CodeQL flagged 21 cpp/command-line-injection alerts in tools/editor/.
All matched the same pattern: build a shell command string from
argv[0] + a user-supplied path, then std::system() it. Even though
the threat model (user invokes their own CLI on their own machine)
makes the alert mostly academic, the std::system path is also
fragile — paths with spaces, quotes, or shell metacharacters
silently break.
Add tools/editor/cli_subprocess.{hpp,cpp} exposing a single
runChild(argv0, args, quiet=false) that uses posix_spawn on POSIX
and CreateProcess on Windows. No shell, argv passed verbatim,
optional stdout/stderr redirect to /dev/null (NUL on Windows).
Refactor 14 call sites across cli_convert.cpp, cli_data_tree.cpp,
cli_format_validate.cpp, cli_items.cpp, cli_random.cpp,
cli_repair.cpp, cli_spawn_audit.cpp.
Also fix two cpp/integer-multiplication-cast-to-long alerts:
- cli_gen_texture.cpp:3049 — seeds.reserve grid-size product
- cli_convert_single.cpp:224 — vector size for DBC record block
Both now widen one operand to size_t before multiplying.
Moves the five single-file format converters (--convert-m2,
--convert-wmo, --convert-dbc-json, --convert-json-dbc,
--convert-blp-png) out of two dedicated post-loop blocks in
main.cpp into a new cli_convert_single.{hpp,cpp} module. The
batch wrappers in cli_convert.cpp keep working — they shell
out to wowee_editor with these flags.
main.cpp shrinks by ~335 lines (10,979 → 10,644). The two
trailing for-loops were dead code after wiring the dispatcher
into the main loop, so they're gone too.
