refactor(tmp): simplify trusted tmp dir state checks

This commit is contained in:
Peter Steinberger
2026-02-26 02:46:43 +01:00
parent acbb93be48
commit 1f004e6640

View File

@@ -3,6 +3,7 @@ import os from "node:os";
import path from "node:path";
export const POSIX_OPENCLAW_TMP_DIR = "/tmp/openclaw";
const TMP_DIR_ACCESS_MODE = fs.constants.W_OK | fs.constants.X_OK;
type ResolvePreferredOpenClawTmpDirOptions = {
accessSync?: (path: string, mode?: number) => void;
@@ -66,7 +67,7 @@ export function resolvePreferredOpenClawTmpDir(
return path.join(base, suffix);
};
const isTrustedPreferredDir = (st: {
const isTrustedTmpDir = (st: {
isDirectory(): boolean;
isSymbolicLink(): boolean;
mode?: number;
@@ -75,18 +76,13 @@ export function resolvePreferredOpenClawTmpDir(
return st.isDirectory() && !st.isSymbolicLink() && isSecureDirForUser(st);
};
const resolveDirState = (
candidatePath: string,
requireWritableAccess: boolean,
): "available" | "missing" | "invalid" => {
const resolveDirState = (candidatePath: string): "available" | "missing" | "invalid" => {
try {
const candidate = lstatSync(candidatePath);
if (!isTrustedPreferredDir(candidate)) {
if (!isTrustedTmpDir(candidate)) {
return "invalid";
}
if (requireWritableAccess) {
accessSync(candidatePath, fs.constants.W_OK | fs.constants.X_OK);
}
accessSync(candidatePath, TMP_DIR_ACCESS_MODE);
return "available";
} catch (err) {
if (isNodeErrorWithCode(err, "ENOENT")) {
@@ -98,7 +94,7 @@ export function resolvePreferredOpenClawTmpDir(
const ensureTrustedFallbackDir = (): string => {
const fallbackPath = fallback();
const state = resolveDirState(fallbackPath, true);
const state = resolveDirState(fallbackPath);
if (state === "available") {
return fallbackPath;
}
@@ -110,13 +106,13 @@ export function resolvePreferredOpenClawTmpDir(
} catch {
throw new Error(`Unable to create fallback OpenClaw temp dir: ${fallbackPath}`);
}
if (resolveDirState(fallbackPath, true) !== "available") {
if (resolveDirState(fallbackPath) !== "available") {
throw new Error(`Unsafe fallback OpenClaw temp dir: ${fallbackPath}`);
}
return fallbackPath;
};
const existingPreferredState = resolveDirState(POSIX_OPENCLAW_TMP_DIR, true);
const existingPreferredState = resolveDirState(POSIX_OPENCLAW_TMP_DIR);
if (existingPreferredState === "available") {
return POSIX_OPENCLAW_TMP_DIR;
}
@@ -125,10 +121,10 @@ export function resolvePreferredOpenClawTmpDir(
}
try {
accessSync("/tmp", fs.constants.W_OK | fs.constants.X_OK);
accessSync("/tmp", TMP_DIR_ACCESS_MODE);
// Create with a safe default; subsequent callers expect it exists.
mkdirSync(POSIX_OPENCLAW_TMP_DIR, { recursive: true, mode: 0o700 });
if (resolveDirState(POSIX_OPENCLAW_TMP_DIR, true) !== "available") {
if (resolveDirState(POSIX_OPENCLAW_TMP_DIR) !== "available") {
return ensureTrustedFallbackDir();
}
return POSIX_OPENCLAW_TMP_DIR;