1 files changed, 365 insertions, 0 deletions
diff --git a/src/pluto/whack_attribute.c b/src/pluto/whack_attribute.c
new file mode 100644
index 000000000..6a12f0c09
--- /dev/null
+++ b/src/pluto/whack_attribute.c
@@ -0,0 +1,365 @@
+/*
+ * Copyright (C) 2010 Tobias Brunner
+ * 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.
+ */
+
+#include "whack_attribute.h"
+
+#include "log.h"
+
+/* these are defined as constants in constant.h but redefined as enum values in
+ * attributes/attributes.h */
+#undef INTERNAL_IP4_SERVER
+#undef INTERNAL_IP6_SERVER
+
+#include <hydra.h>
+#include <attributes/mem_pool.h>
+#include <utils/linked_list.h>
+#include <threading/rwlock.h>
+
+typedef struct private_whack_attribute_t private_whack_attribute_t;
+
+/**
+ * private data of whack_attribute
+ */
+struct private_whack_attribute_t {
+
+	/**
+	 * public functions
+	 */
+	whack_attribute_t public;
+
+	/**
+	 * list of pools, contains mem_pool_t
+	 */
+	linked_list_t *pools;
+
+	/**
+	 * rwlock to lock access to pools
+	 */
+	rwlock_t *lock;
+};
+
+/**
+ * global object
+ */
+whack_attribute_t *whack_attr;
+
+/**
+ * compare pools by name
+ */
+static bool pool_match(mem_pool_t *current, char *name)
+{
+	return name && streq(name, current->get_name(current));
+}
+
+/**
+ * find a pool by name
+ */
+static mem_pool_t *find_pool(private_whack_attribute_t *this, char *name)
+{
+	mem_pool_t *found;
+	if (this->pools->find_first(this->pools, (linked_list_match_t)pool_match,
+		(void**)&found, name) == SUCCESS)
+	{
+		return found;
+	}
+	return NULL;
+}
+
+METHOD(attribute_provider_t, acquire_address, host_t*,
+	   private_whack_attribute_t *this, char *name, identification_t *id,
+	   host_t *requested)
+{
+	mem_pool_t *pool;
+	host_t *addr = NULL;
+	this->lock->read_lock(this->lock);
+	pool = find_pool(this, name);
+	if (pool)
+	{
+		addr = pool->acquire_address(pool, id, requested);
+	}
+	this->lock->unlock(this->lock);
+	return addr;
+}
+
+METHOD(attribute_provider_t, release_address, bool,
+	   private_whack_attribute_t *this, char *name, host_t *address,
+	   identification_t *id)
+{
+	mem_pool_t *pool;
+	bool found = FALSE;
+	this->lock->read_lock(this->lock);
+	pool = find_pool(this, name);
+	if (pool)
+	{
+		found = pool->release_address(pool, address, id);
+	}
+	this->lock->unlock(this->lock);
+	return found;
+}
+
+METHOD(whack_attribute_t, add_pool, bool,
+	   private_whack_attribute_t *this, const char *name,
+	   const whack_end_t *right)
+{
+	mem_pool_t *pool;
+	host_t *base = NULL;
+	u_int32_t bits = 0;
+
+	/* named pool */
+	if (right->sourceip_mask <= 0)
+	{
+		return FALSE;
+	}
+
+	/* if %config, add an empty pool, otherwise */
+	if (right->sourceip)
+	{
+		DBG(DBG_CONTROL,
+			DBG_log("adding virtual IP address pool '%s': %s/%d",
+					name, right->sourceip, right->sourceip_mask);
+		);
+		base = host_create_from_string(right->sourceip, 0);
+		if (!base)
+		{
+			loglog(RC_LOG_SERIOUS, "virtual IP address invalid, discarded");
+			return FALSE;
+		}
+		bits = right->sourceip_mask;
+	}
+	pool = mem_pool_create((char*)name, base, bits);
+	DESTROY_IF(base);
+
+	this->lock->write_lock(this->lock);
+	this->pools->insert_last(this->pools, pool);
+	this->lock->unlock(this->lock);
+	return TRUE;
+}
+
+METHOD(whack_attribute_t, del_pool, void,
+	   private_whack_attribute_t *this, char *name)
+{
+	enumerator_t *enumerator;
+	mem_pool_t *pool;
+
+	this->lock->write_lock(this->lock);
+	enumerator = this->pools->create_enumerator(this->pools);
+	while (enumerator->enumerate(enumerator, &pool))
+	{
+		if (streq(name, pool->get_name(pool)))
+		{
+			DBG(DBG_CONTROL,
+				DBG_log("deleting virtual IP address pool '%s'", name)
+			);
+			this->pools->remove_at(this->pools, enumerator);
+			pool->destroy(pool);
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+	this->lock->unlock(this->lock);
+}
+
+/**
+ * Pool enumerator filter function, converts pool_t to name, size, ...
+ */
+static bool pool_filter(void *lock, mem_pool_t **poolp, const char **name,
+						void *d1, u_int *size, void *d2, u_int *online,
+						void *d3, u_int *offline)
+{
+	mem_pool_t *pool = *poolp;
+	*name = pool->get_name(pool);
+	*size = pool->get_size(pool);
+	*online = pool->get_online(pool);
+	*offline = pool->get_offline(pool);
+	return TRUE;
+}
+
+METHOD(whack_attribute_t, create_pool_enumerator, enumerator_t*,
+	   private_whack_attribute_t *this)
+{
+	this->lock->read_lock(this->lock);
+	return enumerator_create_filter(this->pools->create_enumerator(this->pools),
+									(void*)pool_filter,
+									this->lock, (void*)this->lock->unlock);
+}
+
+METHOD(whack_attribute_t, create_lease_enumerator, enumerator_t*,
+	   private_whack_attribute_t *this, char *name)
+{
+	mem_pool_t *pool;
+	this->lock->read_lock(this->lock);
+	pool = find_pool(this, name);
+	if (!pool)
+	{
+		this->lock->unlock(this->lock);
+		return NULL;
+	}
+	return enumerator_create_cleaner(pool->create_lease_enumerator(pool),
+									 (void*)this->lock->unlock, this->lock);
+}
+
+/**
+ * see header file
+ */
+void whack_attribute_finalize()
+{
+	private_whack_attribute_t *this;
+
+	if (whack_attr)
+	{
+ 		this = (private_whack_attribute_t*)whack_attr;
+		hydra->attributes->remove_provider(hydra->attributes,
+									   &this->public.provider);
+		this->lock->destroy(this->lock);
+		this->pools->destroy_offset(this->pools, offsetof(mem_pool_t, destroy));
+		free(this);
+	}
+}
+
+/**
+ * see header file
+ */
+void whack_attribute_initialize()
+{
+	private_whack_attribute_t *this;
+
+	INIT(this,
+		.public = {
+			.provider = {
+				.acquire_address = _acquire_address,
+				.release_address = _release_address,
+				.create_attribute_enumerator = enumerator_create_empty,
+			},
+			.add_pool = _add_pool,
+			.del_pool = _del_pool,
+			.create_pool_enumerator = _create_pool_enumerator,
+			.create_lease_enumerator = _create_lease_enumerator,
+		},
+		.pools = linked_list_create(),
+		.lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
+	);
+
+	hydra->attributes->add_provider(hydra->attributes, &this->public.provider);
+
+	whack_attr = &this->public;
+}
+
+/**
+ * list leases of a single pool
+ */
+static void pool_leases(char *pool, host_t *address,
+						identification_t *identification,
+						u_int size, u_int online, u_int offline)
+{
+
+	enumerator_t *enumerator;
+	identification_t *id;
+	host_t *lease;
+	bool on, found = FALSE;
+
+	whack_log(RC_COMMENT, "Leases in pool '%s', usage: %lu/%lu, %lu online",
+			  pool, online + offline, size, online);
+	enumerator = whack_attr->create_lease_enumerator(whack_attr, pool);
+	while (enumerator && enumerator->enumerate(enumerator, &id, &lease, &on))
+	{
+		if ((!address && !identification) ||
+			(address && address->ip_equals(address, lease)) ||
+			(identification && identification->equals(identification, id)))
+		{
+			whack_log(RC_COMMENT, "  %15H   %s   '%Y'",
+					  lease, on ? "online" : "offline", id);
+			found = TRUE;
+		}
+	}
+	enumerator->destroy(enumerator);
+	if (!found)
+	{
+		whack_log(RC_COMMENT, "  no matching leases found");
+	}
+}
+
+/**
+ * see header file
+ */
+void list_leases(char *name, char *addr, char *id)
+{
+	identification_t *identification = NULL;
+	host_t *address = NULL;
+	bool found = FALSE;
+	enumerator_t *enumerator;
+	u_int size, online, offline;
+	char *pool;
+
+	if (addr)
+	{
+		address = host_create_from_string(addr, 0);
+	}
+	if (id)
+	{
+		identification = identification_create_from_string(id);
+	}
+
+	enumerator = whack_attr->create_pool_enumerator(whack_attr);
+	while (enumerator->enumerate(enumerator, &pool, &size, &online, &offline))
+	{
+		if (!name || streq(name, pool))
+		{
+			pool_leases(pool, address, identification, size, online, offline);
+			found = TRUE;
+		}
+	}
+	enumerator->destroy(enumerator);
+	if (!found)
+	{
+		if (name)
+		{
+			whack_log(RC_COMMENT, "pool '%s' not found", name);
+		}
+		else
+		{
+			whack_log(RC_COMMENT, "no pools found");
+		}
+	}
+	DESTROY_IF(identification);
+	DESTROY_IF(address);
+}
+
+/**
+ * see header file
+ */
+void show_pools(const char *name)
+{
+	enumerator_t *enumerator;
+	u_int size, online, offline;
+	char *pool;
+	bool first = TRUE;
+
+	enumerator = whack_attr->create_pool_enumerator(whack_attr);
+	while (enumerator->enumerate(enumerator, &pool, &size, &online, &offline))
+	{
+		if (name && !streq(name, pool))
+		{
+			continue;
+		}
+		if (first)
+		{
+			first = FALSE;
+			whack_log(RC_COMMENT, "Virtual IP pools (size/online/offline):");
+		}
+		whack_log(RC_COMMENT, "\"%s\": %u/%u/%u", pool, size, online, offline);
+	}
+	enumerator->destroy(enumerator);
+}