/** * A Javascript object to encode and/or decode html characters using HTML or Numeric entities that handles double or partial encoding * Author: R Reid * source: http://www.strictly-software.com/htmlencode * Licences: GPL, The MIT License (MIT) * Copyright: (c) 2011 Robert Reid - Strictly-Software.com * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * Revision: * 2011-07-14, Jacques-Yves Bleau: * - fixed conversion error with capitalized accentuated characters * + converted arr1 and arr2 to object property to remove redundancy * * Revision: * 2011-11-10, Ce-Yi Hio: * - fixed conversion error with a number of capitalized entity characters * * Revision: * 2011-11-10, Rob Reid: * - changed array format */ Encoder = { // When encoding do we convert characters into html or numerical entities EncodeType : "entity", // entity OR numerical isEmpty : function(val){ if(val){ return ((val===null) || val.length==0 || /^\s+$/.test(val)); }else{ return true; } }, // arrays for conversion from HTML Entities to Numerical values arr1: [' ','¡','¢','£','¤','¥','¦','§','¨','©','ª','«','¬','­','®','¯','°','±','²','³','´','µ','¶','·','¸','¹','º','»','¼','½','¾','¿','À','Á','Â','Ã','Ä','Å','Æ','Ç','È','É','Ê','Ë','Ì','Í','Î','Ï','Ð','Ñ','Ò','Ó','Ô','Õ','Ö','×','Ø','Ù','Ú','Û','Ü','Ý','Þ','ß','à','á','â','ã','ä','å','æ','ç','è','é','ê','ë','ì','í','î','ï','ð','ñ','ò','ó','ô','õ','ö','÷','ø','ù','ú','û','ü','ý','þ','ÿ','"','&','<','>','Œ','œ','Š','š','Ÿ','ˆ','˜',' ',' ',' ','‌','‍','‎','‏','–','—','‘','’','‚','“','”','„','†','‡','‰','‹','›','€','ƒ','Α','Β','Γ','Δ','Ε','Ζ','Η','Θ','Ι','Κ','Λ','Μ','Ν','Ξ','Ο','Π','Ρ','Σ','Τ','Υ','Φ','Χ','Ψ','Ω','α','β','γ','δ','ε','ζ','η','θ','ι','κ','λ','μ','ν','ξ','ο','π','ρ','ς','σ','τ','υ','φ','χ','ψ','ω','ϑ','ϒ','ϖ','•','…','′','″','‾','⁄','℘','ℑ','ℜ','™','ℵ','←','↑','→','↓','↔','↵','⇐','⇑','⇒','⇓','⇔','∀','∂','∃','∅','∇','∈','∉','∋','∏','∑','−','∗','√','∝','∞','∠','∧','∨','∩','∪','∫','∴','∼','≅','≈','≠','≡','≤','≥','⊂','⊃','⊄','⊆','⊇','⊕','⊗','⊥','⋅','⌈','⌉','⌊','⌋','⟨','⟩','◊','♠','♣','♥','♦'], arr2: [' ','¡','¢','£','¤','¥','¦','§','¨','©','ª','«','¬','­','®','¯','°','±','²','³','´','µ','¶','·','¸','¹','º','»','¼','½','¾','¿','À','Á','Â','Ã','Ä','Å','Æ','Ç','È','É','Ê','Ë','Ì','Í','Î','Ï','Ð','Ñ','Ò','Ó','Ô','Õ','Ö','×','Ø','Ù','Ú','Û','Ü','Ý','Þ','ß','à','á','â','ã','ä','å','æ','ç','è','é','ê','ë','ì','í','î','ï','ð','ñ','ò','ó','ô','õ','ö','÷','ø','ù','ú','û','ü','ý','þ','ÿ','"','&','<','>','Œ','œ','Š','š','Ÿ','ˆ','˜',' ',' ',' ','‌','‍','‎','‏','–','—','‘','’','‚','“','”','„','†','‡','‰','‹','›','€','ƒ','Α','Β','Γ','Δ','Ε','Ζ','Η','Θ','Ι','Κ','Λ','Μ','Ν','Ξ','Ο','Π','Ρ','Σ','Τ','Υ','Φ','Χ','Ψ','Ω','α','β','γ','δ','ε','ζ','η','θ','ι','κ','λ','μ','ν','ξ','ο','π','ρ','ς','σ','τ','υ','φ','χ','ψ','ω','ϑ','ϒ','ϖ','•','…','′','″','‾','⁄','℘','ℑ','ℜ','™','ℵ','←','↑','→','↓','↔','↵','⇐','⇑','⇒','⇓','⇔','∀','∂','∃','∅','∇','∈','∉','∋','∏','∑','−','∗','√','∝','∞','∠','∧','∨','∩','∪','∫','∴','∼','≅','≈','≠','≡','≤','≥','⊂','⊃','⊄','⊆','⊇','⊕','⊗','⊥','⋅','⌈','⌉','⌊','⌋','〈','〉','◊','♠','♣','♥','♦'], // Convert HTML entities into numerical entities HTML2Numerical : function(s){ return this.swapArrayVals(s,this.arr1,this.arr2); }, // Convert Numerical entities into HTML entities NumericalToHTML : function(s){ return this.swapArrayVals(s,this.arr2,this.arr1); }, // Numerically encodes all unicode characters numEncode : function(s){ if(this.isEmpty(s)) return ""; var e = ""; for (var i = 0; i < s.length; i++) { var c = s.charAt(i); if (c < " " || c > "~") { c = "&#" + c.charCodeAt() + ";"; } e += c; } return e; }, // HTML Decode numerical and HTML entities back to original values htmlDecode : function(s){ var c,m,d = s; if(this.isEmpty(d)) return ""; // convert HTML entites back to numerical entites first d = this.HTML2Numerical(d); // look for numerical entities " arr=d.match(/&#[0-9]{1,5};/g); // if no matches found in string then skip if(arr!=null){ for(var x=0;x= -32768 && c <= 65535){ // decode every single match within string d = d.replace(m, String.fromCharCode(c)); }else{ d = d.replace(m, ""); //invalid so replace with nada } } } return d; }, // encode an input string into either numerical or HTML entities htmlEncode : function(s,dbl){ if(this.isEmpty(s)) return ""; // do we allow double encoding? E.g will & be turned into &amp; dbl = dbl || false; //default to prevent double encoding // if allowing double encoding we do ampersands first if(dbl){ if(this.EncodeType=="numerical"){ s = s.replace(/&/g, "&"); }else{ s = s.replace(/&/g, "&"); } } // convert the xss chars to numerical entities ' " < > s = this.XSSEncode(s,false); if(this.EncodeType=="numerical" || !dbl){ // Now call function that will convert any HTML entities to numerical codes s = this.HTML2Numerical(s); } // Now encode all chars above 127 e.g unicode s = this.numEncode(s); // now we know anything that needs to be encoded has been converted to numerical entities we // can encode any ampersands & that are not part of encoded entities // to handle the fact that I need to do a negative check and handle multiple ampersands &&& // I am going to use a placeholder // if we don't want double encoded entities we ignore the & in existing entities if(!dbl){ s = s.replace(/&#/g,"##AMPHASH##"); if(this.EncodeType=="numerical"){ s = s.replace(/&/g, "&"); }else{ s = s.replace(/&/g, "&"); } s = s.replace(/##AMPHASH##/g,"&#"); } // replace any malformed entities s = s.replace(/&#\d*([^\d;]|$)/g, "$1"); if(!dbl){ // safety check to correct any double encoded & s = this.correctEncoding(s); } // now do we need to convert our numerical encoded string into entities if(this.EncodeType=="entity"){ s = this.NumericalToHTML(s); } return s; }, // Encodes the basic 4 characters used to malform HTML in XSS hacks XSSEncode : function(s,en){ if(!this.isEmpty(s)){ en = en || true; // do we convert to numerical or html entity? if(en){ s = s.replace(/\'/g,"'"); //no HTML equivalent as &apos is not cross browser supported s = s.replace(/\"/g,"""); s = s.replace(//g,">"); }else{ s = s.replace(/\'/g,"'"); //no HTML equivalent as &apos is not cross browser supported s = s.replace(/\"/g,"""); s = s.replace(//g,">"); } return s; }else{ return ""; } }, // returns true if a string contains html or numerical encoded entities hasEncoded : function(s){ if(/&#[0-9]{1,5};/g.test(s)){ return true; }else if(/&[A-Z]{2,6};/gi.test(s)){ return true; }else{ return false; } }, // will remove any unicode characters stripUnicode : function(s){ return s.replace(/[^\x20-\x7E]/g,""); }, // corrects any double encoded & entities e.g &amp; correctEncoding : function(s){ return s.replace(/(&)(amp;)+/,"$1"); }, // Function to loop through an array swaping each item with the value from another array e.g swap HTML entities with Numericals swapArrayVals : function(s,arr1,arr2){ if(this.isEmpty(s)) return ""; var re; if(arr1 && arr2){ //ShowDebug("in swapArrayVals arr1.length = " + arr1.length + " arr2.length = " + arr2.length) // array lengths must match if(arr1.length == arr2.length){ for(var x=0,i=arr1.length;x