Mercurial > dropbear

annotate fuzzer-pubkey.c @ 1511:5916af64acd4 fuzz

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merge from main
author Matt Johnston <matt@ucc.asn.au>
date Sat, 17 Feb 2018 19:29:51 +0800
parents a90fdd2d2ed8
children 92c93b4a3646
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ddfcadca3c4c fuzzer-pubkey
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1 #include "fuzz.h"
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2 #include "session.h"
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3 #include "fuzz-wrapfd.h"
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4 #include "debug.h"
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5
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6 static void setup_fuzzer(void) {
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7 fuzz_common_setup();
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8 }
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9
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10 int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
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11 static int once = 0;
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12 if (!once) {
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13 setup_fuzzer();
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14 once = 1;
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15 }
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16
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17 if (fuzz_set_input(Data, Size) == DROPBEAR_FAILURE) {
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18 return 0;
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19 }
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20
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21 m_malloc_set_epoch(1);
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22
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23 // choose a keytype based on input
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24 uint8_t b = 0;
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25 size_t i;
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26 for (i = 0; i < Size; i++) {
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27 b ^= Data[i];
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28 }
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29 const char* algoname = fuzz_signkey_names[b%DROPBEAR_SIGNKEY_NUM_NAMED];
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30 const char* keyblob = "blob"; // keep short
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31
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32 if (setjmp(fuzz.jmp) == 0) {
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33 fuzz_checkpubkey_line(fuzz.input, 5, "/home/me/authorized_keys",
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34 algoname, strlen(algoname),
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35 (unsigned char*)keyblob, strlen(keyblob));
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36 m_malloc_free_epoch(1, 0);
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37 } else {
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38 m_malloc_free_epoch(1, 1);
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39 TRACE(("dropbear_exit longjmped"))
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40 // dropbear_exit jumped here
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41 }
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42
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43 return 0;
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44 }