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/**
* Crash logger
* Pokemon Showdown - http://pokemonshowdown.com/
*
* Logs crashes, sends an e-mail notification if you've set up
* config.js to do that.
*
* @license MIT
*/
import * as fs from 'fs';
import * as path from 'path';
const CRASH_EMAIL_THROTTLE = 5 * 60 * 1000; // 5 minutes
const logPath = path.resolve(
// not sure why this is necessary, but in Windows testing it was
__dirname, '../', __dirname.includes(`${path.sep}dist${path.sep}`) ? '..' : '',
path.join((global as any).Config?.logsdir || 'logs', 'errors.txt')
);
let lastCrashLog = 0;
let transport: any;
/**
* Logs when a crash happens to console, then e-mails those who are configured
* to receive them.
*/
export function crashlogger(
error: unknown,
description: string,
data: AnyObject | null = null,
emailConfig: AnyObject | null = null,
): string | null {
const datenow = Date.now();
let stack = (typeof error === 'string' ? error : (error as Error)?.stack) || '';
if (data) {
stack += `\n\nAdditional information:\n`;
for (const k in data) {
stack += ` ${k} = ${data[k]}\n`;
}
}
console.error(`\nCRASH: ${stack}\n`);
const out = fs.createWriteStream(logPath, { flags: 'a' });
out.on('open', () => {
out.write(`\n${stack}\n`);
out.end();
}).on('error', (err: Error) => {
console.error(`\nSUBCRASH: ${err.stack}\n`);
});
const emailOpts = emailConfig || (global as any).Config?.crashguardemail;
if (emailOpts && ((datenow - lastCrashLog) > CRASH_EMAIL_THROTTLE)) {
lastCrashLog = datenow;
if (!transport) {
try {
require.resolve('nodemailer');
} catch {
throw new Error(
'nodemailer is not installed, but it is required if Config.crashguardemail is configured! ' +
'Run npm install --no-save nodemailer and restart the server.'
);
}
}
let text = `${description} crashed `;
if (transport) {
text += `again with this stack trace:\n${stack}`;
} else {
try {
transport = require('nodemailer').createTransport(emailOpts.options);
} catch {
throw new Error("Failed to start nodemailer; are you sure you've configured Config.crashguardemail correctly?");
}
text += `with this stack trace:\n${stack}`;
}
transport.sendMail({
from: emailOpts.from,
to: emailOpts.to,
subject: emailOpts.subject,
text,
}, (err: Error | null) => {
if (err) console.error(`Error sending email: ${err}`);
});
}
return null;
}
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