store IKE proposal implicitly during derive_keys

src/charon/plugins/stroke/stroke_list.c

@@ -79,7 +79,7 @@ static void log_ike_sa(FILE *out, ike_sa_t *ike_sa, bool all)
 	
 	if (all)
 	{
-		char *ike_proposal = ike_sa->get_proposal(ike_sa);
+		proposal_t *ike_proposal = ike_sa->get_proposal(ike_sa);
 
 		fprintf(out, "%12s[%d]: IKE SPIs: %.16llx_i%s %.16llx_r%s",
 				ike_sa->get_name(ike_sa), ike_sa->get_unique_id(ike_sa),
@@ -115,9 +115,12 @@ static void log_ike_sa(FILE *out, ike_sa_t *ike_sa, bool all)
 
 		if (ike_proposal)
 		{
+			char buf[BUF_LEN];
+			
+			snprintf(buf, BUF_LEN, "%P", ike_proposal);
 			fprintf(out, "%12s[%d]: IKE proposal: %s\n",
 					ike_sa->get_name(ike_sa), ike_sa->get_unique_id(ike_sa),
-					ike_proposal);
+					buf+4);
 		}		
 	}
 }

src/charon/sa/ike_sa.c

@@ -191,10 +191,10 @@ struct private_ike_sa_t {
 	linked_list_t *child_sas;
 	
 	/**
-	 * String describing the selected IKE proposal
+	 * Selected IKE proposal
 	 */
-	char *selected_proposal;
-
+	proposal_t *selected_proposal;
+	
 	/**
 	 * crypter for inbound traffic
 	 */
@@ -1767,26 +1767,20 @@ static status_t derive_keys(private_ike_sa_t *this,
 	/* all done, prf_plus not needed anymore */
 	prf_plus->destroy(prf_plus);
 	
+	/* save selected proposal */
+	this->selected_proposal = proposal->clone(proposal);
+	
 	return SUCCESS;
 }
 
 /**
  * Implementation of ike_sa_t.get_proposal.
  */
-static char* get_proposal(private_ike_sa_t *this)
+static proposal_t* get_proposal(private_ike_sa_t *this)
 {
 	return this->selected_proposal;
 }
 
-/**
- * Implementation of ike_sa_t.set_proposal.
- */
-static void set_proposal(private_ike_sa_t *this, char *proposal)
-{
-	free(this->selected_proposal);
-	this->selected_proposal = strdup(proposal);
-}
-
 /**
  * Implementation of ike_sa_t.add_child_sa.
  */
@@ -2467,7 +2461,7 @@ static void destroy(private_ike_sa_t *this)
 	DESTROY_IF(this->child_prf);
 	chunk_free(&this->skp_verify);
 	chunk_free(&this->skp_build);
-	free(this->selected_proposal);
+	DESTROY_IF(this->selected_proposal);
 	
 	if (this->my_virtual_ip)
 	{
@@ -2572,8 +2566,7 @@ ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id)
 	this->public.get_skp_verify = (chunk_t (*)(ike_sa_t *)) get_skp_verify;
 	this->public.get_skp_build = (chunk_t (*)(ike_sa_t *)) get_skp_build;
 	this->public.derive_keys = (status_t (*)(ike_sa_t *,proposal_t*,chunk_t,chunk_t,chunk_t,bool,prf_t*,prf_t*)) derive_keys;
-	this->public.get_proposal = (char* (*)(ike_sa_t*)) get_proposal;
-	this->public.set_proposal = (void (*)(ike_sa_t*,char*)) set_proposal;
+	this->public.get_proposal = (proposal_t* (*)(ike_sa_t*)) get_proposal;
 	this->public.add_child_sa = (void (*)(ike_sa_t*,child_sa_t*)) add_child_sa;
 	this->public.get_child_sa = (child_sa_t* (*)(ike_sa_t*,protocol_id_t,u_int32_t,bool)) get_child_sa;
 	this->public.create_child_sa_iterator = (iterator_t* (*)(ike_sa_t*)) create_child_sa_iterator;

src/charon/sa/ike_sa.h

@@ -737,19 +737,11 @@ struct ike_sa_t {
 							bool initiator, prf_t *child_prf, prf_t *old_prf);
 	
 	/**
-	 * Get the selected IKE proposal string
+	 * Get the selected IKE proposal
 	 *
-	 * @return				string describing the selected IKE proposal
+	 * @return				selected IKE proposal
 	 */
-	char* (*get_proposal)(ike_sa_t *this);			
-
-	/**
-	 * Set the selected IKE proposal string for status information purposes
-	 * (the "%P" printf format handler is used)
-     *
-	 * @param proposal		string describing the selected IKE proposal
-	 */
-	void (*set_proposal)(ike_sa_t *this, char *proposal);			
+	proposal_t* (*get_proposal)(ike_sa_t *this);					
 
 	/**
 	 * Get a multi purpose prf for the negotiated PRF function.

src/charon/sa/tasks/ike_init.c

@@ -433,15 +433,7 @@ static status_t build_r(private_ike_init_t *this, message_t *message)
 		message->add_notify(message, TRUE, NO_PROPOSAL_CHOSEN, chunk_empty);
 		return FAILED;
 	}
-
-	/* Keep the selected IKE proposal for status information purposes */
-	{
-		char buf[BUF_LEN];
-
-		snprintf(buf, BUF_LEN, "%P", this->proposal);
-		this->ike_sa->set_proposal(this->ike_sa, buf+4);
-	}
-
+	
 	build_payloads(this, message);
 	return SUCCESS;
 }
@@ -565,14 +557,6 @@ static status_t process_i(private_ike_init_t *this, message_t *message)
 		return FAILED;
 	}
 
-	/* Keep the selected IKE proposal for status information purposes */
-	{
-		char buf[BUF_LEN];
-
-		snprintf(buf, BUF_LEN, "%P", this->proposal);
-		this->ike_sa->set_proposal(this->ike_sa, buf+4);
-	}
-
 	return SUCCESS;
 }