Files
f0ckm/src/banner_handler.mjs
2026-07-16 07:51:16 +02:00

258 lines
9.9 KiB
JavaScript

import cfg from "./inc/config.mjs";
import path from "path";
import { promises as fs } from "fs";
import db from "./inc/sql.mjs";
import lib from "./inc/lib.mjs";
import { parseMultipart, collectBody } from "./inc/multipart.mjs";
import { execFile as _execFile } from "child_process";
import { promisify } from "util";
const execFile = promisify(_execFile);
// Helper for JSON response
const sendJson = (res, data, code = 200) => {
res.writeHead(code, { 'Content-Type': 'application/json' });
res.end(JSON.stringify(data));
};
// Generate UUID using the same method as video uploads
const genuuid = async () => {
const raw = (await db`select replace(gen_random_uuid()::text, '-', '') || replace(gen_random_uuid()::text, '-', '') as uuid`)[0].uuid;
return raw.substring(0, 48);
};
export const handleBannerUpload = async (req, res) => {
console.log('[BANNER HANDLER] Upload started');
// Manual Session Lookup
let user = [];
if (req.cookies && req.cookies.session) {
user = await db`
select "user".id, "user".login, "user".user, "user".admin, "user_sessions".id as sess_id, "user_sessions".csrf_token, "user_options".*
from "user_sessions"
left join "user" on "user".id = "user_sessions".user_id
left join "user_options" on "user_options".user_id = "user_sessions".user_id
where "user_sessions".session = ${lib.sha256(req.cookies.session)}
limit 1
`;
}
if (user.length === 0) {
console.log('[BANNER HANDLER] Unauthorized - No valid session found');
return sendJson(res, { success: false, msg: 'Unauthorized' }, 401);
}
req.session = user[0];
console.log('[BANNER HANDLER] Authorized:', req.session.user);
// CSRF validation
if (req.session.csrf_token) {
const csrfToken = req.headers['x-csrf-token'];
if (!csrfToken || csrfToken !== req.session.csrf_token) {
console.warn(`[CSRF] Blocked banner upload for user ${req.session.user}. Invalid token.`);
return sendJson(res, { success: false, msg: 'Invalid CSRF token' }, 403);
}
}
try {
const contentType = req.headers['content-type'] || '';
const boundaryMatch = contentType.match(/boundary=(.+)$/);
if (!boundaryMatch) {
console.log('[BANNER HANDLER] No boundary');
return sendJson(res, { success: false, msg: 'Invalid content type' }, 400);
}
console.log('[BANNER HANDLER] Collecting body...');
const body = await collectBody(req);
console.log('[BANNER HANDLER] Body collected, size:', body.length);
console.log('[BANNER HANDLER] Parsing multipart...');
const parts = parseMultipart(body, boundaryMatch[1]);
const file = parts.file;
console.log('[BANNER HANDLER] Parsed, file present:', !!file, 'keys:', Object.keys(parts));
if (!file || !file.data) {
return sendJson(res, { success: false, msg: 'No file provided' }, 400);
}
// Validate file size (5MB max)
const maxSize = 5 * 1024 * 1024;
if (file.data.length > maxSize) {
return sendJson(res, {
success: false,
msg: `File too large. Maximum size is 5MB, got ${(file.data.length / 1024 / 1024).toFixed(2)}MB`
}, 400);
}
// Allowed MIME types
const allowedMimes = [
'image/gif',
'image/jpeg',
'image/jpg',
'image/png',
'image/webp'
];
// Validate MIME type from content-type header
let mime = (file.contentType || '').toLowerCase().split(';')[0].trim();
console.log('[BANNER HANDLER] File MIME from header:', mime);
if (!allowedMimes.includes(mime)) {
return sendJson(res, {
success: false,
msg: `Invalid file type. Allowed: gif, jpg, jpeg, png, webp. Got: ${mime}`
}, 400);
}
// Save to tmp and verify with file magic
console.log('[BANNER HANDLER] Generating UUID...');
const uuid = await genuuid();
const tmpPath = path.join(cfg.paths.tmp, `banner_${uuid}_tmp`);
const finalFilename = `banner_${uuid}.webp`;
const finalPath = path.join(cfg.paths.a, finalFilename);
await fs.mkdir(cfg.paths.tmp, { recursive: true });
await fs.mkdir(cfg.paths.a, { recursive: true });
console.log('[BANNER HANDLER] Writing tmp file:', tmpPath);
await fs.writeFile(tmpPath, file.data);
// Verify MIME with file magic
console.log('[BANNER HANDLER] Checking MIME with file magic...');
const { stdout: actualMime } = await execFile('file', ['--mime-type', '-b', tmpPath]);
console.log('[BANNER HANDLER] Actual MIME:', actualMime.trim());
const allowedActualMimes = [
'image/gif',
'image/jpeg',
'image/png',
'image/webp'
];
if (!allowedActualMimes.includes(actualMime.trim())) {
await fs.unlink(tmpPath).catch(() => { });
return sendJson(res, {
success: false,
msg: `Invalid file type detected: ${actualMime.trim()}`
}, 400);
}
// Convert to webp using ImageMagick — landscape banner crop (1200x400)
// NOTE: [0] frame selector must be appended to the input path, not a separate arg
console.log('[BANNER HANDLER] Running magick...');
try {
await execFile('magick', [`${tmpPath}[0]`, '-resize', '3840x3840>', '-quality', '85', finalPath]);
} catch (err) {
console.error('[BANNER HANDLER] Magick error:', err.message, err.stderr);
await fs.unlink(tmpPath).catch(() => { });
return sendJson(res, { success: false, msg: 'Failed to process image: ' + err.message }, 500);
}
console.log('[BANNER HANDLER] Magick done, output:', finalPath);
// Get current banner_file to delete old one (after magick succeeds)
let currentBanner = null;
try {
currentBanner = (await db`
select banner_file from user_options where user_id = ${+req.session.id}
`)[0]?.banner_file;
} catch (dbErr) {
console.error('[BANNER HANDLER] Could not fetch current banner (column may not exist yet):', dbErr.message);
}
// Clean up tmp file
await fs.unlink(tmpPath).catch(() => { });
// Delete old banner file if exists
if (currentBanner) {
const oldPath = path.join(cfg.paths.a, currentBanner);
await fs.unlink(oldPath).catch(() => { });
}
// Update database
console.log('[BANNER HANDLER] Updating database...');
try {
await db`
update user_options
set banner_file = ${finalFilename},
banner_position = ${parts.banner_position || 'center'},
banner_size = ${parts.banner_size || 'cover'}
where user_id = ${+req.session.id}
`;
} catch (dbErr) {
console.error('[BANNER HANDLER] DB update failed:', dbErr.message);
await fs.unlink(finalPath).catch(() => {});
return sendJson(res, { success: false, msg: 'DB error — did you run the migration? ' + dbErr.message }, 500);
}
console.log('[BANNER HANDLER] Upload complete:', finalFilename);
return sendJson(res, {
success: true,
banner_file: finalFilename,
msg: 'Banner uploaded successfully'
}, 200);
} catch (err) {
if (err.code === 'BODY_TOO_LARGE') {
return sendJson(res, { success: false, msg: 'File too large (5 MB max for banners)' }, 413);
}
console.error('[BANNER HANDLER ERROR]', err.message, err.stack);
try {
return sendJson(res, { success: false, msg: err.message || 'Banner upload failed' }, 500);
} catch (_) {}
}
};
export const handleBannerDelete = async (req, res) => {
console.log('[BANNER HANDLER] Delete started');
// Manual Session Lookup
let user = [];
if (req.cookies && req.cookies.session) {
user = await db`
select "user".id, "user".login, "user".user, "user".admin, "user_sessions".id as sess_id, "user_sessions".csrf_token, "user_options".*
from "user_sessions"
left join "user" on "user".id = "user_sessions".user_id
left join "user_options" on "user_options".user_id = "user_sessions".user_id
where "user_sessions".session = ${lib.sha256(req.cookies.session)}
limit 1
`;
}
if (user.length === 0) {
return sendJson(res, { success: false, msg: 'Unauthorized' }, 401);
}
req.session = user[0];
// CSRF validation
if (req.session.csrf_token) {
const csrfToken = req.headers['x-csrf-token'];
if (!csrfToken || csrfToken !== req.session.csrf_token) {
console.warn(`[CSRF] Blocked banner delete for user ${req.session.user}. Invalid token.`);
return sendJson(res, { success: false, msg: 'Invalid CSRF token' }, 403);
}
}
try {
const currentBanner = (await db`
select banner_file from user_options where user_id = ${+req.session.id}
`)[0]?.banner_file;
if (currentBanner) {
const oldPath = path.join(cfg.paths.a, currentBanner);
await fs.unlink(oldPath).catch(() => { });
}
await db`
update user_options
set banner_file = null
where user_id = ${+req.session.id}
`;
console.log('[BANNER HANDLER] Delete complete');
return sendJson(res, { success: true, msg: 'Custom banner removed' }, 200);
} catch (err) {
console.error('[BANNER DELETE ERROR]', err);
return sendJson(res, { success: false, msg: 'Failed to remove banner' }, 500);
}
};