created class init_config_t encapsulating configuration issues of
[strongswan.git] / Source / charon / config / init_config.c
index e69de29..495feb7 100644 (file)
@@ -0,0 +1,210 @@
+/**
+ * @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 **) &current_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);
+}