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