54 lines
1.5 KiB
JavaScript
54 lines
1.5 KiB
JavaScript
// src/middleware/body-limit/index.ts
|
|
import { HTTPException } from "../../http-exception.js";
|
|
var ERROR_MESSAGE = "Payload Too Large";
|
|
var bodyLimit = (options) => {
|
|
const onError = options.onError || (() => {
|
|
const res = new Response(ERROR_MESSAGE, {
|
|
status: 413
|
|
});
|
|
throw new HTTPException(413, { res });
|
|
});
|
|
const maxSize = options.maxSize;
|
|
return async function bodyLimit2(c, next) {
|
|
if (!c.req.raw.body) {
|
|
return next();
|
|
}
|
|
const hasTransferEncoding = c.req.raw.headers.has("transfer-encoding");
|
|
const hasContentLength = c.req.raw.headers.has("content-length");
|
|
if (hasContentLength && !hasTransferEncoding) {
|
|
const contentLength = parseInt(c.req.raw.headers.get("content-length") || "0", 10);
|
|
return contentLength > maxSize ? onError(c) : next();
|
|
}
|
|
let size = 0;
|
|
const chunks = [];
|
|
const rawReader = c.req.raw.body.getReader();
|
|
for (; ; ) {
|
|
const { done, value } = await rawReader.read();
|
|
if (done) {
|
|
break;
|
|
}
|
|
size += value.length;
|
|
if (size > maxSize) {
|
|
return onError(c);
|
|
}
|
|
chunks.push(value);
|
|
}
|
|
const requestInit = {
|
|
body: new ReadableStream({
|
|
start(controller) {
|
|
for (const chunk of chunks) {
|
|
controller.enqueue(chunk);
|
|
}
|
|
controller.close();
|
|
}
|
|
}),
|
|
duplex: "half"
|
|
};
|
|
c.req.raw = new Request(c.req.raw, requestInit);
|
|
return next();
|
|
};
|
|
};
|
|
export {
|
|
bodyLimit
|
|
};
|