[svn-upgrade] Integrating new upstream version, strongswan (4.4.0)

1 files changed, 407 insertions, 0 deletions

diff --git a/src/libcharon/plugins/medcli/medcli_config.c b/src/libcharon/plugins/medcli/medcli_config.c
new file mode 100644
index 000000000..e355d55f7
--- /dev/null
+++ b/src/libcharon/plugins/medcli/medcli_config.c
@@ -0,0 +1,407 @@
+/*
+ * 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.
+ */
+
+#define _GNU_SOURCE
+#include <string.h>
+
+#include "medcli_config.h"
+
+#include <daemon.h>
+#include <processing/jobs/callback_job.h>
+
+typedef struct private_medcli_config_t private_medcli_config_t;
+
+/**
+ * Private data of an medcli_config_t object
+ */
+struct private_medcli_config_t {
+
+	/**
+	 * Public part
+	 */
+	medcli_config_t public;
+
+	/**
+	 * database connection
+	 */
+	database_t *db;
+
+	/**
+	 * rekey time
+	 */
+	int rekey;
+
+	/**
+	 * dpd delay
+	 */
+	int dpd;
+
+	/**
+	 * default ike config
+	 */
+	ike_cfg_t *ike;
+};
+
+/**
+ * create a traffic selector from a CIDR notation string
+ */
+static traffic_selector_t *ts_from_string(char *str)
+{
+	if (str)
+	{
+		int netbits = 32;
+		host_t *net;
+		char *pos;
+
+		str = strdupa(str);
+		pos = strchr(str, '/');
+		if (pos)
+		{
+			*pos++ = '\0';
+			netbits = atoi(pos);
+		}
+		else
+		{
+			if (strchr(str, ':'))
+			{
+				netbits = 128;
+			}
+		}
+		net = host_create_from_string(str, 0);
+		if (net)
+		{
+			return traffic_selector_create_from_subnet(net, netbits, 0, 0);
+		}
+	}
+	return traffic_selector_create_dynamic(0, 0, 65535);
+}
+
+/**
+ * implements backend_t.get_peer_cfg_by_name.
+ */
+static peer_cfg_t *get_peer_cfg_by_name(private_medcli_config_t *this, char *name)
+{
+	enumerator_t *e;
+	peer_cfg_t *peer_cfg, *med_cfg;
+	auth_cfg_t *auth;
+	ike_cfg_t *ike_cfg;
+	child_cfg_t *child_cfg;
+	chunk_t me, other;
+	char *address, *local_net, *remote_net;
+	lifetime_cfg_t lifetime = {
+		.time = {
+			.life = this->rekey * 60 + this->rekey,
+			.rekey = this->rekey,
+			.jitter = this->rekey
+		}
+	};
+
+	/* query mediation server config:
+	 * - build ike_cfg/peer_cfg for mediation connection on-the-fly
+	 */
+	e = this->db->query(this->db,
+			"SELECT Address, ClientConfig.KeyId, MediationServerConfig.KeyId "
+			"FROM MediationServerConfig JOIN ClientConfig",
+			DB_TEXT, DB_BLOB, DB_BLOB);
+	if (!e || !e->enumerate(e, &address, &me, &other))
+	{
+		DESTROY_IF(e);
+		return NULL;
+	}
+	ike_cfg = ike_cfg_create(FALSE, FALSE,
+						"0.0.0.0", IKEV2_UDP_PORT, address, IKEV2_UDP_PORT);
+	ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE));
+	med_cfg = peer_cfg_create(
+		"mediation", 2, ike_cfg,
+		CERT_NEVER_SEND, UNIQUE_REPLACE,
+		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);
+
+	auth = auth_cfg_create();
+	auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
+	auth->add(auth, AUTH_RULE_IDENTITY,
+			  identification_create_from_encoding(ID_KEY_ID, me));
+	med_cfg->add_auth_cfg(med_cfg, auth, TRUE);
+	auth = auth_cfg_create();
+	auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
+	auth->add(auth, AUTH_RULE_IDENTITY,
+			  identification_create_from_encoding(ID_KEY_ID, other));
+	med_cfg->add_auth_cfg(med_cfg, auth, FALSE);
+
+	/* query mediated config:
+	 * - use any-any ike_cfg
+	 * - build peer_cfg on-the-fly using med_cfg
+	 * - add a child_cfg
+	 */
+	e = this->db->query(this->db,
+			"SELECT ClientConfig.KeyId, Connection.KeyId, "
+			"Connection.LocalSubnet, Connection.RemoteSubnet "
+			"FROM ClientConfig JOIN Connection "
+			"WHERE Active AND Alias = ?", DB_TEXT, name,
+			DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
+	if (!e || !e->enumerate(e, &me, &other, &local_net, &remote_net))
+	{
+		DESTROY_IF(e);
+		return NULL;
+	}
+	peer_cfg = peer_cfg_create(
+		name, 2, this->ike->get_ref(this->ike),
+		CERT_NEVER_SEND, UNIQUE_REPLACE,
+		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 */
+		FALSE, med_cfg,					/* mediation, med by */
+		identification_create_from_encoding(ID_KEY_ID, other));
+
+	auth = auth_cfg_create();
+	auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
+	auth->add(auth, AUTH_RULE_IDENTITY,
+			  identification_create_from_encoding(ID_KEY_ID, me));
+	peer_cfg->add_auth_cfg(peer_cfg, auth, TRUE);
+	auth = auth_cfg_create();
+	auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
+	auth->add(auth, AUTH_RULE_IDENTITY,
+			  identification_create_from_encoding(ID_KEY_ID, other));
+	peer_cfg->add_auth_cfg(peer_cfg, auth, FALSE);
+
+	child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE,
+							  MODE_TUNNEL, ACTION_NONE, ACTION_NONE, FALSE, 0);
+	child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
+	child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
+	child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
+	peer_cfg->add_child_cfg(peer_cfg, child_cfg);
+	e->destroy(e);
+	return peer_cfg;
+}
+
+/**
+ * Implementation of backend_t.create_ike_cfg_enumerator.
+ */
+static enumerator_t* create_ike_cfg_enumerator(private_medcli_config_t *this,
+											   host_t *me, host_t *other)
+{
+	return enumerator_create_single(this->ike, NULL);
+}
+
+typedef struct {
+	/** implements enumerator */
+	enumerator_t public;
+	/** inner SQL enumerator */
+	enumerator_t *inner;
+	/** currently enumerated peer config */
+	peer_cfg_t *current;
+	/** ike cfg to use in peer cfg */
+	ike_cfg_t *ike;
+	/** rekey time */
+	int rekey;
+	/** dpd time */
+	int dpd;
+} peer_enumerator_t;
+
+/**
+ * Implementation of peer_enumerator_t.public.enumerate
+ */
+static bool peer_enumerator_enumerate(peer_enumerator_t *this, peer_cfg_t **cfg)
+{
+	char *name, *local_net, *remote_net;
+	chunk_t me, other;
+	child_cfg_t *child_cfg;
+	auth_cfg_t *auth;
+	lifetime_cfg_t lifetime = {
+		.time = {
+			.life = this->rekey * 60 + this->rekey,
+			.rekey = this->rekey,
+			.jitter = this->rekey
+		}
+	};
+
+	DESTROY_IF(this->current);
+	if (!this->inner->enumerate(this->inner, &name, &me, &other,
+								&local_net, &remote_net))
+	{
+		this->current = NULL;
+		return FALSE;
+	}
+	this->current = peer_cfg_create(
+				name, 2, this->ike->get_ref(this->ike),
+				CERT_NEVER_SEND, UNIQUE_REPLACE,
+				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 */
+				FALSE, NULL, NULL); 			/* mediation, med by, peer id */
+
+	auth = auth_cfg_create();
+	auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
+	auth->add(auth, AUTH_RULE_IDENTITY,
+			  identification_create_from_encoding(ID_KEY_ID, me));
+	this->current->add_auth_cfg(this->current, auth, TRUE);
+	auth = auth_cfg_create();
+	auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
+	auth->add(auth, AUTH_RULE_IDENTITY,
+			  identification_create_from_encoding(ID_KEY_ID, other));
+	this->current->add_auth_cfg(this->current, auth, FALSE);
+
+	child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE, MODE_TUNNEL,
+								 ACTION_NONE, ACTION_NONE, FALSE, 0);
+	child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
+	child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
+	child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
+	this->current->add_child_cfg(this->current, child_cfg);
+	*cfg = this->current;
+	return TRUE;
+}
+
+/**
+ * Implementation of peer_enumerator_t.public.destroy
+ */
+static void peer_enumerator_destroy(peer_enumerator_t *this)
+{
+	DESTROY_IF(this->current);
+	this->inner->destroy(this->inner);
+	free(this);
+}
+
+/**
+ * Implementation of backend_t.create_peer_cfg_enumerator.
+ */
+static enumerator_t* create_peer_cfg_enumerator(private_medcli_config_t *this,
+												identification_t *me,
+												identification_t *other)
+{
+	peer_enumerator_t *e = malloc_thing(peer_enumerator_t);
+
+	e->current = NULL;
+	e->ike = this->ike;
+	e->rekey = this->rekey;
+	e->dpd = this->dpd;
+	e->public.enumerate = (void*)peer_enumerator_enumerate;
+	e->public.destroy = (void*)peer_enumerator_destroy;
+
+	/* filter on IDs: NULL or ANY or matching KEY_ID */
+	e->inner = this->db->query(this->db,
+			"SELECT Alias, ClientConfig.KeyId, Connection.KeyId, "
+			"Connection.LocalSubnet, Connection.RemoteSubnet "
+			"FROM ClientConfig JOIN Connection "
+			"WHERE Active AND "
+			"(? OR ClientConfig.KeyId = ?) AND (? OR Connection.KeyId = ?)",
+			DB_INT, me == NULL || me->get_type(me) == ID_ANY,
+			DB_BLOB, me && me->get_type(me) == ID_KEY_ID ?
+				me->get_encoding(me) : chunk_empty,
+			DB_INT, other == NULL || other->get_type(other) == ID_ANY,
+			DB_BLOB, other && other->get_type(other) == ID_KEY_ID ?
+				other->get_encoding(other) : chunk_empty,
+			DB_TEXT, DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
+	if (!e->inner)
+	{
+		free(e);
+		return NULL;
+	}
+	return &e->public;
+}
+
+/**
+ * initiate a peer config
+ */
+static job_requeue_t initiate_config(peer_cfg_t *peer_cfg)
+{
+	enumerator_t *enumerator;
+	child_cfg_t *child_cfg = NULL;;
+
+	enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg);
+	enumerator->enumerate(enumerator, &child_cfg);
+	if (child_cfg)
+	{
+		child_cfg->get_ref(child_cfg);
+		peer_cfg->get_ref(peer_cfg);
+		enumerator->destroy(enumerator);
+		charon->controller->initiate(charon->controller,
+									 peer_cfg, child_cfg, NULL, NULL);
+	}
+	else
+	{
+		enumerator->destroy(enumerator);
+	}
+	return JOB_REQUEUE_NONE;
+}
+
+/**
+ * schedule initation of all "active" connections
+ */
+static void schedule_autoinit(private_medcli_config_t *this)
+{
+	enumerator_t *e;
+	char *name;
+
+	e = this->db->query(this->db, "SELECT Alias FROM Connection WHERE Active",
+						DB_TEXT);
+	if (e)
+	{
+		while (e->enumerate(e, &name))
+		{
+			peer_cfg_t *peer_cfg;
+
+			peer_cfg = get_peer_cfg_by_name(this, name);
+			if (peer_cfg)
+			{
+				/* schedule asynchronous initiation job */
+				charon->processor->queue_job(charon->processor,
+						(job_t*)callback_job_create(
+									(callback_job_cb_t)initiate_config,
+									peer_cfg, (void*)peer_cfg->destroy, NULL));
+			}
+		}
+		e->destroy(e);
+	}
+}
+
+/**
+ * Implementation of medcli_config_t.destroy.
+ */
+static void destroy(private_medcli_config_t *this)
+{
+	this->ike->destroy(this->ike);
+	free(this);
+}
+
+/**
+ * Described in header.
+ */
+medcli_config_t *medcli_config_create(database_t *db)
+{
+	private_medcli_config_t *this = malloc_thing(private_medcli_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(*)(medcli_config_t*))destroy;
+
+	this->db = db;
+	this->rekey = lib->settings->get_time(lib->settings, "medcli.rekey", 1200);
+	this->dpd = lib->settings->get_time(lib->settings, "medcli.dpd", 300);
+	this->ike = ike_cfg_create(FALSE, FALSE,
+						"0.0.0.0", IKEV2_UDP_PORT, "0.0.0.0", IKEV2_UDP_PORT);
+	this->ike->add_proposal(this->ike, proposal_create_default(PROTO_IKE));
+
+	schedule_autoinit(this);
+
+	return &this->public;
+}
+