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 "config.h"
14 #include "syshead.h"
15 #include "init.h"
16 #include "mroute.h"
17
18 #include "fuzz_randomizer.h"
19
20
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)21 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
22
23 fuzz_random_init(data, size);
24 struct buffer buf;
25 struct gc_arena gc;
26
27 gc = gc_new();
28
29 char *tmp = get_random_string();
30 buf = string_alloc_buf(tmp, &gc);
31 free(tmp);
32
33 struct mroute_addr src_addr;
34 struct mroute_addr dst_addr;
35 mroute_addr_init(&src_addr);
36 mroute_addr_init(&dst_addr);
37 unsigned int ret = mroute_extract_addr_ip(&src_addr, &dst_addr, &buf);
38
39 if (ret & MROUTE_EXTRACT_SUCCEEDED) {
40 mroute_addr_mask_host_bits(&src_addr);
41 mroute_addr_print(&src_addr, &gc);
42 mroute_learnable_address(&src_addr, &gc);
43 }
44
45 uint16_t vid;
46 struct mroute_addr a1, a2;
47 mroute_addr_init(&a1);
48 mroute_addr_init(&a2);
49 mroute_extract_addr_ether(&a1, &a2, vid, &buf);
50
51 if (size > sizeof(struct openvpn_sockaddr)) {
52 struct openvpn_sockaddr local_sock;
53 memcpy(&local_sock, data, sizeof(struct openvpn_sockaddr));
54 mroute_extract_openvpn_sockaddr(&a1, &local_sock, true);
55 mroute_extract_openvpn_sockaddr(&a1, &local_sock, false);
56 }
57
58 struct mroute_helper *mhelper = NULL;
59 mhelper = mroute_helper_init(fuzz_randomizer_get_int(0, 0xfffffff));
60 if (mhelper != NULL) {
61 mroute_helper_add_iroute46(mhelper, fuzz_randomizer_get_int(0, MR_HELPER_NET_LEN-1));
62 mroute_helper_free(mhelper);
63 }
64
65 gc_free(&gc);
66
67 fuzz_random_destroy();
68 return 0;
69 }
70
71