libnftnl  1.2.9
nft-expr_nat-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_NAT_TYPE) !=
30  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_NAT_TYPE))
31  print_err("Expr NFTNL_EXPR_NAT_TYPE mismatches");
32  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_NAT_FAMILY) !=
33  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_NAT_FAMILY))
34  print_err("Expr NFTNL_EXPR_NAT_FAMILY mismatches");
35  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_NAT_REG_ADDR_MIN) !=
36  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_NAT_REG_ADDR_MIN))
37  print_err("Expr NFTNL_EXPR_NAT_REG_ADDR_MIN mismatches");
38  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_NAT_REG_ADDR_MAX) !=
39  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_NAT_REG_ADDR_MAX))
40  print_err("Expr NFTNL_EXPR_NAT_REG_ADDR_MAX mismatches");
41  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_NAT_REG_PROTO_MIN) !=
42  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_NAT_REG_PROTO_MIN))
43  print_err("Expr NFTNL_EXPR_NAT_REG_PROTO_MIN mismatches");
44  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_NAT_REG_PROTO_MAX) !=
45  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_NAT_REG_PROTO_MAX))
46  print_err("Expr NFTNL_EXPR_NAT_REG_PROTO_MAX mismatches");
47  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_NAT_FLAGS) !=
48  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_NAT_FLAGS))
49  print_err("Expr NFTNL_EXPR_NAT_FLAGS mismatches");
50 }
51 
52 int main(int argc, char *argv[])
53 {
54  struct nftnl_rule *a, *b;
55  struct nftnl_expr *ex;
56  struct nlmsghdr *nlh;
57  char buf[4096];
58  struct nftnl_expr_iter *iter_a, *iter_b;
59  struct nftnl_expr *rule_a, *rule_b;
60 
61  a = nftnl_rule_alloc();
62  b = nftnl_rule_alloc();
63  if (a == NULL || b == NULL)
64  print_err("OOM");
65  ex = nftnl_expr_alloc("nat");
66  if (ex == NULL)
67  print_err("OOM");
68 
69  nftnl_expr_set_u32(ex, NFTNL_EXPR_NAT_TYPE, 0x1234568);
70  nftnl_expr_set_u32(ex, NFTNL_EXPR_NAT_FAMILY, 0x3456721);
71  nftnl_expr_set_u32(ex, NFTNL_EXPR_NAT_REG_ADDR_MIN, 0x1452638);
72  nftnl_expr_set_u32(ex, NFTNL_EXPR_NAT_REG_ADDR_MAX, 0x5134682);
73  nftnl_expr_set_u32(ex, NFTNL_EXPR_NAT_REG_PROTO_MIN, 0x6124385);
74  nftnl_expr_set_u32(ex, NFTNL_EXPR_NAT_REG_PROTO_MAX, 0x2153846);
75  nftnl_expr_set_u32(ex, NFTNL_EXPR_NAT_FLAGS, 0x4213683);
76 
77  nftnl_rule_add_expr(a, ex);
78 
79  nlh = nftnl_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
80  nftnl_rule_nlmsg_build_payload(nlh, a);
81 
82  if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
83  print_err("parsing problems");
84 
85  iter_a = nftnl_expr_iter_create(a);
86  iter_b = nftnl_expr_iter_create(b);
87  if (iter_a == NULL || iter_b == NULL)
88  print_err("OOM");
89 
90  rule_a = nftnl_expr_iter_next(iter_a);
91  rule_b = nftnl_expr_iter_next(iter_b);
92  if (rule_a == NULL || rule_b == NULL)
93  print_err("OOM");
94 
95  cmp_nftnl_expr(rule_a, rule_b);
96 
97  if (nftnl_expr_iter_next(iter_a) != NULL ||
98  nftnl_expr_iter_next(iter_b) != NULL)
99  print_err("More 1 expr.");
100 
101  nftnl_expr_iter_destroy(iter_a);
102  nftnl_expr_iter_destroy(iter_b);
103  nftnl_rule_free(a);
104  nftnl_rule_free(b);
105 
106  if (!test_ok)
107  exit(EXIT_FAILURE);
108 
109  printf("%s: \033[32mOK\e[0m\n", argv[0]);
110  return EXIT_SUCCESS;
111 }