1 #include "pyutil.h"

     2 

     3 #include <string>

     4 

     5 namespace contrib

     6 {

     7 

     8 static char cpypath[8192] = "\0";

     9 

    10 static PyObject *mainmod;

    11 static PyObject *globals;

    12 

    13 /* TODO: use Python 3 for this fuzzing? */

    14 PyMODINIT_FUNC initparsers(void);

    15 

    16 void initpy(const char *cselfpath)

    17 {

    18 	const std::string subdir = "/sanpy/lib/python2.7";

    19 	/* HACK ALERT: we need a full Python installation built without

    20 	   pymalloc and with ASAN, so we dump one in

    21 	   $OUT/sanpy/lib/python2.7. This helps us wire that up. */

    22 	std::string selfpath(cselfpath);

    23 	std::string pypath;

    24 	auto pos = selfpath.rfind("/");

    25 	if (pos == std::string::npos) {

    26 		char wd[8192];

    27 		getcwd(wd, 8192);

    28 		pypath = std::string(wd) + subdir;

    29 	} else {

    30 		pypath = selfpath.substr(0, pos) + subdir;

    31 	}

    32 	strncpy(cpypath, pypath.c_str(), pypath.size());

    33 	setenv("PYTHONPATH", cpypath, 1);

    34 	setenv("PYTHONNOUSERSITE", "1", 1);

    35 	/* prevent Python from looking up users in the fuzz environment */

    36 	setenv("PYTHONUSERBASE", cpypath, 1);

    37 	Py_SetPythonHome(cpypath);

    38 	Py_InitializeEx(0);

    39 	mainmod = PyImport_AddModule("__main__");

    40 	globals = PyModule_GetDict(mainmod);

    41 	initparsers();

    42 }

    43 

    44 PyObject *pyglobals()

    45 {

    46 	return globals;

    47 }

    48 

    49 } // namespace contrib