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/*
* Copyright (C) 2012 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.
*/
#include "android_creds.h"
#include "../charonservice.h"
#include <daemon.h>
#include <library.h>
#include <credentials/sets/mem_cred.h>
#include <threading/rwlock.h>
typedef struct private_android_creds_t private_android_creds_t;
/**
* Private data of an android_creds_t object
*/
struct private_android_creds_t {
/**
* Public interface
*/
android_creds_t public;
/**
* Credential set storing trusted certificates and user credentials
*/
mem_cred_t *creds;
/**
* read/write lock to make sure certificates are only loaded once
*/
rwlock_t *lock;
/**
* TRUE if certificates have been loaded via JNI
*/
bool loaded;
};
/**
* Load trusted certificates via charonservice (JNI).
*/
static void load_trusted_certificates(private_android_creds_t *this)
{
linked_list_t *certs;
certificate_t *cert;
chunk_t *current;
certs = charonservice->get_trusted_certificates(charonservice);
if (certs)
{
while (certs->remove_first(certs, (void**)¤t) == SUCCESS)
{
cert = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509,
BUILD_BLOB_ASN1_DER, *current, BUILD_END);
if (cert)
{
DBG2(DBG_CFG, "loaded CA certificate '%Y'",
cert->get_subject(cert));
this->creds->add_cert(this->creds, TRUE, cert);
}
chunk_free(current);
free(current);
}
certs->destroy(certs);
}
}
METHOD(credential_set_t, create_cert_enumerator, enumerator_t*,
private_android_creds_t *this, certificate_type_t cert, key_type_t key,
identification_t *id, bool trusted)
{
enumerator_t *enumerator;
if (!trusted || (cert != CERT_ANY && cert != CERT_X509))
{
return NULL;
}
this->lock->read_lock(this->lock);
if (!this->loaded)
{
this->lock->unlock(this->lock);
this->lock->write_lock(this->lock);
/* check again after acquiring the write lock */
if (!this->loaded)
{
load_trusted_certificates(this);
this->loaded = TRUE;
}
this->lock->unlock(this->lock);
this->lock->read_lock(this->lock);
}
enumerator = this->creds->set.create_cert_enumerator(&this->creds->set,
cert, key, id, trusted);
return enumerator_create_cleaner(enumerator, (void*)this->lock->unlock,
this->lock);
}
METHOD(android_creds_t, add_username_password, void,
private_android_creds_t *this, char *username, char *password)
{
shared_key_t *shared_key;
identification_t *id;
chunk_t secret;
secret = chunk_create(password, strlen(password));
shared_key = shared_key_create(SHARED_EAP, chunk_clone(secret));
id = identification_create_from_string(username);
this->creds->add_shared(this->creds, shared_key, id, NULL);
}
METHOD(credential_set_t, create_shared_enumerator, enumerator_t*,
private_android_creds_t *this, shared_key_type_t type,
identification_t *me, identification_t *other)
{
return this->creds->set.create_shared_enumerator(&this->creds->set,
type, me, other);
}
METHOD(android_creds_t, clear, void,
private_android_creds_t *this)
{
this->lock->write_lock(this->lock);
this->creds->clear(this->creds);
this->loaded = FALSE;
this->lock->unlock(this->lock);
}
METHOD(android_creds_t, destroy, void,
private_android_creds_t *this)
{
clear(this);
this->creds->destroy(this->creds);
this->lock->destroy(this->lock);
free(this);
}
/**
* Described in header.
*/
android_creds_t *android_creds_create()
{
private_android_creds_t *this;
INIT(this,
.public = {
.set = {
.create_cert_enumerator = _create_cert_enumerator,
.create_shared_enumerator = _create_shared_enumerator,
.create_private_enumerator = (void*)return_null,
.create_cdp_enumerator = (void*)return_null,
.cache_cert = (void*)nop,
},
.add_username_password = _add_username_password,
.clear = _clear,
.destroy = _destroy,
},
.creds = mem_cred_create(),
.lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
);
return &this->public;
}
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