* fix(security): harden shell flag parsing, write roots, and formatters
- sandbox: recognize POSIX short-option clusters in shellCommandFlag (ZERO-ESC-02)
Extract payload commands behind combined short flags (-ec, -lc, -xc) and long
--command in dashCPayload and shellDashCPayload, preventing destructive
subcommands from bypassing recursive AST inspection and auto-allowing execution.
- tools: anchor write_file and edit_file to *os.Root descriptor (ZERO-TRAV-01)
Use openScopedWriteRoot and commitRootedFileContents to traverse parents relative
to the root descriptor handle, eliminating residual TOCTOU directory swaps.
- tools: harden format_on_write against untrusted execution and secret leakage
Pass --no-config to prettier to disable dynamic JS config execution, reject
formatter binaries resolved inside the workspace (formatterBinaryInWriteRoots),
and scrub credential-bearing environment variables before running formatters.
* fix(security): stop shell flag parsing at dash-dash and verify root descriptor identity
Stop recursing into shell `-c` payloads for tokens that follow the `--`
separator, which marks positional operands rather than options, in both
shellDashCPayload (text detector) and dashCPayload (AST analyzer). This
prevents `bash -- -ec '...'` from being classified on a command the shell
never runs as a command string.
Verify the identity of the *os.Root descriptor returned by openScopedWriteRoot
against a pre-open os.Stat of the resolved root, closing the check-to-use
window opened by os.OpenRoot re-resolving the path. A root substituted for a
symlink or a different directory is refused and the descriptor closed.
Regression tests fail on the unfixed code:
- TestShellDashCPayloadStopsAtDashDash, TestDetectInteractiveCommandAllowsNonInteractive
- TestAnalyzeCommand (`bash -- -ec ...` must stay non-interactive/non-destructive)
- TestOpenScopedWriteRootRejectsSubstitutedRoot
Bureau: desk-pr-1066
* fix(tools): relax symlink resolution error handling on host formatters and clean up test directory
* fix(security): anchor write preimage on root descriptor and report skipped formatters
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Co-authored-by: hazyhaar <[email protected]>
