libnftnl 1.2.6
nft-expr_target-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 print_err2(const char *msg, uint32_t a, uint32_t b)
31{
32 test_ok = 0;
33 printf("\033[31mERROR:\e[0m %s size a: %d b: %d \n",msg, a, b);
34}
35
36static void cmp_nftnl_expr(struct nftnl_expr *rule_a,
37 struct nftnl_expr *rule_b)
38{
39 uint32_t lena, lenb;
40
41 if (strcmp(nftnl_expr_get_str(rule_a, NFTNL_EXPR_TG_NAME),
42 nftnl_expr_get_str(rule_b, NFTNL_EXPR_TG_NAME)) != 0)
43 print_err("Expr NFTNL_EXPR_TG_NAME mismatches");
44 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_TG_REV) !=
45 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_TG_REV))
46 print_err("Expr NFTNL_EXPR_TG_REV mismatches");
47 nftnl_expr_get(rule_a, NFTNL_EXPR_TG_INFO, &lena);
48 nftnl_expr_get(rule_b, NFTNL_EXPR_TG_INFO, &lenb);
49 if (lena != lenb)
50 print_err2("Expr NFTNL_EXPR_TG_INFO size mismatches", lena, lenb);
51}
52
53int main(int argc, char *argv[])
54{
55 struct nftnl_rule *a, *b;
56 struct nftnl_expr *ex;
57 struct nlmsghdr *nlh;
58 char buf[4096];
59 struct nftnl_expr_iter *iter_a, *iter_b;
60 struct nftnl_expr *rule_a, *rule_b;
61 char data[16] = "0123456789abcdef";
62
63 a = nftnl_rule_alloc();
64 b = nftnl_rule_alloc();
65 if (a == NULL || b == NULL)
66 print_err("OOM");
67
68 ex = nftnl_expr_alloc("target");
69 if (ex == NULL)
70 print_err("OOM");
71
72 nftnl_expr_set(ex, NFTNL_EXPR_TG_NAME, "test", strlen("test"));
73 nftnl_expr_set_u32(ex, NFTNL_EXPR_TG_REV, 0x56781234);
74 nftnl_expr_set(ex, NFTNL_EXPR_TG_INFO, strdup(data), sizeof(data));
75 nftnl_rule_add_expr(a, ex);
76
77 nlh = nftnl_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
78 nftnl_rule_nlmsg_build_payload(nlh, a);
79
80 if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
81 print_err("parsing problems");
82
83 iter_a = nftnl_expr_iter_create(a);
84 iter_b = nftnl_expr_iter_create(b);
85 if (iter_a == NULL || iter_b == NULL)
86 print_err("OOM");
87
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 cmp_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 printf("%s: \033[32mOK\e[0m\n", argv[0]);
107 return EXIT_SUCCESS;
108}