Check if we have an RNG for IKEv1 task manager before using it

diff --git a/src/libcharon/sa/ikev1/task_manager_v1.c b/src/libcharon/sa/ikev1/task_manager_v1.c
index 01427f6..c07df41 100755 (executable)
--- a/src/libcharon/sa/ikev1/task_manager_v1.c
+++ b/src/libcharon/sa/ikev1/task_manager_v1.c
@@ -334,12 +334,6 @@ METHOD(task_manager_t, initiate, status_t,
        exchange_type_t exchange = EXCHANGE_TYPE_UNDEFINED;
        bool new_mid = FALSE, expect_response = FALSE, flushed = FALSE;
 
-       if (!this->rng)
-       {
-               DBG1(DBG_IKE, "no RNG supported");
-               return FAILED;
-       }
-
        if (this->initiating.type != EXCHANGE_TYPE_UNDEFINED)
        {
                DBG2(DBG_IKE, "delaying task initiation, %N exchange in progress",
@@ -1132,7 +1126,7 @@ METHOD(task_manager_t, process_message, status_t,
                        job = (job_t*)delete_ike_sa_job_create(ike_sa_id, FALSE);
                        lib->scheduler->schedule_job(lib->scheduler, job,
                                        lib->settings->get_int(lib->settings,
-                                               "charon.half_open_timeout",  HALF_OPEN_IKE_SA_TIMEOUT));
+                                               "charon.half_open_timeout", HALF_OPEN_IKE_SA_TIMEOUT));
                }
                this->ike_sa->set_statistic(this->ike_sa, STAT_INBOUND,
                                                                        time_monotonic(NULL));
@@ -1482,9 +1476,15 @@ task_manager_v1_t *task_manager_v1_create(ike_sa_t *ike_sa)
                                                                "charon.retransmit_base", RETRANSMIT_BASE),
        );
 
-       this->rng->get_bytes(this->rng, sizeof(this->dpd_send_seqnr),
-                                                        (void*)&this->dpd_send_seqnr);
+       if (!this->rng)
+       {
+               DBG1(DBG_IKE, "no RNG found, unable to create IKE_SA");
+               destroy(this);
+               return NULL;
+       }
 
+       this->rng->get_bytes(this->rng, sizeof(this->dpd_send_seqnr),
+                                                (void*)&this->dpd_send_seqnr);
        this->dpd_send_seqnr &= 0x7FFFFFFF;
 
        return &this->public;