Files
Codeman/src/web/routes/session-routes.ts
T
arkonandClaude Fable 5 7eda39e7f7 fix(codex): reassemble chunk-split sequences before the strip; mouse parity on replay
Review fixes:

- Hold back a trailing partial CSI (digit-only intro, ≤7 chars) in
  _handleTerminalOutput and prepend it to the next chunk. PTY chunk
  boundaries are arbitrary, so '\x1b[?1049h' can arrive as '\x1b[?104' +
  '9h' — the per-chunk strip misses it, xterm obeys the reassembled toggle,
  and (with the matching ?1049l stripped) stays stuck in the scrollback-less
  alt buffer until the next replay. Complete sequences are never held; the
  carry resets with the other buffers in _resetBuffers.

- Replay path now also strips mouse-tracking enables (?1000-?1007), matching
  the live strip: buffers persisted BEFORE the live strip existed can still
  carry them, and a replayed ?1006h re-hijacks the scroll wheel.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-06-10 22:47:02 +02:00

1799 lines
68 KiB
TypeScript

/**
* @fileoverview Session management routes.
* Covers session CRUD, input/output, terminal buffer, quick-start, quick-run,
* auto-clear, auto-compact, image watcher, flicker filter, and logout.
*/
import { FastifyInstance } from 'fastify';
import { join, dirname, extname } from 'node:path';
import { homedir } from 'node:os';
import { existsSync, statSync, mkdirSync, writeFileSync } from 'node:fs';
import { execFile } from 'node:child_process';
import fs from 'node:fs/promises';
import { randomBytes } from 'node:crypto';
import {
ApiErrorCode,
createErrorResponse,
getErrorMessage,
type ApiResponse,
type SessionColor,
} from '../../types.js';
import { Session } from '../../session.js';
import { SseEvent } from '../sse-events.js';
import {
CreateSessionSchema,
SessionNameSchema,
SessionColorSchema,
RunPromptSchema,
SessionInputWithLimitSchema,
ResizeSchema,
AutoClearSchema,
AutoCompactSchema,
ImageWatcherSchema,
FlickerFilterSchema,
QuickRunSchema,
QuickStartSchema,
} from '../schemas.js';
import {
autoConfigureRalph,
CASES_DIR,
findSessionOrFail,
parseBody,
persistAndBroadcastSession,
SETTINGS_PATH,
validatePathWithinBase,
} from '../route-helpers.js';
import { AUTH_COOKIE_NAME } from '../middleware/auth.js';
import { writeHooksConfig, updateCaseModel, stripCaseEnvKeys } from '../../hooks-config.js';
import { generateClaudeMd } from '../../templates/claude-md.js';
import { imageWatcher } from '../../image-watcher.js';
import { getLifecycleLog } from '../../session-lifecycle-log.js';
import type { SessionPort, EventPort, ConfigPort, InfraPort, AuthPort } from '../ports/index.js';
import { MAX_CONCURRENT_SESSIONS } from '../../config/map-limits.js';
import { RunSummaryTracker } from '../../run-summary.js';
import { MAX_INPUT_LENGTH, MAX_SESSION_NAME_LENGTH } from '../../config/terminal-limits.js';
import { dataPath } from '../../config/instance.js';
// Path to linked-cases registry (same file used by case-routes resolveCasePath)
const LINKED_CASES_FILE = dataPath('linked-cases.json');
// Pre-compiled regex for terminal buffer cleaning (avoids per-request compilation)
// eslint-disable-next-line no-control-regex
const CLAUDE_BANNER_PATTERN = /\x1b\[1mClaud/;
// eslint-disable-next-line no-control-regex
const CTRL_L_PATTERN = /\x0c/g;
const LEADING_WHITESPACE_PATTERN = /^[\s\r\n]+/;
/**
* Match xterm alternate-screen mode toggles + the standalone scrollback-erase.
*
* - DECSET/DECRST 47, 1047, 1049 = enter/exit alternate screen buffer
* (1049 also saves cursor and clears the alt buffer).
* - CSI 3 J = erase saved lines (scrollback).
*
* Codex emits `\x1b[?1049h` and clear-scrollback sequences during startup and
* on repaint. xterm.js obeys them by switching to the alt buffer (no native
* scrollback) and wiping saved lines, so the user's conversation history
* disappears on every tab switch / pane refresh. Stripping these from the
* replayed byte stream keeps everything in the main buffer with scrollback
* intact. Mirrors the live-stream strip in Session._handleTerminalOutput.
*/
// eslint-disable-next-line no-control-regex
const ALT_SCREEN_TOGGLE_PATTERN = /\x1b\[\?(?:47|1047|1049)[hl]/g;
// eslint-disable-next-line no-control-regex
const ERASE_SCROLLBACK_PATTERN = /\x1b\[3J/g;
// Mouse-tracking enables (X10/button/any-event/UTF-8/SGR/alt-scroll) — once on,
// xterm.js forwards wheel events to the app instead of scrolling the viewport.
// Live streams are stripped at the source, but buffers persisted BEFORE that
// strip existed can still carry them; strip on replay for parity.
// eslint-disable-next-line no-control-regex
const MOUSE_TRACKING_PATTERN = /\x1b\[\?(?:1000|1001|1002|1003|1005|1006|1007)[hl]/g;
/**
* Strip redundant Ink spinner/status-bar redraw frames from the terminal buffer.
* Ink (Claude Code's TUI) uses absolute cursor positioning (CSI n d = VPA) to animate
* the spinner and update the status bar. During long thinking phases, these frames
* accumulate to 500KB+ of repeated overwrites to the same rows.
*
* Strategy: detect "redraw clusters" — dense runs of VPA escapes where each is within
* FRAME_GAP bytes of the previous (i.e. continuous rerendering of the same UI region).
* Collapse each big cluster down to just the bytes from its last VPA onwards (the final
* frame). Content *between* clusters (Claude's streamed response text) is preserved.
*
* Without clustering, a single first-VPA-finds-all approach would discard the entire
* conversation after Claude's first render — losing 100KB+ of legitimate scrollback.
*/
export function stripInkRedrawBloat(buffer: string): string {
// eslint-disable-next-line no-control-regex
const vpaRe = /\x1b\[\d+d/g;
const positions: number[] = [];
let m: RegExpExecArray | null;
while ((m = vpaRe.exec(buffer)) !== null) {
positions.push(m.index);
}
if (positions.length < 10) return buffer; // Too few VPAs to be bloat
// Group consecutive VPAs into clusters separated by gaps > FRAME_GAP.
// Within a cluster, VPAs are close together (continuous rerenders).
// Between clusters, real terminal output (response text) lives.
const FRAME_GAP = 8 * 1024; // 8KB — one Ink frame is typically 1-4KB
const MIN_BLOAT_SIZE = 32 * 1024; // Only collapse clusters spanning >= 32KB
const clusters: { start: number; end: number }[] = [];
let cs = positions[0];
let ce = positions[0];
for (let i = 1; i < positions.length; i++) {
if (positions[i] - ce <= FRAME_GAP) {
ce = positions[i];
} else {
clusters.push({ start: cs, end: ce });
cs = positions[i];
ce = positions[i];
}
}
clusters.push({ start: cs, end: ce });
// For each big cluster, replace [start..end] with the bytes from `end` onwards
// (which contains the last frame's content up to where the next cluster, or
// post-cluster content, begins).
const parts: string[] = [];
let cursor = 0;
for (const cl of clusters) {
if (cl.end - cl.start < MIN_BLOAT_SIZE) continue;
parts.push(buffer.slice(cursor, cl.start));
cursor = cl.end;
}
parts.push(buffer.slice(cursor));
return parts.join('');
}
/**
* Validate image bytes against a declared extension. Sniffs the first ~12 bytes
* for a known magic-number signature. Defends against polyglots (e.g. HTML or
* SVG disguised under a `Content-Type: image/png` header) and against simple
* extension-only spoofing — both the multipart filename and the Content-Type
* are attacker-controlled, the raw bytes are not.
*
* Signatures: https://en.wikipedia.org/wiki/List_of_file_signatures
*/
export function imageMagicMatchesExt(data: Buffer, ext: string): boolean {
if (data.length < 12) return false;
const u32be = (off: number): number => data.readUInt32BE(off);
switch (ext) {
case '.png':
return u32be(0) === 0x89504e47 && u32be(4) === 0x0d0a1a0a;
case '.jpg':
case '.jpeg':
return data[0] === 0xff && data[1] === 0xd8 && data[2] === 0xff;
case '.gif':
return (
data[0] === 0x47 &&
data[1] === 0x49 &&
data[2] === 0x46 &&
data[3] === 0x38 &&
(data[4] === 0x37 || data[4] === 0x39) &&
data[5] === 0x61
);
case '.webp':
// RIFF....WEBP
return u32be(0) === 0x52494646 && u32be(8) === 0x57454250;
case '.bmp':
return data[0] === 0x42 && data[1] === 0x4d;
default:
return false;
}
}
// Per-(IP, sessionId) token bucket for paste-image. 30 requests/minute.
// Bucket map entries are pruned when they drift > 1h stale to bound memory
// against a flood of unique IP keys.
const PASTE_RATE_TOKENS = 30;
const PASTE_RATE_REFILL_PER_MS = PASTE_RATE_TOKENS / 60_000;
const PASTE_BUCKET_TTL_MS = 60 * 60 * 1000;
const PASTE_BUCKET_GC_THRESHOLD = 1000;
const pasteRateBuckets = new Map<string, { tokens: number; lastRefill: number }>();
export function consumePasteToken(key: string, now: number = Date.now()): boolean {
if (pasteRateBuckets.size > PASTE_BUCKET_GC_THRESHOLD) {
for (const [k, b] of pasteRateBuckets) {
if (now - b.lastRefill > PASTE_BUCKET_TTL_MS) pasteRateBuckets.delete(k);
}
}
let b = pasteRateBuckets.get(key);
if (!b) {
b = { tokens: PASTE_RATE_TOKENS, lastRefill: now };
pasteRateBuckets.set(key, b);
}
const delta = (now - b.lastRefill) * PASTE_RATE_REFILL_PER_MS;
b.tokens = Math.min(PASTE_RATE_TOKENS, b.tokens + delta);
b.lastRefill = now;
if (b.tokens < 1) return false;
b.tokens -= 1;
return true;
}
// Test hook: reset between runs.
export function _resetPasteRateBuckets(): void {
pasteRateBuckets.clear();
}
export function registerSessionRoutes(
app: FastifyInstance,
ctx: SessionPort & EventPort & ConfigPort & InfraPort & AuthPort
): void {
// ═══════════════════════════════════════════════════════════════
// Auth
// ═══════════════════════════════════════════════════════════════
// ========== Logout ==========
app.post('/api/logout', async (req, reply) => {
// Invalidate server-side session token (not just the browser cookie)
const sessionToken = req.cookies[AUTH_COOKIE_NAME];
if (sessionToken) {
ctx.authSessions?.delete(sessionToken);
}
reply.clearCookie(AUTH_COOKIE_NAME, { path: '/' });
return {};
});
// ═══════════════════════════════════════════════════════════════
// Session CRUD (list, create, rename, color, delete, detail)
// ═══════════════════════════════════════════════════════════════
// ========== Session Listing ==========
app.get('/api/sessions', async () => {
return ctx.getLightSessionsState();
});
// ========== Session Creation ==========
app.post('/api/sessions', async (req) => {
// Prevent unbounded session creation
if (ctx.sessions.size >= MAX_CONCURRENT_SESSIONS) {
return createErrorResponse(
ApiErrorCode.OPERATION_FAILED,
`Maximum concurrent sessions (${MAX_CONCURRENT_SESSIONS}) reached. Delete some sessions first.`
);
}
const body = parseBody(CreateSessionSchema, req.body);
const workingDir = body.workingDir || process.cwd();
// Validate workingDir exists and is a directory
if (body.workingDir) {
try {
const stat = statSync(workingDir);
if (!stat.isDirectory()) {
return createErrorResponse(ApiErrorCode.INVALID_INPUT, 'workingDir is not a directory');
}
} catch {
return createErrorResponse(ApiErrorCode.INVALID_INPUT, 'workingDir does not exist');
}
}
// envOverrides flow through Session → tmux setenv (ephemeral, per-session).
//
// For keys the caller is actively setting, strip any stale disk entry a prior
// Codeman version may have written. Scope limited to:
// - Claude mode (OpenCode doesn't read .claude/settings.local.json)
// - workingDir inside CASES_DIR (Codeman's managed territory — we never mutate
// .claude/settings.local.json in arbitrary user repos that POST /api/sessions
// can target, because those may have hand-authored values).
const canStripDisk =
body.mode !== 'opencode' &&
body.envOverrides &&
Object.keys(body.envOverrides).length > 0 &&
workingDir.startsWith(CASES_DIR + '/');
if (canStripDisk) {
await stripCaseEnvKeys(workingDir, Object.keys(body.envOverrides!));
}
// Write model override to .claude/settings.local.json if provided
if (body.modelOverride !== undefined) {
await updateCaseModel(workingDir, body.modelOverride || null);
}
// Check OpenCode availability if requested
if (body.mode === 'opencode') {
const { isOpenCodeAvailable } = await import('../../utils/opencode-cli-resolver.js');
if (!isOpenCodeAvailable()) {
return createErrorResponse(
ApiErrorCode.OPERATION_FAILED,
'OpenCode CLI not found. Install with: curl -fsSL https://opencode.ai/install | bash'
);
}
}
// Check Codex availability if requested
if (body.mode === 'codex') {
const { isCodexAvailable } = await import('../../utils/codex-cli-resolver.js');
if (!isCodexAvailable()) {
return createErrorResponse(
ApiErrorCode.OPERATION_FAILED,
'Codex CLI not found. Install with: npm install -g @openai/codex'
);
}
}
// Pre-validate resumeSessionId: check that the conversation file actually exists
// in Claude's projects directory. If not, skip resume to avoid confusing
// "No conversation found" errors from Claude CLI.
let validatedResumeId = body.resumeSessionId;
if (validatedResumeId) {
const projectsDir = join(process.env.HOME || '/tmp', '.claude', 'projects');
let found = false;
try {
const projectDirs = await fs.readdir(projectsDir);
for (const projDir of projectDirs) {
const sessionFile = join(projectsDir, projDir, `${validatedResumeId}.jsonl`);
try {
const stat = await fs.stat(sessionFile);
if (stat.size > 4000) {
found = true;
break;
}
} catch {
// File doesn't exist in this project dir
}
}
} catch {
// Projects dir doesn't exist
}
if (!found) {
console.log(`[Session] Resume session ${validatedResumeId} not found on disk, starting fresh`);
validatedResumeId = undefined;
}
}
const globalNice = await ctx.getGlobalNiceConfig();
const modelConfig = await ctx.getModelConfig();
const mode = body.mode || 'claude';
const model =
mode === 'opencode'
? body.openCodeConfig?.model
: mode === 'codex'
? body.codexConfig?.model
: mode !== 'shell'
? modelConfig?.defaultModel || undefined
: undefined;
const claudeModeConfig = await ctx.getClaudeModeConfig();
const session = new Session({
workingDir,
mode,
name: body.name || '',
mux: ctx.mux,
useMux: true,
niceConfig: globalNice,
model,
claudeMode: claudeModeConfig.claudeMode,
allowedTools: claudeModeConfig.allowedTools,
openCodeConfig: mode === 'opencode' ? body.openCodeConfig : undefined,
codexConfig: mode === 'codex' ? body.codexConfig : undefined,
resumeSessionId: validatedResumeId,
envOverrides: body.envOverrides,
effort: body.effort,
});
ctx.addSession(session);
ctx.store.incrementSessionsCreated();
ctx.persistSessionState(session);
await ctx.setupSessionListeners(session);
getLifecycleLog().log({ event: 'created', sessionId: session.id, name: session.name });
// Use light state for broadcast + response — buffers are fetched on-demand via /terminal.
// Avoids serializing 2-3MB of terminal+text buffers per session creation.
const lightState = ctx.getSessionStateWithRespawn(session);
ctx.broadcast(SseEvent.SessionCreated, lightState);
return { session: lightState };
});
// ========== Rename Session ==========
app.put('/api/sessions/:id/name', async (req) => {
const { id } = req.params as { id: string };
const body = parseBody(SessionNameSchema, req.body, 'Invalid request body');
const session = findSessionOrFail(ctx, id);
const name = String(body.name || '').slice(0, MAX_SESSION_NAME_LENGTH);
session.name = name;
// Also update the mux session name if applicable
ctx.mux.updateSessionName(id, session.name);
persistAndBroadcastSession(ctx, session);
return { name: session.name };
});
// ========== Set Session Color ==========
app.put('/api/sessions/:id/color', async (req) => {
const { id } = req.params as { id: string };
const body = parseBody(SessionColorSchema, req.body, 'Invalid request body');
const session = findSessionOrFail(ctx, id);
const validColors = ['default', 'red', 'orange', 'yellow', 'green', 'blue', 'purple', 'pink'];
if (!validColors.includes(body.color)) {
return createErrorResponse(ApiErrorCode.INVALID_INPUT, 'Invalid color');
}
session.setColor(body.color as SessionColor);
persistAndBroadcastSession(ctx, session);
return { color: session.color };
});
// ========== Delete Session ==========
app.delete('/api/sessions/:id', async (req) => {
const { id } = req.params as { id: string };
const query = req.query as { killMux?: string };
const killMux = query.killMux !== 'false'; // Default to true
if (!ctx.sessions.has(id)) {
return createErrorResponse(ApiErrorCode.NOT_FOUND, 'Session not found');
}
await ctx.cleanupSession(id, killMux, 'user_delete');
return {};
});
// ========== Delete All Sessions ==========
app.delete('/api/sessions', async (): Promise<ApiResponse<{ killed: number }>> => {
const sessionIds = Array.from(ctx.sessions.keys());
let killed = 0;
for (const id of sessionIds) {
if (ctx.sessions.has(id)) {
await ctx.cleanupSession(id, true, 'user_bulk_delete');
killed++;
}
}
return { success: true, data: { killed } };
});
// ========== Get Session Detail ==========
app.get('/api/sessions/:id', async (req) => {
const { id } = req.params as { id: string };
const session = findSessionOrFail(ctx, id);
// Use light state (no full buffers) — terminal buffer available via /terminal endpoint.
// Full buffers were 2-3MB and caused slowness when polled frequently (e.g. Ralph wizard).
return ctx.getSessionStateWithRespawn(session);
});
// ═══════════════════════════════════════════════════════════════
// Session Data (output, ralph state, run summary, active tools)
// ═══════════════════════════════════════════════════════════════
// ========== Get Session Output ==========
app.get('/api/sessions/:id/output', async (req) => {
const { id } = req.params as { id: string };
const session = findSessionOrFail(ctx, id);
return {
success: true,
data: {
textOutput: session.textOutput,
messages: session.messages,
errorBuffer: session.errorBuffer,
},
};
});
// ========== Get Ralph State ==========
app.get('/api/sessions/:id/ralph-state', async (req) => {
const { id } = req.params as { id: string };
const session = findSessionOrFail(ctx, id);
return {
success: true,
data: {
loop: session.ralphLoopState,
todos: session.ralphTodos,
todoStats: session.ralphTodoStats,
},
};
});
// ========== Get Run Summary ==========
app.get('/api/sessions/:id/run-summary', async (req) => {
const { id } = req.params as { id: string };
const session = findSessionOrFail(ctx, id);
const tracker = ctx.runSummaryTrackers.get(id);
if (!tracker) {
// Create a fresh tracker if one doesn't exist (shouldn't happen normally)
const newTracker = new RunSummaryTracker(id, session.name);
ctx.runSummaryTrackers.set(id, newTracker);
return { summary: newTracker.getSummary() };
}
// Update session name in case it changed
tracker.setSessionName(session.name);
return { summary: tracker.getSummary() };
});
// ========== Get Active Tools ==========
app.get('/api/sessions/:id/active-tools', async (req) => {
const { id } = req.params as { id: string };
const session = findSessionOrFail(ctx, id);
return {
success: true,
data: {
tools: session.activeTools,
},
};
});
// ═══════════════════════════════════════════════════════════════
// Session Execution (run prompt, interactive mode, shell mode)
// ═══════════════════════════════════════════════════════════════
// ========== Run Prompt ==========
app.post('/api/sessions/:id/run', async (req) => {
const { id } = req.params as { id: string };
const { prompt } = parseBody(RunPromptSchema, req.body);
const session = findSessionOrFail(ctx, id);
if (session.isBusy()) {
return createErrorResponse(ApiErrorCode.SESSION_BUSY, 'Session is busy');
}
// Run async, don't wait
session.runPrompt(prompt).catch((err) => {
ctx.broadcast(SseEvent.SessionError, { id, error: err.message });
});
ctx.broadcast(SseEvent.SessionRunning, { id, prompt });
return {};
});
// ========== Start Interactive Mode ==========
app.post('/api/sessions/:id/interactive', async (req) => {
const { id } = req.params as { id: string };
const session = findSessionOrFail(ctx, id);
if (session.isBusy()) {
return createErrorResponse(ApiErrorCode.SESSION_BUSY, 'Session is busy');
}
try {
// Auto-detect completion phrase from CLAUDE.md BEFORE starting (only if globally enabled and not explicitly disabled by user)
// Ralph tracker is not supported for opencode sessions
if (
session.mode !== 'opencode' &&
ctx.store.getConfig().ralphEnabled &&
!session.ralphTracker.autoEnableDisabled
) {
autoConfigureRalph(session, session.workingDir, ctx);
if (!session.ralphTracker.enabled) {
session.ralphTracker.enable();
}
}
await session.startInteractive();
getLifecycleLog().log({
event: 'started',
sessionId: id,
name: session.name,
mode: session.mode,
});
ctx.broadcast(SseEvent.SessionInteractive, { id });
ctx.broadcast(SseEvent.SessionUpdated, { session: ctx.getSessionStateWithRespawn(session) });
return {};
} catch (err) {
return createErrorResponse(ApiErrorCode.OPERATION_FAILED, getErrorMessage(err));
}
});
// ========== Start Shell Mode ==========
app.post('/api/sessions/:id/shell', async (req) => {
const { id } = req.params as { id: string };
const session = findSessionOrFail(ctx, id);
if (session.isBusy()) {
return createErrorResponse(ApiErrorCode.SESSION_BUSY, 'Session is busy');
}
try {
await session.startShell();
getLifecycleLog().log({
event: 'started',
sessionId: id,
name: session.name,
mode: 'shell',
});
ctx.broadcast(SseEvent.SessionInteractive, { id, mode: 'shell' });
ctx.broadcast(SseEvent.SessionUpdated, { session: ctx.getSessionStateWithRespawn(session) });
return {};
} catch (err) {
return createErrorResponse(ApiErrorCode.OPERATION_FAILED, getErrorMessage(err));
}
});
// ═══════════════════════════════════════════════════════════════
// Terminal I/O (input, resize, buffer)
// ═══════════════════════════════════════════════════════════════
// ========== Send Input ==========
app.post('/api/sessions/:id/input', async (req) => {
const { id } = req.params as { id: string };
const { input, useMux } = parseBody(SessionInputWithLimitSchema, req.body);
const session = findSessionOrFail(ctx, id);
const inputStr = String(input);
if (inputStr.length > MAX_INPUT_LENGTH) {
return createErrorResponse(
ApiErrorCode.INVALID_INPUT,
`Input exceeds maximum length (${MAX_INPUT_LENGTH} bytes)`
);
}
// Write input to PTY. Direct write is synchronous; writeViaMux
// (tmux send-keys) is fire-and-forget to avoid blocking the HTTP response.
if (useMux) {
// Fire-and-forget: don't block HTTP response on tmux child process.
// Fallback to direct write on failure.
session
.writeViaMux(inputStr)
.then((ok) => {
if (!ok) {
console.warn(`[Server] writeViaMux failed for session ${id}, falling back to direct write`);
session.write(inputStr);
}
})
.catch(() => {
session.write(inputStr);
});
} else {
session.write(inputStr);
}
return {};
});
// ========== Send Named Key (tmux send-keys -H) ==========
// Sends raw hex bytes to tmux pane for keys like Shift+Enter / Ctrl+Enter.
// Uses send-keys -H (hex) to inject 0x0a (line feed) which Claude Code's
// Ink input recognizes as "insert newline" vs 0x0d (carriage return = submit).
app.post('/api/sessions/:id/send-key', async (req) => {
const { id } = req.params as { id: string };
const body = req.body as Record<string, unknown>;
const key = typeof body?.key === 'string' ? body.key : '';
// Map key names to hex byte sequences
const KEY_HEX_MAP: Record<string, string[]> = {
'S-Enter': ['0a'], // \n (line feed)
'C-Enter': ['0a'], // \n (line feed)
};
const hex = KEY_HEX_MAP[key];
if (!hex) {
return createErrorResponse(ApiErrorCode.INVALID_INPUT, `Key not allowed: ${key}`);
}
const session = findSessionOrFail(ctx, id);
const muxName = session.muxName;
if (!muxName) {
return createErrorResponse(ApiErrorCode.INVALID_INPUT, 'No tmux session');
}
try {
// Route through the dedicated Codeman socket — bare `tmux` would target the
// user's default server and never find this session (same #80 regression class).
await new Promise<void>((resolve, reject) => {
execFile(
'tmux',
['-L', ctx.mux.muxSocket, 'send-keys', '-H', '-t', muxName, ...hex],
{ timeout: 5000 },
(err) => {
if (err) reject(err);
else resolve();
}
);
});
} catch (err) {
console.error('[Server] send-key failed:', err);
return createErrorResponse(ApiErrorCode.INTERNAL_ERROR, 'tmux send-keys failed');
}
return {};
});
// ========== Resize Terminal ==========
app.post('/api/sessions/:id/resize', async (req) => {
const { id } = req.params as { id: string };
const { cols, rows, viewportType } = parseBody(ResizeSchema, req.body);
const session = findSessionOrFail(ctx, id);
if (viewportType) {
session.resize(cols, rows, { viewportType });
} else {
session.resize(cols, rows);
}
return {};
});
// ========== Get Last Response (from transcript JSONL) ==========
// Resolves the most recent Claude conversation id for a session's cwd by
// tailing ~/.claude/history.jsonl. After `/clear`, Claude Code keeps writing
// to a new <uuid>.jsonl; history.jsonl is the only source-of-truth update
// that does not rely on project-local hooks (we intentionally don't install
// hooks in arbitrary user repos, see the POST /api/sessions comment).
//
// Entries from OTHER Codeman sessions in the same cwd are filtered out by
// their known claudeSessionIds so concurrent tabs don't shadow each other,
// as long as each has had its id resolved at least once.
async function resolveActiveClaudeSessionIdFromHistory(
session: Session,
projectsDir: string
): Promise<string | null> {
const historyPath = join(homedir(), '.claude', 'history.jsonl');
const otherClaudeIds = new Set<string>();
for (const s of ctx.sessions.values()) {
if (s.id !== session.id && s.workingDir === session.workingDir && s.claudeSessionId) {
otherClaudeIds.add(s.claudeSessionId);
}
}
let candidateSid: string | null = null;
try {
const content = await fs.readFile(historyPath, 'utf8');
const lines = content.split('\n');
for (let i = lines.length - 1; i >= 0; i--) {
const line = lines[i];
if (!line) continue;
try {
const entry = JSON.parse(line) as { project?: string; sessionId?: string };
if (
entry.project === session.workingDir &&
typeof entry.sessionId === 'string' &&
!otherClaudeIds.has(entry.sessionId)
) {
candidateSid = entry.sessionId;
break;
}
} catch {
// Skip unparseable lines
}
}
} catch {
return null;
}
if (!candidateSid || candidateSid === session.id) return candidateSid;
// Safety: only adopt if the candidate's jsonl is more recently written
// than our initial conversation's jsonl. Blocks stale ids inherited from
// a prior Codeman session that happened to share this cwd.
try {
const projectDirs = await fs.readdir(projectsDir);
let candidateMtime = 0;
let initialMtime = 0;
for (const projDir of projectDirs) {
try {
const cs = await fs.stat(join(projectsDir, projDir, `${candidateSid}.jsonl`));
if (cs.mtimeMs > candidateMtime) candidateMtime = cs.mtimeMs;
} catch {
/* not in this dir */
}
try {
const is = await fs.stat(join(projectsDir, projDir, `${session.id}.jsonl`));
if (is.mtimeMs > initialMtime) initialMtime = is.mtimeMs;
} catch {
/* not in this dir */
}
}
if (candidateMtime === 0) return null;
if (initialMtime > 0 && candidateMtime <= initialMtime) return null;
} catch {
return null;
}
return candidateSid;
}
app.get('/api/sessions/:id/last-response', async (req) => {
const { id } = req.params as { id: string };
const session = findSessionOrFail(ctx, id);
// Scan ~/.claude/projects/*/ for the transcript file
const projectsDir = join(process.env.HOME || '/tmp', '.claude', 'projects');
// Adopt the current conversation id if the user ran `/clear` — Claude CLI's
// interactive PTY emits no JSON on stdout, so without this lookup the
// stored id stays pinned to the pre-/clear transcript.
const activeId = await resolveActiveClaudeSessionIdFromHistory(session, projectsDir);
if (activeId && activeId !== session.claudeSessionId) {
session.adoptClaudeSessionId(activeId);
}
// The Claude conversation ID (used as JSONL filename)
const claudeSessionId = session.claudeSessionId || session.id;
let transcriptText = '';
let transcriptTimestamp = '';
try {
const projectDirs = await fs.readdir(projectsDir);
for (const projDir of projectDirs) {
const jsonlPath = join(projectsDir, projDir, `${claudeSessionId}.jsonl`);
try {
const content = await fs.readFile(jsonlPath, 'utf8');
const lines = content.trim().split('\n');
// Search from end for last assistant message with text
for (let i = lines.length - 1; i >= 0; i--) {
try {
const entry = JSON.parse(lines[i]);
if (entry.type === 'assistant' && entry.message?.content) {
const blocks = Array.isArray(entry.message.content)
? entry.message.content
: [{ type: 'text', text: String(entry.message.content) }];
const textBlocks = blocks
.filter((b: { type: string; text?: string }) => b.type === 'text' && b.text)
.map((b: { type: string; text?: string }) => b.text);
if (textBlocks.length > 0) {
transcriptText = textBlocks.join('\n\n');
transcriptTimestamp = entry.timestamp || '';
break;
}
}
} catch {
// Skip unparseable lines
}
}
if (transcriptText) break; // Found it, stop scanning directories
} catch {
// File doesn't exist in this project dir, continue
}
}
} catch {
// projects dir doesn't exist
}
// If ?context=full, return all user+assistant messages for conversation view
const query = req.query as { context?: string };
if (query.context === 'full' && transcriptText) {
const allMessages: Array<{ role: string; text: string; timestamp?: string }> = [];
try {
const projectDirs = await fs.readdir(projectsDir);
for (const projDir of projectDirs) {
const jsonlPath = join(projectsDir, projDir, `${claudeSessionId}.jsonl`);
try {
const content = await fs.readFile(jsonlPath, 'utf8');
const lines = content.trim().split('\n');
for (const line of lines) {
try {
const entry = JSON.parse(line);
if (entry.type === 'user' && entry.message?.content) {
const text =
typeof entry.message.content === 'string'
? entry.message.content
: (entry.message.content as Array<{ type: string; text?: string }>)
.filter((b) => b.type === 'text' && b.text)
.map((b) => b.text)
.join('\n');
// Skip system/command messages
if (text && !text.startsWith('<local-command') && !text.startsWith('<command-name>')) {
allMessages.push({ role: 'user', text, timestamp: entry.timestamp });
}
} else if (entry.type === 'assistant' && entry.message?.content) {
const blocks = Array.isArray(entry.message.content)
? entry.message.content
: [{ type: 'text', text: String(entry.message.content) }];
const text = blocks
.filter((b: { type: string; text?: string }) => b.type === 'text' && b.text)
.map((b: { type: string; text?: string }) => b.text)
.join('\n\n');
if (text) {
allMessages.push({ role: 'assistant', text, timestamp: entry.timestamp });
}
}
} catch {
/* skip */
}
}
if (allMessages.length > 0) break;
} catch {
/* continue */
}
}
} catch {
/* ignore */
}
return { text: transcriptText, timestamp: transcriptTimestamp, messages: allMessages };
}
return {
text: transcriptText,
timestamp: transcriptTimestamp,
};
});
// ========== Get Terminal Buffer ==========
// Query params:
// tail=<bytes> - Only return last N bytes (faster initial load)
app.get('/api/sessions/:id/terminal', async (req) => {
const { id } = req.params as { id: string };
const query = req.query as { tail?: string };
const session = findSessionOrFail(ctx, id);
const rawBuffer = session.terminalBuffer;
const tailBytes = query.tail ? parseInt(query.tail, 10) : 0;
const fullSize = rawBuffer.length;
let truncated = false;
let cleanBuffer: string;
// Strip redundant Ink spinner/status redraws BEFORE tailing.
// During long thinking phases, Ink rewrites the same rows thousands of times
// (500KB+). Without stripping, tail mode returns only spinner frames and
// the terminal appears empty when switching tabs.
let strippedBuffer = stripInkRedrawBloat(rawBuffer);
// Strip alt-screen toggles and scrollback-erase from codex byte streams.
// xterm.js obeys them by switching to its scrollback-less alt buffer and
// wiping saved lines, so conversation history disappears on tab switch.
if (session.mode === 'codex') {
strippedBuffer = strippedBuffer
.replace(ALT_SCREEN_TOGGLE_PATTERN, '')
.replace(ERASE_SCROLLBACK_PATTERN, '')
.replace(MOUSE_TRACKING_PATTERN, '');
}
if (tailBytes > 0 && strippedBuffer.length > tailBytes) {
// Fast path: tail from the end, skip expensive banner search on full 2MB buffer.
// Banner is near the top and gets discarded by tail anyway.
cleanBuffer = strippedBuffer.slice(-tailBytes);
truncated = true;
// Avoid starting mid-ANSI-escape: find first newline within the first 4KB
// and start from there. This prevents xterm.js from parsing a partial escape
// sequence which corrupts cursor position for all subsequent Ink redraws.
const firstNewline = cleanBuffer.indexOf('\n');
if (firstNewline > 0 && firstNewline < 4096) {
cleanBuffer = cleanBuffer.slice(firstNewline + 1);
}
} else {
// Full buffer: clean junk before actual Claude content
cleanBuffer = strippedBuffer;
// Find where Claude banner starts (has color codes before "Claude")
const claudeMatch = cleanBuffer.match(CLAUDE_BANNER_PATTERN);
if (claudeMatch && claudeMatch.index !== undefined && claudeMatch.index > 0) {
let lineStart = claudeMatch.index;
while (lineStart > 0 && cleanBuffer[lineStart - 1] !== '\n') {
lineStart--;
}
cleanBuffer = cleanBuffer.slice(lineStart);
}
}
// Remove Ctrl+L and leading whitespace (cheap on tailed subset)
cleanBuffer = cleanBuffer.replace(CTRL_L_PATTERN, '').replace(LEADING_WHITESPACE_PATTERN, '');
return {
terminalBuffer: cleanBuffer,
status: session.status,
fullSize,
truncated,
};
});
// ═══════════════════════════════════════════════════════════════
// Session Settings (auto-clear, auto-compact, image watcher, flicker filter)
// ═══════════════════════════════════════════════════════════════
// ========== Auto-Clear ==========
app.post('/api/sessions/:id/auto-clear', async (req) => {
const { id } = req.params as { id: string };
const body = parseBody(AutoClearSchema, req.body, 'Invalid request body');
const session = findSessionOrFail(ctx, id);
session.setAutoClear(body.enabled, body.threshold);
persistAndBroadcastSession(ctx, session);
return {
success: true,
data: {
autoClear: {
enabled: session.autoClearEnabled,
threshold: session.autoClearThreshold,
},
},
};
});
// ========== Auto-Compact ==========
app.post('/api/sessions/:id/auto-compact', async (req) => {
const { id } = req.params as { id: string };
const body = parseBody(AutoCompactSchema, req.body, 'Invalid request body');
const session = findSessionOrFail(ctx, id);
session.setAutoCompact(body.enabled, body.threshold, body.prompt);
persistAndBroadcastSession(ctx, session);
return {
success: true,
data: {
autoCompact: {
enabled: session.autoCompactEnabled,
threshold: session.autoCompactThreshold,
prompt: session.autoCompactPrompt,
},
},
};
});
// ========== Image Watcher ==========
app.post('/api/sessions/:id/image-watcher', async (req) => {
const { id } = req.params as { id: string };
const body = parseBody(ImageWatcherSchema, req.body, 'Invalid request body');
const session = findSessionOrFail(ctx, id);
if (body.enabled) {
imageWatcher.watchSession(session.id, session.workingDir);
} else {
imageWatcher.unwatchSession(session.id);
}
// Store state on session for persistence
session.imageWatcherEnabled = body.enabled;
ctx.persistSessionState(session);
return {
success: true,
data: {
imageWatcherEnabled: body.enabled,
},
};
});
// ========== Flicker Filter ==========
app.post('/api/sessions/:id/flicker-filter', async (req) => {
const { id } = req.params as { id: string };
const body = parseBody(FlickerFilterSchema, req.body, 'Invalid request body');
const session = findSessionOrFail(ctx, id);
session.flickerFilterEnabled = body.enabled;
persistAndBroadcastSession(ctx, session);
return {
success: true,
data: {
flickerFilterEnabled: body.enabled,
},
};
});
// ═══════════════════════════════════════════════════════════════
// Quick Actions (quick-run, quick-start)
// ═══════════════════════════════════════════════════════════════
// ========== Quick Run ==========
app.post('/api/run', async (req) => {
// Prevent unbounded session creation
if (ctx.sessions.size >= MAX_CONCURRENT_SESSIONS) {
return createErrorResponse(
ApiErrorCode.SESSION_BUSY,
`Maximum concurrent sessions (${MAX_CONCURRENT_SESSIONS}) reached`
);
}
const {
prompt,
workingDir,
envOverrides: runEnvOverrides,
} = parseBody(QuickRunSchema, req.body, 'Invalid request body');
if (!prompt.trim()) {
return createErrorResponse(ApiErrorCode.INVALID_INPUT, 'prompt is required');
}
const dir = workingDir || process.cwd();
// Validate workingDir exists and is a directory
if (workingDir) {
try {
const stat = statSync(dir);
if (!stat.isDirectory()) {
return createErrorResponse(ApiErrorCode.INVALID_INPUT, 'workingDir is not a directory');
}
} catch {
return createErrorResponse(ApiErrorCode.INVALID_INPUT, 'workingDir does not exist');
}
}
const session = new Session({ workingDir: dir, envOverrides: runEnvOverrides });
ctx.addSession(session);
ctx.store.incrementSessionsCreated();
ctx.persistSessionState(session);
await ctx.setupSessionListeners(session);
getLifecycleLog().log({
event: 'created',
sessionId: session.id,
name: session.name,
reason: 'run_prompt',
});
ctx.broadcast(SseEvent.SessionCreated, ctx.getSessionStateWithRespawn(session));
try {
const result = await session.runPrompt(prompt);
// Clean up session after completion to prevent memory leak
await ctx.cleanupSession(session.id, true, 'run_prompt_complete');
return { sessionId: session.id, ...result };
} catch (err) {
// Clean up session on error too. The session is destroyed here, so its id
// is only useful for log correlation — carry it in the error message.
await ctx.cleanupSession(session.id, true, 'run_prompt_error');
return createErrorResponse(ApiErrorCode.OPERATION_FAILED, `${getErrorMessage(err)} (session ${session.id})`);
}
});
// ========== Quick Start ==========
app.post('/api/quick-start', async (req) => {
// Prevent unbounded session creation
if (ctx.sessions.size >= MAX_CONCURRENT_SESSIONS) {
return createErrorResponse(
ApiErrorCode.SESSION_BUSY,
`Maximum concurrent sessions (${MAX_CONCURRENT_SESSIONS}) reached.`
);
}
const {
caseName = 'testcase',
mode = 'claude',
openCodeConfig,
codexConfig,
envOverrides,
effort,
} = parseBody(QuickStartSchema, req.body);
// Check OpenCode availability if requested
if (mode === 'opencode') {
const { isOpenCodeAvailable } = await import('../../utils/opencode-cli-resolver.js');
if (!isOpenCodeAvailable()) {
return createErrorResponse(
ApiErrorCode.OPERATION_FAILED,
'OpenCode CLI not found. Install with: curl -fsSL https://opencode.ai/install | bash'
);
}
}
// Check Codex availability if requested
if (mode === 'codex') {
const { isCodexAvailable } = await import('../../utils/codex-cli-resolver.js');
if (!isCodexAvailable()) {
return createErrorResponse(
ApiErrorCode.OPERATION_FAILED,
'Codex CLI not found. Install with: npm install -g @openai/codex'
);
}
}
// Resolve case path: check linked-cases registry first, then fall back to CASES_DIR.
// This mirrors the behaviour of resolveCasePath() in case-routes so that linked
// external project directories are honoured by quick-start just like regular case routes.
let linkedCases: Record<string, string> = {};
try {
const raw = await fs.readFile(LINKED_CASES_FILE, 'utf-8');
linkedCases = JSON.parse(raw);
} catch {
// File missing or unparseable — treat as empty registry
}
const linkedCasePath = linkedCases[caseName];
const casePath = linkedCasePath || validatePathWithinBase(caseName, CASES_DIR);
if (!casePath) {
return createErrorResponse(ApiErrorCode.INVALID_INPUT, 'Invalid case path');
}
// Create case folder and CLAUDE.md if it doesn't exist (only for non-linked cases)
if (!existsSync(casePath)) {
try {
mkdirSync(casePath, { recursive: true });
mkdirSync(join(casePath, 'src'), { recursive: true });
// Read settings to get custom template path
const templatePath = await ctx.getDefaultClaudeMdPath();
const claudeMd = generateClaudeMd(caseName, '', templatePath);
writeFileSync(join(casePath, 'CLAUDE.md'), claudeMd);
// Write .claude/settings.local.json with hooks for desktop notifications
// (Claude-specific — OpenCode uses its own plugin system)
if (mode !== 'opencode') {
await writeHooksConfig(casePath);
}
ctx.broadcast(SseEvent.CaseCreated, { name: caseName, path: casePath });
} catch (err) {
return createErrorResponse(ApiErrorCode.OPERATION_FAILED, `Failed to create case: ${getErrorMessage(err)}`);
}
}
// Strip stale disk entries for keys this request is actively setting (Claude only —
// see POST /api/sessions for full rationale).
if (mode !== 'opencode' && envOverrides && Object.keys(envOverrides).length > 0) {
await stripCaseEnvKeys(casePath, Object.keys(envOverrides));
}
// Create a new session with the case as working directory
// Apply global Nice priority config and model config from settings
const niceConfig = await ctx.getGlobalNiceConfig();
const qsModelConfig = await ctx.getModelConfig();
const qsModel =
mode === 'opencode'
? openCodeConfig?.model
: mode === 'codex'
? codexConfig?.model
: mode !== 'shell'
? qsModelConfig?.defaultModel || undefined
: undefined;
const qsClaudeModeConfig = await ctx.getClaudeModeConfig();
const session = new Session({
workingDir: casePath,
mux: ctx.mux,
useMux: true,
mode: mode,
niceConfig: niceConfig,
model: qsModel,
claudeMode: qsClaudeModeConfig.claudeMode,
allowedTools: qsClaudeModeConfig.allowedTools,
openCodeConfig: mode === 'opencode' ? openCodeConfig : undefined,
codexConfig: mode === 'codex' ? codexConfig : undefined,
envOverrides,
effort,
});
// Auto-detect completion phrase from CLAUDE.md BEFORE broadcasting
// so the initial state already has the phrase configured (only if globally enabled)
if (mode === 'claude' && ctx.store.getConfig().ralphEnabled) {
autoConfigureRalph(session, casePath, ctx);
if (!session.ralphTracker.enabled) {
session.ralphTracker.enable();
session.ralphTracker.enableAutoEnable(); // Allow re-enabling on restart
}
}
ctx.addSession(session);
ctx.store.incrementSessionsCreated();
ctx.persistSessionState(session);
await ctx.setupSessionListeners(session);
getLifecycleLog().log({
event: 'created',
sessionId: session.id,
name: session.name,
reason: 'quick_start',
});
ctx.broadcast(SseEvent.SessionCreated, ctx.getSessionStateWithRespawn(session));
// Start in the appropriate mode
try {
if (mode === 'shell') {
await session.startShell();
getLifecycleLog().log({
event: 'started',
sessionId: session.id,
name: session.name,
mode: 'shell',
});
ctx.broadcast(SseEvent.SessionInteractive, { id: session.id, mode: 'shell' });
} else {
// Both 'claude' and 'opencode' modes use startInteractive()
await session.startInteractive();
getLifecycleLog().log({
event: 'started',
sessionId: session.id,
name: session.name,
mode,
});
ctx.broadcast(SseEvent.SessionInteractive, { id: session.id, mode });
}
ctx.broadcast(SseEvent.SessionUpdated, { session: ctx.getSessionStateWithRespawn(session) });
// Save lastUsedCase to settings for TUI/web sync
try {
const settingsFilePath = SETTINGS_PATH;
let settings: Record<string, unknown> = {};
try {
settings = JSON.parse(await fs.readFile(settingsFilePath, 'utf-8'));
} catch (err) {
if ((err as NodeJS.ErrnoException).code !== 'ENOENT') throw err;
}
settings.lastUsedCase = caseName;
const dir = dirname(settingsFilePath);
if (!existsSync(dir)) {
mkdirSync(dir, { recursive: true });
}
// Use async write to avoid blocking event loop
fs.writeFile(settingsFilePath, JSON.stringify(settings, null, 2)).catch((err) => {
// Non-critical but log for debugging
console.warn('[Server] Failed to save settings (lastUsedCase):', err);
});
} catch (err) {
// Non-critical but log for debugging
console.warn('[Server] Failed to prepare settings update:', err);
}
return {
sessionId: session.id,
casePath,
caseName,
};
} catch (err) {
// Clean up session on error to prevent orphaned resources
await ctx.cleanupSession(session.id, true, 'quick_start_error');
return createErrorResponse(ApiErrorCode.OPERATION_FAILED, getErrorMessage(err));
}
});
// ═══════════════════════════════════════════════════════════════
// History — list past Claude conversations for resume
// ═══════════════════════════════════════════════════════════════
/** Extract the text of the first user message from a JSONL transcript head. */
function extractFirstUserPrompt(head: string): string | undefined {
const MAX_PROMPT_LEN = 120;
// Iterate lines without allocating a full split array
let start = 0;
while (start < head.length) {
const end = head.indexOf('\n', start);
const line = end === -1 ? head.slice(start) : head.slice(start, end);
start = end === -1 ? head.length : end + 1;
if (!line.includes('"type":"user"')) continue;
try {
const entry = JSON.parse(line);
if (entry.type !== 'user' || !entry.message) continue;
const content = entry.message.content;
let text: string | undefined;
if (typeof content === 'string') {
text = content;
} else if (Array.isArray(content)) {
const textBlock = content.find((b: { type: string }) => b.type === 'text');
if (textBlock) text = textBlock.text;
}
if (!text) continue;
// Strip XML-like system/command tags and ANSI escapes from transcripts
text = text
.replace(/<[^>]+>/g, '')
.replace(new RegExp(String.raw`\x1b\[[0-9;]*[a-zA-Z]`, 'g'), '')
.trim()
.replace(/\s+/g, ' ');
if (!text) continue;
// Skip system-injected messages, slash command artifacts, and expanded skill prompts
if (
/^(Caveat:|init\b|clear\b|resume\b|\/[a-z][\w-]*\b|You are a |\[Request |Set model to )/i.test(text) ||
/^(Please )?(analyze|review) this codebase/i.test(text) ||
/^(Read|Implement the following) .+, then (search|list|check) /i.test(text) ||
/^\d+ vulnerabilit/i.test(text) ||
/\btoolu_/.test(text) ||
/^[A-Za-z0-9_-]{20,}\.[A-Za-z0-9_-]+/.test(text) ||
/\b(sk-ant-|ANTHROPIC_API_KEY|API_KEY=|SECRET|TOKEN=)/i.test(text) ||
text.length < 8
)
continue;
return text.length > MAX_PROMPT_LEN ? text.slice(0, MAX_PROMPT_LEN) + '\u2026' : text;
} catch {
// Malformed line — skip
}
}
return undefined;
}
/**
* Decode a Claude project key (e.g. "-Users-teigen-Documents-Workspace-AI-project-Mirror")
* back to a filesystem path ("/Users/teigen/Documents/Workspace/AI_project/Mirror").
*
* Claude CLI encodes both '/' and '_' as '-', so each '-' in the key could be
* any of: '/' (path separator), '_' (underscore), or '-' (literal dash).
*
* Strategy: recursive backtracking with longest-match-first preference.
* At each segment boundary, try joining as many segments as possible (with '_'
* or '-') into a single existing directory name. If a shorter match leads to a
* dead end, backtrack and try the next-shorter candidate.
*
* Why backtracking: when both `diary/` and `diary-app/` exist as siblings, the
* naive shortest-match would pick `diary` and then fail to find `app` inside,
* leaving the rest of the key unresolved. Longest-first picks `diary-app`.
*/
async function decodeProjectKey(projKey: string): Promise<string> {
const encoded = projKey.startsWith('-') ? projKey.slice(1) : projKey;
const segments = encoded.split('-');
const isDirCache = new Map<string, boolean>();
const isDir = async (p: string): Promise<boolean> => {
const cached = isDirCache.get(p);
if (cached !== undefined) return cached;
const result = await fs
.stat(p)
.then((s) => s.isDirectory())
.catch(() => false);
isDirCache.set(p, result);
return result;
};
// Recursive backtracking: returns the deepest valid path that consumes all
// segments. Tries the longest segment-join first at each step so that
// dash-containing directory names win over shorter same-prefix siblings.
async function tryDecode(idx: number, current: string): Promise<string | null> {
if (idx >= segments.length) return current;
const maxLook = Math.min(idx + 4, segments.length);
// Longest first: end = maxLook-1 down to idx
for (let end = maxLook - 1; end >= idx; end--) {
const candidates: string[] = [];
if (end === idx) {
candidates.push(segments[idx]);
} else {
candidates.push(segments.slice(idx, end + 1).join('-'));
candidates.push(segments.slice(idx, end + 1).join('_'));
}
for (const child of candidates) {
const candidate = current + '/' + child;
if (await isDir(candidate)) {
const result = await tryDecode(end + 1, candidate);
if (result) return result;
}
}
}
return null;
}
const decoded = await tryDecode(0, '');
if (decoded) return decoded;
// Fallback: greedy shortest-match (original behavior) — best effort when
// no fully-valid path exists (e.g. directory was deleted after the
// conversation was recorded).
let current = '';
let i = 0;
while (i < segments.length) {
let matched = false;
const maxLook = Math.min(i + 4, segments.length);
for (let end = i; end < maxLook; end++) {
const candidates: string[] = [];
if (end === i) {
candidates.push(segments[i]);
} else {
candidates.push(segments.slice(i, end + 1).join('_'));
candidates.push(segments.slice(i, end + 1).join('-'));
}
for (const child of candidates) {
const candidate = current + '/' + child;
if (await isDir(candidate)) {
current = candidate;
i = end + 1;
matched = true;
break;
}
}
if (matched) break;
}
if (!matched) {
current = current + '/' + segments[i];
i++;
}
}
const finalExists = await fs
.access(current)
.then(() => true)
.catch(() => false);
return finalExists ? current : process.env.HOME || '/tmp';
}
/** Read the first 16KB of a file for content sniffing. */
async function readFileHead(path: string, buf: Buffer): Promise<string | null> {
try {
const fd = await fs.open(path, 'r');
const { bytesRead } = await fd.read(buf, 0, buf.length, 0);
await fd.close();
return buf.toString('utf8', 0, bytesRead);
} catch {
return null;
}
}
/** Read the last `buf.length` bytes of a file (for tail-scanning user prompts). */
async function readFileTail(path: string, buf: Buffer, fileSize: number): Promise<string | null> {
try {
const fd = await fs.open(path, 'r');
const offset = Math.max(0, fileSize - buf.length);
const { bytesRead } = await fd.read(buf, 0, buf.length, offset);
await fd.close();
const text = buf.toString('utf8', 0, bytesRead);
// Skip first partial line when we didn't read from the start
if (offset > 0) {
const nl = text.indexOf('\n');
return nl >= 0 ? text.slice(nl + 1) : null;
}
return text;
} catch {
return null;
}
}
type HistorySession = {
sessionId: string;
workingDir: string;
projectKey: string;
sizeBytes: number;
lastModified: string;
firstPrompt?: string;
};
// Scan a single project directory and return all valid history sessions in it.
// Reused by both the global overview and the single-folder drill-down.
async function scanProjectDir(projPath: string, projDir: string, headBuf: Buffer): Promise<HistorySession[]> {
const out: HistorySession[] = [];
const stat = await fs.stat(projPath).catch(() => null);
if (!stat?.isDirectory()) return out;
const workingDir = await decodeProjectKey(projDir);
const entries = await fs.readdir(projPath).catch(() => [] as string[]);
for (const entry of entries) {
if (!entry.endsWith('.jsonl')) continue;
const sessionId = entry.replace('.jsonl', '');
if (!/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/.test(sessionId)) continue;
const filePath = join(projPath, entry);
const fileStat = await fs.stat(filePath).catch(() => null);
if (!fileStat) continue;
if (fileStat.size < 4000) continue;
let firstPrompt: string | undefined;
const head = await readFileHead(filePath, headBuf);
const hasConversation = (text: string) =>
text.includes('"type":"user"') || text.includes('"type":"assistant"') || text.includes('"type":"summary"');
let foundContent = head ? hasConversation(head) : false;
let tail: string | null = null;
if (!foundContent && fileStat.size > 16384) {
const tailBuf = Buffer.alloc(32768);
tail = await readFileTail(filePath, tailBuf, fileStat.size);
if (tail) foundContent = hasConversation(tail);
}
if (!foundContent) continue;
if (head) firstPrompt = extractFirstUserPrompt(head);
if (!firstPrompt && fileStat.size > 65536) {
if (!tail) {
const tailBuf = Buffer.alloc(32768);
tail = await readFileTail(filePath, tailBuf, fileStat.size);
}
if (tail) firstPrompt = extractFirstUserPrompt(tail);
}
out.push({
sessionId,
workingDir,
projectKey: projDir,
sizeBytes: fileStat.size,
lastModified: fileStat.mtime.toISOString(),
firstPrompt,
});
}
return out;
}
app.get('/api/history/sessions', async (req) => {
const query = req.query as { projectKey?: string; offset?: string; limit?: string };
const projectsDir = join(process.env.HOME || '/tmp', '.claude', 'projects');
const headBuf = Buffer.alloc(16384);
// Single-folder drill-down: when projectKey is provided, scan only that
// directory, bypass the 50-cap, and honor offset/limit pagination.
if (query.projectKey) {
// Validate projectKey format to prevent path traversal
if (!/^[A-Za-z0-9_-]+$/.test(query.projectKey)) {
return { sessions: [], total: 0 };
}
const offset = Math.max(0, parseInt(query.offset || '0', 10) || 0);
const limit = Math.min(100, Math.max(1, parseInt(query.limit || '20', 10) || 20));
const projPath = join(projectsDir, query.projectKey);
const all = await scanProjectDir(projPath, query.projectKey, headBuf);
all.sort((a, b) => new Date(b.lastModified).getTime() - new Date(a.lastModified).getTime());
return { sessions: all.slice(offset, offset + limit), total: all.length };
}
// Global overview: scan all projects, return up to 50 most-recent sessions.
const results: HistorySession[] = [];
try {
const projectDirs = await fs.readdir(projectsDir);
for (const projDir of projectDirs) {
const projPath = join(projectsDir, projDir);
const list = await scanProjectDir(projPath, projDir, headBuf);
results.push(...list);
}
} catch {
// Projects dir may not exist
}
results.sort((a, b) => new Date(b.lastModified).getTime() - new Date(a.lastModified).getTime());
return { sessions: results.slice(0, 50) };
});
// ═══════════════════════════════════════════════════════════════
// Paste Image (clipboard / drag-drop upload)
// ═══════════════════════════════════════════════════════════════
const ALLOWED_IMAGE_EXTS = new Set(['.png', '.jpg', '.jpeg', '.gif', '.webp', '.bmp']);
// The 10MB size cap is enforced by @fastify/multipart (registered in server.ts).
app.post('/api/sessions/:id/paste-image', async (req, reply) => {
// CSRF defense: state-changing routes must come from same origin.
// Cookies are SameSite=lax, multipart/form-data is a "simple" CORS request
// (no preflight), so a cross-origin <form enctype="multipart/form-data">
// submit attaches the session cookie unimpeded. Reject unless Origin/Referer
// matches req.host. Non-browser clients (no Origin AND no Referer) must
// supply X-Codeman-CSRF — a header browsers cannot add cross-origin without
// a preflight, which our CORS config does not allow from other origins.
const reqHost = req.headers.host;
const origin = req.headers.origin;
const referer = req.headers.referer;
let csrfOk = false;
if (origin) {
try {
csrfOk = new URL(origin).host === reqHost;
} catch {
/* invalid Origin → not ok */
}
} else if (referer) {
try {
csrfOk = new URL(referer).host === reqHost;
} catch {
/* invalid Referer → not ok */
}
} else {
csrfOk = !!req.headers['x-codeman-csrf'];
}
if (!csrfOk) {
reply.code(403);
return createErrorResponse(ApiErrorCode.INVALID_INPUT, 'CSRF check failed');
}
const { id } = req.params as { id: string };
// Rate limit per (IP, sessionId): 30/min. Defends against disk-fill DoS
// — even an authenticated attacker can otherwise loop 10MB POSTs.
if (!consumePasteToken(`${req.ip}:${id}`)) {
reply.code(429);
reply.header('Retry-After', '60');
return createErrorResponse(ApiErrorCode.INVALID_INPUT, 'Rate limit exceeded (30 uploads/min per session)');
}
const session = findSessionOrFail(ctx, id);
if (!req.isMultipart()) {
reply.code(400);
return createErrorResponse(ApiErrorCode.INVALID_INPUT, 'Expected multipart/form-data');
}
// Read the single file part. @fastify/multipart enforces the 10MB size cap
// and the 1-file/4-field count limits (server.ts), replacing a hand-rolled
// boundary scanner with several bugs: literal boundary matches anywhere in
// body, LF-only clients silently corrupted the last byte (hard-coded \r\n
// offsets), no part-count cap.
let part: import('@fastify/multipart').MultipartFile | undefined;
try {
part = await req.file();
} catch (err: unknown) {
reply.code(413);
return createErrorResponse(ApiErrorCode.INVALID_INPUT, getErrorMessage(err) || 'Invalid multipart payload');
}
if (!part) {
reply.code(400);
return createErrorResponse(ApiErrorCode.INVALID_INPUT, 'No image uploaded');
}
if (part.fieldname !== 'image') {
reply.code(400);
return createErrorResponse(ApiErrorCode.INVALID_INPUT, `Unexpected field "${part.fieldname}", expected "image"`);
}
let imageBytes: Buffer;
try {
imageBytes = await part.toBuffer();
} catch (err: unknown) {
reply.code(413);
return createErrorResponse(ApiErrorCode.INVALID_INPUT, getErrorMessage(err) || 'File too large (max 10MB)');
}
if (imageBytes.length === 0) {
reply.code(400);
return createErrorResponse(ApiErrorCode.INVALID_INPUT, 'Empty file');
}
// Determine extension from filename or Content-Type.
let ext = '.png';
if (part.filename) {
const origExt = extname(part.filename).toLowerCase();
if (ALLOWED_IMAGE_EXTS.has(origExt)) ext = origExt;
}
const mimeMatch = (part.mimetype || '').toLowerCase().match(/^image\/(png|jpeg|jpg|webp|gif|bmp)$/);
if (mimeMatch) {
const map: Record<string, string> = {
png: '.png',
jpeg: '.jpg',
jpg: '.jpg',
webp: '.webp',
gif: '.gif',
bmp: '.bmp',
};
ext = map[mimeMatch[1]] ?? ext;
}
if (!ALLOWED_IMAGE_EXTS.has(ext)) {
reply.code(400);
return createErrorResponse(
ApiErrorCode.INVALID_INPUT,
`Unsupported image type: ${ext}. Allowed: ${[...ALLOWED_IMAGE_EXTS].join(', ')}`
);
}
// Sniff actual bytes — filename and Content-Type are both attacker-supplied.
// Polyglot HTML/PNG would otherwise pass and serve back with image/png MIME.
if (!imageMagicMatchesExt(imageBytes, ext)) {
// Diagnostic: on some Android galleries (e.g. MIUI) a WebP/HEIF is
// mislabeled as image/jpeg, so the declared ext passes the allowlist but
// the magic bytes do not. Log the real header so format mismatches can be
// pinned down without a reproduce-and-guess loop. The client now
// re-encodes images to JPEG/PNG before upload, so this should be rare.
console.warn(
`[paste-image] magic mismatch: filename=${JSON.stringify(part.filename)} mime=${JSON.stringify(part.mimetype)} declaredExt=${ext} magic=${imageBytes.subarray(0, 12).toString('hex')}`
);
reply.code(415);
return createErrorResponse(ApiErrorCode.INVALID_INPUT, `Image bytes do not match declared type ${ext}`);
}
// Save to {workingDir}/.claude-images/
// Refuse symlinks at imageDir — an agent or postinstall script could plant
// `.claude-images -> ~/.ssh/` and redirect future writes outside workingDir.
// We lstat (not stat) so we see the symlink itself. Use mkdir without
// `recursive` so the leaf creation does not follow a symlink either, and
// O_EXCL|O_NOFOLLOW on the file open so the write itself is symlink-safe.
const imageDir = join(session.workingDir, '.claude-images');
try {
const dirStat = await fs.lstat(imageDir);
if (dirStat.isSymbolicLink() || !dirStat.isDirectory()) {
reply.code(403);
return createErrorResponse(ApiErrorCode.INVALID_INPUT, '.claude-images is not a regular directory');
}
} catch (err: unknown) {
if ((err as NodeJS.ErrnoException).code !== 'ENOENT') throw err;
// Non-recursive mkdir: errors on EEXIST and does not follow symlinks for
// the leaf. session.workingDir is guaranteed to exist (live session).
await fs.mkdir(imageDir);
}
// Date.now() collides on same-ms uploads from two tabs (last-write wins
// silently). Append 8 hex chars so concurrent pastes get distinct names.
const filename = `paste-${Date.now()}-${randomBytes(4).toString('hex')}${ext}`;
const filepath = join(imageDir, filename);
// O_EXCL: refuse to overwrite (collision is impossible with random suffix,
// but defends against TOCTOU). O_NOFOLLOW: refuse if filepath is a symlink.
const fh = await fs.open(
filepath,
fs.constants.O_WRONLY | fs.constants.O_CREAT | fs.constants.O_EXCL | fs.constants.O_NOFOLLOW
);
try {
await fh.writeFile(imageBytes);
} finally {
await fh.close();
}
return { path: filepath, filename };
});
}