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src: do not run IsWindowsBatchFile on non-windows
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PR-URL: #55560
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Stefan Stojanovic <[email protected]>
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anonrig authored and ruyadorno committed Nov 27, 2024
1 parent 44f0799 commit ed2dda8
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Showing 3 changed files with 17 additions and 17 deletions.
2 changes: 2 additions & 0 deletions src/process_wrap.cc
Original file line number Diff line number Diff line change
Expand Up @@ -200,8 +200,10 @@ class ProcessWrap : public HandleWrap {
// batch files directly but is potentially insecure because arguments
// are not escaped (and sometimes cannot be unambiguously escaped),
// hence why they are rejected here.
#ifdef _WIN32
if (IsWindowsBatchFile(options.file))
err = UV_EINVAL;
#endif

// options.args
Local<Value> argv_v =
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2 changes: 2 additions & 0 deletions src/spawn_sync.cc
Original file line number Diff line number Diff line change
Expand Up @@ -769,8 +769,10 @@ Maybe<int> SyncProcessRunner::ParseOptions(Local<Value> js_value) {
// batch files directly but is potentially insecure because arguments
// are not escaped (and sometimes cannot be unambiguously escaped),
// hence why they are rejected here.
#ifdef _WIN32
if (IsWindowsBatchFile(uv_process_options_.file))
return Just<int>(UV_EINVAL);
#endif

Local<Value> js_args =
js_options->Get(context, env()->args_string()).ToLocalChecked();
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30 changes: 13 additions & 17 deletions src/util-inl.h
Original file line number Diff line number Diff line change
Expand Up @@ -540,25 +540,21 @@ constexpr std::string_view FastStringKey::as_string_view() const {
// Inline so the compiler can fully optimize it away on Unix platforms.
bool IsWindowsBatchFile(const char* filename) {
#ifdef _WIN32
static constexpr bool kIsWindows = true;
#else
static constexpr bool kIsWindows = false;
#endif // _WIN32
if (kIsWindows) {
std::string file_with_extension = filename;
// Regex to match the last extension part after the last dot, ignoring
// trailing spaces and dots
std::regex extension_regex(R"(\.([a-zA-Z0-9]+)\s*[\.\s]*$)");
std::smatch match;
std::string extension;

if (std::regex_search(file_with_extension, match, extension_regex)) {
extension = ToLower(match[1].str());
}

return !extension.empty() && (extension == "cmd" || extension == "bat");
std::string file_with_extension = filename;
// Regex to match the last extension part after the last dot, ignoring
// trailing spaces and dots
std::regex extension_regex(R"(\.([a-zA-Z0-9]+)\s*[\.\s]*$)");
std::smatch match;
std::string extension;

if (std::regex_search(file_with_extension, match, extension_regex)) {
extension = ToLower(match[1].str());
}

return !extension.empty() && (extension == "cmd" || extension == "bat");
#else
return false;
#endif // _WIN32
}

} // namespace node
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