Addresses all four findings from the #251 review:
- Scaffolding no longer writes through repository-controlled symlinks.
The guard lives in hooks-config.ts (settingsWriteBlocker) so it also
covers quick-start/docker/ralph writers, not just the clone route:
refuses a symlinked .claude or settings.local.json, a .claude that is
a file, or one resolving outside the case. The clone route surfaces
the refusal as a user-visible warning, and the CLAUDE.md write checks
presence via lstat so a BROKEN repo-shipped symlink counts as present
(existsSync follows links and would have created the outside target).
- Failed-clone cleanup can no longer delete a concurrent winner's tree:
git clones into an attempt-owned temp sibling (.<name>.cloning-<rand>)
which is atomically renamed into place; the loser reports
DESTINATION_EXISTS and only ever removes its own temp dir.
- decodeURIComponent(url.pathname) is guarded: malformed percent-escapes
now come back as BAD_SYNTAX instead of an uncaught URIError 500.
- The git pool's waiter queue is bounded (CODEMAN_MAX_GIT_QUEUE, default
16): overflow answers BUSY immediately (HTTP 429 via RATE_LIMITED),
and queue time counts against the operation's own deadline.
Tests: hostile symlink fixture repo (route level), settingsWriteBlocker
units, concurrent same-destination race, temp-dir leak assertions,
percent-escape rejection, and a fake-git pool-bounds suite.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Adds an Add Case -> "Clone Repo" tab plus two endpoints, implementing
@DodgyBadger's proposal in #236: clone a public repository straight into
codeman-cases/<name> and register it as a normal local case.
POST /api/cases/clone is synchronous by design (request held open, bounded
by GIT_CLONE_TIMEOUT_MS): no job store, no polling, no cancellation
surface. Success broadcasts the usual case:created event, so the case
still appears when a proxy idle-timeout kills the request mid-clone.
POST /api/cases/clone-preflight runs `git ls-remote --symref` so the UI can
say, while the user is still typing, whether the URL is cloneable without
credentials, what its default branch is, and which branches/tags exist.
Core lives in src/git-clone.ts, split into a pure half (URL parse, argv/env,
ls-remote parse, stderr classification) and a thin IO half, so every
security decision is unit-testable without spawning anything:
- `<name>::<payload>` transports are refused as a family, not by name:
ext:: is the famous one, but any of them dispatches to git-remote-<name>
and turns a clone into arbitrary command execution.
- A leading `-` is refused AND every spawn puts `--` before the operands.
Either alone is one edit away from being a hole.
- argv arrays, never a shell. URLs carrying user:password@ are refused.
- gitNonInteractiveEnv() closes all four ways git can block on a prompt
with no terminal attached (terminal prompt, askpass/GUI, ssh, GCM).
HOME/PATH stay inherited, so a user's own credential helper or ssh agent
keeps working; Codeman itself collects and stores nothing.
- The timeout signals the process GROUP, since clone fans out into
git-remote-https/index-pack children that outlive a signal to the parent.
- Bounded output (redacted stderr tail, capped ls-remote stdout, 500 refs
each) and a global 2-op pool, so N large clones cannot exhaust the host.
Repository contents beat scaffolding: an existing CLAUDE.md is kept, hooks
are merged into whatever .claude/settings.local.json the repo shipped, and
a repo that ships its own Claude settings is reported back as a warning
(those hooks run locally as soon as a session starts there). A failed clone
removes only the directory the attempt created, and refuses a pre-existing
destination outright, so it can never squat on a case name.
Not admin-gated in multi-user mode, unlike /api/cases/link: it writes only
inside the caller's own case space. Local-path/file:// sources are the
exception and stay admin-only there.
UI: live verdict under the URL field, case name filled from the parsed repo
until the user types their own, branch/tag as a datalist of the remote's
real refs, optional shallow clone, and a Brain picker (installed CLIs only)
that points the Run button at the chosen agent. Starting a session stays
opt-in. The tab hides itself when the server reports no git.
Tests: the pure half exhaustively (every refusal has a case), plus real git
against a real local bare repo for clone/ref/timeout/cleanup, and a
route-level suite with unmocked fs that clones through the endpoint.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Codeman maintainer