packages/ssoinabox-webui/root/usr/local/share/ssoinabox/htdocs/res/base64.js
changeset 4 2212b2ded8bf
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/packages/ssoinabox-webui/root/usr/local/share/ssoinabox/htdocs/res/base64.js	Fri Jan 11 05:41:41 2013 -0500
@@ -0,0 +1,85 @@
+var keyStr = "ABCDEFGHIJKLMNOP" +
+       "QRSTUVWXYZabcdef" +
+       "ghijklmnopqrstuv" +
+       "wxyz0123456789+/" +
+       "=";
+       
+var Base64 = {
+
+	encode: function (input) {
+			input = escape(input);
+			var output = "";
+			var chr1, chr2, chr3 = "";
+			var enc1, enc2, enc3, enc4 = "";
+			var i = 0;
+			
+			do {
+				chr1 = input.charCodeAt(i++);
+				chr2 = input.charCodeAt(i++);
+				chr3 = input.charCodeAt(i++);
+				
+				enc1 = chr1 >> 2;
+				enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
+				enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
+				enc4 = chr3 & 63;
+				
+				if (isNaN(chr2)) {
+					enc3 = enc4 = 64;
+				} else if (isNaN(chr3)) {
+					enc4 = 64;
+				}
+				
+				output = output +
+				   keyStr.charAt(enc1) +
+				   keyStr.charAt(enc2) +
+				   keyStr.charAt(enc3) +
+				   keyStr.charAt(enc4);
+				chr1 = chr2 = chr3 = "";
+				enc1 = enc2 = enc3 = enc4 = "";
+			} while (i < input.length);
+			
+			return output;
+		}
+
+	, decode : function (input) {
+			var output = "";
+			var chr1, chr2, chr3 = "";
+			var enc1, enc2, enc3, enc4 = "";
+			var i = 0;
+			
+			// remove all characters that are not A-Z, a-z, 0-9, +, /, or =
+			var base64test = /[^A-Za-z0-9\+\/\=]/g;
+			if (base64test.exec(input)) {
+			alert("There were invalid base64 characters in the input text.\n" +
+			      "Valid base64 characters are A-Z, a-z, 0-9, '+', '/',and '='\n" +
+			      "Expect errors in decoding.");
+			}
+			input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
+			
+			do {
+				enc1 = keyStr.indexOf(input.charAt(i++));
+				enc2 = keyStr.indexOf(input.charAt(i++));
+				enc3 = keyStr.indexOf(input.charAt(i++));
+				enc4 = keyStr.indexOf(input.charAt(i++));
+				
+				chr1 = (enc1 << 2) | (enc2 >> 4);
+				chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
+				chr3 = ((enc3 & 3) << 6) | enc4;
+				
+				output = output + String.fromCharCode(chr1);
+				
+				if (enc3 != 64) {
+					output = output + String.fromCharCode(chr2);
+				}
+				if (enc4 != 64) {
+					output = output + String.fromCharCode(chr3);
+				}
+				
+				chr1 = chr2 = chr3 = "";
+				enc1 = enc2 = enc3 = enc4 = "";
+				
+			} while (i < input.length);
+			
+			return unescape(output);
+		}
+}