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按源验证Python插件路径节边界

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源依据：LinuxCNC src/emc/pythonplugin/python_plugin.cc 的 configure() 按调用方 section 查找 TOPLEVEL，但 PATH_APPEND 固定从 PYTHON section 逐项读取并在 tilde expansion 失败时返回 PLUGIN_EXCEPTION_DURING_PATH_APPEND。

结论：wasm-safe python_plugin standalone probe 增加 REMAP/PYTHON section 分离边界，确认禁用 Python 时仍保留 LinuxCNC 的 INI 查找顺序和失败状态，不引入浏览器端 Python 执行。

检查：./test-linuxcnc-wasm-python-plugin-link.sh；./test-native.sh；./test-linuxcnc-source-link.sh。
This commit is contained in:
cnc
2026-06-06 12:53:40 +08:00
parent 64f336d6f2
commit 42e5b0784d
1 changed files with 38 additions and 0 deletions
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38
core/wasm_shims/pythonplugin/python_plugin_probe_main.cc
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@@ -198,6 +198,44 @@ int main() {
setenv("HOME", saved_home_value.c_str(), 1);
}
std::remove(path_append_ini);
const char *section_path_append_ini = "/tmp/cnc_sim_python_plugin_probe_section_path_append.ini";
{
FILE *file = std::fopen(section_path_append_ini, "w");
if (!file) {
std::remove(ini);
return 50;
}
std::fputs("[REMAP]\n"
"[PYTHON]\nTOPLEVEL = /tmp/cnc_sim_missing_python_section_toplevel.py\n"
"PATH_APPEND = ~/linuxcnc-python\n",
file);
std::fclose(file);
}
unsetenv("HOME");
// LinuxCNC source basis: python_plugin.cc configure() looks up TOPLEVEL in
// the caller-provided section, but PATH_APPEND entries are read from the
// fixed PYTHON section before initialize(); a PYTHON TOPLEVEL is ignored
// when the caller configures a different section.
if (plugin->configure(section_path_append_ini, "REMAP") != PLUGIN_EXCEPTION_DURING_PATH_APPEND) {
if (saved_home) {
setenv("HOME", saved_home_value.c_str(), 1);
}
std::remove(ini);
std::remove(section_path_append_ini);
return 51;
}
if (plugin->last_errmsg() != "bad path append") {
if (saved_home) {
setenv("HOME", saved_home_value.c_str(), 1);
}
std::remove(ini);
std::remove(section_path_append_ini);
return 52;
}
if (saved_home) {
setenv("HOME", saved_home_value.c_str(), 1);
}
std::remove(section_path_append_ini);
const char *plain_path_ini = "/tmp/cnc_sim_python_plugin_probe_plain_path.ini";
{
FILE *file = std::fopen(plain_path_ini, "w");