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 #include <stddef.h>
30
31 #include <openthread/instance.h>
32 #include <openthread/ip6.h>
33 #include <openthread/link.h>
34 #include <openthread/message.h>
35 #include <openthread/srp_server.h>
36 #include <openthread/tasklet.h>
37 #include <openthread/thread.h>
38 #include <openthread/thread_ftd.h>
39 #include <openthread/platform/alarm-milli.h>
40
41 #include "fuzzer_platform.h"
42 #include "common/code_utils.hpp"
43 #include "common/time.hpp"
44
AdvanceTime(otInstance * aInstance,uint32_t aDuration)45 void AdvanceTime(otInstance *aInstance, uint32_t aDuration)
46 {
47 uint32_t time = otPlatAlarmMilliGetNow() + aDuration;
48
49 while (ot::TimeMilli(otPlatAlarmMilliGetNow()) <= ot::TimeMilli(time))
50 {
51 while (otTaskletsArePending(aInstance))
52 {
53 otTaskletsProcess(aInstance);
54 }
55
56 FuzzerPlatformProcess(aInstance);
57 }
58 }
59
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)60 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
61 {
62 const otPanId panId = 0xdead;
63
64 otInstance *instance = nullptr;
65 otMessage *message = nullptr;
66 otError error = OT_ERROR_NONE;
67 otMessageSettings settings;
68
69 VerifyOrExit(size > 0);
70
71 FuzzerPlatformInit();
72
73 instance = otInstanceInitSingle();
74 IgnoreError(otLinkSetPanId(instance, panId));
75 IgnoreError(otIp6SetEnabled(instance, true));
76 IgnoreError(otThreadSetEnabled(instance, true));
77 otSrpServerSetEnabled(instance, true);
78 IgnoreError(otThreadBecomeLeader(instance));
79
80 AdvanceTime(instance, 10000);
81
82 settings.mLinkSecurityEnabled = (data[0] & 0x1) != 0;
83 settings.mPriority = OT_MESSAGE_PRIORITY_NORMAL;
84
85 message = otIp6NewMessage(instance, &settings);
86 VerifyOrExit(message != nullptr, error = OT_ERROR_NO_BUFS);
87
88 error = otMessageAppend(message, data + 1, static_cast<uint16_t>(size - 1));
89 SuccessOrExit(error);
90
91 error = otIp6Send(instance, message);
92
93 message = nullptr;
94
95 VerifyOrExit(!FuzzerPlatformResetWasRequested());
96
97 AdvanceTime(instance, 10000);
98
99 exit:
100
101 if (message != nullptr)
102 {
103 otMessageFree(message);
104 }
105
106 if (instance != nullptr)
107 {
108 otInstanceFinalize(instance);
109 }
110
111 return 0;
112 }
113
