libnftnl  1.2.2
nft-expr_limit-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 
19 #include <libmnl/libmnl.h>
20 #include <libnftnl/rule.h>
21 #include <libnftnl/expr.h>
22 
23 static int test_ok = 1;
24 
25 static void print_err(const char *msg)
26 {
27  test_ok = 0;
28  printf("\033[31mERROR:\e[0m %s\n", msg);
29 }
30 
31 static void cmp_nftnl_expr(struct nftnl_expr *rule_a,
32  struct nftnl_expr *rule_b)
33 {
34  if (nftnl_expr_get_u64(rule_a, NFTNL_EXPR_LIMIT_RATE) !=
35  nftnl_expr_get_u64(rule_b, NFTNL_EXPR_LIMIT_RATE))
36  print_err("Expr CTR_BYTES mismatches");
37  if (nftnl_expr_get_u64(rule_a, NFTNL_EXPR_LIMIT_UNIT) !=
38  nftnl_expr_get_u64(rule_b, NFTNL_EXPR_LIMIT_UNIT))
39  print_err("Expr CTR_PACKET mismatches");
40  if (nftnl_expr_get_u64(rule_a, NFTNL_EXPR_LIMIT_BURST) !=
41  nftnl_expr_get_u64(rule_b, NFTNL_EXPR_LIMIT_BURST))
42  print_err("Expr CTR_PACKET mismatches");
43  if (nftnl_expr_get_u64(rule_a, NFTNL_EXPR_LIMIT_TYPE) !=
44  nftnl_expr_get_u64(rule_b, NFTNL_EXPR_LIMIT_TYPE))
45  print_err("Expr TYPE mismatches");
46  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_LIMIT_FLAGS) !=
47  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_LIMIT_FLAGS))
48  print_err("Expr FLAGS mismatches");
49 }
50 
51 int main(int argc, char *argv[])
52 {
53  struct nftnl_rule *a, *b;
54  struct nftnl_expr *ex;
55  struct nlmsghdr *nlh;
56  char buf[4096];
57  struct nftnl_expr_iter *iter_a, *iter_b;
58  struct nftnl_expr *rule_a, *rule_b;
59 
60  a = nftnl_rule_alloc();
61  b = nftnl_rule_alloc();
62  if (a == NULL || b == NULL)
63  print_err("OOM");
64  ex = nftnl_expr_alloc("limit");
65  if (ex == NULL)
66  print_err("OOM");
67 
68  nftnl_expr_set_u64(ex, NFTNL_EXPR_LIMIT_RATE, 0x123456789abcdef0);
69  nftnl_expr_set_u64(ex, NFTNL_EXPR_LIMIT_UNIT, 0xf0123456789abcde);
70  nftnl_expr_set_u32(ex, NFTNL_EXPR_LIMIT_BURST, 0x89123456);
71  nftnl_expr_set_u32(ex, NFTNL_EXPR_LIMIT_TYPE, 0xdef01234);
72  nftnl_expr_set_u32(ex, NFTNL_EXPR_LIMIT_FLAGS, 0x34def012);
73 
74  nftnl_rule_add_expr(a, ex);
75 
76  nlh = nftnl_rule_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
77  nftnl_rule_nlmsg_build_payload(nlh, a);
78 
79  if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
80  print_err("parsing problems");
81 
82  iter_a = nftnl_expr_iter_create(a);
83  iter_b = nftnl_expr_iter_create(b);
84  if (iter_a == NULL || iter_b == NULL)
85  print_err("OOM");
86 
87  rule_a = nftnl_expr_iter_next(iter_a);
88  rule_b = nftnl_expr_iter_next(iter_b);
89  if (rule_a == NULL || rule_b == NULL)
90  print_err("OOM");
91 
92  cmp_nftnl_expr(rule_a, rule_b);
93 
94  if (nftnl_expr_iter_next(iter_a) != NULL ||
95  nftnl_expr_iter_next(iter_b) != NULL)
96  print_err("More 1 expr.");
97 
98  nftnl_expr_iter_destroy(iter_a);
99  nftnl_expr_iter_destroy(iter_b);
100  nftnl_rule_free(a);
101  nftnl_rule_free(b);
102 
103  if (!test_ok)
104  exit(EXIT_FAILURE);
105 
106  printf("%s: \033[32mOK\e[0m\n", argv[0]);
107  return EXIT_SUCCESS;
108 }