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bpo-36356: Fix _PyCoreConfig_Read() (GH-12454)

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Don't override parameters which are already set by the user.
This commit is contained in:
Victor Stinner 2019-03-20 03:11:38 +01:00 committed by GitHub
parent f29084d611
commit 4a1468e593
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 32 additions and 23 deletions
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55
Python/coreconfig.c
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@ -961,13 +961,15 @@ config_read_env_vars(_PyCoreConfig *config)
config->malloc_stats = 1;
}
wchar_t *path;
int res = _PyCoreConfig_GetEnvDup(config, &path,
L"PYTHONPATH", "PYTHONPATH");
if (res < 0) {
return DECODE_LOCALE_ERR("PYTHONPATH", res);
if (config->module_search_path_env == NULL) {
wchar_t *path;
int res = _PyCoreConfig_GetEnvDup(config, &path,
L"PYTHONPATH", "PYTHONPATH");
if (res < 0) {
return DECODE_LOCALE_ERR("PYTHONPATH", res);
}
config->module_search_path_env = path;
}
config->module_search_path_env = path;
if (config->use_hash_seed < 0) {
_PyInitError err = config_init_hash_seed(config);
@ -1689,18 +1691,20 @@ config_parse_cmdline(_PyCoreConfig *config, _PyCmdline *cmdline,
}
if (c == 'c') {
/* -c is the last option; following arguments
that look like options are left for the
command to interpret. */
size_t len = wcslen(_PyOS_optarg) + 1 + 1;
wchar_t *command = PyMem_RawMalloc(sizeof(wchar_t) * len);
if (command == NULL) {
return _Py_INIT_NO_MEMORY();
if (config->run_command == NULL) {
/* -c is the last option; following arguments
that look like options are left for the
command to interpret. */
size_t len = wcslen(_PyOS_optarg) + 1 + 1;
wchar_t *command = PyMem_RawMalloc(sizeof(wchar_t) * len);
if (command == NULL) {
return _Py_INIT_NO_MEMORY();
}
memcpy(command, _PyOS_optarg, (len - 2) * sizeof(wchar_t));
command[len - 2] = '\n';
command[len - 1] = 0;
config->run_command = command;
}
memcpy(command, _PyOS_optarg, (len - 2) * sizeof(wchar_t));
command[len - 2] = '\n';
command[len - 1] = 0;
config->run_command = command;
break;
}
@ -1708,9 +1712,11 @@ config_parse_cmdline(_PyCoreConfig *config, _PyCmdline *cmdline,
/* -m is the last option; following arguments
that look like options are left for the
module to interpret. */
config->run_module = _PyMem_RawWcsdup(_PyOS_optarg);
if (config->run_module == NULL) {
return _Py_INIT_NO_MEMORY();
config->run_module = _PyMem_RawWcsdup(_PyOS_optarg);
if (config->run_module == NULL) {
return _Py_INIT_NO_MEMORY();
}
}
break;
}
@ -1825,7 +1831,8 @@ config_parse_cmdline(_PyCoreConfig *config, _PyCmdline *cmdline,
if (config->run_command == NULL && config->run_module == NULL
&& _PyOS_optind < cmdline->argv.length
&& wcscmp(cmdline->argv.items[_PyOS_optind], L"-") != 0)
&& wcscmp(cmdline->argv.items[_PyOS_optind], L"-") != 0
&& config->run_filename == NULL)
{
config->run_filename = _PyMem_RawWcsdup(cmdline->argv.items[_PyOS_optind]);
if (config->run_filename == NULL) {
@ -2032,9 +2039,11 @@ config_from_cmdline(_PyCoreConfig *config, _PyCmdline *cmdline,
_PyCoreConfig_GetGlobalConfig(config);
err = config_init_program(config, cmdline);
if (_Py_INIT_FAILED(err)) {
return err;
if (config->program == NULL) {
err = config_init_program(config, cmdline);
if (_Py_INIT_FAILED(err)) {
return err;
}
}
err = config_parse_cmdline(config, cmdline, &need_usage);