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fix: harden loop-status snapshot writes

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Affaan Mustafa
2026-04-30 12:07:22 -04:00
committed by Affaan Mustafa
parent 2715315438
commit 61992f7f5e
2 changed files with 117 additions and 23 deletions
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23
scripts/loop-status.js
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@@ -614,12 +614,20 @@ function hashString(value) {
return crypto.createHash('sha256').update(String(value)).digest('hex');
}
function isWindowsReservedBasename(value) {
const basename = String(value).split('.')[0];
return /^(con|prn|aux|nul|com[1-9]|lpt[1-9])$/i.test(basename);
}
function sanitizeSnapshotName(value, fallback = 'session') {
const raw = String(value || '').trim() || fallback;
const sanitized = raw.replace(/[^a-zA-Z0-9._-]/g, '_').replace(/^_+|_+$/g, '');
if (sanitized && sanitized.length <= 96) {
if (sanitized && sanitized.length <= 96 && !isWindowsReservedBasename(sanitized)) {
return sanitized;
}
if (sanitized && isWindowsReservedBasename(sanitized)) {
return `${sanitized}-${hashString(raw).slice(0, 8)}`;
}
const prefix = sanitized ? sanitized.slice(0, 48).replace(/[._-]+$/g, '') : fallback;
return `${prefix || fallback}-${hashString(raw).slice(0, 12)}`;
@@ -629,7 +637,18 @@ function atomicWriteJson(filePath, payload) {
const data = JSON.stringify(payload, null, 2) + '\n';
const tempPath = `${filePath}.${process.pid}.${Date.now()}.${Math.random().toString(16).slice(2)}.tmp`;
fs.writeFileSync(tempPath, data, 'utf8');
fs.renameSync(tempPath, filePath);
try {
fs.renameSync(tempPath, filePath);
} catch (error) {
try {
fs.unlinkSync(tempPath);
} catch (cleanupError) {
if (cleanupError.code !== 'ENOENT') {
console.error(`[loop-status] WARNING: could not remove temporary snapshot file ${tempPath}: ${cleanupError.message}`);
}
}
throw error;
}
}
function getSnapshotPath(outputDir, session, usedNames) {