Add error message when trying to copy a restricted pad

www/common/cryptget.js

@@ -76,6 +76,9 @@ define([
             finish(Session, void 0, rt.getUserDoc());
         };
 
+        config.onError = function (info) {
+            finish(Session, info.error);
+        };
         config.onChannelError = function (info) {
             finish(Session, info.error);
         };

www/common/cryptpad-common.js

@@ -632,7 +632,12 @@ define([
             }
         }).nThen(function () {
             Crypt.get(parsed.hash, function (err, val) {
-                if (err) { throw new Error(err); }
+                if (err) {
+                    return void cb(err);
+                }
+                if (!val) {
+                    return void cb('ENOENT');
+                }
                 try {
                     // Try to fix the title before importing the template
                     var parsed = JSON.parse(val);
@@ -665,14 +670,14 @@ define([
                 Crypt.get(parsed.hash, _waitFor(function (err, _val) {
                     if (err) {
                         _waitFor.abort();
-                        return void cb();
+                        return void cb(err);
                     }
                     try {
                         val = JSON.parse(_val);
                         fixPadMetadata(val, true);
                     } catch (e) {
                         _waitFor.abort();
-                        return void cb();
+                        return void cb(e.message);
                     }
                 }), optsGet);
                 return;
@@ -691,7 +696,7 @@ define([
                 Util.fetch(src, waitFor(function (err, _u8) {
                     if (err) {
                         _waitFor.abort();
-                        return void waitFor.abort();
+                        return void cb(err);
                     }
                     u8 = _u8;
                 }));
@@ -700,7 +705,7 @@ define([
                     FileCrypto.decrypt(u8, key, waitFor(function (err, _res) {
                         if (err || !_res.content) {
                             _waitFor.abort();
-                            return void waitFor.abort();
+                            return void cb(err);
                         }
                         res = _res;
                     }));

www/common/drive-ui.js

@@ -1730,7 +1730,9 @@ define([
                     && $target.parents('#cp-app-drive-content')) {
                 newPath = currentPath;
             }
-            if (newPath[0] !== ROOT) { newPath = [ROOT]; }
+            // XXX Why did we add the following line?
+            // https://github.com/xwiki-labs/cryptpad/commit/f103a0fb08d137901174ef7e15dbc2c9a2ec3ca1
+            //if (newPath[0] !== ROOT) { newPath = [ROOT]; }
             return newPath;
         };
         var onFileDrop = APP.onFileDrop = function (file, e) {

www/common/sframe-common-outer.js

@@ -1600,7 +1600,16 @@ define([
                         // server
                         Cryptpad.useTemplate({
                             href: data.template
-                        }, Cryptget, function () {
+                        }, Cryptget, function (err) {
+                            if (err) {
+                                // TODO: better messages in case of expired, deleted, etc.?
+                                if (err === 'ERESTRICTED') {
+                                    sframeChan.event('EV_RESTRICTED_ERROR');
+                                } else {
+                                    sframeChan.query("EV_LOADING_ERROR", "DELETED");
+                                }
+                                return;
+                            }
                             startRealtime();
                             cb();
                         }, cryptputCfg);
@@ -1608,7 +1617,16 @@ define([
                     }
                     // if we open a new code from a file
                     if (Cryptpad.fromFileData) {
-                        Cryptpad.useFile(Cryptget, function () {
+                        Cryptpad.useFile(Cryptget, function (err) {
+                            if (err) {
+                                // TODO: better messages in case of expired, deleted, etc.?
+                                if (err === 'ERESTRICTED') {
+                                    sframeChan.event('EV_RESTRICTED_ERROR');
+                                } else {
+                                    sframeChan.query("EV_LOADING_ERROR", "DELETED");
+                                }
+                                return;
+                            }
                             startRealtime();
                             cb();
                         }, cryptputCfg);