🐛 Update: Added support for the 'find' command in settings.local.json. Enhanced logging for various modules, including initialization and performance metrics. Improved SQLite database optimization and ensured better tracking of user interactions and system processes. 📚

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2025-06-14 16:26:43 +02:00
parent ee54bc273c
commit 89037861e3
2472 changed files with 691099 additions and 1 deletions

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network-visualization/node_modules/send/index.js generated vendored Normal file
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/*!
* send
* Copyright(c) 2012 TJ Holowaychuk
* Copyright(c) 2014-2022 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict'
/**
* Module dependencies.
* @private
*/
var createError = require('http-errors')
var debug = require('debug')('send')
var encodeUrl = require('encodeurl')
var escapeHtml = require('escape-html')
var etag = require('etag')
var fresh = require('fresh')
var fs = require('fs')
var mime = require('mime-types')
var ms = require('ms')
var onFinished = require('on-finished')
var parseRange = require('range-parser')
var path = require('path')
var statuses = require('statuses')
var Stream = require('stream')
var util = require('util')
/**
* Path function references.
* @private
*/
var extname = path.extname
var join = path.join
var normalize = path.normalize
var resolve = path.resolve
var sep = path.sep
/**
* Regular expression for identifying a bytes Range header.
* @private
*/
var BYTES_RANGE_REGEXP = /^ *bytes=/
/**
* Maximum value allowed for the max age.
* @private
*/
var MAX_MAXAGE = 60 * 60 * 24 * 365 * 1000 // 1 year
/**
* Regular expression to match a path with a directory up component.
* @private
*/
var UP_PATH_REGEXP = /(?:^|[\\/])\.\.(?:[\\/]|$)/
/**
* Module exports.
* @public
*/
module.exports = send
/**
* Return a `SendStream` for `req` and `path`.
*
* @param {object} req
* @param {string} path
* @param {object} [options]
* @return {SendStream}
* @public
*/
function send (req, path, options) {
return new SendStream(req, path, options)
}
/**
* Initialize a `SendStream` with the given `path`.
*
* @param {Request} req
* @param {String} path
* @param {object} [options]
* @private
*/
function SendStream (req, path, options) {
Stream.call(this)
var opts = options || {}
this.options = opts
this.path = path
this.req = req
this._acceptRanges = opts.acceptRanges !== undefined
? Boolean(opts.acceptRanges)
: true
this._cacheControl = opts.cacheControl !== undefined
? Boolean(opts.cacheControl)
: true
this._etag = opts.etag !== undefined
? Boolean(opts.etag)
: true
this._dotfiles = opts.dotfiles !== undefined
? opts.dotfiles
: 'ignore'
if (this._dotfiles !== 'ignore' && this._dotfiles !== 'allow' && this._dotfiles !== 'deny') {
throw new TypeError('dotfiles option must be "allow", "deny", or "ignore"')
}
this._extensions = opts.extensions !== undefined
? normalizeList(opts.extensions, 'extensions option')
: []
this._immutable = opts.immutable !== undefined
? Boolean(opts.immutable)
: false
this._index = opts.index !== undefined
? normalizeList(opts.index, 'index option')
: ['index.html']
this._lastModified = opts.lastModified !== undefined
? Boolean(opts.lastModified)
: true
this._maxage = opts.maxAge || opts.maxage
this._maxage = typeof this._maxage === 'string'
? ms(this._maxage)
: Number(this._maxage)
this._maxage = !isNaN(this._maxage)
? Math.min(Math.max(0, this._maxage), MAX_MAXAGE)
: 0
this._root = opts.root
? resolve(opts.root)
: null
}
/**
* Inherits from `Stream`.
*/
util.inherits(SendStream, Stream)
/**
* Emit error with `status`.
*
* @param {number} status
* @param {Error} [err]
* @private
*/
SendStream.prototype.error = function error (status, err) {
// emit if listeners instead of responding
if (hasListeners(this, 'error')) {
return this.emit('error', createHttpError(status, err))
}
var res = this.res
var msg = statuses.message[status] || String(status)
var doc = createHtmlDocument('Error', escapeHtml(msg))
// clear existing headers
clearHeaders(res)
// add error headers
if (err && err.headers) {
setHeaders(res, err.headers)
}
// send basic response
res.statusCode = status
res.setHeader('Content-Type', 'text/html; charset=UTF-8')
res.setHeader('Content-Length', Buffer.byteLength(doc))
res.setHeader('Content-Security-Policy', "default-src 'none'")
res.setHeader('X-Content-Type-Options', 'nosniff')
res.end(doc)
}
/**
* Check if the pathname ends with "/".
*
* @return {boolean}
* @private
*/
SendStream.prototype.hasTrailingSlash = function hasTrailingSlash () {
return this.path[this.path.length - 1] === '/'
}
/**
* Check if this is a conditional GET request.
*
* @return {Boolean}
* @api private
*/
SendStream.prototype.isConditionalGET = function isConditionalGET () {
return this.req.headers['if-match'] ||
this.req.headers['if-unmodified-since'] ||
this.req.headers['if-none-match'] ||
this.req.headers['if-modified-since']
}
/**
* Check if the request preconditions failed.
*
* @return {boolean}
* @private
*/
SendStream.prototype.isPreconditionFailure = function isPreconditionFailure () {
var req = this.req
var res = this.res
// if-match
var match = req.headers['if-match']
if (match) {
var etag = res.getHeader('ETag')
return !etag || (match !== '*' && parseTokenList(match).every(function (match) {
return match !== etag && match !== 'W/' + etag && 'W/' + match !== etag
}))
}
// if-unmodified-since
var unmodifiedSince = parseHttpDate(req.headers['if-unmodified-since'])
if (!isNaN(unmodifiedSince)) {
var lastModified = parseHttpDate(res.getHeader('Last-Modified'))
return isNaN(lastModified) || lastModified > unmodifiedSince
}
return false
}
/**
* Strip various content header fields for a change in entity.
*
* @private
*/
SendStream.prototype.removeContentHeaderFields = function removeContentHeaderFields () {
var res = this.res
res.removeHeader('Content-Encoding')
res.removeHeader('Content-Language')
res.removeHeader('Content-Length')
res.removeHeader('Content-Range')
res.removeHeader('Content-Type')
}
/**
* Respond with 304 not modified.
*
* @api private
*/
SendStream.prototype.notModified = function notModified () {
var res = this.res
debug('not modified')
this.removeContentHeaderFields()
res.statusCode = 304
res.end()
}
/**
* Raise error that headers already sent.
*
* @api private
*/
SendStream.prototype.headersAlreadySent = function headersAlreadySent () {
var err = new Error('Can\'t set headers after they are sent.')
debug('headers already sent')
this.error(500, err)
}
/**
* Check if the request is cacheable, aka
* responded with 2xx or 304 (see RFC 2616 section 14.2{5,6}).
*
* @return {Boolean}
* @api private
*/
SendStream.prototype.isCachable = function isCachable () {
var statusCode = this.res.statusCode
return (statusCode >= 200 && statusCode < 300) ||
statusCode === 304
}
/**
* Handle stat() error.
*
* @param {Error} error
* @private
*/
SendStream.prototype.onStatError = function onStatError (error) {
switch (error.code) {
case 'ENAMETOOLONG':
case 'ENOENT':
case 'ENOTDIR':
this.error(404, error)
break
default:
this.error(500, error)
break
}
}
/**
* Check if the cache is fresh.
*
* @return {Boolean}
* @api private
*/
SendStream.prototype.isFresh = function isFresh () {
return fresh(this.req.headers, {
etag: this.res.getHeader('ETag'),
'last-modified': this.res.getHeader('Last-Modified')
})
}
/**
* Check if the range is fresh.
*
* @return {Boolean}
* @api private
*/
SendStream.prototype.isRangeFresh = function isRangeFresh () {
var ifRange = this.req.headers['if-range']
if (!ifRange) {
return true
}
// if-range as etag
if (ifRange.indexOf('"') !== -1) {
var etag = this.res.getHeader('ETag')
return Boolean(etag && ifRange.indexOf(etag) !== -1)
}
// if-range as modified date
var lastModified = this.res.getHeader('Last-Modified')
return parseHttpDate(lastModified) <= parseHttpDate(ifRange)
}
/**
* Redirect to path.
*
* @param {string} path
* @private
*/
SendStream.prototype.redirect = function redirect (path) {
var res = this.res
if (hasListeners(this, 'directory')) {
this.emit('directory', res, path)
return
}
if (this.hasTrailingSlash()) {
this.error(403)
return
}
var loc = encodeUrl(collapseLeadingSlashes(this.path + '/'))
var doc = createHtmlDocument('Redirecting', 'Redirecting to ' + escapeHtml(loc))
// redirect
res.statusCode = 301
res.setHeader('Content-Type', 'text/html; charset=UTF-8')
res.setHeader('Content-Length', Buffer.byteLength(doc))
res.setHeader('Content-Security-Policy', "default-src 'none'")
res.setHeader('X-Content-Type-Options', 'nosniff')
res.setHeader('Location', loc)
res.end(doc)
}
/**
* Pipe to `res.
*
* @param {Stream} res
* @return {Stream} res
* @api public
*/
SendStream.prototype.pipe = function pipe (res) {
// root path
var root = this._root
// references
this.res = res
// decode the path
var path = decode(this.path)
if (path === -1) {
this.error(400)
return res
}
// null byte(s)
if (~path.indexOf('\0')) {
this.error(400)
return res
}
var parts
if (root !== null) {
// normalize
if (path) {
path = normalize('.' + sep + path)
}
// malicious path
if (UP_PATH_REGEXP.test(path)) {
debug('malicious path "%s"', path)
this.error(403)
return res
}
// explode path parts
parts = path.split(sep)
// join / normalize from optional root dir
path = normalize(join(root, path))
} else {
// ".." is malicious without "root"
if (UP_PATH_REGEXP.test(path)) {
debug('malicious path "%s"', path)
this.error(403)
return res
}
// explode path parts
parts = normalize(path).split(sep)
// resolve the path
path = resolve(path)
}
// dotfile handling
if (containsDotFile(parts)) {
debug('%s dotfile "%s"', this._dotfiles, path)
switch (this._dotfiles) {
case 'allow':
break
case 'deny':
this.error(403)
return res
case 'ignore':
default:
this.error(404)
return res
}
}
// index file support
if (this._index.length && this.hasTrailingSlash()) {
this.sendIndex(path)
return res
}
this.sendFile(path)
return res
}
/**
* Transfer `path`.
*
* @param {String} path
* @api public
*/
SendStream.prototype.send = function send (path, stat) {
var len = stat.size
var options = this.options
var opts = {}
var res = this.res
var req = this.req
var ranges = req.headers.range
var offset = options.start || 0
if (res.headersSent) {
// impossible to send now
this.headersAlreadySent()
return
}
debug('pipe "%s"', path)
// set header fields
this.setHeader(path, stat)
// set content-type
this.type(path)
// conditional GET support
if (this.isConditionalGET()) {
if (this.isPreconditionFailure()) {
this.error(412)
return
}
if (this.isCachable() && this.isFresh()) {
this.notModified()
return
}
}
// adjust len to start/end options
len = Math.max(0, len - offset)
if (options.end !== undefined) {
var bytes = options.end - offset + 1
if (len > bytes) len = bytes
}
// Range support
if (this._acceptRanges && BYTES_RANGE_REGEXP.test(ranges)) {
// parse
ranges = parseRange(len, ranges, {
combine: true
})
// If-Range support
if (!this.isRangeFresh()) {
debug('range stale')
ranges = -2
}
// unsatisfiable
if (ranges === -1) {
debug('range unsatisfiable')
// Content-Range
res.setHeader('Content-Range', contentRange('bytes', len))
// 416 Requested Range Not Satisfiable
return this.error(416, {
headers: { 'Content-Range': res.getHeader('Content-Range') }
})
}
// valid (syntactically invalid/multiple ranges are treated as a regular response)
if (ranges !== -2 && ranges.length === 1) {
debug('range %j', ranges)
// Content-Range
res.statusCode = 206
res.setHeader('Content-Range', contentRange('bytes', len, ranges[0]))
// adjust for requested range
offset += ranges[0].start
len = ranges[0].end - ranges[0].start + 1
}
}
// clone options
for (var prop in options) {
opts[prop] = options[prop]
}
// set read options
opts.start = offset
opts.end = Math.max(offset, offset + len - 1)
// content-length
res.setHeader('Content-Length', len)
// HEAD support
if (req.method === 'HEAD') {
res.end()
return
}
this.stream(path, opts)
}
/**
* Transfer file for `path`.
*
* @param {String} path
* @api private
*/
SendStream.prototype.sendFile = function sendFile (path) {
var i = 0
var self = this
debug('stat "%s"', path)
fs.stat(path, function onstat (err, stat) {
var pathEndsWithSep = path[path.length - 1] === sep
if (err && err.code === 'ENOENT' && !extname(path) && !pathEndsWithSep) {
// not found, check extensions
return next(err)
}
if (err) return self.onStatError(err)
if (stat.isDirectory()) return self.redirect(path)
if (pathEndsWithSep) return self.error(404)
self.emit('file', path, stat)
self.send(path, stat)
})
function next (err) {
if (self._extensions.length <= i) {
return err
? self.onStatError(err)
: self.error(404)
}
var p = path + '.' + self._extensions[i++]
debug('stat "%s"', p)
fs.stat(p, function (err, stat) {
if (err) return next(err)
if (stat.isDirectory()) return next()
self.emit('file', p, stat)
self.send(p, stat)
})
}
}
/**
* Transfer index for `path`.
*
* @param {String} path
* @api private
*/
SendStream.prototype.sendIndex = function sendIndex (path) {
var i = -1
var self = this
function next (err) {
if (++i >= self._index.length) {
if (err) return self.onStatError(err)
return self.error(404)
}
var p = join(path, self._index[i])
debug('stat "%s"', p)
fs.stat(p, function (err, stat) {
if (err) return next(err)
if (stat.isDirectory()) return next()
self.emit('file', p, stat)
self.send(p, stat)
})
}
next()
}
/**
* Stream `path` to the response.
*
* @param {String} path
* @param {Object} options
* @api private
*/
SendStream.prototype.stream = function stream (path, options) {
var self = this
var res = this.res
// pipe
var stream = fs.createReadStream(path, options)
this.emit('stream', stream)
stream.pipe(res)
// cleanup
function cleanup () {
stream.destroy()
}
// response finished, cleanup
onFinished(res, cleanup)
// error handling
stream.on('error', function onerror (err) {
// clean up stream early
cleanup()
// error
self.onStatError(err)
})
// end
stream.on('end', function onend () {
self.emit('end')
})
}
/**
* Set content-type based on `path`
* if it hasn't been explicitly set.
*
* @param {String} path
* @api private
*/
SendStream.prototype.type = function type (path) {
var res = this.res
if (res.getHeader('Content-Type')) return
var ext = extname(path)
var type = mime.contentType(ext) || 'application/octet-stream'
debug('content-type %s', type)
res.setHeader('Content-Type', type)
}
/**
* Set response header fields, most
* fields may be pre-defined.
*
* @param {String} path
* @param {Object} stat
* @api private
*/
SendStream.prototype.setHeader = function setHeader (path, stat) {
var res = this.res
this.emit('headers', res, path, stat)
if (this._acceptRanges && !res.getHeader('Accept-Ranges')) {
debug('accept ranges')
res.setHeader('Accept-Ranges', 'bytes')
}
if (this._cacheControl && !res.getHeader('Cache-Control')) {
var cacheControl = 'public, max-age=' + Math.floor(this._maxage / 1000)
if (this._immutable) {
cacheControl += ', immutable'
}
debug('cache-control %s', cacheControl)
res.setHeader('Cache-Control', cacheControl)
}
if (this._lastModified && !res.getHeader('Last-Modified')) {
var modified = stat.mtime.toUTCString()
debug('modified %s', modified)
res.setHeader('Last-Modified', modified)
}
if (this._etag && !res.getHeader('ETag')) {
var val = etag(stat)
debug('etag %s', val)
res.setHeader('ETag', val)
}
}
/**
* Clear all headers from a response.
*
* @param {object} res
* @private
*/
function clearHeaders (res) {
for (const header of res.getHeaderNames()) {
res.removeHeader(header)
}
}
/**
* Collapse all leading slashes into a single slash
*
* @param {string} str
* @private
*/
function collapseLeadingSlashes (str) {
for (var i = 0; i < str.length; i++) {
if (str[i] !== '/') {
break
}
}
return i > 1
? '/' + str.substr(i)
: str
}
/**
* Determine if path parts contain a dotfile.
*
* @api private
*/
function containsDotFile (parts) {
for (var i = 0; i < parts.length; i++) {
var part = parts[i]
if (part.length > 1 && part[0] === '.') {
return true
}
}
return false
}
/**
* Create a Content-Range header.
*
* @param {string} type
* @param {number} size
* @param {array} [range]
*/
function contentRange (type, size, range) {
return type + ' ' + (range ? range.start + '-' + range.end : '*') + '/' + size
}
/**
* Create a minimal HTML document.
*
* @param {string} title
* @param {string} body
* @private
*/
function createHtmlDocument (title, body) {
return '<!DOCTYPE html>\n' +
'<html lang="en">\n' +
'<head>\n' +
'<meta charset="utf-8">\n' +
'<title>' + title + '</title>\n' +
'</head>\n' +
'<body>\n' +
'<pre>' + body + '</pre>\n' +
'</body>\n' +
'</html>\n'
}
/**
* Create a HttpError object from simple arguments.
*
* @param {number} status
* @param {Error|object} err
* @private
*/
function createHttpError (status, err) {
if (!err) {
return createError(status)
}
return err instanceof Error
? createError(status, err, { expose: false })
: createError(status, err)
}
/**
* decodeURIComponent.
*
* Allows V8 to only deoptimize this fn instead of all
* of send().
*
* @param {String} path
* @api private
*/
function decode (path) {
try {
return decodeURIComponent(path)
} catch (err) {
return -1
}
}
/**
* Determine if emitter has listeners of a given type.
*
* The way to do this check is done three different ways in Node.js >= 0.10
* so this consolidates them into a minimal set using instance methods.
*
* @param {EventEmitter} emitter
* @param {string} type
* @returns {boolean}
* @private
*/
function hasListeners (emitter, type) {
var count = typeof emitter.listenerCount !== 'function'
? emitter.listeners(type).length
: emitter.listenerCount(type)
return count > 0
}
/**
* Normalize the index option into an array.
*
* @param {boolean|string|array} val
* @param {string} name
* @private
*/
function normalizeList (val, name) {
var list = [].concat(val || [])
for (var i = 0; i < list.length; i++) {
if (typeof list[i] !== 'string') {
throw new TypeError(name + ' must be array of strings or false')
}
}
return list
}
/**
* Parse an HTTP Date into a number.
*
* @param {string} date
* @private
*/
function parseHttpDate (date) {
var timestamp = date && Date.parse(date)
return typeof timestamp === 'number'
? timestamp
: NaN
}
/**
* Parse a HTTP token list.
*
* @param {string} str
* @private
*/
function parseTokenList (str) {
var end = 0
var list = []
var start = 0
// gather tokens
for (var i = 0, len = str.length; i < len; i++) {
switch (str.charCodeAt(i)) {
case 0x20: /* */
if (start === end) {
start = end = i + 1
}
break
case 0x2c: /* , */
if (start !== end) {
list.push(str.substring(start, end))
}
start = end = i + 1
break
default:
end = i + 1
break
}
}
// final token
if (start !== end) {
list.push(str.substring(start, end))
}
return list
}
/**
* Set an object of headers on a response.
*
* @param {object} res
* @param {object} headers
* @private
*/
function setHeaders (res, headers) {
var keys = Object.keys(headers)
for (var i = 0; i < keys.length; i++) {
var key = keys[i]
res.setHeader(key, headers[key])
}
}