59 lines
2.2 KiB
TypeScript
59 lines
2.2 KiB
TypeScript
/*
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Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
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Copyright (C) 2023 Spacebar and Spacebar Contributors
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import bodyParser, { OptionsJson } from "body-parser";
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import { NextFunction, Request, Response } from "express";
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import { HTTPError } from "lambert-server";
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const errorMessages: { [key: string]: [string, number] } = {
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"entity.too.large": ["Request body too large", 413],
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"entity.parse.failed": ["Invalid JSON body", 400],
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"entity.verify.failed": ["Entity verification failed", 403],
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"request.aborted": ["Request aborted", 400],
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"request.size.invalid": ["Request size did not match content length", 400],
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"stream.encoding.set": ["Stream encoding should not be set", 500],
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"stream.not.readable": ["Stream is not readable", 500],
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"parameters.too.many": ["Too many parameters", 413],
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"charset.unsupported": ["Unsupported charset", 415],
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"encoding.unsupported": ["Unsupported content encoding", 415],
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};
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export function BodyParser(opts?: OptionsJson) {
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const jsonParser = bodyParser.json(opts);
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return (req: Request, res: Response, next: NextFunction) => {
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if (!req.headers["content-type"])
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req.headers["content-type"] = "application/json";
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jsonParser(req, res, (err) => {
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if (err) {
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const [message, status] = errorMessages[err.type] || [
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"Invalid Body",
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400,
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];
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const errorMessage =
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message.includes("charset") || message.includes("encoding")
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? `${message} "${err.charset || err.encoding}"`
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: message;
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return next(new HTTPError(errorMessage, status));
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}
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next();
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});
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};
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}
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