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| author | Álvaro Neira Ayuso <alvaroneay@gmail.com> | 2013-08-20 17:58:46 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2013-08-20 21:01:09 +0200 |
| commit | c83c53a26de25c1e2900f7841647cec3b57c7438 (patch) | |
| tree | 4c0291b9a495e44911ba104650e2b04b4d4eb776 /src/expr/payload.c | |
| parent | 978988a0f4730f1da2cfd7e3fa0670711bb6b802 (diff) | |
rule: Add json parser support
Add function for parsing rules in JSON format
Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/expr/payload.c')
| -rw-r--r-- | src/expr/payload.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/expr/payload.c b/src/expr/payload.c index 340a0d8..84346a1 100644 --- a/src/expr/payload.c +++ b/src/expr/payload.c @@ -194,6 +194,48 @@ static inline int nft_str2base(const char *base) } static int +nft_rule_expr_payload_json_parse(struct nft_rule_expr *e, json_t *root) +{ +#ifdef JSON_PARSING + const char *base_str; + uint32_t reg, uval32; + int base; + + if (nft_jansson_value_parse_reg(root, "dreg", NFT_TYPE_U32, ®) != 0) + return -1; + + nft_rule_expr_set_u32(e, NFT_EXPR_PAYLOAD_DREG, reg); + + base_str = nft_jansson_value_parse_str(root, "base"); + if (base_str == NULL) + return -1; + + base = nft_str2base(base_str); + if (base < 0) + return -1; + + nft_rule_expr_set_u32(e, NFT_EXPR_PAYLOAD_BASE, base); + + if (nft_jansson_value_parse_val(root, "offset", NFT_TYPE_U32, + &uval32) != 0) + return -1; + + nft_rule_expr_set_u32(e, NFT_EXPR_PAYLOAD_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_PAYLOAD_LEN, uval32); + + return 0; +#else + errno = EOPNOTSUPP; + return -1; +#endif +} + +static int nft_rule_expr_payload_xml_parse(struct nft_rule_expr *e, mxml_node_t *tree) { #ifdef XML_PARSING @@ -286,6 +328,7 @@ struct expr_ops expr_ops_payload = { .build = nft_rule_expr_payload_build, .snprintf = nft_rule_expr_payload_snprintf, .xml_parse = nft_rule_expr_payload_xml_parse, + .json_parse = nft_rule_expr_payload_json_parse, }; static void __init expr_payload_init(void) |