1 /* Copyright 2021 Google LLC
2 Licensed under the Apache License, Version 2.0 (the "License");
3 you may not use this file except in compliance with the License.
4 You may obtain a copy of the License at
5 http://www.apache.org/licenses/LICENSE-2.0
6 Unless required by applicable law or agreed to in writing, software
7 distributed under the License is distributed on an "AS IS" BASIS,
8 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
9 See the License for the specific language governing permissions and
10 limitations under the License.
11 */
12
13 #include "fuzz_header.h"
14
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)15 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
16 // init fuzz garbage collector
17 gb_init();
18
19 int succ = init_daemon(&data, &size);
20 if (succ == 0) {
21 char *t1 = gb_get_null_terminated(&data, &size);
22 char *t2 = gb_get_null_terminated(&data, &size);
23 if (t1 != NULL && t2 != NULL) {
24
25 // Util logic
26 hostname_isequal(t1, t2);
27
28 legal_hostname(t1);
29 char *tmp = canonicalise(t2, NULL);
30 if (tmp != NULL) {
31 free(tmp);
32 }
33
34 char *tmp_out = (char *)malloc(30);
35 int mac_type;
36 parse_hex(t1, (unsigned char *)tmp_out, 30, NULL, NULL);
37 parse_hex(t1, (unsigned char *)tmp_out, 30, NULL, &mac_type);
38 free(tmp_out);
39
40 wildcard_match(t1, t2);
41 if (strlen(t1) < strlen(t2)) {
42 wildcard_matchn(t1, t2, strlen(t1));
43 } else {
44 wildcard_matchn(t1, t2, strlen(t2));
45 }
46 hostname_issubdomain(t1, t2);
47
48 union all_addr addr1;
49 memset(&addr1, 0, sizeof(union all_addr));
50 is_name_synthetic(0, t1, &addr1);
51
52 if (size > sizeof(struct dns_header)) {
53 hash_questions(data, size, t2);
54
55 rrfilter(data, size, 0);
56 }
57 }
58
59 fuzz_blockdata_cleanup();
60 }
61
62 // cleanup
63 gb_cleanup();
64
65 return 0;
66 }
67