libnftnl  1.1.9
nft-expr_bitwise-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 
22 static int test_ok = 1;
23 
24 static void print_err(const char *test, const char *msg)
25 {
26  test_ok = 0;
27  printf("\033[31mERROR:\e[0m [%s] %s\n", test, msg);
28 }
29 
30 static void cmp_nftnl_expr_bool(struct nftnl_expr *rule_a,
31  struct nftnl_expr *rule_b)
32 {
33  uint32_t maska, maskb;
34  uint32_t xora, xorb;
35 
36  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BITWISE_DREG) !=
37  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BITWISE_DREG))
38  print_err("bool", "Expr BITWISE_DREG mismatches");
39  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BITWISE_SREG) !=
40  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BITWISE_SREG))
41  print_err("bool", "Expr BITWISE_SREG mismatches");
42  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BITWISE_OP) !=
43  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BITWISE_OP))
44  print_err("bool", "Expr BITWISE_OP mismatches");
45  if (nftnl_expr_get_u16(rule_a, NFTNL_EXPR_BITWISE_LEN) !=
46  nftnl_expr_get_u16(rule_b, NFTNL_EXPR_BITWISE_LEN))
47  print_err("bool", "Expr BITWISE_LEN mismatches");
48  nftnl_expr_get(rule_a, NFTNL_EXPR_BITWISE_MASK, &maska);
49  nftnl_expr_get(rule_b, NFTNL_EXPR_BITWISE_MASK, &maskb);
50  if (maska != maskb)
51  print_err("bool", "Size of BITWISE_MASK mismatches");
52  nftnl_expr_get(rule_a, NFTNL_EXPR_BITWISE_XOR, &xora);
53  nftnl_expr_get(rule_b, NFTNL_EXPR_BITWISE_XOR, &xorb);
54  if (xora != xorb)
55  print_err("bool", "Size of BITWISE_XOR mismatches");
56 }
57 
58 static void cmp_nftnl_expr_lshift(struct nftnl_expr *rule_a,
59  struct nftnl_expr *rule_b)
60 {
61  uint32_t data_a, data_b;
62 
63  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BITWISE_DREG) !=
64  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BITWISE_DREG))
65  print_err("lshift", "Expr BITWISE_DREG mismatches");
66  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BITWISE_SREG) !=
67  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BITWISE_SREG))
68  print_err("lshift", "Expr BITWISE_SREG mismatches");
69  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BITWISE_OP) !=
70  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BITWISE_OP))
71  print_err("lshift", "Expr BITWISE_OP mismatches");
72  if (nftnl_expr_get_u16(rule_a, NFTNL_EXPR_BITWISE_LEN) !=
73  nftnl_expr_get_u16(rule_b, NFTNL_EXPR_BITWISE_LEN))
74  print_err("lshift", "Expr BITWISE_LEN mismatches");
75  nftnl_expr_get(rule_a, NFTNL_EXPR_BITWISE_DATA, &data_a);
76  nftnl_expr_get(rule_b, NFTNL_EXPR_BITWISE_DATA, &data_b);
77  if (data_a != data_b)
78  print_err("lshift", "Expr BITWISE_DATA mismatches");
79 }
80 
81 static void cmp_nftnl_expr_rshift(struct nftnl_expr *rule_a,
82  struct nftnl_expr *rule_b)
83 {
84  uint32_t data_a, data_b;
85 
86  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BITWISE_DREG) !=
87  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BITWISE_DREG))
88  print_err("rshift", "Expr BITWISE_DREG mismatches");
89  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BITWISE_SREG) !=
90  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BITWISE_SREG))
91  print_err("rshift", "Expr BITWISE_SREG mismatches");
92  if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_BITWISE_OP) !=
93  nftnl_expr_get_u32(rule_b, NFTNL_EXPR_BITWISE_OP))
94  print_err("rshift", "Expr BITWISE_OP mismatches");
95  if (nftnl_expr_get_u16(rule_a, NFTNL_EXPR_BITWISE_LEN) !=
96  nftnl_expr_get_u16(rule_b, NFTNL_EXPR_BITWISE_LEN))
97  print_err("rshift", "Expr BITWISE_LEN mismatches");
98  nftnl_expr_get(rule_a, NFTNL_EXPR_BITWISE_DATA, &data_a);
99  nftnl_expr_get(rule_b, NFTNL_EXPR_BITWISE_DATA, &data_b);
100  if (data_a != data_b)
101  print_err("rshift", "Expr BITWISE_DATA mismatches");
102 }
103 
104 static void test_bool(void)
105 {
106  struct nftnl_rule *a, *b = NULL;
107  struct nftnl_expr *ex = NULL;
108  struct nlmsghdr *nlh;
109  char buf[4096];
110  struct nftnl_expr_iter *iter_a, *iter_b = NULL;
111  struct nftnl_expr *rule_a, *rule_b = NULL;
112  uint32_t mask = 0x01010101;
113  uint32_t xor = 0x12345678;
114 
115  a = nftnl_rule_alloc();
116  b = nftnl_rule_alloc();
117  if (a == NULL || b == NULL)
118  print_err("bool", "OOM");
119  ex = nftnl_expr_alloc("bitwise");
120  if (ex == NULL)
121  print_err("bool", "OOM");
122 
123  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_SREG, 0x12345678);
124  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_DREG, 0x78123456);
125  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_OP, NFT_BITWISE_BOOL);
126  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_LEN, 0x56781234);
127  nftnl_expr_set(ex, NFTNL_EXPR_BITWISE_MASK, &mask, sizeof(mask));
128  nftnl_expr_set(ex, NFTNL_EXPR_BITWISE_XOR, &xor, sizeof(xor));
129 
130  nftnl_rule_add_expr(a, ex);
131 
132  nlh = nftnl_rule_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
133  nftnl_rule_nlmsg_build_payload(nlh, a);
134 
135  if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
136  print_err("bool", "parsing problems");
137 
138  iter_a = nftnl_expr_iter_create(a);
139  iter_b = nftnl_expr_iter_create(b);
140  if (iter_a == NULL || iter_b == NULL)
141  print_err("bool", "OOM");
142 
143  rule_a = nftnl_expr_iter_next(iter_a);
144  rule_b = nftnl_expr_iter_next(iter_b);
145  if (rule_a == NULL || rule_b == NULL)
146  print_err("bool", "OOM");
147 
148  if (nftnl_expr_iter_next(iter_a) != NULL ||
149  nftnl_expr_iter_next(iter_b) != NULL)
150  print_err("bool", "More 1 expr.");
151 
152  nftnl_expr_iter_destroy(iter_a);
153  nftnl_expr_iter_destroy(iter_b);
154 
155  cmp_nftnl_expr_bool(rule_a,rule_b);
156 
157  nftnl_rule_free(a);
158  nftnl_rule_free(b);
159 }
160 
161 static void test_lshift(void)
162 {
163  struct nftnl_rule *a, *b = NULL;
164  struct nftnl_expr *ex = NULL;
165  struct nlmsghdr *nlh;
166  char buf[4096];
167  struct nftnl_expr_iter *iter_a, *iter_b = NULL;
168  struct nftnl_expr *rule_a, *rule_b = NULL;
169 
170  a = nftnl_rule_alloc();
171  b = nftnl_rule_alloc();
172  if (a == NULL || b == NULL)
173  print_err("lshift", "OOM");
174  ex = nftnl_expr_alloc("bitwise");
175  if (ex == NULL)
176  print_err("lshift", "OOM");
177 
178  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_SREG, 0x12345678);
179  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_DREG, 0x78123456);
180  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_OP, NFT_BITWISE_LSHIFT);
181  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_LEN, 0x56781234);
182  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_DATA, 13);
183 
184  nftnl_rule_add_expr(a, ex);
185 
186  nlh = nftnl_rule_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
187  nftnl_rule_nlmsg_build_payload(nlh, a);
188 
189  if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
190  print_err("lshift", "parsing problems");
191 
192  iter_a = nftnl_expr_iter_create(a);
193  iter_b = nftnl_expr_iter_create(b);
194  if (iter_a == NULL || iter_b == NULL)
195  print_err("lshift", "OOM");
196 
197  rule_a = nftnl_expr_iter_next(iter_a);
198  rule_b = nftnl_expr_iter_next(iter_b);
199  if (rule_a == NULL || rule_b == NULL)
200  print_err("lshift", "OOM");
201 
202  if (nftnl_expr_iter_next(iter_a) != NULL ||
203  nftnl_expr_iter_next(iter_b) != NULL)
204  print_err("lshift", "More 1 expr.");
205 
206  nftnl_expr_iter_destroy(iter_a);
207  nftnl_expr_iter_destroy(iter_b);
208 
209  cmp_nftnl_expr_lshift(rule_a,rule_b);
210 
211  nftnl_rule_free(a);
212  nftnl_rule_free(b);
213 }
214 
215 static void test_rshift(void)
216 {
217  struct nftnl_rule *a, *b = NULL;
218  struct nftnl_expr *ex = NULL;
219  struct nlmsghdr *nlh;
220  char buf[4096];
221  struct nftnl_expr_iter *iter_a, *iter_b = NULL;
222  struct nftnl_expr *rule_a, *rule_b = NULL;
223 
224  a = nftnl_rule_alloc();
225  b = nftnl_rule_alloc();
226  if (a == NULL || b == NULL)
227  print_err("rshift", "OOM");
228  ex = nftnl_expr_alloc("bitwise");
229  if (ex == NULL)
230  print_err("rshift", "OOM");
231 
232  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_SREG, 0x12345678);
233  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_DREG, 0x78123456);
234  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_OP, NFT_BITWISE_RSHIFT);
235  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_LEN, 0x56781234);
236  nftnl_expr_set_u32(ex, NFTNL_EXPR_BITWISE_DATA, 17);
237 
238  nftnl_rule_add_expr(a, ex);
239 
240  nlh = nftnl_rule_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
241  nftnl_rule_nlmsg_build_payload(nlh, a);
242 
243  if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
244  print_err("rshift", "parsing problems");
245 
246  iter_a = nftnl_expr_iter_create(a);
247  iter_b = nftnl_expr_iter_create(b);
248  if (iter_a == NULL || iter_b == NULL)
249  print_err("rshift", "OOM");
250 
251  rule_a = nftnl_expr_iter_next(iter_a);
252  rule_b = nftnl_expr_iter_next(iter_b);
253  if (rule_a == NULL || rule_b == NULL)
254  print_err("rshift", "OOM");
255 
256  if (nftnl_expr_iter_next(iter_a) != NULL ||
257  nftnl_expr_iter_next(iter_b) != NULL)
258  print_err("rshift", "More 1 expr.");
259 
260  nftnl_expr_iter_destroy(iter_a);
261  nftnl_expr_iter_destroy(iter_b);
262 
263  cmp_nftnl_expr_rshift(rule_a,rule_b);
264 
265  nftnl_rule_free(a);
266  nftnl_rule_free(b);
267 }
268 
269 int main(int argc, char *argv[])
270 {
271  test_bool();
272  if (!test_ok)
273  exit(EXIT_FAILURE);
274 
275  test_lshift();
276  if (!test_ok)
277  exit(EXIT_FAILURE);
278 
279  test_rshift();
280  if (!test_ok)
281  exit(EXIT_FAILURE);
282 
283  printf("%s: \033[32mOK\e[0m\n", argv[0]);
284  return EXIT_SUCCESS;
285 }