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OrcaWinandOrca Worker
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* fix(windows): scan ports natively instead of encoded PowerShell Microsoft Defender for Endpoint scored the relay's Windows port scan as suspicious PowerShell plus network discovery (T1049). The command line was `-ExecutionPolicy Bypass -EncodedCommand <base64>` around a Get-NetTCPConnection/Get-Process join -- base64 next to a policy override is the highest-weighted token pair on a PowerShell command line, and netstat only ever ran as its fallback. Invert the chain. `netstat.exe -ano` is now the primary reader and the owning process name comes from the shared native process table, which exists to keep PID lookups off PowerShell. The payload survives only as a last resort, and without the override: execution policy gates script files, never `-Command`, so nothing needed it (verified: `-ExecutionPolicy Restricted -Command` runs). Drop `-p tcp` while inverting: on Windows that protocol name means IPv4 only, so as a primary reader it would have hidden every `[::]` listener the payload used to report. Names arrive as `sshd.exe` from the table and are published as `sshd`, keeping the sshd filter and old clients' rendering intact. Routes both spawns through runProcess, removing the file from the child_process and windowsHide ratchets. * fix(windows): read netstat state by shape and refuse a truncated table Review of the port-scan inversion found two ways the new primary path could be silently wrong, both of which would have kept the flagged PowerShell payload running on exactly the hosts this change targets. `LISTENING` is not in netstat.exe. It lives in System32\<locale>\netstat.exe.mui and MUI selection follows the UI language, so the pinned-locale env in relay-command-env.ts cannot reach it -- a German host prints `ABHOEREN` and the word test parsed zero rows. The zero-listeners guard then read that as a blocked reader and ran `Get-NetTCPConnection` every 12-30s forever, or returned nothing at all where PowerShell is also restricted. Keep the word as the fast path and, when it finds nothing over output that did contain TCP rows, re-read by shape: only a listening socket has no peer. Measured on this host across all four states present (LISTENING 47, ESTABLISHED 49, CLOSE_WAIT 29, TIME_WAIT 213): zero non-listening rows with a zero peer, zero listening rows without one, and the same 47 rows parse after substituting the German state words. Shape stays the fallback because `BOUND` also prints a zero peer. Truncation was invisible: createOutputSink discards overflow, ProcessResult carries no flag, so a capped read still exits 0 and its head still parses. netstat orders IPv4 TCP, then IPv6 TCP, then UDP, so a host with tens of thousands of TIME_WAIT rows would have lost every `[::]` listener -- the exact loss dropping `-p tcp` exists to prevent, and one the zero-listeners guard cannot see. Refuse the read instead. A `truncated` flag on the shared sink would be cleaner and is left as a follow-up rather than widened into this PR. Also: decline to wait on the shared process table once the request is aborted (it takes no signal and must not be cancelled for other callers); note the name lookup as best-effort, since a TTL-cached snapshot can hand a recycled PID its previous owner name; log once on either fall-through, because both are permanent and invisible when wrong; and drop a stderr assertion that any PowerShell autoload banner would redden. Correcting the cost claim in the previous commit: the aggregate win holds with the native addon (netstat 21ms vs the retired payload 860ms at 532 processes), not without it. The addon is optional, the snapshot TTL is 500ms and the scan cadence is 12-30s, so a relay with no active agent pane never warms its own cache and pays ~1.4s cold on the CIM path -- slower than what it replaced. * fix(windows): log the port-scan fall-through on the relay diagnostic stream Checked where this code actually runs before trusting the log. `console.warn` did reach a file, but relayLogLine is the right call and the reasoning is worth recording. `scanWindowsListeningPorts` runs only in the detached relay daemon: relay.ts returns early for --connect and --orca-cli, so PortScanHandler is reached only through runRelayDaemon, and both launchers start it detached with a log file (POSIX `> relay.log 2>&1`, Windows `1>relay.log 2>relay.err.log` via Win32_Process.Create). installRelayLogRotation then wraps both streams into relay.log, which is the file the documented diagnostics tail reads. Verified by installing the real rotation over a temp path and reading the file back. So the line surfaced -- but untimestamped, in a log whose format exists so reconnect flaps can be correlated with the events around them (#7773). relayLogLine is that format and the relay idiom in 41 other places, and "since when has this host been stuck on PowerShell" is most of what this line is for. The test spies on process.stderr to pin the stream and the ISO stamp rather than just asserting something was called, since a fall-through logged somewhere unread is the failure being guarded against. Also fixes a comment that ended its own block early: `relay-*/relay.log` in a doc comment contains `*/`. * fix(windows): keep the dominant zero-peer state when reading a localized netstat Shape alone promoted any zero-peer TCP row, not just listeners. `BOUND` and `CLOSED` print a zero peer too, and on a localized host their state words are exactly as unreadable as the listening one -- so a German host with listeners plus one BOUND socket published a phantom listener. Reachable on an English host too: with zero listeners a lone BOUND row is promoted AND, because the result is then non-empty, it suppresses the blocked-reader fall-through. Group the zero-peer rows by state word and keep only the largest group. A transient BOUND or CLOSED socket cannot outnumber the listeners (51 against 0 on this host), so this removes the class rather than special-casing the words, which would just be the localization bug again. An exact tie keeps every tied group rather than guessing -- no worse than reading shape alone. Verified against real netstat output: injecting a BOUND row into the localized capture leaves the result identical to the English answer (47 rows, no phantom 65001). The new test has teeth -- reverting the grouping fails it and nothing else. Corrects two claims that were slightly wrong: the docblock said shape was the fallback because BOUND prints a zero peer, which described the hazard without saying it was unhandled; and a test comment said an English host "never sees a bound socket", true only when it has at least one readable LISTENING row. Also gates the fall-through log per reason instead of per module, so a host that parses nothing today and truncates tomorrow reports both faults. Same one-shot cost, and the vocabulary is two fixed strings so the set cannot grow. That guard matters more than it looks: --log-file rotates stdout only, so the file stderr can land in is unrotated. * docs(windows): note the direction the zero-peer majority rule can fail in The docblock described the tie case and stopped there, which reads as a complete account of the limits when it is not: a majority rule inverts if the majority is wrong, and enough transient zero-peer sockets would publish the phantoms and drop the real listeners. Someone would reasonably have concluded the rule was safe in both directions. Trigger numbers and the repro stay in the PR discussion; the code only needs the reader to know the rule has a direction, and the hatch (defer to the PowerShell reader, which reads the state word instead of inferring it) since that is the part a future editor would otherwise re-derive. * ci(windows): run the real-netstat port scan suite in CI The win32 suite only self-skips off Windows, so it passed vacuously in every lane. Register it the way the cmd-shim suite is registered. * test(windows): lower both child-process ratchets to the ground this PR took Migrating the port scan off `node:child_process` onto `runProcess` drops `src/relay/windows-port-scan.ts` from both allowlists, so both offender counts fall by one. Each ratchet pins the count from below as well as above, so a pin left above reality fails and re-opens room for the next direct import to land for free. * docs(windows): qualify the no-PowerShell claim on the netstat scan The scan starts no PowerShell of its own, but no released relay carries the optional `windows-process-tree.node` addon (only dev-channel-win-build.yml builds it), so the shared process-table read falls back to a CIM scan that forks one `powershell.exe`. The EDR win is the removal of the `-EncodedCommand` / `-ExecutionPolicy Bypass` shape, not the elimination of PowerShell. Comment-only. * docs(windows): record the identity-reader follow-up and the perf table's addon attachWindowsProcessNames reads only `name`, so it should move to `readWindowsProcessIdentityTable` once #17866 lands -- on that PR's detailed reader it would open per-process handles for a field it discards. The reader does not exist on this branch, so the call stays as-is with the follow-up recorded rather than pulling #17866 in. The process-table perf table's two Toolhelp32 rows assume the optional `windows-process-tree.node` addon. The desktop bundles it; no released relay does, so on an SSH host the CIM row is the operative number. Comment-only. * docs(windows): state the CIM scan as the relay's normal path, not a fallback No released relay carries the optional `windows-process-tree.node` addon -- release-cut.yml has zero references to it and only dev-channel-win-build.yml builds it -- so the PowerShell CIM scan is what every SSH host runs. The call-site docstring read as a conditional fallback standalone. Comment-only. --------- Co-authored-by: Orca Worker <orca-worker@localhost>