Commit 4b2beb42 authored by Daniel Salzman's avatar Daniel Salzman

xfr: check for expired zone if multi-message transfer to avoid NULL access

parent 688e77e4
/* Copyright (C) 2017 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -27,8 +27,12 @@ int xfr_process_list(knot_pkt_t *pkt, xfr_put_cb put, knotd_qdata_t *qdata)
knot_mm_t *mm = qdata->mm;
struct xfr_proc *xfer = qdata->extra->ext;
zone_contents_t *zone = qdata->extra->zone->contents;
knot_rrset_t soa_rr = node_rrset(zone->apex, KNOT_RRTYPE_SOA);
/* Check if the zone wasn't expired during multi-message transfer. */
zone_contents_t *contents = qdata->extra->zone->contents;
if (contents == NULL) {
return KNOT_ENOZONE;
}
knot_rrset_t soa_rr = node_rrset(contents->apex, KNOT_RRTYPE_SOA);
/* Prepend SOA on first packet. */
if (xfer->stats.messages == 0) {
......
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