File size: 2,028 Bytes
d02c2a6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | /* eslint-disable */
import { NextRequest, NextResponse } from 'next/server';
import fs from 'fs';
import path from 'path';
import { getDatasetsRoot } from '@/server/settings';
function isUnderRoot(filepath: string, root: string): boolean {
const resolved = path.resolve(filepath);
return resolved === root || resolved.startsWith(root + path.sep);
}
export async function POST(request: NextRequest) {
let body;
try {
body = await request.json();
} catch {
// Client aborted the request before body was fully sent
return new NextResponse(null, { status: 499 });
}
if (request.signal.aborted) {
return new NextResponse(null, { status: 499 });
}
const { imgPath } = body;
console.log('Received POST request for caption:', imgPath);
try {
// Decode the path
const filepath = imgPath;
console.log('Decoded image path:', filepath);
// caption name is the filepath without extension but with .txt
const captionPath = filepath.replace(/\.[^/.]+$/, '') + '.txt';
// Get allowed directories
const allowedDir = await getDatasetsRoot();
// Security check: resolve so `..` segments collapse, then verify it's still
// under the allowed root. Substring `.includes('..')` would false-positive
// on filenames that contain `..` as text (e.g. an ellipsis in a filename).
const isAllowed = isUnderRoot(filepath, allowedDir);
if (!isAllowed) {
console.warn(`Access denied: ${filepath} not in ${allowedDir}`);
return new NextResponse('Access denied', { status: 403 });
}
// Check if file exists
if (!fs.existsSync(captionPath)) {
// send back blank string if caption file does not exist
return new NextResponse('');
}
// Read caption file
const caption = fs.readFileSync(captionPath, 'utf-8');
// Return caption
return new NextResponse(caption);
} catch (error) {
console.error('Error getting caption:', error);
return new NextResponse('Error getting caption', { status: 500 });
}
}
|