next
Version:
The React Framework
67 lines (66 loc) • 2.15 kB
JavaScript
import { parse } from 'next/dist/compiled/content-type';
import isError from '../../../lib/is-error';
import { ApiError } from '../index';
/**
* Parse `JSON` and handles invalid `JSON` strings
* @param str `JSON` string
*/ function parseJson(str) {
if (str.length === 0) {
// special-case empty json body, as it's a common client-side mistake
return {};
}
try {
return JSON.parse(str);
} catch (e) {
throw Object.defineProperty(new ApiError(400, 'Invalid JSON'), "__NEXT_ERROR_CODE", {
value: "E394",
enumerable: false,
configurable: true
});
}
}
/**
* Parse incoming message like `json` or `urlencoded`
* @param req request object
*/ export async function parseBody(req, limit) {
let contentType;
try {
contentType = parse(req.headers['content-type'] || 'text/plain');
} catch {
contentType = parse('text/plain');
}
const { type, parameters } = contentType;
const encoding = parameters.charset || 'utf-8';
let buffer;
try {
const getRawBody = require('next/dist/compiled/raw-body');
buffer = await getRawBody(req, {
encoding,
limit
});
} catch (e) {
if (isError(e) && e.type === 'entity.too.large') {
throw Object.defineProperty(new ApiError(413, `Body exceeded ${limit} limit`), "__NEXT_ERROR_CODE", {
value: "E394",
enumerable: false,
configurable: true
});
} else {
throw Object.defineProperty(new ApiError(400, 'Invalid body'), "__NEXT_ERROR_CODE", {
value: "E394",
enumerable: false,
configurable: true
});
}
}
const body = buffer.toString();
if (type === 'application/json' || type === 'application/ld+json') {
return parseJson(body);
} else if (type === 'application/x-www-form-urlencoded') {
const qs = require('querystring');
return qs.decode(body);
} else {
return body;
}
}
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