| /script-kiddie/002_script_kiddie/script-kiddie/node_modules/js-beautify/js/lib/unpackers/p_a_c_k_e_r_unpacker.js |
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| // |
| // Unpacker for Dean Edward's p.a.c.k.e.r, a part of javascript beautifier |
| // written by Einar Lielmanis <einar@jsbeautifier.org> |
| // |
| // Coincidentally, it can defeat a couple of other eval-based compressors. |
| // |
| // usage: |
| // |
| // if (P_A_C_K_E_R.detect(some_string)) { |
| // var unpacked = P_A_C_K_E_R.unpack(some_string); |
| // } |
| // |
| // |
| |
| var P_A_C_K_E_R = { |
| detect: function(str) { |
| return (P_A_C_K_E_R.get_chunks(str).length > 0); |
| }, |
| |
| get_chunks: function(str) { |
| var chunks = str.match(/eval\(\(?function\(.*?(,0,\{\}\)\)|split\('\|'\)\)\))($|\n)/g); |
| return chunks ? chunks : []; |
| }, |
| |
| unpack: function(str) { |
| var chunks = P_A_C_K_E_R.get_chunks(str), |
| chunk; |
| for (var i = 0; i < chunks.length; i++) { |
| chunk = chunks[i].replace(/\n$/, ''); |
| str = str.split(chunk).join(P_A_C_K_E_R.unpack_chunk(chunk)); |
| } |
| return str; |
| }, |
| |
| unpack_chunk: function(str) { |
| var unpacked_source = ''; |
| var __eval = eval; |
| if (P_A_C_K_E_R.detect(str)) { |
| try { |
| eval = function(s) { // jshint ignore:line |
| unpacked_source += s; |
| return unpacked_source; |
| }; // jshint ignore:line |
| __eval(str); |
| if (typeof unpacked_source === 'string' && unpacked_source) { |
| str = unpacked_source; |
| } |
| } catch (e) { |
| // well, it failed. we'll just return the original, instead of crashing on user. |
| } |
| } |
| eval = __eval; // jshint ignore:line |
| return str; |
| }, |
| |
| run_tests: function(sanity_test) { |
| var t = sanity_test || new SanityTest(); |
| |
| var pk1 = "eval(function(p,a,c,k,e,r){e=String;if(!''.replace(/^/,String)){while(c--)r[c]=k[c]||c;k=[function(e){return r[e]}];e=function(){return'\\\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\\\b'+e(c)+'\\\\b','g'),k[c]);return p}('0 2=1',3,3,'var||a'.split('|'),0,{}))"; |
| var unpk1 = 'var a=1'; |
| var pk2 = "eval(function(p,a,c,k,e,r){e=String;if(!''.replace(/^/,String)){while(c--)r[c]=k[c]||c;k=[function(e){return r[e]}];e=function(){return'\\\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\\\b'+e(c)+'\\\\b','g'),k[c]);return p}('0 2=1',3,3,'foo||b'.split('|'),0,{}))"; |
| var unpk2 = 'foo b=1'; |
| var pk_broken = "eval(function(p,a,c,k,e,r){BORKBORK;if(!''.replace(/^/,String)){while(c--)r[c]=k[c]||c;k=[function(e){return r[e]}];e=function(){return'\\\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\\\b'+e(c)+'\\\\b','g'),k[c]);return p}('0 2=1',3,3,'var||a'.split('|'),0,{}))"; |
| var pk3 = "eval(function(p,a,c,k,e,r){e=String;if(!''.replace(/^/,String)){while(c--)r[c]=k[c]||c;k=[function(e){return r[e]}];e=function(){return'\\\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\\\b'+e(c)+'\\\\b','g'),k[c]);return p}('0 2=1{}))',3,3,'var||a'.split('|'),0,{}))"; |
| var unpk3 = 'var a=1{}))'; |
| |
| t.test_function(P_A_C_K_E_R.detect, "P_A_C_K_E_R.detect"); |
| t.expect('', false); |
| t.expect('var a = b', false); |
| t.test_function(P_A_C_K_E_R.unpack, "P_A_C_K_E_R.unpack"); |
| t.expect(pk_broken, pk_broken); |
| t.expect(pk1, unpk1); |
| t.expect(pk2, unpk2); |
| t.expect(pk3, unpk3); |
| |
| var filler = '\nfiller\n'; |
| t.expect(filler + pk1 + "\n" + pk_broken + filler + pk2 + filler, filler + unpk1 + "\n" + pk_broken + filler + unpk2 + filler); |
| |
| return t; |
| } |
| |
| |
| }; |
