libnftnl  1.2.9
nft-expr_reject-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 <netinet/in.h>
11 #include <netinet/ip.h>
12 #include <linux/netfilter/nf_tables.h>
13 #include <linux/netfilter/xt_iprange.h>
14 #include <libmnl/libmnl.h>
15 #include <libnftnl/rule.h>
16 #include <libnftnl/expr.h>
17 
18 static int test_ok = 1;
19 
20 static void print_err(const char *msg)
21 {
22  test_ok = 0;
23  printf("\033[31mERROR:\e[0m %s\n", msg);
24 }
25 
26 static void cmp_nftnl_expr(struct nftnl_expr *rule_a,
27  struct nftnl_expr *rule_b)
28 {
29  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_REJECT_TYPE) !=
30  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_REJECT_TYPE))
31  print_err("Expr NFTNL_EXPR_REJECT_TYPE mismatches");
32  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_REJECT_CODE) !=
33  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_REJECT_CODE))
34  print_err("Expr NFTNL_EXPR_REJECT_CODE mismatches");
35 }
36 
37 int 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("reject");
51  if (ex == NULL)
52  print_err("OOM");
53 
54  nftnl_expr_set_u32(ex, NFTNL_EXPR_REJECT_TYPE, 0x12345678);
55  nftnl_expr_set_u32(ex, NFTNL_EXPR_REJECT_CODE, 0x45681234);
56 
57  nftnl_rule_add_expr(a, ex);
58 
59  nlh = nftnl_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
60  nftnl_rule_nlmsg_build_payload(nlh, a);
61 
62  if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
63  print_err("parsing problems");
64 
65  iter_a = nftnl_expr_iter_create(a);
66  iter_b = nftnl_expr_iter_create(b);
67  if (iter_a == NULL || iter_b == NULL)
68  print_err("OOM");
69 
70  rule_a = nftnl_expr_iter_next(iter_a);
71  rule_b = nftnl_expr_iter_next(iter_b);
72  if (rule_a == NULL || rule_b == NULL)
73  print_err("OOM");
74 
75  cmp_nftnl_expr(rule_a, rule_b);
76 
77  if (nftnl_expr_iter_next(iter_a) != NULL ||
78  nftnl_expr_iter_next(iter_b) != NULL)
79  print_err("More 1 expr.");
80 
81  nftnl_expr_iter_destroy(iter_a);
82  nftnl_expr_iter_destroy(iter_b);
83  nftnl_rule_free(a);
84  nftnl_rule_free(b);
85 
86  if (!test_ok)
87  exit(EXIT_FAILURE);
88 
89  printf("%s: \033[32mOK\e[0m\n", argv[0]);
90  return EXIT_SUCCESS;
91 }