next
Version:
The React Framework
91 lines (90 loc) • 3.71 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "generatePreviewKeys", {
enumerable: true,
get: function() {
return generatePreviewKeys;
}
});
const _path = /*#__PURE__*/ _interop_require_default(require("path"));
const _fs = /*#__PURE__*/ _interop_require_default(require("fs"));
const _crypto = /*#__PURE__*/ _interop_require_default(require("crypto"));
const _cachedir = require("../server/cache-dir");
function _interop_require_default(obj) {
return obj && obj.__esModule ? obj : {
default: obj
};
}
const CONFIG_FILE = '.previewinfo';
const PREVIEW_ID = 'previewModeId';
const PREVIEW_SIGNING_KEY = 'previewModeSigningKey';
const PREVIEW_ENCRYPTION_KEY = 'previewModeEncryptionKey';
const PREVIEW_EXPIRE_AT = 'expireAt';
const EXPIRATION = 1000 * 60 * 60 * 24 * 14 // 14 days
;
async function writeCache(distDir, config) {
const cacheBaseDir = (0, _cachedir.getStorageDirectory)(distDir);
if (!cacheBaseDir) return;
const configPath = _path.default.join(cacheBaseDir, CONFIG_FILE);
if (!_fs.default.existsSync(cacheBaseDir)) {
await _fs.default.promises.mkdir(cacheBaseDir, {
recursive: true
});
}
await _fs.default.promises.writeFile(configPath, JSON.stringify({
[PREVIEW_ID]: config.previewModeId,
[PREVIEW_SIGNING_KEY]: config.previewModeSigningKey,
[PREVIEW_ENCRYPTION_KEY]: config.previewModeEncryptionKey,
[PREVIEW_EXPIRE_AT]: Date.now() + EXPIRATION
}));
}
function generateConfig() {
return {
previewModeId: _crypto.default.randomBytes(16).toString('hex'),
previewModeSigningKey: _crypto.default.randomBytes(32).toString('hex'),
previewModeEncryptionKey: _crypto.default.randomBytes(32).toString('hex')
};
}
async function generatePreviewKeys({ distDir, isBuild }) {
const cacheBaseDir = (0, _cachedir.getStorageDirectory)(distDir);
if (!cacheBaseDir) {
// There's no persistent storage available. We generate a new config.
// This also covers development time.
return generateConfig();
}
const configPath = _path.default.join(cacheBaseDir, CONFIG_FILE);
async function tryReadCachedConfig() {
if (!_fs.default.existsSync(configPath)) return false;
try {
const config = JSON.parse(await _fs.default.promises.readFile(configPath, 'utf8'));
if (!config) return false;
if (typeof config[PREVIEW_ID] !== 'string' || typeof config[PREVIEW_ENCRYPTION_KEY] !== 'string' || typeof config[PREVIEW_SIGNING_KEY] !== 'string' || typeof config[PREVIEW_EXPIRE_AT] !== 'number') {
return false;
}
// For build time, we need to rotate the key if it's expired. Otherwise
// (next start) we have to keep the key as it is so the runtime key matches
// the build time key.
if (isBuild && config[PREVIEW_EXPIRE_AT] < Date.now()) {
return false;
}
return {
previewModeId: config[PREVIEW_ID],
previewModeSigningKey: config[PREVIEW_SIGNING_KEY],
previewModeEncryptionKey: config[PREVIEW_ENCRYPTION_KEY]
};
} catch (e) {
// Broken config file. We should generate a new key and overwrite it.
return false;
}
}
const maybeValidConfig = await tryReadCachedConfig();
if (maybeValidConfig !== false) {
return maybeValidConfig;
}
const config = generateConfig();
await writeCache(distDir, config);
return config;
}
//# sourceMappingURL=preview-key-utils.js.map