2 files changed, 115 insertions, 0 deletions

diff --git a/src/libstrongswan/plugins/plugin_loader.c b/src/libstrongswan/plugins/plugin_loader.c
index d4c92468a..d5777e35b 100644
--- a/src/libstrongswan/plugins/plugin_loader.c
+++ b/src/libstrongswan/plugins/plugin_loader.c
@@ -105,6 +105,78 @@ static void plugin_entry_destroy(plugin_entry_t *entry)
 }
 
 /**
+ * Wrapper for static plugin features
+ */
+typedef struct {
+
+	/**
+	 * Implements plugin_t interface
+	 */
+	plugin_t public;
+
+	/**
+	 * Name of the module registering these features
+	 */
+	char *name;
+
+	/**
+	 * Static plugin features
+	 */
+	plugin_feature_t *features;
+
+	/**
+	 * Number of plugin features
+	 */
+	int count;
+
+} static_features_t;
+
+METHOD(plugin_t, get_static_name, char*,
+	static_features_t *this)
+{
+	return this->name;
+}
+
+METHOD(plugin_t, get_static_features, int,
+	static_features_t *this, plugin_feature_t *features[])
+{
+	*features = this->features;
+	return this->count;
+}
+
+METHOD(plugin_t, static_destroy, void,
+	static_features_t *this)
+{
+	free(this->features);
+	free(this->name);
+	free(this);
+}
+
+/**
+ * Create a wrapper around static plugin features.
+ */
+static plugin_t *static_features_create(const char *name,
+										plugin_feature_t features[], int count)
+{
+	static_features_t *this;
+
+	INIT(this,
+		.public = {
+			.get_name = _get_static_name,
+			.get_features = _get_static_features,
+			.destroy = _static_destroy,
+		},
+		.name = strdup(name),
+		.features = calloc(count, sizeof(plugin_feature_t)),
+		.count = count,
+	);
+
+	memcpy(this->features, features, sizeof(plugin_feature_t) * count);
+
+	return &this->public;
+}
+
+/**
  * Compare function for hashtable of loaded features.
  */
 static bool plugin_feature_equals(plugin_feature_t *a, plugin_feature_t *b)
@@ -554,6 +626,24 @@ static void purge_plugins(private_plugin_loader_t *this)
 	enumerator->destroy(enumerator);
 }
 
+METHOD(plugin_loader_t, add_static_features, void,
+	private_plugin_loader_t *this, const char *name,
+	plugin_feature_t features[], int count, bool critical)
+{
+	plugin_entry_t *entry;
+	plugin_t *plugin;
+
+	plugin = static_features_create(name, features, count);
+
+	INIT(entry,
+		.plugin = plugin,
+		.critical = critical,
+		.loaded = linked_list_create(),
+		.failed = linked_list_create(),
+	);
+	this->plugins->insert_last(this->plugins, entry);
+}
+
 METHOD(plugin_loader_t, load_plugins, bool,
 	private_plugin_loader_t *this, char *path, char *list)
 {
@@ -740,6 +830,7 @@ plugin_loader_t *plugin_loader_create()
 
 	INIT(this,
 		.public = {
+			.add_static_features = _add_static_features,
 			.load = _load_plugins,
 			.reload = _reload,
 			.unload = _unload,
diff --git a/src/libstrongswan/plugins/plugin_loader.h b/src/libstrongswan/plugins/plugin_loader.h
index 7fd07044d..94181dbb6 100644
--- a/src/libstrongswan/plugins/plugin_loader.h
+++ b/src/libstrongswan/plugins/plugin_loader.h
@@ -26,12 +26,36 @@ typedef struct plugin_loader_t plugin_loader_t;
 
 #include <utils/enumerator.h>
 
+/* to avoid circular references we can't include plugin_feature.h */
+struct plugin_feature_t;
+
 /**
  * The plugin_loader loads plugins from a directory and initializes them
  */
 struct plugin_loader_t {
 
 	/**
+	 * Add static plugin features, not loaded via plugins.
+	 *
+	 * Similar to features provided by plugins they are evaluated during load(),
+	 * and unloaded when unload() is called.
+	 *
+	 * If critical is TRUE load() will fail if any of the added features could
+	 * not be loaded.
+	 *
+	 * @note The name should be unique otherwise a plugin with the same name is
+	 * not loaded.
+	 *
+	 * @param name			name of the component adding the features
+	 * @param features		array of plugin features
+	 * @param count			number of features in the array
+	 * @param critical		TRUE if the features are critical
+	 */
+	void (*add_static_features) (plugin_loader_t *this, const char *name,
+								 struct plugin_feature_t *features, int count,
+								 bool critical);
+
+	/**
 	 * Load a list of plugins from a directory.
 	 *
 	 * Each plugin in list may have a ending exclamation mark (!) to mark it