Make header field case insensitive

#315: Header field name is now case insensitive

drivers/chrome/js/headers.js

@@ -26,7 +26,7 @@
 
 						headers.forEach(function(line) {
 							if ( line ) {
-								name  = line.substring(0, line.indexOf(': '));
+								name  = line.substring(0, line.indexOf(': ')).toLowerCase();
 								value = line.substring(line.indexOf(': ') + 2, line.length - 1);
 
 								responseHeaders[name] = value;

drivers/firefox/content/js/driver.js

@@ -100,7 +100,7 @@
 										var headers = {};
 
 										request.nsIHttpChannel.visitResponseHeaders(function(header, value) {
-											headers[header] = value;
+											headers[header.toLowerCase()] = value;
 										});
 
 										w.analyze(progress.currentURI.host, progress.currentURI.spec, { headers: headers });

drivers/php/Wappalyzer.php

@@ -136,7 +136,7 @@ class Wappalyzer
 			if ( strpos(trim($line), ': ') !== false ) {
 				list($key, $value) = explode(': ', $line);
 
-				$result->headers[$key] = $value;
+				$result->headers[strtolower($key)] = $value;
 			}
 		}
 

drivers/ruby/wappalyzer.rb

@@ -18,7 +18,7 @@ class Wappalyzer
     uri, body, headers = URI(url), nil, {}
     Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https', :open_timeout => 5) do |http|
       resp = http.get(uri.request_uri)
-      resp.canonical_each{|k,v| headers[k] = v}
+      resp.each_header{|k,v| headers[k.downcase] = v}
       body = resp.body.encode('UTF-8', :invalid => :replace, :undef => :replace)
     end
 

share/js/wappalyzer.js

@@ -351,8 +351,8 @@ var wappalyzer = (function() {
 							for ( header in w.apps[app].headers ) {
 								parse(w.apps[app][type][header]).map(function(pattern) {
 
-									if ( typeof data[type][header] === 'string' && pattern.regex.test(data[type][header]) ) {
-										apps[app].setDetected(pattern, type, data[type][header], header);
+									if ( typeof data[type][header.toLowerCase()] === 'string' && pattern.regex.test(data[type][header.toLowerCase()]) ) {
+										apps[app].setDetected(pattern, type, data[type][header.toLowerCase()], header);
 									}
 									profiler.checkPoint(app, type, pattern.regex);
 								});