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/**
* @file init_config.c
*
* @brief Implementation of init_config_t.
*
*/
/*
* Copyright (C) 2005 Jan Hutter, 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 "init_config.h"
#include <utils/allocator.h>
#include <utils/linked_list.h>
typedef struct private_init_config_t private_init_config_t;
/**
* Private data of an init_config_t object
*/
struct private_init_config_t {
/**
* Public part
*/
init_config_t public;
/**
* Host information of my host.
*/
host_t *my_host;
/**
* Host information of other host.
*/
host_t *other_host;
/**
* Supported proposals
*/
linked_list_t *proposals;
};
/**
* Implementation of init_config_t.get_my_host.
*/
static host_t * get_my_host (private_init_config_t *this)
{
return this->my_host->clone(this->my_host);
}
/**
* Implementation of init_config_t.get_other_host.
*/
static host_t * get_other_host (private_init_config_t *this)
{
return this->other_host->clone(this->other_host);
}
/**
* Implementation of init_config_t.get_dh_group_number.
*/
static diffie_hellman_group_t get_dh_group_number (private_init_config_t *this,size_t priority)
{
ike_proposal_t *ike_proposal;
if ((this->proposals->get_count(this->proposals) == 0) || (this->proposals->get_count(this->proposals) < priority))
{
return MODP_UNDEFINED;
}
this->proposals->get_at_position(this->proposals,(priority -1),(void **) &ike_proposal);
return (ike_proposal->diffie_hellman_group);
}
/**
* Implementation of init_config_t.get_proposals.
*/
static size_t get_proposals (private_init_config_t *this,ike_proposal_t **proposals)
{
iterator_t *iterator;
ike_proposal_t *current_proposal;
int i = 0;
ike_proposal_t *proposal_array;
proposal_array = allocator_alloc(this->proposals->get_count(this->proposals) * sizeof(ike_proposal_t));
iterator = this->proposals->create_iterator(this->proposals,TRUE);
while (iterator->has_next(iterator))
{
iterator->current(iterator,(void **) ¤t_proposal);
proposal_array[i] = (*current_proposal);
i++;
}
iterator->destroy(iterator);
*proposals = proposal_array;
return this->proposals->get_count(this->proposals);
}
/**
* Implementation of init_config_t.select_proposal.
*/
static status_t select_proposal (private_init_config_t *this, ike_proposal_t *proposals, size_t proposal_count, ike_proposal_t *selected_proposal)
{
iterator_t * my_iterator;
int i;
ike_proposal_t *my_current_proposal;
my_iterator = this->proposals->create_iterator(this->proposals,TRUE);
for (i = 0; i < proposal_count; i++)
{
my_iterator->reset(my_iterator);
while (my_iterator->has_next(my_iterator))
{
my_iterator->current(my_iterator,(void **) &my_current_proposal);
if (memcmp(my_current_proposal,&proposals[i],sizeof(ike_proposal_t)) == 0)
{
/* found a matching proposal */
*selected_proposal = *my_current_proposal;
my_iterator->destroy(my_iterator);
return SUCCESS;
}
}
}
my_iterator->destroy(my_iterator);
return NOT_FOUND;
}
/**
* Implementation of init_config_t.destroy.
*/
static void add_proposal (private_init_config_t *this,size_t priority, ike_proposal_t proposal)
{
ike_proposal_t * new_proposal = allocator_alloc(sizeof(ike_proposal_t));
*new_proposal = proposal;
if (priority > this->proposals->get_count(this->proposals))
{
this->proposals->insert_last(this->proposals,new_proposal);
return;
}
this->proposals->insert_at_position(this->proposals,(priority - 1),new_proposal);
}
/**
* Implementation of init_config_t.destroy.
*/
static void destroy (private_init_config_t *this)
{
ike_proposal_t *proposal;
while (this->proposals->get_count(this->proposals) > 0)
{
this->proposals->remove_first(this->proposals,(void **) &proposal);
allocator_free(proposal);
}
this->proposals->destroy(this->proposals);
this->my_host->destroy(this->my_host);
this->other_host->destroy(this->other_host);
allocator_free(this);
}
/**
* Described in header.
*/
init_config_t * init_config_create(char * my_ip, char *other_ip, u_int16_t my_port, u_int16_t other_port)
{
private_init_config_t *this = allocator_alloc_thing(private_init_config_t);
/* public functions */
this->public.get_my_host = (host_t*(*)(init_config_t*))get_my_host;
this->public.get_other_host = (host_t*(*)(init_config_t*))get_other_host;
this->public.get_dh_group_number = (diffie_hellman_group_t (*)(init_config_t*,size_t))get_dh_group_number;
this->public.get_proposals = (size_t(*)(init_config_t*,ike_proposal_t**))get_proposals;
this->public.select_proposal = (status_t(*)(init_config_t*,ike_proposal_t*,size_t,ike_proposal_t*))select_proposal;
this->public.add_proposal = (void(*)(init_config_t*, size_t, ike_proposal_t)) add_proposal;
this->public.destroy = (void(*)(init_config_t*))destroy;
/* private variables */
this->my_host = host_create(AF_INET,my_ip, my_port);
this->other_host = host_create(AF_INET,other_ip, other_port);
this->proposals = linked_list_create();
return (&this->public);
}
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