From 346b24fde7fceec7e69306e3e3fa07056aecc088 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Neira=20Ayuso?= Date: Tue, 27 Aug 2013 20:10:47 +0200 Subject: set: Add json parser support Add function for parsing set in format JSON. Signed-off-by: Alvaro Neira Ayuso Signed-off-by: Pablo Neira Ayuso --- src/set.c | 99 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) (limited to 'src/set.c') diff --git a/src/set.c b/src/set.c index 3617265..1168b54 100644 --- a/src/set.c +++ b/src/set.c @@ -303,6 +303,102 @@ int nft_set_nlmsg_parse(const struct nlmsghdr *nlh, struct nft_set *s) } EXPORT_SYMBOL(nft_set_nlmsg_parse); +static int nft_set_json_parse(struct nft_set *s, const char *json) +{ +#ifdef JSON_PARSING + json_t *root, *node, *array, *json_elem; + json_error_t error; + uint32_t uval32; + int family, i; + const char *valstr; + struct nft_set_elem *elem; + + node = nft_jansson_create_root(json, &error); + if (node == NULL) + return -1; + + root = nft_jansson_get_node(node, "set"); + if (root == NULL) + return -1; + + valstr = nft_jansson_parse_str(root, "name"); + if (valstr == NULL) + return -1; + + nft_set_attr_set_str(s, NFT_SET_ATTR_NAME, valstr); + + valstr = nft_jansson_parse_str(root, "table"); + if (valstr == NULL) + return -1; + + nft_set_attr_set_str(s, NFT_SET_ATTR_TABLE, valstr); + + if (nft_jansson_parse_val(root, "flags", NFT_TYPE_U32, &uval32) < 0) + return -1; + + nft_set_attr_set_u32(s, NFT_SET_ATTR_FLAGS, uval32); + + if (nft_jansson_parse_family(root, &family) < 0) + return -1; + + nft_set_attr_set_u32(s, NFT_SET_ATTR_FAMILY, family); + + if (nft_jansson_parse_val(root, "key_type", NFT_TYPE_U32, &uval32) < 0) + return -1; + + nft_set_attr_set_u32(s, NFT_SET_ATTR_KEY_TYPE, uval32); + + if (nft_jansson_parse_val(root, "key_len", NFT_TYPE_U32, &uval32) < 0) + return -1; + + nft_set_attr_set_u32(s, NFT_SET_ATTR_KEY_LEN, uval32); + + if (nft_jansson_node_exist(root, "data_type")) { + if (nft_jansson_parse_val(root, "data_type", NFT_TYPE_U32, + &uval32) < 0) + goto err; + + nft_set_attr_set_u32(s, NFT_SET_ATTR_DATA_TYPE, uval32); + } + + if (nft_jansson_node_exist(root, "data_len")) { + if (nft_jansson_parse_val(root, "data_len", NFT_TYPE_U32, + &uval32) < 0) + goto err; + + nft_set_attr_set_u32(s, NFT_SET_ATTR_DATA_LEN, uval32); + } + + if (nft_jansson_node_exist(root, "set_elem")) { + array = json_object_get(root, "set_elem"); + for (i = 0; i < json_array_size(array); i++) { + elem = nft_set_elem_alloc(); + if (elem == NULL) + goto err; + + json_elem = json_array_get(array, i); + if (json_elem == NULL) + goto err; + + if (nft_set_elem_json_parse(elem, json_elem) < 0) + goto err; + + list_add_tail(&elem->head, &s->element_list); + } + + } + + nft_jansson_free_root(node); + return 0; +err: + nft_jansson_free_root(node); + return -1; +#else + errno = EOPNOTSUPP; + return -1; +#endif +} + static int nft_set_xml_parse(struct nft_set *s, const char *xml) { #ifdef XML_PARSING @@ -415,6 +511,9 @@ int nft_set_parse(struct nft_set *s, enum nft_set_parse_type type, case NFT_SET_PARSE_XML: ret = nft_set_xml_parse(s, data); break; + case NFT_SET_PARSE_JSON: + ret = nft_set_json_parse(s, data); + break; default: ret = -1; errno = EOPNOTSUPP; -- cgit v1.2.3