Fallagassrini Bypass Shell

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Current Path : /opt/bitninja-threat-hunting/node_modules/winston/lib/winston/
Linux server.meentosys.com 3.10.0-1160.105.1.el7.x86_64 #1 SMP Thu Dec 7 15:39:45 UTC 2023 x86_64
Current File : //opt/bitninja-threat-hunting/node_modules/winston/lib/winston/exception-handler.js
/**
 * exception-handler.js: Object for handling uncaughtException events.
 *
 * (C) 2010 Charlie Robbins
 * MIT LICENCE
 */

'use strict';

const os = require('os');
const asyncForEach = require('async/forEach');
const debug = require('@dabh/diagnostics')('winston:exception');
const once = require('one-time');
const stackTrace = require('stack-trace');
const ExceptionStream = require('./exception-stream');

/**
 * Object for handling uncaughtException events.
 * @type {ExceptionHandler}
 */
module.exports = class ExceptionHandler {
  /**
   * TODO: add contructor description
   * @param {!Logger} logger - TODO: add param description
   */
  constructor(logger) {
    if (!logger) {
      throw new Error('Logger is required to handle exceptions');
    }

    this.logger = logger;
    this.handlers = new Map();
  }

  /**
   * Handles `uncaughtException` events for the current process by adding any
   * handlers passed in.
   * @returns {undefined}
   */
  handle(...args) {
    args.forEach(arg => {
      if (Array.isArray(arg)) {
        return arg.forEach(handler => this._addHandler(handler));
      }

      this._addHandler(arg);
    });

    if (!this.catcher) {
      this.catcher = this._uncaughtException.bind(this);
      process.on('uncaughtException', this.catcher);
    }
  }

  /**
   * Removes any handlers to `uncaughtException` events for the current
   * process. This does not modify the state of the `this.handlers` set.
   * @returns {undefined}
   */
  unhandle() {
    if (this.catcher) {
      process.removeListener('uncaughtException', this.catcher);
      this.catcher = false;

      Array.from(this.handlers.values())
        .forEach(wrapper => this.logger.unpipe(wrapper));
    }
  }

  /**
   * TODO: add method description
   * @param {Error} err - Error to get information about.
   * @returns {mixed} - TODO: add return description.
   */
  getAllInfo(err) {
    let { message } = err;
    if (!message && typeof err === 'string') {
      message = err;
    }

    return {
      error: err,
      // TODO (indexzero): how do we configure this?
      level: 'error',
      message: [
        `uncaughtException: ${(message || '(no error message)')}`,
        err.stack || '  No stack trace'
      ].join('\n'),
      stack: err.stack,
      exception: true,
      date: new Date().toString(),
      process: this.getProcessInfo(),
      os: this.getOsInfo(),
      trace: this.getTrace(err)
    };
  }

  /**
   * Gets all relevant process information for the currently running process.
   * @returns {mixed} - TODO: add return description.
   */
  getProcessInfo() {
    return {
      pid: process.pid,
      uid: process.getuid ? process.getuid() : null,
      gid: process.getgid ? process.getgid() : null,
      cwd: process.cwd(),
      execPath: process.execPath,
      version: process.version,
      argv: process.argv,
      memoryUsage: process.memoryUsage()
    };
  }

  /**
   * Gets all relevant OS information for the currently running process.
   * @returns {mixed} - TODO: add return description.
   */
  getOsInfo() {
    return {
      loadavg: os.loadavg(),
      uptime: os.uptime()
    };
  }

  /**
   * Gets a stack trace for the specified error.
   * @param {mixed} err - TODO: add param description.
   * @returns {mixed} - TODO: add return description.
   */
  getTrace(err) {
    const trace = err ? stackTrace.parse(err) : stackTrace.get();
    return trace.map(site => {
      return {
        column: site.getColumnNumber(),
        file: site.getFileName(),
        function: site.getFunctionName(),
        line: site.getLineNumber(),
        method: site.getMethodName(),
        native: site.isNative()
      };
    });
  }

  /**
   * Helper method to add a transport as an exception handler.
   * @param {Transport} handler - The transport to add as an exception handler.
   * @returns {void}
   */
  _addHandler(handler) {
    if (!this.handlers.has(handler)) {
      handler.handleExceptions = true;
      const wrapper = new ExceptionStream(handler);
      this.handlers.set(handler, wrapper);
      this.logger.pipe(wrapper);
    }
  }

  /**
   * Logs all relevant information around the `err` and exits the current
   * process.
   * @param {Error} err - Error to handle
   * @returns {mixed} - TODO: add return description.
   * @private
   */
  _uncaughtException(err) {
    const info = this.getAllInfo(err);
    const handlers = this._getExceptionHandlers();
    // Calculate if we should exit on this error
    let doExit = typeof this.logger.exitOnError === 'function'
      ? this.logger.exitOnError(err)
      : this.logger.exitOnError;
    let timeout;

    if (!handlers.length && doExit) {
      // eslint-disable-next-line no-console
      console.warn('winston: exitOnError cannot be true with no exception handlers.');
      // eslint-disable-next-line no-console
      console.warn('winston: not exiting process.');
      doExit = false;
    }

    function gracefulExit() {
      debug('doExit', doExit);
      debug('process._exiting', process._exiting);

      if (doExit && !process._exiting) {
        // Remark: Currently ignoring any exceptions from transports when
        // catching uncaught exceptions.
        if (timeout) {
          clearTimeout(timeout);
        }
        // eslint-disable-next-line no-process-exit
        process.exit(1);
      }
    }

    if (!handlers || handlers.length === 0) {
      return process.nextTick(gracefulExit);
    }

    // Log to all transports attempting to listen for when they are completed.
    asyncForEach(handlers, (handler, next) => {
      const done = once(next);
      const transport = handler.transport || handler;

      // Debug wrapping so that we can inspect what's going on under the covers.
      function onDone(event) {
        return () => {
          debug(event);
          done();
        };
      }

      transport._ending = true;
      transport.once('finish', onDone('finished'));
      transport.once('error', onDone('error'));
    }, () => doExit && gracefulExit());

    this.logger.log(info);

    // If exitOnError is true, then only allow the logging of exceptions to
    // take up to `3000ms`.
    if (doExit) {
      timeout = setTimeout(gracefulExit, 3000);
    }
  }

  /**
   * Returns the list of transports and exceptionHandlers for this instance.
   * @returns {Array} - List of transports and exceptionHandlers for this
   * instance.
   * @private
   */
  _getExceptionHandlers() {
    // Remark (indexzero): since `logger.transports` returns all of the pipes
    // from the _readableState of the stream we actually get the join of the
    // explicit handlers and the implicit transports with
    // `handleExceptions: true`
    return this.logger.transports.filter(wrap => {
      const transport = wrap.transport || wrap;
      return transport.handleExceptions;
    });
  }
};
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