1 files changed, 36 insertions, 3 deletions

diff --git a/src/expr/payload.c b/src/expr/payload.c
index ae72fa2..2111c47 100644
--- a/src/expr/payload.c
+++ b/src/expr/payload.c
@@ -167,6 +167,36 @@ nft_rule_expr_payload_parse(struct nft_rule_expr *e, struct nlattr *attr)
 }
 
 static int
+nft_rule_expr_payload_snprintf_json(char *buf, size_t len, uint32_t flags,
+				   struct nft_expr_payload *p)
+{
+	int size = len, offset = 0, ret;
+
+	ret = snprintf(buf, len, "\"dreg\" : %u, \"offset\" : %u, \"len\" : %u, ",
+					p->dreg, p->offset, p->len);
+	SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
+
+	switch (p->base) {
+	case NFT_PAYLOAD_LL_HEADER:
+		ret = snprintf(buf+offset, len, "\"base\" : \"link\"");
+		break;
+	case NFT_PAYLOAD_NETWORK_HEADER:
+		ret = snprintf(buf+offset, len, "\"base\" : \"network\"");
+		break;
+	case NFT_PAYLOAD_TRANSPORT_HEADER:
+		ret = snprintf(buf+offset, len, "\"base\" : \"transport\"");
+		break;
+	default:
+		ret = snprintf(buf+offset, len, "\"base\" : \"unknown\"");
+		break;
+	}
+
+	SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
+
+	return offset;
+}
+
+static int
 nft_rule_expr_payload_xml_parse(struct nft_rule_expr *e, char *xml)
 {
 #ifdef XML_PARSING
@@ -304,13 +334,16 @@ nft_rule_expr_payload_snprintf(char *buf, size_t len, uint32_t type,
 	struct nft_expr_payload *payload = (struct nft_expr_payload *)e->data;
 
 	switch(type) {
-	case NFT_RULE_O_XML:
-		return nft_rule_expr_payload_snprintf_xml(buf, len, flags,
-							  payload);
 	case NFT_RULE_O_DEFAULT:
 		return snprintf(buf, len, "dreg=%u base=%u offset=%u len=%u ",
 				payload->dreg, payload->base,
 				payload->offset, payload->len);
+	case NFT_RULE_O_XML:
+		return nft_rule_expr_payload_snprintf_xml(buf, len, flags,
+							  payload);
+	case NFT_RULE_O_JSON:
+		return nft_rule_expr_payload_snprintf_json(buf, len, flags,
+							  payload);
 	default:
 		break;
 	}