libnftnl  1.2.9
nft-expr_log-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 #include <netinet/in.h>
10 #include <netinet/ip.h>
11 
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  printf("\033[31mERROR:\e[0m %s\n", msg);
22  test_ok = 0;
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_LOG_SNAPLEN) !=
29  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_LOG_SNAPLEN))
30  print_err("Expr NFTNL_EXPR_LOG_SNAPLEN mismatches");
31  if (nftnl_expr_get_u16(rule_a, NFTNL_EXPR_LOG_GROUP) !=
32  nftnl_expr_get_u16(rule_b, NFTNL_EXPR_LOG_GROUP))
33  print_err("Expr NFTNL_EXPR_LOG_GROUP mismatches");
34  if (nftnl_expr_get_u16(rule_a, NFTNL_EXPR_LOG_QTHRESHOLD) !=
35  nftnl_expr_get_u16(rule_b, NFTNL_EXPR_LOG_QTHRESHOLD))
36  print_err("Expr NFTNL_EXPR_LOG_QTHRESHOLD mismatches");
37  if(strcmp(nftnl_expr_get_str(rule_a, NFTNL_EXPR_LOG_PREFIX),
38  nftnl_expr_get_str(rule_b, NFTNL_EXPR_LOG_PREFIX)) != 0)
39  print_err("Expr NFTNL_EXPR_LOG_PREFIX mismatches");
40 }
41 
42 int main(int argc, char *argv[])
43 {
44  struct nftnl_rule *a, *b;
45  struct nftnl_expr *ex;
46  struct nlmsghdr *nlh;
47  char buf[4096];
48  struct nftnl_expr_iter *iter_a, *iter_b;
49  struct nftnl_expr *rule_a, *rule_b;
50 
51  a = nftnl_rule_alloc();
52  b = nftnl_rule_alloc();
53  if (a == NULL || b == NULL)
54  print_err("OOM");
55  ex = nftnl_expr_alloc("log");
56  if (ex == NULL)
57  print_err("OOM");
58 
59  nftnl_expr_set_u32(ex, NFTNL_EXPR_LOG_SNAPLEN, 0x12345678);
60  nftnl_expr_set_u16(ex, NFTNL_EXPR_LOG_GROUP, 0x1234);
61  nftnl_expr_set_u16(ex, NFTNL_EXPR_LOG_QTHRESHOLD, 0x3412);
62  nftnl_expr_set_str(ex, NFTNL_EXPR_LOG_PREFIX, "test");
63 
64  nftnl_rule_add_expr(a, ex);
65 
66  nlh = nftnl_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
67  nftnl_rule_nlmsg_build_payload(nlh, a);
68  if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
69  print_err("parsing problems");
70 
71  iter_a = nftnl_expr_iter_create(a);
72  iter_b = nftnl_expr_iter_create(b);
73  if (iter_a == NULL || iter_b == NULL)
74  print_err("OOM");
75  rule_a = nftnl_expr_iter_next(iter_a);
76  rule_b = nftnl_expr_iter_next(iter_b);
77  if (rule_a == NULL || rule_b == NULL)
78  print_err("OOM");
79 
80  cmp_nftnl_expr(rule_a, rule_b);
81 
82  if (nftnl_expr_iter_next(iter_a) != NULL ||
83  nftnl_expr_iter_next(iter_b) != NULL)
84  print_err("More 1 expr.");
85 
86  nftnl_expr_iter_destroy(iter_a);
87  nftnl_expr_iter_destroy(iter_b);
88  nftnl_rule_free(a);
89  nftnl_rule_free(b);
90 
91  if (!test_ok)
92  exit(EXIT_FAILURE);
93 
94  printf("%s: \033[32mOK\e[0m\n", argv[0]);
95  return EXIT_SUCCESS;
96 }