#include "Python.h"

#include "osdefs.h" /* DELIM */

#include "pycore_coreconfig.h"

#include "pycore_fileutils.h"

#include "pycore_getopt.h"

#include "pycore_pylifecycle.h"

#include "pycore_pymem.h"

#include "pycore_pystate.h" /* _PyRuntime */

#include "pycore_pathconfig.h"

#include <locale.h> /* setlocale() */

#ifdef HAVE_LANGINFO_H

# include <langinfo.h> /* nl_langinfo(CODESET) */

#endif

#if defined(MS_WINDOWS) || defined(__CYGWIN__)

# include <windows.h> /* GetACP() */

# ifdef HAVE_IO_H

# include <io.h>

# endif

# ifdef HAVE_FCNTL_H

# include <fcntl.h> /* O_BINARY */

# endif

#endif

/* --- Command line options --------------------------------------- */

/* Short usage message (with %s for argv0) */

static const char usage_line[] =

"usage: %ls [option] ... [-c cmd | -m mod | file | -] [arg] ...\n";

/* Long usage message, split into parts < 512 bytes */

static const char usage_1[] = "\

Options and arguments (and corresponding environment variables):\n\

-b : issue warnings about str(bytes_instance), str(bytearray_instance)\n\

and comparing bytes/bytearray with str. (-bb: issue errors)\n\

-B : don't write .pyc files on import; also PYTHONDONTWRITEBYTECODE=x\n\

-c cmd : program passed in as string (terminates option list)\n\

-d : debug output from parser; also PYTHONDEBUG=x\n\

-E : ignore PYTHON* environment variables (such as PYTHONPATH)\n\

-h : print this help message and exit (also --help)\n\

";

static const char usage_2[] = "\

-i : inspect interactively after running script; forces a prompt even\n\

if stdin does not appear to be a terminal; also PYTHONINSPECT=x\n\

-I : isolate Python from the user's environment (implies -E and -s)\n\

-m mod : run library module as a script (terminates option list)\n\

-O : remove assert and __debug__-dependent statements; add .opt-1 before\n\

.pyc extension; also PYTHONOPTIMIZE=x\n\

-OO : do -O changes and also discard docstrings; add .opt-2 before\n\

.pyc extension\n\

-q : don't print version and copyright messages on interactive startup\n\

-s : don't add user site directory to sys.path; also PYTHONNOUSERSITE\n\

-S : don't imply 'import site' on initialization\n\

";

static const char usage_3[] = "\

-u : force the stdout and stderr streams to be unbuffered;\n\

this option has no effect on stdin; also PYTHONUNBUFFERED=x\n\

-v : verbose (trace import statements); also PYTHONVERBOSE=x\n\

can be supplied multiple times to increase verbosity\n\

-V : print the Python version number and exit (also --version)\n\

when given twice, print more information about the build\n\

-W arg : warning control; arg is action:message:category:module:lineno\n\

also PYTHONWARNINGS=arg\n\

-x : skip first line of source, allowing use of non-Unix forms of #!cmd\n\

-X opt : set implementation-specific option\n\

--check-hash-based-pycs always|default|never:\n\

control how Python invalidates hash-based .pyc files\n\

";

static const char usage_4[] = "\

file : program read from script file\n\

- : program read from stdin (default; interactive mode if a tty)\n\

arg ...: arguments passed to program in sys.argv[1:]\n\n\

Other environment variables:\n\

PYTHONSTARTUP: file executed on interactive startup (no default)\n\

PYTHONPATH : '%lc'-separated list of directories prefixed to the\n\

default module search path. The result is sys.path.\n\

";

static const char usage_5[] =

"PYTHONHOME : alternate <prefix> directory (or <prefix>%lc<exec_prefix>).\n"

" The default module search path uses %s.\n"

"PYTHONCASEOK : ignore case in 'import' statements (Windows).\n"

"PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.\n"

"PYTHONFAULTHANDLER: dump the Python traceback on fatal errors.\n";

static const char usage_6[] =

"PYTHONHASHSEED: if this variable is set to 'random', a random value is used\n"

" to seed the hashes of str, bytes and datetime objects. It can also be\n"

" set to an integer in the range [0,4294967295] to get hash values with a\n"

" predictable seed.\n"

"PYTHONMALLOC: set the Python memory allocators and/or install debug hooks\n"

" on Python memory allocators. Use PYTHONMALLOC=debug to install debug\n"

" hooks.\n"

"PYTHONCOERCECLOCALE: if this variable is set to 0, it disables the locale\n"

" coercion behavior. Use PYTHONCOERCECLOCALE=warn to request display of\n"

" locale coercion and locale compatibility warnings on stderr.\n"

"PYTHONBREAKPOINT: if this variable is set to 0, it disables the default\n"

" debugger. It can be set to the callable of your debugger of choice.\n"

"PYTHONDEVMODE: enable the development mode.\n"

"PYTHONPYCACHEPREFIX: root directory for bytecode cache (pyc) files.\n";

#if defined(MS_WINDOWS)

# define PYTHONHOMEHELP "<prefix>\\python{major}{minor}"

#else

# define PYTHONHOMEHELP "<prefix>/lib/pythonX.X"

#endif

/* --- Global configuration variables ----------------------------- */

/* UTF-8 mode (PEP 540): if equals to 1, use the UTF-8 encoding, and change

stdin and stdout error handler to "surrogateescape". It is equal to

-1 by default: unknown, will be set by Py_Main() */

int Py_UTF8Mode = -1;

int Py_DebugFlag = 0; /* Needed by parser.c */

int Py_VerboseFlag = 0; /* Needed by import.c */

int Py_QuietFlag = 0; /* Needed by sysmodule.c */

int Py_InteractiveFlag = 0; /* Needed by Py_FdIsInteractive() below */

int Py_InspectFlag = 0; /* Needed to determine whether to exit at SystemExit */

int Py_OptimizeFlag = 0; /* Needed by compile.c */

int Py_NoSiteFlag = 0; /* Suppress 'import site' */

int Py_BytesWarningFlag = 0; /* Warn on str(bytes) and str(buffer) */

int Py_FrozenFlag = 0; /* Needed by getpath.c */

int Py_IgnoreEnvironmentFlag = 0; /* e.g. PYTHONPATH, PYTHONHOME */

int Py_DontWriteBytecodeFlag = 0; /* Suppress writing bytecode files (*.pyc) */

int Py_NoUserSiteDirectory = 0; /* for -s and site.py */

int Py_UnbufferedStdioFlag = 0; /* Unbuffered binary std{in,out,err} */

int Py_HashRandomizationFlag = 0; /* for -R and PYTHONHASHSEED */

int Py_IsolatedFlag = 0; /* for -I, isolate from user's env */

#ifdef MS_WINDOWS

int Py_LegacyWindowsFSEncodingFlag = 0; /* Uses mbcs instead of utf-8 */

int Py_LegacyWindowsStdioFlag = 0; /* Uses FileIO instead of WindowsConsoleIO */

#endif

static PyObject *

_Py_GetGlobalVariablesAsDict(void)

{

PyObject *dict, *obj;

dict = PyDict_New();

if (dict == NULL) {

return NULL;

}

#define SET_ITEM(KEY, EXPR) \

do { \

obj = (EXPR); \

if (obj == NULL) { \

return NULL; \

} \

int res = PyDict_SetItemString(dict, (KEY), obj); \

Py_DECREF(obj); \

if (res < 0) { \

goto fail; \

} \

} while (0)

#define SET_ITEM_INT(VAR) \

SET_ITEM(#VAR, PyLong_FromLong(VAR))

#define FROM_STRING(STR) \

((STR != NULL) ? \

PyUnicode_FromString(STR) \

: (Py_INCREF(Py_None), Py_None))

#define SET_ITEM_STR(VAR) \

SET_ITEM(#VAR, FROM_STRING(VAR))

SET_ITEM_STR(Py_FileSystemDefaultEncoding);

SET_ITEM_INT(Py_HasFileSystemDefaultEncoding);

SET_ITEM_STR(Py_FileSystemDefaultEncodeErrors);

SET_ITEM_INT(_Py_HasFileSystemDefaultEncodeErrors);

SET_ITEM_INT(Py_UTF8Mode);

SET_ITEM_INT(Py_DebugFlag);

SET_ITEM_INT(Py_VerboseFlag);

SET_ITEM_INT(Py_QuietFlag);

SET_ITEM_INT(Py_InteractiveFlag);

SET_ITEM_INT(Py_InspectFlag);

SET_ITEM_INT(Py_OptimizeFlag);

SET_ITEM_INT(Py_NoSiteFlag);

SET_ITEM_INT(Py_BytesWarningFlag);

SET_ITEM_INT(Py_FrozenFlag);

SET_ITEM_INT(Py_IgnoreEnvironmentFlag);

SET_ITEM_INT(Py_DontWriteBytecodeFlag);

SET_ITEM_INT(Py_NoUserSiteDirectory);

SET_ITEM_INT(Py_UnbufferedStdioFlag);

SET_ITEM_INT(Py_HashRandomizationFlag);

SET_ITEM_INT(Py_IsolatedFlag);

#ifdef MS_WINDOWS

SET_ITEM_INT(Py_LegacyWindowsFSEncodingFlag);

SET_ITEM_INT(Py_LegacyWindowsStdioFlag);

#endif

return dict;

fail:

Py_DECREF(dict);

return NULL;

#undef FROM_STRING

#undef SET_ITEM

#undef SET_ITEM_INT

#undef SET_ITEM_STR

}

/* --- _PyWstrList ------------------------------------------------ */

#ifndef NDEBUG

int

_PyWstrList_CheckConsistency(const _PyWstrList *list)

{

assert(list->length >= 0);

if (list->length != 0) {

assert(list->items != NULL);

}

for (Py_ssize_t i = 0; i < list->length; i++) {

assert(list->items[i] != NULL);

}

return 1;

}

#endif /* Py_DEBUG */

void

_PyWstrList_Clear(_PyWstrList *list)

{

assert(_PyWstrList_CheckConsistency(list));

for (Py_ssize_t i=0; i < list->length; i++) {

PyMem_RawFree(list->items[i]);

}

PyMem_RawFree(list->items);

list->length = 0;

list->items = NULL;

}

int

_PyWstrList_Copy(_PyWstrList *list, const _PyWstrList *list2)

{

assert(_PyWstrList_CheckConsistency(list));

assert(_PyWstrList_CheckConsistency(list2));

if (list2->length == 0) {

_PyWstrList_Clear(list);

return 0;

}

_PyWstrList copy = _PyWstrList_INIT;

size_t size = list2->length * sizeof(list2->items[0]);

copy.items = PyMem_RawMalloc(size);

if (copy.items == NULL) {

return -1;

}

for (Py_ssize_t i=0; i < list2->length; i++) {

wchar_t *item = _PyMem_RawWcsdup(list2->items[i]);

if (item == NULL) {

_PyWstrList_Clear(&copy);

return -1;

}

copy.items[i] = item;

copy.length = i + 1;

}

_PyWstrList_Clear(list);

*list = copy;

return 0;

}

int

_PyWstrList_Append(_PyWstrList *list, const wchar_t *item)

{

if (list->length == PY_SSIZE_T_MAX) {

/* lenght+1 would overflow */

return -1;

}

wchar_t *item2 = _PyMem_RawWcsdup(item);

if (item2 == NULL) {

return -1;

}

size_t size = (list->length + 1) * sizeof(list->items[0]);

wchar_t **items2 = (wchar_t **)PyMem_RawRealloc(list->items, size);

if (items2 == NULL) {

PyMem_RawFree(item2);

return -1;

}

items2[list->length] = item2;

list->items = items2;

list->length++;

return 0;

}

int

_PyWstrList_Extend(_PyWstrList *list, const _PyWstrList *list2)

{

for (Py_ssize_t i = 0; i < list2->length; i++) {

if (_PyWstrList_Append(list, list2->items[i])) {

return -1;

}

}

return 0;

}

static int

_PyWstrList_Find(_PyWstrList *list, const wchar_t *item)

{

for (Py_ssize_t i = 0; i < list->length; i++) {

if (wcscmp(list->items[i], item) == 0) {

return 1;

}

}

return 0;

}

PyObject*

_PyWstrList_AsList(const _PyWstrList *list)

{

assert(_PyWstrList_CheckConsistency(list));

PyObject *pylist = PyList_New(list->length);

if (pylist == NULL) {

return NULL;

}

for (Py_ssize_t i = 0; i < list->length; i++) {

PyObject *item = PyUnicode_FromWideChar(list->items[i], -1);

if (item == NULL) {

Py_DECREF(pylist);

return NULL;

}

PyList_SET_ITEM(pylist, i, item);

}

return pylist;

}

/* --- Py_SetStandardStreamEncoding() ----------------------------- */

/* Helper to allow an embedding application to override the normal

* mechanism that attempts to figure out an appropriate IO encoding

*/

static char *_Py_StandardStreamEncoding = NULL;

static char *_Py_StandardStreamErrors = NULL;

int

Py_SetStandardStreamEncoding(const char *encoding, const char *errors)

{

if (Py_IsInitialized()) {

/* This is too late to have any effect */

return -1;

}

int res = 0;

/* Py_SetStandardStreamEncoding() can be called before Py_Initialize(),

but Py_Initialize() can change the allocator. Use a known allocator

to be able to release the memory later. */

PyMemAllocatorEx old_alloc;

_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);

/* Can't call PyErr_NoMemory() on errors, as Python hasn't been

* initialised yet.

*

* However, the raw memory allocators are initialised appropriately

* as C static variables, so _PyMem_RawStrdup is OK even though

* Py_Initialize hasn't been called yet.

*/

if (encoding) {

PyMem_RawFree(_Py_StandardStreamEncoding);

_Py_StandardStreamEncoding = _PyMem_RawStrdup(encoding);

if (!_Py_StandardStreamEncoding) {

res = -2;

goto done;

}

}

if (errors) {

PyMem_RawFree(_Py_StandardStreamErrors);

_Py_StandardStreamErrors = _PyMem_RawStrdup(errors);

if (!_Py_StandardStreamErrors) {

PyMem_RawFree(_Py_StandardStreamEncoding);

_Py_StandardStreamEncoding = NULL;

res = -3;

goto done;

}

}

#ifdef MS_WINDOWS

if (_Py_StandardStreamEncoding) {

/* Overriding the stream encoding implies legacy streams */

Py_LegacyWindowsStdioFlag = 1;

}

#endif

done:

PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);

return res;

}

void

_Py_ClearStandardStreamEncoding(void)

{

/* Use the same allocator than Py_SetStandardStreamEncoding() */

PyMemAllocatorEx old_alloc;

_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);

/* We won't need them anymore. */

if (_Py_StandardStreamEncoding) {

PyMem_RawFree(_Py_StandardStreamEncoding);

_Py_StandardStreamEncoding = NULL;

}

if (_Py_StandardStreamErrors) {

PyMem_RawFree(_Py_StandardStreamErrors);

_Py_StandardStreamErrors = NULL;

}

PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);

}

/* --- Py_GetArgcArgv() ------------------------------------------- */

/* For Py_GetArgcArgv(); set by _Py_SetArgcArgv() */

static _PyWstrList orig_argv = {.length = 0, .items = NULL};

void

_Py_ClearArgcArgv(void)

{

PyMemAllocatorEx old_alloc;

_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);

_PyWstrList_Clear(&orig_argv);

PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);

}

static int

_Py_SetArgcArgv(Py_ssize_t argc, wchar_t * const *argv)

{

const _PyWstrList argv_list = {.length = argc, .items = (wchar_t **)argv};

int res;

PyMemAllocatorEx old_alloc;

_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);

res = _PyWstrList_Copy(&orig_argv, &argv_list);

PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);

return res;

}

/* Make the *original* argc/argv available to other modules.

This is rare, but it is needed by the secureware extension. */

void

Py_GetArgcArgv(int *argc, wchar_t ***argv)

{

*argc = (int)orig_argv.length;

*argv = orig_argv.items;

}

/* --- _PyCoreConfig ---------------------------------------------- */

#define DECODE_LOCALE_ERR(NAME, LEN) \

(((LEN) == -2) \

? _Py_INIT_ERR("cannot decode " NAME) \

: _Py_INIT_NO_MEMORY())

/* Free memory allocated in config, but don't clear all attributes */

void

_PyCoreConfig_Clear(_PyCoreConfig *config)

{

#define CLEAR(ATTR) \

do { \

PyMem_RawFree(ATTR); \

ATTR = NULL; \

} while (0)

CLEAR(config->pycache_prefix);

CLEAR(config->module_search_path_env);

CLEAR(config->home);

CLEAR(config->program_name);

_PyWstrList_Clear(&config->argv);

_PyWstrList_Clear(&config->warnoptions);

_PyWstrList_Clear(&config->xoptions);

_PyWstrList_Clear(&config->module_search_paths);

config->use_module_search_paths = 0;

CLEAR(config->executable);

CLEAR(config->prefix);

CLEAR(config->base_prefix);

CLEAR(config->exec_prefix);

#ifdef MS_WINDOWS

CLEAR(config->dll_path);

#endif

CLEAR(config->base_exec_prefix);

CLEAR(config->filesystem_encoding);

CLEAR(config->filesystem_errors);

CLEAR(config->stdio_encoding);

CLEAR(config->stdio_errors);

CLEAR(config->run_command);

CLEAR(config->run_module);

CLEAR(config->run_filename);

CLEAR(config->check_hash_pycs_mode);

#undef CLEAR

}

/* Copy str into *config_str (duplicate the string) */

_PyInitError

_PyCoreConfig_SetString(wchar_t **config_str, const wchar_t *str)

{

wchar_t *str2;

if (str != NULL) {

str2 = _PyMem_RawWcsdup(str);

if (str2 == NULL) {

return _Py_INIT_NO_MEMORY();

}

}

else {

str2 = NULL;

}

PyMem_RawFree(*config_str);

*config_str = str2;

return _Py_INIT_OK();

}

static _PyInitError

_PyCoreConfig_DecodeLocaleErr(wchar_t **config_str, const char *str,

const char *decode_err_msg)

{

_PyInitError err = _Py_PreInitialize(NULL);

if (_Py_INIT_FAILED(err)) {

return err;

}

wchar_t *str2;

if (str != NULL) {

size_t len;

str2 = Py_DecodeLocale(str, &len);

if (str2 == NULL) {

if (len == (size_t)-2) {

return _Py_INIT_ERR(decode_err_msg);

}

else {

return _Py_INIT_NO_MEMORY();

}

}

}

else {

str2 = NULL;

}

PyMem_RawFree(*config_str);

*config_str = str2;

return _Py_INIT_OK();

}

#define CONFIG_DECODE_LOCALE(config_str, str, NAME) \

_PyCoreConfig_DecodeLocaleErr(config_str, str, "cannot decode " NAME)

/* Decode str using Py_DecodeLocale() and set the result into *config_str.

Pre-initialize Python if needed to ensure that encodings are properly

configured. */

_PyInitError

_PyCoreConfig_DecodeLocale(wchar_t **config_str, const char *str)

{

return CONFIG_DECODE_LOCALE(config_str, str, "string");

}

_PyInitError

_PyCoreConfig_Copy(_PyCoreConfig *config, const _PyCoreConfig *config2)

{

_PyInitError err;

_PyCoreConfig_Clear(config);

#define COPY_ATTR(ATTR) config->ATTR = config2->ATTR

#define COPY_WSTR_ATTR(ATTR) \

do { \

err = _PyCoreConfig_SetString(&config->ATTR, config2->ATTR); \

if (_Py_INIT_FAILED(err)) { \

return err; \

} \

} while (0)

#define COPY_WSTRLIST(LIST) \

do { \

if (_PyWstrList_Copy(&config->LIST, &config2->LIST) < 0 ) { \

return _Py_INIT_NO_MEMORY(); \

} \

} while (0)

COPY_ATTR(isolated);

COPY_ATTR(use_environment);

COPY_ATTR(dev_mode);

COPY_ATTR(install_signal_handlers);

COPY_ATTR(use_hash_seed);

COPY_ATTR(hash_seed);

COPY_ATTR(_install_importlib);

COPY_ATTR(faulthandler);

COPY_ATTR(tracemalloc);

COPY_ATTR(import_time);

COPY_ATTR(show_ref_count);

COPY_ATTR(show_alloc_count);

COPY_ATTR(dump_refs);

COPY_ATTR(malloc_stats);

COPY_WSTR_ATTR(pycache_prefix);

COPY_WSTR_ATTR(module_search_path_env);

COPY_WSTR_ATTR(home);

COPY_WSTR_ATTR(program_name);

COPY_ATTR(parse_argv);

COPY_WSTRLIST(argv);

COPY_WSTRLIST(warnoptions);

COPY_WSTRLIST(xoptions);

COPY_WSTRLIST(module_search_paths);

COPY_ATTR(use_module_search_paths);

COPY_WSTR_ATTR(executable);

COPY_WSTR_ATTR(prefix);

COPY_WSTR_ATTR(base_prefix);

COPY_WSTR_ATTR(exec_prefix);

#ifdef MS_WINDOWS

COPY_WSTR_ATTR(dll_path);

#endif

COPY_WSTR_ATTR(base_exec_prefix);

COPY_ATTR(site_import);

COPY_ATTR(bytes_warning);

COPY_ATTR(inspect);

COPY_ATTR(interactive);

COPY_ATTR(optimization_level);

COPY_ATTR(parser_debug);

COPY_ATTR(write_bytecode);

COPY_ATTR(verbose);

COPY_ATTR(quiet);

COPY_ATTR(user_site_directory);

COPY_ATTR(configure_c_stdio);

COPY_ATTR(buffered_stdio);

COPY_WSTR_ATTR(filesystem_encoding);

COPY_WSTR_ATTR(filesystem_errors);

COPY_WSTR_ATTR(stdio_encoding);

COPY_WSTR_ATTR(stdio_errors);

#ifdef MS_WINDOWS

COPY_ATTR(legacy_windows_stdio);

#endif

COPY_ATTR(skip_source_first_line);

COPY_WSTR_ATTR(run_command);

COPY_WSTR_ATTR(run_module);

COPY_WSTR_ATTR(run_filename);

COPY_WSTR_ATTR(check_hash_pycs_mode);

COPY_ATTR(pathconfig_warnings);

COPY_ATTR(_init_main);

#undef COPY_ATTR

#undef COPY_WSTR_ATTR

#undef COPY_WSTRLIST

return _Py_INIT_OK();

}

static PyObject *

_PyCoreConfig_AsDict(const _PyCoreConfig *config)

{

PyObject *dict;

dict = PyDict_New();

if (dict == NULL) {

return NULL;

}

#define SET_ITEM(KEY, EXPR) \

do { \

PyObject *obj = (EXPR); \

if (obj == NULL) { \

goto fail; \

} \

int res = PyDict_SetItemString(dict, (KEY), obj); \

Py_DECREF(obj); \

if (res < 0) { \

goto fail; \

} \

} while (0)

#define SET_ITEM_INT(ATTR) \

SET_ITEM(#ATTR, PyLong_FromLong(config->ATTR))

#define SET_ITEM_UINT(ATTR) \

SET_ITEM(#ATTR, PyLong_FromUnsignedLong(config->ATTR))

#define FROM_WSTRING(STR) \

((STR != NULL) ? \

PyUnicode_FromWideChar(STR, -1) \

: (Py_INCREF(Py_None), Py_None))

#define SET_ITEM_WSTR(ATTR) \

SET_ITEM(#ATTR, FROM_WSTRING(config->ATTR))

#define SET_ITEM_WSTRLIST(LIST) \

SET_ITEM(#LIST, _PyWstrList_AsList(&config->LIST))

SET_ITEM_INT(isolated);

SET_ITEM_INT(use_environment);

SET_ITEM_INT(dev_mode);

SET_ITEM_INT(install_signal_handlers);

SET_ITEM_INT(use_hash_seed);

SET_ITEM_UINT(hash_seed);

SET_ITEM_INT(faulthandler);

SET_ITEM_INT(tracemalloc);

SET_ITEM_INT(import_time);

SET_ITEM_INT(show_ref_count);

SET_ITEM_INT(show_alloc_count);

SET_ITEM_INT(dump_refs);

SET_ITEM_INT(malloc_stats);

SET_ITEM_WSTR(filesystem_encoding);

SET_ITEM_WSTR(filesystem_errors);

SET_ITEM_WSTR(pycache_prefix);

SET_ITEM_WSTR(program_name);

SET_ITEM_INT(parse_argv);

SET_ITEM_WSTRLIST(argv);

SET_ITEM_WSTRLIST(xoptions);

SET_ITEM_WSTRLIST(warnoptions);

SET_ITEM_WSTR(module_search_path_env);

SET_ITEM_WSTR(home);

SET_ITEM_WSTRLIST(module_search_paths);

SET_ITEM_WSTR(executable);

SET_ITEM_WSTR(prefix);

SET_ITEM_WSTR(base_prefix);

SET_ITEM_WSTR(exec_prefix);

SET_ITEM_WSTR(base_exec_prefix);

#ifdef MS_WINDOWS

SET_ITEM_WSTR(dll_path);

#endif

SET_ITEM_INT(site_import);

SET_ITEM_INT(bytes_warning);

SET_ITEM_INT(inspect);

SET_ITEM_INT(interactive);

SET_ITEM_INT(optimization_level);

SET_ITEM_INT(parser_debug);

SET_ITEM_INT(write_bytecode);

SET_ITEM_INT(verbose);

SET_ITEM_INT(quiet);

SET_ITEM_INT(user_site_directory);

SET_ITEM_INT(configure_c_stdio);

SET_ITEM_INT(buffered_stdio);

SET_ITEM_WSTR(stdio_encoding);

SET_ITEM_WSTR(stdio_errors);

#ifdef MS_WINDOWS

SET_ITEM_INT(legacy_windows_stdio);

#endif

SET_ITEM_INT(skip_source_first_line);

SET_ITEM_WSTR(run_command);

SET_ITEM_WSTR(run_module);

SET_ITEM_WSTR(run_filename);

SET_ITEM_INT(_install_importlib);

SET_ITEM_WSTR(check_hash_pycs_mode);

SET_ITEM_INT(pathconfig_warnings);

SET_ITEM_INT(_init_main);

return dict;

fail:

Py_DECREF(dict);

return NULL;

#undef FROM_WSTRING

#undef SET_ITEM

#undef SET_ITEM_INT

#undef SET_ITEM_UINT

#undef SET_ITEM_WSTR

#undef SET_ITEM_WSTRLIST

}

static const char*

_PyCoreConfig_GetEnv(const _PyCoreConfig *config, const char *name)

{

return _Py_GetEnv(config->use_environment, name);

}

/* Get a copy of the environment variable as wchar_t*.

Return 0 on success, but *dest can be NULL.

Return -1 on memory allocation failure. Return -2 on decoding error. */

static _PyInitError

_PyCoreConfig_GetEnvDup(const _PyCoreConfig *config,

wchar_t **dest,

wchar_t *wname, char *name,

const char *decode_err_msg)

{

assert(*dest == NULL);

assert(config->use_environment >= 0);

if (!config->use_environment) {

*dest = NULL;

return _Py_INIT_OK();

}

#ifdef MS_WINDOWS

const wchar_t *var = _wgetenv(wname);

if (!var || var[0] == '\0') {

*dest = NULL;

return _Py_INIT_OK();

}

return _PyCoreConfig_SetString(dest, var);

#else

const char *var = getenv(name);

if (!var || var[0] == '\0') {

*dest = NULL;

return _Py_INIT_OK();

}

return _PyCoreConfig_DecodeLocaleErr(dest, var, decode_err_msg);

#endif

}

#define CONFIG_GET_ENV_DUP(CONFIG, DEST, WNAME, NAME) \

_PyCoreConfig_GetEnvDup(CONFIG, DEST, WNAME, NAME, "cannot decode " NAME)

static void

_PyCoreConfig_GetGlobalConfig(_PyCoreConfig *config)

{

#define COPY_FLAG(ATTR, VALUE) \

if (config->ATTR == -1) { \

config->ATTR = VALUE; \

}

#define COPY_NOT_FLAG(ATTR, VALUE) \

if (config->ATTR == -1) { \

config->ATTR = !(VALUE); \

}

COPY_FLAG(isolated, Py_IsolatedFlag);

COPY_NOT_FLAG(use_environment, Py_IgnoreEnvironmentFlag);

COPY_FLAG(bytes_warning, Py_BytesWarningFlag);

COPY_FLAG(inspect, Py_InspectFlag);

COPY_FLAG(interactive, Py_InteractiveFlag);

COPY_FLAG(optimization_level, Py_OptimizeFlag);

COPY_FLAG(parser_debug, Py_DebugFlag);

COPY_FLAG(verbose, Py_VerboseFlag);

COPY_FLAG(quiet, Py_QuietFlag);

#ifdef MS_WINDOWS

COPY_FLAG(legacy_windows_stdio, Py_LegacyWindowsStdioFlag);

#endif

COPY_NOT_FLAG(pathconfig_warnings, Py_FrozenFlag);

COPY_NOT_FLAG(buffered_stdio, Py_UnbufferedStdioFlag);

COPY_NOT_FLAG(site_import, Py_NoSiteFlag);

COPY_NOT_FLAG(write_bytecode, Py_DontWriteBytecodeFlag);

COPY_NOT_FLAG(user_site_directory, Py_NoUserSiteDirectory);

#undef COPY_FLAG

#undef COPY_NOT_FLAG

}

/* Set Py_xxx global configuration variables from 'config' configuration. */

static void

_PyCoreConfig_SetGlobalConfig(const _PyCoreConfig *config)

{

#define COPY_FLAG(ATTR, VAR) \

if (config->ATTR != -1) { \

VAR = config->ATTR; \

}

#define COPY_NOT_FLAG(ATTR, VAR) \

if (config->ATTR != -1) { \

VAR = !config->ATTR; \

}

COPY_FLAG(isolated, Py_IsolatedFlag);

COPY_NOT_FLAG(use_environment, Py_IgnoreEnvironmentFlag);

COPY_FLAG(bytes_warning, Py_BytesWarningFlag);

COPY_FLAG(inspect, Py_InspectFlag);

COPY_FLAG(interactive, Py_InteractiveFlag);

COPY_FLAG(optimization_level, Py_OptimizeFlag);

COPY_FLAG(parser_debug, Py_DebugFlag);

COPY_FLAG(verbose, Py_VerboseFlag);

COPY_FLAG(quiet, Py_QuietFlag);

#ifdef MS_WINDOWS

COPY_FLAG(legacy_windows_stdio, Py_LegacyWindowsStdioFlag);

#endif

COPY_NOT_FLAG(pathconfig_warnings, Py_FrozenFlag);

COPY_NOT_FLAG(buffered_stdio, Py_UnbufferedStdioFlag);

COPY_NOT_FLAG(site_import, Py_NoSiteFlag);

COPY_NOT_FLAG(write_bytecode, Py_DontWriteBytecodeFlag);

COPY_NOT_FLAG(user_site_directory, Py_NoUserSiteDirectory);

/* Random or non-zero hash seed */

Py_HashRandomizationFlag = (config->use_hash_seed == 0 ||

config->hash_seed != 0);

#undef COPY_FLAG

#undef COPY_NOT_FLAG

}

/* Get the program name: use PYTHONEXECUTABLE and __PYVENV_LAUNCHER__

environment variables on macOS if available. */

static _PyInitError

config_init_program_name(_PyCoreConfig *config)

{

_PyInitError err;

/* If Py_SetProgramName() was called, use its value */

const wchar_t *program_name = _Py_path_config.program_name;

if (program_name != NULL) {

config->program_name = _PyMem_RawWcsdup(program_name);

if (config->program_name == NULL) {

return _Py_INIT_NO_MEMORY();

}

return _Py_INIT_OK();

}

#ifdef __APPLE__

/* On MacOS X, when the Python interpreter is embedded in an

application bundle, it gets executed by a bootstrapping script

that does os.execve() with an argv[0] that's different from the

actual Python executable. This is needed to keep the Finder happy,

or rather, to work around Apple's overly strict requirements of

the process name. However, we still need a usable sys.executable,

so the actual executable path is passed in an environment variable.

See Lib/plat-mac/bundlebuiler.py for details about the bootstrap

script. */

const char *p = _PyCoreConfig_GetEnv(config, "PYTHONEXECUTABLE");

if (p != NULL) {

err = CONFIG_DECODE_LOCALE(&config->program_name, p,

"PYTHONEXECUTABLE environment variable");

if (_Py_INIT_FAILED(err)) {

return err;

}

return _Py_INIT_OK();

}

#ifdef WITH_NEXT_FRAMEWORK

else {

const char* pyvenv_launcher = getenv("__PYVENV_LAUNCHER__");

if (pyvenv_launcher && *pyvenv_launcher) {

/* Used by Mac/Tools/pythonw.c to forward

* the argv0 of the stub executable

*/

err = CONFIG_DECODE_LOCALE(&config->program_name, pyvenv_launcher,

"__PYVENV_LAUNCHER__ environment variable");

if (_Py_INIT_FAILED(err)) {

return err;

}

return _Py_INIT_OK();

}

}

#endif /* WITH_NEXT_FRAMEWORK */

#endif /* __APPLE__ */

/* Use argv[0] if available and non-empty */

const _PyWstrList *argv = &config->argv;

if (argv->length >= 1 && argv->items[0][0] != L'\0') {

config->program_name = _PyMem_RawWcsdup(argv->items[0]);

if (config->program_name == NULL) {

return _Py_INIT_NO_MEMORY();

}

return _Py_INIT_OK();

}

/* Last fall back: hardcoded name */

#ifdef MS_WINDOWS

const wchar_t *default_program_name = L"python";

#else

const wchar_t *default_program_name = L"python3";

#endif

err = _PyCoreConfig_SetString(&config->program_name, default_program_name);

if (_Py_INIT_FAILED(err)) {

return err;

}

return _Py_INIT_OK();

}

static _PyInitError

config_init_executable(_PyCoreConfig *config)

{

assert(config->executable == NULL);

/* If Py_SetProgramFullPath() was called, use its value */

const wchar_t *program_full_path = _Py_path_config.program_full_path;

if (program_full_path != NULL) {

_PyInitError err = _PyCoreConfig_SetString(&config->executable,

program_full_path);

if (_Py_INIT_FAILED(err)) {

return err;