libnftnl 1.2.6
nft-expr_range-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
22static int test_ok = 1;
23
24static void print_err(const char *msg)
25{
26 test_ok = 0;
27 printf("\033[31mERROR:\e[0m %s\n", msg);
28}
29
30static void range_nftnl_expr(struct nftnl_expr *rule_a,
31 struct nftnl_expr *rule_b)
32{
33 uint32_t data_a, data_b;
34
35 nftnl_expr_get(rule_a, NFTNL_EXPR_RANGE_FROM_DATA, &data_a);
36 nftnl_expr_get(rule_b, NFTNL_EXPR_RANGE_FROM_DATA, &data_b);
37 if (data_a != data_b)
38 print_err("Size of NFTNL_EXPR_RANGE_FROM_DATA mismatches");
39 nftnl_expr_get(rule_a, NFTNL_EXPR_RANGE_TO_DATA, &data_a);
40 nftnl_expr_get(rule_b, NFTNL_EXPR_RANGE_TO_DATA, &data_b);
41 if (data_a != data_b)
42 print_err("Size of NFTNL_EXPR_RANGE_TO_DATA mismatches");
43 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_RANGE_SREG) !=
44 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_RANGE_SREG))
45 print_err("Expr NFTNL_EXPR_RANGE_SREG mismatches");
46 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_RANGE_OP) !=
47 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_RANGE_OP))
48 print_err("Expr NFTNL_EXPR_RANGE_OP mismatches");
49}
50
51int 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 uint32_t data_a = 0x01010101, data_b = 0x02020202;
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("range");
66 if (ex == NULL)
67 print_err("OOM");
68
69 nftnl_expr_set(ex, NFTNL_EXPR_RANGE_FROM_DATA,
70 &data_a, sizeof(data_a));
71 nftnl_expr_set(ex, NFTNL_EXPR_RANGE_TO_DATA,
72 &data_b, sizeof(data_b));
73 nftnl_expr_set_u32(ex, NFTNL_EXPR_RANGE_SREG, 0x12345678);
74 nftnl_expr_set_u32(ex, NFTNL_EXPR_RANGE_OP, 0x78123456);
75
76 nftnl_rule_add_expr(a, ex);
77
78 nlh = nftnl_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
79 nftnl_rule_nlmsg_build_payload(nlh, a);
80
81 if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
82 print_err("parsing problems");
83
84 iter_a = nftnl_expr_iter_create(a);
85 iter_b = nftnl_expr_iter_create(b);
86 if (iter_a == NULL || iter_b == NULL)
87 print_err("OOM");
88 rule_a = nftnl_expr_iter_next(iter_a);
89 rule_b = nftnl_expr_iter_next(iter_b);
90 if (rule_a == NULL || rule_b == NULL)
91 print_err("OOM");
92
93 range_nftnl_expr(rule_a, rule_b);
94
95 if (nftnl_expr_iter_next(iter_a) != NULL ||
96 nftnl_expr_iter_next(iter_b) != NULL)
97 print_err("More 1 expr.");
98
99 nftnl_expr_iter_destroy(iter_a);
100 nftnl_expr_iter_destroy(iter_b);
101 nftnl_rule_free(a);
102 nftnl_rule_free(b);
103
104 if (!test_ok)
105 exit(EXIT_FAILURE);
106
107 printf("%s: \033[32mOK\e[0m\n", argv[0]);
108 return EXIT_SUCCESS;
109}