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// Copyright 2017 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <Python.h>
#include <android-base/file.h>
#include <osdefs.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string>
static_assert(sizeof(double) == SIZEOF_DOUBLE);
static_assert(sizeof(float) == SIZEOF_FLOAT);
static_assert(sizeof(fpos_t) == SIZEOF_FPOS_T);
static_assert(sizeof(int) == SIZEOF_INT);
static_assert(sizeof(long) == SIZEOF_LONG);
static_assert(sizeof(long double) == SIZEOF_LONG_DOUBLE);
static_assert(sizeof(long long) == SIZEOF_LONG_LONG);
static_assert(sizeof(off_t) == SIZEOF_OFF_T);
static_assert(sizeof(pid_t) == SIZEOF_PID_T);
static_assert(sizeof(pthread_key_t) == SIZEOF_PTHREAD_KEY_T);
static_assert(sizeof(pthread_t) == SIZEOF_PTHREAD_T);
static_assert(sizeof(short) == SIZEOF_SHORT);
static_assert(sizeof(size_t) == SIZEOF_SIZE_T);
static_assert(sizeof(time_t) == SIZEOF_TIME_T);
static_assert(sizeof(uintptr_t) == SIZEOF_UINTPTR_T);
static_assert(sizeof(void *) == SIZEOF_VOID_P);
static_assert(sizeof(wchar_t) == SIZEOF_WCHAR_T);
static_assert(sizeof(_Bool) == SIZEOF__BOOL);
// TODO(b/141583221): stop leaks
const char *__asan_default_options() {
return "detect_leaks=0";
}
int main(int argc, char *argv[]) {
// PYTHONEXECUTABLE is only used on MacOs X, when the Python interpreter
// embedded in an application bundle. It is not sure that we have this use case
// for Android hermetic Python. So remove this environment variable to make
// our self-contained environment more strict.
// For user (.py) program, it can access hermetic .par file path through
// sys.argv[0].
unsetenv(const_cast<char *>("PYTHONEXECUTABLE"));
// Resolving absolute path based on argv[0] is not reliable since it may
// include something unusable, too bad.
// android::base::GetExecutablePath() also handles for Darwin/Windows.
std::string executable_path = android::base::GetExecutablePath();
std::string internal_path = executable_path + "/internal";
std::string stdlib_path = internal_path + "/stdlib";
PyStatus status;
PyConfig config;
PyConfig_InitPythonConfig(&config);
wchar_t *path_entry;
// Ignore PYTHONPATH and PYTHONHOME from the environment. Unless we're not
// running from inside the zip file, in which case the user may have
// specified a PYTHONPATH.
#ifdef ANDROID_AUTORUN
config.use_environment = 0;
config.module_search_paths_set = 1;
config.parse_argv = 0;
#endif
// Set the equivalent of PYTHONHOME internally.
config.home = Py_DecodeLocale(executable_path.c_str(), NULL);
if (config.home == NULL) {
fprintf(stderr, "Unable to parse executable name\n");
return 1;
}
#ifdef ANDROID_AUTORUN
// Execute the __main__.py script inside the zip file attached to our executable.
config.run_filename = wcsdup(config.home);
#endif
status = PyConfig_SetBytesArgv(&config, argc, argv);
if (PyStatus_Exception(status)) {
goto fail;
}
status = PyConfig_Read(&config);
if (PyStatus_Exception(status)) {
goto fail;
}
path_entry = Py_DecodeLocale(internal_path.c_str(), NULL);
if (path_entry == NULL) {
fprintf(stderr, "Unable to parse path\n");
return 1;
}
status = PyWideStringList_Append(&config.module_search_paths, path_entry);
if (PyStatus_Exception(status)) {
goto fail;
}
path_entry = Py_DecodeLocale(stdlib_path.c_str(), NULL);
if (path_entry == NULL) {
fprintf(stderr, "Unable to parse path\n");
return 1;
}
status = PyWideStringList_Append(&config.module_search_paths, path_entry);
if (PyStatus_Exception(status)) {
goto fail;
}
// Always enable Python "-S" option. We don't need site directories,
// everything's supposed to be hermetic.
config.site_import = 0;
// Always enable Python "-s" option. We don't need user-site directories,
// everything's supposed to be hermetic.
config.user_site_directory = 0;
config.write_bytecode = 0;
status = Py_InitializeFromConfig(&config);
if (PyStatus_Exception(status)) {
goto fail;
}
PyConfig_Clear(&config);
return Py_RunMain();
fail:
PyConfig_Clear(&config);
if (PyStatus_IsExit(status)) {
return status.exitcode;
}
Py_ExitStatusException(status);
}
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