child-create: Fix error handling if nonceg can't be created

As with ike-init we can't return NULL in the task constructor.

diff --git a/src/libcharon/sa/ikev2/tasks/child_create.c b/src/libcharon/sa/ikev2/tasks/child_create.c
index 868f271..d74eaab 100644 (file)
--- a/src/libcharon/sa/ikev2/tasks/child_create.c
+++ b/src/libcharon/sa/ikev2/tasks/child_create.c
@@ -219,15 +219,20 @@ static status_t get_nonce(message_t *message, chunk_t *nonce)
 /**
  * generate a new nonce to include in a CREATE_CHILD_SA message
  */
-static status_t generate_nonce(private_child_create_t *this)
+static bool generate_nonce(private_child_create_t *this)
 {
+       if (!this->nonceg)
+       {
+               DBG1(DBG_IKE, "no nonce generator found to create nonce");
+               return FALSE;
+       }
        if (!this->nonceg->allocate_nonce(this->nonceg, NONCE_SIZE,
                                                                          &this->my_nonce))
        {
                DBG1(DBG_IKE, "nonce allocation failed");
-               return FAILED;
+               return FALSE;
        }
-       return SUCCESS;
+       return TRUE;
 }
 
 /**
@@ -928,9 +933,10 @@ METHOD(task_t, build_i, status_t,
                case IKE_SA_INIT:
                        return get_nonce(message, &this->my_nonce);
                case CREATE_CHILD_SA:
-                       if (generate_nonce(this) != SUCCESS)
+                       if (!generate_nonce(this))
                        {
-                               message->add_notify(message, FALSE, NO_PROPOSAL_CHOSEN, chunk_empty);
+                               message->add_notify(message, FALSE, NO_PROPOSAL_CHOSEN,
+                                                                       chunk_empty);
                                return SUCCESS;
                        }
                        if (!this->retry)
@@ -1189,7 +1195,7 @@ METHOD(task_t, build_r, status_t,
                case IKE_SA_INIT:
                        return get_nonce(message, &this->my_nonce);
                case CREATE_CHILD_SA:
-                       if (generate_nonce(this) != SUCCESS )
+                       if (!generate_nonce(this))
                        {
                                message->add_notify(message, FALSE, NO_PROPOSAL_CHOSEN,
                                                                        chunk_empty);
@@ -1665,14 +1671,7 @@ child_create_t *child_create_create(ike_sa_t *ike_sa,
                .rekey = rekey,
                .retry = FALSE,
        );
-
        this->nonceg = this->keymat->keymat.create_nonce_gen(&this->keymat->keymat);
-       if (!this->nonceg)
-       {
-               DBG1(DBG_IKE, "no nonce generator found to create nonce");
-               free(this);
-               return NULL;
-       }
 
        if (config)
        {
@@ -1686,6 +1685,5 @@ child_create_t *child_create_create(ike_sa_t *ike_sa,
                this->public.task.process = _process_r;
                this->initiator = FALSE;
        }
-
        return &this->public;
 }