From 4a684c2ee4cdff2c5c6bfa06d93b58cb4e868bf6 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Neira=20Ayuso?= Date: Thu, 27 Jun 2013 21:56:18 +0200 Subject: src: support JSON format in chain, rule and expressions While at it, order possible switch cases of _snprintf. Signed-off-by: Alvaro Neira Ayuso Signed-off-by: Pablo Neira Ayuso --- src/expr/payload.c | 39 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 36 insertions(+), 3 deletions(-) (limited to 'src/expr/payload.c') 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 @@ -166,6 +166,36 @@ nft_rule_expr_payload_parse(struct nft_rule_expr *e, struct nlattr *attr) return 0; } +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) { @@ -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; } -- cgit v1.2.3