add and fix checks for daemon version and input data for short URI related functions

js/interface_common.js

@@ -808,7 +808,17 @@ function openRequestShortURIForm() {
             //txtTitle: polyglot.t(''), add some title (not 'error', please) or just KISS
             txtMessage: 'You can\'t short links because you are not logged in.'
         });
+        return;
     }
+    if (parseInt(twisterVersion) < 93500) {
+        alertPopup({
+            //txtTitle: polyglot.t(''), add some title (not 'error', please) or just KISS
+            txtMessage: 'You can\'t short links because twister daemon is obsolete!\n'
+                + 'Version 0.9.35 or higher is required. Please keep your twister up to date.'
+        });
+        return;
+    }
+
     var uri = prompt('enter a link, watch yourself carefully');  // FIXME
     newShortURI(uri,
         function (req, uriLong, uriShort) {
@@ -852,10 +862,6 @@ function fetchShortenedURI(req) {
         applyShortenedURI(req, twister.URIs[req]);
         return;
     }
-    if (parseInt(twisterVersion) < 93500) {
-        console.warn('can\'t fetch URI "' + req + '": daemon is obsolete, version 0.9.35 or higher is required');
-        return;
-    }
 
     decodeShortURI(req,
         function (req, ret) {

js/twister_actions.js

@@ -324,6 +324,10 @@ function newRtMsg(postData, msg) {
 
 function newShortURI(uri, cbFunc, cbReq) {
     if (!uri || !defaultScreenName) return;
+    if (parseInt(twisterVersion) < 93500) {
+        console.warn('can\'t short URI "' + uri + '": daemon is obsolete, version 0.9.35 or higher is required');
+        return;
+    }
 
     for (var i in twister.URIs)
         if (twister.URIs[i] === uri) {

js/twister_io.js

@@ -113,6 +113,12 @@ function dhtget(peerAlias, resource, multi, cbFunc, cbReq, timeoutArgs) {
 // the expanded url is returned to callback
 // null is passed to callback in case of an error
 function decodeShortURI(locator, cbFunc, cbReq, timeoutArgs) {
+    if (!locator) return;
+    if (parseInt(twisterVersion) < 93500) {
+        console.warn('can\'t fetch URI "' + req + '": daemon is obsolete, version 0.9.35 or higher is required');
+        return;
+    }
+
     if (_dhtgetPendingMap[locator]) {
         _dhtgetAddPending(locator, cbFunc, cbReq);
     } else {