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/*
* Copyright (C) 2012 Reto Buerki
* Copyright (C) 2012 Adrian-Ken Rueegsegger
* HSR 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 <credentials/sets/mem_cred.h>
#include <collections/hashtable.h>
#include <threading/rwlock.h>
#include <utils/debug.h>
#include "tkm_private_key.h"
#include "tkm_cred.h"
typedef struct private_tkm_cred_t private_tkm_cred_t;
/**
* Private data of a tkm_cred_t object.
*/
struct private_tkm_cred_t {
/**
* Public tkm_cred_t interface.
*/
tkm_cred_t public;
/**
* In-memory credential set.
*/
mem_cred_t *creds;
/**
* Key-id hashtable.
*/
hashtable_t *known_keys;
/**
* rwlock for hashtable.
*/
rwlock_t *lock;
};
METHOD(credential_set_t, create_private_enumerator, enumerator_t*,
private_tkm_cred_t *this, key_type_t type, identification_t *id)
{
identification_t *entry;
if (!id)
{
return this->known_keys->create_enumerator(this->known_keys);
}
this->lock->write_lock(this->lock);
entry = this->known_keys->get(this->known_keys, id);
if (!entry)
{
identification_t *clone = id->clone(id);
tkm_private_key_t *key = tkm_private_key_init(id);
DBG1(DBG_CFG, "adding private key proxy for id '%Y'", clone);
if (!key)
{
DBG1(DBG_CFG, "unable to create private key for id '%Y'", clone);
this->lock->unlock(this->lock);
return NULL;
}
this->creds->add_key(this->creds, (private_key_t *)key);
entry = this->known_keys->put(this->known_keys, clone, clone);
}
this->lock->unlock(this->lock);
return this->creds->set.create_private_enumerator(&this->creds->set,
type, id);
}
METHOD(tkm_cred_t, destroy, void,
private_tkm_cred_t *this)
{
enumerator_t *enumerator;
identification_t *entry;
enumerator = this->known_keys->create_enumerator(this->known_keys);
while (enumerator->enumerate(enumerator, NULL, &entry))
{
entry->destroy(entry);
}
enumerator->destroy(enumerator);
this->known_keys->destroy(this->known_keys);
this->creds->destroy(this->creds);
this->lock->destroy(this->lock);
free(this);
}
/**
* Hashtable hash function.
*/
static u_int hash(identification_t *id)
{
return chunk_hash(id->get_encoding(id));
}
/**
* Hashtable equals function.
*/
static bool equals(identification_t *a, identification_t *b)
{
return a->equals(a, b);
}
/**
* See header
*/
tkm_cred_t *tkm_cred_create()
{
private_tkm_cred_t *this;
INIT(this,
.public = {
.set = {
.create_shared_enumerator = (void*)return_null,
.create_private_enumerator = _create_private_enumerator,
.create_cert_enumerator = (void*)return_null,
.create_cdp_enumerator = (void*)return_null,
.cache_cert = (void*)nop,
},
.destroy = _destroy,
},
.creds = mem_cred_create(),
.lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
.known_keys = hashtable_create((hashtable_hash_t)hash,
(hashtable_equals_t)equals, 4),
);
return &this->public;
}
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