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/byteorder.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) (limited to 'src/expr/byteorder.c') diff --git a/src/expr/byteorder.c b/src/expr/byteorder.c index e2d442c..f596ff3 100644 --- a/src/expr/byteorder.c +++ b/src/expr/byteorder.c @@ -193,6 +193,55 @@ static inline int nft_str2ntoh(const char *op) } } +static int +nft_rule_expr_byteorder_json_parse(struct nft_rule_expr *e, json_t *root) +{ +#ifdef JSON_PARSING + const char *op; + uint32_t uval32; + int ntoh; + + if (nft_jansson_value_parse_reg(root, "sreg", NFT_TYPE_U32, + &uval32) != 0) + return -1; + + nft_rule_expr_set_u32(e, NFT_EXPR_BYTEORDER_SREG, uval32); + + if (nft_jansson_value_parse_reg(root, "dreg", NFT_TYPE_U32, + &uval32) != 0) + return -1; + + nft_rule_expr_set_u32(e, NFT_EXPR_BYTEORDER_DREG, uval32); + + op = nft_jansson_value_parse_str(root, "op"); + if (op == NULL) + return -1; + + ntoh = nft_str2ntoh(op); + if (ntoh < 0) + return -1; + + nft_rule_expr_set_u32(e, NFT_EXPR_BYTEORDER_OP, ntoh); + + if (nft_jansson_value_parse_val(root, "len", NFT_TYPE_U32, + &uval32) != 0) + return -1; + + nft_rule_expr_set_u32(e, NFT_EXPR_BYTEORDER_LEN, uval32); + + if (nft_jansson_value_parse_val(root, "size", NFT_TYPE_U32, + &uval32) != 0) + return -1; + + nft_rule_expr_set_u32(e, NFT_EXPR_BYTEORDER_SIZE, uval32); + + return 0; +#else + errno = EOPNOTSUPP; + return -1; +#endif +} + static int nft_rule_expr_byteorder_xml_parse(struct nft_rule_expr *e, mxml_node_t *tree) { @@ -329,6 +378,7 @@ struct expr_ops expr_ops_byteorder = { .build = nft_rule_expr_byteorder_build, .snprintf = nft_rule_expr_byteorder_snprintf, .xml_parse = nft_rule_expr_byteorder_xml_parse, + .json_parse = nft_rule_expr_byteorder_json_parse, }; static void __init expr_byteorder_init(void) -- cgit v1.2.3