CB-7912: Update to work with whitelist plugins in Cordova 4.x

src/android/FileTransfer.java

@@ -55,6 +55,7 @@ import org.apache.cordova.CordovaResourceApi;
 import org.apache.cordova.CordovaResourceApi.OpenForReadResult;
 import org.apache.cordova.PluginManager;
 import org.apache.cordova.PluginResult;
+import org.apache.cordova.Whitelist;
 import org.apache.cordova.file.FileUtils;
 import org.json.JSONArray;
 import org.json.JSONException;
@@ -687,9 +688,39 @@ public class FileTransfer extends CordovaPlugin {
             callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.IO_EXCEPTION, error));
             return;
         }
-        
+
-        // TODO: refactor to also allow resources & content:
+        /* This code exists for compatibility between 3.x and 4.x versions of Cordova.
-        if (!isLocalTransfer && !Config.isUrlWhiteListed(source)) {
+         * Previously the CordovaWebView class had a method, getWhitelist, which would
+         * return a Whitelist object. Since the fixed whitelist is removed in Cordova 4.x,
+         * the correct call now is to shouldAllowRequest from the plugin manager.
+         */
+        Boolean shouldAllowRequest = null;
+        if (isLocalTransfer) {
+            shouldAllowRequest = true;
+        }
+        if (shouldAllowRequest == null) {
+            try {
+                Method gwl = webView.getClass().getMethod("getWhitelist");
+                Whitelist whitelist = (Whitelist)gwl.invoke(webView);
+                shouldAllowRequest = whitelist.isUrlWhiteListed(source);
+            } catch (NoSuchMethodException e) {
+            } catch (IllegalAccessException e) {
+            } catch (InvocationTargetException e) {
+            }
+        }
+        if (shouldAllowRequest == null) {
+            try {
+                Method gpm = webView.getClass().getMethod("getPluginManager");
+                PluginManager pm = (PluginManager)gpm.invoke(webView);
+                Method san = pm.getClass().getMethod("shouldAllowRequest", String.class);
+                shouldAllowRequest = (Boolean)san.invoke(pm, source);
+            } catch (NoSuchMethodException e) {
+            } catch (IllegalAccessException e) {
+            } catch (InvocationTargetException e) {
+            }
+        }
+
+        if (!Boolean.TRUE.equals(shouldAllowRequest)) {
             Log.w(LOG_TAG, "Source URL is not in white list: '" + source + "'");
             JSONObject error = createFileTransferError(CONNECTION_ERR, source, target, null, 401, null);
             callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.IO_EXCEPTION, error));