+/**
+ * @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>
+#include <utils/logger.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;
+}
+
+/**
+ * Implementation of init_config_t.get_other_host.
+ */
+static host_t * get_other_host (private_init_config_t *this)
+{
+ return this->other_host;
+}
+
+/**
+ * Implementation of init_config_t.get_my_host_clone.
+ */
+static host_t * get_my_host_clone (private_init_config_t *this)
+{
+ return this->my_host->clone(this->my_host);
+}
+
+/**
+ * Implementation of init_config_t.get_other_host_clone.
+ */
+static host_t * get_other_host_clone (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);
+
+ /* memcmp doesn't work here */
+ if ((proposals[i].encryption_algorithm == my_current_proposal->encryption_algorithm) &&
+ (proposals[i].encryption_algorithm_key_length == my_current_proposal->encryption_algorithm_key_length) &&
+ (proposals[i].integrity_algorithm == my_current_proposal->integrity_algorithm) &&
+ (proposals[i].integrity_algorithm_key_length == my_current_proposal->integrity_algorithm_key_length) &&
+ (proposals[i].pseudo_random_function == my_current_proposal->pseudo_random_function) &&
+ (proposals[i].pseudo_random_function_key_length == my_current_proposal->pseudo_random_function_key_length) &&
+ (proposals[i].diffie_hellman_group == my_current_proposal->diffie_hellman_group))
+ {
+ /* 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));
+ status_t status;
+
+ *new_proposal = proposal;
+
+
+ if (priority > this->proposals->get_count(this->proposals))
+ {
+ this->proposals->insert_last(this->proposals,new_proposal);
+ return;
+ }
+
+ status = 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_my_host_clone = (host_t*(*)(init_config_t*))get_my_host_clone;
+ this->public.get_other_host_clone = (host_t*(*)(init_config_t*))get_other_host_clone;
+ 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);
+}