next
Version:
The React Framework
112 lines (111 loc) • 6.11 kB
JavaScript
/* eslint-disable import/no-extraneous-dependencies */ import 'server-only';
/* eslint-disable import/no-extraneous-dependencies */ import { renderToReadableStream } from 'react-server-dom-webpack/server.edge';
/* eslint-disable import/no-extraneous-dependencies */ import { createFromReadableStream } from 'react-server-dom-webpack/client.edge';
import { streamToString } from '../stream-utils/node-web-streams-helper';
import { arrayBufferToString, decrypt, encrypt, getActionEncryptionKey, getClientReferenceManifestForRsc, getServerModuleMap, stringToUint8Array } from './encryption-utils';
import { getPrerenderResumeDataCache, getRenderResumeDataCache, workUnitAsyncStorage } from './work-unit-async-storage.external';
const isEdgeRuntime = process.env.NEXT_RUNTIME === 'edge';
const textEncoder = new TextEncoder();
const textDecoder = new TextDecoder();
async function decodeActionBoundArg(actionId, arg) {
const key = await getActionEncryptionKey();
if (typeof key === 'undefined') {
throw new Error(`Missing encryption key for Server Action. This is a bug in Next.js`);
}
// Get the iv (16 bytes) and the payload from the arg.
const originalPayload = atob(arg);
const ivValue = originalPayload.slice(0, 16);
const payload = originalPayload.slice(16);
const decrypted = textDecoder.decode(await decrypt(key, stringToUint8Array(ivValue), stringToUint8Array(payload)));
if (!decrypted.startsWith(actionId)) {
throw new Error('Invalid Server Action payload: failed to decrypt.');
}
return decrypted.slice(actionId.length);
}
/**
* Encrypt the serialized string with the action id as the salt. Add a prefix to
* later ensure that the payload is correctly decrypted, similar to a checksum.
*/ async function encodeActionBoundArg(actionId, arg) {
const key = await getActionEncryptionKey();
if (key === undefined) {
throw new Error(`Missing encryption key for Server Action. This is a bug in Next.js`);
}
// Get 16 random bytes as iv.
const randomBytes = new Uint8Array(16);
workUnitAsyncStorage.exit(()=>crypto.getRandomValues(randomBytes));
const ivValue = arrayBufferToString(randomBytes.buffer);
const encrypted = await encrypt(key, randomBytes, textEncoder.encode(actionId + arg));
return btoa(ivValue + arrayBufferToString(encrypted));
}
// Encrypts the action's bound args into a string.
export async function encryptActionBoundArgs(actionId, args) {
const { clientModules } = getClientReferenceManifestForRsc();
// Create an error before any asynchrounous calls, to capture the original
// call stack in case we need it when the serialization errors.
const error = new Error();
Error.captureStackTrace(error, encryptActionBoundArgs);
let didCatchError = false;
// Using Flight to serialize the args into a string.
const serialized = await streamToString(renderToReadableStream(args, clientModules, {
onError (err) {
// We're only reporting one error at a time, starting with the first.
if (didCatchError) {
return;
}
didCatchError = true;
// Use the original error message together with the previously created
// stack, because err.stack is a useless Flight Server call stack.
error.message = err instanceof Error ? err.message : String(err);
}
}));
if (didCatchError) {
if (process.env.NODE_ENV === 'development') {
// Logging the error is needed for server functions that are passed to the
// client where the decryption is not done during rendering. Console
// replaying allows us to still show the error dev overlay in this case.
console.error(error);
}
throw error;
}
const workUnitStore = workUnitAsyncStorage.getStore();
if (!workUnitStore) {
return encodeActionBoundArg(actionId, serialized);
}
const prerenderResumeDataCache = getPrerenderResumeDataCache(workUnitStore);
const renderResumeDataCache = getRenderResumeDataCache(workUnitStore);
const cacheKey = actionId + serialized;
const cachedEncrypted = (prerenderResumeDataCache == null ? void 0 : prerenderResumeDataCache.encryptedBoundArgs.get(cacheKey)) ?? (renderResumeDataCache == null ? void 0 : renderResumeDataCache.encryptedBoundArgs.get(cacheKey));
if (cachedEncrypted) {
return cachedEncrypted;
}
const cacheSignal = workUnitStore.type === 'prerender' ? workUnitStore.cacheSignal : undefined;
cacheSignal == null ? void 0 : cacheSignal.beginRead();
const encrypted = await encodeActionBoundArg(actionId, serialized);
cacheSignal == null ? void 0 : cacheSignal.endRead();
prerenderResumeDataCache == null ? void 0 : prerenderResumeDataCache.encryptedBoundArgs.set(cacheKey, encrypted);
return encrypted;
}
// Decrypts the action's bound args from the encrypted string.
export async function decryptActionBoundArgs(actionId, encrypted) {
const { edgeRscModuleMapping, rscModuleMapping } = getClientReferenceManifestForRsc();
// Decrypt the serialized string with the action id as the salt.
const decrypted = await decodeActionBoundArg(actionId, await encrypted);
// Using Flight to deserialize the args from the string.
const deserialized = await createFromReadableStream(new ReadableStream({
start (controller) {
controller.enqueue(textEncoder.encode(decrypted));
controller.close();
}
}), {
serverConsumerManifest: {
// moduleLoading must be null because we don't want to trigger preloads of ClientReferences
// to be added to the current execution. Instead, we'll wait for any ClientReference
// to be emitted which themselves will handle the preloading.
moduleLoading: null,
moduleMap: isEdgeRuntime ? edgeRscModuleMapping : rscModuleMapping,
serverModuleMap: getServerModuleMap()
}
});
return deserialized;
}
//# sourceMappingURL=encryption.js.map