libnftnl  1.2.9
nft-expr_byteorder-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 <libmnl/libmnl.h>
14 #include <libnftnl/rule.h>
15 #include <libnftnl/expr.h>
16 
17 static int test_ok = 1;
18 
19 static void print_err(const char *msg)
20 {
21  test_ok = 0;
22  printf("\033[31mERROR:\e[0m %s\n", msg);
23 }
24 
25 static void cmp_nftnl_expr(struct nftnl_expr *rule_a,
26  struct nftnl_expr *rule_b)
27 {
28  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BYTEORDER_DREG) !=
29  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BYTEORDER_DREG))
30  print_err("Expr NFTNL_EXPR_BYTEORDER_DREG mismatches");
31  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BYTEORDER_SREG) !=
32  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BYTEORDER_SREG))
33  print_err("Expr NFTNL_EXPR_BYTEORDER_SREG mismatches");
34  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BYTEORDER_OP) !=
35  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BYTEORDER_OP))
36  print_err("Expr NFTNL_EXPR_BYTEORDER_OP mismatches");
37  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BYTEORDER_LEN) !=
38  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BYTEORDER_LEN))
39  print_err("Expr NFTNL_EXPR_BYTEORDER_DREG mismatches");
40  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BYTEORDER_SIZE) !=
41  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BYTEORDER_SIZE))
42  print_err("Expr NFTNL_EXPR_BITWISE_SIZE mismatches");
43 }
44 
45 int main(int argc, char *argv[])
46 {
47  struct nftnl_rule *a, *b;
48  struct nftnl_expr *ex;
49  struct nlmsghdr *nlh;
50  char buf[4096];
51  struct nftnl_expr_iter *iter_a, *iter_b;
52  struct nftnl_expr *rule_a, *rule_b;
53 
54  a = nftnl_rule_alloc();
55  b = nftnl_rule_alloc();
56  if (a == NULL || b == NULL)
57  print_err("OOM");
58  ex = nftnl_expr_alloc("byteorder");
59  if (ex == NULL)
60  print_err("OOM");
61 
62  nftnl_expr_set_u32(ex, NFTNL_EXPR_BYTEORDER_SREG, 0x12345678);
63  nftnl_expr_set_u32(ex, NFTNL_EXPR_BYTEORDER_DREG, 0x12345678);
64  nftnl_expr_set_u32(ex, NFTNL_EXPR_BYTEORDER_OP, 0x12345678);
65  nftnl_expr_set_u32(ex, NFTNL_EXPR_BYTEORDER_LEN, 0x12345678);
66  nftnl_expr_set_u32(ex, NFTNL_EXPR_BYTEORDER_SIZE, 0x12345678);
67 
68  nftnl_rule_add_expr(a, ex);
69 
70  nlh = nftnl_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
71  nftnl_rule_nlmsg_build_payload(nlh, a);
72 
73  if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
74  print_err("parsing problems");
75 
76  iter_a = nftnl_expr_iter_create(a);
77  iter_b = nftnl_expr_iter_create(b);
78  if (iter_a == NULL || iter_b == NULL)
79  print_err("OOM");
80 
81  rule_a = nftnl_expr_iter_next(iter_a);
82  rule_b = nftnl_expr_iter_next(iter_b);
83  if (rule_a == NULL || rule_b == NULL)
84  print_err("OOM");
85 
86  cmp_nftnl_expr(rule_a,rule_b);
87 
88  if (nftnl_expr_iter_next(iter_a) != NULL ||
89  nftnl_expr_iter_next(iter_b) != NULL)
90  print_err("More 1 expr.");
91 
92  nftnl_expr_iter_destroy(iter_a);
93  nftnl_expr_iter_destroy(iter_b);
94  nftnl_rule_free(a);
95  nftnl_rule_free(b);
96 
97  if (!test_ok)
98  exit(EXIT_FAILURE);
99 
100  printf("%s: \033[32mOK\e[0m\n", argv[0]);
101  return EXIT_SUCCESS;
102 }