libnftnl 1.2.9
nft-expr_range-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
17static int test_ok = 1;
18
19static void print_err(const char *msg)
20{
21 test_ok = 0;
22 printf("\033[31mERROR:\e[0m %s\n", msg);
23}
24
25static void range_nftnl_expr(struct nftnl_expr *rule_a,
26 struct nftnl_expr *rule_b)
27{
28 uint32_t data_a, data_b;
29
30 nftnl_expr_get(rule_a, NFTNL_EXPR_RANGE_FROM_DATA, &data_a);
31 nftnl_expr_get(rule_b, NFTNL_EXPR_RANGE_FROM_DATA, &data_b);
32 if (data_a != data_b)
33 print_err("Size of NFTNL_EXPR_RANGE_FROM_DATA mismatches");
34 nftnl_expr_get(rule_a, NFTNL_EXPR_RANGE_TO_DATA, &data_a);
35 nftnl_expr_get(rule_b, NFTNL_EXPR_RANGE_TO_DATA, &data_b);
36 if (data_a != data_b)
37 print_err("Size of NFTNL_EXPR_RANGE_TO_DATA mismatches");
38 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_RANGE_SREG) !=
39 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_RANGE_SREG))
40 print_err("Expr NFTNL_EXPR_RANGE_SREG mismatches");
41 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_RANGE_OP) !=
42 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_RANGE_OP))
43 print_err("Expr NFTNL_EXPR_RANGE_OP mismatches");
44}
45
46int main(int argc, char *argv[])
47{
48 struct nftnl_rule *a, *b;
49 struct nftnl_expr *ex;
50 struct nlmsghdr *nlh;
51 char buf[4096];
52 struct nftnl_expr_iter *iter_a, *iter_b;
53 struct nftnl_expr *rule_a, *rule_b;
54 uint32_t data_a = 0x01010101, data_b = 0x02020202;
55
56 a = nftnl_rule_alloc();
57 b = nftnl_rule_alloc();
58 if (a == NULL || b == NULL)
59 print_err("OOM");
60 ex = nftnl_expr_alloc("range");
61 if (ex == NULL)
62 print_err("OOM");
63
64 nftnl_expr_set(ex, NFTNL_EXPR_RANGE_FROM_DATA,
65 &data_a, sizeof(data_a));
66 nftnl_expr_set(ex, NFTNL_EXPR_RANGE_TO_DATA,
67 &data_b, sizeof(data_b));
68 nftnl_expr_set_u32(ex, NFTNL_EXPR_RANGE_SREG, 0x12345678);
69 nftnl_expr_set_u32(ex, NFTNL_EXPR_RANGE_OP, 0x78123456);
70
71 nftnl_rule_add_expr(a, ex);
72
73 nlh = nftnl_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
74 nftnl_rule_nlmsg_build_payload(nlh, a);
75
76 if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
77 print_err("parsing problems");
78
79 iter_a = nftnl_expr_iter_create(a);
80 iter_b = nftnl_expr_iter_create(b);
81 if (iter_a == NULL || iter_b == NULL)
82 print_err("OOM");
83 rule_a = nftnl_expr_iter_next(iter_a);
84 rule_b = nftnl_expr_iter_next(iter_b);
85 if (rule_a == NULL || rule_b == NULL)
86 print_err("OOM");
87
88 range_nftnl_expr(rule_a, rule_b);
89
90 if (nftnl_expr_iter_next(iter_a) != NULL ||
91 nftnl_expr_iter_next(iter_b) != NULL)
92 print_err("More 1 expr.");
93
94 nftnl_expr_iter_destroy(iter_a);
95 nftnl_expr_iter_destroy(iter_b);
96 nftnl_rule_free(a);
97 nftnl_rule_free(b);
98
99 if (!test_ok)
100 exit(EXIT_FAILURE);
101
102 printf("%s: \033[32mOK\e[0m\n", argv[0]);
103 return EXIT_SUCCESS;
104}