1 /*
2 * Copyright (c) 2018, 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 <stdlib.h>
30 #include <string.h>
31
32 #include <openthread/instance.h>
33 #include <openthread/ip6.h>
34 #include <openthread/link.h>
35 #include <openthread/ncp.h>
36 #include <openthread/srp_server.h>
37 #include <openthread/tasklet.h>
38 #include <openthread/thread.h>
39 #include <openthread/thread_ftd.h>
40 #include <openthread/platform/alarm-milli.h>
41
42 #include "fuzzer_platform.h"
43 #include "common/code_utils.hpp"
44 #include "common/time.hpp"
45
HdlcSend(const uint8_t * aBuf,uint16_t aBufLength)46 static int HdlcSend(const uint8_t *aBuf, uint16_t aBufLength)
47 {
48 OT_UNUSED_VARIABLE(aBuf);
49 OT_UNUSED_VARIABLE(aBufLength);
50
51 return aBufLength;
52 }
53
AdvanceTime(otInstance * aInstance,uint32_t aDuration)54 void AdvanceTime(otInstance *aInstance, uint32_t aDuration)
55 {
56 uint32_t time = otPlatAlarmMilliGetNow() + aDuration;
57
58 while (ot::TimeMilli(otPlatAlarmMilliGetNow()) <= ot::TimeMilli(time))
59 {
60 while (otTaskletsArePending(aInstance))
61 {
62 otTaskletsProcess(aInstance);
63 }
64
65 FuzzerPlatformProcess(aInstance);
66 }
67 }
68
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)69 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
70 {
71 const otPanId panId = 0xdead;
72
73 otInstance *instance = nullptr;
74 uint8_t *buf = nullptr;
75
76 VerifyOrExit(size <= 65536);
77
78 FuzzerPlatformInit();
79
80 instance = otInstanceInitSingle();
81 otNcpHdlcInit(instance, HdlcSend);
82 IgnoreError(otLinkSetPanId(instance, panId));
83 IgnoreError(otIp6SetEnabled(instance, true));
84 IgnoreError(otThreadSetEnabled(instance, true));
85 otSrpServerSetEnabled(instance, true);
86 IgnoreError(otThreadBecomeLeader(instance));
87
88 AdvanceTime(instance, 10000);
89
90 buf = static_cast<uint8_t *>(malloc(size));
91 memcpy(buf, data, size);
92 otNcpHdlcReceive(buf, static_cast<uint16_t>(size));
93
94 VerifyOrExit(!FuzzerPlatformResetWasRequested());
95
96 AdvanceTime(instance, 10000);
97
98 exit:
99
100 if (buf != nullptr)
101 {
102 free(buf);
103 }
104
105 if (instance != nullptr)
106 {
107 otInstanceFinalize(instance);
108 }
109
110 return 0;
111 }
112
