1 files changed, 479 insertions, 0 deletions
diff --git a/src/charon/config/peer_cfg.c b/src/charon/config/peer_cfg.c
new file mode 100644
index 000000000..1d9176e0d
--- /dev/null
+++ b/src/charon/config/peer_cfg.c
@@ -0,0 +1,479 @@
+/**
+ * @file peer_cfg.c
+ * 
+ * @brief Implementation of peer_cfg_t.
+ * 
+ */
+
+/*
+ * Copyright (C) 2005-2007 Martin Willi
+ * Copyright (C) 2005 Jan Hutter
+ * 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.
+ */
+
+#include <string.h>
+#include <pthread.h>
+
+#include "peer_cfg.h"
+
+#include <utils/linked_list.h>
+#include <utils/identification.h>
+
+ENUM(cert_policy_names, CERT_ALWAYS_SEND, CERT_NEVER_SEND,
+	"CERT_ALWAYS_SEND",
+	"CERT_SEND_IF_ASKED",
+	"CERT_NEVER_SEND"
+);
+
+ENUM(dpd_action_names, DPD_NONE, DPD_RESTART,
+	"DPD_NONE",
+	"DPD_CLEAR",
+	"DPD_ROUTE",
+	"DPD_RESTART"
+);
+
+typedef struct private_peer_cfg_t private_peer_cfg_t;
+
+/**
+ * Private data of an peer_cfg_t object
+ */
+struct private_peer_cfg_t {
+
+	/**
+	 * Public part
+	 */
+	peer_cfg_t public;
+	
+	/**
+	 * Number of references hold by others to this peer_cfg
+	 */
+	refcount_t refcount;
+	
+	/**
+	 * Name of the peer_cfg, used to query it
+	 */
+	char *name;
+	
+	/**
+	 * IKE version to use for initiation
+	 */
+	u_int ike_version;
+	
+	/**
+	 * IKE config associated to this peer config
+	 */
+	ike_cfg_t *ike_cfg;
+	
+	/**
+	 * list of child configs associated to this peer config
+	 */
+	linked_list_t *child_cfgs;
+	
+	/**
+	 * mutex to lock access to list of child_cfgs
+	 */
+	pthread_mutex_t mutex;
+	
+	/**
+	 * id to use to identify us
+	 */
+	identification_t *my_id;
+	
+	/**
+	 * allowed id for other
+	 */
+	identification_t *other_id;
+	
+	/**
+	 * we have a cert issued by this CA
+	 */
+	identification_t *my_ca;
+	
+	/**
+	 * we require the other end to have a cert issued by this CA
+	 */
+	identification_t *other_ca;
+	
+	/**
+	 * should we send a certificate
+	 */
+	cert_policy_t cert_policy;
+	
+	/**
+	 * Method to use for own authentication data
+	 */
+	auth_method_t auth_method;
+	
+	/**
+	 * EAP type to use for peer authentication
+	 */
+	eap_type_t eap_type;
+	
+	/**
+	 * number of tries after giving up if peer does not respond
+	 */
+	u_int32_t keyingtries;
+	
+	/**
+	 * user reauthentication instead of rekeying
+	 */
+	bool use_reauth;
+	
+	/**
+	 * Time before an SA gets invalid
+	 */
+	u_int32_t lifetime;
+	
+	/**
+	 * Time before an SA gets rekeyed
+	 */
+	u_int32_t rekeytime;
+	
+	/**
+	 * Time, which specifies the range of a random value
+	 * substracted from lifetime.
+	 */
+	u_int32_t jitter;
+	
+	/**
+	 * What to do with an SA when other peer seams to be dead?
+	 */
+	bool dpd_delay;
+	
+	/**
+	 * What to do with CHILDren when other peer seams to be dead?
+	 */
+	bool dpd_action;
+	
+	/**
+	 * virtual IP to use locally
+	 */
+	host_t *my_virtual_ip;
+	
+	/**
+	 * virtual IP to use remotly
+	 */
+	host_t *other_virtual_ip;
+};
+
+/**
+ * Implementation of peer_cfg_t.get_name
+ */
+static char *get_name(private_peer_cfg_t *this)
+{
+	return this->name;
+}
+
+/**
+ * Implementation of peer_cfg_t.get_ike_version
+ */
+static u_int get_ike_version(private_peer_cfg_t *this)
+{
+	return this->ike_version;
+}
+
+/**
+ * Implementation of peer_cfg_t.get_ike_cfg
+ */
+static ike_cfg_t* get_ike_cfg(private_peer_cfg_t *this)
+{
+	return this->ike_cfg;
+}
+
+/**
+ * Implementation of peer_cfg_t.add_child_cfg.
+ */
+static void add_child_cfg(private_peer_cfg_t *this, child_cfg_t *child_cfg)
+{
+	pthread_mutex_lock(&this->mutex);
+	this->child_cfgs->insert_last(this->child_cfgs, child_cfg);
+	pthread_mutex_unlock(&this->mutex);
+}
+
+/**
+ * Implementation of peer_cfg_t.create_child_cfg_iterator.
+ */
+static iterator_t* create_child_cfg_iterator(private_peer_cfg_t *this)
+{
+	return this->child_cfgs->create_iterator_locked(this->child_cfgs,
+													&this->mutex);
+}
+
+/**
+ * Check if child_cfg contains traffic selectors
+ */
+static bool contains_ts(child_cfg_t *child, bool mine, linked_list_t *ts,
+						host_t *host)
+{
+	linked_list_t *selected;
+	bool contains = FALSE;
+	
+	selected = child->get_traffic_selectors(child, mine, ts, host);
+	contains = selected->get_count(selected);
+	selected->destroy_offset(selected, offsetof(traffic_selector_t, destroy));
+	return contains;
+}
+
+/**
+ * Implementation of peer_cfg_t.select_child_cfg
+ */
+static child_cfg_t* select_child_cfg(private_peer_cfg_t *this,
+									 linked_list_t *my_ts,
+									 linked_list_t *other_ts,
+									 host_t *my_host, host_t *other_host)
+{
+	child_cfg_t *current, *found = NULL;
+	iterator_t *iterator;
+	
+	iterator = create_child_cfg_iterator(this);
+	while (iterator->iterate(iterator, (void**)&current))
+	{
+		if (contains_ts(current, TRUE, my_ts, my_host) &&
+			contains_ts(current, FALSE, other_ts, other_host))
+		{
+			found = current;
+			found->get_ref(found);
+			break;
+		}
+	}
+	iterator->destroy(iterator);
+	return found;
+}
+
+/**
+ * Implementation of peer_cfg_t.get_my_id
+ */
+static identification_t *get_my_id(private_peer_cfg_t *this)
+{
+	return this->my_id;
+}
+
+/**
+ * Implementation of peer_cfg_t.get_other_id
+ */
+static identification_t *get_other_id(private_peer_cfg_t *this)
+{
+	return this->other_id;
+}
+
+/**
+ * Implementation of peer_cfg_t.get_my_ca
+ */
+static identification_t *get_my_ca(private_peer_cfg_t *this)
+{
+	return this->my_ca;
+}
+
+static identification_t *get_other_ca(private_peer_cfg_t *this)
+{
+	return this->other_ca;
+}	
+
+/**
+ * Implementation of peer_cfg_t.get_cert_policy.
+ */
+static cert_policy_t get_cert_policy(private_peer_cfg_t *this)
+{
+	return this->cert_policy;
+}
+
+/**
+ * Implementation of connection_t.auth_method_t.
+ */
+static auth_method_t get_auth_method(private_peer_cfg_t *this)
+{
+	return this->auth_method;
+}
+
+/**
+ * Implementation of connection_t.get_eap_type.
+ */
+static eap_type_t get_eap_type(private_peer_cfg_t *this)
+{
+	return this->eap_type;
+}
+
+/**
+ * Implementation of connection_t.get_keyingtries.
+ */
+static u_int32_t get_keyingtries(private_peer_cfg_t *this)
+{
+	return this->keyingtries;
+}
+
+/**
+ * Implementation of peer_cfg_t.get_soft_lifetime
+ */
+static u_int32_t get_lifetime(private_peer_cfg_t *this, bool rekey)
+{
+	if (rekey)
+	{
+		if (this->jitter == 0)
+		{
+			return this->rekeytime;
+		}
+		return this->rekeytime - (random() % this->jitter);
+	}
+	return this->lifetime;
+}
+	
+/**
+ * Implementation of peer_cfg_t.use_reauth.
+ */
+static bool use_reauth(private_peer_cfg_t *this, bool rekey)
+{
+	return this->use_reauth;
+}
+
+/**
+ * Implements peer_cfg_t.get_dpd_delay
+ */
+static u_int32_t get_dpd_delay(private_peer_cfg_t *this)
+{
+	return this->dpd_delay;
+}
+
+/**
+ * Implements peer_cfg_t.get_dpd_action
+ */
+static dpd_action_t get_dpd_action(private_peer_cfg_t *this)
+{
+	return this->dpd_action;
+}
+
+/**
+ * Implementation of peer_cfg_t.get_my_virtual_ip.
+ */
+static host_t* get_my_virtual_ip(private_peer_cfg_t *this)
+{
+	if (this->my_virtual_ip == NULL)
+	{
+		return NULL;
+	}
+	return this->my_virtual_ip->clone(this->my_virtual_ip);
+}
+
+/**
+ * Implementation of peer_cfg_t.get_other_virtual_ip.
+ */
+static host_t* get_other_virtual_ip(private_peer_cfg_t *this, host_t *suggestion)
+{
+	if (this->other_virtual_ip == NULL)
+	{	/* disallow */
+		return NULL;
+	}
+	if (!this->other_virtual_ip->is_anyaddr(this->other_virtual_ip))
+	{	/* force own configuration */
+		return this->other_virtual_ip->clone(this->other_virtual_ip);
+	}
+	if (suggestion == NULL || suggestion->is_anyaddr(suggestion))
+	{
+		return NULL;
+	}
+	return suggestion->clone(suggestion);
+}
+
+/**
+ * Implements peer_cfg_t.get_ref.
+ */
+static void get_ref(private_peer_cfg_t *this)
+{
+	ref_get(&this->refcount);
+}
+
+/**
+ * Implements peer_cfg_t.destroy.
+ */
+static void destroy(private_peer_cfg_t *this)
+{
+	if (ref_put(&this->refcount))
+	{
+		this->ike_cfg->destroy(this->ike_cfg);
+		this->child_cfgs->destroy_offset(this->child_cfgs, offsetof(child_cfg_t, destroy));
+		this->my_id->destroy(this->my_id);
+		this->other_id->destroy(this->other_id);
+		DESTROY_IF(this->my_ca);
+		DESTROY_IF(this->other_ca);
+		
+		DESTROY_IF(this->my_virtual_ip);
+		DESTROY_IF(this->other_virtual_ip);
+		free(this->name);
+		free(this);
+	}
+}
+
+/*
+ * Described in header-file
+ */
+peer_cfg_t *peer_cfg_create(char *name, u_int ike_version, ike_cfg_t *ike_cfg,
+							identification_t *my_id, identification_t *other_id,
+							identification_t *my_ca, identification_t *other_ca,
+							cert_policy_t cert_policy, auth_method_t auth_method,
+							eap_type_t eap_type, u_int32_t keyingtries,
+							u_int32_t lifetime, u_int32_t rekeytime,
+							u_int32_t jitter, bool reauth,
+							u_int32_t dpd_delay, dpd_action_t dpd_action,
+							host_t *my_virtual_ip, host_t *other_virtual_ip)
+{
+	private_peer_cfg_t *this = malloc_thing(private_peer_cfg_t);
+
+	/* public functions */
+	this->public.get_name = (char* (*) (peer_cfg_t *))get_name;	
+	this->public.get_ike_version = (u_int(*) (peer_cfg_t *))get_ike_version;	
+	this->public.get_ike_cfg = (ike_cfg_t* (*) (peer_cfg_t *))get_ike_cfg;
+	this->public.add_child_cfg = (void (*) (peer_cfg_t *, child_cfg_t*))add_child_cfg;
+	this->public.create_child_cfg_iterator = (iterator_t* (*) (peer_cfg_t *))create_child_cfg_iterator;
+	this->public.select_child_cfg = (child_cfg_t* (*) (peer_cfg_t *,linked_list_t*,linked_list_t*,host_t*,host_t*))select_child_cfg;
+	this->public.get_my_id = (identification_t* (*)(peer_cfg_t*))get_my_id;
+	this->public.get_other_id = (identification_t* (*)(peer_cfg_t *))get_other_id;
+	this->public.get_my_ca = (identification_t* (*)(peer_cfg_t *))get_my_ca;
+	this->public.get_other_ca = (identification_t* (*)(peer_cfg_t *))get_other_ca;
+	this->public.get_cert_policy = (cert_policy_t (*) (peer_cfg_t *))get_cert_policy;
+	this->public.get_auth_method = (auth_method_t (*) (peer_cfg_t *))get_auth_method;
+	this->public.get_eap_type = (eap_type_t (*) (peer_cfg_t *))get_eap_type;
+	this->public.get_keyingtries = (u_int32_t (*) (peer_cfg_t *))get_keyingtries;
+	this->public.get_lifetime = (u_int32_t (*) (peer_cfg_t *, bool rekey))get_lifetime;
+	this->public.use_reauth = (bool (*) (peer_cfg_t *))use_reauth;
+	this->public.get_dpd_delay = (u_int32_t (*) (peer_cfg_t *))get_dpd_delay;
+	this->public.get_dpd_action = (dpd_action_t (*) (peer_cfg_t *))get_dpd_action;
+	this->public.get_my_virtual_ip = (host_t* (*) (peer_cfg_t *))get_my_virtual_ip;
+	this->public.get_other_virtual_ip = (host_t* (*) (peer_cfg_t *, host_t *))get_other_virtual_ip;
+	this->public.get_ref = (void(*)(peer_cfg_t *))get_ref;
+	this->public.destroy = (void(*)(peer_cfg_t *))destroy;
+	
+	/* apply init values */
+	this->name = strdup(name);
+	this->ike_version = ike_version;
+	this->ike_cfg = ike_cfg;
+	this->child_cfgs = linked_list_create();
+	pthread_mutex_init(&this->mutex, NULL);
+	this->my_id = my_id;
+	this->other_id = other_id;
+	this->my_ca = my_ca;
+	this->other_ca = other_ca;
+	this->cert_policy = cert_policy;
+	this->auth_method = auth_method;
+	this->eap_type = eap_type;
+	this->keyingtries = keyingtries;
+	this->lifetime = lifetime;
+	this->rekeytime = rekeytime;
+	this->jitter = jitter;
+	this->use_reauth = reauth;
+	this->dpd_delay = dpd_delay;
+	this->dpd_action = dpd_action;
+	this->my_virtual_ip = my_virtual_ip;
+	this->other_virtual_ip = other_virtual_ip;
+	this->refcount = 1;
+
+	return &this->public;
+}