Adding a whack_attribute class which manages in-memory pools in pluto and is very similar to stroke_attribute.
This commit is contained in:
Tobias Brunner
@@ -46,6 +46,7 @@ state.c state.h \
|
||||
timer.c timer.h \
|
||||
vendor.c vendor.h \
|
||||
virtual.c virtual.h \
|
||||
whack_attribute.c whack_attribute.h \
|
||||
xauth.c xauth.h \
|
||||
x509.c x509.h \
|
||||
builder.c builder.h \
|
||||
|
||||
@@ -0,0 +1,251 @@
|
||||
/*
|
||||
* 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)))
|
||||
{
|
||||
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 = (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;
|
||||
}
|
||||
|
||||
@@ -0,0 +1,95 @@
|
||||
/*
|
||||
* Copyright (C) 2010 Tobias Brunner
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @defgroup whack_attribute
|
||||
* @{ @ingroup pluto
|
||||
*/
|
||||
|
||||
#ifndef WHACK_ATTRIBUTE_H_
|
||||
#define WHACK_ATTRIBUTE_H_
|
||||
|
||||
#include <whack.h>
|
||||
#include <attributes/attribute_provider.h>
|
||||
|
||||
typedef struct whack_attribute_t whack_attribute_t;
|
||||
|
||||
/**
|
||||
* Whack attribute provider (basically an in-memory IP address pool)
|
||||
*/
|
||||
struct whack_attribute_t {
|
||||
|
||||
/**
|
||||
* Implements attribute provider interface
|
||||
*/
|
||||
attribute_provider_t provider;
|
||||
|
||||
/**
|
||||
* Add a virtual IP address pool.
|
||||
*
|
||||
* @param name name of the pool
|
||||
* @param right "right" end of whack message
|
||||
* @return TRUE, if the pool was successfully added
|
||||
*/
|
||||
bool (*add_pool)(whack_attribute_t *this, const char *name,
|
||||
const whack_end_t *right);
|
||||
|
||||
/**
|
||||
* Remove a virtual IP address pool.
|
||||
*
|
||||
* @param name name of the pool
|
||||
*/
|
||||
void (*del_pool)(whack_attribute_t *this, char *name);
|
||||
|
||||
/**
|
||||
* Create an enumerator over installed pools.
|
||||
*
|
||||
* Enumerator enumerates over
|
||||
* char *pool, u_int size, u_int offline, u_int online.
|
||||
*
|
||||
* @return enumerator
|
||||
*/
|
||||
enumerator_t* (*create_pool_enumerator)(whack_attribute_t *this);
|
||||
|
||||
/**
|
||||
* Create an enumerator over the leases of a pool.
|
||||
*
|
||||
* Enumerator enumerates over
|
||||
* identification_t *id, host_t *address, bool online
|
||||
*
|
||||
* @param name name of the pool to enumerate
|
||||
* @return enumerator, NULL if pool not found
|
||||
*/
|
||||
enumerator_t* (*create_lease_enumerator)(whack_attribute_t *this,
|
||||
char *name);
|
||||
};
|
||||
|
||||
/**
|
||||
* Global object to manage pools. Set between calls to
|
||||
* whack_attribute_initialize() and whack_attribute_finalize().
|
||||
*/
|
||||
extern whack_attribute_t *whack_attr;
|
||||
|
||||
/**
|
||||
* Initialize the whack attribute provider
|
||||
*/
|
||||
void whack_attribute_initialize();
|
||||
|
||||
/**
|
||||
* Finalize the whack attribute provider
|
||||
*/
|
||||
void whack_attribute_finalize();
|
||||
|
||||
#endif /** WHACK_ATTRIBUTE_H_ @}*/
|
||||
Reference in New Issue
Block a user