120 lines
3.8 KiB
JavaScript
120 lines
3.8 KiB
JavaScript
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/*
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The MIT License (MIT)
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Copyright (c) 2007-2018 Einar Lielmanis, Liam Newman, and contributors.
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation files
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(the "Software"), to deal in the Software without restriction,
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including without limitation the rights to use, copy, modify, merge,
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publish, distribute, sublicense, and/or sell copies of the Software,
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and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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//
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// simple unpacker/deobfuscator for scripts messed up with myobfuscate.com
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// You really don't want to obfuscate your scripts there: they're tracking
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// your unpackings, your script gets turned into something like this,
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// as of 2011-04-25:
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/*
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var _escape = 'your_script_escaped';
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var _111 = document.createElement('script');
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_111.src = 'http://api.www.myobfuscate.com/?getsrc=ok' +
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'&ref=' + encodeURIComponent(document.referrer) +
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'&url=' + encodeURIComponent(document.URL);
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var 000 = document.getElementsByTagName('head')[0];
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000.appendChild(_111);
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document.write(unescape(_escape));
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*/
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//
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// written by Einar Lielmanis <einar@beautifier.io>
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//
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// usage:
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//
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// if (MyObfuscate.detect(some_string)) {
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// var unpacked = MyObfuscate.unpack(some_string);
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// }
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//
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//
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/*jshint strict:false */
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var MyObfuscate = {
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detect: function(str) {
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if (/^var _?[0O1lI]{3}\=('|\[).*\)\)\);/.test(str)) {
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return true;
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}
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if (/^function _?[0O1lI]{3}\(_/.test(str) && /eval\(/.test(str)) {
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return true;
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}
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return false;
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},
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unpack: function(str) {
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if (MyObfuscate.detect(str)) {
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var __eval = eval;
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try {
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eval = function(unpacked) { // jshint ignore:line
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if (MyObfuscate.starts_with(unpacked, 'var _escape')) {
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// fetch the urlencoded stuff from the script,
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var matches = /'([^']*)'/.exec(unpacked);
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var unescaped = unescape(matches[1]);
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if (MyObfuscate.starts_with(unescaped, '<script>')) {
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unescaped = unescaped.substr(8, unescaped.length - 8);
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}
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if (MyObfuscate.ends_with(unescaped, '</script>')) {
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unescaped = unescaped.substr(0, unescaped.length - 9);
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}
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unpacked = unescaped;
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}
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// throw to terminate the script
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unpacked = "// Unpacker warning: be careful when using myobfuscate.com for your projects:\n" +
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"// scripts obfuscated by the free online version may call back home.\n" +
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"\n//\n" + unpacked;
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throw unpacked;
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}; // jshint ignore:line
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__eval(str); // should throw
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} catch (e) {
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// well, it failed. we'll just return the original, instead of crashing on user.
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if (typeof e === "string") {
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str = e;
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}
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}
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eval = __eval; // jshint ignore:line
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}
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return str;
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},
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starts_with: function(str, what) {
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return str.substr(0, what.length) === what;
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},
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ends_with: function(str, what) {
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return str.substr(str.length - what.length, what.length) === what;
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},
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run_tests: function(sanity_test) {
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var t = sanity_test || new SanityTest();
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return t;
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}
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};
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