{
initiate_ike_sa_job_t *initiate_job;
- initiate_job = initiate_ike_sa_job_create("pinflb31");
+ initiate_job = initiate_ike_sa_job_create("pinflb30");
global_event_queue->add_relative(global_event_queue, (job_t*)initiate_job, i * 1000);
}
#include "payloads/ke_payload.h"
#include "payloads/transform_substructure.h"
#include "payloads/transform_attribute.h"
+#include "states/initiator_init.h"
+#include "states/responder_init.h"
-/**
- * Nonce size in bytes of all sent nonces
- */
-#define NONCE_SIZE 16
-
-/**
- * States in which a IKE_SA can actually be
- */
-typedef enum ike_sa_state_e ike_sa_state_t;
-
-enum ike_sa_state_e {
-
- /**
- * IKE_SA is is not in a state
- */
- NO_STATE = 1,
-
- /**
- * A IKE_SA_INIT-message was sent: role initiator
- */
- IKE_SA_INIT_REQUESTED = 2,
-
- /**
- * A IKE_SA_INIT-message was replied: role responder
- */
- IKE_SA_INIT_RESPONDED = 3,
-
- /**
- * An IKE_AUTH-message was sent after a successful
- * IKE_SA_INIT-exchange: role initiator
- */
- IKE_AUTH_REQUESTED = 4,
-
- /**
- * An IKE_AUTH-message was replied: role responder.
- * In this state, all the informations for an IKE_SA
- * and one CHILD_SA are known.
- */
- IKE_SA_INITIALIZED = 5
-};
-
-/**
- * string mappings for ike_sa_state
- */
-mapping_t ike_sa_state_m[] = {
- {NO_STATE, "NO_STATE"},
- {IKE_SA_INIT_REQUESTED, "IKE_SA_INIT_REQUESTED"},
- {IKE_SA_INIT_RESPONDED, "IKE_SA_INIT_RESPONDED"},
- {IKE_AUTH_REQUESTED, "IKE_AUTH_REQUESTED"},
- {IKE_SA_INITIALIZED, "IKE_SA_INITIALIZED"},
- {MAPPING_END, NULL}
-};
/**
- * Private data of an message_t object
+ * @brief implements function process_message of protected_ike_sa_t
*/
-typedef struct private_ike_sa_s private_ike_sa_t;
-
-struct private_ike_sa_s {
-
- /**
- * Public part of a ike_sa_t object
- */
- ike_sa_t public;
-
- /**
- * Builds an empty IKEv2-Message
- *
- * Depending on the type of message (request or response), the message id is
- * either message_id_out or message_id_in.
- *
- *
- * @param this calling object
- * @param type exchange type of new message
- * @param request TRUE, if message has to be a request
- * @param message new message is stored at this location
- * @return
- * - SUCCESS
- * - OUT_OF_RES
- */
- status_t (*build_message) (private_ike_sa_t *this, exchange_type_t type, bool request, message_t **message);
-
- status_t (*build_sa_payload) (private_ike_sa_t *this, sa_payload_t **payload);
- status_t (*build_ke_payload) (private_ike_sa_t *this, ke_payload_t **payload);
- status_t (*build_nonce_payload) (private_ike_sa_t *this, nonce_payload_t **payload);
-
- status_t (*create_delete_job) (private_ike_sa_t *this);
- status_t (*resend_last_reply) (private_ike_sa_t *this);
-
-
- status_t (*transto_ike_sa_init_requested) (private_ike_sa_t *this, char *name);
- status_t (*transto_ike_sa_init_responded) (private_ike_sa_t *this, message_t *message);
- status_t (*transto_ike_auth_requested) (private_ike_sa_t *this, message_t *message);
-
- /* Private values */
- /**
- * Identifier for the current IKE_SA
- */
- ike_sa_id_t *ike_sa_id;
-
- /**
- * Linked List containing the child sa's of the current IKE_SA
- */
- linked_list_t *child_sas;
-
- /**
- * Current state of the IKE_SA
- */
- ike_sa_state_t state;
-
- /**
- * this SA's source for random data
- */
- randomizer_t *randomizer;
-
- /**
- * contains the last responded message
- *
- */
- message_t *last_responded_message;
-
- /**
- * contains the last requested message
- *
- */
- message_t *last_requested_message;
-
- /**
- * Informations of this host
- */
- struct {
- host_t *host;
- } me;
-
- /**
- * Informations of the other host
- */
- struct {
- host_t *host;
- } other;
-
-
- struct {
- /**
- * Diffie Hellman object used to compute shared secret
- */
- diffie_hellman_t *diffie_hellman;
-
- /**
- * Diffie Hellman group number
- */
- u_int16_t dh_group_number;
-
- /**
- * Priority used get matching dh_group number
- */
- u_int16_t dh_group_priority;
-
- /**
- * selected proposals
- */
- linked_list_t *proposals;
-
- /**
- * Sent nonce value
- */
- chunk_t sent_nonce;
-
- /**
- * received nonce value
- */
- chunk_t received_nonce;
- } ike_sa_init_data;
-
-
- /**
- * next message id to receive
- */
- u_int32_t message_id_in;
-
- /**
- * next message id to send
- */
- u_int32_t message_id_out;
-
- /**
- * a logger for this IKE_SA
- */
- logger_t *logger;
-};
-
-/**
- * @brief implements function process_message of private_ike_sa_t
- */
-static status_t process_message (private_ike_sa_t *this, message_t *message)
+static status_t process_message (protected_ike_sa_t *this, message_t *message)
{
u_int32_t message_id;
- bool is_request;
exchange_type_t exchange_type;
- /* we must process each request or response from remote host
- * the check if a given message is possible for a given state is done in here
- */
+ bool is_request;
+ status_t status;
+ state_t *new_state;
+
+ /* we must process each request or response from remote host */
/* find out type of message (request or response) */
is_request = message->get_request(message);
exchange_type = message->get_exchange_type(message);
- this->logger->log(this->logger, CONTROL|MORE, "Process %s message of exchange type %s",(is_request) ? "REQUEST" : "RESPONSE",
- mapping_find(exchange_type_m,exchange_type));
+ this->logger->log(this->logger, CONTROL|MORE, "Process %s message of exchange type %s",(is_request) ? "REQUEST" : "RESPONSE",mapping_find(exchange_type_m,exchange_type));
message_id = message->get_message_id(message);
}
}
- /* Now, the exchange type is checked and the appropriate transition handler is called*/
- switch (message->get_exchange_type(message))
+ /* now the message is processed by the current state object */
+ status = this->current_state->process_message(this->current_state,message,&new_state);
+ if (status == SUCCESS)
{
- case IKE_SA_INIT:
- {
-
- if (message->get_request(message)) {
- if (this->state == NO_STATE)
- {
- /* state transission NO_STATE => IKE_SA_INIT_RESPONDED */
- return this->transto_ike_sa_init_responded(this, message);
- }
- }
- else
- {
- if (this->state == IKE_SA_INIT_REQUESTED)
- {
- /* state transission IKE_SA_INIT_REQUESTED => IKE_AUTH_REQUESTED*/
- return this->transto_ike_auth_requested(this, message);
- }
- }
-
- this->logger->log(this->logger, ERROR | MORE, "Message in current state %s not supported",mapping_find(ike_sa_state_m,this->state));
-
- break;
- }
- case IKE_AUTH:
- {
- if (this->state <= IKE_SA_INIT_REQUESTED)
- {
- this->logger->log(this->logger, ERROR | MORE, "Current state %s of IKE_SA does not allow IKE_AUTH message",mapping_find(ike_sa_state_m,this->state));
- return FAILED;
- }
- break;
- }
- case CREATE_CHILD_SA:
- {
- if (this->state < IKE_SA_INITIALIZED)
- {
- this->logger->log(this->logger, ERROR | MORE, "Current state %s of IKE_SA does not allow CREATE_CHILD_SA message",mapping_find(ike_sa_state_m,this->state));
- return FAILED;
- }
- break;
- }
- case INFORMATIONAL:
- {
- break;
- }
- default:
- {
- this->logger->log(this->logger, ERROR, "processing %s-message not supported.",
- mapping_find(exchange_type_m,message->get_exchange_type(message)));
- return NOT_SUPPORTED;
- }
+ this->current_state = new_state;
}
- this->logger->log(this->logger, CONTROL, "received %s-message in state %s, not handled.",
- mapping_find(exchange_type_m, message->get_exchange_type(message)),
- mapping_find(ike_sa_state_m, this->state));
- return INVALID_STATE;
+ return status;
}
/**
- * @brief Implements function build_message of private_ike_sa_t.
+ * @brief Implements function build_message of protected_ike_sa_t.
*/
-static status_t build_message(private_ike_sa_t *this, exchange_type_t type, bool request, message_t **message)
+static status_t build_message(protected_ike_sa_t *this, exchange_type_t type, bool request, message_t **message)
{
status_t status;
message_t *new_message;
}
/**
- * @brief Implements function transto_ike_sa_init_requested of private_ike_sa_t.
+ * @brief implements function process_configuration of protected_ike_sa_t
*/
-static status_t transto_ike_sa_init_requested(private_ike_sa_t *this, char *name)
+static status_t initialize_connection(protected_ike_sa_t *this, char *name)
{
- message_t *message;
- payload_t *payload;
- packet_t *packet;
+ /* work is done in state object of type INITIATOR_INIT */
+ initiator_init_t *current_state;
status_t status;
- linked_list_iterator_t *proposal_iterator;
-
- this->logger->log(this->logger, CONTROL, "Initializing connection %s",name);
-
- status = global_configuration_manager->get_local_host(global_configuration_manager, name, &(this->me.host));
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR | MORE, "Could not retrieve local host configuration information for %s",name);
- return INVALID_ARG;
- }
-
- status = global_configuration_manager->get_remote_host(global_configuration_manager, name, &(this->other.host));
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR | MORE, "Could not retrieve remote host configuration information for %s",name);
- return INVALID_ARG;
- }
-
- status = global_configuration_manager->get_dh_group_number(global_configuration_manager, name, &(this->ike_sa_init_data.dh_group_number), this->ike_sa_init_data.dh_group_priority);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR | MORE, "Could not retrieve DH group number for %s",name);
- return INVALID_ARG;
- }
-
- if (this->ike_sa_init_data.proposals->get_count(this->ike_sa_init_data.proposals) > 0)
- {
- this->logger->log(this->logger, ERROR, "Proposals allready existing!");
- return FAILED;
- }
-
- status = this->ike_sa_init_data.proposals->create_iterator(this->ike_sa_init_data.proposals, &proposal_iterator, FALSE);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Fatal error: Could not create iterator on list for proposals");
- return status;
- }
-
- status = global_configuration_manager->get_proposals_for_host(global_configuration_manager, this->other.host, proposal_iterator);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR | MORE, "Could not retrieve Proposals for %s",name);
- return status;
- }
- /* not needed anymore */
- proposal_iterator->destroy(proposal_iterator);
+ state_t *new_state;
- if (this->ike_sa_init_data.diffie_hellman != NULL)
+ if (this->current_state->get_state(this->current_state) != INITIATOR_INIT)
{
- this->logger->log(this->logger, ERROR, "Object of type diffie_hellman_t already existing!");
return FAILED;
}
- this ->logger->log(this->logger, CONTROL|MOST, "create diffie hellman object");
- this->ike_sa_init_data.diffie_hellman = diffie_hellman_create(this->ike_sa_init_data.dh_group_number);
- if (this->ike_sa_init_data.diffie_hellman == NULL)
- {
- this->logger->log(this->logger, ERROR, "Object of type diffie_hellman_t could not be created!");
- return FAILED;
- }
- if (this->ike_sa_init_data.sent_nonce.ptr != NULL)
- {
- this->logger->log(this->logger, ERROR, "Nonce for IKE_SA_INIT phase already existing!");
- return FAILED;
- }
-
- if (this->randomizer->allocate_pseudo_random_bytes(this->randomizer, NONCE_SIZE, &(this->ike_sa_init_data.sent_nonce)) != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not create nonce!");
- return OUT_OF_RES;
- }
-
+ current_state = (initiator_init_t *) this->current_state;
- /* going to build message */
- status = this->build_message(this, IKE_SA_INIT, TRUE, &message);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not build message");
- return status;
- }
-
- /* build SA payload */
- status = this->build_sa_payload(this, (sa_payload_t**)&payload);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not build SA payload");
- message->destroy(message);
- return status;
- }
-
- this ->logger->log(this->logger, CONTROL|MOST, "add SA payload to message");
- status = message->add_payload(message, payload);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not add SA payload to message");
- message->destroy(message);
- return status;
- }
-
+ status = current_state->initiate_connection(current_state,name,&new_state);
- /* build KE payload */
- status = this->build_ke_payload(this,(ke_payload_t **) &payload);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not build KE payload");
- message->destroy(message);
- return status;
- }
-
- this ->logger->log(this->logger, CONTROL|MOST, "add KE payload to message");
- status = message->add_payload(message, payload);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not add KE payload to message");
- message->destroy(message);
- return status;
- }
-
- /* build Nonce payload */
- status = this->build_nonce_payload(this, (nonce_payload_t**)&payload);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not build NONCE payload");
- message->destroy(message);
- return status;
- }
-
- this ->logger->log(this->logger, CONTROL|MOST, "add nonce payload to message");
- status = message->add_payload(message, payload);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not add nonce payload to message");
- message->destroy(message);
- return status;
- }
-
- /* generate packet */
- this ->logger->log(this->logger, CONTROL|MOST, "generate packet from message");
- status = message->generate(message, &packet);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Fatal error: could not generate packet from message");
- message->destroy(message);
- return status;
- }
-
- this ->logger->log(this->logger, CONTROL|MOST, "Add packet to global send queue");
- status = global_send_queue->add(global_send_queue, packet);
- if (status != SUCCESS)
+ if (status == SUCCESS)
{
- this->logger->log(this->logger, ERROR, "Could not add packet to send queue");
- message->destroy(message);
- return status;
+ this->current_state = new_state;
}
-
- if ( this->last_requested_message != NULL)
- {
- /* destroy message */
- this ->logger->log(this->logger, CONTROL|MOST, "Destroy stored last requested message");
- this->last_requested_message->destroy(this->last_requested_message);
- }
-
- this->last_requested_message = message;
-
- /* message counter can now be increased */
- this->message_id_out++;
-
- /* state has NOW changed :-) */
- this ->logger->log(this->logger, CONTROL|MORE, "Change state of IKE_SA from %s to %s",mapping_find(ike_sa_state_m,this->state),mapping_find(ike_sa_state_m,IKE_SA_INIT_REQUESTED) );
- this->state = IKE_SA_INIT_REQUESTED;
-
- return SUCCESS;
-}
-
-static status_t transto_ike_sa_init_responded(private_ike_sa_t *this, message_t *request)
-{
- status_t status;
- linked_list_iterator_t *payloads;
- message_t *response;
- host_t *source, *destination;
- payload_t *payload;
- packet_t *packet;
-
- /* this is the first message we process, so copy host infos */
- request->get_source(request, &source);
- request->get_destination(request, &destination);
- /* we need to clone them, since we destroy the message later */
- destination->clone(destination, &(this->me.host));
- source->clone(source, &(this->other.host));
-
- /* parse incoming message */
- status = request->parse_body(request);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR | MORE, "Could not parse body of request message");
- this->create_delete_job(this);
- return status;
- }
-
- /* iterate over incoming payloads. We can be sure, the message contains only accepted payloads! */
- status = request->get_payload_iterator(request, &payloads);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Fatal error: Could not get payload interator");
- this->create_delete_job(this);
- return status;
- }
-
- while (payloads->has_next(payloads))
- {
- payload_t *payload;
-
- /* get current payload */
- payloads->current(payloads, (void**)&payload);
-
- this->logger->log(this->logger, CONTROL|MORE, "Processing payload of type %s", mapping_find(payload_type_m, payload->get_type(payload)));
- switch (payload->get_type(payload))
- {
- case SECURITY_ASSOCIATION:
- {
- sa_payload_t *sa_payload = (sa_payload_t*)payload;
- linked_list_iterator_t *suggested_proposals, *accepted_proposals;
-
- status = this->ike_sa_init_data.proposals->create_iterator(this->ike_sa_init_data.proposals, &accepted_proposals, FALSE);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Fatal error: Could not create iterator on list for proposals");
- payloads->destroy(payloads);
- this->create_delete_job(this);
- return status;
- }
-
- /* get the list of suggested proposals */
- status = sa_payload->create_proposal_substructure_iterator(sa_payload, &suggested_proposals, TRUE);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Fatal error: Could not create iterator on suggested proposals");
- accepted_proposals->destroy(accepted_proposals);
- payloads->destroy(payloads);
- this->create_delete_job(this);
- return status;
- }
-
- /* now let the configuration-manager select a subset of the proposals */
- status = global_configuration_manager->select_proposals_for_host(global_configuration_manager,
- this->other.host, suggested_proposals, accepted_proposals);
- 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);
- payloads->destroy(payloads);
- this->create_delete_job(this);
- return status;
- }
-
- /* iterators are not needed anymore */
- suggested_proposals->destroy(suggested_proposals);
- accepted_proposals->destroy(accepted_proposals);
-
- this->logger->log(this->logger, CONTROL | MORE, "SA Payload processed");
- /* ok, we have what we need for sa_payload (proposals are stored in this->proposals)*/
- break;
- }
- case KEY_EXCHANGE:
- {
- ke_payload_t *ke_payload = (ke_payload_t*)payload;
- diffie_hellman_group_t group;
- diffie_hellman_t *dh;
- bool allowed_group;
-
- group = ke_payload->get_dh_group_number(ke_payload);
-
- status = global_configuration_manager->is_dh_group_allowed_for_host(global_configuration_manager,
- this->other.host, group, &allowed_group);
-
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR | MORE, "Could not get informations about DH group");
- payloads->destroy(payloads);
- this->create_delete_job(this);
- return status;
- }
- if (!allowed_group)
- {
- /** @todo Send info reply */
- }
-
- /* create diffie hellman object to handle DH exchange */
- dh = diffie_hellman_create(group);
- if (dh == NULL)
- {
- this->logger->log(this->logger, ERROR, "Could not generate DH object");
- payloads->destroy(payloads);
- this->create_delete_job(this);
- return OUT_OF_RES;
- }
-
- this->logger->log(this->logger, CONTROL | MORE, "Set other DH public value");
-
- status = dh->set_other_public_value(dh, ke_payload->get_key_exchange_data(ke_payload));
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not set other DH public value");
- dh->destroy(dh);
- payloads->destroy(payloads);
- this->create_delete_job(this);
- return OUT_OF_RES;
- }
-
- if (this->ike_sa_init_data.diffie_hellman != NULL)
- {
- this->logger->log(this->logger, CONTROL | MORE, "Going to destroy allready existing diffie_hellman object");
- this->ike_sa_init_data.diffie_hellman->destroy(this->ike_sa_init_data.diffie_hellman);
- }
- this->ike_sa_init_data.diffie_hellman = dh;
-
- this->logger->log(this->logger, CONTROL | MORE, "KE Payload processed");
- break;
- }
- case NONCE:
- {
- nonce_payload_t *nonce_payload = (nonce_payload_t*)payload;
- chunk_t nonce;
-
- this->logger->log(this->logger, CONTROL | MORE, "Get nonce value and store it");
- nonce_payload->get_nonce(nonce_payload, &nonce);
- /** @todo free if there is already one */
- this->ike_sa_init_data.received_nonce.ptr = allocator_clone_bytes(nonce.ptr, nonce.len);
- this->ike_sa_init_data.received_nonce.len = nonce.len;
- if (this->ike_sa_init_data.received_nonce.ptr == NULL)
- {
- payloads->destroy(payloads);
- this->create_delete_job(this);
- return OUT_OF_RES;
- }
-
- this->logger->log(this->logger, CONTROL | MORE, "Nonce Payload processed");
- break;
- }
- default:
- {
- this->logger->log(this->logger, ERROR | MORE, "Payload type not supported!");
- payloads->destroy(payloads);
- this->create_delete_job(this);
- return OUT_OF_RES;
- }
-
- }
-
- }
- /* iterator can be destroyed */
- payloads->destroy(payloads);
-
- this->logger->log(this->logger, CONTROL | MORE, "Request successfully handled. Going to create reply.");
-
-
- if (this->ike_sa_init_data.sent_nonce.ptr != NULL)
- {
- this->logger->log(this->logger, ERROR, "Nonce for IKE_SA_INIT phase already existing!");
- return FAILED;
- }
-
- this->logger->log(this->logger, CONTROL | MOST, "Going to create nonce.");
- if (this->randomizer->allocate_pseudo_random_bytes(this->randomizer, NONCE_SIZE, &(this->ike_sa_init_data.sent_nonce)) != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not create nonce!");
- return OUT_OF_RES;
- }
-
-
- /* set up the reply */
- status = this->build_message(this, IKE_SA_INIT, FALSE, &response);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not create empty message");
- this->create_delete_job(this);
- return status;
- }
-
- /* build SA payload */
- status = this->build_sa_payload(this, (sa_payload_t**)&payload);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not build SA payload");
- this->create_delete_job(this);
- response->destroy(response);
- return status;
- }
-
- this ->logger->log(this->logger, CONTROL|MOST, "add SA payload to message");
- status = response->add_payload(response, payload);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not add SA payload to message");
- this->create_delete_job(this);
- response->destroy(response);
- return status;
- }
-
- /* build KE payload */
- status = this->build_ke_payload(this,(ke_payload_t **) &payload);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not build KE payload");
- this->create_delete_job(this);
- response->destroy(response);
- return status;
- }
-
- this ->logger->log(this->logger, CONTROL|MOST, "add KE payload to message");
- status = response->add_payload(response, payload);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not add KE payload to message");
- this->create_delete_job(this);
- response->destroy(response);
- return status;
- }
-
- /* build Nonce payload */
- status = this->build_nonce_payload(this, (nonce_payload_t**)&payload);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not build NONCE payload");
- this->create_delete_job(this);
- response->destroy(response);
- return status;
- }
-
- this ->logger->log(this->logger, CONTROL|MOST, "add nonce payload to message");
- status = response->add_payload(response, payload);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not add nonce payload to message");
- this->create_delete_job(this);
- response->destroy(response);
- return status;
- }
-
- /* generate packet */
- this ->logger->log(this->logger, CONTROL|MOST, "generate packet from message");
- status = response->generate(response, &packet);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Fatal error: could not generate packet from message");
- this->create_delete_job(this);
- response->destroy(response);
- return status;
- }
-
- this ->logger->log(this->logger, CONTROL|MOST, "Add packet to global send queue");
- status = global_send_queue->add(global_send_queue, packet);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not add packet to send queue");
- this->create_delete_job(this);
- response->destroy(response);
- return status;
- }
-
- if ( this->last_responded_message != NULL)
- {
- /* destroy message */
- this ->logger->log(this->logger, CONTROL|MOST, "Destroy stored last responded message");
- this->last_responded_message->destroy(this->last_responded_message);
- }
-
- this->last_responded_message = response;
-
- /* state has NOW changed :-) */
- this ->logger->log(this->logger, CONTROL|MORE, "Change state of IKE_SA from %s to %s",mapping_find(ike_sa_state_m,this->state),mapping_find(ike_sa_state_m,IKE_SA_INIT_REQUESTED) );
- this->state = IKE_SA_INIT_RESPONDED;
-
-
- return SUCCESS;
-}
-
-static status_t transto_ike_auth_requested(private_ike_sa_t *this, message_t *response)
-{
- status_t status;
- linked_list_iterator_t *payloads;
-
-
- /* parse incoming message */
- status = response->parse_body(response);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not parse body");
- return status;
- }
- /* iterate over incoming payloads */
- status = response->get_payload_iterator(response, &payloads);
- if (status != SUCCESS)
- {
- response->destroy(response);
- return status;
- }
- while (payloads->has_next(payloads))
- {
- payload_t *payload;
- payloads->current(payloads, (void**)&payload);
-
- this->logger->log(this->logger, CONTROL|MORE, "Processing payload %s", mapping_find(payload_type_m, payload->get_type(payload)));
- switch (payload->get_type(payload))
- {
-// case SECURITY_ASSOCIATION:
-// {
-// sa_payload_t *sa_payload = (sa_payload_t*)payload;
-// linked_list_iterator_t *suggested_proposals, *accepted_proposals;
-// /* create a list for accepted proposals */
-// if (this->ike_sa_init_data.proposals == NULL) {
-// this->ike_sa_init_data.proposals = linked_list_create();
-// }
-// else
-// {
-// /** @todo destroy list contents */
-// }
-// if (this->ike_sa_init_data.proposals == NULL)
-// {
-// payloads->destroy(payloads);
-// return OUT_OF_RES;
-// }
-// status = this->ike_sa_init_data.proposals->create_iterator(this->ike_sa_init_data.proposals, &accepted_proposals, FALSE);
-// if (status != SUCCESS)
-// {
-// payloads->destroy(payloads);
-// return status;
-// }
-//
-// /* get the list of suggested proposals */
-// status = sa_payload->create_proposal_substructure_iterator(sa_payload, &suggested_proposals, TRUE);
-// if (status != SUCCESS)
-// {
-// accepted_proposals->destroy(accepted_proposals);
-// payloads->destroy(payloads);
-// return status;
-// }
-//
-// /* now let the configuration-manager select a subset of the proposals */
-// status = global_configuration_manager->select_proposals_for_host(global_configuration_manager,
-// this->other.host, suggested_proposals, accepted_proposals);
-// if (status != SUCCESS)
-// {
-// suggested_proposals->destroy(suggested_proposals);
-// accepted_proposals->destroy(accepted_proposals);
-// payloads->destroy(payloads);
-// return status;
-// }
-//
-// suggested_proposals->destroy(suggested_proposals);
-// accepted_proposals->destroy(accepted_proposals);
-//
-// /* ok, we have what we need for sa_payload */
-// break;
-// }
- case KEY_EXCHANGE:
- {
- ke_payload_t *ke_payload = (ke_payload_t*)payload;
- diffie_hellman_t *dh;
- chunk_t shared_secret;
-
- dh = this->ike_sa_init_data.diffie_hellman;
-
-
- status = dh->set_other_public_value(dh, ke_payload->get_key_exchange_data(ke_payload));
- if (status != SUCCESS)
- {
- dh->destroy(dh);
- payloads->destroy(payloads);
- return OUT_OF_RES;
- }
-
- status = dh->get_shared_secret(dh, &shared_secret);
-
- this->logger->log_chunk(this->logger, RAW, "Shared secret", &shared_secret);
-
- break;
- }
- case NONCE:
- {
- nonce_payload_t *nonce_payload = (nonce_payload_t*)payload;
- chunk_t nonce;
-
- nonce_payload->get_nonce(nonce_payload, &nonce);
- /** @todo free if there is already one */
- this->ike_sa_init_data.received_nonce.ptr = allocator_clone_bytes(nonce.ptr, nonce.len);
- this->ike_sa_init_data.received_nonce.len = nonce.len;
- if (this->ike_sa_init_data.received_nonce.ptr == NULL)
- {
- payloads->destroy(payloads);
- return OUT_OF_RES;
- }
- break;
- }
- default:
- {
- /** @todo handle */
- }
-
- }
-
- }
- payloads->destroy(payloads);
-
- printf("done.\n");
-
- /* set up the reply */
- status = this->build_message(this, IKE_SA_INIT, FALSE, &response);
- if (status != SUCCESS)
+ else
{
this->create_delete_job(this);
- return status;
}
-
- response->destroy(response);
-
- return SUCCESS;
-
-
-}
-
-/**
- * @brief implements function process_configuration of private_ike_sa_t
- */
-static status_t initialize_connection(private_ike_sa_t *this, char *name)
-{
- /* work is done in transto_ike_sa_init_requested */
- return (this->transto_ike_sa_init_requested(this,name));
+ return status;
}
/**
- * @brief implements function private_ike_sa_t.get_id
+ * @brief implements function protected_ike_sa_t.get_id
*/
-static ike_sa_id_t* get_id(private_ike_sa_t *this)
+static ike_sa_id_t* get_id(protected_ike_sa_t *this)
{
return this->ike_sa_id;
}
/**
- * implements private_ike_sa_t.build_sa_payload
+ * @brief implements function resend_last_reply of protected_ike_sa_t
*/
-static status_t build_sa_payload(private_ike_sa_t *this, sa_payload_t **payload)
-{
- sa_payload_t* sa_payload;
- linked_list_iterator_t *proposal_iterator;
- status_t status;
-
-
- /* 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");
-
- status = this->ike_sa_init_data.proposals->create_iterator(this->ike_sa_init_data.proposals, &proposal_iterator, FALSE);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Fatal error: Could not create iterator on list for proposals");
- return status;
- }
-
- sa_payload = sa_payload_create();
- if (sa_payload == NULL)
- {
- this->logger->log(this->logger, ERROR, "Fatal error: Could not create SA payload object");
- return OUT_OF_RES;
- }
-
- while (proposal_iterator->has_next(proposal_iterator))
- {
- proposal_substructure_t *current_proposal;
- proposal_substructure_t *current_proposal_clone;
- status = proposal_iterator->current(proposal_iterator,(void **) ¤t_proposal);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not get current proposal needed to copy");
- sa_payload->destroy(sa_payload);
- return status;
- }
- status = current_proposal->clone(current_proposal,¤t_proposal_clone);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not clone current proposal");
- sa_payload->destroy(sa_payload);
- return status;
- }
-
- status = sa_payload->add_proposal_substructure(sa_payload,current_proposal_clone);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not add cloned proposal to SA payload");
- sa_payload->destroy(sa_payload);
- return status;
- }
-
- }
-
- this->logger->log(this->logger, CONTROL|MORE, "sa payload buildet");
-
- *payload = sa_payload;
-
- return SUCCESS;
-}
-
-static status_t build_ke_payload(private_ike_sa_t *this, ke_payload_t **payload)
-{
- ke_payload_t *ke_payload;
- chunk_t key_data;
- status_t status;
-
- this->logger->log(this->logger, CONTROL|MORE, "building ke payload");
-
- if (this->state != NO_STATE)
- {
- this->logger->log(this->logger, ERROR, "KE payload in state %s not supported",mapping_find(ike_sa_state_m,this->state));
- return FALSE;
- }
-
- switch(this->ike_sa_id->is_initiator(this->ike_sa_id))
- {
- case TRUE:
- case FALSE:
- {
- this ->logger->log(this->logger, CONTROL|MORE, "get public dh value to send in ke payload");
- status = this->ike_sa_init_data.diffie_hellman->get_my_public_value(this->ike_sa_init_data.diffie_hellman,&key_data);
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not get my DH public value");
- return status;
- }
-
- ke_payload = ke_payload_create();
- if (ke_payload == NULL)
- {
- this->logger->log(this->logger, ERROR, "Could not create KE payload");
- allocator_free_chunk(key_data);
- return OUT_OF_RES;
- }
- ke_payload->set_dh_group_number(ke_payload, MODP_1024_BIT);
- if (ke_payload->set_key_exchange_data(ke_payload, key_data) != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Could not set key exchange data of KE payload");
- ke_payload->destroy(ke_payload);
- allocator_free_chunk(key_data);
- return OUT_OF_RES;
- }
- allocator_free_chunk(key_data);
-
- *payload = ke_payload;
- return SUCCESS;
- }
- }
-
- return FAILED;
-}
-
-/**
- * implements private_ike_sa_t.build_nonce_payload
- */
-static status_t build_nonce_payload(private_ike_sa_t *this, nonce_payload_t **payload)
-{
- nonce_payload_t *nonce_payload;
- status_t status;
-
- this->logger->log(this->logger, CONTROL|MORE, "building nonce payload");
-
- if (this->state != NO_STATE)
- {
- this->logger->log(this->logger, ERROR, "Nonce payload in state %s not supported",mapping_find(ike_sa_state_m,this->state));
- return FALSE;
- }
-
- nonce_payload = nonce_payload_create();
- if (nonce_payload == NULL)
- {
- this->logger->log(this->logger, ERROR, "Fatal error: could not create nonce payload object");
- return OUT_OF_RES;
- }
-
- status = nonce_payload->set_nonce(nonce_payload, this->ike_sa_init_data.sent_nonce);
-
- if (status != SUCCESS)
- {
- this->logger->log(this->logger, ERROR, "Fatal error: could not set nonce data of payload");
- nonce_payload->destroy(nonce_payload);
- return status;
- }
-
- *payload = nonce_payload;
-
- return SUCCESS;
-}
-
-/**
- * @brief implements function resend_last_reply of private_ike_sa_t
- */
-status_t resend_last_reply (private_ike_sa_t *this)
+status_t resend_last_reply (protected_ike_sa_t *this)
{
packet_t *packet;
status_t status;
return SUCCESS;
}
-status_t create_delete_job (private_ike_sa_t *this)
+status_t create_delete_job (protected_ike_sa_t *this)
{
job_t *delete_job;
status_t status;
}
/**
- * @brief implements function destroy of private_ike_sa_t
+ * @brief implements function destroy of protected_ike_sa_t
*/
-static status_t destroy (private_ike_sa_t *this)
+static status_t destroy (protected_ike_sa_t *this)
{
this->logger->log(this->logger, CONTROL | MORE, "Going to destroy IKE_SA");
-
+
/* destroy child sa's */
this->logger->log(this->logger, CONTROL | MOST, "Destroy all child_sa's");
while (this->child_sas->get_count(this->child_sas) > 0)
this->last_responded_message->destroy(this->last_responded_message);
}
- /* destroy stored proposal */
- this->logger->log(this->logger, CONTROL | MOST, "Destroy stored proposals");
- while (this->ike_sa_init_data.proposals->get_count(this->ike_sa_init_data.proposals) > 0)
- {
- proposal_substructure_t *current_proposal;
- this->ike_sa_init_data.proposals->remove_first(this->ike_sa_init_data.proposals,(void **)¤t_proposal);
- current_proposal->destroy(current_proposal);
- }
- this->ike_sa_init_data.proposals->destroy(this->ike_sa_init_data.proposals);
-
-
this->logger->log(this->logger, CONTROL | MOST, "Destroy randomizer");
this->randomizer->destroy(this->randomizer);
-
- /* destroy ike_sa_init data */
- this->logger->log(this->logger, CONTROL | MOST, "Going to destroy ike_sa_init data");
- if (this->ike_sa_init_data.diffie_hellman != NULL)
- {
- this->logger->log(this->logger, CONTROL | MOST, "Destroy diffie hellman object");
- this->ike_sa_init_data.diffie_hellman->destroy(this->ike_sa_init_data.diffie_hellman);
- }
- if (this->ike_sa_init_data.sent_nonce.ptr != NULL)
- {
- this->logger->log(this->logger, CONTROL | MOST, "Destroy sent nonce data");
- allocator_free_chunk(this->ike_sa_init_data.sent_nonce);
- }
- if (this->ike_sa_init_data.received_nonce.ptr != NULL)
- {
- this->logger->log(this->logger, CONTROL | MOST, "Destroy received nonce data");
- allocator_free_chunk(this->ike_sa_init_data.received_nonce);
- }
-
- if (this->me.host != NULL)
- {
- this->logger->log(this->logger, CONTROL | MOST, "Destroy host informations of me");
- this->me.host->destroy(this->me.host);
- }
-
- if (this->other.host != NULL)
- {
- this->logger->log(this->logger, CONTROL | MOST, "Destroy host informations of other");
- this->other.host->destroy(this->other.host);
- }
-
-
- this->logger->log(this->logger, CONTROL | MOST, "Destroy logger of IKE_SA");
- global_logger_manager->destroy_logger(global_logger_manager, this->logger);
-
- allocator_free(this);
+// if (this->me.host != NULL)
+// {
+// this->logger->log(this->logger, CONTROL | MOST, "Destroy host informations of me");
+// this->me.host->destroy(this->me.host);
+// }
+//
+// if (this->other.host != NULL)
+// {
+// this->logger->log(this->logger, CONTROL | MOST, "Destroy host informations of other");
+// this->other.host->destroy(this->other.host);
+// }
+//
+// this->logger->log(this->logger, CONTROL | MOST, "Destroy current state object");
+// this->current_state->destroy(this->current_state);
+//
+// this->logger->log(this->logger, CONTROL | MOST, "Destroy logger of IKE_SA");
+// global_logger_manager->destroy_logger(global_logger_manager, this->logger);
+//
+// allocator_free(this);
return SUCCESS;
}
*/
ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id)
{
- private_ike_sa_t *this = allocator_alloc_thing(private_ike_sa_t);
+ protected_ike_sa_t *this = allocator_alloc_thing(protected_ike_sa_t);
if (this == NULL)
{
return NULL;
this->public.destroy = (status_t(*)(ike_sa_t*))destroy;
/* private functions */
- this->build_sa_payload = build_sa_payload;
- this->build_nonce_payload = build_nonce_payload;
- this->build_ke_payload = build_ke_payload;
this->build_message = build_message;
- this->transto_ike_sa_init_requested = transto_ike_sa_init_requested;
- this->transto_ike_sa_init_responded = transto_ike_sa_init_responded;
- this->transto_ike_auth_requested = transto_ike_auth_requested;
this->resend_last_reply = resend_last_reply;
this->create_delete_job = create_delete_job;
-
/* initialize private fields */
this->logger = global_logger_manager->create_logger(global_logger_manager, IKE_SA, NULL);
if (this->logger == NULL)
this->me.host = NULL;
this->other.host = NULL;
- this->ike_sa_init_data.diffie_hellman = NULL;
- this->ike_sa_init_data.dh_group_number = 0;
- /* 1 means highest priority */
- this->ike_sa_init_data.dh_group_priority = 1;
- this->ike_sa_init_data.sent_nonce.len = 0;
- this->ike_sa_init_data.sent_nonce.ptr = NULL;
- this->ike_sa_init_data.received_nonce.len = 0;
- this->ike_sa_init_data.received_nonce.ptr = NULL;
- this->ike_sa_init_data.proposals = linked_list_create();
- if (this->ike_sa_init_data.proposals == NULL)
- {
- this->logger->log(this->logger, ERROR, "Fatal error: Could not create list for child_sa's");
- this->child_sas->destroy(this->child_sas);
- this->ike_sa_id->destroy(this->ike_sa_id);
- this->randomizer->destroy(this->randomizer);
- global_logger_manager->destroy_logger(global_logger_manager,this->logger);
- allocator_free(this);
- }
this->last_requested_message = NULL;
this->last_responded_message = NULL;
this->message_id_out = 0;
this->message_id_in = 0;
- /* at creation time, IKE_SA isn't in a specific state */
- this->state = NO_STATE;
+ /* at creation time, IKE_SA is in a initiator state */
+ if (ike_sa_id->is_initiator(ike_sa_id))
+ {
+ this->current_state = (state_t *) initiator_init_create(this);
+ }
+ else
+ {
+ this->current_state = (state_t *) responder_init_create(this);
+ }
+
return (&this->public);
}
#include "types.h"
#include "message.h"
#include "ike_sa_id.h"
+#include "utils/logger.h"
+#include "utils/randomizer.h"
+#include "states/state.h"
+
+
+
+/**
+ * Nonce size in bytes of all sent nonces
+ */
+#define NONCE_SIZE 16
/**
* @brief This class is used to represent an IKE_SA
};
/**
+ * Protected data of an ike_sa_t object
+ */
+typedef struct protected_ike_sa_s protected_ike_sa_t;
+
+struct protected_ike_sa_s {
+
+ /**
+ * Public part of a ike_sa_t object
+ */
+ ike_sa_t public;
+
+ /**
+ * Builds an empty IKEv2-Message and fills in default informations.
+ *
+ * Depending on the type of message (request or response), the message id is
+ * either message_id_out or message_id_in.
+ *
+ * Used in every state.
+ *
+ * @param this calling object
+ * @param type exchange type of new message
+ * @param request TRUE, if message has to be a request
+ * @param message new message is stored at this location
+ * @return
+ * - SUCCESS
+ * - OUT_OF_RES
+ */
+ status_t (*build_message) (protected_ike_sa_t *this, exchange_type_t type, bool request, message_t **message);
+
+ /**
+ * Creates a job to delete the given IKE_SA
+ */
+ status_t (*create_delete_job) (protected_ike_sa_t *this);
+
+ /**
+ * Resends the last sent reply
+ */
+ status_t (*resend_last_reply) (protected_ike_sa_t *this);
+
+
+ /* protected values */
+
+ /**
+ * Identifier for the current IKE_SA
+ */
+ ike_sa_id_t *ike_sa_id;
+
+ /**
+ * Linked List containing the child sa's of the current IKE_SA
+ */
+ linked_list_t *child_sas;
+
+ /**
+ * Current state of the IKE_SA
+ */
+ state_t *current_state;
+
+ /**
+ * this SA's source for random data
+ */
+ randomizer_t *randomizer;
+
+ /**
+ * contains the last responded message
+ *
+ */
+ message_t *last_responded_message;
+
+ /**
+ * contains the last requested message
+ *
+ */
+ message_t *last_requested_message;
+
+ /**
+ * Informations of this host
+ */
+ struct {
+ host_t *host;
+ } me;
+
+ /**
+ * Informations of the other host
+ */
+ struct {
+ host_t *host;
+ } other;
+
+
+// struct {
+// /**
+// * Diffie Hellman object used to compute shared secret
+// */
+// diffie_hellman_t *diffie_hellman;
+//
+// /**
+// * Diffie Hellman group number
+// */
+// u_int16_t dh_group_number;
+//
+// /**
+// * Priority used get matching dh_group number
+// */
+// u_int16_t dh_group_priority;
+//
+// /**
+// * selected proposals
+// */
+// linked_list_t *proposals;
+//
+// /**
+// * Sent nonce value
+// */
+// chunk_t sent_nonce;
+//
+// /**
+// * received nonce value
+// */
+// chunk_t received_nonce;
+// } ike_sa_init_data;
+
+
+ /**
+ * next message id to receive
+ */
+ u_int32_t message_id_in;
+
+ /**
+ * next message id to send
+ */
+ u_int32_t message_id_out;
+
+ /**
+ * a logger for this IKE_SA
+ */
+ logger_t *logger;
+};
+
+
+
+/**
* Creates an ike_sa_t object with a specific ike_sa_id_t object
*
* @param[in] ike_sa_id ike_sa_id_t object to associate with new IKE_SA.
*/
ike_auth_requested_t public;
+
+ /**
+ * Assigned IKE_SA
+ */
+ protected_ike_sa_t *ike_sa;
};
/**
/*
* Described in header.
*/
-ike_auth_requested_t *ike_auth_requested_create()
+ike_auth_requested_t *ike_auth_requested_create(protected_ike_sa_t *ike_sa)
{
private_ike_auth_requested_t *this = allocator_alloc_thing(private_ike_auth_requested_t);
this->public.state_interface.get_state = (ike_sa_state_t (*) (state_t *)) get_state;
this->public.state_interface.destroy = (status_t (*) (state_t *)) destroy;
+ /* private data */
+ this->ike_sa = ike_sa;
+
return &(this->public);
}
#define IKE_AUTH_REQUESTED_H_
#include "state.h"
+#include "../ike_sa.h"
/**
* @brief This class represents an IKE_SA, which has requested an IKE_AUTH.
/**
* Constructor of class ike_auth_requested_t
+ *
+ * @param ike_sa assigned ike_sa object
*/
-ike_auth_requested_t *ike_auth_requested_create();
+ike_auth_requested_t *ike_auth_requested_create(protected_ike_sa_t *ike_sa);
#endif /*IKE_AUTH_REQUESTED_H_*/
*/
ike_sa_established_t public;
+ /**
+ * Assigned IKE_SA
+ */
+ protected_ike_sa_t *ike_sa;
+
};
/**
/*
* Described in header.
*/
-ike_sa_established_t *ike_sa_established_create()
+ike_sa_established_t *ike_sa_established_create(protected_ike_sa_t *ike_sa)
{
private_ike_sa_established_t *this = allocator_alloc_thing(private_ike_sa_established_t);
this->public.state_interface.get_state = (ike_sa_state_t (*) (state_t *)) get_state;
this->public.state_interface.destroy = (status_t (*) (state_t *)) destroy;
+ /* private data */
+ this->ike_sa = ike_sa;
+
return &(this->public);
}
#define IKE_SA_ESTABLISHED_H_
#include "state.h"
+#include "../ike_sa.h"
/**
* @brief This class represents an the state of an established
/**
* Constructor of class ike_sa_established_t
+ *
+ * @param ike_sa assigned ike_sa
*/
-ike_sa_established_t *ike_sa_established_create();
+ike_sa_established_t *ike_sa_established_create(protected_ike_sa_t *ike_sa);
#endif /*IKE_SA_ESTABLISHED_H_*/
+/**
+ * @file ike_sa_init_requested.c
+ *
+ * @brief State of a IKE_SA after requesting an IKE_SA_INIT
+ *
+ */
+
+/*
+ * 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 "ike_sa_init_requested.h"
+
+#include "../utils/allocator.h"
+#include "../transforms/diffie_hellman.h"
+#include "../payloads/sa_payload.h"
+#include "../payloads/ke_payload.h"
+#include "../payloads/nonce_payload.h"
+
+/**
+ * Private data of a ike_sa_init_requested_t object.
+ *
+ */
+typedef struct private_ike_sa_init_requested_s private_ike_sa_init_requested_t;
+struct private_ike_sa_init_requested_s {
+ /**
+ * methods of the state_t interface
+ */
+ ike_sa_init_requested_t public;
+
+ /**
+ * Assigned IKE_SA
+ */
+ protected_ike_sa_t *ike_sa;
+
+ /**
+ * Diffie Hellman object used to compute shared secret
+ */
+ diffie_hellman_t *diffie_hellman;
+ /**
+ * Sent nonce value
+ */
+ chunk_t sent_nonce;
+
+ /**
+ * Received nonce
+ */
+ chunk_t received_nonce;
+
+ /**
+ * Logger used to log data
+ *
+ * Is logger of ike_sa!
+ */
+ logger_t *logger;
+};
+
+/**
+ * Implements state_t.get_state
+ */
+static status_t process_message(private_ike_sa_init_requested_t *this, message_t *message, state_t **new_state)
+{
+ status_t status;
+ linked_list_iterator_t *payloads;
+ message_t *response;
+
+
+ /* parse incoming message */
+ status = message->parse_body(message);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not parse body");
+ return status;
+ }
+ /* iterate over incoming payloads */
+ status = message->get_payload_iterator(message, &payloads);
+ if (status != SUCCESS)
+ {
+ return status;
+ }
+ while (payloads->has_next(payloads))
+ {
+ payload_t *payload;
+ payloads->current(payloads, (void**)&payload);
+
+ this->logger->log(this->logger, CONTROL|MORE, "Processing payload %s", mapping_find(payload_type_m, payload->get_type(payload)));
+ switch (payload->get_type(payload))
+ {
+// case SECURITY_ASSOCIATION:
+// {
+// sa_payload_t *sa_payload = (sa_payload_t*)payload;
+// linked_list_iterator_t *suggested_proposals, *accepted_proposals;
+// /* create a list for accepted proposals */
+// if (this->ike_sa_init_data.proposals == NULL) {
+// this->ike_sa_init_data.proposals = linked_list_create();
+// }
+// else
+// {
+// /** @todo destroy list contents */
+// }
+// if (this->ike_sa_init_data.proposals == NULL)
+// {
+// payloads->destroy(payloads);
+// return OUT_OF_RES;
+// }
+// status = this->ike_sa_init_data.proposals->create_iterator(this->ike_sa_init_data.proposals, &accepted_proposals, FALSE);
+// if (status != SUCCESS)
+// {
+// payloads->destroy(payloads);
+// return status;
+// }
+//
+// /* get the list of suggested proposals */
+// status = sa_payload->create_proposal_substructure_iterator(sa_payload, &suggested_proposals, TRUE);
+// if (status != SUCCESS)
+// {
+// accepted_proposals->destroy(accepted_proposals);
+// payloads->destroy(payloads);
+// return status;
+// }
+//
+// /* now let the configuration-manager select a subset of the proposals */
+// status = global_configuration_manager->select_proposals_for_host(global_configuration_manager,
+// this->other.host, suggested_proposals, accepted_proposals);
+// if (status != SUCCESS)
+// {
+// suggested_proposals->destroy(suggested_proposals);
+// accepted_proposals->destroy(accepted_proposals);
+// payloads->destroy(payloads);
+// return status;
+// }
+//
+// suggested_proposals->destroy(suggested_proposals);
+// accepted_proposals->destroy(accepted_proposals);
+//
+// /* ok, we have what we need for sa_payload */
+// break;
+// }
+ case KEY_EXCHANGE:
+ {
+ ke_payload_t *ke_payload = (ke_payload_t*)payload;
+ diffie_hellman_t *dh;
+ chunk_t shared_secret;
+
+ dh = this->diffie_hellman;
+
+
+ status = dh->set_other_public_value(dh, ke_payload->get_key_exchange_data(ke_payload));
+ if (status != SUCCESS)
+ {
+ dh->destroy(dh);
+ payloads->destroy(payloads);
+ return OUT_OF_RES;
+ }
+
+ status = dh->get_shared_secret(dh, &shared_secret);
+
+ this->logger->log_chunk(this->logger, RAW, "Shared secret", &shared_secret);
+
+ break;
+ }
+ case NONCE:
+ {
+ nonce_payload_t *nonce_payload = (nonce_payload_t*)payload;
+ chunk_t nonce;
+
+ nonce_payload->get_nonce(nonce_payload, &nonce);
+ /** @todo free if there is already one */
+ this->received_nonce.ptr = allocator_clone_bytes(nonce.ptr, nonce.len);
+ this->received_nonce.len = nonce.len;
+ if (this->received_nonce.ptr == NULL)
+ {
+ payloads->destroy(payloads);
+ return OUT_OF_RES;
+ }
+ break;
+ }
+ default:
+ {
+ /** @todo handle */
+ }
+
+ }
+
+ }
+ payloads->destroy(payloads);
+
+ /* set up the reply */
+ status = this->ike_sa->build_message(this->ike_sa, IKE_SA_INIT, FALSE, &response);
+ if (status != SUCCESS)
+ {
+ return status;
+ }
+
+ response->destroy(response);
+
+ return SUCCESS;
+}
+
+/**
+ * Implements state_t.get_state
+ */
+static ike_sa_state_t get_state(private_ike_sa_init_requested_t *this)
+{
+ return IKE_SA_INIT_REQUESTED;
+}
+
+/**
+ * Implements state_t.get_state
+ */
+static status_t destroy(private_ike_sa_init_requested_t *this)
+{
+ allocator_free(this);
+ return SUCCESS;
+}
+
+/*
+ * Described in header.
+ */
+ike_sa_init_requested_t *ike_sa_init_requested_create(protected_ike_sa_t *ike_sa, diffie_hellman_t *diffie_hellman, chunk_t sent_nonce)
+{
+ private_ike_sa_init_requested_t *this = allocator_alloc_thing(private_ike_sa_init_requested_t);
+
+ if (this == NULL)
+ {
+ return NULL;
+ }
+
+ /* interface functions */
+ this->public.state_interface.process_message = (status_t (*) (state_t *,message_t *,state_t **)) process_message;
+ this->public.state_interface.get_state = (ike_sa_state_t (*) (state_t *)) get_state;
+ this->public.state_interface.destroy = (status_t (*) (state_t *)) destroy;
+
+ /* private data */
+ this->ike_sa = ike_sa;
+ this->received_nonce.ptr = NULL;
+ this->received_nonce.len = 0;
+ this->logger = this->ike_sa->logger;
+ this->diffie_hellman = diffie_hellman;
+ this->sent_nonce = sent_nonce;
+
+ return &(this->public);
+}
+/**
+ * @file ike_sa_init_requested.h
+ *
+ * @brief State of a IKE_SA after requesting an IKE_SA_INIT
+ *
+ */
+
+/*
+ * 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.
+ */
+
+
#ifndef IKE_SA_INIT_REQUESTED_H_
#define IKE_SA_INIT_REQUESTED_H_
+#include "state.h"
+#include "../types.h"
+#include "../transforms/diffie_hellman.h"
+#include "../ike_sa.h"
+
+/**
+ * @brief This class represents an IKE_SA state when requested an IKE_SA_INIT
+ *
+ */
+typedef struct ike_sa_init_requested_s ike_sa_init_requested_t;
+
+struct ike_sa_init_requested_s {
+ /**
+ * methods of the state_t interface
+ */
+ state_t state_interface;
+
+};
+
+/**
+ * Constructor of class ike_sa_init_responded_t
+ *
+ * @param ike_sa assigned ike_sa
+ * @param diffie_hellman diffie_hellman object use to retrieve shared secret
+ * @param sent_nonce Sent nonce value
+ */
+ike_sa_init_requested_t *ike_sa_init_requested_create(protected_ike_sa_t *ike_sa, diffie_hellman_t *diffie_hellman, chunk_t sent_nonce);
+
#endif /*IKE_SA_INIT_REQUESTED_H_*/
+/**
+ * @file ike_sa_init_responded.c
+ *
+ * @brief State of a IKE_SA after responding to an IKE_SA_INIT request
+ *
+ */
+
+/*
+ * 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 "ike_sa_init_responded.h"
+
+#include "../utils/allocator.h"
+
+/**
+ * Private data of a ike_sa_init_responded_t object.
+ *
+ */
+typedef struct private_ike_sa_init_responded_s private_ike_sa_init_responded_t;
+struct private_ike_sa_init_responded_s {
+ /**
+ * methods of the state_t interface
+ */
+ ike_sa_init_responded_t public;
+
+ /**
+ * Assigned IKE_SA
+ */
+ protected_ike_sa_t *ike_sa;
+};
+
+/**
+ * Implements state_t.get_state
+ */
+static status_t process_message(private_ike_sa_init_responded_t *this, message_t *message, state_t **new_state)
+{
+ *new_state = (state_t *) this;
+ return SUCCESS;
+}
+
+/**
+ * Implements state_t.get_state
+ */
+static ike_sa_state_t get_state(private_ike_sa_init_responded_t *this)
+{
+ return IKE_SA_INIT_RESPONDED;
+}
+
+/**
+ * Implements state_t.get_state
+ */
+static status_t destroy(private_ike_sa_init_responded_t *this)
+{
+ allocator_free(this);
+ return SUCCESS;
+}
+
+/*
+ * Described in header.
+ */
+ike_sa_init_responded_t *ike_sa_init_responded_create(protected_ike_sa_t *ike_sa)
+{
+ private_ike_sa_init_responded_t *this = allocator_alloc_thing(private_ike_sa_init_responded_t);
+
+ if (this == NULL)
+ {
+ return NULL;
+ }
+
+ /* interface functions */
+ this->public.state_interface.process_message = (status_t (*) (state_t *,message_t *,state_t **)) process_message;
+ this->public.state_interface.get_state = (ike_sa_state_t (*) (state_t *)) get_state;
+ this->public.state_interface.destroy = (status_t (*) (state_t *)) destroy;
+
+ /* private data */
+ this->ike_sa = ike_sa;
+
+ return &(this->public);
+}
+/**
+ * @file ike_sa_init_responded.h
+ *
+ * @brief State of a IKE_SA after responding to an IKE_SA_INIT request
+ *
+ */
+
+/*
+ * 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.
+ */
+
#ifndef IKE_SA_INIT_RESPONDED_H_
#define IKE_SA_INIT_RESPONDED_H_
+#include "state.h"
+
+#include "../ike_sa.h"
+
+/**
+ * @brief This class represents an IKE_SA state when responded to an IKE_SA_INIT request
+ *
+ */
+typedef struct ike_sa_init_responded_s ike_sa_init_responded_t;
+
+struct ike_sa_init_responded_s {
+ /**
+ * methods of the state_t interface
+ */
+ state_t state_interface;
+
+};
+
+/**
+ * Constructor of class ike_sa_init_responded_t
+ *
+ * @param ike_sa assigned IKE_SA
+ */
+ike_sa_init_responded_t *ike_sa_init_responded_create(protected_ike_sa_t *ike_sa);
+
#endif /*IKE_SA_INIT_RESPONDED_H_*/
#include "initiator_init.h"
+
+#include "state.h"
+#include "ike_sa_init_requested.h"
+#include "../globals.h"
#include "../utils/allocator.h"
+#include "../transforms/diffie_hellman.h"
+#include "../payloads/sa_payload.h"
+#include "../payloads/ke_payload.h"
+#include "../payloads/nonce_payload.h"
+
/**
* Private data of a initiator_init_t object.
*/
initiator_init_t public;
+ /**
+ * Assigned IKE_SA
+ */
+ protected_ike_sa_t *ike_sa;
+
+ /**
+ * Diffie hellman object
+ */
+ diffie_hellman_t *diffie_hellman;
+
+ /**
+ * DH group number
+ */
+ u_int16_t dh_group_number;
+
+ /**
+ * DH group priority
+ */
+ u_int16_t dh_group_priority;
+
+ /**
+ * Sent nonce
+ */
+ chunk_t sent_nonce;
+
+ /**
+ * Proposals used to initiate connection
+ */
+ linked_list_t *proposals;
+
+ /**
+ * Logger used to log data
+ *
+ * Is logger of ike_sa!
+ */
+ logger_t *logger;
+
+ status_t (*build_sa_payload) (private_initiator_init_t *this, payload_t **payload);
+ status_t (*build_ke_payload) (private_initiator_init_t *this, payload_t **payload);
+ status_t (*build_nonce_payload) (private_initiator_init_t *this, payload_t **payload);
+
+ status_t (*destroy_after_state_change) (private_initiator_init_t *this);
};
static status_t initiate_connection (private_initiator_init_t *this, char *name, state_t **new_state)
{
+ message_t *message;
+ payload_t *payload;
+ packet_t *packet;
+ status_t status;
+ linked_list_iterator_t *proposal_iterator;
+ ike_sa_init_requested_t *next_state;
+
+
+ this->logger->log(this->logger, CONTROL, "Initializing connection %s",name);
+
+ status = global_configuration_manager->get_local_host(global_configuration_manager, name, &(this->ike_sa->me.host));
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR | MORE, "Could not retrieve local host configuration information for %s",name);
+ return INVALID_ARG;
+ }
+
+ status = global_configuration_manager->get_remote_host(global_configuration_manager, name, &(this->ike_sa->other.host));
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR | MORE, "Could not retrieve remote host configuration information for %s",name);
+ return INVALID_ARG;
+ }
+
+ status = global_configuration_manager->get_dh_group_number(global_configuration_manager, name, &(this->dh_group_number), this->dh_group_priority);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR | MORE, "Could not retrieve DH group number for %s",name);
+ return INVALID_ARG;
+ }
+
+ status = this->proposals->create_iterator(this->proposals, &proposal_iterator, FALSE);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: Could not create iterator on list for proposals");
+ return status;
+ }
+
+ status = global_configuration_manager->get_proposals_for_host(global_configuration_manager, this->ike_sa->other.host, proposal_iterator);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR | MORE, "Could not retrieve Proposals for %s",name);
+ return status;
+ }
+ /* not needed anymore */
+ proposal_iterator->destroy(proposal_iterator);
+
+ this ->logger->log(this->logger, CONTROL|MOST, "create diffie hellman object");
+ this->diffie_hellman = diffie_hellman_create(this->dh_group_number);
+
+ if (this->diffie_hellman == NULL)
+ {
+ this->logger->log(this->logger, ERROR, "Object of type diffie_hellman_t could not be created!");
+ return FAILED;
+ }
+
+
+ if (this->ike_sa->randomizer->allocate_pseudo_random_bytes(this->ike_sa->randomizer, NONCE_SIZE, &(this->sent_nonce)) != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not create nonce!");
+ return OUT_OF_RES;
+ }
+
+
+ /* going to build message */
+ status = this->ike_sa->build_message(this->ike_sa, IKE_SA_INIT, TRUE, &message);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not build message");
+ return status;
+ }
+
+ /* build SA payload */
+ status = this->build_sa_payload(this, &payload);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not build SA payload");
+ message->destroy(message);
+ return status;
+ }
+
+ this ->logger->log(this->logger, CONTROL|MOST, "add SA payload to message");
+ status = message->add_payload(message, payload);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not add SA payload to message");
+ message->destroy(message);
+ return status;
+ }
+
+
+ /* build KE payload */
+ status = this->build_ke_payload(this, &payload);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not build KE payload");
+ message->destroy(message);
+ return status;
+ }
+
+ this ->logger->log(this->logger, CONTROL|MOST, "add KE payload to message");
+ status = message->add_payload(message, payload);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not add KE payload to message");
+ message->destroy(message);
+ return status;
+ }
+
+ /* build Nonce payload */
+ status = this->build_nonce_payload(this, &payload);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not build NONCE payload");
+ message->destroy(message);
+ return status;
+ }
+
+ this ->logger->log(this->logger, CONTROL|MOST, "add nonce payload to message");
+ status = message->add_payload(message, payload);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not add nonce payload to message");
+ message->destroy(message);
+ return status;
+ }
+
+ /* generate packet */
+ this ->logger->log(this->logger, CONTROL|MOST, "generate packet from message");
+ status = message->generate(message, &packet);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: could not generate packet from message");
+ message->destroy(message);
+ return status;
+ }
+
+ this ->logger->log(this->logger, CONTROL|MOST, "Add packet to global send queue");
+ status = global_send_queue->add(global_send_queue, packet);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not add packet to send queue");
+ message->destroy(message);
+ return status;
+ }
+
+ if ( this->ike_sa->last_requested_message != NULL)
+ {
+ /* destroy message */
+ this ->logger->log(this->logger, CONTROL|MOST, "Destroy stored last requested message");
+ this->ike_sa->last_requested_message->destroy(this->ike_sa->last_requested_message);
+ }
+
+ this->ike_sa->last_requested_message = message;
+
+ /* message counter can now be increased */
+ this->ike_sa->message_id_out++;
+
+
+ /* state can now be changed */
+ next_state = ike_sa_init_requested_create(this->ike_sa,this->diffie_hellman,this->sent_nonce);
+
+ if (next_state == NULL)
+ {
+ this ->logger->log(this->logger, ERROR, "Fatal error: could not create next state object of type ike_sa_init_requested_t");
+ return FAILED;
+ }
+
+ /* state has NOW changed :-) */
+ this ->logger->log(this->logger, CONTROL|MORE, "Change state of IKE_SA from %s to %s",mapping_find(ike_sa_state_m,INITIATOR_INIT),mapping_find(ike_sa_state_m,IKE_SA_INIT_REQUESTED) );
+
+ this->destroy_after_state_change(this);
+
+ *new_state = (state_t *) next_state;
+
+ return SUCCESS;
+}
+
+/**
+ * implements private_initiator_init_t.build_sa_payload
+ */
+static status_t build_sa_payload(private_initiator_init_t *this, payload_t **payload)
+{
+ sa_payload_t* sa_payload;
+ linked_list_iterator_t *proposal_iterator;
+ status_t status;
+
+
+ /* 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");
+
+ status = this->proposals->create_iterator(this->proposals, &proposal_iterator, FALSE);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: Could not create iterator on list for proposals");
+ return status;
+ }
+
+ sa_payload = sa_payload_create();
+ if (sa_payload == NULL)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: Could not create SA payload object");
+ return OUT_OF_RES;
+ }
+
+ while (proposal_iterator->has_next(proposal_iterator))
+ {
+ proposal_substructure_t *current_proposal;
+ proposal_substructure_t *current_proposal_clone;
+ status = proposal_iterator->current(proposal_iterator,(void **) ¤t_proposal);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not get current proposal needed to copy");
+ sa_payload->destroy(sa_payload);
+ return status;
+ }
+ status = current_proposal->clone(current_proposal,¤t_proposal_clone);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not clone current proposal");
+ sa_payload->destroy(sa_payload);
+ return status;
+ }
+
+ status = sa_payload->add_proposal_substructure(sa_payload,current_proposal_clone);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not add cloned proposal to SA payload");
+ sa_payload->destroy(sa_payload);
+ return status;
+ }
+
+ }
+
+ this->logger->log(this->logger, CONTROL|MORE, "sa payload builded");
+
+ *payload = (payload_t *) sa_payload;
+
+ return SUCCESS;
+}
+
+/**
+ * implements private_initiator_init_t.build_ke_payload
+ */
+static status_t build_ke_payload(private_initiator_init_t *this, payload_t **payload)
+{
+ ke_payload_t *ke_payload;
+ chunk_t key_data;
+ status_t status;
+
+ this->logger->log(this->logger, CONTROL|MORE, "building ke payload");
+
+
+ this ->logger->log(this->logger, CONTROL|MORE, "get public dh value to send in ke payload");
+ status = this->diffie_hellman->get_my_public_value(this->diffie_hellman,&key_data);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not get my DH public value");
+ return status;
+ }
+
+ ke_payload = ke_payload_create();
+ if (ke_payload == NULL)
+ {
+ this->logger->log(this->logger, ERROR, "Could not create KE payload");
+ allocator_free_chunk(key_data);
+ return OUT_OF_RES;
+ }
+ ke_payload->set_dh_group_number(ke_payload, MODP_1024_BIT);
+ if (ke_payload->set_key_exchange_data(ke_payload, key_data) != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not set key exchange data of KE payload");
+ ke_payload->destroy(ke_payload);
+ allocator_free_chunk(key_data);
+ return OUT_OF_RES;
+ }
+ allocator_free_chunk(key_data);
+
+ *payload = (payload_t *) ke_payload;
+ return SUCCESS;
+}
+
+/**
+ * implements private_initiator_init_t.build_nonce_payload
+ */
+static status_t build_nonce_payload(private_initiator_init_t *this, payload_t **payload)
+{
+ nonce_payload_t *nonce_payload;
+ status_t status;
+
+ this->logger->log(this->logger, CONTROL|MORE, "building nonce payload");
+
+ nonce_payload = nonce_payload_create();
+ if (nonce_payload == NULL)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: could not create nonce payload object");
+ return OUT_OF_RES;
+ }
+
+ status = nonce_payload->set_nonce(nonce_payload, this->sent_nonce);
+
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: could not set nonce data of payload");
+ nonce_payload->destroy(nonce_payload);
+ return status;
+ }
+
+ *payload = (payload_t *) nonce_payload;
+
return SUCCESS;
}
*/
static status_t destroy(private_initiator_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 **)¤t_proposal);
+ current_proposal->destroy(current_proposal);
+ }
+ this->proposals->destroy(this->proposals);
+
+ /* destroy diffie hellman object */
+ if (this->diffie_hellman != NULL)
+ {
+ this->logger->log(this->logger, CONTROL | MOST, "Destroy diffie_hellman_t object");
+ this->diffie_hellman->destroy(this->diffie_hellman);
+ }
+
+ allocator_free(this);
+ return SUCCESS;
+}
+
+/**
+ * Implements private_initiator_init_t.destroy_after_state_change
+ */
+static status_t destroy_after_state_change (private_initiator_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 **)¤t_proposal);
+ current_proposal->destroy(current_proposal);
+ }
+ this->proposals->destroy(this->proposals);
allocator_free(this);
return SUCCESS;
}
/*
* Described in header.
*/
-initiator_init_t *initiator_init_create()
+initiator_init_t *initiator_init_create(protected_ike_sa_t *ike_sa)
{
private_initiator_init_t *this = allocator_alloc_thing(private_initiator_init_t);
/* public functions */
this->public.initiate_connection = (status_t (*)(initiator_init_t *, char *, state_t **)) initiate_connection;
+ /* private functions */
+ this->build_sa_payload = build_sa_payload;
+ this->build_ke_payload = build_ke_payload;
+ this->build_nonce_payload = build_nonce_payload;
+ this->destroy_after_state_change = destroy_after_state_change;
+
+ /* private data */
+ this->ike_sa = ike_sa;
+ this->logger = this->ike_sa->logger;
+ this->dh_group_priority = 1;
+ this->proposals = linked_list_create();
+ this->sent_nonce.ptr = NULL;
+ this->sent_nonce.len = 0;
+ if (this->proposals == NULL)
+ {
+ allocator_free(this);
+ return NULL;
+ }
+
return &(this->public);
}
#include "state.h"
+#include "../ike_sa.h"
+
/**
* @brief This class represents an IKE_SA state when initializing
* a connection as initiator
/**
* Constructor of class initiator_init_t
+ *
+ * @param ike_sa assigned IKE_SA
*/
-initiator_init_t *initiator_init_create();
+initiator_init_t *initiator_init_create(protected_ike_sa_t *ike_sa);
#endif /*INITIATOR_INIT_H_*/
#include "responder_init.h"
+#include "../globals.h"
#include "../utils/allocator.h"
+#include "../payloads/sa_payload.h"
+#include "../payloads/ke_payload.h"
+#include "../payloads/nonce_payload.h"
+#include "../transforms/diffie_hellman.h"
/**
* Private data of a responder_init_t object.
*/
responder_init_t public;
+ /**
+ * Assigned IKE_SA
+ */
+ protected_ike_sa_t *ike_sa;
+
+ /**
+ * Diffie Hellman object used to compute shared secret
+ */
+ diffie_hellman_t *diffie_hellman;
+
+ /**
+ * Diffie Hellman group number
+ */
+ u_int16_t dh_group_number;
+
+ /**
+ * Priority used get matching dh_group number
+ */
+ u_int16_t dh_group_priority;
+
+ /**
+ * Sent nonce value
+ */
+ chunk_t sent_nonce;
+
+ /**
+ * Received nonce value
+ */
+ chunk_t received_nonce;
+
+ /**
+ * Logger used to log data
+ *
+ * Is logger of ike_sa!
+ */
+ logger_t *logger;
+
+ /**
+ * Proposals used to initiate connection
+ */
+ linked_list_t *proposals;
+
+ status_t (*build_sa_payload) (private_responder_init_t *this, payload_t **payload);
+ status_t (*build_ke_payload) (private_responder_init_t *this, payload_t **payload);
+ status_t (*build_nonce_payload) (private_responder_init_t *this, payload_t **payload);
};
/**
*/
static status_t process_message(private_responder_init_t *this, message_t *message, state_t **new_state)
{
- *new_state = (state_t *) this;
+ linked_list_iterator_t *payloads;
+ host_t *source, *destination;
+ status_t status;
+ message_t *response;
+ payload_t *payload;
+ packet_t *packet;
+
+ /* this is the first message we process, so copy host infos */
+ message->get_source(message, &source);
+ message->get_destination(message, &destination);
+
+ /* we need to clone them, since we destroy the message later */
+ destination->clone(destination, &(this->ike_sa->me.host));
+ source->clone(source, &(this->ike_sa->other.host));
+
+ /* parse incoming message */
+ status = message->parse_body(message);
+ if (status != SUCCESS)
+ {
+ 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! */
+ status = message->get_payload_iterator(message, &payloads);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: Could not get payload interator");
+ return status;
+ }
+
+ while (payloads->has_next(payloads))
+ {
+ payload_t *payload;
+
+ /* get current payload */
+ payloads->current(payloads, (void**)&payload);
+
+ this->logger->log(this->logger, CONTROL|MORE, "Processing payload of type %s", mapping_find(payload_type_m, payload->get_type(payload)));
+ switch (payload->get_type(payload))
+ {
+ case SECURITY_ASSOCIATION:
+ {
+ sa_payload_t *sa_payload = (sa_payload_t*)payload;
+ linked_list_iterator_t *suggested_proposals, *accepted_proposals;
+
+ status = this->proposals->create_iterator(this->proposals, &accepted_proposals, FALSE);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: Could not create iterator on list for proposals");
+ payloads->destroy(payloads);
+ return status;
+ }
+
+ /* get the list of suggested proposals */
+ status = sa_payload->create_proposal_substructure_iterator(sa_payload, &suggested_proposals, TRUE);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: Could not create iterator on suggested proposals");
+ accepted_proposals->destroy(accepted_proposals);
+ payloads->destroy(payloads);
+ return status;
+ }
+
+ /* 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->other.host, suggested_proposals, accepted_proposals);
+ 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);
+ payloads->destroy(payloads);
+ return status;
+ }
+
+ /* iterators are not needed anymore */
+ suggested_proposals->destroy(suggested_proposals);
+ accepted_proposals->destroy(accepted_proposals);
+
+ this->logger->log(this->logger, CONTROL | MORE, "SA Payload processed");
+ /* ok, we have what we need for sa_payload (proposals are stored in this->proposals)*/
+ break;
+ }
+ case KEY_EXCHANGE:
+ {
+ ke_payload_t *ke_payload = (ke_payload_t*)payload;
+ diffie_hellman_group_t group;
+ diffie_hellman_t *dh;
+ bool allowed_group;
+
+ 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->other.host, group, &allowed_group);
+
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR | MORE, "Could not get informations about DH group");
+ payloads->destroy(payloads);
+ return status;
+ }
+ if (!allowed_group)
+ {
+ /** @todo Send info reply */
+ }
+
+ /* create diffie hellman object to handle DH exchange */
+ dh = diffie_hellman_create(group);
+ if (dh == NULL)
+ {
+ this->logger->log(this->logger, ERROR, "Could not generate DH object");
+ payloads->destroy(payloads);
+ return OUT_OF_RES;
+ }
+
+ this->logger->log(this->logger, CONTROL | MORE, "Set other DH public value");
+
+ status = dh->set_other_public_value(dh, ke_payload->get_key_exchange_data(ke_payload));
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not set other DH public value");
+ dh->destroy(dh);
+ payloads->destroy(payloads);
+ return OUT_OF_RES;
+ }
+
+ this->diffie_hellman = dh;
+
+ this->logger->log(this->logger, CONTROL | MORE, "KE Payload processed");
+ break;
+ }
+ case NONCE:
+ {
+ nonce_payload_t *nonce_payload = (nonce_payload_t*)payload;
+ chunk_t nonce;
+
+ this->logger->log(this->logger, CONTROL | MORE, "Get nonce value and store it");
+ nonce_payload->get_nonce(nonce_payload, &nonce);
+ /** @todo free if there is already one */
+ this->received_nonce.ptr = allocator_clone_bytes(nonce.ptr, nonce.len);
+ this->received_nonce.len = nonce.len;
+ if (this->received_nonce.ptr == NULL)
+ {
+ payloads->destroy(payloads);
+ return OUT_OF_RES;
+ }
+
+ this->logger->log(this->logger, CONTROL | MORE, "Nonce Payload processed");
+ break;
+ }
+ default:
+ {
+ this->logger->log(this->logger, ERROR | MORE, "Payload type not supported!");
+ payloads->destroy(payloads);
+ return OUT_OF_RES;
+ }
+
+ }
+
+ }
+ /* iterator can be destroyed */
+ payloads->destroy(payloads);
+
+ this->logger->log(this->logger, CONTROL | MORE, "Request successfully handled. Going to create reply.");
+
+ this->logger->log(this->logger, CONTROL | MOST, "Going to create nonce.");
+ if (this->ike_sa->randomizer->allocate_pseudo_random_bytes(this->ike_sa->randomizer, NONCE_SIZE, &(this->sent_nonce)) != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not create nonce!");
+ return OUT_OF_RES;
+ }
+
+
+ /* set up the reply */
+ status = this->ike_sa->build_message(this->ike_sa, IKE_SA_INIT, FALSE, &response);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not create empty message");
+ return status;
+ }
+
+ /* build SA payload */
+ status = this->build_sa_payload(this, &payload);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not build SA payload");
+ return status;
+ }
+
+ this ->logger->log(this->logger, CONTROL|MOST, "add SA payload to message");
+ status = response->add_payload(response, payload);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not add SA payload to message");
+ return status;
+ }
+
+ /* build KE payload */
+ status = this->build_ke_payload(this,&payload);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not build KE payload");
+ return status;
+ }
+
+ this ->logger->log(this->logger, CONTROL|MOST, "add KE payload to message");
+ status = response->add_payload(response, payload);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not add KE payload to message");
+ return status;
+ }
+
+ /* build Nonce payload */
+ status = this->build_nonce_payload(this, &payload);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not build NONCE payload");
+ return status;
+ }
+
+ this ->logger->log(this->logger, CONTROL|MOST, "add nonce payload to message");
+ status = response->add_payload(response, payload);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not add nonce payload to message");
+ return status;
+ }
+
+ /* generate packet */
+ this ->logger->log(this->logger, CONTROL|MOST, "generate packet from message");
+ status = response->generate(response, &packet);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: could not generate packet from message");
+ return status;
+ }
+
+ this ->logger->log(this->logger, CONTROL|MOST, "Add packet to global send queue");
+ status = global_send_queue->add(global_send_queue, packet);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not add packet to send queue");
+ return status;
+ }
+
+ if ( this->ike_sa->last_responded_message != NULL)
+ {
+ /* destroy message */
+ this ->logger->log(this->logger, CONTROL|MOST, "Destroy stored last responded message");
+ this->ike_sa->last_responded_message->destroy(this->ike_sa->last_responded_message);
+ }
+
+ this->ike_sa->last_responded_message = response;
+
+ /* state has NOW changed :-) */
+// this ->logger->log(this->logger, CONTROL|MORE, "Change state of IKE_SA from %s to %s",mapping_find(ike_sa_state_m,this->state),mapping_find(ike_sa_state_m,IKE_SA_INIT_REQUESTED) );
+
+
+ return SUCCESS;
+}
+
+/**
+ * implements private_initiator_init_t.build_sa_payload
+ */
+static status_t build_sa_payload(private_responder_init_t *this, payload_t **payload)
+{
+ sa_payload_t* sa_payload;
+ linked_list_iterator_t *proposal_iterator;
+ status_t status;
+
+
+ /* 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");
+
+ status = this->proposals->create_iterator(this->proposals, &proposal_iterator, FALSE);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: Could not create iterator on list for proposals");
+ return status;
+ }
+
+ sa_payload = sa_payload_create();
+ if (sa_payload == NULL)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: Could not create SA payload object");
+ return OUT_OF_RES;
+ }
+
+ while (proposal_iterator->has_next(proposal_iterator))
+ {
+ proposal_substructure_t *current_proposal;
+ proposal_substructure_t *current_proposal_clone;
+ status = proposal_iterator->current(proposal_iterator,(void **) ¤t_proposal);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not get current proposal needed to copy");
+ sa_payload->destroy(sa_payload);
+ return status;
+ }
+ status = current_proposal->clone(current_proposal,¤t_proposal_clone);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not clone current proposal");
+ sa_payload->destroy(sa_payload);
+ return status;
+ }
+
+ status = sa_payload->add_proposal_substructure(sa_payload,current_proposal_clone);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not add cloned proposal to SA payload");
+ sa_payload->destroy(sa_payload);
+ return status;
+ }
+
+ }
+
+ this->logger->log(this->logger, CONTROL|MORE, "sa payload builded");
+
+ *payload = (payload_t *) sa_payload;
+
+ return SUCCESS;
+}
+
+/**
+ * implements private_initiator_init_t.build_ke_payload
+ */
+static status_t build_ke_payload(private_responder_init_t *this, payload_t **payload)
+{
+ ke_payload_t *ke_payload;
+ chunk_t key_data;
+ status_t status;
+
+ this->logger->log(this->logger, CONTROL|MORE, "building ke payload");
+
+
+ this ->logger->log(this->logger, CONTROL|MORE, "get public dh value to send in ke payload");
+ status = this->diffie_hellman->get_my_public_value(this->diffie_hellman,&key_data);
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not get my DH public value");
+ return status;
+ }
+
+ ke_payload = ke_payload_create();
+ if (ke_payload == NULL)
+ {
+ this->logger->log(this->logger, ERROR, "Could not create KE payload");
+ allocator_free_chunk(key_data);
+ return OUT_OF_RES;
+ }
+ ke_payload->set_dh_group_number(ke_payload, MODP_1024_BIT);
+ if (ke_payload->set_key_exchange_data(ke_payload, key_data) != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Could not set key exchange data of KE payload");
+ ke_payload->destroy(ke_payload);
+ allocator_free_chunk(key_data);
+ return OUT_OF_RES;
+ }
+ allocator_free_chunk(key_data);
+
+ *payload = (payload_t *) ke_payload;
+ return SUCCESS;
+}
+
+/**
+ * implements private_initiator_init_t.build_nonce_payload
+ */
+static status_t build_nonce_payload(private_responder_init_t *this, payload_t **payload)
+{
+ nonce_payload_t *nonce_payload;
+ status_t status;
+
+ this->logger->log(this->logger, CONTROL|MORE, "building nonce payload");
+
+ nonce_payload = nonce_payload_create();
+ if (nonce_payload == NULL)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: could not create nonce payload object");
+ return OUT_OF_RES;
+ }
+
+ status = nonce_payload->set_nonce(nonce_payload, this->sent_nonce);
+
+ if (status != SUCCESS)
+ {
+ this->logger->log(this->logger, ERROR, "Fatal error: could not set nonce data of payload");
+ nonce_payload->destroy(nonce_payload);
+ return status;
+ }
+
+ *payload = (payload_t *) nonce_payload;
+
return SUCCESS;
}
+
/**
* Implements state_t.get_state
*/
static ike_sa_state_t get_state(private_responder_init_t *this)
{
- return INITIATOR_INIT;
+ return RESPONDER_INIT;
}
/**
*/
static status_t 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 **)¤t_proposal);
+ current_proposal->destroy(current_proposal);
+ }
+ this->proposals->destroy(this->proposals);
allocator_free(this);
return SUCCESS;
}
/*
* Described in header.
*/
-responder_init_t *responder_init_create()
+responder_init_t *responder_init_create(protected_ike_sa_t *ike_sa)
{
private_responder_init_t *this = allocator_alloc_thing(private_responder_init_t);
this->public.state_interface.get_state = (ike_sa_state_t (*) (state_t *)) get_state;
this->public.state_interface.destroy = (status_t (*) (state_t *)) destroy;
+ /* private functions */
+ this->build_sa_payload = build_sa_payload;
+ this->build_ke_payload = build_ke_payload;
+ this->build_nonce_payload = build_nonce_payload;
+
+ /* private data */
+ this->ike_sa = ike_sa;
+ this->logger = this->ike_sa->logger;
+ this->sent_nonce.ptr = NULL;
+ this->sent_nonce.len = 0;
+ this->received_nonce.ptr = NULL;
+ this->received_nonce.len = 0;
+ this->proposals = linked_list_create();
+ if (this->proposals == NULL)
+ {
+ allocator_free(this);
+ return NULL;
+ }
+
return &(this->public);
}
#include "state.h"
+#include "../ike_sa.h"
+
/**
* @brief This class represents an IKE_SA state when initializing
* a connection as responder
/**
* Constructor of class responder_init_t
+ *
+ * @param ike_sa assigned IKE_SA
*/
-responder_init_t *responder_init_create();
+responder_init_t *responder_init_create(protected_ike_sa_t *ike_sa);
#endif /*RESPONDER_INIT_H_*/
#include "../types.h"
#include "../message.h"
+extern mapping_t ike_sa_state_m[];
+
/**
* States in which a IKE_SA can actually be
*/
{
case INCOMING_PACKET:
{
- packet_t *packet;
- message_t *message;
- ike_sa_t *ike_sa;
+ packet_t *packet;
+ message_t *message;
+ ike_sa_t *ike_sa;
ike_sa_id_t *ike_sa_id;
- status_t status;
+ status_t status;
incoming_packet_job_t *incoming_packet_job = (incoming_packet_job_t *)job;
mapping_find(job_type_m,job_type));
break;
}
+
message = message_create_from_packet(packet);
if (message == NULL)
{
ike_sa_id->get_initiator_spi(ike_sa_id),
ike_sa_id->get_responder_spi(ike_sa_id),
ike_sa_id->is_initiator(ike_sa_id) ? "initiator" : "responder");
+ ike_sa_id->destroy(ike_sa_id);
status = global_ike_sa_manager->checkin(global_ike_sa_manager, ike_sa);
if (status != SUCCESS)
this->worker_logger->log(this->worker_logger, ERROR, "checkin of IKE SA failed");
}
message->destroy(message);
- ike_sa_id->destroy(ike_sa_id);
-
break;
}
case INITIATE_IKE_SA:
projects / strongswan.git / commitdiff