- new configuration support added to ike_sa and states
[strongswan.git] / Source / charon / sa / states / responder_init.c
index 57e7503..fd730db 100644 (file)
@@ -22,7 +22,7 @@
  
 #include "responder_init.h"
 
-#include <globals.h>
+#include <daemon.h>
 #include <sa/states/state.h>
 #include <sa/states/ike_sa_init_responded.h>
 #include <utils/allocator.h>
@@ -89,10 +89,10 @@ struct private_responder_init_t {
        logger_t *logger;
        
        /**
-        * Proposals used to initiate connection
+        * Selected proposal from suggested ones.
         */
-       linked_list_t *proposals;
-       
+       ike_proposal_t selected_proposal;
+
        /**
         * Builds the SA payload for this state.
         * 
@@ -147,6 +147,8 @@ static status_t process_message(private_responder_init_t *this, message_t *messa
        host_t *my_host;
        host_t *other_host;
        randomizer_t *randomizer;
+       init_config_t *init_config;
+       diffie_hellman_group_t dh_group = MODP_UNDEFINED;
 
        exchange_type = message->get_exchange_type(message);
        if (exchange_type != IKE_SA_INIT)
@@ -154,16 +156,26 @@ static status_t process_message(private_responder_init_t *this, message_t *messa
                this->logger->log(this->logger, ERROR | MORE, "Message of type %s not supported in state responder_init",mapping_find(exchange_type_m,exchange_type));
                return FAILED;
        }
-       
        if (!message->get_request(message))
        {
                this->logger->log(this->logger, ERROR | MORE, "Only requests of type IKE_SA_INIT supported in state responder_init");
                return FAILED;
        }
-       
        /* this is the first message we process, so copy host infos */
-       message->get_source(message, &source);
-       message->get_destination(message, &destination);
+       source = message->get_source(message);
+       destination = message->get_destination(message);
+
+       status = charon->configuration_manager->get_init_config_for_host(charon->configuration_manager,destination,source,&init_config);
+
+       if (status != SUCCESS)
+       {
+               /* no configuration matches given host */
+               this->logger->log(this->logger, ERROR | MORE, "No INIT configuration found for given remote and local hosts");
+               return FAILED;
+       }
+       
+       this->ike_sa->set_init_config(this->ike_sa,init_config);
+       
        
        /* we need to clone them, since we destroy the message later */
        my_host = destination->clone(destination);
@@ -179,9 +191,8 @@ static status_t process_message(private_responder_init_t *this, message_t *messa
                this->logger->log(this->logger, ERROR | MORE, "Could not parse body of request message");
                return status;
        }
-
        /* iterate over incoming payloads. We can be sure, the message contains only accepted payloads! */
-       message->get_payload_iterator(message, &payloads);
+       payloads = message->get_payload_iterator(message);
        
        while (payloads->has_next(payloads))
        {
@@ -196,44 +207,30 @@ static status_t process_message(private_responder_init_t *this, message_t *messa
                        case SECURITY_ASSOCIATION:
                        {
                                sa_payload_t *sa_payload = (sa_payload_t*)payload;
-                               iterator_t *suggested_proposals, *accepted_proposals;
-                               proposal_substructure_t *accepted_proposal;
-                               
-                               this->proposals->create_iterator(this->proposals, &accepted_proposals, FALSE);
-                               
+                               ike_proposal_t *ike_proposals;
+                               size_t proposal_count;
+                       
                                /* get the list of suggested proposals */ 
-                               sa_payload->create_proposal_substructure_iterator(sa_payload, &suggested_proposals, TRUE);
-                               
-                               /* now let the configuration-manager select a subset of the proposals */
-                               status = global_configuration_manager->select_proposals_for_host(global_configuration_manager,
-                                                                       this->ike_sa->get_other_host(this->ike_sa), suggested_proposals, accepted_proposals);
+                               status = sa_payload->get_ike_proposals (sa_payload, &ike_proposals,&proposal_count);
                                if (status != SUCCESS)
                                {
-                                       this->logger->log(this->logger, CONTROL | MORE, "No proposal of suggested proposals selected");
-                                       suggested_proposals->destroy(suggested_proposals);
-                                       accepted_proposals->destroy(accepted_proposals);
+                                       this->logger->log(this->logger, ERROR | MORE, "SA payload does not contain IKE proposals");
                                        payloads->destroy(payloads);
-                                       return status;
+                                       return status;  
                                }
-                               
-                               /* iterators are not needed anymore */                  
-                               suggested_proposals->destroy(suggested_proposals);
-                               
-                               /* let the ike_sa create their own transforms from proposal informations */
-                               accepted_proposals->reset(accepted_proposals);
-                               /* TODO check for true*/
-                               accepted_proposals->has_next(accepted_proposals);
-                               status = accepted_proposals->current(accepted_proposals,(void **)&accepted_proposal);
+       
+                               status = init_config->select_proposal(init_config, ike_proposals,proposal_count,&(this->selected_proposal));
+                               allocator_free(ike_proposals);
                                if (status != SUCCESS)
                                {
-                                       this->logger->log(this->logger, ERROR | MORE, "Accepted proposals not supported?!");
-                                       accepted_proposals->destroy(accepted_proposals);
+                                       this->logger->log(this->logger, ERROR | MORE, "No proposal of suggested proposals selected");
                                        payloads->destroy(payloads);
                                        return status;
                                }
                                
-                               status = this->ike_sa->create_transforms_from_proposal(this->ike_sa,accepted_proposal); 
-                               accepted_proposals->destroy(accepted_proposals);
+                               dh_group = this->selected_proposal.diffie_hellman_group;
+                               
+                               status = this->ike_sa->create_transforms_from_proposal(this->ike_sa,&(this->selected_proposal));        
                                if (status != SUCCESS)
                                {
                                        this->logger->log(this->logger, ERROR | MORE, "Transform objects could not be created from selected proposal");
@@ -254,12 +251,9 @@ static status_t process_message(private_responder_init_t *this, message_t *messa
                                
                                group = ke_payload->get_dh_group_number(ke_payload);
                                
-                               status = global_configuration_manager->is_dh_group_allowed_for_host(global_configuration_manager,
-                                                               this->ike_sa->get_other_host(this->ike_sa), group, &allowed_group);
-
-                               if (status != SUCCESS)
+                               if (dh_group == MODP_UNDEFINED)
                                {
-                                       this->logger->log(this->logger, ERROR | MORE, "Could not get informations about DH group");
+                                       this->logger->log(this->logger, ERROR | MORE, "Could not get informations about DH group. SA payload before KE payload?");
                                        payloads->destroy(payloads);
                                        return status;
                                }
@@ -276,7 +270,6 @@ static status_t process_message(private_responder_init_t *this, message_t *messa
                                        payloads->destroy(payloads);
                                        return NOT_SUPPORTED;
                                }
-
                                this->logger->log(this->logger, CONTROL | MORE, "Set other DH public value");
                                
                                dh->set_other_public_value(dh, ke_payload->get_key_exchange_data(ke_payload));
@@ -354,7 +347,7 @@ static status_t process_message(private_responder_init_t *this, message_t *messa
        }
        
        this->logger->log(this->logger, CONTROL|MOST, "Add packet to global send queue");
-        global_send_queue->add(global_send_queue, packet);
+        charon->send_queue->add(charon->send_queue, packet);
 
        /* state can now be changed */
        this->logger->log(this->logger, CONTROL|MOST, "Create next state object");
@@ -389,27 +382,12 @@ static status_t process_message(private_responder_init_t *this, message_t *messa
 static void build_sa_payload(private_responder_init_t *this, payload_t **payload)
 {
        sa_payload_t* sa_payload;
-       iterator_t *proposal_iterator;
        
        /* SA payload takes proposals from this->ike_sa_init_data.proposals and writes them to the created sa_payload */
        
        this->logger->log(this->logger, CONTROL|MORE, "building sa payload");
        
-       this->proposals->create_iterator(this->proposals, &proposal_iterator, FALSE);
-       
-       sa_payload = sa_payload_create();
-       
-       while (proposal_iterator->has_next(proposal_iterator))
-       {
-               proposal_substructure_t *current_proposal;
-               proposal_substructure_t *current_proposal_clone;
-               
-               proposal_iterator->current(proposal_iterator,(void **) &current_proposal);
-               current_proposal->clone(current_proposal,&current_proposal_clone);
-               sa_payload->add_proposal_substructure(sa_payload,current_proposal_clone);
-       }
-       
-       proposal_iterator->destroy(proposal_iterator);  
+       sa_payload = sa_payload_create_from_ike_proposals(&(this->selected_proposal),1);        
        
        *payload = (payload_t *) sa_payload;
 }
@@ -426,6 +404,7 @@ static void build_ke_payload(private_responder_init_t *this, payload_t **payload
        this->diffie_hellman->get_my_public_value(this->diffie_hellman,&key_data);
 
        ke_payload = ke_payload_create();
+       ke_payload->set_key_exchange_data(ke_payload,key_data);
        ke_payload->set_dh_group_number(ke_payload, MODP_1024_BIT);
 
        allocator_free_chunk(&key_data);
@@ -467,13 +446,6 @@ static void destroy(private_responder_init_t *this)
        
        /* destroy stored proposal */
        this->logger->log(this->logger, CONTROL | MOST, "Destroy stored proposals");
-       while (this->proposals->get_count(this->proposals) > 0)
-       {
-               proposal_substructure_t *current_proposal;
-               this->proposals->remove_first(this->proposals,(void **)&current_proposal);
-               current_proposal->destroy(current_proposal);
-       }
-       this->proposals->destroy(this->proposals);
        
        allocator_free(this->sent_nonce.ptr);
        allocator_free(this->received_nonce.ptr);
@@ -494,13 +466,6 @@ static void destroy_after_state_change (private_responder_init_t *this)
        
        /* destroy stored proposal */
        this->logger->log(this->logger, CONTROL | MOST, "Destroy stored proposals");
-       while (this->proposals->get_count(this->proposals) > 0)
-       {
-               proposal_substructure_t *current_proposal;
-               this->proposals->remove_first(this->proposals,(void **)&current_proposal);
-               current_proposal->destroy(current_proposal);
-       }
-       this->proposals->destroy(this->proposals);
        
        /* destroy diffie hellman object */
        if (this->diffie_hellman != NULL)
@@ -535,7 +500,6 @@ responder_init_t *responder_init_create(protected_ike_sa_t *ike_sa)
        this->logger = this->ike_sa->get_logger(this->ike_sa);
        this->sent_nonce = CHUNK_INITIALIZER;
        this->received_nonce = CHUNK_INITIALIZER;
-       this->proposals = linked_list_create();
 
        return &(this->public);
 }