initial commit

js/apphelpers.js

@@ -0,0 +1,81 @@
+function CheckForEmptyDB() {
+    var assets = App.Asset.find();
+    var notempty = true;
+    notempty = assets.forEach(function(asset) {
+        return false;
+    });
+    return notempty;
+}
+
+
+// Convert hex string to ASCII.
+// See http://stackoverflow.com/questions/11889329/word-array-to-string
+function hex2a(hex) {
+    var str = '';
+    for (var i = 0; i < hex.length; i += 2)
+        str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
+    return str;
+}
+
+function decryptimportOLD(pass, data) {
+    var enpass = CryptoJS.SHA512(pass).toString(CryptoJS.enc.Base64);
+    var clear = CryptoJS.AES.decrypt(data, enpass);
+    return unescape(hex2a(clear.toString()));
+}
+
+function decryptimport(hash, data) {
+    var clear = CryptoJS.AES.decrypt(data, hash);
+    return unescape(hex2a(clear.toString()));
+}
+
+
+
+// from:
+// http://ntt.cc/2008/01/19/base64-encoder-decoder-with-javascript.html
+function decode64(input) {
+    var output = "";
+    var chr1, chr2, chr3 = "";
+    var enc1, enc2, enc3, enc4 = "";
+    var i = 0;
+
+    var keyStr = "ABCDEFGHIJKLMNOP" +
+        "QRSTUVWXYZabcdef" +
+        "ghijklmnopqrstuv" +
+        "wxyz0123456789+/" +
+        "=";
+
+    // 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);
+}