libnftnl  1.2.6
nft-expr_byteorder-test.c
1 /*
2  * (C) 2013 by Ana Rey Botello <anarey@gmail.com>
3  *
4  * This program is free software; you can redistribute it and/or modify it
5  * under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (at your option) any later version.
8  *
9  */
10 
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h>
14 
15 #include <netinet/in.h>
16 #include <netinet/ip.h>
17 #include <linux/netfilter/nf_tables.h>
18 #include <libmnl/libmnl.h>
19 #include <libnftnl/rule.h>
20 #include <libnftnl/expr.h>
21 
22 static int test_ok = 1;
23 
24 static void print_err(const char *msg)
25 {
26  test_ok = 0;
27  printf("\033[31mERROR:\e[0m %s\n", msg);
28 }
29 
30 static void cmp_nftnl_expr(struct nftnl_expr *rule_a,
31  struct nftnl_expr *rule_b)
32 {
33  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BYTEORDER_DREG) !=
34  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BYTEORDER_DREG))
35  print_err("Expr NFTNL_EXPR_BYTEORDER_DREG mismatches");
36  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BYTEORDER_SREG) !=
37  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BYTEORDER_SREG))
38  print_err("Expr NFTNL_EXPR_BYTEORDER_SREG mismatches");
39  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BYTEORDER_OP) !=
40  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BYTEORDER_OP))
41  print_err("Expr NFTNL_EXPR_BYTEORDER_OP mismatches");
42  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BYTEORDER_LEN) !=
43  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BYTEORDER_LEN))
44  print_err("Expr NFTNL_EXPR_BYTEORDER_DREG mismatches");
45  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BYTEORDER_SIZE) !=
46  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BYTEORDER_SIZE))
47  print_err("Expr NFTNL_EXPR_BITWISE_SIZE mismatches");
48 }
49 
50 int main(int argc, char *argv[])
51 {
52  struct nftnl_rule *a, *b;
53  struct nftnl_expr *ex;
54  struct nlmsghdr *nlh;
55  char buf[4096];
56  struct nftnl_expr_iter *iter_a, *iter_b;
57  struct nftnl_expr *rule_a, *rule_b;
58 
59  a = nftnl_rule_alloc();
60  b = nftnl_rule_alloc();
61  if (a == NULL || b == NULL)
62  print_err("OOM");
63  ex = nftnl_expr_alloc("byteorder");
64  if (ex == NULL)
65  print_err("OOM");
66 
67  nftnl_expr_set_u32(ex, NFTNL_EXPR_BYTEORDER_SREG, 0x12345678);
68  nftnl_expr_set_u32(ex, NFTNL_EXPR_BYTEORDER_DREG, 0x12345678);
69  nftnl_expr_set_u32(ex, NFTNL_EXPR_BYTEORDER_OP, 0x12345678);
70  nftnl_expr_set_u32(ex, NFTNL_EXPR_BYTEORDER_LEN, 0x12345678);
71  nftnl_expr_set_u32(ex, NFTNL_EXPR_BYTEORDER_SIZE, 0x12345678);
72 
73  nftnl_rule_add_expr(a, ex);
74 
75  nlh = nftnl_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
76  nftnl_rule_nlmsg_build_payload(nlh, a);
77 
78  if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
79  print_err("parsing problems");
80 
81  iter_a = nftnl_expr_iter_create(a);
82  iter_b = nftnl_expr_iter_create(b);
83  if (iter_a == NULL || iter_b == NULL)
84  print_err("OOM");
85 
86  rule_a = nftnl_expr_iter_next(iter_a);
87  rule_b = nftnl_expr_iter_next(iter_b);
88  if (rule_a == NULL || rule_b == NULL)
89  print_err("OOM");
90 
91  cmp_nftnl_expr(rule_a,rule_b);
92 
93  if (nftnl_expr_iter_next(iter_a) != NULL ||
94  nftnl_expr_iter_next(iter_b) != NULL)
95  print_err("More 1 expr.");
96 
97  nftnl_expr_iter_destroy(iter_a);
98  nftnl_expr_iter_destroy(iter_b);
99  nftnl_rule_free(a);
100  nftnl_rule_free(b);
101 
102  if (!test_ok)
103  exit(EXIT_FAILURE);
104 
105  printf("%s: \033[32mOK\e[0m\n", argv[0]);
106  return EXIT_SUCCESS;
107 }