Add a plugin feature registration callback for SIM/AKA backends

src/libsimaka/simaka_manager.c

@@ -531,3 +531,88 @@ simaka_manager_t *simaka_manager_create()
 
 	return &this->public;
 }
+
+/**
+ * (Un-)register a provider to a simaka manager
+ */
+static bool register_card(char *mgr_name, bool reg, simaka_card_t *card)
+{
+	simaka_manager_t *mgr;
+
+	if (!card)
+	{
+		return FALSE;
+	}
+	mgr = lib->get(lib, mgr_name);
+	if (mgr)
+	{
+		if (reg)
+		{
+			mgr->add_card(mgr, card);
+		}
+		else
+		{
+			mgr->remove_card(mgr, card);
+		}
+		return TRUE;
+	}
+	return FALSE;
+}
+
+/**
+ * (Un-)register a provider to a simaka manager
+ */
+static bool register_provider(char *mgr_name, bool reg,
+							  simaka_provider_t *provider)
+{
+	simaka_manager_t *mgr;
+
+	if (!provider)
+	{
+		return FALSE;
+	}
+	mgr = lib->get(lib, mgr_name);
+	if (mgr)
+	{
+		if (reg)
+		{
+			mgr->add_provider(mgr, provider);
+		}
+		else
+		{
+			mgr->remove_provider(mgr, provider);
+		}
+		return TRUE;
+	}
+	return FALSE;
+}
+
+/**
+ * See header
+ */
+bool simaka_manager_register(plugin_t *plugin, plugin_feature_t *feature,
+							 bool reg, void *data)
+{
+	simaka_manager_register_cb_t get = (simaka_manager_register_cb_t)data;
+
+	if (feature->type == FEATURE_CUSTOM)
+	{
+		if (streq(feature->arg.custom, "aka-card"))
+		{
+			return register_card("aka-manager", reg, get(plugin));
+		}
+		else if (streq(feature->arg.custom, "aka-provider"))
+		{
+			return register_provider("aka-manager", reg, get(plugin));
+		}
+		else if (streq(feature->arg.custom, "sim-card"))
+		{
+			return register_card("sim-manager", reg, get(plugin));
+		}
+		else if (streq(feature->arg.custom, "sim-provider"))
+		{
+			return register_provider("sim-manager", reg, get(plugin));
+		}
+	}
+	return FALSE;
+}

src/libsimaka/simaka_manager.h

@@ -24,6 +24,7 @@
 #include <crypto/hashers/hasher.h>
 #include <utils/identification.h>
 #include <utils/enumerator.h>
+#include <plugins/plugin.h>
 
 typedef struct simaka_manager_t simaka_manager_t;
 
@@ -284,4 +285,26 @@ struct simaka_manager_t {
  */
 simaka_manager_t *simaka_manager_create();
 
+/**
+ * Callback for the simaka_manager_register_cb_t, provides backend to register.
+ *
+ * @param plugin		plugin registering a backend (card or provider)
+ * @return				a simaka_card_t* or simaka_provider_t*, NULL on failure
+ */
+typedef void* (*simaka_manager_register_cb_t)(plugin_t *plugin);
+
+/**
+ * Helper function to (un-)register SIM/AKA backend plugin features.
+ *
+ * This function is a plugin_feature_callback_t and can be used with the
+ * PLUGIN_CALLBACK macro to register a SIM/AKA backend.
+ *
+ * @param plugin		plugin registering the SIM/AKA backend
+ * @param feature		associated plugin feature
+ * @param reg			TRUE to register, FALSE to unregister.
+ * @param data			data passed to callback, an simaka_manager_register_cb_t
+ */
+bool simaka_manager_register(plugin_t *plugin, plugin_feature_t *feature,
+							 bool reg, void *data);
+
 #endif /** SIMAKA_MANAGER_H_ @}*/