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/*
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 revosec AG
*
* 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 "callback_cred.h"
typedef struct private_callback_cred_t private_callback_cred_t;
/**
* Private data of an callback_cred_t object.
*/
struct private_callback_cred_t {
/**
* Public callback_cred_t interface.
*/
callback_cred_t public;
/**
* Callback of this set, for all types, and generic
*/
union {
void *generic;
callback_cred_shared_cb_t shared;
} cb;
/**
* Data to pass to callback
*/
void *data;
};
/**
* Shared key enumerator on callbacks
*/
typedef struct {
/* implements enumerator_t */
enumerator_t public;
/* backref to this */
private_callback_cred_t *this;
/* type if requested key */
shared_key_type_t type;
/* own identity to match */
identification_t *me;
/* other identity to match */
identification_t *other;
/* current shared key */
shared_key_t *current;
} shared_enumerator_t;
METHOD(enumerator_t, shared_enumerate, bool,
shared_enumerator_t *this, va_list args)
{
shared_key_t **out;
id_match_t *match_me, *match_other;
VA_ARGS_VGET(args, out, match_me, match_other);
DESTROY_IF(this->current);
this->current = this->this->cb.shared(this->this->data, this->type,
this->me, this->other, match_me, match_other);
if (this->current)
{
*out = this->current;
return TRUE;
}
return FALSE;
}
METHOD(enumerator_t, shared_destroy, void,
shared_enumerator_t *this)
{
DESTROY_IF(this->current);
free(this);
}
METHOD(credential_set_t, create_shared_enumerator, enumerator_t*,
private_callback_cred_t *this, shared_key_type_t type,
identification_t *me, identification_t *other)
{
shared_enumerator_t *enumerator;
INIT(enumerator,
.public = {
.enumerate = enumerator_enumerate_default,
.venumerate = _shared_enumerate,
.destroy = _shared_destroy,
},
.this = this,
.type = type,
.me = me,
.other = other,
);
return &enumerator->public;
}
METHOD(callback_cred_t, destroy, void,
private_callback_cred_t *this)
{
free(this);
}
/**
* Create a generic callback credential set
*/
static private_callback_cred_t* create_generic(void *cb, void *data)
{
private_callback_cred_t *this;
INIT(this,
.public = {
.set = {
.create_shared_enumerator = (void*)return_null,
.create_private_enumerator = (void*)return_null,
.create_cert_enumerator = (void*)return_null,
.create_cdp_enumerator = (void*)return_null,
.cache_cert = (void*)nop,
},
.destroy = _destroy,
},
.cb.generic = cb,
.data = data,
);
return this;
}
/**
* See header
*/
callback_cred_t *callback_cred_create_shared(callback_cred_shared_cb_t cb,
void *data)
{
private_callback_cred_t *this = create_generic(cb, data);
this->public.set.create_shared_enumerator = _create_shared_enumerator;
return &this->public;
}
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