[lonetix/bgp] Check for AGGREGATOR4 presence before checking its correctness

3 years ago · bfdde40031
parent 631ee335d8
commit bfdde40031
1 changed files with 8 additions and 6 deletions
--- a/lonetix/bgp/attribute.c
+++ b/lonetix/bgp/attribute.c
@ -547,6 +547,7 @@ Bgpattr *Bgp_GetRealAggregator(const Bgpattrseg *tpa,
 		if (Bgp_GetErrStat(NULL))
 			return NULL;  // forward error

+		if (attr4) {
 			if (!BGP_CHKAGGRSIZ(attr4, TRUE)) {
 				Bgp_SetErrStat(BGPEBADAGGR4);
 				return NULL;
@ -555,6 +556,7 @@ Bgpattr *Bgp_GetRealAggregator(const Bgpattrseg *tpa,
 			attr     = attr4;
 			asn32bit = TRUE;
 		}
+	}

 	*isAsn32bit = asn32bit;
 	return attr;  // error already cleared