this.source); | |
console.log(code); | |
var func = eval.call(window, code); | |
try { | |
var result = func.call(this); | |
} catch(error) { | |
console.log(error); | |
} | |
} | |
}; | |
var env = new Env("filename123", document.getElementById("user-code").text); | |
env.load(); | |
})(); | |
</script> | |
</head> | |
<body> | |
</body> | |
</html> |
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