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const express = require('express');
const path = require('path');
const fs = require('fs');
const sanitize = require('sanitize-filename');
const writeFileAtomicSync = require('write-file-atomic').sync;
const { jsonParser, urlencodedParser } = require('../express-common');
const { AVATAR_WIDTH, AVATAR_HEIGHT } = require('../constants');
const { getImages, tryParse } = require('../util');
// image processing related library imports
const jimp = require('jimp');
const router = express.Router();
router.post('/get', jsonParser, function (request, response) {
var images = getImages(request.user.directories.avatars);
response.send(JSON.stringify(images));
});
router.post('/delete', jsonParser, function (request, response) {
if (!request.body) return response.sendStatus(400);
if (request.body.avatar !== sanitize(request.body.avatar)) {
console.error('Malicious avatar name prevented');
return response.sendStatus(403);
}
const fileName = path.join(request.user.directories.avatars, sanitize(request.body.avatar));
if (fs.existsSync(fileName)) {
fs.rmSync(fileName);
return response.send({ result: 'ok' });
}
return response.sendStatus(404);
});
router.post('/upload', urlencodedParser, async (request, response) => {
if (!request.file) return response.sendStatus(400);
try {
const pathToUpload = path.join(request.file.destination, request.file.filename);
const crop = tryParse(request.query.crop);
let rawImg = await jimp.read(pathToUpload);
if (typeof crop == 'object' && [crop.x, crop.y, crop.width, crop.height].every(x => typeof x === 'number')) {
rawImg = rawImg.crop(crop.x, crop.y, crop.width, crop.height);
}
const image = await rawImg.cover(AVATAR_WIDTH, AVATAR_HEIGHT).getBufferAsync(jimp.MIME_PNG);
const filename = request.body.overwrite_name || `${Date.now()}.png`;
const pathToNewFile = path.join(request.user.directories.avatars, filename);
writeFileAtomicSync(pathToNewFile, image);
fs.rmSync(pathToUpload);
return response.send({ path: filename });
} catch (err) {
return response.status(400).send('Is not a valid image');
}
});
module.exports = { router };
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