59 lines
1.8 KiB
TypeScript
59 lines
1.8 KiB
TypeScript
import * as fs from 'node:fs';
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import Koa from 'koa';
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import { serverLogger } from '../index.js';
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import { IImage, convertToPng, convertToJpeg } from '@/services/drive/image-processor.js';
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import { createTemp } from '@/misc/create-temp.js';
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import { downloadUrl } from '@/misc/download-url.js';
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import { detectType } from '@/misc/get-file-info.js';
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import { StatusError } from '@/misc/fetch.js';
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import { FILE_TYPE_BROWSERSAFE } from '@/const.js';
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export async function proxyMedia(ctx: Koa.Context) {
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const url = 'url' in ctx.query ? ctx.query.url : 'https://' + ctx.params.url;
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if (typeof url !== 'string') {
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ctx.status = 400;
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return;
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}
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// Create temp file
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const [path, cleanup] = await createTemp();
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try {
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await downloadUrl(url, path);
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const { mime, ext } = await detectType(path);
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let image: IImage;
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if ('static' in ctx.query && ['image/png', 'image/gif', 'image/apng', 'image/vnd.mozilla.apng', 'image/webp', 'image/svg+xml'].includes(mime)) {
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image = await convertToPng(path, 498, 280);
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} else if ('preview' in ctx.query && ['image/jpeg', 'image/png', 'image/gif', 'image/apng', 'image/vnd.mozilla.apng', 'image/svg+xml'].includes(mime)) {
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image = await convertToJpeg(path, 200, 200);
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} else if (['image/svg+xml'].includes(mime)) {
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image = await convertToPng(path, 2048, 2048);
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} else if (!mime.startsWith('image/') || !FILE_TYPE_BROWSERSAFE.includes(mime)) {
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throw new StatusError('Rejected type', 403, 'Rejected type');
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} else {
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image = {
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data: fs.readFileSync(path),
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ext,
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type: mime,
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};
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}
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ctx.set('Content-Type', image.type);
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ctx.set('Cache-Control', 'max-age=31536000, immutable');
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ctx.body = image.data;
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} catch (e) {
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serverLogger.error(`${e}`);
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if (e instanceof StatusError && e.isClientError) {
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ctx.status = e.statusCode;
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} else {
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ctx.status = 500;
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}
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} finally {
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cleanup();
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}
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}
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