Mercurial > hg
view contrib/fuzz/manifest.cc @ 50825:973fbb27ab45
backout: migrate `opts` to native kwargs
It will take a bit to unwind `cmdutil.commit`, so there's a conversion to
byteskwargs there, without changing the type of `opts` in this function. That's
also useful to flag it as needing to be changed.
author | Matt Harbison <matt_harbison@yahoo.com> |
---|---|
date | Sun, 20 Aug 2023 00:27:27 -0400 |
parents | 0ff59434af72 |
children |
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#include <Python.h> #include <assert.h> #include <stdlib.h> #include <unistd.h> #include "FuzzedDataProvider.h" #include "pyutil.h" #include <string> extern "C" { static PYCODETYPE *code; extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv) { contrib::initpy(*argv[0]); code = (PYCODETYPE *)Py_CompileString(R"py( try: lm = parsers.lazymanifest(mdata) # iterate the whole thing, which causes the code to fully parse # every line in the manifest for e, _, _ in lm.iterentries(): # also exercise __getitem__ et al lm[e] e in lm (e + 'nope') in lm lm[b'xyzzy'] = (b'\0' * nlen, 'x') # do an insert, text should change assert lm.text() != mdata, "insert should change text and didn't: %r %r" % (lm.text(), mdata) cloned = lm.filtercopy(lambda x: x != 'xyzzy') assert cloned.text() == mdata, 'cloned text should equal mdata' cloned.diff(lm) del lm[b'xyzzy'] cloned.diff(lm) # should be back to the same assert lm.text() == mdata, "delete should have restored text but didn't: %r %r" % (lm.text(), mdata) except Exception as e: pass # uncomment this print if you're editing this Python code # to debug failures. # print e )py", "fuzzer", Py_file_input); return 0; } int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { // Don't allow fuzzer inputs larger than 100k, since we'll just bog // down and not accomplish much. if (Size > 100000) { return 0; } FuzzedDataProvider provider(Data, Size); Py_ssize_t nodelength = provider.ConsumeBool() ? 20 : 32; PyObject *nlen = PyLong_FromSsize_t(nodelength); PyObject *mtext = PyBytes_FromStringAndSize((const char *)Data, (Py_ssize_t)Size); PyObject *locals = PyDict_New(); PyDict_SetItemString(locals, "mdata", mtext); PyDict_SetItemString(locals, "nlen", nlen); PyObject *res = PyEval_EvalCode(code, contrib::pyglobals(), locals); if (!res) { PyErr_Print(); } Py_XDECREF(res); Py_DECREF(locals); Py_DECREF(mtext); return 0; // Non-zero return values are reserved for future use. } }