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/*
* (C) 2013 by Ana Rey Botello <anarey@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <linux/netfilter/nf_tables.h>
#include <libmnl/libmnl.h>
#include <libnftnl/rule.h>
#include <libnftnl/expr.h>
static int test_ok = 1;
static void print_err(const char *msg)
{
test_ok = 0;
printf("\033[31mERROR:\e[0m %s\n", msg);
}
static void cmp_nftnl_expr_verdict(struct nftnl_expr *rule_a,
struct nftnl_expr *rule_b)
{
const char *chain_a, *chain_b;
uint32_t len_a, len_b;
if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_IMM_DREG) !=
nftnl_expr_get_u32(rule_b, NFTNL_EXPR_IMM_DREG))
print_err("Expr NFTNL_EXPR_IMM_DREG mismatches");
if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_IMM_VERDICT) !=
nftnl_expr_get_u32(rule_b, NFTNL_EXPR_IMM_VERDICT))
print_err("Expr NFTNL_EXPR_IMM_VERDICT mismatches");
chain_a = nftnl_expr_get(rule_a, NFTNL_EXPR_IMM_CHAIN, &len_a);
chain_b = nftnl_expr_get(rule_b, NFTNL_EXPR_IMM_CHAIN, &len_b);
if (len_a != len_b || strncmp(chain_a, chain_b, len_a))
print_err("Expr NFTNL_EXPR_IMM_CHAIN mismatches");
}
static void cmp_nftnl_expr_value(struct nftnl_expr *rule_a,
struct nftnl_expr *rule_b)
{
const uint32_t *data_a, *data_b;
uint32_t len_a, len_b;
if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_IMM_DREG) !=
nftnl_expr_get_u32(rule_b, NFTNL_EXPR_IMM_DREG))
print_err("Expr NFTNL_EXPR_IMM_DREG mismatches");
data_a = nftnl_expr_get(rule_a, NFTNL_EXPR_IMM_DATA, &len_a);
data_b = nftnl_expr_get(rule_b, NFTNL_EXPR_IMM_DATA, &len_b);
if (len_a != len_b || memcmp(data_a, data_b, len_a))
print_err("Expr NFTNL_EXPR_IMM_DATA mismatches");
}
int main(int argc, char *argv[])
{
struct nftnl_rule *a, *b;
struct nftnl_expr *ex_val, *ex_ver;
struct nlmsghdr *nlh;
char buf[4096];
struct nftnl_expr_iter *iter_a, *iter_b;
struct nftnl_expr *rule_a, *rule_b;
char *chain = "tests_chain01234";
char *data = "test_data_01234";
a = nftnl_rule_alloc();
b = nftnl_rule_alloc();
if (a == NULL || b == NULL)
print_err("OOM");
ex_val = nftnl_expr_alloc("immediate");
ex_ver = nftnl_expr_alloc("immediate");
if (!ex_val || !ex_ver)
print_err("OOM");
nftnl_expr_set_u32(ex_val, NFTNL_EXPR_IMM_DREG, 0x1234568);
nftnl_expr_set(ex_val, NFTNL_EXPR_IMM_DATA, data, sizeof(data));
nftnl_expr_set_u32(ex_ver, NFTNL_EXPR_IMM_DREG, 0x1234568);
nftnl_expr_set_u32(ex_ver, NFTNL_EXPR_IMM_VERDICT, NFT_GOTO);
nftnl_expr_set(ex_ver, NFTNL_EXPR_IMM_CHAIN, chain, sizeof(chain));
nftnl_rule_add_expr(a, ex_val);
nftnl_rule_add_expr(a, ex_ver);
nlh = nftnl_rule_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
nftnl_rule_nlmsg_build_payload(nlh, a);
if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
print_err("parsing problems");
iter_a = nftnl_expr_iter_create(a);
iter_b = nftnl_expr_iter_create(b);
if (iter_a == NULL || iter_b == NULL)
print_err("OOM");
rule_a = nftnl_expr_iter_next(iter_a);
rule_b = nftnl_expr_iter_next(iter_b);
if (rule_a == NULL || rule_b == NULL)
print_err("OOM");
cmp_nftnl_expr_value(rule_a, rule_b);
rule_a = nftnl_expr_iter_next(iter_a);
rule_b = nftnl_expr_iter_next(iter_b);
if (rule_a == NULL || rule_b == NULL)
print_err("OOM");
cmp_nftnl_expr_verdict(rule_a, rule_b);
if (nftnl_expr_iter_next(iter_a) != NULL ||
nftnl_expr_iter_next(iter_b) != NULL)
print_err("More 2 expr.");
nftnl_expr_iter_destroy(iter_a);
nftnl_expr_iter_destroy(iter_b);
nftnl_rule_free(a);
nftnl_rule_free(b);
if (!test_ok)
exit(EXIT_FAILURE);
printf("%s: \033[32mOK\e[0m\n", argv[0]);
return EXIT_SUCCESS;
}
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