0529bc246a
1 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Hongming Wang
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e955597a98 |
feat(chat_files): rewrite Download as HTTP-forward (RFC #2312, PR-D)
Mirrors PR-C's Upload migration: replaces the docker-cp tar-stream extraction with a streaming HTTP GET to the workspace's own /internal/file/read endpoint. Closes the SaaS gap for downloads — without this PR, GET /workspaces/:id/chat/download still returns 503 on Railway-hosted SaaS even after A+B+C+F land. Stacks: PR-A #2313 → PR-B #2314 → PR-C #2315 → PR-F #2319 → this PR. Why a single broad /internal/file/read instead of /internal/chat/download: Today's chat_files.go::Download already accepts paths under any of the four allowed roots {/configs, /workspace, /home, /plugins} — it's not strictly chat. Future PRs (template export, etc.) will reuse this endpoint via the same forward pattern; reusing avoids three near- identical handlers (one per domain) with duplicated path-safety logic. Path safety is duplicated on platform + workspace sides — defence in depth via two parallel checks, not "trust the workspace." Changes: * workspace/internal_file_read.py — Starlette handler. Validates path (must be absolute, under allowed roots, no traversal, canonicalises cleanly). lstat (not stat) so a symlink at the path doesn't redirect the read. Streams via FileResponse (no buffering). Mirrors Go's contentDispositionAttachment for Content-Disposition header. * workspace/main.py — registers GET /internal/file/read alongside the POST /internal/chat/uploads/ingest from PR-B. * scripts/build_runtime_package.py — adds internal_file_read to TOP_LEVEL_MODULES so the publish-runtime cascade rewrites its imports correctly. Also includes the PR-B additions (internal_chat_uploads, platform_inbound_auth) since this branch was rooted before PR-B's drift-gate fix; merge-clean alphabetic additions. * workspace-server/internal/handlers/chat_files.go — Download rewritten as streaming HTTP GET forward. Resolves workspace URL + platform_inbound_secret (same shape as Upload), builds GET request with path query param, propagates response headers (Content-Type / Content-Length / Content-Disposition) + body. Drops archive/tar + mime imports (no longer needed). Drops Docker-exec branch entirely — Download is now uniform across self-hosted Docker and SaaS EC2. * workspace-server/internal/handlers/chat_files_test.go — replaces TestChatDownload_DockerUnavailable (stale post-rewrite) with 4 new tests: - TestChatDownload_WorkspaceNotInDB → 404 on missing row - TestChatDownload_NoInboundSecret → 503 on NULL column (with RFC #2312 detail in body) - TestChatDownload_ForwardsToWorkspace_HappyPath → forward shape (auth header, GET method, /internal/file/read path) + headers propagated + body byte-for-byte - TestChatDownload_404FromWorkspacePropagated → 404 from workspace propagates (NOT remapped to 500) Existing TestChatDownload_InvalidPath path-safety tests preserved. * workspace/tests/test_internal_file_read.py — 21 tests covering _validate_path matrix (absolute, allowed roots, traversal, double- slash, exact-match-on-root), 401 on missing/wrong/no-secret-file bearer, 400 on missing path/outside-root/traversal, 404 on missing file, happy-path streaming with correct Content-Type + Content-Disposition, special-char escaping in Content-Disposition, symlink-redirect-rejection (lstat-not-stat protection). Test results: * go test ./internal/handlers/ ./internal/wsauth/ — green * pytest workspace/tests/ — 1292 passed (was 1272 before PR-D) Refs #2312 (parent RFC), #2308 (chat upload+download 503 incident). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> |