Merge remote-tracking branch 'origin/topic/johanna/component-initialization-order'

* origin/topic/johanna/component-initialization-order:
  Make tags generated during component initialization stable.

CHANGES

@@ -1,4 +1,16 @@
 
+2.4-927 | 2016-08-11 21:49:06 -0700
+
+  * Make component tags generated during component initialization stable.
+    Before, it was dependent on the order a compiler called constructors.
+    This makes a few tests work with gcc. (Johanna Amann)
+
+  * Make x509 intel seen script more robust (Johanna Amann)
+
+  * Input: DisableFrontend was not called upon Init failure. (Johanna Amann)
+
+  * DCE_RPC code simplification. (Seth Hall)
+
 2.4-921 | 2016-08-10 20:29:48 -0700
 
   * Add logging framework ext-data mechanism. It is now possible to

VERSION

@@ -1 +1 @@
-2.4-921
+2.4-927

src/analyzer/Component.cc

@@ -15,7 +15,11 @@ Component::Component(const std::string& name, factory_callback arg_factory, Tag:
 	factory = arg_factory;
 	enabled = arg_enabled;
 	partial = arg_partial;
+	}
 
+void Component::Initialize()
+	{
+	InitializeTag();
 	analyzer_mgr->RegisterComponent(this, "ANALYZER_");
 	}
 

src/analyzer/Component.h

@@ -63,6 +63,13 @@ public:
 	 */
 	~Component();
 
+	/**
+	 * Initialization function. This function has to be called before any
+	 * plugin component functionality is used; it is used to add the
+	 * plugin component to the list of components and to initialize tags
+	 */
+	void Initialize() override;
+
 	/**
 	 * Returns the analyzer's factory function.
 	 */
@@ -93,7 +100,7 @@ protected:
 	/**
 	  * Overriden from plugin::Component.
 	  */
-	virtual void DoDescribe(ODesc* d) const;
+	void DoDescribe(ODesc* d) const override;
 
 private:
 	factory_callback factory;	// The analyzer's factory callback.

src/file_analysis/Component.cc

@@ -13,7 +13,11 @@ Component::Component(const std::string& name, factory_callback arg_factory, Tag:
 	  plugin::TaggedComponent<file_analysis::Tag>(subtype)
 	{
 	factory = arg_factory;
+	}
 
+void Component::Initialize()
+	{
+	InitializeTag();
 	file_mgr->RegisterComponent(this, "ANALYZER_");
 	}
 

src/file_analysis/Component.h

@@ -54,6 +54,13 @@ public:
 	 */
 	~Component();
 
+	/**
+	 * Initialization function. This function has to be called before any
+	 * plugin component functionality is used; it is used to add the
+	 * plugin component to the list of components and to initialize tags
+	 */
+	void Initialize() override;
+
 	/**
 	 * Returns the analyzer's factory function.
 	 */
@@ -63,7 +70,7 @@ protected:
 	/**
 	  * Overriden from plugin::Component.
 	  */
-	virtual void DoDescribe(ODesc* d) const;
+	void DoDescribe(ODesc* d) const override;
 
 private:
 	factory_callback factory;	// The analyzer's factory callback.

src/input/Component.cc

@@ -12,7 +12,11 @@ Component::Component(const std::string& name, factory_callback arg_factory)
 	: plugin::Component(plugin::component::READER, name)
 	{
 	factory = arg_factory;
+	}
 
+void Component::Initialize()
+	{
+	InitializeTag();
 	input_mgr->RegisterComponent(this, "READER_");
 	}
 

src/input/Component.h

@@ -39,6 +39,13 @@ public:
 	 */
 	~Component();
 
+	/**
+	 * Initialization function. This function has to be called before any
+	 * plugin component functionality is used; it is used to add the
+	 * plugin component to the list of components and to initialize tags
+	 */
+	void Initialize() override;
+
 	/**
 	 * Returns the reader's factory function.
 	 */
@@ -48,7 +55,7 @@ protected:
 	/**
 	  * Overriden from plugin::Component.
 	  */
-	virtual void DoDescribe(ODesc* d) const;
+	void DoDescribe(ODesc* d) const override;
 
 private:
 	factory_callback factory;

src/logging/Component.cc

@@ -11,7 +11,11 @@ Component::Component(const std::string& name, factory_callback arg_factory)
 	: plugin::Component(plugin::component::WRITER, name)
 	{
 	factory = arg_factory;
+	}
 
+void Component::Initialize()
+	{
+	InitializeTag();
 	log_mgr->RegisterComponent(this, "WRITER_");
 	}
 

src/logging/Component.h

@@ -39,6 +39,13 @@ public:
 	 */
 	~Component();
 
+	/**
+	 * Initialization function. This function has to be called before any
+	 * plugin component functionality is used; it is used to add the
+	 * plugin component to the list of components and to initialize tags
+	 */
+	void Initialize() override;
+
 	/**
 	 * Returns the writer's factory function.
 	 */
@@ -48,7 +55,7 @@ protected:
 	/**
 	  * Overriden from plugin::Component.
 	  */
-	virtual void DoDescribe(ODesc* d) const;
+	void DoDescribe(ODesc* d) const override;
 
 private:
 	factory_callback factory;

src/plugin/Component.h

@@ -48,6 +48,13 @@ public:
 	 */
 	virtual ~Component();
 
+	/**
+	 * Initialization function. This function has to be called before any
+	 * plugin component functionality is used; it commonly is used to add the
+	 * plugin component to the list of components and to initialize tags
+	 */
+	virtual void Initialize() {}
+
 	/**
 	 * Returns the compoment's type.
 	 */

src/plugin/Manager.cc

@@ -238,6 +238,7 @@ bool Manager::ActivateDynamicPluginInternal(const std::string& name, bool ok_if_
 
 			current_plugin->SetDynamic(true);
 			current_plugin->DoConfigure();
+			current_plugin->InitializeComponents();
 
 			if ( current_plugin->APIVersion() != BRO_PLUGIN_API_VERSION )
 				reporter->FatalError("plugin's API version does not match Bro (expected %d, got %d in %s)",
@@ -328,9 +329,6 @@ void Manager::RegisterPlugin(Plugin *plugin)
 		// A dynamic plugin, record its location.
 		plugin->SetPluginLocation(current_dir, current_sopath);
 
-	// Sort plugins by name to make sure we have a deterministic order.
-	ActivePluginsInternal()->sort(plugin_cmp);
-
 	current_plugin = plugin;
 	}
 
@@ -354,9 +352,21 @@ void Manager::InitPreScript()
 	for ( plugin_list::iterator i = Manager::ActivePluginsInternal()->begin();
 	      i != Manager::ActivePluginsInternal()->end(); i++ )
 		{
-		Plugin* plugin = *i;
-		plugin->DoConfigure();
-		plugin->InitPreScript();
+		(*i)->DoConfigure();
+		}
+
+	// Sort plugins by name to make sure we have a deterministic order.
+	// We cannot do this before, because the plugin name (used for plugin_cmp) is only
+	// set in DoConfigure.
+	// We need things sorted to generate the tags (in InitializeComponents) in a deterministic
+	// order.
+	ActivePluginsInternal()->sort(plugin_cmp);
+
+	for ( plugin_list::iterator i = Manager::ActivePluginsInternal()->begin();
+	      i != Manager::ActivePluginsInternal()->end(); i++ )
+		{
+		(*i)->InitializeComponents();
+		(*i)->InitPreScript();
 		}
 
 	init = true;

src/plugin/Plugin.cc

@@ -327,6 +327,12 @@ void Plugin::MetaHookPost(HookType hook, const HookArgumentList& args, HookArgum
 	{
 	}
 
+void Plugin::InitializeComponents()
+	{
+	for ( component_list::const_iterator i = components.begin(); i != components.end(); i++ )
+		(*i)->Initialize();
+	}
+
 void Plugin::Describe(ODesc* d) const
 	{
 	d->Add(config.name);

src/plugin/Plugin.h

@@ -492,12 +492,17 @@ protected:
 	virtual void Done();
 
 	/**
-	 * Registers and activates a component.
+	 * Registers a component.
 	 *
 	 * @param c The component. The method takes ownership.
 	 */
 	void AddComponent(Component* c);
 
+	/**
+	 * Calls the Initialize() function of all components.
+	 */
+	void InitializeComponents();
+
 	/**
 	 * Enables a hook. The corresponding virtual method will now be
 	 * called as Bro's processing proceeds. Note that enabling hooks can

src/plugin/TaggedComponent.h

@@ -13,7 +13,9 @@ class TaggedComponent {
 public:
 
 	/**
-	 * Constructor creates a unique tag value for this component.
+	 * Constructor for TaggedComponend. Note that a unique value
+	 * for this component is only created when InitializeTag is
+	 * called.
 	 *
 	 * @param subtype A subtype associated with this component that
 	 * further distinguishes it. The subtype will be integrated into
@@ -23,6 +25,12 @@ public:
 	 */
 	TaggedComponent(typename T::subtype_t subtype = 0);
 
+	/**
+	 * Initializes tag by creating the unique tag value for thos componend.
+	 * Has to be called exactly once.
+	 */
+	void InitializeTag();
+
 	/**
 	 * @return The component's tag.
 	 */
@@ -30,6 +38,8 @@ public:
 
 private:
 	T tag; /**< The automatically assigned analyzer tag. */
+	typename T::subtype_t subtype;
+	bool initialized;
 	static typename T::type_t type_counter; /**< Used to generate globally
 	                                             unique tags. */
 };
@@ -37,12 +47,23 @@ private:
 template <class T>
 TaggedComponent<T>::TaggedComponent(typename T::subtype_t subtype)
 	{
+	tag = T(1,0);
+	this->subtype = subtype;
+	initialized = false;
+	}
+
+template <class T>
+void TaggedComponent<T>::InitializeTag()
+	{
+	assert( initialized == false );
+	initialized = true;
 	tag = T(++type_counter, subtype);
 	}
 
 template <class T>
 T TaggedComponent<T>::Tag() const
 	{
+	assert( initialized );
 	return tag;
 	}