#include <Python.h>

#include <assert.h>

#include <stdlib.h>

#include <unistd.h>

#include "pyutil.h"

#include <iostream>

#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:

    for fn in (

        parsers.isasciistr,

        parsers.asciilower,

        parsers.asciiupper,

        parsers.encodedir,

        parsers.pathencode,

        parsers.lowerencode,

    ):

        try:

            fn(data)

        except UnicodeDecodeError:

            pass  # some functions emit this exception

        except AttributeError:

            # pathencode needs hashlib, which fails to import because the time

            # module fails to import. We should try and fix that some day, but

            # for now we at least get coverage on non-hashencoded codepaths.

            if fn != pathencode:

                raise

        # uncomment this for debugging exceptions

        # except Exception as e:

        #     raise Exception('%r: %r' % (fn, e))

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);

  if (!code) {

    std::cerr << "failed to compile Python code!" << std::endl;

  }

  return 0;

}

int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)

{

  PyObject *mtext =

      PyBytes_FromStringAndSize((const char *)Data, (Py_ssize_t)Size);

  PyObject *locals = PyDict_New();

  PyDict_SetItemString(locals, "data", mtext);

  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.

}

}