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/*
* Socket expression/statement related definition and types.
*
* Copyright (c) 2018 Máté Eckl <ecklm94@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <nftables.h>
#include <expression.h>
#include <socket.h>
#include <json.h>
const struct socket_template socket_templates[] = {
[NFT_SOCKET_TRANSPARENT] = {
.token = "transparent",
.dtype = &integer_type,
.len = BITS_PER_BYTE,
.byteorder = BYTEORDER_HOST_ENDIAN,
},
[NFT_SOCKET_MARK] = {
.token = "mark",
.dtype = &mark_type,
.len = 4 * BITS_PER_BYTE,
.byteorder = BYTEORDER_HOST_ENDIAN,
},
};
static void socket_expr_print(const struct expr *expr, struct output_ctx *octx)
{
nft_print(octx, "socket %s", socket_templates[expr->socket.key].token);
}
static bool socket_expr_cmp(const struct expr *e1, const struct expr *e2)
{
return e1->socket.key == e2->socket.key;
}
static void socket_expr_clone(struct expr *new, const struct expr *expr)
{
new->socket.key = expr->socket.key;
}
static const struct expr_ops socket_expr_ops = {
.type = EXPR_SOCKET,
.name = "socket",
.print = socket_expr_print,
.json = socket_expr_json,
.cmp = socket_expr_cmp,
.clone = socket_expr_clone,
};
struct expr *socket_expr_alloc(const struct location *loc, enum nft_socket_keys key)
{
const struct socket_template *tmpl = &socket_templates[key];
struct expr *expr;
expr = expr_alloc(loc, &socket_expr_ops, tmpl->dtype,
tmpl->byteorder, tmpl->len);
expr->socket.key = key;
return expr;
}
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