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3 Commits
Author SHA1 Message Date
shadow-testandClaude Opus 5 06ccb4d818 Ship the Files tab container-side only
Four successive audits found the same thing: host filesystem paths crossing
IPC is where the criticals in this work live. The most recent one found the
`link(2)` upload reservation returning success against a *directory* (linking
into it, leaving permanent stray files, and via a symlink-to-directory writing
outside the validated write root), failing every upload permanently on any
filesystem without hard links, and the post-resolution credential check
weakened from a general rule to an eleven-name denylist.

Rather than fix that a fifth time, the Files tab ships as what it is good at:
a browser, viewer and renamer that never touches the host.

Removed: `upload_file_to_container`, `download_container_file`, and everything
that existed only for them — the whole reservation (`UPLOAD_RESERVATION_SCRIPT`,
`reserve_upload_destination`, the placeholder rollback, `exec_oneshot_as_within`
which had no other caller), `stream_container_file_to_host`, `ChannelReader`,
`save_to_host`, the download ceiling, and the collision marker with its
frontend contract. On the frontend: the upload button, the pane's
`onDragDropEvent` handler, both "Save to host…" affordances, `uploadPaths` /
`downloadFile` / the overwrite prompt, and `OverwriteConfirmModal`.
`lib/uploadErrors.ts` is now `lib/refusalText.ts` and keeps only the half that
turns any backend refusal into the sentence a person reads.

Kept, and not weakened: `upload_host_file_to_terminal` and
`download_container_backup`. They predate this work, their hardening is a real
improvement over main, and they are now the whole answer to "how do I get a
file in or out" — drop it on the Terminal, or Back up container. The drop gate
(`lib/dropTarget.ts`, `PaneVisibility`) is untouched.

`resolve_host_path` gets the general hidden-component rule back. Round 3
replaced it with `HOST_CREDENTIAL_DIRS`, which is allow-by-omission for the
rest of `$HOME`: `~/.local/bin` (write there and you own the user's next shell
command), `~/.password-store`, browser profiles and `~/.pki/nssdb` were all
reachable through a planted symlink with a visible name — verified against a
real home directory, and all five refused now. It over-catches `.pnpm` and
`~/.cache`; for two occasional callers that is the cheaper mistake, and the
refusal says which folder it resolved through.

Two defects fixed while in here:

  * A symlinked directory listed as empty. `find` defaults to `-P`, which does
    not follow a symlink even as the starting point, so `-mindepth 1` discarded
    the only match and a real directory rendered as "Empty directory" — a
    first-order defect now that browsing *is* the feature. `-H` follows the
    starting point and nothing else, so a loop is `ELOOP` rather than a walk
    that does not end; verified against a live container for a symlinked
    directory, a broken link and a loop. `find`'s errno for the loop case is
    now a sentence.
  * `finish_download`'s replace path fired on *any* rename failure with a
    destination present — a vanished partial, a permission error, a directory
    at the destination — and deleted the user's file to complete a move that
    could not complete. It is now fenced to Windows (where a rename onto an
    existing path genuinely fails) and to a partial that still exists.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GBq2rGum6GX7xXgsas1fDc
2026-08-23 17:05:56 -07:00
shadow-testandClaude Opus 5 d6f065a2b6 Fix HIGH and MEDIUM frontend defects
Files pane
- F16: a drag-out released back inside the app no longer re-imports its own
  staged copy over the container original. An in-flight flag (cleared from the
  drag plugin's `onEvent` channel, with a watchdog) suppresses the drop and the
  "Drop files into …" hint, and an exact staged-path filter is the second line
  of defence — the `path|size|modified` cache could otherwise write a
  minutes-old snapshot over a file an agent had since rewritten.
- F17: a slow upload/rename no longer yanks the user back to the directory the
  operation started in. Every operation captures its target path and re-lists
  only if the user is still there; failures go to the toast host either way.
- The grid keeps keyboard focus. Roving tabindex (one tab stop, not one per
  row) plus focus restore after navigation, rename commit/cancel and Escape.
- Transient failures now surface in `ToastHost` (z-[60], persistent aria-live)
  instead of a `role="alert"` 300 rows down a scroller or behind a modal
  overlay. The inline error is kept only for the listing failure.
- `navigate` is sequenced by generation; "Save to host…" sets `busy`.
- Grid a11y: column headers, a text affordance for folder vs file, a live
  region that is mounted empty and announces completion, Label-in-Name fixed.
- FileViewerModal: the blob URL is released only once its replacement exists;
  the preview is a focusable, named, scrollable region.

Native drop routing
- New `lib/dropTarget.ts`: the hit test now refuses a drop while any
  `[aria-modal="true"]` dialog or `[data-blocks-drop]` overlay is up, and
  checks z-order where the environment can answer it. Shared by FilesTab and
  TerminalView; App's shutdown overlay opts in.

Disk
- A partially failed reclaim says so in words ("… — 2 of 5 failed"), not by hue
  alone.
- The scan/reclaim race is closed: every mutation retires an in-flight scan, so
  a scan can no longer repaint a pre-reclaim report plus a clickable plan of
  objects that are gone. Scan is disabled while working; the status is a live
  region; a failed destructive action keeps its dialog open and reports there.
- The "unknown" layer count gets a screen-reader fallback; `--text-disabled`
  no longer carries live information.

Terminal / OAuth
- After the toast is dismissed, a truncated heuristic guess can no longer fill
  the slot that an exact OSC 8 or relay URL occupied — the detector remembers
  every exact URL and drops any candidate that is a strict prefix of one.
- The prompt is reachable by keyboard: Ctrl+Shift+O jumps to the default
  action, Escape dismisses, focus returns to the terminal, and auto-dismiss
  holds off while focus is inside. It deliberately does not steal focus.
- UrlToast renders through `ui/Button` and `--shadow-overlay`.

Elsewhere
- AuthBridgeRow: a pushed `auth-bridge-changed` status always outranks an older
  awaited toggle result.
- The last two ad-hoc byte formatters route through `lib/formatBytes`.

Contract for the backend agent: `upload_file_to_container` refusing to
overwrite must satisfy `isFileExistsError` in `src/lib/uploadErrors.ts` (marker
`FILE_EXISTS`) and accept an `overwrite` argument; the frontend turns that into
an `ui/Modal` Replace/Skip prompt rather than a raw error string.

Tests: 536 -> 627 passing. `npm run build` and `npx tsc --noEmit` green.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GBq2rGum6GX7xXgsas1fDc
2026-08-23 11:11:43 -07:00
shadow-testandClaude Opus 5 15e05e2197 Turn the Files tab into a real file manager
Rename, an in-app viewer for text and images, host-to-container drag and
drop, New folder, keyboard operation — plus the pre-existing bugs the new
surface would otherwise have been built on top of.

New Tauri commands (file_commands.rs, registered in lib.rs):

* rename_container_path — `mv -n -- <from> <parent>/<name>` through
  exec_oneshot_as, so the *exit code* is checked. exec_oneshot discards the
  status and interleaves stderr into stdout, which would have made a
  permission failure look like a success. `mv -n` on its own is not enough
  either: GNU coreutils makes its refusal to clobber silent and exits 0, so
  an explicit `test -e` on the destination is what turns a name clash into
  an error the user sees. `mv`'s own words are surfaced, since renames
  outside /workspace legitimately fail on permissions. The new name is
  validated in Rust (no `/`, no NUL, not "." / ".." / empty, ≤255 bytes) —
  it is user text going into argv, and a name with a separator would be a
  move rather than a rename.
* read_container_file — exact bytes via Docker's archive endpoint, returned
  as base64. Deliberately not exec_oneshot, which runs every chunk through
  String::from_utf8_lossy and merges stderr, so it would corrupt any
  non-UTF-8 file and could splice diagnostics into content. Base64 rather
  than Vec<u8> because Tauri serialises a byte vec as a JSON number array.
  Capped and truncation-reporting; the caller picks the cap (images get 5
  MiB against text's 1 MiB, being the kind that blows a text-sized budget)
  and Rust clamps it to 8 MiB regardless.
* create_container_directory — `mkdir` without -p, so a clash is an error
  rather than a silent success. Named for its siblings rather than the bare
  `create_directory` in the brief.

The tar-extraction half of download_container_file is now the shared
fetch_container_file() both commands use, and it abandons the transfer once
a capped read has what it needs.

Frontend:

* Single click selects, double click opens. Directory navigation moved onto
  double click too — a single click used to navigate, which made it
  impossible to select a directory in order to rename it. Rows are now
  focusable and the table is a real `grid`: Enter opens, F2 renames, arrows
  walk the rows. No outline suppression; the global :focus-visible ring is
  what shows focus.
* FileViewerModal (built on ui/Modal, the only correct dialog) renders text
  in a <pre> and images from a revocable blob: URL. tauri.conf.json's
  img-src had neither `data:` nor `blob:`, so an in-app image was blocked by
  CSP; `blob:` is added — revocable, and no megabytes of base64 in the DOM.
  The asset protocol stays disabled. Anything else gets a "Save to host"
  state instead of a broken preview, decided by extension and then by
  sniffing the bytes for NUL.
* Host drag-and-drop uses Tauri's native onDragDropEvent, mirroring
  TerminalView: HTML5 ondrop carries no paths and is blocked in the webview
  on Windows by dragDropEnabled, which the terminal needs. The listener is
  window-wide, so it routes by hit-testing the payload position (physical
  pixels, hence the devicePixelRatio divide) against the pane's rect — a
  hidden pane has a zero-size rect and never matches, which is what keeps
  this and the terminal's listener apart. enter/over/leave drive a drop
  highlight.
* Per-row Download is now "Save to host…"; directories no longer offer it.

Pre-existing bugs fixed:

* Uploaded files landed root:root with a 1970 mtime. tar::Header::new_gnu()
  zeroes uid/gid/mtime and Docker honours the header verbatim, so uploads
  were not writable by `claude`. All four single-file tar builds now go
  through build_single_file_tar() with the container user's ids, read from
  the container because entrypoint.sh remaps them to the host user on Unix
  and deliberately does not on Windows.
* Symlinked directories could not be opened: `find -printf '%y'` reports `l`.
  The listing now prints `%Y` as well, so is_directory dereferences and a
  new is_symlink carries what `%y` used to say. The row labels the link.
* upload_file_to_container had no size cap and did a synchronous fs::read on
  an async worker. Now 256 MiB (matching the terminal drop path) with the
  read and tar build in spawn_blocking, and the host mtime preserved.
* A directory passed to upload reached fs::read and produced an opaque "Is a
  directory". Rejected with an explanation instead — recursive upload is a
  larger feature than this panel needs.
* download_container_file wrote the *first tar entry*, so downloading a
  directory silently produced a garbage file. Non-regular entries are now an
  explicit error.

Tests: 46 new (33 frontend across FilesTab, useFileManager and filePreview;
12 Rust covering the find-output parser and the rename validator, neither of
which had any). 405 frontend / 297 Rust, both green.

No drag-out dependency was added — tauri-plugin-drag is not introduced and
OS drag-out is not attempted; that stays deferred, with "Save to host…" as
the way files leave the container.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GBq2rGum6GX7xXgsas1fDc
2026-08-23 08:30:48 -07:00