From c83c53a26de25c1e2900f7841647cec3b57c7438 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Neira=20Ayuso?= Date: Tue, 20 Aug 2013 17:58:46 +0200 Subject: rule: Add json parser support Add function for parsing rules in JSON format Signed-off-by: Alvaro Neira Ayuso Signed-off-by: Pablo Neira Ayuso --- src/expr/exthdr.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) (limited to 'src/expr/exthdr.c') diff --git a/src/expr/exthdr.c b/src/expr/exthdr.c index 9781232..8d4e8b7 100644 --- a/src/expr/exthdr.c +++ b/src/expr/exthdr.c @@ -192,6 +192,48 @@ static inline int str2exthdr_type(const char *str) return -1; } +static int +nft_rule_expr_exthdr_json_parse(struct nft_rule_expr *e, json_t *root) +{ +#ifdef JSON_PARSING + const char *exthdr_type; + uint32_t uval32; + int type; + + if (nft_jansson_value_parse_reg(root, "dreg", NFT_TYPE_U32, + &uval32) != 0) + return -1; + + nft_rule_expr_set_u32(e, NFT_EXPR_EXTHDR_DREG, uval32); + + exthdr_type = nft_jansson_value_parse_str(root, "exthdr_type"); + if (exthdr_type == NULL) + return -1; + + type = str2exthdr_type(exthdr_type); + if (type < 0) + return -1; + + nft_rule_expr_set_u32(e, NFT_EXPR_EXTHDR_TYPE, type); + + if (nft_jansson_value_parse_val(root, "offset", NFT_TYPE_U32, + &uval32) != 0) + return -1; + + nft_rule_expr_set_u32(e, NFT_EXPR_EXTHDR_OFFSET, uval32); + + if (nft_jansson_value_parse_val(root, "len", NFT_TYPE_U32, + &uval32) != 0) + return -1; + + nft_rule_expr_set_u32(e, NFT_EXPR_EXTHDR_LEN, uval32); + + return 0; +#else + errno = EOPNOTSUPP; + return -1; +#endif +} static int nft_rule_expr_exthdr_xml_parse(struct nft_rule_expr *e, mxml_node_t *tree) @@ -284,6 +326,7 @@ struct expr_ops expr_ops_exthdr = { .build = nft_rule_expr_exthdr_build, .snprintf = nft_rule_expr_exthdr_snprintf, .xml_parse = nft_rule_expr_exthdr_xml_parse, + .json_parse = nft_rule_expr_exthdr_json_parse, }; static void __init expr_exthdr_init(void) -- cgit v1.2.3