libnftnl  1.0.2
nft-chain-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 <linux/netfilter/nf_tables.h>
16 #include <libnftnl/chain.h>
17 
18 static int test_ok = 1;
19 
20 static void print_err(const char *msg)
21 {
22  test_ok = 0;
23  printf("\033[31mERROR:\e[0m %s\n", msg);
24 }
25 
26 static void cmp_nft_chain(struct nft_chain *a, struct nft_chain *b)
27 {
28 
29  if (strcmp(nft_chain_attr_get_str(a, NFT_CHAIN_ATTR_NAME),
30  nft_chain_attr_get_str(b, NFT_CHAIN_ATTR_NAME)) != 0)
31  print_err("Chain name mismatches");
32  if (strcmp(nft_chain_attr_get_str(a, NFT_CHAIN_ATTR_TABLE),
33  nft_chain_attr_get_str(b, NFT_CHAIN_ATTR_TABLE)) != 0)
34  print_err("Chain table mismatches");
35  if (nft_chain_attr_get_u32(a, NFT_CHAIN_ATTR_FAMILY) !=
36  nft_chain_attr_get_u32(b, NFT_CHAIN_ATTR_FAMILY))
37  print_err("Chain family mismatches");
38  if (nft_chain_attr_get_u32(a, NFT_CHAIN_ATTR_POLICY) !=
39  nft_chain_attr_get_u32(b, NFT_CHAIN_ATTR_POLICY))
40  print_err("Chain policy mismatches");
41  if (nft_chain_attr_get_u32(a, NFT_CHAIN_ATTR_HOOKNUM) !=
42  nft_chain_attr_get_u32(b, NFT_CHAIN_ATTR_HOOKNUM))
43  print_err("Chain hooknum mismatches");
44  if (nft_chain_attr_get_s32(a, NFT_CHAIN_ATTR_PRIO) !=
45  nft_chain_attr_get_s32(b, NFT_CHAIN_ATTR_PRIO))
46  print_err("Chain Prio mismatches");
47  if (nft_chain_attr_get_u32(a, NFT_CHAIN_ATTR_USE) !=
48  nft_chain_attr_get_u32(b, NFT_CHAIN_ATTR_USE))
49  print_err("Chain use mismatches");
50  if (nft_chain_attr_get_u64(a, NFT_CHAIN_ATTR_PACKETS) !=
51  nft_chain_attr_get_u64(b, NFT_CHAIN_ATTR_PACKETS))
52  print_err("Chain packets mismatches");
53  if (nft_chain_attr_get_u64(a, NFT_CHAIN_ATTR_BYTES) !=
54  nft_chain_attr_get_u64(b, NFT_CHAIN_ATTR_BYTES))
55  print_err("Chain bytes mismatches");
56  if (nft_chain_attr_get_u64(a, NFT_CHAIN_ATTR_HANDLE) !=
57  nft_chain_attr_get_u64(b, NFT_CHAIN_ATTR_HANDLE))
58  print_err("Chain handle mismatches");
59  if (strcmp(nft_chain_attr_get_str(a, NFT_CHAIN_ATTR_TYPE),
60  nft_chain_attr_get_str(b, NFT_CHAIN_ATTR_TYPE)) != 0)
61  print_err("Chain type mismatches");
62 }
63 
64 int main(int argc, char *argv[])
65 {
66  struct nft_chain *a, *b;
67  char buf[4096];
68  struct nlmsghdr *nlh;
69 
70  a = nft_chain_alloc();
71  b = nft_chain_alloc();
72  if (a == NULL || b == NULL)
73  print_err("OOM");
74 
75  nft_chain_attr_set_str(a, NFT_CHAIN_ATTR_NAME, "test");
76  nft_chain_attr_set_u32(a, NFT_CHAIN_ATTR_FAMILY, AF_INET);
77  nft_chain_attr_set_str(a, NFT_CHAIN_ATTR_TABLE, "Table");
78  nft_chain_attr_set_u32(a, NFT_CHAIN_ATTR_POLICY,0x12345678);
79  nft_chain_attr_set_u32(a, NFT_CHAIN_ATTR_HOOKNUM, 0x12345678);
80  nft_chain_attr_set_s32(a, NFT_CHAIN_ATTR_PRIO, 0x12345678);
81  nft_chain_attr_set_u32(a, NFT_CHAIN_ATTR_USE, 0x12345678 );
82  nft_chain_attr_set_u64(a, NFT_CHAIN_ATTR_PACKETS, 0x1234567812345678);
83  nft_chain_attr_set_u64(a, NFT_CHAIN_ATTR_BYTES, 0x1234567812345678);
84  nft_chain_attr_set_u64(a, NFT_CHAIN_ATTR_HANDLE, 0x1234567812345678);
85  nft_chain_attr_set_str(a, NFT_CHAIN_ATTR_TYPE, "Prueba");
86 
87  /* cmd extracted from include/linux/netfilter/nf_tables.h */
88  nlh = nft_chain_nlmsg_build_hdr(buf, NFT_MSG_NEWCHAIN, AF_INET,
89  0, 1234);
90  nft_chain_nlmsg_build_payload(nlh, a);
91 
92  if (nft_chain_nlmsg_parse(nlh, b) < 0)
93  print_err("parsing problems");
94 
95  cmp_nft_chain(a, b);
96 
97  nft_chain_free(a);
98  nft_chain_free(b);
99 
100  if (!test_ok)
101  exit(EXIT_FAILURE);
102 
103  printf("%s: \033[32mOK\e[0m\n", argv[0]);
104  return EXIT_SUCCESS;
105 
106 }