contrib/fuzz/fm1readmarkers.cc
author Martin von Zweigbergk <martinvonz@google.com>
Thu, 22 Sep 2022 16:50:30 -0700
changeset 49498 f2b1bc19ce90
parent 43859 8766728dbce6
permissions -rw-r--r--
status: let `--no-copies` override `ui.statuscopies`
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#include <Python.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string>
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#include "pyutil.h"
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extern "C" {
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static PYCODETYPE *code;
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extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv)
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{
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	contrib::initpy(*argv[0]);
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	code = (PYCODETYPE *)Py_CompileString(R"py(
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def maybeint(s, default):
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    try:
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        return int(s)
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    except ValueError:
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        return default
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try:
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    parts = data.split('\0', 2)
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    if len(parts) == 3:
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        offset, stop, data = parts
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    elif len(parts) == 2:
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        stop, data = parts
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        offset = 0
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    else:
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        offset = stop = 0
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    offset, stop = maybeint(offset, 0), maybeint(stop, len(data))
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    parsers.fm1readmarkers(data, offset, stop)
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except Exception as e:
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    pass
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    # uncomment this print if you're editing this Python code
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    # to debug failures.
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    # print e
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)py",
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	                                      "fuzzer", Py_file_input);
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	return 0;
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}
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int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)
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{
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	PyObject *text =
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	    PyBytes_FromStringAndSize((const char *)Data, (Py_ssize_t)Size);
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	PyObject *locals = PyDict_New();
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	PyDict_SetItemString(locals, "data", text);
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	PyObject *res = PyEval_EvalCode(code, contrib::pyglobals(), locals);
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	if (!res) {
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		PyErr_Print();
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	}
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	Py_XDECREF(res);
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	Py_DECREF(locals);
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	Py_DECREF(text);
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	return 0; // Non-zero return values are reserved for future use.
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}
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}