libnftnl 1.2.6
nft-expr_payload-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#include <netinet/in.h>
15#include <netinet/ip.h>
16
17#include <linux/netfilter/nf_tables.h>
18#include <linux/netfilter/xt_iprange.h>
19#include <libmnl/libmnl.h>
20#include <libnftnl/rule.h>
21#include <libnftnl/expr.h>
22
23static int test_ok = 1;
24
25static void print_err(const char *msg)
26{
27 test_ok = 0;
28 printf("\033[31mERROR:\e[0m %s\n", msg);
29}
30
31static void cmp_nftnl_expr(struct nftnl_expr *rule_a,
32 struct nftnl_expr *rule_b)
33{
34 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_PAYLOAD_DREG) !=
35 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_PAYLOAD_DREG))
36 print_err("Expr NFTNL_EXPR_PAYLOAD_DREG mismatches");
37 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_PAYLOAD_BASE) !=
38 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_PAYLOAD_BASE))
39 print_err("Expr NFTNL_EXPR_PAYLOAD_BASE mismatches");
40 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_PAYLOAD_OFFSET) !=
41 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_PAYLOAD_OFFSET))
42 print_err("Expr NFTNL_EXPR_PAYLOAD_OFFSET mismatches");
43 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_PAYLOAD_LEN) !=
44 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_PAYLOAD_LEN))
45 print_err("Expr NFTNL_EXPR_PAYLOAD_LEN mismatches");
46}
47
48int main(int argc, char *argv[])
49{
50 struct nftnl_rule *a, *b;
51 struct nftnl_expr *ex;
52 struct nlmsghdr *nlh;
53 char buf[4096];
54 struct nftnl_expr_iter *iter_a, *iter_b;
55 struct nftnl_expr *rule_a, *rule_b;
56
57 a = nftnl_rule_alloc();
58 b = nftnl_rule_alloc();
59 if (a == NULL || b == NULL)
60 print_err("OOM");
61 ex = nftnl_expr_alloc("payload");
62 if (ex == NULL)
63 print_err("OOM");
64
65 nftnl_expr_set_u32(ex, NFTNL_EXPR_PAYLOAD_DREG, 0x1234568);
66 nftnl_expr_set_u32(ex, NFTNL_EXPR_PAYLOAD_BASE, 0x78123456);
67 nftnl_expr_set_u32(ex, NFTNL_EXPR_PAYLOAD_OFFSET, 0x56781234);
68 nftnl_expr_set_u32(ex, NFTNL_EXPR_PAYLOAD_LEN, 0x78561234);
69
70 nftnl_rule_add_expr(a, ex);
71
72 nlh = nftnl_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
73 nftnl_rule_nlmsg_build_payload(nlh, a);
74 if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
75 print_err("parsing problems");
76
77 iter_a = nftnl_expr_iter_create(a);
78 iter_b = nftnl_expr_iter_create(b);
79 if (iter_a == NULL || iter_b == NULL)
80 print_err("OOM");
81
82 rule_a = nftnl_expr_iter_next(iter_a);
83 rule_b = nftnl_expr_iter_next(iter_b);
84 if (rule_a == NULL || rule_b == NULL)
85 print_err("OOM");
86
87 cmp_nftnl_expr(rule_a, rule_b);
88
89 if (nftnl_expr_iter_next(iter_a) != NULL ||
90 nftnl_expr_iter_next(iter_b) != NULL)
91 print_err("More 1 expr.");
92
93 nftnl_expr_iter_destroy(iter_a);
94 nftnl_expr_iter_destroy(iter_b);
95 nftnl_rule_free(a);
96 nftnl_rule_free(b);
97
98 if (!test_ok)
99 exit(EXIT_FAILURE);
100
101 printf("%s: \033[32mOK\e[0m\n", argv[0]);
102 return EXIT_SUCCESS;
103}