1 /*
2 * Copyright (c) 2017, The OpenThread Authors.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. Neither the name of the copyright holder nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #define MAX_ITERATIONS 100
30
31 #include <stddef.h>
32
33 #include <openthread/instance.h>
34 #include <openthread/ip6.h>
35 #include <openthread/link.h>
36 #include <openthread/message.h>
37 #include <openthread/tasklet.h>
38 #include <openthread/thread.h>
39 #include <openthread/thread_ftd.h>
40
41 #include "fuzzer_platform.h"
42 #include "common/code_utils.hpp"
43
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)44 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
45 {
46 const otPanId panId = 0xdead;
47
48 otInstance * instance = nullptr;
49 otMessage * message = nullptr;
50 otError error = OT_ERROR_NONE;
51 otMessageSettings settings;
52
53 VerifyOrExit(size > 0);
54
55 FuzzerPlatformInit();
56
57 instance = otInstanceInitSingle();
58 IgnoreError(otLinkSetPanId(instance, panId));
59 IgnoreError(otIp6SetEnabled(instance, true));
60 IgnoreError(otThreadSetEnabled(instance, true));
61 IgnoreError(otThreadBecomeLeader(instance));
62
63 settings.mLinkSecurityEnabled = (data[0] & 0x1) != 0;
64 settings.mPriority = OT_MESSAGE_PRIORITY_NORMAL;
65
66 message = otIp6NewMessage(instance, &settings);
67 VerifyOrExit(message != nullptr, error = OT_ERROR_NO_BUFS);
68
69 error = otMessageAppend(message, data + 1, static_cast<uint16_t>(size - 1));
70 SuccessOrExit(error);
71
72 error = otIp6Send(instance, message);
73
74 message = nullptr;
75
76 VerifyOrExit(!FuzzerPlatformResetWasRequested());
77
78 for (int i = 0; i < MAX_ITERATIONS; i++)
79 {
80 while (otTaskletsArePending(instance))
81 {
82 otTaskletsProcess(instance);
83 }
84
85 FuzzerPlatformProcess(instance);
86 }
87
88 exit:
89
90 if (message != nullptr)
91 {
92 otMessageFree(message);
93 }
94
95 if (instance != nullptr)
96 {
97 otInstanceFinalize(instance);
98 }
99
100 return 0;
101 }
102