Files
ocp/server.mjs
T
dtzp555-maxGitHubtaodengClaude <claude-opus> <noreply@anthropic.com>
3322d7bdae feat(tui): per-path concurrency limit + /health observability (PR-B) (#139)
Two P1 audit fixes for the TUI subscription-pool bridge (ADR 0007). The
default path (CLAUDE_TUI_MODE unset) is unchanged except the additive
/health `tui` block (enabled:false when off).

C-4 — TUI path had NO concurrency bound. The global MAX_CONCURRENT gate
lives in spawnClaudeProcess (the -p/stream-json path); callClaudeTui never
calls it — it calls runTuiTurn, which cold-boots a full interactive claude
in tmux. So N concurrent TUI requests spawned N simultaneous cold boots (a
family burst of 5 on a Pi 4 = OOM risk + subscription rate-limit pressure).
Adds an independent in-process limiter (lib/tui/semaphore.mjs, TuiSemaphore)
gating callClaudeTui: OCP_TUI_MAX_CONCURRENT (default 2 — a TUI turn is heavy:
per-request cold-boot + up to 120s wallclock). Queues rather than rejects
(mirrors MAX_CONCURRENT intent), with a bounded wait queue (default 32x the
limit) → tui_queue_full (503) on overflow rather than unbounded growth. The
slot releases in a finally, so PR-A's honesty-gate throws / timeouts / paste
failures never leak a slot.

C-5 — no operator-visible TUI drift surface. The tui_entrypoint_mismatch
warning only reached journald; after the 6/15 flip a silent sdk-cli drift
(the documented top risk) would drain metered credits invisibly. Adds an
additive `tui` block to /health: { enabled, entrypointMode, lastEntrypoint,
entrypointMismatches, inflight, queued, maxConcurrent }. lastEntrypoint /
entrypointMismatches are recorded in callClaudeTui (same mismatch branch the
journald warning covers); inflight/queued come from the C-4 semaphore.

ALIGNMENT (Class B): cli.js does NOT perform this operation — both the TUI
path and /health are OCP-owned, so no cli.js citation applies. /health is a
grandfathered B.2 endpoint (ADR 0006, frozen at v3.16.4). The response-shape
change is authorized by the ADR 0007 PR-B amendment added in this commit and
is behaviour-preserving: the `tui` block is NEW fields only — no existing
/health field is changed, renamed, removed, or re-typed, and no existing
semantics change, so existing consumers (dashboard, ocp-connect, monitoring)
are unaffected. Per ALIGNMENT.md's grandfather provision, an additive
behaviour-preserving change to a grandfathered B.2 endpoint is authorized by
an ADR; ADR 0007 is the authority for the TUI observability surface. No
Class A forwarding path, no alignment.yml, no models.json touched — alignment
blacklist is unaffected (zero new network tokens).

Tests: 11 new (lib/tui/semaphore.mjs is importable, so the semaphore + the
two pure /health helpers are tested directly): limit=1 serializes two
overlapping calls; limit=2 runs two + queues the third; slot released on
throw; bounded queue → tui_queue_full; mismatch counter increments on
cli→other drift; auto mode never counts a mismatch; /health tui block shape
+ live inflight/queued. npm test: 235 passed, 0 failed (was 224).

Co-authored-by: dtzp555 <dtzp555@gmail.com>
Co-authored-by: Claude <claude-opus> <noreply@anthropic.com>
2026-06-10 21:54:07 +10:00

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#!/usr/bin/env node
/**
* openclaw-claude-proxy — OpenAI-compatible proxy for Claude CLI
*
* Translates OpenAI chat/completions requests into `claude --output-format stream-json` CLI calls,
* letting you use your Claude Pro/Max subscription as an OpenClaw model provider.
*
* Timeout design: single CLAUDE_TIMEOUT (default 600s / 10 min).
* No separate first-byte or idle timeout — Claude tool-use causes long pauses
* in the token stream (30s-5min) that make fine-grained timeouts unreliable.
* This matches LiteLLM, OpenAI SDK, and other major LLM proxies.
*
* Env vars:
* CLAUDE_PROXY_PORT — listen port (default: DEFAULT_PORT from lib/constants.mjs)
* CLAUDE_BIN — path to claude binary (default: auto-detect)
* CLAUDE_TIMEOUT — per-request timeout in ms (default: 600000)
* CLAUDE_ALLOWED_TOOLS — comma-separated tools to allow (default: expanded set)
* CLAUDE_SKIP_PERMISSIONS — "true" to bypass all permission checks (default: false)
* CLAUDE_SYSTEM_PROMPT — system prompt appended to all requests
* CLAUDE_MCP_CONFIG — path to MCP server config JSON file
* CLAUDE_SESSION_TTL — session TTL in ms (default: 3600000 = 1h)
* CLAUDE_MAX_CONCURRENT — max concurrent claude processes, -p/stream-json path (default: 8)
* OCP_TUI_MAX_CONCURRENT — max concurrent interactive TUI turns, TUI-mode path (default: 2)
* CLAUDE_BREAKER_THRESHOLD — failures in window before circuit opens (default: 6)
* CLAUDE_BREAKER_COOLDOWN — base ms to wait before retrying after circuit opens (default: 120000)
* CLAUDE_BREAKER_WINDOW — sliding window duration in ms (default: 300000 = 5min)
* CLAUDE_BREAKER_HALF_OPEN_MAX — max concurrent probes in half-open state (default: 2)
* PROXY_API_KEY — Bearer token for API auth (optional)
* CLAUDE_HEARTBEAT_INTERVAL — SSE heartbeat interval in ms on streaming path (default: 0 = disabled)
*/
import { createServer } from "node:http";
import { spawn, execFileSync } from "node:child_process";
import { randomUUID, timingSafeEqual } from "node:crypto";
import { readFileSync, readdirSync, accessSync, existsSync, constants, chmodSync, statSync } from "node:fs";
import { fileURLToPath } from "node:url";
import { dirname, join } from "node:path";
import { homedir } from "node:os";
import { validateKey, recordUsage, getUsageByKey, getUsageTimeline, getRecentUsage, createKey, listKeys, revokeKey, closeDb, checkQuota, updateKeyQuota, getKeyQuota, findKey, cacheHash, getCachedResponse, setCachedResponse, clearCache, getCacheStats, hasCacheControl, singleflight, getInflightStats } from "./keys.mjs";
import { DEFAULT_PORT } from "./lib/constants.mjs";
import { isLoopbackBind } from "./lib/net.mjs";
import { runTuiTurn, reapStaleTuiSessions } from "./lib/tui/session.mjs";
import { detectTuiUpstreamError } from "./lib/tui/transcript.mjs";
import { TuiSemaphore, recordTuiEntrypoint, buildTuiHealthBlock } from "./lib/tui/semaphore.mjs";
const __dirname = dirname(fileURLToPath(import.meta.url));
const _pkg = JSON.parse(readFileSync(join(__dirname, "package.json"), "utf8"));
const modelsConfig = JSON.parse(readFileSync(join(__dirname, "models.json"), "utf8"));
// ── Resolve claude binary ───────────────────────────────────────────────
// Priority: CLAUDE_BIN env > well-known paths > nvm/fnm/asdf user-local
// installs > which lookup. Fail-fast if not found — never start with an
// unresolvable binary.
function _listVersionDirs(parent) {
try { return readdirSync(parent); } catch { return []; }
}
function _collectNodeManagerCandidates(home) {
if (!home) return [];
const out = [];
// nvm: $HOME/.nvm/versions/node/<version>/bin/claude
const nvmRoot = join(home, ".nvm/versions/node");
for (const v of _listVersionDirs(nvmRoot)) {
out.push(join(nvmRoot, v, "bin/claude"));
}
// nvm default alias: resolve $HOME/.nvm/aliases/default if it points to a version
try {
const aliasFile = join(home, ".nvm/aliases/default");
const aliasVer = readFileSync(aliasFile, "utf8").trim();
if (aliasVer) {
const direct = join(nvmRoot, aliasVer, "bin/claude");
if (!out.includes(direct)) out.unshift(direct);
}
} catch {}
// fnm: $HOME/.fnm/node-versions/<version>/installation/bin/claude
const fnmRoot = join(home, ".fnm/node-versions");
for (const v of _listVersionDirs(fnmRoot)) {
out.push(join(fnmRoot, v, "installation/bin/claude"));
}
// asdf: $HOME/.asdf/installs/nodejs/<version>/bin/claude
const asdfRoot = join(home, ".asdf/installs/nodejs");
for (const v of _listVersionDirs(asdfRoot)) {
out.push(join(asdfRoot, v, "bin/claude"));
}
// npm prefix-relocated: $HOME/.npm-global/bin/claude
out.push(join(home, ".npm-global/bin/claude"));
return out;
}
function resolveClaude() {
if (process.env.CLAUDE_BIN) {
try {
accessSync(process.env.CLAUDE_BIN, constants.X_OK);
return process.env.CLAUDE_BIN;
} catch {
console.error(`FATAL: CLAUDE_BIN="${process.env.CLAUDE_BIN}" is set but not executable.`);
process.exit(1);
}
}
const home = process.env.HOME || "";
const candidates = [
"/opt/homebrew/bin/claude",
"/usr/local/bin/claude",
"/usr/bin/claude",
join(home, ".local/bin/claude"),
..._collectNodeManagerCandidates(home),
];
for (const p of candidates) {
try { accessSync(p, constants.X_OK); console.warn(`[init] CLAUDE_BIN not set, resolved to ${p}`); return p; } catch {}
}
try {
const resolved = execFileSync("which", ["claude"], { encoding: "utf8", timeout: 5000 }).trim();
if (resolved) { console.warn(`[init] CLAUDE_BIN not set, resolved via which: ${resolved}`); return resolved; }
} catch {}
console.error(
"FATAL: claude binary not found.\n" +
" Set CLAUDE_BIN=/path/to/claude or ensure claude is in PATH.\n" +
" Hint: if you use nvm/fnm/asdf, set CLAUDE_BIN to the absolute path\n" +
" shown by `which claude` in your interactive shell.\n" +
" Checked: " + candidates.join(", ")
);
process.exit(1);
}
// ── OCP system prompt wrapper (Phase 6c port — ADR 0009 Amendment 1 analogue) ─
// Injected via `--system-prompt` flag, replacing claude CLI's default system
// prompt (which normally includes cwd, OS, tool descriptions, and git status —
// all irrelevant and potentially misleading when the model is accessed via the
// OCP HTTP proxy).
//
// Authority: claude CLI § --system-prompt (ported from OLP, verified v2.1.104;
// behavior stable through v2.1.158 — OLP ADR 0009 Amendment 1 §
// "OLP system prompt wrapper"; ported to OCP 2026-05-30).
// Reference: https://github.com/dtzp555-max/olp commit 97e7d16 (Phase 6c)
const OCP_SYSTEM_PROMPT_WRAPPER = `You are accessed via the OCP HTTP proxy. You do NOT have access to any local filesystem, working directory, shell, git status, or machine environment. Do not infer or invent such information from any context you observe. Respond only based on the conversation provided.`;
// Build the full system-prompt string: OCP_SYSTEM_PROMPT_WRAPPER prepended,
// then any system-role messages from the request appended (separated by blank line).
// ADR 0009 Amendment 1 analogue § "OLP system prompt wrapper".
function extractSystemPrompt(messages) {
const systemMessages = (messages ?? []).filter(m => m.role === "system");
if (systemMessages.length === 0) {
return OCP_SYSTEM_PROMPT_WRAPPER;
}
const clientContent = systemMessages.map(m =>
contentToText(m.content)
).join("\n\n");
return `${OCP_SYSTEM_PROMPT_WRAPPER}\n\n${clientContent}`;
}
// ── NDJSON line buffer parser (Phase 6c port) ─────────────────────────────
// Splits a buffered string on newlines, returning complete parsed events
// plus the trailing incomplete line as `remainder` for the next data chunk.
//
// Authority: claude CLI § --output-format stream-json (ported from OLP, verified v2.1.104;
// behavior stable through v2.1.158; each event is a newline-terminated JSON object on stdout).
// Reference: OLP lib/providers/anthropic.mjs parseStreamJsonLines (commit 97e7d16).
function parseStreamJsonLines(buffered) {
const lines = buffered.split("\n");
const remainder = lines.pop(); // last element is the incomplete trailing line
const events = [];
for (const line of lines) {
const trimmed = line.trim();
if (trimmed === "") continue;
try {
events.push(JSON.parse(trimmed));
} catch {
console.error("[claude] NDJSON parse error on line:", trimmed.slice(0, 120));
events.push({ type: "parse_error", raw: trimmed });
}
}
return { events, remainder: remainder ?? "" };
}
// ── NDJSON event → text content extractor (Phase 6c port) ────────────────
// Maps claude CLI stream-json NDJSON events to { text, stop, error } signals.
// Returns:
// { text: string } — content delta to forward
// { stop: true } — terminal event (emit finish_reason=stop)
// { error: string } — error event (emit error stop)
// null — consumed event (log/ignore)
//
// Authority: claude CLI § --output-format stream-json (ported from OLP, verified v2.1.104;
// behavior stable through v2.1.158).
// Reference: OLP lib/providers/anthropic.mjs anthropicStreamJsonEventToIR (commit 97e7d16).
//
// @param {object} event — parsed NDJSON event
// @param {boolean} isFirstDelta — true if no content has been yielded yet
function parseStreamJsonEvent(event, isFirstDelta) {
const t = event?.type;
// system/* — first-event init + other system meta (api_retry etc.)
if (t === "system") return null;
// user — echo of user message; consumed
if (t === "user") return null;
// stream_event — contains nested content_block_delta
if (t === "stream_event") {
const inner = event.event ?? event;
if (inner?.type === "content_block_delta" && inner.delta?.type === "text_delta") {
return { text: inner.delta.text ?? "" };
}
// Other stream_event sub-types (content_block_start, message_delta, etc.) — consumed
return null;
}
// assistant — aggregate message (fallback when no prior content_block_delta seen)
// Empirically (claude CLI without --include-partial-messages, verified v2.1.104 through v2.1.158): fast/short
// responses may emit ONLY the aggregate assistant event, no content_block_delta events.
// If isFirstDelta is true, extract text here; otherwise it's a duplicate, ignore.
// Reference: OLP commit 65f945c (assistant-aggregate fallback, fold-in).
if (t === "assistant") {
if (isFirstDelta) {
const blocks = event.message?.content;
if (Array.isArray(blocks)) {
const text = blocks
.filter(b => b && b.type === "text" && typeof b.text === "string")
.map(b => b.text)
.join("");
if (text) return { text };
}
}
return null;
}
// result — terminal event
if (t === "result") {
if (event.is_error === true) {
return { error: event.error_message ?? event.result ?? "claude returned is_error" };
}
return { stop: true };
}
// rate_limit_event / usage — log for observability, don't forward
if (t === "rate_limit_event" || t === "usage") {
logEvent("info", "claude_stream_event", { type: t, data: JSON.stringify(event).slice(0, 200) });
return null;
}
// control_request — per Anthropic stream-json docs
if (t === "control_request") {
console.error("[claude] stream_json control_request event (ignored):", JSON.stringify(event).slice(0, 120));
return null;
}
// parse_error — already logged by parseStreamJsonLines
if (t === "parse_error") return null;
// Unknown event type — log + skip; future-proof for new claude CLI events
if (t !== undefined) {
console.error("[claude] unknown stream_json event type:", t);
}
return null;
}
// ── Configuration ───────────────────────────────────────────────────────
// Settings marked with `let` can be changed at runtime via PATCH /settings.
const PORT = parseInt(process.env.CLAUDE_PROXY_PORT || String(DEFAULT_PORT), 10);
const CLAUDE = resolveClaude();
let TIMEOUT = parseInt(process.env.CLAUDE_TIMEOUT || "600000", 10);
const PROXY_API_KEY = process.env.PROXY_API_KEY || "";
const SKIP_PERMISSIONS = process.env.CLAUDE_SKIP_PERMISSIONS === "true";
const ALLOWED_TOOLS = (process.env.CLAUDE_ALLOWED_TOOLS ||
"Bash,Read,Write,Edit,Glob,Grep,WebSearch,WebFetch,Agent"
).split(",").map(s => s.trim()).filter(Boolean);
const SYSTEM_PROMPT = process.env.CLAUDE_SYSTEM_PROMPT || "";
const MCP_CONFIG = process.env.CLAUDE_MCP_CONFIG || "";
let SESSION_TTL = parseInt(process.env.CLAUDE_SESSION_TTL || "3600000", 10);
let MAX_CONCURRENT = parseInt(process.env.CLAUDE_MAX_CONCURRENT || "8", 10);
const BREAKER_THRESHOLD = parseInt(process.env.CLAUDE_BREAKER_THRESHOLD || "6", 10);
const BREAKER_COOLDOWN = parseInt(process.env.CLAUDE_BREAKER_COOLDOWN || "120000", 10);
const BREAKER_WINDOW = parseInt(process.env.CLAUDE_BREAKER_WINDOW || "300000", 10);
const BREAKER_HALF_OPEN_MAX = parseInt(process.env.CLAUDE_BREAKER_HALF_OPEN_MAX || "2", 10);
const HEARTBEAT_INTERVAL = parseInt(process.env.CLAUDE_HEARTBEAT_INTERVAL || "0", 10);
const BIND_ADDRESS = process.env.CLAUDE_BIND || "127.0.0.1";
const NO_CONTEXT = process.env.CLAUDE_NO_CONTEXT === "true";
const AUTH_MODE = process.env.CLAUDE_AUTH_MODE || (PROXY_API_KEY ? "shared" : "none");
const ADMIN_KEY = process.env.OCP_ADMIN_KEY || "";
const PROXY_ANONYMOUS_KEY = process.env.PROXY_ANONYMOUS_KEY || "";
// When set to "1", advertise PROXY_ANONYMOUS_KEY in the public /health body so
// remote `ocp-connect` devices can zero-config auto-discover it (issue #12 §14 Path A).
// Default OFF: /health is unauthenticated, so advertising hands the shared key to any
// LAN-reachable device (issue #109 P0). Localhost callers always see it regardless,
// since localhost is already fully trusted by the auth path.
const ADVERTISE_ANON_KEY = process.env.PROXY_ADVERTISE_ANON_KEY === "1";
let CACHE_TTL = parseInt(process.env.CLAUDE_CACHE_TTL || "0", 10); // 0 = disabled, value in ms
// ── TUI-mode (subscription-pool bridge) — opt-in; default OFF ───────────
// When ON: requests are served by spawning interactive `claude` (no -p / no
// --output-format) so cc_entrypoint=cli (subscription pool). Responses are
// buffered then replayed as chunked SSE. Streaming is always buffered here.
// Authority: docs/adr/0007-tui-interactive-mode.md
// SECURITY: TUI-mode is SINGLE-USER ONLY. Never enable on a multi-user OCP
// (guest prompts would run claude with operator filesystem access).
const TUI_MODE = process.env.CLAUDE_TUI_MODE === "true";
const TUI_WALLCLOCK_MS = parseInt(process.env.CLAUDE_TUI_WALLCLOCK_MS || "120000", 10);
const TUI_CWD = process.env.OCP_TUI_CWD || `${process.env.HOME}/.ocp-tui/work`;
const TUI_HOME = process.env.OCP_TUI_HOME || process.env.HOME;
const TUI_ENTRYPOINT = process.env.OCP_TUI_ENTRYPOINT || "cli"; // cli|auto|off — see ADR 0007
// Independent concurrency bound for the TUI path (audit C-4). Default 2: a TUI turn is
// HEAVY (per-request cold-boot of a tmux+claude session + up to TUI_WALLCLOCK_MS=120s of
// wallclock), so a small host (e.g. a Pi 4 serving a family) cannot run many at once
// without OOM + multiplied subscription rate-limit pressure. This is NOT the global
// MAX_CONCURRENT gate (that lives in spawnClaudeProcess, the -p/stream-json path, which
// callClaudeTui never reaches). See ADR 0007 PR-B amendment + lib/tui/semaphore.mjs.
const TUI_MAX_CONCURRENT = parseInt(process.env.OCP_TUI_MAX_CONCURRENT || "2", 10);
const tuiSemaphore = new TuiSemaphore(TUI_MAX_CONCURRENT);
// Operator-visible TUI drift surface (audit C-5). lastEntrypoint + entrypointMismatches
// let the operator poll /health to catch a silent metered-pool drift (the audit's top
// risk: after the 6/15 flip a TTY-loss could flip cc_entrypoint cli→sdk-cli and drain
// metered credits invisibly — the warning currently only reaches journald).
const tuiStats = {
lastEntrypoint: null, // last observed cc_entrypoint from the transcript ("cli" | "sdk-cli" | null)
entrypointMismatches: 0, // count of cli-expected-but-got-other turns
};
// SECURITY fail-loud: TUI-mode is incompatible with any configuration that allows
// non-operator prompts to reach the interactive claude session. Three cases:
// 1. AUTH_MODE=multi — guest/anonymous keys can submit prompts.
// 2. a non-loopback BIND_ADDRESS — server is network-exposed; any reachable peer
// can send prompts unless per-request trust is in place. Override with
// OCP_TUI_ALLOW_LAN=1 ONLY if you have a separate network-layer trust (firewall, VPN).
// 3. PROXY_ANONYMOUS_KEY set — anonymous callers can submit prompts without a key.
// In all three cases TUI runs interactive claude with the OPERATOR's full filesystem
// access — home is NOT isolation. Refuse to boot. See ADR 0007.
if (TUI_MODE && AUTH_MODE === "multi") {
console.error(
"FATAL: CLAUDE_TUI_MODE=true is incompatible with CLAUDE_AUTH_MODE=multi.\n" +
" TUI runs interactive claude with the operator's filesystem access, so a guest/anonymous\n" +
" prompt could read operator data. TUI-mode is single-user only until B-path isolation lands.\n" +
" See docs/adr/0007-tui-interactive-mode.md. Refusing to start."
);
process.exit(1);
}
if (TUI_MODE && !isLoopbackBind(BIND_ADDRESS) && process.env.OCP_TUI_ALLOW_LAN !== "1") {
console.error(
`FATAL: CLAUDE_TUI_MODE=true with a non-loopback CLAUDE_BIND (${BIND_ADDRESS}) is unsafe.\n` +
" TUI runs interactive claude with operator filesystem access; network-exposed without\n" +
" per-request isolation means any reachable peer could drive the operator's claude session.\n" +
" Either bind to 127.0.0.1 (default) or set OCP_TUI_ALLOW_LAN=1 if you have a\n" +
" separate network-layer trust (firewall/VPN). See docs/adr/0007-tui-interactive-mode.md."
);
process.exit(1);
}
if (TUI_MODE && PROXY_ANONYMOUS_KEY) {
console.error(
"FATAL: CLAUDE_TUI_MODE=true with PROXY_ANONYMOUS_KEY set is unsafe.\n" +
" TUI runs interactive claude with operator filesystem access; anonymous callers\n" +
" could drive the operator's claude session without a named key.\n" +
" Remove PROXY_ANONYMOUS_KEY or disable TUI-mode. See docs/adr/0007-tui-interactive-mode.md."
);
process.exit(1);
}
if (PROXY_ANONYMOUS_KEY && AUTH_MODE !== "multi") {
console.warn("WARNING: PROXY_ANONYMOUS_KEY is set but AUTH_MODE is not 'multi' — anonymous key will be ignored");
}
if (AUTH_MODE === "shared" && !PROXY_API_KEY) {
console.warn("WARNING: AUTH_MODE=shared but PROXY_API_KEY is not set — all requests will pass unauthenticated");
}
const VERSION = _pkg.version;
const START_TIME = Date.now();
// ── Structured logging helper ───────────────────────────────────────────
function logEvent(level, event, data = {}) {
const entry = { ts: new Date().toISOString(), level, event, ...data };
if (level === "error" || level === "warn") {
console.error(JSON.stringify(entry));
} else {
console.log(JSON.stringify(entry));
}
}
// ── Startup file-mode reconciliation ───────────────────────────────────
// Idempotently tightens OCP credential-bearing files to 700/600 so that
// existing installs (created before this fix) are hardened on next restart.
// Wrapped in try/catch — chmod failure must never crash startup.
// Does NOT touch systemd units or launchd plists; those are managed by setup.mjs.
function _tightenFileModesIfPossible() {
const ocpDir = join(homedir(), ".ocp");
const targets = [
{ path: ocpDir, mode: 0o700, label: "~/.ocp (dir)" },
{ path: join(ocpDir, "admin-key"), mode: 0o600, label: "~/.ocp/admin-key" },
{ path: join(ocpDir, "ocp.db"), mode: 0o600, label: "~/.ocp/ocp.db" },
];
let tightened = 0;
let alreadyOk = 0;
for (const { path, mode, label } of targets) {
try {
const st = statSync(path);
const current = st.mode & 0o777;
if (current !== mode) {
chmodSync(path, mode);
tightened++;
} else {
alreadyOk++;
}
} catch (e) {
if (e.code !== "ENOENT") {
// File exists but chmod failed (e.g. EPERM) — log and move on
logEvent("warn", "file_mode_tighten_failed", { path: label, error: e.message });
}
// ENOENT is fine — file doesn't exist yet
}
}
if (tightened > 0) {
logEvent("info", "file_modes_tightened", { tightened, alreadyOk });
}
}
_tightenFileModesIfPossible();
// ── Circuit breaker (DISABLED) ──────────────────────────────────────────
// Disabled: CLI proxy has its own retry logic, and the breaker was causing
// cascading failures — once API got briefly slow, ALL agents lost connectivity
// for 120s+ due to the breaker rejecting every request.
// The timeout/failure tracking stubs below are kept as no-ops so callers
// don't need to be changed.
function breakerRecordSuccess(_cliModel) {}
function breakerRecordTimeout(_cliModel) {}
function getBreakerState(_cliModel) { return { state: "closed" }; }
function getBreakerSnapshot() { return { _note: "circuit breaker disabled" }; }
// Legacy constants kept for /health display
const _BREAKER_DISABLED_NOTE = "disabled";
/* Original breaker code removed — see git history for v2.5.0 implementation.
Re-enable by reverting this block if needed in the future.
Reason for disabling: CLI-proxy architecture means each request spawns a
fresh claude process. The breaker was designed for persistent API connections
where a degraded backend benefits from back-off. With CLI spawning, timeouts
are usually transient (API load, large prompts) and the breaker's 120s+
cooldown with graduated backoff made things worse, not better.
*/
// ── Model mapping ───────────────────────────────────────────────────────
// Maps request model IDs and aliases to canonical claude CLI model IDs.
// Derived from models.json (single source of truth).
const MODEL_MAP = Object.fromEntries([
...modelsConfig.models.map(m => [m.id, m.id]),
...Object.entries(modelsConfig.aliases),
...Object.entries(modelsConfig.legacyAliases),
]);
const MODELS = modelsConfig.models.map(m => ({ id: m.id, name: m.displayName }));
// ── Session management ──────────────────────────────────────────────────
// Maps namespaced session keys to Claude CLI session UUIDs.
// Key format: "${keyName}|${conversationId}" — prevents cross-key collision
// when two callers (different API keys or anon + authenticated) use the same
// session_id string. Anonymous callers use "anon"; admin uses "admin".
// Enables --resume for multi-turn conversations, reducing token waste.
const sessions = new Map(); // `${keyName}|${conversationId}` → { uuid, messageCount, lastUsed, model }
// Build the namespaced key used for all sessions Map operations.
// Returns null when conversationId is falsy (one-off requests bypass session tracking).
function _sessionKey(conversationId, keyName) {
return conversationId ? `${keyName || "anon"}|${conversationId}` : null;
}
const sessionCleanupInterval = setInterval(() => {
const now = Date.now();
for (const [id, s] of sessions) {
const idleMs = now - s.lastUsed;
const ageMs = s.firstSeen ? now - s.firstSeen : null;
// id is "${keyName}|${conversationId}"; strip prefix for log output
const convIdShort = id.includes("|") ? id.slice(id.indexOf("|") + 1, id.indexOf("|") + 13) : id.slice(0, 12);
if (idleMs > SESSION_TTL) {
sessions.delete(id);
console.log(`[session] expired ${convIdShort}... (idle ${Math.round(idleMs / 60000)}m)`);
logEvent("info", "session_expired", { conversationId: convIdShort + "...", idleMs, ageMs });
} else if (ageMs !== null && ageMs > 4 * SESSION_TTL) {
// #42 evidence-gathering: a session whose firstSeen is more than 4× TTL old
// but whose lastUsed keeps getting bumped (never idle long enough to expire)
// is the suspected bug. Log without action so the pattern can be confirmed
// in /logs. Do NOT enforce an absolute age cap here speculatively.
logEvent("warn", "session_long_lived", { conversationId: convIdShort + "...", idleMs, ageMs });
}
}
}, 60000);
// Cache cleanup: remove expired entries every 10 minutes
const cacheCleanupInterval = setInterval(() => {
if (CACHE_TTL > 0) {
try {
const cleaned = clearCache(CACHE_TTL);
if (cleaned > 0) logEvent("info", "cache_cleanup", { expired: cleaned });
} catch (e) { logEvent("error", "cache_cleanup_failed", { error: e.message }); }
}
}, 600000);
// ── Active child process tracking ────────────────────────────────────────
const activeProcesses = new Set();
// ── Stats & diagnostics ─────────────────────────────────────────────────
const stats = {
totalRequests: 0,
activeRequests: 0,
errors: 0,
timeouts: 0,
sessionHits: 0,
sessionMisses: 0,
oneOffRequests: 0,
};
const recentErrors = []; // last 20 errors
// Per-model request stats
const modelStats = new Map(); // cliModel → { requests, errors, timeouts, totalElapsed, maxElapsed, totalPromptChars, maxPromptChars }
function getModelStats(cliModel) {
if (!modelStats.has(cliModel)) {
modelStats.set(cliModel, {
requests: 0, successes: 0, errors: 0, timeouts: 0,
totalElapsed: 0, maxElapsed: 0,
totalPromptChars: 0, maxPromptChars: 0,
});
}
return modelStats.get(cliModel);
}
function recordModelRequest(cliModel, promptChars) {
const m = getModelStats(cliModel);
m.requests++;
m.totalPromptChars += promptChars;
if (promptChars > m.maxPromptChars) m.maxPromptChars = promptChars;
}
function recordModelSuccess(cliModel, elapsedMs) {
const m = getModelStats(cliModel);
m.successes++;
m.totalElapsed += elapsedMs;
if (elapsedMs > m.maxElapsed) m.maxElapsed = elapsedMs;
}
function recordModelError(cliModel, isTimeout) {
const m = getModelStats(cliModel);
m.errors++;
if (isTimeout) m.timeouts++;
}
function getModelStatsSnapshot() {
const result = {};
for (const [model, m] of modelStats) {
result[model] = {
requests: m.requests,
successes: m.successes,
errors: m.errors,
timeouts: m.timeouts,
avgElapsed: m.successes > 0 ? Math.round(m.totalElapsed / m.successes) : 0,
maxElapsed: m.maxElapsed,
avgPromptChars: m.requests > 0 ? Math.round(m.totalPromptChars / m.requests) : 0,
maxPromptChars: m.maxPromptChars,
};
}
return result;
}
function trackError(msg) {
stats.errors++;
recentErrors.push({ time: new Date().toISOString(), message: String(msg).slice(0, 200) });
if (recentErrors.length > 20) recentErrors.shift();
}
// ── Auth health check ───────────────────────────────────────────────────
let authStatus = { ok: null, lastCheck: 0, message: "" };
async function checkAuth() {
try {
const env = { ...process.env };
delete env.CLAUDECODE;
delete env.ANTHROPIC_API_KEY;
delete env.ANTHROPIC_BASE_URL;
delete env.ANTHROPIC_AUTH_TOKEN;
execFileSync(CLAUDE, ["auth", "status"], { encoding: "utf8", timeout: 10000, env });
authStatus = { ok: true, lastCheck: Date.now(), message: "authenticated" };
} catch (e) {
const msg = (e.stderr || e.message || "").slice(0, 200);
authStatus = { ok: false, lastCheck: Date.now(), message: msg };
console.error(`[auth] check failed: ${msg}`);
}
}
// Check auth on start and every 10 minutes
checkAuth();
const authCheckInterval = setInterval(checkAuth, 600000);
// ── Build CLI arguments ─────────────────────────────────────────────────
// Phase 6c port (2026-05-30): removed `-p` / `--output-format text`.
// Now uses `--output-format stream-json --verbose --no-session-persistence
// --system-prompt <OCP_SYSTEM_PROMPT_WRAPPER + client system messages>`.
//
// Authority: claude CLI § --output-format stream-json, § --verbose,
// § --no-session-persistence, § --system-prompt (ported from OLP, verified v2.1.104;
// behavior stable through v2.1.158).
// Reference: OLP ADR 0009 Amendment 1 + commit 97e7d16.
//
// Session flags (--resume, --session-id) are dropped: they are incompatible
// with stream-json mode without -p. OCP always passes full conversation context
// via stdin instead (messagesToPrompt), preserving multi-turn correctness.
// CLAUDE_SYSTEM_PROMPT env var is absorbed into the system prompt via
// extractSystemPrompt() at the caller level; APPEND_SYSTEM_PROMPT no longer used.
// Note: ALLOWED_TOOLS / SKIP_PERMISSIONS / MCP_CONFIG are preserved as before.
function buildCliArgs(cliModel, systemPrompt) {
const args = [
"--model", cliModel,
"--output-format", "stream-json",
"--verbose",
"--no-session-persistence",
"--system-prompt", systemPrompt,
];
// Permissions
// ADR 0007 B-path: in multi-tenant mode, suppress operator-FS tools so a guest
// prompt cannot drive Bash/Read/Write/Edit/etc. on the operator's filesystem.
// For AUTH_MODE !== "multi" (none/shared — single-operator/trusted), preserve
// existing behaviour unchanged.
if (AUTH_MODE === "multi") {
// Disallow the full operator-FS + web + agent surface. "--disallowedTools" may
// be repeated; claude accepts multiple occurrences (TUI path already uses it).
args.push(
"--disallowedTools", "Bash",
"--disallowedTools", "Read",
"--disallowedTools", "Write",
"--disallowedTools", "Edit",
"--disallowedTools", "Glob",
"--disallowedTools", "Grep",
"--disallowedTools", "WebFetch",
"--disallowedTools", "WebSearch",
"--disallowedTools", "Agent",
"--disallowedTools", "mcp__*",
);
// Do NOT push --allowedTools in multi mode.
} else if (SKIP_PERMISSIONS) {
args.push("--dangerously-skip-permissions");
} else if (ALLOWED_TOOLS.length > 0) {
args.push("--allowedTools", ...ALLOWED_TOOLS);
}
// MCP config
if (MCP_CONFIG) {
args.push("--mcp-config", MCP_CONFIG);
}
return args;
}
// ── Format messages to prompt text ──────────────────────────────────────
// Truncation guard: if total chars exceed MAX_PROMPT_CHARS, keep the system
// message(s) + first user message + last N messages, dropping the middle.
// This prevents runaway context from gateway-side conversation accumulation.
let MAX_PROMPT_CHARS = parseInt(process.env.CLAUDE_MAX_PROMPT_CHARS || "150000", 10);
// Flatten OpenAI content (string | array of parts) to plain text for the prompt.
// Array content: concatenate text parts; replace non-text parts (e.g. image_url)
// with a placeholder rather than dumping raw JSON. (issue #110)
function contentToText(content) {
if (typeof content === "string") return content;
if (Array.isArray(content)) {
return content.map(p =>
p && p.type === "text" && typeof p.text === "string" ? p.text : "[non-text content omitted]"
).join("");
}
return content == null ? "" : JSON.stringify(content);
}
function messagesToPrompt(messages) {
const full = messages.map((m) => {
const text = contentToText(m.content);
if (m.role === "system") return `[System] ${text}`;
if (m.role === "assistant") return `[Assistant] ${text}`;
return text;
});
const joined = full.join("\n\n");
if (joined.length <= MAX_PROMPT_CHARS) return joined;
// Truncation: keep system messages, first user msg, and trim from the tail
logEvent("warn", "prompt_truncated", {
originalChars: joined.length,
maxChars: MAX_PROMPT_CHARS,
originalMessages: messages.length,
});
const system = [];
const rest = [];
for (let i = 0; i < full.length; i++) {
if (messages[i].role === "system") system.push(full[i]);
else rest.push(full[i]);
}
// Keep system + as many recent messages as fit
const systemText = system.join("\n\n");
const budget = MAX_PROMPT_CHARS - systemText.length - 200; // 200 for separator
const kept = [];
let used = 0;
for (let i = rest.length - 1; i >= 0; i--) {
if (used + rest[i].length + 2 > budget) break;
kept.unshift(rest[i]);
used += rest[i].length + 2;
}
const truncNote = `[System] Note: ${rest.length - kept.length} older messages were truncated to fit context limit.`;
const result = [systemText, truncNote, ...kept].filter(Boolean).join("\n\n");
logEvent("info", "prompt_after_truncation", {
chars: result.length,
keptMessages: kept.length,
droppedMessages: rest.length - kept.length,
});
return result;
}
// Model tier — used for logging only (no timeout logic).
function getModelTier(cliModel) {
if (cliModel.includes("opus")) return "opus";
if (cliModel.includes("haiku")) return "haiku";
return "sonnet";
}
// ── Spawn claude CLI (shared setup) ─────────────────────────────────────
// Builds CLI args, spawns the process, and sets up timeouts.
// Returns context object or throws synchronously.
//
// Phase 6c port (2026-05-30): session resume (--resume / --session-id) is
// dropped because it is incompatible with stream-json mode without -p.
// OCP now always passes the full serialized conversation via stdin
// (messagesToPrompt), so multi-turn correctness is preserved without sessions.
// The sessions Map is retained for stats/logging but no longer drives --resume.
// Reference: OLP ADR 0009 Amendment 1 + commit 97e7d16.
function spawnClaudeProcess(model, messages, conversationId, keyName) {
if (stats.activeRequests >= MAX_CONCURRENT) {
throw new Error(`concurrency limit reached (${stats.activeRequests}/${MAX_CONCURRENT})`);
}
const cliModel = MODEL_MAP[model] || model;
// Circuit breaker: disabled (see comment at top of breaker section)
stats.activeRequests++;
stats.totalRequests++;
// Phase 6c: always serialize full conversation via stdin (no session resume).
// System messages are extracted and passed via --system-prompt; the remaining
// messages (user/assistant/tool) are serialized by messagesToPrompt.
const systemPrompt = extractSystemPrompt(messages);
// messagesToPrompt skips system messages now that they go via --system-prompt.
// Filter them out before calling to avoid double-injection.
const nonSystemMessages = messages.filter(m => m.role !== "system");
const prompt = messagesToPrompt(nonSystemMessages);
stats.oneOffRequests++;
if (conversationId) {
console.log(`[session] stateless conv=${conversationId.slice(0, 12)}... key=${keyName || "anon"} msgs=${messages.length} prompt_chars=${prompt.length}`);
}
const cliArgs = buildCliArgs(cliModel, systemPrompt);
const env = { ...process.env };
delete env.CLAUDECODE;
delete env.ANTHROPIC_API_KEY;
delete env.ANTHROPIC_BASE_URL;
delete env.ANTHROPIC_AUTH_TOKEN;
// Pure API mode: suppress Claude Code context injection while preserving OAuth auth
if (NO_CONTEXT) {
env.CLAUDE_CODE_DISABLE_CLAUDE_MDS = "1";
env.CLAUDE_CODE_DISABLE_AUTO_MEMORY = "1";
}
const proc = spawn(CLAUDE, cliArgs, { env, stdio: ["pipe", "pipe", "pipe"] });
activeProcesses.add(proc);
const t0 = Date.now();
let gotFirstByte = false;
let cleaned = false;
function cleanup() {
if (cleaned) return;
cleaned = true;
clearTimeout(overallTimer);
stats.activeRequests--;
}
// Guarantee slot release on ANY exit path (normal close, error, timeout kill,
// SIGKILL escalation). The 'exit' event fires before 'close' and runs even
// if stdio pipes stay open. Fixes #37: the timeout path called
// proc.kill('SIGTERM') without decrementing the concurrency counter, so a
// stuck subprocess that ignored SIGTERM could leak its slot until (or
// beyond) the SIGKILL escalation actually reaped it. cleanup() is idempotent
// so this listener is safe alongside the existing 'close'/'error' paths.
proc.once("exit", cleanup);
function handleSessionFailure() {
// Phase 6c: session resume (--resume/--session-id) is no longer used;
// OCP always passes full context via stdin. No session state to clean up.
if (conversationId) {
logEvent("warn", "session_failure", { mode: "stateless", conversationId: conversationId.slice(0, 12) + "...", action: "none" });
}
}
function markFirstByte() {
if (!gotFirstByte) {
gotFirstByte = true;
console.log(`[claude] first-byte model=${cliModel} elapsed=${Date.now() - t0}ms`);
}
}
// Guard stdin writes against EPIPE (child may close stdin before we finish
// writing, e.g. early exit on bad model). The ChildProcess "error" event is on
// the spawned process, NOT on the stdin Writable — it does not catch this.
proc.stdin.on("error", (e) => logEvent("warn", "stdin_write_error", { error: e.message }));
// Write prompt to stdin immediately
proc.stdin.write(prompt);
proc.stdin.end();
recordModelRequest(cliModel, prompt.length);
logEvent("info", "claude_spawned", { model: cliModel, promptChars: prompt.length, timeout: TIMEOUT, tier: getModelTier(cliModel), session: conversationId ? conversationId.slice(0, 12) + "..." : "none" });
// Single request timeout — no separate first-byte timer.
// Claude tool-use causes long pauses in the token stream (30s-5min),
// making first-byte/idle timeouts unreliable. One generous timeout is simpler and correct.
const overallTimer = setTimeout(() => {
if (!cleaned) {
stats.timeouts++;
recordModelError(cliModel, true);
breakerRecordTimeout(cliModel);
logEvent("error", "request_timeout", { model: cliModel, timeoutMs: TIMEOUT, elapsed: Date.now() - t0 });
try { proc.kill("SIGTERM"); } catch {}
setTimeout(() => { try { proc.kill("SIGKILL"); } catch {} }, 5000);
}
}, TIMEOUT);
// Clear ONLY the request timer (not the slot accounting) when the response has
// semantically completed (result/[DONE]) but the child hasn't exited yet — prevents
// a spurious post-success timeout. cleanup() (on exit) still clears it idempotently. (issue #111)
function clearOverallTimer() { clearTimeout(overallTimer); }
return { proc, cliModel, conversationId, t0, cleanup, clearOverallTimer, handleSessionFailure, markFirstByte };
}
// ── Call claude CLI (non-streaming) ─────────────────────────────────────
// On-demand spawning: each request spawns a fresh claude process.
// No pool = no crash loops, no stale workers, no degraded states.
// Stdin is written immediately so there's no 3s stdin timeout issue.
//
// Phase 6c port (2026-05-30): stdout is now NDJSON (stream-json format).
// We accumulate full text across all content_block_delta events plus the
// assistant-aggregate fallback, then resolve with the assembled string.
// Reference: OLP ADR 0009 Amendment 1 + commit 97e7d16.
function callClaude(model, messages, conversationId, keyName) {
return new Promise((resolve, reject) => {
let ctx;
try {
ctx = spawnClaudeProcess(model, messages, conversationId, keyName);
} catch (err) {
return reject(err);
}
const { proc, cliModel, conversationId: convId, t0, cleanup, handleSessionFailure, markFirstByte } = ctx;
let lineBuffer = "";
let assembledText = "";
let isFirstDelta = true;
let resultEventSeen = false;
let stderr = "";
proc.stdout.on("data", (d) => {
markFirstByte();
lineBuffer += d.toString();
const { events, remainder } = parseStreamJsonLines(lineBuffer);
lineBuffer = remainder;
for (const event of events) {
const parsed = parseStreamJsonEvent(event, isFirstDelta);
if (!parsed) continue;
if (parsed.text !== undefined) {
assembledText += parsed.text;
isFirstDelta = false;
} else if (parsed.stop) {
resultEventSeen = true;
} else if (parsed.error) {
// is_error result — treat as process error
reject(new Error(String(parsed.error)));
}
}
});
proc.stderr.on("data", (d) => (stderr += d));
proc.on("close", (code, signal) => {
activeProcesses.delete(proc);
const elapsed = Date.now() - t0;
cleanup();
// Tolerate null exit code when result event was seen (sandbox-wrap noise, same
// as OLP commit 2864275 — bwrap shell exits null after model completes).
if (code !== 0 && !resultEventSeen) {
recordModelError(cliModel, false);
logEvent("error", "claude_exit", { model: cliModel, code, signal: signal || "none", elapsed, stderr: stderr.slice(0, 300) });
trackError(stderr.slice(0, 300) || assembledText.slice(0, 300) || `claude exit ${code}`);
handleSessionFailure();
reject(new Error(stderr.slice(0, 300) || assembledText.slice(0, 300) || `claude exit ${code}`));
} else {
recordModelSuccess(cliModel, elapsed);
breakerRecordSuccess(cliModel);
logEvent("info", "claude_ok", { model: cliModel, chars: assembledText.length, elapsed, session: convId ? convId.slice(0, 12) + "..." : "none" });
resolve(assembledText);
}
});
proc.on("error", (err) => {
console.error(`[claude] spawn error: ${err.message}`);
cleanup();
trackError(err.message);
handleSessionFailure();
reject(err);
});
});
}
// ── TUI-mode upstream (interactive claude, cc_entrypoint=cli) ───────────
// Drop-in replacement for callClaude when TUI_MODE is ON.
// Same signature and Promise<string> contract so all downstream
// (singleflight → setCachedResponse → completionResponse) is unchanged.
// System messages are rendered inline as [System] blocks by messagesToPrompt;
// we deliberately do NOT pass --system-prompt in interactive mode to avoid any
// flag that could perturb cc_entrypoint classification.
// Authority: claude CLI v2.1.158 interactive mode (cc_entrypoint=cli).
// SECURITY: A-path single-user ONLY — home is NOT isolation (see ADR 0007).
function callClaudeTui(model, messages, _conversationId, _keyName) {
const cliModel = MODEL_MAP[model] || model;
const prompt = messagesToPrompt(messages); // includes system as [System] inline
recordModelRequest(cliModel, prompt.length);
// C-4: gate the heavy interactive boot behind the TUI semaphore. run() acquires a slot
// (queuing if all are busy, up to maxQueue), then releases in a finally so any throw from
// runTuiTurn (tmux spawn failure, paste-not-landed) OR from the honesty gates below
// (truncation / error banner) can NEVER leak a slot. tuiSemaphore.inflight feeds /health.
return tuiSemaphore.run(() => runTuiTurn({
prompt,
model: cliModel,
claudeBin: CLAUDE,
home: TUI_HOME,
realHome: process.env.HOME,
cwd: TUI_CWD,
wallclockMs: TUI_WALLCLOCK_MS,
entrypointMode: TUI_ENTRYPOINT,
}).then(({ text, entrypoint, truncated }) => {
// ── Honesty gates (issue #133) ─ run BEFORE recordModelSuccess / cache write-back.
// A throw here propagates to the .catch below (recordModelError + reject), so the
// result never reaches the downstream setCachedResponse / singleflight / SUCCESS path.
// C-2: the wall-clock cap hit with partial text and NO terminal marker — the turn
// is INCOMPLETE. Returning the cut-off prefix would cache it and report it as
// finish_reason:stop (a truncated answer served as a complete one). Reject instead.
if (truncated) {
logEvent("error", "tui_wallclock_truncated", { model: cliModel, chars: (text || "").length, wallclockMs: TUI_WALLCLOCK_MS });
throw new Error("tui_wallclock_truncated: turn hit the wall-clock cap before completing; partial text dropped");
}
// C-1: the interactive claude CLI renders in-session errors (expired/invalid
// credentials, transient API failure) as ordinary assistant text. Returning that
// banner would cache an error AS an answer and record a model SUCCESS. Detect a
// known error banner (anchored whole-text match — see detectTuiUpstreamError) and
// reject so it does NOT enter the cache and the client gets a 5xx.
const banner = detectTuiUpstreamError(text);
if (banner) {
logEvent("error", "tui_upstream_error", { model: cliModel, banner: banner.slice(0, 200) });
throw new Error("tui_upstream_error: claude CLI returned an in-session error banner instead of an answer");
}
recordModelSuccess(cliModel, 0); // elapsed not measurable here; wallclock at reader level
// Assert the subscription-pool classification. TUI exists to keep cc_entrypoint=cli
// (subscription pool); a silent degrade to sdk-cli (metered Agent SDK pool) would still
// return text but cost money — warn loudly so it's visible. (issue #115)
// C-5: also surface the observation on /health. recordTuiEntrypoint sets lastEntrypoint
// unconditionally (operators can poll it to confirm cli) and increments
// entrypointMismatches when expected=cli but observed≠cli — the same condition the
// journald warning already covers — so a silent metered-pool drift is visible on /health
// without tailing logs.
if (recordTuiEntrypoint(tuiStats, entrypoint, TUI_ENTRYPOINT)) {
logEvent("warn", "tui_entrypoint_mismatch", { expected: "cli", got: entrypoint, model: cliModel });
}
return text;
}).catch((err) => {
recordModelError(cliModel, false);
throw err;
}));
}
// ── SSE heartbeat (opt-in idle watchdog) ────────────────────────────────
// Emits `: keepalive\n\n` SSE comment frames during silent windows on the
// streaming response. Design: docs/superpowers/specs/2026-04-25-47-sse-heartbeat-design.md
// This is a downstream liveness hint only — it MUST NOT be able to abort
// or time out a request. That discipline is load-bearing: v2.2-v2.5's
// first-byte/adaptive-tier timeouts "repeatedly killed valid requests"
// (see server.mjs top-of-file comment and commit 3843ec8).
function startHeartbeat(res, intervalMs, sessionId) {
if (!intervalMs || intervalMs <= 0) return { reset: () => {}, stop: () => {} };
let handle = null;
let hasFired = false;
const onFire = () => {
if (res.writableEnded || res.destroyed) return;
res.write(": keepalive\n\n");
if (!hasFired) {
hasFired = true;
logEvent("info", "heartbeat_active", { session: sessionId, intervalMs });
}
handle = setTimeout(onFire, intervalMs);
};
handle = setTimeout(onFire, intervalMs);
return {
reset: () => { if (handle) { clearTimeout(handle); handle = setTimeout(onFire, intervalMs); } },
stop: () => { if (handle) { clearTimeout(handle); handle = null; } },
};
}
// ── Call claude CLI (real streaming) ─────────────────────────────────────
// Pipes stdout from the claude process as SSE chunks as they arrive.
// Each NDJSON content_block_delta text event becomes one SSE delta.
// TODO(cache-singleflight-stream): streaming-path singleflight is out of scope for v3.13.0; see spec D4 streaming caveat.
//
// Phase 6c port (2026-05-30): stdout is now NDJSON (stream-json format).
// We parse line-by-line and forward content_block_delta text events as SSE.
// The result event triggers the stop/[DONE] sequence.
// Reference: OLP ADR 0009 Amendment 1 + commits 97e7d16, 65f945c.
function callClaudeStreaming(model, messages, conversationId, res, authInfo = {}) {
const id = `chatcmpl-${randomUUID()}`;
const created = Math.floor(Date.now() / 1000);
let ctx;
try {
ctx = spawnClaudeProcess(model, messages, conversationId, authInfo.keyName);
} catch (err) {
return jsonResponse(res, 500, { error: { message: sanitizeError(err.message), type: "proxy_error" } });
}
const { proc, cliModel, conversationId: convId, t0, cleanup, clearOverallTimer, handleSessionFailure, markFirstByte } = ctx;
let stderr = "";
let headersSent = false;
let totalChars = 0;
let cachedContent = ""; // accumulate for cache write-back
let lineBuffer = "";
let isFirstDelta = true;
let resultEventSeen = false;
// Separate flag for is_error result — must NOT be conflated with resultEventSeen.
// If errored===true the close handler must not cache the response or record success
// (mirrors callClaude which rejects and never caches on is_error).
let errored = false;
function ensureHeaders() {
if (res.writableEnded || res.destroyed) return false;
if (headersSent) return true;
headersSent = true;
res.writeHead(200, {
"Content-Type": "text/event-stream",
"Cache-Control": "no-cache",
"Connection": "keep-alive",
"X-Accel-Buffering": "no",
});
// Send initial role chunk
sendSSE(res, {
id, object: "chat.completion.chunk", created, model,
choices: [{ index: 0, delta: { role: "assistant" }, finish_reason: null }],
});
return true;
}
// D4 (spec 2026-04-25): eagerly send SSE headers post-spawn so the
// heartbeat started in the next statement covers the pre-first-byte silent window.
ensureHeaders();
const hb = startHeartbeat(res, HEARTBEAT_INTERVAL, convId);
proc.stdout.on("data", (d) => {
markFirstByte();
lineBuffer += d.toString();
const { events, remainder } = parseStreamJsonLines(lineBuffer);
lineBuffer = remainder;
for (const event of events) {
const parsed = parseStreamJsonEvent(event, isFirstDelta);
if (!parsed) continue;
if (parsed.text !== undefined) {
// content_block_delta text — forward as SSE delta
const text = parsed.text;
totalChars += text.length;
if (CACHE_TTL > 0) cachedContent += text;
isFirstDelta = false;
if (!ensureHeaders()) continue;
sendSSE(res, {
id, object: "chat.completion.chunk", created, model,
choices: [{ index: 0, delta: { content: text }, finish_reason: null }],
}, hb);
} else if (parsed.stop) {
// result event — emit stop and [DONE] immediately
resultEventSeen = true;
if (!ensureHeaders()) continue;
sendSSE(res, {
id, object: "chat.completion.chunk", created, model,
choices: [{ index: 0, delta: {}, finish_reason: "stop" }],
}, hb);
if (!res.writableEnded && !res.destroyed) {
res.write("data: [DONE]\n\n");
res.end();
}
clearOverallTimer();
} else if (parsed.error) {
// is_error result — emit error stop; do NOT set resultEventSeen (that would
// cause the close handler to record success + write cache). Set errored instead.
errored = true;
const errStr = String(parsed.error);
logEvent("error", "claude_result_error", { model: cliModel, error: errStr.slice(0, 200) });
trackError(errStr.slice(0, 200));
if (!headersSent && !res.writableEnded && !res.destroyed) {
jsonResponse(res, 500, { error: { message: sanitizeError(errStr), type: "provider_error" } });
} else if (!res.writableEnded && !res.destroyed) {
// Headers already sent (eager ensureHeaders) — can't send a JSON 500. Surface the
// failure as an SSE error frame so the client can distinguish an upstream error
// from a legitimately empty completion, instead of a success-looking finish_reason:"stop". (issue #110)
sendSSE(res, { error: { message: sanitizeError(errStr), type: "provider_error" } }, hb);
res.write("data: [DONE]\n\n");
res.end();
}
}
}
});
proc.stderr.on("data", (d) => (stderr += d));
proc.on("close", (code, signal) => {
activeProcesses.delete(proc);
hb.stop();
cleanup();
const elapsed = Date.now() - t0;
// Tolerate null exit code when result event was seen (sandbox-wrap noise, same
// as OLP commit 2864275 — bwrap shell exits null after model completes).
// Also route to the error path when errored===true (is_error result received):
// never record success or write cache for an errored response.
if ((code !== 0 && !resultEventSeen) || errored) {
recordModelError(cliModel, false);
try { recordUsage({ keyId: authInfo.keyId, keyName: authInfo.keyName, model, promptChars: messages.reduce((a, m) => a + contentToText(m.content).length, 0), responseChars: 0, elapsedMs: elapsed, success: false }); } catch (e) { logEvent("error", "usage_record_failed", { error: e.message }); }
logEvent("error", "claude_exit", { model: cliModel, code, signal: signal || "none", elapsed, errored, stderr: stderr.slice(0, 300) });
trackError(stderr.slice(0, 300) || `claude exit ${code}`);
handleSessionFailure();
// If the error was already sent inline (parsed.error branch above), the
// response may be writableEnded — nothing more to send.
if (!headersSent && !res.writableEnded && !res.destroyed) {
jsonResponse(res, 500, { error: { message: sanitizeError(stderr.slice(0, 300) || `claude exit ${code}`), type: "proxy_error" } });
} else if (!res.writableEnded && !res.destroyed) {
// Headers already sent — surface the failure as an SSE error frame instead of a
// success-looking finish_reason:"stop", so the client can tell the upstream crashed
// rather than returned empty. (issue #110 — sibling of the parsed.error branch above.)
sendSSE(res, { error: { message: sanitizeError(stderr.slice(0, 300) || `claude exit ${code}`), type: "proxy_error" } }, hb);
res.write("data: [DONE]\n\n");
res.end();
}
} else {
recordModelSuccess(cliModel, elapsed);
breakerRecordSuccess(cliModel);
try { recordUsage({ keyId: authInfo.keyId, keyName: authInfo.keyName, model, promptChars: messages.reduce((a, m) => a + contentToText(m.content).length, 0), responseChars: totalChars, elapsedMs: elapsed, success: true }); } catch (e) { logEvent("error", "usage_record_failed", { error: e.message }); }
logEvent("info", "claude_ok", { model: cliModel, chars: totalChars, elapsed, session: convId ? convId.slice(0, 12) + "..." : "none" });
// Cache write-back for streaming — only on true success (not errored)
if (CACHE_TTL > 0 && authInfo.cacheHash) {
try { setCachedResponse(authInfo.cacheHash, model, cachedContent); } catch (e) { logEvent("error", "cache_write_failed", { error: e.message }); }
}
// If result event already closed the response, nothing more to do.
// Otherwise emit a synthetic stop (version drift safety net, same as OLP).
if (!resultEventSeen) {
if (!headersSent) ensureHeaders();
if (!res.writableEnded && !res.destroyed) {
sendSSE(res, {
id, object: "chat.completion.chunk", created, model,
choices: [{ index: 0, delta: {}, finish_reason: "stop" }],
}, hb);
res.write("data: [DONE]\n\n");
res.end();
}
}
}
});
proc.on("error", (err) => {
console.error(`[claude] spawn error: ${err.message}`);
hb.stop();
cleanup();
trackError(err.message);
handleSessionFailure();
if (!headersSent && !res.writableEnded && !res.destroyed) {
jsonResponse(res, 500, { error: { message: sanitizeError(err.message), type: "proxy_error" } });
} else if (!res.writableEnded && !res.destroyed) {
res.end();
}
});
// If client disconnects, kill the process to free resources
res.on("close", () => {
hb.stop();
// Only escalate when the child is still alive. On the normal-success path res.end()
// also fires "close", but the child has usually already exited — skip the spurious
// SIGTERM and the 5s kill-timer entirely (a post-exit proc.once("exit") never fires,
// so the timer would otherwise leak a closure over proc for 5s per request). (issue #111)
if (!proc.killed && proc.exitCode === null && proc.signalCode === null) {
try { proc.kill("SIGTERM"); } catch {}
// Mirror the overallTimer escalation (server.mjs ~818): a SIGTERM-resistant child would
// otherwise hold its concurrency slot until the request timeout — #37 on the disconnect path. (issue #111)
const killTimer = setTimeout(() => { try { proc.kill("SIGKILL"); } catch {} }, 5000);
killTimer.unref();
proc.once("exit", () => clearTimeout(killTimer));
}
});
}
// Strip absolute filesystem paths from an error message before sending it to a client.
// claude error_message / stderr routinely embed home-dir / credential-file paths. (issue #111)
function sanitizeError(msg) {
return String(msg || "Internal error").replace(/\/[\w/.\-]+/g, "[path]");
}
// ── Response helpers ────────────────────────────────────────────────────
function jsonResponse(res, status, data) {
if (res.headersSent || res.writableEnded || res.destroyed) return;
res.writeHead(status, { "Content-Type": "application/json" });
res.end(JSON.stringify(data));
}
function sendSSE(res, data, hb) {
hb?.reset();
res.write(`data: ${JSON.stringify(data)}\n\n`);
}
function completionResponse(res, id, model, content) {
jsonResponse(res, 200, {
id, object: "chat.completion",
created: Math.floor(Date.now() / 1000),
model,
choices: [{ index: 0, message: { role: "assistant", content }, finish_reason: "stop" }],
usage: { prompt_tokens: 0, completion_tokens: 0, total_tokens: 0 },
});
}
// Replay a complete string as a chunked SSE stream (80 codepoints/chunk).
// Used by: (a) cache-hit replay on the streaming path; (b) TUI-mode streaming
// (buffered response replayed as SSE so clients get the same wire format).
// Behaviour is byte-for-byte identical to the original inline cache-replay block.
function streamStringAsSSE(res, id, model, content) {
const created = Math.floor(Date.now() / 1000);
res.writeHead(200, { "Content-Type": "text/event-stream", "Cache-Control": "no-cache", "Connection": "keep-alive", "X-Accel-Buffering": "no" });
sendSSE(res, { id, object: "chat.completion.chunk", created, model, choices: [{ index: 0, delta: { role: "assistant" }, finish_reason: null }] });
const CHUNK = 80;
const codepoints = Array.from(content);
for (let i = 0; i < codepoints.length; i += CHUNK) {
sendSSE(res, { id, object: "chat.completion.chunk", created, model, choices: [{ index: 0, delta: { content: codepoints.slice(i, i + CHUNK).join("") }, finish_reason: null }] });
}
sendSSE(res, { id, object: "chat.completion.chunk", created, model, choices: [{ index: 0, delta: {}, finish_reason: "stop" }] });
res.write("data: [DONE]\n\n");
res.end();
}
// ── Plan usage probe ────────────────────────────────────────────────────
// ── Plan usage probe ────────────────────────────────────────────────────
// ALIGNMENT: mirrors Claude Code cli.js vE4 rate-limit header extraction.
// DO NOT switch endpoints without grepping "anthropic-ratelimit-unified" in cli.js.
// 2026-04-11 b87992f drift lesson: /api/oauth/usage is a hallucinated endpoint.
// See ALIGNMENT.md for full history.
//
// Reads OAuth token (keychain / Linux credentials / CLAUDE_CODE_OAUTH_TOKEN env)
// and makes a minimal /v1/messages request to capture anthropic-ratelimit-unified-*
// headers. Caches the result for 5 minutes.
let usageCache = { data: null, fetchedAt: 0 };
const USAGE_CACHE_TTL = 5 * 60 * 1000; // 5 min
// ALIGNMENT (Class A — OAuth bearer machinery). Verified against the compiled cli.js
// (claude.exe v2.1.154) on 2026-05-31 via `strings`: both OAUTH_CLIENT_ID and
// OAUTH_TOKEN_URL appear in the binary byte-for-byte; the legacy host
// console.anthropic.com/v1/oauth is absent (0 hits). Re-verify on cli.js major bumps
// using the compiled-binary protocol (strings on the Mach-O/ELF; no live OAuth probe —
// a refresh-token grant would rotate the operator's real credentials). (issue #112)
const OAUTH_CLIENT_ID = "9d1c250a-e61b-44d9-88ed-5944d1962f5e";
const OAUTH_TOKEN_URL = "https://platform.claude.com/v1/oauth/token";
// Refresh backoff state — exponential 60s → 3600s.
// Prevents tight loops hammering the token endpoint after a failure
// (lesson from pre-fix session that burned through rate-limit in seconds).
const OAUTH_REFRESH_MIN_BACKOFF = 60 * 1000;
const OAUTH_REFRESH_MAX_BACKOFF = 3600 * 1000;
let oauthRefreshBackoff = { nextAttemptAt: 0, currentDelay: OAUTH_REFRESH_MIN_BACKOFF };
function getOAuthCredentials() {
// 1. Env var fallback — highest precedence for explicit overrides.
if (process.env.CLAUDE_CODE_OAUTH_TOKEN) {
return { accessToken: process.env.CLAUDE_CODE_OAUTH_TOKEN };
}
// 2. Linux file-based credentials
try {
const credPath = join(homedir(), ".claude", ".credentials.json");
const creds = JSON.parse(readFileSync(credPath, "utf8"));
if (creds?.claudeAiOauth?.accessToken) return creds.claudeAiOauth;
} catch { /* fall through to macOS keychain */ }
// 3. macOS keychain (both label formats)
for (const label of ["claude-code-credentials", "Claude Code-credentials"]) {
try {
const raw = execFileSync("security", [
"find-generic-password", "-s", label, "-w"
], { encoding: "utf8", timeout: 5000 }).trim();
const creds = JSON.parse(raw);
if (creds?.claudeAiOauth?.accessToken) return creds.claudeAiOauth;
} catch { /* try next */ }
}
return null;
}
async function refreshOAuthToken(refreshToken) {
const now = Date.now();
if (now < oauthRefreshBackoff.nextAttemptAt) {
logEvent("info", "oauth_refresh_backoff_skip", {
waitMs: oauthRefreshBackoff.nextAttemptAt - now,
});
return null;
}
try {
const resp = await fetch(OAUTH_TOKEN_URL, {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
grant_type: "refresh_token",
refresh_token: refreshToken,
client_id: OAUTH_CLIENT_ID,
scope: "user:inference user:profile",
}),
});
if (!resp.ok) {
const body = await resp.text();
// Exponential backoff on failure
oauthRefreshBackoff.nextAttemptAt = Date.now() + oauthRefreshBackoff.currentDelay;
oauthRefreshBackoff.currentDelay = Math.min(
oauthRefreshBackoff.currentDelay * 2,
OAUTH_REFRESH_MAX_BACKOFF,
);
logEvent("warn", "oauth_refresh_failed", {
status: resp.status,
body: body.slice(0, 200),
nextBackoffMs: oauthRefreshBackoff.currentDelay,
});
return null;
}
const data = await resp.json();
// Reset backoff on success
oauthRefreshBackoff.currentDelay = OAUTH_REFRESH_MIN_BACKOFF;
oauthRefreshBackoff.nextAttemptAt = 0;
return data.access_token || null;
} catch (err) {
oauthRefreshBackoff.nextAttemptAt = Date.now() + oauthRefreshBackoff.currentDelay;
oauthRefreshBackoff.currentDelay = Math.min(
oauthRefreshBackoff.currentDelay * 2,
OAUTH_REFRESH_MAX_BACKOFF,
);
logEvent("warn", "oauth_refresh_error", {
error: err.message,
nextBackoffMs: oauthRefreshBackoff.currentDelay,
});
return null;
}
}
async function fetchUsageFromApi() {
const creds = getOAuthCredentials();
if (!creds?.accessToken) {
return { error: "No OAuth token found (keychain / ~/.claude/.credentials.json / CLAUDE_CODE_OAUTH_TOKEN)" };
}
let token = creds.accessToken;
// Pre-emptive refresh if token looks expired (5 min buffer, same as Claude Code)
if (creds.expiresAt && Date.now() + 300000 >= creds.expiresAt && creds.refreshToken) {
logEvent("info", "oauth_token_expired_refreshing");
const newToken = await refreshOAuthToken(creds.refreshToken);
if (newToken) token = newToken;
}
// Minimal /v1/messages request — we only need the response headers.
// Mirrors Claude Code cli.js vE4: headers anthropic-ratelimit-unified-{5h,7d}-{utilization,reset}.
const body = JSON.stringify({
model: modelsConfig.aliases.haiku,
max_tokens: 1,
messages: [{ role: "user", content: "." }],
});
const controller = new AbortController();
const timeout = setTimeout(() => controller.abort(), 15000);
const doFetch = (bearerToken) => fetch("https://api.anthropic.com/v1/messages", {
method: "POST",
headers: {
"Authorization": `Bearer ${bearerToken}`,
"anthropic-version": "2023-06-01",
"anthropic-beta": "oauth-2025-04-20",
"Content-Type": "application/json",
},
body,
signal: controller.signal,
});
try {
let resp = await doFetch(token);
// 401 → try a single refresh-and-retry
if (resp.status === 401 && creds.refreshToken) {
logEvent("info", "oauth_usage_401_refreshing");
const newToken = await refreshOAuthToken(creds.refreshToken);
if (newToken) {
token = newToken;
resp = await doFetch(token);
}
}
clearTimeout(timeout);
// Extract all rate-limit headers (we do not need the response body)
const rl = {};
for (const [k, v] of resp.headers) {
if (k.startsWith("anthropic-ratelimit")) rl[k] = v;
}
if (!resp.ok && Object.keys(rl).length === 0) {
return { error: `Usage API returned ${resp.status} with no rate-limit headers` };
}
return parseRateLimitHeaders(rl);
} catch (err) {
clearTimeout(timeout);
return { error: `Failed to fetch usage: ${err.message}` };
}
}
function parseRateLimitHeaders(rl) {
const now = Date.now();
const session5hUtil = parseFloat(rl["anthropic-ratelimit-unified-5h-utilization"] || "0");
const session5hReset = parseInt(rl["anthropic-ratelimit-unified-5h-reset"] || "0", 10);
const weekly7dUtil = parseFloat(rl["anthropic-ratelimit-unified-7d-utilization"] || "0");
const weekly7dReset = parseInt(rl["anthropic-ratelimit-unified-7d-reset"] || "0", 10);
const overageStatus = rl["anthropic-ratelimit-unified-overage-status"] || "unknown";
const overageDisabledReason = rl["anthropic-ratelimit-unified-overage-disabled-reason"] || "";
const status = rl["anthropic-ratelimit-unified-status"] || "unknown";
const representativeClaim = rl["anthropic-ratelimit-unified-representative-claim"] || "";
const fallbackPct = parseFloat(rl["anthropic-ratelimit-unified-fallback-percentage"] || "0");
function formatReset(epochSec) {
if (!epochSec) return "unknown";
const diff = epochSec * 1000 - now;
if (diff <= 0) return "now";
const h = Math.floor(diff / 3600000);
const m = Math.floor((diff % 3600000) / 60000);
if (h > 24) {
const d = Math.floor(h / 24);
return `${d}d ${h % 24}h`;
}
return h > 0 ? `${h}h ${m}m` : `${m}m`;
}
function resetDay(epochSec) {
if (!epochSec) return "";
const d = new Date(epochSec * 1000);
return d.toLocaleDateString("en-US", { weekday: "short", month: "short", day: "numeric", hour: "numeric", minute: "2-digit" });
}
return {
status,
fetchedAt: new Date(now).toISOString(),
plan: {
currentSession: {
utilization: session5hUtil,
percent: `${Math.round(session5hUtil * 100)}%`,
resetsIn: formatReset(session5hReset),
resetsAt: session5hReset ? new Date(session5hReset * 1000).toISOString() : null,
resetsAtHuman: resetDay(session5hReset),
},
weeklyLimits: {
allModels: {
utilization: weekly7dUtil,
percent: `${Math.round(weekly7dUtil * 100)}%`,
resetsIn: formatReset(weekly7dReset),
resetsAt: weekly7dReset ? new Date(weekly7dReset * 1000).toISOString() : null,
resetsAtHuman: resetDay(weekly7dReset),
},
},
extraUsage: {
status: overageStatus,
disabledReason: overageDisabledReason || undefined,
},
representativeClaim,
fallbackPercentage: fallbackPct,
},
proxy: {
totalRequests: stats.totalRequests,
activeRequests: stats.activeRequests,
errors: stats.errors,
timeouts: stats.timeouts,
uptime: `${Math.floor((now - START_TIME) / 3600000)}h ${Math.floor(((now - START_TIME) % 3600000) / 60000)}m`,
},
models: getModelStatsSnapshot(),
_raw: rl,
};
}
async function handleUsage(_req, res) {
const now = Date.now();
let data;
if (usageCache.data && (now - usageCache.fetchedAt) < USAGE_CACHE_TTL) {
data = usageCache.data;
} else {
data = await fetchUsageFromApi();
if (!data.error) {
usageCache = { data, fetchedAt: now };
}
}
// Always attach live model stats and proxy stats (not cached)
const uptimeMs = now - START_TIME;
const response = {
...data,
proxy: {
totalRequests: stats.totalRequests,
activeRequests: stats.activeRequests,
errors: stats.errors,
timeouts: stats.timeouts,
uptime: `${Math.floor(uptimeMs / 3600000)}h ${Math.floor((uptimeMs % 3600000) / 60000)}m`,
},
models: getModelStatsSnapshot(),
};
jsonResponse(res, data.error ? 502 : 200, response);
}
// ── Logs endpoint ──────────────────────────────────────────────────────
// Returns recent structured log entries from the proxy log file.
// GET /logs?n=20&level=error (default: n=30, level=all)
function handleLogs(req, res) {
const url = new URL(req.url, `http://127.0.0.1:${PORT}`);
const n = Math.min(parseInt(url.searchParams.get("n") || "30", 10), 200);
const level = url.searchParams.get("level") || "all"; // all | error | warn | info
const LOG_PATH = join(process.env.HOME || "/tmp", ".openclaw/logs/proxy.log");
let lines;
try {
const raw = readFileSync(LOG_PATH, "utf8");
lines = raw.split("\n").filter(Boolean);
} catch (err) {
return jsonResponse(res, 500, { error: `Cannot read log: ${err.message}` });
}
// Parse JSON lines, fall back to raw text
let entries = lines.slice(-n * 3).map(line => {
try { return JSON.parse(line); } catch { return { raw: line }; }
});
// Filter by level
if (level !== "all") {
entries = entries.filter(e => {
if (e.level) return e.level === level;
if (level === "error") return e.raw?.includes("error") || e.raw?.includes("Error");
return true;
});
}
entries = entries.slice(-n);
return jsonResponse(res, 200, {
count: entries.length,
level,
entries,
});
}
// ── Status endpoint (combined summary) ─────────────────────────────────
async function handleStatus(_req, res) {
const now = Date.now();
const uptimeMs = now - START_TIME;
// Get usage (from cache if fresh)
let usage = null;
if (usageCache.data && (now - usageCache.fetchedAt) < USAGE_CACHE_TTL) {
usage = usageCache.data;
} else {
usage = await fetchUsageFromApi();
if (!usage.error) {
usageCache = { data: usage, fetchedAt: now };
}
}
// Auth
let binaryOk = false;
try { accessSync(CLAUDE, constants.X_OK); binaryOk = true; } catch {}
return jsonResponse(res, 200, {
proxy: {
status: binaryOk && authStatus.ok !== false ? "ok" : "degraded",
version: VERSION,
uptime: `${Math.floor(uptimeMs / 3600000)}h ${Math.floor((uptimeMs % 3600000) / 60000)}m`,
auth: authStatus.ok ? "ok" : authStatus.message,
activeSessions: sessions.size,
},
requests: {
total: stats.totalRequests,
active: stats.activeRequests,
errors: stats.errors,
timeouts: stats.timeouts,
},
plan: usage?.plan || usage?.error || null,
recentErrors: recentErrors.slice(-3),
});
}
// ── Settings endpoint ───────────────────────────────────────────────────
// GET /settings → view current tunable parameters
// PATCH /settings → update one or more parameters at runtime
//
// Tunable keys and their types/ranges:
const SETTINGS_SCHEMA = {
timeout: { type: "number", min: 30000, max: 1800000, unit: "ms", desc: "Request timeout (default: 600s)" },
maxConcurrent: { type: "number", min: 1, max: 32, unit: "", desc: "Max concurrent claude processes" },
sessionTTL: { type: "number", min: 60000, max: 86400000, unit: "ms", desc: "Session idle expiry" },
maxPromptChars: { type: "number", min: 10000, max: 1000000, unit: "chars", desc: "Prompt truncation limit" },
cacheTTL: { type: "number", min: 0, max: 86400000, unit: "ms", desc: "Response cache TTL (0 = disabled)" },
};
function getSettings() {
return {
timeout: { value: TIMEOUT, ...SETTINGS_SCHEMA.timeout },
maxConcurrent: { value: MAX_CONCURRENT, ...SETTINGS_SCHEMA.maxConcurrent },
sessionTTL: { value: SESSION_TTL, ...SETTINGS_SCHEMA.sessionTTL },
maxPromptChars: { value: MAX_PROMPT_CHARS, ...SETTINGS_SCHEMA.maxPromptChars },
cacheTTL: { value: CACHE_TTL, ...SETTINGS_SCHEMA.cacheTTL },
};
}
function applySettingUpdate(key, value) {
const schema = SETTINGS_SCHEMA[key];
if (!schema) return `unknown setting: ${key}`;
if (typeof value !== schema.type) return `${key}: expected ${schema.type}, got ${typeof value}`;
if (value < schema.min || value > schema.max) return `${key}: value ${value} out of range [${schema.min}, ${schema.max}]`;
switch (key) {
case "timeout": TIMEOUT = value; break;
case "maxConcurrent": MAX_CONCURRENT = value; break;
case "sessionTTL": SESSION_TTL = value; break;
case "maxPromptChars": MAX_PROMPT_CHARS = value; break;
case "cacheTTL": CACHE_TTL = value; break;
default: return `${key}: not implemented`;
}
logEvent("info", "setting_changed", { key, value });
return null; // success
}
async function handleSettings(req, res) {
if (req.method === "GET") {
return jsonResponse(res, 200, getSettings());
}
// PATCH
let body = "";
try {
for await (const chunk of req) {
body += chunk;
if (body.length > 10000) return jsonResponse(res, 413, { error: "Body too large" });
}
} catch (e) {
if (!res.headersSent && !res.writableEnded) {
try { return jsonResponse(res, 400, { error: { message: "request aborted", type: "invalid_request_error" } }); } catch {}
}
return;
}
let updates;
try { updates = JSON.parse(body); } catch { return jsonResponse(res, 400, { error: "Invalid JSON" }); }
if (typeof updates !== "object" || Array.isArray(updates)) {
return jsonResponse(res, 400, { error: "Expected JSON object with key-value pairs" });
}
const results = {};
const errors = [];
for (const [key, value] of Object.entries(updates)) {
const err = applySettingUpdate(key, value);
if (err) {
errors.push(err);
results[key] = { error: err };
} else {
results[key] = { ok: true, value };
}
}
const status = errors.length === 0 ? 200 : (Object.keys(results).length > errors.length ? 207 : 400);
return jsonResponse(res, status, {
results,
...(errors.length ? { errors } : {}),
current: getSettings(),
});
}
// ── Handle chat completions ─────────────────────────────────────────────
const MAX_BODY_SIZE = 5 * 1024 * 1024; // 5 MB
// Set of all valid model identifiers (canonical IDs + aliases)
const VALID_MODELS = new Set(Object.keys(MODEL_MAP));
async function handleChatCompletions(req, res) {
let body = "";
try {
for await (const chunk of req) {
body += chunk;
if (body.length > MAX_BODY_SIZE) {
return jsonResponse(res, 413, { error: { message: "Request body too large (max 5MB)", type: "invalid_request_error" } });
}
}
} catch (e) {
if (!res.headersSent && !res.writableEnded) {
try { return jsonResponse(res, 400, { error: { message: "request aborted", type: "invalid_request_error" } }); } catch {}
}
return;
}
let parsed;
try { parsed = JSON.parse(body); } catch { return jsonResponse(res, 400, { error: "Invalid JSON" }); }
const messages = parsed.messages || parsed.input || [{ role: "user", content: parsed.prompt || "" }];
const model = parsed.model || modelsConfig.aliases.sonnet;
const stream = parsed.stream;
// Validate model against known models
if (!VALID_MODELS.has(model)) {
return jsonResponse(res, 400, { error: { message: `Unknown model: ${model}. Valid models: ${[...VALID_MODELS].join(", ")}`, type: "invalid_request_error" } });
}
// Session ID: from request body, header, or null (one-off)
const conversationId = parsed.session_id || parsed.conversation_id || req.headers["x-session-id"] || req.headers["x-conversation-id"] || null;
if (!Array.isArray(messages) || messages.length === 0) {
return jsonResponse(res, 400, { error: { message: "'messages' must be a non-empty array", type: "invalid_request_error" } });
}
// NOTE: quota is best-effort / eventually-consistent. The gate reads the recorded count
// at entry and records only after the upstream completes, so concurrent requests at the
// boundary can overshoot the cap by up to MAX_CONCURRENT, and cache hits (served before
// recordUsage) are not counted. This is internal family rate-limiting, not a payment
// boundary — bounded overshoot is acceptable. (issue #111)
// Quota check — only for identified per-key users (not anonymous/admin/local)
if (req._authKeyId) {
let exceeded;
try { exceeded = checkQuota(req._authKeyId, req._authKeyName); } catch (e) { logEvent("error", "quota_check_failed", { error: e.message }); exceeded = null; }
if (exceeded) {
logEvent("warn", "quota_exceeded", { keyId: req._authKeyId, keyName: req._authKeyName, period: exceeded.period, limit: exceeded.limit, used: exceeded.used });
return jsonResponse(res, 429, {
error: {
message: `Quota exceeded: ${exceeded.used}/${exceeded.limit} requests (${exceeded.period}). Resets ${exceeded.resetsIn}.`,
type: "quota_exceeded",
quota: exceeded,
},
});
}
}
// Cache check (only when cache is enabled and no active conversation/session)
if (CACHE_TTL > 0 && !conversationId) {
// D2: skip OCP cache entirely when messages carry cache_control annotations;
// the client is requesting Anthropic-side prompt caching, not OCP-layer caching.
if (hasCacheControl(messages)) {
req._cacheHash = null;
logEvent("info", "cache_skipped", { reason: "cache_control_present" });
} else {
// D1: include keyId in hash to isolate per-key cache pools (v2 format)
const hash = cacheHash(model, messages, { keyId: req._authKeyId, temperature: parsed.temperature, max_tokens: parsed.max_tokens, top_p: parsed.top_p });
req._cacheHash = hash; // store for later write-back
try {
const cached = getCachedResponse(hash, CACHE_TTL);
if (cached) {
logEvent("info", "cache_hit", { model, hash: hash.slice(0, 12), hits: cached.hits });
if (stream) {
// D3: replay cached content as chunked SSE stream — delegated to streamStringAsSSE (DRY).
const id = `chatcmpl-${randomUUID()}`;
streamStringAsSSE(res, id, model, cached.response);
return;
} else {
const id = `chatcmpl-${randomUUID()}`;
return completionResponse(res, id, model, cached.response);
}
}
} catch (e) {
logEvent("error", "cache_check_failed", { error: e.message });
}
}
}
if (stream) {
if (TUI_MODE) {
// TUI-mode: no real token stream — buffer the full turn via callClaudeTui,
// optionally write-back to cache, then replay as chunked SSE.
// Default path (TUI_MODE===false) falls through to callClaudeStreaming below,
// which is byte-for-byte unchanged from before this gate was added.
const t0TuiStream = Date.now();
const promptCharsTuiStream = messages.reduce((a, m) => a + contentToText(m.content).length, 0);
try {
const content = await callClaudeTui(model, messages, conversationId, req._authKeyName);
if (CACHE_TTL > 0 && req._cacheHash) {
try { setCachedResponse(req._cacheHash, model, content); } catch (e) { logEvent("error", "cache_write_failed", { error: e.message }); }
}
const id = `chatcmpl-${randomUUID()}`;
streamStringAsSSE(res, id, model, content);
try { recordUsage({ keyId: req._authKeyId, keyName: req._authKeyName, model, promptChars: promptCharsTuiStream, responseChars: content.length, elapsedMs: Date.now() - t0TuiStream, success: true }); } catch {}
return;
} catch (err) {
if (res.headersSent || res.writableEnded || res.destroyed) { try { res.end(); } catch {} return; }
return jsonResponse(res, 500, { error: { message: sanitizeError(err.message), type: "proxy_error" } });
}
}
// Default: real stream-json streaming, unchanged.
return callClaudeStreaming(model, messages, conversationId, res, { keyId: req._authKeyId, keyName: req._authKeyName, cacheHash: req._cacheHash });
}
const t0Usage = Date.now();
const promptChars = messages.reduce((a, m) => a + contentToText(m.content).length, 0);
// Select upstream based on TUI_MODE flag. With TUI_MODE===false (default),
// upstreamCall===callClaude — identical to the pre-TUI code path.
const upstreamCall = TUI_MODE ? callClaudeTui : callClaude;
// Non-streaming path with stampede protection: wrap the upstream call in singleflight
// when cache is enabled and a hash is present. Concurrent identical requests share
// one upstream spawn; followers receive the same promise. Streaming-path dedup is
// explicitly out of scope (see TODO comment above callClaudeStreaming).
if (CACHE_TTL > 0 && req._cacheHash) {
try {
const content = await singleflight(req._cacheHash, async () => {
// Re-check cache inside the singleflight: a follower that enters before the
// leader finishes will wait on the shared promise (not reach here), but a
// request that races in just after the previous singleflight cleared the map
// will re-read the freshly-populated cache entry here rather than spawning.
const recheck = getCachedResponse(req._cacheHash, CACHE_TTL);
if (recheck) return recheck.response;
const c = await upstreamCall(model, messages, conversationId, req._authKeyName);
try { setCachedResponse(req._cacheHash, model, c); } catch (e) { logEvent("error", "cache_write_failed", { error: e.message }); }
return c;
});
const id = `chatcmpl-${randomUUID()}`;
completionResponse(res, id, model, content);
try { recordUsage({ keyId: req._authKeyId, keyName: req._authKeyName, model, promptChars, responseChars: content.length, elapsedMs: Date.now() - t0Usage, success: true }); } catch (e) { logEvent("error", "usage_record_failed", { error: e.message }); }
return;
} catch (err) {
try { recordUsage({ keyId: req._authKeyId, keyName: req._authKeyName, model, promptChars, responseChars: 0, elapsedMs: Date.now() - t0Usage, success: false }); } catch (e) { logEvent("error", "usage_record_failed", { error: e.message }); }
console.error(`[proxy] error: ${err.message}`);
if (res.headersSent || res.writableEnded || res.destroyed) {
try { res.end(); } catch {}
return;
}
return jsonResponse(res, 500, { error: { message: sanitizeError(err.message), type: "proxy_error" } });
}
}
// Fallback: cache disabled (CACHE_TTL=0) or no _cacheHash — original path untouched.
try {
const content = await upstreamCall(model, messages, conversationId, req._authKeyName);
const id = `chatcmpl-${randomUUID()}`;
completionResponse(res, id, model, content);
try { recordUsage({ keyId: req._authKeyId, keyName: req._authKeyName, model, promptChars, responseChars: content.length, elapsedMs: Date.now() - t0Usage, success: true }); } catch (e) { logEvent("error", "usage_record_failed", { error: e.message }); }
} catch (err) {
try { recordUsage({ keyId: req._authKeyId, keyName: req._authKeyName, model, promptChars, responseChars: 0, elapsedMs: Date.now() - t0Usage, success: false }); } catch (e) { logEvent("error", "usage_record_failed", { error: e.message }); }
console.error(`[proxy] error: ${err.message}`);
if (res.headersSent || res.writableEnded || res.destroyed) {
try { res.end(); } catch {}
return;
}
// Sanitize error: strip internal file paths before sending to client
jsonResponse(res, 500, { error: { message: sanitizeError(err.message), type: "proxy_error" } });
}
}
// ── HTTP server ─────────────────────────────────────────────────────────
const server = createServer(async (req, res) => {
// Dynamic CORS: allow localhost and LAN origins
const origin = req.headers["origin"] || "";
const isAllowedOrigin = /^https?:\/\/(127\.0\.0\.1|localhost|192\.168\.\d+\.\d+|172\.(1[6-9]|2\d|3[01])\.\d+\.\d+|10\.\d+\.\d+\.\d+)(:\d+)?$/.test(origin);
res.setHeader("Access-Control-Allow-Origin", isAllowedOrigin ? origin : `http://127.0.0.1:${PORT}`);
res.setHeader("Access-Control-Allow-Methods", "GET, POST, DELETE, OPTIONS, PATCH");
res.setHeader("Access-Control-Allow-Headers", "Content-Type, Authorization, X-Session-Id, X-Conversation-Id");
if (req.method === "OPTIONS") { res.writeHead(204); res.end(); return; }
// 3-mode auth: none | shared | multi
const pathname = req.url.split("?")[0];
const isPublicEndpoint = pathname === "/health" || pathname === "/dashboard";
const remoteAddr = req.socket.remoteAddress || "";
const isLocalhost = remoteAddr === "127.0.0.1" || remoteAddr === "::1" || remoteAddr === "::ffff:127.0.0.1";
let authKeyName = isLocalhost ? "local" : "remote";
let authKeyId = null;
if (!isPublicEndpoint) {
const auth = req.headers["authorization"] || "";
const token = auth.startsWith("Bearer ") ? auth.slice(7) : "";
if (isLocalhost) {
// Localhost always allowed — try to identify key if provided, but never reject
if (token) {
if (ADMIN_KEY) {
const adminBuf = Buffer.from(ADMIN_KEY);
const tokenBuf = Buffer.from(token);
if (adminBuf.length === tokenBuf.length && timingSafeEqual(adminBuf, tokenBuf)) {
authKeyName = "admin";
}
}
if (authKeyName !== "admin" && PROXY_ANONYMOUS_KEY) {
// anonymous allowlist (issue #12 §14 Path A) — same check as multi branch
const anonBuf = Buffer.from(PROXY_ANONYMOUS_KEY);
const tokenBufA = Buffer.from(token);
if (anonBuf.length === tokenBufA.length && timingSafeEqual(anonBuf, tokenBufA)) {
authKeyName = "anonymous";
}
}
if (authKeyName !== "admin" && authKeyName !== "anonymous") {
const keyInfo = validateKey(token);
if (keyInfo) { authKeyName = keyInfo.name; authKeyId = keyInfo.id; }
}
}
} else if (AUTH_MODE === "shared") {
if (PROXY_API_KEY) {
const tokenBuf = Buffer.from(token);
const keyBuf = Buffer.from(PROXY_API_KEY);
if (tokenBuf.length !== keyBuf.length || !timingSafeEqual(tokenBuf, keyBuf)) {
return jsonResponse(res, 401, { error: { message: "Unauthorized: invalid or missing Bearer token", type: "auth_error" } });
}
authKeyName = "shared";
}
} else if (AUTH_MODE === "multi") {
// If a token is provided, validate it; if not, allow as anonymous
if (token) {
let isAdminToken = false;
if (ADMIN_KEY) {
const adminBuf = Buffer.from(ADMIN_KEY);
const tokenBuf2 = Buffer.from(token);
if (adminBuf.length === tokenBuf2.length && timingSafeEqual(adminBuf, tokenBuf2)) {
authKeyName = "admin";
isAdminToken = true;
}
}
// === NEW: anonymous allowlist (issue #12 §14 Path A) ===
let isAnonymousToken = false;
if (!isAdminToken && PROXY_ANONYMOUS_KEY) {
const anonBuf = Buffer.from(PROXY_ANONYMOUS_KEY);
const tokenBuf3 = Buffer.from(token);
if (anonBuf.length === tokenBuf3.length && timingSafeEqual(anonBuf, tokenBuf3)) {
authKeyName = "anonymous";
isAnonymousToken = true;
}
}
if (!isAdminToken && !isAnonymousToken) {
const keyInfo = validateKey(token);
if (!keyInfo) {
return jsonResponse(res, 401, { error: { message: "Unauthorized: invalid or revoked API key", type: "auth_error" } });
}
authKeyName = keyInfo.name;
authKeyId = keyInfo.id;
}
} else {
authKeyName = "anonymous";
}
}
}
req._authKeyName = authKeyName;
req._authKeyId = authKeyId;
// isAdmin computed here (early, before any admin-gated handler) so that
// DELETE /sessions, GET /logs, GET /usage, GET /status, PATCH /settings
// can all gate on it. Localhost and explicit admin key are always admin;
// in multi-tenant mode only the "admin" named key qualifies.
const isAdmin = AUTH_MODE !== "multi" || authKeyName === "admin" || isLocalhost;
// GET /v1/models
if (req.url === "/v1/models" && req.method === "GET") {
return jsonResponse(res, 200, {
object: "list",
data: MODELS.map((m) => ({
id: m.id, object: "model", owned_by: "anthropic",
created: Math.floor(Date.now() / 1000),
})),
});
}
// POST /v1/chat/completions
if (req.url === "/v1/chat/completions" && req.method === "POST") {
return handleChatCompletions(req, res);
}
// GET /health — comprehensive diagnostics
if (req.url === "/health") {
let binaryOk = false;
try { accessSync(CLAUDE, constants.X_OK); binaryOk = true; } catch {}
const uptimeMs = Date.now() - START_TIME;
const sessionList = [];
for (const [id, s] of sessions) {
// id is "${keyName}|${conversationId}"; expose only the public-facing conversationId
const convId = id.includes("|") ? id.slice(id.indexOf("|") + 1) : id;
sessionList.push({
id: convId.slice(0, 12) + "...",
model: s.model,
messages: s.messageCount,
idleMs: Date.now() - s.lastUsed,
});
}
return jsonResponse(res, 200, {
status: binaryOk && authStatus.ok !== false ? "ok" : "degraded",
version: VERSION,
architecture: "on-demand (v2)",
uptime: uptimeMs,
uptimeHuman: `${Math.floor(uptimeMs / 3600000)}h ${Math.floor((uptimeMs % 3600000) / 60000)}m`,
claudeBinary: CLAUDE,
claudeBinaryOk: binaryOk,
authMode: AUTH_MODE,
...((isLocalhost || ADVERTISE_ANON_KEY) ? { anonymousKey: PROXY_ANONYMOUS_KEY || null } : {}),
auth: authStatus,
config: {
timeout: TIMEOUT,
maxConcurrent: MAX_CONCURRENT,
sessionTTL: SESSION_TTL,
circuitBreaker: "disabled",
allowedTools: SKIP_PERMISSIONS ? "all (skip-permissions)" : ALLOWED_TOOLS,
systemPrompt: SYSTEM_PROMPT ? `${SYSTEM_PROMPT.slice(0, 50)}...` : "(none)",
mcpConfig: MCP_CONFIG || "(none)",
},
stats,
circuitBreaker: "disabled",
sessions: sessionList,
recentErrors: recentErrors.slice(-5),
// ── TUI observability (audit C-5) — ADDITIVE block (ADR 0007 PR-B amendment) ──
// /health is a grandfathered B.2 endpoint (ADR 0006). This block is NEW fields only;
// every existing field above is byte-identical → behaviour-preserving for existing
// consumers per ALIGNMENT.md's grandfather provision. When TUI_MODE is off the block
// still appears with enabled:false (cheap, harmless) so the shape is stable.
// entrypointMismatches/lastEntrypoint exist so an operator can poll /health to catch a
// silent metered-pool drift (the audit's top risk after the 6/15 billing flip).
tui: buildTuiHealthBlock(
{ enabled: TUI_MODE, entrypointMode: TUI_ENTRYPOINT, maxConcurrent: TUI_MAX_CONCURRENT },
tuiStats, tuiSemaphore,
),
});
}
// DELETE /sessions — clear all sessions (mutating; admin only)
if (req.url === "/sessions" && req.method === "DELETE") {
if (!isAdmin) return jsonResponse(res, 403, { error: { message: "admin only", type: "auth_error" } });
const count = sessions.size;
sessions.clear();
return jsonResponse(res, 200, { cleared: count });
}
// GET /sessions — list active sessions (operator data; admin only)
if (req.url === "/sessions" && req.method === "GET") {
if (!isAdmin) return jsonResponse(res, 403, { error: { message: "admin only", type: "auth_error" } });
const list = [];
for (const [id, s] of sessions) {
// id is "${keyName}|${conversationId}"; expose only the public-facing conversationId
const convId = id.includes("|") ? id.slice(id.indexOf("|") + 1) : id;
list.push({ id: convId, uuid: s.uuid, model: s.model, messages: s.messageCount, lastUsed: new Date(s.lastUsed).toISOString() });
}
return jsonResponse(res, 200, { sessions: list });
}
// GET /usage — fetches plan usage from Anthropic API with operator token; admin only
if (req.url === "/usage" && req.method === "GET") {
if (!isAdmin) return jsonResponse(res, 403, { error: { message: "admin only", type: "auth_error" } });
return handleUsage(req, res);
}
// GET /logs — recent proxy log entries (errors and key events); admin only
if (req.url?.startsWith("/logs") && req.method === "GET") {
if (!isAdmin) return jsonResponse(res, 403, { error: { message: "admin only", type: "auth_error" } });
return handleLogs(req, res);
}
// GET /status — combined usage + health summary; uses operator token; admin only
if (req.url === "/status" && req.method === "GET") {
if (!isAdmin) return jsonResponse(res, 403, { error: { message: "admin only", type: "auth_error" } });
return handleStatus(req, res);
}
// GET /settings — view current tunable settings (admin only)
// PATCH /settings — update settings at runtime (JSON body; admin only, mutating)
if (req.url === "/settings" && (req.method === "GET" || req.method === "PATCH")) {
if (!isAdmin) return jsonResponse(res, 403, { error: { message: "admin only", type: "auth_error" } });
return handleSettings(req, res);
}
// ── Key management API ──
// (isAdmin is computed early in the request handler, before the admin-gated routes)
if (req.url === "/api/keys" && req.method === "POST") {
if (!isAdmin) return jsonResponse(res, 403, { error: "Admin access required" });
let body = "";
try {
for await (const chunk of req) { body += chunk; if (body.length > 10000) return jsonResponse(res, 413, { error: "Body too large" }); }
} catch (e) {
if (!res.headersSent && !res.writableEnded) {
try { return jsonResponse(res, 400, { error: { message: "request aborted", type: "invalid_request_error" } }); } catch {}
}
return;
}
let parsed;
try { parsed = JSON.parse(body); } catch { return jsonResponse(res, 400, { error: "Invalid JSON" }); }
const name = parsed.name || `key-${Date.now()}`;
if (!/^[A-Za-z0-9 ._-]{1,64}$/.test(name)) {
return jsonResponse(res, 400, { error: { message: "Invalid key name: 1-64 chars of letters, digits, space, dot, underscore, hyphen", type: "invalid_request_error" } });
}
const newKey = createKey(name);
return jsonResponse(res, 201, newKey);
}
if (req.url === "/api/keys" && req.method === "GET") {
if (!isAdmin) return jsonResponse(res, 403, { error: "Admin access required" });
return jsonResponse(res, 200, { keys: listKeys() });
}
if (req.url?.startsWith("/api/keys/") && !req.url.includes("/quota") && req.method === "DELETE") {
if (!isAdmin) return jsonResponse(res, 403, { error: "Admin access required" });
const idOrName = decodeURIComponent(req.url.split("/api/keys/")[1]);
const revoked = revokeKey(idOrName);
return jsonResponse(res, 200, { revoked, idOrName });
}
// PATCH /api/keys/:id/quota — set quota for a key
// Body: { "daily": 100, "weekly": 500, "monthly": 2000 } (null = unlimited)
if (req.url?.match(/^\/api\/keys\/[^/]+\/quota$/) && req.method === "PATCH") {
if (!isAdmin) return jsonResponse(res, 403, { error: "Admin access required" });
const idOrName = decodeURIComponent(req.url.split("/api/keys/")[1].replace("/quota", ""));
let body = "";
try {
for await (const chunk of req) { body += chunk; if (body.length > 10000) return jsonResponse(res, 413, { error: "Body too large" }); }
} catch (e) {
if (!res.headersSent && !res.writableEnded) {
try { return jsonResponse(res, 400, { error: { message: "request aborted", type: "invalid_request_error" } }); } catch {}
}
return;
}
let quotaBody;
try { quotaBody = JSON.parse(body); } catch { return jsonResponse(res, 400, { error: "Invalid JSON" }); }
// Validate quota values: must be positive integers or null
const quotaFields = {};
for (const k of ["daily", "weekly", "monthly"]) {
if (k in quotaBody) {
const v = quotaBody[k];
if (v !== null && (!Number.isInteger(v) || v < 0)) {
return jsonResponse(res, 400, { error: `${k} must be a positive integer or null` });
}
quotaFields[k] = v;
}
}
if (Object.keys(quotaFields).length === 0) return jsonResponse(res, 400, { error: "Provide at least one of: daily, weekly, monthly" });
const updated = updateKeyQuota(idOrName, quotaFields);
if (!updated) return jsonResponse(res, 404, { error: "Key not found" });
logEvent("info", "quota_updated", { idOrName, ...quotaFields });
return jsonResponse(res, 200, { ok: true, idOrName, quota: quotaFields });
}
// GET /api/keys/:id/quota — get quota + current usage for a key
if (req.url?.match(/^\/api\/keys\/[^/]+\/quota$/) && req.method === "GET") {
if (!isAdmin) return jsonResponse(res, 403, { error: "Admin access required" });
const idOrName = decodeURIComponent(req.url.split("/api/keys/")[1].replace("/quota", ""));
const keyRow = findKey(idOrName);
if (!keyRow) return jsonResponse(res, 404, { error: "Key not found" });
const quota = getKeyQuota(keyRow.id);
return jsonResponse(res, 200, { keyId: keyRow.id, quota });
}
if (req.url?.startsWith("/api/usage") && req.method === "GET") {
// Least-privilege scope rules (security audit follow-up):
// - non-admin authenticated key → only own rows
// - anonymous (PROXY_ANONYMOUS_KEY) → only "anonymous" rows; ?all=true ignored
// - admin without ?all=true → only own ("admin") rows
// - admin with ?all=true → full byKey/recent (legacy behavior); audited
// Authenticated callers are required (anyone reaching here passed the auth gate above);
// remote+no-auth requests would have been rejected before this point.
const url = new URL(req.url, `http://${BIND_ADDRESS}:${PORT}`);
const since = url.searchParams.get("since");
const until = url.searchParams.get("until");
const wantAll = url.searchParams.get("all") === "true";
const callerName = req._authKeyName;
// Anonymous callers may never opt into all-keys view, even if they pass ?all=true.
const isAnonCaller = callerName === "anonymous";
const fullScope = isAdmin && wantAll && !isAnonCaller;
// scopeName === null when fullScope is true (no filter); otherwise the key_name to filter by.
const scopeName = fullScope ? null : callerName;
if (fullScope) {
logEvent("info", "admin_usage_full_scope", { caller: callerName, ip: req.socket.remoteAddress || null });
}
const byKeyAll = getUsageByKey({ since, until });
const recentAll = getRecentUsage(Math.min(parseInt(url.searchParams.get("limit") || "50", 10), 500));
const timeline = getUsageTimeline({
keyName: scopeName || undefined,
hours: Math.min(parseInt(url.searchParams.get("hours") || "24", 10), 720),
});
const byKey = scopeName ? byKeyAll.filter((row) => row.key_name === scopeName) : byKeyAll;
const recent = scopeName ? recentAll.filter((row) => row.key_name === scopeName) : recentAll;
return jsonResponse(res, 200, {
byKey,
timeline,
recent,
scope: { self: scopeName, all: fullScope },
});
}
// GET /cache/stats — cache statistics (entries, hits, size, inflight singleflight count)
if (pathname === "/cache/stats" && req.method === "GET") {
if (!isAdmin) return jsonResponse(res, 403, { error: "Admin access required" });
return jsonResponse(res, 200, { ...getCacheStats(), ...getInflightStats() });
}
// DELETE /cache — clear cache
if (pathname === "/cache" && req.method === "DELETE") {
if (!isAdmin) return jsonResponse(res, 403, { error: "Admin access required" });
const cleared = clearCache();
logEvent("info", "cache_cleared", { entries: cleared });
return jsonResponse(res, 200, { cleared });
}
// GET /dashboard — web dashboard
if (pathname === "/dashboard" && req.method === "GET") {
try {
const html = readFileSync(join(__dirname, "dashboard.html"), "utf8");
res.writeHead(200, { "Content-Type": "text/html; charset=utf-8" });
res.end(html);
} catch (err) {
return jsonResponse(res, 500, { error: "Dashboard file not found" });
}
return;
}
jsonResponse(res, 404, { error: "Not found. Endpoints: GET /v1/models, POST /v1/chat/completions, GET /health, GET /usage, GET /status, GET /logs, GET|PATCH /settings, GET|DELETE /sessions, GET /dashboard, GET|POST|DELETE /api/keys, GET|PATCH /api/keys/:id/quota, GET /api/usage, GET /cache/stats, DELETE /cache" });
});
// ── Process-level safety nets ────────────────────────────────────────────
// Prevent unhandled async rejections and synchronous exceptions from crashing
// the daemon. Each registers once at module level so they are installed before
// the first request arrives. These are global no-ops on the happy path.
process.on("unhandledRejection", (e) =>
logEvent("error", "unhandled_rejection", { error: e && e.message ? e.message : String(e) })
);
process.on("uncaughtException", (e) =>
logEvent("error", "uncaught_exception", { error: e && e.message ? e.message : String(e) })
);
// Destroy the socket on low-level HTTP parse errors so broken connections
// don't accumulate as open file descriptors.
server.on("clientError", (err, socket) => { try { socket.destroy(); } catch {} });
// ── Graceful shutdown ────────────────────────────────────────────────────
let shuttingDown = false;
function gracefulShutdown(signal) {
if (shuttingDown) return;
shuttingDown = true;
logEvent("info", "shutdown_start", { signal });
// 1. Stop accepting new connections
server.close(() => {
logEvent("info", "shutdown_server_closed", {});
});
// 2. Clear intervals/timers
clearInterval(sessionCleanupInterval);
clearInterval(authCheckInterval);
clearInterval(cacheCleanupInterval);
closeDb();
// 3. Kill all active child processes
for (const proc of activeProcesses) {
try { proc.kill("SIGTERM"); } catch {}
}
// Force-kill any remaining processes after 5s, then exit
const forceExitTimer = setTimeout(() => {
for (const proc of activeProcesses) {
try { proc.kill("SIGKILL"); } catch {}
}
logEvent("warn", "shutdown_forced", { remainingProcesses: activeProcesses.size });
process.exit(1);
}, 5000);
forceExitTimer.unref();
// If no active processes, exit immediately
if (activeProcesses.size === 0) {
logEvent("info", "shutdown_complete", {});
process.exit(0);
}
// Wait for active processes to finish
const checkDone = setInterval(() => {
if (activeProcesses.size === 0) {
clearInterval(checkDone);
logEvent("info", "shutdown_complete", {});
process.exit(0);
}
}, 200);
checkDone.unref();
}
process.on("SIGTERM", () => gracefulShutdown("SIGTERM"));
process.on("SIGINT", () => gracefulShutdown("SIGINT"));
// ── Start ───────────────────────────────────────────────────────────────
server.listen(PORT, BIND_ADDRESS, () => {
const bindMsg = BIND_ADDRESS === "0.0.0.0" ? `http://0.0.0.0:${PORT} (LAN mode)` : `http://127.0.0.1:${PORT}`;
console.log(`openclaw-claude-proxy v${VERSION} listening on ${bindMsg}`);
console.log(`Architecture: on-demand spawning (no pool)`);
console.log(`Models: ${MODELS.map((m) => m.id).join(", ")}`);
console.log(`Claude binary: ${CLAUDE}`);
console.log(`Timeout: ${TIMEOUT / 1000}s | Max concurrent: ${MAX_CONCURRENT}`);
console.log(`Circuit breaker: disabled`);
console.log(`Tools: ${SKIP_PERMISSIONS ? "all (skip-permissions)" : ALLOWED_TOOLS.join(", ")}`);
console.log(`Sessions: TTL=${SESSION_TTL / 1000}s`);
if (SYSTEM_PROMPT) console.log(`System prompt: "${SYSTEM_PROMPT.slice(0, 80)}..."`);
if (MCP_CONFIG) console.log(`MCP config: ${MCP_CONFIG}`);
console.log(`Auth: ${PROXY_API_KEY ? "enabled (PROXY_API_KEY set)" : "disabled (no PROXY_API_KEY)"}`);
console.log(`Auth mode: ${AUTH_MODE}${AUTH_MODE === "shared" ? " (PROXY_API_KEY)" : AUTH_MODE === "multi" ? " (per-user keys)" : " (open)"}`);
console.log(`Bind: ${BIND_ADDRESS}${BIND_ADDRESS === "0.0.0.0" ? " ⚠ LAN-accessible" : ""}`);
if (NO_CONTEXT) console.log(`Context: suppressed (CLAUDE_NO_CONTEXT=true — no CLAUDE.md, no auto-memory)`);
if (CACHE_TTL > 0) console.log(`Cache: enabled (TTL=${CACHE_TTL / 1000}s)`);
else console.log(`Cache: disabled (set CLAUDE_CACHE_TTL to enable)`);
if (TUI_MODE) {
console.warn(`⚠️ TUI-mode ON — single-user only; do NOT enable on a multi-user OCP (guest prompts would run claude with operator filesystem access). See ADR 0007.`);
console.log(` TUI-mode: ON home=${TUI_HOME} cwd=${TUI_CWD} wallclock=${TUI_WALLCLOCK_MS}ms maxConcurrent=${TUI_MAX_CONCURRENT}`);
try {
const n = reapStaleTuiSessions();
if (n) logEvent("info", "tui_reaped_stale_sessions", { count: n });
} catch {}
}
console.log(`---`);
console.log(`Coexistence: This proxy does NOT conflict with Claude Code interactive mode.`);
console.log(` OCP uses: localhost:${PORT} (HTTP) → claude --output-format stream-json (per-request process)`);
console.log(` CC uses: MCP protocol (in-process) → persistent session`);
console.log(` Both can run simultaneously on the same machine.`);
// Passive OpenClaw registry drift check (non-fatal, read-only).
// Emits a console.warn only. No network/endpoint surface change. No
// Claude-CLI-call boundary touched — cli.js citation N/A (ALIGNMENT.md Rule 2).
try {
const openclawCfg = join(homedir(), ".openclaw", "openclaw.json");
if (existsSync(openclawCfg)) {
const cfg = JSON.parse(readFileSync(openclawCfg, "utf-8"));
const registered = cfg?.models?.providers?.["claude-local"]?.models ?? [];
const expected = modelsConfig.models.map(m => m.id);
const registeredIds = new Set(registered.map(r => r.id));
const missing = expected.filter(id => !registeredIds.has(id));
if (missing.length > 0) {
console.warn(`⚠ OpenClaw registry out of sync (missing: ${missing.join(", ")})`);
console.warn(` Run: node ${__dirname}/scripts/sync-openclaw.mjs`);
}
}
} catch { /* ignore — best-effort */ }
});