/opt/canhelp/node_modules/next/dist/server/app-render
Edit: /opt/canhelp/node_modules/next/dist/server/app-render/encryption-utils-server.js (4823B)
// This file should never be bundled into application's runtime code and should
// stay in the Next.js server.
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "generateEncryptionKeyBase64", {
enumerable: true,
get: function() {
return generateEncryptionKeyBase64;
}
});
const _path = /*#__PURE__*/ _interop_require_default(require("path"));
const _fs = /*#__PURE__*/ _interop_require_default(require("fs"));
const _cachedir = require("../cache-dir");
const _encryptionutils = require("./encryption-utils");
function _interop_require_default(obj) {
return obj && obj.__esModule ? obj : {
default: obj
};
}
// Keep the key in memory as it should never change during the lifetime of the server in
// both development and production.
let __next_encryption_key_generation_promise = null;
const CONFIG_FILE = '.rscinfo';
const ENCRYPTION_KEY = 'encryption.key';
const ENCRYPTION_EXPIRE_AT = 'encryption.expire_at';
const EXPIRATION = 1000 * 60 * 60 * 24 * 14 // 14 days
;
async function writeCache(distDir, configValue) {
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({
[ENCRYPTION_KEY]: configValue,
[ENCRYPTION_EXPIRE_AT]: Date.now() + EXPIRATION
}));
}
// This utility is used to get a key for the cache directory. If the
// key is not present, it will generate a new one and store it in the
// cache directory inside dist.
// The key will also expire after a certain amount of time. Once it
// expires, a new one will be generated.
// During the lifetime of the server, it will be reused and never refreshed.
async function loadOrGenerateKey(distDir, isBuild, generateKey) {
const cacheBaseDir = (0, _cachedir.getStorageDirectory)(distDir);
if (!cacheBaseDir) {
// There's no persistent storage available. We generate a new key.
// This also covers development time.
return await generateKey();
}
const configPath = _path.default.join(cacheBaseDir, CONFIG_FILE);
async function hasCachedKey() {
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[ENCRYPTION_KEY] !== 'string' || typeof config[ENCRYPTION_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[ENCRYPTION_EXPIRE_AT] < Date.now()) {
return false;
}
const cachedKey = config[ENCRYPTION_KEY];
// If encryption key is provided via env, and it's not same as valid cache,
// we should not use the cached key and respect the env key.
if (cachedKey && process.env.NEXT_SERVER_ACTIONS_ENCRYPTION_KEY && cachedKey !== process.env.NEXT_SERVER_ACTIONS_ENCRYPTION_KEY) {
return false;
}
return cachedKey;
} catch {
// Broken config file. We should generate a new key and overwrite it.
return false;
}
}
const maybeValidKey = await hasCachedKey();
if (typeof maybeValidKey === 'string') {
return maybeValidKey;
}
const key = await generateKey();
await writeCache(distDir, key);
return key;
}
async function generateEncryptionKeyBase64({ isBuild, distDir }) {
// This avoids it being generated multiple times in parallel.
if (!__next_encryption_key_generation_promise) {
__next_encryption_key_generation_promise = loadOrGenerateKey(distDir, isBuild, async ()=>{
const providedKey = process.env.NEXT_SERVER_ACTIONS_ENCRYPTION_KEY;
if (providedKey) {
return providedKey;
}
const key = await crypto.subtle.generateKey({
name: 'AES-GCM',
length: 256
}, true, [
'encrypt',
'decrypt'
]);
const exported = await crypto.subtle.exportKey('raw', key);
return btoa((0, _encryptionutils.arrayBufferToString)(exported));
});
}
return __next_encryption_key_generation_promise;
}
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