Insert certificates and secrets at the front of the lists.

As the lookup is also from front to back, certificates added later are
now found first, which is useful in case of e.g. "reread cacerts".

src/libstrongswan/credentials/sets/mem_cred.c

@@ -155,9 +155,9 @@ static certificate_t *add_cert_internal(private_mem_cred_t *this, bool trusted,
 {
 	certificate_t *cached;
 	this->lock->write_lock(this->lock);
-	if (this->untrusted->find_last(this->untrusted,
-								   (linked_list_match_t)certificate_equals,
-								   (void**)&cached, cert) == SUCCESS)
+	if (this->untrusted->find_first(this->untrusted,
+									(linked_list_match_t)certificate_equals,
+									(void**)&cached, cert) == SUCCESS)
 	{
 		cert->destroy(cert);
 		cert = cached->get_ref(cached);
@@ -166,9 +166,9 @@ static certificate_t *add_cert_internal(private_mem_cred_t *this, bool trusted,
 	{
 		if (trusted)
 		{
-			this->trusted->insert_last(this->trusted, cert->get_ref(cert));
+			this->trusted->insert_first(this->trusted, cert->get_ref(cert));
 		}
-		this->untrusted->insert_last(this->untrusted, cert->get_ref(cert));
+		this->untrusted->insert_first(this->untrusted, cert->get_ref(cert));
 	}
 	this->lock->unlock(this->lock);
 	return cert;
@@ -240,7 +240,7 @@ METHOD(mem_cred_t, add_crl, bool,
 
 	if (new)
 	{
-		this->untrusted->insert_last(this->untrusted, cert);
+		this->untrusted->insert_first(this->untrusted, cert);
 	}
 	this->lock->unlock(this->lock);
 	return new;
@@ -303,7 +303,7 @@ METHOD(mem_cred_t, add_key, void,
 	private_mem_cred_t *this, private_key_t *key)
 {
 	this->lock->write_lock(this->lock);
-	this->keys->insert_last(this->keys, key);
+	this->keys->insert_first(this->keys, key);
 	this->lock->unlock(this->lock);
 }
 
@@ -438,7 +438,7 @@ METHOD(mem_cred_t, add_shared_list, void,
 	);
 
 	this->lock->write_lock(this->lock);
-	this->shared->insert_last(this->shared, entry);
+	this->shared->insert_first(this->shared, entry);
 	this->lock->unlock(this->lock);
 }
 
@@ -455,7 +455,7 @@ METHOD(mem_cred_t, add_shared, void,
 		id = va_arg(args, identification_t*);
 		if (id)
 		{
-			owners->insert_last(owners, id);
+			owners->insert_first(owners, id);
 		}
 	}
 	while (id);