From 0ade1d64a2c32b47372f744ee7b76ed144e4cfcd Mon Sep 17 00:00:00 2001
From: michael starke <michael.starke@hicknhack-software.com>
Date: Thu, 24 Mar 2016 16:01:03 +0100
Subject: [PATCH] Plugins cannot be loaded more than once

---
 MacPass/MPPluginManager.m | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/MacPass/MPPluginManager.m b/MacPass/MPPluginManager.m
index 064999dc..c91e934b 100644
--- a/MacPass/MPPluginManager.m
+++ b/MacPass/MPPluginManager.m
@@ -111,6 +111,11 @@ NSString *const MPPluginManagerPluginBundleIdentifiyerKey = @"MPPluginManagerPlu
       continue;
     };
     
+    if([self _validateBundle:pluginBundle]) {
+      NSLog(@"Plugin %@ already loaded!", pluginBundle.bundleIdentifier);
+      continue;
+    }
+    
     if(![pluginBundle loadAndReturnError:&error]) {
       NSLog(@"Bunlde Loading Error %@ %@", error.localizedDescription, error.localizedFailureReason);
       continue;
@@ -137,6 +142,16 @@ NSString *const MPPluginManagerPluginBundleIdentifiyerKey = @"MPPluginManagerPlu
   }
 }
 
+- (BOOL)_validateBundle:(NSBundle *)bundle {
+  for(MPPlugin *plugin in self.mutablePlugins) {
+    NSBundle *pluginBundle = [NSBundle bundleForClass:plugin.class];
+    if([pluginBundle.bundleIdentifier isEqualToString:bundle.bundleIdentifier]) {
+      return YES;
+    }
+  }
+  return NO;
+}
+
 - (BOOL)_validURL:(NSURL *)url {
   return (NSOrderedSame == [url.pathExtension compare:kMPPluginFileExtension options:NSCaseInsensitiveSearch]);
 }