added filter:post.uploadFile

src/posts.js

@@ -410,6 +410,10 @@ var db = require('./database'),
 
 	Posts.uploadPostFile = function(file, callback) {
 
+		if(plugins.hasListeners('filter:post.uploadFile')) {
+			plugins.fireHook('filter:post.uploadFile', file, callback);
+		} else {
+
 			if(!meta.config.allowFileUploads) {
 				return callback(new Error('File uploads are not allowed'));
 			}
@@ -438,6 +442,7 @@ var db = require('./database'),
 				});
 			});
 		}
+	}
 
 	Posts.reIndexPids = function(pids, callback) {