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- proposal setup implementation begun

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This commit is contained in:
Martin Willi
2006-02-22 16:14:40 +00:00
parent 0a373aec33
commit a527a426d6
18 changed files with 739 additions and 427 deletions
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Source/charon/sa/states/ike_sa_init_responded.c
+99 -63
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@@ -78,6 +78,21 @@ struct private_ike_sa_init_responded_t {
*/
sa_config_t *sa_config;
/**
* Proposal selected for CHILD_SA
*/
proposal_t *proposal;
/**
* Traffic selectors applicable at our site
*/
linked_list_t *my_ts;
/**
* Traffic selectors applicable at remote site
*/
linked_list_t *other_ts;
/**
* Assigned logger.
*
@@ -157,8 +172,11 @@ static status_t process_message(private_ike_sa_init_responded_t *this, message_t
signer_t *signer;
status_t status;
host_t *my_host, *other_host;
chunk_t seed;
prf_plus_t *prf_plus;
child_sa_t *child_sa;
if (request->get_exchange_type(request) != IKE_AUTH)
{
this->logger->log(this->logger, ERROR | LEVEL1, "Message of type %s not supported in state ike_sa_init_responded",
@@ -313,7 +331,44 @@ static status_t process_message(private_ike_sa_init_responded_t *this, message_t
return DELETE_ME;
}
/* create new state */my_host = this->ike_sa->get_my_host(this->ike_sa);
/* install child SAs for AH and esp */
if (!this->proposal)
{
this->logger->log(this->logger, CONTROL, "Proposal negotiation failed, no CHILD_SA built");
}
else if (this->my_ts->get_count(this->my_ts) == 0 || this->other_ts->get_count(this->other_ts) == 0)
{
this->logger->log(this->logger, CONTROL, "Traffic selector negotiation failed, no CHILD_SA built");
}
else
{
seed = allocator_alloc_as_chunk(this->received_nonce.len + this->sent_nonce.len);
memcpy(seed.ptr, this->received_nonce.ptr, this->received_nonce.len);
memcpy(seed.ptr + this->received_nonce.len, this->sent_nonce.ptr, this->sent_nonce.len);
prf_plus = prf_plus_create(this->ike_sa->get_child_prf(this->ike_sa), seed);
allocator_free_chunk(&seed);
child_sa = child_sa_create(this->ike_sa->get_my_host(this->ike_sa),
this->ike_sa->get_other_host(this->ike_sa));
status = child_sa->add(child_sa, this->proposal, prf_plus);
prf_plus->destroy(prf_plus);
if (status != SUCCESS)
{
this->logger->log(this->logger, AUDIT, "Could not install CHILD_SA! Deleting IKE_SA");
return DELETE_ME;
}
status = child_sa->add_policy(child_sa, this->my_ts, this->other_ts);
if (status != SUCCESS)
{
this->logger->log(this->logger, AUDIT, "Could not install CHILD_SA policy! Deleting IKE_SA");
return DELETE_ME;
}
this->ike_sa->add_child_sa(this->ike_sa, child_sa);
}
/* create new state */
my_host = this->ike_sa->get_my_host(this->ike_sa);
other_host = this->ike_sa->get_other_host(this->ike_sa);
this->logger->log(this->logger, AUDIT, "IKE_SA established between %s - %s, authenticated peer with %s",
my_host->get_address(my_host), other_host->get_address(other_host),
@@ -390,11 +445,6 @@ static status_t build_sa_payload(private_ike_sa_init_responded_t *this, sa_paylo
proposal_t *proposal, *proposal_tmp;
linked_list_t *proposal_list;
sa_payload_t *sa_response;
child_sa_t *child_sa;
prf_plus_t *prf_plus;
chunk_t seed;
/* TODO: child sa stuff */
/* get proposals from request */
proposal_list = request->get_proposals(request);
@@ -425,30 +475,12 @@ static status_t build_sa_payload(private_ike_sa_init_responded_t *this, sa_paylo
return DELETE_ME;
}
/* install child SAs for AH and esp */
seed = allocator_alloc_as_chunk(this->received_nonce.len + this->sent_nonce.len);
memcpy(seed.ptr, this->received_nonce.ptr, this->received_nonce.len);
memcpy(seed.ptr + this->received_nonce.len, this->sent_nonce.ptr, this->sent_nonce.len);
prf_plus = prf_plus_create(this->ike_sa->get_child_prf(this->ike_sa), seed);
allocator_free_chunk(&seed);
child_sa = child_sa_create(this->ike_sa->get_my_host(this->ike_sa),
this->ike_sa->get_other_host(this->ike_sa));
if (child_sa->add(child_sa, proposal, prf_plus) != SUCCESS)
{
this->logger->log(this->logger, AUDIT, "Could not install CHILD_SA! Deleting IKE_SA");
prf_plus->destroy(prf_plus);
proposal->destroy(proposal);
return DELETE_ME;
}
this->ike_sa->add_child_sa(this->ike_sa, child_sa);
/* apply proposal */
this->proposal = proposal;
/* create payload with selected propsal */
sa_response = sa_payload_create_from_proposal(proposal);
response->add_payload(response, (payload_t*)sa_response);
prf_plus->destroy(prf_plus);
proposal->destroy(proposal);
return SUCCESS;
}
@@ -462,8 +494,6 @@ static status_t build_auth_payload(private_ike_sa_init_responded_t *this, auth_p
status_t status;
authenticator = authenticator_create(this->ike_sa);
status = authenticator->verify_auth_data(authenticator,auth_request, this->ike_sa_init_request_data,this->sent_nonce,other_id_payload,TRUE);
if (status != SUCCESS)
@@ -474,7 +504,6 @@ static status_t build_auth_payload(private_ike_sa_init_responded_t *this, auth_p
return DELETE_ME;
}
status = authenticator->compute_auth_data(authenticator,&auth_reply, this->ike_sa_init_response_data,this->received_nonce,my_id_payload,FALSE);
authenticator->destroy(authenticator);
if (status != SUCCESS)
@@ -483,7 +512,7 @@ static status_t build_auth_payload(private_ike_sa_init_responded_t *this, auth_p
return DELETE_ME;
}
response->add_payload(response, (payload_t *)auth_reply);
return SUCCESS;
}
@@ -493,47 +522,35 @@ static status_t build_auth_payload(private_ike_sa_init_responded_t *this, auth_p
*/
static status_t build_ts_payload(private_ike_sa_init_responded_t *this, bool ts_initiator, ts_payload_t *request, message_t* response)
{
traffic_selector_t **ts_received, **ts_selected;
size_t ts_received_count, ts_selected_count;
linked_list_t *ts_received, *ts_selected;
traffic_selector_t *ts;
status_t status = SUCCESS;
ts_payload_t *ts_response;
/* build a reply payload with selected traffic selectors */
ts_received_count = request->get_traffic_selectors(request, &ts_received);
ts_received = request->get_traffic_selectors(request);
/* select ts depending on payload type */
if (ts_initiator)
{
ts_selected_count = this->sa_config->select_traffic_selectors_initiator(this->sa_config, ts_received, ts_received_count, &ts_selected);
ts_selected = this->sa_config->select_other_traffic_selectors(this->sa_config, ts_received);
this->other_ts = ts_selected;
}
else
{
ts_selected_count = this->sa_config->select_traffic_selectors_responder(this->sa_config, ts_received, ts_received_count, &ts_selected);
}
if(ts_selected_count == 0)
{
this->logger->log(this->logger, AUDIT, "IKE_AUH request did not contain any traffic selectors.");
ts_response = ts_payload_create(ts_initiator);
response->add_payload(response, (payload_t*)ts_response);
}
else
{
ts_response = ts_payload_create_from_traffic_selectors(ts_initiator, ts_selected, ts_selected_count);
response->add_payload(response, (payload_t*)ts_response);
ts_selected = this->sa_config->select_my_traffic_selectors(this->sa_config, ts_received);
this->my_ts = ts_selected;
}
ts_response = ts_payload_create_from_traffic_selectors(ts_initiator, ts_selected);
response->add_payload(response, (payload_t*)ts_response);
/* cleanup */
while(ts_received_count--)
while (ts_received->remove_last(ts_received, (void**)&ts) == SUCCESS)
{
traffic_selector_t *ts = *ts_received + ts_received_count;
ts->destroy(ts);
}
allocator_free(ts_received);
while(ts_selected_count--)
{
traffic_selector_t *ts = *ts_selected + ts_selected_count;
ts->destroy(ts);
}
allocator_free(ts_selected);
ts_received->destroy(ts_received);
return status;
}
@@ -577,16 +594,32 @@ static ike_sa_state_t get_state(private_ike_sa_init_responded_t *this)
*/
static void destroy(private_ike_sa_init_responded_t *this)
{
this->logger->log(this->logger, CONTROL | LEVEL3, "Going to destroy ike_sa_init_responded_t state object");
this->logger->log(this->logger, CONTROL | LEVEL3, "Destroy received nonce");
allocator_free_chunk(&(this->received_nonce));
this->logger->log(this->logger, CONTROL | LEVEL3, "Destroy sent nonce");
allocator_free_chunk(&(this->sent_nonce));
this->logger->log(this->logger, CONTROL | LEVEL3, "Destroy IKE_SA_INIT response octets");
allocator_free_chunk(&(this->ike_sa_init_response_data));
this->logger->log(this->logger, CONTROL | LEVEL3, "Destroy IKE_SA_INIT request octets");
allocator_free_chunk(&(this->ike_sa_init_request_data));
if (this->my_ts)
{
traffic_selector_t *ts;
while (this->my_ts->remove_last(this->my_ts, (void**)&ts) == SUCCESS)
{
ts->destroy(ts);
}
this->my_ts->destroy(this->my_ts);
}
if (this->other_ts)
{
traffic_selector_t *ts;
while (this->other_ts->remove_last(this->other_ts, (void**)&ts) == SUCCESS)
{
ts->destroy(ts);
}
this->other_ts->destroy(this->other_ts);
}
if (this->proposal)
{
this->proposal->destroy(this->proposal);
}
allocator_free(this);
}
@@ -616,6 +649,9 @@ ike_sa_init_responded_t *ike_sa_init_responded_create(protected_ike_sa_t *ike_sa
this->sent_nonce = sent_nonce;
this->ike_sa_init_response_data = ike_sa_init_response_data;
this->ike_sa_init_request_data = ike_sa_init_request_data;
this->my_ts = NULL;
this->other_ts = NULL;
this->proposal = NULL;
this->logger = this->ike_sa->get_logger(this->ike_sa);
return &(this->public);