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annotate fuzz/fuzz-harness.c @ 1773:c3ca130d193a

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fuzzing - avoid sha1 for random seed every iteration
author Matt Johnston <matt@ucc.asn.au>
date Sun, 01 Nov 2020 14:01:37 +0800
parents 2406a9987810
children 8179eabe16c9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include "includes.h"
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2 #include "buffer.h"
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3 #include "dbutil.h"
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4
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5 extern int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size);
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6
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7 int main(int argc, char ** argv) {
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8 int i;
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9 buffer *input = buf_new(100000);
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10
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11 for (i = 1; i < argc; i++) {
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12 #if DEBUG_TRACE
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13 if (strcmp(argv[i], "-v") == 0) {
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14 debug_trace = 1;
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15 TRACE(("debug printing on"))
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16 }
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17 #endif
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18 }
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19
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20 int old_fuzz_wrapfds = 0;
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21 for (i = 1; i < argc; i++) {
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22 if (argv[i][0] == '-') {
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23 /* ignore arguments */
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24 continue;
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25 }
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26
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27 char* fn = argv[i];
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28 buf_setlen(input, 0);
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29 buf_readfile(input, fn);
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30 buf_setpos(input, 0);
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31
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32 /* Run twice to catch problems with statefulness */
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33 fuzz.wrapfds = old_fuzz_wrapfds;
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34 printf("Running %s once \n", fn);
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35 LLVMFuzzerTestOneInput(input->data, input->len);
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36 printf("Running %s twice \n", fn);
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37 LLVMFuzzerTestOneInput(input->data, input->len);
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38 printf("Done %s\n", fn);
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39
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40 /* Disable wrapfd so it won't interfere with buf_readfile() above */
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41 old_fuzz_wrapfds = fuzz.wrapfds;
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42 fuzz.wrapfds = 0;
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43 }
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44
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45 printf("Finished\n");
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46
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47 return 0;
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48 }
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49
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50 size_t LLVMFuzzerMutate(uint8_t *Data, size_t Size, size_t MaxSize) {
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51 printf("standalone fuzzer harness shouldn't call LLVMFuzzerMutate");
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52 abort();
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53 return 0;
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54 }