providing medation configuration through med_db plugin

src/charon/plugins/med_db/Makefile.am

@@ -6,6 +6,7 @@ AM_CFLAGS = -rdynamic
 plugin_LTLIBRARIES = libcharon-med-db.la
 libcharon_med_db_la_SOURCES = med_db_plugin.h med_db_plugin.c \
 			      med_db_creds.h med_db_creds.c \
+			      med_db_config.h med_db_config.c \
 			      med_db_pubkey.h med_db_pubkey.c
 libcharon_med_db_la_LDFLAGS = -module
 

src/charon/plugins/med_db/med_db_config.c

@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2008 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * $Id$
+ */
+
+#include <string.h>
+
+#include "med_db_config.h"
+
+#include <daemon.h>
+
+typedef struct private_med_db_config_t private_med_db_config_t;
+
+/**
+ * Private data of an med_db_config_t object
+ */
+struct private_med_db_config_t {
+
+	/**
+	 * Public part
+	 */
+	med_db_config_t public;
+	
+	/**
+	 * database connection
+	 */
+	database_t *db;
+	
+	/**
+	 * rekey time
+	 */
+	int rekey;
+	
+	/**
+	 * dpd delay
+	 */
+	int dpd;
+	
+	/**
+	 * default ike config
+	 */
+	ike_cfg_t *ike;
+};
+
+/**
+ * implements backend_t.get_peer_cfg_by_name.
+ */
+static peer_cfg_t *get_peer_cfg_by_name(private_med_db_config_t *this, char *name)
+{
+	return NULL;
+}
+
+/**
+ * Implementation of backend_t.create_ike_cfg_enumerator.
+ */
+static enumerator_t* create_ike_cfg_enumerator(private_med_db_config_t *this,
+											   host_t *me, host_t *other)
+{
+	return enumerator_create_single(this->ike, NULL);
+}
+
+/**
+ * Implementation of backend_t.create_peer_cfg_enumerator.
+ */
+static enumerator_t* create_peer_cfg_enumerator(private_med_db_config_t *this,
+												identification_t *me,
+												identification_t *other)
+{
+	enumerator_t *e;
+	
+	if (!me || !other || other->get_type(other) != ID_KEY_ID)
+	{
+		return NULL;
+	}
+	e = this->db->query(this->db,
+			"SELECT CONCAT(Peer.Alias, CONCAT('@', User.Login)) FROM "
+			"Peer JOIN User ON Peer.IdUser = User.IdUser "
+			"WHERE Peer.KeyID = ?", DB_BLOB, other->get_encoding(other),
+			DB_TEXT);
+	if (e)
+	{
+		peer_cfg_t *peer_cfg;
+		char *name;
+		
+		if (e->enumerate(e, &name))
+		{
+			peer_cfg = peer_cfg_create(
+				name, 2, this->ike->get_ref(this->ike),
+				me->clone(me), other->clone(other),
+				CERT_NEVER_SEND, UNIQUE_REPLACE, AUTH_RSA,
+				0, 0, 							/* EAP method, vendor */
+				1, this->rekey*60, 0,  			/* keytries, rekey, reauth */
+				this->rekey*5, this->rekey*3, 	/* jitter, overtime */
+				TRUE, this->dpd, 				/* mobike, dpddelay */
+				NULL, NULL, 					/* vip, pool */
+				TRUE, NULL, NULL); 				/* mediation, med by, peer id */
+			e->destroy(e);
+			return enumerator_create_single(peer_cfg, (void*)peer_cfg->destroy);
+		}
+		e->destroy(e);
+	}
+	return NULL;
+}
+
+/**
+ * Implementation of med_db_config_t.destroy.
+ */
+static void destroy(private_med_db_config_t *this)
+{
+	this->ike->destroy(this->ike);
+	free(this);
+}
+
+/**
+ * Described in header.
+ */
+med_db_config_t *med_db_config_create(database_t *db)
+{
+	private_med_db_config_t *this = malloc_thing(private_med_db_config_t);
+
+	this->public.backend.create_peer_cfg_enumerator = (enumerator_t*(*)(backend_t*, identification_t *me, identification_t *other))create_peer_cfg_enumerator;
+	this->public.backend.create_ike_cfg_enumerator = (enumerator_t*(*)(backend_t*, host_t *me, host_t *other))create_ike_cfg_enumerator;
+	this->public.backend.get_peer_cfg_by_name = (peer_cfg_t* (*)(backend_t*,char*))get_peer_cfg_by_name;
+	this->public.destroy = (void(*)(med_db_config_t*))destroy;
+	
+	this->db = db;
+	this->rekey = lib->settings->get_int(lib->settings,
+										 "medmanager.rekey", 20) * 60;
+	this->dpd = lib->settings->get_int(lib->settings, "medmanager.dpd", 300);
+	this->ike = ike_cfg_create(FALSE, FALSE, host_create_any(AF_INET),
+							   host_create_any(AF_INET));
+	this->ike->add_proposal(this->ike, proposal_create_default(PROTO_IKE));
+	
+	return &this->public;
+}
+

src/charon/plugins/med_db/med_db_config.h

@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2008 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * $Id$
+ */
+
+/**
+ * @defgroup med_db_config_i med_db_config
+ * @{ @ingroup med_db
+ */
+
+#ifndef MED_DB_CONFIG_H_
+#define MED_DB_CONFIG_H_
+
+#include <config/backend.h>
+#include <database/database.h>
+
+typedef struct med_db_config_t med_db_config_t;
+
+/**
+ * Mediation server configuration backend.
+ */
+struct med_db_config_t {
+
+	/**
+	 * Implements backend_t interface
+	 */
+	backend_t backend;
+	
+	/**
+	 * Destroy the backend.
+	 */
+	void (*destroy)(med_db_config_t *this);	
+};
+
+/**
+ * Create a med_db_config backend instance.
+ *
+ * @param db		underlying database
+ * @return			backend instance
+ */
+med_db_config_t *med_db_config_create(database_t *db);
+
+#endif /* MED_DB_CONFIG_H_ @}*/

src/charon/plugins/med_db/med_db_plugin.c

@@ -18,6 +18,7 @@
 #include "med_db_plugin.h"
 
 #include "med_db_creds.h"
+#include "med_db_config.h"
 
 #include <daemon.h>
 
@@ -42,6 +43,11 @@ struct private_med_db_plugin_t {
 	 * med_db credential set instance
 	 */
 	med_db_creds_t *creds;
+	
+	/**
+	 * med_db config database
+	 */
+	med_db_config_t *config;
 };
 
 /**
@@ -49,7 +55,9 @@ struct private_med_db_plugin_t {
  */
 static void destroy(private_med_db_plugin_t *this)
 {
+	charon->backends->remove_backend(charon->backends, &this->config->backend);
 	charon->credentials->remove_set(charon->credentials, &this->creds->set);
+	this->config->destroy(this->config);
 	this->creds->destroy(this->creds);
 	this->db->destroy(this->db);
 	free(this);
@@ -66,7 +74,7 @@ plugin_t *plugin_create()
 	this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
 	
 	uri = lib->settings->get_str(lib->settings,
-								 "charon.plugins.med_db.database", NULL);
+								 "medmanager.database", NULL);
 	if (!uri)
 	{
 		DBG1(DBG_CFG, "mediation database URI not defined, skipped");
@@ -83,8 +91,10 @@ plugin_t *plugin_create()
 	}
 	
 	this->creds = med_db_creds_create(this->db);
+	this->config = med_db_config_create(this->db);
 	
 	charon->credentials->add_set(charon->credentials, &this->creds->set);
+	charon->backends->add_backend(charon->backends, &this->config->backend);
 	
 	return &this->public.plugin;
 }