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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <netinet/in.h>
#include <sys/socket.h>
#include <linux/if.h>
#include <linux/netfilter/nf_tables.h>
#include <linux/netfilter/nfnetlink.h>
#include "netlink-types-internal.h"
#include "string-table.h"
static const NLType nfnl_nft_table_types[] = {
[NFTA_TABLE_NAME] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_TABLE_FLAGS] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem nfnl_nft_table_type_system = {
.count = ELEMENTSOF(nfnl_nft_table_types),
.types = nfnl_nft_table_types,
};
static const NLType nfnl_nft_chain_hook_types[] = {
[NFTA_HOOK_HOOKNUM] = { .type = NETLINK_TYPE_U32 },
[NFTA_HOOK_PRIORITY] = { .type = NETLINK_TYPE_U32 },
[NFTA_HOOK_DEV] = { .type = NETLINK_TYPE_STRING, .size = IFNAMSIZ - 1 },
};
static const NLTypeSystem nfnl_nft_chain_hook_type_system = {
.count = ELEMENTSOF(nfnl_nft_chain_hook_types),
.types = nfnl_nft_chain_hook_types,
};
static const NLType nfnl_nft_chain_types[] = {
[NFTA_CHAIN_TABLE] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_CHAIN_NAME] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_CHAIN_HOOK] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_chain_hook_type_system },
[NFTA_CHAIN_TYPE] = { .type = NETLINK_TYPE_STRING, .size = 16 },
[NFTA_CHAIN_FLAGS] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem nfnl_nft_chain_type_system = {
.count = ELEMENTSOF(nfnl_nft_chain_types),
.types = nfnl_nft_chain_types,
};
static const NLType nfnl_nft_expr_meta_types[] = {
[NFTA_META_DREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_META_KEY] = { .type = NETLINK_TYPE_U32 },
[NFTA_META_SREG] = { .type = NETLINK_TYPE_U32 },
};
static const NLType nfnl_nft_expr_payload_types[] = {
[NFTA_PAYLOAD_DREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_PAYLOAD_BASE] = { .type = NETLINK_TYPE_U32 },
[NFTA_PAYLOAD_OFFSET] = { .type = NETLINK_TYPE_U32 },
[NFTA_PAYLOAD_LEN] = { .type = NETLINK_TYPE_U32 },
};
static const NLType nfnl_nft_expr_nat_types[] = {
[NFTA_NAT_TYPE] = { .type = NETLINK_TYPE_U32 },
[NFTA_NAT_FAMILY] = { .type = NETLINK_TYPE_U32 },
[NFTA_NAT_REG_ADDR_MIN] = { .type = NETLINK_TYPE_U32 },
[NFTA_NAT_REG_ADDR_MAX] = { .type = NETLINK_TYPE_U32 },
[NFTA_NAT_REG_PROTO_MIN] = { .type = NETLINK_TYPE_U32 },
[NFTA_NAT_REG_PROTO_MAX] = { .type = NETLINK_TYPE_U32 },
[NFTA_NAT_FLAGS] = { .type = NETLINK_TYPE_U32 },
};
static const NLType nfnl_nft_data_types[] = {
[NFTA_DATA_VALUE] = { .type = NETLINK_TYPE_BINARY },
};
static const NLTypeSystem nfnl_nft_data_type_system = {
.count = ELEMENTSOF(nfnl_nft_data_types),
.types = nfnl_nft_data_types,
};
static const NLType nfnl_nft_expr_bitwise_types[] = {
[NFTA_BITWISE_SREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_BITWISE_DREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_BITWISE_LEN] = { .type = NETLINK_TYPE_U32 },
[NFTA_BITWISE_MASK] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_data_type_system },
[NFTA_BITWISE_XOR] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_data_type_system },
};
static const NLType nfnl_nft_expr_cmp_types[] = {
[NFTA_CMP_SREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_CMP_OP] = { .type = NETLINK_TYPE_U32 },
[NFTA_CMP_DATA] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_data_type_system },
};
static const NLType nfnl_nft_expr_fib_types[] = {
[NFTA_FIB_DREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_FIB_RESULT] = { .type = NETLINK_TYPE_U32 },
[NFTA_FIB_FLAGS] = { .type = NETLINK_TYPE_U32 },
};
static const NLType nfnl_nft_expr_lookup_types[] = {
[NFTA_LOOKUP_SET] = { .type = NETLINK_TYPE_STRING },
[NFTA_LOOKUP_SREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_LOOKUP_DREG] = { .type = NETLINK_TYPE_U32 },
[NFTA_LOOKUP_FLAGS] = { .type = NETLINK_TYPE_U32 },
};
static const NLType nfnl_nft_expr_masq_types[] = {
[NFTA_MASQ_FLAGS] = { .type = NETLINK_TYPE_U32 },
[NFTA_MASQ_REG_PROTO_MIN] = { .type = NETLINK_TYPE_U32 },
[NFTA_MASQ_REG_PROTO_MAX] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem nfnl_expr_data_type_systems[] = {
[NL_UNION_NFT_EXPR_DATA_BITWISE] = { .count = ELEMENTSOF(nfnl_nft_expr_bitwise_types),
.types = nfnl_nft_expr_bitwise_types },
[NL_UNION_NFT_EXPR_DATA_CMP] = { .count = ELEMENTSOF(nfnl_nft_expr_cmp_types),
.types = nfnl_nft_expr_cmp_types },
[NL_UNION_NFT_EXPR_DATA_FIB] = { .count = ELEMENTSOF(nfnl_nft_expr_fib_types),
.types = nfnl_nft_expr_fib_types },
[NL_UNION_NFT_EXPR_DATA_LOOKUP] = { .count = ELEMENTSOF(nfnl_nft_expr_lookup_types),
.types = nfnl_nft_expr_lookup_types },
[NL_UNION_NFT_EXPR_DATA_MASQ] = { .count = ELEMENTSOF(nfnl_nft_expr_masq_types),
.types = nfnl_nft_expr_masq_types },
[NL_UNION_NFT_EXPR_DATA_META] = { .count = ELEMENTSOF(nfnl_nft_expr_meta_types),
.types = nfnl_nft_expr_meta_types },
[NL_UNION_NFT_EXPR_DATA_NAT] = { .count = ELEMENTSOF(nfnl_nft_expr_nat_types),
.types = nfnl_nft_expr_nat_types },
[NL_UNION_NFT_EXPR_DATA_PAYLOAD] = { .count = ELEMENTSOF(nfnl_nft_expr_payload_types),
.types = nfnl_nft_expr_payload_types },
};
static const char* const nl_union_nft_expr_data_table[] = {
[NL_UNION_NFT_EXPR_DATA_BITWISE] = "bitwise",
[NL_UNION_NFT_EXPR_DATA_CMP] = "cmp",
[NL_UNION_NFT_EXPR_DATA_LOOKUP] = "lookup",
[NL_UNION_NFT_EXPR_DATA_META] = "meta",
[NL_UNION_NFT_EXPR_DATA_FIB] = "fib",
[NL_UNION_NFT_EXPR_DATA_MASQ] = "masq",
[NL_UNION_NFT_EXPR_DATA_NAT] = "nat",
[NL_UNION_NFT_EXPR_DATA_PAYLOAD] = "payload",
};
DEFINE_STRING_TABLE_LOOKUP(nl_union_nft_expr_data, NLUnionNFTExprData);
static const NLTypeSystemUnion nfnl_nft_data_expr_type_system_union = {
.num = _NL_UNION_NFT_EXPR_DATA_MAX,
.lookup = nl_union_nft_expr_data_from_string,
.type_systems = nfnl_expr_data_type_systems,
.match_type = NL_MATCH_SIBLING,
.match_attribute = NFTA_EXPR_NAME,
};
static const NLType nfnl_nft_rule_expr_types[] = {
[NFTA_EXPR_NAME] = { .type = NETLINK_TYPE_STRING, .size = 16 },
[NFTA_EXPR_DATA] = { .type = NETLINK_TYPE_UNION,
.type_system_union = &nfnl_nft_data_expr_type_system_union },
};
static const NLTypeSystem nfnl_nft_rule_expr_type_system = {
.count = ELEMENTSOF(nfnl_nft_rule_expr_types),
.types = nfnl_nft_rule_expr_types,
};
static const NLType nfnl_nft_rule_types[] = {
[NFTA_RULE_TABLE] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_RULE_CHAIN] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_RULE_EXPRESSIONS] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_rule_expr_type_system }
};
static const NLTypeSystem nfnl_nft_rule_type_system = {
.count = ELEMENTSOF(nfnl_nft_rule_types),
.types = nfnl_nft_rule_types,
};
static const NLType nfnl_nft_set_types[] = {
[NFTA_SET_TABLE] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_SET_NAME] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_SET_FLAGS] = { .type = NETLINK_TYPE_U32 },
[NFTA_SET_KEY_TYPE] = { .type = NETLINK_TYPE_U32 },
[NFTA_SET_KEY_LEN] = { .type = NETLINK_TYPE_U32 },
[NFTA_SET_DATA_TYPE] = { .type = NETLINK_TYPE_U32 },
[NFTA_SET_DATA_LEN] = { .type = NETLINK_TYPE_U32 },
[NFTA_SET_POLICY] = { .type = NETLINK_TYPE_U32 },
[NFTA_SET_ID] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem nfnl_nft_set_type_system = {
.count = ELEMENTSOF(nfnl_nft_set_types),
.types = nfnl_nft_set_types,
};
static const NLType nfnl_nft_setelem_types[] = {
[NFTA_SET_ELEM_KEY] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_data_type_system },
[NFTA_SET_ELEM_DATA] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_data_type_system },
[NFTA_SET_ELEM_FLAGS] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem nfnl_nft_setelem_type_system = {
.count = ELEMENTSOF(nfnl_nft_setelem_types),
.types = nfnl_nft_setelem_types,
};
static const NLType nfnl_nft_setelem_list_types[] = {
[NFTA_SET_ELEM_LIST_TABLE] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_SET_ELEM_LIST_SET] = { .type = NETLINK_TYPE_STRING, .size = NFT_TABLE_MAXNAMELEN - 1 },
[NFTA_SET_ELEM_LIST_ELEMENTS] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_setelem_type_system },
};
static const NLTypeSystem nfnl_nft_setelem_list_type_system = {
.count = ELEMENTSOF(nfnl_nft_setelem_list_types),
.types = nfnl_nft_setelem_list_types,
};
static const NLType nfnl_subsys_nft_types [] = {
[NFT_MSG_DELTABLE] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_table_type_system, .size = sizeof(struct nfgenmsg) },
[NFT_MSG_NEWTABLE] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_table_type_system, .size = sizeof(struct nfgenmsg) },
[NFT_MSG_NEWCHAIN] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_chain_type_system, .size = sizeof(struct nfgenmsg) },
[NFT_MSG_NEWRULE] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_rule_type_system, .size = sizeof(struct nfgenmsg) },
[NFT_MSG_NEWSET] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_set_type_system, .size = sizeof(struct nfgenmsg) },
[NFT_MSG_NEWSETELEM] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_setelem_list_type_system, .size = sizeof(struct nfgenmsg) },
[NFT_MSG_DELSETELEM] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_nft_setelem_list_type_system, .size = sizeof(struct nfgenmsg) },
};
static const NLTypeSystem nfnl_subsys_nft_type_system = {
.count = ELEMENTSOF(nfnl_subsys_nft_types),
.types = nfnl_subsys_nft_types,
};
static const NLType nfnl_msg_batch_types [] = {
[NFNL_BATCH_GENID] = { .type = NETLINK_TYPE_U32 }
};
static const NLTypeSystem nfnl_msg_batch_type_system = {
.count = ELEMENTSOF(nfnl_msg_batch_types),
.types = nfnl_msg_batch_types,
};
static const NLType nfnl_subsys_none_types[] = {
[NFNL_MSG_BATCH_BEGIN] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_msg_batch_type_system, .size = sizeof(struct nfgenmsg) },
[NFNL_MSG_BATCH_END] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_msg_batch_type_system, .size = sizeof(struct nfgenmsg) },
};
static const NLTypeSystem nfnl_subsys_none_type_system = {
.count = ELEMENTSOF(nfnl_subsys_none_types),
.types = nfnl_subsys_none_types,
};
static const NLType nfnl_types[] = {
[NFNL_SUBSYS_NONE] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_subsys_none_type_system },
[NFNL_SUBSYS_NFTABLES] = { .type = NETLINK_TYPE_NESTED, .type_system = &nfnl_subsys_nft_type_system },
};
static const NLTypeSystem nfnl_type_system = {
.count = ELEMENTSOF(nfnl_types),
.types = nfnl_types,
};
int nfnl_get_type(uint16_t nlmsg_type, const NLType **ret) {
const NLTypeSystem *subsys;
int r;
r = type_system_get_type_system(&nfnl_type_system, &subsys, nlmsg_type >> 8);
if (r < 0)
return r;
return type_system_get_type(subsys, ret, nlmsg_type & ((1U << 8) - 1));
}
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