libnftnl 1.2.9
nft-expr_redir-test.c
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * (C) 2013 by Ana Rey Botello <anarey@gmail.com>
4 */
5
6#include <stdio.h>
7#include <stdlib.h>
8#include <string.h>
9
10#include <linux/netfilter/nf_tables.h>
11#include <libmnl/libmnl.h>
12#include <libnftnl/rule.h>
13#include <libnftnl/expr.h>
14
15static int test_ok = 1;
16
17static void print_err(const char *msg)
18{
19 test_ok = 0;
20 printf("\033[31mERROR:\e[0m %s\n", msg);
21}
22
23static void cmp_nftnl_expr(struct nftnl_expr *rule_a,
24 struct nftnl_expr *rule_b)
25{
26 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_REDIR_REG_PROTO_MIN) !=
27 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_REDIR_REG_PROTO_MIN))
28 print_err("Expr NFTNL_EXPR_REDIR_REG_PROTO_MIN mismatches");
29 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_REDIR_REG_PROTO_MAX) !=
30 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_REDIR_REG_PROTO_MAX))
31 print_err("Expr NFTNL_EXPR_REDIR_REG_PROTO_MAX mismatches");
32 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_REDIR_FLAGS) !=
33 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_REDIR_FLAGS))
34 print_err("Expr NFTNL_EXPR_REDIR_FLAGS mismatches");
35}
36
37int main(int argc, char *argv[])
38{
39 struct nftnl_rule *a, *b;
40 struct nftnl_expr *ex;
41 struct nlmsghdr *nlh;
42 char buf[4096];
43 struct nftnl_expr_iter *iter_a, *iter_b;
44 struct nftnl_expr *rule_a, *rule_b;
45
46 a = nftnl_rule_alloc();
47 b = nftnl_rule_alloc();
48 if (a == NULL || b == NULL)
49 print_err("OOM");
50 ex = nftnl_expr_alloc("redir");
51 if (ex == NULL)
52 print_err("OOM");
53
54 nftnl_expr_set_u32(ex, NFTNL_EXPR_REDIR_REG_PROTO_MIN, 0x12345678);
55 nftnl_expr_set_u32(ex, NFTNL_EXPR_REDIR_REG_PROTO_MAX, 0x56781234);
56 nftnl_expr_set_u32(ex, NFTNL_EXPR_REDIR_FLAGS, 0x12003400);
57
58 nftnl_rule_add_expr(a, ex);
59
60 nlh = nftnl_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
61 nftnl_rule_nlmsg_build_payload(nlh, a);
62
63 if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
64 print_err("Parsing problems");
65
66 iter_a = nftnl_expr_iter_create(a);
67 iter_b = nftnl_expr_iter_create(b);
68 if (iter_a == NULL || iter_b == NULL)
69 print_err("OOM");
70
71 rule_a = nftnl_expr_iter_next(iter_a);
72 rule_b = nftnl_expr_iter_next(iter_b);
73 if (rule_a == NULL || rule_b == NULL)
74 print_err("OOM");
75
76 cmp_nftnl_expr(rule_a, rule_b);
77
78 if (nftnl_expr_iter_next(iter_a) != NULL ||
79 nftnl_expr_iter_next(iter_b) != NULL)
80 print_err("More than 1 expr.");
81
82 nftnl_expr_iter_destroy(iter_a);
83 nftnl_expr_iter_destroy(iter_b);
84 nftnl_rule_free(a);
85 nftnl_rule_free(b);
86
87 if (!test_ok)
88 exit(EXIT_FAILURE);
89
90 printf("%s: \033[32mOK\e[0m\n", argv[0]);
91 return EXIT_SUCCESS;
92}